Method, device and filter module for the filtration of liquids i

Details Method, device and filter module for the filtration of liquids i Method, device and filter module for the filtration of liquids i

1989-05-12

1991-02-05

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210350, 21032169, 210409, B01D 6502

Patent

active

049902563

ABSTRACT:
In a method and a device for preventing or breaking down a filter covering layer during the filtration of liquids with finely distributed constitutents therein in a cross-flow operation in which the liquid to be treated is conducted in a narrow overflow slot (SP) between a filter surface (PM) and a slot limiter surface (FM), the slot limiter surface (FM) is brought adhesively into areal contact with the developing filter covering layer (DS) in a periodic manner by means of relative motion relative to the filter surface (PM) and the filter covering layer (DS) is removed in a rinsing fashion from the filter surface (PM) by reactivating the overflow slot (SP) and overflowing the filter surface (PM) and the slot limiter surface (FM). The movable wall is formed by a foil membrane consisting of plastic which is clamped on the edge in a sealing manner in a surrounding housing. The foil membrane can be loaded on the side facing away from the overflow slot by a gas or liquid source and the filter surface (PM) is formed by a flexible, permeable membrane.

REFERENCES:
patent: 3387630 (1968-06-01), Routson
patent: 4374731 (1983-02-01), Brown et al.
patent: 4412553 (1983-11-01), Kopp et al.

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