the subject innovation relates to a blueberry sorter having superior rotational force, the inner circumferential surface of the screening drum and more particularly, soon as by placing the drive roller and the pick-out rollers on both sides over the screening drum and is adapted to be supported at the same time in close contact with the driving roller by its own weight of the screening drum rotating screening drum friction, by a driven roller disposed on an upper outer peripheral surface of the screening drum rear is prevented by screening drum is also audible in the upper direction on the screening drum is in vain blueberry sorter having a superior rotational force capable of preventing the phenomenon. Blueberry sorter with excellent rotational force is designed according to the screening drum and long in the front to the rear of blueberries and selector in the upper body is formed by the transfer, on the outer surface with a plurality of holes formed in a hollow cylindrical shape sorting And a rotation support portion for rotatably supporting the screening drum in the longitudinal direction on the side of the separator main body Rotated by an external force, and the friction drive roller for rotating the screening drum And driven rollers for supporting the rotation of the screening drum A pick-out roller arranged in contact to the inner peripheral surface naedorok push the rear of the screening drum for the screening sandwiched blueberry ball out of the screening drum Include, but the drive roller will, as soon as the pick-out roller is supported over the screening drum by the combination of the screening drum and in close contact so that the screening drum at the position of the front top of the screening drum by the weight of the screening drum at the same time of being placed in contact on the inner peripheral surface, the driven roller, and at the position of the rear upper portion of the screening drum to prevent flow in the upper direction of the screening d
