Self-floating type impeller aerator

The utility model discloses a self-floating type impeller aerator. The self-floating type impeller aerator comprises a floating body impeller (1), wherein the floating body impeller (1) is provided with a power device (3) through a connecting supporting plate (2) and comprises a sealing floating body (11) and vanes (12), the power device (3) comprises a vertical motor (31), a speed reduction mechanism (32) and a rotary flange (33), each vane (12) is shaped like an L on the whole and evenly provided with a plurality of water distribution holes (6) and water distribution grooves (7), and the vanes (12) are fixedly and adjustably connected with the sealing floating body (11) through vane bottom plates (13). The self-floating type impeller aerator not only effectively resolves the problem that a traditional impeller aerator needs a floating ball and other bearing devices to bear an aerator power device, so that the aerator equipment is large in size, not convenient to produce, convey, assemble and use, and effect