濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器以濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)作(zuo)為(wei)過濾(lv)(lv)元(yuan)件所組成或采用脈沖噴(pen)吹的除(chu)(chu)塵(chen)(chen)器。 濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器按安裝(zhuang)(zhuang)方(fang)式(shi)分，可以分為(wei)斜插式(shi)，側裝(zhuang)(zhuang)式(shi)，吊(diao)裝(zhuang)(zhuang)式(shi)，上裝(zhuang)(zhuang)式(shi)。 濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器按濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)材料分，可以分為(wei)長纖維聚(ju)酯(zhi)濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器，復合纖維濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器，防靜電濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器，阻(zu)燃濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器，覆膜濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器，納米濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器等(deng)。
濾(lv)(lv)筒式(shi)(shi)除(chu)(chu)(chu)塵器(qi)早(zao)在20世紀70年(nian)代就(jiu)已(yi)經在日(ri)本和(he)歐美(mei)(mei)一些國家出現，具(ju)有(you)(you)體積小，效率高(gao)，投(tou)資省(sheng)，易(yi)維護等優點，但因其設備容(rong)(rong)量(liang)小，難組合成大(da)風(feng)量(liang)設備，過濾(lv)(lv)風(feng)速(su)偏低(di)，應(ying)用(yong)(yong)范圍窄，僅在糧食(shi)(shi)、焊接等行(xing)業(ye)應(ying)用(yong)(yong)，所(suo)以多(duo)年(nian)來(lai)未(wei)能大(da)量(liang)推(tui)廣(guang)。近年(nian)來(lai)，隨著新(xin)技術、新(xin)材料不斷(duan)地發(fa)展，以日(ri)本，美(mei)(mei)國的公司為代表，對(dui)除(chu)(chu)(chu)塵器(qi)的結構和(he)濾(lv)(lv)料進行(xing)了改(gai)進，使得濾(lv)(lv)筒除(chu)(chu)(chu)塵器(qi)廣(guang)泛地應(ying)用(yong)(yong)于(yu)水泥、鋼(gang)鐵、電力、食(shi)(shi)品、冶(ye)金、化工(gong)等工(gong)業(ye)領域，整體容(rong)(rong)量(liang)增(zeng)加數倍，成為過濾(lv)(lv)面(mian)積>2000m2大(da)型除(chu)(chu)(chu)塵器(qi)（GB6719－86類），是解決傳統除(chu)(chu)(chu)塵器(qi)對(dui)超細(xi)粉塵收(shou)集難、過濾(lv)(lv)風(feng)速(su)高(gao)、清灰效果差(cha)、濾(lv)(lv)袋易(yi)磨損破漏、運行(xing)成本高(gao)的上好方案(an)，和(he)市場上現有(you)(you)各(ge)種袋式(shi)(shi)、靜電除(chu)(chu)(chu)塵器(qi)相比(bi)具(ju)有(you)(you)有(you)(you)效過濾(lv)(lv)面(mian)積大(da)、壓差(cha)低(di)、低(di)排放、體積小、使用(yong)(yong)壽命長(chang)等特點，成為工(gong)業(ye)除(chu)(chu)(chu)塵器(qi)發(fa)展的新(xin)方向。
濾筒式除塵(chen)器的結(jie)構是由進風管、排風管、箱體、灰斗、清灰裝置(zhi)、導流裝置(zhi)、氣流分流分布板(ban)、濾筒及(ji)電控裝置(zhi)組(zu)成，類似氣箱脈沖袋除塵(chen)結(jie)構。
濾筒在除(chu)塵器(qi)中的布(bu)置(zhi)(zhi)很(hen)重要，既可以垂(chui)直(zhi)布(bu)置(zhi)(zhi)在箱體花(hua)(hua)板上，也可以傾(qing)斜(xie)布(bu)置(zhi)(zhi) 在花(hua)(hua)板上，從清灰效(xiao)果看，垂(chui)直(zhi)布(bu)置(zhi)(zhi)較為合理(li)。花(hua)(hua)板下(xia)部為過濾室，上部為氣(qi)箱脈沖室。在除(chu)塵器(qi)入口處(chu)裝有(you)氣(qi)流分布(bu)板。
含(han)塵(chen)(chen)氣(qi)(qi)體(ti)進(jin)入(ru)除塵(chen)(chen)器灰(hui)斗后，由于(yu)氣(qi)(qi)流(liu)斷面突(tu)然擴(kuo)大及氣(qi)(qi)流(liu)分布板(ban)作用，氣(qi)(qi)流(liu)中一部分粗大顆粒(li)在動和慣(guan)性力作用下沉(chen)降在灰(hui)斗；粒(li)度(du)細、密度(du)小的塵(chen)(chen)粒(li)進(jin)入(ru)濾塵(chen)(chen)室后，通過布朗擴(kuo)散和篩濾等組合效應，使粉塵(chen)(chen)沉(chen)積(ji)在濾料表面上，凈化后的氣(qi)(qi)體(ti)進(jin)入(ru)凈氣(qi)(qi)室由排氣(qi)(qi)管經(jing)風(feng)機排出。
濾(lv)筒式除塵器的(de)阻力隨濾(lv)料表面(mian)粉塵層厚(hou)度的(de)增(zeng)加而增(zeng)大。阻力達到某一規定值時(shi)(shi)進行清(qing)(qing)灰(hui)(hui)。此時(shi)(shi)PLC程(cheng)序控制脈(mo)沖(chong)閥(fa)(fa)的(de)啟閉，首先一分室提升閥(fa)(fa)關(guan)閉，將過(guo)濾(lv)氣(qi)流截斷，然(ran)后電(dian)磁脈(mo)沖(chong)閥(fa)(fa)開啟，壓(ya)縮空氣(qi)以及短的(de)時(shi)(shi)間在(zai)上箱體內迅速(su)膨脹，涌入(ru)濾(lv)筒，使濾(lv)筒膨脹變形(xing)產生振動，并在(zai)逆向氣(qi)流沖(chong)刷(shua)的(de)作用(yong)下，附著在(zai)濾(lv)袋外(wai)表面(mian)上的(de)粉塵被剝(bo)離(li)落入(ru)灰(hui)(hui)斗(dou)中。清(qing)(qing)灰(hui)(hui)完畢后，電(dian)磁脈(mo)沖(chong)閥(fa)(fa)關(guan)閉，提升閥(fa)(fa)打(da)開，該室又恢復過(guo)濾(lv)狀態。清(qing)(qing)灰(hui)(hui)各室依次(ci)進行，從一室清(qing)(qing)灰(hui)(hui)開始至下一次(ci)清(qing)(qing)灰(hui)(hui)開始為一個清(qing)(qing)灰(hui)(hui)周(zhou)期。脫落的(de)粉塵掉入(ru)灰(hui)(hui)斗(dou)內通過(guo)缷灰(hui)(hui)閥(fa)(fa)排(pai)出(chu)。
在此過程中必須(xu)定期對(dui)濾筒(tong)進行更(geng)換和清洗，以確(que)保過濾效果和精(jing)度(du)，因為在過濾過程中粉塵除了被阻隔外還有部(bu)分會沉積(ji)于濾料(liao)表面，增大阻力，所(suo)以一般的正(zheng)確(que)更(geng)換時間是三至(zhi)五個月！
