▎ 摘　　要

NOVELTY - The utility model claims a graphene sealing device of internal mixer, comprising a fixing ring and a lower sealing ring, the lower surface of the fixing ring is fixedly connected with an upper sealing ring, the lower surface of the upper sealing ring is fixedly connected with an arc-shaped bump, the arc-shaped convex lower surface arc top point is fixedly connected with a first sealing ring, the upper surface of the lower sealing ring is provided with a groove, the inner bottom wall of the groove is fixedly connected with a second sealing ring, two sides of the second sealing ring are provided with a third sealing ring, the groove is matched with the arc bump. the graphene sealing ring and the lower sealing ring are matched with each other, the arc bump is matched with the groove, the gap between the upper and lower sealing ring is reduced, the first sealing ring and the second sealing ring of the material graphene against each other, at the same time, the two sides of the second sealing ring are provided with a third sealing ring, improving the sealing property, the sealing ring of the material is graphene temperature resistance, high wear resistance, so as to effectively seal the internal mixer.