换向阀主要由阀体、密封组件、凸轮、阀杆、手柄和阀盖等零部件组成(图1)。阀门由手柄驱动,通过手柄带动阀杆与凸轮旋转,凸轮具有定位驱动与锁定密封组件的开启与关闭功能。手柄逆时针旋转,两组密封组件分别在凸轮的作用下关闭下端的两个通道,上端的两个通道分别与管道装置的进口相通。反之,上端的两个通道关闭,下端两个通道与管道装置的进口相通,实现了不停车换向。R978899467 4WEH16D7X/6EG24N9K4
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