The invention discloses a continuous bubble scraping type multilayer
inflatable bottom transmission type flotation
machine. The flotation
machine comprises a flotation groove; a mechanical stirring device, an annular column type micro-bubble generator and a bubble scraping device are arranged inside the flotation groove; the mechanical stirring device is located below a mineralized bubble foam layer; the annular column type micro-bubble generator is arranged on the periphery and the upper part of an
impeller in a three-layer annular column type mode, air is transversely led into a bottom circular ring of the micro-bubble generator through an opening in the side part of the bottom of the flotation groove, and the purpose of inflation is achieved; the bubble scraping operation adopts two scraping plates for continuous scraping alternatively, and a long-
stroke transmission belt wheel is matched. According to the flotation
machine, the existing flotation machine mechanical stirring deviceis arranged at the bottom, the problems of middle foam stagnation and secondary
sedimentation of mineralized particles are solved, so that the flotation index is improved; the annular column type micro-bubble generator is used as an air inflation device so that the
diameter of the bubbles can be reduced, the
sedimentation area is reduced, and the foam layer is stable and controllable; and the scraping plates of the flotation machine are two alternative scraping plates, and the belt wheel transmission is adopted, so that the mineralized foam can be timely and continuously scraped, the secondarysedimentation is prevented, and the flotation
recovery rate is improved.