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原文
Structural characteristics of butterfly valve rod Butterfly valve rod structure shown in Figure 1, it is mainly driven by the device, the valve plate, valve body, spindle, bar system and other component parts. Open and close the valve spindle is driven by the drive unit drive bar system body movement, in order to achieve open and close the valve plate. It can be seen in Figure 1, regardless of the valve in the open or closed when the valve plate and even the moving parts is always surrounded by the media. When the valve is closed, the valve plate to bear all the media pressure, this will cause plastic deformation of the valve plate, and then even moving parts to cause deformation; when the valve is open, the valve plate will be scouring the media, and media flow caused by the vibration of the valve plate itself, this will also speed up the linked components of the damage, in particular, articulated at the solid self-lubricating bearings for damage. Therefore, the connecting rod butterfly valve plate valve rod life is life.
原文来自：http://www.diefa.org

是由上海埃非凯阀门有限公司提供的阀门新闻，中文译文仅供参考，以下提供站内导航搜索：

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译文：
　　连杆蝶阀的结构，它主要由驱动装置、阀板、阀体、主轴、杆系等零部件组成。阀门的启闭是靠驱动装置驱动主轴带动杆系机构运动，从而实现阀板的打开和关闭。通过图1可以看出，无论阀门在开启还是关闭的时候，阀板及其连动部件始终是在介质的包围之中。当阀门关闭时，阀板要承受介质的所有压力，这样就会引起阀板的塑性变形，进而使其连动件引起变形；当阀门开启时，阀板又会受到介质的冲刷，以及介质流动所引起的阀板本身的振动，这样同样会加快连动部件的损坏，尤其是铰接处固体自润滑轴承的损坏。因此，连杆蝶阀阀板的寿命也就是连杆蝶阀的寿命。

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