| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that in a vertical crusher where crushed raw material is blown up by gas and taken out to the outside of the crusher, the raw material stays on a rotating table and forms a mass like a bird nest to obstruct a flow of the gas and the raw material in the crusher, and to prevent a problem of abnormal vibration and the like generated by an increase in the mass of a raw material layer on the rotating table.SOLUTION: The flow rate of the gas blown up in a casing of the vertical crusher is adjusted to 3 (m/s) or more, thereby preventing the problem of the conventional technology that the raw material stays in a gas passage to form a mass like a bird nest. A funnel-shaped cone is arranged around the lower part of a central chute, and a rotary cylinder having a screw blade around the central chute to form a screw conveyor, whereby the raw material falling into the cone can be supplied onto the rotating table after removing the gas to prevent the problem of the abnormal vibration and the like generated by an increase in the mass of the raw material layer on the rotating table. |
