Anti-bacterial fermentation liquor storage tank

The utility model discloses an anti-contamination fermentation liquor storage tank, and particularly relates to the technical field of fermentation liquor storage tanks, the anti-contamination fermentation liquor storage tank comprises a storage tank main body, an air conveying assembly is fixedly arranged at the top of the storage tank main body and used for conveying air into the storage tank main body, the air conveying assembly comprises an air compressor, and a support is fixedly arranged at the bottom of the air compressor and used for conveying air into the storage tank main body. The support and the storage tank body are fixed through four bolts, two air boxes are arranged on one side of the air compressor, and three filter elements are arranged in each of the two air boxes. External air is filtered through the three filter elements in the two air boxes, clean and sterile air is automatically conveyed into the storage tank body through the air compressor, and micro-positive pressure above the inner ca