Screen

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B - Operations, Transporting

07

B

B07B 1/46 (2006.01) B01D 29/35 (2006.01) B07B 1/18 (2006.01) D21D 5/16 (2006.01)

Patent

CA 2145280

A sieve, in particular a sheet metal sieve for sorting suspension of fibrous substances, has a plurality of hole-like sieving openings with an inflow and an outflow area. In the inflow area, the sieving openings are shaped as funnels that taper in the direction of flow The invention is characterised in that at least one partial area of the inflow area has a convex rounded shape.

Un crible, notamment une tôle de criblage pour trier des suspensions de matières fibreuses, comprend une pluralité de passages similaires à des trous avec une zone d'afflux et une zone d'écoulement. Dans la zone d'afflux, les passages de criblage ont la forme d'entonnoirs qui se rétrécissent dans le sens de passage. L'invention se caractérise en ce qu'au moins une région partielle de la zone d'afflux a une forme convexe arrondie.

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