Filter device for extruders having a screen plunger with longitu

Details Filter device for extruders having a screen plunger with longitu Filter device for extruders having a screen plunger with longitu

1995-04-27

1996-11-26

Walker, W. L.

Liquid purification or separation

Plural distinct separators

Filters

210324, 210359, 210412, 210489, 2104931, 425197, 425199, B01D 2952, B01D 2966

Patent

active

055782078

ABSTRACT:
The invention relates to a filter device for extruders and injection-molding machines, the screen elements being formed by a candle filter and, if required, by a plurality of candle filters, which are arranged in the circumferential direction on the screen plunger, extending parallel to the longitudinal axis of the screen plunger, and are flowed through from the outside inward for filtering purposes and from the inside outward for backwashing purposes.

REFERENCES:
patent: 4755290 (1988-07-01), Neuman et al.
patent: 4849103 (1989-07-01), Schmidt et al.
patent: 5062952 (1991-11-01), Neuman
patent: 5122286 (1992-06-01), Kreyenborg et al.
patent: 5141631 (1992-08-01), Whitman
patent: 5246660 (1993-09-01), Tsutsumi
patent: 5462653 (1995-10-01), Hills

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