Tag Archives: air blower compressor

China high quality Roots Blower Gas Compressor for Air Delivery Gas Combustion air compressor lowes

Product Description

Sewage Treatment Roots Blower for Wastewater Treatment Plant

Roots Blowers Operational Principle
Roots blower is a dual-rotor compression machine, the axial directions of the 2 rotors are parallel to each other. The rotor is composed of an impeller and a shaft. There are small gaps between the impeller and the impeller, the impeller and the casing and the wallboard to avoid mutual contact and friction. The 2 pairs of rotors are driven by the prime mover through a pair of synchronous gears, and rotate in opposite directions at a constant speed.

With the mutual meshing of the 2 gears, the inlet and outlet of the blower are not directly communicated. The impeller, the casing and the wall panel form a closed elementary volume to achieve the effect of conveying gas.

Introduction of Roots Blower
Roots blowers were only used for positive pressure blowing at first, and later developed into the vacuum field, evolving roots vacuum pumps. When the air inlet is at normal local atmospheric pressure, its exhaust gauge pressure range is generally 9.8~200kpa. When used as a vacuum pump, the vacuum degree of direct exhaust air can reach -9.8~-80kpa.

Although roots blowers and roots vacuum pumps are nominally divided into blowers and vacuum pumps, they all work near atmospheric pressure and there is not much difference in pressure characteristics.

Rotary speed (r/min) Pressure rise (kPa) Capacity (m3/min) Shaft power (kW) Motor Type Motor Power (kW)
1400 9.8 22.00 10.20 Y160L-4 15
14.7 21.85 12.12 Y160L-4 15
19.6 21.72 14.03 Y180M-4 18.5
24.5 21.53 15.93 Y180M-4 18.5
29.4 21.42 17.92 Y180L-4 22
34.3 21.32 19.92 Y200L-4 30
39.2 21.23 21.92 Y200L-4 30
44.1 21.17 23.83 Y200L-4 30
49 21.07 25.83 Y200L-4 30
53.9 20.95 27.93 Y225S-4 37
58.8 20.85 29.72 Y225S-4 37
63.7 20.76 33.34 Y225S-4 37
68.6 20.63 35.85 Y225M-4 45
73.5 20.45 37.97 Y225M-4 45
78.4 20.33 40.13 Y225M-4 45
83.3 20.18 43.00 Y250M-4 55
88.2 20.03 46.10 Y250M-4 55
93.1 19.88 49.80 Y250M-4 55
98.0 19.72 52.00 Y280S-4 75

Notes: For more Roots blower models, please contact us for details!

Features of Roots blower
Compared with other types of gas compressors, Roots blowers have the following characteristics:
1. Because it is a positive displacement blower, it has the characteristics of forced rise. Under the condition of a certain speed, the flow is also certain. In the small flow area in time, there will be no surging phenomenon like a centrifugal blower, and it has relatively stable working characteristics.
2. As a rotary machine, there is no reciprocating motion mechanism and air valve, and there are few wearing parts, so it has a long service life and good power balance. It can run at a higher speed without building a heavy foundation.
3. There is a small gap between the impeller, between the impeller and the wallboard and the casing. It does not require oil lubrication like screw and sliding vane compressors during operation. Therefore, it can ensure that the conveyed gas does not contain oil and does not need to use gas. Auxiliary equipment such as oil separator.
4. Except for synchronous gears and bearings, there is no other mechanical friction, so the mechanical efficiency is high.
5. In addition, the Roots blower also has the advantages of simple structure, convenient operation, cheap maintenance, and long maintenance period.

As a typical gas pressurizing and conveying machine, Roots blower has a wide range of characteristics in its specific pressure area. The flow rate is usually 0.5~800m3/min, and the maximum can reach about 1400m3/min. The single-stage working pressure is -53.3~98kPa. When double-clicking in series, it can achieve -80~200kpa.

In terms of application, Roots blowers are mostly used as air blowers. It is used in many fields such as building materials, electric power, smelting, chemical and petrochemical, mining, ports, textiles, medicine, papermaking, and aquatic products. In addition, it can also be used to transport gases other than air, such as biogas, hydrogen, industrial oxygen, carbon monoxide, carbon dioxide, and methane. Acetylene, gas, etc.

Notes: For more Roots blower models, please contact us for details! /* 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

Material: Iron
Usage: Gas Pressure Rise
Flow Direction: Axial Flow
Pressure: Low Pressure
Certification: ISO
Application: Air, Biogas, Hydrogen, Industrial Oxygen


air compressor

Can air compressors be used for painting and sandblasting?

Yes, air compressors can be used for both painting and sandblasting applications. Here’s a closer look at how air compressors are utilized for painting and sandblasting:


Air compressors are commonly used in painting processes, especially in automotive, industrial, and construction applications. Here’s how they are involved:

  • Spray Guns: Air compressors power spray guns used for applying paint coatings. The compressed air atomizes the paint, creating a fine mist that can be evenly sprayed onto surfaces. The pressure and volume of the compressed air impact the spray pattern, coverage, and overall finish quality.
  • Paint Mixers and Agitators: Compressed air is often used to power mixers and agitators that ensure proper blending of paint components. These devices use the compressed air to stir or circulate the paint, preventing settling and maintaining a consistent mixture.
  • Airbrushing: Air compressors are essential for airbrushing techniques, which require precise control over airflow and pressure. Airbrushes are commonly used in artistic applications, such as illustrations, murals, and fine detailing work.


Air compressors play a crucial role in sandblasting operations, which involve propelling abrasive materials at high velocity to clean, etch, or prepare surfaces. Here’s how air compressors are used in sandblasting:

  • Blasting Cabinets: Air compressors power blasting cabinets or booths, which are enclosed spaces where the sandblasting process takes place. The compressed air propels the abrasive media, such as sand or grit, through a nozzle or gun, creating a forceful stream that impacts the surface being treated.
  • Abrasive Blasting Pots: Air compressors supply air to abrasive blasting pots or tanks that store and pressurize the abrasive media. The compressed air from the compressor enters the pot, pressurizing it and allowing for a controlled release of the abrasive material during the sandblasting process.
  • Air Dryers and Filters: In sandblasting applications, it is crucial to have clean, dry air to prevent moisture and contaminants from affecting the abrasive blasting process and the quality of the surface being treated. Air compressors may be equipped with air dryers and filters to remove moisture, oil, and impurities from the compressed air.

When using air compressors for painting or sandblasting, it is important to consider factors such as the compressor’s pressure and volume output, the specific requirements of the application, and the type of tools or equipment being used. Consult the manufacturer’s guidelines and recommendations to ensure the air compressor is suitable for the intended painting or sandblasting tasks.

Proper safety measures, such as wearing protective gear and following established protocols, should always be followed when working with air compressors for painting and sandblasting applications.

air compressor

How are air compressors utilized in pneumatic tools?

Air compressors play a crucial role in powering and operating pneumatic tools. Here’s a detailed explanation of how air compressors are utilized in pneumatic tools:

Power Source:

Pneumatic tools rely on compressed air as their power source. The air compressor generates and stores compressed air, which is then delivered to the pneumatic tool through a hose or piping system. The compressed air provides the force necessary for the tool to perform various tasks.

Air Pressure Regulation:

Air compressors are equipped with pressure regulation systems to control the output pressure of the compressed air. Different pneumatic tools require different air pressure levels to operate optimally. The air compressor’s pressure regulator allows users to adjust the output pressure according to the specific requirements of the pneumatic tool being used.

Air Volume and Flow:

Air compressors provide a continuous supply of compressed air, ensuring a consistent air volume and flow rate for pneumatic tools. The air volume is typically measured in cubic feet per minute (CFM) and determines the tool’s performance capabilities. Higher CFM ratings indicate that the pneumatic tool can deliver more power and operate at a faster rate.

Tool Actuation:

Pneumatic tools utilize compressed air to actuate their mechanical components. For example, an air-powered impact wrench uses compressed air to drive the tool’s internal hammer mechanism, generating high torque for fastening or loosening bolts and nuts. Similarly, air-powered drills, sanders, nail guns, and spray guns rely on compressed air to power their respective operations.


One of the significant advantages of pneumatic tools is their versatility, and air compressors enable this flexibility. A single air compressor can power a wide range of pneumatic tools, eliminating the need for separate power sources for each tool. This makes pneumatic tools a popular choice in various industries, such as automotive, construction, manufacturing, and woodworking.


Air compressors come in different sizes and configurations, offering varying degrees of portability. Smaller portable air compressors are commonly used in applications where mobility is essential, such as construction sites or remote locations. The portability of air compressors allows pneumatic tools to be used in various work environments without the constraints of being tethered to a fixed power source.

Overall, air compressors are integral to the functionality and operation of pneumatic tools. They provide the necessary power, air pressure regulation, and continuous airflow required for pneumatic tools to perform a wide range of tasks efficiently and effectively.

air compressor

How do oil-lubricated and oil-free air compressors differ?

Oil-lubricated and oil-free air compressors differ in terms of their lubrication systems and the presence of oil in their operation. Here are the key differences:

Oil-Lubricated Air Compressors:

1. Lubrication: Oil-lubricated air compressors use oil for lubricating the moving parts, such as pistons, cylinders, and bearings. The oil forms a protective film that reduces friction and wear, enhancing the compressor’s efficiency and lifespan.

2. Performance: Oil-lubricated compressors are known for their smooth and quiet operation. The oil lubrication helps reduce noise levels and vibration, resulting in a more comfortable working environment.

3. Maintenance: These compressors require regular oil changes and maintenance to ensure the proper functioning of the lubrication system. The oil filter may need replacement, and the oil level should be regularly checked and topped up.

4. Applications: Oil-lubricated compressors are commonly used in applications that demand high air quality and continuous operation, such as industrial settings, workshops, and manufacturing facilities.

Oil-Free Air Compressors:

1. Lubrication: Oil-free air compressors do not use oil for lubrication. Instead, they utilize alternative materials, such as specialized coatings, self-lubricating materials, or water-based lubricants, to reduce friction and wear.

2. Performance: Oil-free compressors generally have a higher airflow capacity, making them suitable for applications where a large volume of compressed air is required. However, they may produce slightly more noise and vibration compared to oil-lubricated compressors.

3. Maintenance: Oil-free compressors typically require less maintenance compared to oil-lubricated ones. They do not need regular oil changes or oil filter replacements. However, it is still important to perform routine maintenance tasks such as air filter cleaning or replacement.

4. Applications: Oil-free compressors are commonly used in applications where air quality is crucial, such as medical and dental facilities, laboratories, electronics manufacturing, and painting applications. They are also favored for portable and consumer-grade compressors.

When selecting between oil-lubricated and oil-free air compressors, consider the specific requirements of your application, including air quality, noise levels, maintenance needs, and expected usage. It’s important to follow the manufacturer’s recommendations for maintenance and lubrication to ensure the optimal performance and longevity of the air compressor.

China high quality Roots Blower Gas Compressor for Air Delivery Gas Combustion   air compressor lowesChina high quality Roots Blower Gas Compressor for Air Delivery Gas Combustion   air compressor lowes
editor by CX 2024-04-11