Dismounting device for spring positioning pin of check valve of nuclear power plant

The invention relates to a dismounting device for a spring positioning pin of a check valve of a nuclear power plant. The dismounting device is used for dismounting the spring positioning pin (6) of the check valve when the valve is disassembled. The dismounting device comprises an expanding pin shrinkage hole (1), a guide angle (2), a lifting convex shoulder (3) and a knocking end face (4). The knocking end face (3) and the guide angle (2) are located at the two ends of the expanding pin shrinkage hole (1) correspondingly, and the lifting convex shoulder (3) is arranged on the outer side of the expanding pin shrinkage hole (1). Compared with the prior art, the dismounting device has the beneficial effects of being easy and convenient to operate, low in machining cost, simple in process and the like. 本发明涉及一种核电站逆止阀弹簧定位销拆卸装置，用于在阀门解体时拆卸逆止阀弹簧定位销(6)，所述的拆卸装置包括涨销收缩孔(1)、导向角(2)、提升凸肩(3)和敲击端面(4)，所述的敲击端面(3)和导向角(2)分别处于涨销收缩孔(1)的两端，所述的提升凸肩(3)设于涨销收缩孔(1)的外侧。与现有技术相比，本发明具有操作简单便捷、加工成本低廉、工艺简单等优点。