B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 33/21 (2006.01) D21C 9/18 (2006.01) D21D 5/02 (2006.01)
Patent
CA 2301164
An apparatus for filtering mat forming suspensions, such as fibre pulp suspensions, has rotating annular discs (6) with peripheral chambers (13) arranged to operate as droplegs on the ascending parts of the discs. To speed up the emptying of the chambers there are venting means (21, 23) effective to supply air into the chambers at the upwardly moving parts of the discs, when the chambers are at least partly above a body of the suspension to be filtered during rotation of the discs.
Cet appareil, qui sert à filtrer des suspensions formant un mat ou une nappe, telles que des suspensions de pâte fibreuse, comprend des disques annulaires rotatifs (6) comportant des chambres périphériques (13) disposées de façon à agir comme siphons sur les parties montantes des disques. Pour accélérer le vidage des chambres, on prévoit des évents (21, 23) produisant une entrée d'air dans les chambres au niveau des parties montantes des disques, lorsque les chambres se trouvent au moins partiellement au-dessus du corps de la suspension à filtrer pendant la rotation des disques.
Fetherstonhaugh & Co.
Gl&v/celleco Ab
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