Porous filter for liquid purification, and liquid purifying filt

Details Porous filter for liquid purification, and liquid purifying filt Porous filter for liquid purification, and liquid purifying filt

1992-08-24

1995-04-04

Dawson, Robert A.

Liquid purification or separation

Plural distinct separators

Filters

210346, 210486, 2104941, 21049701, 2104973, 2105101, 55523, B01D 3914

Patent

active

054034809

ABSTRACT:
A liquid purifying porous filter and a filter assembly employing the same can significantly improve filtering performance for impurities in the drinking water, liquors, liquidous seasoning or pool water and can perform back washing while purifying operation is maintained. The filter assembly is small in size, compact and easy to handle, and achieves high performance both in senses of quality and quantity, and is capable of performing back washing while maintaining operation, is compact and is easily installed. The porous filter for purifying a liquid comprises a hollow body having an outer peripheral surface contacting with a non-purified liquid before purification and an inner periphery defining a central through opening and contacting with the non-purified liquid or a purified liquid, and a wall portion of the hollow body defined between the outer peripheral surface and the inner peripheral surface, which is formed with a plurality of through holes for flowing a liquid after purification in the axial direction.

REFERENCES:
patent: 2781913 (1957-02-01), Thompson
patent: 3747765 (1973-07-01), Nowak
patent: 4072616 (1978-02-01), Rohlig
patent: 4645596 (1987-02-01), Kuwajima
patent: 4695301 (1987-09-01), Okajima et al.
patent: 4894158 (1990-01-01), Morita et al.
patent: 4921607 (1990-05-01), Langley
patent: 5088554 (1992-02-01), Arterbury et al.
patent: 5098571 (1992-03-01), Maebashi

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