Pressure Reducing Valve
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图 1 | g00468195 |
减压阀 (A) 出口 (B) 泵压力口 (C) 排流口 (1) 调整螺钉 (2) 弹簧 (3) 先导阀 (4) 弹簧 (5) 弹簧 (6) 油道 (7) 油道 (8) 套筒 (9) 节流孔 |
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图 2 | g00468196 |
减压阀的位置 (10) 减压阀 |
减压阀 (10) 安装在位于操作室内地板下方的动臂和吊钩控制阀上。 阀 (10) 将泵压力降低到用于先导控制系统的
泵压力进入端口 (B)。 油通过套筒 (8) 中的横向钻孔,在出口端口 (A) 处可感觉到压力。 该油还通过节流孔 (9) 加注弹簧室 (5)。 在此状态下,端口 (A) 和油室 (5) 中的压力相等。
当来自端口 (B) 的压力开始增加时,阀 (10) 内的压力也增加。 当压力升高到高于设定点
端口 (A) 中的压力下降到
减压阀 (10) 还具有减压功能。 如果端口 (A) 压力突然增加,则阀 (3) 将强制打开,套筒 (8) 向上移动。 套筒 (8) 向上移动直到端口 (B) 完全关闭。 此位置时,油道 (7) 打卡连通油道 (6)。 允许阀 (10) 内的油流过油道 (7) 和 (6)。 此油通过排放端口 (C) 流出。
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