Liquid purification or separation – Processes – Chemical treatment
Patent
1980-01-14
1981-10-06
Bernstein, Hiram
Liquid purification or separation
Processes
Chemical treatment
E04H 320
Patent
active
042934257
ABSTRACT:
In chlorinating a swimming pool equipped with a periodically operating pump arranged to circulate water from the pool through a filter assembly and back to the pool, chlorination of the pool water is accomplished by the use of a solid chlorinating material. The chlorinating material is introduced into an openable airtight chamber which has a water inlet to and a water outlet from the chamber at the bottom thereof. To prepare the chamber for insertion of chlorinating material, a valve in a duct to the water inlet is closed and a check valve associated with the outlet prevents backflow of water into the chamber so that before opening the chamber air previously contained in the chamber from a prior loading of chlorinating material expands in the chamber to express water from the chamber through the outlet, thereby providing an essentially dry chamber. The chamber is then opened and additional chlorinating material is placed therein. The chamber is then first closed and the valve to the inlet is opened. Operation of the pump motor introduces water under pressure into the chamber to compress air therein and to cause water to flow over the chlorinating material.
REFERENCES:
patent: 1033717 (1912-07-01), McClellan
patent: 1409248 (1922-03-01), Levcik
patent: 2142947 (1939-01-01), Kretzschmar
patent: 2908476 (1959-10-01), Hidding
patent: 3410517 (1968-11-01), Wall
patent: 3456801 (1969-07-01), Bowles
patent: 3828983 (1974-08-01), Russo
patent: 3899425 (1975-08-01), Lewis
Bernstein Hiram
Price Kenneth E.
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