Solenoid valve, check valve and pneumatic valve details

The function of the solenoid valve of the rotary vane pump: first, the power is cut off suddenly to prevent the gas from not returning, it will be stuck in time. Second, to prevent oil spray protection equipment.

The function of water ring pump check valve: check valve is also called one-way valve or reverse check valve, its function is to prevent the medium backflow in the pipeline. Pump suction shutoff bottom valve also belongs to check valves. The backflow of the medium will cause the pump impeller to reverse, which may cause the pump to burn down, and the check valve just protects the pump and the pipeline.

The 2XZ rotary vane vacuum pump is equipped with a pneumatic valve, which can prolong the service time of pump oil and prevent the mixing of pump oil with water. If vacuum pump out only permanent gases, gas liquefaction due to the increase of the pressure, then there is no pump oil degradation, but if you want to use the pump to the vacuum dry or moist air out, is not only have a permanent gases and water vapor in the gas, if this part use without gas ballast pumps steam, steam will be liquefied and dissolved in oil, the vacuum properties of oil degradation, thus reduces the pumping speed of pump and the vacuum degree.

Two it is to restore the limit of the vacuum pump pressure, although sometimes we used to take out general air, containing less of condensable gases, general gas ballast valve is closed, but when the time is long, oily but was polluted by some small amount of condensable gases in the atmosphere, for no gas ballast institutions pump, only change new oil, or the heat oil pump, let the liquefied steam evaporation can restore the limit pressure of pump original for gas ballast pump, open as long as 1 to 2 hours can restore the limit pressure of vacuum pump.