| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such problems that a space for bagging work is difficult to ensure when the number of positions for extracting e.g. large, middle and small rice, waste rice and rice bran increases, especially because middle and small rice often contain waste rice and rice bran and their individual sorting requires troublesome two positions for extracting waste rice and bran grains. Ž<P>SOLUTION: In a grain sorting machine, a middle rice screening cylinder 2 and a small rice screening cylinder 3 of different mesh sizes are connectedly arranged upside and downside the outer periphery of a rice ascending spiral 1, and a middle rice discharge chamber 4 and a small rice discharge chamber 5 are formed in the outer peripheral portions of individual screening cylinders 2 and 3. A separation rack 6 is disposed to receive the middle rice discharged from the middle rice discharge chamber 4 and makes the middle rice to flow down while making small rice and rice bran escape downward, and a small rice shooter 7 disposed below the separation rack 6 makes the small rice and rice bran having escaped from the separation rack 6 flow into the downside small discharge chamber 5. As a result, a small rice extracting device is constituted. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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