Cleaning and liquid contact with solids – Processes – Combined
Patent
1983-11-08
1985-02-26
Caroff, Marc L.
Cleaning and liquid contact with solids
Processes
Combined
134 2218, 134 23, 134 33, 141 90, 141 91, B08B 302
Patent
active
045016224
ABSTRACT:
Apparatus for cleaning a flowable material filling device composed of a hopper for holding the material, a plurality of spaced-apart assemblies, each of which includes a cylinder into which material flows from the hopper and a piston movable in the cylinder to force material from the cylinder into containers, and a piston support structure for causing the pistons to move in the cylinders. The apparatus includes a lifting mechanism coupled to the piston support structure and responsive to a first signal for moving the piston support structure in a first direction to thereby move the pistons out of the cylinders, and responsive to a second signal for moving the piston support structure in a second direction to thereby move the pistons back into the cylinders. Valve controlled liquid spray nozzles are positioned to spray liquid into the cylinders and against the pistons when they are removed from the cylinders in response to a third signal. A control unit automatically supplies the first, second and third signals to control the lifting mechanism and the valves.
REFERENCES:
patent: 1254190 (1918-01-01), Baker
patent: 2961013 (1960-11-01), Johnson
patent: 2998037 (1961-08-01), Bingham
patent: 3568734 (1971-03-01), Vadas et al.
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