▎ 摘　　要

NOVELTY - The utility model claims a single-acting ring axial movable packing sealing device of internal mixer, comprising a fixed ring, graphite, a movable ring, a gasket; a spring and a pressing nut; the fixed ring is fixedly installed in the inner side wall glass wallboard of the internal mixer; the graphite is embedded on the fixed ring end sealing surface; the movable ring and the rotor are transitionally matched and mounted with a key pin; when the rotor rotates, the key pin drives the movable ring to rotate synchronously; the pressing nut is sleeved on the outer screw thread of the rotor; the inner cavity of the pressing nut is provided with a spring; the torsion pressing nut moves along the axial direction of the rotor; the pressing nut drives the spring and the gasket; the movable ring moves along the axial direction to press the sealing surface of the fixed ring to generate friction sealing effect to prevent leakage of the rubber material; at the same time, because the fixed ring sealing surface is embedded with graphite material; between the movable ring and the fixed ring in the mechanical contact friction sealing movement process, graphene is stripped; the graphene is helpful for lubricating so as to achieve the purpose of oilless self-lubricating; it greatly reduces the use cost, but also reaches the energy-saving and environment-friendly requirement; It satisfies the actual use requirement.