日本SMC電磁閥結構型式,日本SMC電磁閥

日本SMC電磁閥的結構型式容易控制內泄漏，直至降為零。所以，電磁閥使用特別安全，尤其適用于腐蝕性、有毒或高低溫的介質。
3、SMC電磁閥系統簡單，便接電腦，價格低謙。電磁閥本身結構簡單，價格也低，比起調節閥等其它種類執行器易于安裝維護。更顯著的是所組成的自控系統簡單得多，價格要低得多。
4、由于電磁閥是開關信號控制，與工控計算機連接十分方便。在當今電腦普及，價格大幅下降的時代，電磁閥的優勢就更加明顯。SMC電磁閥動作快遞，功率微小，外形輕巧。
電磁閥響應時間可以短至幾個毫秒，即使是先導式電磁閥也可以控制在幾十毫秒內。由于自成回路，比之其它自控閥反應更靈敏。
5、設計得當的電磁閥線圈功率消耗很低，屬節能產品；還可做到只需觸發動作，自動保持閥位，平時一點也不耗電。電磁閥外形尺寸小，既節省空間，又輕巧美觀。電磁閥調節精度受限，適用介質受限。日本SMC電磁閥結構型式,日本SMC電磁閥
6、電磁閥通常只有開關兩種狀態，閥芯只能處于兩個極限位置，不能連續調節，（力圖突破的新構思不少，但還都處于試驗試用階段）所以調節精度還受到一定限制。
7、SMC電磁閥對介質潔凈度有較高要求，含顆粒狀的介質不能適用，如屬雜質須先濾去。另外，粘稠狀介質不能適用，而且，特定的產品適用的介質粘度范圍相對較窄。
8、SMC電磁閥型號多樣，用途廣泛。電磁閥雖有先天不足，優點仍十分突出，所以就設計成多種多樣的產品，滿足各種不同的需求，用途極為廣泛。電磁閥技術的進步也都是圍繞著如何克服先天不足，如何更好地發揮固有優勢而展開
SMC電磁閥有常閉型和常開型二種.常閉型斷電時呈關閉狀態,當線圈通電時 產生電磁力,使動鐵芯克服彈簧力同靜鐵芯吸合直接開啟閥,介質 呈通路; 當線圈斷電時電磁力消失, 動鐵芯在彈簧力的作用下復位, 直接關閉SMC電磁閥有什么作用之處，閥口,介質不通.結構簡單,動作可靠,在零壓差和微真 空下正常工作. 常開型正好相反. 如小于 φ6 流量通徑的電磁閥. （圖 一是典型結構圖）
二,分步直動式電磁閥該閥采用一次開閥和二次開閥連在一體,主閥和導閥分步使電磁力 和壓差直接開啟主閥口. 當線圈通電時, 產生電磁力使動鐵芯 和 靜鐵芯吸合,導閥口開啟而導閥口設在主閥口上,且動鐵芯與主閥 芯連在一起,此時主閥上腔的壓力通過導閥口卸荷,在壓力差和電 磁力的同時作用下使主閥芯向上運動,開啟主閥介質流通.當線圈 斷電時電磁力消失,此時動鐵芯在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芯上腔,使上腔壓力升高,此時 在彈簧復位和壓力的作用下關閉主閥,介質斷流.結構合理,動作 可靠,在零壓差時工作也可靠.如:ZQDF,ZS,2W 等.（圖二是 典型結構圖）日本SMC電磁閥結構型式,日本SMC電磁閥
三,間(jian)(jian)(jian)接先(xian)(xian)導式(shi)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa) 該系(xi)列電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)由(you)先(xian)(xian)導閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)和(he)主閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯著(zhu)形成(cheng)(cheng)通(tong)道組合(he)而(er)成(cheng)(cheng);常(chang)閉型(xing)(xing) 在(zai)(zai)(zai)(zai)未通(tong)電(dian)(dian)(dian)(dian)(dian)時(shi)(shi),呈關(guan)閉狀(zhuang)態.當(dang)線圈通(tong)電(dian)(dian)(dian)(dian)(dian)時(shi)(shi),產(chan)(chan)生(sheng)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)(li)使動(dong)鐵(tie)(tie)芯和(he) 靜鐵(tie)(tie)芯吸合(he),導閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)口(kou)(kou)(kou)打開,介質(zhi)(zhi)流(liu)(liu)(liu)向(xiang)出(chu)口(kou)(kou)(kou),此時(shi)(shi)主閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯上(shang)腔壓(ya)(ya)力(li)(li)(li)(li)減 少,低于(yu)(yu)進口(kou)(kou)(kou)側的(de)(de)(de)(de)(de)(de)壓(ya)(ya)力(li)(li)(li)(li),形成(cheng)(cheng)壓(ya)(ya)差(cha)克服(fu)彈(dan)簧(huang)阻力(li)(li)(li)(li)而(er)隨之(zhi)向(xiang)上(shang)運動(dong), 達到開啟主閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)口(kou)(kou)(kou)的(de)(de)(de)(de)(de)(de)目(mu)的(de)(de)(de)(de)(de)(de),介質(zhi)(zhi)流(liu)(liu)(liu)通(tong).當(dang)線圈斷電(dian)(dian)(dian)(dian)(dian)時(shi)(shi),磁(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)(li)消失,動(dong) 鐵(tie)(tie)芯在(zai)(zai)(zai)(zai)彈(dan)簧(huang)力(li)(li)(li)(li)作(zuo)(zuo)用下(xia)復位關(guan)閉先(xian)(xian)導口(kou)(kou)(kou),此時(shi)(shi)介質(zhi)(zhi)從(cong)平衡孔流(liu)(liu)(liu)入,主 閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯上(shang)腔壓(ya)(ya)力(li)(li)(li)(li)增(zeng)大(da)(da)(da),并在(zai)(zai)(zai)(zai)彈(dan)簧(huang)力(li)(li)(li)(li)的(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用下(xia)向(xiang)下(xia)運動(dong),關(guan)閉主閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)口(kou)(kou)(kou). 常(chang)開式(shi)原理正好相反.如:SLA,DF（φ15 以(yi)上(shang)口(kou)(kou)(kou)徑）,ZCZ 等. （圖(tu)三是典(dian)型(xing)(xing)結構圖(tu)） 電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)選(xuan)(xuan)(xuan)(xuan)型(xing)(xing) 一(yi)(yi)(yi)(yi):適(shi)用性(xing)(xing)管(guan)(guan)(guan)路(lu)(lu)中(zhong)的(de)(de)(de)(de)(de)(de)流(liu)(liu)(liu)體(ti)必(bi)(bi)須和(he)選(xuan)(xuan)(xuan)(xuan)用的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)系(xi)列型(xing)(xing)號中(zhong)標定(ding)(ding)(ding)(ding)(ding)的(de)(de)(de)(de)(de)(de)介質(zhi)(zhi)一(yi)(yi)(yi)(yi)致(zhi). 流(liu)(liu)(liu)體(ti)的(de)(de)(de)(de)(de)(de)溫度(du)(du)必(bi)(bi)須小(xiao)于(yu)(yu)選(xuan)(xuan)(xuan)(xuan)用電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)標定(ding)(ding)(ding)(ding)(ding)溫度(du)(du). 電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)允(yun)(yun)(yun)許(xu)液體(ti)粘度(du)(du)一(yi)(yi)(yi)(yi)般(ban)在(zai)(zai)(zai)(zai) 20CST 以(yi)下(xia),大(da)(da)(da)于(yu)(yu) 20CST 應(ying)注(zhu)(zhu)明. 工(gong)(gong)作(zuo)(zuo)壓(ya)(ya)差(cha),管(guan)(guan)(guan)路(lu)(lu)zui高(gao)(gao)壓(ya)(ya)差(cha)在(zai)(zai)(zai)(zai)小(xiao)于(yu)(yu) 0.04MPa 時(shi)(shi)應(ying)選(xuan)(xuan)(xuan)(xuan)用如 ZS,2W,ZQDF,ZCM 系(xi)列等直動(dong)式(shi)和(he)分步直動(dong)式(shi); zui低工(gong)(gong)作(zuo)(zuo)壓(ya)(ya)差(cha)大(da)(da)(da)于(yu)(yu) 0.04MPa 時(shi)(shi) 可(ke)(ke)選(xuan)(xuan)(xuan)(xuan)用先(xian)(xian)導式(shi)（壓(ya)(ya)差(cha)式(shi)）電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa);zui高(gao)(gao)工(gong)(gong)作(zuo)(zuo)壓(ya)(ya)差(cha)應(ying) 小(xiao)于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)zui大(da)(da)(da)標定(ding)(ding)(ding)(ding)(ding)壓(ya)(ya)力(li)(li)(li)(li);一(yi)(yi)(yi)(yi)般(ban)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)都是單向(xiang)工(gong)(gong)作(zuo)(zuo),因此要(yao)注(zhu)(zhu) 意(yi)(yi)是否有(you)反壓(ya)(ya)差(cha),如有(you)安裝(zhuang)止(zhi)回閥(fa)(fa)(fa)(fa)(fa)(fa)(fa). 流(liu)(liu)(liu)體(ti)清潔(jie)度(du)(du)不高(gao)(gao)時(shi)(shi)應(ying)在(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)前(qian)安裝(zhuang)過濾器,一(yi)(yi)(yi)(yi)般(ban)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci) 閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)對(dui)介質(zhi)(zhi)要(yao)求(qiu)清潔(jie)度(du)(du)要(yao)好. 注(zhu)(zhu)意(yi)(yi)流(liu)(liu)(liu)量孔徑和(he)接管(guan)(guan)(guan)口(kou)(kou)(kou)徑;電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)一(yi)(yi)(yi)(yi)般(ban)只有(you)開關(guan)兩位控制;條件(jian)允(yun)(yun)(yun) 許(xu)請(qing)安裝(zhuang)旁路(lu)(lu)管(guan)(guan)(guan),便于(yu)(yu)維修;有(you)水錘(chui)現象(xiang)時(shi)(shi)要(yao)定(ding)(ding)(ding)(ding)(ding)制電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)開閉時(shi)(shi) 間(jian)(jian)(jian)調節. 注(zhu)(zhu)意(yi)(yi)環境(jing)溫度(du)(du)對(dui)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)影響 電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)和(he)消耗功(gong)率應(ying)根(gen)據輸出(chu)容量選(xuan)(xuan)(xuan)(xuan)取(qu),電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)一(yi)(yi)(yi)(yi)般(ban)允(yun)(yun)(yun)許(xu) ±10%左右,必(bi)(bi)須注(zhu)(zhu)意(yi)(yi)交(jiao)流(liu)(liu)(liu)起動(dong)時(shi)(shi) VA 值較高(gao)(gao). 二,可(ke)(ke)靠性(xing)(xing) 電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)分為常(chang)閉和(he)常(chang)開二種;一(yi)(yi)(yi)(yi)般(ban)選(xuan)(xuan)(xuan)(xuan)用常(chang)閉型(xing)(xing),通(tong)電(dian)(dian)(dian)(dian)(dian)打開,斷電(dian)(dian)(dian)(dian)(dian)關(guan) 閉;但在(zai)(zai)(zai)(zai)開啟時(shi)(shi)間(jian)(jian)(jian)很(hen)(hen)(hen)長關(guan)閉時(shi)(shi)很(hen)(hen)(hen)短時(shi)(shi)要(yao)選(xuan)(xuan)(xuan)(xuan)用常(chang)開型(xing)(xing)了. 壽命(ming)試(shi)驗,工(gong)(gong)廠一(yi)(yi)(yi)(yi)般(ban)屬于(yu)(yu)型(xing)(xing)式(shi)試(shi)驗項目(mu),確切地說(shuo)我國還沒有(you)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci) 閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)專(zhuan)業標準(zhun),因此選(xuan)(xuan)(xuan)(xuan)用電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)價(jia)格時(shi)(shi)慎(shen)重. 動(dong)作(zuo)(zuo)時(shi)(shi)間(jian)(jian)(jian)很(hen)(hen)(hen)短頻率較高(gao)(gao)時(shi)(shi)一(yi)(yi)(yi)(yi)般(ban)選(xuan)(xuan)(xuan)(xuan)取(qu)直動(dong)式(shi),大(da)(da)(da)口(kou)(kou)(kou)徑選(xuan)(xuan)(xuan)(xuan)用快速系(xi)列. 三,安全性(xing)(xing) 一(yi)(yi)(yi)(yi)般(ban)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)不防水, 在(zai)(zai)(zai)(zai)條件(jian)不允(yun)(yun)(yun)許(xu)時(shi)(shi)請(qing)選(xuan)(xuan)(xuan)(xuan)用防水型(xing)(xing), 工(gong)(gong)廠可(ke)(ke)以(yi)定(ding)(ding)(ding)(ding)(ding)做. 電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)zui高(gao)(gao)標定(ding)(ding)(ding)(ding)(ding)公稱壓(ya)(ya)力(li)(li)(li)(li)一(yi)(yi)(yi)(yi)定(ding)(ding)(ding)(ding)(ding)要(yao)超過管(guan)(guan)(guan)路(lu)(lu)內的(de)(de)(de)(de)(de)(de)zui高(gao)(gao)壓(ya)(ya)力(li)(li)(li)(li),否則使 用壽命(ming)會縮短或產(chan)(chan)生(sheng)其它意(yi)(yi)外情況. 有(you)腐蝕(shi)性(xing)(xing)液體(ti)的(de)(de)(de)(de)(de)(de)應(ying)選(xuan)(xuan)(xuan)(xuan)用全不銹鋼型(xing)(xing),強腐蝕(shi)性(xing)(xing)流(liu)(liu)(liu)體(ti)宜選(xuan)(xuan)(xuan)(xuan)用塑料王 （SLF）電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa). 爆炸性(xing)(xing)環境(jing)必(bi)(bi)須選(xuan)(xuan)(xuan)(xuan)用相應(ying)的(de)(de)(de)(de)(de)(de)防爆產(chan)(chan)品. 四,經濟性(xing)(xing) 有(you)很(hen)(hen)(hen)多電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)可(ke)(ke)以(yi)通(tong)用,但在(zai)(zai)(zai)(zai)能滿足以(yi)上(shang)三點(dian)的(de)(de)(de)(de)(de)(de)基礎上(shang)應(ying)選(xuan)(xuan)(xuan)(xuan)用zui經 濟的(de)(de)(de)(de)(de)(de)產(chan)(chan)品