Raw material pretreatment device

The utility model discloses a raw material pretreatment device, which relates to the technical field of raw material screening, and comprises two sliding rods, supporting legs are fixedly connected between two ends of the two sliding rods, the supporting legs are obliquely arranged, a rotating cylinder is arranged between the two sliding rods, two ends of the rotating cylinder are provided with annular bearings, and the annular bearings are fixedly connected with the two sliding rods. Sliding sleeves are fixedly connected to the two sides of the outer ring of the annular bearing, the sliding sleeves are slidably connected with the sliding rods on the two sides correspondingly, three arc-shaped filtering plates with different filtering hole diameters are arranged on the rotating cylinder, and the three arc-shaped filtering plates are arranged at equal intervals; according to the utility model, the three arc-shaped filter plates with different pore diameters are arranged and can be switched through the locking