Belt blowing device of coal feeder

The utility model belongs to the technical field of coal feeders, and discloses a coal feeder belt purging device which is installed on a coal feeder. The purging device comprises a nitrogen header pipe connected with a high-pressure nitrogen source, the nitrogen header pipe is connected with nitrogen conveying pipes, and the nitrogen conveying pipes are annularly distributed around two coal feeder rollers and a coal feeding conveying belt; and a plurality of high-pressure nitrogen nozzles over against the bottom of the coal feeding conveying belt are uniformly arranged on the nitrogen conveying pipe. The purging device comprises mounting plates symmetrically arranged on the two sides of the coal feeding conveying belt, coal scraping structures are arranged on the mounting plates, and the coal scraping structures abut against the upper portion of the coal feeding conveying belt. The coal feeder belt blowing device is reasonable in structure, beneficial to blowing off raw coal particles adhered to the inner si