FIELD: process engineering.
SUBSTANCE: invention relates to press equipment designed, mainly, to remove fluid from carried material. Proposed expeller comprises screw shaft to support helical worm arranged in casing. Material transfer channel is formed between screw shaft, transfer worm and said casing. Screw shaft features surface profile at, at least, one section of transfer channel.
EFFECT: ruled out sticking of material components to screw shaft, regular filling of transfer channel.
12 cl, 6 dwg
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