濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)以(yi)(yi)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)作為過濾(lv)(lv)(lv)(lv)元(yuan)件所組成或采用脈沖噴吹的除(chu)塵器(qi)。 濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)按(an)安裝(zhuang)方式(shi)分，可(ke)以(yi)(yi)分為斜插式(shi)，側裝(zhuang)式(shi)，吊裝(zhuang)式(shi)，上裝(zhuang)式(shi)。 濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)按(an)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)材料分，可(ke)以(yi)(yi)分為長纖(xian)維聚酯(zhi)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)，復合纖(xian)維濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)，防(fang)靜電濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)，阻燃(ran)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)，覆膜濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)，納米濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)等(deng)。
濾筒(tong)式除(chu)(chu)(chu)塵(chen)器(qi)早在(zai)20世紀70年代(dai)就已經在(zai)日本和(he)歐美一些國(guo)家出現(xian)，具(ju)有(you)體積(ji)小，效率(lv)高，投資省，易維護等(deng)優點，但因其設備容(rong)量小，難(nan)組(zu)合成(cheng)大風量設備，過(guo)濾風速偏低(di)(di)，應(ying)(ying)用(yong)(yong)范圍(wei)窄，僅在(zai)糧食、焊接等(deng)行業(ye)應(ying)(ying)用(yong)(yong)，所以(yi)多年來未能大量推廣。近年來，隨著新(xin)技(ji)術、新(xin)材料不斷地發(fa)(fa)展，以(yi)日本，美國(guo)的(de)(de)公司為(wei)代(dai)表，對除(chu)(chu)(chu)塵(chen)器(qi)的(de)(de)結構和(he)濾料進行了改進，使得濾筒(tong)除(chu)(chu)(chu)塵(chen)器(qi)廣泛地應(ying)(ying)用(yong)(yong)于水(shui)泥、鋼鐵、電(dian)力(li)、食品、冶(ye)金(jin)、化工(gong)(gong)等(deng)工(gong)(gong)業(ye)領域(yu)，整體容(rong)量增加(jia)數倍，成(cheng)為(wei)過(guo)濾面積(ji)>2000m2大型除(chu)(chu)(chu)塵(chen)器(qi)（GB6719－86類），是解決傳統(tong)除(chu)(chu)(chu)塵(chen)器(qi)對超細粉塵(chen)收集難(nan)、過(guo)濾風速高、清(qing)灰(hui)效果差、濾袋易磨損(sun)破漏、運行成(cheng)本高的(de)(de)上好方案，和(he)市場上現(xian)有(you)各種袋式、靜(jing)電(dian)除(chu)(chu)(chu)塵(chen)器(qi)相比具(ju)有(you)有(you)效過(guo)濾面積(ji)大、壓(ya)差低(di)(di)、低(di)(di)排放、體積(ji)小、使用(yong)(yong)壽命長等(deng)特點，成(cheng)為(wei)工(gong)(gong)業(ye)除(chu)(chu)(chu)塵(chen)器(qi)發(fa)(fa)展的(de)(de)新(xin)方向(xiang)。
濾(lv)筒(tong)式除(chu)塵(chen)器(qi)的結構(gou)是由進(jin)風管、排(pai)風管、箱體、灰斗、清灰裝(zhuang)置、導流(liu)(liu)裝(zhuang)置、氣流(liu)(liu)分流(liu)(liu)分布(bu)板(ban)、濾(lv)筒(tong)及電控(kong)裝(zhuang)置組成，類似氣箱脈沖袋除(chu)塵(chen)結構(gou)。
濾(lv)筒在除(chu)(chu)塵器中的布(bu)置很重(zhong)要，既可以(yi)垂直布(bu)置在箱(xiang)體花板(ban)(ban)(ban)上(shang)，也可以(yi)傾斜布(bu)置 在花板(ban)(ban)(ban)上(shang)，從清灰效果看，垂直布(bu)置較為(wei)(wei)(wei)合理。花板(ban)(ban)(ban)下部為(wei)(wei)(wei)過濾(lv)室(shi)，上(shang)部為(wei)(wei)(wei)氣箱(xiang)脈沖室(shi)。在除(chu)(chu)塵器入口處裝有氣流分布(bu)板(ban)(ban)(ban)。
含塵(chen)(chen)氣體進(jin)入(ru)(ru)除塵(chen)(chen)器灰斗后，由于氣流(liu)斷面突然(ran)擴大及氣流(liu)分布(bu)板作用(yong)，氣流(liu)中一(yi)部(bu)分粗大顆粒在動(dong)和(he)慣(guan)性(xing)力作用(yong)下沉降在灰斗；粒度(du)細、密度(du)小的塵(chen)(chen)粒進(jin)入(ru)(ru)濾塵(chen)(chen)室后，通過布(bu)朗擴散和(he)篩濾等(deng)組合(he)效應(ying)，使粉塵(chen)(chen)沉積(ji)在濾料表面上，凈(jing)化后的氣體進(jin)入(ru)(ru)凈(jing)氣室由排氣管經風機排出(chu)。
濾(lv)(lv)筒(tong)式(shi)除塵(chen)器的(de)(de)阻力隨(sui)濾(lv)(lv)料表面粉(fen)(fen)塵(chen)層(ceng)厚度(du)的(de)(de)增(zeng)(zeng)加而(er)增(zeng)(zeng)大。阻力達到某一(yi)規(gui)定(ding)值時進(jin)行清(qing)灰(hui)(hui)(hui)(hui)。此時PLC程(cheng)序控制脈(mo)(mo)沖(chong)閥的(de)(de)啟(qi)閉(bi)，首先一(yi)分室(shi)提(ti)升閥關閉(bi)，將過(guo)(guo)濾(lv)(lv)氣流截斷(duan)，然后電磁脈(mo)(mo)沖(chong)閥開(kai)(kai)(kai)啟(qi)，壓縮空(kong)氣以及短的(de)(de)時間(jian)在上箱體內迅速膨脹，涌(yong)入(ru)濾(lv)(lv)筒(tong)，使濾(lv)(lv)筒(tong)膨脹變形產生(sheng)振動(dong)，并在逆向氣流沖(chong)刷的(de)(de)作用(yong)下，附著在濾(lv)(lv)袋外表面上的(de)(de)粉(fen)(fen)塵(chen)被剝離落入(ru)灰(hui)(hui)(hui)(hui)斗(dou)中。清(qing)灰(hui)(hui)(hui)(hui)完畢后，電磁脈(mo)(mo)沖(chong)閥關閉(bi)，提(ti)升閥打開(kai)(kai)(kai)，該室(shi)又恢復過(guo)(guo)濾(lv)(lv)狀態。清(qing)灰(hui)(hui)(hui)(hui)各(ge)室(shi)依(yi)次(ci)進(jin)行，從(cong)一(yi)室(shi)清(qing)灰(hui)(hui)(hui)(hui)開(kai)(kai)(kai)始至下一(yi)次(ci)清(qing)灰(hui)(hui)(hui)(hui)開(kai)(kai)(kai)始為一(yi)個(ge)清(qing)灰(hui)(hui)(hui)(hui)周期。脫落的(de)(de)粉(fen)(fen)塵(chen)掉入(ru)灰(hui)(hui)(hui)(hui)斗(dou)內通過(guo)(guo)缷灰(hui)(hui)(hui)(hui)閥排出(chu)。
在(zai)此(ci)過(guo)程(cheng)中(zhong)必須定(ding)期(qi)對濾筒進行更換(huan)和清洗，以確保(bao)過(guo)濾效(xiao)果和精(jing)度，因為在(zai)過(guo)濾過(guo)程(cheng)中(zhong)粉塵除了(le)被阻隔外還(huan)有部(bu)分會沉積于濾料表面，增(zeng)大阻力(li)，所以一般的(de)正確更換(huan)時間是三至五(wu)個(ge)月！
