Multiplex pulse air-flow mechanical automatic control box

The utility model relates to a multiplex pulse airflow mechanical automatic control box, which comprises an air box, a star-shaped gate divider and a drive system, wherein, the an air inlet, a blowback wind gap and a pressure release gap are arranged on the air box, a blowback air valve is arranged on a position corresponding to the blowback wind gap in the air box, the star-shaped gate divider rotatablely arranged in the air box and is connected with the drive system, a triggering structure which controls the open and close of the blowback air valve is arranged on the star-shaped gate divider, and the pressure release gap is provided with a pressure limiting device. The automatic control box controls the open and closes of a blow-back-air valve in a purely mechanical method to generate pulse airflow, does not need high-pressure gas to control the conduction of the valve, eliminates a plurality of electronic control components and electronic control systems, and has simple structure, reliable work and use cos