Screening device for concrete raw materials

The utility model discloses a concrete raw material screening device which comprises supporting legs, a processing box fixedly connected to the tops of the supporting legs, a box door hinged to the front face of the processing box, a feeding pipeline fixedly connected to the left side of the box door, screening mechanisms arranged on the right side and inside the processing box, and guide blocks fixedly connected to the two sides of the inner wall of the processing box. Cleaning mechanisms are arranged in the supporting legs, a discharging opening is formed in the bottom of the treatment box, the screening mechanism comprises a first supporting plate, the first supporting plate is fixedly connected to the right side of the treatment box, and a first motor is fixedly connected to the top of the first supporting plate. According to the concrete raw material screening device, the screening mechanism is arranged, the screening cylinder can be driven to roll only by starting the first supporting plate to work, con