密相氣力輸送(song)系列

氣力輸送原理(li)

氣力(li)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)系統可分類為(wei)(wei)不(bu)(bu)同(tong)的(de)(de)(de)(de)(de)(de)(de)流動(dong)(dong)型(xing)(xing)式，其中(zhong)兩種(zhong)主要型(xing)(xing)式是(shi)(shi)(shi)：(a) 稀(xi)相(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)和（b）密(mi)相(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)每種(zhong)流動(dong)(dong)型(xing)(xing)式可按物(wu)(wu)(wu)料(liao)(liao)與空氣的(de)(de)(de)(de)(de)(de)(de)流量(liang)比率(lv)大小(xiao)分類，其比率(lv)也被(bei)(bei)稱(cheng)為(wei)(wei)“固氣比”： μ=ms/mf (1)許多稀(xi)相(xiang)(xiang)(xiang)(xiang)的(de)(de)(de)(de)(de)(de)(de)運行范(fan)圍為(wei)(wei)0＜μ＜15，而(er)密(mi)相(xiang)(xiang)(xiang)(xiang)通常(chang)是(shi)(shi)(shi)μ＞15。圖1所示的(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)典型(xing)(xing)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)狀(zhuang)態(tai)(tai)圖。稀(xi)相(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)可以(yi)被(bei)(bei)認為(wei)(wei)是(shi)(shi)(shi)一種(zhong)完全的(de)(de)(de)(de)(de)(de)(de)懸浮(fu)流，而(er)密(mi)相(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)被(bei)(bei)認為(wei)(wei)是(shi)(shi)(shi)非懸浮(fu)流。然(ran)而(er)，如圖1所示，許多不(bu)(bu)同(tong)種(zhong)類的(de)(de)(de)(de)(de)(de)(de)密(mi)相(xiang)(xiang)(xiang)(xiang)（非懸浮(fu)流）依靠散料(liao)(liao)的(de)(de)(de)(de)(de)(de)(de)料(liao)(liao)性和流動(dong)(dong)性存在。密(mi)相(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)同(tong)樣也能被(bei)(bei)定義(yi)為(wei)(wei)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)物(wu)(wu)(wu)料(liao)(liao)完全填滿(man)管道(dao)(dao)截(jie)面(mian)的(de)(de)(de)(de)(de)(de)(de)一種(zhong)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)方式。稀(xi)相(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)需要使用(yong)大量(liang)的(de)(de)(de)(de)(de)(de)(de)高(gao)速(su)(su)氣體(ti)。氣流依靠升力(li)和推動(dong)(dong)力(li)以(yi)離散粒(li)子的(de)(de)(de)(de)(de)(de)(de)形(xing)式攜帶(dai)著(zhu)物(wu)(wu)(wu)料(liao)(liao)。參考(kao)圖1中(zhong)所述的(de)(de)(de)(de)(de)(de)(de)“懸浮(fu)流”，稀(xi)相(xiang)(xiang)(xiang)(xiang)系統通常(chang)是(shi)(shi)(shi)最為(wei)(wei)被(bei)(bei)廣泛應用(yong)的(de)(de)(de)(de)(de)(de)(de)氣力(li)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)系統。由(you)于(yu)稀(xi)相(xiang)(xiang)(xiang)(xiang)系統設計(ji)的(de)(de)(de)(de)(de)(de)(de)相(xiang)(xiang)(xiang)(xiang)對簡單(dan)性，它們(men)同(tong)時(shi)也被(bei)(bei)頻繁的(de)(de)(de)(de)(de)(de)(de)應用(yong)在工業領域(yu)。輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)氣體(ti)的(de)(de)(de)(de)(de)(de)(de)速(su)(su)度減少到比保持粒(li)子懸浮(fu)狀(zhuang)態(tai)(tai)的(de)(de)(de)(de)(de)(de)(de)臨界值更小(xiao)時(shi)，導致(zhi)物(wu)(wu)(wu)料(liao)(liao)在輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)管道(dao)(dao)的(de)(de)(de)(de)(de)(de)(de)橫截(jie)面(mian)形(xing)成不(bu)(bu)均勻的(de)(de)(de)(de)(de)(de)(de)分布。臨界氣體(ti)速(su)(su)度被(bei)(bei)稱(cheng)為(wei)(wei)是(shi)(shi)(shi)水(shui)平輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)的(de)(de)(de)(de)(de)(de)(de)跳躍速(su)(su)度，垂直輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)時(shi)堵塞。當水(shui)平管道(dao)(dao)中(zhong)的(de)(de)(de)(de)(de)(de)(de)物(wu)(wu)(wu)料(liao)(liao)表面(mian)氣體(ti)速(su)(su)度低(di)于(yu)突變速(su)(su)度時(shi)，輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)將會以(yi)低(di)流量(liang)通過管道(dao)(dao)橫截(jie)面(mian)的(de)(de)(de)(de)(de)(de)(de)上部(bu)，在管道(dao)(dao)的(de)(de)(de)(de)(de)(de)(de)剩余部(bu)分以(yi)高(gao)濃度低(di)速(su)(su)度的(de)(de)(de)(de)(de)(de)(de)形(xing)式填充。有時(shi)沿管道(dao)(dao)的(de)(de)(de)(de)(de)(de)(de)橫截(jie)面(mian)會被(bei)(bei)填滿(man)，而(er)有時(shi)只是(shi)(shi)(shi)部(bu)分被(bei)(bei)填滿(man).

實際應(ying)用中(zhong), 按照(zhao)氣(qi)力(li)驅(qu)動形(xing)式可以分為負壓和(he)正壓氣(qi)力(li)輸(shu)送(song)(song), 在這(zhe)兩(liang)種輸(shu)送(song)(song)系(xi)統中(zhong), 根據(ju)流動狀態圖再區分分為稀相(xiang)(xiang), 密相(xiang)(xiang)和(he)流化態輸(shu)送(song)(song)系(xi)統. 除此之外(wai),根據(ju)喂料(liao)不(bu)同(tong)分為連(lian)續和(he)批(pi)次(ci)輸(shu)送(song)(song). 在高壓密相(xiang)(xiang)輸(shu)送(song)(song)技術中(zhong)常采用批(pi)次(ci)的(de)壓力(li)罐進行高壓輸(shu)送(song)(song), 同(tong)時, 可以組合(he)兩(liang)個壓力(li)罐設計達到連(lian)續的(de)輸(shu)送(song)(song).

密(mi)相氣力輸送特點:

● 用(yong)氣(qi)量小, 節能

● 無殘留(liu)輸送

● 不堵塞, 運(yun)行可(ke)靠

● 維護費用低

● 適合于各類粉粒物料

● 壓力至0. 6m p a可調

● 適合(he)于(yu)柔性化自動(dong)生產中的物(wu)料高效輸(shu)送(song)