Operating principle and functions:
The series HGL, HG pump is usually a type of single-stage and single-cylinder rotary piston vacuum pump. It truly is tremendously enhanced series H rotary piston pump and involves four patents; its basic capabilities possess a terrific improvement.
Rotary piston vacuum pump is a kind of vacuum manufacturing equipment ideal for pumping ordinary gases and condensable gases(when a gasoline ballast employed). The pump must be fitted with appropriate equipment if gas is rich in oxygen, explosive, corrosive to ferrous metal, chemical reactive with 
vacuum pump oil.
Operation principle display in working principle graph: A rotary piston with slide valve across ecentric wheel driven by shaft in the housing. Piston pole can slide and swing freely in arch track. The entire pump chamber is divided into chamber A and chamber B by piston. When shaft rotates the volume of chamber A and chamber B are transformed repetitively, to ensure pumping function could possibly be accomplished.
The series HGL, HG pump is often a backing pump when combined with one more large vacuum pump likewise as operate singly. It is actually broadly utilized in vacuum smelting, vacuum drying, vacuum impregnation and higher vacuum simulation testing,and so on.
ROTARY PISTON VACUUM PUMPS
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