武穴黎翔机电设备有限公司,询价联系人:何女士
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0811402141 DBETBEX-1X/315G24K31F1M
D634-371C R24K02MONSS2
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,
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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,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。
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DG4V-5-6CJ-M-U-H6-20
威格士现货 关键词:威格士电磁阀 VICKER电磁阀 威格士 VICKERS
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45V60A-1C-22R
(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在阀上部,充液阀处于开启状态。当转入工作行程时,先在充液阀的控制口通入压力油,阀芯下行,充液阀关闭。由于阀芯上部面积略大于其下部面积,故随着液压缸油压的升高,充液阀越关越紧。当活塞回程时,液压缸先行卸压,且充液阀的控制口与油箱相通,充液阀可自动开启,使液压缸中的油液大量排回充液油箱。
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