濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)以(yi)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)作為過濾(lv)(lv)(lv)元件所組成或(huo)采(cai)用脈沖(chong)噴吹的除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)按(an)安(an)裝方式分(fen)(fen)(fen)，可(ke)(ke)以(yi)分(fen)(fen)(fen)為斜插式，側(ce)裝式，吊裝式，上裝式。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)按(an)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)材料分(fen)(fen)(fen)，可(ke)(ke)以(yi)分(fen)(fen)(fen)為長(chang)纖維聚酯濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)，復合纖維濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)，防靜電濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)，阻(zu)燃濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)，覆(fu)膜濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)，納米濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)等。
濾(lv)(lv)筒(tong)式除(chu)塵器(qi)早在(zai)20世紀70年代就(jiu)已經在(zai)日本和歐美一些國(guo)家出現，具有(you)體(ti)積小，效(xiao)(xiao)率高，投資省，易(yi)維(wei)護(hu)等(deng)優點，但因其設(she)備容量(liang)小，難組合成大(da)風量(liang)設(she)備，過濾(lv)(lv)風速(su)偏低，應用(yong)范圍窄(zhai)，僅在(zai)糧食、焊接(jie)等(deng)行業(ye)(ye)(ye)應用(yong)，所以(yi)多年來(lai)未能大(da)量(liang)推廣。近年來(lai)，隨(sui)著(zhu)新技術(shu)、新材料不斷地(di)(di)發展(zhan)，以(yi)日本，美國(guo)的公(gong)司(si)為代表(biao)，對除(chu)塵器(qi)的結構和濾(lv)(lv)料進行了改進，使(shi)得(de)濾(lv)(lv)筒(tong)除(chu)塵器(qi)廣泛地(di)(di)應用(yong)于水泥、鋼鐵、電(dian)力(li)、食品(pin)、冶金、化工等(deng)工業(ye)(ye)(ye)領域，整體(ti)容量(liang)增加數(shu)倍，成為過濾(lv)(lv)面積>2000m2大(da)型(xing)除(chu)塵器(qi)（GB6719－86類），是解決傳(chuan)統除(chu)塵器(qi)對超細粉塵收集難、過濾(lv)(lv)風速(su)高、清灰效(xiao)(xiao)果差(cha)、濾(lv)(lv)袋易(yi)磨損破漏(lou)、運行成本高的上(shang)好方(fang)案，和市場上(shang)現有(you)各種袋式、靜(jing)電(dian)除(chu)塵器(qi)相比具有(you)有(you)效(xiao)(xiao)過濾(lv)(lv)面積大(da)、壓差(cha)低、低排(pai)放、體(ti)積小、使(shi)用(yong)壽命(ming)長(chang)等(deng)特(te)點，成為工業(ye)(ye)(ye)除(chu)塵器(qi)發展(zhan)的新方(fang)向。
濾(lv)筒(tong)式除(chu)塵(chen)器的結構是由進風管、排風管、箱(xiang)體、灰斗、清(qing)灰裝置(zhi)、導流(liu)(liu)裝置(zhi)、氣(qi)流(liu)(liu)分(fen)流(liu)(liu)分(fen)布板、濾(lv)筒(tong)及電控裝置(zhi)組成，類似氣(qi)箱(xiang)脈(mo)沖袋(dai)除(chu)塵(chen)結構。
濾筒(tong)在(zai)除塵(chen)器中的布(bu)(bu)(bu)置很重要，既可(ke)以垂直布(bu)(bu)(bu)置在(zai)箱體花板上(shang)(shang)(shang)，也(ye)可(ke)以傾斜布(bu)(bu)(bu)置 在(zai)花板上(shang)(shang)(shang)，從清灰效果看，垂直布(bu)(bu)(bu)置較為(wei)合理(li)。花板下部為(wei)過濾室，上(shang)(shang)(shang)部為(wei)氣箱脈沖室。在(zai)除塵(chen)器入(ru)口(kou)處(chu)裝有氣流(liu)分布(bu)(bu)(bu)板。
含塵(chen)氣(qi)(qi)(qi)體進入除塵(chen)器灰斗(dou)后，由于(yu)氣(qi)(qi)(qi)流(liu)斷面(mian)突然擴(kuo)大及氣(qi)(qi)(qi)流(liu)分(fen)布板(ban)作(zuo)用(yong)(yong)，氣(qi)(qi)(qi)流(liu)中一部(bu)分(fen)粗大顆粒在(zai)動和慣性力作(zuo)用(yong)(yong)下(xia)沉(chen)降在(zai)灰斗(dou)；粒度(du)細、密度(du)小(xiao)的(de)塵(chen)粒進入濾塵(chen)室后，通過(guo)布朗擴(kuo)散和篩(shai)濾等組合效應，使粉塵(chen)沉(chen)積(ji)在(zai)濾料表面(mian)上，凈(jing)化后的(de)氣(qi)(qi)(qi)體進入凈(jing)氣(qi)(qi)(qi)室由排氣(qi)(qi)(qi)管經風機排出。
濾(lv)(lv)(lv)筒式除塵器的(de)(de)阻力(li)隨濾(lv)(lv)(lv)料表(biao)面(mian)粉(fen)塵層厚度的(de)(de)增(zeng)加而增(zeng)大。阻力(li)達到某一(yi)(yi)規(gui)定值時(shi)進行清(qing)灰(hui)。此(ci)時(shi)PLC程序控制脈(mo)(mo)沖(chong)閥(fa)的(de)(de)啟閉，首先一(yi)(yi)分室(shi)提升閥(fa)關閉，將(jiang)過濾(lv)(lv)(lv)氣流截斷，然后電(dian)磁脈(mo)(mo)沖(chong)閥(fa)開(kai)(kai)(kai)啟，壓(ya)縮空氣以及(ji)短的(de)(de)時(shi)間在上箱(xiang)體內迅速膨脹(zhang)，涌入濾(lv)(lv)(lv)筒，使濾(lv)(lv)(lv)筒膨脹(zhang)變形產生振動，并在逆向氣流沖(chong)刷(shua)的(de)(de)作用下，附著在濾(lv)(lv)(lv)袋外表(biao)面(mian)上的(de)(de)粉(fen)塵被剝離(li)落入灰(hui)斗中。清(qing)灰(hui)完(wan)畢(bi)后，電(dian)磁脈(mo)(mo)沖(chong)閥(fa)關閉，提升閥(fa)打開(kai)(kai)(kai)，該室(shi)又恢(hui)復(fu)過濾(lv)(lv)(lv)狀態。清(qing)灰(hui)各室(shi)依次進行，從(cong)一(yi)(yi)室(shi)清(qing)灰(hui)開(kai)(kai)(kai)始至下一(yi)(yi)次清(qing)灰(hui)開(kai)(kai)(kai)始為一(yi)(yi)個清(qing)灰(hui)周期。脫落的(de)(de)粉(fen)塵掉(diao)入灰(hui)斗內通過缷灰(hui)閥(fa)排出。
在此過(guo)程中(zhong)必(bi)須定期對(dui)濾筒進行更換和(he)清洗，以確(que)保過(guo)濾效果和(he)精(jing)度，因為在過(guo)濾過(guo)程中(zhong)粉塵除了被阻(zu)(zu)隔外還有部分會沉積于濾料表面，增大阻(zu)(zu)力，所以一般的正確(que)更換時間是三(san)至五(wu)個月！
