密相(xiang)氣(qi)力(li)輸送系列

氣力輸送原理

氣(qi)(qi)(qi)力(li)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)系(xi)統(tong)(tong)可(ke)分類為(wei)(wei)(wei)不(bu)同(tong)的(de)(de)(de)流(liu)(liu)動(dong)型(xing)式(shi)(shi)，其(qi)中兩(liang)種(zhong)主要型(xing)式(shi)(shi)是(shi)(shi)：(a) 稀(xi)相(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)和（b）密(mi)相(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)每(mei)種(zhong)流(liu)(liu)動(dong)型(xing)式(shi)(shi)可(ke)按物(wu)(wu)(wu)料(liao)與空(kong)氣(qi)(qi)(qi)的(de)(de)(de)流(liu)(liu)量(liang)(liang)比率大(da)小分類，其(qi)比率也被稱(cheng)為(wei)(wei)(wei)“固氣(qi)(qi)(qi)比”： μ=ms/mf (1)許多稀(xi)相(xiang)的(de)(de)(de)運行范(fan)圍為(wei)(wei)(wei)0＜μ＜15，而密(mi)相(xiang)通常(chang)(chang)是(shi)(shi)μ＞15。圖(tu)1所(suo)示(shi)的(de)(de)(de)是(shi)(shi)典型(xing)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)狀態圖(tu)。稀(xi)相(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)可(ke)以被認為(wei)(wei)(wei)是(shi)(shi)一(yi)種(zhong)完全(quan)的(de)(de)(de)懸浮流(liu)(liu)，而密(mi)相(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)通常(chang)(chang)被認為(wei)(wei)(wei)是(shi)(shi)非懸浮流(liu)(liu)。然而，如圖(tu)1所(suo)示(shi)，許多不(bu)同(tong)種(zhong)類的(de)(de)(de)密(mi)相(xiang)（非懸浮流(liu)(liu)）依靠(kao)(kao)散(san)料(liao)的(de)(de)(de)料(liao)性和流(liu)(liu)動(dong)性存在。密(mi)相(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)同(tong)樣也能被定義(yi)為(wei)(wei)(wei)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)物(wu)(wu)(wu)料(liao)完全(quan)填滿管(guan)(guan)道截(jie)面(mian)(mian)(mian)的(de)(de)(de)一(yi)種(zhong)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)方式(shi)(shi)。稀(xi)相(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)通常(chang)(chang)需要使用大(da)量(liang)(liang)的(de)(de)(de)高(gao)速(su)氣(qi)(qi)(qi)體(ti)(ti)。氣(qi)(qi)(qi)流(liu)(liu)依靠(kao)(kao)升力(li)和推動(dong)力(li)以離散(san)粒(li)子的(de)(de)(de)形式(shi)(shi)攜帶著物(wu)(wu)(wu)料(liao)。參考(kao)圖(tu)1中所(suo)述的(de)(de)(de)“懸浮流(liu)(liu)”，稀(xi)相(xiang)系(xi)統(tong)(tong)通常(chang)(chang)是(shi)(shi)最為(wei)(wei)(wei)被廣(guang)泛應用的(de)(de)(de)氣(qi)(qi)(qi)力(li)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)系(xi)統(tong)(tong)。由于稀(xi)相(xiang)系(xi)統(tong)(tong)設計(ji)的(de)(de)(de)相(xiang)對(dui)簡單(dan)性，它們同(tong)時(shi)也被頻繁的(de)(de)(de)應用在工業領域。輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)氣(qi)(qi)(qi)體(ti)(ti)的(de)(de)(de)速(su)度減少(shao)到比保持(chi)粒(li)子懸浮狀態的(de)(de)(de)臨界值更小時(shi)，導致物(wu)(wu)(wu)料(liao)在輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)管(guan)(guan)道的(de)(de)(de)橫(heng)截(jie)面(mian)(mian)(mian)形成不(bu)均勻的(de)(de)(de)分布。臨界氣(qi)(qi)(qi)體(ti)(ti)速(su)度被稱(cheng)為(wei)(wei)(wei)是(shi)(shi)水平(ping)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)的(de)(de)(de)跳躍速(su)度，垂直輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)時(shi)堵(du)塞。當水平(ping)管(guan)(guan)道中的(de)(de)(de)物(wu)(wu)(wu)料(liao)表面(mian)(mian)(mian)氣(qi)(qi)(qi)體(ti)(ti)速(su)度低于突變(bian)速(su)度時(shi)，輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)(song)將會以低流(liu)(liu)量(liang)(liang)通過管(guan)(guan)道橫(heng)截(jie)面(mian)(mian)(mian)的(de)(de)(de)上部(bu)，在管(guan)(guan)道的(de)(de)(de)剩(sheng)余部(bu)分以高(gao)濃度低速(su)度的(de)(de)(de)形式(shi)(shi)填充(chong)。有時(shi)沿管(guan)(guan)道的(de)(de)(de)橫(heng)截(jie)面(mian)(mian)(mian)會被填滿，而有時(shi)只(zhi)是(shi)(shi)部(bu)分被填滿.

實際應用中, 按(an)照(zhao)氣力(li)驅動形式可以(yi)(yi)分(fen)為(wei)(wei)負壓(ya)和(he)正壓(ya)氣力(li)輸(shu)送(song)(song), 在這兩(liang)種輸(shu)送(song)(song)系(xi)統中, 根(gen)據流動狀態圖再區分(fen)分(fen)為(wei)(wei)稀相(xiang), 密相(xiang)和(he)流化態輸(shu)送(song)(song)系(xi)統. 除此之外,根(gen)據喂(wei)料不(bu)同分(fen)為(wei)(wei)連(lian)續和(he)批(pi)次(ci)(ci)輸(shu)送(song)(song). 在高壓(ya)密相(xiang)輸(shu)送(song)(song)技(ji)術中常采用批(pi)次(ci)(ci)的壓(ya)力(li)罐(guan)進行高壓(ya)輸(shu)送(song)(song), 同時(shi), 可以(yi)(yi)組合(he)兩(liang)個壓(ya)力(li)罐(guan)設(she)計(ji)達到(dao)連(lian)續的輸(shu)送(song)(song).

密相氣力輸送(song)特點:

● 用(yong)氣(qi)量小(xiao), 節能

● 無殘(can)留(liu)輸送

● 不堵塞, 運行可靠(kao)

● 維護(hu)費(fei)用低

● 適(shi)合于各類粉(fen)粒物料

● 壓(ya)力至0. 6m p a可調

● 適合于柔性化自(zi)動生產中的(de)物料(liao)高效輸送