濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)以濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)作(zuo)為過濾(lv)(lv)元件所組(zu)成或采用(yong)脈沖噴吹的(de)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)。 濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)按(an)安(an)裝(zhuang)(zhuang)方式(shi)分，可(ke)以分為斜插式(shi)，側裝(zhuang)(zhuang)式(shi)，吊裝(zhuang)(zhuang)式(shi)，上裝(zhuang)(zhuang)式(shi)。 濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)按(an)濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)材料分，可(ke)以分為長(chang)纖維聚(ju)酯(zhi)濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)，復合纖維濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)，防(fang)靜電濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)，阻燃(ran)濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)，覆膜濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)，納米濾(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)等。
濾(lv)筒(tong)(tong)式除塵(chen)(chen)器(qi)(qi)早在20世紀70年(nian)(nian)代就已經在日本(ben)和歐美(mei)(mei)一些國家出現，具(ju)有體(ti)積小，效(xiao)率高，投資省，易維護等(deng)優點(dian)(dian)，但因其設(she)備(bei)(bei)容(rong)量(liang)(liang)小，難組合(he)成(cheng)(cheng)大風量(liang)(liang)設(she)備(bei)(bei)，過(guo)(guo)濾(lv)風速(su)(su)偏低，應用(yong)范圍窄，僅在糧(liang)食、焊接等(deng)行(xing)(xing)業應用(yong)，所以(yi)多年(nian)(nian)來(lai)(lai)未能大量(liang)(liang)推廣。近(jin)年(nian)(nian)來(lai)(lai)，隨著新(xin)(xin)技術、新(xin)(xin)材料不(bu)斷地(di)發(fa)展，以(yi)日本(ben)，美(mei)(mei)國的(de)公司為代表，對(dui)除塵(chen)(chen)器(qi)(qi)的(de)結構和濾(lv)料進行(xing)(xing)了改進，使得濾(lv)筒(tong)(tong)除塵(chen)(chen)器(qi)(qi)廣泛地(di)應用(yong)于水泥、鋼鐵、電力、食品、冶(ye)金、化工(gong)等(deng)工(gong)業領(ling)域，整(zheng)體(ti)容(rong)量(liang)(liang)增加數(shu)倍，成(cheng)(cheng)為過(guo)(guo)濾(lv)面積>2000m2大型除塵(chen)(chen)器(qi)(qi)（GB6719－86類(lei)），是(shi)解決傳統除塵(chen)(chen)器(qi)(qi)對(dui)超細粉塵(chen)(chen)收集難、過(guo)(guo)濾(lv)風速(su)(su)高、清灰效(xiao)果差、濾(lv)袋易磨損破漏、運行(xing)(xing)成(cheng)(cheng)本(ben)高的(de)上好方(fang)案，和市場上現有各種袋式、靜電除塵(chen)(chen)器(qi)(qi)相比(bi)具(ju)有有效(xiao)過(guo)(guo)濾(lv)面積大、壓差低、低排放、體(ti)積小、使用(yong)壽命長等(deng)特點(dian)(dian)，成(cheng)(cheng)為工(gong)業除塵(chen)(chen)器(qi)(qi)發(fa)展的(de)新(xin)(xin)方(fang)向(xiang)。
濾筒(tong)式除(chu)塵器的結構(gou)是由(you)進(jin)風管、排風管、箱(xiang)體、灰斗、清灰裝置(zhi)、導流裝置(zhi)、氣流分(fen)流分(fen)布板、濾筒(tong)及(ji)電控裝置(zhi)組成，類似氣箱(xiang)脈沖袋(dai)除(chu)塵結構(gou)。
濾(lv)(lv)筒在(zai)除塵器中的布置(zhi)(zhi)很(hen)重要，既(ji)可(ke)以(yi)垂直(zhi)布置(zhi)(zhi)在(zai)箱體花(hua)板上，也可(ke)以(yi)傾(qing)斜布置(zhi)(zhi) 在(zai)花(hua)板上，從清灰效果看(kan)，垂直(zhi)布置(zhi)(zhi)較(jiao)為(wei)合理(li)。花(hua)板下部為(wei)過濾(lv)(lv)室(shi)，上部為(wei)氣箱脈沖(chong)室(shi)。在(zai)除塵器入口(kou)處裝有氣流分(fen)布板。
含塵(chen)(chen)(chen)氣體進入除塵(chen)(chen)(chen)器灰(hui)斗(dou)(dou)后(hou)，由(you)于氣流斷(duan)面突然擴(kuo)大(da)(da)及氣流分布板(ban)作(zuo)用(yong)，氣流中(zhong)一部分粗大(da)(da)顆(ke)粒在動和慣性力作(zuo)用(yong)下沉降(jiang)在灰(hui)斗(dou)(dou)；粒度細、密度小的塵(chen)(chen)(chen)粒進入濾塵(chen)(chen)(chen)室(shi)后(hou)，通過布朗擴(kuo)散和篩濾等組合效應，使粉塵(chen)(chen)(chen)沉積在濾料表面上，凈化后(hou)的氣體進入凈氣室(shi)由(you)排氣管(guan)經風機(ji)排出(chu)。
濾(lv)(lv)(lv)筒(tong)(tong)式(shi)除塵(chen)器的阻力(li)隨(sui)濾(lv)(lv)(lv)料表面粉塵(chen)層厚度的增加而增大。阻力(li)達(da)到某(mou)一規定值時進(jin)(jin)行清灰(hui)(hui)(hui)(hui)。此時PLC程序控制脈(mo)沖閥的啟(qi)閉(bi)，首先(xian)一分室(shi)(shi)提升閥關閉(bi)，將過濾(lv)(lv)(lv)氣流(liu)截斷，然后電磁(ci)脈(mo)沖閥開啟(qi)，壓縮空(kong)氣以及短的時間在上箱體內(nei)迅速膨脹，涌入濾(lv)(lv)(lv)筒(tong)(tong)，使濾(lv)(lv)(lv)筒(tong)(tong)膨脹變形(xing)產生(sheng)振動，并在逆向氣流(liu)沖刷(shua)的作用(yong)下，附著在濾(lv)(lv)(lv)袋外表面上的粉塵(chen)被剝離落入灰(hui)(hui)(hui)(hui)斗(dou)中。清灰(hui)(hui)(hui)(hui)完畢(bi)后，電磁(ci)脈(mo)沖閥關閉(bi)，提升閥打開，該室(shi)(shi)又恢復過濾(lv)(lv)(lv)狀(zhuang)態(tai)。清灰(hui)(hui)(hui)(hui)各室(shi)(shi)依(yi)次進(jin)(jin)行，從一室(shi)(shi)清灰(hui)(hui)(hui)(hui)開始(shi)至下一次清灰(hui)(hui)(hui)(hui)開始(shi)為(wei)一個清灰(hui)(hui)(hui)(hui)周期。脫落的粉塵(chen)掉(diao)入灰(hui)(hui)(hui)(hui)斗(dou)內(nei)通過缷(xie)灰(hui)(hui)(hui)(hui)閥排出。
在此過程中(zhong)必須(xu)定期對濾(lv)(lv)(lv)筒進行更(geng)(geng)換和清(qing)洗，以(yi)確保(bao)過濾(lv)(lv)(lv)效果和精(jing)度(du)，因為在過濾(lv)(lv)(lv)過程中(zhong)粉塵(chen)除了被阻隔外還有部分(fen)會沉積于濾(lv)(lv)(lv)料表面，增大(da)阻力(li)，所(suo)以(yi)一般(ban)的正確更(geng)(geng)換時間是三至五(wu)個月！
