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武穴黎翔机电设备有限公司，询价联系人：何女士

询价电话：0713-6542758，手机：18934630908    

询价传真：0713-6542758

询价QQ: 736567721,704552157

现货特价型号：R900925687 4WRAE10W1-30-22/G24N9K31/F1V  2台

0811402141 DBETBEX-1X/315G24K31F1M     2台

充液阀是一种特殊的液控单向阀，一个方向止流，另一个方向自由流通，先导动作是由油口供压的控制阀芯用液压实现的，由此而直接打开主阀。这种阀为叠加系统而设计，即在一个基础件上，可以叠加各种各样的其它类别液压阀。其主要作用是从油箱（或充液油箱）向液压缸或者系统补充油液，以免出现吸空现象。带控制的充液阀还能起快速排油的作用。

2.2充液阀的典型结构

充液阀有常闭式和常开式两种典型结构。

(1)常闭式充液阀

常闭式充液阀有不可控式和可控式两种形式，不可控式充液阀，它是由阀芯、导向套、复位弹簧、阀体和连接法兰等主要零件组成。阀芯是蘑菇形的，结构较紧凑，流阻损失小；阀芯重量轻惯性小，动作灵敏。​

对于可控式充液阀。控制油通入控制缸的上腔，控制活塞就可使阀芯开启。控制缸上腔接油箱时，控制活塞在弹簧的作用下复位。控制缸下腔与充液油箱是想通的。这两种结构的充液阀都直接安装在液压缸的端部，安装方便，节省了与工作液压缸连接的管道。浸入式结构，即上部全浸在充液油箱中，结构很紧凑，流阻损失很小。但充液油箱必须安装在液压缸的底部，

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还要解决充液油箱与液压缸缸底之间的密封问题。检修不太方便。管道连接式结构，即通过管道和法兰与充液油箱相连，与浸入式相比，充液油箱的位置布置较灵活，检修也较方便，但结构显得庞大，流阻损失也稍大。

(2)常开式充液阀

常开式充液阀的优点在于充液过程中不需要克服弹簧力，从而减少了吸油阻力。但结构较复杂，制造要求也较高。

常开式充液阀。阀芯在弹簧的作用下停

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