Apparatus for passing stock into a headbox of a paper...

Details Apparatus for passing stock into a headbox of a paper... Apparatus for passing stock into a headbox of a paper...

D - Textiles, Paper

21

D

D21D 5/26 (2006.01) D21F 1/00 (2006.01)

Patent

CA 2433331

The invention relates to an apparatus for passing stock to a headbox (100) of a paper machine or equivalent. The apparatus comprises a deaeration tank (11) which is provided with vacuum by means of a vacuum pump (P0) or another device. The deaeration tank (11) comprises an inlet duct (10) through which it is supplied with wire water. The deaeration tank (11) comprises a discharge duct (12) and, at the discharge end thereof, an overflow (14) for the wire water in the discharge duct (12). Said overflow (14) of the discharge duct (12) is located below the deaeration tank (11) and opens to a free air space, and that the discharge duct (12) includes a branch duct (15a1) for a flow which is passed to the headbox (100).

L'invention se rapporte à un appareil permettant de faire passer de la pâte à papier dans la caisse de tête (100) d'une machine à papier ou équivalent. Ledit appareil comporte un réservoir de désaération (11) dans lequel une pompe à vide (P¿0?) ou un autre dispositif fait régner un vide. Le réservoir de désaération (11) comprend un conduit d'entrée (10) permettant son alimentation en eau pour la table plate de fabrication. Ce réservoir de désaération (11) comporte également un conduit d'évacuation (12) dont l'extrémité d'évacuation est pourvue d'un trop plein (14) destiné à l'eau pour la table plate. Le trop-plein (14) de ce conduit d'évacuation (12) est situé en-dessous du réservoir de désaération (11) et il débouche dans un espace d'air libre, et le conduit d'évacuation (12) inclut un conduit secondaire (15a¿1?) destiné à un flux qui est amené à passer dans la caisse de tête (100).

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