The invention relates to a
casting sand recycling
treatment system. The
casting sand recycling
treatment system comprises a first conveying belt, a first
elevator, a second conveying belt, a second
elevator, a vibration screening
machine and a screening device, wherein the screening device comprises a
machine body, a
magnet and rotating cylinders, the rotating cylinders are obliquely arranged, the number of the rotating cylinders is two, the side walls of the two rotating cylinders are attached to the tops of the rotating cylinders to form a screening groove, the rotating cylinders are coaxially provided with installing cavities, the shape of the
magnet matches with the shape of the wall of the screening groove, the
magnet is attached to the inner wall, close to the screening groove, of the installing cavity, the two rotating cylinders are driven by a driving mechanism arranged on the
machine body to rotate, and the rotating directions of the two rotating cylinders are opposite. The screening device is arranged, so that
casting sand and steel fragments are separated from each other, the quality of the recycled casting sand is better, a spiral pushing rod is arranged, the casting sand is stirred in the screening groove, the steel fragments in screened materials can make full contact with the outer wall of the rotary cylinders conveniently, the screening rate of the steel fragments is increased, and by arranging a shifting piece and an elastic piece, the casting sand is not prone to being brought out by the steel fragments.