Screening device for bulk materials

B - Operations – Transporting – 07 – C

Patent

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Details

B07C 5/06 (2006.01) B07B 1/15 (2006.01)

Patent

CA 2317312

A screening device for separating fractions of bulk materials, and has at least one screening floor, with a plurality of shafts aligned parallel to each other, which rotate at the same speed, in the same direction of rotation. Screening stars are mounted on these shafts, with teeth projecting radially in relation to the shaft. The screening stars are positioned interleaved with one another. The diameter d of each screening star is approximately determined according to the formula (see formula I) whereby t is the spacing between the longitudinal axes of shafts disposed adjacent to each other. Viewed in the direction of rotation, the leading flank of each tooth of the screening stars extends along an approximately straight line near the tip of the tooth and defines a curve from the tooth trough to the flank area.

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