| 摘要 |
PCT No. PCT/SE88/00056 Sec. 371 Date Oct. 18, 1989 Sec. 102(e) Date Oct. 18, 1989 PCT Filed Feb. 12, 1988 PCT Pub. No. WO88/06090 PCT Pub. Date Aug. 25, 1988.An apparatus for dewatering and squeezing a water containing material comprises a drum with a sieve mantle defining two co-operating drum sections, each comprising a feed screw extending therein. The first section of the drum in the feed direction is formed for dewatering of the material mainly by self-drainage. The first drum section is rotatable and is provided with means for cleaning the sieve mantle holes. The second section is formed for increased compression of the material, and has a thread height for the feed screw smaller at the outlet of the second section than at the inlet to this section.
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