Blow-suction box or equivalent for a paper machine or board...

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 5/04 (2006.01)

Patent

CA 2287353

The invention concerns a blow-suction box or equivalent for a paper machine or board machine, which box (20) comprises at least a pressure chamber (22) and which box (20) is placed in the vicinity of a cylinder, roll, or equivalent, from which cylinder, roll or equivalent a web and/or a wire is/are fitted to run past the box (20). In connection with the pressure chamber (22), a nozzle slot (32) has been arranged, out of which a sealing blowing is fitted to be applied towards the cylinder, roll or equivalent and/or towards the web and/or wire running on its face in order to disintegrate the boundary-layer air flow carried along with the web and/or the wire. In connection with the nozzle slot (32), an air guide (35) made of a resilient material has been fitted in order to direct the sealing blowing and to enhance the sealing further.

L'invention concerne une caisse aspirante ou équivalent pour une machine à papier ou à carton, cette caisse (20), placée à proximité d'un cylindre, rouleau, ou équivalent, comprenant au moins une chambre à pression (22). Une feuille continue et/ou une toile peuvent, à partir dudit cylindre, rouleau, ou équivalent, traverser cette caisse (20). La fente d'un pulvérisateur (32) est reliée à ladite chambre à pression (22), une fermeture étanche par soufflage étant ménagée dans cette fente, de manière à être appliquée à proximité du cylindre, rouleau, ou équivalent, et/ou de la feuille continue et/ou la toile passant sur sa surface, afin de désintégrer l'air de la couche limite s'écoulant le long de ladite feuille continue et/ou de la toile. Un dispositif d'orientation de l'air (35), relié à ladite fente de pulvérisateur (32), est fabriqué dans un matériau élastique et disposé de manière à pouvoir placer la fermeture étanche par soufflage, et ainsi améliorer son étanchéité.

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