Comminuting device with counter-rotating rotors

B - Operations – Transporting – 02 – C

Patent

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Details

B02C 18/18 (2006.01) B26D 1/24 (2006.01) B26D 7/26 (2006.01) B29B 17/04 (2006.01)

Patent

CA 2650747

The invention relates to a device for comminuting feedstock with a cutting tool with a first rotor (15) and at least one second rotor (16), each of which rotate around their longitudinal axis with an opposite rotation direction. Each rotor (15, 16) is provided with a number of cutting discs (20), which are arranged at an axial distance to one another. In this case, the cutting discs (20) of the first rotor (15) are located on gaps and with radial overlapping relative to the cutting discs (20) of the second rotor (16). The cutting discs (20) along their circumference have support surfaces (23) for accepting cutting tools (24), whose cutting edges (26) move past one another over the course of the rotation of rotors (15, 16) with the formation of a cutting clearance (27). For the positionally precise fixation of the cutting tool (24) on the cutting discs (20), it is proposed according to the invention that to create a positive fit between the cutting tools (24) and cutting discs (20), a positive fit groove (31, 34), running in the plane of the cutting disc (20), is arranged in the common contact area, said groove in which at least one positive fit strip (28, 30, 20) engages.

La présente invention traite d'un dispositif de dilacération de produit d'alimentation avec un outil de coupe, avec un premier rotor (15) et au moins un second rotor (16), chacun des deux tournant autour de leur axe longitudinal avec un sens de rotation inverse. Chaque rotor (15, 16) est muni d'un certain nombre de disques de coupe (20) disposés à distance axiale l'un par rapport à l'autre. Dans ce cas, les disques de coupe (20) du premier rotor (15) se trouvent dans des espaces et avec chevauchement radial par rapport aux disques de coupe (20) du second rotor (16). Les disques de coupe (20) comportent des surfaces de support (23) sur leur circonférence pour recevoir des outils de coupe (24) dont les arêtes du taillant (26) se dépassent lors de la rotation des rotors (15, 16), avec formation d'un espace mort de coupe (27). Pour la fixation précise de la position de l'outil de coupe (24) sur les disques de coupe (20), la présente invention propose que, pour créer un ajustement positif entre les outils de coupe (24) et les disques de coupe (20), une rainure d'ajustement positive (31, 34) disposée dans le plan du disque de coupe (20), soit aménagée dans la zone de contact commune, ladite rainure dans laquelle s'engage au moins une bande d'ajustement positif (28, 30, 20).

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