▎ 摘　　要

NOVELTY - Bidirectional rotary seal structure has a shaft sleeve (1), a dustproof lip (4), a sealing lip (6) and a circlip (9). The shaft sleeve is axially sleeved on the outside of the main shaft. A first O-shaped groove (3) is axially opened on one side of the inside of the shaft sleeve and a dust lip is embedded at the position of the first O-shaped groove. The dust lip includes a positioning ring and the outer edge of the positioning ring is tightly embedded in the first O-shaped groove. A second O-shaped groove is axially opened on the other side inside the shaft sleeve and a sealing lip is embedded at the position of the second O-shaped groove. The sealing lip includes an outer ring and an inner ring, and the middle part between the outer ring and the inner ring is integrally connected. The outer ring is tightly embedded in the second O-shaped groove. The inner side wall of the inner ring and the outer side wall of the main shaft are in contact with each other. USE - Bidirectional rotary sealing structure for centrifuge shaft. ADVANTAGE - The bidirectional rotary sealing structure for centrifuge shaft has good sealing performance. DESCRIPTION OF DRAWING(S) - The drawing shows an exploded view of a bidirectional rotary sealing structure for centrifuge shaft. 1Shaft sleeve 3First O-shaped groove 4Dustproof lip 6Sealing lip 9Circlip