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Working principle of screw air compressor
Classification: Technical Data
Classification: Principles of Engineering
Time：2017-09-27 08:43
Air compressor is one of the necessary power equipment for many enterprises, and screw air compressor is the mainstream product in the air compressor market today. For the air compressor, the most important function is to produce gas, so that the air is compressed with pressure. The working principle of screw air compressor is mainly divided into three major processes: suction, compression and exhaust. The inspiratory process. The screw-type intake-side intake port must be designed so that the compression chamber can fully inhale. The screw air compressor does not have an intake and exhaust valve set. The intake is only adjusted by the opening and closing of a regulating valve. When the rotor rotates, the tooth groove space of the main and auxiliary rotors is turned to the opening of the intake end wall. Its space is the largest,
Air compressor is one of the necessary power equipment for many enterprises, and screw air compressor is the mainstream product in the air compressor market today. For the air compressor, the most important function is to produce gas, so that the air is compressed with pressure. The working principle of screw air compressor is mainly divided into three major processes: suction, compression and exhaust.
The inspiratory process. The screw-type intake-side intake port must be designed so that the compression chamber can fully inhale. The screw air compressor does not have an intake and exhaust valve group. The intake is only adjusted by the opening and closing of a regulating valve. When the rotor rotates, the tooth groove space of the main and auxiliary rotors is turned to the opening of the intake end wall. The space is the largest. At this time, the tooth groove space of the rotor is the same as the free air in the air inlet, because the air in the tooth groove is fully removed during exhaust.
When the exhaust is finished, the tooth groove is in a vacuum state. When it turns to the air inlet, the outside air is sucked in and flows into the tooth groove of the main and auxiliary rotors along the axial direction. When the air fills the entire tooth groove, the intake side end surface of the rotor turns away from the air inlet of the casing, and the air between the tooth grooves is closed.
compression process. In the process of gas transportation, the meshing surface gradually moves to the exhaust end, that is, the tooth groove between the meshing surface and the exhaust port gradually decreases, the gas in the tooth groove is gradually compressed, and the pressure increases, which is the compression process.
Exhaust process: When the meshing end surface of the rotor turns to communicate with the casing exhaust, the compressed gas starts to be discharged until the meshing surface of the tooth peak and the tooth groove moves to the exhaust end surface. At this time, the two rotor meshing surfaces and The tooth groove space of the casing exhaust port is zero, that is, the exhaust process is completed.