Operating principle and characteristics:
The series HGL, HG pump is often a kind of single-stage and single-cylinder rotary piston vacuum pump. It truly is enormously enhanced series H rotary piston pump and includes four patents; its basic capabilities have a fantastic improvement.
Rotary piston vacuum pump can be a kind of vacuum manufacturing tools ideal for pumping ordinary gases and condensable gases(whenever a fuel ballast used). The pump has to be fitted with proper equipment if fuel is rich in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle present 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 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 modified repetitively, to ensure pumping purpose might be achieved.
The series HGL, HG pump is often a backing pump when mixed with one more large vacuum pump at the same time as operate singly. It really is widely used in vacuum smelting, vacuum drying, 
vacuum impregnation and substantial vacuum simulation testing,and so on.
