G761-3025现货伺服阀G761-3003B武穴黎翔机电设备有限公司，询价联系人：何女士

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 D691-074Dmoog穆格伺服阀G761-003

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moog穆格伺服阀G761-3018B第二章 充液阀的基本知识

2.1 充液阀概述

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G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001G761-3003伺服阀四芯插头CA120001-2

G122-202A001.G122-829-001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。D633-308B D633-313B D633-317B D633-304B D634-501A G761-3005 G761-3004 G761-3003 G761-3002 

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D633-416B D633-417B D633-418B D633-419B D633-420B D633-423B D633-424B D633-427B D633-431B 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，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。