Careful selection machine contained stone separating function

摘要

The present invention relates to a rice sorting machine provided with a stone separation function, which includes an upper body and a lower body. The upper body is provided with an injection unit in an upper portion on a rear surface side for the supply of a predetermined amount from a supply hopper filled with threshed rice, a screening unit on a lower side of the injection unit provided for a downward discharge of the rice in a state where foreign matter larger or smaller in volume than the rice is sequentially screened, and a foreign matter collecting unit provided such that the foreign matter filtered from the rice is discharged and collected. The lower body is provided with a stone separation unit disposed on a lower side of the upper body and provided for the separation and screening of foreign matter with different specific gravities from the rice supplied through the screening unit and a collecting unit discharging the rice after the foreign matter is screened by the stone separation unit. The screening unit has a plurality of perforated plates placed in a vertical direction, placed to be inclined downwards toward a front surface side, and having multiple vertically perforated holes having different sizes depending on the height of installation, a supporting plate provided such that the foreign matter filtered by the perforated plate is accommodated and discharged toward the front surface, and a rice transporting region disposed to communicate with the downward inclination part of the supporting plate and the perforated plate such that the rice selected from the foreign matter is transported and supplied to the lower body. The chaff, broken rice, fine foreign matter, and the like flowing in with the rice are separated and removed in advance before the initiation of a polishing process. Then, stones, dust, and the like are removed from the foreign matter-removed rice. Accordingly, sorted rice can be effectively separated, selected, and collected.