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一(yi)、多回轉煤礦井下隔爆型礦用閥門電動裝置簡(jian)介：

是由(you)礦用防爆型閥(fa)門電動裝(zhuang)置和閘閥(fa)組合而成(cheng)的。電動(dong)(dong)閘(zha)(zha)閥(fa)(fa)(fa)的(de)(de)(de)(de)(de)閘(zha)(zha)板(ban)隨閥(fa)(fa)(fa)桿一起作(zuo)直線運(yun)動(dong)(dong)的(de)(de)(de)(de)(de)，亦叫明桿電動(dong)(dong)閘(zha)(zha)閥(fa)(fa)(fa)。通(tong)常在升降桿上(shang)有梯形(xing)螺(luo)紋，通(tong)過閥(fa)(fa)(fa)門(men)頂(ding)端的(de)(de)(de)(de)(de)螺(luo)母以及閥(fa)(fa)(fa)體(ti)上(shang)的(de)(de)(de)(de)(de)導(dao)槽，將旋轉(zhuan)運(yun)動(dong)(dong)變為(wei)(wei)直線運(yun)動(dong)(dong)，也就是(shi)將操作(zuo)轉(zhuan)矩(ju)變為(wei)(wei)操作(zuo)推力。開(kai)(kai)啟閥(fa)(fa)(fa)門(men)時(shi)，當(dang)閘(zha)(zha)板(ban)提升高度(du)等于閥(fa)(fa)(fa)門(men)通(tong)徑的(de)(de)(de)(de)(de)1：1倍時(shi)，流(liu)體(ti)的(de)(de)(de)(de)(de)通(tong)道(dao)*暢通(tong)，但在運(yun)行時(shi)，此位(wei)(wei)(wei)置(zhi)是(shi)無(wu)法監視的(de)(de)(de)(de)(de)。實際使用時(shi)，是(shi)以閥(fa)(fa)(fa)桿的(de)(de)(de)(de)(de)頂(ding)點作(zuo)為(wei)(wei)標志，即開(kai)(kai)不動(dong)(dong)的(de)(de)(de)(de)(de)位(wei)(wei)(wei)置(zhi)，作(zuo)為(wei)(wei)它(ta)的(de)(de)(de)(de)(de)全(quan)開(kai)(kai)位(wei)(wei)(wei)置(zhi)。為(wei)(wei)考(kao)慮溫(wen)度(du)變化出(chu)現鎖死現象,通(tong)常在開(kai)(kai)到(dao)頂(ding)點位(wei)(wei)(wei)置(zhi)上(shang),再倒回1/2－1圈，作(zuo)為(wei)(wei)全(quan)開(kai)(kai)閥(fa)(fa)(fa)門(men)的(de)(de)(de)(de)(de)位(wei)(wei)(wei)置(zhi)。因此，閥(fa)(fa)(fa)門(men)的(de)(de)(de)(de)(de)全(quan)開(kai)(kai)位(wei)(wei)(wei)置(zhi)，按閘(zha)(zha)板(ban)的(de)(de)(de)(de)(de)位(wei)(wei)(wei)置(zhi)（即行程>來確定。

二、多回轉煤礦井下隔爆型礦用閥門電動裝置工作環境和主要技術(shu)參(can)數：

電源：380V、660V（額(e)定電壓）

控制電壓：24V、36V

工 作 制：為短時10分(fen)鐘(zhong)

工作環境(jing)：a.海拔不大于2000m；

b. 環(huan)境溫度：-20～+40℃；

c. 相對濕度：≤95%（+25℃時）；d.用于含有甲烷、煤塵爆炸性危險氣體的煤礦井下(采掘工作面除外)。

三、操作方(fang)式：

1、電動(dong)(dong)機：取得(de)MA證的閥門電動(dong)(dong)裝置用隔爆(bao)型(xing)三相異步電動(dong)(dong)機

2、減(jian)速機(ji)構：由(you)一對直齒輪(lun)和蝸(gua)輪(lun)副(fu)兩級傳動(dong)(dong)組成；電動(dong)(dong)機(ji)的動(dong)(dong)力經(jing)減(jian)速機(ji)構傳遞給輸出軸。

3、力(li)矩(ju)(ju)(ju)控制(zhi)機構：當輸出軸上(shang)受到一定(ding)轉(zhuan)矩(ju)(ju)(ju)后，蝸(gua)桿除旋轉(zhuan)外還(huan)產(chan)生(sheng)軸向位移，帶動曲拐，曲拐通過撞(zhuang)塊帶動支(zhi)架(jia)(jia)產(chan)生(sheng)角位移；當輸出軸上(shang)的轉(zhuan)矩(ju)(ju)(ju)增大到整定(ding)轉(zhuan)矩(ju)(ju)(ju)時，則支(zhi)架(jia)(jia)產(chan)生(sheng)的位移量使力(li)矩(ju)(ju)(ju)開關動作，從(cong)而切斷(duan)電機電源(yuan)，電動機停(ting)轉(zhuan)。以(yi)此實(shi)現對電動裝置輸出轉(zhuan)矩(ju)(ju)(ju)的控制(zhi)，達(da)到保護帶(dai)煤安(an)證防爆(bao)證電動閘閥(fa)的目的。

4、行程控(kong)(kong)(kong)制(zhi)機(ji)構(gou)(gou)：采用十進(jin)制(zhi)計數器(qi)原理，又稱為計數器(qi)，控(kong)(kong)(kong)制(zhi)精度高，其工作原理為：由(you)減速箱(xiang)內的(de)一對(dui)大小傘(san)齒(chi)輪(lun)帶動(dong)中(zhong)傳小齒(chi)輪(lun)，再帶動(dong)行程控(kong)(kong)(kong)制(zhi)機(ji)構(gou)(gou)工作。如(ru)果行程控(kong)(kong)(kong)制(zhi)機(ji)構(gou)(gou)按(an)閥門開、關的(de)位(wei)(wei)置已調整好，當行程控(kong)(kong)(kong)制(zhi)機(ji)構(gou)(gou)隨輸(shu)出軸(zhou)轉(zhuan)動(dong)到預先調整好的(de)位(wei)(wei)置（圈數）時，則(ze)凸(tu)輪(lun)將向行程開關轉(zhuan)動(dong)，迫使行程開關動(dong)作，切(qie)斷(duan)電(dian)(dian)動(dong)機(ji)電(dian)(dian)源，電(dian)(dian)動(dong)機(ji)停轉(zhuan)，從而實(shi)現(xian)對(dui)電(dian)(dian)動(dong)裝置行程（轉(zhuan)圈數）的(de)控(kong)(kong)(kong)制(zhi)。

5、開度指(zhi)示機構(gou)：輸入齒輪(lun)由(you)計數(shu)器個位(wei)齒輪(lun)帶(dai)動，經減速后(hou)，指(zhi)示盤隨帶(dai)煤(mei)安證(zheng)防爆(bao)證(zheng)電動(dong)閘閥的開(kai)關(guan)過程同(tong)(tong)時(shi)(shi)轉動(dong)(dong)(dong)，以指示閥門(men)的開(kai)關(guan)量，電位器軸和指示盤同(tong)(tong)步轉動(dong)(dong)(dong)，供遠傳開(kai)度(du)指示用。移動(dong)(dong)(dong)轉圈(quan)數調整齒輪(lun)可(ke)以改變轉圈(quan)數。開(kai)度(du)指示機構內設一微動(dong)(dong)(dong)開(kai)關(guan)和凸輪(lun)，當電動(dong)(dong)(dong)裝置運轉時(shi)(shi)，旋轉凸輪(lun)周期(qi)性地使微動(dong)(dong)(dong)開(kai)關(guan)動(dong)(dong)(dong)作，其頻(pin)率為輸出(chu)軸轉動(dong)(dong)(dong)一圈(quan)動(dong)(dong)(dong)作一次或(huo)二次，可(ke)供閃光信號使用。

6、手(shou)(shou)-電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)切(qie)換(huan)：為半自動(dong)(dong)(dong)(dong)(dong)切(qie)換(huan)，手(shou)(shou)動(dong)(dong)(dong)(dong)(dong)時(shi)(shi)(shi)需(xu)扳動(dong)(dong)(dong)(dong)(dong)手(shou)(shou)柄(bing)切(qie)換(huan)，手(shou)(shou)動(dong)(dong)(dong)(dong)(dong)狀(zhuang)態轉(zhuan)變為電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)時(shi)(shi)(shi)則自動(dong)(dong)(dong)(dong)(dong)運行(xing)。它由手(shou)(shou)柄(bing)、切(qie)換(huan)件、直(zhi)立(li)桿、離(li)合器(qi)(qi)、壓簧(huang)等組成。需(xu)手(shou)(shou)輪(lun)(lun)操作(zuo)(zuo)時(shi)(shi)(shi)，將(jiang)手(shou)(shou)柄(bing)向手(shou)(shou)動(dong)(dong)(dong)(dong)(dong)方(fang)向推動(dong)(dong)(dong)(dong)(dong)，切(qie)換(huan)件使(shi)離(li)合器(qi)(qi)抬高，并(bing)壓迫壓簧(huang)。當手(shou)(shou)柄(bing)推到一定位置時(shi)(shi)(shi)，離(li)合器(qi)(qi)即脫(tuo)離(li)蝸(gua)輪(lun)(lun)而與手(shou)(shou)輪(lun)(lun)嚙合，同時(shi)(shi)(shi)直(zhi)立(li)桿在扭(niu)簧(huang)作(zuo)(zuo)用下(xia)直(zhi)立(li)于蝸(gua)輪(lun)(lun)端面，支撐住離(li)合器(qi)(qi)不(bu)致下(xia)落，切(qie)換(huan)完(wan)成即可(ke)放開(kai)手(shou)(shou)柄(bing)，使(shi)用手(shou)(shou)輪(lun)(lun)進行(xing)操作(zuo)(zuo)。需(xu)要(yao)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)操作(zuo)(zuo)時(shi)(shi)(shi)，電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)機將(jiang)帶動(dong)(dong)(dong)(dong)(dong)蝸(gua)輪(lun)(lun)轉(zhuan)動(dong)(dong)(dong)(dong)(dong)，支承于蝸(gua)輪(lun)(lun)端面的直(zhi)立(li)桿即倒(dao)下(xia)，在壓簧(huang)作(zuo)(zuo)用下(xia)離(li)合器(qi)(qi)迅速向蝸(gua)輪(lun)(lun)方(fang)向移(yi)動(dong)(dong)(dong)(dong)(dong)，并(bing)與蝸(gua)輪(lun)(lun)嚙合，同時(shi)(shi)(shi)與手(shou)(shou)輪(lun)(lun)脫(tuo)開(kai)，自動(dong)(dong)(dong)(dong)(dong)實現手(shou)(shou)動(dong)(dong)(dong)(dong)(dong)到電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)狀(zhuang)態的轉(zhuan)換(huan)。

四、特點：

1、重量輕，本(ben)體采(cai)用(yong)高(gao)級球(qiu)墨鑄鐵制(zhi)成(cheng)，重量較(jiao)傳統(tong)電動閘閥重量減輕約20%~30%，安(an)裝(zhuang)維修方(fang)便。

2、平底(di)(di)式閘(zha)座，傳統的(de)電(dian)動(dong)閘(zha)閥往(wang)往(wang)在通水(shui)(shui)(shui)洗管后即因外物諸如石頭，木塊(kuai)、水(shui)(shui)(shui)泥、鐵屑(xie)、雜物等淤積于閥底(di)(di)凹槽內，容易造(zao)(zao)成(cheng)無法關閉緊密(mi)而形成(cheng)漏水(shui)(shui)(shui)現象，彈性座封電(dian)動(dong)閘(zha)閥底(di)(di)部(bu)采用與水(shui)(shui)(shui)管機(ji)同的(de)平底(di)(di)設計，不(bu)易造(zao)(zao)成(cheng)雜物淤積，使流體暢通無阻(zu)。

3、整體包膠，煤礦井用電動閘閥閘板(ban)采用(yong)的(de)(de)橡膠進行整體(ti)內(nei)、外包膠，歐洲的(de)(de)橡膠硫化技術(shu)使得硫化后的(de)(de)閘板(ban)能夠保證的(de)(de)幾(ji)何(he)尺寸，且(qie)橡膠與球墨鑄(zhu)閘板(ban)接(jie)著(zhu)牢(lao)靠(kao)，不易(yi)脫落及(ji)彈(dan)性記憶佳。

4、精鑄(zhu)閥(fa)(fa)(fa)體，閥(fa)(fa)(fa)體采用鑄(zhu)造，的幾(ji)何尺寸(cun)使得閥(fa)(fa)(fa)體內部無需任(ren)何精加工即可保證閥(fa)(fa)(fa)門(men)的密封性。

五、注意事項(xiang)：

1、手輪、手柄及傳(chuan)動機構均(jun)不允(yun)許作起吊用(yong)，并(bing)嚴禁碰撞。

2、雙閘(zha)板電動(dong)閘(zha)閥(fa)(fa)應(ying)垂直安(an)裝(zhuang)（即閥(fa)(fa)桿處于垂直位置(zhi)，手輪在(zai)頂部)。

3、帶有旁(pang)通閥(fa)的電動閘(zha)閥(fa)在(zai)開(kai)(kai)啟(qi)前應先打開(kai)(kai)旁(pang)通閥(fa)（以平(ping)衡進(jin)出口的壓差(cha)及(ji)減小(xiao)開(kai)(kai)啟(qi)力)。

4、帶(dai)傳動機構的電動閘閥，按產品(pin)使用說明書的規定安裝。

5、如果(guo)閥門(men)經(jing)常開關使(shi)用(yong)，每月至(zhi)少潤(run)滑一次。

6、電動閘閥(fa)只(zhi)供全開、全關(guan)各類(lei)管路(lu)或設備上的介質運行之用(yong)，不(bu)允許作節流(liu)用(yong)。

7、帶手輪或(huo)手柄的電動閘閥(fa)，操作時(shi)不(bu)得再增加輔助杠杠（若遇密封(feng)(feng)不(bu)嚴，則(ze)應檢查(cha)修復密封(feng)(feng)面或(huo)其(qi)他零(ling)件(jian)）。手輪、手柄順(shun)時(shi)針旋轉為關閉，反之(zhi)則(ze)開啟。帶傳(chuan)動機構(gou)的電動閘閥(fa)應按產品(pin)使(shi)用說明(ming)書的規(gui)定使(shi)用。