Operating principle and features:
The series HGL, HG pump is usually a type of single-stage and single-cylinder rotary piston vacuum pump. It can be greatly improved series H rotary piston pump and incorporates four patents; its general capabilities possess a excellent improvement.
Rotary piston vacuum pump is really a sort of vacuum manufacturing tools ideal for pumping ordinary gases and condensable gases(when a fuel ballast made use of). The pump needs to be fitted with appropriate accessories if gasoline is wealthy in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle demonstrate in working 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 modified repetitively, so that pumping objective may very well be achieved.
The series HGL, HG pump can be a backing pump when mixed with yet another large vacuum pump at the same time as operate singly. It truly is broadly used in vacuum smelting, vacuum drying, vacuum impregnation and higher vacuum simulation testing,and so on.
