淹(yan)沒(mei)(mei)式脈(mo)(mo)(mo)沖(chong)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)工(gong)作原理電(dian)(dian)磁(ci)(ci)脈(mo)(mo)(mo)沖(chong)閥(fa)(fa)(fa)是(shi)(shi)(shi)脈(mo)(mo)(mo)沖(chong)布袋除塵(chen)器噴吹(chui)清灰裝置的執行機構(gou)和(he)關鍵部(bu)件,主要分直(zhi)角式電(dian)(dian)磁(ci)(ci)脈(mo)(mo)(mo)沖(chong)閥(fa)(fa)(fa)、淹(yan)沒(mei)(mei)式電(dian)(dian)磁(ci)(ci)脈(mo)(mo)(mo)沖(chong)閥(fa)(fa)(fa)和(he)直(zhi)通式電(dian)(dian)磁(ci)(ci)脈(mo)(mo)(mo)沖(chong)閥(fa)(fa)(fa)三(san)類(lei),每類(lei)有6個規格接口從(cong)20~76mm(0.75~3in)。每個電(dian)(dian)磁(ci)(ci)脈(mo)(mo)(mo)沖(chong)閥(fa)(fa)(fa)一次噴吹(chui)耗氣量30~600m3/min(0.2~0.6MPa)。值得注(zhu)意的是(shi)(shi)(shi)國(guo)產脈(mo)(mo)(mo)沖(chong)閥(fa)(fa)(fa)的工(gong)作壓(ya)力直(zhi)角式閥(fa)(fa)(fa)和(he)直(zhi)通閥(fa)(fa)(fa)是(shi)(shi)(shi)0.4~0.6MPa,淹(yan)沒(mei)(mei)式閥(fa)(fa)(fa)是(shi)(shi)(shi)0.2~0.6MPa;產品不管哪一種閥(fa)(fa)(fa),工(gong)作壓(ya)力范圍(wei)均是(shi)(shi)(shi)0.06~0.86MPa,兩類(lei)閥(fa)(fa)(fa)沒(mei)(mei)有承受壓(ya)力和(he)應用壓(ya)力高(gao)低之區(qu)別。
淹(yan)沒式(shi)脈沖電磁(ci)閥(fa)技(ji)術(shu)與(yu)參數
淹沒(mei)式脈沖電磁(ci)閥(fa)采用(yong)淹沒(mei)于氣包中的(de)安裝方法,故稱(cheng)淹沒(mei)式。它與(yu)其他(ta)結構形式比較,減(jian)少(shao)了流(liu)道(dao)阻力,降低了噴吹氣源(yuan)壓力,因而能適(shi)用(yong)于壓力低的(de)場合,且(qie)可降低能源(yuan)消耗(hao)和延(yan)長膜片壽命。
淹沒式電(dian)磁脈沖(chong)(chong)閥工(gong)作原理是膜片把脈沖(chong)(chong)閥成前、后(hou)(hou)兩個室,當接通壓縮空氣(qi)時,壓縮空氣(qi)通過節(jie)流孔進入后(hou)(hou)氣(qi)室,此(ci)時后(hou)(hou)氣(qi)室壓力將膜片緊貼閥的輸出口,脈沖(chong)(chong)閥處(chu)于“關(guan)閉”狀態。
當(dang)脈沖控(kong)制儀的電信(xin)號使脈沖閥(fa)銜(xian)鐵移動,閥(fa)后氣(qi)室(shi)放氣(qi)孔打開,后氣(qi)室(shi)失壓,膜片移動,壓縮空氣(qi)通過(guo)閥(fa)輸出(chu)口噴(pen)吹(chui),脈沖閥(fa)處于(yu)“開啟(qi)”狀態。此時瞬間噴(pen)出(chu)壓縮空氣(qi)氣(qi)流。
脈沖控制儀電信號消失,脈沖閥銜鐵復位,后氣室故氣孔關閉(bi),后氣室壓(ya)力升高(gao)使膜片緊貼閥出口,脈沖閥又處于“關閉(bi)”狀(zhuang)態。
一般(ban)淹沒式脈沖電(dian)磁閥技術參數如下。
a、適應環境(jing):溫(wen)度為-10~+55℃;濕度為相對濕度不(bu)大(da)于85%。
b、工作(zuo)介(jie)質:清潔空氣。
c、噴(pen)吹氣源(yuan)壓(ya)力(li):推(tui)薦使(shi)用(yong)0.2~0.3MPa,也可使(shi)用(yong)0.3~0.6MPa。
d、噴(pen)(pen)吹(chui)(chui)(chui)氣(qi)(qi)量(liang):在噴(pen)(pen)吹(chui)(chui)(chui)氣(qi)(qi)源壓(ya)力為0.25MPa,噴(pen)(pen)吹(chui)(chui)(chui)時(shi)間為0.1s時(shi),噴(pen)(pen)吹(chui)(chui)(chui)氣(qi)(qi)量(liang):DMF-42噴(pen)(pen)吹(chui)(chui)(chui)耗(hao)氣(qi)(qi)量(liang)50(L/次),DMF-60噴(pen)(pen)吹(chui)(chui)(chui)耗(hao)氣(qi)(qi)量(liang)100(L/次),DMF-76噴(pen)(pen)吹(chui)(chui)(chui)耗(hao)氣(qi)(qi)量(liang)170(L/次),DMF-89噴(pen)(pen)吹(chui)(chui)(chui)耗(hao)氣(qi)(qi)量(liang)250(L/次)。
e、電(dian)磁先(xian)導(dao)閥(fa)工作電(dian)壓、電(dian)流:DC24V,0.8A;AC:220V,0.14A;AC110V,0.3A。
淹沒式脈沖電磁(ci)閥故(gu)障(zhang)分析與解決方法
電源斷電或(huo)(huo)清(qing)灰掌握器失靈;電磁脈(mo)沖(chong)(chong)(chong)閥(fa)(fa)內有雜物,一直漏氣;淹沒式(shi)電磁脈(mo)沖(chong)(chong)(chong)閥(fa)(fa)線(xian)圈燒壞;壓(ya)縮(suo)空氣壓(ya)力太低.排除辦(ban)法:恢復供(gong)電或(huo)(huo)修理(li)清(qing)灰節(jie)制器細心清(qing)算電磁脈(mo)沖(chong)(chong)(chong)閥(fa)(fa);換電磁脈(mo)沖(chong)(chong)(chong)閥(fa)(fa)線(xian)圈;檢查氣路系統及壓(ya)縮(suo)機。