Common twin-screw air compressor workflow structure

Screw air compressor is a single-stage oil-injected twin-screw compressor. It adopts high-efficiency pulley drive to drive the main engine to rotate for air compression. The compressed air in the main engine is cooled by oil injection. The air and oil mixed gas discharged from the main engine are separated by coarse and fine channels to separate the oil in the compressed air, and finally clean compressed air is obtained. The cooler is used to cool the compressed air and oil.

Screw compressor is one of the positive displacement compressors. The compression of air is achieved by the volume change of the cogging grooves of the male and female rotors that are parallel to each other in the casing. The rotor pair rotates in the casing that is precisely matched with it, so that the gas between the rotor slots continuously produces periodic volume changes and pushes from the suction side to the discharge side along the rotor axis, completing the suction, compression, and exhaust Three working processes.

The structure and working process of 1. screw compressor:

1. Basic structure:

this series of screw compressor unit is mainly composed of compressor, motor, transmission mechanism, cooling system, control system and cover. The compressor is driven by the motor through the pulley of the male rotor, because the male rotor and the female rotor mesh with each other, the male rotor directly drives the female rotor to rotate together. The ratio of the number of teeth of the male and female rotors is 5:6. Both ends of each rotor shaft is equipped with high-precision bearings, so as to ensure that the rotor and the casing, male and female rotor has a small gap between, so the compressor can always maintain high efficiency and long-term operation reliability, fully shows the characteristics of high operating rate of screw compressor.

2. Screw compressor working process:

after the atmosphere filters out dust or impurities through the intake filter, it enters the suction cogging volume cavity of the compressor through the intake control valve. With the meshing movement of the male and female rotors, the air in the cogging volume cavity is gradually compressed. When the air is compressed to a specified pressure, the compressed air is discharged from a specific exhaust port, and then flows through the oil and gas separation tank. At this time, the compressed and discharged oil-containing gas passes through collision, interception, the vast majority of the oil medium is separated, and then enters the oil and gas separation core for secondary separation to obtain compressed air with little oil content, and finally cooled by the air cooler for the user to use. The compressor host carries out 5 working cycles per revolution, so the working pressure fluctuation of compressed air is small and the pressure is stable. Therefore, if the working place is limited by conditions, it can be directly connected without air storage tank.