Anti-blocking silicon material screening machine

The invention relates to the technical field of silicon material screening equipment, in particular to an anti-blocking silicon material screening machine which comprises a screening machine body and a vibrating screen plate, rotating supporting legs are symmetrically and rotationally connected to the outer portion of the screening machine body, and threaded supporting legs are in threaded connection with the sides, away from the screening machine body, of the rotating supporting legs; during use, in the vibration screening process of the vibration screen plate, when a sliding shaft ascends, a poke rod can slide from the left side to the right side of a fourth sliding groove under rotation extrusion of the vibration screen plate, and when the sliding shaft descends, the poke rod can slide from the left side to the right side of the fourth sliding groove to the right side of the fourth sliding groove; when the vibrating screen plate rotates, a poke rod slides from the right side of a fourth sliding groove to t