There are many reasons for this, and Bian Xiao introduced several important situations.
1, different brands of vacuum pump oil, because the saturated vapor pressure in different brands of oil is different, so the consequences are different.
Treatment method: according to the model and specification of the product, replace the accurate new vacuum pump oil.
2. The temperature of the pumped gas may be too high.
Treatment method: reduce the temperature of the extracted gas or increase the corresponding heat exchanger.
3. The oil circuit in the pump may be blocked, and the pump cavity cannot keep a certain amount of oil.
Treatment: check whether the oil circuit can be unblocked and add the same type of vacuum pump oil.
4. In addition, it is also due to the low vacuum degree formed by the vacuum pump oil, that is, the vacuum pump oil is emulsified and discolored, which may be too dirty.
Treatment method: clean all vacuum pump oil in the pump, replace the same type of vacuum pump oil, and treat the water vapor and impurities in the pumped gas.
Get in the pump.
5. The fit clearance is increased. This is because the temporarily pumped gas contains dust and the like. This causes the gap between rotor and stator to increase after wear.
Solution: Check whether the gap is too large and replace it with new parts.