Oil-injected screw air compressors have become the new mainstream of today's air compressor development. They have superior and reliable performance, low vibration, low noise, high efficiency, and no parts. The precise matching between the yin and yang rotors and between the rotors and the body shell reduces backflow leakage and improves efficiency; only the rotors mesh with each other, without the movement of the cylinder, reducing the source of vibration and noise; the unique lubrication method brings many advantages:
Feature 1 of oil-injected screw air compressors: Relying on the pressure difference generated by itself, it continuously injects lubricant into the compression chamber and bearings, simplifying the complex mechanical structure.
Feature 2 of oil-injected screw air compressors: The injected lubricant can form an oil film between the rotors, which has a lubricating and cooling effect on the equipment. The auxiliary rotor can be directly driven by the main rotor without the help of high-precision synchronous gears.
Feature 3 of oil-injected screw air compressors: The injected lubricant can increase the airtightness. It is used to improve the failure rate of air compressors. From the perspective of energy saving, the energy efficiency of oil-injected air compressors will never be higher than that of sleeveless air compressors.
Feature 4 of oil-injected screw compressor: Lubricating oil can reduce the noise caused by high-frequency compression.
Feature 5 of oil-injected screw compressor: During the use of the air compressor, the oil supply is in a mist form and mixed with the high-temperature compressed gas. The lubricating oil is repeatedly heated and cooled at a very high circulation speed. The water vapor and corrosive gas in the air accelerate the oxidation and deterioration of the oil. Because of the use of synthetic lubricating oil, it can not only absorb a large amount of compression heat. And the exhaust will not be too high, and there will be no difference between the rotor and the casing due to the different thermal expansion coefficients.
Feature 6 of oil-injected screw compressor: The oil and gas in the compressed air will cause a lot of trouble in use. Even after the filter treatment, it cannot reach the state of being completely oil-free. Although the original efficiency of the oil-injected air compressor is higher, the precision filter will generate additional pressure loss set by the purchase and replacement cost.