Frozen block grinder

A - Human Necessities – 22 – C

Patent

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Details

A22C 17/00 (2006.01)

Patent

CA 2691955

A grinding machine has a shearing chamber that includes one or more edges that provide fulcrum points against which frozen block of material, such as frozen blocks of meat, can be held against during a reduction or shearing process. The edges may be arranged to limit the advancement of reduced blocks of material to provide more control on the size of the ground material that is ultimately output by the grinding machine. The grinding machine may also include an expansion zone into which reduced blocks can be temporarily held to accommodate volume increases during the reduction process. A feed screw advances the frozen blocks through the shearing chamber and includes pressure flighting to help shear material from the frozen blocks. The feed screw may include a knife holder that provides support for a knife held therein against the lateral forces experienced by the knife as the knife shears material adjacent the orifice plate.

L'invention concerne un broyeur présentant une chambre de cisaillement qui comprend un ou plusieurs bords fournissant des points d'appui contre lesquels des blocs congelés de matériau, comme des blocs congelés de viande, peuvent être maintenus pendant un procédé de réduction ou de cisaillement. Les bords peuvent être agencés pour limiter l'avancement de blocs réduits de matériau, pour fournir plus de contrôle sur la taille du matériau de base qui est finalement produit par le broyeur. Le broyeur peut également comprendre une zone d'expansion dans laquelle des blocs réduits peuvent être temporairement maintenus pour s'adapter à des augmentations de volume pendant le procédé de réduction. Une vis d'alimentation fait avancer les blocs congelés à travers la chambre de cisaillement et comprend des vagues de pression pour aider à cisailler le matériau à partir des blocs congelés. La vis d'alimentation peut comprendre un porte-couteau qui fournit un support pour un couteau, maintenu à l'intérieur de celui-ci, contre les forces latérales subies par le couteau pendant que le couteau coupe le matériau à proximité de la plaque d'orifice.

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