D - Textiles – Paper – 21 – D
Patent
D - Textiles, Paper
21
D
D21D 5/06 (2006.01) D21C 9/06 (2006.01)
Patent
CA 2600752
The present invention relates to a washing apparatus for washing of cellulose pulp comprising: a rotatable drum (2), a stationary support (14), a stationary cylindrical casing (18), that encloses the drum, whereby an annular space (20) is defined between the casing and the drum, a number of seals (22) that are arranged on the casing and that seals between the casing and the drum, such that the annular space is divided in a formation zone (F), at least one washing zone (Tl, T2), and a discharge zone (U), and at least a reinforcing frame rib (24) , that is attached to the casing. The reinforcing frame rib (24) extends around the entire casing (18) for fixing the casing in a predetermined form, whereby detrimental deformation of the casing (18), when washing the paper pulp at overpressure, is prevented.
La présente invention concerne un appareil de lavage de la pâte à papier comprenant : un tambour rotatif (2) ; un support fixe (14) ; un caisson cylindrique fixe (18) qui entoure le tambour et crée un espace annulaire (20) autour de celui-ci ; plusieurs joints (22) disposés sur le caisson et entre le caisson et le tambour qui permettent de diviser l'espace annulaire en une zone de formation (F), au moins une zone de lavage (Tl, T2) et une zone d'évacuation (U) ; au moins une nervure de renforcement (24) fixée au caisson. La nervure de renforcement (24) enveloppe la totalité du caisson (18) pour lui conserver une forme déterminée et plus particulièrement pour empêcher toute déformation préjudiciable du caisson (18) lors du lavage de la pâte à papier en surpression.
Andersson Rickard
Bylander Johan
Henriksson Magnus
Lundberg Joergen T.
Fetherstonhaugh & Co.
Metso Paper Inc.
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