Anti-leakage rotary valve for denitration and desulfurization sintering flue gas

The invention relates to the technical field of flue gas treatment, and discloses a denitration and desulfurization sintering flue gas leak-proof rotary valve which comprises a valve body, a feeding port is detachably formed in the upper end of the valve body, a discharging port is fixedly formed in the lower end of the valve body, a buffer assembly is fixedly arranged at the lower end of the feeding port, and conveying ports are formed in the upper end and the lower end of the buffer assembly. Clamping blocks are fixedly arranged on the two sides of the lower end of the buffer assembly, threaded grooves are formed in one side walls of the two clamping blocks, sliding grooves are formed in the inner wall of the buffer assembly, a buffer plate is arranged in the buffer assembly in a sliding mode, sliding blocks are fixedly arranged on the two sides of the buffer plate, and the two sliding blocks slide in the corresponding sliding grooves respectively. According to the rotary valve, the abrasion rate of contact