Surface blasting dust treatment device

A surface blasting dust treatment device comprises a bottom plate, a rotating mechanism arranged in an overhead mode is arranged on the bottom plate, a lifting mechanism matched with the rotating mechanism is arranged on the bottom plate, the rotating mechanism comprises a gear and a threaded rod meshed with the gear, and the end of the threaded rod is connected with a first motor driving the threaded rod to rotate; the lifting mechanism comprises a lead screw rotationally connected with the bottom plate, and a lifting plate for driving the rotating mechanism to ascend and descend is arranged on the lead screw. Compared with the prior art, dust is sprayed through the water spraying assembly arranged on the gear, the first motor drives the threaded rod to rotate so as to drive the gear to rotate, then the spraying angle of the water spraying assembly is adjusted, under the action of the gear, the spraying angle of the water spraying assembly is not limited, and therefore the spraying range is enlarged; and mea