REXROTH電磁閥有什么作用功能如下

REXROTH電磁閥有什么作用功能如下
常閉型REXROTH電磁閥線圈通電時，電磁力將導閥打開，導閥設在主閥口上，此時主閥上腔的壓力通過導閥口卸荷，主閥下腔壓力大于上腔壓力，在利用壓力差和電磁力的共同作用下使主閥芯向上運動，電磁閥打開，介質流通；線圈斷電時，電磁力消失，在動鐵芯的自重和彈簧力的作用下關閉導閥孔，此時介質在平衡孔中進入主閥上腔，使上腔壓力升高，在彈簧力和壓力的作用下關閉主閥，介質斷流。 常開型與此相反；在零壓差或高壓時可靠工作，但功率及體積較大；導式電磁閥：由導閥和主閥芯連著形成通道，常閉型電磁閥電磁前驅通電時，產生的電磁力使導閥打開，介質流向出口，主閥上腔壓力迅速下降，在主閥上下腔內形成壓差克服彈簧力而隨之向上運動，主閥開啟，介質暢通流暢，電磁閥開啟；線圈斷電時，電磁力消失，動鐵芯在彈簧力的作用下復位，封閉導閥，介質從平衡孔中流入，主閥芯上腔壓力增大，并在彈簧力的作用下向下運動，封閉主閥，介質斷流，電磁閥封閉。常開型與此相反；體積小，功率低，但介質壓差范圍受限，管道中壓力必需知足開啟的壓差前提。
1.電(dian)(dian)(dian)(dian)(dian)磁(ci)閥(fa)從(cong)原(yuan)理(li)上(shang)(shang)分(fen)為三大(da)類： 電(dian)(dian)(dian)(dian)(dian)磁(ci)閥(fa)1）直(zhi)(zhi)(zhi)動(dong)式電(dian)(dian)(dian)(dian)(dian)磁(ci)閥(fa)： 原(yuan)理(li)：通(tong)電(dian)(dian)(dian)(dian)(dian)時(shi)，電(dian)(dian)(dian)(dian)(dian)磁(ci)線圈產生電(dian)(dian)(dian)(dian)(dian)磁(ci)力(li)(li)(li)把關(guan)(guan)閉(bi)(bi)件(jian)從(cong)閥(fa)座上(shang)(shang)提起(qi)，閥(fa)門(men)(men)(men)打開(kai)；斷電(dian)(dian)(dian)(dian)(dian)時(shi)，電(dian)(dian)(dian)(dian)(dian)磁(ci)力(li)(li)(li)消失，彈簧把關(guan)(guan)閉(bi)(bi)件(jian)壓(ya)在(zai)閥(fa)座上(shang)(shang)，閥(fa)門(men)(men)(men)關(guan)(guan)閉(bi)(bi)。 特(te)點：在(zai)真空(kong)、負壓(ya)、零壓(ya)時(shi)能正(zheng)常工作，但通(tong)徑般不超過(guo)25mm。 2）分(fen)步直(zhi)(zhi)(zhi)動(dong)式電(dian)(dian)(dian)(dian)(dian)磁(ci)閥(fa)： 原(yuan)理(li)： 它是種(zhong)直(zhi)(zhi)(zhi)動(dong)和(he)導(dao)式相結合的原(yuan)理(li)，當入口(kou)(kou)與(yu)出口(kou)(kou)沒(mei)有壓(ya)差(cha)時(shi)，通(tong)電(dian)(dian)(dian)(dian)(dian)后，電(dian)(dian)(dian)(dian)(dian)磁(ci)力(li)(li)(li)直(zhi)(zhi)(zhi)接把導(dao)小(xiao)閥(fa)和(he)主(zhu)(zhu)閥(fa)關(guan)(guan)閉(bi)(bi)件(jian)依(yi)次向上(shang)(shang)提起(qi)，閥(fa)門(men)(men)(men)打開(kai)。當入口(kou)(kou)與(yu)出口(kou)(kou)達到啟動(dong)壓(ya)差(cha)時(shi)，通(tong)電(dian)(dian)(dian)(dian)(dian)后，電(dian)(dian)(dian)(dian)(dian)磁(ci)力(li)(li)(li)導(dao)小(xiao)閥(fa)，主(zhu)(zhu)閥(fa)下腔(qiang)(qiang)壓(ya)力(li)(li)(li)上(shang)(shang)升，上(shang)(shang)腔(qiang)(qiang)壓(ya)力(li)(li)(li)下降，從(cong)而利用(yong)壓(ya)差(cha)把主(zhu)(zhu)閥(fa)向上(shang)(shang)推開(kai)；斷電(dian)(dian)(dian)(dian)(dian)時(shi)，導(dao)閥(fa)利用(yong)彈簧力(li)(li)(li)或(huo)介質壓(ya)力(li)(li)(li)推動(dong)關(guan)(guan)閉(bi)(bi)件(jian)，向下移動(dong)，使閥(fa)門(men)(men)(men)關(guan)(guan)閉(bi)(bi)。 特(te)點： 在(zai)零壓(ya)差(cha)或(huo)真空(kong)、高壓(ya)時(shi)亦(yi)能可*動(dong)作，但功(gong)率較大(da)，要求(qiu)必須水(shui)平安裝(zhuang)。 3）導(dao)式電(dian)(dian)(dian)(dian)(dian)磁(ci)閥(fa)： 原(yuan)理(li)：通(tong)電(dian)(dian)(dian)(dian)(dian)時(shi)，電(dian)(dian)(dian)(dian)(dian)磁(ci)力(li)(li)(li)把導(dao)孔打開(kai)，上(shang)(shang)腔(qiang)(qiang)室壓(ya)力(li)(li)(li)迅速下降，在(zai)關(guan)(guan) 電(dian)(dian)(dian)(dian)(dian)磁(ci)閥(fa)