Headbox for papermaking machine
    1.
    发明授权
    Headbox for papermaking machine 失效
    造纸机流浆箱

    公开(公告)号:US4387003A

    公开(公告)日:1983-06-07

    申请号:US284525

    申请日:1981-07-17

    IPC分类号: D21F1/00 D21F1/02 D21F1/06

    CPC分类号: D21F1/02 D21F1/026

    摘要: A manifold-like chamber is shown having a plurality of distribution conduits in communication therewith for evenly and uniformly distributing fluid pulp stock for subsequent paper forming operations; alternate ones of such conduits communicate with the chamber as at a relatively low elevation thereof while intermediate alternate ones of such conduits communicate with the chamber at a relatively higher elevation; the distribution conduits are formed as with two straight sections joined by an intermediate single curved or bent portion to further enhance turbulence therein; the distribution conduits are further situated as have the discharge therefrom generally parallel, at least as viewed from above; edge-forming means is provided within the chamber as to thereby obtain desired flow patterns within the fluid pulp in the chamber.

    摘要翻译: 示出了具有与其连通的多个分配管道的歧管状室,用于均匀和均匀地分配用于随后的造纸操作的流体纸浆; 这样的管道中的替代物在其相对较低的高度处与腔室连通,而这些管道中的中间交替管道以较高的高度与腔室连通; 分配管道形成为具有通过中间单个弯曲或弯曲部分连接的两个直线部分,以进一步增强其中的湍流; 至少从上方观察,分配管道进一步位于其排出口大致平行的位置; 边缘形成装置设置在腔室内,从而获得腔室内流体纸浆内所需的流动图案。

    Device for continuously dewatering a fiber web
    2.
    发明授权
    Device for continuously dewatering a fiber web 失效
    用于连续脱水纤维网的装置

    公开(公告)号:US4908102A

    公开(公告)日:1990-03-13

    申请号:US641409

    申请日:1984-08-16

    CPC分类号: D21F9/003 D21F3/00 Y10S162/07

    摘要: This device, preferably formed as a dual paper machine, has according to a preferred embodiment two endless screens, mainly a lower screen (21) and an upper screen (22). The lower screen (21), on which is formed a paper web, and the upper screen (22) are moved together in the lower part of a dehydration cylinder (25) arranged in the upper screen. Both screens (21,22) are unrolled from the rising lower quadrant of said cylinder (25) and are laid on the upper part of the support cylinder (26) arranged in the lower screen (21). The bandage of the dehydration cylinder (25) has hollows which absorb water from the screens along their arcs of contact with the cylinder and which project the water towards the inside of the loop formed by the screens of the cylinder. In the feed direction of the screens and downstream of the support cylinder (26), there is arranged a receiving container (36) for the projected water. The container has a curved covering wall (40) which extends opposite the feed direction of the screens up to the interstice formed between the dehydration cylinder (25) and the screens (21,22). The reception container (36) is divided into two chambers (44,45) which extend transversally to the screens and which have separate side discharge conduits. The water supplied into the main chamber (45) through the covering wall (40) is deviated by means of blades (52) towards the direction of the discharge conduit.

    摘要翻译: 优选地,该装置形成为双重造纸机,根据优选实施例,具有两个无限屏幕,主要是下屏幕(21)和上屏幕(22)。 其上形成有纸幅的下部筛网(21)和上部筛网(22)在布置在上部筛网中的脱水筒(25)的下部一起移动。 两个筛网(21,22)从所述圆筒(25)的上升的下象限展开,并被放置在布置在下筛网(21)中的支撑筒(26)的上部。 脱水筒(25)的绷带具有中空部,其沿着与圆筒接触的圆弧吸收来自筛网的水,并且将水朝向由圆筒的筛网形成的环的内部突出。 在屏幕的进给方向和支撑筒(26)的下游,布置有用于投影水的接收容器(36)。 容器具有弯曲的覆盖壁(40),其与丝网的进给方向相反延伸直到形成在脱水筒(25)和筛网(21,22)之间的间隙。 接收容器(36)被分成横向延伸到筛网并具有分开的侧排出管道的两个室(44,45)。 通过覆盖壁(40)供应到主室(45)的水通过叶片(52)朝着排出管道的方向偏离。