Feed screw for sedimentation or treatment systems

Details Feed screw for sedimentation or treatment systems Feed screw for sedimentation or treatment systems

B - Operations, Transporting

65

G

B65G 33/26 (2006.01) B01D 21/24 (2006.01)

Patent

CA 2140733

The invention concerns a feed screw in the form of a self-supporting, axleless helix whose surface extends essentially radially, the feed screw being used in sedimentation or treatment systems for clearing suspensions in paper making processes. The invention is characterized by a second helix whose surface, or generatrix, deviates preferably between 0° and 20° from the direction of the central axis and extends in the feed direction. The second helix may deviate between 0° and maximally 40° and have a length - per lead - between 20% and 40% of the lead of the helices.

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