濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)以(yi)(yi)(yi)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)作(zuo)為過(guo)濾(lv)(lv)(lv)元(yuan)件所組成或采用脈(mo)沖噴吹的除(chu)(chu)塵(chen)(chen)(chen)器(qi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)按安裝方式(shi)(shi)分(fen)，可(ke)以(yi)(yi)(yi)分(fen)為斜(xie)插式(shi)(shi)，側(ce)裝式(shi)(shi)，吊裝式(shi)(shi)，上(shang)裝式(shi)(shi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)按濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)材料分(fen)，可(ke)以(yi)(yi)(yi)分(fen)為長纖維聚酯濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)，復合(he)纖維濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)，防靜電濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)，阻燃(ran)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)，覆膜濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)，納米(mi)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)等。
濾(lv)(lv)筒(tong)式(shi)除(chu)塵(chen)(chen)器(qi)早在(zai)20世紀70年代就已(yi)經在(zai)日本和(he)(he)歐(ou)美(mei)(mei)一些國(guo)家出現，具有(you)(you)(you)體(ti)積(ji)小(xiao)，效(xiao)率高(gao)，投資省，易(yi)維護等優點，但因其設(she)備容量小(xiao)，難組合成大(da)風(feng)(feng)量設(she)備，過濾(lv)(lv)風(feng)(feng)速偏低，應用(yong)(yong)范圍窄，僅在(zai)糧食、焊接等行(xing)業(ye)應用(yong)(yong)，所以(yi)多年來未能大(da)量推廣。近年來，隨(sui)著新技術、新材料不斷地發展，以(yi)日本，美(mei)(mei)國(guo)的(de)公司為(wei)(wei)代表，對除(chu)塵(chen)(chen)器(qi)的(de)結構(gou)和(he)(he)濾(lv)(lv)料進行(xing)了改進，使得濾(lv)(lv)筒(tong)除(chu)塵(chen)(chen)器(qi)廣泛地應用(yong)(yong)于水泥、鋼鐵、電(dian)力、食品、冶金(jin)、化(hua)工(gong)(gong)(gong)等工(gong)(gong)(gong)業(ye)領域，整(zheng)體(ti)容量增(zeng)加(jia)數倍，成為(wei)(wei)過濾(lv)(lv)面積(ji)>2000m2大(da)型(xing)除(chu)塵(chen)(chen)器(qi)（GB6719－86類），是解決傳(chuan)統除(chu)塵(chen)(chen)器(qi)對超細(xi)粉塵(chen)(chen)收集難、過濾(lv)(lv)風(feng)(feng)速高(gao)、清(qing)灰效(xiao)果差(cha)、濾(lv)(lv)袋(dai)易(yi)磨損破(po)漏(lou)、運行(xing)成本高(gao)的(de)上(shang)(shang)好方(fang)(fang)案，和(he)(he)市場上(shang)(shang)現有(you)(you)(you)各(ge)種(zhong)袋(dai)式(shi)、靜電(dian)除(chu)塵(chen)(chen)器(qi)相比具有(you)(you)(you)有(you)(you)(you)效(xiao)過濾(lv)(lv)面積(ji)大(da)、壓差(cha)低、低排放、體(ti)積(ji)小(xiao)、使用(yong)(yong)壽命長等特點，成為(wei)(wei)工(gong)(gong)(gong)業(ye)除(chu)塵(chen)(chen)器(qi)發展的(de)新方(fang)(fang)向。
濾筒式除塵(chen)器的結構(gou)(gou)是由(you)進風(feng)(feng)管、排風(feng)(feng)管、箱體、灰(hui)斗、清灰(hui)裝(zhuang)置、導流(liu)裝(zhuang)置、氣(qi)流(liu)分(fen)流(liu)分(fen)布(bu)板、濾筒及電控(kong)裝(zhuang)置組成，類(lei)似氣(qi)箱脈沖袋除塵(chen)結構(gou)(gou)。
濾(lv)筒在除塵(chen)器(qi)中的(de)布置(zhi)(zhi)(zhi)很重要，既可以(yi)垂直(zhi)布置(zhi)(zhi)(zhi)在箱(xiang)體花板上，也可以(yi)傾(qing)斜(xie)布置(zhi)(zhi)(zhi) 在花板上，從清灰效(xiao)果看，垂直(zhi)布置(zhi)(zhi)(zhi)較為(wei)(wei)(wei)合理。花板下部為(wei)(wei)(wei)過濾(lv)室，上部為(wei)(wei)(wei)氣(qi)箱(xiang)脈沖室。在除塵(chen)器(qi)入口(kou)處裝(zhuang)有氣(qi)流分布板。
含(han)塵(chen)(chen)氣(qi)體進入(ru)除塵(chen)(chen)器(qi)灰斗后(hou)，由于氣(qi)流斷面(mian)突然擴大及氣(qi)流分布(bu)板作用，氣(qi)流中一(yi)部分粗大顆粒在(zai)動和(he)慣性力(li)作用下沉降(jiang)在(zai)灰斗；粒度細、密度小的塵(chen)(chen)粒進入(ru)濾塵(chen)(chen)室后(hou)，通過布(bu)朗擴散和(he)篩濾等(deng)組(zu)合(he)效(xiao)應(ying)，使粉塵(chen)(chen)沉積在(zai)濾料表面(mian)上(shang)，凈(jing)化后(hou)的氣(qi)體進入(ru)凈(jing)氣(qi)室由排(pai)氣(qi)管經風(feng)機排(pai)出。
濾(lv)(lv)(lv)(lv)筒式除塵器(qi)的(de)(de)(de)阻力(li)隨(sui)濾(lv)(lv)(lv)(lv)料表面粉(fen)塵層厚度的(de)(de)(de)增(zeng)加而增(zeng)大。阻力(li)達到某一(yi)規(gui)定(ding)值時進行清(qing)灰(hui)。此時PLC程序控制脈(mo)(mo)沖閥(fa)(fa)的(de)(de)(de)啟閉，首先一(yi)分室(shi)提(ti)升閥(fa)(fa)關閉，將過濾(lv)(lv)(lv)(lv)氣流截斷，然后電(dian)磁脈(mo)(mo)沖閥(fa)(fa)開啟，壓縮空氣以及短的(de)(de)(de)時間在上箱體內迅(xun)速膨(peng)脹(zhang)(zhang)，涌入(ru)濾(lv)(lv)(lv)(lv)筒，使濾(lv)(lv)(lv)(lv)筒膨(peng)脹(zhang)(zhang)變形產生振動，并在逆向氣流沖刷的(de)(de)(de)作用下，附著在濾(lv)(lv)(lv)(lv)袋外表面上的(de)(de)(de)粉(fen)塵被剝離落入(ru)灰(hui)斗(dou)中。清(qing)灰(hui)完(wan)畢(bi)后，電(dian)磁脈(mo)(mo)沖閥(fa)(fa)關閉，提(ti)升閥(fa)(fa)打開，該室(shi)又恢復過濾(lv)(lv)(lv)(lv)狀態。清(qing)灰(hui)各室(shi)依次進行，從一(yi)室(shi)清(qing)灰(hui)開始至(zhi)下一(yi)次清(qing)灰(hui)開始為一(yi)個清(qing)灰(hui)周期。脫落的(de)(de)(de)粉(fen)塵掉入(ru)灰(hui)斗(dou)內通過缷(xie)灰(hui)閥(fa)(fa)排出。
在(zai)此過(guo)程中(zhong)必須(xu)定期對濾筒進(jin)行更換和清洗(xi)，以確保過(guo)濾效果和精度，因為(wei)在(zai)過(guo)濾過(guo)程中(zhong)粉塵(chen)除(chu)了被阻隔外還有部分(fen)會沉(chen)積于濾料表(biao)面，增大阻力，所以一(yi)般(ban)的正確更換時間是三至五個月(yue)！
