| 摘要 |
PCT No. PCT/SE93/00047 Sec. 371 Date Sep. 9, 1994 Sec. 102(e) Date Sep. 9, 1994 PCT Filed Jan. 25, 1993 PCT Pub. No. WO93/19246 PCT Pub. Date Sep. 30, 1993A screening device for pulp production includes a cylindrical container for continuous flow-through of a fiber suspension and further includes an inlet to the container and an outlet for the fiber suspension, a moveable support member mounted in the container and which supports hollow screening members for vertical movement; a tubular enclosure open at opposite ends is mounted on the supporting member which enclosure has a moveable piston mounted therein, a hydraulic cylinder being connected to the piston to move the piston in a portion of the enclosure with the hydraulic drive mounted outside of said container with transmission members connected to said supporting member which will therefore absorb the reaction forces generated in moving the piston.
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