NOVELTY - A mechatronic waste straw biogas centralized supply system, comprises a pre-treating unit, an anaerating fermenting unit, a biogas purifying unit, a biogas storage unit, and a control unit; where the pre-treating unit comprises a blending tank (1) connected with the raw material transfer belt (1) and a pressure wear-free feeding device; the pressure wear-free feeding device comprises a material tank (2); and the bottom part of material tank is set with a material suction pipe (3) connected with the blending tank (1) and a material discharging pipe (4) connected with the fermenting tank (7).    USE - The mechatronic waste straw biogas centralized supply system is useful for industrial applications.    ADVANTAGE - The mechatronic waste straw biogas centralized supply system feeds the material mechanically and automatically and can achieve the continuous gas generation; where the raw material is fully mixed with microbes and the efficiency is greatly enhanced. Moreover, it uses solar energy to increase and retain temperature and achieves the biogas production around the year. Additionally, it can reduce labor of workers and running cost, enhance the managing level of the biogas engineering, and achieve the automatic control of the biogas engineering system.    DETAILED DESCRIPTION - A mechatronic waste straw biogas centralized supply system, comprises a pre-treating unit, an anaerating fermenting unit, a biogas purifying unit, a biogas storage unit, and a control unit; where the pre-treating unit comprises a blending tank (1) connected with the raw material transfer belt (1) and a pressure wear-free feeding device; the pressure wear-free feeding device comprises a material tank (2); the bottom part of the material tank (2) is set with a material suction pipe (3) connected with the blending tank (1) and a material discharging pipe (4) connected with the fermenting tank (7); the upper part of the material tank (2) is set with a positive pressure gas inlet pipe (5) and a negative pressure gas suction pipe (6); the anaerating fermenting unit comprises a fermenting tank (7); the top part of the fermenting tank (7) is set with a feeding spraying head (10) connected with the material discharging pipe (4); a solar heating device (8) is arranged on the fermenting tank (7) and is connected with the super-conductive pipe (9) on the periphery of the fermenting tank (7); the control unit comprises a human-computer interface control unit (15), a programmable logic controller (14), and sensors and controllers connected with the programmable logic controller (14) and for collecting and controlling the parameters of the system.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the mechatronic waste straw biogas centralized supply system.    Blending tank (1)    Material tank (2)    Material suction pipe (3)    Material discharging pipe (4)    Fermenting tank (7)