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。
工作原理
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。
筒體(ti)(ti)(ti)(ti)(ti)上裝(zhuang)(zhuang)有輪(lun)帶(dai)(dai)和大齒(chi)圈。筒體(ti)(ti)(ti)(ti)(ti)依(yi)靠輪(lun)帶(dai)(dai)支撐在(zai)(zai)托(tuo)輪(lun)上。驅(qu)動(dong)(dong)(dong)裝(zhuang)(zhuang)置端(duan)的(de)(de)輪(lun)帶(dai)(dai)一(yi)側裝(zhuang)(zhuang)有擋輪(lun),以限(xian)制筒體(ti)(ti)(ti)(ti)(ti)沿傾斜方(fang)向的(de)(de)竄動(dong)(dong)(dong)。在(zai)(zai)烘(hong)(hong)(hong)干(gan)機(ji)設備底(di)部溫(wen)度達400℃-800℃狀態下(xia)(xia),物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)由提升機(ji)或(huo)者(zhe)皮帶(dai)(dai)機(ji)從(cong)(cong)(cong)喂(wei)料(liao)口(kou)喂(wei)入(ru)烘(hong)(hong)(hong)干(gan)機(ji)筒體(ti)(ti)(ti)(ti)(ti)通過(guo)大齒(chi)圈在(zai)(zai)驅(qu)動(dong)(dong)(dong)裝(zhuang)(zhuang)置作用(yong)下(xia)(xia)回轉(zhuan),由于筒體(ti)(ti)(ti)(ti)(ti)具有一(yi)定的(de)(de)斜度且連續不斷地(di)回轉(zhuan),使(shi)(shi)得物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)重(zhong)力的(de)(de)作用(yong)下(xia)(xia)從(cong)(cong)(cong)高(gao)(gao)端(duan)向低(di)端(duan)移動(dong)(dong)(dong),在(zai)(zai)移動(dong)(dong)(dong)的(de)(de)過(guo)程中逐漸與(yu)熱源產生的(de)(de)高(gao)(gao)溫(wen)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)進行(xing)熱交換。烘(hong)(hong)(hong)干(gan)后(hou)(hou)的(de)(de)物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)從(cong)(cong)(cong)低(di)端(duan)卸(xie)出,物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)所含水(shui)(shui)份(fen)蒸發后(hou)(hou)被(bei)氣(qi)(qi)(qi)流帶(dai)(dai)走(zou),物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)烘(hong)(hong)(hong)干(gan)機(ji)內停留時間約為13-20min,可根(gen)據(ju)根(gen)據(ju)物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)含水(shui)(shui)率進行(xing)不同設計。熱氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)由熱風爐生成(cheng),在(zai)(zai)烘(hong)(hong)(hong)干(gan)機(ji)內部物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)相接觸(chu),通過(guo)熱傳(chuan)導(dao),對(dui)流,輻射等多種方(fang)式將熱量傳(chuan)遞給物(wu)(wu)(wu)(wu)(wu)(wu)料(liao),從(cong)(cong)(cong)而使(shi)(shi)物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)溫(wen)度不斷升高(gao)(gao),水(shui)(shui)分不斷被(bei)蒸發,符合(he)水(shui)(shui)分要求的(de)(de)物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)從(cong)(cong)(cong)出料(liao)端(duan)出料(liao)罩下(xia)(xia)部出口(kou)卸(xie)料(liao),帶(dai)(dai)著水(shui)(shui)蒸汽的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)經除塵器等環(huan)保(bao)設施(shi)處理后(hou)(hou)達到環(huan)保(bao)要求排放標的(de)(de)煙(yan)氣(qi)(qi)(qi)由引風機(ji)抽出經煙(yan)囪排空。
適用范圍
回轉式烘(hong)(hong)干(gan)(gan)機(ji)在傳統(tong)單筒回轉式烘(hong)(hong)干(gan)(gan)機(ji)結構的(de)基(ji)礎上進行了大幅(fu)度的(de)突破(po)和創新。從烘(hong)(hong)干(gan)(gan)機(ji)理上看,物(wu)(wu)料(liao)與(yu)熱氣流的(de)交換(huan)更加充分、更為科學(xue)合理。適應粘(zhan)土、石(shi)膏、煤(mei)、礦渣、煤(mei)矸石(shi)、混合料(liao)、干(gan)(gan)混砂漿(jiang)、黃砂、鐵粉等(deng)各(ge)種(zhong)原材料(liao)的(de)烘(hong)(hong)干(gan)(gan),也(ye)適用于磷肥、復合肥生產中原料(liao)及冶金、化工等(deng)行業的(de)各(ge)種(zhong)散狀物(wu)(wu)料(liao)的(de)烘(hong)(hong)干(gan)(gan)。