Patent ID: 6409111
Filing Date: 2002-06-25
Classification: B02C,B27L

Abstract:
An apparatus for reducing the oversized fraction of chips, which apparatus comprises a rotatingly fitted disc-like rotor part (1) to which are attached a number of chipping blades (2), and a fixed stator part (3) surrounding the rotor part (1), to which stator part are attached a number of counter blades (4), the blades (2) and counter blades (4) being arranged in a chipping chamber (5), through which the chips to be reduced are arranged to travel outward with respect to the rotating shaft (6) of the rotor part (1), characterized in that the counter blades (4) are fitted in a position substantially deviating from the radial direction of the rotating shaft (6), when viewed on the vertical plane with respect to the rotating shaft (6) of the rotor part (1), and that the chipping chamber (5) is formed by the space between two counter blades (4), the bottom surface (10) of which space is formed by the top surface of the rotor part (1), and the roof surface (11) by the bottom surface of the stator part (3) and counter blade (4) opposite to the top surface of the rotor part (1), whereby, when viewed in the direction of rotation (12) of the rotor part (1), the said roof surface (11) is arranged to converge towards the said bottom surface (10).