Machine for wetting dust

The utility model belongs to a mixing device for powder material humidification, particularly a device used for humidification when powder dust collected by dry dust removing systems are convey outwards. The utility model comprises a barrel body, a stirring shaft, and a nozzle. A multiple screw (4), axial stirring vanes (5) and stirring rods (6) which are arranged in a helical mode and are installed in a sloped mode are installed on the stirring shaft. The nozzle is a fan-shaped nozzle which can jet liquid in a sloped direction to guarantee the full diffusion of powder dust and water before the powder dust and the water enters a mixing barrel, and the powder dust and the water are fully mixed under the impact of the stirring rods which rotate with a high speed to achieve the effect that secondary dust blowing can be avoided by using little water. As a result, the utility model not only can save water and energy, but also can be used for humidifying powder dust with strong adhesive property and poor hydrophilic property.