Screw-type solid bowl centrifuge

Details Screw-type solid bowl centrifuge Screw-type solid bowl centrifuge

B - Operations, Transporting

04

B

B04B 1/20 (2006.01)

Patent

CA 2389287

The invention relates to a screw-type solid bowl centrifuge (2) for processing a material to be centrifuged that has a tendency to foam. The inventive centrifuge comprises a centrifugal drum (3) with a liquids discharge (34) and a solids discharge (36) and with a rotatable bowl jacket (4) in which a rotatable screw (12) is disposed. The centrifugal drum is provided with a feed section with a central feed pipe (20) that is configured coaxially relative to the axis of rotation of the centrifuge drum. Said feed pipe feeds the material to be centrifuged through a distributor (16) to the centrifuge chamber (18) between the screw (12) and the bowl jacket (4) which is designed as a substantially airtight, closed system. The invention further provides a special kind of a baffle plate system (28, 30) that prevents foam that is produced when the material is centrifuged from escaping through the liquids discharge (34) and/or the solids discharge (36).

L'invention concerne une centrifuge à vis à bol plein (2) pour traiter une masse résiduelle centrifugée encline au moussage, qui présente un panier centrifuge (3) avec une sortie de liquide (34) et une sortie de solide (36) et un bol plein (4) rotatif dans lequel est montée une vis sans fin (12) rotative. Il est prévu une section d'amenée avec un tuyau d'amenée (20) central formé de manière concentrique à l'axe de rotation du panier centrifuge, pour acheminer la masse résiduelle centrifugée par un répartiteur (16) dans la chambre centrifuge (18) entre la vis sans fin (12) et le bol plein (4), qui se présente sous forme de système fermé, sensiblement étanche à l'air. Un type particulier de configuration de disques ralentisseurs (28,30) empêche en outre que la mousse formée à la sortie par centrifugation du produit centrifugé, ne sorte par la sortie de liquide (34) et/ou par la sortie de solide (36).

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