Feed accelerator system including accelerating vane apparatus

Details Feed accelerator system including accelerating vane apparatus Feed accelerator system including accelerating vane apparatus

B - Operations, Transporting

04

B

B04B 11/02 (2006.01)

Patent

CA 2124924

A feed accelerator system (10) for use in a centrifuge, the system comprising a conveyor hub (26) rotatably mounted within a rotating bowl (12) the hub including an inside surface and an outside surface. At least one feed slurry passageway is disposed between the inside surface (42) of conveyor hub and the outside surface of the conveyor hub, and at least one helical blade (24) having a plurality of turns is mounted to the outside surface of the conveyor hub. A vane apparatus is associated with the passageway and is disposed between two adjacent turns of the helical blade. The vane apparatus may include an inwardly extending baffle (58) and/or an outwardly extending accelerator vane (122). Alternatively, a U-shaped channel (84) may be associated with the passageway, the U-shaped channel including plurality partitions (142) attached to the discharge end of such channel so as to form a plurality of discharge channels and a flow directing and overspeeding vane (146) disposed within each channel, each vane having a different forward discharge angle.

Un accélérateur d'alimentation (10) destiné à être utilisé dans une centrifugeuse comprend un moyeu d'amenée (26) monté de manière à pouvoir tourner dans un bol rotatif (12). Ce moyeu comporte une surface interne et une externe. Au moins un passage d'alimentation en boue est disposé entre la surface interne (42) et la surface externe dudit moyeu, et au moins une lame hélicoïdale (24) dotée de plusieurs spires est montée à la surface externe du moyeu d'amenée. Une aube complète le passage et se trouve entre deux spires successives de la lame hélicoïdale. Cette aube peut comprendre un déflecteur tourné vers l'intérieur (58) et/ou une aube d'accélération tournée vers l'extérieur (122). En variante, un canal en U (84) peut compléter le passage; ce canal comporte plusieurs cloisons (142) fixées sur son extrémité de sortie de manière qu'on obtienne plusieurs canaux de sortie dotés chacun d'une aube de canalisation et de surcharge (146) présentant un angle de sortie frontale différent.

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