B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
92/34
B07B 1/22 (2006.01) D21D 5/06 (2006.01)
Patent
CA 1329333
(57) Abstract The invention relates to a method and apparatus for separating knots. Especially the method and the apparatus are meant to be adjusted in separating knots from the fibre suspensions of wood processing industry. According to the prior art a problem acknowledged has been the quick wear of the screen surface of the knotter when the screen surface has been profiled. On the other hand the ability to separate with the unprofiled screen has been unsatisfactory. When using a profiled screen cylinder (5) it has been noticed in the performed tests to be most prefarable to feed the pulp from the connections (2) in the direction of rotation of the screen cylinder and also to discharge the reject from the connections (4) and the accept from the connections (3) of the cylinder (5) in the direction of rotation. A result from this is not only lesser wear of the screen surface, but also a significantly smaller consumption of power per pulp ton than in the apparatuses in accordance with the prior art. Fig. 2
556763
Henricson Kaj
Repo Erkki
Ronkonharju Hannu
Ahlstrom Machinery Oy
Gowling Lafleur Henderson Llp
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