密相氣力輸送系列

氣力輸送(song)原理

氣(qi)(qi)(qi)力(li)(li)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)系(xi)統可(ke)分類為(wei)(wei)(wei)不同的(de)(de)(de)(de)流(liu)動(dong)型式(shi)(shi)，其中兩(liang)種(zhong)主要型式(shi)(shi)是(shi)(shi)(shi)：(a) 稀(xi)(xi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)和（b）密(mi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)每種(zhong)流(liu)動(dong)型式(shi)(shi)可(ke)按物(wu)(wu)料(liao)與空氣(qi)(qi)(qi)的(de)(de)(de)(de)流(liu)量(liang)比(bi)(bi)率大小分類，其比(bi)(bi)率也被(bei)(bei)稱(cheng)為(wei)(wei)(wei)“固氣(qi)(qi)(qi)比(bi)(bi)”： μ=ms/mf (1)許多稀(xi)(xi)相(xiang)(xiang)的(de)(de)(de)(de)運(yun)行范圍為(wei)(wei)(wei)0＜μ＜15，而(er)密(mi)相(xiang)(xiang)通常(chang)是(shi)(shi)(shi)μ＞15。圖1所(suo)示的(de)(de)(de)(de)是(shi)(shi)(shi)典型輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)狀(zhuang)態圖。稀(xi)(xi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)可(ke)以(yi)被(bei)(bei)認(ren)為(wei)(wei)(wei)是(shi)(shi)(shi)一(yi)種(zhong)完全的(de)(de)(de)(de)懸(xuan)(xuan)浮(fu)流(liu)，而(er)密(mi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)通常(chang)被(bei)(bei)認(ren)為(wei)(wei)(wei)是(shi)(shi)(shi)非懸(xuan)(xuan)浮(fu)流(liu)。然而(er)，如圖1所(suo)示，許多不同種(zhong)類的(de)(de)(de)(de)密(mi)相(xiang)(xiang)（非懸(xuan)(xuan)浮(fu)流(liu)）依靠(kao)散料(liao)的(de)(de)(de)(de)料(liao)性(xing)(xing)和流(liu)動(dong)性(xing)(xing)存在(zai)(zai)。密(mi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)同樣也能被(bei)(bei)定義為(wei)(wei)(wei)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)物(wu)(wu)料(liao)完全填滿(man)管(guan)道(dao)(dao)截(jie)(jie)面(mian)的(de)(de)(de)(de)一(yi)種(zhong)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)方(fang)式(shi)(shi)。稀(xi)(xi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)通常(chang)需要使(shi)用大量(liang)的(de)(de)(de)(de)高(gao)速(su)(su)氣(qi)(qi)(qi)體(ti)。氣(qi)(qi)(qi)流(liu)依靠(kao)升力(li)(li)和推動(dong)力(li)(li)以(yi)離散粒(li)子(zi)的(de)(de)(de)(de)形式(shi)(shi)攜(xie)帶著物(wu)(wu)料(liao)。參(can)考圖1中所(suo)述的(de)(de)(de)(de)“懸(xuan)(xuan)浮(fu)流(liu)”，稀(xi)(xi)相(xiang)(xiang)系(xi)統通常(chang)是(shi)(shi)(shi)最為(wei)(wei)(wei)被(bei)(bei)廣泛應(ying)用的(de)(de)(de)(de)氣(qi)(qi)(qi)力(li)(li)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)系(xi)統。由于稀(xi)(xi)相(xiang)(xiang)系(xi)統設計的(de)(de)(de)(de)相(xiang)(xiang)對簡單(dan)性(xing)(xing)，它們同時(shi)(shi)也被(bei)(bei)頻繁(fan)的(de)(de)(de)(de)應(ying)用在(zai)(zai)工(gong)業領域。輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)氣(qi)(qi)(qi)體(ti)的(de)(de)(de)(de)速(su)(su)度(du)(du)減(jian)少到比(bi)(bi)保持粒(li)子(zi)懸(xuan)(xuan)浮(fu)狀(zhuang)態的(de)(de)(de)(de)臨界值更小時(shi)(shi)，導致物(wu)(wu)料(liao)在(zai)(zai)輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)管(guan)道(dao)(dao)的(de)(de)(de)(de)橫(heng)截(jie)(jie)面(mian)形成(cheng)不均勻的(de)(de)(de)(de)分布。臨界氣(qi)(qi)(qi)體(ti)速(su)(su)度(du)(du)被(bei)(bei)稱(cheng)為(wei)(wei)(wei)是(shi)(shi)(shi)水(shui)平輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)的(de)(de)(de)(de)跳(tiao)躍速(su)(su)度(du)(du)，垂(chui)直輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)時(shi)(shi)堵(du)塞。當水(shui)平管(guan)道(dao)(dao)中的(de)(de)(de)(de)物(wu)(wu)料(liao)表面(mian)氣(qi)(qi)(qi)體(ti)速(su)(su)度(du)(du)低于突變速(su)(su)度(du)(du)時(shi)(shi)，輸(shu)(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)將會以(yi)低流(liu)量(liang)通過管(guan)道(dao)(dao)橫(heng)截(jie)(jie)面(mian)的(de)(de)(de)(de)上部(bu)，在(zai)(zai)管(guan)道(dao)(dao)的(de)(de)(de)(de)剩余(yu)部(bu)分以(yi)高(gao)濃度(du)(du)低速(su)(su)度(du)(du)的(de)(de)(de)(de)形式(shi)(shi)填充。有時(shi)(shi)沿管(guan)道(dao)(dao)的(de)(de)(de)(de)橫(heng)截(jie)(jie)面(mian)會被(bei)(bei)填滿(man)，而(er)有時(shi)(shi)只是(shi)(shi)(shi)部(bu)分被(bei)(bei)填滿(man).

實際應用中, 按照氣(qi)力(li)驅動(dong)形(xing)式可以分(fen)為負壓(ya)(ya)和(he)(he)正壓(ya)(ya)氣(qi)力(li)輸(shu)送(song)(song)(song)(song), 在這兩(liang)種輸(shu)送(song)(song)(song)(song)系(xi)統(tong)中, 根(gen)據流動(dong)狀態圖再區分(fen)分(fen)為稀相(xiang)(xiang), 密(mi)相(xiang)(xiang)和(he)(he)流化(hua)態輸(shu)送(song)(song)(song)(song)系(xi)統(tong). 除此(ci)之(zhi)外,根(gen)據喂料(liao)不同分(fen)為連續和(he)(he)批次輸(shu)送(song)(song)(song)(song). 在高壓(ya)(ya)密(mi)相(xiang)(xiang)輸(shu)送(song)(song)(song)(song)技術中常(chang)采用批次的壓(ya)(ya)力(li)罐進行高壓(ya)(ya)輸(shu)送(song)(song)(song)(song), 同時(shi), 可以組合兩(liang)個(ge)壓(ya)(ya)力(li)罐設計達到連續的輸(shu)送(song)(song)(song)(song).

密相氣力輸(shu)送特(te)點:

● 用氣量小(xiao), 節能

● 無殘留輸送

● 不堵(du)塞, 運行可靠

● 維護費(fei)用低

● 適合于各類粉(fen)粒(li)物料(liao)

● 壓力至0. 6m p a可調

● 適合于柔(rou)性化自動生產中(zhong)的(de)物料高效輸送