Air driven diaphragm pump

Details Air driven diaphragm pump Air driven diaphragm pump

1993-02-16

1995-01-03

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

4174131, F04B 4306

Patent

active

053781228

ABSTRACT:
A double diaphragm pump having an air chamber housing centrally located between two pump chamber housings. The air chamber housing includes a center section and two outwardly facing concave discs. Each pump chamber housing includes a pump chamber shell mating with one of the discs with a flexible diaphragm therebetween. Check valve chambers and inlet and outlet passages associated with each pump chamber and with inlet and exhaust manifolds control flow through the pump. A solenoid actuated valve alternately directs air pressure to each of the two diaphragms for reciprocal pumping action. Inner pistons associated with the diaphragms include stops which limit pump stroke in each direction. The solenoid may be driven by conventional electronics on a timed stroke or responsive to flow considerations.

REFERENCES:
patent: 4367140 (1983-01-01), Wilson
Valco's Electronically Controlled Diaphragm Pumps, 4-page publication.

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