Operating principle and functions:
The series HGL, HG pump is 
actually a type of single-stage and single-cylinder rotary piston vacuum pump. It can be greatly enhanced series H rotary piston pump and contains four patents; its common abilities have a fantastic improvement.
Rotary piston vacuum pump can be a kind of vacuum production gear ideal for pumping ordinary gases and condensable gases(whenever a gasoline ballast utilised). The pump needs to be fitted with proper equipment if gasoline is wealthy in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle show in functioning principle graph: A rotary piston with slide valve across ecentric wheel driven by shaft within the housing. Piston pole can slide and swing freely in arch track. The whole pump chamber is divided into chamber A and chamber B by piston. When shaft rotates the volume of chamber A and chamber B are altered repetitively, in order that pumping objective may very well be accomplished.
The series HGL, HG pump might be a backing pump when mixed with a different substantial vacuum pump also as operate singly. It truly is broadly utilized in vacuum smelting, vacuum drying, vacuum impregnation and substantial vacuum simulation testing,and so on.
