Rotary pump system

Details Rotary pump system Rotary pump system

1988-06-24

1989-10-31

Stout, Donald E.

Pumps

One fluid pumped by contact or entrainment with another

Diverse pumps

417 87, F04B 2314

Patent

active

048773778

ABSTRACT:
A rotary pump system for pumping a liquid which is delivered under pressure from a backing pump 8, in which a rotary pump 1 has a pump body which is required to be drained of liquid at times when the pump 1 is inoperative, wherein the backing pump 8 has a by-pass circuit between its inlet and outlet ports, the by-pass circuit comprisng a multiphase pump 13 which has a suction inlet 14 connected to a drain point 16 on the pump 1 body and a vortex chamber 17 through which liquid passes from the pump 13 outlet to the backing pump 8 inlet, a central outlet 18 of said vortex chamber being connected to an inlet port 6 of said pump 1. This allows automatic draining of the pump 1 body when use of this pump is not required.

REFERENCES:
patent: 2883936 (1959-04-01), Daddario
patent: 2902206 (1959-09-01), Power
patent: 3551073 (1970-12-01), Petrovits
patent: 3810714 (1974-05-01), Turner
patent: 4294573 (1981-10-01), Erickson et al.
patent: 4422829 (1983-12-01), Buchanon

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