Humidifier for fine dust

The utility model relates to a powder dust humidifying device, particularly a device used for humidification when powder dust of dry dust removing systems are conveyed outwards. A guiding rail 4 which is supported by a supporting roller 15 is installed at one end of an outward rotating barrel 3, the lower end of which is provided with a discharge port, and the other end of outward rotating barrel 3 is installed on a shaft of a screw conveyor 11. An inner barrel 6, a motor 10, the supporting roller 15 and a bearing seat 16 are all slantwise installed on a base 12; a feed port 7 is installed above the high end of the inner barrel 6; a scraper 2 is installed on a part, which extends into the outward rotating barrel 3, of the inner barrel 6; a speed reducer 9 is installed on the outer side of an end cover 8 of the inner barrel; a slanting atomizing nozzle 13 is installed on one end plate. The utility model has the advantages of simple structure and uniform mixing.