Tag Archives: screw drive

China high quality Standard Direct Drive Screw/Permanent Magnet Variable Speed/Pm VSD Screw Air Compressor with Best Sales

Product Description

Product Description

Vico hot sale industrial air paint  belt driven compressors machine VSC-20A
 

1.Enlarged steel thickness and square large-volume box, with less internal pressure loss and good appearance.
2.The cylinder is made of wear-resistant cast iron material, increased wall thickness, multi-blade design, high wear resistance, small temperature deformation, and better colling effect.
3.Using ductile iron crankshaft, high fatigue strength. Good vibration absorption, the crank pin is treated by high frequency quenching, which has good wear resistance and minimal vibration.
4.The connecting rod is made of high-quality alloy with high strength and good stability. It has extremely high folding stability, light weight, and small inertial force.
5.The piston is made of high-strength cast aluminum alloy with sufficient strength and hardness.
6.The enlarged protruding oil mirror makes it easier to observe the oil level.
7.Intelligent overload phase loss protector to avoid damage to the motor when voltage and wire phase missing problem.
8.Closed protective cover to improve safety protection.
*(1Mpa=10bar)

Detailed Photos

Series:

VSC-20A

Power:

15KW 20HP

Pressure:

0.7-1.25Mpa

Capacity:

1.7-2.4 m3/min

Voltage:

3PH, 220V/380V/450V,50Hz/60Hz

Dimensions:

1050*700*1000

Weight:

300kgs

Warranty:

5 years for whole set (except air filter oil filter oil separator,
3 years for air end)

 

Series: 

 

 

7.5KW 10HP

Pressure:

1.25Mpa

Speed:

760rpms

Cylinder:

Φ105*2+Φ55*2

Capacity:

1.05 m3/min

Tank:

300L

Voltage:

3PH/380V/50Hz

Dimensions:

1600*580*1200mm(L*W*H)

Weight:

300kgs

Packaging & Shipping

Standard Export package

Company Profile

We are manufacturer and wholesaler of Automotive Equipment, experience over 10+ years. Including Autobody frame machine, Painting booth, Car lifts, wheel alignment, tyre changer, balancer. Jacks, AC machine, Baking lamp, Welding spotter… We sell standard products to final users, and we offer shop design solutions for auto body shop starter/owner and OEM for world whole seller and distributors.

Our Advantages

Our sales team can offer 24H x 7D online consultation service We make sure order products qualified, test before delivery, well packaged with professional shipping. Most of our products with 3 years warranty and whole life after sale service.We offer competitive price with quantity order. We take care every inquiry and treat it with patience, we aim to be best buy of automotive equipment supplier!

FAQ

 

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After-sales Service: 1 Years
Warranty: 1 Years
Flow: Contra-Flow
Samples:
US$ 1598/Piece
1 Piece(Min.Order)

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Order Sample

Customization:
Available

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Shipping Cost:

Estimated freight per unit.







about shipping cost and estimated delivery time.
Payment Method:







 

Initial Payment



Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

air compressor

What Is the Role of Oil in Lubricated Screw Compressors?

In lubricated screw compressors, oil plays a crucial role in ensuring optimal performance, reliability, and longevity of the compressor. Here’s a detailed explanation of the role of oil in lubricated screw compressors:

Lubrication: One of the primary functions of oil in screw compressors is to provide lubrication to the moving parts, particularly the screw rotors. The oil forms a thin film between the rotors and the compressor housing, reducing friction and wear. This lubrication minimizes mechanical losses and helps maintain efficient operation by reducing energy consumption.

Sealing: Oil also acts as a sealing medium in lubricated screw compressors. The oil film created between the rotors and the compressor housing helps create a seal, preventing air or gas leakage between the high-pressure and low-pressure sides of the compressor. This sealing action is crucial for maintaining the compressors’ efficiency and preventing losses in compression performance.

Cooling: Oil plays a vital role in cooling various components of the screw compressor. As the compressed air or gas is compressed, it generates heat. The oil absorbs a significant amount of this heat and carries it away from the compression chamber. The oil then circulates through the compressor’s oil cooling system, where it dissipates the heat to the surrounding environment or through an oil cooler. Efficient oil cooling helps prevent overheating of the compressor components, ensuring reliable operation and extending the compressor’s lifespan.

Cleaning: The oil in lubricated screw compressors acts as a cleaning agent. It carries away contaminants, such as dirt, dust, and metal particles, that may enter the compressor during operation. The oil passes through filters and separators, removing these impurities and preventing them from accumulating in the compressor’s internal components. Clean oil helps maintain the integrity of the compressor’s internal parts and reduces the risk of damage or malfunctions.

Sealing Element Lubrication: In some lubricated screw compressors, the oil also serves to lubricate the sealing elements, such as the shaft seals or labyrinth seals. Proper lubrication of these seals helps maintain their effectiveness in preventing oil leakage and maintaining the separation between the oil and the compressed air or gas.

Corrosion Protection: Oil in screw compressors often contains additives that provide corrosion protection to the internal components. These additives form a protective layer on the metal surfaces, preventing corrosion caused by moisture or contaminants present in the compressed air or gas. Corrosion prevention helps maintain the compressor’s performance, efficiency, and reliability over time.

It’s important to note that lubricated screw compressors require regular oil monitoring, oil analysis, and oil changes to ensure optimal performance. The oil level, quality, and viscosity should be regularly checked and maintained within the manufacturer’s recommended specifications.

In summary, oil in lubricated screw compressors serves crucial functions such as lubrication, sealing, cooling, cleaning, sealing element lubrication, and corrosion protection. These functions collectively contribute to the efficient and reliable operation of the compressor, extending its service life and minimizing maintenance requirements.

air compressor

Can Screw Compressors Be Used for Refrigeration?

Yes, screw compressors can be used for refrigeration applications. Here’s a detailed explanation:

Screw compressors are versatile and widely used in various industrial applications, including refrigeration. They are known for their efficiency, reliability, and ability to handle high-capacity refrigeration systems. Screw compressors work by compressing refrigerant gas, increasing its pressure and temperature, and then transferring the heat to the surrounding environment.

Here are some key points regarding the use of screw compressors in refrigeration:

1. Industrial Refrigeration Systems:

Screw compressors are commonly employed in large-scale industrial refrigeration systems, such as those used in cold storage facilities, food processing plants, beverage production, and HVAC systems for commercial buildings. These systems require high cooling capacities and continuous operation, making screw compressors an ideal choice.

2. Positive Displacement Compressors:

Screw compressors belong to the category of positive displacement compressors. They use two interlocking helical rotors (screws) to trap and compress the refrigerant gas. This design ensures a continuous flow of refrigerant and allows for efficient compression over a wide range of operating conditions.

3. Oil-Injected and Oil-Free Types:

Screw compressors can be either oil-injected or oil-free. Oil-injected screw compressors use oil for lubrication and cooling, which helps reduce friction and extend the compressor’s lifespan. In contrast, oil-free screw compressors use specialized coatings and materials to eliminate the need for oil, making them suitable for applications where oil contamination is a concern, such as in the pharmaceutical or food industries.

4. Multi-Stage Compression:

In refrigeration applications, screw compressors are often used in multi-stage configurations to achieve higher pressure ratios and improve overall system efficiency. Multi-stage compression involves compressing the refrigerant gas in multiple stages, typically with intermediate cooling between each stage, to reduce the work required for compression and enhance system performance.

5. Variable Speed Control:

Screw compressors can be equipped with variable speed drives (VSD) that allow for precise control of the compressor’s rotational speed. VSD technology enables the compressor to adjust its capacity according to the refrigeration load, resulting in energy savings and improved system performance.

6. System Integration:

Screw compressors are often integrated into complex refrigeration systems, working in tandem with other components such as condensers, evaporators, expansion valves, and control systems. This integration ensures efficient heat transfer, proper refrigerant flow, and effective temperature control.

It’s important to note that the selection of a screw compressor for refrigeration applications should consider factors such as cooling capacity requirements, operating conditions, refrigerant type, system configuration, and specific industry regulations.

In summary, screw compressors are well-suited for refrigeration applications, especially in industrial settings. Their efficiency, reliability, and capacity make them a popular choice for large-scale refrigeration systems. Whether in cold storage facilities, food processing plants, or HVAC systems, screw compressors play a crucial role in maintaining optimal temperatures and preserving perishable goods.

air compressor

What Is the Efficiency of Screw Compressors?

The efficiency of screw compressors can vary depending on various factors, including the design, operating conditions, and maintenance. Here’s a detailed explanation of the efficiency of screw compressors:

1. Isothermal Efficiency:

Isothermal efficiency refers to the ideal efficiency of a compressor operating under isothermal conditions. In reality, screw compressors experience temperature rise during compression, and therefore, they do not achieve isothermal efficiency. The compression process in screw compressors is considered to be relatively close to isothermal compared to other compressor types, such as reciprocating compressors. This is due to the continuous and smooth flow of air or gas through the compression chamber, which helps in minimizing temperature differences.

2. Adiabatic Efficiency:

Adiabatic efficiency refers to the actual efficiency of a compressor, taking into account the heat generated during compression. Screw compressors typically have higher adiabatic efficiency compared to reciprocating compressors. The helical design of the rotors and the presence of intermeshing lobes allow for efficient compression with minimal energy loss. The adiabatic efficiency of a screw compressor can be influenced by factors such as the compression ratio, rotational speed, and discharge pressure.

3. Overall Efficiency:

The overall efficiency of a screw compressor takes into account various factors, including mechanical losses, power consumption, and auxiliary power requirements. Mechanical losses can occur due to friction between the rotors, bearings, and other moving parts. Well-maintained screw compressors with properly lubricated components and well-aligned rotors can minimize mechanical losses and improve overall efficiency. Power consumption is another factor affecting efficiency, and it can vary depending on the size, design, and operating conditions of the compressor.

4. Energy Efficiency:

Energy efficiency is an important aspect of screw compressors. It relates to the ability of the compressor to convert electrical energy into compressed air with minimal energy waste. Energy-efficient screw compressors are designed to optimize the compression process, reduce power consumption, and maximize output for a given input. Variable Speed Drive (VSD) screw compressors, for example, can adjust the rotational speed to match the compressed air demand, resulting in improved energy efficiency and significant energy savings.

It’s important to note that the efficiency of screw compressors can vary depending on the specific model, design features, and operating conditions. Regular maintenance, including proper lubrication, cleaning, and component inspection, is crucial for maintaining high efficiency levels. Additionally, selecting the right size and type of screw compressor for the intended application is essential to achieve optimal efficiency and performance.

In summary, screw compressors are known for their relatively high efficiency compared to other compressor types. While they may not achieve perfect isothermal efficiency, their adiabatic efficiency, overall efficiency, and energy efficiency make them suitable for a wide range of industrial applications.

China high quality Standard Direct Drive Screw/Permanent Magnet Variable Speed/Pm VSD Screw Air Compressor   with Best SalesChina high quality Standard Direct Drive Screw/Permanent Magnet Variable Speed/Pm VSD Screw Air Compressor   with Best Sales
editor by CX 2024-05-02

China Custom CHINAMFG Quality Garage Direct Drive Oil Free Industrial Screw Air Compressor Manufacturer wholesaler

Product Description

Product Description

Quality Garage Direct Drive Oil Free Industrial Screw Air Compressor Manufacturer

Screw Air Compressor

Screw Air Compressor A Series
Model BD-10A BD-15A BD-20A BD-30A BD-40A BD-50A

Air Volumn(m³/h)

Air Pressure(Mpa)

1.35/0.7 1.8/0.7 2.5/0.7 3.8/0.7 5.2/0.7 6.5/0.7
1.2/0.8 1.6/0.8 2.3/0.8 3.4/0.8 5.0/0.8 6.1/0.8
1.0/1.0 1.3/1.0 2.0/1.0 3.1/1.0 4.3/1.0 5.5/1.0
0.8/1.2 1.0/1.2 1.7/1.2 2.7/1.2 3.8/1.2 4.9/1.2
Ambient Temperature -5~+45ºC
Cooling Way Air Cooling

Discharge Temperature

Ambient Temperature<15ºC
Lubrication – oil 6L 12L 18L 20L 20L 20L
Noise 66±2 68±2
Driving Way Belt Drive Direct Drive
Electricity 380V 3PH 50Hz
Power 7.5KW 11KW 15KW 22KW 30KW 37KW
Starting Method Star-Delta Starting
Dimension L 960mm 1100mm 1100mm 1380mm 1500mm 1500mm
W 580mm 710mm 710mm 850mm 1000mm 1000mm
H 770mm 1100mm 1100mm 1250mm 1350mm 1350mm
Net Weight 178KG 327KG 337KG 500KG 683KG 683KG
Outlet Pipe Diameter 1/2” 1” 1” 5/4” 3/2” 3/2”

 
Direct drive screw air compressor

Connet with rotor, motor and it’s outer case form a unit which can achieve zero maintenance. Besides, due to less spare parts, direct drive has less transmission loss to make it more table and get longer life.

 

Company Profile

PRODUCT SHOWROOM:

MEETING ROOM:

FACTORY VIEW:

TRADE SHOWS:

 

FAQ

 

Q1:Are you Manufacturer or Trading Company?
A:We are a professional manufacturer with our own export department.
Our factory was established in 2000.

Q2:Where is your factory located? How can I visit there? 
A:Our company is located in HangZhou City, China.All clients, from home and abroad,are warmly welcomed to visit us.

Q3. What is your terms of packing?

A: Generally, we pack our goods by thicker bubble paper, some of them are packed by carton.

Q4. What is your terms of payment?
A: By T/T, 30% as deposit for production, and 70% balance before delivery. We’ll show you the photos of the products and packages before you pay the balance.

Q5. What is your terms of delivery?
A: Normally our quotation is under FOB HangZhou, but we also accept EXW, FOB, CFR, CIF, DDU. 

Q6. How about your delivery time?
A: Generally, it will take 10 to 15 days after receiving full payment. If your voltage is different from 380V/3PH/50Hz, the delivery time will be around 20 days for custom-made motors or electric components. 

Q7.Can we customize our product?
A:Yes,you can.Customized material and standard are acceptable. We can provide different standards according to your market and favor.

Q8: How do you make our business long-term and good relationship?
A1. We keep good quality and competitive price to ensure our customers benefit ;
A2. We respect every customer as our friend and we sincerely do business and make friends with them.

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

After-sales Service: Online Service
Warranty: 12 Months
Lubrication Style: Oil-free
Cooling System: Air Cooling
Power Source: Diesel Engine
Cylinder Position: Horizontal
Customization:
Available

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air compressor

What Is the Noise Level of Screw Compressors?

The noise level of screw compressors can vary depending on several factors, including the compressor’s size, design, operating conditions, and the presence of noise-reducing features. Here’s a detailed explanation:

Screw compressors are known for their relatively low noise levels compared to other types of compressors, such as reciprocating compressors. However, the actual noise level can still vary depending on the specific compressor model and its operating parameters.

The noise level of screw compressors is typically measured in decibels (dB) and can range from around 60 dB to 90 dB or higher. It’s important to note that the noise level is logarithmic, meaning that a small increase in decibel level represents a significant increase in perceived noise intensity.

Several factors can influence the noise level of screw compressors:

  • 1. Compressor Size and Design: Larger screw compressors tend to produce higher noise levels compared to smaller ones. This is because larger compressors generally have more powerful motors and larger rotating components, which can generate more noise. The design of the compressor, including the type of rotor profiles and the presence of noise-reducing features, can also impact the noise level.
  • 2. Operating Conditions: The operating conditions of the compressor, such as the speed of rotation and the discharge pressure, can affect the noise level. Higher speeds and pressures may result in increased noise production. Additionally, the presence of pulsations or vibrations in the system can contribute to noise generation.
  • 3. Sound Insulation and Enclosures: Some screw compressors come with built-in sound insulation or enclosures to reduce noise levels. These features help contain the noise within the compressor unit and minimize the propagation of noise to the surrounding environment. Compressors equipped with sound insulation or enclosures generally have lower noise levels compared to open-frame compressors.
  • 4. Installation and Surrounding Environment: The installation of the compressor and the characteristics of the surrounding environment can influence the perceived noise level. Factors such as the proximity of the compressor to sensitive areas, the presence of sound-absorbing materials, and the layout of the facility can impact the noise propagation and overall noise perception.
  • 5. Maintenance and Wear: Proper maintenance of the compressor, including regular inspection and lubrication of components, can help minimize noise levels. Wear and tear on the compressor’s internal parts can lead to increased noise production, so timely repairs or component replacements are important to maintain optimal performance and minimize noise.

It’s worth noting that noise levels are typically provided by manufacturers as specifications for each compressor model. These specifications can help users select compressors with noise levels that meet their specific requirements or comply with local noise regulations.

In summary, the noise level of screw compressors can range from around 60 dB to 90 dB or higher, depending on factors such as compressor size, design, operating conditions, and the presence of noise-reducing features. Proper installation, maintenance, and the use of sound insulation or enclosures can help minimize noise levels and create a more comfortable and quieter operating environment.

air compressor

Can Screw Compressors Be Used for Medical Air Supply?

Yes, screw compressors can be used for medical air supply. Here’s a detailed explanation:

Screw compressors are commonly employed in various applications, including medical air supply systems. Medical air is a critical utility in healthcare facilities, used for various purposes such as respiratory therapy, anesthesia, and surgical tools. Here are some key points to consider:

1. Reliability and Efficiency:

Screw compressors are known for their reliability and efficiency. They can provide a continuous and reliable source of compressed air, ensuring a stable supply for medical applications. The rotary screw design allows for smooth and efficient compression, minimizing energy consumption and maximizing system performance.

2. Oil-Free Operation:

In medical applications, it is crucial to ensure the purity of the compressed air. Screw compressors can be designed and certified to provide oil-free air, eliminating the risk of oil contamination in the medical air supply. Oil-free screw compressors incorporate specialized sealing systems and filtration to prevent oil carryover, making them suitable for medical air applications.

3. Air Quality Standards:

Medical air must meet specific air quality standards to ensure patient safety and treatment effectiveness. Standards such as the European Pharmacopoeia (Ph. Eur.) or the United States Pharmacopeia (USP) define the required purity levels for medical air, including limits on particulate matter, moisture content, and microbial contamination. Screw compressors can be equipped with appropriate filtration and purification systems to meet these standards.

4. Integrated Drying and Filtration:

Some screw compressors designed for medical air applications incorporate integrated drying and filtration systems. These systems remove moisture and contaminants from the compressed air, ensuring it meets the required quality standards. Integrated drying systems can include refrigerated dryers, desiccant dryers, or membrane dryers, depending on the specific needs of the medical air supply system.

5. Redundancy and Backup Systems:

Medical air supply systems often require a high level of reliability and continuity. Screw compressors can be configured with redundancy and backup systems to ensure uninterrupted supply. Multiple compressors can be installed in parallel, with automatic switching mechanisms to maintain supply in case of a compressor failure or maintenance activities.

6. Monitoring and Alarms:

Modern screw compressors used in medical air supply systems often feature advanced monitoring capabilities. They can continuously monitor and record key parameters such as pressure, temperature, and system performance. Alarms and alerts can be configured to notify operators or maintenance personnel in case of abnormal conditions or potential issues with the compressor.

7. Compliance with Standards and Regulations:

When using screw compressors for medical air supply, it is essential to comply with relevant standards and regulations. These may include medical device regulations, electrical safety standards, and guidelines specific to medical gas systems. Compliance ensures that the medical air supply system meets the necessary safety and quality requirements.

In summary, screw compressors can be used for medical air supply, providing reliable and efficient compressed air for various medical applications. With their reliability, oil-free operation, adherence to air quality standards, integrated drying and filtration capabilities, and the ability to incorporate redundancy and monitoring features, screw compressors are well-suited for medical air supply systems in healthcare facilities.

air compressor

Can Screw Compressors Be Used in Industrial Applications?

Yes, screw compressors are widely used in industrial applications and are well-suited for various industrial processes. Here’s a detailed explanation:

1. Manufacturing and Assembly:

Screw compressors find extensive use in manufacturing and assembly processes. They provide a reliable source of compressed air for powering pneumatic tools, such as drills, impact wrenches, and spray guns. Compressed air is also used for operating pneumatic cylinders and valves, facilitating automation and control in industrial production lines.

2. Industrial Automation:

In industrial automation systems, screw compressors play a crucial role in providing compressed air for actuating control valves, operating robotic arms, and powering pneumatic actuators. The continuous and reliable supply of compressed air from screw compressors ensures the smooth operation of automated machinery and equipment.

3. HVAC Systems:

Screw compressors are commonly used in large-scale heating, ventilation, and air conditioning (HVAC) systems. They are employed in chillers, which cool water or air for air conditioning and refrigeration purposes. Screw compressors in HVAC systems offer high energy efficiency, making them cost-effective and environmentally friendly options for large commercial and industrial buildings.

4. Food and Beverage Industry:

The food and beverage industry relies on screw compressors for various applications. They are used for providing compressed air in food processing and packaging operations, such as pneumatic conveying, filling, labeling, and sealing. Screw compressors used in this industry are often of the oil-free type to ensure air purity and prevent contamination of food products.

5. Pharmaceuticals and Healthcare:

In the pharmaceutical and healthcare sectors, screw compressors are vital for critical applications. They provide clean and oil-free compressed air required for pharmaceutical manufacturing processes, including tablet coating, fermentation, lyophilization, and cleanroom operations. Screw compressors with strict air quality standards, such as oil-free and contaminant-free options, are commonly used in these industries.

6. Energy and Power Generation:

Screw compressors play a significant role in energy and power generation facilities. They are used for processes such as gas compression, pneumatic conveying of coal and biomass, and control air supply in power plants. Screw compressors in these applications are designed to handle high pressures and large volumes of gas.

7. Mining and Construction:

In mining and construction industries, screw compressors are employed for various tasks. They power pneumatic tools and equipment used in drilling, rock blasting, material handling, and construction activities. Screw compressors are valued for their reliability, continuous operation, and ability to withstand harsh operating conditions.

8. Oil and Gas Industry:

The oil and gas industry extensively uses screw compressors for gas compression and processing. Screw compressors are employed in natural gas pipelines, gas processing plants, and refineries. They handle the compression of gases, such as natural gas, hydrogen, and process gases, ensuring efficient transportation and refining operations.

These are just a few examples of the industrial applications where screw compressors are commonly used. Their high efficiency, continuous operation, compact design, and capacity flexibility make them well-suited for a wide range of industrial processes and systems.

China Custom CHINAMFG Quality Garage Direct Drive Oil Free Industrial Screw Air Compressor Manufacturer   wholesaler China Custom CHINAMFG Quality Garage Direct Drive Oil Free Industrial Screw Air Compressor Manufacturer   wholesaler
editor by CX 2024-04-27

China Best Sales Energy Saving CHINAMFG Low Noise Silent Weg Ie4 IP55 Motor Air Cooled Stationary Electric CHINAMFG Belt Drive Rotary Screw Air Compressor for General Industry with Hot selling

Product Description

Product Description

ZIQI CHINAMFG Screw Air Compressor Advantages:

A.80% components of CHINAMFG Compressor adopt global well known reliable brand to make sure the air compressor with high quality,durable,energy saving:
1.Core part:Germany GHH RAND screw air end ;
2.Motor:adopt Brazil WEG brand,the second biggest motor manufacturer in the world,IE4 energy saving standard 3 phase induction motor,IP55 protection;
3.Italian EURE oil air vessel ,the lead pressure vessel manufacturer in the world;
4.Italian Manuli oil tube ;
5.French Schneider electric system;
6.Sweden CHINAMFG bearings

Energy saving:
The air compressor equiped the frequency inverter,to make the air compressor with variable speed drive [VSD].The principle of VSD is to adjust the motor rotation speed automatically according to the actual air consumption. The reduced system pressure decreases the total energy consumption of the whole system, which can reduce energy costs by 35% or more.

Technical Parameter

Model Air pressure Max air displacement  Motor power transmission dimension Weight Noise Outlet
cooling type
mpa bar(e)  psi(g)  m3/min  cfm  hp  kw  belt drive 
&
air cooling
L(mm) W(mm) H(mm) Kgs dB(A) mm
GA-3.7A 0.7 7 102 0.55 19 5 3.7  680  660  780  220 60±2  20
0.8 8 116 0.45 16
1 10 145 0.35 12
GA-5.5A 0.7 7 102 0.8 28 7 5.5 680 660 780 230 61±2 20
0.8 8 116 0.7 25
1 10 145 0.6 21
1.3 13 189 0.5 18
GAS-7.5A VFC 0.7 7 102 1.3 46 10 7.5 950 650 915 270 62±2 20
0.8 8 116 1.2 42
1 10 145 1.1 39
1.3 13 189 0.9 32
GAS-11A VFC 0.7 7 102 1.8 64 15 11 950 650 915 280 63±2 20
0.8 8 116 1.7 60
1 10 145 1.5 53
1.3 13 189 1.2 42
GAS-15A VFC 0.7 7 102 2.7 95 20 15 1260 850 1220 540 66±2 25
0.8 8 116 2.5 88
1 10 145 2.3 81
1.3 13 189 2 71
GAS-18.5A VFC 0.7 7 102 3.2 113 25 18.5 1260 850 1220 550 67±2 25
0.8 8 116 3 106
1 10 145 2.8 99
1.3 13 189 2.4 85
GAS-22A VFC 0.7 7 102 3.8 134 30 22 1260 850 1220 560 67±2 25
0.8 8 116 3.6 127
1 10 145 3.2 113
1.3 13 189 2.8 99
GAS-30A VFC 0.7 7 102 5.7 201 40 30 1500 970 1375 780 67±2 40
0.8 8 116 5.5 194
1 10 145 5 177
1.3 13 189 4.5 159
GAS-37A VFC 0.7 7 102 6.8 240 50 37 1500 970 1375 800 68±2 40
0.8 8 116 6.31 222
1 10 145 5.7 201
1.3 13 189 5 177
GAS-45A VFC 0.7 7 102 7.9 279 60 45 1500 970 1375 820 69±2 40
0.8 8 116 7.4 261
1 10 145 6.9 244
1.3 13 189 6.1 215
GAS-55A VFC 0.7 7 102 10.9 385 75 55 direct drive &air cooling or water cooling 2150 1326 1766 1550 69±2 50
0.8 8 116 10.4 367
1 10 145 9.4 332
1.3 13 189 8.6 304
GAS-75A VFC 0.7 7 102 14.5 512 100 75 2150 1326 1766 1600 70±2 50
0.8 8 116 13.8 487
1 10 145 12.6 445
1.3 13 189 11.2 395
GAS-90A VFC 0.7 7 102 17 600 120 90 2545 1450 1900 2500 75±2 65
0.8 8 116 16.5 583
1 10 145 15.2 537
1.3 13 189 14 494

*For other requirements,please contact the salesman.

Company Information

Packaging & Shipping

FAQ

 

Are you manufacturer?
ZIQI: Yes,we are professional air compressor manufacturer over 10 years and our factory located in ZheJiang .
How long is your air compressor warranty?
ZIQI: For 1 year.
Do you provide After- sales service parts?
ZIQI: Of course, We could provide easy- consumable spares.
How long could your air compressor be used?
ZIQI: Generally, more than 10 years.
How about your price?
ZIQI: Based on high quality, Our price is very competitive in this market all over the world.
How about your customer service?
ZIQI: For email, we could reply our customers’ emails within 2 hours.
Do you support OEM?
ZIQI: YES, and we also provide multiple models to select.

How to get quicker quotation?

When you send us inquiry, please confirm below information at the same time:
* What is the air displacement (m3/min,cfm/min)?
* What is the air pressure (mpa,bar,psi)?
* What is the voltage in your factory (v/p/Hz)?
* It is ok if you need air tank, air dryer and filters.
This information is helpful for us to check suitable equipment solution and quotation quickly.

 

Hot Products

VSD Oil-Free Screw Air Compressor Combined Screw Air Compressor Two Stage Screw Air Compressor

 

Contact

Bob Cui | Overseas Sale Manager

ZIQI Compressor(ZheJiang )Co.,Ltd

Add:No.280,Wangwei West Rd.Fengjing Industrial Park,Xihu (West Lake) Dis.n Dist.,ZheJiang ,CN.

 

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

After-sales Service: Online Support
Warranty: Online Support
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Customization:
Available

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air compressor

How Do You Troubleshoot Common Issues with Gas Air Compressors?

Troubleshooting common issues with gas air compressors involves identifying and addressing potential problems that may arise during operation. Here’s a detailed explanation of the troubleshooting process:

1. Start with Safety Precautions:

Prior to troubleshooting, ensure that the gas air compressor is turned off and disconnected from the power source. Follow proper safety procedures, such as wearing appropriate personal protective equipment (PPE), to avoid accidents or injuries.

2. Check Power Supply and Connections:

Verify that the compressor is receiving power and that all electrical connections are secure. Inspect the power cord, plug, and any switches or controls to ensure they are functioning properly. If the compressor is equipped with a battery, check its charge level and connections.

3. Check Fuel Supply:

For gas air compressors that use gasoline or propane, ensure that there is an adequate fuel supply. Check the fuel tank level and verify that the fuel shut-off valve is open. If the compressor has been sitting idle for an extended period, old or stale fuel may cause starting issues. Consider draining and replacing the fuel if necessary.

4. Inspect Air Filters:

Dirty or clogged air filters can restrict airflow and affect the compressor’s performance. Check the intake air filters and clean or replace them as needed. Clogged filters can be cleaned with compressed air or washed with mild detergent and water, depending on the type of filter.

5. Check Oil Level and Quality:

If the gas air compressor has an engine with an oil reservoir, verify the oil level using the dipstick or oil level indicator. Insufficient oil can lead to engine damage or poor performance. Additionally, check the oil quality to ensure it is clean and within the recommended viscosity range. If needed, change the oil following the manufacturer’s guidelines.

6. Inspect Spark Plug:

If the gas air compressor uses a spark plug ignition system, inspect the spark plug for signs of damage or fouling. Clean or replace the spark plug if necessary, following the manufacturer’s recommendations for gap setting and torque.

7. Check Belts and Pulleys:

Inspect the belts and pulleys that drive the compressor pump. Loose or worn belts can cause slippage and affect the compressor’s performance. Tighten or replace any damaged belts, and ensure that the pulleys are properly aligned.

8. Listen for Unusual Noises:

During operation, listen for any unusual or excessive noises, such as grinding, rattling, or squealing sounds. Unusual noises could indicate mechanical issues, loose components, or improper lubrication. If identified, consult the compressor’s manual or contact a qualified technician for further inspection and repair.

9. Consult the Owner’s Manual:

If troubleshooting steps do not resolve the issue, refer to the compressor’s owner’s manual for specific troubleshooting guidance. The manual may provide additional troubleshooting steps, diagnostic charts, or recommended maintenance procedures.

10. Seek Professional Assistance:

If the issue persists or if you are unsure about performing further troubleshooting steps, it is recommended to seek assistance from a qualified technician or contact the manufacturer’s customer support for guidance.

Remember to always prioritize safety and follow proper maintenance practices to prevent issues and ensure the reliable performance of the gas air compressor.

air compressor

Can Gas Air Compressors Be Used for Pneumatic Tools?

Yes, gas air compressors can be used for pneumatic tools. Here’s a detailed explanation:

1. Versatile Power Source:

Gas air compressors, powered by gasoline or diesel engines, provide a portable and versatile power source for operating pneumatic tools. They eliminate the need for electrical power supply, making them suitable for remote locations or construction sites where electricity may not be readily available.

2. High Power Output:

Gas air compressors typically offer higher power output compared to electric compressors of similar size. This high power output enables gas compressors to deliver the necessary air pressure and volume required by pneumatic tools, ensuring optimal tool performance.

3. Mobility and Portability:

Gas air compressors are often designed with mobility and portability in mind. They are compact and equipped with wheels or handles, allowing for easy transportation to different job sites. This mobility is advantageous when using pneumatic tools in various locations or when working in confined spaces.

4. Continuous Operation:

Gas air compressors can provide continuous air supply for pneumatic tools without the need for frequent pauses or recharging. As long as there is an adequate fuel supply, gas compressors can operate for extended periods, allowing uninterrupted use of pneumatic tools for tasks such as drilling, nailing, sanding, or painting.

5. Suitable for High-Demand Applications:

Pneumatic tools used in heavy-duty applications often require a robust air supply to meet their performance requirements. Gas air compressors can generate higher air flow rates and maintain higher operating pressures, making them suitable for high-demand pneumatic tools like jackhammers, impact wrenches, or sandblasters.

6. Flexibility in Compressor Size:

Gas air compressors are available in various sizes and capacities, allowing users to choose the compressor that best matches the air demands of their pneumatic tools. From small portable compressors for light-duty tasks to larger industrial-grade compressors for heavy-duty applications, there is a wide range of options to suit different tool requirements.

7. Reduced Dependency on Electrical Infrastructure:

Using gas air compressors for pneumatic tools reduces reliance on electrical infrastructure. In situations where the electrical power supply is limited, unreliable, or expensive, gas compressors offer a viable alternative, ensuring consistent tool performance without concerns about power availability.

It’s important to note that gas air compressors emit exhaust gases during operation, so proper ventilation is necessary when using them in enclosed spaces to ensure the safety of workers.

In summary, gas air compressors can effectively power pneumatic tools, offering mobility, high power output, continuous operation, and suitability for various applications. They provide a reliable and portable solution for utilizing pneumatic tools in locations where electrical power supply may be limited or unavailable.

air compressor

What Are the Primary Applications of Gas Air Compressors?

Gas air compressors have a wide range of applications across various industries and activities. These compressors, powered by gas engines, provide a portable and versatile source of compressed air. Here’s a detailed explanation of the primary applications of gas air compressors:

1. Construction Industry:

Gas air compressors are extensively used in the construction industry. They power a variety of pneumatic tools and equipment, such as jackhammers, nail guns, impact wrenches, and concrete breakers. The portable nature of gas air compressors makes them ideal for construction sites where electricity may not be readily available or practical to use.

2. Agriculture and Farming:

Gas air compressors find applications in the agricultural sector. They are used to operate air-powered machinery and tools, including pneumatic seeders, sprayers, and agricultural pumps. Gas air compressors provide the necessary power to carry out tasks such as crop seeding, irrigation, and pest control in agricultural settings.

3. Recreational Activities:

Gas air compressors are commonly utilized in recreational activities. They are used to inflate tires, sports balls, inflatable structures, and recreational equipment such as air mattresses, rafts, and inflatable toys. Gas air compressors provide a convenient and portable solution for inflating various recreational items in outdoor settings.

4. Mobile Service Operations:

Gas air compressors are employed in mobile service operations, such as mobile mechanics, tire service providers, and mobile equipment repair services. These compressors power air tools and equipment required for on-site repairs, maintenance, and servicing of vehicles, machinery, and equipment. The mobility of gas air compressors allows service providers to bring their tools and compressed air source directly to the location of the service requirement.

5. Remote Job Sites:

Gas air compressors are well-suited for remote job sites or locations without access to electricity. They are commonly used in industries such as mining, oil and gas exploration, and remote construction projects. Gas air compressors power pneumatic tools, machinery, and drilling equipment in these environments, providing a reliable source of compressed air for operational needs.

6. Emergency and Backup Power:

In emergency situations or during power outages, gas air compressors can serve as a backup power source. They can power essential equipment and systems that rely on compressed air, such as emergency lighting, communication devices, medical equipment, and backup generators. Gas air compressors provide a reliable alternative power solution when electrical power is unavailable or unreliable.

7. Sandblasting and Surface Preparation:

Gas air compressors are used in sandblasting and surface preparation applications. They provide the high-pressure air necessary for propelling abrasive media, such as sand or grit, to remove paint, rust, or other coatings from surfaces. Gas air compressors offer the power and portability required for sandblasting operations in various industries, including automotive, metal fabrication, and industrial maintenance.

8. Off-Road and Outdoor Equipment:

Gas air compressors are commonly integrated into off-road and outdoor equipment, such as off-road vehicles, utility trucks, and recreational vehicles. They power air-operated systems, including air suspension systems, air brakes, air lockers, and air horns. Gas air compressors provide the necessary compressed air for reliable and efficient operation of these systems in rugged and outdoor environments.

Overall, gas air compressors have diverse applications in construction, agriculture, recreational activities, mobile service operations, remote job sites, emergency power backup, sandblasting, and various off-road and outdoor equipment. Their portability, versatility, and reliable power supply make them indispensable tools in numerous industries and activities.

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editor by CX 2024-04-26

China Best Sales Heavy Duty Diesel Engine Portable Direct Drive Rotary Screw Type Air Compressor Price for Jack Hammer, Drilling, and Mining Industrial Air Compressor best air compressor

Product Description

Diesel Engine Portable Rotary Screw Air Compressor

Product Parameters

 

Product Description

Environmental-friendly Diesel Engine

Famous brand diesel engines: Xichai, Yuchai
National III emission standards
Strong power and low fuel consumption.

 

Hot Sale Products

 

 

 

            2~10bar Oil-injected                        7~16bar All-in-1                       Small Single-phase
       Screw Air Compressor                   Screw Air Compressor                 Screw Air Compressor  

 

          2~40bar 100% Oil-free                   8~12bar 100% Oil-free                Diesel Engine Portable
       Screw Air Compressor                   Scroll Air Compressor                 Screw Air Compressor  

 

 

Main Product

 

What we can supply:

* Oil-injected Screw Air Compressor (2~16 bar)
* All-in-1 Screw Air Compressor with Tank, Dryer, and Filters (7~16 bar)
* Single-phase Small Screw Air Compressor for Home use (8~10 bar)
* Water-injected Oil-free Screw Air Compressor (2~40 bar)
* Oil-free Scroll Air Compressor (8~12 bar)
* Diesel&Electric Engine Portable Screw Air Compressor (8~30 bar)
* Air Dryer, Air tank, Filters, and other Spare parts

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

After-sales Service: 24*7 Online Services and Video Guide
Warranty: 1 Year for The Whole Machine & 2 Years for Airend
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Installation Type: Movable Type
Customization:
Available

|

air compressor

How Does Variable Speed Control Work in Screw Compressors?

Variable speed control in screw compressors is a technology that allows the compressor’s rotational speed to be adjusted according to the compressed air or gas demand. This control method offers several benefits in terms of energy efficiency and system performance. Here’s a detailed explanation:

Variable speed control, also known as variable frequency drive (VFD) or inverter control, works by adjusting the speed of the compressor’s drive motor. The drive motor is typically an electric motor that powers the rotation of the compressor’s screw rotors.

The key components and operation of variable speed control in screw compressors are as follows:

  • 1. Drive Motor: The drive motor is connected to the compressor’s screw rotors and provides the rotational power required for compression. It is an electric motor capable of operating at variable speeds.
  • 2. Inverter or Variable Frequency Drive (VFD): The inverter or VFD is an electronic device that controls the speed of the drive motor. It converts the incoming electrical power into adjustable frequency and voltage, allowing precise control of the motor’s rotational speed.
  • 3. Control System: The control system of the screw compressor monitors and adjusts the speed of the drive motor based on the compressed air or gas demand. It receives input signals from sensors that measure parameters such as pressure, flow rate, or system demand, and sends corresponding signals to the inverter or VFD to regulate the motor speed.
  • 4. Speed Adjustment: When the demand for compressed air or gas decreases, the control system reduces the motor speed by decreasing the frequency and voltage supplied by the inverter or VFD. This results in a lower rotational speed of the screw rotors, reducing the compression capacity and power consumption of the compressor.
  • 5. Energy Efficiency: Variable speed control allows the compressor to match the output to the actual demand, avoiding energy wastage associated with constant-speed compressors. By operating at lower speeds during periods of lower demand, energy consumption can be significantly reduced. This energy-saving capability is particularly advantageous in applications with varying air or gas requirements.
  • 6. Smooth Operation: Variable speed control enables smooth and gradual motor acceleration and deceleration, minimizing mechanical stress on the compressor components and reducing the likelihood of sudden pressure surges or system shutdowns.
  • 7. System Stability: By adjusting the compressor’s speed to match the demand, variable speed control helps maintain stable system pressure and prevents excessive cycling of the compressor. This contributes to improved system performance and longevity.

It’s worth noting that variable speed control is more commonly found in larger screw compressors used in industrial and commercial applications. Smaller screw compressors may utilize fixed-speed motors due to cost considerations or simpler system requirements.

Overall, variable speed control in screw compressors offers precise capacity modulation, improved energy efficiency, enhanced system stability, and reduced maintenance requirements, making it a preferred choice in many applications where compressed air or gas demand fluctuates.

air compressor

Are There Regulations Governing the Use of Screw Compressors in Certain Industries?

Yes, there are regulations governing the use of screw compressors in certain industries. Here’s a detailed explanation:

1. Occupational Safety and Health Administration (OSHA):

In the United States, OSHA sets standards and regulations to ensure the safety and health of workers. While OSHA does not have specific regulations solely focused on screw compressors, they have general requirements that apply to compressed air systems, including screw compressors. These requirements cover aspects such as electrical safety, guarding of moving parts, and proper maintenance practices to ensure worker safety.

2. Environmental Protection Agency (EPA):

The EPA in the United States regulates air emissions to protect the environment and public health. While screw compressors themselves are not directly regulated, if the compressed air is used in processes that emit pollutants, such as in industrial manufacturing, the EPA may have regulations that apply to those specific industries or processes.

3. Industry-Specific Regulations:

Certain industries have specific regulations that govern the use of screw compressors or compressed air systems. These regulations are often aimed at ensuring product quality, safety, and environmental compliance. Some examples include:

a) Food and Beverage Industry: The food and beverage industry often has strict regulations to ensure product safety and prevent contamination. Compressed air used in processes such as packaging, conveying, or powering equipment may need to meet specific quality standards, such as those established by the Food and Drug Administration (FDA) or the Global Food Safety Initiative (GFSI).

b) Pharmaceutical Industry: The pharmaceutical industry has stringent regulations to ensure product quality, safety, and compliance with Good Manufacturing Practices (GMP). Compressed air used in pharmaceutical manufacturing processes must meet specific standards, such as those outlined in the United States Pharmacopeia (USP) or the European Pharmacopoeia (Ph. Eur.).

c) Electronics Industry: The electronics industry often requires clean and dry compressed air to prevent damage to sensitive electronic components. Standards such as ISO 8573, which specify air purity classes for different contaminants in compressed air systems, may be applicable.

d) Automotive Industry: The automotive industry may have regulations and standards related to the use of compressed air in manufacturing processes, such as painting or pneumatic tools. These regulations often focus on worker safety, product quality, and environmental compliance.

It’s important for organizations in these industries to be aware of and comply with the relevant regulations governing the use of screw compressors. Compliance helps ensure the safety of workers, product quality, environmental protection, and overall regulatory compliance.

It’s worth noting that regulations may vary by country and region, so it’s essential to consult the specific regulations applicable to the industry and location where the screw compressors are being used.

air compressor

How Do Screw Compressors Compare to Piston Compressors?

Screw compressors and piston compressors are two common types of compressors used for various applications. Here’s a detailed comparison between these two types:

1. Working Principle:

Screw Compressors: Screw compressors use intermeshing rotors (usually a male and female rotor) to compress air or gas. The rotors rotate in opposite directions, creating compression chambers that gradually reduce in volume, compressing the air or gas. Piston Compressors: Piston compressors, also known as reciprocating compressors, use a piston and cylinder arrangement to compress air or gas. The piston moves back and forth within the cylinder, creating compression by reducing the volume of the chamber.

2. Continuous vs. Intermittent Compression:

Screw Compressors: Screw compressors provide continuous compression, which means they can deliver a steady flow of compressed air or gas without pulsations. The compression process is smooth and continuous, resulting in less vibration and noise. Piston Compressors: Piston compressors provide intermittent compression due to the reciprocating motion of the piston. The compression process is characterized by pulsations, resulting in pressure fluctuations and higher vibration levels compared to screw compressors.

3. Efficiency:

Screw Compressors: Screw compressors are known for their relatively high efficiency. They can achieve higher isothermal and adiabatic efficiency compared to piston compressors. The smooth and continuous compression process in screw compressors minimizes energy losses and heat generation, resulting in improved efficiency. Piston Compressors: Piston compressors have lower overall efficiency compared to screw compressors. The reciprocating motion of the piston leads to energy losses due to friction, heat generation, and pressure pulsations. These factors can reduce the efficiency of piston compressors, especially at higher compression ratios.

4. Size and Portability:

Screw Compressors: Screw compressors are generally more compact and require less space compared to piston compressors of similar capacity. They have a simpler design with fewer moving parts, making them relatively lightweight and easier to install. Screw compressors are often mounted on a skid or integrated into compact packages, offering convenient portability. Piston Compressors: Piston compressors are typically larger and bulkier compared to screw compressors of similar capacity. They have more complex designs with multiple moving parts, including pistons, connecting rods, and valves. The larger size and weight of piston compressors make them less portable and require more installation space.

5. Maintenance and Service:

Screw Compressors: Screw compressors generally require less maintenance compared to piston compressors. They have fewer moving parts, reducing the chances of wear and tear. Screw compressors often have longer service intervals and lower maintenance costs. However, proper lubrication and regular inspections are still necessary to ensure optimal performance and efficiency. Piston Compressors: Piston compressors require regular maintenance due to the higher number of moving parts. Components such as pistons, rings, valves, and bearings may require more frequent inspections, lubrication, and replacements. Maintenance costs and service intervals for piston compressors are typically higher compared to screw compressors.

6. Noise and Vibration:

Screw Compressors: Screw compressors operate with lower noise and vibration levels compared to piston compressors. The continuous and smooth compression process in screw compressors results in reduced vibrations and quieter operation, making them suitable for noise-sensitive environments. Piston Compressors: Piston compressors can generate higher noise levels and vibrations due to the reciprocating motion of the piston and the pulsations during compression. Additional measures, such as sound insulation and vibration dampening, may be required to minimize noise and vibration in piston compressors.

Both screw compressors and piston compressors have their advantages and disadvantages depending on specific application requirements. Screw compressors are favored in applications that demand continuous and efficient compression with minimal pulsations and lower noise levels. Piston compressors are suitable for applications that require intermittent compression, lower initial investment, and simplicity. Factors such as desired flow rate, pressure range, operating conditions, and cost considerations play a crucial role in selecting the appropriate compressor type for a given application.

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editor by CX 2024-03-27

China Hot selling Permanent Magnet Synchronous Motor (PMSM) Variable Frequency Converter Drive Pm VSD Inverter Direct Driven Double Screw Air Compressor with Affordable Price with Best Sales

Product Description

30HP 22KW Pm Oil Cooled  Energy Saving Screw Air Compressor

Technical Parameters Of PM Variable speed screw air compressor:
 

Model WZS-20EVA
Air Flow/Working pressure 2.2m3/min @ 8bar
1.8m3/min @ 10bar
Cooling type of COMPRESSOR Air cooling
Cooling type of MOTOR Air cooling
Driven method Direct Driven
Start way Soft VSD Start
VSD inverter HOLIP / VEICHI
Exhaust Temp. < ambient temp. +8 degrees
Oil content <2ppm
Noise 63±2 dB(A)
Power 380VAC/3ph/0~2
Web: compressor /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

After-sales Service: 24/7 Service Support
Warranty: Unit 1 Year, Air End 2 Years
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Customization:
Available

|

air compressor

What Industries Commonly Use Screw Compressors?

Screw compressors are widely used in various industries due to their efficiency, reliability, and versatility. Here’s a detailed overview of the industries that commonly utilize screw compressors:

  • 1. Manufacturing: Screw compressors find extensive use in manufacturing industries such as automotive, aerospace, electronics, and appliances. They are employed for applications such as powering pneumatic tools, operating production lines, providing compressed air for painting, and controlling automated processes.
  • 2. Oil and Gas: The oil and gas industry extensively utilizes screw compressors for various purposes. They are employed in upstream operations for natural gas gathering, gas lift systems, and wellhead compression. In downstream operations, screw compressors are used in refining processes, gas transmission, and storage facilities.
  • 3. Chemical and Petrochemical: Screw compressors play a crucial role in chemical and petrochemical industries. They are used for compressing gases in chemical reactions, providing instrument air for control systems, powering pneumatic conveying systems, and handling various process gases in refining and production processes.
  • 4. Food and Beverage: Screw compressors are employed in the food and beverage industry for applications such as refrigeration, freezing, and air supply for packaging processes. They help maintain optimal temperature and humidity conditions, ensuring the quality and safety of food and beverage products.
  • 5. Pharmaceutical and Healthcare: Screw compressors are utilized in pharmaceutical manufacturing facilities, research laboratories, and healthcare institutions. They provide clean, oil-free compressed air for critical processes, such as pharmaceutical production, medical device manufacturing, and laboratory analysis. High-quality compressed air is essential to meet stringent quality and regulatory standards in these industries.
  • 6. Power Generation: Screw compressors find applications in power generation facilities, including gas turbine power plants, combined heat and power (CHP) systems, and cogeneration plants. They are used for inlet air compression, fuel gas boosting, and other compressed air requirements in power generation processes.
  • 7. Construction and Mining: Screw compressors are widely used in construction and mining industries for powering pneumatic tools, drilling equipment, and material handling systems. They provide the necessary compressed air for efficient and reliable operation in demanding construction and mining environments.
  • 8. Municipal and Wastewater Treatment: Screw compressors are utilized in municipal water treatment and wastewater treatment plants. They play a vital role in aeration processes, where compressed air is introduced into water or wastewater to promote biological treatment and ensure effective removal of contaminants.
  • 9. Printing and Packaging: Screw compressors are employed in printing and packaging industries for applications such as air drying, air cushioning, and powering pneumatic systems in printing presses and packaging machinery. They ensure consistent and reliable compressed air supply for efficient production processes.
  • 10. Automotive and Transportation: Screw compressors are used in automotive and transportation industries for applications such as air conditioning systems in vehicles, pneumatic braking systems, and compressed air supply for tire inflation and maintenance.

These are just a few examples, and screw compressors find applications in numerous other industries, including textiles, plastics, pulp and paper, steel and metal fabrication, electronics manufacturing, and more. The versatility and reliability of screw compressors make them a popular choice across a wide range of industrial sectors.

air compressor

How Do Screw Compressors Contribute to Energy Savings?

Screw compressors offer several features and advantages that contribute to energy savings. Here’s a detailed explanation:

1. Efficient Compression Process:

Screw compressors are known for their efficiency in compressing air or gas. They use a unique rotary screw design, where two intermeshing screws rotate to compress the air. This design provides continuous and smooth compression, resulting in less energy loss compared to other compression technologies, such as reciprocating compressors. The efficient compression process of screw compressors helps reduce energy consumption.

2. Load and Unload Operation:

Screw compressors often incorporate load and unload operation, also known as capacity control. This feature allows the compressor to match its output to the actual demand for compressed air. During periods of lower demand, the compressor unloads by disengaging some of its capacity. This reduces power consumption since the compressor is not operating at full load continuously. By adjusting the compressor’s output to match the required air flow, load and unload operation helps save energy.

3. Variable Speed Drive (VSD) Technology:

Many screw compressors are equipped with Variable Speed Drive (VSD) technology. A VSD allows the compressor’s motor speed to be adjusted according to the demand for compressed air. By running the compressor at lower speeds during periods of lower demand, the energy consumption can be significantly reduced. The VSD technology enables precise control over the compressor’s output, resulting in energy savings and improved efficiency.

4. Air Leakage Reduction:

A common source of energy loss in compressed air systems is air leakage. Screw compressors are designed to minimize air leakage through improved sealing mechanisms and enhanced construction materials. By reducing air leakage, the compressor can operate more efficiently, as less energy is wasted in compressing air that escapes before reaching the intended point of use. Regular maintenance and monitoring practices help identify and address air leakage issues, further contributing to energy savings.

5. Integrated Energy Recovery:

In certain applications, screw compressors can be configured to recover and utilize the heat generated during the compression process. This recovered heat can be used for various purposes, such as space heating, preheating process air or water, or powering other thermal processes. By utilizing the recovered heat energy, screw compressors enhance overall energy efficiency and reduce the need for additional heating systems.

6. System Optimization and Controls:

Screw compressors often feature advanced control systems that optimize their operation for energy efficiency. These control systems monitor various parameters, such as system pressure, air demand, and temperature, and adjust the compressor’s operation accordingly. By continuously analyzing the system requirements and making intelligent adjustments, the control systems help minimize energy waste and maintain optimal performance.

7. Maintenance and Proper Operation:

Regular maintenance and proper operation of screw compressors are essential for maximizing energy savings. Routine maintenance activities, such as cleaning air filters, checking lubrication levels, and inspecting and repairing leaks, ensure the compressor operates at peak efficiency. Additionally, proper operation practices, such as avoiding excessive idling or overloading, contribute to energy savings and prolong the compressor’s lifespan.

In summary, screw compressors contribute to energy savings through their efficient compression process, load and unload operation, variable speed drive technology, air leakage reduction, integrated energy recovery, system optimization, and proper maintenance and operation. By utilizing these features and implementing energy-conscious practices, industries can significantly reduce energy consumption and lower operating costs in compressed air systems.

air compressor

What Are the Advantages of Using a Screw Compressor?

Using a screw compressor offers several advantages in various applications. Here’s a detailed explanation:

High Efficiency:

Screw compressors are known for their high efficiency in converting electrical power into compressed air or gas. The rotary positive displacement design of screw compressors allows them to deliver a large volume of compressed air or gas with minimal energy loss. This high efficiency results in cost savings and reduced energy consumption compared to other types of compressors.

Continuous Operation:

One of the key advantages of screw compressors is their ability to provide a continuous flow of compressed air or gas. The interlocking helical rotors ensure a smooth and continuous compression process without pulsations. This feature is particularly beneficial in applications that require a steady and reliable source of compressed air, such as in manufacturing plants and industrial processes.

Compact Design:

Screw compressors are known for their compact design, which allows for space-saving installation. They have a relatively small footprint compared to other types of compressors, making them suitable for applications where space is limited. The compact design also facilitates ease of installation and integration into existing systems.

Low Vibration and Noise Levels:

Screw compressors are designed to operate with low vibration levels, resulting in smooth and quiet operation. The interlocking rotors and balanced design help in minimizing vibrations, reducing the need for additional vibration isolation measures. The low noise levels make screw compressors suitable for applications where noise reduction is important, such as in office environments or noise-sensitive industrial settings.

Wide Range of Capacities:

Screw compressors are available in a wide range of capacities, allowing for flexibility in meeting different compressed air or gas requirements. Whether it’s a small-scale application or a large industrial process, there are screw compressors available to match the specific capacity needs. This versatility makes screw compressors suitable for a variety of industries and applications.

Oil-Injected and Oil-Free Options:

Screw compressors are offered in both oil-injected and oil-free variants, providing options to meet different application requirements. Oil-injected screw compressors use lubricating oil for cooling, sealing, and reducing friction between the rotors. They are commonly used in industrial applications where a small amount of oil in the compressed air is acceptable. Oil-free screw compressors, on the other hand, eliminate the need for oil and provide contaminant-free compressed air. They are preferred in industries such as food and beverage, pharmaceuticals, and electronics, where oil-free air is critical.

Overall, using a screw compressor offers advantages such as high efficiency, continuous operation, compact design, low vibration and noise levels, capacity flexibility, and options for oil-injected or oil-free operation. These benefits make screw compressors a popular choice in various industries for a wide range of applications.

China Hot selling Permanent Magnet Synchronous Motor (PMSM) Variable Frequency Converter Drive Pm VSD Inverter Direct Driven Double Screw Air Compressor with Affordable Price   with Best SalesChina Hot selling Permanent Magnet Synchronous Motor (PMSM) Variable Frequency Converter Drive Pm VSD Inverter Direct Driven Double Screw Air Compressor with Affordable Price   with Best Sales
editor by CX 2024-03-27

China wholesaler Permanent Magnet Synchronous Motor (PMSM) Variable Frequency Converter Drive Pm VSD Inverter Direct Driven Double Screw Air Compressor with Affordable Price air compressor price

Product Description

Industrial AC Power Permanent Magnet Synchronous Motor (PMSM) Variable Frequency Converter Drive Pm VSD Inverter Direct Coupled Screw Air Compressor Advantage 

1. DENAIR PMSM(Permanent Magnet Synchronous Motor) VSD air compressor reduces the energy consumption by a staggering 50% on average.
 
2.Best-in-class screw element with longer male rotor, high volumetric efficiency
 
3.Permanent magnetic electric motor, no bearing, no lubricant and no maintenance, 100% transmission
 
4.Intelligent touch screen control panel, checking air compressor status more conveniently, monitor total power consumption, setting start and stop time of air compressor 
 
5.Unique design for inverter, perfect protection from short phase, phase short circuit, ground short circuit, over current, overvoltage, under voltage, overload, overheating, motor thermal protections etc.

Technical Parameters Of Variable Frequency Air Compressor with PMSM Motor

Model Maximum working pressure Capacity(FAD) Installed
motor power
IP Grade Noise level Dimensions
(mm)
Weight Air outlet
pipe diameter
Starting
Method
EEI
bar(g) psig m3/min cfm kw hp L*W*H kg
DAV-5 7.5  109 0.45-0.89 15.80-31.59 5.5 7.5 IP65 75 900*660*960 315 G3/4″ Direct Driven
Air
Cooling
EEI1
8.5  123 0.44-0.88 15.61-31.22
10.5  152 0.38-0.76 13.38-26.76
DAV-7 7.5  109 0.59-1.19 21.00-42.00 7.5 10 IP65 75 900*660*960 315 G3/4″
8.5  123 0.58-1.17 20.63-41.26
10.5  152 0.51-1.01 17.84-35.68
DAV-11 7.5  109 0.90-1.80 31.78-63.56 11 15 IP65 75 900*660*960 324 G3/4″
8.5  123 0.89-1.79 31.59-63.19
10.5  152 0.81-1.61 28.43-56.87
13.0  189 0.68-1.37 24.16-48.32
DAV-15 7.5  109 1.22-2.43 42.93-85.86 15 20 IP65 75 1465*990*1345 453 G1-1/4″
8.5  123 1.18-2.37 41.81-83.63
10.5  152 1.05-2.09 36.98-73.97
13.0  189 0.96-1.92 33.82-67.65
DAV-18 7.5  109 1.55-3.09 54.64-109.28 18.5 25 IP65 75 1465*990*1345 453 G1-1/4″
8.5  123 1.51-3.01 53.15-106.30
10.5  152 1.34-2.68 47.39-94.78
13.0  189 1.08-2.16 38.10-76.20
DAV-22 7.5  109 1.82-3.64 64.30-128.60 22 30 IP65 75 1465*990*1345 477 G1-1/4″
8.5  123 1.81-3.62 63.93-127.86
10.5  152 1.67-3.35 59.10-118.20
13.0  189 1.32-2.63 46.46-92.92
DAV-30 7.5  109 2.63-5.26 92.92-185.84 30 40 IP65 78 1600*1250*1550 682 G1-1/2″
8.5  123 2.62-5.24 92.55-185.10
10.5  152 2.36-4.72 83.26-166.51
13.0  189 2.09-4.18 73.78-147.56
DAV-37 7.5  109 3.44-6.87 121.35-242.71 37 50 IP65 78 1600*1250*1550 728 G1-1/2″
8.5  123 3.43-6.85 120.98-241.97
10.5  152 2.95-5.89 104.07-208.14
13.0  189 2.40-4.80 84.74-169.49
DAV-45 7.5  109 4.01-8.01 141.43-282.85 45 60 IP65 78 1600*1250*1550 728 G1-1/2″
8.5  123 3.99-7.98 140.87-281.74
10.5  152 3.63-7.25 128.05-256.09
13.0  189 3.15-6.29 111.13-222.27
DAV-55 7.5  109 5.14-10.28 181.57-363.14 55 75 IP54 80 1800*1200*1400 1310 G2″
8.5  123 5.10-10.20 180.08-360.16
10.5  152 4.83-9.66 170.60-341.21
13.0  189 3.94-7.87 139.01-278.02
DAV-75 7.5  109 6.48-12.97 228.96-457.91 75 100 IP54 80 1800*1200*1400 1325 G2
8.5  123 6.44-12.87 227.28-454.57
10.5  152 5.71-11.42 201.64-403.28
13.0  189 4.68-9.37 165.40-330.80
*) FAD in accordance with ISO 1217:2009, Annex C: Ansolute intake pressure 1 bar (a), cooling and air intake temperature 20ºC
**) Nosie level as per ISO 2151 and the basic standard ISO 9614-2, operation at maximum operating pressure and maximum speed; tolerance:±3 dB(A)
Specifications are subject to change without prior notice

We carefully selected for you the classic case


14 sets of VSD air compressor for 40HQ are ready for packing and delivering to CHINAMFG distributor in Buenos Aires, Argentina. The compressors are high-end customized for Argentina market with Germany MANN filters, France SCHNEIDER inverter, Belgium CMC controller, etc. 

DENAIR Factory

DENAIR Customers

DENAIR Exhibition

DENAIR Certificae

DENAIR Packing

FAQ

Q1: Are you factory or trade company?  
A1: We are factory.

Q2: What the exactly address of your factory? 
A2:   No. 366, YangzhuangBang Street, Pingxing Rd., Xindai Town, HangZhou, ZHangZhoug Province, China

Q3: Warranty terms of your machine? 
A3: Two years warranty for the machine and technical support according to your needs.

Q4: Will you provide some spare parts of the Air Compressors? 
A4: Yes, of course.

Q5: How long will you take to arrange production? 
A5: 380V 50HZ we can delivery the goods within 10 days. Other electricity or other color we will delivery within 22 days

Q6: Can you accept OEM orders? 
A6: Yes, with professional design team, OEM orders are highly welcome. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Lubrication Style: Lubricated or Oil-Less
Cooling System: Air Cooling/Water Cooling
Power Source: AC Power
Customization:
Available

|

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Shipping Cost:

Estimated freight per unit.







about shipping cost and estimated delivery time.
Payment Method:







 

Initial Payment



Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

air compressor

What Safety Precautions Should Be Taken When Operating Screw Compressors?

When operating screw compressors, it is important to follow specific safety precautions to ensure the well-being of personnel and prevent potential accidents. Here’s a detailed explanation:

1. Familiarize Yourself with the Equipment:

  • Before operating a screw compressor, thoroughly read and understand the manufacturer’s instructions, safety guidelines, and operating procedures. Familiarize yourself with the specific features, controls, and safety devices of the compressor.

2. Wear Appropriate Personal Protective Equipment (PPE):

  • Wear the necessary PPE, such as safety glasses, hearing protection, gloves, and appropriate clothing, when operating the compressor. PPE helps protect against potential hazards, including flying debris, noise, and contact with hot or moving parts.

3. Ensure Proper Ventilation:

  • Operate the screw compressor in a well-ventilated area to prevent the buildup of potentially harmful gases or fumes. Ensure that the compressor’s intake and exhaust vents are not obstructed, allowing for adequate airflow.

4. Compressor Location:

  • Position the compressor on a stable and level surface to prevent tipping or instability during operation. Ensure that the compressor is located away from flammable materials, heat sources, or sources of ignition.

5. Electrical Safety:

  • Follow electrical safety guidelines and ensure that the compressor is properly grounded. Avoid using damaged or frayed electrical cords and ensure that the electrical connections are secure.

6. Lockout/Tagout Procedures:

  • Before performing any maintenance or repair tasks on the compressor, follow lockout/tagout procedures to isolate electrical power and prevent accidental startup. Lockout/tagout procedures help protect against unexpected energization of the compressor or its components.

7. Pressure Relief:

  • Before performing any maintenance tasks or opening the compressor, ensure that all pressure has been relieved from the system. Follow proper procedures for depressurizing the compressor and associated piping to avoid sudden releases of pressure.

8. Hot Surfaces:

  • Be cautious of hot surfaces, such as compressor casings, piping, or discharge components. Allow sufficient cooling time before touching or performing maintenance tasks on hot surfaces to avoid burns.

9. Maintenance and Inspection:

  • Adhere to the manufacturer’s recommended maintenance schedule and perform regular inspections of the compressor. Replace any worn or damaged components promptly to prevent potential hazards or malfunctions.

10. Emergency Procedures:

  • Be familiar with emergency procedures, including how to shut down the compressor in case of an emergency, how to respond to leaks or spills, and how to handle fire or electrical incidents. Have emergency contact information readily available.

11. Training and Qualified Personnel:

  • Ensure that operators and maintenance personnel are adequately trained in the safe operation and maintenance of screw compressors. Only allow qualified personnel to perform maintenance or repair tasks.

It is essential to consult the specific safety guidelines provided by the manufacturer of the screw compressor as they may include additional precautions or recommendations.

In summary, when operating screw compressors, it is important to familiarize yourself with the equipment, wear appropriate PPE, ensure proper ventilation, follow electrical safety measures, implement lockout/tagout procedures, be cautious of hot surfaces, perform regular maintenance and inspections, and be prepared with emergency procedures. By following these safety precautions, the risk of accidents or injuries can be minimized, ensuring a safe working environment when operating screw compressors.

air compressor

How Do You Troubleshoot Common Issues with Screw Compressors?

Troubleshooting common issues with screw compressors involves a systematic approach to identify and resolve problems that may arise during operation. Here’s a detailed explanation:

1. Gather Information:

  • Start by gathering information about the symptoms and any recent changes or events related to the compressor. This can help pinpoint potential causes and guide the troubleshooting process.

2. Check Power and Controls:

  • Ensure that the compressor has a power supply and that all electrical connections are secure. Check for any tripped breakers or blown fuses. Verify that the compressor’s controls, such as pressure switches, temperature sensors, and safety devices, are functioning correctly.

3. Inspect for Leaks:

  • Check for any visible leaks in the compressed air system, including connections, fittings, hoses, and seals. Leaks can cause a drop in system pressure and affect the compressor’s performance. Repair or replace any damaged components.

4. Monitor Pressure and Temperature:

  • Monitor the discharge pressure and temperature of the compressor. Abnormal readings can indicate issues such as inadequate lubrication, high discharge temperatures, or problems with the cooling system. Refer to the manufacturer’s specifications for acceptable pressure and temperature ranges.

5. Verify Lubrication:

  • Ensure that the compressor’s lubrication system is functioning correctly. Check oil levels and the condition of the lubricant. Inadequate lubrication can lead to increased friction, overheating, and damage to internal components. Follow the manufacturer’s recommendations for lubricant type and change intervals.

6. Check Air Filters and Cooling System:

  • Inspect and clean or replace the air filters to ensure proper airflow. Clogged filters can reduce efficiency and increase the compressor’s operating temperature. Additionally, check the cooling system, including fans and heat exchangers, to ensure they are clean and functioning correctly.

7. Examine Vibration and Noise:

  • Pay attention to any unusual vibration or noise coming from the compressor. Excessive vibration may indicate misalignment, worn bearings, or loose components. Unusual noise can be a sign of mechanical issues or problems with the intake or discharge system.

8. Review Maintenance Records:

  • Review the compressor’s maintenance records to ensure that regular maintenance tasks, such as oil changes, filter replacements, and inspections, have been performed according to the manufacturer’s recommendations. Address any overdue or missed maintenance tasks.

9. Consult Manufacturer Documentation:

  • Refer to the compressor’s operating manual and troubleshooting guide provided by the manufacturer. These documents often contain specific troubleshooting steps for common issues and can provide valuable insights.

10. Seek Professional Assistance:

  • If the troubleshooting steps do not resolve the issue or if you are unsure about performing further diagnostics, it is recommended to seek assistance from a qualified technician or contact the compressor manufacturer’s technical support.

Remember to prioritize safety throughout the troubleshooting process, following appropriate lockout/tagout procedures and wearing the necessary personal protective equipment.

In summary, troubleshooting common issues with screw compressors involves checking power and controls, inspecting for leaks, monitoring pressure and temperature, verifying lubrication, checking air filters and cooling systems, examining vibration and noise, reviewing maintenance records, consulting manufacturer documentation, and seeking professional assistance when needed. By following a systematic approach, it is possible to identify and resolve common problems with screw compressors, ensuring their proper operation and performance.

air compressor

What Are the Advantages of Using a Screw Compressor?

Using a screw compressor offers several advantages in various applications. Here’s a detailed explanation:

High Efficiency:

Screw compressors are known for their high efficiency in converting electrical power into compressed air or gas. The rotary positive displacement design of screw compressors allows them to deliver a large volume of compressed air or gas with minimal energy loss. This high efficiency results in cost savings and reduced energy consumption compared to other types of compressors.

Continuous Operation:

One of the key advantages of screw compressors is their ability to provide a continuous flow of compressed air or gas. The interlocking helical rotors ensure a smooth and continuous compression process without pulsations. This feature is particularly beneficial in applications that require a steady and reliable source of compressed air, such as in manufacturing plants and industrial processes.

Compact Design:

Screw compressors are known for their compact design, which allows for space-saving installation. They have a relatively small footprint compared to other types of compressors, making them suitable for applications where space is limited. The compact design also facilitates ease of installation and integration into existing systems.

Low Vibration and Noise Levels:

Screw compressors are designed to operate with low vibration levels, resulting in smooth and quiet operation. The interlocking rotors and balanced design help in minimizing vibrations, reducing the need for additional vibration isolation measures. The low noise levels make screw compressors suitable for applications where noise reduction is important, such as in office environments or noise-sensitive industrial settings.

Wide Range of Capacities:

Screw compressors are available in a wide range of capacities, allowing for flexibility in meeting different compressed air or gas requirements. Whether it’s a small-scale application or a large industrial process, there are screw compressors available to match the specific capacity needs. This versatility makes screw compressors suitable for a variety of industries and applications.

Oil-Injected and Oil-Free Options:

Screw compressors are offered in both oil-injected and oil-free variants, providing options to meet different application requirements. Oil-injected screw compressors use lubricating oil for cooling, sealing, and reducing friction between the rotors. They are commonly used in industrial applications where a small amount of oil in the compressed air is acceptable. Oil-free screw compressors, on the other hand, eliminate the need for oil and provide contaminant-free compressed air. They are preferred in industries such as food and beverage, pharmaceuticals, and electronics, where oil-free air is critical.

Overall, using a screw compressor offers advantages such as high efficiency, continuous operation, compact design, low vibration and noise levels, capacity flexibility, and options for oil-injected or oil-free operation. These benefits make screw compressors a popular choice in various industries for a wide range of applications.

China wholesaler Permanent Magnet Synchronous Motor (PMSM) Variable Frequency Converter Drive Pm VSD Inverter Direct Driven Double Screw Air Compressor with Affordable Price   air compressor priceChina wholesaler Permanent Magnet Synchronous Motor (PMSM) Variable Frequency Converter Drive Pm VSD Inverter Direct Driven Double Screw Air Compressor with Affordable Price   air compressor price
editor by CX 2024-03-27

China Custom Oil Free Variable Speed Drive 18kw 43.7-86.2cfm 7bar Compressor for CHINAMFG Zt 18VSD-10 Compressor VSD Series Screw Air Compressor air compressor portable

Product Description

We are authorized distributer of atlas copco, we could provide whole product line of
Atlas Copco air compressors , spare parts and consumables. we are also
certified supplier by international authoritative certification
organizations.

Kindly advise your technical requirements, we will recommend suitable
compressed air system and spare parts for you .

We can provide CHINAMFG One-Stop Service,and efficient energy – saving solutions for you .

 

Related compressor spare parts:
 

Air Compressor Daily Consumables Air/oil/pipeline Filter,Oil Separator,Lubricant.
Air Compressor Electrial Components Pressure/temprature sensor,Differential pressure Sensor,pressure/temp.switch.
Air Compressor Preventive Maintenance Kit Min.pressure Kit,Oil stop kit,Check Valve Kit,Unloading Valve kit,Safety valve kit and so on.
Air compressor Motor Main Motor,Fan Motor.
Air Compressor Spare parts hose,o-ring,oil level guage,shaft,gear wheel,display,diaphragm,coupling.
Air Compressor rotor for Atlas Copco,Ingersoll Rand,Sullair,CompAir,Fusheng,Quincy,Chicago Pneumatic.
Air Compressor Cooler After Cooler,Oil Cooler.

Products Description

Industrial equipment, printing service, pipelines,power plants, oil&gas, oil refinery, coating, painting,
plastics, steel industry, rubber, mechanical, blow molding, color sorter machine, shipyard, sandblasting, 
metallurg,etc.

Different industries correspond to different air compressors, kindly please send me your application
areas and specific conditions, then will recommend the most suitable products for you .

 Shipping
We can provide CHINAMFG standard packaging or OEM packaging.


1 Q: How about  the quality of products ?

    A: We are authorized distributer of Atlas Copco. Don’t worry the quality and service.

2 Q: How long is your  delivery lead time ?

    A: If there is stock, the lead time is about 3 working days after we get the payment, if need to
       be produced, it depends.

3 Q: How about your overseas after-sale service?

    A: (1)Provide customers with intallation and commissioning online instructions.

       (2)Worldwide agents and sfter service available.

4 Q: Can you accept OEM&ODM orders?

    A: Yes, we have professional design team, OEM&ODM orders are highly welcomed.

  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Warranty: 1 Year
Lubrication Style: Oil-free
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Structure Type: Closed Type
Customization:
Available

|

air compressor

How Does Variable Speed Control Work in Screw Compressors?

Variable speed control in screw compressors is a technology that allows the compressor’s rotational speed to be adjusted according to the compressed air or gas demand. This control method offers several benefits in terms of energy efficiency and system performance. Here’s a detailed explanation:

Variable speed control, also known as variable frequency drive (VFD) or inverter control, works by adjusting the speed of the compressor’s drive motor. The drive motor is typically an electric motor that powers the rotation of the compressor’s screw rotors.

The key components and operation of variable speed control in screw compressors are as follows:

  • 1. Drive Motor: The drive motor is connected to the compressor’s screw rotors and provides the rotational power required for compression. It is an electric motor capable of operating at variable speeds.
  • 2. Inverter or Variable Frequency Drive (VFD): The inverter or VFD is an electronic device that controls the speed of the drive motor. It converts the incoming electrical power into adjustable frequency and voltage, allowing precise control of the motor’s rotational speed.
  • 3. Control System: The control system of the screw compressor monitors and adjusts the speed of the drive motor based on the compressed air or gas demand. It receives input signals from sensors that measure parameters such as pressure, flow rate, or system demand, and sends corresponding signals to the inverter or VFD to regulate the motor speed.
  • 4. Speed Adjustment: When the demand for compressed air or gas decreases, the control system reduces the motor speed by decreasing the frequency and voltage supplied by the inverter or VFD. This results in a lower rotational speed of the screw rotors, reducing the compression capacity and power consumption of the compressor.
  • 5. Energy Efficiency: Variable speed control allows the compressor to match the output to the actual demand, avoiding energy wastage associated with constant-speed compressors. By operating at lower speeds during periods of lower demand, energy consumption can be significantly reduced. This energy-saving capability is particularly advantageous in applications with varying air or gas requirements.
  • 6. Smooth Operation: Variable speed control enables smooth and gradual motor acceleration and deceleration, minimizing mechanical stress on the compressor components and reducing the likelihood of sudden pressure surges or system shutdowns.
  • 7. System Stability: By adjusting the compressor’s speed to match the demand, variable speed control helps maintain stable system pressure and prevents excessive cycling of the compressor. This contributes to improved system performance and longevity.

It’s worth noting that variable speed control is more commonly found in larger screw compressors used in industrial and commercial applications. Smaller screw compressors may utilize fixed-speed motors due to cost considerations or simpler system requirements.

Overall, variable speed control in screw compressors offers precise capacity modulation, improved energy efficiency, enhanced system stability, and reduced maintenance requirements, making it a preferred choice in many applications where compressed air or gas demand fluctuates.

air compressor

Can Screw Compressors Be Used in Food Processing?

Yes, screw compressors can be used in food processing. Here’s a detailed explanation:

Screw compressors are widely employed in various industrial applications, including the food processing industry. They provide a reliable and efficient source of compressed air, which is used for a range of purposes in food processing facilities. Here are some key points to consider:

1. Packaging: Screw compressors are commonly used in food packaging processes. Compressed air is utilized for tasks such as operating pneumatic actuators, controlling packaging machinery, and inflating packaging materials, such as bags and containers.

2. Cleaning and Drying: Compressed air is essential for cleaning and drying applications in the food industry. Screw compressors supply the necessary air pressure for tasks such as blowing off debris, dust, or moisture from food products, packaging surfaces, and production equipment.

3. Pneumatic Conveying: Screw compressors play a crucial role in pneumatic conveying systems used for transporting food products, such as grains, powders, or granules. Compressed air is utilized to create the necessary airflow to move the food materials through pipes or tubes to different processing stages or storage areas.

4. Cooling and Freezing: In food processing, screw compressors are often employed in refrigeration and cooling systems. They provide compressed air for various cooling processes, such as air chilling, blast freezing, or cryogenic freezing, which help maintain the freshness and quality of perishable food products.

5. Air Control and Mixing: Compressed air is utilized for precise air control and mixing applications in food processing. It can be used to control the flow rate, pressure, and temperature of air in mixing processes, such as dough mixing or batter preparation.

6. Cleaning-In-Place (CIP) Systems: CIP systems are widely used in the food industry to clean and sanitize equipment and pipelines. Compressed air is often an integral part of these systems, assisting in the removal of residues and ensuring proper cleaning and hygiene practices.

When using screw compressors in food processing, it is important to consider specific requirements and regulations related to food safety and quality. Here are some key considerations:

a) Food-Grade Lubricants: Ensure that the screw compressor is compatible with food-grade lubricants. Lubricants used in the compressor should be safe for incidental contact with food products and compliant with applicable food safety regulations.

b) Air Purity: Depending on the application, the compressed air may need to meet specific air quality standards to prevent contamination of food products. Standards such as ISO 8573, which define air purity classes for different contaminants, can be referenced to determine the required level of air purity.

c) Maintenance and Cleaning: Implement proper maintenance and cleaning procedures for the screw compressor to prevent any potential contamination risks. Regular inspection, cleaning, and adherence to good manufacturing practices (GMP) are essential to ensure food safety and compliance.

d) Regulatory Compliance: Comply with relevant food safety regulations and guidelines, such as those established by the Food and Drug Administration (FDA) or local regulatory authorities. These regulations may cover various aspects, including equipment design, materials, cleanliness, and hygiene practices.

In summary, screw compressors can be used in food processing for tasks such as packaging, cleaning, pneumatic conveying, cooling, and mixing. However, it is important to consider food safety regulations, use food-grade lubricants, maintain air quality, and follow proper maintenance and cleaning procedures to ensure compliance and protect the integrity of food products.

air compressor

Can Screw Compressors Be Used in Industrial Applications?

Yes, screw compressors are widely used in industrial applications and are well-suited for various industrial processes. Here’s a detailed explanation:

1. Manufacturing and Assembly:

Screw compressors find extensive use in manufacturing and assembly processes. They provide a reliable source of compressed air for powering pneumatic tools, such as drills, impact wrenches, and spray guns. Compressed air is also used for operating pneumatic cylinders and valves, facilitating automation and control in industrial production lines.

2. Industrial Automation:

In industrial automation systems, screw compressors play a crucial role in providing compressed air for actuating control valves, operating robotic arms, and powering pneumatic actuators. The continuous and reliable supply of compressed air from screw compressors ensures the smooth operation of automated machinery and equipment.

3. HVAC Systems:

Screw compressors are commonly used in large-scale heating, ventilation, and air conditioning (HVAC) systems. They are employed in chillers, which cool water or air for air conditioning and refrigeration purposes. Screw compressors in HVAC systems offer high energy efficiency, making them cost-effective and environmentally friendly options for large commercial and industrial buildings.

4. Food and Beverage Industry:

The food and beverage industry relies on screw compressors for various applications. They are used for providing compressed air in food processing and packaging operations, such as pneumatic conveying, filling, labeling, and sealing. Screw compressors used in this industry are often of the oil-free type to ensure air purity and prevent contamination of food products.

5. Pharmaceuticals and Healthcare:

In the pharmaceutical and healthcare sectors, screw compressors are vital for critical applications. They provide clean and oil-free compressed air required for pharmaceutical manufacturing processes, including tablet coating, fermentation, lyophilization, and cleanroom operations. Screw compressors with strict air quality standards, such as oil-free and contaminant-free options, are commonly used in these industries.

6. Energy and Power Generation:

Screw compressors play a significant role in energy and power generation facilities. They are used for processes such as gas compression, pneumatic conveying of coal and biomass, and control air supply in power plants. Screw compressors in these applications are designed to handle high pressures and large volumes of gas.

7. Mining and Construction:

In mining and construction industries, screw compressors are employed for various tasks. They power pneumatic tools and equipment used in drilling, rock blasting, material handling, and construction activities. Screw compressors are valued for their reliability, continuous operation, and ability to withstand harsh operating conditions.

8. Oil and Gas Industry:

The oil and gas industry extensively uses screw compressors for gas compression and processing. Screw compressors are employed in natural gas pipelines, gas processing plants, and refineries. They handle the compression of gases, such as natural gas, hydrogen, and process gases, ensuring efficient transportation and refining operations.

These are just a few examples of the industrial applications where screw compressors are commonly used. Their high efficiency, continuous operation, compact design, and capacity flexibility make them well-suited for a wide range of industrial processes and systems.

China Custom Oil Free Variable Speed Drive 18kw 43.7-86.2cfm 7bar Compressor for CHINAMFG Zt 18VSD-10 Compressor VSD Series Screw Air Compressor   air compressor portableChina Custom Oil Free Variable Speed Drive 18kw 43.7-86.2cfm 7bar Compressor for CHINAMFG Zt 18VSD-10 Compressor VSD Series Screw Air Compressor   air compressor portable
editor by CX 2024-03-05

China high quality 250kw Variable Speed Drive Mute AC Two Stage Rotary Screw Oil Free Dry Air Compressor air compressor oil

Product Description

      

   Specification
  Model Capacitiy (FAD)M3/min Power kw Noise level db Weight KG
7bar 8.5bar 10bar Water Cooling Air Cooling
OFA1 OFA15 2.4 2.1 1.8 15 74   1,030
OFA22 3.7 3.2 2.7 22 74   1,070
OFA30 4.8 4.4 4.0 30 74   1,300
OFA37 5.9 5.3 5.0 37 74   1,355
OFA45 7.0 6.5 6.1 45 74   1,390
OFA2 OFA55 9.2 7.9 7.3 55 74   1,860
OFA75 12.2 11.2 10.7 75 74   1,935
OFA90 14.7 13.5 12.7 90 74   2,000
OFA3 OFA110 19.3 17.2 16.0 110 74   3,660
OFA132 22.9 19.5 18.8 132 74   3,700
OFA4 OFA160 29.4 25.7 23.8 160 74   5,300
OFA200 36.6 33.1 30.4 200 74   5,380
OFA250 44.5 41.0 37.4 250 74   5,450
OFA275 47.4 43.0 41.0 275 74   5,500
OFA5 OFA315 51.5 47.6 46.0 315 74   6,000
OFA355 56.3 52.6 50.4 355 74   9,050
OFW1 OFW37 5.9 5.3 5.0 37 74 1,355  
OFW45 7.0 6.5 6.1 45 74 1,450  
OFW2 OFW55 8.8 7.9 7.3 55 74 1,800  
OFW75 11.9 11.2 10.7 75 74 1,850  
OFW90 14.3 13.5 12.7 90 74 1,925  
OFW3 OFW110 19.1 17.1 16.0 110 74 2,635  
OFW132 21.9 19.6 18.9 132 74 2,760  
OFW4 OFW160 28.3 26.1 24.2 160 74 3,850  
OFW200 36.1 33.1 30.4 200 74 4,000  
OFW250 43.1 41.0 37.0 250 74 4,100  
OFW275 46.4 43.0 41.0 275 74 4,300  
OFW5 OFW315 50.9 47.6 46.0 315 74 6,550  
OFW355 56.3 52.6 50.4 355 74 6,950  
OFW400 62.1 57.8 55.8 400 74 7,050  
OFW450 76.5 71.5 63.8 450 74 8,400  
OFW500 83.9 78.3 73.1 500 74 8,400  
OFW630 102.9 95.7 89.0 630 74 9,125  
OFW750 122.8 109.6 101.8 750 74 9,225  

                                             Company Profile

ZheJiang Napu compressor Technology Co.,LTD was established in 2012  based in ZheJiang ,specializing in oil-free rotary screw air compressors, offering a wide range of products from airends to compressors . 
       With over 10 years experience in oil free screw air compressor. NAPU Compressor is compliant with ISO 8573-1, Class 0 standard and audited by TUV Rheinland and China National Quality Inspection Center of Compressor and Refrigerator.   
        The company is also compliant with ISO 9001:14001 and is CHINAMFG in the domestic market for its quality-driven culture. The oil-free compressors manufactured by the company are used in a variety of sectors including some of our valued clients like CASC-China Aerospace Science Corporation, NORINCO-China North Industries Group, CNNC-China National Nuclear Group, CHANG AN AUTO, SINOPHARM, BYD and CALT and Sino-Chemical etc.
         Continuous improvement in productivity and efficiency is our goal, and we continue to offer an extensive services including our own branded oil-free compressor package as well as after-sales services for other leading brands.

 

                                              Product Features

1. In house designed airend
2. 100% oil free air certified by Germany TUV.
3. Double-layer structure to reduce he noise.
4. Air Cooling and Water cooling are available.
5. VSD control are available.
6.Touch Screen PLC with preset running schedule, more intelligent control.
7.OEM&ODM service are accepted

 

                                                         FAQ

Q1. Are you trading company or manufacture ?
A: We are professional manufacture of oil free air compressors. More than 20 years of experience in air compressor manufacturing.
 
Q2. What’s payment term ?
A: T/T, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.
 
Q3. How about your after-sales service ?
A: 1.We can provide customers with installation and commissioning online instructions.
   
Q4. How about your warranty?
A: One year for the whole machine and 5 years for screw air end, except consumable spare parts.
 
Q5. Do you have any certificate ?
A: Yes, we can offer CE ,ISO  and certificate as clients’ demande.
 
 
Q6. How do you control quality ?
A: 1. The raw materials are strictly inspected
    2. Each compressor must pass at least 8 hours of continuous testing before leaving the factory.
  
Q7.How long could your air compressor be used?
A: Usually, more than over 10 years.

      
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After-sales Service: Online Support
Warranty: 12 Months
Lubrication Style: Oil-free
Cooling System: Water Cooling
Power Source: AC Power
Cylinder Position: Horizontal
Customization:
Available

|

air compressor

What Is the Role of Oil in Lubricated Screw Compressors?

In lubricated screw compressors, oil plays a crucial role in ensuring optimal performance, reliability, and longevity of the compressor. Here’s a detailed explanation of the role of oil in lubricated screw compressors:

Lubrication: One of the primary functions of oil in screw compressors is to provide lubrication to the moving parts, particularly the screw rotors. The oil forms a thin film between the rotors and the compressor housing, reducing friction and wear. This lubrication minimizes mechanical losses and helps maintain efficient operation by reducing energy consumption.

Sealing: Oil also acts as a sealing medium in lubricated screw compressors. The oil film created between the rotors and the compressor housing helps create a seal, preventing air or gas leakage between the high-pressure and low-pressure sides of the compressor. This sealing action is crucial for maintaining the compressors’ efficiency and preventing losses in compression performance.

Cooling: Oil plays a vital role in cooling various components of the screw compressor. As the compressed air or gas is compressed, it generates heat. The oil absorbs a significant amount of this heat and carries it away from the compression chamber. The oil then circulates through the compressor’s oil cooling system, where it dissipates the heat to the surrounding environment or through an oil cooler. Efficient oil cooling helps prevent overheating of the compressor components, ensuring reliable operation and extending the compressor’s lifespan.

Cleaning: The oil in lubricated screw compressors acts as a cleaning agent. It carries away contaminants, such as dirt, dust, and metal particles, that may enter the compressor during operation. The oil passes through filters and separators, removing these impurities and preventing them from accumulating in the compressor’s internal components. Clean oil helps maintain the integrity of the compressor’s internal parts and reduces the risk of damage or malfunctions.

Sealing Element Lubrication: In some lubricated screw compressors, the oil also serves to lubricate the sealing elements, such as the shaft seals or labyrinth seals. Proper lubrication of these seals helps maintain their effectiveness in preventing oil leakage and maintaining the separation between the oil and the compressed air or gas.

Corrosion Protection: Oil in screw compressors often contains additives that provide corrosion protection to the internal components. These additives form a protective layer on the metal surfaces, preventing corrosion caused by moisture or contaminants present in the compressed air or gas. Corrosion prevention helps maintain the compressor’s performance, efficiency, and reliability over time.

It’s important to note that lubricated screw compressors require regular oil monitoring, oil analysis, and oil changes to ensure optimal performance. The oil level, quality, and viscosity should be regularly checked and maintained within the manufacturer’s recommended specifications.

In summary, oil in lubricated screw compressors serves crucial functions such as lubrication, sealing, cooling, cleaning, sealing element lubrication, and corrosion protection. These functions collectively contribute to the efficient and reliable operation of the compressor, extending its service life and minimizing maintenance requirements.

air compressor

How Do Screw Compressors Contribute to Energy Savings?

Screw compressors offer several features and advantages that contribute to energy savings. Here’s a detailed explanation:

1. Efficient Compression Process:

Screw compressors are known for their efficiency in compressing air or gas. They use a unique rotary screw design, where two intermeshing screws rotate to compress the air. This design provides continuous and smooth compression, resulting in less energy loss compared to other compression technologies, such as reciprocating compressors. The efficient compression process of screw compressors helps reduce energy consumption.

2. Load and Unload Operation:

Screw compressors often incorporate load and unload operation, also known as capacity control. This feature allows the compressor to match its output to the actual demand for compressed air. During periods of lower demand, the compressor unloads by disengaging some of its capacity. This reduces power consumption since the compressor is not operating at full load continuously. By adjusting the compressor’s output to match the required air flow, load and unload operation helps save energy.

3. Variable Speed Drive (VSD) Technology:

Many screw compressors are equipped with Variable Speed Drive (VSD) technology. A VSD allows the compressor’s motor speed to be adjusted according to the demand for compressed air. By running the compressor at lower speeds during periods of lower demand, the energy consumption can be significantly reduced. The VSD technology enables precise control over the compressor’s output, resulting in energy savings and improved efficiency.

4. Air Leakage Reduction:

A common source of energy loss in compressed air systems is air leakage. Screw compressors are designed to minimize air leakage through improved sealing mechanisms and enhanced construction materials. By reducing air leakage, the compressor can operate more efficiently, as less energy is wasted in compressing air that escapes before reaching the intended point of use. Regular maintenance and monitoring practices help identify and address air leakage issues, further contributing to energy savings.

5. Integrated Energy Recovery:

In certain applications, screw compressors can be configured to recover and utilize the heat generated during the compression process. This recovered heat can be used for various purposes, such as space heating, preheating process air or water, or powering other thermal processes. By utilizing the recovered heat energy, screw compressors enhance overall energy efficiency and reduce the need for additional heating systems.

6. System Optimization and Controls:

Screw compressors often feature advanced control systems that optimize their operation for energy efficiency. These control systems monitor various parameters, such as system pressure, air demand, and temperature, and adjust the compressor’s operation accordingly. By continuously analyzing the system requirements and making intelligent adjustments, the control systems help minimize energy waste and maintain optimal performance.

7. Maintenance and Proper Operation:

Regular maintenance and proper operation of screw compressors are essential for maximizing energy savings. Routine maintenance activities, such as cleaning air filters, checking lubrication levels, and inspecting and repairing leaks, ensure the compressor operates at peak efficiency. Additionally, proper operation practices, such as avoiding excessive idling or overloading, contribute to energy savings and prolong the compressor’s lifespan.

In summary, screw compressors contribute to energy savings through their efficient compression process, load and unload operation, variable speed drive technology, air leakage reduction, integrated energy recovery, system optimization, and proper maintenance and operation. By utilizing these features and implementing energy-conscious practices, industries can significantly reduce energy consumption and lower operating costs in compressed air systems.

air compressor

What Are the Advantages of Using a Screw Compressor?

Using a screw compressor offers several advantages in various applications. Here’s a detailed explanation:

High Efficiency:

Screw compressors are known for their high efficiency in converting electrical power into compressed air or gas. The rotary positive displacement design of screw compressors allows them to deliver a large volume of compressed air or gas with minimal energy loss. This high efficiency results in cost savings and reduced energy consumption compared to other types of compressors.

Continuous Operation:

One of the key advantages of screw compressors is their ability to provide a continuous flow of compressed air or gas. The interlocking helical rotors ensure a smooth and continuous compression process without pulsations. This feature is particularly beneficial in applications that require a steady and reliable source of compressed air, such as in manufacturing plants and industrial processes.

Compact Design:

Screw compressors are known for their compact design, which allows for space-saving installation. They have a relatively small footprint compared to other types of compressors, making them suitable for applications where space is limited. The compact design also facilitates ease of installation and integration into existing systems.

Low Vibration and Noise Levels:

Screw compressors are designed to operate with low vibration levels, resulting in smooth and quiet operation. The interlocking rotors and balanced design help in minimizing vibrations, reducing the need for additional vibration isolation measures. The low noise levels make screw compressors suitable for applications where noise reduction is important, such as in office environments or noise-sensitive industrial settings.

Wide Range of Capacities:

Screw compressors are available in a wide range of capacities, allowing for flexibility in meeting different compressed air or gas requirements. Whether it’s a small-scale application or a large industrial process, there are screw compressors available to match the specific capacity needs. This versatility makes screw compressors suitable for a variety of industries and applications.

Oil-Injected and Oil-Free Options:

Screw compressors are offered in both oil-injected and oil-free variants, providing options to meet different application requirements. Oil-injected screw compressors use lubricating oil for cooling, sealing, and reducing friction between the rotors. They are commonly used in industrial applications where a small amount of oil in the compressed air is acceptable. Oil-free screw compressors, on the other hand, eliminate the need for oil and provide contaminant-free compressed air. They are preferred in industries such as food and beverage, pharmaceuticals, and electronics, where oil-free air is critical.

Overall, using a screw compressor offers advantages such as high efficiency, continuous operation, compact design, low vibration and noise levels, capacity flexibility, and options for oil-injected or oil-free operation. These benefits make screw compressors a popular choice in various industries for a wide range of applications.

China high quality 250kw Variable Speed Drive Mute AC Two Stage Rotary Screw Oil Free Dry Air Compressor   air compressor oilChina high quality 250kw Variable Speed Drive Mute AC Two Stage Rotary Screw Oil Free Dry Air Compressor   air compressor oil
editor by CX 2024-02-17

China Standard Direct Drive 45 Kw Shanghai Screw Type Compressor Manufacturer portable air compressor

Product Description

 

ZIQI CHINAMFG Screw Air Compressor Advantages:

A.80% components of CHINAMFG Compressor adopt global well known reliable brand to make sure the air compressor with high quality,durable,energy saving:
1.Core part:Germany GHH RAND screw air end ;
2.Motor:adopt Brazil WEG brand,the second biggest motor manufacturer in the world,IE4 energy saving standard 3 phase induction motor,IP55 protection;
3.Italian EURE oil air vessel ,the lead pressure vessel manufacturer in the world;
4.Italian Manuli oil tube ;
5.French Schneider electric system;
6.Sweden CHINAMFG bearings

Energy saving:
The air compressor equiped the frequency inverter,to make the air compressor with variable speed drive [VSD].The principle of VSD is to adjust the motor rotation speed automatically according to the actual air consumption. The reduced system pressure decreases the total energy consumption of the whole system, which can reduce energy costs by 35% or more.

Technical Parameter

Model Air pressure Max air displacement  Motor power transmission dimension Weight Noise Outlet
cooling type
mpa bar(e)  psi(g)  m3/min  cfm  hp  kw  belt drive 
&
air cooling
L(mm) W(mm) H(mm) Kgs dB(A) mm
GA-3.7A 0.7 7 102 0.55 19 5 3.7  680  660  780  220 60±2  20
0.8 8 116 0.45 16
1 10 145 0.35 12
GA-5.5A 0.7 7 102 0.8 28 7 5.5 680 660 780 230 61±2 20
0.8 8 116 0.7 25
1 10 145 0.6 21
1.3 13 189 0.5 18
GAS-7.5A VFC 0.7 7 102 1.3 46 10 7.5 950 650 915 270 62±2 20
0.8 8 116 1.2 42
1 10 145 1.1 39
1.3 13 189 0.9 32
GAS-11A VFC 0.7 7 102 1.8 64 15 11 950 650 915 280 63±2 20
0.8 8 116 1.7 60
1 10 145 1.5 53
1.3 13 189 1.2 42
GAS-15A VFC 0.7 7 102 2.7 95 20 15 1260 850 1220 540 66±2 25
0.8 8 116 2.5 88
1 10 145 2.3 81
1.3 13 189 2 71
GAS-18.5A VFC 0.7 7 102 3.2 113 25 18.5 1260 850 1220 550 67±2 25
0.8 8 116 3 106
1 10 145 2.8 99
1.3 13 189 2.4 85
GAS-22A VFC 0.7 7 102 3.8 134 30 22 1260 850 1220 560 67±2 25
0.8 8 116 3.6 127
1 10 145 3.2 113
1.3 13 189 2.8 99
GAS-30A VFC 0.7 7 102 5.7 201 40 30 1500 970 1375 780 67±2 40
0.8 8 116 5.5 194
1 10 145 5 177
1.3 13 189 4.5 159
GAS-37A VFC 0.7 7 102 6.8 240 50 37 1500 970 1375 800 68±2 40
0.8 8 116 6.31 222
1 10 145 5.7 201
1.3 13 189 5 177
GAS-45A VFC 0.7 7 102 7.9 279 60 45 1500 970 1375 820 69±2 40
0.8 8 116 7.4 261
1 10 145 6.9 244
1.3 13 189 6.1 215
GAS-55A VFC 0.7 7 102 10.9 385 75 55 direct drive &air cooling or water cooling 2150 1326 1766 1550 69±2 50
0.8 8 116 10.4 367
1 10 145 9.4 332
1.3 13 189 8.6 304
GAS-75A VFC 0.7 7 102 14.5 512 100 75 2150 1326 1766 1600 70±2 50
0.8 8 116 13.8 487
1 10 145 12.6 445
1.3 13 189 11.2 395
GAS-90A VFC 0.7 7 102 17 600 120 90 2545 1450 1900 2500 75±2 65
0.8 8 116 16.5 583
1 10 145 15.2 537
1.3 13 189 14 494

*For other requirements,please contact the salesman.

Company Information

Packaging & Shipping

FAQ

 

Are you manufacturer?
ZIQI: Yes,we are professional air compressor manufacturer over 10 years and our factory located in ZheJiang .
How long is your air compressor warranty?
ZIQI: For 1 year.
Do you provide After- sales service parts?
ZIQI: Of course, We could provide easy- consumable spares.
How long could your air compressor be used?
ZIQI: Generally, more than 10 years.
How about your price?
ZIQI: Based on high quality, Our price is very competitive in this market all over the world.
How about your customer service?
ZIQI: For email, we could reply our customers’ emails within 2 hours.
Do you support OEM?
ZIQI: YES, and we also provide multiple models to select.

How to get quicker quotation?

When you send us inquiry, please confirm below information at the same time:
* What is the air displacement (m3/min,cfm/min)?
* What is the air pressure (mpa,bar,psi)?
* What is the voltage in your factory (v/p/Hz)?
* It is ok if you need air tank, air dryer and filters.
This information is helpful for us to check suitable equipment solution and quotation quickly.

 

 

After-sales Service: Online Technical Support
Warranty: 2 Years
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Customization:
Available

|

air compressor

How Do Gas Air Compressors Compare to Diesel Air Compressors?

When comparing gas air compressors to diesel air compressors, there are several factors to consider, including fuel efficiency, power output, cost, maintenance requirements, and environmental impact. Here’s a detailed explanation of how these two types of air compressors compare:

1. Fuel Efficiency:

Diesel air compressors are generally more fuel-efficient compared to gas air compressors. Diesel engines have higher energy density and better overall efficiency than gasoline engines. This means that diesel compressors can produce more work output per unit of fuel consumed, resulting in lower fuel costs and longer runtimes between refueling.

2. Power Output:

Diesel air compressors typically provide higher power output compared to gas air compressors. Diesel engines are known for their robustness and ability to generate higher torque, making them suitable for heavy-duty applications that require a larger volume of compressed air or higher operating pressures.

3. Cost:

In terms of upfront cost, gas air compressors are generally more affordable compared to diesel air compressors. Gasoline engines and components are typically less expensive than their diesel counterparts. However, it’s important to consider long-term costs, including fuel expenses and maintenance, which can vary depending on factors such as fuel prices and usage patterns.

4. Maintenance Requirements:

Diesel air compressors often require more regular maintenance compared to gas air compressors. This is because diesel engines have additional components such as fuel filters, water separators, and injector systems that need periodic servicing. Gas air compressors, on the other hand, may have simpler maintenance requirements, resulting in reduced maintenance costs and time.

5. Environmental Impact:

When it comes to environmental impact, diesel air compressors produce higher emissions compared to gas air compressors. Diesel engines emit more particulate matter, nitrogen oxides (NOx), and carbon dioxide (CO2) compared to gasoline engines. Gas air compressors, especially those powered by propane, tend to have lower emissions and are considered more environmentally friendly.

6. Portability and Mobility:

Gas air compressors are generally more portable and easier to move compared to diesel air compressors. Gasoline engines are typically lighter and more compact, making gas air compressors suitable for applications where mobility is essential, such as construction sites or remote locations.

It’s important to note that the specific requirements of the application and the availability of fuel sources also play a significant role in choosing between gas air compressors and diesel air compressors. Each type has its own advantages and considerations, and the choice should be based on factors such as the intended usage, operating conditions, budget, and environmental considerations.

In conclusion, gas air compressors are often more affordable, portable, and suitable for lighter applications, while diesel air compressors offer higher power output, fuel efficiency, and durability for heavy-duty operations. Consider the specific needs and factors mentioned above to determine the most appropriate choice for your particular application.

air compressor

Can Gas Air Compressors Be Used for Pneumatic Tools?

Yes, gas air compressors can be used for pneumatic tools. Here’s a detailed explanation:

1. Versatile Power Source:

Gas air compressors, powered by gasoline or diesel engines, provide a portable and versatile power source for operating pneumatic tools. They eliminate the need for electrical power supply, making them suitable for remote locations or construction sites where electricity may not be readily available.

2. High Power Output:

Gas air compressors typically offer higher power output compared to electric compressors of similar size. This high power output enables gas compressors to deliver the necessary air pressure and volume required by pneumatic tools, ensuring optimal tool performance.

3. Mobility and Portability:

Gas air compressors are often designed with mobility and portability in mind. They are compact and equipped with wheels or handles, allowing for easy transportation to different job sites. This mobility is advantageous when using pneumatic tools in various locations or when working in confined spaces.

4. Continuous Operation:

Gas air compressors can provide continuous air supply for pneumatic tools without the need for frequent pauses or recharging. As long as there is an adequate fuel supply, gas compressors can operate for extended periods, allowing uninterrupted use of pneumatic tools for tasks such as drilling, nailing, sanding, or painting.

5. Suitable for High-Demand Applications:

Pneumatic tools used in heavy-duty applications often require a robust air supply to meet their performance requirements. Gas air compressors can generate higher air flow rates and maintain higher operating pressures, making them suitable for high-demand pneumatic tools like jackhammers, impact wrenches, or sandblasters.

6. Flexibility in Compressor Size:

Gas air compressors are available in various sizes and capacities, allowing users to choose the compressor that best matches the air demands of their pneumatic tools. From small portable compressors for light-duty tasks to larger industrial-grade compressors for heavy-duty applications, there is a wide range of options to suit different tool requirements.

7. Reduced Dependency on Electrical Infrastructure:

Using gas air compressors for pneumatic tools reduces reliance on electrical infrastructure. In situations where the electrical power supply is limited, unreliable, or expensive, gas compressors offer a viable alternative, ensuring consistent tool performance without concerns about power availability.

It’s important to note that gas air compressors emit exhaust gases during operation, so proper ventilation is necessary when using them in enclosed spaces to ensure the safety of workers.

In summary, gas air compressors can effectively power pneumatic tools, offering mobility, high power output, continuous operation, and suitability for various applications. They provide a reliable and portable solution for utilizing pneumatic tools in locations where electrical power supply may be limited or unavailable.

air compressor

Can Gas Air Compressors Be Used in Remote Locations?

Yes, gas air compressors are well-suited for use in remote locations where access to electricity may be limited or unavailable. Their portability and reliance on gas engines make them an ideal choice for providing a reliable source of compressed air in such environments. Here’s a detailed explanation of how gas air compressors can be used in remote locations:

1. Independence from Electrical Grid:

Gas air compressors do not require a direct connection to the electrical grid, unlike electric air compressors. This independence from the electrical grid allows gas air compressors to be used in remote locations, such as wilderness areas, remote job sites, or off-grid locations, where it may be impractical or cost-prohibitive to establish electrical infrastructure.

2. Mobility and Portability:

Gas air compressors are designed to be portable and easy to transport. They are often equipped with handles, wheels, or trailers, making them suitable for remote locations. The gas engine powering the compressor provides mobility, allowing the compressor to be moved to different areas within the remote location as needed.

3. Fuel Versatility:

Gas air compressors can be fueled by various types of combustible gases, including gasoline, diesel, natural gas, or propane. This fuel versatility ensures that gas air compressors can adapt to the available fuel sources in remote locations. For example, if gasoline or diesel is readily available, the gas air compressor can be fueled with these fuels. Similarly, if natural gas or propane is accessible, the compressor can be configured to run on these gases.

4. On-Site Power Generation:

In remote locations where electricity is limited, gas air compressors can serve as on-site power generators. They can power not only the compressor itself but also other equipment or tools that require electricity for operation. This versatility makes gas air compressors useful for a wide range of applications in remote locations, such as powering lights, tools, communication devices, or small appliances.

5. Off-Grid Operations:

Gas air compressors enable off-grid operations, allowing tasks and activities to be carried out in remote locations without relying on external power sources. This is particularly valuable in industries such as mining, oil and gas exploration, forestry, or construction, where operations may take place in remote and isolated areas. Gas air compressors provide the necessary compressed air for pneumatic tools, drilling equipment, and other machinery required for these operations.

6. Emergency Preparedness:

Gas air compressors are also beneficial for emergency preparedness in remote locations. In situations where natural disasters or emergencies disrupt the power supply, gas air compressors can provide a reliable source of compressed air for essential equipment and systems. They can power emergency lighting, communication devices, medical equipment, or backup generators, ensuring operational continuity in critical situations.

7. Adaptability to Challenging Environments:

Gas air compressors are designed to withstand various environmental conditions, including extreme temperatures, humidity, dust, and vibrations. This adaptability to challenging environments makes them suitable for use in remote locations, where environmental conditions may be harsh or unpredictable.

Overall, gas air compressors can be effectively used in remote locations due to their independence from the electrical grid, mobility, fuel versatility, on-site power generation capabilities, suitability for off-grid operations, emergency preparedness, and adaptability to challenging environments. These compressors provide a reliable source of compressed air, enabling a wide range of applications in remote settings.

China Standard Direct Drive 45 Kw Shanghai Screw Type Compressor Manufacturer   portable air compressorChina Standard Direct Drive 45 Kw Shanghai Screw Type Compressor Manufacturer   portable air compressor
editor by CX 2023-11-20

China wholesaler 250kw Variable Speed Drive High Efficiency Silent Industrial Screw Rotary Oil Free Dry Two Stage Air Compressor air compressor for car

Product Description

      

   Specification(VSD series)
  Model Capacity M3/min Power kw Noise level db Weight KG
3.5~10bar Water Cooling  Air Cooling
OFA1VSD OFA15VSD 1.1-3.3 15 74   930
OFA22VSD 4.5-5.6 22 74   1150
OFA30VSD 4-6.6 30 74   1300
OFW37VSD 5-8.4 37 74   1600
OFW45VSD 6.1-11.1 45 74   1750
OFA2VSD OFA55VSD 7.3-9.4 55 74   1900
OFA75VSD 10.7-12.4 75 74   2630
OFA90VSD 12.7-15.4 90 74   2700
OFA3VSD OFA110VSD 16.0-19.5 110 74    
OFA132VSD 18.8-21.8 132 74   4300
OFA160VSD 24.0-29.6 160 74   4300
OFA4VSD OFA200VSD 12.2-36.6 200 74    
OFA250VSD 14.2-41.8 250 74   6950
OFA275VSD 15.8-47.4 275 74    
OFA315VSD 45.0-52.1 315 74   6950
OFA5VSD OFA355VSD 50.4-57.5 355 74    
OFW1VSD OFW37VSD 2-5.9 37 74    
OFW45VSD 2.3-7 45 74    
OFW2VSD OFW55VSD 4.5-8.8 55 74    
OFW75VSD 4.5-13.2 75 74 2170  
OFW90VSD 4.5-15.5 90 74 2220  
OFW3VSD OFW110VSD 6.4-19.1 110 74    
OFW132VSD 7.7-22.4 132 74 3500  
OFW160VSD 14.5-42.9 160 74 3500  
OFW4VSD OFW200VSD 18-36.1 200 74    
OFW250VSD 19.-38.4 250 74 6400  
OFW275VSD 20.0-41.0 275 74    
OFW315VSD 46.0-50.9 315 74 6650  
OFW5VSD OFW355VSD 50.4-56.3 355 74 6950  
OFW400VSD 55.8-62.1 400 74 7060  
OFW450VSD 63.8-76.5 450 74 8400  
OFW500VSD 73.1-83.9 500 74 8400  
OFW630VSD 89.0-102.9 630 74 9125  
OFW750VSD 101.8-122.8 750 74 9225  

Company Profile

       ZheJiang Napu compressor Technology Co.,LTD was established in 2012  based in ZheJiang ,specializing in oil-free rotary screw air compressors, offering a wide range of products from airends to compressors . 
       With over 10 years experience in oil free screw air compressor. NAPU Compressor is compliant with ISO 8573-1, Class 0 standard and audited by TUV Rheinland and China National Quality Inspection Center of Compressor and Refrigerator.   
        The company is also compliant with ISO 9001:14001 and is CHINAMFG in the domestic market for its quality-driven culture. The oil-free compressors manufactured by the company are used in a variety of sectors including some of our valued clients like CASC-China Aerospace Science Corporation, NORINCO-China North Industries Group, CNNC-China National Nuclear Group, CHANG AN AUTO, SINOPHARM, BYD and CALT and Sino-Chemical etc.
         Continuous improvement in productivity and efficiency is our goal, and we continue to offer an extensive services including our own branded oil-free compressor package as well as after-sales services for other leading brands.

 

Product Features

1. In house designed airend
2. 100% oil free air certified by Germany TUV.
3. Double-layer structure to reduce he noise.
4. Air Cooling and Water cooling are available.
5. VSD control are available.
6.Touch Screen PLC with preset running schedule, more intelligent control.
7.OEM&ODM service are accepted

 

FAQ

Q1. Are you trading company or manufacture ?
A: We are professional manufacture of oil free air compressors. More than 20 years of experience in air compressor manufacturing.
 
Q2. What’s payment term ?
A: T/T, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.
 
Q3. How about your after-sales service ?
A: 1.We can provide customers with installation and commissioning online instructions.
   
Q4. How about your warranty?
A: One year for the whole machine and 5 years for screw air end, except consumable spare parts.
 
Q5. Do you have any certificate ?
A: Yes, we can offer CE ,ISO  and certificate as clients’ demande.
 
 
Q6. How do you control quality ?
A: 1. The raw materials are strictly inspected
    2. Each compressor must pass at least 8 hours of continuous testing before leaving the factory.
  
Q7.How long could your air compressor be used?
A: Usually, more than over 10 years.

After-sales Service: Online Support
Warranty: 12 Months
Lubrication Style: Oil-free
Cooling System: Water Cooling
Power Source: AC Power
Cylinder Position: Horizontal
Customization:
Available

|

air compressor

What Is the Lifespan of a Typical Screw Compressor?

The lifespan of a typical screw compressor can vary depending on several factors, including the quality of the equipment, maintenance practices, operating conditions, and usage patterns. Here’s a detailed explanation:

The lifespan of a screw compressor is typically measured in operating hours, which refers to the cumulative hours the compressor has been in operation. While it’s challenging to provide an exact lifespan, as it can vary significantly, screw compressors are generally designed to have a long service life, often ranging from 20,000 to 100,000 operating hours.

Several factors can influence the lifespan of a screw compressor:

  • 1. Quality of Construction: The quality of construction and materials used in the compressor’s manufacturing plays a crucial role in its lifespan. Compressors built with high-quality components and robust construction tend to have a longer service life compared to those with lower-quality materials.
  • 2. Maintenance Practices: Regular and proper maintenance is essential to extend the lifespan of a screw compressor. Following the manufacturer’s recommended maintenance schedule, including tasks such as oil changes, filter replacements, and inspection of critical components, helps ensure optimal performance and reliability. Neglecting maintenance can lead to premature wear and potential breakdowns.
  • 3. Operating Conditions: The operating conditions in which the compressor operates can impact its lifespan. Factors such as temperature, humidity, and the presence of contaminants in the ambient air can affect the compressor’s performance and longevity. Compressors operated in clean, well-ventilated environments with controlled temperature and humidity conditions tend to have longer lifespans.
  • 4. Load and Usage Patterns: The load and usage patterns of the compressor also influence its lifespan. Compressors operated at or near their maximum capacity for prolonged periods may experience higher wear and tear compared to those operated within their recommended operating range. Compressors subjected to frequent start-stop cycles or continuous operation may have different lifespans based on the stress placed on their components.
  • 5. Maintenance and Repairs: The response to maintenance and repair needs can impact the compressor’s lifespan. Timely addressing of maintenance issues and prompt repairs when faults or malfunctions occur can prevent further damage and help prolong the compressor’s lifespan.
  • 6. Manufacturer and Design: The reputation and expertise of the manufacturer play a role in determining the compressor’s lifespan. Established manufacturers with a track record of producing reliable and durable equipment often design their compressors to have longer lifespans. It’s advisable to choose compressors from reputable manufacturers known for their quality and reliability.

It’s important to note that while a screw compressor may have a designed lifespan, it doesn’t necessarily mean it will fail immediately after reaching that threshold. With proper maintenance and care, compressors can often exceed their expected lifespan. On the other hand, neglecting maintenance or subjecting the compressor to harsh operating conditions can shorten its lifespan.

Regular monitoring of the compressor’s performance, including parameters such as discharge temperature, vibration levels, and energy consumption, can help identify any potential issues and take corrective actions to maintain the compressor’s reliability and extend its lifespan.

In summary, the lifespan of a typical screw compressor can range from 20,000 to 100,000 operating hours, depending on factors such as the quality of construction, maintenance practices, operating conditions, usage patterns, and manufacturer reputation. Adhering to proper maintenance practices, operating the compressor within its recommended parameters, and choosing a reputable manufacturer can help ensure a longer lifespan for the screw compressor.

air compressor

Can Screw Compressors Be Used for Refrigeration?

Yes, screw compressors can be used for refrigeration applications. Here’s a detailed explanation:

Screw compressors are versatile and widely used in various industrial applications, including refrigeration. They are known for their efficiency, reliability, and ability to handle high-capacity refrigeration systems. Screw compressors work by compressing refrigerant gas, increasing its pressure and temperature, and then transferring the heat to the surrounding environment.

Here are some key points regarding the use of screw compressors in refrigeration:

1. Industrial Refrigeration Systems:

Screw compressors are commonly employed in large-scale industrial refrigeration systems, such as those used in cold storage facilities, food processing plants, beverage production, and HVAC systems for commercial buildings. These systems require high cooling capacities and continuous operation, making screw compressors an ideal choice.

2. Positive Displacement Compressors:

Screw compressors belong to the category of positive displacement compressors. They use two interlocking helical rotors (screws) to trap and compress the refrigerant gas. This design ensures a continuous flow of refrigerant and allows for efficient compression over a wide range of operating conditions.

3. Oil-Injected and Oil-Free Types:

Screw compressors can be either oil-injected or oil-free. Oil-injected screw compressors use oil for lubrication and cooling, which helps reduce friction and extend the compressor’s lifespan. In contrast, oil-free screw compressors use specialized coatings and materials to eliminate the need for oil, making them suitable for applications where oil contamination is a concern, such as in the pharmaceutical or food industries.

4. Multi-Stage Compression:

In refrigeration applications, screw compressors are often used in multi-stage configurations to achieve higher pressure ratios and improve overall system efficiency. Multi-stage compression involves compressing the refrigerant gas in multiple stages, typically with intermediate cooling between each stage, to reduce the work required for compression and enhance system performance.

5. Variable Speed Control:

Screw compressors can be equipped with variable speed drives (VSD) that allow for precise control of the compressor’s rotational speed. VSD technology enables the compressor to adjust its capacity according to the refrigeration load, resulting in energy savings and improved system performance.

6. System Integration:

Screw compressors are often integrated into complex refrigeration systems, working in tandem with other components such as condensers, evaporators, expansion valves, and control systems. This integration ensures efficient heat transfer, proper refrigerant flow, and effective temperature control.

It’s important to note that the selection of a screw compressor for refrigeration applications should consider factors such as cooling capacity requirements, operating conditions, refrigerant type, system configuration, and specific industry regulations.

In summary, screw compressors are well-suited for refrigeration applications, especially in industrial settings. Their efficiency, reliability, and capacity make them a popular choice for large-scale refrigeration systems. Whether in cold storage facilities, food processing plants, or HVAC systems, screw compressors play a crucial role in maintaining optimal temperatures and preserving perishable goods.

air compressor

How Does a Screw Compressor Work?

A screw compressor operates based on a unique rotary positive displacement principle. Here’s a detailed explanation:

Working Principle:

A screw compressor consists of two helical rotors, typically referred to as male and female rotors, that rotate in opposite directions within a housing. The rotors have specially designed profiles that interlock with each other, creating a series of compression chambers as they rotate. The compression chambers gradually reduce in volume as the rotors rotate, compressing the air or gas trapped inside.

Suction Process:

The suction process begins when the rotors start rotating. As they rotate, the helical lobes or threads on the rotors create expanding spaces between them. The expanding spaces draw in the air or gas from the inlet port, allowing it to enter the compression chamber. The suction process continues as the rotors rotate, and the expanding spaces move the air or gas towards the discharge side of the compressor.

Compression Process:

As the air or gas enters the compression chamber, it gets trapped between the interlocking lobes or threads of the rotors. As the rotors continue to rotate, the trapped air or gas is carried along the length of the rotors. The volume of the compression chamber gradually decreases as the lobes or threads of the rotors intermesh, compressing the air or gas. The compression process is continuous and smooth as the air or gas moves from the suction side to the discharge side of the compressor.

Discharge Process:

Once the air or gas reaches the discharge end of the compression chamber, it is pushed towards the outlet port. The compressed air or gas is then released from the compressor through the outlet port to be used for various applications.

Oil-Injected and Oil-Free Variants:

Screw compressors are available in both oil-injected and oil-free variants. In oil-injected screw compressors, a small amount of lubricating oil is injected into the compression chamber. The oil provides lubrication, cooling, and sealing between the rotors, reducing friction and minimizing wear. The oil-injected variant is commonly used in industrial applications where a small amount of oil in the compressed air is acceptable.

Oil-free screw compressors, on the other hand, are designed to operate without the need for oil lubrication. These compressors use specialized rotor coatings, such as PTFE (polytetrafluoroethylene) or other non-stick materials, to reduce friction and eliminate the need for oil. Oil-free screw compressors are preferred in applications that require oil-free and contaminant-free compressed air, such as in the food and beverage, pharmaceutical, and electronics industries.

In summary, a screw compressor works by utilizing interlocking helical rotors to compress air or gas. The rotating rotors draw in the air or gas during the suction process, and as they rotate, the trapped air or gas is compressed within the compression chamber. The compressed air or gas is then discharged from the compressor. Screw compressors are available in oil-injected and oil-free variants, catering to different application requirements.

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editor by CX 2023-11-03