发明授权
- 专利标题: Long nip press roll arrangement
- 专利标题(中): 长辊压辊布置
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申请号: US318171申请日: 1989-03-02
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公开(公告)号: US4923570A公开(公告)日: 1990-05-08
- 发明人: Karl Steiner , Andreas Schutte , Hans Flamig
- 申请人: Karl Steiner , Andreas Schutte , Hans Flamig
- 申请人地址: DEX
- 专利权人: J. M. Voith GmbH
- 当前专利权人: J. M. Voith GmbH
- 当前专利权人地址: DEX
- 优先权: DEX3808293 19880312
- 主分类号: B30B9/20
- IPC分类号: B30B9/20 ; D21F3/02 ; D21F3/04 ; D21F3/08
摘要:
A long nip press roll for removing water from a traveling fiber web. A rigid support beam has at least one recess in its periphery for receiving a radially movable hydraulically operated press shoe. A flexible tubular press shell is wrapped around the support beam and the press shoe. The concave outer surface of the press shoe presses the press shell against a backing roll for pressing upon a fiber web against a felt belt passing through the nip. The press shell has a smooth outer surface in contact with the web. At its outlet side from the press nip, the press shoe has a convexly curved guide surface over which the press shell and the paper web travel together and that guide surface is also wrapped for a distance by the felt belt. This separates the web from the felt belt and the web travels around on the press shell. A ledge inside the press shell and/or a removal roll at the outside of the press shell separate the web from the outside of the press shell. Plural press shoes defining plural press nips may be provided.
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