濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)以(yi)濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)作為過濾(lv)(lv)(lv)元件所組成(cheng)或采用脈沖噴吹的除(chu)(chu)塵(chen)(chen)器(qi)(qi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)按安裝(zhuang)(zhuang)方式(shi)分(fen)，可以(yi)分(fen)為斜(xie)插(cha)式(shi)，側裝(zhuang)(zhuang)式(shi)，吊(diao)裝(zhuang)(zhuang)式(shi)，上裝(zhuang)(zhuang)式(shi)。 濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)按濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)材料分(fen)，可以(yi)分(fen)為長纖(xian)維聚酯濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)，復合纖(xian)維濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)，防靜電濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)，阻燃濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)，覆膜濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)，納米濾(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)(qi)等。
濾(lv)筒式(shi)除(chu)(chu)塵器(qi)(qi)早在(zai)(zai)20世(shi)紀70年(nian)(nian)代(dai)就已經(jing)在(zai)(zai)日本和(he)歐(ou)美一(yi)些國家出現，具(ju)有體(ti)(ti)積(ji)小(xiao)，效(xiao)率高(gao)，投資省，易(yi)(yi)維護等優點，但因其設備容量小(xiao)，難組合成(cheng)大(da)風(feng)量設備，過濾(lv)風(feng)速偏低，應(ying)用范圍窄，僅(jin)在(zai)(zai)糧食(shi)、焊接等行(xing)業(ye)應(ying)用，所(suo)以(yi)多年(nian)(nian)來未能大(da)量推廣。近年(nian)(nian)來，隨著新(xin)技術、新(xin)材(cai)料(liao)不(bu)斷地(di)發(fa)展，以(yi)日本，美國的公司為代(dai)表，對(dui)除(chu)(chu)塵器(qi)(qi)的結構和(he)濾(lv)料(liao)進行(xing)了改進，使得濾(lv)筒除(chu)(chu)塵器(qi)(qi)廣泛地(di)應(ying)用于水(shui)泥、鋼鐵、電(dian)力、食(shi)品、冶金(jin)、化(hua)工(gong)(gong)等工(gong)(gong)業(ye)領域，整體(ti)(ti)容量增(zeng)加數(shu)倍，成(cheng)為過濾(lv)面積(ji)>2000m2大(da)型除(chu)(chu)塵器(qi)(qi)（GB6719－86類(lei)），是解(jie)決傳統除(chu)(chu)塵器(qi)(qi)對(dui)超細粉塵收集難、過濾(lv)風(feng)速高(gao)、清灰效(xiao)果(guo)差(cha)、濾(lv)袋易(yi)(yi)磨損(sun)破漏、運行(xing)成(cheng)本高(gao)的上好方案(an)，和(he)市場上現有各(ge)種袋式(shi)、靜電(dian)除(chu)(chu)塵器(qi)(qi)相比具(ju)有有效(xiao)過濾(lv)面積(ji)大(da)、壓差(cha)低、低排放、體(ti)(ti)積(ji)小(xiao)、使用壽命長等特點，成(cheng)為工(gong)(gong)業(ye)除(chu)(chu)塵器(qi)(qi)發(fa)展的新(xin)方向。
濾筒(tong)式除塵(chen)器的結構(gou)是(shi)由進風管(guan)、排風管(guan)、箱(xiang)體、灰斗(dou)、清(qing)灰裝置(zhi)、導流(liu)裝置(zhi)、氣(qi)(qi)流(liu)分(fen)流(liu)分(fen)布(bu)板、濾筒(tong)及電控(kong)裝置(zhi)組成(cheng)，類似氣(qi)(qi)箱(xiang)脈沖袋除塵(chen)結構(gou)。
濾(lv)筒在除塵(chen)器中(zhong)的布置(zhi)很重要，既可(ke)以(yi)垂直(zhi)布置(zhi)在箱體(ti)花板(ban)上(shang)，也(ye)可(ke)以(yi)傾(qing)斜布置(zhi) 在花板(ban)上(shang)，從清灰效(xiao)果看，垂直(zhi)布置(zhi)較(jiao)為(wei)合理。花板(ban)下部為(wei)過濾(lv)室(shi)，上(shang)部為(wei)氣箱脈沖(chong)室(shi)。在除塵(chen)器入口處裝(zhuang)有(you)氣流分(fen)布板(ban)。
含塵氣體進(jin)(jin)入除塵器灰斗(dou)(dou)后，由(you)于氣流斷面(mian)突然擴大(da)及氣流分布(bu)板作用(yong)，氣流中(zhong)一部分粗大(da)顆粒在(zai)動和慣性力作用(yong)下沉(chen)(chen)降在(zai)灰斗(dou)(dou)；粒度細(xi)、密度小的塵粒進(jin)(jin)入濾塵室后，通過布(bu)朗擴散(san)和篩濾等組(zu)合效(xiao)應，使粉塵沉(chen)(chen)積在(zai)濾料表面(mian)上，凈化后的氣體進(jin)(jin)入凈氣室由(you)排氣管經風(feng)機(ji)排出。
濾(lv)筒式(shi)除塵(chen)器的(de)阻(zu)力隨(sui)濾(lv)料表面(mian)粉塵(chen)層厚度的(de)增加而增大。阻(zu)力達(da)到某一規定值時(shi)進(jin)行清(qing)灰(hui)(hui)。此時(shi)PLC程(cheng)序控制脈沖閥(fa)的(de)啟閉(bi)，首先一分(fen)室(shi)(shi)(shi)提升閥(fa)關(guan)閉(bi)，將過濾(lv)氣流(liu)截斷，然后(hou)電磁脈沖閥(fa)開(kai)啟，壓縮(suo)空氣以及(ji)短(duan)的(de)時(shi)間在(zai)上(shang)箱體內(nei)(nei)迅速膨(peng)脹(zhang)，涌入濾(lv)筒，使濾(lv)筒膨(peng)脹(zhang)變形(xing)產生振(zhen)動，并(bing)在(zai)逆向氣流(liu)沖刷的(de)作用下，附著在(zai)濾(lv)袋(dai)外表面(mian)上(shang)的(de)粉塵(chen)被(bei)剝離落(luo)入灰(hui)(hui)斗中。清(qing)灰(hui)(hui)完畢后(hou)，電磁脈沖閥(fa)關(guan)閉(bi)，提升閥(fa)打(da)開(kai)，該室(shi)(shi)(shi)又恢復過濾(lv)狀態。清(qing)灰(hui)(hui)各室(shi)(shi)(shi)依次(ci)進(jin)行，從一室(shi)(shi)(shi)清(qing)灰(hui)(hui)開(kai)始(shi)至下一次(ci)清(qing)灰(hui)(hui)開(kai)始(shi)為(wei)一個清(qing)灰(hui)(hui)周期。脫落(luo)的(de)粉塵(chen)掉入灰(hui)(hui)斗內(nei)(nei)通過缷灰(hui)(hui)閥(fa)排出(chu)。
在(zai)此過(guo)程中必(bi)須定期對濾(lv)筒進行更換和清(qing)洗，以確(que)(que)保(bao)過(guo)濾(lv)效(xiao)果和精度，因(yin)為在(zai)過(guo)濾(lv)過(guo)程中粉塵除(chu)了(le)被阻(zu)隔外還有部(bu)分會沉積(ji)于濾(lv)料(liao)表面，增大阻(zu)力，所以一般的正確(que)(que)更換時間是三(san)至五個月(yue)！
