Manure handling system having recirculating pump

Details Manure handling system having recirculating pump Manure handling system having recirculating pump

1979-04-27

1981-10-06

Freeh, William L.

Pumps

Processes

417551, 417430, F04B 3900

Patent

active

042932823

ABSTRACT:
A manure pump 2 includes a collection hopper 4 for collecting manure. A housing 20 attached to the collection hopper 4 has a pump cylinder 32 located therein. The discharge end 38 of the pump cylinder 32 has a one-way check valve 40. Housing 20 also includes a return path 60 which connects the discharge end 38 of pump cylinder 32 to collection hopper 4. When check valve 40 is jammed in a partially open position, the return path 60 is opened by removing a valve plate 68. Operation of pump piston 32 will recirculate the manure through the return path 60 back to the collection hopper 4 to clear the jammed check valve 40.

REFERENCES:
patent: 1246543 (1917-11-01), Carmichael
patent: 1823394 (1931-09-01), Geiger
patent: 3465685 (1969-09-01), Sherrod
patent: 3687311 (1972-08-01), Nesseth
patent: 3726308 (1973-04-01), Eberhardt
patent: 3819303 (1974-06-01), Pfleger
patent: 3872981 (1975-03-01), Hedlund
patent: 4173430 (1979-11-01), Kubota

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