"Sliding valve vacuum pump suction principle and the pump similar, when the two structures are different .Slide valve vacuum pump is the use of slide valve body to change the volume of the West Chamber, it said Huafa pump." Huafa pump is an old Pump, but compared with the rotary vane pump, it has to allow high working pressure (104pa), pumping capacity, can work continuously in harsh environments, outstanding features such as durability, so the vacuum smelting, vacuum drying, vacuum impregnation, vacuum Distillation and other industries have been widely used. Currently widely used in the vacuum industry, oil-sealed vacuum pumps are mostly medium and small selection pump and medium and large Huafa pump. Rotary vane pump In dirty working conditions, the vane pump stuck in the rotor slot. Although Huafa Pump overcomes this shortcoming to a certain extent, the distance between the center of mass of the slide valve and the center of rotation is not constant. Although some balance measures have been taken in the structure, the complete balance can not be achieved and the vibration can not be completely eliminated. In particular, the greater the capacity of the pump, the vibration is greater. At the same time, the above two pumps, especially the spool pump, have a larger external dimension compared with their displacement.
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