(WH)液动换向阀

WH液动换向阀技术参数 Technical paramete

通径(NG)10至32, 压力至28/35MPa ,流量至1100L/min  Diameter (NG) 10 to 32, pressure to 28/35MPa, flow to 1100L/min

(WH)进口液动换向阀 特性 characteristic

液动换向阀是用控制油路的液讯号使主阀芯移动，来实现油路的换向 retz品牌  The hydraulic reversing valve uses the hydraulic signal to control the oil circuit to move the main valve core to realize the reversing of the oil circuit

下面以三位阀为例：Take three-way valve as an example

1、弹簧对中型：主阀芯（2）由两个弹簧（3）保持在中间位置，如外来信号油经X口进入主阀（1）经盖（4）进入左端弹簧腔（5），推动主阀芯换向，右弹簧腔的油从Y口回油箱，撤去信号油，主阀芯在右弹簧力作用下回到中间位置。如信号油从Y 口进入，则主阀芯左移换向左弹簧腔的油从X口回油箱。

Spring to medium size: the main valve element (2) is kept in the middle position by two springs (3). For example, the external signal oil enters the main valve (1) through port X and enters the left spring chamber (5) through the cover (4), pushing the main valve element to reverse. The oil in the right spring chamber returns to the oil tank from port Y, removing the signal oil, and the main valve element returns to the middle position under the force of the right spring. If the signal oil enters from port Y, the oil in the left spring chamber of the main valve element will be shifted to the left and returned to the oil tank from port X.

WH25型弹簧对中的液动换向阀结构图 Structural Diagram of WH25 Spring Centered Hydraulic Directional Valve

2、液压对中型：压力油作用在主阀芯（2）的两个端面上、由一个定位套使主阀芯定位、保持在中间位置上。如主阀芯一端卸阀，则在另一端压力作用下移动工作位置，实现换向。如控制油从X口进入主阀左腔，则主阀芯右移，主阀右腔的油口从Y口排出回油箱：如控制油从Y口进入主阀右腔、则主阀芯左移、主阀左腔的油从X口回到油箱。内泄油从Y口直接回油箱 Hydraulic alignment: the pressure oil acts on the two end faces of the main valve element (2), and a positioning sleeve makes the main valve element positioned and kept in the middle position. If the valve is unloaded at one end of the main valve element, the working position will be moved under the pressure at the other end to realize reversing. If the control oil enters the left chamber of the main valve from port X, the main valve core moves to the right, and the oil port of the right chamber of the main valve discharges to the oil tank from port Y; if the control oil enters the right chamber of the main valve from port Y, the main valve core moves to the left, and the oil in the left chamber of the main valve returns to the oil tank from port X. The internal drain oil returns to the oil tank directly from port Y.

WH32型液压对中的液动换向阀结构图 Structural Diagram of WH32 Hydraulic Centering Hydraulic Directional Valve

图形符号 Graphical symbols