Inner wall accumulated material cleaning device for pulverized coal conveying pipeline

The utility model discloses an inner wall accumulated material cleaning device for a pulverized coal conveying pipeline. The inner wall accumulated material cleaning device comprises a protective bent pipe, a gas conveying pipe, a gas flow switching mechanism and a rotating part, the protective bent pipe is arranged on the inner wall of the conveying pipeline and communicates to the outside of the conveying pipeline; one end of the gas conveying pipe is connected with a high-pressure gas source, and the other end of the gas conveying pipe penetrates through the protection bent pipe to be connected with a gas flow conversion mechanism arranged in the conveying pipeline. And the rotating part is arranged in the conveying pipeline and is connected with the airflow conversion mechanism. The cleaning efficiency of accumulated slag on the inner wall of the conveying pipeline is improved. 一种用于煤粉输送管道的内壁积料清理装置，包括保护弯管、输气管、气流转换机构和旋转部分；所述保护弯管设置在输送管道的内壁上，且其连通至输送管道外部；所述输气管的一端与高压气源连接，输气管的另一端穿过保护弯管与设置在输送管道内的气流转换机构连接；所述旋转部分设置