Arrangement and method for sealing of a pocket space between...

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 5/04 (2006.01) B65H 23/24 (2006.01) B65H 23/28 (2006.01) D21F 7/04 (2006.01)

Patent

CA 2610807

The invention relates to an arrangement and a method for sealing of a pocket space between drying cylinders (2, 3) in a paper machine or similar. In the method for sealing of the pocket space: a wire (5) is moved supported by the first and the second cylinder (2, 3, 4), a gap between the pocket space (15) and the space outside (24) it is sealed by a runnability component (6), which comprises at least a sealing surface (19, 22) and a blow nozzle (21 ) provided with a nozzle slot (26) of a size of 0.5-3.5 mm and elongated in the cross direction, the sealing surface (19, 22) is kept at a distance of 5-15 mm from the moving wire (5), air is blown with the blow nozzle (21 ) from a blow point (27) and along the sealing surface (22) towards a sealing point (16) and further via the sealing point (16) away (24) from the pocket space. The invention comprises also a runnability component (6) and a method for manufacturing the same. The parts of the runnability component are fastened together at least mainly without welding in the cross direction of the paper machine.

L'invention concerne un dispositif et un procédé d'étanchéification d'une poche entre des cylindres sécheurs (2, 3) d'une machine à papier ou similaire. Dans le procédé d'étanchéification de la poche : une toile (5) portée par les premier et second cylindres est déplacée (2, 3, 4), un espace entre la poche (15) et l'espace à l'extérieur (24) est fermé de manière étanche par un composant permettant le passage sur machine (6), qui comprend au moins une surface d'étanchéification (19, 22) et une buse de soufflage (21) dotée d'une fente (26) de 0,5-3,5 mm et de section allongée, la surface d'étanchéification (19, 22) étant maintenue à une distance de 5-15 mm de la toile en mouvement (5), de l'air est soufflé par la buse de soufflage (21) depuis un point de soufflage (27) et le long de la surface d'étanchéification (22) en direction d'un point d'étanchéification (16), et encore du point d'étanchéification (16) vers l'extérieur (24) des poches. L'invention se rapporte également à un composant permettant le passage sur machine (6) et son procédé de fabrication. Les pièces dudit composant sont fixées ensemble et au moins principalement sans soudure dans le sens travers de la machine à papier.

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