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ZDR6DB2-4X/75YMV 特價減壓閥

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品 牌: 力士樂 
型 號: ZDR6DB2-4X/75YMV  
規 格: ZDR6DB2-4X/75YMV  
單 價: 面議 
起 訂:  
供貨總量:
發貨期限: 自買家付款之日起 3 天內發貨
所在地: 湖北 黃岡市
有效期至: 長期有效
更新日期: 2019-03-08 11:51
瀏覽次數: 6
詢價
公司基本資料信息
 
 
 
【ZDR6DB2-4X/75YMV 特價減壓閥】詳細說明
?優勢減壓閥ZDR10DA1-5X/210YV

武穴黎翔機電設備有限公司,詢價聯系人:何女士

詢價電話:0713-6542758,手機:18934630908????

詢價傳真:0713-6542758

詢價QQ:?736567721,704552157

現貨特價型號:R900925687?4WRAE10W1-30-22/G24N9K31/F1V??2臺

D634-371C?R24K02MONSS2????3臺DG4V-3-6C-M-U-H7-60????10

DG4V-3-2N-M-U-H7-60????15臺DG4V-3-2A-M-U-H7-60????10

  一種是開關控制:要么全開、要么全關,流量要么最大、要么最小,沒有中間狀態,如普通的電磁直通閥、電磁換向閥、電液換向閥。?

  另一種是連續控制:閥口可以根據需要打開任意一個開度,由此控制通過流量的大小,這類閥有手動控制的,如節流閥,也有電控的,如比例閥、伺服閥。?

  所以使用比例閥或伺服閥的目的就是:以電控方式實現對流量的節流控制(當然經過結構上的改動也可實現壓力控制等),既然是節流控制,就必然有能量損失,伺服閥和其它閥不同的是,它的能量損失更大一些,因為它需要一定的流量來維持前置級控制油路的工作。

  伺服閥的主閥一般來說和換向閥一樣是滑閥結構,只不過閥芯的換向不是靠電磁鐵來推動,而是靠前置級閥輸出的液壓力來推動,這一點和電液換向閥比較相似,只不過電液換向閥的前置級閥是電磁換向閥,而伺服閥的前置級閥是動態特性比較好的噴嘴擋板閥或射流管閥。?

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  也就是說,伺服閥的主閥是靠前置級閥的輸出壓力來控制的,而前置級閥的壓力則來自于伺服閥的入口p,假如p口的壓力不足,前置級閥就不能輸出足夠的壓力來推動主閥芯動作。?

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  而我們知道,當負載為零的時候,如果四通滑閥完全打開,p口壓力=t口壓力+閥口壓力損失(忽略油路上的其它壓力損失),如果閥口壓力損失很小,t口壓力又為零,那么p口的壓力就不足以供給前置級閥來推動主閥芯,整個伺服閥就失效了。所以伺服閥的閥口做得偏小,即使在閥口全開的

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