How should vacuum pump leak?

For you to answer the vacuum pump leakage how to do.
1 vacuum pump seal is not tight
Tighten all the connecting bolts, tighten the packing gland, tightly wrap the pipes and connect the meters to other components. Or replace the gasket and packing. For air leakage, oil and lime can also be used as temporary remedial measures.
2 bearing deflection
This phenomenon causes the impeller to be tilted in the pump body. For a single acting pump, its axial clearance is uneven. When the blade is rotating, some part will be rubbed against the side cover, and the side cover and impeller end face will be scratching, so that the axial clearance will increase. The compressed cavity gas is leaked into the suction chamber through the enlarged gap, reducing the vacuum or exhaust pressure. At this time, the bearing should be removed for repair, and then installed correctly.
3 the front and rear side covers are not concentric
It is possible that the front and rear side covers of the vacuum pump have larger axial degrees and the consequence is the same as that of the bearing.
4 vacuum pump heating
When the vacuum pump temperature rises, the saturated vapor pressure will also increase, what's more, it will reduce the vacuum degree, but this has no effect on the exhaust pressure.
If we use vacuum pumps, we can analyze the above situation and see what is wrong with us.

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