Automatic control system for diaphragm pumps

Details Automatic control system for diaphragm pumps Automatic control system for diaphragm pumps

1992-04-30

1993-10-12

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

417 46, F04B 4306

Patent

active

052520412

ABSTRACT:
A method and apparatus for controlling the discharge time of a fluid activated diaphragm pump. The control system regulates the discharge time, by measuring the discharge time and comparing the measured time with a predetermined desired discharge time. The control system includes, inter alia, a programmable logic controller, an upper and lower proximity switch, a target, a rod to hold the target, a pilot controlled pressure regulator, a set of digitally controlled solenoids which control a pilot valve, a solenoid, and a pressure switch. The rod is secured to the diaphragm of the diaphragm pump, and the proximity switches respond to the movement of the rod to detect the movement, or stroke, of the diaphragm. The pressure supplied to the diaphragm pump is automatically, and continuously, adjusted to maintain a desired discharge time.

REFERENCES:
patent: 3814548 (1974-06-01), Rupp
patent: 4212589 (1980-07-01), Bosio
patent: 4265600 (1981-05-01), Mandroian
patent: 4705462 (1987-11-01), Balembois
patent: 4765225 (1988-08-01), Birchard
patent: 4856969 (1989-08-01), Forsythe et al.
patent: 4966528 (1990-10-01), Henkel et al.
patent: 4990058 (1991-02-01), Eslinger
patent: 5076890 (1991-12-01), Balembois

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