Fluid powered diaphragm pump with cycle timer

Details Fluid powered diaphragm pump with cycle timer Fluid powered diaphragm pump with cycle timer

1988-06-27

1989-08-15

Croyle, Carlton R.

Pumps

Motor driven

Fluid motor

417 9, F04B 4306

Patent

active

048569690

ABSTRACT:
A hydraulically activated diaphragm pump. A pressure source is coupled to a pump diaphragm during a pump discharge stroke. During this discharge stroke, an air activated return assist cylinder is vented to atmosphere. On the return stroke the pump housing above the diaphragm is vented and the air cylinder activated. A single 4-way solenoid actuated valve controlled by an adjustable timer accomplishes this cylic pumping action. The timer is adjustable to set the number of pump cycles per minute and also adjusts the discharge stroke period of each cycle. A pressure regulator adjusts the pressure of air routed through the solenoid actuated valve to provide relatively high pressure air to the diaphragm on the discharge and low pressure air to the air cylinder on the return stroke.

REFERENCES:
patent: 2239270 (1941-04-01), Jahreis
patent: 3176623 (1965-04-01), Howerton et al.
patent: 3781141 (1973-12-01), Schall
patent: 3814548 (1974-06-01), Rupp
patent: 4621990 (1986-11-01), Forsythe et al.

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