发明名称 |
Pocket ventilation and sheet support system in a papermaking machine dryer section |
摘要 |
A dryer section in a papermaking machine has two reversing rolls to form a pocket between each pair of dryers in a dryer tier. The first reversing roll is a vacuum roll and the second reversing roll is a grooved roll. A blow box is disposed between the two rolls, the blow box provides suction for the grooved roll and provides vacuum which restrains a web on the dryer fabric as it travels between the first and the second rolls. The blow box also provides a supply of make-up air which extends in a cross machine direction along the pocket formed by the two reversing rolls. The blow box also supports a pivoting foil which is positioned against the dryer fabric as it moves from a first dryer, towards the first reversing roll. The foil defines a region of low pressure which restrains the web as it travels between the first dryer and the first reversing roll.
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申请公布号 |
US5887358(A) |
申请公布日期 |
1999.03.30 |
申请号 |
US19970789971 |
申请日期 |
1997.01.31 |
申请人 |
BELOIT TECHNOLOGIES, INC. |
发明人 |
BISCHEL, KEVIN H.;GRUNDER, THOMAS K. |
分类号 |
D21F5/04;(IPC1-7):D21F5/00 |
主分类号 |
D21F5/04 |
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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