4WRAE6W15-2X/G24N9K31/A1V比例方向阀 德国进口博世力士乐REXROTH比例阀 比例方向阀

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

4WRAE6W15-2X/G24N9K31/A1V比例方向阀

液压阀的分类:

1根据结构形式分类

滑阀：滑阀为间隙密封，阀芯与阀口存在一定的密封长度，因此滑阀运动存在一个死区。

锥阀：锥阀阀芯半锥角一 般为12°-20°，阀口关闭时为线密封，密封性能好且动作灵敏。

球阀：性能与锥阀相同

2.根据控制制方式不同分:

定值或开关控制阀:被控制量为定值的阀类，包括普通控制阀、插装阀、叠加阀。

比例控制阀:被控制量与输入信号成比例连续变化的阀类，包括普通比例阀和带内反馈的电液比例阀。

伺服控制阀:被控制量与(输出与输入之间的)偏差信号成比例连续变化的阀类，包括机液伺服阀和电液伺服阀。.

数字控制阀:用数字信息直接控制阀口的启闭，来控制液流的压力、流

量、方向的阀类。

比例阀对流量的控制可以分为两种：

一种是开关控制：要么全开、要么全关，流量要么大、要么小，没有中间状态，如普通的电磁直通阀、电磁换向阀、电液换向阀。

另一种是连续控制：阀口可以根据需要打开任意一个开度，由此控制通过流量的大小，这类阀有手动控制的，如节流阀，也有电控的，如比例阀、伺服阀。

4WRAE 4/2 和 4/3 比例方向阀设计为板式设计的直接操作装置。通过带中心螺纹和可拆卸线圈的比例电磁铁进行操作。螺线管通过集成电子设备进行控制。

4WRAE6W15-2X/G24N9K31/A1V比例方向阀型号

力士乐REXROTH二位四通和三位四通比例方向阀直控式，阀芯不带位移电反馈，带集成式放大版（OBE）4WRAE

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力士乐REXROTH比例方向阀，直控式4WRA ...XE

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力士乐REXROTH二位四通和三位四通比例方向阀直控式，阀芯带位移电反馈，不带集成式放大版（OBE）4WRE

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力士乐REXROTH二位四通和三位四通比例方向阀直控式，阀芯带位移电反馈，带集成式放大版（OBE）4WREE

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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。