濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)(qi)以(yi)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)作(zuo)為過(guo)濾(lv)(lv)(lv)元(yuan)件(jian)所組成或采(cai)用(yong)脈(mo)沖噴吹的除(chu)塵(chen)(chen)(chen)器(qi)(qi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)(qi)按(an)安裝方(fang)式(shi)分(fen)，可(ke)以(yi)分(fen)為斜插(cha)式(shi)，側裝式(shi)，吊裝式(shi)，上裝式(shi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)(qi)按(an)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)材料(liao)分(fen)，可(ke)以(yi)分(fen)為長纖維聚酯濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)(qi)，復(fu)合纖維濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)(qi)，防靜電濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)(qi)，阻燃濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)(qi)，覆膜濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)(qi)，納米濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)(qi)等。
濾(lv)(lv)(lv)筒(tong)式除(chu)(chu)塵(chen)器(qi)早(zao)在(zai)20世紀70年(nian)代就已經(jing)在(zai)日本(ben)和歐美一些(xie)國家出現，具有(you)體(ti)積(ji)(ji)小，效(xiao)率(lv)高，投資省，易維護等(deng)優(you)點，但因其設備(bei)容(rong)量小，難組合成(cheng)大(da)風(feng)(feng)量設備(bei)，過濾(lv)(lv)(lv)風(feng)(feng)速偏低，應用(yong)范圍窄，僅在(zai)糧(liang)食、焊接等(deng)行(xing)業(ye)應用(yong)，所以多年(nian)來未能大(da)量推(tui)廣(guang)。近年(nian)來，隨(sui)著新技術、新材料不斷地(di)發展，以日本(ben)，美國的(de)(de)公司為代表，對(dui)除(chu)(chu)塵(chen)器(qi)的(de)(de)結(jie)構和濾(lv)(lv)(lv)料進行(xing)了改進，使(shi)得濾(lv)(lv)(lv)筒(tong)除(chu)(chu)塵(chen)器(qi)廣(guang)泛地(di)應用(yong)于水泥、鋼鐵、電(dian)力、食品(pin)、冶金、化工等(deng)工業(ye)領(ling)域，整體(ti)容(rong)量增加(jia)數(shu)倍，成(cheng)為過濾(lv)(lv)(lv)面(mian)(mian)積(ji)(ji)>2000m2大(da)型除(chu)(chu)塵(chen)器(qi)（GB6719－86類），是解(jie)決傳(chuan)統除(chu)(chu)塵(chen)器(qi)對(dui)超細粉塵(chen)收集難、過濾(lv)(lv)(lv)風(feng)(feng)速高、清灰效(xiao)果差、濾(lv)(lv)(lv)袋易磨(mo)損(sun)破漏、運行(xing)成(cheng)本(ben)高的(de)(de)上(shang)好(hao)方(fang)(fang)案，和市場(chang)上(shang)現有(you)各種袋式、靜電(dian)除(chu)(chu)塵(chen)器(qi)相(xiang)比具有(you)有(you)效(xiao)過濾(lv)(lv)(lv)面(mian)(mian)積(ji)(ji)大(da)、壓差低、低排放(fang)、體(ti)積(ji)(ji)小、使(shi)用(yong)壽(shou)命長等(deng)特點，成(cheng)為工業(ye)除(chu)(chu)塵(chen)器(qi)發展的(de)(de)新方(fang)(fang)向。
濾筒式除(chu)塵器的(de)結構(gou)是由進(jin)風(feng)管、排風(feng)管、箱(xiang)體、灰斗、清(qing)灰裝(zhuang)(zhuang)置、導流(liu)裝(zhuang)(zhuang)置、氣(qi)流(liu)分流(liu)分布板、濾筒及(ji)電控裝(zhuang)(zhuang)置組成，類似氣(qi)箱(xiang)脈(mo)沖(chong)袋除(chu)塵結構(gou)。
濾筒(tong)在(zai)除(chu)塵(chen)器中的布(bu)置(zhi)很(hen)重要，既可以垂直(zhi)布(bu)置(zhi)在(zai)箱體花(hua)板(ban)上，也可以傾(qing)斜布(bu)置(zhi) 在(zai)花(hua)板(ban)上，從清灰效果看，垂直(zhi)布(bu)置(zhi)較為合理。花(hua)板(ban)下(xia)部為過(guo)濾室(shi)(shi)，上部為氣箱脈沖(chong)室(shi)(shi)。在(zai)除(chu)塵(chen)器入口處裝有氣流分布(bu)板(ban)。
含塵氣(qi)(qi)體(ti)進(jin)入除(chu)塵器(qi)灰斗后(hou)，由(you)(you)于(yu)氣(qi)(qi)流斷面突然擴大及氣(qi)(qi)流分(fen)布板作用，氣(qi)(qi)流中一(yi)部(bu)分(fen)粗大顆粒(li)在動和(he)慣性(xing)力作用下(xia)沉(chen)降在灰斗；粒(li)度細、密度小的塵粒(li)進(jin)入濾塵室后(hou)，通過布朗擴散和(he)篩(shai)濾等組合(he)效應，使粉塵沉(chen)積在濾料(liao)表(biao)面上，凈化后(hou)的氣(qi)(qi)體(ti)進(jin)入凈氣(qi)(qi)室由(you)(you)排(pai)氣(qi)(qi)管經風機(ji)排(pai)出。
濾筒式除塵(chen)(chen)器的(de)阻力隨濾料表面粉(fen)(fen)塵(chen)(chen)層厚度(du)的(de)增(zeng)加而增(zeng)大(da)。阻力達到(dao)某(mou)一規定值時(shi)進行清(qing)(qing)(qing)灰(hui)。此時(shi)PLC程序控制脈(mo)沖閥的(de)啟(qi)閉(bi)，首(shou)先一分室(shi)(shi)(shi)提升閥關閉(bi)，將(jiang)過濾氣(qi)流(liu)截斷(duan)，然(ran)后電(dian)磁脈(mo)沖閥開(kai)啟(qi)，壓縮(suo)空氣(qi)以及短(duan)的(de)時(shi)間在上箱體(ti)內(nei)迅(xun)速膨脹，涌入(ru)濾筒，使(shi)濾筒膨脹變形(xing)產生振動(dong)，并在逆向氣(qi)流(liu)沖刷的(de)作用下，附(fu)著(zhu)在濾袋外表面上的(de)粉(fen)(fen)塵(chen)(chen)被剝離落入(ru)灰(hui)斗中。清(qing)(qing)(qing)灰(hui)完(wan)畢(bi)后，電(dian)磁脈(mo)沖閥關閉(bi)，提升閥打(da)開(kai)，該室(shi)(shi)(shi)又恢復(fu)過濾狀態。清(qing)(qing)(qing)灰(hui)各室(shi)(shi)(shi)依次進行，從一室(shi)(shi)(shi)清(qing)(qing)(qing)灰(hui)開(kai)始至下一次清(qing)(qing)(qing)灰(hui)開(kai)始為一個清(qing)(qing)(qing)灰(hui)周期。脫落的(de)粉(fen)(fen)塵(chen)(chen)掉入(ru)灰(hui)斗內(nei)通過缷灰(hui)閥排出(chu)。
在此過程中必(bi)須定期對濾筒進行更換和(he)清洗，以(yi)確保(bao)過濾效果和(he)精度，因為在過濾過程中粉塵除了被阻隔外還(huan)有部(bu)分會沉(chen)積于濾料表面，增大(da)阻力，所以(yi)一(yi)般(ban)的(de)正確更換時(shi)間(jian)是三至五個月！
