濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)器(qi)(qi)(qi)以濾(lv)(lv)筒(tong)(tong)(tong)(tong)作為過濾(lv)(lv)元(yuan)件所組成或采(cai)用脈沖(chong)噴吹的除(chu)塵(chen)(chen)器(qi)(qi)(qi)。 濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)器(qi)(qi)(qi)按安裝(zhuang)(zhuang)方式分，可以分為斜插式，側裝(zhuang)(zhuang)式，吊裝(zhuang)(zhuang)式，上裝(zhuang)(zhuang)式。 濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)器(qi)(qi)(qi)按濾(lv)(lv)筒(tong)(tong)(tong)(tong)材料(liao)分，可以分為長纖(xian)維聚酯濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)器(qi)(qi)(qi)，復合纖(xian)維濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)器(qi)(qi)(qi)，防靜電(dian)濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)器(qi)(qi)(qi)，阻燃(ran)濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)器(qi)(qi)(qi)，覆膜(mo)濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)器(qi)(qi)(qi)，納米濾(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)器(qi)(qi)(qi)等。

濾筒(tong)式(shi)除塵(chen)(chen)(chen)器(qi)早在(zai)20世(shi)紀70年(nian)代就已經(jing)在(zai)日本和歐美一(yi)些國家出現，具有體積小，效(xiao)率高，投資省，易維護等(deng)優點，但(dan)因(yin)其設(she)備容(rong)量小，難(nan)組合成(cheng)大(da)風量設(she)備，過(guo)(guo)濾風速(su)偏低，應(ying)用(yong)范圍窄，僅(jin)在(zai)糧(liang)食(shi)、焊(han)接等(deng)行(xing)業(ye)應(ying)用(yong)，所以(yi)多年(nian)來未能(neng)大(da)量推廣(guang)。近年(nian)來，隨著新技(ji)術、新材(cai)料(liao)不斷地(di)發(fa)展，以(yi)日本，美國的(de)(de)公(gong)司為(wei)(wei)代表，對除塵(chen)(chen)(chen)器(qi)的(de)(de)結構和濾料(liao)進行(xing)了改進，使得濾筒(tong)除塵(chen)(chen)(chen)器(qi)廣(guang)泛地(di)應(ying)用(yong)于水泥、鋼鐵、電(dian)力(li)、食(shi)品、冶金(jin)、化工等(deng)工業(ye)領域，整(zheng)體容(rong)量增加(jia)數倍，成(cheng)為(wei)(wei)過(guo)(guo)濾面積>2000m2大(da)型除塵(chen)(chen)(chen)器(qi)（GB6719－86類），是解決傳統除塵(chen)(chen)(chen)器(qi)對超細粉塵(chen)(chen)(chen)收集(ji)難(nan)、過(guo)(guo)濾風速(su)高、清灰效(xiao)果差、濾袋易磨損(sun)破(po)漏、運(yun)行(xing)成(cheng)本高的(de)(de)上(shang)(shang)好方案，和市場上(shang)(shang)現有各(ge)種袋式(shi)、靜電(dian)除塵(chen)(chen)(chen)器(qi)相比具有有效(xiao)過(guo)(guo)濾面積大(da)、壓差低、低排(pai)放、體積小、使用(yong)壽命(ming)長等(deng)特(te)點，成(cheng)為(wei)(wei)工業(ye)除塵(chen)(chen)(chen)器(qi)發(fa)展的(de)(de)新方向(xiang)。

濾筒式除(chu)(chu)塵器的結構是由進風管(guan)、排風管(guan)、箱(xiang)體(ti)、灰斗(dou)、清灰裝置(zhi)、導(dao)流裝置(zhi)、氣流分(fen)流分(fen)布板、濾筒及電控裝置(zhi)組(zu)成，類似氣箱(xiang)脈沖袋(dai)除(chu)(chu)塵結構。

濾(lv)筒在除塵器中的(de)布置很重要，既可(ke)以(yi)垂(chui)直布置在箱(xiang)體花(hua)(hua)板(ban)上，也可(ke)以(yi)傾(qing)斜布置　在花(hua)(hua)板(ban)上，從清灰效果看，垂(chui)直布置較為(wei)合理。花(hua)(hua)板(ban)下部(bu)為(wei)過濾(lv)室(shi)，上部(bu)為(wei)氣(qi)箱(xiang)脈沖室(shi)。在除塵器入(ru)口處裝有氣(qi)流分布板(ban)。

含塵(chen)氣體進入(ru)除塵(chen)器灰(hui)(hui)斗(dou)后，由于氣流斷(duan)面突然擴大及氣流分布板(ban)作(zuo)用，氣流中一部分粗大顆粒(li)在動和(he)慣性力(li)作(zuo)用下沉降(jiang)在灰(hui)(hui)斗(dou)；粒(li)度細、密度小的塵(chen)粒(li)進入(ru)濾塵(chen)室(shi)后，通過(guo)布朗擴散和(he)篩濾等組(zu)合效應，使(shi)粉(fen)塵(chen)沉積(ji)在濾料表面上，凈化(hua)后的氣體進入(ru)凈氣室(shi)由排(pai)氣管經(jing)風機排(pai)出(chu)。

濾(lv)(lv)筒式除塵(chen)器(qi)的(de)阻力(li)隨(sui)濾(lv)(lv)料表面(mian)粉(fen)塵(chen)層厚度的(de)增(zeng)加而增(zeng)大(da)。阻力(li)達到某一(yi)(yi)(yi)規(gui)定(ding)值時(shi)進行清(qing)灰(hui)(hui)(hui)(hui)。此時(shi)PLC程序控制脈(mo)沖(chong)(chong)閥的(de)啟(qi)閉，首先(xian)一(yi)(yi)(yi)分(fen)室(shi)(shi)提(ti)升閥關(guan)閉，將過(guo)濾(lv)(lv)氣流截斷，然后電(dian)(dian)磁(ci)脈(mo)沖(chong)(chong)閥開(kai)啟(qi)，壓縮空(kong)氣以及短的(de)時(shi)間在(zai)上箱體(ti)內(nei)迅(xun)速膨脹，涌入濾(lv)(lv)筒，使濾(lv)(lv)筒膨脹變(bian)形產生振(zhen)動，并在(zai)逆向氣流沖(chong)(chong)刷的(de)作用下(xia)，附(fu)著在(zai)濾(lv)(lv)袋外(wai)表面(mian)上的(de)粉(fen)塵(chen)被剝離落入灰(hui)(hui)(hui)(hui)斗中。清(qing)灰(hui)(hui)(hui)(hui)完畢(bi)后，電(dian)(dian)磁(ci)脈(mo)沖(chong)(chong)閥關(guan)閉，提(ti)升閥打開(kai)，該室(shi)(shi)又(you)恢復過(guo)濾(lv)(lv)狀態。清(qing)灰(hui)(hui)(hui)(hui)各室(shi)(shi)依次進行，從一(yi)(yi)(yi)室(shi)(shi)清(qing)灰(hui)(hui)(hui)(hui)開(kai)始(shi)至下(xia)一(yi)(yi)(yi)次清(qing)灰(hui)(hui)(hui)(hui)開(kai)始(shi)為一(yi)(yi)(yi)個清(qing)灰(hui)(hui)(hui)(hui)周期。脫落的(de)粉(fen)塵(chen)掉入灰(hui)(hui)(hui)(hui)斗內(nei)通過(guo)缷(xie)灰(hui)(hui)(hui)(hui)閥排出。

在此過(guo)(guo)程(cheng)中(zhong)必須定期對濾筒進行更(geng)換和清洗(xi)，以(yi)確保(bao)過(guo)(guo)濾效果和精度，因為在過(guo)(guo)濾過(guo)(guo)程(cheng)中(zhong)粉塵除了(le)被阻隔外還有部分會沉積于濾料表面，增(zeng)大阻力，所以(yi)一般的正確更(geng)換時間(jian)是三(san)至五個月！