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一、貝爾廠家直銷ZB45戶外防爆型電動執行器產品概述：

      普通(tong)防爆(bao)(bao)電動執行器(qi)防護等級為(wei)(wei)IP67。適用(yong)于易燃易爆(bao)(bao)的(de)(de)場(chang)合,安全系(xi)數高、操(cao)作功能強(qiang)、性能穩定等。防爆(bao)(bao)型(xing)產品(pin)(pin)有dI和(he)dIIBT4兩種，dI適用(yong)于煤(mei)礦(kuang)非采掘工(gong)(gong)作面；dIIBT4用(yong)于工(gong)(gong)廠，適用(yong)于環境為(wei)(wei)IIA、IIB級T1～T4組(zu)的(de)(de)性氣(qi)體混(hun)合物。 普通(tong)防爆(bao)(bao)電動執行器(qi)的(de)(de)性能符合GB3836.1-2000<性環境用(yong)防爆(bao)(bao)電氣(qi)設(she)備(bei)通(tong)用(yong)要(yao)求>及JB/T8529-1997<隔爆(bao)(bao)型(xing)閥門電動裝(zhuang)置技術條件>的(de)(de)規定。并經國家防爆(bao)(bao)電氣(qi)產品(pin)(pin)測試中心檢定，取得了(le)防爆(bao)(bao)合格證(zheng)。

二、貝爾廠家直銷ZB45戶外防爆型電動執行器結構：

      普通防爆電(dian)動(dong)執行器(qi)由電(dian)動(dong)機(ji)(ji)(ji)(ji)、減速機(ji)(ji)(ji)(ji)構、力矩控制機(ji)(ji)(ji)(ji)構、行程控制機(ji)(ji)(ji)(ji)構、開度指示(shi)機(ji)(ji)(ji)(ji)構、手(shou)－電(dian)動(dong)切(qie)換(huan)機(ji)(ji)(ji)(ji)構、手(shou)輪及(ji)電(dian)氣部分組成。其傳(chuan)動(dong)原理如(ru)圖所(suo)示(shi)。

注(zhu)意：隔爆型電(dian)(dian)氣部(bu)分加了(le)隔爆面結構，并采用(yong)隔爆型接線盒和YDF隔爆型閥門用(yong)電(dian)(dian)動(dong)機。安裝、調(diao)試和維護時，不可損傷隔爆面；不得在(zai)環境下拆去(qu)與電(dian)(dian)氣有關的(de)箱蓋帶(dai)電(dian)(dian)操(cao)作(zuo)，打開電(dian)(dian)氣箱蓋前(qian)必須先切(qie)斷電(dian)(dian)源；重裝時蓋嚴緊(jin)固以保證隔爆性(xing)能(neng)！

 電動機：戶外(wai)型采用(yong)YDF型，隔爆型采用(yong)YBDF型閥門專用(yong)三相異步電動機。

 減速(su)機構(gou)：由一對直(zhi)齒輪(lun)和蝸(gua)輪(lun)副兩(liang)級(ji)傳動組(zu)成。電動機的動力(li)經減速(su)機構(gou)傳遞(di)給輸出軸。

&nbsp;力矩控制機構：當(dang)輸出(chu)軸上受到(dao)一定(ding)轉矩后(hou)，蝸桿除旋轉外還(huan)產(chan)(chan)生(sheng)軸向位(wei)移(yi)，帶(dai)動(dong)(dong)曲(qu)拐，曲(qu)拐直(zhi)接（或通(tong)過撞塊）帶(dai)動(dong)(dong)支架產(chan)(chan)生(sheng)角(jiao)位(wei)移(yi)。當(dang)輸出(chu)軸上的(de)轉矩增大到(dao)整定(ding)轉矩時，則支架產(chan)(chan)生(sheng)的(de)位(wei)移(yi)量使開關動(dong)(dong)作，從而切斷(duan)電(dian)(dian)機電(dian)(dian)源，電(dian)(dian)動(dong)(dong)機停轉。以此實現對電(dian)(dian)動(dong)(dong)裝置輸出(chu)轉矩的(de)控制，達(da)到(dao)保護電(dian)(dian)動(dong)(dong)閥門的(de)目的(de)。

行程控制機構：

     采(cai)用(yong)十進制(zhi)(zhi)計數器(qi)(qi)原(yuan)理，又稱為計數器(qi)(qi)，控(kong)(kong)制(zhi)(zhi)精度(du)高，其工作原(yuan)理為：由減(jian)速箱(xiang)內的(de)一對大(da)小傘齒輪(lun)帶(dai)動(dong)(dong)(dong)中傳(chuan)小齒輪(lun)，再帶(dai)動(dong)(dong)(dong)行(xing)(xing)程控(kong)(kong)制(zhi)(zhi)機構工作。如(ru)果行(xing)(xing)程控(kong)(kong)制(zhi)(zhi)器(qi)(qi)按閥門開、關(guan)的(de)位置已調整(zheng)好(hao)，當控(kong)(kong)制(zhi)(zhi)器(qi)(qi)隨輸出(chu)軸(zhou)轉(zhuan)動(dong)(dong)(dong)到預(yu)先調整(zheng)好(hao)的(de)位置（圈(quan)數）時(shi)，則凸齒輪(lun)將轉(zhuan)動(dong)(dong)(dong)90度(du)，迫使微(wei)動(dong)(dong)(dong)開關(guan)動(dong)(dong)(dong)作，切(qie)斷電(dian)動(dong)(dong)(dong)機電(dian)源(yuan)，電(dian)動(dong)(dong)(dong)機停轉(zhuan)，從(cong)而(er)實現對電(dian)動(dong)(dong)(dong)裝置行(xing)(xing)程（轉(zhuan)圈(quan)數）的(de)控(kong)(kong)制(zhi)(zhi)。

 注1：為了控制較(jiao)多圈數的(de)閥門，可調整凸齒輪轉(zhuan)180度或270度再壓迫微動開關動作(zuo)。

開度指示機構：

輸入齒輪(lun)(lun)由計數(shu)器個位齒輪(lun)(lun)帶動(dong)(dong)(dong)，經減速后，指示盤(pan)隨(sui)閥(fa)門(men)的開(kai)(kai)關(guan)(guan)(guan)過(guo)程同時(shi)轉(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)，以指示閥(fa)門(men)的開(kai)(kai)關(guan)(guan)(guan)量，電位器軸和指示盤(pan)同步轉(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)，供遠傳(chuan)開(kai)(kai)度指示用。移(yi)動(dong)(dong)(dong)轉(zhuan)(zhuan)(zhuan)圈數(shu)調整齒輪(lun)(lun)可以改變轉(zhuan)(zhuan)(zhuan)圈數(shu)。開(kai)(kai)度指示機構內設一(yi)(yi)(yi)微(wei)動(dong)(dong)(dong)開(kai)(kai)關(guan)(guan)(guan)和凸輪(lun)(lun)，當電動(dong)(dong)(dong)裝置運轉(zhuan)(zhuan)(zhuan)時(shi)，旋轉(zhuan)(zhuan)(zhuan)凸輪(lun)(lun)周期性(xing)地使微(wei)動(dong)(dong)(dong)開(kai)(kai)關(guan)(guan)(guan)動(dong)(dong)(dong)作(zuo)，其頻(pin)率為輸出軸轉(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)一(yi)(yi)(yi)圈動(dong)(dong)(dong)作(zuo)一(yi)(yi)(yi)次(ci)或二次(ci)，可供閃光信(xin)號等使用。

手-電動切換機構：

為(wei)半自(zi)動(dong)(dong)(dong)(dong)切換，手(shou)(shou)(shou)(shou)動(dong)(dong)(dong)(dong)時(shi)(shi)需扳(ban)手(shou)(shou)(shou)(shou)柄切換，手(shou)(shou)(shou)(shou)動(dong)(dong)(dong)(dong)狀(zhuang)態轉變為(wei)電動(dong)(dong)(dong)(dong)時(shi)(shi)則(ze)自(zi)動(dong)(dong)(dong)(dong)運行。它(ta)由手(shou)(shou)(shou)(shou)柄、切換件、直立桿、離(li)合(he)器、壓簧等組成。需手(shou)(shou)(shou)(shou)作時(shi)(shi)，將手(shou)(shou)(shou)(shou)柄向(xiang)(xiang)手(shou)(shou)(shou)(shou)動(dong)(dong)(dong)(dong)方向(xiang)(xiang)推動(dong)(dong)(dong)(dong)，切換件使離(li)合(he)器抬高，并(bing)(bing)壓迫(po)壓簧。當(dang)手(shou)(shou)(shou)(shou)柄推到一(yi)定(ding)位置時(shi)(shi)，離(li)合(he)器即脫離(li)蝸(gua)輪(lun)而與手(shou)(shou)(shou)(shou)輪(lun)嚙合(he)，同時(shi)(shi)直立桿在扭簧作用(yong)下(xia)直立于蝸(gua)輪(lun)端面，支(zhi)撐住離(li)合(he)器不致(zhi)下(xia)落，切換完成即可放開手(shou)(shou)(shou)(shou)柄，使用(yong)托辦進(jin)行操作。而需電動(dong)(dong)(dong)(dong)操作時(shi)(shi)，電動(dong)(dong)(dong)(dong)機將帶動(dong)(dong)(dong)(dong)蝸(gua)輪(lun)轉動(dong)(dong)(dong)(dong)，支(zhi)承于蝸(gua)輪(lun)端面的(de)直立桿即倒下(xia)，在壓簧作用(yong)下(xia)離(li)合(he)器迅速向(xiang)(xiang)蝸(gua)輪(lun)方向(xiang)(xiang)移(yi)動(dong)(dong)(dong)(dong)，并(bing)(bing)與蝸(gua)輪(lun)嚙合(he)，同時(shi)(shi)與手(shou)(shou)(shou)(shou)輪(lun)脫開，自(zi)動(dong)(dong)(dong)(dong)實現手(shou)(shou)(shou)(shou)動(dong)(dong)(dong)(dong)到電動(dong)(dong)(dong)(dong)狀(zhuang)態的(de)轉換。

注(zhu)意：1.電動運行時切(qie)勿扳動切(qie)換(huan)手(shou)柄！

 &nbsp;    2.切(qie)換(huan)時按箭頭方向(xiang)推（或拉）動(dong)手柄，若(ruo)推不到位時應邊轉動(dong)托辦邊推動(dong)手柄！

三、江蘇貝爾 普通防爆開關型閥門電動裝置訂貨須知：

1 請按(an)型號表(biao)示(shi)方法寫(xie)明型號，如(ru)有(you)特殊要求，訂貨時必須說明，若不說明則按(an)本公司規定提供。

2 環境具(ju)有(you)性氣(qi)體必須說明(ming)，并必須符合本說明(ming)書中(zhong)防爆標志(zhi)的規定。

3 請寫明(ming)連接尺寸標準，閥桿直徑及伸出長度(du)，若連接尺寸與本說明(ming)書不符，可與本公司(si)協商解決。

4 手輪順時(shi)針(zhen)旋轉為關閥(fa)，如(ru)與此(ci)相(xiang)反(fan)必(bi)須說明。

5 推力型的閥桿螺母螺紋一般由用戶加工，本公(gong)司(si)只加工一預制孔。若需本公(gong)司(si)加工，請提供螺紋的尺寸。

6 本公司還可按用戶(hu)要求(qiu)，提供其他轉速的電動裝置。