SEALING ARRANGEMENT FOR A PULP DEWATERING ARRANGEMENT

摘要

The arrangement is for washing and dewatering a fiber pulp suspension. The arrangement comprises two hollow, circular-cylindrical screen members that have evacuation chambers arranged inside the screen members for leading off liquid. The screen members rotate counter to each other to form a nip. A t least one of the screen members is arranged in a trough that partially encloses the jacket of the screen member and, in the direction of rotation o f the screen member, converges towards the jacket of the screen member. A sealing arrangement for a pulp head box distributes the pulp onto the jacket surface of the screen members. By forming a progressively decreasing gap B-A at the pulp head box counter to the rotation of the screen member, a simple self-sealing of the pulp suspension can be obtained which allows fibe r residues to be returned to the dewatering zone.