濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)以濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)作為過(guo)濾(lv)(lv)(lv)(lv)元(yuan)件(jian)所組(zu)成或(huo)采用脈沖噴吹的除(chu)(chu)塵(chen)(chen)器(qi)。 濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)按安裝(zhuang)(zhuang)方式(shi)分(fen)，可以分(fen)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)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)按濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)材料分(fen)，可以分(fen)為長纖維(wei)聚酯濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，復合(he)纖維(wei)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，防靜(jing)電濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，阻(zu)燃(ran)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，覆膜濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，納米(mi)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)等。
濾(lv)(lv)筒式除塵(chen)(chen)(chen)器(qi)早在20世紀70年(nian)(nian)代(dai)就已經(jing)在日本(ben)和歐美(mei)(mei)一(yi)些國家出現，具有體(ti)積小(xiao)，效(xiao)率高，投資省，易維(wei)護等優點，但因其設(she)(she)備(bei)容量小(xiao)，難(nan)組合(he)成大(da)風(feng)(feng)量設(she)(she)備(bei)，過(guo)(guo)濾(lv)(lv)風(feng)(feng)速偏低(di)(di)，應(ying)用(yong)范圍窄，僅(jin)在糧(liang)食、焊接(jie)等行業(ye)應(ying)用(yong)，所以多年(nian)(nian)來未能大(da)量推廣。近(jin)年(nian)(nian)來，隨著(zhu)新技術、新材料不斷(duan)地發展，以日本(ben)，美(mei)(mei)國的公(gong)司為(wei)代(dai)表，對除塵(chen)(chen)(chen)器(qi)的結構和濾(lv)(lv)料進(jin)行了改進(jin)，使(shi)得濾(lv)(lv)筒除塵(chen)(chen)(chen)器(qi)廣泛地應(ying)用(yong)于水泥、鋼鐵(tie)、電(dian)力、食品(pin)、冶金(jin)、化(hua)工等工業(ye)領域(yu)，整體(ti)容量增加數倍，成為(wei)過(guo)(guo)濾(lv)(lv)面積>2000m2大(da)型除塵(chen)(chen)(chen)器(qi)（GB6719－86類），是解決(jue)傳(chuan)統(tong)除塵(chen)(chen)(chen)器(qi)對超細粉塵(chen)(chen)(chen)收(shou)集難(nan)、過(guo)(guo)濾(lv)(lv)風(feng)(feng)速高、清灰效(xiao)果差、濾(lv)(lv)袋(dai)易磨損破漏、運行成本(ben)高的上好方(fang)案，和市(shi)場上現有各(ge)種袋(dai)式、靜(jing)電(dian)除塵(chen)(chen)(chen)器(qi)相比(bi)具有有效(xiao)過(guo)(guo)濾(lv)(lv)面積大(da)、壓差低(di)(di)、低(di)(di)排放(fang)、體(ti)積小(xiao)、使(shi)用(yong)壽命(ming)長等特點，成為(wei)工業(ye)除塵(chen)(chen)(chen)器(qi)發展的新方(fang)向。
濾筒(tong)式(shi)除(chu)塵(chen)器(qi)的結構(gou)(gou)是由進(jin)風(feng)管、排(pai)風(feng)管、箱體、灰(hui)(hui)斗、清(qing)灰(hui)(hui)裝(zhuang)置、導流裝(zhuang)置、氣流分流分布板、濾筒(tong)及電控(kong)裝(zhuang)置組成，類似氣箱脈(mo)沖袋(dai)除(chu)塵(chen)結構(gou)(gou)。
濾筒在(zai)除塵器(qi)中的布(bu)置(zhi)(zhi)很重(zhong)要，既可以垂直布(bu)置(zhi)(zhi)在(zai)箱體花(hua)板(ban)上(shang)(shang)，也可以傾斜布(bu)置(zhi)(zhi) 在(zai)花(hua)板(ban)上(shang)(shang)，從清(qing)灰效(xiao)果看，垂直布(bu)置(zhi)(zhi)較(jiao)為合理。花(hua)板(ban)下部(bu)為過濾室(shi)，上(shang)(shang)部(bu)為氣(qi)箱脈(mo)沖(chong)室(shi)。在(zai)除塵器(qi)入口處裝(zhuang)有氣(qi)流(liu)分(fen)布(bu)板(ban)。
含塵氣體(ti)進入(ru)(ru)除塵器灰斗后，由(you)于氣流斷面突然擴大(da)及氣流分布板作用，氣流中一部分粗大(da)顆粒(li)在動和慣性力作用下沉降(jiang)在灰斗；粒(li)度細(xi)、密度小的塵粒(li)進入(ru)(ru)濾塵室后，通(tong)過布朗擴散(san)和篩濾等組合(he)效應，使(shi)粉塵沉積(ji)在濾料表面上，凈(jing)化后的氣體(ti)進入(ru)(ru)凈(jing)氣室由(you)排氣管經(jing)風(feng)機(ji)排出。
濾(lv)(lv)筒式除塵器的(de)(de)阻力隨濾(lv)(lv)料表(biao)(biao)面粉塵層厚(hou)度的(de)(de)增加而增大。阻力達(da)到某一(yi)規定值時(shi)(shi)進行清(qing)(qing)灰(hui)(hui)(hui)。此時(shi)(shi)PLC程序控(kong)制脈(mo)沖閥的(de)(de)啟(qi)閉(bi)，首先一(yi)分室(shi)提(ti)升(sheng)閥關閉(bi)，將過(guo)濾(lv)(lv)氣流截斷，然后電磁脈(mo)沖閥開(kai)(kai)啟(qi)，壓縮空氣以(yi)及短的(de)(de)時(shi)(shi)間在(zai)上(shang)箱體內(nei)迅速膨脹(zhang)，涌入(ru)濾(lv)(lv)筒，使濾(lv)(lv)筒膨脹(zhang)變形(xing)產(chan)生振動(dong)，并在(zai)逆向(xiang)氣流沖刷(shua)的(de)(de)作用(yong)下(xia)，附著在(zai)濾(lv)(lv)袋外表(biao)(biao)面上(shang)的(de)(de)粉塵被(bei)剝離落入(ru)灰(hui)(hui)(hui)斗中。清(qing)(qing)灰(hui)(hui)(hui)完(wan)畢后，電磁脈(mo)沖閥關閉(bi)，提(ti)升(sheng)閥打(da)開(kai)(kai)，該室(shi)又恢復過(guo)濾(lv)(lv)狀態。清(qing)(qing)灰(hui)(hui)(hui)各室(shi)依次進行，從一(yi)室(shi)清(qing)(qing)灰(hui)(hui)(hui)開(kai)(kai)始至(zhi)下(xia)一(yi)次清(qing)(qing)灰(hui)(hui)(hui)開(kai)(kai)始為一(yi)個清(qing)(qing)灰(hui)(hui)(hui)周期。脫落的(de)(de)粉塵掉入(ru)灰(hui)(hui)(hui)斗內(nei)通(tong)過(guo)缷灰(hui)(hui)(hui)閥排出。
在此過(guo)程中(zhong)必須定期對濾(lv)(lv)筒(tong)進行更換(huan)和清洗，以確保過(guo)濾(lv)(lv)效果和精度，因為在過(guo)濾(lv)(lv)過(guo)程中(zhong)粉塵(chen)除了被(bei)阻(zu)隔外還(huan)有(you)部分會沉積于濾(lv)(lv)料表面，增(zeng)大(da)阻(zu)力(li)，所(suo)以一(yi)般(ban)的正(zheng)確更換(huan)時間是三至(zhi)五(wu)個月！
