濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)以濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)作為過濾(lv)(lv)(lv)元件所組成或(huo)采用脈沖噴吹的除(chu)(chu)塵(chen)(chen)器(qi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)按安裝方式(shi)分(fen)，可以分(fen)為斜(xie)插式(shi)，側裝式(shi)，吊裝式(shi)，上(shang)裝式(shi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)按濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)材料分(fen)，可以分(fen)為長纖維(wei)聚酯濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，復合纖維(wei)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，防靜電濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，阻燃濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，覆(fu)膜(mo)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，納米(mi)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)等。
濾(lv)筒式(shi)除(chu)(chu)(chu)塵(chen)(chen)器(qi)早(zao)在(zai)20世紀70年(nian)代就已(yi)經在(zai)日本(ben)和(he)歐美一(yi)些(xie)國(guo)家出現，具有體積(ji)小(xiao)，效率高(gao)，投資省，易(yi)維護等優點，但因其設(she)備容(rong)量(liang)(liang)小(xiao)，難(nan)組合(he)成(cheng)大風量(liang)(liang)設(she)備，過(guo)濾(lv)風速(su)偏低(di)，應(ying)用(yong)(yong)(yong)范圍窄，僅在(zai)糧(liang)食、焊接等行業應(ying)用(yong)(yong)(yong)，所以多年(nian)來未能大量(liang)(liang)推廣。近年(nian)來，隨著新技術(shu)、新材料(liao)不斷地(di)發展，以日本(ben)，美國(guo)的(de)公司為代表，對(dui)除(chu)(chu)(chu)塵(chen)(chen)器(qi)的(de)結構和(he)濾(lv)料(liao)進行了改進，使得濾(lv)筒除(chu)(chu)(chu)塵(chen)(chen)器(qi)廣泛地(di)應(ying)用(yong)(yong)(yong)于水泥、鋼鐵、電(dian)力(li)、食品(pin)、冶金、化工等工業領域，整(zheng)體容(rong)量(liang)(liang)增(zeng)加(jia)數倍(bei)，成(cheng)為過(guo)濾(lv)面(mian)積(ji)>2000m2大型除(chu)(chu)(chu)塵(chen)(chen)器(qi)（GB6719－86類），是解決傳(chuan)統(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)對(dui)超細粉塵(chen)(chen)收(shou)集難(nan)、過(guo)濾(lv)風速(su)高(gao)、清灰效果差、濾(lv)袋易(yi)磨損破漏(lou)、運行成(cheng)本(ben)高(gao)的(de)上好方案，和(he)市場上現有各種(zhong)袋式(shi)、靜電(dian)除(chu)(chu)(chu)塵(chen)(chen)器(qi)相比具有有效過(guo)濾(lv)面(mian)積(ji)大、壓差低(di)、低(di)排(pai)放、體積(ji)小(xiao)、使用(yong)(yong)(yong)壽命(ming)長等特點，成(cheng)為工業除(chu)(chu)(chu)塵(chen)(chen)器(qi)發展的(de)新方向。
濾筒式(shi)除(chu)塵器(qi)的結構是(shi)由進風管、排(pai)風管、箱體、灰斗、清灰裝置(zhi)、導流(liu)裝置(zhi)、氣流(liu)分流(liu)分布板、濾筒及電控裝置(zhi)組成，類似氣箱脈沖袋除(chu)塵結構。
濾筒(tong)在(zai)除(chu)塵(chen)器中的布(bu)(bu)置(zhi)很重要，既可(ke)以垂直(zhi)布(bu)(bu)置(zhi)在(zai)箱體(ti)花板(ban)上(shang)，也可(ke)以傾斜布(bu)(bu)置(zhi) 在(zai)花板(ban)上(shang)，從清灰效(xiao)果看，垂直(zhi)布(bu)(bu)置(zhi)較為(wei)(wei)合理。花板(ban)下部為(wei)(wei)過濾室，上(shang)部為(wei)(wei)氣箱脈沖室。在(zai)除(chu)塵(chen)器入口處裝有氣流分布(bu)(bu)板(ban)。
含塵氣(qi)(qi)體進入除塵器灰斗后，由于氣(qi)(qi)流斷面突然擴大(da)及氣(qi)(qi)流分(fen)布板作用，氣(qi)(qi)流中一部分(fen)粗大(da)顆(ke)粒在動(dong)和慣性力作用下沉(chen)降在灰斗；粒度(du)(du)細、密度(du)(du)小的塵粒進入濾塵室后，通過布朗擴散和篩(shai)濾等(deng)組(zu)合效(xiao)應，使粉塵沉(chen)積在濾料表面上，凈化后的氣(qi)(qi)體進入凈氣(qi)(qi)室由排(pai)氣(qi)(qi)管經風機排(pai)出。
濾(lv)(lv)筒(tong)(tong)式除塵(chen)器的(de)(de)阻(zu)力隨濾(lv)(lv)料表面粉塵(chen)層厚度(du)的(de)(de)增(zeng)(zeng)加而增(zeng)(zeng)大(da)。阻(zu)力達到某一規定值時(shi)進行清(qing)灰(hui)。此時(shi)PLC程(cheng)序控制脈(mo)沖(chong)閥的(de)(de)啟閉，首(shou)先(xian)一分室(shi)提(ti)升閥關閉，將過濾(lv)(lv)氣流(liu)(liu)截斷(duan)，然(ran)后電磁(ci)(ci)脈(mo)沖(chong)閥開(kai)啟，壓縮空氣以及短的(de)(de)時(shi)間在上箱體內迅速膨(peng)脹，涌入(ru)(ru)濾(lv)(lv)筒(tong)(tong)，使濾(lv)(lv)筒(tong)(tong)膨(peng)脹變(bian)形(xing)產生振(zhen)動，并在逆向氣流(liu)(liu)沖(chong)刷的(de)(de)作用下，附(fu)著在濾(lv)(lv)袋外表面上的(de)(de)粉塵(chen)被剝(bo)離落入(ru)(ru)灰(hui)斗(dou)(dou)中(zhong)。清(qing)灰(hui)完畢后，電磁(ci)(ci)脈(mo)沖(chong)閥關閉，提(ti)升閥打開(kai)，該室(shi)又恢復過濾(lv)(lv)狀態。清(qing)灰(hui)各室(shi)依次(ci)進行，從一室(shi)清(qing)灰(hui)開(kai)始至下一次(ci)清(qing)灰(hui)開(kai)始為一個清(qing)灰(hui)周期。脫落的(de)(de)粉塵(chen)掉入(ru)(ru)灰(hui)斗(dou)(dou)內通過缷灰(hui)閥排(pai)出(chu)。
在此過程(cheng)中(zhong)必須(xu)定期(qi)對(dui)濾(lv)(lv)筒進(jin)行更(geng)(geng)換和(he)(he)清洗，以確保(bao)過濾(lv)(lv)效果和(he)(he)精度，因為在過濾(lv)(lv)過程(cheng)中(zhong)粉塵除了被(bei)阻隔外還有部(bu)分會沉積于(yu)濾(lv)(lv)料表(biao)面，增大阻力(li)，所以一般的正(zheng)確更(geng)(geng)換時(shi)間是三至五個月(yue)！
