Double-acting diaphragm pump system

Details Double-acting diaphragm pump system Double-acting diaphragm pump system

1984-08-15

1989-04-04

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

417397, 91275, F04B 4306

Patent

active

048181919

ABSTRACT:
A double-acting diaphragm pump system for pumping and spraying materials, particularly corrosive liquids and abrasive fluids. The system includes a hydraulically driven double-acting diaphragm pmup which is electrically controlled for alternately pumping material through the dual pump chambers to an outlet pipe. The diaphragms of the double-acting pump are moved back and forth by a dual-acting hydraulic cylinder powered by a hydrostatic transmission for providing automatic response to pumped fluid needs, coupled with overpressure protection. An expansion tank maintains a constant pressure on the fluid as it is discharged from the pump. The system is capable of spraying abrasive slurries of a wide variety, at an even spray pattern, as the system wears, and hardened wear rings around the inlet and outlet valves permit the pump to be inexpensively rebuilt after extended use pumping abrasive slurries.

REFERENCES:
patent: 2135721 (1938-11-01), Landenberger
patent: 2555046 (1951-05-01), Livers et al.
patent: 2723882 (1955-11-01), Barnett
patent: 2799444 (1957-07-01), Schemmel
patent: 3249053 (1966-05-01), Govan
patent: 3489063 (1970-01-01), Piret
patent: 3741692 (1973-06-01), Rupp
patent: 4339233 (1982-07-01), Krueger
patent: 4373864 (1983-02-01), Massey et al.

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