Method and device for washing the drying wire in a paper or...

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 1/32 (2006.01)

Patent

CA 2198253

The invention concerns a method for washing the drying wire in a paper or board machine, in which method the drying wire is washed and/or dried by means of a liquid and/or air jet (V, I) when the drying wire (F) runs in a dryer group in the dryer section of a paper machine while guided by drying cylinders (10), reversing rolls (11) or equivalent and by guide rolls (12). In the method, a washing liquid jet (V) is applied to the drying win (F) when the drying wire (F) runs substantially downwards from a drying cylinder (10) and/or when the drying wire (F) runs towards the next reversing roll (11) of equivalent or towards a guide roll (12). Further, the invention concerns a device for washing the drying wire in a paper machine, which device (14, 16, 17, 18, 20, 21, 22, 23, 24, 25) is placed in a dryer group in the dryer section in the paper machine and which device comprises means for producing a liquid jet and/or an air jet (V, I) so as to wash and/or to dry the drying wire (F), respectively. The device is placed in the dryer section in the paper machine in the vicinity of the drying wire (F) so that the means for producing the liquid jet (V) direct the liquid jet towards the drying wire (F) when the wire runs substantially downwards from a drying cylinder and/or substantially before the drying wire (F) runs onto the next reversing roll (11) or guide roll (12) or equivalent

Cette invention concerne un procédé pour laver la table de séchage d'une machine à papier ou à carton. Selon ce procédé, la table de séchage est lavée et/ou séchée au moyen d'un jet de liquide et/ou d'air (V, I) au moment où elle passe dans un groupe de séchage de la sécherie d'une machine à papier, guidée par des cylindres sécheurs (10), des cylindres inverseurs (11) ou leurs équivalents, et par des rouleaux guides (12). Un jet de liquide de lavage (V) est dirigé sur la table de séchage (F) quand celle-ci descend sensiblement depuis un cylindre sécheur (10) et/ou quand elle avance vers le cylindre inverseur suivant (11), ou son équivalent, ou vers un rouleau guide (12). L'invention concerne en outre un dispositif pour laver la table de séchage d'une machine à papier. Ce dispositif (14, 16, 17, 18, 20, 21, 22, 23, 24, 25), placé dans un groupe de séchage de la sécherie de la machine à papier, comprend un système pour produire un et de liquide et/ou un jet d'air (V, I) permettant de laver et/ou de sécher la table de séchage. Ce dispositif est placé à proximité de la table de séchage (F) de façon que le système de production du jet de liquide (V) dirige ce dernier sur la table de séchage (F) au moment où celle-ci descend sensiblement depuis un cylindre sécheur et/ou sensiblement avant qu'elle arrive au prochain cylindre inverseur (11), rouleau guide (12) ou équivalent.

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