Single-arm moving type dry fog dust suppression device for limestone storage yard

The utility model discloses a single-arm mobile type dry fog dust suppression device for limestone yard, including dry fog host and spray subassembly, dry fog host is placed the end position of one end of mobile arm beam, spray subassembly includes first ring pipe, second ring pipe and connecting pipe, connecting pipe is located first ring pipe and second ring pipe, and the first ring pipe is located in the second ring pipe. A first liquid conveying pipe is arranged on the side face of the dry fog main machine, a second liquid conveying pipe is arranged at the bottom of the first liquid conveying pipe and connected with a first annular pipe, a second nozzle is arranged at the bottom of the second annular pipe, and first nozzles are arranged on the inner surface of the first annular pipe and the inner surface of the second annular pipe correspondingly. A lifting mechanism is arranged between the first ring pipe and the movable arm beam; the diameter of the second annular pipe is larger than that of the first a