Sealing device of rod mill

The utility model discloses a sealing device of a rod mill, which is characterized in that a feed pipe is inserted into a working cavity of the rod mill along the axial direction of the rod mill, and a mechanical seal is arranged at a gap between a feed port of the rod mill and the feed pipe; the mechanical seal comprises a movable ring coaxially fixed to a feeding port of the rod mill and a static ring coaxially fixed to the feeding pipe and matched with the movable ring in an abutting mode, a positioning seat is fixed to the feeding pipe, an elastic part for applying pressing force to the static ring is arranged between the positioning seat and the static ring, and the direction of the pressing force is parallel to the axis of the feeding pipe. When the movable ring synchronously rotates along with the rod mill, the elastic piece can apply pressure to the static ring all the time, so that the static ring abuts against the movable ring, leakage is prevented, it is guaranteed that the rod mill can continuousl