Patent ID: 6854676

Claim:
A shearing wheel for a waste grinder, comprising: a cylindrical ring-support ( 6 ), which has two lateral cheeks ( 27 , 28 ) and a peripheral surface ( 29 ) which define a plurality of sections ( 30 , 31 ), said ring-support being designed to be rotated around an axis by a shaft ( 3 ); a plurality of shearing blades ( 8 , 9 ), each of which has an outer lateral shearing surface ( 18 , 21 ), each blade being disposed corresponding to a section ( 30 ) of the peripheral surface ( 29 ) of the ring-support ( 6 ) to project radially relative to said peripheral surface, wherein said shearing wheel comprises: a plurality of blade-holder parts ( 7 ), each comprising a surface ( 23 ), known as the inner surface, with a shape which is designed to be applied to a section ( 30 ) of the peripheral surface ( 29 ) of the ring-support, a surface ( 26 ), known as the outer surface, which is opposite the inner surface, and at least one lateral surface ( 24 ) for securing a shearing blade ( 8 ); first means for detachable securing ( 11 - 14 ), which are designed to permit securing of a shearing blade ( 8 , 9 ) onto a blade-holder part ( 7 ), and are accessible from the outer lateral shearing surface ( 18 ) of the blade, said blade being designed to be secured onto the blade-holder part opposite a lateral securing surface ( 24 , 25 ) of said part, in order to form a rigid blade-holder/blade assembly ( 34 ) together with the blade-holder part; and second means for detachable securing ( 15 - 17 ), which are designed to permit securing of a blade-holder part ( 7 ) onto the ring-support ( 6 ), and are accessible from the outer surface ( 26 ) of said blade-holder part, in order to allow the blade-holder/blade assembly ( 34 ) to be secured onto the ring-support, or removed from the ring-support, wherein, each section ( 30 ) of the ring-support supports a blade-holder part ( 7 ), and each blade-holder part ( 7 ) supports at least one blade ( 8 ), the blades being arranged around the ring-support ( 6 ) so that two adjacent blades are contiguous, the outer lateral shearing surfaces ( 18 ) of the blades forming a continuous lateral shearing surface, and each blade-holder part ( 7 ) has two lateral surfaces ( 24 , 25 ) for securing a blade, onto each of which a blade ( 8 , 9 ) is secured to form two opposite continuous lateral shearing surfaces on the periphery of the wheel.