濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)以(yi)(yi)濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)作為過濾(lv)(lv)(lv)(lv)元(yuan)件所組成(cheng)或采(cai)用脈沖噴吹(chui)的(de)除(chu)塵(chen)(chen)(chen)器(qi)。 濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)按安裝方式(shi)分(fen)，可以(yi)(yi)分(fen)為斜插式(shi)，側裝式(shi)，吊(diao)裝式(shi)，上(shang)裝式(shi)。 濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)按濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)材料分(fen)，可以(yi)(yi)分(fen)為長纖(xian)維聚酯濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)，復合(he)纖(xian)維濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)，防(fang)靜電濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)，阻燃濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)，覆膜濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)，納米濾(lv)(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)除(chu)塵(chen)(chen)(chen)器(qi)等。
濾(lv)筒式(shi)除塵(chen)(chen)器早(zao)在(zai)(zai)20世紀70年(nian)(nian)代就已(yi)經在(zai)(zai)日本(ben)和歐(ou)美一些(xie)國家(jia)出現(xian)，具有(you)(you)體積(ji)小，效率高(gao)，投(tou)資(zi)省，易(yi)維護(hu)等優(you)點(dian)，但因其設備容量小，難組合成(cheng)大風量設備，過(guo)(guo)(guo)濾(lv)風速偏低(di)(di)，應用(yong)(yong)范圍窄，僅(jin)在(zai)(zai)糧食、焊(han)接(jie)等行(xing)業(ye)應用(yong)(yong)，所以多年(nian)(nian)來(lai)未能(neng)大量推廣。近年(nian)(nian)來(lai)，隨(sui)著(zhu)新技術(shu)、新材料不斷地發(fa)展，以日本(ben)，美國的(de)公司為(wei)代表，對除塵(chen)(chen)器的(de)結構和濾(lv)料進(jin)行(xing)了(le)改進(jin)，使得濾(lv)筒除塵(chen)(chen)器廣泛(fan)地應用(yong)(yong)于(yu)水泥、鋼鐵(tie)、電(dian)力、食品、冶金、化工等工業(ye)領(ling)域，整體容量增(zeng)加數倍，成(cheng)為(wei)過(guo)(guo)(guo)濾(lv)面積(ji)>2000m2大型除塵(chen)(chen)器（GB6719－86類），是(shi)解(jie)決傳統除塵(chen)(chen)器對超細(xi)粉塵(chen)(chen)收集難、過(guo)(guo)(guo)濾(lv)風速高(gao)、清灰效果差、濾(lv)袋易(yi)磨(mo)損(sun)破漏、運(yun)行(xing)成(cheng)本(ben)高(gao)的(de)上好方案，和市(shi)場上現(xian)有(you)(you)各(ge)種(zhong)袋式(shi)、靜電(dian)除塵(chen)(chen)器相比(bi)具有(you)(you)有(you)(you)效過(guo)(guo)(guo)濾(lv)面積(ji)大、壓差低(di)(di)、低(di)(di)排放(fang)、體積(ji)小、使用(yong)(yong)壽命長等特點(dian)，成(cheng)為(wei)工業(ye)除塵(chen)(chen)器發(fa)展的(de)新方向(xiang)。
濾(lv)筒式除塵器的結(jie)構是由進風(feng)管(guan)、排風(feng)管(guan)、箱體、灰斗、清(qing)灰裝(zhuang)(zhuang)置、導(dao)流裝(zhuang)(zhuang)置、氣流分流分布板、濾(lv)筒及電控裝(zhuang)(zhuang)置組(zu)成，類(lei)似氣箱脈沖袋除塵結(jie)構。
濾筒在除塵器中(zhong)的(de)布置很重(zhong)要，既可(ke)以(yi)垂直(zhi)布置在箱(xiang)體花板上(shang)(shang)(shang)，也可(ke)以(yi)傾斜布置 在花板上(shang)(shang)(shang)，從清(qing)灰效(xiao)果看，垂直(zhi)布置較為合理。花板下部(bu)為過濾室，上(shang)(shang)(shang)部(bu)為氣箱(xiang)脈沖室。在除塵器入(ru)口處裝有氣流(liu)分(fen)布板。
含塵(chen)(chen)氣(qi)(qi)(qi)體進入除塵(chen)(chen)器(qi)灰(hui)斗后(hou)，由于氣(qi)(qi)(qi)流(liu)斷(duan)面突(tu)然擴大及氣(qi)(qi)(qi)流(liu)分布(bu)板作(zuo)用，氣(qi)(qi)(qi)流(liu)中一部分粗大顆粒(li)在動(dong)和慣性力作(zuo)用下沉降在灰(hui)斗；粒(li)度細、密度小的(de)(de)塵(chen)(chen)粒(li)進入濾塵(chen)(chen)室后(hou)，通過布(bu)朗擴散和篩濾等組合效應，使粉塵(chen)(chen)沉積在濾料表(biao)面上，凈化后(hou)的(de)(de)氣(qi)(qi)(qi)體進入凈氣(qi)(qi)(qi)室由排(pai)氣(qi)(qi)(qi)管(guan)經風(feng)機(ji)排(pai)出。
濾(lv)(lv)筒(tong)式除塵器的(de)(de)(de)(de)(de)阻(zu)(zu)力隨(sui)濾(lv)(lv)料表(biao)面(mian)粉塵層厚度(du)的(de)(de)(de)(de)(de)增加而增大。阻(zu)(zu)力達到(dao)某(mou)一規定(ding)值時(shi)進(jin)行(xing)清(qing)灰(hui)。此時(shi)PLC程序控制脈(mo)沖閥(fa)(fa)(fa)的(de)(de)(de)(de)(de)啟閉，首先一分(fen)室提升閥(fa)(fa)(fa)關閉，將(jiang)過(guo)濾(lv)(lv)氣(qi)流截(jie)斷，然(ran)后電磁脈(mo)沖閥(fa)(fa)(fa)開(kai)(kai)啟，壓縮空(kong)氣(qi)以及短的(de)(de)(de)(de)(de)時(shi)間在(zai)上箱體內迅速膨脹(zhang)，涌入濾(lv)(lv)筒(tong)，使濾(lv)(lv)筒(tong)膨脹(zhang)變形產生振(zhen)動，并在(zai)逆(ni)向氣(qi)流沖刷的(de)(de)(de)(de)(de)作(zuo)用下，附著在(zai)濾(lv)(lv)袋外表(biao)面(mian)上的(de)(de)(de)(de)(de)粉塵被剝離(li)落入灰(hui)斗中(zhong)。清(qing)灰(hui)完畢后，電磁脈(mo)沖閥(fa)(fa)(fa)關閉，提升閥(fa)(fa)(fa)打開(kai)(kai)，該室又恢(hui)復(fu)過(guo)濾(lv)(lv)狀(zhuang)態。清(qing)灰(hui)各(ge)室依次進(jin)行(xing)，從一室清(qing)灰(hui)開(kai)(kai)始(shi)(shi)至下一次清(qing)灰(hui)開(kai)(kai)始(shi)(shi)為一個清(qing)灰(hui)周期。脫落的(de)(de)(de)(de)(de)粉塵掉入灰(hui)斗內通(tong)過(guo)缷(xie)灰(hui)閥(fa)(fa)(fa)排出(chu)。
在此過(guo)程中(zhong)必須定期對(dui)濾(lv)筒進行更換和清洗，以確保過(guo)濾(lv)效果和精度，因為在過(guo)濾(lv)過(guo)程中(zhong)粉(fen)塵除了被阻(zu)隔外還(huan)有(you)部分會沉積于(yu)濾(lv)料(liao)表面(mian)，增大阻(zu)力，所以一(yi)般的正確更換時間(jian)是三(san)至五個月(yue)！
