濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵器(qi)以濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)作為(wei)過濾(lv)(lv)(lv)(lv)(lv)元件所組成或采用脈(mo)沖(chong)噴吹的除(chu)(chu)塵器(qi)。 濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵器(qi)按安裝方式(shi)分(fen)，可(ke)以分(fen)為(wei)斜插式(shi)，側(ce)裝式(shi)，吊(diao)裝式(shi)，上(shang)裝式(shi)。 濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵器(qi)按濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)材料分(fen)，可(ke)以分(fen)為(wei)長(chang)纖維(wei)聚(ju)酯濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵器(qi)，復(fu)合纖維(wei)濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵器(qi)，防靜電濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵器(qi)，阻燃濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵器(qi)，覆膜濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵器(qi)，納米濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)(tong)除(chu)(chu)塵器(qi)等。
濾(lv)筒(tong)式除(chu)塵器(qi)早在20世(shi)紀70年(nian)代就已經在日本(ben)(ben)和(he)(he)歐美一些(xie)國(guo)家出現，具有體(ti)積(ji)小，效(xiao)(xiao)率(lv)高，投資省，易(yi)維護等(deng)(deng)優點，但因其設備容量(liang)(liang)小，難組合成(cheng)(cheng)大(da)風量(liang)(liang)設備，過濾(lv)風速偏低，應用范圍窄(zhai)，僅在糧食、焊(han)接(jie)等(deng)(deng)行(xing)業應用，所以多年(nian)來未能大(da)量(liang)(liang)推廣。近(jin)年(nian)來，隨著新技術、新材料(liao)不斷地(di)發(fa)展，以日本(ben)(ben)，美國(guo)的公(gong)司為(wei)(wei)代表，對除(chu)塵器(qi)的結構(gou)和(he)(he)濾(lv)料(liao)進(jin)行(xing)了改進(jin)，使得(de)濾(lv)筒(tong)除(chu)塵器(qi)廣泛地(di)應用于水(shui)泥、鋼鐵、電力、食品、冶(ye)金、化工等(deng)(deng)工業領(ling)域，整(zheng)體(ti)容量(liang)(liang)增加數倍，成(cheng)(cheng)為(wei)(wei)過濾(lv)面積(ji)>2000m2大(da)型除(chu)塵器(qi)（GB6719－86類(lei)），是解決傳(chuan)統除(chu)塵器(qi)對超細粉塵收集難、過濾(lv)風速高、清灰(hui)效(xiao)(xiao)果差、濾(lv)袋(dai)易(yi)磨損破漏(lou)、運行(xing)成(cheng)(cheng)本(ben)(ben)高的上好方(fang)案，和(he)(he)市場上現有各種(zhong)袋(dai)式、靜電除(chu)塵器(qi)相比具有有效(xiao)(xiao)過濾(lv)面積(ji)大(da)、壓差低、低排放、體(ti)積(ji)小、使用壽命(ming)長等(deng)(deng)特點，成(cheng)(cheng)為(wei)(wei)工業除(chu)塵器(qi)發(fa)展的新方(fang)向。
濾(lv)筒式除塵(chen)器的結(jie)構(gou)是(shi)由(you)進風管、排(pai)風管、箱體、灰(hui)斗、清灰(hui)裝(zhuang)置(zhi)、導流(liu)裝(zhuang)置(zhi)、氣流(liu)分流(liu)分布板、濾(lv)筒及電控裝(zhuang)置(zhi)組(zu)成，類似氣箱脈沖(chong)袋除塵(chen)結(jie)構(gou)。
濾筒(tong)在除(chu)塵器(qi)中的布(bu)置很(hen)重要(yao)，既(ji)可以垂直(zhi)布(bu)置在箱體(ti)花板(ban)上，也可以傾斜布(bu)置 在花板(ban)上，從清(qing)灰效果(guo)看(kan)，垂直(zhi)布(bu)置較為(wei)合理。花板(ban)下(xia)部為(wei)過濾室，上部為(wei)氣(qi)箱脈(mo)沖室。在除(chu)塵器(qi)入口處(chu)裝有氣(qi)流分(fen)布(bu)板(ban)。
含塵(chen)氣(qi)體(ti)進入(ru)除塵(chen)器灰斗(dou)后(hou)(hou)，由(you)于氣(qi)流(liu)斷面突(tu)然擴大及氣(qi)流(liu)分布板作用(yong)，氣(qi)流(liu)中一部分粗大顆(ke)粒在動和慣(guan)性(xing)力作用(yong)下沉降在灰斗(dou)；粒度(du)細、密度(du)小的塵(chen)粒進入(ru)濾塵(chen)室(shi)后(hou)(hou)，通過(guo)布朗擴散和篩濾等組合效應(ying)，使粉塵(chen)沉積在濾料表面上，凈化后(hou)(hou)的氣(qi)體(ti)進入(ru)凈氣(qi)室(shi)由(you)排氣(qi)管經風機排出。
濾筒(tong)式除(chu)塵(chen)器的(de)(de)阻力隨濾料表面粉(fen)塵(chen)層厚度的(de)(de)增加而增大。阻力達到某一規定值時(shi)進行清(qing)灰。此時(shi)PLC程序(xu)控制(zhi)脈(mo)(mo)沖閥(fa)的(de)(de)啟(qi)閉，首先一分室提升(sheng)閥(fa)關(guan)閉，將過(guo)濾氣(qi)流截斷，然后電磁脈(mo)(mo)沖閥(fa)開(kai)(kai)啟(qi)，壓縮空(kong)氣(qi)以(yi)及(ji)短的(de)(de)時(shi)間在(zai)上(shang)箱(xiang)體內(nei)迅(xun)速膨脹，涌入(ru)濾筒(tong)，使濾筒(tong)膨脹變形(xing)產生振(zhen)動(dong)，并在(zai)逆向氣(qi)流沖刷的(de)(de)作用下，附著在(zai)濾袋外表面上(shang)的(de)(de)粉(fen)塵(chen)被剝離落(luo)入(ru)灰斗中(zhong)。清(qing)灰完畢后，電磁脈(mo)(mo)沖閥(fa)關(guan)閉，提升(sheng)閥(fa)打開(kai)(kai)，該室又恢復過(guo)濾狀態。清(qing)灰各(ge)室依次(ci)進行，從一室清(qing)灰開(kai)(kai)始至下一次(ci)清(qing)灰開(kai)(kai)始為一個清(qing)灰周期。脫落(luo)的(de)(de)粉(fen)塵(chen)掉入(ru)灰斗內(nei)通過(guo)缷灰閥(fa)排出。
在(zai)此過(guo)(guo)程中(zhong)必(bi)須定(ding)期對濾筒進(jin)行更換和(he)清(qing)洗(xi)，以確(que)保過(guo)(guo)濾效(xiao)果和(he)精度，因為在(zai)過(guo)(guo)濾過(guo)(guo)程中(zhong)粉塵除了被(bei)阻隔外還有(you)部(bu)分會(hui)沉積于濾料表面，增大阻力，所以一般的正確(que)更換時間是三至五(wu)個月(yue)！
