Kitchen waste light and heavy residue flotation separation device

The invention discloses a kitchen waste light and heavy residue flotation separation device. The device comprises a tank body, wherein the tank body comprises a barrel-shaped body and an extension area tangent to the barrel-shaped body, the barrel-shaped body communicates with the extension area, the extension area is arranged in the tangential direction of the barrel-shaped body, the device further comprises a stirring mechanism and a reflux pump, a rotating shaft of the stirring mechanism extends into the tank body, one end of the reflux pump is connected with the water outlet of the extension area through a pipeline, and the other end of the reflux pump is connected with a reflux inlet in the bottom of the tank body through a pipeline. Due to the fact that the density difference of the light and heavy residues in the kitchen waste is small, on one hand, the light and heavy residue flotation separation effect is improved through the combination of the centrifugal effect and buoyancy provided by upward water