Annular time-varying dry fog dust suppression device

The invention relates to the technical field of environment-friendly dust removal, and discloses an annular time-varying dry fog dust suppression device, a manual speed reducer is fixedly mounted in the middle of the top surface of a machine head, levers are symmetrically and fixedly connected to output shafts at the two ends of the manual speed reducer respectively, and an annular time-varying spraying device is fixedly connected to the position, located at the bottom of the machine head, between the levers; an ultrasonic dry fog nozzle is fixedly connected to the bottom of the universal joint nozzle seat, a gas guide rod is fixedly connected to the middle of the top of the ultrasonic dry fog nozzle, a flow guide ring groove is formed in the bottom of the flow equalizing hole, the bottom of the flow guide ring groove communicates with the nozzle opening, and a fixing ring is fixedly installed at the top of the bottom end of the flow guide ring groove; the bottom of the bottom end of the flow guide ring groov