Novel stone-removing winnowing device

The utility model belongs to the technical field of winnowing devices, and particularly relates to a novel stone-removing winnowing device which comprises a supporting plate, supporting legs are fixed to the four corners of the bottom of the supporting plate, a winnowing box is fixed to the top of the supporting plate, and a fan is fixed inside a through opening in one side of the winnowing box. By arranging the supporting plate, the supporting legs, the winnowing box, the fan, the chip collecting box, the filtering frame, the reciprocating mechanism and the adjusting mechanism, when impurities in grain particles are removed and grains pass through the winnowing box, under the action of the fan, the light impurities mixed in the grain particles can be blown into the collecting box, and therefore the impurities in the grain particles are removed. And finally, the grain particles are collected through a chip collecting box, then the grain particles subjected to winnowing can fall into a filtering frame, under t