Screw vacuum pump will be affected by air leakage in the process of use. Many users think that this is a quality problem of the equipment, which has been replaced by new equipment. However, the cause of air leakage is not only the quality problem, but also the front and rear covers are different? In other words, the front and rear covers of the screw vacuum pump have different axial degrees, and the result is the same as the bearing deflection.
With the increase of the liquid ring temperature, the saturated vapor pressure also increases, which reduces the vacuum degree of the screw vacuum pump, but has no effect on the exhaust pressure? Tighten the connecting bolts and stuffing box of the screw vacuum pump, tighten the connection between the pipeline, instrument and other parts, or replace the gasket and stuffing.
For the leakage of the screw vacuum pump, putty can also be used as a temporary remedy to make the bearing deflect, so that the impeller inclines and is installed in the pump body of the screw vacuum pump. The axial clearance of single acting pump is uneven. When the impeller rotates, the side cover must have certain friction, and the side cover and the impeller end face will be scratched.
When the gas in the compression chamber passes through the increased gap, the axial gap increases, and a large amount of gas leaks into the suction chamber, thus reducing the vacuum pressure or discharge pressure of the screw vacuum pump. At this time, the bearing of screw vacuum pump must be removed for maintenance, and then installed correctly. Screw vacuum pump is a kind of pump device, which completes the suction and exhaust work produced by synchronous high-speed reverse rotation in the pump shell.
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