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| 电动机功率 | 11kW | 外形尺寸 | 14mm |
|---|---|---|---|
| 应用领域 | 化工,农林牧渔,能源,建材/家具,电子/电池 | 重量 | 14kg |
产品简介
详细介绍
单向阀又称止回阀或逆止阀。用于液压系统中防止油流反向流动,或者用于气动系统中防止压缩空气逆向流动。
单向阀有直通式和直角式两种。直通式单向阀用螺纹连接安装在管路上。直角式单向阀有螺纹连接、板式连接和法兰连接三种形式。液控单向阀也称闭锁阀或保压阀，它与单向阀相同，用以防止油液反向流动。但在液压回路中需要油流反向流动时又可利用控制油压，打开单向阀，使油流在两个方向都可流动。液控单向阀采用锥形阀芯，因此密封性能好。在要求封闭油路时，可用此阀作为油路的单向锁紧而起保压作用。液控单向阀控制油的泄漏方式有内泄式和外泄式二种。在油流反向出口无背压的油路中可用内泄式；否则需用外泄式，以降低控制油压力。
注意事项。
(1)必须保证液控单向阀有足够的控制压力，绝对不允许控制压力失压。应注意控制压力是否满足反向开启的要求。如果液控单向阀的控制引自主系统时，则要分析主系统压力的变化对控制油路压力的影响，以免出现液控单向阀的误动作。
(2)根据液控单向阀在液压系统中的位置或反向出油腔后的液流阻力（背压）大小，合理选择液控单向阀的结构（简式或复式）及泄油方式（内泄或外泄）。对于内泄式液控单向阀来说，当反向油出口压力超过一定值时，液控部分将失去控制作用，故内泄式液控单向阀一般用于反向出油腔无背压或背压较小的场合；而外泄式液控单向阀可用于反向出油腔背压较高的场合，以降低最小的控制压力，节省控制功率。系统若采用内卸式，则柱塞缸将断续下降发出振动和噪声。
节流口堵塞原因：
1、油液中的机械杂质或因氧化析出的胶质、沥青、碳渣等污物堆积在节流缝隙处。
2、由于油液老化或受到挤压后产生带电的极化分子，而节流缝隙的金属表面上存在电位差，故极化分子被吸附到缝隙表面，形成牢固的边界吸附层，吸附层厚度一般为5~8微米，因而影响了节流缝隙的大小。以上堆积、吸附物增长到一定厚度时，会被液流冲刷掉，随后又重新附在阀口上。这样周而复始，就形成了流量的脉动。
3、阀口压差较大时，因阀口温度高，液体受挤压的程度增强，金属表面也更易受摩擦作用而形成电位差，因此压差大时容易产生堵塞现象。
减轻节流口堵塞的措施：
1、选择水力半径大的薄刃节流口。
2、精密过滤并定期更换油液。
3、适当减小节流口前后的压差。
4、采用电位差较小的金属材料、选用抗氧化稳定性好的油液、减小节流口表面粗糙度。
型号提供：
REXROTH R900348007 S10/A0.0/12
力士乐管式单向阀S10A1. R900420531
REXROTH R900420531 S10A1.0/
REXROTH R900497659 S10A1.0/12
力士乐管式单向阀S10A1. R900420531
REXROTH R900490600 S15A0.0/12
REXROTH R900420537 S15A1.0/
REXROTH R900455137 S15A1.0/12
REXROTH R900486216 S15A5.0/12
REXROTH R900343034 S20A0.0/12
REXROTH R900470782 S20A1.0/12
REXROTH R900353560 S20A2.0/12
REXROTH R900470822 S20A3.0/12
REXROTH R900347261 S20A5.0/12
REXROTH R900344017 S25A0.0/12
REXROTH R900420511 S25A1.0/
REXROTH R900455138 S25A1.0/12
REXROTH R900354272 S25A5.0/12
REXROTH R900415457 S30A0.0/12
REXROTH R900420519 S30A1.0/
REXROTH R900492887 S30A1.0/12
REXROTH R900342882 S30A2.0/12
REXROTH R900470823 S30A3.0/12
REXROTH R900488016 S8A1.0/12
REXROTH R900348007 S10A0.0//12
REXROTH R900420531 S10A1.0/
REXROTH R900497659 S10A1.0//12
REXROTH R900424731 S10A1.0//5
REXROTH R900356466 S10A2.0//12
REXROTH R900587740 S10A2.0//5
REXROTH R900497660 S10A3.0//12
REXROTH R900470821 S10A5.0//12
REXROTH R900490600 S15A0.0//12
REXROTH R900420537 S15A1.0/
REXROTH R900455137 S15A1.0//12
REXROTH R900427399 S15A1.0//5
REXROTH R900343481 S15A2.0//12
REXROTH R900438478 S15A2.0//5
REXROTH R900490601 S15A3.0//12
REXROTH R900420522 S15A3.0//5
REXROTH R900486216 S15A5.0//12
REXROTH R900453799 S15A5.0//5
REXROTH R900343034 S20A0.0//12
REXROTH R900435990 S20A0.0//5
REXROTH R900470782 S20A1.0//12
REXROTH R900420526 S20A1.0//5
REXROTH R900353560 S20A2.0//12
REXROTH R900423407 S20A2.0//5
REXROTH R900470822 S20A3.0//12
REXROTH R900429261 S20A3.0//5
REXROTH R900347261 S20A5.0//12
REXROTH R900344017 S25A0.0//12
REXROTH R900445030 S25A0.0//5
REXROTH R900420511 S25A1.0/
REXROTH R900455138 S25A1.0//12
REXROTH R900420512 S25A1.0//5
REXROTH R900347547 S25A2.0//12
REXROTH R900423411 S25A2.0//5
REXROTH R900340147 S25A3.0//12
REXROTH R900354272 S25A5.0//12
REXROTH R900415457 S30A0.0//12
REXROTH R900433632 S30A0.0//5
REXROTH R900420519 S30A1.0/
REXROTH R900492887 S30A1.0//12
REXROTH R900420500 S30A1.0//5
REXROTH R900342882 S30A2.0//12
REXROTH R900420503 S30A2.0//5
REXROTH R900470823 S30A3.0//12
REXROTH R900347681 S30A5.0//12
REXROTH R900422882 S6A1.0//5
REXROTH R900488016 S8A1.0//12
REXROTH R900348007 S10A0.0//12
REXROTH R900420531 S10A1.0/
REXROTH R900497659 S10A1.0//12
REXROTH R900356466 S10A2.0//12
REXROTH R900497660 S10A3.0//12
REXROTH R900470821 S10A5.0//12
REXROTH R900490600 S15A0.0//12
REXROTH R900420537 S15A1.0/
REXROTH R900455137 S15A1.0//12
REXROTH R900343481 S15A2.0//12
REXROTH R900490601 S15A3.0//12
REXROTH R900486216 S15A5.0//12
REXROTH R900343034 S20A0.0//12
REXROTH R900470782 S20A1.0//12
REXROTH R900353560 S20A2.0//12
REXROTH R900470822 S20A3.0//12
REXROTH R900347261 S20A5.0//12
REXROTH R900344017 S25A0.0//12
REXROTH R900420511 S25A1.0/
REXROTH R900455138 S25A1.0//12
REXROTH R900347547 S25A2.0//12
REXROTH R900340147 S25A3.0//12
REXROTH R900354272 S25A5.0//12
REXROTH R900415457 S30A0.0//12
REXROTH R900420519 S30A1.0/
REXROTH R900492887 S30A1.0//12
REXROTH R900342882 S30A2.0//12
REXROTH R900470823 S30A3.0//12
REXROTH R900347681 S30A5.0//12
REXROTH R900488016 S8A1.0//12
力士乐单向阀R900459203 Z2FS16-8-3X/S
力士乐单向阀R900457256 Z2FS16-8-3X/S2
力士乐单向阀R901413310 Z2FS16-8-3X/S2J3
力士乐单向阀R901413311 Z2FS16-8-3X/S2J3V
力士乐单向阀R900473688 Z2FS16-8-3X/S2V
力士乐单向阀R901413313 Z2FS16-8-3X/SJ3
力士乐单向阀R901413315 Z2FS16-8-3X/SJ3V
力士乐单向阀R900470529 Z2FS16-8-3X/SV
力士乐单向阀R900073409 Z2FS16-8-3X/SV=LB
力士乐单向阀R900426851 Z2FS16A8-3X/S
力士乐单向阀R900348227 Z2FS16A8-3X/S2
力士乐单向阀R900591255 Z2FS16A8-3X/S2V
力士乐单向阀R900498950 Z2FS16B8-3X/S
力士乐单向阀R900481621 Z2FS6-2-4X/1Q
力士乐单向阀R900481623 Z2FS6-2-4X/1QV
力士乐单向阀R900481622 Z2FS6-2-4X/2Q
力士乐单向阀R901435983 Z2FS6-2-4X/2QJ3V/60
力士乐单向阀R900481624 Z2FS6-2-4X/2QV
力士乐单向阀R900727967 Z2FS6-2-4X/2QV/60