Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1989-06-26
1996-04-02
Dawson, Robert A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 90, 210103, 210134, 210136, 210137, 210167, 210194, 2103216, 2104161, 15DIG2, 134111, B01D 6112
Patent
active
055037356
ABSTRACT:
A liquid purification system is disclosed. In this system water is pumped into a filter cartridge. A reverse osmosis filter membrane in the filter cartridge removes impurities from the water, but not all of the water passes through the membrane. Water passing through the membrane exits the filter cartridge through a first outlet port, and is sent to a storage tank. Water not passing through the filter membrane exits the filter cartridge through a second outlet port. This water then passes through a pressure relief valve. The pressure relief valve can be adjusted to vary the water pressure and flow rates in the system. Some of the water exiting the pressure relief valve passes through a flow restrictor valve and then to drain. The flow restrictor maintains a constant flow rate at variable pressures. In this system, the flow restrictor is operable to maintain the same flow rate through it to drain and through the first filter outlet port. The match of these two flow rates results in a preferred 50% recovery rate of filtered water. Water that does not pass through the flow control restrictor is returned to the pump inlet for recycling through the system. An automatic flush system and various control functions for operation of the system are also disclosed.
REFERENCES:
patent: 3774763 (1973-11-01), Yall et al.
patent: 3856676 (1974-12-01), Grimme et al.
patent: 3992301 (1976-11-01), Shippey et al.
patent: 4482456 (1984-11-01), Grayson
patent: 4610790 (1986-09-01), Reti et al.
patent: 4652368 (1987-03-01), Ennis et al.
patent: 4741823 (1988-05-01), Olsen et al.
patent: 4784763 (1988-11-01), Hambleton et al.
PRO Spot Free Rinse Systems brochure entitled "Application" (1988).
Water Factory Systems brochure entitled "Acro Advanced Computerized Reverse Osmosis System" (1989).
PRO Spot Free Rinse Systems publication entitled "Syncro Microprocessor Controlled Reverse Osmosis System" (Date of Publication Unknown).
Herzog Gregg
Slovak Jack
Slovak Robert
Spears Dave
Vinas Paul F.
Dawson Robert A.
Drodge Joseph
Water Factory Systems
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