| 摘要 |
PROBLEM TO BE SOLVED: To provide a crusher with a simple structure dispensing with a return casing for coarse crushing blades and various parts attached thereto. SOLUTION: In the crusher A crushing by cooperation of coarse crushing blades 10 and rotary blades 20 provided in a housing H with fixed blades 30 provided to one inner side face of the housing, and discharging from a discharge port 40 formed at the lower part, the housing is provided with front and rear walls 2 disposed with a given interval, and right and left opening doors 4, 5 between the front and rear walls, rising and falling toward the outside respectively with lower ends as fulcrums. A rotary shaft 50 is provided with the rotary blades and coarse crushing blades sandwiched by the rotary blades and set with intervals. Return casing parts 60 covering the coarse crushing blades are integrally formed on the inner faces of the right and left opening doors facing the coarse crushing blades. Part of the crushing object coarsely crushed by the coarse crushing blades is restrictively induced from one upper end of the return casing parts 60 of the doors to the other upper end. COPYRIGHT: (C)2009,JPO&INPIT
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