D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 1/48 (2006.01)
Patent
CA 2201513
Paper drainage and drying is required in modern high speed paper machines where the number of suction boxes is limited. The present method provides a procedure for the drainage of the wire and/or press section of a paper machine, in which procedure at least one gap and the suction pipe is connected to a vacuum device to develop a vacuum at least in this vacuum pipe, and in which procedure a felt, wire or equivalent is moved over the gap of the suction pipe, water being thus drained from the felt, wire or equivalent. In the procedure, the vacuum capacity is adjusted by measuring and/or adjusting at least the amount of water drained from the suction pipe and, on the basis of the measured data, adjusting the vacuum capacity by means of regulating devices. The invention also relates to an apparatus for adjusting the vacuum capacity.
Procédé d'évacuation de l'eau de la section toile et/ou presse d'une machine à papier, selon lequel au moins un tuyau d'aspiration (1) est pourvu d'au moins un orifice (2), et raccordé à un dispositif à vide (4) servant à faire le vide au moins dans ce tuyau d'aspiration. En outre, selon le procédé, on fait passer sur l'orifice du tuyau d'aspiration un feutre, une toile ou analogue, l'eau étant de ce fait évacuée du feutre, de la toile ou analogue. Selon ledit procédé, on règle le degré de dépression en mesurant et/ou en réglant au moins la quantité d'eau évacuée par le tuyau d'aspiration (1) et, en fonction des données mesurées, on règle le degré de dépression à l'aide de dispositifs de régulation (11, 12). On a également prévu un appareil de réglage du degré de dépression.
Ecopump Oy
Gowling Lafleur Henderson Llp
LandOfFree
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