粉體氣力輸送機是利(li)用一定速度和壓力(li)(li)的空(kong)氣驅動顆粒狀物料在(zai)(zai)封閉管道內垂直(zhi)或水(shui)平輸送的設備(bei)。輸送過程完*由空(kong)氣的動態控制。當(dang)風速在(zai)(zai)臨(lin)界(jie)范圍內時,物料處于懸浮狀態。也(ye)就是說,物質的重力(li)(li)和空(kong)氣的力(li)(li)量達(da)到平衡(heng);低于臨(lin)界(jie)范圍,材料下(xia)降(jiang);高于臨(lin)界(jie)范圍時,材料被輸送。
氣力(li)輸送(song)機(ji)的特點
氣力輸送機是利(li)用(yong)風(feng)機在(zai)管(guan)道(dao)內形成氣流(liu)來輸送(song)(song)散(san)裝物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)(liao)的(de)(de)機械。其輸送(song)(song)原理(li)是將物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)(liao)以一定的(de)(de)速度(du)添加到(dao)氣流(liu)中(zhong),形成懸浮混合物(wu)(wu)(wu)(wu)(wu)(wu),通過管(guan)道(dao)輸送(song)(song)到(dao)目的(de)(de)地(di),然后物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)(liao)與(yu)氣流(liu)分離(li)并排出(chu)。 氣力輸送(song)(song)機主要用(yong)于輸送(song)(song)密度(du)小于20-30朗(lang)姆的(de)(de)粉狀、粒(li)狀和小塊狀物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)(liao)。有時它們也用(yong)于運輸單個物(wu)(wu)(wu)(wu)(wu)(wu)品。針對不同的(de)(de)物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)(liao),應(ying)選擇不同的(de)(de)風(feng)速,以保證物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)(liao)懸浮在(zai)管(guan)道(dao)中(zhong),不堵(du)塞管(guan)道(dao),并輸送(song)(song)盡(jin)可能多的(de)(de)物(wu)(wu)(wu)(wu)(wu)(wu)料(liao)(liao),既經濟又合理(li)。
氣(qi)力(li)輸送(song)機的優點(dian)是(shi):可(ke)(ke)以改善勞動條件(jian),提高生(sheng)產(chan)效率(lv),有利于自(zi)動化:可(ke)(ke)以減少貨(huo)物損壞,保(bao)證貨(huo)物質(zhi)量(liang);結構(gou)簡單,無牽引部件(jian);生(sheng)產(chan)率(lv)高,不受管(guan)(guan)道周圍條件(jian)和氣(qi)候影響(xiang)。;輸送(song)管(guan)(guan)道可(ke)(ke)靈活(huo)布置(zhi),適應各種裝卸工藝;有利于實現批量(liang)運輸,節省包裝成(cheng)本,降(jiang)低成(cheng)本。
氣力(li)輸(shu)(shu)(shu)送(song)(song)機的(de)缺點是:功耗大、噪音大;對輸(shu)(shu)(shu)送(song)(song)的(de)物料(liao)有(you)一定(ding)的(de)限制(zhi),不宜輸(shu)(shu)(shu)送(song)(song)潮(chao)濕、粘性和易(yi)碎(sui)的(de)物料(liao);輸(shu)(shu)(shu)送(song)(song)磨蝕(shi)性物料(liao)時,管(guan)道和其他(ta)部件容易(yi)發(fa)生磨損(sun)。