REXROTH電磁閥是由電磁線圈和磁芯組成,是包含一個或幾個孔的閥體。當線圈通電或斷電時,磁芯的運轉將導致流體通過閥體或被切斷,以達到改變流體方向的目的。電磁閥的電磁部件由固定鐵芯、動鐵芯、線圈等部件組成;閥體部分由滑閥芯、滑閥套、彈簧底座等組成。電磁線圈被直接安裝在閥體上,閥體被封閉在密封管中,構成一個簡潔、緊湊的組合。我們在生產中常用的電磁閥有二位三通、二位四通、二位五通等。這里先說說二位的含義:對于電磁閥來說就是帶電和失電,對于所控制的閥門來說就是開和關。 REXROTH電磁閥的故障將直接影響到切換閥和調節閥的動作,常見的故障有電磁閥不動作,應從以下幾方面排查: 1、電磁(ci)閥(fa)接線頭松動或線頭脫落,電磁(ci)閥(fa)不得電,可緊(jin)固線頭。 2、電磁(ci)閥線(xian)(xian)圈(quan)燒(shao)壞,可(ke)拆(chai)下電磁(ci)閥的(de)接線(xian)(xian),用萬(wan)用表測(ce)量,如果開路,則電磁(ci)閥線(xian)(xian)圈(quan)燒(shao)壞。原因有(you)線(xian)(xian)圈(quan)受潮,引起絕緣不好而漏磁(ci),造成線(xian)(xian)圈(quan)內電流過大而燒(shao)毀(hui),因此要(yao)防止雨(yu)水進入電磁(ci)閥。此外(wai),彈簧過硬,反(fan)作(zuo)用力過大,線(xian)(xian)圈(quan)匝數太少,吸力不夠也可(ke)使得線(xian)(xian)圈(quan)燒(shao)毀(hui)。緊急(ji)處理時,可(ke)將線(xian)(xian)圈(quan)上(shang)的(de)手動按鈕由(you)正常工(gong)作(zuo)時的(de)“0”位打到“1”位,使得閥打開。 3、電(dian)磁(ci)閥(fa)(fa)卡(ka)住(zhu)(zhu):電(dian)磁(ci)閥(fa)(fa)的(de)滑(hua)閥(fa)(fa)套(tao)與閥(fa)(fa)芯的(de)配(pei)合間隙(xi)很小(小于0.008mm),一般都是(shi)單件裝配(pei),當有機械(xie)雜質(zhi)帶入(ru)或潤滑(hua)油(you)太少時,很容易卡(ka)住(zhu)(zhu)。處理方法可用鋼絲從頭部(bu)小孔捅入(ru),使(shi)其(qi)彈回。根本的(de)解(jie)決方法是(shi)要(yao)將(jiang)電(dian)磁(ci)閥(fa)(fa)拆下,取出閥(fa)(fa)芯及(ji)閥(fa)(fa)芯套(tao),用CCI4清洗(xi),使(shi)得閥(fa)(fa)芯在閥(fa)(fa)套(tao)內動作靈活。拆卸時應注意各部(bu)件的(de)裝配(pei)順序及(ji)外部(bu)接線(xian)位置(zhi),以便重新裝配(pei)及(ji)接線(xian)正確,還要(yao)檢(jian)查油(you)霧器噴油(you)孔是(shi)否(fou)堵塞,潤滑(hua)油(you)是(shi)否(fou)足夠(gou)。 4、漏(lou)氣(qi):漏(lou)氣(qi)會(hui)造成空(kong)氣(qi)壓力不足,使得強制閥(fa)(fa)的(de)(de)啟閉困難,原因是密(mi)封(feng)墊片損壞或(huo)滑閥(fa)(fa)磨(mo)損而造成幾個(ge)空(kong)腔竄氣(qi)。在(zai)處(chu)(chu)理(li)切(qie)換(huan)系(xi)統(tong)的(de)(de)電磁閥(fa)(fa)故(gu)障時,應選擇適當(dang)的(de)(de)時機(ji),等該電磁閥(fa)(fa)處(chu)(chu)于失電時進行處(chu)(chu)理(li),若在(zai)一個(ge)切(qie)換(huan)間隙內處(chu)(chu)理(li)不完,可將切(qie)換(huan)系(xi)統(tong)暫停,從容(rong)處(chu)(chu)理(li)。 REXROTH電磁閥從原理上分為三大類: 直動式(shi)電磁閥 原理(li):通電(dian)(dian)時(shi),電(dian)(dian)磁線圈(quan)產生(sheng)電(dian)(dian)磁力(li)把(ba)關閉(bi)(bi)件(jian)從(cong)閥座(zuo)上提(ti)起,閥門(men)打開;斷電(dian)(dian)時(shi),電(dian)(dian)磁力(li)消失,彈簧(huang)把(ba)關閉(bi)(bi)件(jian)壓在閥座(zuo)上,閥門(men)關閉(bi)(bi)。 特點:在真空、負(fu)壓、零壓時(shi)能正常工作,但(dan)通徑(jing)一般不超過25mm。 分(fen)步直動式電磁閥 原(yuan)理(li):它是一(yi)種直動和先導式(shi)相結合的原(yuan)理(li),當(dang)入口(kou)與出口(kou)沒有壓差(cha)時(shi),通電(dian)后,電(dian)磁力(li)直接把先導小(xiao)閥(fa)(fa)(fa)和主閥(fa)(fa)(fa)關閉(bi)件依(yi)次向上(shang)(shang)提起,閥(fa)(fa)(fa)門打開。當(dang)入口(kou)與出口(kou)達到啟動壓差(cha)時(shi),通電(dian)后,電(dian)磁力(li)先導小(xiao)閥(fa)(fa)(fa),主閥(fa)(fa)(fa)下(xia)腔壓力(li)上(shang)(shang)升(sheng),上(shang)(shang)腔壓力(li)下(xia)降,從而利用壓差(cha)把主閥(fa)(fa)(fa)向上(shang)(shang)推(tui)開;斷(duan)電(dian)時(shi),先導閥(fa)(fa)(fa)利用彈簧力(li)或介質壓力(li)推(tui)動關閉(bi)件,向下(xia)移動,使閥(fa)(fa)(fa)門關閉(bi)。 特點:在零壓(ya)差或真(zhen)空、高壓(ya)時亦能可*動作(zuo),但功率較大,要求必須水平安裝。 先導式電(dian)磁閥 原理:通電(dian)時,電(dian)磁力(li)(li)(li)(li)把先(xian)導(dao)孔打(da)開,上腔(qiang)室壓(ya)力(li)(li)(li)(li)迅速(su)下(xia)降,在關(guan)(guan) 閉(bi)(bi)件周圍形成上低下(xia)高的壓(ya)差,流體(ti)(ti)壓(ya)力(li)(li)(li)(li)推動(dong)關(guan)(guan)閉(bi)(bi)件向上移動(dong),閥門(men)打(da)開;斷電(dian)時,彈(dan)簧力(li)(li)(li)(li)把先(xian)導(dao)孔關(guan)(guan)閉(bi)(bi),入口(kou)壓(ya)力(li)(li)(li)(li)通過旁通孔迅速(su)腔(qiang)室在關(guan)(guan)閥件周圍形成下(xia)低上高的壓(ya)差,流體(ti)(ti)壓(ya)力(li)(li)(li)(li)推動(dong)關(guan)(guan)閉(bi)(bi)件向下(xia)移動(dong),關(guan)(guan)閉(bi)(bi)閥門(men)。 特點:流(liu)體(ti)壓(ya)力范圍上限較高,可任意(yi)安裝(需定制)但必須滿足流(liu)體(ti)壓(ya)差條件。 2、電磁閥從閥結構(gou)和材(cai)料上的不同與(yu)原理上的區別,分(fen)(fen)為六個分(fen)(fen)支小(xiao)類:直動膜片結構(gou)、分(fen)(fen)步直動膜片結構(gou)、先導(dao)膜片結構(gou)、直動活(huo)塞(sai)結構(gou)、分(fen)(fen)步直動活(huo)塞(sai)結構(gou)、先導(dao)活(huo)塞(sai)結構(gou)。 3、電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)按(an)照功能分類:水用電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、蒸(zheng)汽電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、制冷(leng)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、低溫電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、燃氣(qi)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、消防電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、氨(an)用電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、氣(qi)體電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、液體電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、微型電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、脈沖(chong)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、液壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa) 常(chang)開電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、油用電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、直流電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、高壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)、防爆(bao)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)閥(fa)等。 REXROTH電磁閥系列型號: 4WE6FA6X/EG24NZ5L 4WE6FA6X/EW220N9K4 4WE6FA6X/EW220RNZ5L 4WE6FB6X/EG24N9K4 4WE6FB6X/EG24NZ5L 4WE6FB6X/EW220N9K4 4WE6FB6X/EW220RNZ5L 4WE6G6X/EG24N9K4 4WE6G6X/EG24NZ5L 4WE6G6X/EW220N9K4 4WE6G6X/EW220RNZ5L 4WE6GA6X/EG24N9K4 4WE6GA6X/EG24NZ5L 4WE6GA6X/EW220N9K4 4WE6GA6X/EW220RNZ5L |