好物分享力士乐R900481624Z2FS6-2-4X/2QV

好物分享力士乐R900481624Z2FS6-2-4X/2QV

好物分享力士乐R900481624Z2FS6-2-4X/2QV

福建佰胜流体控制有限公司竭诚为您服务

我司主要优势的产品：

泽特卡玛ZETKAMA（代理）

ABB：器、变送器、流量计

西门子SIEMENS：气体7MB、流量计7ML

福克斯波罗FOXBORO：阀门器

E+H：分析仪

威格士：泵阀

霍尼韦尔HONEYWELL：切断阀，截止阀、测厚仪、分析仪

盖米GEMU：液位计、流量计

KNF：泵

艾瑞ARI：阀门、执行器

克拉克KRACHTF：泵

派克PARKER：液压泵阀、伺服器

阿斯卡ASCO：阀

马克MAC：阀

汉弗瑞HUMPHREY：比例电磁阀

阿托斯ATOS：液压泵阀

马祖奇MARZOCCHI：齿轮泵及齿轮马达

丹佛斯DANFOSS：泵阀

兰富GRUNDFOS：水泵

油研YUKEN：液压泵阀

柏山KASHIYAMA：樫山真空泵

佐藤SATOVAC：真空真空泵

三相電机SANSO：小型电动机磁力泵

联系人：车先生 13665068853

公司网站：http://www..com

REXROTH比例流量阀的故障分析与排除：

①流量不能调节，节流调节作用失效 其故障产生原因和排除方法除了可参阅调速阀的故障分析与排除方法外，还有以下两点。

a·比例电磁铁未能通电。产生原因有：比例电磁铁插座老化，接触不良；电磁铁引线脱焊；线圈内部断线等。

b．比例放大器故障。

②调好的流量不稳定 比例流量阀流量的调节是通过改变通入其比例电磁铁的电流实现的。当输入电流值不变时，调好的流量应该不变。但实际上调好的流量（输入同一信号值时）在工作过程中常发生某种变化，这是力滞环增加所致。滞环是指当输入同一信号（电流）值时，由于输入的方向不同（正、反两个方向），经过某同一电流信号值时，引起输出流量（或压力）的变化值。

影响力滞环的因素主要是存在径向不平衡力及机械摩擦所致。那么减小径向不平衡力及减小摩擦因数等措施可减少机械摩擦对滞环的影响。滞环减小，调好的流量自然变化较小。具体可采取如下措施。

a.尽量减小衔铁和导磁套的磨损。

b．推杆导杆与衔铁要同心。

c．注意油液清洁，防止污物进入衔铁与导磁套之间的间隙内而卡住衔铁，使衔铁能随输入电流值按比例地均匀移动，不产生突跳现象。突跳现象一旦产生，比例流量阀输出流量也会跟着突跳而使所调流量不稳定。

d．导磁套衔铁磨损后，要注意修复，使二者之间的间隙保持在合适的范围内。这些措施对维持比例流量阀所调流量的稳定性是相当有好处和有效的。

另外，一般比例电磁铁驱动的比例阀滞环为3%～7%，力矩马达驱动的比例阀滞环为1.5%～3%，伺服电机驱动的比例阀为1. 5%左右，亦即采用伺服电机驱动的比例流量阀，流量的改变量相对要小一些。

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力士乐REXROTH叠加式单向阀Z1S 10

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力士乐REXROTH止回阀Z1SRA

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