防(fang)爆(bao)電動(dong)(dong)球(qiu)閥主(zhu)要(yao)由(you)防(fang)爆(bao)電動(dong)(dong)執行器和(he)球(qiu)閥組(zu)成。是一種應用(yong)于易燃易爆(bao)場所，主(zhu)要(yao)控制的(de)是液體(ti)和(he)氣體(ti)的(de)流(liu)量。采用(yong)電動(dong)(dong)機(ji)作動(dong)(dong)力元件(jian)，驅動(dong)(dong)球(qiu)體(ti)旋轉實現(xian)閘板(ban)的(de)啟(qi)閉。它適用(yong)于諸如石(shi)化、化工、制藥等(deng)領域。

防爆電動球閥的工作原理是：

當驅動(dong)電(dian)機接收到控制(zhi)系統(tong)的(de)信(xin)號后，會帶動(dong)減速器(qi)轉動(dong)，進(jin)而驅動(dong)球(qiu)體(ti)旋轉，以(yi)達到控制(zhi)流(liu)體(ti)流(liu)通的(de)目的(de)。同時(shi)，位置(zhi)控制(zhi)器(qi)和(he)行程控制(zhi)器(qi)可以(yi)精確(que)控制(zhi)球(qiu)體(ti)的(de)旋轉角度和(he)位置(zhi)，確(que)保(bao)流(liu)體(ti)流(liu)量和(he)方向的(de)準確(que)控制(zhi)。

電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)防爆球(qiu)(qiu)閥的(de)關(guan)閉件是一個帶(dai)孔的(de)球(qiu)(qiu)體(ti)（或部分球(qiu)(qiu)），球(qiu)(qiu)體(ti)隨閥桿轉(zhuan)動(dong)(dong)，工作以(yi)電(dian)(dian)(dian)(dian)(dian)力為(wei)能(neng)源，由電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)執行器電(dian)(dian)(dian)(dian)(dian)機正反(fan)轉(zhuan)帶(dai)動(dong)(dong)閥桿隨球(qiu)(qiu)芯旋轉(zhuan)0-90°即(ji)可(ke)全關(guan)0度全開90度，該閥一般適用于兩位(wei)切(qie)斷(duan)、調節的(de)場合。電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)執行機構(gou)內置(zhi)伺服(fu)系統，無須另配伺服(fu)放(fang)大器，開關(guan)型為(wei)通(tong)電(dian)(dian)(dian)(dian)(dian)打開、通(tong)電(dian)(dian)(dian)(dian)(dian)關(guan)閉。而電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)防爆調節型球(qiu)(qiu)閥為(wei)輸入4-20mA信(xin)號(hao)及220VAC電(dian)(dian)(dian)(dian)(dian)源即(ji)可(ke)控(kong)*運轉(zhuan)，調節型可(ke)由PLC標準(zhun)信(xin)號(hao)直接控(kong)*，也可(ke)以(yi)通(tong)過(guo)二次儀表輸出0-10V等電(dian)(dian)(dian)(dian)(dian)流電(dian)(dian)(dian)(dian)(dian)壓信(xin)號(hao)實(shi)現*準(zhun)調節。