濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)器(qi)以濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)作為過濾(lv)元件所組成或采用脈(mo)沖噴吹(chui)的除(chu)(chu)塵(chen)器(qi)。 濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)器(qi)按安(an)裝方(fang)式(shi)(shi)(shi)分，可以分為斜插式(shi)(shi)(shi)，側(ce)裝式(shi)(shi)(shi)，吊裝式(shi)(shi)(shi)，上裝式(shi)(shi)(shi)。 濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)器(qi)按濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)材料分，可以分為長纖維聚酯濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)器(qi)，復合纖維濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)器(qi)，防靜電濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)器(qi)，阻燃濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)器(qi)，覆膜濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)器(qi)，納米濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)器(qi)等。
濾(lv)(lv)筒式除(chu)(chu)塵(chen)(chen)(chen)器早在(zai)20世(shi)紀70年代就已(yi)經在(zai)日本(ben)和歐美(mei)一(yi)些(xie)國家出現，具有(you)體(ti)積(ji)(ji)小(xiao)，效率(lv)高，投資省(sheng)，易(yi)維(wei)護等優點(dian)，但因其設備容(rong)量(liang)(liang)小(xiao)，難(nan)組合成大風量(liang)(liang)設備，過(guo)(guo)濾(lv)(lv)風速偏低，應用(yong)范圍窄，僅在(zai)糧食、焊接等行業(ye)應用(yong)，所以(yi)多年來(lai)未能大量(liang)(liang)推廣(guang)。近年來(lai)，隨著新(xin)技術、新(xin)材料不斷(duan)地(di)發(fa)展(zhan)，以(yi)日本(ben)，美(mei)國的公司為代表(biao)，對(dui)除(chu)(chu)塵(chen)(chen)(chen)器的結(jie)構和濾(lv)(lv)料進(jin)行了改進(jin)，使(shi)得濾(lv)(lv)筒除(chu)(chu)塵(chen)(chen)(chen)器廣(guang)泛地(di)應用(yong)于水泥、鋼鐵(tie)、電(dian)力、食品、冶金、化工(gong)(gong)等工(gong)(gong)業(ye)領域，整體(ti)容(rong)量(liang)(liang)增加數倍，成為過(guo)(guo)濾(lv)(lv)面積(ji)(ji)>2000m2大型(xing)除(chu)(chu)塵(chen)(chen)(chen)器（GB6719－86類），是解(jie)決傳統除(chu)(chu)塵(chen)(chen)(chen)器對(dui)超細粉塵(chen)(chen)(chen)收集難(nan)、過(guo)(guo)濾(lv)(lv)風速高、清灰效果差、濾(lv)(lv)袋易(yi)磨(mo)損破漏、運行成本(ben)高的上(shang)好方案，和市場上(shang)現有(you)各種袋式、靜電(dian)除(chu)(chu)塵(chen)(chen)(chen)器相比具有(you)有(you)效過(guo)(guo)濾(lv)(lv)面積(ji)(ji)大、壓差低、低排放(fang)、體(ti)積(ji)(ji)小(xiao)、使(shi)用(yong)壽(shou)命長(chang)等特點(dian)，成為工(gong)(gong)業(ye)除(chu)(chu)塵(chen)(chen)(chen)器發(fa)展(zhan)的新(xin)方向(xiang)。
濾筒式除(chu)塵器的結(jie)構(gou)是由進(jin)風管(guan)、排風管(guan)、箱體(ti)、灰(hui)斗、清(qing)灰(hui)裝(zhuang)置(zhi)、導(dao)流(liu)裝(zhuang)置(zhi)、氣(qi)流(liu)分流(liu)分布板、濾筒及電控裝(zhuang)置(zhi)組成，類(lei)似氣(qi)箱脈沖袋除(chu)塵結(jie)構(gou)。
濾(lv)筒在除(chu)塵器中的(de)布(bu)置(zhi)很(hen)重要，既(ji)可以垂(chui)直布(bu)置(zhi)在箱(xiang)體花(hua)(hua)板上，也可以傾斜(xie)布(bu)置(zhi) 在花(hua)(hua)板上，從清灰效果看，垂(chui)直布(bu)置(zhi)較為(wei)合理(li)。花(hua)(hua)板下(xia)部為(wei)過(guo)濾(lv)室(shi)，上部為(wei)氣箱(xiang)脈沖室(shi)。在除(chu)塵器入口處裝有氣流(liu)分布(bu)板。
含(han)塵(chen)(chen)氣(qi)(qi)體(ti)進(jin)入(ru)除塵(chen)(chen)器灰斗(dou)后，由(you)于氣(qi)(qi)流(liu)斷面(mian)突然擴大(da)及氣(qi)(qi)流(liu)分布(bu)板作用，氣(qi)(qi)流(liu)中一部分粗(cu)大(da)顆(ke)粒(li)在(zai)動(dong)和慣性力作用下沉降在(zai)灰斗(dou)；粒(li)度(du)細、密度(du)小(xiao)的(de)塵(chen)(chen)粒(li)進(jin)入(ru)濾(lv)(lv)塵(chen)(chen)室(shi)后，通過布(bu)朗擴散和篩(shai)濾(lv)(lv)等組合效應，使粉塵(chen)(chen)沉積在(zai)濾(lv)(lv)料表(biao)面(mian)上，凈(jing)化后的(de)氣(qi)(qi)體(ti)進(jin)入(ru)凈(jing)氣(qi)(qi)室(shi)由(you)排(pai)氣(qi)(qi)管(guan)經(jing)風機排(pai)出(chu)。
濾(lv)(lv)(lv)(lv)筒式除(chu)塵器的(de)阻力隨濾(lv)(lv)(lv)(lv)料表(biao)面粉(fen)塵層厚度的(de)增加而(er)增大。阻力達到某一(yi)(yi)規(gui)定值時(shi)進行清(qing)灰(hui)。此(ci)時(shi)PLC程序(xu)控制脈(mo)沖閥(fa)的(de)啟(qi)(qi)閉，首先一(yi)(yi)分室(shi)提升閥(fa)關閉，將過(guo)濾(lv)(lv)(lv)(lv)氣(qi)(qi)(qi)流(liu)截斷，然后電(dian)磁脈(mo)沖閥(fa)開啟(qi)(qi)，壓(ya)縮空氣(qi)(qi)(qi)以及短的(de)時(shi)間在上箱(xiang)體內(nei)迅速(su)膨脹，涌入濾(lv)(lv)(lv)(lv)筒，使濾(lv)(lv)(lv)(lv)筒膨脹變形產(chan)生振動，并在逆(ni)向氣(qi)(qi)(qi)流(liu)沖刷的(de)作用下，附著在濾(lv)(lv)(lv)(lv)袋外表(biao)面上的(de)粉(fen)塵被剝離(li)落入灰(hui)斗(dou)中。清(qing)灰(hui)完(wan)畢后，電(dian)磁脈(mo)沖閥(fa)關閉，提升閥(fa)打(da)開，該室(shi)又恢復過(guo)濾(lv)(lv)(lv)(lv)狀態。清(qing)灰(hui)各室(shi)依次(ci)進行，從(cong)一(yi)(yi)室(shi)清(qing)灰(hui)開始(shi)至下一(yi)(yi)次(ci)清(qing)灰(hui)開始(shi)為一(yi)(yi)個清(qing)灰(hui)周期。脫落的(de)粉(fen)塵掉入灰(hui)斗(dou)內(nei)通(tong)過(guo)缷灰(hui)閥(fa)排(pai)出。
在此過(guo)程中(zhong)必須定(ding)期對濾(lv)筒進行更換(huan)和清洗，以確保(bao)過(guo)濾(lv)效果和精度，因為(wei)在過(guo)濾(lv)過(guo)程中(zhong)粉塵除了(le)被(bei)阻隔(ge)外還有部分會沉積(ji)于濾(lv)料表面(mian)，增大阻力，所以一般的正確更換(huan)時(shi)間(jian)是三至五(wu)個月(yue)！
