Liquid purification or separation – Flow – fluid pressure or material level – responsive – Discharge of treated material
Patent
1986-05-27
1987-09-22
Cintins, Ivars
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Discharge of treated material
210117, 2102572, 2103211, 2104332, B01D 1300
Patent
active
046953752
ABSTRACT:
The water purifier is operated entirely automatically and hydraulically in response to the opening and closing of the outlet valve from which pure water is drawn. All of the passageways and control valves are contained within a unitary body so that there are no external hoses and fittings. The only connections to the body are a pure water outlet, a waste water outlet and the water inlet. In the filter chamber a reverse-osmosis filter membrane is circumscribed by a brine seal at the same end portion as where the pure water is discharged. All water passageway connections are made at that end of the filter chamber, so that the other end can be unthreaded for removal and replacement of the filter membrane without disconnecting water lines. An improved pilot valve within the unit has a tapered end portion engaging an O-ring seat held in place by a spring-pressed washer. The unit also includes a fast-acting check valve, with a floating valve member connected to the periphery of the valve chamber by a plurality of flexible strips.
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