| 摘要 |
PROBLEM TO BE SOLVED: To provide a biaxial crusher which reliably discharges, from the vicinity of a rotary shaft, dust entering a gap between a dustproof disk and a shaft support side wall. SOLUTION: The biaxial crusher 1 is supported in a rotatable manner by the shaft support side wall 6 of a case body 3 through a bearing 8, and provided with; a rotary shaft 5 having a plurality of crushing blades; and an inner wall part 12 which is vertically separated from the shaft support side wall 6 of the case body 3 with a gap 11 and covers the inner surface side of the shaft support side wall 6. A circular hole 14a is formed around the axial center of the rotary shaft 5 in the inner wall part 12, and a dustproof disk 13 rotating while blocking the circular hole 14a is fixed to the rotary shaft 5. A very small amount of dust entering the gap 11 is dropped under a crushing chamber 3c by its own weight so that the bearing 8 of the rotary shaft 5 is protected adequately. COPYRIGHT: (C)2003,JPO
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