| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of requiring long hours for maintenance work, since foreign matter is scattered and mixed again in an unhulled rice grain side or selection clogging is easily caused in an upper net and lower net part of a selector, when the foreign matter and the unhulled rice grain roughly selected by a rough selector are taken out to an approached takeout port position.SOLUTION: A forward-downward inclined upper net 3 for selecting straw chips and gravels while rocking and transferring unhulled rice to the front side by receiving supply of the unhulled rice, a backward-downward inclined lower net 4 for receiving and selecting the unhulled rice leaking down from this upper net 3, and a forward-downward inclined bottom plate 5 for rocking and transferring fine foreign matter to the front side by receiving the fine foreign matter leaking down from this lower net 4, are installed in a vertically folding-back state in a rocking shelf frame 2. A third port 6 for discharging the straw chips flowing down from a front end part of the upper net 3 and a fourth port 7 for discharging the foreign matter flowing down from an upper end part of the bottom plate 5, are provided in a front end part of the rocking shelf frame 2, and a first port 8 for discharging the unhulled rice flowing down from the lower net 4 is provided in a rear end part of the rocking shelf frame 2. |
