Anti-falling structure for assembly and maintenance of valve seat of floating ball valve

The utility model relates to an anti-falling structure for assembly and maintenance of a floating ball valve seat. The anti-falling structure comprises a valve body, the ball body is rotationally arranged in the valve body and used for controlling opening and closing of the floating ball valve; the connecting body is connected with the valve body in a sealing manner and is used for mounting a valve seat which is in sealing fit with the ball body; the elastic check ring is fixedly arranged in the connecting body and used for limiting the position of the valve seat. The floating ball valve seat assembly and maintenance anti-falling structure is reasonable in design, the risk that the valve seat falls off when the valve seat is installed can be effectively reduced, and the sealing face of the valve is prevented from being damaged; and through the design of the check ring groove and the taking-out hole, the elastic check ring is convenient to disassemble and assemble, and operation of assembling personnel is faci