4WE6Y62/EG24N9K4電磁閥

4WE6Y62/EG24N9K4電磁閥 德國博世力士樂REXROTH電磁閥 電磁換向閥

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4WE6Y62/EG24N9K4電磁閥

結(jié)構(gòu)和工作原理

WE型電磁換向閥采用濕式交流或直流電磁鐵。該閥是通過電磁鐵控制閥芯的不同工作位置。當(dāng)電磁鐵斷電時(shí)，閥芯靠彈簧壓力保持在中間或終端位置(脈沖式閥除外)。電磁鐵通電，閥芯被推到工作位置上，斷電后又恢復(fù)到初始狀態(tài)。這時(shí)用手推動(dòng)故障檢查按鈕可使閥芯移動(dòng)。

由于濕式電磁鐵內(nèi)部與回油腔相通，這樣銜鐵油里移動(dòng)，可以減少磨損、緩沖，并且提高了散熱性能，提高了使用壽命。交流電磁鐵具有動(dòng)作時(shí)間短，電氣控制線路簡(jiǎn)單，不需特殊的觸頭保護(hù)等特點(diǎn)。直流電磁鐵是切換特性軟，動(dòng)作頻率高，對(duì)過載或低電壓反應(yīng)不敏感，工作可靠。

WE型換向閥是由電磁鐵控制的滑閥式換向閥，它主要用于控制液體的通斷和流動(dòng)方向。

其結(jié)構(gòu)主要是由閥體、電磁鐵、滑閥以及復(fù)位彈簧等組成。在不通電的情況下被復(fù)位彈簧保持在中間位置或初始位置上(脈沖閥除外)。電磁鐵的推力通過推桿作用在滑閥上，并且把它從靜止位置推到工作位置上(終端位置)，由此改變了液流的方向P→A和B→T或者P→B和A→T。當(dāng)電磁鐵斷電后，滑閥被復(fù)位彈簧重新推到原來的靜止位置上。在電磁鐵斷電時(shí)，用故障檢查按鈕推動(dòng)滑閥移動(dòng)。

液壓閥是用來控制液壓系統(tǒng)中油液的壓力、流量和液體流動(dòng)方向。

二、液壓閥的分類

按功能分:

方向控制閥(單向閥、換向閥)

壓力控制閥(溢流閥、減壓閥、順序閥、壓力繼電器)

流量控制閥(節(jié)流閥、調(diào)速閥)

按操縱方式分:

手動(dòng)和腳踏、機(jī)動(dòng)、電動(dòng)、液動(dòng)、電液動(dòng)等。

共同點(diǎn)

(1) 在結(jié)構(gòu)上，所有的閥都有閥體、閥芯(轉(zhuǎn)閥或滑閥)和驅(qū)使閥芯動(dòng)作的部件(如彈簧、電磁鐵)組成。

(2)在工作原理上，所有閥的開口大小，閥進(jìn)、出口壓差以及流過閥的流量之間的關(guān)系都符合孔口流量公式，僅是各種閥控制的參數(shù)各不相同而已。

液壓電磁閥型號(hào)

rexroth力士樂博世bosch電磁閥 力士樂rexroth電磁換向閥 博世力士樂rexroth比例閥 力士樂rexroth換向閥 力士樂方向閥 博世力士樂截止閥 博世力士樂電磁閥 力士樂rexroth流量閥 博世力士樂液壓閥

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氣體減壓閥常見的故障和維修方法

1、介質(zhì)無法通過或通過量非常小，此種情形一般都為通道堵塞，清除通道污物即可。

2、直通：a、活塞卡住。方法：清除缸套和活塞間污物；b、主、導(dǎo)閥閥桿在導(dǎo)向孔內(nèi)卡住，方法：將主、導(dǎo)閥閥桿用紗紙磨小外徑；c、主、導(dǎo)閥密封面有污物卡住。方法：清除污物。d、膜片損壞，方法：更變新膜片。

3、壓力無法調(diào)節(jié)：a、缸套與活塞間隙過大，方法：更換缸套或活塞；b、調(diào)節(jié)彈簧勞損或調(diào)節(jié)范圍超過彈簧上下限值，方法：更變新的或合適的彈簧。

4、閥后壓力不穩(wěn)：a、入口壓力波動(dòng)范圍過大。方法：盡量保持入口壓力在較小范圍波動(dòng)。b、要求流量和實(shí)際流量相差過大。方法：重新計(jì)算流量，選用適合的口徑。