公开(公告)号：US3905766A

公开(公告)日：1975-09-16

申请号：US47607674

申请日：1974-06-03

Applicant: SUNDS AB

Inventor： PETTERSON BENGT EDVARD

IPC: D21C9/02 ,  D21D5/02

CPC classification number: D21C9/02

Abstract: In withdrawing liquid from cellulosic pulp by a procedure comprising passing a column of a slurry of the pulp to be dewatered through a cylindrical vessel, in one direction, and flowing the liquid towards a chamber for withdrawn liquid, said chamber having a pervious wall immediately adjacent said column, it is desirable - in the interest of preventing clogging of the pervious wall - intermittently to interrupt inflow of liquid into said chamber by pressure variations induced by a gaseous fluid into the top of said chamber.

Abstract translation: 在通过包括使待脱水纸浆的浆液通过圆柱形容器沿一个方向通过一个方向并使液体朝向用于取出的液体的室流动的方法从纤维素浆中取出液体时，所述室具有直接相邻的可渗透壁 所述柱，为了防止渗透壁的堵塞，期望间歇性地通过由气态流体引入到所述室的顶部的压力变化来中断液体进入所述室。