Arrangement and method for treatment of cellulose pulp...

D - Textiles – Paper – 21 – C

Patent

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D21C 9/06 (2006.01)

Patent

CA 2609285

The invention relates to a washing arrangement (100) for washing and dewatering of cellulose pulp, comprising a rotatable drum (10) having a plurality of outer compartments (12) on the drum for the pulp to be washed, which compartments are defined by axial compartment walls (12b) distributed along the circumference of the drum, a stationary cylindrical casing (20) that encloses the drum, whereby an annular space (30) is defined between the casing and the drum and, where the annular space by longitudinal seals (40) in the axial direction of the drum is divided in zones (F, Tl, T2, U) for forming, washing and discharge of the pulp. The function of the longitudinal seals is optimized by units (60) for seal adjustment having measuring means for measuring a force acting on one of the longitudinal seals in direction from the drum and moving means for automatically moving the longitudinal seal substantially in the radial direction of the drum according to a predetermined pattern based on the measured force.

La présente invention a trait à un agencement de lavage (100) pour le lavage et l'épaississement de pâte à papier, comportant un tambour rotatif (10) comprenant une pluralité de compartiments externes (12) sur le tambour pour le lavage de la pâte, lesdits compartiments étant définis par des parois de compartiment axiales (12b) réparties selon la circonférence du tambour, un boîtier cylindrique stationnaire (20) renfermant le tambour, définissant ainsi un espace annulaire (30) entre le boîtier et le tambour et, où l'espace annulaire grâce à des joints longitudinaux (40) dans la direction axiale du tambour est divisé en des zones (F, T1, T2, U) pour la formation, le lavage et l'évacuation de la pâte. La fonction des joints longitudinaux est optimisée par des unités (60) pour l'ajustement de joints comportant des moyens de mesure permettant la mesure de la force agissant sur un des joints longitudinaux dans la direction en éloignement du tambour et des moyens de déplacement pour le déplacement automatique du joint longitudinal selon une configuration prédéterminée en fonction de la force mesurée.

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