濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)(qi)以(yi)(yi)濾(lv)筒(tong)(tong)(tong)(tong)(tong)作為(wei)過濾(lv)元件所(suo)組(zu)成或采用脈沖噴(pen)吹的除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)(qi)。 濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)(qi)按安裝(zhuang)方式分(fen)，可(ke)以(yi)(yi)分(fen)為(wei)斜插式，側裝(zhuang)式，吊裝(zhuang)式，上(shang)裝(zhuang)式。 濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)(qi)按濾(lv)筒(tong)(tong)(tong)(tong)(tong)材料分(fen)，可(ke)以(yi)(yi)分(fen)為(wei)長纖(xian)維(wei)聚酯濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)(qi)，復合(he)纖(xian)維(wei)濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)(qi)，防靜(jing)電濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)(qi)，阻燃濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)(qi)，覆(fu)膜濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)(qi)，納米濾(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)(qi)等(deng)。
濾(lv)(lv)筒式除(chu)(chu)塵(chen)(chen)器(qi)(qi)早(zao)在20世紀(ji)70年(nian)(nian)代(dai)就已經在日本(ben)(ben)和歐美一些國(guo)家出現，具(ju)有(you)(you)體(ti)積(ji)(ji)小(xiao)，效率高(gao)(gao)，投資省，易(yi)維護(hu)等(deng)(deng)優點，但因其(qi)設備(bei)(bei)容(rong)量(liang)小(xiao)，難組合成大(da)風(feng)量(liang)設備(bei)(bei)，過(guo)濾(lv)(lv)風(feng)速(su)(su)偏低(di)，應(ying)用(yong)范(fan)圍窄，僅(jin)在糧食、焊接等(deng)(deng)行(xing)(xing)業應(ying)用(yong)，所以多年(nian)(nian)來(lai)未(wei)能大(da)量(liang)推廣(guang)。近年(nian)(nian)來(lai)，隨著新(xin)技(ji)術、新(xin)材(cai)料不(bu)斷地(di)發展，以日本(ben)(ben)，美國(guo)的(de)(de)公(gong)司為(wei)代(dai)表，對除(chu)(chu)塵(chen)(chen)器(qi)(qi)的(de)(de)結構和濾(lv)(lv)料進(jin)行(xing)(xing)了改進(jin)，使得濾(lv)(lv)筒除(chu)(chu)塵(chen)(chen)器(qi)(qi)廣(guang)泛地(di)應(ying)用(yong)于水泥(ni)、鋼鐵、電力、食品、冶金、化(hua)工等(deng)(deng)工業領域，整體(ti)容(rong)量(liang)增加(jia)數倍，成為(wei)過(guo)濾(lv)(lv)面積(ji)(ji)>2000m2大(da)型除(chu)(chu)塵(chen)(chen)器(qi)(qi)（GB6719－86類），是解決傳統除(chu)(chu)塵(chen)(chen)器(qi)(qi)對超細(xi)粉塵(chen)(chen)收(shou)集難、過(guo)濾(lv)(lv)風(feng)速(su)(su)高(gao)(gao)、清灰效果差、濾(lv)(lv)袋(dai)易(yi)磨(mo)損破漏、運行(xing)(xing)成本(ben)(ben)高(gao)(gao)的(de)(de)上(shang)好(hao)方案，和市(shi)場上(shang)現有(you)(you)各種袋(dai)式、靜(jing)電除(chu)(chu)塵(chen)(chen)器(qi)(qi)相(xiang)比具(ju)有(you)(you)有(you)(you)效過(guo)濾(lv)(lv)面積(ji)(ji)大(da)、壓(ya)差低(di)、低(di)排放(fang)、體(ti)積(ji)(ji)小(xiao)、使用(yong)壽命長等(deng)(deng)特點，成為(wei)工業除(chu)(chu)塵(chen)(chen)器(qi)(qi)發展的(de)(de)新(xin)方向。
濾筒式(shi)除(chu)塵器(qi)的結構(gou)是由(you)進風(feng)管、排(pai)風(feng)管、箱(xiang)體、灰(hui)斗、清灰(hui)裝(zhuang)(zhuang)置(zhi)、導(dao)流裝(zhuang)(zhuang)置(zhi)、氣流分(fen)流分(fen)布板、濾筒及電控裝(zhuang)(zhuang)置(zhi)組成，類似氣箱(xiang)脈沖(chong)袋除(chu)塵結構(gou)。
濾(lv)(lv)筒在(zai)(zai)除(chu)(chu)塵器(qi)中的布置很重(zhong)要，既可以垂直(zhi)布置在(zai)(zai)箱體花板上(shang)，也可以傾斜布置 在(zai)(zai)花板上(shang)，從(cong)清灰效果看，垂直(zhi)布置較為合理。花板下(xia)部(bu)為過濾(lv)(lv)室(shi)，上(shang)部(bu)為氣箱脈沖(chong)室(shi)。在(zai)(zai)除(chu)(chu)塵器(qi)入口處裝(zhuang)有氣流分布板。
含塵氣(qi)體進入除(chu)塵器灰斗后，由(you)于氣(qi)流斷面突然(ran)擴大及氣(qi)流分布板作(zuo)用，氣(qi)流中一部分粗(cu)大顆粒在(zai)動和慣(guan)性力作(zuo)用下沉降在(zai)灰斗；粒度(du)細、密(mi)度(du)小(xiao)的塵粒進入濾(lv)塵室(shi)后，通(tong)過布朗(lang)擴散(san)和篩濾(lv)等(deng)組合效應，使粉(fen)塵沉積(ji)在(zai)濾(lv)料表(biao)面上(shang)，凈化(hua)后的氣(qi)體進入凈氣(qi)室(shi)由(you)排(pai)氣(qi)管(guan)經風機排(pai)出(chu)。
濾(lv)(lv)(lv)筒(tong)式(shi)除(chu)塵(chen)器的(de)阻(zu)力(li)隨濾(lv)(lv)(lv)料表面粉塵(chen)層(ceng)厚(hou)度的(de)增加(jia)而增大(da)。阻(zu)力(li)達(da)到(dao)某一規定值時(shi)(shi)進(jin)行清灰(hui)(hui)(hui)。此時(shi)(shi)PLC程序控制脈(mo)沖(chong)閥(fa)的(de)啟閉，首(shou)先(xian)一分室(shi)提升閥(fa)關(guan)(guan)閉，將過(guo)濾(lv)(lv)(lv)氣(qi)(qi)流(liu)(liu)截斷，然后電磁(ci)脈(mo)沖(chong)閥(fa)開(kai)啟，壓縮空氣(qi)(qi)以及短的(de)時(shi)(shi)間在(zai)上(shang)箱體內迅速膨(peng)脹，涌(yong)入(ru)(ru)濾(lv)(lv)(lv)筒(tong)，使濾(lv)(lv)(lv)筒(tong)膨(peng)脹變形產(chan)生振動，并(bing)在(zai)逆(ni)向氣(qi)(qi)流(liu)(liu)沖(chong)刷的(de)作用(yong)下(xia)，附(fu)著在(zai)濾(lv)(lv)(lv)袋外表面上(shang)的(de)粉塵(chen)被剝離落入(ru)(ru)灰(hui)(hui)(hui)斗(dou)中。清灰(hui)(hui)(hui)完畢后，電磁(ci)脈(mo)沖(chong)閥(fa)關(guan)(guan)閉，提升閥(fa)打開(kai)，該室(shi)又恢復過(guo)濾(lv)(lv)(lv)狀態(tai)。清灰(hui)(hui)(hui)各室(shi)依次(ci)進(jin)行，從一室(shi)清灰(hui)(hui)(hui)開(kai)始至下(xia)一次(ci)清灰(hui)(hui)(hui)開(kai)始為一個清灰(hui)(hui)(hui)周期。脫落的(de)粉塵(chen)掉入(ru)(ru)灰(hui)(hui)(hui)斗(dou)內通過(guo)缷灰(hui)(hui)(hui)閥(fa)排出。
在(zai)此(ci)過(guo)程(cheng)中必須(xu)定期對濾(lv)筒(tong)進行更換和(he)清洗(xi)，以確保過(guo)濾(lv)效果和(he)精度(du)，因為在(zai)過(guo)濾(lv)過(guo)程(cheng)中粉塵除了被(bei)阻(zu)隔外還(huan)有部分會(hui)沉積(ji)于濾(lv)料(liao)表面(mian)，增大阻(zu)力，所(suo)以一(yi)般(ban)的正確更換時(shi)間是三至五個月！
