Rotary unloader convenient to maintain

The rotary unloader convenient to maintain comprises an unloader body, a bearing and a cover plate, a feeding port is formed in one side of the outer wall of the upper end of the unloader body, a discharging port is formed in the outer wall of the lower end of the unloader body, and first screw holes distributed in a rectangular array mode are formed in the outer wall of the side, deviating from athrough hole, of the unloader body. Cover plates are arranged on the outer walls of the two sides of the unloader body, sealing gaskets are attached and fixed to the outer walls of the sides, opposite to the unloader body, of the cover plates, bearings are embedded into the two sides of the inner wall of the unloader body, rotating shafts are rotatably mounted in the bearings, and second screw holes are formed in the outer walls of one sides of the rotating shafts. An impeller is arranged on the outer wall of one side of the rotating shaft, and a fixing block is installed on the outer wall ofthe side, opposite to the