SWYR-5 type soot blower is a soot blower that uses steam or air as the blowing medium and is specifically used to blow ash from the heating area of a rotary air preheater. The soot blowing gun barrel, nozzle diameter on the gun barrel, and arrangement spacing of the SWYR-5 soot blower are specially designed according to different air preheaters and installation requirements. During operation, the soot blowing gun barrel only performs telescopic motion, while the rotary air preheater performs rotational motion. Therefore, the soot blowing trajectory of each nozzle is a few turns of Archimedean spiral, and several nozzles work together to complete the blowing of the entire air preheater. The airflow emitted by the nozzle has a certain diffusion angle, and the width of the spray coverage varies with the distance from the nozzle to the fan plate of the air preheater. Usually, when the distance between the nozzle and the fan-shaped plate is 200 millimeters, the coverage surface width is about 64 millimeters, while when the distance is 300 millimeters, the coverage surface can reach 95 millimeters.