Polymer filter with backflush pump

Details Polymer filter with backflush pump Polymer filter with backflush pump

1991-06-07

1992-08-25

Theisen, Mary Lynn

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Filter cleaning

210107, 210136, 210138, 2103331, 210391, 210411, 210412, 2104161, 210489, 425199, B01D 3344

Patent

active

051416310

ABSTRACT:
A filter for flowing polymer having a filter element progressively advanced between an on-stream position communicating between the upstream and downstream passages and a backflush position. In the latter position, filtered polymer is forced through a segment of the element in the direction opposite to on-stream flow. The filter is advanced in steps alternately with the energization of a pump for creating the backflush pressure. The steps are determined to cause each filter portion to remain in the backflush position for at least two consecutive steps.

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