Rotary screen for efficient mineral separation

According to the technical scheme, the drum screen is characterized in that the drum screen comprises a rack, an outer drum installed in the rack, outer screen holes formed outside the outer drum, an inner drum installed in the outer drum, and inner screen holes formed outside the inner drum and larger than the outer screen holes in diameter, and further comprises a first dredging component and a second dredging component, the first dredging component comprises a first dredging column mounted on the rack, one end of the first dredging column is elastically matched with the rack, and the first dredging column is used for pushing medium-sized sand and stones clamped in the outer sieve holes into the outer roller; the second dredging component comprises a movable plate installed on the machine frame, the movable plate penetrates through the outer roller, and a second dredging column is arranged below the movable plate. The drum screen for efficient mineral separation aims at solving the problem that screen holes