Building engineering construction dust falling device

The utility model discloses a building engineering construction dust fall device, relates to dust fall device technical field, including the water tank, the upper surface of water tank is rotatingly connected with the rotatory stand, the upper end of rotatory stand is fixedly connected with the spray cylinder, the inner wall of spray cylinder is fixedly connected with the water guide ring, the arc surface of water guide ring is fixed and is communicated with the atomizing nozzle, the atomizing nozzle is fixed and communicated with the atomizing nozzle. The surface of the rotating frame is fixedly connected with a water pump, the water inlet end of the water pump is communicated with the water tank, the water drainage end of the water pump is communicated with the water guide ring, the inner wall of the spraying barrel is fixedly connected with an exhaust fan, the outer wall of the spraying barrel is provided with a cleaning structure, and the cleaning structure comprises a fixing ring. In the process of suppr