4WE6D电磁阀的使用说明与内部结构

时间：2020-01-05

WE6…61B/型电磁换向阀其主要特征为导磁套螺纹与阀体上螺纹直接旋合，靠电磁铁通电吸合时产生的推力直接驱动换向滑阀作换向运动，控制油液流向开始、停止和换向。湿式直流或可拆卸线圈的交流电磁铁能旋转90度，可不放油更换线圈，以直动式电磁铁操作方向滑阀作为标准类型。

电磁换向阀起先导作用，它可以改变控制液流的方向，从而改变液动换向阀的位置。

由于操纵液动换向阀的液压推力可以很大，所以主阀可以做得很大，允许有较大的流量通过。

这样用较小的电磁铁就能控制较大的液流。

1、电磁阀通电时，不可用手动按钮切换电磁阀；使用手动按钮操作后，应予回复正常位置。
2、电磁阀之线圈不可放错电压，避免电磁阀线圈损坏。
3、复动电磁阀瞬间通电之使用，通电时间较少为0、1秒以上。
4、电压供应要作稳压装置，定格电压以10%以内供给，要避免突波产生。
5、长时间通电使用时，请考虑散热之问题。
6、使用中间闭气型电磁阀时，要特别注意，电磁阀与气缸间是否有泄露现象，因而造成错误动作及移位情形。

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电磁换向阀：利用电磁铁的通、断电而直接推动阀芯来控制油口的连通状态。

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电动换向阀又称电磁换向阀，它是利用电磁铁通电吸合时产生的力来操纵滑阀阀芯移动的。

由于它可以借助于按钮开关，行程开关，限位开关，压力继电器等发出的电信号进行控制，

故操纵方便，自动化程度高，在换向阀中应用较为广泛。但由于受到电磁铁的尺寸和推力的限制，

电磁换向阀允许通过的流量较小，其通径不大于10mm。
电磁阀里有密闭的腔，在的不同位置开有通孔，每个孔都通向不同的油管，腔中间是阀，两面是两块电磁铁，哪面的磁铁线圈通电阀体就会被吸引到哪边，通过控制阀体的移动来档住或漏出不同的排油的孔，而进油孔是常开的，液压油就会进入不同的排油管，然后通过油的压力来推动油刚的活塞，活塞又带动活塞杆，活塞竿带动机械装置动。这样通过控制电磁铁的电流就控制了机械运动。

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电磁阀不能关闭：主阀芯或铁芯的密封件已损坏→更换密封件；流体温度、粘度是否过高→更换对口的电磁阀；有杂质进入电磁阀主阀芯或动铁芯→进行清洗；弹簧寿命已到或变形→更换；节流孔平衡孔堵塞→及时清洗；工作频率太高或寿命已到→改选产品或更新产品。
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