密相氣力輸送(song)系列

氣力輸送原理

氣(qi)(qi)(qi)(qi)力(li)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)系(xi)統可(ke)分(fen)類為(wei)(wei)(wei)不(bu)同(tong)的(de)(de)(de)(de)(de)(de)流(liu)(liu)(liu)動(dong)型式(shi)，其(qi)中(zhong)兩(liang)種主要型式(shi)是(shi)(shi)：(a) 稀(xi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)和（b）密(mi)(mi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)每種流(liu)(liu)(liu)動(dong)型式(shi)可(ke)按(an)物料(liao)與空氣(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)流(liu)(liu)(liu)量(liang)(liang)比(bi)(bi)率(lv)大(da)小分(fen)類，其(qi)比(bi)(bi)率(lv)也被(bei)(bei)(bei)稱為(wei)(wei)(wei)“固氣(qi)(qi)(qi)(qi)比(bi)(bi)”： μ=ms/mf (1)許多稀(xi)相(xiang)(xiang)的(de)(de)(de)(de)(de)(de)運(yun)行范圍為(wei)(wei)(wei)0＜μ＜15，而(er)密(mi)(mi)相(xiang)(xiang)通常(chang)是(shi)(shi)μ＞15。圖(tu)1所示的(de)(de)(de)(de)(de)(de)是(shi)(shi)典型輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)狀態(tai)(tai)圖(tu)。稀(xi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)可(ke)以被(bei)(bei)(bei)認(ren)為(wei)(wei)(wei)是(shi)(shi)一種完全的(de)(de)(de)(de)(de)(de)懸浮(fu)流(liu)(liu)(liu)，而(er)密(mi)(mi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)被(bei)(bei)(bei)認(ren)為(wei)(wei)(wei)是(shi)(shi)非(fei)懸浮(fu)流(liu)(liu)(liu)。然而(er)，如圖(tu)1所示，許多不(bu)同(tong)種類的(de)(de)(de)(de)(de)(de)密(mi)(mi)相(xiang)(xiang)（非(fei)懸浮(fu)流(liu)(liu)(liu)）依靠散(san)料(liao)的(de)(de)(de)(de)(de)(de)料(liao)性(xing)和流(liu)(liu)(liu)動(dong)性(xing)存在。密(mi)(mi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)同(tong)樣也能被(bei)(bei)(bei)定義為(wei)(wei)(wei)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)物料(liao)完全填(tian)滿(man)管(guan)道(dao)截(jie)(jie)面的(de)(de)(de)(de)(de)(de)一種輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)方(fang)式(shi)。稀(xi)相(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)需要使用大(da)量(liang)(liang)的(de)(de)(de)(de)(de)(de)高速氣(qi)(qi)(qi)(qi)體(ti)。氣(qi)(qi)(qi)(qi)流(liu)(liu)(liu)依靠升(sheng)力(li)和推(tui)動(dong)力(li)以離散(san)粒子的(de)(de)(de)(de)(de)(de)形式(shi)攜帶著(zhu)物料(liao)。參考圖(tu)1中(zhong)所述(shu)的(de)(de)(de)(de)(de)(de)“懸浮(fu)流(liu)(liu)(liu)”，稀(xi)相(xiang)(xiang)系(xi)統通常(chang)是(shi)(shi)最為(wei)(wei)(wei)被(bei)(bei)(bei)廣泛應用的(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)力(li)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)系(xi)統。由于稀(xi)相(xiang)(xiang)系(xi)統設計的(de)(de)(de)(de)(de)(de)相(xiang)(xiang)對簡(jian)單性(xing)，它(ta)們同(tong)時(shi)(shi)也被(bei)(bei)(bei)頻繁的(de)(de)(de)(de)(de)(de)應用在工業領域。輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)氣(qi)(qi)(qi)(qi)體(ti)的(de)(de)(de)(de)(de)(de)速度(du)(du)減(jian)少到比(bi)(bi)保持粒子懸浮(fu)狀態(tai)(tai)的(de)(de)(de)(de)(de)(de)臨界值更小時(shi)(shi)，導致物料(liao)在輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)管(guan)道(dao)的(de)(de)(de)(de)(de)(de)橫(heng)截(jie)(jie)面形成不(bu)均勻的(de)(de)(de)(de)(de)(de)分(fen)布(bu)。臨界氣(qi)(qi)(qi)(qi)體(ti)速度(du)(du)被(bei)(bei)(bei)稱為(wei)(wei)(wei)是(shi)(shi)水(shui)平(ping)輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)的(de)(de)(de)(de)(de)(de)跳(tiao)躍速度(du)(du)，垂直輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)時(shi)(shi)堵塞。當水(shui)平(ping)管(guan)道(dao)中(zhong)的(de)(de)(de)(de)(de)(de)物料(liao)表面氣(qi)(qi)(qi)(qi)體(ti)速度(du)(du)低(di)于突變速度(du)(du)時(shi)(shi)，輸(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)將(jiang)會(hui)以低(di)流(liu)(liu)(liu)量(liang)(liang)通過管(guan)道(dao)橫(heng)截(jie)(jie)面的(de)(de)(de)(de)(de)(de)上部，在管(guan)道(dao)的(de)(de)(de)(de)(de)(de)剩余部分(fen)以高濃度(du)(du)低(di)速度(du)(du)的(de)(de)(de)(de)(de)(de)形式(shi)填(tian)充。有(you)時(shi)(shi)沿管(guan)道(dao)的(de)(de)(de)(de)(de)(de)橫(heng)截(jie)(jie)面會(hui)被(bei)(bei)(bei)填(tian)滿(man)，而(er)有(you)時(shi)(shi)只(zhi)是(shi)(shi)部分(fen)被(bei)(bei)(bei)填(tian)滿(man).

實際(ji)應用(yong)中(zhong), 按照(zhao)氣力(li)(li)(li)驅動形式可以分(fen)為(wei)負壓(ya)和正壓(ya)氣力(li)(li)(li)輸送(song), 在這兩(liang)種輸送(song)系(xi)統中(zhong), 根(gen)據(ju)流(liu)動狀態圖再區分(fen)分(fen)為(wei)稀相, 密(mi)(mi)相和流(liu)化態輸送(song)系(xi)統. 除此之外,根(gen)據(ju)喂料不同分(fen)為(wei)連(lian)續和批次(ci)輸送(song). 在高壓(ya)密(mi)(mi)相輸送(song)技術中(zhong)常采用(yong)批次(ci)的壓(ya)力(li)(li)(li)罐進行高壓(ya)輸送(song), 同時, 可以組合兩(liang)個壓(ya)力(li)(li)(li)罐設計達(da)到連(lian)續的輸送(song).

密相氣力輸送特點(dian):

● 用(yong)氣(qi)量小, 節能

● 無殘留輸送

● 不堵塞, 運行可靠

● 維護(hu)費用低

● 適合(he)于各類粉粒物(wu)料

● 壓(ya)力至(zhi)0. 6m p a可調

● 適合(he)于柔性化自動生產中(zhong)的物料高效輸送