Operating principle and characteristics:
The series HGL, HG pump can be a form of single-stage and single-cylinder rotary piston vacuum pump. It is actually enormously enhanced series H rotary piston pump and consists of 4 patents; its common capabilities possess a good improvement.
Rotary piston vacuum pump is really a type of vacuum manufacturing equipment suitable for pumping ordinary gases and condensable gases(whenever a fuel ballast employed). The pump has to be fitted with ideal accessories if gasoline is wealthy in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle display in doing work principle graph: A rotary piston with slide valve across ecentric wheel driven by shaft inside 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 changed repetitively, in order that pumping function may very well be achieved.
The series HGL, HG pump is usually a backing pump when combined with a further high vacuum pump also as operate singly. It’s extensively utilized in vacuum smelting, vacuum drying, vacuum impregnation and high vacuum simulation testing,etc.
ROTARY PISTON VACUUM PUMPS
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