Fluid handling – Systems – Closed circulating system
Patent
1978-08-30
1980-08-05
Cline, William R.
Fluid handling
Systems
Closed circulating system
137255, 137571, 137428, 137433, F16K 3122, E03B 707
Patent
active
042157196
ABSTRACT:
Fluid is withdrawn from plural fluid-filled tanks via respective outflow conduits leading into a common mixing conduit which includes a mixing pump, and then branches off through respective inflow conduits for return of intermixed fluid back to the individual tanks. Each inflow conduit is provided with a valve unit comprising a vessel-like housing having an inlet port and an outlet port. The flow from the inlet port to the outlet port is regulated in dependence upon the height of fluid in the respective tank. The fluid height is sensed indirectly by sensing the height or pressure of fluid in the interior of the vessel-like housing, the latter being at least partly lower than the height of fluid in the respective tank. Thus, the return of fluid into each tank is regulated to maintain a respective fluid height therein independently of the other tanks.
REFERENCES:
patent: 645925 (1900-03-01), Bishop et al.
patent: 2691386 (1954-10-01), Madison
patent: 2904062 (1959-09-01), Techler
patent: 3784169 (1974-01-01), Bockmann et al.
patent: 4066097 (1978-01-01), Fritsch
Laar Erwin
Sieber Werner
Spickenreither Josef
AGFA-Gevaert A.G.
Cline William R.
Striker Michael J.
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