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 structu