Bucket elevator for shot blasting machine

The bucket elevator for the shot blasting machine sequentially comprises an upper cover body, a middle cover body and a lower cover body from top to bottom, an upper belt wheel is installed in the upper cover body, a lower belt wheel is installed in the lower cover body, the lower belt wheel is in driving connection with the upper belt wheel through a conveying belt, kidney-shaped holes are formed in the two sides of the lower cover body respectively, and the middle cover body is connected with the middle cover body. The two ends of a rotating shaft of the lower belt wheel penetrate through the corresponding kidney-shaped holes to extend to the two sides of the lower cover body respectively, bearing seats are installed at the two ends of the rotating shaft respectively, adjusting assemblies are fixedly installed on the two sides of the lower cover body respectively, and the bearing seats are in sliding connection with the adjusting assemblies. When the conveying belt is loosened, the bearing seat is pushed to