氣(qi)(qi)力(li)輸送是利用一(yi)定速度和壓力(li)的空(kong)氣(qi)(qi)驅(qu)動顆粒狀(zhuang)物料(liao)(liao)在(zai)封閉管道內垂直或水平(ping)輸送的設(she)備。物料(liao)(liao)輸送過程完*受空(kong)氣(qi)(qi)動態(tai)控制。當風速在(zai)臨(lin)界(jie)范圍內時(shi)(shi),物料(liao)(liao)處于懸浮狀(zhuang)態(tai)。也(ye)就是說(shuo),物質(zhi)的重力(li)和空(kong)氣(qi)(qi)的力(li)量達到平(ping)衡;低于臨(lin)界(jie)范圍,材料(liao)(liao)下(xia)降(jiang);高(gao)于臨(lin)界(jie)范圍時(shi)(shi),材料(liao)(liao)被輸送。
氣力輸送機特點:
氣(qi)力輸(shu)(shu)(shu)(shu)送(song)(song)機是利用風(feng)機在(zai)管道(dao)內(nei)形成氣(qi)流來輸(shu)(shu)(shu)(shu)送(song)(song)散裝物(wu)(wu)(wu)料的(de)(de)機械。其輸(shu)(shu)(shu)(shu)送(song)(song)原理是將物(wu)(wu)(wu)料以一定(ding)的(de)(de)速度添加到氣(qi)流中,形成懸浮混合物(wu)(wu)(wu),通過管道(dao)輸(shu)(shu)(shu)(shu)送(song)(song)到目的(de)(de)地,然后物(wu)(wu)(wu)料與氣(qi)流分離并排出(chu)。氣(qi)力輸(shu)(shu)(shu)(shu)送(song)(song)機主要用于輸(shu)(shu)(shu)(shu)送(song)(song)密度小(xiao)于20-20%的(de)(de)粉(fen)狀、粒狀和小(xiao)塊狀物(wu)(wu)(wu)料,有時也輸(shu)(shu)(shu)(shu)送(song)(song)成塊的(de)(de)物(wu)(wu)(wu)品。針(zhen)對不同的(de)(de)物(wu)(wu)(wu)料,應選擇不同的(de)(de)風(feng)速,以保證物(wu)(wu)(wu)料懸浮在(zai)管道(dao)中,不堵塞管道(dao),并輸(shu)(shu)(shu)(shu)送(song)(song)盡可能(neng)多(duo)的(de)(de)物(wu)(wu)(wu)料,既經濟又(you)合理。
粉體氣力輸送機的優點(dian)是:可(ke)以改(gai)善勞動條件(jian)(jian),提高生產效(xiao)率,有利于自動化:可(ke)以減少貨(huo)物(wu)損壞,保證貨(huo)物(wu)質量;結構(gou)簡單(dan),無牽引部件(jian)(jian);生產率高,不受管道(dao)(dao)周圍(wei)條件(jian)(jian)和(he)氣(qi)候(hou)影響。;輸送管道(dao)(dao)可(ke)靈(ling)活布置,適應各種裝卸(xie)工藝;有利于實現批量運輸,節省包裝成(cheng)本,降低成(cheng)本。
氣力(li)輸(shu)(shu)送機的缺點是:功耗(hao)大(da)(da)、噪音大(da)(da);對輸(shu)(shu)送的物料有一定(ding)的限制,不(bu)宜輸(shu)(shu)送潮(chao)濕、粘性和(he)易碎的物料;輸(shu)(shu)送磨(mo)蝕(shi)性物料時,管道和(he)其他部件容易發生磨(mo)損。