Tumble grinder with screen portion

Details Tumble grinder with screen portion Tumble grinder with screen portion

B - Operations, Transporting

02

C

B02C 18/06 (2006.01) B02C 17/02 (2006.01) B02C 21/02 (2006.01) B07B 1/22 (2006.01)

Patent

CA 2088638

A tumble grinder is disclosed in which material which is already sufficiently small in size, primarily being abrasive aggregate or earthen material, may be discharged from the receptacle to bypass the comminution apparatus and thus substantially reduce wear thereto. A portion of the cylindrical wall of the receptacle is provided with classifying openings, for example by providing a screened opening as a band around the receptacle. The classifying openings permit material which is already smaller than the size of the openings to fall therethrough, thereby bypassing the comminution apparatus. Preferably, a conveyor is positioned beneath the receptacle, to catch and discharge the material which falls through the screen or other classifying openings to a pile located away from the receptacle. Sidewalls positioned on either side of the receptacle stop any material which is flung out to the side, and redirect it down onto the conveyer. The apparatus may be advantageously mounted on a trailer, for towing from site to site. In such an arrangement, it is advantageous to provide an integrated, transportable system, in which the receptacle is moveable between an operating position and a transportation position.

Broyeur à culbutage conçu pour laisser passer les matériaux (principalement des granulats abrasifs ou de la terre) dont les dimensions sont déjà suffisamment réduites, ce qui permet de diminuer l'usure de l'appareil. Le récipient comporte des ouvertures classeuses disposées en bande sur une portion de sa paroi cylindrique, par lesquelles passent les matériaux dont les dimensions sont inférieures au diamètre de ces dernières, contournant ainsi le dispositif de broyage. Un convoyeur est de préférence placé sous le récipient pour recevoir les particules de matériaux ainsi rejetées, et pour les mettre en tas, à l'écart du récipient. Des parois latérales placées de chaque côté du récipient arrêtent toutes les particules qui sont projetées à l'extérieur et les guident vers le convoyeur. Il serait préférable de monter l'appareil sur une remorque pour pouvoir le déplacer d'un endroit à l'autre. Dans ce cas, il faudrait prévoir un système transportable intégré, à récipient mobile à deux positions, c'est-à-dire position de fonctionnement et position de transport.

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