1. The working devices of the pneumatic hammer mainly include: hammer head equipped with magnet, collective plate, three-way solenoid valve, spring.

2. The compressed air is usually above 3kg/cm. When the compressed air is not introduced into the pneumatic percussion hammer, the hammer head is sucked on the substrate. When the three-way solenoid valve is energized, the compressed air flows into the body of the pneumatic percussion hammer, and the hammer head is forcibly pushed away by the compressed air flow, so that the hammer head is separated from the base plate at a high speed and hits out. The magnetic piston falling at high speed hits the substrate, and its impact force is transmitted to the silo, and the attached dust is shot down with a strong impact force. When the three-way solenoid valve stops energizing, the compressed air in the pneumatic hammer body is discharged through the three-way solenoid valve, so the hammer head is slowly raised by the return spring and then reset close to the base plate to achieve an impact.