濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)器(qi)(qi)以濾(lv)筒(tong)(tong)(tong)(tong)(tong)作為(wei)過濾(lv)元件所組成或采(cai)用脈沖噴(pen)吹的除(chu)塵(chen)器(qi)(qi)。 濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)器(qi)(qi)按安裝(zhuang)方式分(fen)(fen)，可(ke)以分(fen)(fen)為(wei)斜插式，側裝(zhuang)式，吊裝(zhuang)式，上裝(zhuang)式。 濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)器(qi)(qi)按濾(lv)筒(tong)(tong)(tong)(tong)(tong)材料分(fen)(fen)，可(ke)以分(fen)(fen)為(wei)長纖維聚酯濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)器(qi)(qi)，復合(he)纖維濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)器(qi)(qi)，防靜(jing)電(dian)濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)器(qi)(qi)，阻燃(ran)濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)器(qi)(qi)，覆(fu)膜濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)器(qi)(qi)，納米濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)器(qi)(qi)等。
濾(lv)(lv)筒式除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)早在20世(shi)紀(ji)70年(nian)(nian)代(dai)就已經(jing)在日(ri)本和(he)歐美一些國家出(chu)現，具有體積(ji)小，效(xiao)率(lv)高，投資省，易維護等優點，但(dan)因其(qi)設備(bei)容(rong)量(liang)小，難組(zu)合成(cheng)大風量(liang)設備(bei)，過(guo)(guo)濾(lv)(lv)風速(su)偏低，應用(yong)范圍窄，僅在糧食、焊接等行(xing)業(ye)應用(yong)，所以多年(nian)(nian)來(lai)未能大量(liang)推廣(guang)。近年(nian)(nian)來(lai)，隨著新技術(shu)、新材料不斷地(di)發展，以日(ri)本，美國的(de)(de)公(gong)司為代(dai)表(biao)，對(dui)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)的(de)(de)結構和(he)濾(lv)(lv)料進行(xing)了改進，使得(de)濾(lv)(lv)筒除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)廣(guang)泛地(di)應用(yong)于水(shui)泥(ni)、鋼鐵、電力、食品、冶金、化工(gong)(gong)等工(gong)(gong)業(ye)領域，整體容(rong)量(liang)增(zeng)加數(shu)倍，成(cheng)為過(guo)(guo)濾(lv)(lv)面積(ji)>2000m2大型除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)（GB6719－86類(lei)），是解決傳統除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)對(dui)超細(xi)粉塵(chen)(chen)(chen)(chen)收集難、過(guo)(guo)濾(lv)(lv)風速(su)高、清灰效(xiao)果差(cha)、濾(lv)(lv)袋易磨損破(po)漏、運行(xing)成(cheng)本高的(de)(de)上好方(fang)案，和(he)市場上現有各種袋式、靜電除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)相(xiang)比(bi)具有有效(xiao)過(guo)(guo)濾(lv)(lv)面積(ji)大、壓差(cha)低、低排放(fang)、體積(ji)小、使用(yong)壽命長等特點，成(cheng)為工(gong)(gong)業(ye)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)發展的(de)(de)新方(fang)向。
濾(lv)筒式除塵(chen)器的(de)結構是由進風管、排風管、箱(xiang)體、灰斗、清灰裝(zhuang)置(zhi)、導流裝(zhuang)置(zhi)、氣(qi)流分流分布(bu)板、濾(lv)筒及電控裝(zhuang)置(zhi)組(zu)成，類似氣(qi)箱(xiang)脈沖袋(dai)除塵(chen)結構。
濾筒在(zai)除塵器中(zhong)的布置(zhi)很重要，既可(ke)以(yi)垂(chui)直(zhi)布置(zhi)在(zai)箱體花(hua)板(ban)(ban)上，也(ye)可(ke)以(yi)傾(qing)斜布置(zhi) 在(zai)花(hua)板(ban)(ban)上，從清灰(hui)效(xiao)果看，垂(chui)直(zhi)布置(zhi)較為合(he)理。花(hua)板(ban)(ban)下部為過濾室，上部為氣(qi)箱脈沖室。在(zai)除塵器入口處裝有氣(qi)流分布板(ban)(ban)。
含塵(chen)氣(qi)體進入除塵(chen)器灰斗(dou)后(hou)，由(you)于氣(qi)流斷面突然擴(kuo)大(da)(da)及氣(qi)流分布(bu)(bu)板作(zuo)用，氣(qi)流中一部分粗大(da)(da)顆粒在動和慣性(xing)力作(zuo)用下(xia)沉(chen)降在灰斗(dou)；粒度細、密度小的塵(chen)粒進入濾(lv)塵(chen)室后(hou)，通過布(bu)(bu)朗(lang)擴(kuo)散和篩濾(lv)等組合效應，使粉塵(chen)沉(chen)積在濾(lv)料表(biao)面上，凈化后(hou)的氣(qi)體進入凈氣(qi)室由(you)排氣(qi)管經(jing)風機排出。
濾(lv)(lv)(lv)(lv)筒式除塵器的(de)阻力隨濾(lv)(lv)(lv)(lv)料表面粉(fen)塵層(ceng)厚(hou)度(du)的(de)增加(jia)而增大。阻力達(da)到某一規定值(zhi)時(shi)進(jin)(jin)行(xing)清(qing)灰(hui)(hui)(hui)。此(ci)時(shi)PLC程序控制脈(mo)沖(chong)(chong)閥(fa)(fa)的(de)啟閉，首(shou)先一分室提(ti)(ti)升(sheng)閥(fa)(fa)關閉，將過(guo)濾(lv)(lv)(lv)(lv)氣(qi)流截(jie)斷，然后電磁脈(mo)沖(chong)(chong)閥(fa)(fa)開(kai)啟，壓縮空氣(qi)以及短的(de)時(shi)間(jian)在上箱(xiang)體內迅速膨(peng)脹(zhang)，涌入(ru)濾(lv)(lv)(lv)(lv)筒，使(shi)濾(lv)(lv)(lv)(lv)筒膨(peng)脹(zhang)變(bian)形(xing)產生振動，并在逆(ni)向氣(qi)流沖(chong)(chong)刷(shua)的(de)作用(yong)下，附著在濾(lv)(lv)(lv)(lv)袋(dai)外表面上的(de)粉(fen)塵被(bei)剝離落入(ru)灰(hui)(hui)(hui)斗中。清(qing)灰(hui)(hui)(hui)完畢(bi)后，電磁脈(mo)沖(chong)(chong)閥(fa)(fa)關閉，提(ti)(ti)升(sheng)閥(fa)(fa)打(da)開(kai)，該室又(you)恢復過(guo)濾(lv)(lv)(lv)(lv)狀態。清(qing)灰(hui)(hui)(hui)各室依次進(jin)(jin)行(xing)，從一室清(qing)灰(hui)(hui)(hui)開(kai)始(shi)至下一次清(qing)灰(hui)(hui)(hui)開(kai)始(shi)為一個清(qing)灰(hui)(hui)(hui)周期。脫落的(de)粉(fen)塵掉(diao)入(ru)灰(hui)(hui)(hui)斗內通過(guo)缷灰(hui)(hui)(hui)閥(fa)(fa)排出。
在此過程中(zhong)(zhong)必(bi)須定期對濾筒進行(xing)更換和清洗，以確保過濾效果和精度，因為在過濾過程中(zhong)(zhong)粉塵除了被阻(zu)隔外還有部分會沉積于濾料表面(mian)，增大阻(zu)力，所以一般的(de)正(zheng)確更換時間是三至五個(ge)月！
