Water lubricated oil-free air compressor adopts a single screw solution and ordinary screw air compressors generally use twin screw oil lubricating characteristics for detailed description:
1. Working principle and lubrication method
| Type |
Working principle |
Luction method |
| Oil-free air compressor (water lubricated oil-free air compressor) |
Using a single screw solution, through the rotational movement of the single screw, forming a meshing pair with the symmetrically arranged plane star wheels to achieve air compression. During the compression process, the water lubrication system reduces friction and cools the compressor by injecting a proper amount of water into the compression chamber to form a water film. |
Use water lubrication without using lubricating oil. Water lubrication not only reduces friction and heat, but also ensures that the compressed air is pure and oil-free. |
| Ordinary screw air compressor |
adopts a twin-screw oil lubrication scheme to achieve gas compression by rotating two inter-meshing screw rotors. During the compression process, lubricating oil is needed to maintain the normal operation and sealing effect of the screw. |
Use oil lubrication, that is, use lubricating oil during the compression process to reduce friction and cool the compressor. |
2. Compressed air quality
| Type |
Compressed air quality |
| Oil-free air compressor (water lubricated oil-free air compressor) |
Because the water lubricating system is used, the use of oil is completely avoided, so pure and oil-free compressed air can be generated. This is crucial for industries with extremely high requirements for air quality, such as medical, food, pharmaceuticals, semiconductors, etc. |
| Ordinary screw air compressors |
Lull oil is used for lubrication. Although the oil content can be greatly reduced through an efficient oil-gas separator, in some occasions where air purity is extremely high, compressed air may still contain trace amounts of oil. |
III. Maintenance and maintenance
| Type |
Maintenance and maintenance |
| Oil-free air compressor (water lubricated oil-free air compressor) |
As there is no need to use lubricating oil, avoidIt avoids the oxidation and corrosion of oil, and maintenance is relatively simple. Main maintenance work includes regular cleaning of lubrication systems and replacement of filter elements to ensure the normal operation of the equipment. |
| Ordinary screw air compressors |
require regular replacement of lubricating oil and filters to ensure the normal operation of the equipment and extend the service life. Maintenance is relatively complex and has high maintenance costs. |
IV. Noise and environmental protection
| Types |
Noise and environmental protection |
| Oil-free air compressors (water lubricated oil-free air compressors) |
Often levels are usually low because water lubricating systems help reduce mechanical friction and vibration. In addition, since lubricating oil is not required, the oil stains and odors are avoided and the environment is more environmentally friendly. |
| Ordinary screw air compressor |
Noise levels may be relatively high, especially when operating at high loads. At the same time, the use and treatment of lubricating oil may have a certain impact on the environment. |
5. Applicable fields
| Type |
Applicable fields |
Oil-free air compressor (water lubricated oil-free air compressor) |
Widely used in industries such as medical, food, pharmaceuticals, semiconductors, etc. that have extremely high requirements for air quality. At the same time, due to its low noise, low maintenance cost and environmental friendliness, it is also suitable for occasions with high requirements for the working environment. |
| Ordinary screw air compressor |
Because of its efficient and stable characteristics, it is widely used in various industrial fields, such as mechanical manufacturing, chemical industry, textiles, etc. However, in certain situations where air quality is extremely demanding, additional air treatment equipment may be required to ensure the purity of the compressed air. |
6. Summary
The difference between oil-free air compressor and screw air compressor is mainly reflected in the working principle and lubrication method, compressed air quality, maintenance and maintenance, noise and environmental protection, and applicable areas. Water-lubricated oil-free air compressors adopt single screw solution and water-lubricating system to produce pure oil-free compressed air, which is suitable for industries with extremely high requirements for air quality; while ordinary screw air compressors adopt twin screw oil lubricating scheme, althoughIt has high compression efficiency and stability, but may not be applicable in some occasions where there are extremely high requirements for air purity. When choosing an air compressor, comprehensive consideration should be made based on the specific application scenarios and needs.
