Filtering apparatus

Details Filtering apparatus Filtering apparatus

1982-09-21

1984-06-12

Cintins, Ivars C.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Filter cleaning

210264, 210277, 2103331, B01D 2324

Patent

active

044540337

ABSTRACT:
Apparatus for continuous filtration of a fluid, for example water containing solids, comprising a plurality of filter cells partially filled with mobile filtering material, each cell having an inlet and an outlet, means being provided for continuously supplying fluid to the inlets, a drain element for filtered solids being connectible to a limited number of cell inlets without interrupting the fluid supply to the other cell inlets, the drain element lowering the fluid supply pressure prevailing at the limited number of cell inlets to a value lower than the filtrate pressure prevailing at the cell outlets so that these cells are backwashed with filtrate such that the mobile filtering material only partially filling the cells is swirled in the turbulent filtrate flow within the cells and is thoroughly cleaned from adhering solids.

REFERENCES:
patent: 2173060 (1939-09-01), Andrews
patent: 2302450 (1942-11-01), Laughlin
patent: 3246767 (1966-04-01), Pall et al.

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