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4WEH16Y7X/6EG24N9ES2K4/B10D3电液换向阀 德国博世力士乐REXROTH电磁阀 电液换向阀

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4WEH16Y7X/6EG24N9ES2K4/B10D3电液换向阀

WEH型

WEH 型阀是一种电动液压驱动的方向滑阀。它控制流的开始、停止和方向。方向阀基本上由带外壳的主阀 (1)、主控制阀芯 (2)、一个或两个复位弹簧 (3.1) 和 (3.2) 以及带有一个或两个回位弹簧的先导控制阀 (4) 组成。螺线管“a”（5.1）和/或“b”（5.2）。

为了正常运行，液压系统必须正确放气。

对于具有 3 个阀芯位置的阀门，主阀中的主控制阀芯 (2) 通过两个弹簧保持在零位或初始位置，对于具有 2 个阀芯位置的阀门，通过加压和弹簧保持在零位或初始位置。在初始位置，两个弹簧腔 (6) 和 (8) 以减压形式通过先导控制阀 (4) 与油箱连接。通过控制管路 (7)，先导控制阀供应先导油。可以在内部或外部（通过端口 X 外部）实现供电。在致动先导控制阀，例如螺线管“a”时，先导控制阀芯 (10) 向左移动，因此弹簧腔 (8) 被先导压力加压。弹簧室 (6) 保持减压状态。先导压力作用在主控制阀芯 (2) 的左侧并使其逆着弹簧 (3.1) 移动。

在关闭电磁阀时，先导控制阀芯 (10) 返回其初始位置（脉冲阀芯除外）。弹簧室 (8) 被卸载到油箱。先导回油在内部（通过通道 T）或外部（通过通道 Y）实现。可选的手动超控 (9) 允许在电磁阀不通电的情况下移动先导控制阀芯 (10)。

注意：

弹簧腔 (6) 和 (8) 中的复位弹簧 (3.1) 和 (3.2) 将主控制阀芯 (2) 保持在中心位置，即使在阀门垂直定位等情况下也没有先导压力。

由于设计原理，内部泄漏是阀门固有的，可能会随着生命周期的增加而增加。

WH型

WH 型阀是带液压驱动的换向滑阀。它控制流的开始、停止和方向。换向阀基本上由阀壳 (1)、主控制阀芯 (2)、一个或两个回位弹簧 (3.1) 和 (3.2) 组成，这些弹簧回位或弹簧对中的阀门以及导流板 (11) .

主控制阀芯 (2) 由加压直接驱动。主控制阀芯 (2) 通过弹簧或加压保持在零位或初始位置。先导供油和回油是外部的（参见先导供油）。

带弹簧对中控制阀芯的 4/3 换向阀

在此版本中，主控制阀芯 (2) 由两个复位弹簧 (3.1) 和 (3.2) 保持在零位。通过导流板 (11)，弹簧室 (6) 连接到端口 Y，弹簧室 (8) 连接到端口 X。

随着主控制阀芯 (2) 两个前侧之一的先导压力加载，阀芯移动到阀芯位置。在阀门中，所需的端口以这种方式连接。在压力控制阀芯区域压力释放时，另一侧的弹簧将阀芯返回到零位或初始位置。

WEH…H型

带有主控制阀芯压力对中的 4/3 换向阀

主阀中的主控制阀芯 (2) 通过对两个前端面加压而保持在零位。一个定心衬套 (12) 靠在外壳上并固定控制阀芯的位置。通过一个正面的压力释放，主控制阀芯 (2) 移动到阀芯位置。

卸载的控制阀芯面通过先导控制阀将返回的先导油排入通道 Y（外部）。

注意：

在此版本中，弹簧 (3.1) 和 (3.2) 没有复位功能。在减压条件下和水平安装时，它们将主控制阀芯 (2) 保持在中心位置。

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(图1)。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。

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博世bosch rexroth方向阀 电液方向阀

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R900737876 H-4WEH25G6X/6EG24N9K4QMABG24

R900737700 H-4WEH25J6X/6EG24N9EK4/B08

R900733947 H-4WEH25T6X/6EG24TS2K4QM0G24

R900733621 H-4WEH25HD6X/OF6EW110N9ES2K4/B10D3

R900732837 H-4WEH25EB6X/6EG24N9TK4

R900732817 H-4WEH25E6X/6EG24K4QM0G24/B10D3

R900730978 H-4WEH25W6X/6EG24N9ES2K4/B10D3

R900730442 H-4WEH25HD6X/OF6EG220N9ETK4/B10D3

R900729145 H-4WEH25J6X/6EW110N9EK4/B10D3

R900728684 H-4WEH25J6X/6EW230N9ETK4/B10P4,5D3

R900728043 H-4WEH25HD6X/OF6EG24N9ETK4/B10D3

R900727434 H-4WEH25E6X/6EG24N9EK4QMABG24/B10D3V

R900726325 H-4WEH25E6X/6EG24N9EK4/B10D3V

R900724836 H-4WEH25U6X/6EG24N9S2K4

R900723782 H-4WEH25R6X/6EG24N9K4/V

R900723778 H-4WEH25C6X/6EG24N9K4/V

R900723774 H-4WEH25E6X/6EG24N9K4/V

R900723664 H-4WEH25J6X/6EW110N9K4/V

R900720607 H-4WEH25U10B6X/6EG24K4

R900720329 H-4WEH25E6X/6EG24N9SDKL

R900719058 H-4WEH25JA6X/6EG24N9EK4/B10D3

R900719057 H-4WEH25E6X/6EG24N9ES2K4/B10D3

R900718829 H-4WEH25J6X/6EG24N9K4/B10D3

R900716696 H-4WEH25C6X/6EG24N9EK4/B10P4,5D3

R900716694 H-4WEH25E6X/6EG24N9EK4/B10P4,5D3

R900715438 H-4WEH25H6X/6EG24N9S2K4

R900714469 H-4WEH25HD6X/OF6EG24N9ETDL/B10D3

R900710130 H-4WEH25HD6X/OF6EG24N9EK4/B10D3

R900708647 H-4WEH25D6X/6EG24ETK4/B10D3

R900708262 H-4WEH25R6X/6EG24N9K4

R900707168 H-4WEH25D6X/6EW230N9K4

R900706669 H-4WEH25E6X/6EW110N9ETK4/B10D3V

R900706668 H-4WEH25E6X/6EG24N9ETK4/B10D3V

R900705071 H-4WEH25F6X/6EG24N2K4QMABG24

R900704662 H-4WEH25HZ10-6X/6EG24N9K4SO582

R900704442 H-4WEH25E6X/6EG24N9K4/10B08

R900369404 H-4WEH25HZ10-6X/USO581

R900340013 H-4WEH25HG6X/U

R900976193 H-4WEH25E6X/6EG24N9EK4/10B10D3

R900967205 H-4WEH25HD6X/OF6EG24N9ES2K4/B10D3

R900965810 H-4WEH25L6X/6EG24N9EK4/B10D3

R900962597 H-4WEH25J6X/6EG24N9ETS2K4/B08D3

R900962569 H-4WEH25J6X/6EG24N9ES2K4/B10

R900962539 H-4WEH25E6X/6EG24N9ETS2K4/B08D3

R900957843 H-4WEH25L6X/6EG24N9ES2K4/10B10D3

R900956559 H-4WEH25D6X/6EG24N9EK4/B10D3

R900956463 H-4WEH25L6X/6EG24N9EK4/B10

R900956092 H-4WEH25J6X/6EG24N9EK4/B10D3

R900950976 H-4WEH25J6X/6EG110N9ETS2K4

R900949851 H-4WEH25H6X/6EG24N9K4

R900932940 H-4WEH25J6X/6EG24N9ETK4/B10D3

R900930588 H-4WEH25J6X/6EG24N9ETSK4/B10D3

R900929180 H-4WEH25J6X/6EG24N9K4

R900926695 H-4WEH25J6X/6EG24N9ETS2K4/B10D3

R900924558 H-4WEH25D6X/6EG24N9ES2K4/B10D3

R900924322 H-4WEH25C6X/6EG24N9K4

R900914691 H-4WEH25J6X/6EG24N9ETK4

R900769118 H-4WEH25Y6X/6EG24N9ES2K4/B10D3

R900766941 H-4WEH25U6X/6EG110N9ES2K4/B10D3

R900758807 H-4WEH25J6X/6EG24N9ES2K4/B10D3

R900750747 H-4WEH25E6X/6EW110N9SK4/B10D2

R900249565 H-4WEH25HD6X/OF6EW230N9TS2K4

R900249564 H-4WEH25HD6X/OF6EW230N9ES2K4/B10D3

R900249383 H-4WEH25D6X/6EW230N9ETK4/B10D3

R900248746 H-4WEH25E6X/6EW110N9ETSK4/10B10D3V

R900247926 H-4WEH25G6X/6EW230N9K4/B10D3

R900247816 H-4WEH25HD6X/6EG24N9ETS2K4/10B10D3

R900247731 H-4WEH25J6X/6EW230N9S2K4

R900247602 H-4WEH25J6X/6EW230N9ETK4/B10D3V

R900247254 H-4WEH25J6X/6EW230N9ES2K4/B10D3

R900246896 H-4WEH25HD6X/6EG24N9ETK4/B10D3

R900246339 H-4WEH25E80-6X/6EG24N9TK4SO235

R900245519 H-4WEH25C6X/6EG24K4QMBG24

R900244822 H-4WEH25C6X/6EG24N9TK4

R900244130 H-4WEH25FA6X/6EG24N9K4QM0G24

R900243916 H-4WEH25HC6X/6EG24K4

R901016786 H-4WEH25J6X/6EG24N9ETSK4/B10D3V

R901004273 H-4WEH25D6X/6EG24N9ETS2K4/B10D3

R900728043 H-4WEH25HD6X/OF6EG24N9ETK4/B10D3

R900617764 H-4WEH25G6X/6SG24N9TK4

R900246842 H-4WEH25J6X/6EG24N9EK4/10B12SO843

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。