Membrane cartridge with improved central collection tube

Details Membrane cartridge with improved central collection tube Membrane cartridge with improved central collection tube

1975-10-30

1977-05-03

Spear, Jr., Frank A.

Liquid purification or separation

With repair or assembling means

210433M, 210494M, B01D 3100

Patent

active

040213510

ABSTRACT:
A spiral wound reverse osmosis or ultrafiltration membrane cartridge has a central collection tube fabricated from a plurality of interlocking segments; the center segments are perforated and the segment at each end is imperforate. The side edges of the cartridge membrane leaves and the permeate transfer sheet are sealingly attached to the central collection tube by circumferential bands of glue located outboard of the juncture of the imperforate end segments with adjacent perforate center segments. Substantial fabrication economies result from injection molding the center segments as identical bodies from a single die; and injection molding the end segments also as identical bodies from a single die.

REFERENCES:
patent: 3406831 (1968-10-01), Bush et al.
patent: 3417870 (1968-12-01), Bray
patent: 3695446 (1972-10-01), Lyall et al.
patent: 3786925 (1974-01-01), Block et al.

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