Fluid handling – Systems – Main line as motive fluid for follower-type feeder
Patent
1990-12-03
1992-03-10
Rivell, John
Fluid handling
Systems
Main line as motive fluid for follower-type feeder
E03B 707
Patent
active
050942697
ABSTRACT:
A liquid fertilizer metering apparatus 130 which includes a metering assembly 148, FIGS. 11-18, that meters through its orifice 155 the liquid material contained in a pliable bag 134 disposed in a sealed pocket 132 of the apparatus. A passageway 142 from an exit pressure location in an Venturi tube 141 provides water flow into pocket 132 to pressurize bag 134, thereby discharging the liquid material through the metering assembly 148 and into another passageway 145 in the apparatus that is connected to the restricted throat 142 of the Venturi tube, thus releasing such material into the water flow conduit to which the tube is attached. Metering assembly 148 comprises a hollow housing 150 mounted in the wall 156 forming pocket 132, a hollow sleeve 153 snapped into housing 150, and a metering orifice plate 152 secured in housing 150 by sleeve 153. Sleeve 153 sealingly attaches to bag 134 while housing 150 seats in wall 156, to provide a quick and efficient manner of exchanging a collapsed bag for a filled bag of liquid material in pocket 132.
REFERENCES:
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patent: 3198438 (1965-08-01), Hultgren
patent: 3204661 (1965-09-01), Young
patent: 3220435 (1965-11-01), Ellingson
patent: 3720230 (1973-03-01), Stockstill et al.
patent: 3726304 (1973-04-01), Cook
patent: 4406406 (1983-09-01), Knapp
patent: 4418869 (1983-12-01), Healy
patent: 4736769 (1988-04-01), Belanger
patent: 4974634 (1990-12-01), Agulia
Rivell John
Zugelter Frank L.
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