| 摘要 |
PROBLEM TO BE SOLVED: To provide chopper impellers of a granulating apparatus with a long life and economical cost. SOLUTION: A metal plate 4 in which a pair of blade plates 3, 3 are extended in the inverse directions is formed in an axis installation part 2 to be attached to a rotation axis 1. Each blade plate 3 is made line symmetric on the line passing the rotation center and both side rims of each blade plate 3 are formed to be cutting blades 5, 5. Pulverization and granulation can be carried out by the respective blades 5, 5 in both sides of each blade plate 3.
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