公开(公告)号：US08236137B2

公开(公告)日：2012-08-07

申请号：US13102688

申请日：2011-05-06

申请人： Wolfgang Ruf ,  Konstantin Fenkl ,  Markus Häuβler

发明人： Wolfgang Ruf ,  Konstantin Fenkl ,  Markus Häuβler

IPC分类号： D21F1/18

CPC分类号： D21F1/02 ,  D21F1/022

摘要： The invention relates to a headbox which comprises a feed device feeding the at least one fiber suspension, a perforated distribution pipe plate arranged immediately downstream thereof and having a plurality of channels arranged in lines and columns, an intermediate channel arranged downstream thereof, extending over the width of the headbox and having a plurality of means for dosing a fluid in partial fluid streams to the at least one fiber suspension in a preferably adjustable/controlled manner, the means being spaced apart from each other in the width direction of the headbox and the individual means comprising a plurality of dosing channels having respective dosing channel openings and an opening center line, arriving at different levels and being connected to a common supply channel. The headbox further comprises a downstream turbulence generator having a plurality of flow channels arranged in lines and columns and a headbox nozzle which is directly contiguous to the turbulence generator and which has a nozzle gap. The headbox according to the invention has a system pressure loss which is substantially composed of a first pressure loss between the feed device and the intermediate channel and a second pressure loss in the turbulence generator, the second pressure loss and the first pressure loss being in a ratio ranging from 8:1 to 1:1, preferably from 4:1 to 1:1, particularly from 2:1 to 1:1.

摘要翻译： 本发明涉及一种流浆箱，其包括供给至少一个纤维悬浮液的进料装置，一个布置在其下游的多孔分配管板，并且具有排列成直线和立柱的多个通道，布置在其下游的中间通道， 流浆箱的宽度并且具有多个用于将部分流体流中的流体以优选可调节/受控的方式计量至少一个纤维悬浮液的装置，所述装置在流浆箱的宽度方向上彼此间隔开， 各个装置包括具有相应配量通道开口和开口中心线的多个计量通道，达到不同的水平并连接到共同的供应通道。 流浆箱还包括下游湍流发生器，其具有以行和列排列的多个流动通道和与湍流发生器直接邻接且具有喷嘴间隙的流浆箱喷嘴。 根据本发明的流浆箱具有系统压力损失，其基本上由进料装置和中间通道之间的第一压力损失和湍流发生器中的第二压力损失构成，第二压力损失和第一压力损失在 比率为8:1至1:1，优选4:1至1:1，特别是2:1至1:1。