Twin shaft vacuum pump with purge gas inlet

Details Twin shaft vacuum pump with purge gas inlet Twin shaft vacuum pump with purge gas inlet

1990-02-20

1991-09-10

Smith, Leonard E.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Non-working and working fluids intermix in working chamber

418200, 418206, F04C 2900, F04C 2300

Patent

active

050469347

ABSTRACT:
A twin-shaft vacuum pump including a rotor pair mounted for rotation in a pump chamber. The rotor pair together with the chamber wall define a suction side and delivery side of the pump chamber. In order to prevent solid particles suspended in pump fluid from settling in the chamber, the invention provides a flushing gas outlet orifice disposed on the delivery side of the pump chamber and adapted to be connected to a source of flushing gas. The solid particles can thus be held in suspension and conveyed from the pump with the assistance of flushing gas supplied through the orifice.

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