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    • 70. 发明申请
    • A CYLINDRICAL SCREEN AND A METHOD OF PRODUCING THE SAME
    • 一种圆柱形筛网及其生产方法
    • WO1998029599A1
    • 1998-07-09
    • PCT/SE1997002202
    • 1997-12-22
    • ALFA LAVAL ABANDERSSON, Roine
    • ALFA LAVAL AB
    • D21D05/02
    • D21D5/16B01D29/25B01D29/445B01D29/86B01D2201/184
    • A cylindrical screen (16) comprises an inlet end (11) for receiving a paper pulp suspension to be separated from undesired particles, and a reject end (13) for removing separated particles. The screen (16) is intended for the kind of pressure screening apparatus having rotor wings (9) adapted to move along a cylindrical path close to the inlet side of the screen. Elongated flow deflecting members (22) are arranged on the inlet side of the screen and are distributed around the circumference of the screen, each elongated flow deflecting member extending obliquely relative to the centre axis of the screen and forwards relative to the direction of rotation of the rotor wings as seen from the inlet end (11) of the screen. According to the invention the distance between adjacent flow deflecting members (22) as seen in the circumferential direction of the screen is less than 6 mm, whereby a high efficiency is obtained with respect to separation of undesired particles without deteriorating the capacity.
    • 圆柱形筛(16)包括用于接收纸浆悬浮液以从不期望的颗粒分离的入口端(11)和用于除去分离的颗粒的废料端(13)。 屏幕(16)适用于具有转子翼(9)的压力筛选装置,适于沿着靠近屏幕入口侧的圆柱形路径移动。 细长的流动偏转构件(22)布置在屏幕的入口侧并且围绕屏幕的圆周分布,每个细长的流动偏转构件相对于屏幕的中心轴线倾斜延伸,并且相对于屏幕的旋转方向 转子翼从屏幕的入口端(11)看。 根据本发明,在屏幕的圆周方向上看到的相邻的流动偏转构件(22)之间的距离小于6mm,从而在不损害容量的情况下获得了高效率的分离不需要的颗粒。