Flotation machine for seed breeding

The invention relates to a flotation machine for seed breeding, which comprises: a flotation box which is arranged in an opening shape, one side of which is provided with an inclined groove, the water falling height of the inclined groove is less than the height of the flotation box, and the flotation box is internally provided with at least two flotation grooves; the material receiving assembly is arranged on one side of the flotation box and used for collecting unqualified seeds and flotation liquid flowing out of the inclined groove; the backflow assembly is arranged at the side end of the flotation box and communicates with the material receiving assembly and the flotation tank; the bearing beam is arranged at the opening of the flotation box and is connected with a hydraulic cylinder mounted on the flotation box; the stirring assembly is installed on the bearing beam, one end of the stirring assembly penetrates through the bearing beam and extends into the flotation tank, an L-shaped plate is rotationall