Leakage-proof flange assembly

The utility model relates to the technical field of flanges, and discloses a liquid leakage prevention flange assembly which solves the problems that layered installation and sealing cannot be achieved and protection cannot be achieved in the current market, the liquid leakage prevention flange assembly comprises daub, the outer surface of the lower end of the daub is fixedly connected with a layered sealing device, and the outer wall of the layered sealing device is movably connected with a flange protection sleeve. The inner surface of the lower end of the flange protection sleeve is movably connected with a drainage pipe, the outer wall of the drainage pipe is fixedly connected with a protection piece, a connecting clamping ring and the inner fixing pipe are fixed through an arranged fixing ring, the connecting clamping ring is conveniently inserted into a limiting groove to be connected and fixed, and a sealing gasket is fixed to the inner fixing pipe. And sealing is conducted when the internal fixing pip