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中山電磁閥
中山電磁閥

中山電磁閥

  • 所屬分類:中山配件(jian)類(lei)
  • 發布日期:2019-05-07
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電(dian)磁閥(fa)(Electromagnetic valve)是(shi)用電(dian)磁控制(zhi)的(de)(de)(de)工(gong)業設備,是(shi)用來(lai)控制(zhi)流體的(de)(de)(de)自動(dong)化基礎元(yuan)件(jian),屬于(yu)執行器,并不限(xian)于(yu)液壓、氣動(dong)。用在工(gong)業控制(zhi)系統中(zhong)調整介質(zhi)的(de)(de)(de)方向(xiang)、流量(liang)、速度和其(qi)他的(de)(de)(de)參數。電(dian)磁閥(fa)可以配合不同(tong)(tong)的(de)(de)(de)電(dian)路來(lai)實現預期的(de)(de)(de)控制(zhi),而控制(zhi)的(de)(de)(de)精度和靈活性都能夠保證。電(dian)磁閥(fa)有很多(duo)種,不同(tong)(tong)的(de)(de)(de)電(dian)磁閥(fa)在控制(zhi)系統的(de)(de)(de)不同(tong)(tong)位置發揮作(zuo)用,最常用的(de)(de)(de)是(shi)單向(xiang)閥(fa)、安全閥(fa)、方向(xiang)控制(zhi)閥(fa)、速度調節(jie)閥(fa)等。

電(dian)磁閥里有密閉(bi)的(de)(de)腔,在(zai)不(bu)同(tong)位置開(kai)(kai)有通(tong)(tong)孔(kong),每(mei)個孔(kong)連接不(bu)同(tong)的(de)(de)油(you)(you)管(guan)(guan),腔中間是(shi)活(huo)塞(sai),兩面是(shi)兩塊電(dian)磁鐵(tie)(tie),哪(na)面的(de)(de)磁鐵(tie)(tie)線圈通(tong)(tong)電(dian)閥體就(jiu)會被吸引(yin)到哪(na)邊(bian),通(tong)(tong)過(guo)控(kong)制閥體的(de)(de)移動(dong)來開(kai)(kai)啟或關閉(bi)不(bu)同(tong)的(de)(de)排(pai)油(you)(you)孔(kong),而進(jin)(jin)油(you)(you)孔(kong)是(shi)常開(kai)(kai)的(de)(de),液(ye)壓油(you)(you)就(jiu)會進(jin)(jin)入不(bu)同(tong)的(de)(de)排(pai)油(you)(you)管(guan)(guan),然后通(tong)(tong)過(guo)油(you)(you)的(de)(de)壓力(li)來推動(dong)油(you)(you)缸的(de)(de)活(huo)塞(sai),活(huo)塞(sai)又帶動(dong)活(huo)塞(sai)桿,活(huo)塞(sai)桿帶動(dong)機械裝置。這樣通(tong)(tong)過(guo)控(kong)制電(dian)磁鐵(tie)(tie)的(de)(de)電(dian)流通(tong)(tong)斷就(jiu)控(kong)制了機械運動(dong)。

1、電磁閥從原理(li)上分為三(san)大類:

直動(dong)式電(dian)磁(ci)閥(fa)

原(yuan)理(li):通(tong)電時(shi),電磁(ci)線圈產生(sheng)電磁(ci)力把關(guan)(guan)(guan)閉件從閥(fa)座上提(ti)起,閥(fa)門打開;斷電時(shi),電磁(ci)力消失,彈簧把關(guan)(guan)(guan)閉件壓在閥(fa)座上,閥(fa)門關(guan)(guan)(guan)閉。

特點:在真空、負壓(ya)、零壓(ya)時能正常工作,但(dan)通徑(jing)一般不(bu)超過25mm。

分步直動式電磁(ci)閥

原理(li):它是一種直動和先(xian)導(dao)式相結合的原理(li),當入口與出口沒有壓(ya)(ya)差(cha)時(shi),通電(dian)(dian)后,電(dian)(dian)磁力直接把(ba)先(xian)導(dao)小閥(fa)(fa)(fa)(fa)和主閥(fa)(fa)(fa)(fa)關(guan)閉(bi)件依次向(xiang)上(shang)提起,閥(fa)(fa)(fa)(fa)門(men)打開。當入口與出口達(da)到啟動壓(ya)(ya)差(cha)時(shi),通電(dian)(dian)后,電(dian)(dian)磁力先(xian)導(dao)小閥(fa)(fa)(fa)(fa),主閥(fa)(fa)(fa)(fa)下(xia)(xia)腔壓(ya)(ya)力上(shang)升,上(shang)腔壓(ya)(ya)力下(xia)(xia)降(jiang),從(cong)而利(li)用壓(ya)(ya)差(cha)把(ba)主閥(fa)(fa)(fa)(fa)向(xiang)上(shang)推(tui)開;斷電(dian)(dian)時(shi),先(xian)導(dao)閥(fa)(fa)(fa)(fa)利(li)用彈簧力或介質壓(ya)(ya)力推(tui)動關(guan)閉(bi)件,向(xiang)下(xia)(xia)移動,使閥(fa)(fa)(fa)(fa)門(men)關(guan)閉(bi)。

特(te)點:在(zai)零壓差或真空、高壓時亦能可*動作,但功率較大,要(yao)求必須(xu)水平安裝。

先導(dao)式電磁閥

原理:通電(dian)(dian)時(shi),電(dian)(dian)磁力(li)把先導孔(kong)打開(kai),上(shang)(shang)腔室壓(ya)力(li)迅(xun)(xun)速(su)下(xia)降,在關(guan)(guan) 閉(bi)件(jian)周(zhou)圍(wei)(wei)形成上(shang)(shang)低下(xia)高的壓(ya)差,流(liu)(liu)體壓(ya)力(li)推(tui)動(dong)關(guan)(guan)閉(bi)件(jian)向上(shang)(shang)移(yi)動(dong),閥(fa)(fa)門打開(kai);斷(duan)電(dian)(dian)時(shi),彈(dan)簧力(li)把先導孔(kong)關(guan)(guan)閉(bi),入口(kou)壓(ya)力(li)通過旁通孔(kong)迅(xun)(xun)速(su)腔室在關(guan)(guan)閥(fa)(fa)件(jian)周(zhou)圍(wei)(wei)形成下(xia)低上(shang)(shang)高的壓(ya)差,流(liu)(liu)體壓(ya)力(li)推(tui)動(dong)關(guan)(guan)閉(bi)件(jian)向下(xia)移(yi)動(dong),關(guan)(guan)閉(bi)閥(fa)(fa)門。

特點(dian):流(liu)體(ti)壓(ya)力(li)范(fan)圍上限(xian)較高,可任意安(an)裝(需定制)但必須滿足流(liu)體(ti)壓(ya)差條件(jian)。

2、電(dian)磁閥從(cong)閥結(jie)構(gou)和材料上的不同與原理上的區(qu)別,分為六個(ge)分支小(xiao)類:直動(dong)膜(mo)片結(jie)構(gou)、分步直動(dong)膜(mo)片結(jie)構(gou)、先導膜(mo)片結(jie)構(gou)、直動(dong)活(huo)塞(sai)結(jie)構(gou)、分步直動(dong)活(huo)塞(sai)結(jie)構(gou)、先導活(huo)塞(sai)結(jie)構(gou)。

3、電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)按照功能分類:水(shui)用電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、蒸汽(qi)電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、制(zhi)冷電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、低溫電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、燃氣(qi)(qi)電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、消防電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、氨用電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、氣(qi)(qi)體電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、液(ye)體電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、微(wei)型電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、脈(mo)沖電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、液(ye)壓電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa) 常開電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、油用電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、直流電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、高壓電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)、防爆電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)(fa)等。


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