Liquid purification or separation – Flow – fluid pressure or material level – responsive – Check valve
Patent
1983-01-10
1984-10-23
Fisher, Richard V.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Check valve
210248, 210340, 2104161, 13762548, B01D 2910
Patent
active
044787146
ABSTRACT:
There is described a pressurized filtration system for removing suspended solids from a liquid which comprises two enclosed filter vessels each containing either a removable filter bag or cartridge. The vessels are located in parallel in the circulation line of a pump which pumps the liquid from a bulk storage vessel through only one filter vessel at a time, this being controlled by a valve system in the circulation line to the filter vessels. Liquid forced through the filter vessel in use is pumped to a liquid storage vessel via a non-return valve located in the outlet line from each vessel, the outlet from each vessel having a branch connection to a shuttle valve, the outlet from which is connected via a non-return valve to the suction side of the pump, whereby when liquid is being pumped through one vessel the shuttle valve is shut against the flow of liquid therethrough but is open on the other side so that the liquid can be sucked out of the other vessel.
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Bacon Paul A.
Blake Colin C.
Goodall Charles C. O.
Ciba-Geigy AG
Falber Harry
Fisher Richard V.
Millard Wanda L.
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