(高溫電磁閥)電磁鐵通電后,連桿被提升,隨著轉(zhuǎn)軸開始轉(zhuǎn)動(dòng),這運(yùn)動(dòng)作用于導(dǎo)閥而開主閥;斷電后,在銜鐵自重及返回彈簧作用下,半上導(dǎo)閥,導(dǎo)閥關(guān)閉后,靠壓差關(guān)閉主閥。常閉:當(dāng)線圈通電時(shí),先導(dǎo)閥芯吸合,先導(dǎo)孔打開,閥上卸壓,活塞靠下腔介質(zhì)壓力推動(dòng),電磁閥打開;當(dāng)線圈斷電時(shí),先導(dǎo)閥芯靠彈簧復(fù)位,先導(dǎo)孔關(guān)閉,閥上腔由活塞節(jié)流孔增壓和復(fù)位彈簧的推力,閥關(guān)閉。常開:當(dāng)線圈通電時(shí),先導(dǎo)孔關(guān)閉,閥上腔由活塞節(jié)流孔增壓和復(fù)位彈簧的推力,電磁閥關(guān)閉。當(dāng)線圈斷電時(shí),先導(dǎo)閥芯靠彈簧復(fù)位,先導(dǎo)孔打開,閥上腔卸壓,活塞靠下腔介質(zhì)壓力推動(dòng),電磁閥打開.