How to remove the root cause of the rotary vane vacuum pump noise
Shanghai Yanhu Vacuum Pump Factory
During the operation of the rotary vane vacuum pump, due to various reasons, it will produce pleasant noise and noise, which not only hinders the thinking of the staff, but also affects people's health. In the end, where will the noise come from?
The reasons for this are:
The spring breaks and the impact of the rotary vane during operation.
Improper assembly, the friction sound when the rotor is running; the rotating piece slams out from the end face and then jumps out from the retracted rotor position and the impact sound of the rotary vane vacuum pump chamber.
The parts have burrs, the rotary vane vacuum pump chamber falls into the foreign object or the rotary vane vacuum pump chamber deforms to make the noise generated by the operation obstacle.
Poor lubrication in the cavity of the rotary vane vacuum pump, dry grinding noise emitted; harmful space is too large, noise generated by the rotary vane vacuum pump itself; lack of oil in the motor bearing, dry grinding noise generated. All of this will cause the rotary vane vacuum pump to produce sounds that are sometimes intolerable.
The inherent noise generated by the manufacture of the rotary vane vacuum pump is not irreparable. Some masters dig some of the venting holes and slightly expand the holes to reduce the noise; some masters offset the middle partition of the middle diaphragm type rotary vane vacuum pump by a few millimeters to reduce harmful space and thus reduce noise. .
In short, only to find the fault, it is possible to eliminate the problem of excessive noise, but it must not be allowed, because a rotary vane vacuum pump may soon turn into a serious story after a sudden noise problem.
For example, due to improper assembly, the plane of the end cover is not perpendicular to the axial direction of the cavity. After opening the end cover, it can be seen that the end cover is ground with a half arc, indicating that the rotary piece is squeezed when passing through this part. It is very powerful, and can not be in normal contact with the rotary vane vacuum pump chamber. When the rotary vane is strongly pushed through this part, it jumps out suddenly, and a periodic impact sound occurs when it collides with the rotary vane vacuum pump chamber. They should all be taken to eliminate them. For this problem, the end face of the cavity can be corrected to be perpendicular to the axial direction of the cavity, and the scratches on the end cover can be worn away, and then the matching gap between the rotary vane vacuum pump chamber, the rotor and the rotary vane can be adjusted. And adjust the telescopic performance of the rotary vane spring to eliminate this fault
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