濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)以(yi)濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)作為過濾(lv)(lv)(lv)(lv)(lv)元(yuan)件所組成或采用脈沖噴吹的除(chu)塵(chen)(chen)(chen)(chen)器(qi)。 濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)按安裝(zhuang)(zhuang)方式分(fen)，可(ke)以(yi)分(fen)為斜插(cha)式，側裝(zhuang)(zhuang)式，吊(diao)裝(zhuang)(zhuang)式，上(shang)裝(zhuang)(zhuang)式。 濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)按濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)材料分(fen)，可(ke)以(yi)分(fen)為長纖(xian)(xian)維(wei)聚酯(zhi)濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)，復合纖(xian)(xian)維(wei)濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)，防靜電濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)，阻(zu)燃濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)，覆(fu)膜濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)，納米(mi)濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)(chen)器(qi)等。
濾(lv)筒(tong)式除(chu)(chu)(chu)塵(chen)器(qi)早(zao)在(zai)(zai)20世(shi)紀70年(nian)代就已經在(zai)(zai)日(ri)本和歐美一些國(guo)家出(chu)現(xian)，具(ju)(ju)有(you)體(ti)積(ji)(ji)小(xiao)，效(xiao)率高，投資省，易(yi)維護等優點，但(dan)因(yin)其設(she)備(bei)容量小(xiao)，難組合成(cheng)(cheng)(cheng)大(da)風(feng)量設(she)備(bei)，過(guo)(guo)濾(lv)風(feng)速偏(pian)低，應(ying)用(yong)范圍窄，僅在(zai)(zai)糧食、焊接等行(xing)業(ye)應(ying)用(yong)，所以(yi)多年(nian)來未能大(da)量推廣。近年(nian)來，隨(sui)著(zhu)新(xin)技(ji)術、新(xin)材料不斷地(di)發展(zhan)，以(yi)日(ri)本，美國(guo)的公司為(wei)代表(biao)，對除(chu)(chu)(chu)塵(chen)器(qi)的結構和濾(lv)料進行(xing)了(le)改進，使(shi)得濾(lv)筒(tong)除(chu)(chu)(chu)塵(chen)器(qi)廣泛地(di)應(ying)用(yong)于水泥、鋼鐵、電力、食品、冶金、化工(gong)等工(gong)業(ye)領域，整體(ti)容量增加數倍，成(cheng)(cheng)(cheng)為(wei)過(guo)(guo)濾(lv)面(mian)積(ji)(ji)>2000m2大(da)型(xing)除(chu)(chu)(chu)塵(chen)器(qi)（GB6719－86類(lei)），是解決傳統除(chu)(chu)(chu)塵(chen)器(qi)對超細粉塵(chen)收集難、過(guo)(guo)濾(lv)風(feng)速高、清(qing)灰效(xiao)果差、濾(lv)袋(dai)易(yi)磨損破漏、運行(xing)成(cheng)(cheng)(cheng)本高的上好方案，和市場上現(xian)有(you)各種袋(dai)式、靜(jing)電除(chu)(chu)(chu)塵(chen)器(qi)相比具(ju)(ju)有(you)有(you)效(xiao)過(guo)(guo)濾(lv)面(mian)積(ji)(ji)大(da)、壓差低、低排放、體(ti)積(ji)(ji)小(xiao)、使(shi)用(yong)壽命長等特(te)點，成(cheng)(cheng)(cheng)為(wei)工(gong)業(ye)除(chu)(chu)(chu)塵(chen)器(qi)發展(zhan)的新(xin)方向。
濾(lv)筒(tong)式除塵器的結(jie)構(gou)是由進風管、排風管、箱(xiang)體、灰斗、清灰裝置(zhi)、導(dao)流裝置(zhi)、氣流分流分布板、濾(lv)筒(tong)及(ji)電(dian)控(kong)裝置(zhi)組成，類似氣箱(xiang)脈沖袋除塵結(jie)構(gou)。
濾筒在除塵(chen)器(qi)中的布(bu)(bu)置很(hen)重(zhong)要，既可以垂直(zhi)布(bu)(bu)置在箱體花板上，也可以傾斜布(bu)(bu)置 在花板上，從清灰(hui)效(xiao)果看，垂直(zhi)布(bu)(bu)置較為合理(li)。花板下部為過濾室，上部為氣(qi)箱脈(mo)沖室。在除塵(chen)器(qi)入(ru)口處裝有氣(qi)流(liu)分布(bu)(bu)板。
含塵氣(qi)體進入除塵器灰(hui)斗后(hou)(hou)，由于氣(qi)流(liu)斷面突(tu)然(ran)擴大及氣(qi)流(liu)分布(bu)板作用(yong)，氣(qi)流(liu)中一(yi)部(bu)分粗大顆粒在動和慣性力作用(yong)下(xia)沉降在灰(hui)斗；粒度(du)細、密度(du)小的塵粒進入濾塵室后(hou)(hou)，通(tong)過布(bu)朗(lang)擴散(san)和篩濾等組(zu)合效應，使(shi)粉塵沉積(ji)在濾料表面上(shang)，凈化后(hou)(hou)的氣(qi)體進入凈氣(qi)室由排氣(qi)管經風機排出。
濾(lv)筒式除塵器的(de)(de)阻力隨濾(lv)料表面粉(fen)(fen)塵層厚(hou)度的(de)(de)增(zeng)(zeng)加而增(zeng)(zeng)大。阻力達到某(mou)一規(gui)定(ding)值(zhi)時(shi)進(jin)行(xing)(xing)清(qing)灰(hui)(hui)(hui)(hui)(hui)。此時(shi)PLC程序(xu)控制(zhi)脈沖(chong)閥(fa)的(de)(de)啟閉(bi)，首先(xian)一分室提升閥(fa)關閉(bi)，將過(guo)濾(lv)氣流截斷，然后(hou)電磁(ci)脈沖(chong)閥(fa)開(kai)(kai)啟，壓縮空氣以(yi)及短(duan)的(de)(de)時(shi)間在上箱體內迅速膨(peng)脹，涌入(ru)(ru)濾(lv)筒，使(shi)濾(lv)筒膨(peng)脹變形產生振動，并(bing)在逆向氣流沖(chong)刷的(de)(de)作用下(xia)，附著在濾(lv)袋外表面上的(de)(de)粉(fen)(fen)塵被剝離落(luo)入(ru)(ru)灰(hui)(hui)(hui)(hui)(hui)斗中(zhong)。清(qing)灰(hui)(hui)(hui)(hui)(hui)完(wan)畢后(hou)，電磁(ci)脈沖(chong)閥(fa)關閉(bi)，提升閥(fa)打開(kai)(kai)，該室又(you)恢復過(guo)濾(lv)狀(zhuang)態。清(qing)灰(hui)(hui)(hui)(hui)(hui)各室依次進(jin)行(xing)(xing)，從一室清(qing)灰(hui)(hui)(hui)(hui)(hui)開(kai)(kai)始(shi)至下(xia)一次清(qing)灰(hui)(hui)(hui)(hui)(hui)開(kai)(kai)始(shi)為一個清(qing)灰(hui)(hui)(hui)(hui)(hui)周期(qi)。脫落(luo)的(de)(de)粉(fen)(fen)塵掉入(ru)(ru)灰(hui)(hui)(hui)(hui)(hui)斗內通過(guo)缷灰(hui)(hui)(hui)(hui)(hui)閥(fa)排(pai)出。
在此過(guo)程(cheng)中(zhong)(zhong)必須定期(qi)對濾(lv)筒進(jin)行更換和(he)清洗，以確(que)保(bao)過(guo)濾(lv)效果和(he)精度，因為在過(guo)濾(lv)過(guo)程(cheng)中(zhong)(zhong)粉(fen)塵除了被阻(zu)隔外還有(you)部分會(hui)沉積于濾(lv)料表(biao)面，增大阻(zu)力，所以一般的正(zheng)確(que)更換時間是三至五個月！
