Patent ID: 8746457

Claim:
A device for axial separation by the inner surface of a permanent magnetic arched groove, comprising: a bracket and a separation drum assembly; wherein the permanent magnetic arched groove of a permanent magnetic arched groove assembly is mounted outside a separation drum of the separation drum assembly, and the permanent magnetic arched groove is concentric with the separation drum; wherein the separation drum assembly comprises: the separation drum, a separation drum support, a separation drum rotation regulating mechanism, a cleaning roller, a high magnetic material groove, and a field strength gradient regulating mechanism; wherein the two ends of the separation drum are connected with roller wheels of the separation drum support that is mounted on the bracket; wherein the cleaning roller, the high magnetic material groove and the field strength gradient regulating mechanism are mounted inside the separation drum; wherein a mutual support member of the cleaning roller, the high magnetic material groove and the field strength gradient regulating mechanism mounted inside the separation drum are connected with the bracket, a support member of the field strength gradient regulating mechanism is regulable, a selected material inlet silo is connected with the bracket, the separation drum rotation regulating mechanism is mounted on the bracket; and a toothed wheel in the separation drum rotation regulating mechanism is engaged with a toothed ring on the separation drum, or a friction wheel in the separation drum rotation regulating mechanism is in friction combination with the outer surface of the separation drum; wherein the field strength and the gradient applied to the surface of the materials to be selected can be changed by adjusting the distance between the field strength gradient regulating mechanism and the inner surface of the separation drum.