Title:
ウェブ走行制御用ブローボックス
Document Type and Number:
Japanese Patent JP2005508460
Kind Code:
A
Abstract:
A blow box (18) for supporting the web run in a paper machine or the like, which blow box comprises members for maintaining a negative pressure at least in one negative pressure region (24) between the wire (20) and the blow box. The members comprise a blocking member (30, 32), which is arranged, regarding the wire's running direction, at the beginning and/or at the end of said negative pressure region, which extends across the wire and projects towards the wire, and which is movable in relation to the blow box, and blowing members (34, 36), with which air is ejected with blows between said blocking member and the wire from said negative pressure region and/or with which air is prevented from entering this negative pressure region. The blocking member is connected to the blow box by a hinge member (40, 42), which allows the blocking member to rotate around the articulation point of the hinge member due to the pressure difference between the pressure acting on the blocking member's blocking surface (30', 32') directed towards the wire and the pressure acting on the blocking member's back surface (50, 50') directed away from the wire.
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Inventors:
Lame, juha
Application Number:
JP2003542702A
Publication Date:
March 31, 2005
Filing Date:
November 07, 2002
Export Citation:
Assignee:
Metso Paper Inc.
International Classes:
D21F5/04; D21G9/00; (IPC1-7): D21F5/04
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Hiroshi Kida
Shinsuke Onuki
Tadashige Ito
Hiroshi Kida