濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)以濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)作為過濾(lv)(lv)(lv)元(yuan)件(jian)所組成或采用脈沖噴吹的除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)按安裝(zhuang)方式(shi)分，可以分為斜插式(shi)，側裝(zhuang)式(shi)，吊裝(zhuang)式(shi)，上(shang)裝(zhuang)式(shi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)按濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)材料分，可以分為長纖維聚酯濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，復合纖維濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，防靜電濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，阻燃濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，覆膜濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，納(na)米濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)等。
濾(lv)筒式除(chu)塵器(qi)(qi)早在(zai)20世紀70年(nian)代就已經在(zai)日本(ben)和歐美(mei)一些國家出現，具(ju)有(you)(you)體積小(xiao)，效(xiao)(xiao)率高，投資省，易(yi)(yi)維(wei)護等(deng)優點，但因其設(she)備(bei)容量小(xiao)，難組(zu)合成大(da)風(feng)量設(she)備(bei)，過濾(lv)風(feng)速偏(pian)低，應(ying)(ying)用(yong)范圍窄(zhai)，僅在(zai)糧食(shi)、焊接(jie)等(deng)行業(ye)(ye)應(ying)(ying)用(yong)，所以多年(nian)來未能大(da)量推廣。近年(nian)來，隨著新(xin)技(ji)術、新(xin)材料(liao)不斷地發展(zhan)，以日本(ben)，美(mei)國的公(gong)司為代表(biao)，對(dui)除(chu)塵器(qi)(qi)的結(jie)構和濾(lv)料(liao)進(jin)行了(le)改進(jin)，使(shi)得濾(lv)筒除(chu)塵器(qi)(qi)廣泛地應(ying)(ying)用(yong)于水泥、鋼鐵(tie)、電(dian)力、食(shi)品(pin)、冶金、化工(gong)等(deng)工(gong)業(ye)(ye)領(ling)域，整體容量增(zeng)加(jia)數倍，成為過濾(lv)面積>2000m2大(da)型除(chu)塵器(qi)(qi)（GB6719－86類），是解決傳統除(chu)塵器(qi)(qi)對(dui)超(chao)細(xi)粉塵收(shou)集難、過濾(lv)風(feng)速高、清灰(hui)效(xiao)(xiao)果差、濾(lv)袋易(yi)(yi)磨(mo)損破漏(lou)、運行成本(ben)高的上好方(fang)案(an)，和市(shi)場上現有(you)(you)各種袋式、靜電(dian)除(chu)塵器(qi)(qi)相(xiang)比具(ju)有(you)(you)有(you)(you)效(xiao)(xiao)過濾(lv)面積大(da)、壓差低、低排放、體積小(xiao)、使(shi)用(yong)壽命長等(deng)特點，成為工(gong)業(ye)(ye)除(chu)塵器(qi)(qi)發展(zhan)的新(xin)方(fang)向。
濾(lv)筒(tong)式除(chu)塵器的結構是由進風管、排風管、箱(xiang)(xiang)體、灰(hui)斗、清灰(hui)裝置(zhi)、導流(liu)(liu)裝置(zhi)、氣流(liu)(liu)分(fen)流(liu)(liu)分(fen)布板、濾(lv)筒(tong)及電控裝置(zhi)組(zu)成(cheng)，類似氣箱(xiang)(xiang)脈沖袋除(chu)塵結構。
濾筒在除塵(chen)器中的布置(zhi)很(hen)重要(yao)，既可以(yi)垂直布置(zhi)在箱體花(hua)(hua)(hua)板(ban)上(shang)，也可以(yi)傾(qing)斜布置(zhi) 在花(hua)(hua)(hua)板(ban)上(shang)，從清(qing)灰效果(guo)看，垂直布置(zhi)較為合理。花(hua)(hua)(hua)板(ban)下部(bu)為過濾室(shi)，上(shang)部(bu)為氣箱脈沖室(shi)。在除塵(chen)器入口處裝有氣流分布板(ban)。
含塵氣體進入(ru)除(chu)塵器(qi)灰斗(dou)后，由(you)于氣流斷面突然(ran)擴大及氣流分布(bu)板(ban)作(zuo)用，氣流中一(yi)部(bu)分粗大顆粒(li)在(zai)動和(he)(he)慣性力(li)作(zuo)用下沉降在(zai)灰斗(dou)；粒(li)度細、密(mi)度小的塵粒(li)進入(ru)濾(lv)塵室后，通過布(bu)朗擴散(san)和(he)(he)篩濾(lv)等組合(he)效(xiao)應，使粉(fen)塵沉積(ji)在(zai)濾(lv)料表面上，凈(jing)(jing)化(hua)后的氣體進入(ru)凈(jing)(jing)氣室由(you)排氣管經風機排出。
濾筒(tong)式(shi)除塵(chen)器(qi)的(de)(de)阻力(li)隨濾料表面粉塵(chen)層厚度(du)的(de)(de)增加而增大。阻力(li)達到某(mou)一(yi)規定值時進(jin)行清灰(hui)。此時PLC程序控制脈沖(chong)(chong)閥的(de)(de)啟閉(bi)(bi)，首先一(yi)分(fen)室(shi)提(ti)升(sheng)閥關(guan)閉(bi)(bi)，將(jiang)過濾氣(qi)(qi)流(liu)截斷(duan)，然(ran)后電磁(ci)脈沖(chong)(chong)閥開啟，壓(ya)縮空氣(qi)(qi)以(yi)及短(duan)的(de)(de)時間在(zai)(zai)上箱體內迅速膨脹，涌入(ru)濾筒(tong)，使濾筒(tong)膨脹變(bian)形(xing)產生振動，并(bing)在(zai)(zai)逆向氣(qi)(qi)流(liu)沖(chong)(chong)刷(shua)的(de)(de)作用(yong)下，附著在(zai)(zai)濾袋外表面上的(de)(de)粉塵(chen)被剝離落(luo)入(ru)灰(hui)斗中。清灰(hui)完(wan)畢后，電磁(ci)脈沖(chong)(chong)閥關(guan)閉(bi)(bi)，提(ti)升(sheng)閥打(da)開，該室(shi)又(you)恢(hui)復過濾狀(zhuang)態(tai)。清灰(hui)各室(shi)依次(ci)進(jin)行，從一(yi)室(shi)清灰(hui)開始至(zhi)下一(yi)次(ci)清灰(hui)開始為一(yi)個清灰(hui)周期。脫落(luo)的(de)(de)粉塵(chen)掉(diao)入(ru)灰(hui)斗內通過缷灰(hui)閥排(pai)出。
在(zai)此過(guo)程(cheng)中必須定(ding)期對濾(lv)(lv)(lv)筒進行更(geng)換和清(qing)洗，以(yi)確(que)保(bao)過(guo)濾(lv)(lv)(lv)效果和精度(du)，因為在(zai)過(guo)濾(lv)(lv)(lv)過(guo)程(cheng)中粉塵除了(le)被阻(zu)隔外還有部分會沉(chen)積于濾(lv)(lv)(lv)料(liao)表(biao)面(mian)，增大阻(zu)力，所以(yi)一般(ban)的(de)正確(que)更(geng)換時間(jian)是(shi)三至五個(ge)月！
