| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently finely crush a raw material before charging it to a shredder and to improve the processing capacity of the shredder. SOLUTION: In this crusher wherein in a casing provided with a feeding port 2 in the upper part, a discharge port 3 in the lower part and a chute 4 having such an inclined angle that a material to be crushed charged from the feeding port 2 is slipped down by gravity in the rear part, an upper rotor 5 provided with plural lines of crushing blades 11 in the lateral direction and where the chute 4 side rotates downward and a lower rotor 6 provided with plural lines of crushing blades 12 so that they are inserted between the lines of the crushing blades 11 of the upper rotor 5 and rotating at a higher speed than the upper rotor 5 in the reverse direction are pivotally supported, a step part 25 is formed in the mid-way of the chute 4 and below it, the plural lines of fixed blades 18 are installed so that they are inserted between the lines of the crushing blades 11 of the upper rotor 5, in the front of the casing 1, front fixed blades 27 inserted between each of the lines of the crushing blades 12 of the lower rotor 6 are installed. |
