| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulverizing device of a tri-axial system which increases the areas where a fine crushing blade rotating structure receives crushed pieces and facilitates the adjustment work of the spacings between the blade parts of a stationary blade and a fine grinding blade. SOLUTION: A primary crushing means has a pair of primary crushing blade rotating structures (1) mounted with many primary crushing blades (2) apart the spacings approximately equal to the thickness of the primary crushing blades. The primary crushing blade rotating structures are supported rotatably inward to each other in the positions where the primary crushing blades of the one primary crushing blade rotating structure intrude into the spacings between the primary crushing blades of the other primary crushing blade rotating structure. These structures shear and primarily crush the works meshed with the primary crushing blades by the blade parts of both primary crushing blades facing each other and downwardly drop the crushed pieces subjected to primary crushing. The fine crushing means existing below the primary crushing means has the fine crushing blade rotating structure (9) having many fine crushing blades (92) for finely crushing the crushed pieces cooperatively with the stationary blade (10). The fine crushing blade rotating structure is disposed in a position where its central perpendicular L1 is deviated laterally from a central perpendicular L2 of the shearing section by the primary crushing blades of the primary crushing blade rotating structures. The stationary blade is disposed in the deviated direction and the fine crushing blade rotating structure is constituted to be rotated in the direction facing the stationary blade.
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