scroll vacuum pump mainly includes left stator, right stator, rotor, crankshaft, anti rotation mechanism, air inlet, exhaust port and other parts. The gas is compressed in the crescent cavity composed of a vortex stator and a vortex rotor. The vortex stator is fixed on the periphery of the frame, and an air inlet is arranged around the vortex stator, and an air outlet is arranged at the center of the rotor and the stator vortex body. With the rotation of the crankshaft, the vortex rotor takes the eccentricity as its radius and makes a revolution around the stator center. In addition, the vortex rotor is restrained by the anti autobiographical structure, so it can not autobiographically, and always maintains a fixed posture, in which the center moves around the center of the vortex stator in a circle with a radius of R.
When the scroll vacuum pump is running, the vortex lines of the two vortex stators and the vortex rotors are basically the same. As long as the phases of the two are staggered 180 ° and the centers of the two are kept together R, they can be combined. Results a series of crescent shaped compression cavities were formed between the two vortices. Every 90 ° rotation of the center of the vortex rotor makes a circular motion in a clockwise direction. After the suction, the compression chamber of the outer circumference of the vortex is in a closed state. Therefore, it can be assumed that the volume of the compressor chamber becomes smaller as it moves towards the center.
A compression chamber from the suction, compression, and finally exhaust the whole process. In order to reduce the weight of the pump scroll body, the base material is aluminum, and a layer of polytetrafluoroethylene with special performance is coated on the surface to increase the wear resistance and corrosion resistance. The pressure difference between the adjacent working chambers of the vortex body of the pump is small, so the gas leakage is small, the driving torque of the pump changes little, so the noise and vibration of the pump are low.
The pump is characterized by light weight, small volume and horizontal structure. It can be directly pumped to 10-1pa from atmospheric pressure. It is a dry vacuum pump with a wide range of use.
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