Drawing roller sealing structure

The utility model discloses a novel drawing roller internal labyrinth sealing structure which comprises a roller, a shaft head, a main shaft, an outer check ring, a left seal, a sealing baffle ring, a right seal, a left fixing seat, an oil slinger, a bearing, a bearing pressing block, a right fixing seat and a round nut. A sealing mechanism is specially designed, protrusions of rectangular teeth are arranged on a part on a shaft in a staggered mode, lubricating oil in a drafting box body can be effectively prevented from leaking outwards by means of the throttling effect of labyrinth sealing, a semi-circular-ring groove is formed in a check ring, the circular-ring groove can play a role in throttling, external acid liquid and gas are prevented from permeating into the drafting box body, and the sealing effect is good. And the corrosion to the box body parts is avoided. The sealing structure is excellent in sealing effect, and the internal structure of the drawing roller is effectively prevented from being cor