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武穴黎翔機電設(shè)備有限公司，詢價聯(lián)系人：何女士

詢價電話：0713-6542758，手機：18934630908????

詢價傳真：0713-6542758

詢價QQ:?736567721,704552157

現(xiàn)貨特價型號：R900925687?4WRAE10W1-30-22/G24N9K31/F1V??2臺

0811402141?DBETBEX-1X/315G24K31F1M?????2臺

充液閥是一種特殊的液控單向閥，一個方向止流，另一個方向自由流通，先導動作是由油口供壓的控制閥芯用液壓實現(xiàn)的，由此而直接打開主閥。這種閥為疊加系統(tǒng)而設(shè)計，即在一個基礎(chǔ)件上，可以疊加各種各樣的其它類別液壓閥。其主要作用是從油箱（或充液油箱）向液壓缸或者系統(tǒng)補充油液，以免出現(xiàn)吸空現(xiàn)象。帶控制的充液閥還能起快速排油的作用。

2.2充液閥的典型結(jié)構(gòu)

充液閥有常閉式和常開式兩種典型結(jié)構(gòu)。

(1)常閉式充液閥

常閉式充液閥有不可控式和可控式兩種形式，不可控式充液閥，它是由閥芯、導向套、復位彈簧、閥體和連接法蘭等主要零件組成。閥芯是蘑菇形的，結(jié)構(gòu)較緊湊，流阻損失??；閥芯重量輕慣性小，動作靈敏。?

對于可控式充液閥。控制油通入控制缸的上腔，控制活塞就可使閥芯開啟?？刂聘咨锨唤佑拖鋾r，控制活塞在彈簧的作用下復位。控制缸下腔與充液油箱是想通的。這兩種結(jié)構(gòu)的充液閥都直接安裝在液壓缸的端部，安裝方便，節(jié)省了與工作液壓缸連接的管道。浸入式結(jié)構(gòu)，即上部全浸在充液油箱中，結(jié)構(gòu)很緊湊，流阻損失很小。但充液油箱必須安裝在液壓缸的底部，

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還要解決充液油箱與液壓缸缸底之間的密封問題。檢修不太方便。管道連接式結(jié)構(gòu)，即通過管道和法蘭與充液油箱相連，與浸入式相比，充液油箱的位置布置較靈活，檢修也較方便，但結(jié)構(gòu)顯得龐大，流阻損失也稍大。

(2)常開式充液閥

常開式充液閥的優(yōu)點在于充液過程中不需要克服彈簧力，從而減少了吸油阻力。但結(jié)構(gòu)較復雜，制造要求也較高。

常開式充液閥。閥芯在彈簧的作用下停

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