D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 9/06 (2006.01) B01D 33/06 (2006.01) B30B 9/20 (2006.01) D21C 9/18 (2006.01) B01D 33/60 (2006.01) D21F 1/78 (2006.01)
Patent
CA 2686784
The invention relates to a washing arrangement (100) comprising one or possibly two co-operating cylindrical press rolls (102), each having a perforated outer surface (104). A guide surface (106) is provided at a distance from the perforated outer surface (104) and encloses the respective press roll in the circumferential direction over at least 225° of the roll's circumference, wherein a pulp passage (108) is provided between the perforated outer surface and the guide surface. During operation, pulp that is fed into the pulp passage is guided in a direction of rotation of the respective press roll and is pressed in a pinch (110) between the press rolls. The radial distance (D) between the outer surface (104) of the press roll (102) and the guide surface (106) is substantially the same throughout a portion of the pulp passage (108) in the circumferential direction.
Ensemble de lavage (100) comprenant un, éventuellement deux rouleaux de presse cylindriques coopérants (102) qui présentent chacun une surface extérieure perforée (104). Une surface de guidage (106) située à une certaine distance de la surface extérieure perforée (104) recouvre le rouleau correspondant dans le sens de la circonférence sur au moins 225 ° de la circonférence du rouleau. Un passage (108) est ménagé pour la pâte entre la surface extérieure perforée et la surface de guidage. Pendant la marche, la pâte qui va alimenter le passage (108) est guidée dans le sens de rotation des rouleaux respectifs et comprimée dans la zone de pincement (110) entre les rouleaux de compression. La distance radiale (D) entre l a surface extérieure (104) du rouleau (102) et la surface de guidage (106) est sensiblement la même sur toute la partie du passage pour pâte (108) dans le sens circonférentiel.
Fetherstonhaugh & Co.
Metso Paper Inc.
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