濾筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器以濾筒(tong)(tong)(tong)(tong)(tong)作(zuo)為過(guo)濾元件(jian)所組成或采用脈沖噴(pen)吹的除(chu)(chu)塵(chen)(chen)(chen)器。 濾筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器按安裝(zhuang)方(fang)式分(fen)，可以分(fen)為斜插式，側裝(zhuang)式，吊(diao)裝(zhuang)式，上裝(zhuang)式。 濾筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器按濾筒(tong)(tong)(tong)(tong)(tong)材料分(fen)，可以分(fen)為長纖(xian)維聚酯濾筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器，復合纖(xian)維濾筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器，防(fang)靜電濾筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器，阻燃濾筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器，覆膜(mo)濾筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器，納米濾筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)(chen)器等。
濾(lv)筒式(shi)除(chu)(chu)(chu)塵(chen)器(qi)(qi)早在(zai)(zai)20世紀70年(nian)(nian)代就(jiu)已經(jing)在(zai)(zai)日本(ben)和(he)歐美(mei)一些國(guo)家(jia)出現，具有體(ti)積(ji)(ji)小(xiao)，效率高(gao)，投資省，易維護等(deng)(deng)優點，但因(yin)其設(she)備容量(liang)小(xiao)，難組合成(cheng)(cheng)大(da)風(feng)量(liang)設(she)備，過(guo)濾(lv)風(feng)速偏低，應(ying)(ying)用(yong)(yong)范(fan)圍窄，僅在(zai)(zai)糧(liang)食、焊(han)接等(deng)(deng)行(xing)業應(ying)(ying)用(yong)(yong)，所(suo)以(yi)多年(nian)(nian)來(lai)未能大(da)量(liang)推廣。近年(nian)(nian)來(lai)，隨著新(xin)技術、新(xin)材料(liao)不斷地發展，以(yi)日本(ben)，美(mei)國(guo)的(de)公司為代表(biao)，對除(chu)(chu)(chu)塵(chen)器(qi)(qi)的(de)結構和(he)濾(lv)料(liao)進行(xing)了(le)改進，使得(de)濾(lv)筒除(chu)(chu)(chu)塵(chen)器(qi)(qi)廣泛(fan)地應(ying)(ying)用(yong)(yong)于水泥、鋼鐵、電(dian)(dian)力(li)、食品(pin)、冶金、化(hua)工(gong)等(deng)(deng)工(gong)業領域(yu)，整體(ti)容量(liang)增加數倍(bei)，成(cheng)(cheng)為過(guo)濾(lv)面積(ji)(ji)>2000m2大(da)型除(chu)(chu)(chu)塵(chen)器(qi)(qi)（GB6719－86類），是解決傳統除(chu)(chu)(chu)塵(chen)器(qi)(qi)對超細粉塵(chen)收集難、過(guo)濾(lv)風(feng)速高(gao)、清灰效果差(cha)、濾(lv)袋易磨損破漏、運行(xing)成(cheng)(cheng)本(ben)高(gao)的(de)上好方案，和(he)市場(chang)上現有各種袋式(shi)、靜電(dian)(dian)除(chu)(chu)(chu)塵(chen)器(qi)(qi)相(xiang)比(bi)具有有效過(guo)濾(lv)面積(ji)(ji)大(da)、壓(ya)差(cha)低、低排放、體(ti)積(ji)(ji)小(xiao)、使用(yong)(yong)壽(shou)命(ming)長等(deng)(deng)特點，成(cheng)(cheng)為工(gong)業除(chu)(chu)(chu)塵(chen)器(qi)(qi)發展的(de)新(xin)方向。
濾筒式(shi)除(chu)塵器的結構是由進風管、排風管、箱體、灰斗(dou)、清灰裝置、導(dao)流裝置、氣流分流分布板、濾筒及電(dian)控裝置組成，類(lei)似(si)氣箱脈沖袋(dai)除(chu)塵結構。
濾(lv)筒(tong)在(zai)除塵(chen)器(qi)中(zhong)的布置(zhi)(zhi)(zhi)很重要，既可以垂(chui)直布置(zhi)(zhi)(zhi)在(zai)箱體花板(ban)上(shang)，也可以傾斜(xie)布置(zhi)(zhi)(zhi) 在(zai)花板(ban)上(shang)，從清灰效果看，垂(chui)直布置(zhi)(zhi)(zhi)較為合理。花板(ban)下部(bu)為過濾(lv)室(shi)，上(shang)部(bu)為氣(qi)箱脈沖室(shi)。在(zai)除塵(chen)器(qi)入口處(chu)裝有(you)氣(qi)流(liu)分布板(ban)。
含塵氣(qi)體(ti)進(jin)入(ru)除塵器灰(hui)斗后(hou)，由于氣(qi)流斷面突然擴(kuo)大及氣(qi)流分布(bu)板作用，氣(qi)流中一部(bu)分粗(cu)大顆(ke)粒(li)(li)(li)在動和慣性力作用下沉降在灰(hui)斗；粒(li)(li)(li)度細、密(mi)度小的塵粒(li)(li)(li)進(jin)入(ru)濾塵室后(hou)，通過布(bu)朗擴(kuo)散和篩濾等組合效應，使(shi)粉塵沉積在濾料表面上(shang)，凈化后(hou)的氣(qi)體(ti)進(jin)入(ru)凈氣(qi)室由排氣(qi)管(guan)經風機排出。
濾筒(tong)(tong)式除塵器的(de)阻(zu)力隨濾料表面(mian)(mian)粉(fen)塵層厚度的(de)增(zeng)加而增(zeng)大。阻(zu)力達到(dao)某一(yi)規定值(zhi)時(shi)進(jin)行清灰(hui)(hui)(hui)。此時(shi)PLC程(cheng)序控制脈(mo)沖(chong)閥的(de)啟閉(bi)，首先一(yi)分室(shi)提升閥關閉(bi)，將過(guo)(guo)濾氣流截斷，然(ran)后電磁(ci)脈(mo)沖(chong)閥開(kai)啟，壓縮空氣以及(ji)短的(de)時(shi)間在上(shang)箱體內迅速(su)膨脹(zhang)，涌入濾筒(tong)(tong)，使濾筒(tong)(tong)膨脹(zhang)變形產生振動，并(bing)在逆向氣流沖(chong)刷的(de)作用下，附著在濾袋外(wai)表面(mian)(mian)上(shang)的(de)粉(fen)塵被(bei)剝(bo)離落入灰(hui)(hui)(hui)斗中(zhong)。清灰(hui)(hui)(hui)完(wan)畢后，電磁(ci)脈(mo)沖(chong)閥關閉(bi)，提升閥打開(kai)，該室(shi)又恢復過(guo)(guo)濾狀態。清灰(hui)(hui)(hui)各室(shi)依次進(jin)行，從一(yi)室(shi)清灰(hui)(hui)(hui)開(kai)始至下一(yi)次清灰(hui)(hui)(hui)開(kai)始為(wei)一(yi)個清灰(hui)(hui)(hui)周(zhou)期。脫落的(de)粉(fen)塵掉入灰(hui)(hui)(hui)斗內通過(guo)(guo)缷(xie)灰(hui)(hui)(hui)閥排出。
在此過(guo)程(cheng)中必須定期(qi)對(dui)濾筒進行更換(huan)和清洗，以確保過(guo)濾效果和精度，因為(wei)在過(guo)濾過(guo)程(cheng)中粉塵除了被阻(zu)隔外還有部分會沉積于濾料表面(mian)，增(zeng)大阻(zu)力，所(suo)以一般(ban)的(de)正確更換(huan)時間是三至五個(ge)月！
