粉體氣力輸送機輸送有多少種類？有何優缺點？
物料(liao)(liao)在(zai)輸(shu)送(song)(song)(song)(song)管(guan)(guan)道中(zhong)的(de)(de)(de)流(liu)(liu)(liu)(liu)動(dong)(dong)狀態其實很復雜，主要是(shi)(shi)隨著空(kong)氣(qi)(qi)流(liu)(liu)(liu)(liu)速、空(kong)氣(qi)(qi)中(zhong)的(de)(de)(de)物料(liao)(liao)量以及(ji)物料(liao)(liao)本(ben)身的(de)(de)(de)特性(xing)而(er)變(bian)化。一(yi)般根據(ju)(ju)(ju)管(guan)(guan)道內的(de)(de)(de)壓(ya)(ya)(ya)力(li)(li)是(shi)(shi)正壓(ya)(ya)(ya)還(huan)是(shi)(shi)負(fu)壓(ya)(ya)(ya)，分為(wei)(wei)(wei)(wei)吸入式(shi)(shi)和壓(ya)(ya)(ya)力(li)(li)式(shi)(shi)。另外，根據(ju)(ju)(ju)氣(qi)(qi)流(liu)(liu)(liu)(liu)速度和物料(liao)(liao)的(de)(de)(de)多少，物料(liao)(liao)在(zai)輸(shu)送(song)(song)(song)(song)管(guan)(guan)道中(zhong)的(de)(de)(de)流(liu)(liu)(liu)(liu)動(dong)(dong)狀態也可(ke)(ke)以分為(wei)(wei)(wei)(wei)兩(liang)類:一(yi)類是(shi)(shi)懸浮(fu)流(liu)(liu)(liu)(liu)，物料(liao)(liao)顆(ke)(ke)粒(li)被高(gao)(gao)速氣(qi)(qi)流(liu)(liu)(liu)(liu)的(de)(de)(de)動(dong)(dong)壓(ya)(ya)(ya)推動(dong)(dong)；另一(yi)種(zhong)是(shi)(shi)活塞流(liu)(liu)(liu)(liu)，物料(liao)(liao)顆(ke)(ke)粒(li)被氣(qi)(qi)流(liu)(liu)(liu)(liu)的(de)(de)(de)動(dong)(dong)壓(ya)(ya)(ya)或靜壓(ya)(ya)(ya)推動(dong)(dong)。按輸(shu)送(song)(song)(song)(song)管(guan)(guan)道中(zhong)氣(qi)(qi)流(liu)(liu)(liu)(liu)形成的(de)(de)(de)方式(shi)(shi):按輸(shu)送(song)(song)(song)(song)壓(ya)(ya)(ya)力(li)(li)可(ke)(ke)分為(wei)(wei)(wei)(wei)高(gao)(gao)壓(ya)(ya)(ya)型和低壓(ya)(ya)(ya)型；根據(ju)(ju)(ju)輸(shu)送(song)(song)(song)(song)裝置的(de)(de)(de)不(bu)同(tong)，可(ke)(ke)分為(wei)(wei)(wei)(wei)機械式(shi)(shi)和倉壓(ya)(ya)(ya)式(shi)(shi)；按輸(shu)送(song)(song)(song)(song)管(guan)(guan)道的(de)(de)(de)配(pei)置形式(shi)(shi)可(ke)(ke)分為(wei)(wei)(wei)(wei)單(dan)管(guan)(guan)輸(shu)送(song)(song)(song)(song)和雙管(guan)(guan)輸(shu)送(song)(song)(song)(song)，雙管(guan)(guan)輸(shu)送(song)(song)(song)(song)又可(ke)(ke)分為(wei)(wei)(wei)(wei)內旁通通道式(shi)(shi)和外旁通管(guan)(guan)式(shi)(shi)。根據(ju)(ju)(ju)供(gong)(gong)氣(qi)(qi)方式(shi)(shi)的(de)(de)(de)不(bu)同(tong)，可(ke)(ke)分為(wei)(wei)(wei)(wei)連續供(gong)(gong)氣(qi)(qi)和脈沖(chong)供(gong)(gong)氣(qi)(qi)。
根據輸(shu)(shu)送(song)過程，氣力輸(shu)(shu)送(song)可(ke)分為三種:抽(chou)吸(xi)輸(shu)(shu)送(song)、壓(ya)縮空氣輸(shu)(shu)送(song)和混合輸(shu)(shu)送(song)，每(mei)種輸(shu)(shu)送(song)方式都有各自的優缺點(dian)。
1.吸力氣力輸送(song)系統
吸(xi)力(li)式(shi)氣(qi)力(li)輸送也叫真(zhen)空(kong)輸送。系統(tong)管(guan)道(dao)一般一端連接真(zhen)空(kong)泵，另一端通過吸(xi)嘴伸入物料(liao)倉(cang)。真(zhen)空(kong)泵啟動(dong)時，系統(tong)管(guan)道(dao)內(nei)的(de)空(kong)氣(qi)被吸(xi)走，兩端形成壓力(li)差。粉末(mo)由于壓力(li)差被吸(xi)入，*后(hou)隨著氣(qi)流被送到指定的(de)料(liao)倉(cang)，從(cong)而達到氣(qi)流輸送的(de)目(mu)的(de)。
氣力輸送機供(gong)料(liao)比較方便，幾個加料(liao)倉(cang)可(ke)以通過軟管和(he)吸嘴連接，同(tong)時(shi)加料(liao)，加料(liao)方便。但隨著管道(dao)沿線(xian)壓(ya)力損失的(de)(de)增加，輸送(song)物料(liao)的(de)(de)距離和(he)生產(chan)率(lv)受到限(xian)制，能(neng)耗高，對(dui)管道(dao)密封性要求(qiu)高。同(tong)時(shi)，由(you)于(yu)管道(dao)內(nei)的(de)(de)負壓(ya)，可(ke)以減(jian)少物料(liao)在輸送(song)過程中的(de)(de)泄漏(lou)，大大減(jian)少對(dui)周圍環境(jing)的(de)(de)污(wu)染。一般可(ke)用于(yu)輸送(song)一些污(wu)染環境(jing)的(de)(de)物料(liao)，如煤粉、化肥等。
2.壓力給料氣(qi)力輸(shu)送系統
壓(ya)(ya)力氣(qi)(qi)(qi)力輸(shu)送(song)(song)也叫壓(ya)(ya)力輸(shu)送(song)(song)。一般系統的進氣(qi)(qi)(qi)管(guan)(guan)與鼓風機相(xiang)連，鼓風機通(tong)過進氣(qi)(qi)(qi)口吸(xi)入(ru)空氣(qi)(qi)(qi)，壓(ya)(ya)縮空氣(qi)(qi)(qi)形成(cheng)高(gao)壓(ya)(ya)氣(qi)(qi)(qi)流。高(gao)壓(ya)(ya)空氣(qi)(qi)(qi)沿著輸(shu)送(song)(song)管(guan)(guan)道(dao)(dao)流動，將(jiang)物料沿著管(guan)(guan)道(dao)(dao)驅(qu)動到指定位置，*后凈化(hua)后的空氣(qi)(qi)(qi)通(tong)過凈化(hua)裝置排(pai)出(chu)。
該(gai)系統可(ke)將物料(liao)輸送(song)到多個地(di)方，且距離遠(yuan)，生產效率高，對管(guan)道(dao)密(mi)封要求相(xiang)對較低，是一種常見的粉體(ti)輸送(song)方案(an)。
3.混(hun)合氣力輸送系(xi)統
混合輸送(song)也叫真空(kong)壓力輸送(song)。它綜(zong)合了上述兩種(zhong)運(yun)輸方式的(de)優(you)點(dian)，可(ke)以(yi)在多(duo)處取卸(xie)物料，輸送(song)距離(li)長，但(dan)整個系統結構(gou)復雜，能耗(hao)高。
粉體氣力輸送機系(xi)統的(de)進(jin)氣(qi)(qi)口(kou)與物料(liao)分(fen)離(li)器(qi)相連，可以從多處將物料(liao)吸入(ru)(ru)(ru)分(fen)離(li)器(qi)。物料(liao)隨(sui)氣(qi)(qi)流送入(ru)(ru)(ru)分(fen)離(li)器(qi)后，物料(liao)與空氣(qi)(qi)分(fen)離(li)。分(fen)離(li)出來(lai)的(de)空氣(qi)(qi)通(tong)過(guo)風(feng)管進(jin)入(ru)(ru)(ru)過(guo)濾器(qi)，凈化后的(de)空氣(qi)(qi)進(jin)入(ru)(ru)(ru)鼓風(feng)機，*終被壓(ya)入(ru)(ru)(ru)物料(liao)輸送管道，形成高壓(ya)氣(qi)(qi)流。分(fen)離(li)器(qi)中的(de)物料(liao)在旋轉給料(liao)機的(de)作用(yong)下均勻連續地(di)進(jin)入(ru)(ru)(ru)物料(liao)輸送管道。隨(sui)著高壓(ya)氣(qi)(qi)流進(jin)入(ru)(ru)(ru)儲料(liao)倉(cang)，空氣(qi)(qi)*終通(tong)過(guo)過(guo)濾器(qi)排出。
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