Many problems of vacuum pump have nothing to do with regional problems. For example, the use of vacuum pump in Shandong Province is not different from that in other places. Many problems occur by chance. For example, the leakage of vacuum pump is an internal problem. So we should put aside our thoughts and put aside the fog of problems.

1. The vacuum pump is not tightly sealed

Tighten all the connecting bolts, tighten the packing gland, and tightly wrap the pipe and instrument connection with other parts. Or replace the gasket and packing. For air leakage, oil lime can also be coated as temporary remedial measures.

2. Bearing skew

This phenomenon makes the impeller inclined in the pump body. For single acting pump, its axial clearance is uneven. When Ye Yan rotates, part of it will rub with the side cover, scratch the side cover and impeller end face, so that the axial clearance increases. When the compressed cavity passes through the increased gap, a large amount of gas will leak into the suction chamber, which will reduce the vacuum degree 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 different axial degrees, and the consequences are the same as those of bearing skewness.

4. Vacuum pump heating

When the temperature of vacuum pump increases, the saturated vapor pressure will also increase, which will reduce the vacuum degree, but this has no effect on the exhaust pressure.

If our use of vacuum pump in such cases, can be compared with the above analysis, should be able to help you quickly solve the problem.