Patent ID: 7789334
Filing Date: 2010-09-07
Classification: B02C

Abstract:
1. A shredding machine for finely shredding a shredable object, comprising: a plurality of rotational shafts extending in parallel in a longitudinal direction so as to support cutting blades in the transverse direction inside a shredder main body, wherein the cutting blade is provided with a plurality of cutting portions protruding from the peripheral of the cutting blade, and the cutting blades are disposed in the longitudinal direction of the rotational shafts so that the cutting portions engage with each other; a throw-in port for the shredable object provided in an upper portion of the shredder main body; and a discharge port for the shredable object provided in a lower portion of the shredder main body; wherein in order to finely crush the shredable object thrown into the throw-in port, inside the shredder main body, the discharge port is disposed so as to be offset in the longitudinal direction of the rotational shafts with respect to the throw-in port so that the shredable object is scraped up from the lower portion to the upper portion while traveling downstream from a throw-in port side to a discharge port side, to crush the shredable object several times before discharge of portions of the crushed object through the discharge port, wherein a spiral traversing member is provided on an inner wall of the shredder main body with the spiral traversing member configured to assist in causing the object to travel upwardly and downstream in the longitudinal direction as the object is being crushed.