Size reduction apparatus

B - Operations – Transporting – 23 – D

Patent

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Details

B23D 19/06 (2006.01) B02C 18/14 (2006.01) B02C 18/18 (2006.01) B23D 33/02 (2006.01)

Patent

CA 2243116

A shredding apparatus (2) is described which comprises at least one module of a pair of counter-rotating cutting assemblies located in spaced apart parallel relationship wherein each assembly comprises a driving shaft (12, 14) upon which is mounted one or more cutters (34, 38, 42). The cutters (34, 38, 42) are provided with a pair of cutting surfaces or edges (65) which are located at either end of the cutter (34). In the one module the cutting surfaces of adjacent cutters mounted on adjacent shafts are in contact with each other over at least a part of the circumference of the cutting surfaces so that when the cutters counter-rotate, material fed between them is cut by the action of the counter-rotating cutters. An anti-wrap member is associated with a driving shaft to prevent material being cut from wrapping around the shaft or cutter.

L'invention concerne un appareil de déchiquetage (2) qui comprend au moins un module de deux ensembles de coupe en rotation antagoniste, espacés et parallèles . Chaque ensemble comprend un arbre d'entraînement (12, 14) sur lequel est monté un ou plusieurs dispositifs de coupe (34, 38, 42). Ces derniers sont pourvus de deux surfaces ou bords de coupe (65) de chaque côté du dispositif de coupe (34). Dans un module, les surfaces de coupe des dispositifs de coupe adjacents, fixés sur des arbres adjacents, entrent en contact l'une avec l'autre sur au moins une partie de la circonférence des surfaces de coupe, de sorte que lorsque les dispositifs de coupe tournent dans des sens opposés, le matériau amené entre ces deux dispositifs est coupé par l'action de ces dispositifs en rotation antagoniste. Un élément anti-enroulement est associé à l'arbre d'entraînement pour empêcher que le matériau coupé ne s'enroule autour de l'arbre ou du dispositif de coupe.

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