力士樂分步直動式電磁閥：

    原理：REXROTH電磁閥是一種直動和先導(dǎo)式相結(jié)合的原理,，當(dāng)入口與出口沒有壓差時，通電后,，電磁力直接把先導(dǎo)小閥和主閥關(guān)閉件依次向上提起,，閥門打開。當(dāng)入口與出口達(dá)到啟動壓差時,，通電后,，力士樂電磁閥電磁力先導(dǎo)小閥，主閥下腔壓力上升,，上腔壓力下降,，從而利用壓差把主閥向上推開；斷電時,，先導(dǎo)閥利用彈簧力或介質(zhì)壓力推動關(guān)閉件,，向下移動,，使閥門關(guān)閉。

    特點(diǎn)：REXROTH力士樂電磁閥在零壓差或真空,、高壓時亦能可*動作,，但功率較大，要求必須水平安裝,。

    REXROTH電磁閥液壓裝置中容易產(chǎn)生噪聲的元件一般認(rèn)為是泵和閥,，閥中又以溢流閥和電磁換向閥等為主。產(chǎn)生噪聲的因素很多,。

    力士樂REXROTH電磁閥的噪聲有流速聲和機(jī)械聲二種,。流速聲中主要由油液振動、空穴以及液壓沖擊等原因產(chǎn)生的噪聲,。機(jī)械聲中主要由閥中零件的撞擊和磨擦等原因產(chǎn)生的噪聲,。

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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