Working principle and features:
The series HGL, HG pump is actually a kind of single-stage and single-cylinder rotary piston vacuum pump. It’s considerably enhanced series H rotary piston pump and contains four patents; its basic abilities have a wonderful improvement.
Rotary piston vacuum pump is a sort of vacuum production gear appropriate for pumping ordinary gases and condensable gases(whenever a gas ballast used). The pump should be fitted with proper add-ons if fuel is rich in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle present in doing work 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 changed repetitively, in order that pumping function may very well be attained.
The series HGL, HG pump is usually a backing pump when mixed with yet another large vacuum pump as well as operate singly. It really is extensively utilized in vacuum smelting, vacuum drying, vacuum impregnation and substantial vacuum simulation testing,and so forth.


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