Valve rod protection device

The utility model relates to the technical field of protection devices, and discloses a valve rod protection device which comprises a water conveying pipeline, the outer wall of the water conveying pipeline is fixedly connected with a splicing pipe, and the outer wall of the splicing pipe is movably connected with a protection device. The protection device comprises a first shell, a square hole, a sealing ring, heat preservation cotton, a butt joint block, a buckle and a second shell, and the outer wall of the splicing pipe is movably connected with the first shell. After a worker installs the valve, a first shell, a water conveying pipeline and a second shell are installed on the outer wall of a splicing pipe, butt joint blocks are connected into square holes in a butt joint mode, buckles can be clamped into the square holes to be fixed, heat preservation cotton can prevent the situation that due to the too low temperature, internal water is frozen, the valve expands and cracks, and normal use of people is a