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公开(公告)号:US4478684A
公开(公告)日:1984-10-23
申请号:US512755
申请日:1983-07-11
CPC分类号: D21F1/56
摘要: The papermaking machine contains at least one water pervious dewatering wire or the like for forming a fiber web, particularly one layer of a multi-ply fiber web, and at least one headbox for infeeding a fiber stock suspension to be applied in the form of a free jet to the dewatering wire. Between the headbox and a section of the dewatering wire extending along the headbox there is arranged at least one deflecting device for separating and withdrawing a partial flow or stream of the fiber stock suspension. The deflecting device can be inserted into a marginal region of the free stock jet. Such an arrangement enables, for example, a continuous or infinitely variable adjustment of the format width of the fiber web to be produced. During use of the deflecting device, the partial flow or stream of the stock is deflected prior to the formation of the fiber web and is kept away from the following operational or working sections of the papermaking machine, in particular from a second fiber web or ply located thereat. If desired, the deflected partial stock flow can be returned to the fiber stock suspension supply or infeed system preceding or upstream of the headbox for re-use of the unmixed fiber stock material.
摘要翻译: 造纸机包含至少一个用于形成纤维网,特别是一层多层纤维网的可透水的脱水丝线,以及至少一个流浆箱,用于将纤维原料悬浮液以 自由射流到脱水丝。 在流浆箱和沿着流浆箱延伸的脱水丝的一部分之间布置有至少一个偏转装置,用于分离和取出纤维原料悬浮液的部分流或物流。 偏转装置可以插入自由原料射流的边缘区域。 这种布置使得例如可以连续或无级地调节要生产的纤维网的格式宽度。 在使用偏转装置期间,在形成纤维幅材之前,原料的部分流动或流动被偏转,并且远离造纸机器的以下操作或工作部分,特别是从第二纤维网或层 位于那里 如果需要,偏转的部分原料流可以返回到流浆箱前面或上游的纤维原料悬浮液供应或进料系统,以重新使用未混合的纤维原料。