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1. 发明授权

US06962647B2 Headbox for a paper machine, board machine, pulp machine or equivalent 失效
标题翻译：纸箱，造纸机，纸板机，纸浆机或等同物
公开(公告)号：US06962647B2
公开(公告)日：2005-11-08
申请号：US10275616
申请日：2001-05-03
申请人： Markku Ronnila , Jaakko Jantunen , Erkki Ilmoniemi
发明人： Markku Ronnila , Jaakko Jantunen , Erkki Ilmoniemi
IPC分类号： D21F1/02 , D21F1/00 , D21F1/06
CPC分类号： D21F1/026 , D21F1/02
摘要： A headbox, for example, in a pulp or board machine, is suitable for high basis weights which are over 400 g/m2 and for high fiber suspension consistencies which are in a range of 2–5%. The headbox has a turbulence part (1), into which a fiber suspension flows from a tube bank (2), and a slice part (3) which is situated after the turbulence part and from which the fiber suspension flows to a forming section of a fibrous web. The turbulence part (1) of the headbox has at least two passages (5, 6), which converge in the flow direction of the fiber suspension towards the slice part (3). In that connection, the fiber suspension flow is first fluidized in a tortuous turbulence passage part (11) and, after that, it decelerates in another widening deceleration passage (12).
摘要翻译：例如，在纸浆或纸板机中的流浆箱适用于超过400g / m 2的高基重，对于高纤维悬浮液稠度为2-5％。流浆箱具有湍流部分（1），纤维悬浮液从管堤（2）流动到该湍流部分（1），并且位于湍流部分之后的切片部分（3），纤维悬浮液从该部分流出到纤维网。流浆箱的湍流部分（1）具有至少两个通道（5,6），其沿纤维悬浮液的流动方向朝向切片部分（3）会聚。在这方面，纤维悬浮液流动首先在曲折的湍流通道部分（11）中流化，然后在另一加宽减速通道（12）中减速。

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