濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)以濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)作為(wei)過濾(lv)(lv)(lv)(lv)(lv)元件所組成或采(cai)用脈沖噴吹(chui)的除(chu)(chu)塵(chen)(chen)器(qi)。 濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)按安(an)裝(zhuang)方式(shi)(shi)(shi)分，可(ke)以分為(wei)斜插式(shi)(shi)(shi)，側裝(zhuang)式(shi)(shi)(shi)，吊裝(zhuang)式(shi)(shi)(shi)，上裝(zhuang)式(shi)(shi)(shi)。 濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)按濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)材料分，可(ke)以分為(wei)長纖維聚酯(zhi)濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，復合纖維濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，防靜電(dian)濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，阻(zu)燃濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，覆(fu)膜濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)，納米濾(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)除(chu)(chu)塵(chen)(chen)器(qi)等。
濾(lv)筒式除塵(chen)器(qi)早在(zai)20世紀70年(nian)(nian)代就已經在(zai)日本(ben)和歐美一些國家出現，具(ju)有(you)體積小，效(xiao)率高，投資省，易維護等優點，但因其設備容(rong)量(liang)小，難組合(he)成(cheng)(cheng)大風(feng)量(liang)設備，過(guo)(guo)濾(lv)風(feng)速偏低，應用范圍窄(zhai)，僅(jin)在(zai)糧食(shi)、焊接等行業(ye)應用，所以多年(nian)(nian)來(lai)未能大量(liang)推廣(guang)。近年(nian)(nian)來(lai)，隨著(zhu)新(xin)技術、新(xin)材料不斷地發展，以日本(ben)，美國的公司為(wei)代表，對(dui)(dui)除塵(chen)器(qi)的結構(gou)和濾(lv)料進行了改(gai)進，使得濾(lv)筒除塵(chen)器(qi)廣(guang)泛(fan)地應用于水泥、鋼鐵、電力(li)、食(shi)品、冶金、化工(gong)等工(gong)業(ye)領(ling)域，整體容(rong)量(liang)增(zeng)加數倍，成(cheng)(cheng)為(wei)過(guo)(guo)濾(lv)面積>2000m2大型除塵(chen)器(qi)（GB6719－86類(lei)），是解(jie)決傳統除塵(chen)器(qi)對(dui)(dui)超細粉塵(chen)收集難、過(guo)(guo)濾(lv)風(feng)速高、清灰效(xiao)果差(cha)、濾(lv)袋(dai)易磨損(sun)破(po)漏(lou)、運(yun)行成(cheng)(cheng)本(ben)高的上(shang)好方案(an)，和市場上(shang)現有(you)各種袋(dai)式、靜電除塵(chen)器(qi)相比具(ju)有(you)有(you)效(xiao)過(guo)(guo)濾(lv)面積大、壓差(cha)低、低排放、體積小、使用壽命(ming)長等特點，成(cheng)(cheng)為(wei)工(gong)業(ye)除塵(chen)器(qi)發展的新(xin)方向。
濾筒(tong)式除塵器(qi)的結構(gou)是由進風管(guan)、排風管(guan)、箱(xiang)體(ti)、灰斗(dou)、清灰裝(zhuang)置(zhi)(zhi)、導(dao)流(liu)裝(zhuang)置(zhi)(zhi)、氣(qi)流(liu)分流(liu)分布板(ban)、濾筒(tong)及(ji)電控(kong)裝(zhuang)置(zhi)(zhi)組成，類似(si)氣(qi)箱(xiang)脈沖(chong)袋(dai)除塵結構(gou)。
濾(lv)(lv)筒在(zai)除塵(chen)器(qi)中(zhong)的布(bu)置很重要，既(ji)可以(yi)垂直布(bu)置在(zai)箱(xiang)(xiang)體花(hua)(hua)板(ban)上(shang)，也可以(yi)傾(qing)斜(xie)布(bu)置 在(zai)花(hua)(hua)板(ban)上(shang)，從清灰(hui)效果看(kan)，垂直布(bu)置較為(wei)(wei)合理。花(hua)(hua)板(ban)下部(bu)為(wei)(wei)過濾(lv)(lv)室(shi)，上(shang)部(bu)為(wei)(wei)氣箱(xiang)(xiang)脈沖(chong)室(shi)。在(zai)除塵(chen)器(qi)入口處裝有(you)氣流分布(bu)板(ban)。
含(han)塵氣(qi)(qi)體進(jin)入除塵器灰斗(dou)后(hou)，由(you)于(yu)氣(qi)(qi)流斷面(mian)突然(ran)擴大(da)及氣(qi)(qi)流分(fen)布板作(zuo)(zuo)用，氣(qi)(qi)流中一部分(fen)粗大(da)顆粒在動和慣(guan)性力作(zuo)(zuo)用下沉降(jiang)在灰斗(dou)；粒度細、密度小的塵粒進(jin)入濾塵室(shi)后(hou)，通過布朗(lang)擴散和篩濾等(deng)組合效應，使粉塵沉積在濾料表面(mian)上，凈化后(hou)的氣(qi)(qi)體進(jin)入凈氣(qi)(qi)室(shi)由(you)排(pai)氣(qi)(qi)管(guan)經(jing)風機排(pai)出。
濾(lv)(lv)(lv)筒(tong)式除塵器的阻(zu)力(li)(li)隨(sui)濾(lv)(lv)(lv)料(liao)表(biao)面(mian)(mian)粉塵層厚度的增(zeng)加而(er)增(zeng)大。阻(zu)力(li)(li)達到某一規定(ding)值(zhi)時進(jin)(jin)行(xing)清(qing)(qing)灰(hui)(hui)(hui)。此(ci)時PLC程(cheng)序(xu)控制脈沖(chong)閥(fa)的啟閉，首(shou)先一分室提升閥(fa)關閉，將過(guo)濾(lv)(lv)(lv)氣(qi)流截斷，然后電磁(ci)脈沖(chong)閥(fa)開啟，壓縮空氣(qi)以及短的時間在(zai)上(shang)箱體內(nei)迅速膨(peng)脹，涌入(ru)(ru)濾(lv)(lv)(lv)筒(tong)，使濾(lv)(lv)(lv)筒(tong)膨(peng)脹變形產生振動，并在(zai)逆向(xiang)氣(qi)流沖(chong)刷的作用下(xia)，附著在(zai)濾(lv)(lv)(lv)袋外表(biao)面(mian)(mian)上(shang)的粉塵被剝(bo)離落(luo)入(ru)(ru)灰(hui)(hui)(hui)斗(dou)中(zhong)。清(qing)(qing)灰(hui)(hui)(hui)完畢后，電磁(ci)脈沖(chong)閥(fa)關閉，提升閥(fa)打開，該室又恢復過(guo)濾(lv)(lv)(lv)狀(zhuang)態。清(qing)(qing)灰(hui)(hui)(hui)各室依次進(jin)(jin)行(xing)，從一室清(qing)(qing)灰(hui)(hui)(hui)開始至下(xia)一次清(qing)(qing)灰(hui)(hui)(hui)開始為(wei)一個清(qing)(qing)灰(hui)(hui)(hui)周(zhou)期(qi)。脫落(luo)的粉塵掉入(ru)(ru)灰(hui)(hui)(hui)斗(dou)內(nei)通過(guo)缷灰(hui)(hui)(hui)閥(fa)排出。
在此(ci)過(guo)程(cheng)中必須定期對濾筒進(jin)行更換和清洗，以(yi)確保過(guo)濾效果和精度，因(yin)為(wei)在過(guo)濾過(guo)程(cheng)中粉塵除了被阻(zu)隔(ge)外還有部分會沉積于濾料表面，增(zeng)大(da)阻(zu)力，所以(yi)一般的正確更換時(shi)間是(shi)三至(zhi)五個(ge)月！
