Textiles: fluid treating apparatus – Machines – With successive fluids and plural tubs
Patent
1992-05-04
1994-01-04
Jones, W. Gary
Textiles: fluid treating apparatus
Machines
With successive fluids and plural tubs
162 60, 210772, 210401, 210407, 68158, D21C 902, D06F 3100
Patent
active
052750248
ABSTRACT:
A wire-type pulp washing machine includes an endless moving foraminous wire which extends about a breast roll defining an on-running end and a couch roll defining an off-running end with a generally horizontal upper run of the wire extending between the rolls with showers providing a counter-current washer. The endless wire forms a wire return run having a horizontal wire section beneath the upper run. Pulp which has been washed on the upper counter-current washer may be removed and subjected to a chemical action, such as a bleaching action, and then reapplied to a horizontal return run section of the wire by a headbox to form a pulp mat on the inside surface of the wire. This pulp mat is subject to further countercurrent washing by the application of wash water to an upper surface of the mat and by draining of the wash water through the wire by suction boxes. This wash water may advantageously be applied as the wash water to the last stage of the counter-current washer along the upper run. The pulp mat is then removed from the lower return run section.
REFERENCES:
patent: 4154644 (1979-05-01), Ericsson
patent: 4501662 (1985-02-01), Biondetti
patent: 4543155 (1985-09-01), Stawicki
patent: 4722793 (1988-02-01), Seifert et al.
patent: 4735684 (1988-04-01), Seejnow
patent: 4827741 (1989-05-01), Luthi
patent: 5045181 (1991-09-01), North
patent: 5122229 (1992-06-01), Seifert
patent: 5133832 (1992-07-01), Gilkey
Jones W. Gary
Lamb Brenda
The Black Clawson Company
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