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Sliding valve vacuum pump is mainly used to change the valve body to the West cavity volume, which is called Huafa pump. "Although the slide valve vacuum pump is an old pump, compared with rotary vane pumps , it has outstanding features such as high working pressure (10 4 pa), large pumping capacity, continuous operation in harsh environments and durability, So in vacuum smelting, vacuum drying, vacuum impregnation, vacuum distillation and other industries have been widely used.
At present, the oil-sealed vacuum pumps widely used in the vacuum industry are mostly medium-sized and small-sized selection pumps and medium and large-sized slide valve vacuum pumps. Rotary vane pump In dirty working conditions, the vane pump stuck in the rotor slot. Although the spool-type vacuum pump to overcome this shortcoming to some extent, but the center of the spool relative to the center of rotation distance is not a fixed value, although some structural measures taken to balance, but not yet fully balanced, so the vibration is difficult to complete eliminate. 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.
Sliding valve vacuum pump works
Sliding valve vacuum pump pumping principle is actually similar with the pump, when the pump structure of the two different time.