Method and apparatus for the sorting of fiber suspensions
AssigneeSulzer-Escher Wyss GmbH
InventorWolfgang Mannes
Life of this patent
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Abstract
In a sorting method for fiber suspensions, a dividing wall (3, 3') is used comprising openings via which the compenent particles in the suspension S to be sorted are classified according to their size. The beneficial transporting away of the rejected component particles is thus achieved on the inlet side (4) of the dividing wall (3,3') with the aid of flow blades (7,7'), whereas, on the outlet side (5), pressure pulses produced by clearers (6) act through the openings of the dividing wall preventing them from clogging up.
Claims14
Method for the sorting of fiber suspensions, in particular for the removal of impurities from an aqueous suspension containing used paper, in a sieve apparatus by the holding back of solid material by virtue of their size on the inlet side of a dividing element which is provided with openings and allows water and fiber material to pass through to the outlet side, wherein a clogging of the sieve apparatus is prevented by clearing means which are moveable near to the flow outlets of the openings and produce hydraulic pressure pulses, characterized in that
- additional clearing means disposed on the inlet side in the region of the openings is operated less intensively than the clearing means disposed on the outlet side.
Dependencies are inferred from the claim text.