Operating principle and functions:
The series HGL, HG pump is a sort of single-stage and single-cylinder rotary piston vacuum pump. It really is significantly improved series H rotary piston pump and involves four patents; its common capabilities possess a fantastic improvement.
Rotary piston vacuum pump is often a type of vacuum production products suitable for pumping ordinary gases and condensable gases(whenever a gas ballast utilised). The pump should be fitted with suitable accessories if gasoline is rich in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle demonstrate in operating 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, so that pumping purpose could possibly be attained.
The series HGL, HG pump is often a backing pump when combined with an additional high vacuum pump at the same time as operate singly. It is actually widely utilized in vacuum smelting, vacuum drying, vacuum impregnation and high vacuum simulation testing,and so forth.
ROTARY PISTON VACUUM PUMPS
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