Connecting structure of push rod and valve rod

The utility model provides a connecting structure of a push rod and a valve rod, which comprises the push rod and a connecting seat, a mounting hole for the push rod and the valve rod to extend into is arranged in the connecting seat, and the mounting hole comprises a first hole section, a second hole section and a third hole section which are sequentially arranged along the same axis. The diameter of the first hole section is the same as that of the third hole section, the diameter of the second hole section is larger than that of the first hole section, a connector used for being in clearance fit with the first hole section and the second hole section is arranged on the push rod, and the third hole section is used for being detachably connected with a valve rod of a valve. According to the scheme, the coaxiality between the push rod and the valve rod can be effectively improved. 本实用新型提供一种推杆与阀杆的连接结构，包括：推杆和连接座，所述连接座内设置有用于推杆和阀杆伸入的安装孔，所述安装孔包括沿着同一轴线依次设置的第一孔段、第二孔段和第三孔段，所述第一孔段的直径与所述第三孔段的直径相同，所述第二孔段的直径大于所述第一孔段的直径，所