濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)以(yi)濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)作(zuo)為過濾(lv)元(yuan)件所組(zu)成(cheng)或(huo)采用脈(mo)沖噴吹的除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)。 濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)按(an)安裝(zhuang)方式(shi)(shi)分，可以(yi)分為斜(xie)插式(shi)(shi)，側(ce)裝(zhuang)式(shi)(shi)，吊裝(zhuang)式(shi)(shi)，上裝(zhuang)式(shi)(shi)。 濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)按(an)濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)材(cai)料分，可以(yi)分為長纖(xian)維聚酯濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，復合纖(xian)維濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，防靜(jing)電(dian)濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，阻燃濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，覆膜濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)，納米濾(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)等。
濾(lv)(lv)筒式(shi)除(chu)(chu)塵器(qi)(qi)(qi)早在(zai)20世紀70年代就已經在(zai)日本和歐美一些國(guo)家出現(xian)，具有體積(ji)小(xiao)(xiao)，效(xiao)率(lv)高(gao)，投資省，易維(wei)護等優(you)點(dian)，但因(yin)其設備容量(liang)小(xiao)(xiao)，難組合成大風量(liang)設備，過濾(lv)(lv)風速偏低，應(ying)用(yong)(yong)范圍窄，僅在(zai)糧食、焊(han)接等行業應(ying)用(yong)(yong)，所以多(duo)年來未能大量(liang)推廣。近年來，隨著新(xin)(xin)技術、新(xin)(xin)材料不斷地發(fa)展(zhan)，以日本，美國(guo)的公司為代表，對(dui)除(chu)(chu)塵器(qi)(qi)(qi)的結構(gou)和濾(lv)(lv)料進行了改進，使得濾(lv)(lv)筒除(chu)(chu)塵器(qi)(qi)(qi)廣泛(fan)地應(ying)用(yong)(yong)于水泥、鋼鐵、電力、食品、冶金(jin)、化工(gong)等工(gong)業領域，整體容量(liang)增加(jia)數倍，成為過濾(lv)(lv)面積(ji)>2000m2大型除(chu)(chu)塵器(qi)(qi)(qi)（GB6719－86類），是(shi)解決傳統除(chu)(chu)塵器(qi)(qi)(qi)對(dui)超細粉塵收集難、過濾(lv)(lv)風速高(gao)、清灰效(xiao)果差、濾(lv)(lv)袋易磨損破漏(lou)、運行成本高(gao)的上好方案，和市場上現(xian)有各種(zhong)袋式(shi)、靜電除(chu)(chu)塵器(qi)(qi)(qi)相比具有有效(xiao)過濾(lv)(lv)面積(ji)大、壓差低、低排放、體積(ji)小(xiao)(xiao)、使用(yong)(yong)壽命長(chang)等特點(dian)，成為工(gong)業除(chu)(chu)塵器(qi)(qi)(qi)發(fa)展(zhan)的新(xin)(xin)方向。
濾筒(tong)(tong)式除(chu)塵器(qi)的結構是由(you)進風(feng)管、排(pai)風(feng)管、箱體、灰斗、清灰裝(zhuang)置(zhi)、導流(liu)裝(zhuang)置(zhi)、氣流(liu)分流(liu)分布板、濾筒(tong)(tong)及電(dian)控裝(zhuang)置(zhi)組成，類似氣箱脈沖袋(dai)除(chu)塵結構。
濾(lv)筒在除(chu)塵器(qi)中的布(bu)置很重(zhong)要，既(ji)可(ke)以(yi)(yi)垂(chui)直(zhi)布(bu)置在箱體花板(ban)(ban)上，也可(ke)以(yi)(yi)傾(qing)斜(xie)布(bu)置 在花板(ban)(ban)上，從清灰效果看(kan)，垂(chui)直(zhi)布(bu)置較(jiao)為合理。花板(ban)(ban)下部為過濾(lv)室，上部為氣箱脈沖室。在除(chu)塵器(qi)入口處裝(zhuang)有氣流(liu)分布(bu)板(ban)(ban)。
含塵(chen)(chen)氣(qi)(qi)體(ti)進入(ru)除塵(chen)(chen)器灰(hui)斗后，由于氣(qi)(qi)流斷面突(tu)然擴大及氣(qi)(qi)流分(fen)布(bu)板(ban)作用，氣(qi)(qi)流中(zhong)一部(bu)分(fen)粗大顆粒在(zai)動和(he)慣性力作用下沉降在(zai)灰(hui)斗；粒度細、密(mi)度小的(de)塵(chen)(chen)粒進入(ru)濾塵(chen)(chen)室后，通過布(bu)朗擴散和(he)篩濾等組合效應，使粉塵(chen)(chen)沉積(ji)在(zai)濾料表面上，凈化后的(de)氣(qi)(qi)體(ti)進入(ru)凈氣(qi)(qi)室由排氣(qi)(qi)管(guan)經風機排出(chu)。
濾(lv)(lv)筒式除塵器的(de)阻(zu)力(li)隨濾(lv)(lv)料表面粉塵層厚(hou)度的(de)增加(jia)而(er)增大。阻(zu)力(li)達到某一(yi)規定(ding)值時進行(xing)清(qing)(qing)(qing)灰(hui)(hui)(hui)。此時PLC程序(xu)控(kong)制脈(mo)沖(chong)(chong)閥的(de)啟(qi)閉，首先一(yi)分(fen)室(shi)提升閥關(guan)閉，將過濾(lv)(lv)氣流(liu)截斷，然后電磁(ci)脈(mo)沖(chong)(chong)閥開(kai)啟(qi)，壓縮(suo)空氣以及短的(de)時間在上(shang)(shang)箱體(ti)內(nei)迅速膨脹，涌入(ru)濾(lv)(lv)筒，使(shi)濾(lv)(lv)筒膨脹變形(xing)產生振動，并在逆向(xiang)氣流(liu)沖(chong)(chong)刷的(de)作(zuo)用下，附著在濾(lv)(lv)袋(dai)外表面上(shang)(shang)的(de)粉塵被剝(bo)離落(luo)入(ru)灰(hui)(hui)(hui)斗中。清(qing)(qing)(qing)灰(hui)(hui)(hui)完畢后，電磁(ci)脈(mo)沖(chong)(chong)閥關(guan)閉，提升閥打開(kai)，該室(shi)又恢復過濾(lv)(lv)狀(zhuang)態(tai)。清(qing)(qing)(qing)灰(hui)(hui)(hui)各室(shi)依次進行(xing)，從一(yi)室(shi)清(qing)(qing)(qing)灰(hui)(hui)(hui)開(kai)始(shi)(shi)至下一(yi)次清(qing)(qing)(qing)灰(hui)(hui)(hui)開(kai)始(shi)(shi)為一(yi)個(ge)清(qing)(qing)(qing)灰(hui)(hui)(hui)周期。脫落(luo)的(de)粉塵掉入(ru)灰(hui)(hui)(hui)斗內(nei)通過缷灰(hui)(hui)(hui)閥排(pai)出。
在此(ci)過程(cheng)中(zhong)必須定期對濾(lv)筒進行(xing)更換和(he)清洗，以(yi)確(que)保過濾(lv)效果(guo)和(he)精度，因(yin)為在過濾(lv)過程(cheng)中(zhong)粉塵除了被阻隔外還有(you)部分會沉積于濾(lv)料表面，增大阻力，所以(yi)一(yi)般的正確(que)更換時間(jian)是三至五(wu)個月！
