Closed horizontal type double-layer cylinder aerobic fermentation tank

The utility model discloses a closed horizontal type double-layer cylinder aerobic fermentation tank which comprises a support device, a tank body, a power drive device and a ventilation device, wherein the tank body and the power drive device are arranged on the support device respectively; the tank body comprises an inner cylinder and an outer cylinder; a circular cavity is formed between the inner cylinder and the outer cylinder; a water-permeable hole is formed in the inner cylinder; the power drive device is in transmission connection with the outer cylinder; a feed structure and an air outlet pipe joint are arranged at one end of the inner cylinder, and a discharge structure is arranged at the other end of the inner cylinder; a water outlet pipe communicated with the cavity is arranged on the outer cylinder; the ventilation device extends into the inner cylinder. The closed horizontal type double-layer cylinder aerobic fermentation tank disclosed by the utility model has the advantages of simple structure, large treatment quantity, relatively short fermentation period, uniform material fermentation degree, good treatment effect and high automation degree; the fermentation treatment is performed in a totally-closed manner, no foreign smell is generated in the treatment process, the kitchen waste is turned into wealth, the quality of the produced nutrient soil is improved, and possible threat of the kitchen waste to the environment and human bodies is avoided so as to realize harmless and resource utilization of the kitchen waste.