Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1976-01-27
1978-05-16
Sever, Frank
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 68, 210 82, 210108, 210411, B01D 4104
Patent
active
040897818
ABSTRACT:
A method of and an apparatus for regenerating a pressure filter in which the liquid to be filtered is flown through a filter medium arranged in such a way as to partition the interior of the filter housing into a pressure chamber adapted to receive the liquid to be filtered and into a filtrate receiving chamber from which the filtrate is discharged, wherein, for the purpose of regenerating the filter, the introduction of liquid is interrupted, this step being accompanied by the introduction of a pressurized gas into the pressure chamber of the filter in order substantially completely to remove from the filter both the liquid not yet filtered and the filtrate still present, and wherein, upon completion of the emptying step, the introduction of pressurized gas into the pressure chamber of the filter is interrupted and the filter medium on its side facing the pressure chamber is washed by means of a washing medium, this step being accompanied by the introduction of a pressurized gas into the filtrate receiving chamber in a directon opposite to the direction in which the first-mentioned pressurized gas was introduced, this step being carried out simultaneously with the said washing step and being continued until the material deposited on the filter medium has at least partially been removed.
REFERENCES:
patent: 1348159 (1920-08-01), Down
patent: 1498061 (1924-06-01), Adams
patent: 1846914 (1932-02-01), Sharp
patent: 2190941 (1940-02-01), Gardner
patent: 2780363 (1957-02-01), Pew
patent: 3095289 (1963-06-01), Egan
patent: 3443696 (1969-05-01), Schutte
patent: 3716968 (1973-02-01), Mischke
C J Wennberg AB
Sever Frank
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