Screening device for open pit coal mine production

The utility model belongs to the technical field of coal mine production, and discloses a screening device for open pit coal mine production, which comprises a bottom plate, a supporting rod is fixedly mounted on the right side of the top of the bottom plate, a fixing ring is hinged to the top of the supporting rod, the inner ring of the fixing ring is connected with a screening barrel through a bearing, and the left side of the outer wall of the screening barrel is also connected with a fixing ring through a bearing; a supporting plate is fixedly mounted at the bottom of the left fixing ring, a hydraulic rod is fixedly mounted on the left side of the top of the bottom plate, and the hydraulic rod is started to extend to drive the supporting plate to jack up the fixing ring on the left side of the outer side of the screening barrel, so that the screening barrel is kept in an inclined state with the left higher than the right; and finally, the coal mine is injected through a coal feeding barrel, the coal mine