The utility model discloses a novel flotation machine, including motor, belt, impeller, stator, main shaft etc, the flotation cell below is arranged in to motor and belt, and the motor passes throughthe belt to be connected with the main shaft, installs the impeller on the main shaft, scraper support is fixed in the flotation cell top, and scraper blade driving shaft and scraper blade driven shaft are parallel to each other, are located the both sides of flotation cell respectively, and scraper blade driving shaft and scraper blade driven shaft are all fixed on scraper support through the bearing, and the scraper blade driving shaft is connected with the scraper blade motor, there is belt shaft scraper blade driving shaft and scraper blade driven shaft outside all cover, and the scraper blade belt overlaps on two belt shaft, is equipped with the scraper blade blade above the scraper blade belt. The flotation device, the operating surface distributes in different position with transmission, has avoided the bodily injury of moving part such as belt to the workman, it is big that the scraper means of design scrapes the bubble area, avoids appearing scraping the bubble dead angle, reduces the dwell time of flotation foam in the flotation cell.