The blowing and sucking
machine comprises a
machine body, one side of the
machine body is connected with a speed adjusting device, the speed adjusting device comprises a control sleeve, an adaptive rod, a connecting
pipe, adaptive holes, an adaptive
pipe, a matching rod, a matching sleeve and a fixing
pipe, the adaptive holes are formed in the outer wall of the adaptive pipe, the matching rod is connected to one end of the adaptive rod, and the matching sleeve is connected to the other end of the adaptive rod. A
locking mechanism is arranged on the outer side of the connecting pipe and comprises a sliding sleeve, a receding groove, a movable block, an
extrusion spring, a guide rod, a guide hole, a connecting plate, a transverse plate, a limiting block, a linkage block, a connecting block, a movable plate and a connecting spring, the receding groove is formed in the movable plate, and the guide rod is sleeved with the
extrusion spring; the guide rod is connected to one side of the movable block, the guide hole is formed in the connecting block, the transverse plate is installed on one side of the connecting plate, the limiting block is arranged on the outer side of the connecting pipe, and the connecting spring is connected with the two adjacent linkage blocks. The blowing and sucking machine solves the problem that a traditional blowing and sucking machine is unstable in air speed fixing and speed adjusting structure.