NOVELTY - An automatic shelling assistance agitating type new biogas tank comprises a square biogas tank body, a slide way (4), and an agitating shell breaker (6); where the square biogas tank body is formed by connecting the upper part of biogas tank seat (10) with biogas tank cover (7) and transversely manufacturing a connected clapboard; a triangular inlet passage (1) and triangular outlet passage (8) are respectively connected to left and right sides of the biogas tank body; and a W-shaped upper and lower bending slide ways are set from lower liquid level to high liquid level of the biogas liquid.    USE - The automatic shelling assistance agitating type new biogas tank is useful for biogas production in vast rural areas, enterprise and public institution, and school.    ADVANTAGE - The automatic shelling assistance agitating type new biogas tank solves the problems of current biogas tank for fermentation production comprising unreasonable structure and lower gas generation.    DETAILED DESCRIPTION - An automatic shelling assistance agitating type new biogas tank comprises a square biogas tank body, a slide way (4), and an agitating shell breaker (6); where the square biogas tank body is formed by connecting the upper part of biogas tank seat (10) with biogas tank cover (7) and transversely manufacturing a connected clapboard; a triangular inlet passage (1) and triangular outlet passage (8) are respectively connected to left and right sides of the biogas tank body; a vertical clapboard with overflow notch (3) is connected in the biogas tank cover to separate into water pressure chamber (2) and liquid storage chamber (5) parts; a W-shaped upper and lower bending slide ways are set from lower liquid level to high liquid level of the biogas liquid on front and rear two lateral wall plates of the biogas tank body; and the agitating shell breaker is mounted on the slide way.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the automatic shelling assistance agitating type new biogas tank.    Triangular inlet passage (1)    Water pressure chamber (2)    Overflow notch (3)    Slide way (4)    Liquid storage chamber (5)    Agitating shell breaker (6)    Biogas tank cover (7)    Triangular outlet passage (8)    Biogas tank seat (10)