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    Device for treating deformable particles with the counterflowing liquids
    71.
    发明授权
    Device for treating deformable particles with the counterflowing liquids 失效
    用逆流液体处理可变形颗粒的装置

    公开(公告)号：US4062722A

    公开(公告)日：1977-12-13

    申请号：US721106

    申请日：1976-09-07

    申请人： Carlos Ibanez Ajuria

    发明人： Carlos Ibanez Ajuria

    IPC分类号： D21C7/00 ,  D21C9/10 ,  D21C7/12 ,  D21C9/02

    CPC分类号： D21C7/00 ,  D21C9/10

    摘要： A device for the counterflow treatment of fibrous deformable particles with liquid in stages in a tower. In the tower the particles and liquid flow downward by small movements and the liquid flows upwardly. Each of these successive two movements constitute one stage. The ascent of liquid alone, or filtration in each stage, is produced by introductions of water with adequate pressure through the bottom of the tower. The descent of the mass of particles and liquid or mass movement in each stage, is produced by rapid removal of mass from the lower part of the tower. During filtration periods, the particles suffer only small relative displacements among them, because the upper layer of the particles is retained by a screen, that only permits the flow of liquors; in addition, successive grids extending from the proximity of the screen to the proximity of the bottom of the tower, offer resistance to movement of the particles. In order to produce both adequate mass-movement and filtration, it is necessary that the velocity of liquid in both directions be correctly determined. The velocity of descent must be sufficient to provoke the dragging, and shearing against the grids of the mass of particles. The velocity of ascent must be slow enough to produce only small local differences in particle concentration, with slight increases in concentration below the screen and the lower edges of the grids. The water introduced at the bottom of the tower, the removal of mass at the bottom of the tower, as well as the introduction of the particles are automatically controlled.

    摘要翻译： 一种用于在塔中阶段处理具有液体的纤维状可变形颗粒的逆流处理的装置。 在塔中，颗粒和液体通过小的运动向下流动，液体向上流动。 这些连续两个运动中的每一个都构成一个阶段。 单独的液体上升或每个阶段的过滤是通过在塔的底部引入具有足够压力的水来产生的。 颗粒和液体质量的下降或每个阶段的质量运动的产生是通过从塔的下部快速去除质量而产生的。 在过滤期间，颗粒在它们之间只有很小的相对位移，因为颗粒的上层被屏幕保留，只允许液体的流动; 此外，从屏幕附近延伸到塔的底部附近的连续格栅提供了抵抗颗粒运动的阻力。 为了产生足够的质量运动和过滤，必须正确确定液体在两个方向上的速度。 下降速度必须足以引起拖曳，并剪切抵抗颗粒物质的网格。 上升速度必须足够慢，才能在颗粒浓度方面产生较小的局部差异，同时在筛网下方和网格下边缘处的浓度略有增加。 导入塔的底部的水，塔的底部的质量的去除以及颗粒的引入被自动控制。

    Apparatus for the washing of preferably cellulosic pulp
    72.
    发明授权
    Apparatus for the washing of preferably cellulosic pulp 失效
    用于洗涤优选纤维素浆的装置

    公开(公告)号：US3729961A

    公开(公告)日：1973-05-01

    申请号：US3729961D

    申请日：1971-03-17

    申请人： SUNDS AB

    发明人： LEFFLER N

    IPC分类号： D21C9/02 ,  D21C7/00

    CPC分类号： D21C9/02

    摘要： Apparatus for washing a suspension of a fibrous material as it passes through a container in which a washing liquid is passed from a supply chamber having a perforate wall into and through the suspension and then into a collecting chamber. Means are provided for interrupting the influx of washing liquid into the collecting chamber at suitable intervals by pressure variations in the liquid.