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Oil changing knowledge of water ring vacuum pump

The use of water ring vacuum pump oil:

Vacuum pump oil has the same function as ordinary lubricating oil, but the water content of vacuum pump is lower than that of ordinary lubricating oil, because the water evaporates back at high vacuum and occupies the pump displacement and the performance of vacuum pump decreases.

The main function of water ring vacuum pump oil :

In the process of using thermal conductive oil pump, because the vacuum pump oil directly into the pump chamber, when the vacuum pump runs, with the gas pressure gradually reduced, the pump temperature gradually increased. Molecular components with high saturated vapor pressure in oil products can evaporate into the vacuum space, which affects the reaching of the vacuum pump limit pressure, and can diffuse back to the vacuum system, causing pollution.

Vacuum pump oil.jpg

Matters needing attention in replacing vacuum pump oil with water ring vacuum pump:

First, vacuum pump oil change operation:


1. Remove the water ring vacuum pump from the vacuum system, pad one end of the chassis motor higher, open the oil discharge plug, rotate the vacuum pump, cover the exhaust port, so that all the dirty oil in the cavity is discharged from the oil outlet, and then add 100-500 ml of new oil into the air inlet to continuously rotate more than 5-10 revolutions, internal cleaning, according to this operation 3-5 times, special dirty oil After discharging, install the oil stopper, level the pump, add new oil from the inlet and the filling hole respectively, and the oil change is finished.


2, when changing the oil, it is not suitable to start the motor for a long time, so as not to cause the exhaust valve to jump too violently and fatigue.


Two, change the vacuum pump oil should pay attention:


1, the use of regular manufacturers to provide vacuum pump special oil.

2, strictly prohibit the use of media oil, gasoline, alcohol and other water ring vacuum pump for non demolition cleaning.

3. The best oil temperature of the water ring vacuum pump is raised.

2BV water ring vacuum pump.jpg


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