4WE10G5X/EW230N9K4/M电磁换向阀

类型:

交流(D,36V或220V或380V)

直流(E,24V或100V )

干式、湿式

交流电磁铁:使用电压为交流110、220、380V。特点是启动力大，不需要专门的电源，吸合、释放快，动作时间约为0.01 ~0.03s。缺点是电源电压下降15%以上，电磁铁吸力明显减小，若衔铁不动作，干式电磁铁会在10~15min (湿式1~1.5h) 后烧坏线圈，且冲击及噪声大，寿命低，允许切换频率为10次1分。

直流电磁铁:使用电压为直流110和24V,工作可靠，吸合释放时间约为0.05~ 0.08s,切换频率般为120次/分，冲击小、体积小、寿命长，但需要专门的直流电源，成本高。

交流本整型电磁铁:电磁铁是直流的，电磁铁本身带整流器，通入交流电经整流后再供给直流电磁铁。

干式电磁铁:电磁铁线圈、铁芯与轭铁处于空气中而不和油液接触。电磁铁与阀连接时，在推杆处设置密封圈，避免了油液进入电磁铁，而且装拆方便。为了防止回油进入干式电磁铁中，要求换向阀的回油压力不能太高。

湿式电磁铁:湿式电磁铁的推杆与阀芯连成一体,取消了推杆处的动密封，所以摩擦力小，复位性能好，冷却润滑好，工作寿命长。

电磁阀（Electromagnetic valve）是用电磁控制的工业设备，是用来控制流体的自动化基础元件，属于执行器，并不限于液压、气动。用在工业控制系统中调整介质的方向、流量、速度和其他的参数。电磁阀可以配合不同的电路来实现预期的控制，而控制的精度和灵活性都能够保证。电磁阀有很多种，不同的电磁阀在控制系统的不同位置发挥作用，常用的是单向阀、安全阀、方向控制阀、速度调节阀等。

电磁阀里有密闭的腔，在不同位置开有通孔，每个孔连接不同的油管，腔中间是活塞，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开启或关闭不同的排油孔，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缸的活塞，活塞又带动活塞杆，活塞杆带动机械装置。这样通过控制电磁铁的电流通断就控制了机械运动。

电磁阀型号

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换向阀可分为手动换向阀、电磁换向阀、电液换向阀等。

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。

工作时借着阀外的驱动传动机构转动驱动轴，带动摇拐臂，启动阀板，使工作流体时而从左入口通向阀的下部出口，时而从右入口变换通向下部出口，实现了周期变换流向的目的。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较为常用。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。