NOVELTY - The homoiothermy anaerobic digestion device comprises a fermentation tank, a tank deck, a charge pump (5) fixed on the fermentation tank, a first circulation pump (6), a second circulation pump (7), a third circulation pump (8), a biogas reflux pump, and an inoculation and delivery pump (9). A first inner ring pipe, a second inner ring pipe, a third inner ring pipe and a fourth inner ring pipe are sequentially arranged from top to bottom on an inner wall of the fermentation tank. A jet flow component is arranged in a center part of the device.    USE - The homoiothermy anaerobic digestion device is useful for processing domestic rubbish using sealing water gas linkage batch-type internal rotation.    ADVANTAGE - The anaerobic digestion device is cost-effective and easy to install, and saves energy consumption, and has improved yield.    DETAILED DESCRIPTION - The homoiothermy anaerobic digestion device comprises a fermentation tank, a tank deck, a charge pump (5) fixed on the fermentation tank, a first circulation pump (6), a second circulation pump (7), a third circulation pump (8), a biogas reflux pump, and an inoculation and delivery pump (9). A first inner ring pipe, a second inner ring pipe, a third inner ring pipe and a fourth inner ring pipe are sequentially arranged from top to bottom on an inner wall of the fermentation tank. A jet flow component is arranged in a center part of the device. Output ends of the second circulation pump and the third circulation pump are connected with the first, the second and the third inner ring pipes. An output end of the first circulation pump is connected with the jet flow component, the fourth inner ring pipe and a mud-sand separator. An output end of the charge pump is connected with the mud-sand separator and the first circulation pump. An overflow drain port and a balance drain port are fixed on a side wall of the fermentation tank and connected with a solenoid valve passed through a transfer pipe. A filtrate collection pump is connected with a slurry mixing tank. The overflow drain port and the balance drain port are connected with input ends of the first, the second and the third circulation pumps. An adjoining pipe, a water inlet manifold and a water outlet manifold are arranged on an external wall of the fermentation tank. The output end of the first circulation pump is divided into two parts, where one part is penetrated through a side wall of the fermentation tank and connected with the fourth inner ring pipe. An output end of another part of the first circulation pump is penetrated through the tank deck to be passed in the fermentation tank and passed into the jet flow component. The water inlet manifold and the water outlet manifold are provided to adjust temperature through the adjoining pipe to realize homoiothermy fermentation process. The adjoining pipe increases strength of the fermentation tank. A jet orifice is fixed on the first, the second and the third inner ring pipes. A nozzle of the jet orifice is fixed along tangential direction of the fermentation tank. The second and the third circulation pumps are connected with the second and the third inner ring pipes. A bottom part of the jet orifice is fixed below the fermentation tank and fixed along direction of a core base. A biogas reflux jet ring is fixed on a fixed support of the jet flow component. The mud-sand separator, the first circulation pump and the fermentation tank are connected together to complete mud-sand separation process. The biogas reflux jet ring is connected with a biogas reflux pump through a biogas reflux pipe. An instrument interface is fixed on a top part of the tank deck. A bottom part of the fermentation tank is arranged in an upside-down taper or cone base.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a homoiothermy anaerobic digestion device.    Charge pump (5)    First circulation pump (6)    Second circulation pump (7)    Third circulation pump (8)    Delivery pump. (9)