Valve dismounting device

The utility model relates to the technical field of nuclear power, in particular to a valve dismounting device. The clamp comprises a plurality of clamping jaws, each clamping jaw is provided with a matching surface matched with a conical surface of an upper valve body, every two adjacent clamping jaws are detachably connected, the valve comprises the upper valve body and a lower valve body, and the upper valve body is provided with a conical surface; the lifting component is matched with the clamping jaws and used for lifting the clamping jaws after the upper valve body is clamped by the multiple clamping jaws. According to the utility model, the matching surface of each clamping jaw is matched with the conical surface of the upper valve body, and then the adjacent clamping jaws are fixed together, so that the upper valve body is clamped by the plurality of clamping jaws, and under the action of the lifting component, the clamping jaws are lifted to drive the upper valve body to be lifted, so that the upper