D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
100/8
D21F 1/66 (2006.01) B30B 9/14 (2006.01) B30B 9/18 (2006.01)
Patent
CA 1264122
ABSTRACT A screw press for dewatering sludge and fibre suspensions, comprising a feed screw, a perforated drum surrounding the feed screw, an inlet or infeed aperture at one end of the drum, and an annular outlet or outfeed aperture located at the other end of the drum and formed between the forward edge of the drum and the end-wall section thereof, this end-wall section comprising a plurality of flaps placed in the extension of the infeed screw, and the flaps being yieldably arranged in a manner to adjust the size of the outlet aperture. In accordance with the invention the end of each flap nearest the axis (9) of the feed screw (1) is pivotally mounted on an attachment means (11), and the attachment means (11) is arranged for movement along the axis of the feed screw (1). The flaps (7) are arranged to be pressed outwards under the influence of a first force generating means (15,17,18) to form a larger angle with the screw axis (9), therewith causing the outlet aperture to decrease in size. The attachment means (11) is, or are, arranged to be urged axially towards the outlet aperture (5) under the influence of second force generating means (20,21, 22), therewith decreasing the size of the outlet aperture, the two force generating means being adjustable independently of one another.
508720
Fetherstonhaugh & Co.
Glowacki Tad
LandOfFree
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