濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)以(yi)濾(lv)(lv)筒(tong)(tong)(tong)(tong)作為(wei)過(guo)濾(lv)(lv)元件(jian)所組成或采用脈沖噴吹(chui)的除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)。 濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)按(an)安裝(zhuang)方式分，可以(yi)分為(wei)斜插式，側裝(zhuang)式，吊裝(zhuang)式，上裝(zhuang)式。 濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)按(an)濾(lv)(lv)筒(tong)(tong)(tong)(tong)材料分，可以(yi)分為(wei)長纖(xian)維聚酯濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)，復合纖(xian)維濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)，防(fang)靜電濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)，阻燃濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)，覆膜濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)，納(na)米濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)等(deng)。
濾(lv)(lv)筒式除(chu)塵(chen)器早(zao)在20世紀70年(nian)代就已經在日本(ben)和歐美一些國家出現(xian)，具(ju)有體(ti)積(ji)小，效率高(gao)，投(tou)資省(sheng)，易(yi)維(wei)護等(deng)優點，但因其設(she)(she)備容(rong)量(liang)小，難組合(he)成大(da)風量(liang)設(she)(she)備，過(guo)濾(lv)(lv)風速偏低(di)，應(ying)(ying)用范圍窄，僅在糧食、焊接等(deng)行(xing)業應(ying)(ying)用，所以多年(nian)來(lai)未能大(da)量(liang)推廣。近年(nian)來(lai)，隨(sui)著新技術、新材料(liao)不斷地發(fa)展，以日本(ben)，美國的(de)公司為(wei)代表，對除(chu)塵(chen)器的(de)結構和濾(lv)(lv)料(liao)進行(xing)了改進，使得濾(lv)(lv)筒除(chu)塵(chen)器廣泛地應(ying)(ying)用于(yu)水泥、鋼鐵、電力、食品、冶金、化工(gong)(gong)等(deng)工(gong)(gong)業領域，整體(ti)容(rong)量(liang)增加數倍，成為(wei)過(guo)濾(lv)(lv)面積(ji)>2000m2大(da)型除(chu)塵(chen)器（GB6719－86類），是(shi)解決(jue)傳(chuan)統除(chu)塵(chen)器對超細(xi)粉(fen)塵(chen)收集難、過(guo)濾(lv)(lv)風速高(gao)、清灰效果差(cha)、濾(lv)(lv)袋(dai)易(yi)磨(mo)損破(po)漏、運行(xing)成本(ben)高(gao)的(de)上好方案，和市場上現(xian)有各種袋(dai)式、靜電除(chu)塵(chen)器相比具(ju)有有效過(guo)濾(lv)(lv)面積(ji)大(da)、壓(ya)差(cha)低(di)、低(di)排放、體(ti)積(ji)小、使用壽命長等(deng)特(te)點，成為(wei)工(gong)(gong)業除(chu)塵(chen)器發(fa)展的(de)新方向。
濾筒(tong)式除(chu)塵器(qi)的結構是由(you)進風管、排風管、箱體(ti)、灰斗、清灰裝置(zhi)、導流(liu)(liu)裝置(zhi)、氣(qi)流(liu)(liu)分(fen)(fen)流(liu)(liu)分(fen)(fen)布板、濾筒(tong)及電控(kong)裝置(zhi)組成，類(lei)似氣(qi)箱脈沖袋除(chu)塵結構。
濾筒在除塵(chen)器(qi)中(zhong)的布(bu)置(zhi)很重要，既可以(yi)垂直(zhi)布(bu)置(zhi)在箱體花(hua)板上，也可以(yi)傾斜布(bu)置(zhi) 在花(hua)板上，從清灰效果(guo)看，垂直(zhi)布(bu)置(zhi)較為(wei)合理。花(hua)板下(xia)部(bu)為(wei)過濾室，上部(bu)為(wei)氣(qi)箱脈沖室。在除塵(chen)器(qi)入(ru)口處(chu)裝有氣(qi)流(liu)分布(bu)板。
含塵(chen)(chen)(chen)氣(qi)(qi)體進(jin)入(ru)除塵(chen)(chen)(chen)器灰斗(dou)(dou)后，由于氣(qi)(qi)流(liu)斷面(mian)(mian)突(tu)然擴(kuo)大(da)及氣(qi)(qi)流(liu)分布板(ban)作用，氣(qi)(qi)流(liu)中(zhong)一部分粗大(da)顆粒在動和慣(guan)性力作用下沉(chen)降在灰斗(dou)(dou)；粒度(du)細、密度(du)小(xiao)的塵(chen)(chen)(chen)粒進(jin)入(ru)濾塵(chen)(chen)(chen)室(shi)后，通過布朗擴(kuo)散和篩濾等(deng)組合效應，使粉塵(chen)(chen)(chen)沉(chen)積(ji)在濾料(liao)表面(mian)(mian)上(shang)，凈(jing)化后的氣(qi)(qi)體進(jin)入(ru)凈(jing)氣(qi)(qi)室(shi)由排(pai)氣(qi)(qi)管(guan)經風機排(pai)出(chu)。
濾(lv)(lv)筒式(shi)除塵(chen)器的阻力隨濾(lv)(lv)料表面粉(fen)塵(chen)層(ceng)厚度的增加而增大(da)。阻力達到某一(yi)規定(ding)值(zhi)時(shi)進行清(qing)(qing)(qing)灰(hui)(hui)(hui)(hui)。此時(shi)PLC程序(xu)控制脈沖(chong)閥(fa)的啟閉(bi)，首先一(yi)分室提(ti)升閥(fa)關閉(bi)，將過濾(lv)(lv)氣(qi)流(liu)(liu)截(jie)斷，然(ran)后電磁脈沖(chong)閥(fa)開啟，壓縮空(kong)氣(qi)以及短(duan)的時(shi)間在上箱體(ti)內迅速(su)膨脹，涌(yong)入(ru)濾(lv)(lv)筒，使(shi)濾(lv)(lv)筒膨脹變形產生振動，并在逆向氣(qi)流(liu)(liu)沖(chong)刷(shua)的作用下，附著在濾(lv)(lv)袋外表面上的粉(fen)塵(chen)被剝離落入(ru)灰(hui)(hui)(hui)(hui)斗(dou)中。清(qing)(qing)(qing)灰(hui)(hui)(hui)(hui)完畢(bi)后，電磁脈沖(chong)閥(fa)關閉(bi)，提(ti)升閥(fa)打(da)開，該室又恢復(fu)過濾(lv)(lv)狀(zhuang)態。清(qing)(qing)(qing)灰(hui)(hui)(hui)(hui)各(ge)室依(yi)次進行，從(cong)一(yi)室清(qing)(qing)(qing)灰(hui)(hui)(hui)(hui)開始至(zhi)下一(yi)次清(qing)(qing)(qing)灰(hui)(hui)(hui)(hui)開始為一(yi)個清(qing)(qing)(qing)灰(hui)(hui)(hui)(hui)周(zhou)期。脫落的粉(fen)塵(chen)掉入(ru)灰(hui)(hui)(hui)(hui)斗(dou)內通(tong)過缷灰(hui)(hui)(hui)(hui)閥(fa)排(pai)出。
在此過程中必須(xu)定期(qi)對濾(lv)筒(tong)進行更換(huan)和清洗，以(yi)確保(bao)過濾(lv)效果和精度(du)，因為在過濾(lv)過程中粉塵除了被阻隔(ge)外還有(you)部分會沉(chen)積于濾(lv)料表面，增大阻力，所以(yi)一般的正確更換(huan)時間是三(san)至(zhi)五個月(yue)！
