Liquid purification or separation – Flow – fluid pressure or material level – responsive – Discharge of treated material
Patent
1984-07-23
1986-06-17
Sadowski, David
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Discharge of treated material
210129, 2101952, 2102572, 2104332, B01D 3100
Patent
active
045954976
ABSTRACT:
A reverse osmosis system in which a pair of oppositely disposed, vertically aligned rigid cup shaped bodies that have outwardly extending first flanges are by a circumferentially adjustable band forced into pressure sealing contact with a second flange of a pliable cup shaped barrier to define a reservoir. The barrier when not deformed occupies only a portion of the interior of one of the cup shaped bodies, and requires a minimum of material to define. The uppermost one of the cup shaped bodies supports a single valve that has a pressurized feed water inlet and outlet, and a movable portion that extends into the interior of the upper cup shaped member. Upward movement of the movable portion throttles the rate of flow of pressurized feed water between the inlet and outlet. The barrier in addition to sub-dividing the interior of the reservoir into first and second confined spaces of variable volume into which pure water and reject water may flow into and out of, also serves to physically contact the movable portion and move it upwardly as the first confined space moves towards a last stage in approaching a filled condition to throttle the flow of pressurized feed water through the valve.
REFERENCES:
patent: 3089513 (1963-05-01), Kirk
patent: 3542199 (1970-11-01), Bray
patent: 3716143 (1973-02-01), Clark
patent: 3831757 (1974-08-01), Gossett et al.
patent: 3862708 (1975-01-01), Waxlax
patent: 3887463 (1975-06-01), Bray
patent: 4176063 (1979-11-01), Tyler
Babcock William C.
Sadowski David
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