Power on the selection of rotary vane vacuum pumps - five points

rotary vane vacuum pumps are mainly used for low vacuum degree. It can be divided into the oil seal and dry pump. According to the required degree of vacuum, also can be divided into single-stage and two-stage pump ( More commonly used) 。 Rotor of the rotary vane vacuum pump is mainly composed of pump body, turntable, end cover and spring and other parts. In the cavity of the rotary vane vacuum pump, a rotor, rotor outer edge and the inner surface of the cavity and tangent, two screws with spring plate installed in the groove of the rotor eccentricity. When the operation of the rotor, the rotor can be along its radial slot reciprocating sliding, and always contact with the inner surface of the pump housing. Rotor and rotor rotating together, thus will the vacuum pump cavity space into multiple variable volume.

when using rotary vane vacuum pumps, we should pay attention to the following

1. Before using rotary vane vacuum pumps, must maintain the cleanness of pump, so as not to have stuff in the pump body to enter. Check the oil amount, and infuse into the center of the oil mark. If too low, exhaust valve will not be able to have the effect of oil seal, and will affect the vacuum degree of vacuum pump. If too high, fuel injection reaction will occur. Vacuum pump is running, there will be a normal oil increase reaction. Brands use in vacuum water pump oil, cleaning and vacuum pump oil. After the oil injection hole is filled, dealing with the oil hole filtering and congestion, there were other impurities into in order to prevent the vacuum pump oil storehouse.

2。 When rotary vane vacuum pump working environment temperature is too high, rotary vane vacuum water pump oil temperature will rise. This is because heat molecules move faster, oil viscosity, lead to larger saturated vapor pressure, and ultimately achieve a lower ultimate vacuum. Vacuum pump manufacturers of technical personnel, points out that in order to improve the vacuum degree of vacuum pump, can increase wind, improve the quality of the vacuum pump oil, the reducing temperature, speed up heat dissipation.

3。 In the process of using the operation of the rotary vane vacuum pump, an extract of oxygen content should not be too high, too high content of water vapor, flammable and explosive gases, for metal corrosive substances. Some material is not stable, will react with the vacuum pump oil. The gas should not be extracted.

4。 If install the solenoid valve on the pump port, is under the atmospheric pressure or any vacuum next boot, you can start with the pump running pump at the same time.

5。 During the normal operation of the rotary vane vacuum pump, pump running after, rotary vane vacuum pump inlet and pump container is linked together, and through the slow rotation three-way valve air isolation with the outside world.