Air-pressure actuated slurry pump

Details Air-pressure actuated slurry pump Air-pressure actuated slurry pump

1974-08-09

1976-01-06

Freeh, William L.

Pumps

One fluid pumped by contact or entrainment with another

Liquid pumped by supplying or exhausting gaseous motive...

417129, 417130, 417138, 417143, 417318, F04F 106, F04F 300

Patent

active

039307557

ABSTRACT:
A slurry pump including a pressure tank with an inlet and a lower outlet and having a pneumatically operated, inwardly opening closure at the inlet and a hinged, outwardly opening door at the outlet swingable between opened and closed positions. An external source of air under pressure hydraulically shuts the closure and pressurizes the tank, forcing a semi-liquid slurry such as liquid manure contained within the tank through the outlet and into a duct leading to a lagoon or the like. A slurry level sensor shuts off the supply of air to the tank when the slurry reaches a given level in the tank.

REFERENCES:
patent: 350761 (1886-10-01), Neff
patent: 1492171 (1924-08-01), Jannings
patent: 1830424 (1931-11-01), Codne
patent: 2270434 (1942-01-01), Gould
patent: 2315824 (1943-04-01), Sweeny
patent: 3173379 (1965-03-01), Jolly
patent: 3422768 (1969-01-01), Repp
patent: 3662715 (1972-05-01), Schapler
patent: 3667869 (1972-06-01), Schlecht

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