Dynamic sealing structure and rotary kiln apparatus

Provided are a dynamic sealing structure and a rotary kiln apparatus, belonging to the technical field of sealing. The dynamic sealing structure comprises a kiln tail, a discharging cover, a sealing mechanism, a guiding mechanism and a balancing device. The discharging cover comprises a discharging cover cylinder and a discharging cover end face connected to same, the discharging cover cylinder is arranged on the outer side of a circumferential wall of the kiln tail in a sleeving manner, and the discharging cover end face and the end face of the kiln tail are arranged at an interval. The sealing mechanism is arranged between the discharging cover cylinder and the kiln tail and is connected to an inner wall of the discharging cover cylinder. The guiding mechanism is arranged between the inner wall of the discharging cover cylinder and the outer side of the kiln tail, and is located on one side or two sides of the sealing mechanism in the axial direction of the rotary kiln, a rotating gap is provided between the guiding mechanism and the kiln tail, and the balancing device is connected to the outer side of the discharging cover cylinder. The dynamic sealing structure has a good overall sealing effect, is suitable for being configured into a coal, oil shale or biomass pyrolysis rotary kiln, and can solve the problem of poor sealing performance caused by jumping of a rotary kiln. The rotary kiln apparatus is high in terms of practicability and wide in terms of application prospects.