Sand filter cleaning system

Details Sand filter cleaning system Sand filter cleaning system

1987-01-07

1990-07-24

Smith, Leonard E.

Pumps

One fluid pumped by contact or entrainment with another

Liquid pumped by supplying or exhausting gaseous motive...

417151, 210169, F04F 544

Patent

active

049432117

ABSTRACT:
A sand filter cleaning apparatus includes a suction head having an enlarged intake opening for sucking materials thereinto attached to an exhaust hose for receiving material sucked into the suction head. A water pressure hose is connected between a water source under pressure and the suction head for directing water under pressure into the suction head. The suction head has a jet nozzle positioned to direct water under pressure from the water pressure hose towards the exhaust hose to create a suction therein in the suction head opening and a second nozzle for directing water under pressure in front of the opening of the suction head to thereby stir up material in front of the suction head. The exhaust hose is positioned to increase the pressure with a siphon by having a longer drop leg than the intake leg of the exhaust hose.

REFERENCES:
patent: 307855 (1884-11-01), Haughan
patent: 1643025 (1927-09-01), Meggenhofen
patent: 1842043 (1932-01-01), Modra et al.
patent: 2044088 (1936-06-01), Lord
patent: 2068363 (1937-01-01), Wetmore et al.
patent: 2161895 (1939-06-01), Brenner
patent: 3323468 (1967-06-01), Thompson

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