濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)以(yi)(yi)濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)作為過濾(lv)(lv)元件所組成(cheng)或采(cai)用脈沖噴吹(chui)的除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)。 濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)按安(an)裝方式(shi)分，可以(yi)(yi)分為斜插(cha)式(shi)，側裝式(shi)，吊裝式(shi)，上裝式(shi)。 濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)按濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)材料分，可以(yi)(yi)分為長纖(xian)維聚酯濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)，復合(he)纖(xian)維濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)，防靜(jing)電濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)，阻(zu)燃濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)，覆(fu)膜濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)，納米濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)等(deng)。
濾(lv)筒(tong)式(shi)除(chu)塵(chen)(chen)(chen)器(qi)早在20世(shi)紀70年(nian)代就已經在日(ri)本(ben)和歐美一些(xie)國家出現，具有(you)體積小(xiao)，效率高，投資省，易維(wei)護等優點，但因其(qi)設(she)(she)備容量(liang)小(xiao)，難組合成(cheng)(cheng)大(da)(da)風(feng)量(liang)設(she)(she)備，過(guo)濾(lv)風(feng)速偏低(di)，應用(yong)(yong)范圍窄(zhai)，僅在糧食、焊接等行(xing)業(ye)應用(yong)(yong)，所以多年(nian)來未能大(da)(da)量(liang)推廣。近年(nian)來，隨著新(xin)(xin)技術、新(xin)(xin)材料不斷地發(fa)展，以日(ri)本(ben)，美國的(de)公司為代表(biao)，對(dui)除(chu)塵(chen)(chen)(chen)器(qi)的(de)結構和濾(lv)料進行(xing)了改進，使得濾(lv)筒(tong)除(chu)塵(chen)(chen)(chen)器(qi)廣泛地應用(yong)(yong)于(yu)水泥、鋼鐵、電力(li)、食品、冶金、化工(gong)等工(gong)業(ye)領(ling)域，整體容量(liang)增加數倍，成(cheng)(cheng)為過(guo)濾(lv)面積>2000m2大(da)(da)型(xing)除(chu)塵(chen)(chen)(chen)器(qi)（GB6719－86類），是(shi)解決傳統(tong)除(chu)塵(chen)(chen)(chen)器(qi)對(dui)超細粉塵(chen)(chen)(chen)收集(ji)難、過(guo)濾(lv)風(feng)速高、清灰效果差(cha)、濾(lv)袋易磨損破漏(lou)、運行(xing)成(cheng)(cheng)本(ben)高的(de)上(shang)好方(fang)案，和市場上(shang)現有(you)各種袋式(shi)、靜(jing)電除(chu)塵(chen)(chen)(chen)器(qi)相比(bi)具有(you)有(you)效過(guo)濾(lv)面積大(da)(da)、壓(ya)差(cha)低(di)、低(di)排放、體積小(xiao)、使用(yong)(yong)壽命(ming)長等特點，成(cheng)(cheng)為工(gong)業(ye)除(chu)塵(chen)(chen)(chen)器(qi)發(fa)展的(de)新(xin)(xin)方(fang)向。
濾筒(tong)(tong)式(shi)除(chu)塵器的結構是(shi)由(you)進風管、排風管、箱體、灰斗、清灰裝置、導流(liu)(liu)裝置、氣流(liu)(liu)分流(liu)(liu)分布板、濾筒(tong)(tong)及電控裝置組成(cheng)，類(lei)似(si)氣箱脈(mo)沖(chong)袋除(chu)塵結構。
濾筒(tong)在除(chu)塵(chen)器(qi)中(zhong)的布(bu)置(zhi)很重要，既可以垂直布(bu)置(zhi)在箱(xiang)體花(hua)(hua)板上(shang)，也(ye)可以傾(qing)斜布(bu)置(zhi) 在花(hua)(hua)板上(shang)，從清灰效果(guo)看，垂直布(bu)置(zhi)較為(wei)合理。花(hua)(hua)板下部為(wei)過濾室，上(shang)部為(wei)氣(qi)箱(xiang)脈沖(chong)室。在除(chu)塵(chen)器(qi)入口處裝有氣(qi)流(liu)分布(bu)板。
含(han)塵(chen)(chen)氣(qi)(qi)體進(jin)入除塵(chen)(chen)器灰斗(dou)后(hou)(hou)，由(you)于氣(qi)(qi)流(liu)斷面突然擴大及(ji)氣(qi)(qi)流(liu)分(fen)布板作用，氣(qi)(qi)流(liu)中一(yi)部分(fen)粗大顆粒(li)在(zai)動和慣性力作用下(xia)沉(chen)降在(zai)灰斗(dou)；粒(li)度(du)細、密度(du)小的(de)(de)塵(chen)(chen)粒(li)進(jin)入濾塵(chen)(chen)室(shi)后(hou)(hou)，通過布朗擴散和篩濾等組(zu)合效應，使(shi)粉塵(chen)(chen)沉(chen)積在(zai)濾料表面上，凈化后(hou)(hou)的(de)(de)氣(qi)(qi)體進(jin)入凈氣(qi)(qi)室(shi)由(you)排氣(qi)(qi)管經風(feng)機排出(chu)。
濾(lv)筒式除塵器的(de)阻(zu)力(li)(li)隨濾(lv)料表面粉塵層厚度的(de)增加而增大。阻(zu)力(li)(li)達到(dao)某一規定值時進行清(qing)灰(hui)(hui)。此時PLC程序控制脈(mo)沖(chong)閥(fa)(fa)(fa)的(de)啟閉，首(shou)先一分室提(ti)(ti)升閥(fa)(fa)(fa)關閉，將過(guo)(guo)濾(lv)氣流(liu)截斷，然后(hou)電(dian)磁脈(mo)沖(chong)閥(fa)(fa)(fa)開(kai)啟，壓縮空氣以及短的(de)時間在(zai)(zai)上箱體內(nei)迅速膨脹，涌入(ru)濾(lv)筒，使濾(lv)筒膨脹變(bian)形(xing)產生振動(dong)，并在(zai)(zai)逆向(xiang)氣流(liu)沖(chong)刷的(de)作用下，附著在(zai)(zai)濾(lv)袋(dai)外(wai)表面上的(de)粉塵被剝離落入(ru)灰(hui)(hui)斗(dou)中。清(qing)灰(hui)(hui)完畢后(hou)，電(dian)磁脈(mo)沖(chong)閥(fa)(fa)(fa)關閉，提(ti)(ti)升閥(fa)(fa)(fa)打開(kai)，該(gai)室又恢復過(guo)(guo)濾(lv)狀(zhuang)態。清(qing)灰(hui)(hui)各室依次(ci)進行，從一室清(qing)灰(hui)(hui)開(kai)始至下一次(ci)清(qing)灰(hui)(hui)開(kai)始為一個清(qing)灰(hui)(hui)周期。脫落的(de)粉塵掉入(ru)灰(hui)(hui)斗(dou)內(nei)通過(guo)(guo)缷灰(hui)(hui)閥(fa)(fa)(fa)排出(chu)。
在此過程中(zhong)必須定期對濾(lv)筒進行(xing)更(geng)換(huan)和(he)清洗(xi)，以(yi)確保(bao)過濾(lv)效(xiao)果和(he)精(jing)度，因為在過濾(lv)過程中(zhong)粉(fen)塵除了被阻隔外還有部(bu)分會沉積于濾(lv)料表面，增大(da)阻力(li)，所以(yi)一般的(de)正確更(geng)換(huan)時(shi)間是三至五(wu)個月！
