密相氣力輸送(song)系列

氣(qi)力輸(shu)送原理

氣(qi)(qi)力輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)系(xi)(xi)(xi)(xi)統(tong)可分類為(wei)(wei)(wei)不同的(de)(de)(de)流動型式(shi)，其中(zhong)兩種主要型式(shi)是(shi)(shi)：(a) 稀相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)和(he)（b）密(mi)相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)每種流動型式(shi)可按物(wu)料(liao)與空(kong)氣(qi)(qi)的(de)(de)(de)流量(liang)比率大小分類，其比率也(ye)被(bei)稱為(wei)(wei)(wei)“固氣(qi)(qi)比”： μ=ms/mf (1)許(xu)(xu)多(duo)稀相(xiang)(xiang)(xiang)(xiang)(xiang)的(de)(de)(de)運行范圍為(wei)(wei)(wei)0＜μ＜15，而(er)(er)密(mi)相(xiang)(xiang)(xiang)(xiang)(xiang)通常(chang)(chang)(chang)是(shi)(shi)μ＞15。圖(tu)(tu)1所示(shi)的(de)(de)(de)是(shi)(shi)典型輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)狀態圖(tu)(tu)。稀相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)可以(yi)被(bei)認為(wei)(wei)(wei)是(shi)(shi)一種完全的(de)(de)(de)懸(xuan)(xuan)(xuan)浮(fu)流，而(er)(er)密(mi)相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)(chang)(chang)被(bei)認為(wei)(wei)(wei)是(shi)(shi)非(fei)(fei)懸(xuan)(xuan)(xuan)浮(fu)流。然(ran)而(er)(er)，如圖(tu)(tu)1所示(shi)，許(xu)(xu)多(duo)不同種類的(de)(de)(de)密(mi)相(xiang)(xiang)(xiang)(xiang)(xiang)（非(fei)(fei)懸(xuan)(xuan)(xuan)浮(fu)流）依靠(kao)散料(liao)的(de)(de)(de)料(liao)性和(he)流動性存(cun)在。密(mi)相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)同樣也(ye)能被(bei)定(ding)義為(wei)(wei)(wei)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)物(wu)料(liao)完全填(tian)滿(man)管(guan)道(dao)截(jie)(jie)面的(de)(de)(de)一種輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)方式(shi)。稀相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)(chang)(chang)需要使用(yong)大量(liang)的(de)(de)(de)高速(su)(su)(su)氣(qi)(qi)體(ti)。氣(qi)(qi)流依靠(kao)升力和(he)推(tui)動力以(yi)離(li)散粒子的(de)(de)(de)形式(shi)攜帶(dai)著物(wu)料(liao)。參考圖(tu)(tu)1中(zhong)所述的(de)(de)(de)“懸(xuan)(xuan)(xuan)浮(fu)流”，稀相(xiang)(xiang)(xiang)(xiang)(xiang)系(xi)(xi)(xi)(xi)統(tong)通常(chang)(chang)(chang)是(shi)(shi)最為(wei)(wei)(wei)被(bei)廣泛應用(yong)的(de)(de)(de)氣(qi)(qi)力輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)系(xi)(xi)(xi)(xi)統(tong)。由(you)于稀相(xiang)(xiang)(xiang)(xiang)(xiang)系(xi)(xi)(xi)(xi)統(tong)設計的(de)(de)(de)相(xiang)(xiang)(xiang)(xiang)(xiang)對簡(jian)單性，它(ta)們同時(shi)也(ye)被(bei)頻(pin)繁的(de)(de)(de)應用(yong)在工業領域(yu)。輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)氣(qi)(qi)體(ti)的(de)(de)(de)速(su)(su)(su)度(du)減(jian)少(shao)到比保持粒子懸(xuan)(xuan)(xuan)浮(fu)狀態的(de)(de)(de)臨界(jie)值更小時(shi)，導致物(wu)料(liao)在輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)管(guan)道(dao)的(de)(de)(de)橫(heng)(heng)截(jie)(jie)面形成不均勻的(de)(de)(de)分布。臨界(jie)氣(qi)(qi)體(ti)速(su)(su)(su)度(du)被(bei)稱為(wei)(wei)(wei)是(shi)(shi)水平輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)的(de)(de)(de)跳躍速(su)(su)(su)度(du)，垂直輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)時(shi)堵(du)塞。當水平管(guan)道(dao)中(zhong)的(de)(de)(de)物(wu)料(liao)表面氣(qi)(qi)體(ti)速(su)(su)(su)度(du)低(di)(di)于突變速(su)(su)(su)度(du)時(shi)，輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)將會(hui)以(yi)低(di)(di)流量(liang)通過管(guan)道(dao)橫(heng)(heng)截(jie)(jie)面的(de)(de)(de)上(shang)部，在管(guan)道(dao)的(de)(de)(de)剩余部分以(yi)高濃度(du)低(di)(di)速(su)(su)(su)度(du)的(de)(de)(de)形式(shi)填(tian)充(chong)。有時(shi)沿管(guan)道(dao)的(de)(de)(de)橫(heng)(heng)截(jie)(jie)面會(hui)被(bei)填(tian)滿(man)，而(er)(er)有時(shi)只是(shi)(shi)部分被(bei)填(tian)滿(man).

實際應用中, 按照氣(qi)力(li)(li)驅動(dong)形式可(ke)以分(fen)為(wei)負壓(ya)和(he)正壓(ya)氣(qi)力(li)(li)輸(shu)送(song)(song), 在(zai)這兩種輸(shu)送(song)(song)系(xi)統中, 根據流動(dong)狀態圖再區分(fen)分(fen)為(wei)稀相, 密相和(he)流化態輸(shu)送(song)(song)系(xi)統. 除此(ci)之外,根據喂料不同分(fen)為(wei)連(lian)續(xu)和(he)批次(ci)輸(shu)送(song)(song). 在(zai)高(gao)壓(ya)密相輸(shu)送(song)(song)技術中常采用批次(ci)的壓(ya)力(li)(li)罐(guan)進行高(gao)壓(ya)輸(shu)送(song)(song), 同時, 可(ke)以組合兩個壓(ya)力(li)(li)罐(guan)設(she)計達到連(lian)續(xu)的輸(shu)送(song)(song).

密相氣力輸送特點:

● 用氣量(liang)小(xiao), 節能

● 無殘留輸送

● 不(bu)堵(du)塞, 運行可(ke)靠

● 維護費用低

● 適合于各類粉粒物(wu)料

● 壓力(li)至(zhi)0. 6m p a可調(diao)

● 適合于柔性化自動(dong)生產中(zhong)的物料高效輸(shu)送