Textiles: fluid treating apparatus – Machines – Liquid flowing
Patent
1981-01-09
1983-01-18
Coe, Philip R.
Textiles: fluid treating apparatus
Machines
Liquid flowing
210388, D21D 502
Patent
active
043686281
ABSTRACT:
An apparatus and method are provided for treating flowing suspensions, extracting liquid from the suspensions and, if desired, introducing a treatment liquid into the flowing suspensions. Suspension flows in an elongated container from an inlet to an outlet in a first direction, and a screen surface is mounted within the container for screening a portion of the liquid from the suspension. The screen body is elongated in the direction of elongation of the container and defines a screen cavity volume within it, the volume tapering inwardly in the first direction. A baffle is disposed within the screen cavity volume. During movement of the screen in a second direction, opposite the first direction, at a higher speed, backflushing of the screen takes place, substantially evenly over the whole of the screen surface. Displacement liquid is introduced into the container, at at least one level along the inward taper of the screen body, so that during liquid extraction a crosswise displacement with treatment liquid is obtained through substantially all suspension flowing through the container. The container preferably has a vertical orientation, the inlet disposed above the outlet.
REFERENCES:
patent: 3475271 (1969-10-01), Laakso
patent: 3557583 (1971-01-01), Rich et al.
patent: 3563891 (1971-02-01), Richter
patent: 3704603 (1972-12-01), Richter
patent: 4029579 (1977-06-01), Jacobsen et al.
patent: 4041560 (1977-08-01), Jacobsen
patent: 4088579 (1978-05-01), Kocsanyi et al.
Coe Philip R.
Kamyr AB
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