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WE10...31/.型電磁換向閥：通徑10壓力31.5MPa流量至120L/min

一電磁鐵操縱的換向滑閥

一濕式直流或交流電磁鐵

一線圈可旋轉(zhuǎn)90°

一可不放泄油液更換線圈

一集中或單個(gè)電器連接選擇

一可選的手動(dòng)操作

該閥主要由閥體(1)、一個(gè)或兩個(gè)電磁鐵(2)、閥芯(3)及-個(gè)或兩個(gè)復(fù)位彈簧(4)組成。

當(dāng)電磁鐵未通電時(shí)，閥芯(3)被復(fù)位彈簧(4)保持在中位或起始位置(脈沖式閥除外)。閥芯(3)的動(dòng)作由濕式電磁鐵(2)實(shí)現(xiàn)。當(dāng)電磁鐵(2)通電時(shí)。電磁鐵的力經(jīng)推桿(5)作用在閥芯(3)上。將其由靜止位置推到所需的工作位置。

使液流由P到A和B到T或由P到B和A到T通。

當(dāng)電磁鐵斷電肘，閥芯(3)被復(fù)位彈簧(4)推回到原始位置，此時(shí)可以推動(dòng)手動(dòng)按鈕(6)使閥芯運(yùn)動(dòng)。

 ■電磁鐵

封閉的濕式電磁鐵有較長的使用壽命，因?yàn)殂曡F在油里移動(dòng)，減少了沖擊和磨損，并且提高了散熱性能。

直流電磁鐵有以下特性:

一切換特性軟，動(dòng)作頻率高。

一銜鐵滯留在電磁鐵的某個(gè)位置時(shí)，對(duì)線圈沒有危險(xiǎn)。

一對(duì)低電壓、短時(shí)超電壓、過載或者機(jī)械的卡緊反應(yīng)不敏感。

交流電磁鐵有以下特性:

一電氣控制線路簡(jiǎn)單。

一動(dòng)作時(shí)間短。

一對(duì)開關(guān)觸頭不需特殊的保護(hù)裝置。

一通過整流器可以使用交流電源。

     工作極限(在電磁鐵發(fā)熱和欠電壓10%且回油箱無負(fù)載的情況下測(cè)得的)由于阻塞的原因，閥的切換性能取決于過濾。為了獲得圖示的最大流量值，推薦采用25 u m的全流量過濾。閥內(nèi)部作用力也影響流量特性，因此，對(duì)于四通閥，圖示流量數(shù)據(jù)適用于按有兩個(gè)流動(dòng)方向的正常使用(如由P- A,同時(shí)由B- -T)。 如果只需要一個(gè)流動(dòng)方向，例如將四通閥的A口或B口堵死而作三通閥用時(shí)，在嚴(yán)重的情況下，最大流量可能很小。

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