Potato cleaning machine

The invention discloses a potato cleaning machine. An upper cleaning channel communicates with and a lower cleaning channel through a feeding pipe on the outer side wall of an outer cylinder; a discharge port communicating with the lower cleaning channel is arranged on the outer side wall of the outer cylinder; an upper ring and a lower ring of drainage holes are arranged on a drum; and positionsof the drainage holes correspond to the lower end positions of side brushes on the drum. According to the invention design, a water inlet pipe is opened; potatoes enter the machine from a feeding hopper; after entering the machine, the potatoes slid into a space between an upper brush and a lower brush in the upper cleaning channel; and a motor drives the drum to rotate. Therefore, the potatoes can be washed by the brushes in the lower part; under the action of friction force, the potatoes are driven to rotate; side brushes are used for cleaning the two sides of the potatoes; the upper ends ofrubber layers are wavy and grooves and bulges alternate, so that when the potatoes are clamped into the grooves on the upper side, under the buffering of springs, the potatoes can be turned over by the bulges on the lower side so as to realize all-around cleaning on the potatoes.