沙子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(yuan)理
沙子烘干(gan)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)上裝有(you)輪(lun)帶(dai)和大(da)齒圈。筒(tong)(tong)體(ti)依靠(kao)輪(lun)帶(dai)支撐在托輪(lun)上。驅(qu)動(dong)(dong)裝置端的輪(lun)帶(dai)一側裝有(you)擋輪(lun),以限(xian)制筒(tong)(tong)體(ti)沿傾(qing)斜方(fang)向的竄動(dong)(dong)。在烘(hong)(hong)干(gan)機(ji)設備(bei)底部(bu)溫度達(da)400℃-800℃狀態下,物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)由提升機(ji)或者皮(pi)帶(dai)機(ji)從(cong)(cong)喂料(liao)(liao)(liao)(liao)口喂入烘(hong)(hong)干(gan)機(ji)筒(tong)(tong)體(ti)通過(guo)大(da)齒圈在驅(qu)動(dong)(dong)裝置作(zuo)用下回轉,由于筒(tong)(tong)體(ti)具有(you)一定(ding)的斜度且連續不(bu)斷地回轉,使(shi)得物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)在重力的作(zuo)用下從(cong)(cong)高(gao)端向低(di)端移動(dong)(dong),在移動(dong)(dong)的過(guo)程中逐漸(jian)與熱(re)(re)(re)(re)源(yuan)產生的高(gao)溫氣體(ti)進(jin)行(xing)熱(re)(re)(re)(re)交(jiao)換。烘(hong)(hong)干(gan)后(hou)的物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)從(cong)(cong)低(di)端卸出,物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)所含(han)水份蒸發后(hou)被氣流帶(dai)走,物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)在烘(hong)(hong)干(gan)機(ji)內停留(liu)時間(jian)約(yue)為13-20min,可根(gen)據根(gen)據物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)含(han)水率進(jin)行(xing)不(bu)同設計。熱(re)(re)(re)(re)氣體(ti)由熱(re)(re)(re)(re)風爐生成,在烘(hong)(hong)干(gan)機(ji)內部(bu)物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)相接觸,通過(guo)熱(re)(re)(re)(re)傳導,對(dui)流,輻射等(deng)多種方(fang)式(shi)將熱(re)(re)(re)(re)量傳遞給(gei)物(wu)(wu)(wu)料(liao)(liao)(liao)(liao),從(cong)(cong)而(er)使(shi)物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)溫度不(bu)斷升高(gao),水分不(bu)斷被蒸發,符合水分要求(qiu)的物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)從(cong)(cong)出料(liao)(liao)(liao)(liao)端出料(liao)(liao)(liao)(liao)罩下部(bu)出口卸料(liao)(liao)(liao)(liao),帶(dai)著水蒸汽的氣體(ti)經除塵(chen)器(qi)等(deng)環(huan)保設施處理后(hou)達(da)到環(huan)保要求(qiu)排放標的煙(yan)氣由引風機(ji)抽出經煙(yan)囪(cong)排空。
適用范圍
沙子烘干(gan)機(ji)在傳統單筒回轉式烘干機結構的基礎上進行了大幅度的突破和創新。從烘干機理上看,物料與熱氣流的交換更加充分。適應粘土、石膏、煤、礦渣、煤矸石、混合料、干混砂漿、黃砂、鐵粉等各種原材料的烘干,也適用于磷肥、復合肥生產中原料及冶金、化工等行業的各種散狀物料的烘干。