| 摘要 |
PROBLEM TO BE SOLVED: To provide the subject arrangement utilizing an existing separative arrangement without getting complicated, and enabling efficient separative operations as a result of making the purpose of each separative means clear. SOLUTION: This seed grain separative arrangement comprises a winnowing means 3 for removing contaminants from raw grains, a raw grain separative means 4 for separating winnowed raw grains into a fraction having the largest quantity of seed grains and the other fractions, seed grain separative means 5 and 7 providing a seed separative line for extracting seed grains from the grains in the fraction having the largest quantity of seed grains discharged from the means 4, and a circulating line for circulating to the winnowing means 3 the grains in the remaining fractions other than that having the largest quantity of seed grains discharged from the means 4.
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