NOVELTY - Device comprises a steam explosion tank, steam generator (2), hydrolyzing tank (4), fermentation tank (5), solid-liquid separator (6), biogas storage tank, storage tank and the steam blasting jar (1) connected with a hydrolysis tank. The hydrolysis tank and fermentation tank are connected and the fermentation tank and solid-liquid separator are connected to the fixing liquid separator along with biogas storage tank and liquid storage tank. The steam blasting jar is provided with an entrance, steam explosion tank feeding port and a steam explosion tank discharging port.    USE - Device used for preparing biogas.    DETAILED DESCRIPTION - Device comprises a steam explosion tank, steam generator (2), hydrolyzing tank (4), fermentation tank (5), solid-liquid separator (6), biogas storage tank, storage tank and the steam blasting jar (1) connected with a hydrolysis tank. The hydrolysis tank and fermentation tank are connected and the fermentation tank and solid-liquid separator are connected to the fixing liquid separator along with biogas storage tank and liquid storage tank. The steam blasting jar is provided with an entrance, steam explosion tank feeding port and a steam explosion tank discharging port. The steam explosion tank discharging port is set with a reaction valve. The internal steam generator is set with steam generator and is connected with steam pipe, steam blasting jar and steam entrance. The steam explosion tank discharging port and collecting box are connected with the hydrolysis tank. The hydrolysis tank is set with hydrolysis liquid with a feeding port. The viewing port, hydrolysis tank discharge port, collecting conveyor are connected to the hydrolysis tank feedstock port. The outside wall of the fermentation tank is set with an insulating layer. The heat preservation layer is set in between the fermentation tank. The top end of the tank is set with an air outlet. The fermentation tank is equipped with a stirrer with a hydrolysis tank discharge port through pipeline and is connected with the fermentation tank feedstock. The solid-liquid separator comprises motor, shaft, outside sleeve and inner circle sleeve. The rotating inner sleeve is cylindrical in structure and the left end is set with a slag outlet. The inner rotating sleeve is set with a cylinder wall through the hole. The inner rotating sleeve is set with a coaxial internal sleeve fixed outside the shaft. The fixing shaft is set with a propeller. The inner rotating sleeve is connected through a connecting rod, a connecting shaft and a motor shaft. The solid-liquid separator is connected through a pipe to the biogas residue storage tank.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the device.    Steam blasting jar (1)    Steam generator (2)    Hydrolyzing tank (4)    Fermentation tank (5)    Solid-liquid separator (6)