Liquid purification or separation – Plural distinct separators – Filters
Patent
1994-10-18
1996-05-28
Dawson, Robert A.
Liquid purification or separation
Plural distinct separators
Filters
210409, 210420, 2104331, 210486, B01D 2946
Patent
active
055208053
ABSTRACT:
The present invention relates to a filter apparatus for separating solids from a liquid, said apparatus comprising an outer shell (1), a pipe (2) attached thereto for liquid infeed, a filter cartridge (3) formed by ring-shaped elements placed inside said outer shell, the rings being spaced at a distance from each other so as to provide horizontally outward flaring slits (4) between the rings, through which slits the liquid is adapted to flow, a discharge pipe (5) for the removal of the liquid from the space between the outer shell and the filter cartridge, and a second discharge pipe (6) for the removal of solids from inside the filter cartridge. Conventional filter equipment have a complicated construction and require the use of separate cleaning equipment. In the filter according to the invention the leading edges (7) of the ring elements of the filter cartridge, with regard to the downward main flow direction of the liquid, extend deeper into the core of the filter cartridge than the trailing edges (8) of the ring elements.
REFERENCES:
patent: 2569748 (1951-10-01), DeGrave
patent: 2998064 (1961-08-01), Lang
patent: 3794179 (1974-02-01), Doucet
patent: 4113626 (1978-09-01), Detcher
patent: 5024771 (1991-06-01), Chiarito
patent: 5332499 (1994-07-01), Spencer
Dawson Robert A.
Walker W. L.
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