发明名称 |
Headbox with a vertical partition between perforated rolls |
摘要 |
A headbox for a paper machine, with a main chamber through the lower part of which flows fiber suspension in the longitudinal machine direction. The main chamber has on the upstream end a first perforated roll and a machine-wide feed channel as well as on the downstream end a second perforated roll and a machine-wide nozzle type outlet channel. Provided between the perforated rolls is a vertical partition which is vertically adjustable, creating between the bottom of the main chamber and the partition a machine-wide channel section which is variable in its height. The downstream outside surface of the partition has a convex shape, in a fashion such that the clearance of the channel section increases in the direction of flow.
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申请公布号 |
US5277765(A) |
申请公布日期 |
1994.01.11 |
申请号 |
US19920900952 |
申请日期 |
1992.06.18 |
申请人 |
VOITH, INC. |
发明人 |
GRAF, EDWIN X.;STREBIG, JAMES L. |
分类号 |
D21F1/02;(IPC1-7):D21F1/02 |
主分类号 |
D21F1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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