REXROTH力士樂先導(dǎo)式電磁閥：
原理：通電時，力士樂電磁閥電磁力把先導(dǎo)孔打開，上腔室壓力迅速下降，在關(guān) 閉件周圍形成上低下高的壓差，流體壓力推動關(guān)閉件向上移動，閥門打開；斷電時，REXROTH電磁閥彈簧力把先導(dǎo)孔關(guān)閉，入口壓力通過旁通孔迅速腔室在關(guān)閥件周圍形成下低上高的壓差，流體壓力推動關(guān)閉件向下移動，關(guān)閉閥門。
特點：力士樂先導(dǎo)式電磁閥流體壓力范圍上限較高，可任意安裝（需定制）但必須滿足流體壓差條件。 力士樂電磁閥是用電磁控制的工業(yè)設(shè)備，是用來控制流體的自動化基礎(chǔ)元件，屬于執(zhí)行器，并不限于液壓、氣動。 德國REXROTH力士樂電磁閥用在工業(yè)控制系統(tǒng)中調(diào)整介質(zhì)的方向、流量、速度和其他的參數(shù)。力士樂電磁閥可以配合不同的電路來實現(xiàn)預(yù)期的控制，而控制的精度和靈活性都能夠保證。 REXROTH電磁閥由閥體、閥罩、電磁組件、彈簧及密封結(jié)構(gòu)等部件組成，動鐵芯底部的密封塊借助彈簧的壓力將閥體進(jìn)氣口關(guān)閉。通電后，電磁鐵吸合，動鐵芯上部帶彈簧的密封塊把排氣口關(guān)閉，氣流從進(jìn)氣口進(jìn)入膜頭 上海維特銳在德國與REXROTH合作，可長期穩(wěn)定供應(yīng)力士樂電磁閥，REXROTH導(dǎo)軌，力士樂柱塞泵等產(chǎn)品
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