濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)以(yi)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)作為(wei)過濾(lv)(lv)(lv)(lv)元件(jian)所組成或采用脈沖噴吹(chui)的除(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)。 濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)按安裝方式(shi)(shi)分，可以(yi)分為(wei)斜插式(shi)(shi)，側裝式(shi)(shi)，吊裝式(shi)(shi)，上裝式(shi)(shi)。 濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)按濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)材料分，可以(yi)分為(wei)長纖維(wei)聚酯(zhi)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)，復合纖維(wei)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)，防靜(jing)電濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)，阻燃(ran)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)，覆膜濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)，納米濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)等。
濾(lv)(lv)(lv)筒(tong)式除(chu)(chu)塵(chen)器(qi)早在(zai)20世紀(ji)70年(nian)代(dai)就(jiu)已經在(zai)日本(ben)(ben)和(he)(he)歐(ou)美一些國家出現(xian)，具有(you)體積(ji)小(xiao)，效率(lv)高(gao)，投資省，易維護等優點，但因(yin)其(qi)設(she)備(bei)容量小(xiao)，難組合成(cheng)大風(feng)量設(she)備(bei)，過(guo)(guo)濾(lv)(lv)(lv)風(feng)速(su)偏低，應(ying)用范圍窄(zhai)，僅在(zai)糧(liang)食、焊(han)接等行(xing)業應(ying)用，所以多年(nian)來未能(neng)大量推廣(guang)。近年(nian)來，隨著新技術(shu)、新材料不(bu)斷地(di)發展，以日本(ben)(ben)，美國的公司為(wei)代(dai)表，對除(chu)(chu)塵(chen)器(qi)的結構(gou)和(he)(he)濾(lv)(lv)(lv)料進行(xing)了改進，使(shi)得濾(lv)(lv)(lv)筒(tong)除(chu)(chu)塵(chen)器(qi)廣(guang)泛(fan)地(di)應(ying)用于水泥、鋼鐵(tie)、電力、食品、冶(ye)金、化工(gong)(gong)等工(gong)(gong)業領域，整體容量增加數倍，成(cheng)為(wei)過(guo)(guo)濾(lv)(lv)(lv)面積(ji)>2000m2大型除(chu)(chu)塵(chen)器(qi)（GB6719－86類），是解決傳(chuan)統除(chu)(chu)塵(chen)器(qi)對超細粉塵(chen)收(shou)集難、過(guo)(guo)濾(lv)(lv)(lv)風(feng)速(su)高(gao)、清灰效果差、濾(lv)(lv)(lv)袋(dai)易磨損破漏、運行(xing)成(cheng)本(ben)(ben)高(gao)的上好方(fang)(fang)案(an)，和(he)(he)市場上現(xian)有(you)各種(zhong)袋(dai)式、靜電除(chu)(chu)塵(chen)器(qi)相比具有(you)有(you)效過(guo)(guo)濾(lv)(lv)(lv)面積(ji)大、壓差低、低排(pai)放(fang)、體積(ji)小(xiao)、使(shi)用壽命(ming)長等特(te)點，成(cheng)為(wei)工(gong)(gong)業除(chu)(chu)塵(chen)器(qi)發展的新方(fang)(fang)向。
濾筒式除塵(chen)器的結構是(shi)由進風(feng)管、排風(feng)管、箱(xiang)體(ti)、灰斗、清灰裝置、導流(liu)裝置、氣流(liu)分流(liu)分布板、濾筒及電(dian)控裝置組成(cheng)，類似氣箱(xiang)脈沖袋(dai)除塵(chen)結構。
濾筒在除塵器中的布(bu)置很重(zhong)要，既可以(yi)垂直布(bu)置在箱體花板上，也(ye)可以(yi)傾斜(xie)布(bu)置 在花板上，從清灰效果(guo)看，垂直布(bu)置較(jiao)為(wei)(wei)合理(li)。花板下部為(wei)(wei)過濾室，上部為(wei)(wei)氣(qi)(qi)箱脈沖室。在除塵器入(ru)口處裝有(you)氣(qi)(qi)流分布(bu)板。
含(han)塵(chen)(chen)氣(qi)(qi)體進(jin)入除塵(chen)(chen)器灰斗后(hou)，由(you)(you)于氣(qi)(qi)流斷面突然擴大(da)(da)及氣(qi)(qi)流分布板作(zuo)用(yong)，氣(qi)(qi)流中一(yi)部(bu)分粗大(da)(da)顆粒在(zai)(zai)動和慣(guan)性力作(zuo)用(yong)下(xia)沉降(jiang)在(zai)(zai)灰斗；粒度細(xi)、密度小的塵(chen)(chen)粒進(jin)入濾塵(chen)(chen)室后(hou)，通過布朗(lang)擴散和篩濾等組合效應，使粉(fen)塵(chen)(chen)沉積在(zai)(zai)濾料表面上(shang)，凈(jing)化后(hou)的氣(qi)(qi)體進(jin)入凈(jing)氣(qi)(qi)室由(you)(you)排(pai)氣(qi)(qi)管經風機(ji)排(pai)出。
濾(lv)(lv)筒式除(chu)塵(chen)器的阻力隨濾(lv)(lv)料表(biao)面(mian)(mian)粉塵(chen)層厚度(du)的增(zeng)加(jia)而增(zeng)大。阻力達到(dao)某(mou)一(yi)規定值時進行(xing)清(qing)灰(hui)(hui)。此時PLC程序控制脈(mo)(mo)(mo)沖(chong)閥(fa)的啟閉(bi)，首(shou)先一(yi)分室(shi)(shi)提(ti)升閥(fa)關閉(bi)，將過(guo)(guo)濾(lv)(lv)氣流(liu)截(jie)斷，然(ran)后電磁(ci)脈(mo)(mo)(mo)沖(chong)閥(fa)開啟，壓縮(suo)空(kong)氣以(yi)及短的時間在上(shang)箱體內迅(xun)速膨脹，涌入濾(lv)(lv)筒，使濾(lv)(lv)筒膨脹變形產生振動，并在逆(ni)向氣流(liu)沖(chong)刷的作用(yong)下(xia)，附著在濾(lv)(lv)袋外表(biao)面(mian)(mian)上(shang)的粉塵(chen)被(bei)剝離落入灰(hui)(hui)斗中。清(qing)灰(hui)(hui)完畢后，電磁(ci)脈(mo)(mo)(mo)沖(chong)閥(fa)關閉(bi)，提(ti)升閥(fa)打開，該(gai)室(shi)(shi)又恢復過(guo)(guo)濾(lv)(lv)狀態。清(qing)灰(hui)(hui)各室(shi)(shi)依次(ci)進行(xing)，從一(yi)室(shi)(shi)清(qing)灰(hui)(hui)開始至下(xia)一(yi)次(ci)清(qing)灰(hui)(hui)開始為一(yi)個清(qing)灰(hui)(hui)周(zhou)期。脫落的粉塵(chen)掉入灰(hui)(hui)斗內通過(guo)(guo)缷(xie)灰(hui)(hui)閥(fa)排出(chu)。
在此過程中必須(xu)定期對濾筒進行更(geng)換和清洗，以確保過濾效果(guo)和精(jing)度，因為在過濾過程中粉塵除了被阻隔(ge)外(wai)還有部分會沉積(ji)于濾料表(biao)面，增大阻力(li)，所以一般(ban)的正(zheng)確更(geng)換時間是三至五(wu)個月！
