Methane fermentation device for all-buried concrete pouring interlayer-composite cylindrical main body type fermentation tank with volume of 1,000m or over

The invention discloses a methane fermentation device for an all-buried concrete pouring interlayer-composite cylindrical main body type fermentation tank with the volume of 1,000m or over, belongs to the technical field of methane fermentation equipment and aims to solve the problems of poor structure and low strength of a methane fermentation tank body of the methane fermentation device of an existing all-buried concrete fermentation tank and a complicated overall structure of the methane fermentation device. The adopted methane fermentation tank body is an in-place concrete pouring interlayer-composite methane fermentation tank body; a check hole and a controller port are formed in an elliptical sealing head of the methane fermentation tank body; the check hole is provided with a sealing opening cover; the controller port is connected with an instrument integration monitoring displayer; a methane residue output pipe which is sleeved on a central sleeve is arranged on a central shaft of the methane fermenta