公开(公告)号：US5147509A

公开(公告)日：1992-09-15

申请号：US543881

申请日：1990-06-25

申请人： Mutsuo Kuragasaki ,  Yasuhiro Sueoka ,  Akira Equchi ,  Tetsuo Makino

发明人： Mutsuo Kuragasaki ,  Yasuhiro Sueoka ,  Akira Equchi ,  Tetsuo Makino

IPC分类号： D21F1/02

CPC分类号： D21F1/024 ,  D21F1/02 ,  D21F1/026

摘要： A headbox apparatus is disclosed for ejecting stock onto a forming wire of a papermaking machine. The apparatus includes a header for the flow therethrough of the stock. The header finds an inlet and an outlet, the outlet having an upstream and a downstream end. The header is tapered in a cross-machine direction from the upstream end towards the downstream end such that the flow of stock through the outlet remains substantially constant from the upstream to the downstream end. A distributor is disposed immediately downstream relative to the outlet and in fluid communication therewith. The distributor includes a plurality of distributor tubes which are disposed parallel relative to each other. Each of the tubes has an upstream extremity such that the stock flows from the outlet through each of the upstream extremities. Each of the extremities defines an upstream edge and a downstream edge such that for each tube, the upstream edge is nearer than the downstream edge to the upstream end of the outlet. The upstream edges only of the tubes are rounded such that the generation of eddies within the tubes is inhibited.

摘要翻译： 公开了一种用于将原料喷射到造纸机的成形网上的流浆箱装置。 该装置包括用于流过其中的原料的集管。 头部找到入口和出口，出口具有上游和下游端。 集管在从上游端到下游端的跨机器方向上逐渐变细，使得通过出口的原料流从上游到下游端保持基本恒定。 分配器相对于出口紧邻下游设置并与其流体连通。 分配器包括彼此平行设置的多个分配器管。 每个管具有上游末端，使得原料从出口流过每个上游末端。 每个末端限定上游边缘和下游边缘，使得对于每个管，上游边缘比出口的上游端的下游边缘更近。 管的上游边缘是圆形的，使得管内的涡流的产生被抑制。