Single screw and twin screw air compressor have their own advantages and disadvantages

Structural aspect: The twin-screw air compressor has few moving parts and simple structure. The rigidity of the male rotor is higher than that of the female rotor, but the male rotor also bears most of the load. The rigid load ratio of the male and female rotors is close, the deformation is uniform, and the volume coefficient is high. The single-screw air compressor has three rotating shafts, more moving parts are added, the structure is more complicated, the rigidity of the screw and the star wheel is large, and the deformation is uneven, so the accuracy of the gear is difficult to guarantee, and the volumetric efficiency is slightly lower.

Material: the rotor of the twin-screw air compressor is toothed motion, the instantaneous relative motion direction of the toothed belt is free of friction in the normal direction, there is no special requirement for materials, and ordinary materials and ordinary heat treatment can meet the needs.

In terms of volumetric efficiency: the single screw is slightly lower, the friction is deformed, the suction and exhaust channels are narrow, and the high and low cavities directly lose the headlights so that the efficiency is lower than the twin screw.

In terms of exhaust volume decline: there is no direct friction between the twin-screw rotor and the housing, the yin and yang rotors deform evenly, and the failure rate is extremely low. Single screw friction is relatively serious, the decline of the displacement is more serious.

Failure rate: double screw air compressor failure rate is low, there is no direct friction between the rotor and the rotor casing, the rotor deformation is uniform, the failure rate is very low. Single screw due to star wheel wear, uneven deformation and machining accuracy is not enough is the main cause of failure.

Life: twin screw life is only subject to bearing life, generally up to 60000 hours, single screw air compressor life is subject to star wheel life.