D - Textiles – Paper – 21 – D
Patent
D - Textiles, Paper
21
D
D21D 5/16 (2006.01)
Patent
CA 2624767
A screen cylinder comprising screen slots (3) and accept channels (8) for directing the portion penetrated the screen slots (3) to an accept side (9) of the screen cylinder (1) of the fibre pulp suspension fed into a feed side (10) of the screen cylinder (1). At least one feed side surface (4) is provided between the screen slots (3) and the accept channels (8) comprise at least one first surface (5) of the accept channel (8) and at least one second surface (6). At least a third of the total length of the accept channel (8) is arranged in a direction opposite to a feed flow direction (A) of the fibre pulp suspension in relation to a normal (19) of a tangent (18) of the screen cylinder (1), which is arranged to pass through the screen slot (3).
La présente invention concerne un cylindre de tamis qui comprend des fentes de tamis (3) et des canaux d~admission (8) servant à guider la partie pénétrant les fentes de tamis (3) vers un côté admission (9) du cylindre de tamis (1) destiné à la suspension de pâte fibreuse acheminée du côté alimentation (10) du cylindre de tamis (1). Au moins une surface latérale d~alimentation (4) est disposée entre les fentes de tamis (3), et les canaux d~admission (8) se composent d~au moins une première surface (5) de canal d~admission (8) et d~au moins une seconde surface (6). Un tiers, au moins, de la longueur totale du canal d~admission (8) est disposé selon une direction opposée à celle de l~écoulement de l~alimentation (A) en suspension de pâte fibreuse par rapport à la normale (19) d~une tangente (18) du cylindre de tamis (1), qui est agencée de manière à traverser la fente de tamis (3).
Metso Paper Inc.
Ridout & Maybee Llp
LandOfFree
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