Concentric filter elements

Liquid purification or separation – Plural distinct separators – Filters

Patent

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Details

21033301, 210334, 210342, 210347, B01D 2926

Patent

active

045252750

ABSTRACT:
A filter, especially suitable for liquids which are difficult to filter and comprising a closed cylindrical filter container (1) having an inlet (5) for the liquid to be filtered and an outlet (7) for the filtrate and enclosing a filter unit (3) comprising one or more filter elements (13-15) which are mounted substantially concentrically inside the filter container (1). At one end, preferably the bottom end in case of vertically standing containers, the filter container has a bottom cover (2) which can be opened, and the filter element or elements (13-15) are mounted so that they can be extracted from and be retracted to the filter container (1) through said cover (2). The filter unit may comprise several filter elements (13-15) formed as separate units and mounted concentrically inside each other. The filter elements are designed so that an inner filter element over a collar (16-18) carries and is sealed against the adjacent outer filter element. Each filter element comprises an annular cylinder chamber, in which the filtrate is collected and can be removed through draining tubes to an upper collection chamber (45) from which the filtrate is removed from the container.

REFERENCES:
patent: 803238 (1905-10-01), Lynn
patent: 803239 (1905-10-01), Lynn
patent: 2522904 (1950-10-01), Slepicka
patent: 2598322 (1952-05-01), Vokes
patent: 2854142 (1958-09-01), Baker
patent: 3349919 (1967-10-01), Royer et al.
patent: 3980560 (1976-09-01), Eades
patent: 4265771 (1981-05-01), Lennartz et al.
patent: 4318811 (1982-03-01), Ziller

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