Separator for filter cartridges

Details Separator for filter cartridges Separator for filter cartridges

1983-11-21

1985-12-24

Fisher, Richard V.

Liquid purification or separation

Filter

With central pervious tubular receiver

55498, 55521, 210483, 2104931, 21049701, B01D 2706

Patent

active

045604770

ABSTRACT:
At preferably circular filter cartridges, where pleated filter material is placed around a centrally arranged perforated tube, this filter material can be sucked to collapse if the pressure gradient through the material becomes large, whereby the advantages having a pleated filter cartridge with a relatively large filter surface and a very little volume are lost.
One means for preventing such collapse is using a separator which is arranged in each pleat of the filter material, whereby the separator includes a rigid organic foil formed in a pyramidal pleating, the amplitude of this pleating increasing from zero in the edge of the pleat of the filter material to maximum at the centrally arranged perforated tube constituting the base of the pleat of the filter material. Manufacturing a light construction of a filter cartridge is hereby obtained which is able to resist pressure gradients up to a certain limit without being sucked to collapse.
With the separators it is secured that the capacity of the filter is present during the lifetime of the filter independent of the pressure difference between outside and inside of the filter material.

REFERENCES:
patent: 2988227 (1961-06-01), Harms
patent: 3243943 (1966-04-01), Gretzin
patent: 3720323 (1973-03-01), Landree
patent: 4075106 (1978-02-01), Yamazaki
patent: 4151095 (1979-04-01), Wright
patent: 4154688 (1979-05-01), Pall

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