The utility model discloses a concrete divides sand machine, including box, nucket -wheel and drive arrangement, the box is provided with feed inlet and discharge gate for the upper surface of hollowstructure and box one side, and side that the opposite side upper surface was provided with sealed lid and kept away from the discharge gate is equipped with the mouth that shakes out, and the nucket-wheel setting is and fix through the bearing and cover sealed between box and sealed lid, and drive arrangement sets up at the box side and is connected with the bearing, and the interval has set upa plurality of scraper bowl blades on the nucket -wheel, and the edge of scraper bowl blade is throwing arc line knot structure. The utility model discloses can reduce the friction rate, also reduce power consumption simultaneously, reach energy -conserving effect.