Method and apparatus for intermittent compression of fibrous mat

Details Method and apparatus for intermittent compression of fibrous mat Method and apparatus for intermittent compression of fibrous mat

1990-01-29

1991-06-25

Silverman, Stanley S.

Liquid purification or separation

Processes

Separating

210396, 210408, 210541, 1525651, 68181R, 162281, B01D 3376

Patent

active

050264877

ABSTRACT:
A method and apparatus is provided for aiding in the removal of a fibrous material sheet from a smooth porous filter surface. An intermittent pattern of round-bottomed compression irregularities is impressed upon the sheet blunt round-edged device to cause it to be released from the filter surface in the areas where the irregularities are impressed by the device so that it will not stick to the filter surface nor split when it is contacted by the doctor device which guides it away from the filter surface. The spacing and the geometry of the compression pattern are according to the pulp characteristics and the operating conditions of the filter.

REFERENCES:
patent: 1475244 (1923-11-01), Rolls
patent: 2070074 (1937-02-01), Young
patent: 2363840 (1944-11-01), Denhard
patent: 2680996 (1954-06-01), Brown
patent: 3520410 (1970-07-01), Hutto, Jr.
patent: 4689119 (1987-08-01), Weldon
patent: 4919877 (1990-04-01), Parsons et al.

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