Anti-microparticle sealing device for high-speed main shaft

• Main Authors: LIU HEQIANG, SUN FAN, GUO LIPENG, YU GUANGXU, WEI YUAN, JANG SE-JIN, REN HUILING, DAI YUHONG, YAO FEIYANG
• Format: Patent
• Language: Chinese; English
• Published: 26.08.2022
• Subjects: BLASTING; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses an anti-microparticle sealing device for a high-speed main shaft, which is characterized in that a movable sealing ring is fixed on the main shaft, and a first concave-convex guide structure is annularly arranged on the periphery of the movable sealing ring; the static sealing ring is fixedly connected with the spindle seat and located on the peripheral side of the movable sealing ring, a dust collecting groove is annularly formed in the inner side wall of the static sealing ring, a plurality of dust discharging holes penetrating through the outer side wall of the static sealing ring are formed in the groove bottom of the dust collecting groove, and a mounting groove is annularly formed in the other end of the inner side wall of the static sealing ring. A second concave-convex guide structure is arranged at one end of the pore airtight ring, the second concave-convex guide structure and the first concave-convex guide structure are matched to form a bow-shaped labyrinth channel, a h