The structure principle of OPPAIR screw air compressor
The OPPAIR screw compressor is a positive displacement gas compression machine with a working volume for rotary motion. The compression of the gas is realized by the change of the volume, and the change of the volume is achieved by the rotary motion of the pair of rotors of the compressor in the casing.
The basic structure of the screw air compressor: in the body of the compressor, a pair of helical rotors meshing with each other are arranged in parallel. Usually, the rotor with convex teeth outside the pitch circle is called the male rotor or the male screw. The rotor with concave teeth in the pitch circle is called a female rotor or a female screw. Generally, the male rotor is connected to the prime mover, and the male rotor drives the female rotor to rotate the last pair of bearings on the rotor to achieve axial positioning and withstand the compressor. the axial force. Cylindrical roller bearings at both ends of the rotor enable radial positioning of the rotor and withstand radial forces in the compressor. At both ends of the compressor body, openings of a certain shape and size are respectively opened. One is for suction, called the intake port; the other is for exhaust, called the exhaust port.
Intake
The air intake process of the detailed analysis of the working process of the OPPAIR screw air compressor: when the rotor rotates, the groove space of the yin and yang rotors is the largest when it turns to the opening of the air inlet end wall. At this time, the groove space of the rotor is connected with the air inlet. , Because the gas in the tooth groove is completely discharged when the exhaust is completed, the tooth groove is in a vacuum state when the exhaust is completed, and when it is turned to the air inlet, the outside air is sucked in and enters the tooth groove of the yin and yang rotor along the axial direction. When the gas fills the entire tooth groove, the end face of the rotor inlet side turns away from the air inlet of the casing, and the gas in the tooth groove is closed.
Compression
The compression process of the detailed analysis of the working process of the OPPAIR screw air compressor: when the yin and yang rotors are in the end of suction, the yin and yang rotor tooth tips will be closed with the casing, and the gas will no longer flow out of the tooth groove. Its engaging surface gradually moves toward the exhaust end. The tooth groove space between the meshing surface and the exhaust port is gradually reduced, and the gas in the tooth groove is increased by the compression pressure.
Exhaust
The exhaust process of the detailed analysis of the working process of the OPPAIR screw air compressor: when the meshing end face of the rotor turns to communicate with the exhaust port of the casing, the compressed gas starts to be discharged, until the meshing surface between the tooth tip and the tooth groove moves to the exhaust At the end face, at this time, the tooth groove space between the meshing surface of the yin and yang rotor and the exhaust port of the casing is 0, that is, the exhaust process is completed, and at the same time, the length of the groove between the meshing surface of the rotor and the air inlet of the casing reaches the maximum. long, the intake process is carried out again.
