B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
137/26, 4/48, 18
B01D 35/12 (2006.01) B01D 29/00 (2006.01) B01D 35/18 (2006.01) B01D 37/00 (2006.01)
Patent
CA 1071541
POOL FILTERING SYSTEM Abstract of the Disclosure A pool filtering system is shown which will be de- described in connection with swimming pools although it should be understood that the same system may be used to refine industrial waters and for other installations such as killer whale and por- porpoise pools. Dirty water from the pool passes into a stilling or surge chamber under the control of a flat valve, then passes through a large particle interceptor screen into a filter ele- ment chamber which has a plurality of generally vertically ex- tending filter elements, each having a coarse core covered by an outer layer of sufficiently fine mesh to retain an outer coating of diatomaceous silica, then through the filter elements in parallel to a manifold at the bottom of the tank which leads to the recycling pump and directs the clean water back to the pool. A diatomaceous silica dry slurry feeder is installed above the filter tank. A hypochlorinator is effective in the clean water line going back to the pool. A heat exchanger may be mounted in the stilling chamber, if desired. In a preferred form, each filter element comprises a vertical cylinder having an inner or core layer of silicon-bronze wire about 0.062 inches in diameter and between about 1/8 inch and 1/4 inch mesh, out- side of which is a layer of stainless steel flattened dutch weave wire between about 20 x 120 and 30 x 130 mesh welded to the inner layer. These cylinders are between about 4 inches and 4-1/2 inches in diameter and between about 30 and 36 inches in length. These elements are sufficiently strong to withstand a pressure differential of about 150 pounds per square inch. An air reservoir is kept filled with compressed air under about 40 pounds per square inch and back-washing is accomplished by exploding or ramming the air from the air reservoir through the manifold system and up and out through the filter elements re- moving the spent diatomaceous silica which falls to the filter tank floor. Preferably the top of the filter tank is open so that the condition of the filter elements may be inspected at all times and the filter elements may be washed with a hose if necessary to clean off the spent diatomaceous silica.
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