Straight-through internal thread self-locking ball valve

The utility model relates to the field of protection of straight-through type internal thread self-locking ball valves, in particular to a straight-through type internal thread self-locking ball valve which comprises a straight-through ball valve body, a handle is arranged at the top end of the straight-through ball valve body, the handle is rotatably connected with the straight-through ball valve body, an anti-theft inserting plate is arranged on the inner side of the handle and penetrates through the handle, and the anti-theft inserting plate penetrates through the handle. An anti-theft inserting plate is fixedly connected to the left side of the bottom end of the fixing frame, the anti-theft inserting plate is connected with the handle in a sliding mode, a connector is fixedly connected to the left side of the bottom end of the anti-theft inserting plate, and the other end of the connector is rotationally connected with a rotating frame. The anti-theft device has the advantages that by arranging the anti-t