Filter apparatus including filter cartridges and an inpermeable

Details Filter apparatus including filter cartridges and an inpermeable Filter apparatus including filter cartridges and an inpermeable

1993-02-11

1994-11-15

Dawson, Robert A.

Liquid purification or separation

Plural distinct separators

Filters

210420, 210452, 210453, 210455, B01D 2952

Patent

active

053645286

ABSTRACT:
A filter apparatus is described, in which there are in the interior of a filter housing (7) a multiplicity of filter elements (1) which are suspended on the filter cover (3) and in which the inner bores of the filter cartridges are connected to the outlet nozzle (6) via a system of channels. Against the wall of the filter housing (7) there bears a film bag (2), the upper end of which is welded to an O-ring (4), which is seated in an annular groove on the flange of the filter housing, with the diameters of O-ring and film bag being identical. Furthermore, volume displacers (16, 17, 25), which extend in the axial direction over the entire length of the filter housing, are provided between filter bag (2) and inner wall of the filter housing as well as in the inner space of the filter cartridges. When a filter is changed, these volume displacers are, for example, inflated with compressed air, as a result of which the volume of residual filtrate is considerably reduced, so that less loss of dispersion occurs. The arrangement described permits an easy filter change and offers advantages in the disposal of the residues (2).

REFERENCES:
patent: 3684100 (1972-08-01), Close
patent: 4120794 (1978-10-01), Taylor
patent: 4690621 (1987-09-01), Swain
patent: 4707256 (1987-11-01), Gerteis
patent: 4711717 (1987-12-01), Wolf
patent: 4882051 (1989-11-01), Itoh
patent: 5017287 (1991-05-01), Kuntz et al.

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