Tag Archives: ac air compressor

China Standard in Discounts! 18kw Screw Air-Compressor 22kw 30HP Combined Integrated AC Screw Air Compressor with Air Dryer 37kw manufacturer

Product Description

Product Parameters

Detailed Photos

 

 

 

 

 

 

Company Profile

 

 

 

 

 

 

 

 

 

 

 

 

Pre-sales service

1.Recommend the most suitable air compressor with our 11 year experience in air compressor business according to your appication.

2.Welcome to your visit to our factory.

3.Recommend the trustable shipping agentfor your reference.

4.Help you check the shipping fee.

After-sales service

1.User manual will be sent to you.

2.Installation direction by phone.

3.Technician goes to your city to help you installation.

4.24-hour online after-sales support.

Q1: Why customer choose us?
A: Lang Air INDUSTRIAL (ZheJiang ) CO., LTD., with 18 years history, we are specialized in Rotary Screw Air Compressor USA Standard and 10 years exporting experience help us won more than 50 loyal foreign agents. We warmly welcome your small trial order for quality or market test.

Q2: Are you a manufacturer or trading company?
A: We are professional manufacturer with big modern factory in ZheJiang ,China. Both OEM & ODM service can be accepted.

Q3: What’s your delivery time?
A: Generally 3 to 7 days, if urgently order, please contact our sales in advance.

Q4: How long is your air compressor warranty?
A: One year for the whole machine and 2 years for screw air end, except consumble spare parts.

Q5: How long could your air compressor be used?
A: Generally, more than 10 years.

Q6: What’s payment term?
A: T/T, L/C, D/P, Western Union, Paypal , Credit Card, and etc.
Also we could accept Dollar, RMB, Euro and other currency.

Q7: How about your customer service?
A: 24 hours on-line service available. 48 hours problem solved promise.

Q8: How about your after-sales service?
A: 1. Provide customers with installation and commissioning online instructions.
2. Well-trained engineers available to overseas

 

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After-sales Service: Overseas Third-Party Support Available
Warranty: 2 Years
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC/DC Power
Cylinder Position: Horizontal
Customization:
Available

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air compressor

Are There Portable Screw Compressors Available?

Yes, portable screw compressors are available in the market to cater to various applications that require mobility and flexibility. Here’s a detailed explanation:

Portable screw compressors are compact and designed for easy transportation, allowing them to be used in different locations as needed. They offer the advantage of providing compressed air or gas on-site without the need for a fixed installation.

These compressors are typically designed with features that make them suitable for portable applications. Some key characteristics of portable screw compressors include:

  • 1. Compact and Lightweight Design: Portable screw compressors are designed to be lightweight and compact, making them easy to transport and maneuver. They are often mounted on wheels or skids for enhanced mobility.
  • 2. Durability and Robustness: Portable compressors are built to withstand the rigors of transportation and on-site use. They are constructed with sturdy materials and reinforced components to ensure durability in various working environments.
  • 3. Engine-Powered: Many portable screw compressors are powered by internal combustion engines, such as gasoline or diesel. This eliminates the need for a fixed power source, allowing them to be used in remote locations or areas without access to electricity.
  • 4. Integrated Controls and Safety Features: Portable compressors are equipped with user-friendly controls and safety features for easy operation and protection. These may include start/stop controls, pressure regulation systems, temperature monitoring, and safety shutdown mechanisms.
  • 5. Noise and Vibration Reduction: Portable screw compressors often incorporate noise and vibration reduction technologies to minimize their operational noise levels and vibrations. This helps maintain a comfortable and safe working environment.
  • 6. Versatility in Application: Portable screw compressors are designed to accommodate a wide range of applications. They can be used for construction projects, road repairs, mining operations, oil and gas exploration, emergency air supply, and other portable compressed air or gas requirements.

The capacity and performance of portable screw compressors can vary, ranging from smaller units suitable for light-duty tasks to larger compressors capable of delivering higher volumes and pressures for heavy-duty applications.

When selecting a portable screw compressor, it’s important to consider factors such as the required air or gas flow rate, operating pressure, power source availability, environmental conditions, and specific application needs. Consulting with manufacturers or suppliers can help in choosing the most suitable portable screw compressor for a particular use case.

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 Key Components of a Screw Compressor?

A screw compressor consists of several key components that work together to compress air or gas. Here’s a detailed explanation of these components:

1. Male and Female Rotors:

The male and female rotors are the primary components of a screw compressor. These helical rotors have specially designed profiles that interlock with each other. The male rotor typically has fewer lobes or threads compared to the female rotor. As the rotors rotate, the interlocking lobes create compression chambers that gradually reduce in volume, compressing the air or gas.

2. Compression Chamber:

The compression chamber is formed by the interlocking lobes of the rotors. It is the space where the air or gas is compressed as the rotors rotate. The volume of the compression chamber decreases as the lobes move towards the discharge end, resulting in the compression of the trapped air or gas.

3. Inlet and Outlet Ports:

The inlet port is the entry point through which the air or gas enters the screw compressor. It is typically located at the suction side of the compressor. The inlet port allows the air or gas to flow into the compression chamber during the suction process. The outlet port is the exit point through which the compressed air or gas is discharged from the compressor.

4. Drive System:

The drive system of a screw compressor consists of a motor and a drive mechanism. The motor provides the rotational power required to drive the rotors. Common types of drive mechanisms include direct drive, belt drive, and gear drive. The drive system ensures that the rotors rotate in opposite directions at the desired speed and synchronization.

5. Oil System (in oil-injected compressors):

In oil-injected screw compressors, an oil system is present to provide lubrication, cooling, and sealing between the rotors. The oil system typically includes an oil reservoir, an oil pump, oil filters, and oil coolers. The lubricating oil is injected into the compression chamber, where it forms a thin film on the rotors, reducing friction and minimizing wear.

6. Cooling System:

Screw compressors often incorporate a cooling system to maintain optimal operating temperatures. The cooling system may include air or water-cooled heat exchangers, which dissipate the heat generated during compression. Cooling ensures that the compressor operates within safe temperature limits, preventing overheating and prolonging the lifespan of the components.

7. Control System:

A control system is an essential component of a screw compressor, providing monitoring and regulation of various parameters. It may include sensors, controllers, and safety devices to measure and control variables such as pressure, temperature, and operating conditions. The control system ensures efficient and safe operation of the screw compressor.

8. Sound Attenuation and Vibration Isolation:

To reduce noise and vibration, screw compressors are often equipped with sound attenuation measures and vibration isolation systems. These components help in minimizing the noise and vibrations generated during operation, making the compressor suitable for noise-sensitive environments.

In summary, the key components of a screw compressor include the male and female rotors, compression chamber, inlet and outlet ports, drive system, oil system (in oil-injected compressors), cooling system, control system, and sound attenuation/vibration isolation components. These components work together to enable the efficient compression of air or gas in the screw compressor.

China Standard in Discounts! 18kw Screw Air-Compressor 22kw 30HP Combined Integrated AC Screw Air Compressor with Air Dryer 37kw   manufacturer China Standard in Discounts! 18kw Screw Air-Compressor 22kw 30HP Combined Integrated AC Screw Air Compressor with Air Dryer 37kw   manufacturer
editor by CX 2024-05-15

China Professional Kompresor Ajri Part Oil Piston Oilless Screw Silent Oil Free Portable Used Industrial Mini Dental Free Rotary AC Air Pump Compressor wholesaler

Product Description

Scope of application:
Using for Pushing Pneumatic Nail Gun, Air Screw , Spray Painting Gun to work, also use to miniature instrument, blowing dust, Air inflation for small car and so on.
Product  Feature:

  1. High Power, high efficiency, low energy, high reliability.
  2. Piston Ring: New ECO circle, low friction coefficient, Auto lubricating system.
  3. Cylinder Liner: Surface hardening, deplete hardness, Accelerate the heat transfer, long using time.
  4. Suction and exhaust valve: Using advanced foreign technology.
  5. Multiple Pressure: Overload protection

 

 

 

 

 

 Oilless Air Compressor Featuers:
1.Super Silent
Super low noise.The output air pressure is stable without fluctuations, reducing noise pollution.
   
     2. Safety
 
If the voltage or current cause the machine  overheat, it will automatically shut down to protect  from burnout.
 
    3. Automatic control

 Pressure switch automatically controls the start and stop of the machine.
   
   4. Adjustable air pressure
The air pressure can be adjusted to meet the needs of different equipment usage.

   5. Save human power
 
Switch on the air compressor can work normally & automatically. It is easy to operate and does not need human to be on duty.
 
 6. Easy maintenance
No need to add any lubricant, easy maintenance after purchase. 

Parts Features
1.Heavy cast iron body: heavy load, long stroke, low fuel consumption, low noise

2.Cylinder: made of high-grade cast iron, strength, good lubricity, wall by the fine honing, wear-resistant, durable

3.Piston ring: good elasticity, excellent wear resistance, low oil consumption, not easy to make the valve group carbon deposition and loss of oil to burn the crankshaft and connecting rod.

4.The crankshaft, connecting rod, piston: well balanced, wear resistance, high strength, smooth running balance.

5.High reliable and durable valve; strong aluminum alloy body, light and heat.

6.The motor provides reliable power, low voltage start up and running performance strong fan cooled motor and body; special shock proof design.

7.Double nozzles, were used to direct the exhaust and pressure exhaust; pressure switch with push button, safe and convenient

8.Oil free,silent,protect-environment,suitable for dental use.
 

Frequency Asked Question

1.Are you the manufacturer or trading company?
We are the manufacturer.

2.Where is your factory?
It is located in HangZhou City,ZHangZhoug Province,China.

3.What’s the terms of trade?
FOB,CFR,CIF or EXW are all acceptable.

4.What’s the terms of payment?
T/T,L/C at sight or cash.

5.What’s the lead time?

In 15 days on receipt of deposit .

6.Do you accept sample order?
Yes,we accept.

7.What about the cost of sample?
 You have to pay the freight charge.But the cost of product could be refundable,if you will purchase 1x20GP container in the future.

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Lubrication Style: Oil-free
Cooling System: Air Cooling
Cylinder Arrangement: Duplex Arrangement
Cylinder Position: Vertical
Structure Type: Open Type
Compress Level: Multistage
Samples:
US$ 330/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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air compressor

Can Screw Compressors Be Used for Air Conditioning?

Yes, screw compressors can be used for air conditioning applications, particularly in larger commercial and industrial HVAC systems. Here’s a detailed explanation:

Screw compressors are a type of positive displacement compressor that can effectively handle large volumes of gas or air. They are known for their high efficiency, reliability, and ability to provide continuous operation. These qualities make screw compressors well-suited for air conditioning systems that require the compression of refrigerant gases to facilitate cooling.

In air conditioning applications, screw compressors are commonly used in two types of systems:

  • 1. Chillers: Screw compressors are frequently employed in chiller systems, which are central air conditioning units that cool water or another secondary refrigerant. In chiller-based air conditioning systems, the screw compressor works in conjunction with other components such as evaporators, condensers, and expansion valves to extract heat from the chilled water or secondary refrigerant and provide cooling to the desired space.
  • 2. Variable Refrigerant Flow (VRF) Systems: VRF systems utilize multiple individual indoor units connected to a single outdoor unit. These systems can provide simultaneous heating and cooling to different zones within a building. In VRF systems, screw compressors are often used in the outdoor units to compress the refrigerant gas, which is then distributed to the indoor units for heat exchange and cooling.

The advantages of using screw compressors in air conditioning systems include:

  • 1. High Capacity: Screw compressors are capable of handling large volumes of gas or air, making them suitable for air conditioning applications that require high cooling capacities.
  • 2. Energy Efficiency: Screw compressors can deliver high energy efficiency, especially when equipped with variable speed drives (VSD) that allow the compressor to adjust its speed based on the cooling demand. This leads to energy savings and improved system performance.
  • 3. Reliability: Screw compressors are known for their reliability and durability, making them a suitable choice for air conditioning systems that require continuous operation and long service life.
  • 4. Smooth Operation: Screw compressors operate with minimal vibration and noise, contributing to a comfortable and quiet air conditioning environment.
  • 5. Control Flexibility: Screw compressors can offer control flexibility, allowing for efficient modulation of cooling capacity based on the cooling load. This enables precise temperature control and improves overall system performance.

It’s important to note that screw compressors used in air conditioning systems require proper installation, maintenance, and periodic inspections to ensure optimal performance and longevity. Regular maintenance tasks, such as checking refrigerant levels, cleaning filters, and inspecting compressor components, should be performed in accordance with the manufacturer’s recommendations.

In summary, screw compressors can be effectively used for air conditioning applications, particularly in larger commercial and industrial HVAC systems. Their high capacity, energy efficiency, reliability, smooth operation, and control flexibility make them well-suited for chiller and VRF systems. Proper installation, maintenance, and adherence to manufacturer guidelines are essential for optimal performance and longevity of screw compressors in air conditioning applications.

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

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 Professional Kompresor Ajri Part Oil Piston Oilless Screw Silent Oil Free Portable Used Industrial Mini Dental Free Rotary AC Air Pump Compressor   wholesaler China Professional Kompresor Ajri Part Oil Piston Oilless Screw Silent Oil Free Portable Used Industrial Mini Dental Free Rotary AC Air Pump Compressor   wholesaler
editor by CX 2024-05-14

China Hot selling All in One Compact AC Power 220V 380V 400V 415V 460V Quiet Electric 3 Phase Full Feature Screw Type Air Compressor with Tank 12v air compressor

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.

Model Air pressure Air flowing Motor power Dimension Weight
mpa bar(e) psi(g) m3/min cfm hp kw L(mm)*W(mm)*H(mm) Kgs
GA-3.7AL 0.7 7 102 0.55 19 5 3.7 1800mm*630mm*1450mm 360
0.8 8 116 0.45 16
1 10 145 0.35 12
GA-5.5AL 0.7 7 102 0.8 28 7 5.5 1800mm*630mm*1450mm 360
0.8 8 116 0.7 25
1 10 145 0.6 21
1.3 13 189 0.5 18
GA-7.5AL 0.7 7 102 1.3 46 10 7.5 1800mm*750mm*1600mm 520
0.8 8 116 1.2 42
1 10 145 1.1 39
1.3 13 189 0.9 32
GA-11AL 0.7 7 102 1.8 64 15 11 1800mm*750mm*1600mm 530
0.8 8 116 1.7 60
1 10 145 1.5 53
1.3 13 189 1.2 42
GA-15AL 0.7 7 102 2.7 95 20 15 2300mm*890mm*1725mm 850
0.8 8 116 2.5 88
1 10 145 2.3 81
1.3 13 189 2 71
GA-18.5AL 0.7 7 102 3.2 113 25 18.5 2300mm*890mm*1725mm 870
0.8 8 116 3 106
1 10 145 2.8 99
1.3 13 189 2.4 85
GA-22AL 0.7 7 102 3.8 134 30 22 2300mm*890mm*1725mm 890
0.8 8 116 3.6 127
1 10 145 3.2 113
1.3 13 189 2.8 99

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 sale produtions

 

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After-sales Service: Online Support
Warranty: 1 Year
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Customization:
Available

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air compressor

Can Gas Air Compressors Be Used for High-Pressure Applications?

Gas air compressors can be used for high-pressure applications, but there are certain considerations to keep in mind. Here’s a detailed explanation:

Gas air compressors are available in various sizes and configurations, and their suitability for high-pressure applications depends on factors such as the compressor’s design, power output, and the specific requirements of the application. Here are some key points to consider:

1. Compressor Design:

Not all gas air compressors are designed to handle high-pressure applications. Some compressors are specifically built for low-to-medium pressure ranges, while others are designed to deliver higher pressure outputs. It is important to select a gas air compressor model that is rated for the desired pressure range. The compressor’s specifications and manufacturer’s guidelines will provide information on the maximum pressure it can generate.

2. Power Output:

The power output of a gas air compressor is a crucial factor in determining its suitability for high-pressure applications. High-pressure compressors require more power to achieve and sustain the desired pressure levels. It is important to ensure that the gas air compressor has sufficient power output to meet the demands of the specific high-pressure application.

3. Cylinder Configuration:

The cylinder configuration of the gas air compressor can also affect its ability to handle high-pressure applications. Compressors with multiple cylinders or stages are designed to generate higher pressures compared to compressors with a single cylinder. Multi-stage compressors compress the air in multiple steps, allowing for higher pressure ratios.

4. Safety Considerations:

High-pressure applications require careful attention to safety considerations. Gas air compressors used for high-pressure applications should be equipped with appropriate safety features such as pressure relief valves, pressure gauges, and safety shut-off systems. It is crucial to follow all safety guidelines and regulations to ensure safe operation.

5. Maintenance and Inspection:

Regular maintenance and inspection are essential for gas air compressors used in high-pressure applications. High-pressure operation can put additional stress on the compressor components, and proper maintenance helps ensure optimal performance and safety. Regular inspections and adherence to maintenance schedules will help identify and address any potential issues before they become major problems.

6. Application-specific Considerations:

Each high-pressure application may have specific requirements and considerations. It is important to evaluate factors such as the required pressure level, duty cycle, flow rate, and any specific environmental conditions that may impact the performance of the gas air compressor. Consulting with the compressor manufacturer or a qualified professional can help determine the suitability of a gas air compressor for a particular high-pressure application.

In summary, gas air compressors can be used for high-pressure applications, provided that they are designed, rated, and configured appropriately. It is essential to consider factors such as compressor design, power output, safety features, maintenance requirements, and application-specific considerations to ensure safe and reliable operation at high pressures.

air compressor

Can Gas Air Compressors Be Used for Natural Gas Compression?

Gas air compressors are not typically used for natural gas compression. Here’s a detailed explanation:

1. Different Compressed Gases:

Gas air compressors are specifically designed to compress atmospheric air. They are not typically designed or suitable for compressing natural gas. Natural gas, which is primarily composed of methane, requires specialized compressors designed to handle the unique properties and characteristics of the gas.

2. Safety Considerations:

Natural gas compression involves handling a flammable and potentially hazardous substance. Compressing natural gas requires specialized equipment that meets stringent safety standards to prevent leaks, minimize the risk of ignition or explosion, and ensure the safe handling of the gas. Gas air compressors may not have the necessary safety features or materials to handle natural gas safely.

3. Equipment Compatibility:

Natural gas compression systems typically include components such as gas compressors, gas coolers, separators, and control systems that are specifically designed and engineered for the compression and handling of natural gas. These components are built to withstand the specific demands and conditions associated with natural gas compression, including the high pressures and potential presence of impurities.

4. Efficiency and Performance:

Compressing natural gas requires specialized compressors that can handle the high-pressure ratios and volumetric flow rates associated with the gas. Gas air compressors are generally not designed to achieve the same compression ratios and performance levels required for natural gas compression. Using gas air compressors for natural gas compression would likely result in inefficient operation and suboptimal performance.

5. Regulatory Compliance:

Compressing natural gas is subject to various regulations and standards to ensure safety, environmental protection, and compliance with industry guidelines. These regulations often dictate specific requirements for equipment, materials, and operating procedures in natural gas compression systems. Gas air compressors may not meet these regulatory requirements for natural gas compression.

6. Industry Standards and Practices:

The natural gas industry has well-established standards and best practices for equipment selection, installation, and operation in gas compression systems. These standards are based on the specific requirements and characteristics of natural gas. Gas air compressors do not align with these industry standards and practices, which are essential for safe and efficient natural gas compression.

In summary, gas air compressors are not suitable for natural gas compression. Natural gas compression requires specialized equipment designed to handle the unique properties and safety considerations associated with the gas. Compressors specifically engineered for natural gas compression offer the necessary performance, safety features, and regulatory compliance required for efficient and reliable operation in natural gas compression systems.

air compressor

What Industries Commonly Use Gas Air Compressors?

Gas air compressors find applications in various industries where compressed air is required for powering tools, equipment, and systems. These compressors are valued for their portability, versatility, and ability to provide high-pressure air. Here’s a detailed explanation of the industries that commonly use gas air compressors:

1. Construction Industry:

The construction industry extensively utilizes gas air compressors for a wide range of tasks. Compressed air is used to power pneumatic tools such as jackhammers, nail guns, impact wrenches, and concrete breakers. Gas air compressors provide the necessary airflow and pressure to operate these tools efficiently, making them ideal for construction sites.

2. Mining Industry:

In the mining industry, gas air compressors play a vital role in various operations. Compressed air is used to power pneumatic tools for drilling, rock blasting, and excavation. It is also employed in ventilation systems, conveying systems, and pneumatic control devices in mines. Gas air compressors are valued for their durability and ability to operate in rugged and remote mining environments.

3. Oil and Gas Industry:

The oil and gas industry relies on gas air compressors for numerous applications. They are used for well drilling operations, powering pneumatic tools, and maintaining pressure in oil and gas pipelines. Gas air compressors are also utilized in natural gas processing plants, refineries, and petrochemical facilities for various pneumatic processes and equipment.

4. Manufacturing and Industrial Sector:

In the manufacturing and industrial sector, gas air compressors are extensively used in different applications. They provide compressed air for pneumatic tools, such as air-powered drills, sanders, grinders, and spray guns. Compressed air is also used in manufacturing processes such as material handling, assembly line operations, and pneumatic control systems.

5. Automotive Industry:

The automotive industry utilizes gas air compressors for a variety of tasks. Compressed air is employed in automotive assembly plants for pneumatic tools, paint spraying booths, and pneumatic control systems. Gas air compressors are also used in auto repair shops for powering air tools, tire inflation, and operating pneumatic lifts.

6. Agriculture and Farming:

Gas air compressors have applications in the agriculture and farming sector. They are used for tasks such as powering pneumatic tools for crop irrigation, operating pneumatic seeders or planters, and providing compressed air for farm maintenance and repair work. Portable gas air compressors are particularly useful in agricultural settings where electricity may not be readily available.

7. Food and Beverage Industry:

In the food and beverage industry, gas air compressors are employed for various pneumatic processes and equipment. They are used in food packaging operations, pneumatic conveying systems for ingredients and finished products, and air-powered mixing and blending processes. Gas air compressors in this industry are designed to meet strict hygiene and safety standards.

8. Pharmaceutical and Healthcare Sector:

The pharmaceutical and healthcare sector utilizes gas air compressors for critical applications. Compressed air is used in medical devices, dental equipment, laboratory instruments, and pharmaceutical manufacturing processes. Gas air compressors in this industry must adhere to stringent quality standards and maintain air purity.

These are just a few examples of the industries that commonly use gas air compressors. Other sectors, such as power generation, aerospace, marine, and chemical industries, also rely on gas air compressors for specific applications. The versatility and reliability of gas air compressors make them indispensable in numerous industries where compressed air is a vital resource.

China Hot selling All in One Compact AC Power 220V 380V 400V 415V 460V Quiet Electric 3 Phase Full Feature Screw Type Air Compressor with Tank   12v air compressorChina Hot selling All in One Compact AC Power 220V 380V 400V 415V 460V Quiet Electric 3 Phase Full Feature Screw Type Air Compressor with Tank   12v air compressor
editor by CX 2024-05-13

China factory 2021 New Design Energy Save AC Power Oil Injected 90kw 0.7MPa Screw Air Compressor for Painting air compressor lowes

Product Description

2571 New Design Energy Save Ac Power Oil Injected 90kw 0.7mpa Screw Air Compressor for Painting

Before quotation:
1.Before quoting, what should users offer?
1).Discharge pressure (Bar, Mpa or Psi)
2).Air discharge/Air flow/Air capacity (m3/min or CFM)
3).Power supply (220/380V, 50/60Hz, 3Phase)

2.If I don’t know the pressure and air flow, what should I do?
1).Take the picture of nameplate, we will advise the suitable air compressor to you.
2).Tell us what industry you are, we can advise the suitable 1 (so as to air tank / air dryer / air filters).
 
High Efficiency PM Motor and Energy Saving
*With the high-performance permanent magnet material, PM motor won’t lose magnetism even under 120°c and can run for more than 15 years.
*No motor bearing: permanent magnet rotors is installed directly on the stretch out shaft of Male rotor. This structure doesn’t have the bearing and eliminates the motor bearing fault. 
*Comparing to normal variable speed motor, the permanent magnet synchronous motor performs with even better energy efficiency. Especially in the low-speed condition, it can still maintain a high motor efficiency.

SHIPPING
Delivery: time 5-25 working days after payment receipt confirmed(based on actual quantity)
packing:standard export packing. or customized packing as your
Professional: goods shipping forwarder.

FAQ
Q: OEM/ODM, or customers logo printed is available?
Yes, OEM/ODM, customers logo is welcomed.

Q:  Delivery date?
Usually 5-25 workdays after receiving deposit, specific delivery date based on order quantity

Q: what’s your payment terms?
Regularly doing 30% deposit and 70% balance by T/T, Western Union, Paypal, other payment terms also can be discussed based on our cooperation.

Q: How to control your quality?
We have professional QC team, control the quality during the mass production and inspect completely goods before shipping.

Q:  If we don’t have shipping forwarder in China, would you do this for us?
We can offer you best shipping line to ensure you can get the goods timely at best price.

Q: come to China before, can you be my guide in China?
We are happy to provide you orservice, such as booking ticket, pick up at the airport, booking hotel, accompany visiting market or factory

  /* 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: Video Technical Support
Warranty: 1 Year
Lubrication Style: Oil-less
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Horizontal
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 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 Are the Maintenance Requirements for Screw Compressors?

Screw compressors require regular maintenance to ensure optimal performance, reliability, and longevity. Here’s a detailed overview of the maintenance requirements for screw compressors:

  • 1. Lubrication: Screw compressors rely on proper lubrication to reduce friction, minimize wear, and maintain efficient operation. Regular lubrication of the rotor bearings, seals, and other moving parts is essential. The type and frequency of lubrication may vary depending on the compressor’s design and manufacturer’s recommendations.
  • 2. Filter Replacement: Screw compressors have intake filters that prevent dust, debris, and contaminants from entering the compression chamber. These filters need to be inspected regularly and replaced or cleaned as necessary to ensure unrestricted airflow and prevent damage to the compressor components.
  • 3. Cooling System Maintenance: Screw compressors may have cooling systems, such as air or water coolers, to dissipate heat generated during compression. The cooling system should be inspected periodically, and any blockages or leaks should be addressed promptly to maintain optimal cooling efficiency.
  • 4. Inspection of Belts and Couplings: If the screw compressor is belt-driven or connected through couplings, regular inspection of belts, pulleys, and couplings is necessary. Worn or damaged belts should be replaced, and couplings should be checked for alignment and tightness to ensure smooth power transmission.
  • 5. Cleaning of Heat Exchangers: Heat exchangers in screw compressors, such as intercoolers and aftercoolers, can accumulate dirt, scale, and other deposits over time. Regular cleaning of these heat exchangers is important to maintain their heat transfer efficiency and prevent overheating of the compressed air or gas.
  • 6. Inspection of Seals and Gaskets: The seals and gaskets in a screw compressor play a critical role in maintaining proper compression and preventing air or gas leakage. Regular inspection of these components is necessary to detect any signs of wear, damage, or leakage. Faulty seals or gaskets should be replaced promptly to maintain the compressor’s efficiency.
  • 7. Regular Performance Testing: Periodic performance testing of screw compressors is recommended to assess their operating parameters, such as discharge pressure, flow rate, and power consumption. This helps identify any deviations from the expected performance and allows for adjustments or repairs as needed.

It’s important to note that the specific maintenance requirements for screw compressors may vary depending on the compressor’s design, manufacturer’s recommendations, operating conditions, and usage. Consulting the compressor’s manual and following the manufacturer’s guidelines is crucial for maintaining the compressor effectively and ensuring its reliable operation over time.

China factory 2021 New Design Energy Save AC Power Oil Injected 90kw 0.7MPa Screw Air Compressor for Painting   air compressor lowesChina factory 2021 New Design Energy Save AC Power Oil Injected 90kw 0.7MPa Screw Air Compressor for Painting   air compressor lowes
editor by CX 2024-04-04

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.

      
/* March 10, 2571 17:59:20 */!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: 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 supplier Industrial Compressor Heavy Duty VSD Stationary AC Power Electric Air Cooled Directly Driven Rotary Screw Gas Air Compressors Pump with Germany Ghh Rand Air End air compressor parts

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.

 

/* March 10, 2571 17:59:20 */!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: 1 Year
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Customization:
Available

|

air compressor

Are There Portable Screw Compressors Available?

Yes, portable screw compressors are available in the market to cater to various applications that require mobility and flexibility. Here’s a detailed explanation:

Portable screw compressors are compact and designed for easy transportation, allowing them to be used in different locations as needed. They offer the advantage of providing compressed air or gas on-site without the need for a fixed installation.

These compressors are typically designed with features that make them suitable for portable applications. Some key characteristics of portable screw compressors include:

  • 1. Compact and Lightweight Design: Portable screw compressors are designed to be lightweight and compact, making them easy to transport and maneuver. They are often mounted on wheels or skids for enhanced mobility.
  • 2. Durability and Robustness: Portable compressors are built to withstand the rigors of transportation and on-site use. They are constructed with sturdy materials and reinforced components to ensure durability in various working environments.
  • 3. Engine-Powered: Many portable screw compressors are powered by internal combustion engines, such as gasoline or diesel. This eliminates the need for a fixed power source, allowing them to be used in remote locations or areas without access to electricity.
  • 4. Integrated Controls and Safety Features: Portable compressors are equipped with user-friendly controls and safety features for easy operation and protection. These may include start/stop controls, pressure regulation systems, temperature monitoring, and safety shutdown mechanisms.
  • 5. Noise and Vibration Reduction: Portable screw compressors often incorporate noise and vibration reduction technologies to minimize their operational noise levels and vibrations. This helps maintain a comfortable and safe working environment.
  • 6. Versatility in Application: Portable screw compressors are designed to accommodate a wide range of applications. They can be used for construction projects, road repairs, mining operations, oil and gas exploration, emergency air supply, and other portable compressed air or gas requirements.

The capacity and performance of portable screw compressors can vary, ranging from smaller units suitable for light-duty tasks to larger compressors capable of delivering higher volumes and pressures for heavy-duty applications.

When selecting a portable screw compressor, it’s important to consider factors such as the required air or gas flow rate, operating pressure, power source availability, environmental conditions, and specific application needs. Consulting with manufacturers or suppliers can help in choosing the most suitable portable screw compressor for a particular use case.

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

Can Screw Compressors Handle High-Pressure Applications?

Yes, screw compressors are capable of handling high-pressure applications. Here’s a detailed explanation:

Screw compressors are known for their ability to deliver high-pressure compressed air or gas. The design of screw compressors allows them to achieve higher pressure ratios compared to other types of compressors, such as reciprocating piston compressors.

The compression process in screw compressors is continuous and smooth, which enables them to handle high-pressure requirements efficiently. The intermeshing rotors create compression chambers that gradually reduce in volume, resulting in the compression of air or gas. By adjusting the rotational speed of the rotors and optimizing the design parameters, screw compressors can generate the desired high discharge pressures.

However, it’s important to note that the maximum pressure capability of a screw compressor may vary depending on factors such as:

  • 1. Compressor Design: The design features of the screw compressor, including the rotor profile, sealing mechanism, and cooling system, can influence its maximum pressure capacity.
  • 2. Rotor Size and Speed: The size and rotational speed of the rotors impact the compression ratio and, consequently, the achievable discharge pressure. Larger rotors and higher rotational speeds generally allow for higher pressure ratios.
  • 3. Drive Power: The power of the drive motor connected to the screw compressor affects its ability to handle high-pressure applications. Adequate power is necessary to overcome the resistance and maintain the desired compression ratio.
  • 4. Structural Integrity: The structural integrity and material strength of the compressor housing, rotors, and other components determine the maximum pressure that the compressor can withstand without failure or leakage.

It’s important to select a screw compressor with the appropriate specifications and consult the manufacturer’s guidelines to ensure that it can handle the specific high-pressure requirements of the application.

Additionally, it’s worth noting that high-pressure applications may also require additional equipment, such as pressure vessels or downstream pressure regulators, to safely handle and control the compressed air or gas at the desired pressure levels.

China supplier Industrial Compressor Heavy Duty VSD Stationary AC Power Electric Air Cooled Directly Driven Rotary Screw Gas Air Compressors Pump with Germany Ghh Rand Air End   air compressor partsChina supplier Industrial Compressor Heavy Duty VSD Stationary AC Power Electric Air Cooled Directly Driven Rotary Screw Gas Air Compressors Pump with Germany Ghh Rand Air End   air compressor parts
editor by CX 2024-02-15

China Standard 37kw 50HP Highly AC New AC Variable Displacement Twin Stage Electric Stationary Air Cooling/Water Cooling Quiet Rotary Type Screw Gas Air Compressors Industrial air compressor lowes

Product Description

 

Product Description

Two-Stage Screw Air End

Double- stage compression means that 2 airends are connected in series, and the compression ratio is changed to achieve compressed air.

Super High Efficiency Motor

Brazil WEG IE4 motor,three phase induction motor;Class F insulation ,class B temperature rise,,IP55 protection;

Variable Speed Drive

The pressure could be selected by the strong smart controller of the frequency inverter continually ,to ensure that the actual air displacement is consistent with the user’s air consumption

 

 

 

 

 

 

 

Technical Parameter

model air pressure air displacement power noise dimension
mpa bar(e) psi(g) m3/min cfm hp kw dB(A) L(mm) W(mm) H(mm)
GAT-22A 0.6 6 87 4.2 148 30 22 62-66 1450 950 1250
0.7 7 102 3.95 139
0.8 8 116 3.5 124
1 10 145 3.2 113
1.3 13 189 2.6 92
GAT-30A 0.6 6 87 6.2 219 41 30 63-67 1700 1100 1450
0.7 7 101 6.03 213
0.8 8 116 5.4 191
GAT-37A 0.6 6 87 7.1 251 50 37
0.7 7 102 6.9 244
0.8 8 116 6.7 237
1 10 145 5.6 198
1.3 13 189 5.4 191
GAT-45A 0.6 6 87 8.3 293 61 45 66-70
0.7 7 102 8.01 283
0.8 8 116 7.8 275
1 10 145 6.5 230
1.3 13 189 6.2 219
GAT-55A 0.6 6 87 11.4 403 75 55 70-74 2150 1380 1780
0.7 7 102 10.8 381
0.8 8 116 10 353
1 10 145 9.3 328
GAT-75A 0.6 6 87 16 565 102 75
0.7 7 102 14.2 501
0.8 8 116 14 494
1 10 145 13 459
1.3 13 189 9.5 335
GAT-90A 0.6 6 87 19 671 122 90 73-77 2800 1750 1900
0.7 7 102 18 636
0.8 8 116 16.5 583
1 10 145 16 565
1.3 13 189 13 459
GAT-110A 0.6 0.6 6 87 24 847 150 74-78
0.7 7 102 22 777
0.8 8 116 18.5 653
1 10 145 18 636
1.3 13 189 16 565
GAT-132A 0.6 6 87 26.5 936 179 132 75-79
0.7 7 101 26 918
0.8 8 116 23 812
1 10 145 22 777
1.3 13 189 18 636
GAT-160A 0.6 6 87 32.5 1148 217 160 3300 2050 2150
0.7 7 102 32 1130
0.8 8 116 28 989
1 10 145 26 918
1.3 13 189 22.5 794
GAT-185A 0.6 6 87 41 1148 251 185
0.7 7 101 37.92 1339
0.8 8 116 32.5 1148
1 10 145 31 1094
1.3 13 189 26 918
GAT-200A 0.6 0.6 6 87 43.8 1547 272 78-82
0.7 7 102 40.5 1430
0.8 8 116 37 1306
1 10 145 32.5 1148
1.3 13 189 30.5 1077
GAT-220A 0.6 6 87 49.5 1748 299 220
0.7 7 102 49 1730
0.8 8 116 41 1447
1 10 145 36.5 1289
1.3 13 189 32 1130
GAT-250A 0.6 6 87 56.5 1995 340 250 3850 2250 2060
0.7 7 102 54 1907
0.8 8 116 49 1730
1 10 145 40 1412
1.3 13 189 36 1271

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

Combined Screw Air Compressor 5hp Combined Screw Air Compressor 20hp Oil Free Scroll 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.

 

 

/* March 10, 2571 17:59:20 */!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: 1 Year
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 Gas Line Maintenance?

Gas air compressors can be used for certain aspects of gas line maintenance, primarily for tasks that require compressed air. Here’s a detailed explanation:

1. Clearing Debris and Cleaning:

Gas air compressors can be utilized to clear debris and clean gas lines. Compressed air can be directed through the gas lines to dislodge and remove dirt, dust, rust particles, or other contaminants that may accumulate over time. This helps maintain the integrity and efficiency of the gas lines.

2. Pressure Testing:

Gas line maintenance often involves pressure testing to ensure the lines can withstand the required operating pressures. Gas air compressors can provide the necessary compressed air to pressurize the lines for testing purposes. By pressurizing the gas lines with compressed air, technicians can identify any leaks or weaknesses in the system.

3. Leak Detection:

Gas air compressors can also be used in conjunction with appropriate leak detection equipment to identify and locate gas leaks in the gas lines. Compressed air can be introduced into the lines, and the detection equipment can then identify any areas where the compressed air escapes, indicating a potential gas leak.

4. Valve and Equipment Maintenance:

Gas line maintenance may involve the inspection, maintenance, or replacement of valves and associated equipment. Compressed air can be used to clean and blow out debris from valves, purge lines, or assist in the disassembly and reassembly of components.

5. Pipe Drying:

Gas air compressors can aid in drying gas lines after maintenance or repairs. By blowing compressed air through the lines, any residual moisture can be removed, ensuring the gas lines are dry before being put back into service.

6. Precautions and Regulations:

When using gas air compressors for gas line maintenance, it is essential to follow safety precautions and adhere to relevant regulations. Gas line maintenance often involves working in hazardous environments, and proper training, equipment, and procedures must be followed to ensure the safety of personnel and the integrity of the gas system.

It is important to note that gas air compressors should not be used directly for pressurizing or transporting natural gas or other combustible gases. Gas line maintenance tasks involving gas air compressors primarily focus on using compressed air for specific maintenance and testing purposes, as outlined above.

In summary, gas air compressors can be useful for certain aspects of gas line maintenance, including clearing debris, pressure testing, leak detection, valve and equipment maintenance, and pipe drying. However, it is crucial to follow safety guidelines and regulations when working with gas lines and compressed air to ensure the safety and integrity of the gas system.

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 37kw 50HP Highly AC New AC Variable Displacement Twin Stage Electric Stationary Air Cooling/Water Cooling Quiet Rotary Type Screw Gas Air Compressors Industrial   air compressor lowesChina Standard 37kw 50HP Highly AC New AC Variable Displacement Twin Stage Electric Stationary Air Cooling/Water Cooling Quiet Rotary Type Screw Gas Air Compressors Industrial   air compressor lowes
editor by CX 2024-02-14

China wholesaler 2021 New Design Energy Save AC Power Oil Injected 75kw 0.7MPa Screw Air Compressor for Painting air compressor lowes

Product Description

Model Power
(KW)
Capacity/Pressure
( m3/bar)
Outlet size Weight
(kg)
Unit size mm
(LxWxH)
WZS-30PMII 22 5m3/6.5bar RP
1 1/2
760 1500x850x1280
4.1m3/8.5bar
3.5m3/10.5bar
3.2m3/12.5bar
WZS-40PMII 30 7.0m3/6.5bar RP
1 1/2
980 1950x1250x1650
6.4m3/8.5bar
4.9m3/10.5bar
4.2m3/12.5bar
WZS-50PMII 37 10m3/6.5bar RP
1 1/2
1080 1950x1250x1650
7.1m3/8.5bar
5.9m3/10.5bar
5.4m3/12.5bar
WZS-60PMII 45 12m3/6.5bar RP2 1980 1950x1250x1650
9.8m3/8.5bar
7.8m3/10.5bar
6.5m3/12.5bar
WZS-75PMII 55 16m3/6.5bar RP2 2180 2500x1650x1900
12.5m3/8.5bar
10.2m3/10.5bar
8.6m3/12.5bar
WZS-100PMII 75 18.5m3/6.5bar RP2 2280 2500x1650x1900
16.5m3/8.5bar
13m3/10.5bar
10m3/12.5bar
WZS-125PMII 90 23m3/6.5bar DN65 3200 3000x1800x2000
18.5m3/8.5bar
15.5m3/10.5bar
12m3/12.5bar
WZS-150PMII 110 27.5m3/6.5bar DN65 3360 3000x1800x2000
22.6m3/8.5bar
18.5m3/10.5bar
14.8m3/12.5bar
WZS-180PMII 132 32.5m3/6.5bar DN80 3560 3000x1800x2000
28m3/8.5bar
22.5m3/10.5bar
18.5m3/12.5bar
WZS-220PMIII 160 37.5m3/6.5bar DN80 3850 3380x1950x2200
32.6m3/8.5bar
26.8m3/10.5bar
22.8m3/12.5bar
WZS-250PMII 185 40.6m3/6.5bar DN80 4600 3380x1950x2200
37.8m3/8.5bar
32.5m3/10.5bar
26.6m3/12.5bar
WZS-270PMII 200 49m3/6.5bar DN100 5200 3380x1950x2200
41m3/8.5bar
38.5m3/10.5bar
31.5m3/12.5bar
WZS-300PMII 220 54.8m3/6.5bar DN125 6200 4000x2250x2400
49m3/8.5bar
41.5m3/10.5bar
37.5m3/12.5bar
WZS-350PMII 250 61m3/6.5bar DN125 6600 4000x2250x2400
54m3/8.5bar
45.5m3/10.5bar
40.5m3/12.5bar

Q1:Do you offer OEM/ODM/Customer’s logo print?
A1:Yes,OEM/ODM,Customer’s logo are welcomed.  

Q2:Delivery Time?
A2:Usually 5-25 days after receiving deposite, specific delivery date depends on order quantity.  

Q3: What’s your payment terms?
A3:Regularly 30% deposite and 70% balance by T/T,Western Union,Paypal ,other payment terms also can be discussed based on our cooperation.  

Q4:How to control your quality?
A4:We have professional QC team,control the quality during the mass production and inspect all goods before delivery.  
Q5:If we don’t have shipping forwarders in China, can you do that for us?
A5:We can offer best shipping line to ensure you can get the goods timely  at best price.  

Q6:I never come to China before,can you be my guide in China?
A6:We are happy to provide you one-stop service,such as booking the ticket,pick up at the airport, booking hotel,accompany visiting market or factory.

After-sales Service: Video Technical Support
Warranty: 1 Year
Lubrication Style: Oil-less
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Customization:
Available

|

air compressor

How Do You Select the Right Size Screw Compressor for Your Needs?

Choosing the right size screw compressor is crucial to ensure optimal performance, energy efficiency, and cost-effectiveness for your specific compressed air or gas requirements. Here’s a detailed explanation of the selection process:

Selecting the right size screw compressor involves considering several key factors:

  • 1. Air or Gas Demand: Determine your compressed air or gas demand by assessing the total required flow rate (measured in cubic feet per minute or liters per second) and the operating pressure (measured in pounds per square inch or bar). This information helps establish the compressor’s capacity requirements.
  • 2. Duty Cycle: Evaluate your operation’s duty cycle, which refers to the percentage of time the compressor will be running. Duty cycles can vary from continuous operation to intermittent or seasonal usage. The duty cycle affects the compressor’s sizing, as it determines the required compressor output and influences the compressor’s cooling and maintenance needs.
  • 3. Ambient Conditions: Consider the environmental conditions in which the compressor will operate. Factors such as temperature, humidity, and altitude can impact the compressor’s performance and cooling requirements. Ensure that the selected compressor is suitable for the specific ambient conditions of your facility.
  • 4. System Pressure Requirements: Determine the minimum and maximum operating pressure requirements for your application. This information is essential in selecting a compressor that can consistently deliver the required pressure range throughout its operating range.
  • 5. Efficiency Considerations: Evaluate the energy efficiency of different compressor models. Look for compressors with high energy efficiency ratings, such as those certified by organizations like the Air Compressor and Gas Association (CAGI) or ENERGY STAR. Energy-efficient compressors can significantly reduce operating costs over the equipment’s lifespan.
  • 6. Future Expansion: Consider any anticipated growth or changes in your compressed air or gas demand. If you expect increased demand in the future, it’s advisable to select a compressor with some extra capacity to accommodate future expansion without requiring immediate replacement.
  • 7. Maintenance and Serviceability: Assess the maintenance requirements and serviceability of different compressor models. Look for features that make routine maintenance tasks, such as filter changes or oil checks, easily accessible and convenient. Consider the availability of service technicians and spare parts for the chosen compressor brand or model.
  • 8. Manufacturer and Supplier Support: Research the reputation and track record of compressor manufacturers and suppliers. Choose established brands known for producing reliable, high-quality equipment. Consider factors such as warranty coverage, technical support availability, and the proximity of service centers.

Once you have gathered the necessary information and considered the factors mentioned above, you can consult with compressor manufacturers or suppliers who can provide expert advice and assist in selecting the right size screw compressor for your specific needs. They can perform detailed calculations, taking into account the factors discussed, to recommend a compressor that matches your requirements and provides optimal performance.

It’s important to note that selecting the right size screw compressor is a critical decision, and professional guidance is highly recommended to ensure an accurate assessment and proper matching of the compressor to your specific needs.

In summary, selecting the right size screw compressor involves assessing your compressed air or gas demand, duty cycle, ambient conditions, pressure requirements, efficiency considerations, future expansion plans, maintenance requirements, and manufacturer support. By considering these factors and seeking expert advice, you can choose a screw compressor that meets your needs and delivers reliable, efficient performance.

air compressor

What Is the Role of Control Systems in Screw Compressor Operation?

Control systems play a crucial role in the operation of screw compressors. Here’s a detailed explanation:

Screw compressors are complex machines that require precise control and monitoring for optimal performance and efficiency. Control systems provide the necessary intelligence and automation to regulate various aspects of screw compressor operation. Here are the key roles of control systems:

1. Start-up and Shutdown Control:

Control systems manage the start-up and shutdown sequences of screw compressors. During start-up, the control system ensures a gradual ramp-up of motor speed and system pressure to prevent sudden surges and excessive wear on components. During shutdown, it safely brings the compressor to a stop and performs necessary cooling and ventilation processes.

2. Load and Unload Control:

Screw compressors often feature load and unload operation to match compressed air supply with demand. The control system monitors system pressure, flow requirements, and other parameters to determine when to load or unload the compressor. It engages or disengages the compressor’s capacity control mechanism, such as inlet modulation valves or variable-speed drives, to maintain optimal operation at varying loads.

3. Pressure Control:

Control systems regulate the discharge pressure of screw compressors. They continuously monitor the system pressure and adjust compressor operation to maintain the desired pressure setpoint. The control system modulates the compressor’s capacity, adjusts the speed of the drive motor, or controls the opening and closing of inlet or discharge valves to achieve the target pressure.

4. Temperature Control:

Control systems monitor and control various temperature parameters within the screw compressor system. They ensure that the compressor operates within safe temperature limits by monitoring coolant temperatures, lubricant temperatures, and interstage or discharge temperatures. If temperature limits are exceeded, the control system may activate cooling mechanisms, adjust operating parameters, or trigger alarms and shutdowns to prevent damage.

5. Monitoring and Protection:

Control systems provide comprehensive monitoring and protection functions for screw compressors. They continuously collect data from various sensors and instruments, such as pressure sensors, temperature sensors, vibration sensors, and current sensors. The control system analyzes this data to detect abnormalities, malfunctions, or potential failures. It can initiate alarms, shutdowns, or safety interlocks to protect the compressor and associated equipment.

6. Energy Management:

Control systems optimize energy efficiency in screw compressor operation. They analyze system demand, performance characteristics, and energy consumption to make intelligent decisions regarding load modulation, capacity control, and motor speed adjustments. By optimizing the compressor’s operation, the control system helps reduce energy consumption, operating costs, and environmental impact.

7. Remote Monitoring and Control:

Modern control systems often offer remote monitoring and control capabilities. They can be integrated into supervisory control and data acquisition (SCADA) systems or connected to networked platforms. Remote access allows operators to monitor compressor performance, adjust operating parameters, receive alarms, and perform diagnostics from a central control room or via mobile devices.

In summary, control systems play a vital role in the operation of screw compressors by providing intelligent control, monitoring, and protection. They manage start-up and shutdown sequences, regulate load and unload operation, control pressure and temperature, monitor system parameters, optimize energy efficiency, and enable remote monitoring and control. By effectively managing the compressor’s operation, control systems contribute to reliable performance, energy efficiency, and overall system optimization.

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.

China wholesaler 2021 New Design Energy Save AC Power Oil Injected 75kw 0.7MPa Screw Air Compressor for Painting   air compressor lowesChina wholesaler 2021 New Design Energy Save AC Power Oil Injected 75kw 0.7MPa Screw Air Compressor for Painting   air compressor lowes
editor by CX 2023-10-26

China Hot selling AC Screw Diving Rotary Portable Piston Car Oil Free Oilless Air Compressor wholesaler

Product Description

AC Screw Diving Rotary Portable Piston Car Oil Free Oilless AirCompressor

Features: 

* Ultra Quiet  –  Only 60  decibels
* Oil-Free Pump – Cleaner air for better tool operation.
                           Less maintenance and Costs.
* Two pressure control gauges 
* One  universal 1/4″ quick connector
* Thermal Overload Protector
* 120 PSI  Maximum Pressure 
* 110v / 60 hz
* Low Amp Draw – 8.5 Amps 
* Time to fill tank from empty to full – 165 Seconds 
* Recovery time from 90 CHINAMFG to 120 CHINAMFG – 60 Seconds
* Less heat which dissipates more efficiently
* 8.0  Gal. Aluminum Air Tank With Wheel Kit 
  Only 37.25 pounds and easy to move around.
* L (24″) x W/D (13″) x H (21.85″)
* 37.25 lbs
* 1 Year Limited Warranty
* Comes complete with Wheel Kit & Air Filter
 

1.0  HP (Rated/Running) – 2.0 HP (Peak)
8.0  Gallon (Lightweight – Rust Free) Aluminum Tank
3.10 CFM @ 40 PSI      
2.20 CFM @ 90 PSI 

 
The CHINAMFG Ultra Quiet & Oil-Free Air Compressor is designed to be 1 of the quietest air compressors in the industry having only 60 decibels of sound.   
    
The powerful 1.0 HP  motor operates at only 1680 RPM creating less noise and less wear.
 
The Oil-Free Dual Piston Pump System is engineered for high performance and durability.
 
The CAir Compressor has a Oil-Free Dual Piston pump designed to have a life cycle before wear of 3000 Plus hours compared to other comparable air compressors with life cycles of 500 hours or less. 
 
The Oil-Free pump allows for use in a variety of temperatures and uneven terrains.
 
The large 8.0 Gallon Aluminum Air Tank is Lightweight and Rust-Free (37.25 lbs) with wheel kit that makes it very easy to transport.
 
This air compressor is ideal for anyone working inside where noise is a major issue.

Application Use:
Air Brushing,Blow Cleaning,Bolting/Wrenching,Brad Nailing/Stapling,Cutting,Drilling,Finish Nailing,Framing Nailing,
Hobby Nailing,Hobby Painting,Inflation,Roof Nailing,Sanding,Spraying,Surface Prep
 

Output at 40 psi   3.10 cfm
Output at 90 psi   2.20 cfm
Maximum Pressure   120 psi
Kick On / Kick Off   90 CHINAMFG / 120 psi
Time To Fill Tank (from empty)   165 seconds
Motor   1 Hp piston Electric (8.50 Amps)
Motor Speed   1,680 rpm
Voltage / Hertz   110 V / 60 Hz
Pump Type   Oil Free, Dual Piston
Decibel Level   60 dB
Tank Capacity   8.0 gallons
Weight   37.25 lbs
Dimensions   24″ (L) x 13″ (W) x 21.85″ (H)
Manufacturer Limited Warranty   1 Year

 

Lubrication Style: Oil-free
Cooling System: Air Cooling
Cylinder Arrangement: Parallel Arrangement
Cylinder Position: Horizontal
Structure Type: Closed Type
Compress Level: Single-Stage
Customization:
Available

|

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

What Is the Role of Air Dryers in Screw Compressor Systems?

Air dryers play a crucial role in screw compressor systems by removing moisture from the compressed air. Here’s a detailed explanation:

Air contains moisture in the form of water vapor, which can be problematic when compressed. As air is compressed, its temperature rises, causing the moisture to condense into liquid water. This moisture can cause various issues within the compressed air system, including equipment corrosion, decreased efficiency, and compromised air quality.

The role of air dryers in screw compressor systems is to remove this moisture from the compressed air, ensuring dry and clean air for reliable and efficient operation. Here are the key functions and benefits of air dryers:

1. Moisture Removal:

Air dryers extract moisture from the compressed air, reducing its dew point temperature. By lowering the dew point, the risk of condensation and subsequent issues, such as corrosion and water damage to pneumatic equipment, is minimized. Dry air is essential for maintaining the integrity and longevity of the system components.

2. Protection of Pneumatic Equipment:

Moisture in the compressed air can negatively impact pneumatic equipment, including valves, actuators, and air tools. It can cause rust, corrosion, and malfunctioning of these components. By using air dryers to remove moisture, the risk of damage to the equipment is significantly reduced, extending their lifespan and ensuring reliable performance.

3. Prevention of Contamination:

Moisture in compressed air can also lead to the growth of microorganisms, such as bacteria and fungi, within the system. These contaminants can contaminate the air and pose a health risk or cause product spoilage in sensitive applications, such as food and pharmaceutical industries. Air dryers help prevent the growth of these contaminants, ensuring clean and safe compressed air.

4. Enhanced Efficiency:

Dry compressed air improves the efficiency of the overall system. Moisture in the air can cause pressure drop issues, affecting the performance of pneumatic tools and equipment. Dry air allows for optimal operation, reducing energy consumption and enhancing system efficiency.

5. Reduced Maintenance and Downtime:

Moisture-related issues can lead to increased maintenance requirements and system downtime. By removing moisture with air dryers, the need for frequent maintenance and repairs caused by water-related problems is minimized. This helps in reducing costly downtime and improving productivity.

There are different types of air dryers commonly used in screw compressor systems:

a) Refrigerated Air Dryers: These dryers cool the compressed air, causing moisture to condense and separate from the air stream. The condensed water is then drained from the system, leaving behind dry air.

b) Desiccant Air Dryers: These dryers utilize desiccant materials, such as silica gel or activated alumina, to adsorb moisture from the compressed air. The desiccant material undergoes a regeneration process to remove the accumulated moisture, ensuring continuous drying of the compressed air.

c) Membrane Air Dryers: These dryers use permeable membranes to selectively remove moisture from the compressed air. The membranes allow water vapor to pass through while retaining dry air, effectively drying the compressed air stream.

The selection of the appropriate air dryer depends on factors such as the desired level of moisture removal, the specific application requirements, and the operating conditions of the screw compressor system.

In summary, air dryers play a vital role in screw compressor systems by removing moisture from the compressed air. They protect equipment, prevent contamination, enhance efficiency, and reduce maintenance and downtime. By ensuring dry and clean compressed air, air dryers contribute to the longevity, reliability, and optimal performance of the entire compressed air system.

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.

China Hot selling AC Screw Diving Rotary Portable Piston Car Oil Free Oilless Air Compressor   wholesaler China Hot selling AC Screw Diving Rotary Portable Piston Car Oil Free Oilless Air Compressor   wholesaler
editor by CX 2023-10-17

China Hot selling Screw Industrial AC Oil Free Used CHINAMFG Zr 75 Air Compressor with Hot selling

Product Description

        CHINAMFG is renowned for designing and manufacturing the most durable oil-free tooth compressors. The ZR/ZT rotary tooth compressor comes out of this strong tradition. Ideal for industries where high-quality oil-free air is key, the ZR/ZT offers the highest reliability and safety in combination with low energy costs.
       Oil-free air is used in all kinds of industries where air quality is paramount for the end product and production process. These applications include food and beverage processing, pharmaceutical manufacturing, chemical and petrochemical processing, fermentation, wastewater treatment, pneumatic conveying, non-woven textile manufacturing and many more.
       With the ZR/ZT, we provide an all-in-1 standard package incorporating the latest technology in a built-tolast design. To further optimize your ZR/ZT’s performance or to simply tailor it to your specific production environment, optional features are available.

ZR/ZT110-275(FF)
Model Hz FAD Power Noise Weight
I/s M³/min cfm kw hp db(A) Standard FF
kg  Ibs kg Ibs
ZR110-7.5 50 318.2 19.1 674 110 150 69 2709 5972 2954 6512
ZR110-8.6 50 286.1 17.2 606 110 150 69 2709 5972 2954 6512
ZR110-10 50 266.5 16 565 110 150 69 2709 5972 2954 6512
ZR132-7.5 50 365.6 21.9 775 132 150 69 2900 6393 3145 6933
ZR132-8.6 50 326.4 19.6 692 132 150 69 2900 6393 3145 6933
ZR132-10 50 314.2 18.9 666 132 150 69 2900 6393 3145 6933
ZR145-7.5 50 391.6 23.5 830 145 200 70 2895 6382 3145 6933
ZR145-8.6 50 361.7 21.7 766 145 200 70 2895 6382 3145 6933
ZR145-10 50 334.5 20.1 709 145 200 69 2895 6382 3145 6933
ZR145-13 50 304 18.2 644 145 200 73 2895 6382 3145 6933
ZR160-7.5 50 472.2 28.3 1001 160 200 69 3760 8289 4670 15715
ZR160-8.6 50 435 26.1 922 160 200 69 3760 8289 4670 15715
ZR160-10 50 402.6 24.2 853 160 200 69 3760 8289 4670 15715
ZR200-7.5 50 602.1 36.1 1276 200 250 67 3860 8510 5230 11530
ZR200-8.6 50 551.6 33.1 1169 200 250 67 3860 8510 5230 11530
ZR200-10 50 506.2 30.4 1073 200 250 69 3860 8510 5230 11530
ZR250-7.5 50 717.6 43.1 1521 250 300 67 4310 9502 5680 12522
ZR250-8.6 50 683.8 41 1449 250 300 67 4310 9502 5680 12522
ZR250-10 50 622.5 37.4 1319 250 300 67 4310 9502 5680 12522
ZR250-13³ 50 514.9 30.9 1091 250 300 70 4310 9502    
ZR275-7.5 50 774.1 46.4 1640 275 350 67 4640 15719 6571 13250
ZR275-8.6 50 716.7 43 1518 275 350 67 4640 15719 6571 13250
ZR275-10 50 683.5 41 1448 275 350 67 4640 15719 6571 13250
ZR275-13³ 50 561.8 33.7 1190 275 350 70 4640 15719    
ZT110-7.5 50 306.9 18.4 650 110 150 71 3654 8056 4146 9140
ZT110-8.6 50 286.2 17.2 606 110 150 71 3654 8056 4146 9140
ZT110-10 50 266.9 16 566 110 150 71 3654 8056 4146 9140
ZT132-7.5 50 363.1 21.8 769 132 150 72 3845 8477 4355 9601
ZT132-8.6 50 325.2 19.5 689 132 150 72 3845 8477 4355 9601
ZT132-10 50 313.3 18.8 664 132 150 72 3845 8477 4355 9601
ZT145-7.5 50 387.3 23.2 821 145 200 72 3840 8466 4350 9590
ZT145-8.6 50 358.4 21.5 759 145 200 72 3840 8466 4350 9590
ZT145-10 50 332.3 19.9 704 145 200 72 3840 8466 4350 9590
ZT160-7.5 50 465.5 27.9 986 160 200 77 5150 11354 5590 12324
ZT160-8.6 50 428.3 25.7 908 160 200 77 5150 11354 5590 12324
ZT160-10 50 396.3 23.8 840 160 200 78 5150 11354 5590 12324
ZT200-7.5 50 568.4 34.1 1204 200 250 78 5250 11574 6150 13558
ZT200-8.6 50 521.7 31.3 1105 200 250 78 5250 11574 6150 13558
ZT200-10 50 499.6 30 1059 200 250 78 5250 11574 6150 13558
ZT250-7.5 50 706.3 42.4 1497 250 300 77 5700 12566 6600 14450
ZT250-8.6 50 673.5 40.4 1427 250 300 78 5700 12566 6600 14550
ZT250-10 50 613.9 36.8 1301 250 300 78 5700 12566 6600 14550
ZT275-7.5 50 738.1 44.3 1564 275 350 77 6030 13294 7080 15609
ZT275-8.6 50 706.3 42.4 1497 275 350 78 6030 13294 7080 15609
ZT275-10 50 673.1 40.4 1426 275 350 78 6030 13294 7080 15609

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

Are There Oil-Free Screw Compressors Available?

Yes, oil-free screw compressors are available in the market to cater to applications where oil contamination is a concern. Here’s a detailed explanation:

Oil-free screw compressors, as the name suggests, are designed to operate without the use of lubricating oil in the compression chamber. These compressors offer several advantages in industries where oil-free compressed air or gas is required, such as in food and beverage, pharmaceutical, electronics, and certain manufacturing processes.

The key features and considerations of oil-free screw compressors include:

  • 1. Specialized Design: Oil-free screw compressors are designed with specialized materials, coatings, and sealing systems to eliminate the need for lubricating oil in the compression process. The rotors and other internal components are constructed to ensure minimal friction and wear, even in the absence of oil.
  • 2. Dry Compression: Unlike lubricated screw compressors, oil-free screw compressors rely on dry compression methods. The compression chamber is designed to achieve compression without the presence of oil, ensuring that the discharged air or gas is free from oil contaminants. This is particularly critical in industries where oil contamination can have detrimental effects on product quality or equipment performance.
  • 3. Sealing Technology: Oil-free screw compressors employ advanced sealing technologies to prevent air or gas leakage between the high-pressure and low-pressure sides of the compressor. These sealing systems ensure efficient compression while maintaining the required clearances between the rotors and the compressor housing.
  • 4. Cooling Systems: Oil-free screw compressors utilize alternative cooling methods, such as air or water cooling, to dissipate the heat generated during compression. Efficient cooling is crucial to prevent overheating and ensure reliable operation.
  • 5. Filtration Systems: Oil-free compressors often incorporate high-quality filtration systems to remove particulates, moisture, and other contaminants from the incoming air or gas. These filtration systems help maintain the integrity of the compressor and ensure the delivery of clean, oil-free compressed air or gas.
  • 6. Application-Specific Solutions: Oil-free screw compressors are available in various sizes and configurations to meet specific application requirements. They can be tailored to deliver the desired air or gas flow rates, pressures, and purity levels.

It’s important to note that oil-free screw compressors generally have higher initial costs compared to lubricated compressors due to their specialized design and materials. However, they offer benefits such as reduced maintenance, minimized risk of oil contamination, and compliance with stringent industry standards or regulations.

When considering an oil-free screw compressor, it’s crucial to assess the specific application needs, air quality requirements, and operating conditions. Consulting with manufacturers or suppliers can help in selecting the most suitable oil-free screw compressor for a particular industry or process.

In summary, oil-free screw compressors are available and offer a reliable and efficient solution for applications where oil-free compressed air or gas is essential. These compressors are designed with specialized features to ensure dry compression, reliable sealing, effective cooling, and high-quality filtration.

air compressor

What Is the Role of Control Systems in Screw Compressor Operation?

Control systems play a crucial role in the operation of screw compressors. Here’s a detailed explanation:

Screw compressors are complex machines that require precise control and monitoring for optimal performance and efficiency. Control systems provide the necessary intelligence and automation to regulate various aspects of screw compressor operation. Here are the key roles of control systems:

1. Start-up and Shutdown Control:

Control systems manage the start-up and shutdown sequences of screw compressors. During start-up, the control system ensures a gradual ramp-up of motor speed and system pressure to prevent sudden surges and excessive wear on components. During shutdown, it safely brings the compressor to a stop and performs necessary cooling and ventilation processes.

2. Load and Unload Control:

Screw compressors often feature load and unload operation to match compressed air supply with demand. The control system monitors system pressure, flow requirements, and other parameters to determine when to load or unload the compressor. It engages or disengages the compressor’s capacity control mechanism, such as inlet modulation valves or variable-speed drives, to maintain optimal operation at varying loads.

3. Pressure Control:

Control systems regulate the discharge pressure of screw compressors. They continuously monitor the system pressure and adjust compressor operation to maintain the desired pressure setpoint. The control system modulates the compressor’s capacity, adjusts the speed of the drive motor, or controls the opening and closing of inlet or discharge valves to achieve the target pressure.

4. Temperature Control:

Control systems monitor and control various temperature parameters within the screw compressor system. They ensure that the compressor operates within safe temperature limits by monitoring coolant temperatures, lubricant temperatures, and interstage or discharge temperatures. If temperature limits are exceeded, the control system may activate cooling mechanisms, adjust operating parameters, or trigger alarms and shutdowns to prevent damage.

5. Monitoring and Protection:

Control systems provide comprehensive monitoring and protection functions for screw compressors. They continuously collect data from various sensors and instruments, such as pressure sensors, temperature sensors, vibration sensors, and current sensors. The control system analyzes this data to detect abnormalities, malfunctions, or potential failures. It can initiate alarms, shutdowns, or safety interlocks to protect the compressor and associated equipment.

6. Energy Management:

Control systems optimize energy efficiency in screw compressor operation. They analyze system demand, performance characteristics, and energy consumption to make intelligent decisions regarding load modulation, capacity control, and motor speed adjustments. By optimizing the compressor’s operation, the control system helps reduce energy consumption, operating costs, and environmental impact.

7. Remote Monitoring and Control:

Modern control systems often offer remote monitoring and control capabilities. They can be integrated into supervisory control and data acquisition (SCADA) systems or connected to networked platforms. Remote access allows operators to monitor compressor performance, adjust operating parameters, receive alarms, and perform diagnostics from a central control room or via mobile devices.

In summary, control systems play a vital role in the operation of screw compressors by providing intelligent control, monitoring, and protection. They manage start-up and shutdown sequences, regulate load and unload operation, control pressure and temperature, monitor system parameters, optimize energy efficiency, and enable remote monitoring and control. By effectively managing the compressor’s operation, control systems contribute to reliable performance, energy efficiency, and overall system optimization.

air compressor

What Is a Screw Compressor?

A screw compressor is a type of positive displacement compressor that operates based on the principle of rotary motion. Here’s a detailed explanation:

Working Principle:

A screw compressor consists of two helical rotors, typically called 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. As the rotors rotate, the volume of these chambers decreases, compressing the air or gas trapped inside.

Compression Process:

As the air or gas enters the screw compressor, it gets trapped between the rotors’ lobes or threads. As the rotors continue to rotate, the trapped air or gas is carried along the length of the rotors and gradually compressed. The compression occurs continuously and smoothly as the air or gas moves from the suction side to the discharge side of the compressor. The interlocking rotors ensure a continuous flow of compressed air or gas without pulsation.

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 to provide lubrication, cooling, and sealing between the rotors. The oil also helps in reducing friction and minimizing wear. Oil-injected screw compressors are commonly used in various industrial applications where a small amount of oil in the compressed air is acceptable.

On the other hand, oil-free screw compressors 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 prevent the need for oil. Oil-free screw compressors are often favored in applications where oil-free and contaminant-free compressed air is essential, such as in food and beverage, pharmaceutical, and electronics industries.

Applications:

Screw compressors are widely used in various industries for a range of applications. They are commonly employed in manufacturing plants, refineries, power generation facilities, and other industrial settings to supply compressed air or gas for pneumatic tools, process equipment, air conditioning systems, and more. The ability of screw compressors to deliver a continuous flow of compressed air or gas makes them suitable for applications that require a steady and reliable source of compressed air.

Advantages:

Screw compressors offer several advantages compared to other types of compressors. They provide high efficiency and can deliver a large volume of compressed air or gas. The continuous compression process results in smooth operation with minimal pulsation. Additionally, screw compressors are known for their compact design, low vibration levels, and relatively quiet operation.

In summary, a screw compressor is a rotary positive displacement compressor that uses interlocking helical rotors to compress air or gas. It operates based on a continuous compression process and is available in both oil-injected and oil-free variants. Screw compressors find widespread use in various industries for applications that require a reliable source of compressed air or gas.

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editor by CX 2023-10-05