LINEAR MOTOR-TYPE SORTING DEVICE OF NONMAGNETIC METAL

PURPOSE:To improve the performance in separating and sorting nonmagnetic metals in wastes by providing two linear motors or two sets of linear motors in parallel at each stage, and providing a large lumpy material separator consisting of a grooved trough above a trough. CONSTITUTION:Linear motors 4d, 4e, and 4f are provided in parallel respectively in the neighborhood of linear motors 4a, 4b, and 4c, and the linear motors of each set are arranged so that the directions of the moving magnetic field may be symmetrical in the outward direction with respect to the center axis. Grooved troughs 8a, 8b, 8c, and 8d obtained by combining plural semicircular troughs are provided at the upper part of each stage, and an appropriate clearance is kept between the grooved troughs. A large lumpy material 9 is not dropped onto a trough 5 as shown by the arrow P, and directly recovered on the nonmetal side. Small-sized materials such as an aluminum can 10 are dropped from the clearance between the grooved troughs onto the trough 5, and separated by the deflecting force of the linear motor into nonmagnetic metals and nonmetals.