Self-injection rotary agitation type flotation machine with impeller

The utility model belongs to the technical field of ore grain separation flotation, and in particular relates to a self-injection rotary agitation type flotation machine with an impeller. The flotation machine comprises a flotation tank body, wherein a bubble scraping mechanism is arranged on the upper side of the flotation tank body, a false bottom is arranged on the bottom at the inner side of the flotation tank body; and the flotation machine further comprises a circulating device, an air suction mixing device and an impeller self-injection mixing device, wherein the circulating device is used for sucking ore pulp and delivering the or pulp to the air suction mixing device to be subjected to gas-liquid mixing, the air suction mixing device is used for fully mixing the ore pulp with air, and the self-injection mixing device is used for rotatably mixing the ore pulp in the flotation tank body. Through the flotation machine, not only is the air suction volume of the whole flotation tank body effectively increased, but also the circulation amount of the ore pulp in the flotation tank body is increased; and moreover, a turbulent flow field which is beneficial to the ore pulp flotation is also created in the flotation tank body, so that an flotation effect is optimized. The self-injection rotary agitation type flotation machine with the impeller has low operation energy consumption and a good flotation effect.