Liquid-flow control apparatus

Fluent material handling – with receiver or receiver coacting mea – With means to move supply means and/or receiver to – from or... – Relatively receding discharge assistant and receiver...

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Details

141261, 141117, 222372, B65B 304

Patent

active

049057448

ABSTRACT:
A dosing device for filling liquid into containers comprises a filler body and a metering device. The metering device communicates with the interior of a rotary valve through an end cover of the valve housing, the valve including a valve seat and a check valve closure member spring-biased towards the seat. The valve includes first, second and third rotary ports and first and second fixed ports. Downstream of the second fixed port is an anti-drip suction-producing device of a piston-and-cylinder form whereof the stroke of the piston is adjustable. Upstream of the first fixed port is a throttling valve lowerable into an operative position downstream of inlet holes from a liquid-containing tank. For a high viscosity liquid, it is drawn into the metering device through the holes, the first fixed and rotary ports and the end cover, the rotary valve is rotated to align the second rotary port with the second fixed port and to close the first fixed port, and the liquid is then expelled from the metering device through the end cover, the second rotary and fixed ports and an outlet nozzle. A low viscosity liquid is drawn into the metering device through the holes, the lowered throttling valve, the first fixed and rotary ports and the end cover, and is then expelled from the metering device through the end cover, and check valve, the third rotary port and the second fixed port and the nozzle.

REFERENCES:
patent: 1066660 (1913-07-01), Ross
patent: 1077000 (1913-10-01), Ross
patent: 1815875 (1931-07-01), Muller
patent: 2014997 (1935-09-01), Auger
patent: 2779506 (1957-01-01), Gajda
patent: 2978149 (1961-04-01), Rosen
patent: 3982724 (1976-09-01), Citrin
patent: 4030640 (1977-06-01), Citrin et al.
patent: 4230160 (1980-10-01), Buckley
patent: 4254806 (1981-03-01), Elsworth
patent: 4478412 (1984-10-01), Muir
patent: 4569378 (1986-02-01), Bergandy
patent: 4674547 (1987-06-01), Simonazzi

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