Reciprocating pump

Details Reciprocating pump Reciprocating pump

1990-10-10

1992-02-18

Bertsch, Richard A.

Pumps

Motor driven

Relatively movable pumping members driven by relatively...

417343, 417 62, F04B 3502

Patent

active

050888986

ABSTRACT:
A reciprocating pump comprises a plurality of pump sections, each pump section having a suction inlet and a discharge outlet, the inlets all connecting with a common passageway through which the pumped fluid is supplied and the outlets all connecting with a common discharge passageway through which the pumped fluid is discharged. Each pump section includes a bellows which reciprocates to alternately produce suction and discharge strokes, with a change-over period between strokes. A drive control for the bellows delays the start of strokes by the bellows so that when one pump section is in a suction stroke or a change-over period, at least one other pump section is in a discharge stroke. The arrangement reduces variations in pressure in the discharge from the pump.

REFERENCES:
patent: 2463552 (1949-03-01), Newhall
patent: 4269569 (1981-05-01), Hoover
patent: 4836756 (1989-06-01), Fukumoto
patent: 4981418 (1991-01-01), Kingsford et al.

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