A press roll for washing and/or dewatering pulp, and a...

D - Textiles – Paper – 21 – C

Patent

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Details

D21C 9/06 (2006.01) B30B 9/20 (2006.01) D21C 9/18 (2006.01)

Patent

CA 2662387

A press roll for washing and/or dewatering pulp, comprising an axial core (102) and a mantle section provided around the axial core, to which mantle section at least one perforated roll plate (108) is attached. The roll plate (108) has two short sides and two long sides, and extends around the entire circumference of the press roll. The roll plate (108) comprises at least two mounting openings (112, 202, 212) which are distributed between the two short sides of the roll plate (108) along the longitudinal extension of the roll plate (108) and the entire circumference of the press roll, and the press roll comprises a fixing pin (206) for each mounting opening (112, 202, 212), which fixing pin (206) is anchored in the mantle section and surrounded by the inner surface of its mounting opening (112, 202, 212). A roll press comprising such a press roll. A method for manufacturing or repairing such a press roll, which method comprises the steps: attaching (402, 403) the at least one roll plate (108) to the mantle section so that its long sides extend along the entire circumference of the press roll; drilling (404) at least two mounting openings (112, 202, 212) in the roll plate (108), which are distributed between the two short sides of the roll plate (108) along the longitudinal extension of the roll plate (108) and the entire circumference of the press roll; inserting (407) a fixing pin (206) in each mounting opening (112, 202, 212); and anchoring (407) each fixing pin (206) in the mantle section so that it is surrounded by the inner surface of its mounting opening (112, 202, 212).

Rouleau de presse pour lavage et/ou égouttage de pulpe, comprenant un noyau axial (102) et une section de manchon entourant le noyau axial, à laquelle section de manchon est fixée au moins une plaque de rouleau perforée (108). Cette plaque de rouleau (108) possède deux côtés courts et deux côtés longs, et entoure toute la circonférence du rouleau de presse. La plaque de rouleau (108) comprend au moins deux ouvertures de montage (112, 202, 212) qui sont réparties entre les deux côtés courts de la plaque de rouleau (108) le long de l'extension longitudinale de la plaque de rouleau (108) et de toute la circonférence du rouleau de presse, et le rouleau de presse comprend un ergot de fixation (206) pour chaque ouverture de montage (112, 202, 212), lequel ergot de fixation (206) est ancré dans la section de manchon et entouré par la surface interne de son ouverture de montage (112, 202, 212). Presse à rouleau comprenant ce rouleau de presse. Procédé de fabrication ou de réparation de ce rouleau de presse, lequel procédé comprend les étapes consistant à : fixer (402, 403) la ou les plaques de rouleau (108) à la section de manchon de telle sorte que ses côtés longs entourent toute la circonférence du rouleau de presse ; percer (404) au moins deux ouvertures de montage (112, 202, 212) dans la plaque de rouleau (108), qui sont réparties entre les deux côtés courts de la plaque de rouleau (108) le long de l'extension longitudinale de la plaque de rouleau (108) et de toute la circonférence du rouleau de presse ; insérer (407) un ergot de fixation (206) dans chaque ouverture de montage (112, 202, 212) ; et ancrer (407) chaque ergot de fixation (206) dans la section de manchon de façon à ce qu'il soit entouré par la surface interne de son ouverture de montage (112, 202, 212).

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