Filtering device

Details Filtering device Filtering device

1976-12-02

1978-02-21

Sever, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

55498, 55521, 156291, 156295, 210493R, 210508, B01D 3918

Patent

active

040751066

ABSTRACT:
A filtering device comprises a cylindrical member bored with a large number of holes; a sheet-like filter element crosswise folded like bellows and rolled into a cylindrical form so as to concentrically surround the bored cylindrical member and a plurality of thin band-shaped liquid passage plates interposed between every adjacent folded portions of the inner wall of the filter element, and wherein each liquid passage plate has both surfaces made irregular and further its width chosen to be equal to or larger than the height of the projecting folded portion of the sheet-like filter element.
At least one annular support band surrounds the outer periphery of the filter element defined by the apexes of the folded projections. An adhesive applied to the inner peripheral wall of said annular support band permits the support band to hold the folded projections in position and also permeates the apexes of the folded portions, thereby fixing the inner walls of the apexes to the outer edges of the passage plates.

REFERENCES:
patent: 3302796 (1967-02-01), Downey
patent: 3692184 (1972-09-01), Miller et al.

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