Screening device for phosphate ore raw materials

The utility model discloses a screening device for phosphate ore raw materials, which comprises a screening outer barrel, a screening mesh barrel is coaxially arranged in the screening outer barrel, the screening outer barrel and the screening mesh barrel can synchronously and horizontally rotate around the axis, two kinds of screening holes with different sizes are uniformly distributed on the wall surface of the screening mesh barrel, and the screening mesh barrel is arranged in the screening outer barrel. The two kinds of sieve pores with different sizes are alternately distributed; a stirring feeding rod is coaxially arranged in the screening net barrel, and a spiral stirring feeding piece is wound on the outer wall of the stirring feeding rod in the length direction. According to the powder screening device, the shuttle trough is improved to be of the drum screen structure, raw materials continuously move in the drum screen structure through continuous rotation of the drum screen structure, so that phosp