4WE6E70/HG24N9K4 24VDC电磁换向阀

4WE6E70/HG24N9K4 24VDC电磁换向阀 德国博世力士乐REXROTH电磁阀 电磁换向阀

库存现货力士乐液压元件: 柱塞泵A10VSO、电磁阀4WE、电磁阀3WE、溢流阀DBW、DBDS、DB、3DR、节流阀Z2S、Z2F、叶片泵PV7、PVV、齿轮泵PH2,PH4,PGF、HM20/HM17压力传感器、压力继电器HED、博世放大器、放大板 、阀0811、0820 、齿轮泵0510、减压阀DR、ZDR、4WREE,马达伺服驱动 电机等系列产品

4WE6E70/HG24N9K4 24VDC电磁换向阀

电磁换向阀

工作原理:

利用电磁铁的通电吸合与断电释放而直接推动阀芯来控制液流方向的。

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。

WE型换向阀是由电磁铁控制的滑阀式换向阀，它主要用于控制液体的通断和流动方向。

其结构主要是由阀体、电磁铁、滑阀以及复位弹簧等组成。在不通电的情况下被复位弹簧保持在中间位置或初始位置上(脉冲阀除外)。电磁铁的推力通过推杆作用在滑阀上，并且把它从静止位置推到工作位置上(终端位置)，由此改变了液流的方向P→A和B→T或者P→B和A→T。当电磁铁断电后，滑阀被复位弹簧重新推到原来的静止位置上。在电磁铁断电时，用故障检查按钮推动滑阀移动。

4WE6E70/HG24N9K4 24VDC电磁换向阀

WE 型换向阀是电磁驱动换向阀，可用作电动液压元件。它们控制流的开始、停止和方向。

方向阀基本上由外壳 (1)、一个或两个电子螺线管 (2)、控制阀芯 (3) 和复位弹簧 (4) 组成。

在断电状态下，控制阀芯 (3) 被复位弹簧 (4) 保持在中间位置或初始位置（“O”型除外）。

如果湿销电子螺线管 (2) 通电，则控制阀芯 (3) 从其静止位置移至所需的终端位置。通过这种方式，根据所选符号释放所需的流动方向。

电子螺线管 (2) 关闭后，控制阀芯 (3) 被推回其中心位置或初始位置（带“OF”棘爪的阀门和不带“O”型弹簧的阀门除外）。

手动超控 (5) 允许在电磁阀不通电的情况下手动切换阀门。

为了正常运行，液压系统必须正确放气。

无弹簧复位“O”（仅适??用于符号 A、C 和 D）

此版本是一个方向阀，带有两个阀芯位置和两个不带棘爪的电子螺线管。控制阀芯 (3) 上没有弹簧复位的阀门在断电状态下没有定义的基本位置。

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力士乐REXROTH定向滑阀，直接操作，顺利切换，电磁驱动WE 6...73...A12

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减压阀是通过调节，将进口压力减至某一需要的出口压力，并依靠介质本身的能量，使出口压力自动保持稳定的阀门。从流体力学的观点看，减压阀是一个局部阻力可以变化的节流元件，即通过改变节流面积，使流速及流体的动能改变，造成不同的压力损失，从而达到减压的目的。然后依靠控制与调节系统的调节，使阀后压力的波动与弹簧力相平衡，使阀后压力在一定的误差范围内保持恒定。