介绍了连杆蝶阀四连杆结构运动的新特性,通过对阀板运动轨迹的研究,指出了阀板运动过程中的两个特殊位置及其特点,并指出了它对蝶阀性能的重要影响。 This paper introduces the new characteristics of the movement of the connecting rod butterfly valve four - bar structure. By studying the movement path of the valve plate, the two special positions and their characteristics during the movement of the valve plate are pointed out, and its important influence on the performance of the butterfly valve is pointed out.