Sealing device for preventing sundries from entering pug feeding machine bearing

The utility model relates to the technical field of sealing devices for preventing sundries from entering bearings of pug feeding machines, and discloses a sealing device for preventing sundries from entering bearings of pug feeding machines, which comprises a stock bin and a spiral feeding shaft lever arranged in the stock bin. A sealing device box is arranged on the outer side face of a stock bin, a limiting ring is arranged in the sealing device box, a plurality of connecting pipes are connected between the limiting ring and a lower box body, a bearing connecting cover is arranged on the side face of the limiting ring, and a bearing mounting groove is formed in the center of the bearing connecting cover, so that a bearing can be mounted in the bearing mounting groove; through cooperation of the lower box body, the limiting ring, the bearing connecting cover, the first fixing bolt and the first nut, the bearing can be installed on the outer side wall of the stock bin, materials are prevented from entering t