密相(xiang)氣力輸(shu)送系列

氣力輸(shu)送原理

氣(qi)(qi)力(li)(li)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)系統(tong)可分類為(wei)(wei)(wei)(wei)不同(tong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)流(liu)動型(xing)式(shi)(shi)，其中(zhong)(zhong)兩種主要型(xing)式(shi)(shi)是：(a) 稀(xi)相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)和(he)（b）密(mi)相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)每(mei)種流(liu)動型(xing)式(shi)(shi)可按物(wu)料與空氣(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)流(liu)量比(bi)率(lv)大(da)小分類，其比(bi)率(lv)也被(bei)稱為(wei)(wei)(wei)(wei)“固氣(qi)(qi)比(bi)”： μ=ms/mf (1)許多稀(xi)相的(de)(de)(de)(de)(de)(de)(de)(de)(de)運行范(fan)圍為(wei)(wei)(wei)(wei)0＜μ＜15，而(er)密(mi)相通常(chang)是μ＞15。圖(tu)1所示的(de)(de)(de)(de)(de)(de)(de)(de)(de)是典型(xing)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)狀態圖(tu)。稀(xi)相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)可以(yi)被(bei)認(ren)為(wei)(wei)(wei)(wei)是一(yi)種完(wan)全的(de)(de)(de)(de)(de)(de)(de)(de)(de)懸(xuan)浮(fu)流(liu)，而(er)密(mi)相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)被(bei)認(ren)為(wei)(wei)(wei)(wei)是非懸(xuan)浮(fu)流(liu)。然而(er)，如圖(tu)1所示，許多不同(tong)種類的(de)(de)(de)(de)(de)(de)(de)(de)(de)密(mi)相（非懸(xuan)浮(fu)流(liu)）依靠(kao)(kao)散料的(de)(de)(de)(de)(de)(de)(de)(de)(de)料性和(he)流(liu)動性存在(zai)。密(mi)相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)同(tong)樣(yang)也能(neng)被(bei)定義(yi)為(wei)(wei)(wei)(wei)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)物(wu)料完(wan)全填滿(man)管(guan)(guan)道(dao)(dao)截(jie)面(mian)(mian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)一(yi)種輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)方式(shi)(shi)。稀(xi)相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)需要使用大(da)量的(de)(de)(de)(de)(de)(de)(de)(de)(de)高(gao)速(su)(su)氣(qi)(qi)體(ti)(ti)(ti)。氣(qi)(qi)流(liu)依靠(kao)(kao)升力(li)(li)和(he)推動力(li)(li)以(yi)離散粒(li)子的(de)(de)(de)(de)(de)(de)(de)(de)(de)形式(shi)(shi)攜帶著(zhu)物(wu)料。參考圖(tu)1中(zhong)(zhong)所述(shu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)“懸(xuan)浮(fu)流(liu)”，稀(xi)相系統(tong)通常(chang)是最(zui)為(wei)(wei)(wei)(wei)被(bei)廣泛應(ying)用的(de)(de)(de)(de)(de)(de)(de)(de)(de)氣(qi)(qi)力(li)(li)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)系統(tong)。由于(yu)稀(xi)相系統(tong)設計的(de)(de)(de)(de)(de)(de)(de)(de)(de)相對簡單(dan)性，它(ta)們(men)同(tong)時(shi)(shi)(shi)也被(bei)頻繁的(de)(de)(de)(de)(de)(de)(de)(de)(de)應(ying)用在(zai)工(gong)業領(ling)域。輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)氣(qi)(qi)體(ti)(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)(de)(de)速(su)(su)度(du)(du)減少到比(bi)保持粒(li)子懸(xuan)浮(fu)狀態的(de)(de)(de)(de)(de)(de)(de)(de)(de)臨(lin)界值更小時(shi)(shi)(shi)，導致物(wu)料在(zai)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)管(guan)(guan)道(dao)(dao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)橫截(jie)面(mian)(mian)形成不均勻的(de)(de)(de)(de)(de)(de)(de)(de)(de)分布。臨(lin)界氣(qi)(qi)體(ti)(ti)(ti)速(su)(su)度(du)(du)被(bei)稱為(wei)(wei)(wei)(wei)是水(shui)平輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)的(de)(de)(de)(de)(de)(de)(de)(de)(de)跳躍速(su)(su)度(du)(du)，垂直輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)時(shi)(shi)(shi)堵(du)塞。當水(shui)平管(guan)(guan)道(dao)(dao)中(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)物(wu)料表面(mian)(mian)氣(qi)(qi)體(ti)(ti)(ti)速(su)(su)度(du)(du)低(di)于(yu)突變速(su)(su)度(du)(du)時(shi)(shi)(shi)，輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)將會以(yi)低(di)流(liu)量通過管(guan)(guan)道(dao)(dao)橫截(jie)面(mian)(mian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)上部(bu)，在(zai)管(guan)(guan)道(dao)(dao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)剩余部(bu)分以(yi)高(gao)濃度(du)(du)低(di)速(su)(su)度(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)形式(shi)(shi)填充。有時(shi)(shi)(shi)沿(yan)管(guan)(guan)道(dao)(dao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)橫截(jie)面(mian)(mian)會被(bei)填滿(man)，而(er)有時(shi)(shi)(shi)只是部(bu)分被(bei)填滿(man).

實際應(ying)用中, 按(an)照氣力驅動形式(shi)可以分為(wei)負壓和正壓氣力輸(shu)送, 在這兩種輸(shu)送系(xi)統中, 根據(ju)流動狀(zhuang)態圖再區(qu)分分為(wei)稀相, 密(mi)相和流化態輸(shu)送系(xi)統. 除此(ci)之(zhi)外(wai),根據(ju)喂料不(bu)同分為(wei)連(lian)續和批(pi)次(ci)輸(shu)送. 在高壓密(mi)相輸(shu)送技術中常(chang)采用批(pi)次(ci)的壓力罐進行(xing)高壓輸(shu)送, 同時, 可以組(zu)合兩個壓力罐設(she)計(ji)達到連(lian)續的輸(shu)送.

密相氣力輸送(song)特(te)點:

● 用氣量(liang)小, 節能

● 無殘留輸送

● 不堵塞, 運行(xing)可靠

● 維護費用(yong)低

● 適合于各類(lei)粉粒物料

● 壓力至0. 6m p a可調

● 適(shi)合于柔性化自(zi)動生(sheng)產(chan)中的物(wu)料高(gao)效輸(shu)送