| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulverizer enabling large heavy foreign materials such as metals, stones and concrete pieces to be separated and eliminated in the pulverizer so configured that normal rotation and reverse rotation are possible, thereby enabling a load on the machine to be lightened, prevent fire, and reduce noise at the same time. SOLUTION: The pulverizer including a casing, a blowing hummer body, a changing dumper for changing an introducing-supplying position of a pulverizing object, a screen disposed between the casing and the blowing hummer for screening and passing the pulverizing object pulverized by blow with the blowing hummer body, a pulverizing object feeding opening disposed continuously on the casing for feeding the pulverizing object thereinto further includes a means for separating and eliminating heavy foreign materials having a largeness of not passing through the screen out of casing among the pulverizing object discharged using an upper direction discharging reaction by rotation of the blowing hummer body, and returning the rest into the casing. COPYRIGHT: (C)2009,JPO&INPIT
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