NOVELTY - A generation and storage integrated methane tank comprises a body (1), a discharge water seal tube (2), an inclined feed tube (3), and a top cover; where the inclined feed tube (3) is arranged on one side of the body; the discharge water seal tube (2) is arranged on other side of the body; the discharge water seal tube (2) and the inclined feed tube (3) are communicated with cavity of the body; the top cover is a floating top cover (14) mounted in the body; a pulley holder (7) is mounted on bottom surface of floating top cover; and a grid (12) is mounted at the inlet of the inclined feed tube.    USE - The generation and storage integrated methane tank is useful for methane production and storage.    ADVANTAGE - In utilizing the generation and storage integrated methane tank, the gas generation rate is high; and the pressure in the tank is constant and adjustable; thus, it guarantees the normal working of gas consumption equipment. Moreover, the floating top cover is detachable, and the operator can remove the residual outside the tank safely and conveniently. Additionally, the use of the grid prevents the entry of large articles comprising plastic bags and branches into the tank.    DETAILED DESCRIPTION - A generation and storage integrated methane tank comprises a body (1), a discharge water seal tube (2), an inclined feed tube (3), and a top cover; where the inclined feed tube (3) is arranged on one side of the body; the discharge water seal tube (2) is arranged on the other side of the body; the discharge water seal tube (2) and the inclined feed tube (3) are communicated with the cavity of the body; the top cover is a floating top cover (14) mounted in the body; a pulley holder (7) is mounted on the bottom surface of the floating top cover; the pulley is inserted into the slide rail (8) on the inside wall of the body; a weight (6) is mounted on the bottom beam of the frame (4) of the floating top cover; a grid (12) is mounted at the inlet of the inclined feed tube; and the slide rail (9) is located above the inclined feed tube (3) and the lower opening of the discharge water seal tube (2).    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the generation and storage integrated methane tank.    Body (1)    Discharge water seal tube (2)    Inclined feed tube (3)    Frame (4)    Rectangular frame (4)    Sealing storage cover (5)    Weight (6)    Pulley holder (7)    Slide rails (8,9)    Feed well (10)    Movable cover plate (11)    Grid (12)    Floating top cover (14)