Grooved pump chamber walls for flushing fiber deposits

Details Grooved pump chamber walls for flushing fiber deposits Grooved pump chamber walls for flushing fiber deposits

1992-10-02

1994-06-07

Bertsch, Richard A.

Rotary expansible chamber devices

With removal or accommodation of solid foreign material in...

418 79, F01C 2100

Patent

active

053184157

ABSTRACT:
A rotary lobe pump has a pair of rotary lobes rotatably mounted in a pump chamber having end walls perpendicular to axes of the lobes and a side wall with which the rotors making sealing contact. At least one of the end walls is provided with a shallow groove in a region between the axes, the groove being of a selected depth and width to permit solid material lodged between the rotors and at least one of the end walls to become disengaged and flushed out while allowing a minimum of fluid to flow through the groove causing pressure loss in the pump.

REFERENCES:
patent: 1348771 (1920-08-01), Auger
patent: 1348772 (1920-08-01), Auger
patent: 1348773 (1920-08-01), Auger
patent: 2878757 (1959-03-01), Marco
patent: 4225296 (1980-09-01), Haupt
patent: 4400146 (1983-08-01), Dworak et al.
patent: 4462770 (1984-07-01), Haupt
patent: 4645439 (1987-02-01), Way

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