濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)(qi)(qi)(qi)以(yi)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)作為過濾(lv)(lv)(lv)(lv)元件(jian)所組成或采用脈(mo)沖噴吹的(de)除(chu)塵器(qi)(qi)(qi)(qi)。 濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)(qi)(qi)(qi)按(an)安裝方式(shi)(shi)分(fen)，可以(yi)分(fen)為斜(xie)插式(shi)(shi)，側裝式(shi)(shi)，吊裝式(shi)(shi)，上裝式(shi)(shi)。 濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)(qi)(qi)(qi)按(an)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)材(cai)料分(fen)，可以(yi)分(fen)為長(chang)纖維聚(ju)酯濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)(qi)(qi)(qi)，復合纖維濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)(qi)(qi)(qi)，防靜電濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)(qi)(qi)(qi)，阻燃濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)(qi)(qi)(qi)，覆膜(mo)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)(qi)(qi)(qi)，納米濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵器(qi)(qi)(qi)(qi)等。
濾(lv)(lv)(lv)筒式(shi)除塵(chen)(chen)(chen)器(qi)早在(zai)(zai)20世紀70年(nian)代(dai)就(jiu)已經(jing)在(zai)(zai)日本(ben)和歐美一些國家出現(xian)，具有(you)體積小(xiao)，效率高，投資省(sheng)，易(yi)維(wei)護(hu)等(deng)優(you)點(dian)，但因其設(she)備容(rong)量(liang)小(xiao)，難組合成(cheng)(cheng)大(da)(da)風(feng)量(liang)設(she)備，過(guo)濾(lv)(lv)(lv)風(feng)速(su)偏低，應(ying)用(yong)范圍(wei)窄(zhai)，僅在(zai)(zai)糧食、焊(han)接等(deng)行(xing)業應(ying)用(yong)，所以多年(nian)來未能大(da)(da)量(liang)推(tui)廣(guang)。近年(nian)來，隨著(zhu)新技術(shu)、新材料(liao)不斷地發(fa)展，以日本(ben)，美國的公司為代(dai)表，對除塵(chen)(chen)(chen)器(qi)的結(jie)構和濾(lv)(lv)(lv)料(liao)進行(xing)了改進，使(shi)得濾(lv)(lv)(lv)筒除塵(chen)(chen)(chen)器(qi)廣(guang)泛地應(ying)用(yong)于水泥、鋼鐵、電力(li)、食品、冶金、化工(gong)等(deng)工(gong)業領域，整體容(rong)量(liang)增加數倍(bei)，成(cheng)(cheng)為過(guo)濾(lv)(lv)(lv)面(mian)積>2000m2大(da)(da)型除塵(chen)(chen)(chen)器(qi)（GB6719－86類(lei)），是解決(jue)傳統除塵(chen)(chen)(chen)器(qi)對超細粉塵(chen)(chen)(chen)收集難、過(guo)濾(lv)(lv)(lv)風(feng)速(su)高、清灰效果差、濾(lv)(lv)(lv)袋(dai)易(yi)磨損破漏、運行(xing)成(cheng)(cheng)本(ben)高的上(shang)好方(fang)(fang)案，和市(shi)場上(shang)現(xian)有(you)各種袋(dai)式(shi)、靜(jing)電除塵(chen)(chen)(chen)器(qi)相(xiang)比具有(you)有(you)效過(guo)濾(lv)(lv)(lv)面(mian)積大(da)(da)、壓差低、低排放、體積小(xiao)、使(shi)用(yong)壽命(ming)長等(deng)特點(dian)，成(cheng)(cheng)為工(gong)業除塵(chen)(chen)(chen)器(qi)發(fa)展的新方(fang)(fang)向。
濾(lv)筒式除(chu)塵器的結構是由(you)進風管(guan)、排風管(guan)、箱體、灰(hui)斗、清灰(hui)裝置、導流裝置、氣(qi)流分(fen)流分(fen)布板、濾(lv)筒及電控(kong)裝置組成，類似氣(qi)箱脈沖(chong)袋(dai)除(chu)塵結構。
濾筒在(zai)(zai)除塵(chen)器(qi)中的布(bu)(bu)置很重(zhong)要，既(ji)可以垂直布(bu)(bu)置在(zai)(zai)箱(xiang)體花板(ban)上，也可以傾斜布(bu)(bu)置 在(zai)(zai)花板(ban)上，從清灰效(xiao)果看，垂直布(bu)(bu)置較為(wei)(wei)合(he)理。花板(ban)下部為(wei)(wei)過濾室，上部為(wei)(wei)氣箱(xiang)脈沖室。在(zai)(zai)除塵(chen)器(qi)入口處裝有氣流分(fen)布(bu)(bu)板(ban)。
含塵氣(qi)(qi)(qi)體(ti)進(jin)入(ru)除塵器灰斗后(hou)，由于氣(qi)(qi)(qi)流斷面突(tu)然(ran)擴大及(ji)氣(qi)(qi)(qi)流分布板作用，氣(qi)(qi)(qi)流中一部分粗大顆粒在動(dong)和(he)慣性(xing)力作用下沉降(jiang)在灰斗；粒度(du)細、密(mi)度(du)小的塵粒進(jin)入(ru)濾(lv)(lv)塵室(shi)后(hou)，通過布朗擴散和(he)篩濾(lv)(lv)等(deng)組(zu)合效應，使粉塵沉積(ji)在濾(lv)(lv)料表面上，凈(jing)化后(hou)的氣(qi)(qi)(qi)體(ti)進(jin)入(ru)凈(jing)氣(qi)(qi)(qi)室(shi)由排(pai)氣(qi)(qi)(qi)管(guan)經風機排(pai)出。
濾(lv)筒式除塵(chen)(chen)器(qi)的(de)(de)阻(zu)力隨濾(lv)料表面(mian)粉(fen)塵(chen)(chen)層厚度(du)的(de)(de)增(zeng)加而增(zeng)大(da)。阻(zu)力達到某一(yi)(yi)規定值(zhi)時(shi)(shi)進行(xing)清(qing)(qing)(qing)灰(hui)(hui)(hui)。此時(shi)(shi)PLC程序(xu)控制脈(mo)(mo)沖(chong)閥(fa)的(de)(de)啟(qi)閉，首(shou)先一(yi)(yi)分(fen)室提升閥(fa)關閉，將過(guo)濾(lv)氣(qi)流(liu)截斷(duan)，然后電磁脈(mo)(mo)沖(chong)閥(fa)開啟(qi)，壓縮空(kong)氣(qi)以及(ji)短的(de)(de)時(shi)(shi)間在上箱體(ti)內迅(xun)速膨脹，涌入(ru)濾(lv)筒，使濾(lv)筒膨脹變形產生振動，并(bing)在逆向氣(qi)流(liu)沖(chong)刷的(de)(de)作用下(xia)，附著在濾(lv)袋外表面(mian)上的(de)(de)粉(fen)塵(chen)(chen)被剝(bo)離落入(ru)灰(hui)(hui)(hui)斗中。清(qing)(qing)(qing)灰(hui)(hui)(hui)完畢后，電磁脈(mo)(mo)沖(chong)閥(fa)關閉，提升閥(fa)打開，該室又恢復過(guo)濾(lv)狀態。清(qing)(qing)(qing)灰(hui)(hui)(hui)各(ge)室依(yi)次進行(xing)，從一(yi)(yi)室清(qing)(qing)(qing)灰(hui)(hui)(hui)開始至下(xia)一(yi)(yi)次清(qing)(qing)(qing)灰(hui)(hui)(hui)開始為(wei)一(yi)(yi)個清(qing)(qing)(qing)灰(hui)(hui)(hui)周期。脫(tuo)落的(de)(de)粉(fen)塵(chen)(chen)掉(diao)入(ru)灰(hui)(hui)(hui)斗內通過(guo)缷灰(hui)(hui)(hui)閥(fa)排出。
在此過(guo)程中(zhong)必須定期對濾筒進行更(geng)換和(he)清洗，以(yi)確保過(guo)濾效果(guo)和(he)精度，因為在過(guo)濾過(guo)程中(zhong)粉塵除了被阻(zu)隔外還有部分會沉積于濾料表面，增大阻(zu)力，所(suo)以(yi)一般的正確更(geng)換時(shi)間是(shi)三至(zhi)五個月！
