回轉式烘干機是一種工業設備,應用于肥料、冶金、化工、礦山、電力等行業。
工(gong)作(zuo)原理
回轉烘干機是一種傾斜安裝的回轉式鋼筒體,斜度為3-6%,轉速為5-9r/min。
筒(tong)(tong)體(ti)(ti)上裝有(you)輪帶(dai)和(he)大(da)齒圈(quan)。筒(tong)(tong)體(ti)(ti)依靠輪帶(dai)支撐在托(tuo)輪上。驅動(dong)(dong)裝置端(duan)的輪帶(dai)一(yi)側(ce)裝有(you)擋輪,以限制筒(tong)(tong)體(ti)(ti)沿傾斜(xie)方向(xiang)的竄動(dong)(dong)。在烘干機設備底(di)部(bu)溫(wen)度達400℃-800℃狀態(tai)下,物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)由(you)提(ti)升(sheng)機或者皮帶(dai)機從喂料(liao)(liao)(liao)(liao)口喂入烘干機筒(tong)(tong)體(ti)(ti)通(tong)過(guo)大(da)齒圈(quan)在驅動(dong)(dong)裝置作用下回轉,由(you)于筒(tong)(tong)體(ti)(ti)具有(you)一(yi)定的斜(xie)度且(qie)連續不斷(duan)(duan)地回轉,使得物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)在重力的作用下從高(gao)(gao)端(duan)向(xiang)低端(duan)移動(dong)(dong),在移動(dong)(dong)的過(guo)程(cheng)中逐漸與(yu)熱(re)源產生(sheng)的高(gao)(gao)溫(wen)氣(qi)體(ti)(ti)進行熱(re)交(jiao)換。烘干后(hou)的物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)從低端(duan)卸出,物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)所含水(shui)(shui)份(fen)蒸發(fa)后(hou)被氣(qi)流帶(dai)走,物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)在烘干機內停(ting)留(liu)時(shi)間約為13-20min,可(ke)根據根據物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)含水(shui)(shui)率進行不同設計。熱(re)氣(qi)體(ti)(ti)由(you)熱(re)風爐生(sheng)成,在烘干機內部(bu)物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)相接觸,通(tong)過(guo)熱(re)傳導(dao),對流,輻射等多(duo)種(zhong)方式將熱(re)量傳遞給物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao),從而使物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)溫(wen)度不斷(duan)(duan)升(sheng)高(gao)(gao),水(shui)(shui)分(fen)不斷(duan)(duan)被蒸發(fa),符合水(shui)(shui)分(fen)要(yao)求(qiu)的物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)從出料(liao)(liao)(liao)(liao)端(duan)出料(liao)(liao)(liao)(liao)罩下部(bu)出口卸料(liao)(liao)(liao)(liao),帶(dai)著水(shui)(shui)蒸汽的氣(qi)體(ti)(ti)經除塵器等環保設施處理后(hou)達到環保要(yao)求(qiu)排放(fang)標的煙氣(qi)由(you)引風機抽出經煙囪排空(kong)。
適用范圍
回(hui)轉式(shi)烘(hong)干(gan)(gan)機在傳(chuan)統單(dan)筒(tong)回(hui)轉式(shi)烘(hong)干(gan)(gan)機結構的(de)基礎(chu)上進行(xing)了大(da)幅度的(de)突(tu)破(po)和創新。從烘(hong)干(gan)(gan)機理上看,物(wu)料(liao)(liao)與(yu)熱氣流的(de)交換更加充分、更為科學(xue)合理。適(shi)應(ying)粘土、石(shi)膏、煤、礦渣、煤矸(gan)石(shi)、混合料(liao)(liao)、干(gan)(gan)混砂漿、黃砂、鐵粉等(deng)各種(zhong)原(yuan)材料(liao)(liao)的(de)烘(hong)干(gan)(gan),也適(shi)用于磷(lin)肥、復合肥生產(chan)中原(yuan)料(liao)(liao)及冶金、化工(gong)等(deng)行(xing)業(ye)的(de)各種(zhong)散(san)狀物(wu)料(liao)(liao)的(de)烘(hong)干(gan)(gan)。