Blowing device of bag-type dust collector

The utility model discloses an injection device of a bag-type dust collector, which relates to the technical field of bag-type dust collectors and comprises a shell, a filter component and a longitudinal frame, an air inlet pipe is mounted on the left side surface of the shell, the filter component is mounted inside the shell, a hollow air storage plate is arranged above the filter component in parallel, and a plurality of air inlet pipes are mounted on the air inlet pipe. The longitudinal frame is welded to the left side of the top end of the shell. Through cooperative use of the longitudinal frame, the sliding groove, the lead screw and the servo motor, the movable block, the transverse plate, the compressed air pump, the air conveying pipeline and the air spraying pipe have the lifting function, the air spraying pipe can descend to be inserted into the upper end of the filter bag, and compressed air generated by the compressed air pump is completely guided into the filter bag through the air conveying pipe