濾(lv)(lv)(lv)筒(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)以(yi)濾(lv)(lv)(lv)筒(tong)(tong)(tong)作為過濾(lv)(lv)(lv)元件所組成或采用脈沖噴吹的除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)按(an)安裝方式(shi)(shi)(shi)分(fen)，可以(yi)分(fen)為斜(xie)插式(shi)(shi)(shi)，側裝式(shi)(shi)(shi)，吊裝式(shi)(shi)(shi)，上裝式(shi)(shi)(shi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)按(an)濾(lv)(lv)(lv)筒(tong)(tong)(tong)材料分(fen)，可以(yi)分(fen)為長纖維(wei)(wei)聚酯(zhi)濾(lv)(lv)(lv)筒(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，復合纖維(wei)(wei)濾(lv)(lv)(lv)筒(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，防靜電(dian)濾(lv)(lv)(lv)筒(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，阻燃濾(lv)(lv)(lv)筒(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，覆膜濾(lv)(lv)(lv)筒(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，納米濾(lv)(lv)(lv)筒(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)等(deng)。
濾(lv)(lv)(lv)筒式除(chu)(chu)(chu)(chu)塵器(qi)早(zao)在(zai)(zai)(zai)20世紀70年(nian)代就已經在(zai)(zai)(zai)日(ri)本(ben)(ben)和(he)歐美一些國家出現，具有(you)體(ti)積小(xiao)，效(xiao)率高，投(tou)資省，易維(wei)護(hu)等優點，但因(yin)其設備容(rong)量(liang)(liang)小(xiao)，難組合成(cheng)大風量(liang)(liang)設備，過(guo)濾(lv)(lv)(lv)風速偏低，應用范圍窄，僅在(zai)(zai)(zai)糧食、焊接等行(xing)業(ye)(ye)應用，所以多(duo)年(nian)來未(wei)能大量(liang)(liang)推廣(guang)。近年(nian)來，隨著新技術、新材料不斷地(di)發展，以日(ri)本(ben)(ben)，美國的公司(si)為(wei)(wei)代表，對除(chu)(chu)(chu)(chu)塵器(qi)的結構和(he)濾(lv)(lv)(lv)料進行(xing)了改進，使得(de)濾(lv)(lv)(lv)筒除(chu)(chu)(chu)(chu)塵器(qi)廣(guang)泛(fan)地(di)應用于水(shui)泥、鋼鐵、電(dian)力、食品、冶金(jin)、化(hua)工等工業(ye)(ye)領(ling)域，整體(ti)容(rong)量(liang)(liang)增加數倍(bei)，成(cheng)為(wei)(wei)過(guo)濾(lv)(lv)(lv)面積>2000m2大型除(chu)(chu)(chu)(chu)塵器(qi)（GB6719－86類），是解(jie)決傳統除(chu)(chu)(chu)(chu)塵器(qi)對超(chao)細粉塵收集難、過(guo)濾(lv)(lv)(lv)風速高、清灰(hui)效(xiao)果(guo)差(cha)、濾(lv)(lv)(lv)袋易磨損破漏、運行(xing)成(cheng)本(ben)(ben)高的上(shang)好方案(an)，和(he)市場上(shang)現有(you)各(ge)種袋式、靜電(dian)除(chu)(chu)(chu)(chu)塵器(qi)相比具有(you)有(you)效(xiao)過(guo)濾(lv)(lv)(lv)面積大、壓差(cha)低、低排放(fang)、體(ti)積小(xiao)、使用壽(shou)命長等特點，成(cheng)為(wei)(wei)工業(ye)(ye)除(chu)(chu)(chu)(chu)塵器(qi)發展的新方向。
濾(lv)筒(tong)(tong)式除塵(chen)器的結(jie)(jie)構是由進風管(guan)、排風管(guan)、箱(xiang)體、灰斗、清灰裝(zhuang)(zhuang)置、導流裝(zhuang)(zhuang)置、氣流分流分布板、濾(lv)筒(tong)(tong)及電控裝(zhuang)(zhuang)置組成，類似(si)氣箱(xiang)脈沖袋除塵(chen)結(jie)(jie)構。
濾筒在(zai)除塵器中的布(bu)置(zhi)很重要，既(ji)可以垂(chui)直布(bu)置(zhi)在(zai)箱體花板上(shang)，也可以傾斜(xie)布(bu)置(zhi) 在(zai)花板上(shang)，從清灰效果(guo)看，垂(chui)直布(bu)置(zhi)較為合理。花板下部(bu)為過濾室，上(shang)部(bu)為氣箱脈(mo)沖室。在(zai)除塵器入(ru)口處(chu)裝有氣流分布(bu)板。
含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)進(jin)(jin)入(ru)除塵(chen)(chen)器(qi)灰斗(dou)后(hou)，由于氣(qi)(qi)(qi)(qi)流斷面突然(ran)擴大及氣(qi)(qi)(qi)(qi)流分布板作用(yong)，氣(qi)(qi)(qi)(qi)流中一部分粗大顆粒(li)在動(dong)和(he)慣(guan)性(xing)力作用(yong)下(xia)沉(chen)降(jiang)在灰斗(dou)；粒(li)度細(xi)、密(mi)度小的(de)塵(chen)(chen)粒(li)進(jin)(jin)入(ru)濾塵(chen)(chen)室后(hou)，通過布朗擴散(san)和(he)篩濾等組合效應，使粉(fen)塵(chen)(chen)沉(chen)積在濾料(liao)表(biao)面上，凈化后(hou)的(de)氣(qi)(qi)(qi)(qi)體(ti)進(jin)(jin)入(ru)凈氣(qi)(qi)(qi)(qi)室由排(pai)氣(qi)(qi)(qi)(qi)管經風機排(pai)出。
濾(lv)(lv)(lv)筒(tong)(tong)式除塵(chen)(chen)器的(de)阻力隨濾(lv)(lv)(lv)料(liao)表面(mian)粉(fen)塵(chen)(chen)層厚度(du)的(de)增加而(er)增大。阻力達到某一規(gui)定值(zhi)時(shi)進(jin)行清(qing)(qing)灰(hui)。此時(shi)PLC程序控制(zhi)脈(mo)沖(chong)閥(fa)(fa)的(de)啟閉(bi)，首先一分(fen)室提升閥(fa)(fa)關閉(bi)，將過濾(lv)(lv)(lv)氣流(liu)截(jie)斷，然后(hou)電磁(ci)(ci)脈(mo)沖(chong)閥(fa)(fa)開啟，壓縮空氣以及(ji)短的(de)時(shi)間(jian)在(zai)上箱體內迅速膨(peng)脹，涌入(ru)(ru)(ru)濾(lv)(lv)(lv)筒(tong)(tong)，使濾(lv)(lv)(lv)筒(tong)(tong)膨(peng)脹變形產生(sheng)振動，并在(zai)逆向氣流(liu)沖(chong)刷(shua)的(de)作用(yong)下，附著在(zai)濾(lv)(lv)(lv)袋外(wai)表面(mian)上的(de)粉(fen)塵(chen)(chen)被剝離落入(ru)(ru)(ru)灰(hui)斗中(zhong)。清(qing)(qing)灰(hui)完畢后(hou)，電磁(ci)(ci)脈(mo)沖(chong)閥(fa)(fa)關閉(bi)，提升閥(fa)(fa)打(da)開，該室又恢復過濾(lv)(lv)(lv)狀(zhuang)態。清(qing)(qing)灰(hui)各室依次進(jin)行，從一室清(qing)(qing)灰(hui)開始(shi)至下一次清(qing)(qing)灰(hui)開始(shi)為一個清(qing)(qing)灰(hui)周期(qi)。脫落的(de)粉(fen)塵(chen)(chen)掉入(ru)(ru)(ru)灰(hui)斗內通過缷(xie)灰(hui)閥(fa)(fa)排出。
在此(ci)過程中(zhong)必須定期對濾(lv)筒進行(xing)更換和清洗，以(yi)(yi)確保(bao)過濾(lv)效(xiao)果和精度，因為在過濾(lv)過程中(zhong)粉塵除了被(bei)阻(zu)隔外還有部(bu)分會沉積于濾(lv)料表面，增(zeng)大阻(zu)力(li)，所(suo)以(yi)(yi)一(yi)般(ban)的正確更換時間是(shi)三至(zhi)五(wu)個月！
