REXROTH力士樂(lè)電磁閥是用來(lái)控制流體的自動(dòng)化基礎(chǔ)元件，屬于執(zhí)行器，并不限于液壓、氣動(dòng)。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(lè)電磁閥可以配合不同的電路來(lái)實(shí)現(xiàn)預(yù)期的控制，而控制的精度和靈活性都能夠保證。 力士樂(lè)電磁閥： 原理：通電時(shí)，電磁力把先導(dǎo)孔打開(kāi)，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(dòng)關(guān)閉件向上移動(dòng)，閥門打開(kāi)；斷電時(shí)，彈簧力把先導(dǎo)孔關(guān)閉，入口壓力通過(guò)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(dòng)關(guān)閉件向下移動(dòng)，關(guān)閉閥門。
力士樂(lè)電磁閥特點(diǎn)：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(lè)電磁閥閥體全不銹鋼；對(duì)于強(qiáng)腐蝕的介質(zhì)必須選用隔離膜片式。中性介質(zhì)，也宜選用銅合金為閥殼材料的電磁閥，否則，閥殼中常有銹屑脫落，尤其是動(dòng)作不頻繁的場(chǎng)合。氨用閥則不能采用銅材。 力士樂(lè)電磁閥爆炸性環(huán)境：必須選用相應(yīng)防爆等級(jí)產(chǎn)品，露天安裝或粉塵多場(chǎng)合應(yīng)選用防水，防塵品種。 上海維特銳在德國(guó)與REXROTH合作，可長(zhǎng)期穩(wěn)定供應(yīng)力士樂(lè)電磁閥，REXROTH導(dǎo)軌，力士樂(lè)柱塞泵等產(chǎn)品
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