Moving ring assembly and dry gas sealing device

The utility model relates to the technical field of mechanical sealing, in particular to a moving ring assembly and a dry gas sealing device.The moving ring assembly comprises a shaft sleeve arranged on a rotating shaft in a sleeving manner and rotating along with the rotating shaft, a containing groove is formed in the shaft sleeve, a moving ring used for rotating along with the shaft sleeve is arranged on the shaft sleeve, and the moving ring is arranged on the containing groove in a sleeving manner; an annular groove is formed in the shaft sleeve, an elastic maintaining piece is arranged in the annular groove and located between the shaft sleeve and the movable ring, and the elastic maintaining piece is arranged in the circumferential direction of the shaft sleeve and used for enabling the shaft sleeve and the movable ring to be kept coaxial. The utility model has the effects of keeping the moving ring and the shaft sleeve coaxial and reducing the damage of the moving ring. 本申请涉及机械密封的技术领域，尤其是涉及一种动环组件及干气密封装