力士乐手动换向阀4WMD 10 C3X/F 手动换向阀又称克里斯阀，阀门的一种，具有多向可调的通道，可适时改变流体流向。这种变换阀在石油、化工生产中有着广泛的应用，在合成氨造气系统中最为常用。此外，换向阀还可作成阀瓣式的结构，多用于较小流量的场合。工作时只需转动手轮通过阀瓣来变换工作流体的流向
优点 动作准确、自动化程度高、工作稳定可靠，但需附设驱动和冷却系统，结构较为复杂；阀瓣式结构则较简单，多用于流量较小的生产工艺上。 在石油、化工、矿山和冶金等行业中，六通换向阀是一种重要的流体换向设备。该阀安装在稀油润滑系统输送润滑油的管道中。通过变换密封组件在阀体中的相对位置，使阀体各通道连通或断开，从而控制流体的换向和启停。 工作原理和结构特点
六通换向阀主要由阀体、密封组件、凸轮、阀杆、手柄和阀盖等零部件组成。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。
(1)六通阀的阀体由隔板分成两腔，每腔都有3个通道，中间为进油口，两端为出油口。阀体为碳钢板焊结构，体积小，质量轻，结构紧凑，提高了材料的利用率，缩短了生产周期，降低了成本。密封面堆焊不锈钢，防锈耐腐蚀，密封面经过精加工后抛光研磨，表面粗糙度Ra≤0.8μm。
(2)六通阀有两组密封组件。每组密封组件由阀瓣、密封圈、调整块、调节螺钉、夹板和螺栓组成。阀瓣为碳钢板焊件，设有加强筋，即增加阀瓣强度又起导向作用，保证每组阀瓣间的同轴度。阀瓣上镶嵌聚氨脂橡胶圈，该材料具有耐油、耐磨损、性能稳定、密封良好和使用寿命长的特点。在凸轮的作用下，密封圈的球面与阀体密封面相接触产生挤压弹性变形，达到密封效果。调整块和调节螺钉在两组密封组件不能同步到位时可起调整作用，确保各通道密封性能同步到位。
(3)阀杆与阀体隔板和上阀盖间的轴向密封采用O形圈。
(4)阀体隔板及上阀盖轴孔部位镶有铜套，可减小与O形圈间的摩擦力矩，密封组件开启与关闭灵活，操作力矩小。
(5)上阀盖设有指示牌及限位螺钉，阀杆上安装指针，明确指示各通道的接通状况，易于操作 [2]
公称通径(mm)：50～150；力士乐手动换向阀4WMD 10 C3X/F
适用温度(℃)：室温～80；
公称压力(MPa)：1.0；
适用介质：润滑油；
连接形式：法兰；
强度试验压力(MPa)：1.5；
密封试验压力(MPa)：1.1；
耐压试验温度(℃)：常温 [3] 。
常见故障原因和处理措施编辑
1. 外泄漏
外泄漏是手动换向阀较为常见的故障， 其主要原因：
（1）联结螺钉松动。联结时螺钉拧的不够紧，或者机器工作时的振动，都可能导致联结螺钉松动。这时，只要用合适的工具拧紧就可以了。
（2）漏装密封圈或者密封圈失效。密封圈失效有几种表现：
①外表破裂；
②局部变的扁平；
③腐蚀损坏；
④弹性变差。
排除方法就是更换新的密封圈。
（3）油压过高。油压过高也可能导致外泄漏。这时，可以从压力表上读出压力，判别压力是否过高，如果这个压力比系统压力高，说明压力过高。排除方法：通过压力阀调定系统压力。
（4）安装面粗糙。安装面粗糙度不符合要求可能导致外泄漏。排除方法：磨削安装面，使其粗糙度符合产品要求，通常阀的安装面的粗糙度值不大于0.8μm。
针对以上四种原因，检查的先后顺序是：先看压力表，再检查端盖是否松动，最后打开阀，检查密封圈，测量安装面粗糙度。这个顺序体现了由易到难、由外到内的原则。
2.阀芯不能移动
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