密相氣力(li)輸送系列

氣(qi)力輸送原理

氣(qi)(qi)力(li)(li)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)系(xi)統可分類(lei)(lei)為(wei)不同(tong)(tong)(tong)的(de)(de)(de)(de)流(liu)(liu)(liu)動(dong)型式，其中兩(liang)種主要型式是(shi)：(a) 稀(xi)(xi)相(xiang)(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)和（b）密(mi)(mi)相(xiang)(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)每種流(liu)(liu)(liu)動(dong)型式可按(an)物(wu)料(liao)(liao)與空氣(qi)(qi)的(de)(de)(de)(de)流(liu)(liu)(liu)量(liang)比(bi)率大(da)小分類(lei)(lei)，其比(bi)率也被(bei)(bei)稱為(wei)“固氣(qi)(qi)比(bi)”： μ=ms/mf (1)許多(duo)稀(xi)(xi)相(xiang)(xiang)(xiang)的(de)(de)(de)(de)運行范(fan)圍為(wei)0＜μ＜15，而(er)密(mi)(mi)相(xiang)(xiang)(xiang)通(tong)常(chang)(chang)(chang)是(shi)μ＞15。圖(tu)(tu)1所(suo)示的(de)(de)(de)(de)是(shi)典型輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)狀態圖(tu)(tu)。稀(xi)(xi)相(xiang)(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)可以(yi)被(bei)(bei)認為(wei)是(shi)一種完全的(de)(de)(de)(de)懸(xuan)浮(fu)流(liu)(liu)(liu)，而(er)密(mi)(mi)相(xiang)(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)通(tong)常(chang)(chang)(chang)被(bei)(bei)認為(wei)是(shi)非(fei)懸(xuan)浮(fu)流(liu)(liu)(liu)。然而(er)，如圖(tu)(tu)1所(suo)示，許多(duo)不同(tong)(tong)(tong)種類(lei)(lei)的(de)(de)(de)(de)密(mi)(mi)相(xiang)(xiang)(xiang)（非(fei)懸(xuan)浮(fu)流(liu)(liu)(liu)）依靠(kao)散(san)料(liao)(liao)的(de)(de)(de)(de)料(liao)(liao)性(xing)(xing)和流(liu)(liu)(liu)動(dong)性(xing)(xing)存在。密(mi)(mi)相(xiang)(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)同(tong)(tong)(tong)樣也能被(bei)(bei)定義為(wei)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)物(wu)料(liao)(liao)完全填(tian)(tian)滿管(guan)(guan)道(dao)(dao)(dao)截面的(de)(de)(de)(de)一種輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)方(fang)式。稀(xi)(xi)相(xiang)(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)通(tong)常(chang)(chang)(chang)需要使用(yong)(yong)大(da)量(liang)的(de)(de)(de)(de)高速(su)氣(qi)(qi)體(ti)。氣(qi)(qi)流(liu)(liu)(liu)依靠(kao)升力(li)(li)和推動(dong)力(li)(li)以(yi)離散(san)粒子的(de)(de)(de)(de)形(xing)式攜帶著(zhu)物(wu)料(liao)(liao)。參考圖(tu)(tu)1中所(suo)述(shu)的(de)(de)(de)(de)“懸(xuan)浮(fu)流(liu)(liu)(liu)”，稀(xi)(xi)相(xiang)(xiang)(xiang)系(xi)統通(tong)常(chang)(chang)(chang)是(shi)最為(wei)被(bei)(bei)廣(guang)泛應用(yong)(yong)的(de)(de)(de)(de)氣(qi)(qi)力(li)(li)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)系(xi)統。由于(yu)稀(xi)(xi)相(xiang)(xiang)(xiang)系(xi)統設計的(de)(de)(de)(de)相(xiang)(xiang)(xiang)對簡單性(xing)(xing)，它們同(tong)(tong)(tong)時(shi)(shi)也被(bei)(bei)頻(pin)繁的(de)(de)(de)(de)應用(yong)(yong)在工業(ye)領域。輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)氣(qi)(qi)體(ti)的(de)(de)(de)(de)速(su)度(du)減少到比(bi)保持粒子懸(xuan)浮(fu)狀態的(de)(de)(de)(de)臨(lin)界(jie)(jie)值更小時(shi)(shi)，導致物(wu)料(liao)(liao)在輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)管(guan)(guan)道(dao)(dao)(dao)的(de)(de)(de)(de)橫截面形(xing)成不均勻的(de)(de)(de)(de)分布。臨(lin)界(jie)(jie)氣(qi)(qi)體(ti)速(su)度(du)被(bei)(bei)稱為(wei)是(shi)水(shui)平輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)的(de)(de)(de)(de)跳(tiao)躍速(su)度(du)，垂直輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)時(shi)(shi)堵塞。當水(shui)平管(guan)(guan)道(dao)(dao)(dao)中的(de)(de)(de)(de)物(wu)料(liao)(liao)表面氣(qi)(qi)體(ti)速(su)度(du)低(di)于(yu)突變速(su)度(du)時(shi)(shi)，輸(shu)(shu)送(song)(song)(song)(song)(song)(song)(song)將會(hui)以(yi)低(di)流(liu)(liu)(liu)量(liang)通(tong)過管(guan)(guan)道(dao)(dao)(dao)橫截面的(de)(de)(de)(de)上(shang)部(bu)，在管(guan)(guan)道(dao)(dao)(dao)的(de)(de)(de)(de)剩余部(bu)分以(yi)高濃度(du)低(di)速(su)度(du)的(de)(de)(de)(de)形(xing)式填(tian)(tian)充。有(you)時(shi)(shi)沿管(guan)(guan)道(dao)(dao)(dao)的(de)(de)(de)(de)橫截面會(hui)被(bei)(bei)填(tian)(tian)滿，而(er)有(you)時(shi)(shi)只(zhi)是(shi)部(bu)分被(bei)(bei)填(tian)(tian)滿.

實際應用中(zhong), 按照(zhao)氣力驅動形式可以分(fen)(fen)為(wei)負壓(ya)和(he)正壓(ya)氣力輸送(song), 在這兩(liang)種輸送(song)系(xi)統(tong)中(zhong), 根據流(liu)動狀(zhuang)態圖再區(qu)分(fen)(fen)分(fen)(fen)為(wei)稀(xi)相(xiang), 密相(xiang)和(he)流(liu)化態輸送(song)系(xi)統(tong). 除此之外,根據喂料不同分(fen)(fen)為(wei)連續(xu)(xu)和(he)批次(ci)輸送(song). 在高壓(ya)密相(xiang)輸送(song)技術中(zhong)常采(cai)用批次(ci)的壓(ya)力罐進(jin)行高壓(ya)輸送(song), 同時, 可以組(zu)合兩(liang)個壓(ya)力罐設計(ji)達到連續(xu)(xu)的輸送(song).

密相氣力輸送(song)特點:

● 用氣量小, 節能

● 無(wu)殘留輸(shu)送

● 不堵塞, 運行(xing)可(ke)靠(kao)

● 維護(hu)費用低

● 適(shi)合于各(ge)類(lei)粉粒物料

● 壓力至0. 6m p a可調

● 適(shi)合(he)于柔性化自動生產中的物料高(gao)效輸送