What is the difference between water lubrication oil-free screw air compressors and dry oil-free ones?

2024-02-21

Water lubricated oil-free screw air compressor and dry oil-free screw air compressor are two common types of oil-free screw air compressor, and they have some differences in working principle, maintenance mode and application field.

Firstly, the water-lubricated oil-free screw air compressor uses pure water as the lubrication and cooling medium, and the lubrication effect is achieved by spraying water on the screw blades. This water lubrication method can maintain good lubrication performance and reduce the temperature of the machine through the cooling effect of water. In contrast, the dry oil-free screw air compressor adopts air cooling mode, and no additional lubricant is needed during operation.

Secondly, for water-lubricated oil-free screw air compressor, the motor system is usually water-cooled, which can not only effectively reduce noise, but also provide better heat dissipation effect. The dry oil-free screw air compressor is driven by permanent magnet variable frequency motor, which has the advantage of long service life and can reduce the operating cost of the equipment.

In addition, the water-lubricated oil-free screw air compressor uses pure water in the lubrication process, so it will not produce any pollutants and provide very clean compressed air. It usually has the characteristics of high efficiency and low noise, and is very suitable for industries that require high quality of compressed air. The dry oil-free screw air compressor can reduce the use of lubricant, reduce the maintenance cost, and provide a stable and reliable working environment because of its low failure rate.

To sum up, there are some differences between water-lubricated oil-free screw air compressor and dry oil-free screw air compressor in lubrication mode, motor system and air source quality. Choosing the appropriate type depends on the specific application requirements and industry requirements to ensure efficient, reliable and standard compressed air supply.

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