公开(公告)号：US4863107A

公开(公告)日：1989-09-05

申请号：US38275

申请日：1987-04-15

申请人： Erich Harzl ,  Karl Maier ,  Sirous Namdar

发明人： Erich Harzl ,  Karl Maier ,  Sirous Namdar

IPC分类号： D21B1/34

CPC分类号： D21B1/345

摘要： For removing foreign solids, for instance contaminants, from pulpers in which waste paper, in particular with a share of more than five percent, for instance more than ten percent, of solids foreign to paper, is pulped or suspended and the suspension or slurry is the withdrawn through a screen zone for further processing, it is proposed according to the invention to at least partially withdraw the suspension or slurry from the pulper in periodic time intervals and, subsequent to the, in particular each, partial withdrawal of the suspension or slurry, to loosen, hydrodynamically or by means of fluids, the foreign solids accumulated on one side, in particular the upper side, of the screen zone, whereupon the dirt slurry obtained by hydrodynamical loosening is fully mechanically discharged from the pulper prior to newly charging the pulper. The hydrodynamical loosening of the foreign solids is preferably effected under backflushing through the screen zone. Liquid for hydrodynamical loosening is withdrawn from the hydrodynamically loosened slurry in at least one step, in particular through a filter, preferably through a rotary screen. The withdrawn liquid for hydrodynamical loosening is conveniently recycled. A device for carrying out the process according to the invention is conventiently provided with a hydrodynamical loosening means for hydrodynamically loosening foreign matter accumulated on one side of the screen zone and with a fully mechanical discharge means for the dirt slurry so obtained.

摘要翻译： 为了除去外来固体，例如来自碎纸机的杂质，其中废纸，特别是占纸张外来的固体含量超过百分之五，例如百分之十以上的纸浆也被制浆或悬浮，悬浮液或浆液是 通过用于进一步处理的筛分区域抽出，根据本发明提出，以周期性的时间间隔至少部分地从碎浆机中取出悬浮液或浆料，并且特别地，特别地每个部分地将悬浮液或浆料部分地取出 ，通过流体动力学或通过流体的方式使屏幕区域的一侧，特别是上侧积聚的外来固体松动，由此通过流体动力学松动获得的污垢浆料在新充电之前被完全机械地从碎浆机排出 碎浆机 外来固体的流体动力学松动优选在通过筛分区域反冲洗下进行。 用于流体动力学松动的液体在至少一个步骤中从流体动力学松动的浆液中排出，特别是通过过滤器，优选通过旋转筛网。 用于流体动力学松动的抽出液体方便回收。 用于实施根据本发明的方法的装置通常设置有用于流体动力学松动在屏幕区域一侧积聚的异物的流体动力学松动装置，以及用于如此获得的污垢浆料的完全机械排放装置。