Distance-adjustable valve opening device

The embodiment of the invention relates to a distance-adjustable valve opening device. The valve opening device comprises a main rod; the clamping part comprises a first clamping jaw and a second clamping jaw, the first clamping jaw is arranged at one end of the main rod, the second clamping jaw is slidably arranged on the main rod in the length direction of the main rod, and the extending direction of the first clamping jaw is parallel to the extending direction of the second clamping jaw; the limiting part comprises a first clamping body, a second clamping body and a fixing part, the first clamping body and the second clamping body are arranged on the second clamping jaw and located on the two sides of the main rod respectively, and the fixing part is arranged on the side, away from the extending end of the second clamping jaw, of the fixing part and used for driving the first clamping body and the second clamping body to clamp the main rod. By means of the valve opening device, valves which are remote in p