密相氣力(li)輸送系列

氣力輸送原理(li)

氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)力(li)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)系(xi)統可分(fen)(fen)類(lei)為不同(tong)(tong)的(de)(de)(de)(de)(de)(de)流(liu)動型(xing)式，其(qi)中(zhong)兩(liang)種(zhong)主(zhu)要(yao)(yao)型(xing)式是(shi)(shi)(shi)：(a) 稀(xi)(xi)(xi)(xi)相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)和（b）密相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)每種(zhong)流(liu)動型(xing)式可按物(wu)(wu)料(liao)(liao)與空氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)流(liu)量比率大小(xiao)分(fen)(fen)類(lei)，其(qi)比率也(ye)被(bei)(bei)稱(cheng)(cheng)為“固氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)比”： μ=ms/mf (1)許(xu)多稀(xi)(xi)(xi)(xi)相的(de)(de)(de)(de)(de)(de)運行范圍(wei)為0＜μ＜15，而密相通常(chang)是(shi)(shi)(shi)μ＞15。圖(tu)(tu)1所(suo)示的(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)典型(xing)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)狀(zhuang)態(tai)圖(tu)(tu)。稀(xi)(xi)(xi)(xi)相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)可以被(bei)(bei)認為是(shi)(shi)(shi)一種(zhong)完(wan)全的(de)(de)(de)(de)(de)(de)懸(xuan)(xuan)浮(fu)流(liu)，而密相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)被(bei)(bei)認為是(shi)(shi)(shi)非懸(xuan)(xuan)浮(fu)流(liu)。然而，如圖(tu)(tu)1所(suo)示，許(xu)多不同(tong)(tong)種(zhong)類(lei)的(de)(de)(de)(de)(de)(de)密相（非懸(xuan)(xuan)浮(fu)流(liu)）依(yi)靠散料(liao)(liao)的(de)(de)(de)(de)(de)(de)料(liao)(liao)性和流(liu)動性存(cun)在(zai)。密相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)同(tong)(tong)樣也(ye)能被(bei)(bei)定(ding)義為輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)物(wu)(wu)料(liao)(liao)完(wan)全填(tian)滿(man)管(guan)道截面的(de)(de)(de)(de)(de)(de)一種(zhong)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)方式。稀(xi)(xi)(xi)(xi)相輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)需要(yao)(yao)使用(yong)大量的(de)(de)(de)(de)(de)(de)高(gao)速(su)(su)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)體。氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)流(liu)依(yi)靠升力(li)和推動力(li)以離(li)散粒子(zi)的(de)(de)(de)(de)(de)(de)形式攜帶著(zhu)物(wu)(wu)料(liao)(liao)。參考圖(tu)(tu)1中(zhong)所(suo)述的(de)(de)(de)(de)(de)(de)“懸(xuan)(xuan)浮(fu)流(liu)”，稀(xi)(xi)(xi)(xi)相系(xi)統通常(chang)是(shi)(shi)(shi)最為被(bei)(bei)廣(guang)泛應用(yong)的(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)力(li)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)系(xi)統。由(you)于(yu)稀(xi)(xi)(xi)(xi)相系(xi)統設計的(de)(de)(de)(de)(de)(de)相對(dui)簡單(dan)性，它(ta)們(men)同(tong)(tong)時(shi)也(ye)被(bei)(bei)頻繁的(de)(de)(de)(de)(de)(de)應用(yong)在(zai)工業(ye)領域。輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)體的(de)(de)(de)(de)(de)(de)速(su)(su)度(du)(du)減少到比保持(chi)粒子(zi)懸(xuan)(xuan)浮(fu)狀(zhuang)態(tai)的(de)(de)(de)(de)(de)(de)臨界(jie)值更小(xiao)時(shi)，導(dao)致物(wu)(wu)料(liao)(liao)在(zai)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)管(guan)道的(de)(de)(de)(de)(de)(de)橫(heng)截面形成不均勻(yun)的(de)(de)(de)(de)(de)(de)分(fen)(fen)布。臨界(jie)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)體速(su)(su)度(du)(du)被(bei)(bei)稱(cheng)(cheng)為是(shi)(shi)(shi)水平輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)的(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)堵塞。當水平管(guan)道中(zhong)的(de)(de)(de)(de)(de)(de)物(wu)(wu)料(liao)(liao)表面氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)體速(su)(su)度(du)(du)低(di)(di)于(yu)突變(bian)速(su)(su)度(du)(du)時(shi)，輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)將(jiang)會(hui)以低(di)(di)流(liu)量通過管(guan)道橫(heng)截面的(de)(de)(de)(de)(de)(de)上部(bu)，在(zai)管(guan)道的(de)(de)(de)(de)(de)(de)剩余部(bu)分(fen)(fen)以高(gao)濃度(du)(du)低(di)(di)速(su)(su)度(du)(du)的(de)(de)(de)(de)(de)(de)形式填(tian)充。有時(shi)沿管(guan)道的(de)(de)(de)(de)(de)(de)橫(heng)截面會(hui)被(bei)(bei)填(tian)滿(man)，而有時(shi)只(zhi)是(shi)(shi)(shi)部(bu)分(fen)(fen)被(bei)(bei)填(tian)滿(man).

實際應(ying)用中, 按照氣(qi)力驅動形式可(ke)(ke)以分(fen)(fen)為(wei)(wei)負壓(ya)(ya)和正壓(ya)(ya)氣(qi)力輸(shu)(shu)(shu)(shu)送(song), 在(zai)(zai)這(zhe)兩種輸(shu)(shu)(shu)(shu)送(song)系統中, 根據(ju)流(liu)動狀態(tai)圖再區分(fen)(fen)分(fen)(fen)為(wei)(wei)稀相, 密相和流(liu)化態(tai)輸(shu)(shu)(shu)(shu)送(song)系統. 除(chu)此之外(wai),根據(ju)喂料(liao)不同分(fen)(fen)為(wei)(wei)連續和批次(ci)輸(shu)(shu)(shu)(shu)送(song). 在(zai)(zai)高(gao)壓(ya)(ya)密相輸(shu)(shu)(shu)(shu)送(song)技術中常采用批次(ci)的(de)壓(ya)(ya)力罐進行(xing)高(gao)壓(ya)(ya)輸(shu)(shu)(shu)(shu)送(song), 同時, 可(ke)(ke)以組合兩個壓(ya)(ya)力罐設計(ji)達到連續的(de)輸(shu)(shu)(shu)(shu)送(song).

密(mi)相氣力輸送(song)特點:

● 用(yong)氣量小(xiao), 節(jie)能

● 無殘留輸(shu)送

● 不(bu)堵塞, 運行(xing)可靠

● 維護費(fei)用(yong)低(di)

● 適合于各類(lei)粉(fen)粒物料

● 壓力至0. 6m p a可(ke)調(diao)

● 適(shi)合于柔性化(hua)自動生產(chan)中的物(wu)料高效輸(shu)送(song)