Performance analysis of rotary vane vacuum pump

As anyone who knows about the central vacuum pump will know, the reason why the rotary vane vacuum pump has a high vacuum degree is that the clearance between the rotary vane and the rotor is very accurate. If the rotary vane is worn, it will definitely have a great impact on the performance of the rotary vane vacuum pump.
The performance of rotary vane vacuum pump is better, uniform pumping, low noise, less power consumption. However, after long time use, due to the wear of the rotary blade, the sealing performance will decline, so that the amount of air and vacuum will be greatly reduced. What is the cause of wear and tear?
(1) vacuum pump into the dirty or hard solid particles, a long time with the rotary disc friction collision, resulting in the damage of the rotary disc;
(2) in addition to the above reasons, the normal wear of the spiral is also a very important reason, when the vacuum pump oil emulsification will increase the wear of the spiral;
How to repair the worn rotor and improve the vacuum degree?
(1) after the rotation of the larger wear, if the processing capacity, it is best to change the new, because the new rotary plate to be more convenient than grinding pump cavity end face.
(2) if the spiral wear the most calendar harm, so it is measured by the minimum size of the spiral first correct spiral. The fine file can be used to wrap the yarn paper and push it flat, measure the size and square while grinding, until you can't see the bright gap. If the rotary blade wear too much, first on the grinder, and then according to the selected gap value to scrape, grinding rotor and pump chamber at both ends, to ensure that the three with the gap.

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