2026-04-10Views：
Water-lubricated oil-free screw air compressor is a special type of air compressor, its main feature is the use of water as a lubricant, and completely without the use of oil. The following is a detailed introduction of water lubricated oil free screw air compressor:
working principle:
compression process: When the screw type host starts, the screw rotor starts to rotate, sucking air into the host. As the screw rotor rotates, the air is compressed and gradually warmed. In this process, water lubrication technology is introduced, and water is injected into the main engine through the water lubrication system to cool and lubricate the screw rotor.
Cooling process: As the temperature of the air will gradually increase during the compression process, in order to ensure the quality and stability of the compressed air, the water-lubricated oil-free screw air compressor adopts water-cooling technology, and the cooling water is injected into the host through the cooling water circulation system. High temperature air is cooled.
Filtration process: In order to ensure the purity of the compressed air, this type of air compressor is also equipped with a filtration system to intercept and remove impurities and particles in the air.
Exhaust process: The compressed, cooled and filtered air is discharged from the main engine and enters the aftertreatment system.
Advantages:
energy saving and environmental protection: Due to the use of water lubrication technology, no oil is required, thereby reducing environmental pollution.
Long life and low maintenance cost: Water lubrication reduces the wear of mechanical parts, prolongs the service life of equipment, and reduces maintenance costs.
Compact structure and small footprint: make the equipment more suitable for limited space environment.
Stable and reliable performance: The water lubrication and cooling system ensure the stable operation of the air compressor.
Disadvantages:
higher price: Due to the use of advanced technology and materials, the price of water-lubricated oil-free screw air compressors is usually higher.
High requirements for the use environment: it is necessary to ensure the cleanliness of the water quality and the environment to prevent damage to the equipment.
Must be equipped with a cooler: In order to ensure the normal operation of the equipment and extend the service life, an effective cooling system must be equipped.
Application areas:
water-lubricated oil-free screw air compressors are widely used in many fields, including but not limited to the medical industry (such as breathing machines, anesthesia machines, etc.), food and beverage industry (to avoid oil contamination of food), electronics industry (high quality requirements for compressed air), pharmaceutical industry (to ensure the quality and safety of drugs) and chemical industry (to prevent chemical reactions from oil).
The water content of the gas blown by the oil-free air compressor is a common problem, which is mainly caused by the condensation of water vapor caused by the increase of air temperature during the compression process, and the insufficient or improper maintenance of the post-processing equipment. The following is a systematic solution, covering cause analysis, treatment steps and prevention.
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