密相(xiang)氣力輸送(song)系列

氣(qi)力輸送(song)原理

氣(qi)(qi)(qi)力(li)輸(shu)(shu)(shu)(shu)送(song)(song)(song)系(xi)統(tong)可(ke)分(fen)(fen)類為不同(tong)的(de)(de)(de)(de)(de)流(liu)(liu)動(dong)型(xing)式，其中兩種主要(yao)型(xing)式是(shi)(shi)(shi)(shi)：(a) 稀(xi)相(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)和（b）密相(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)每種流(liu)(liu)動(dong)型(xing)式可(ke)按(an)物(wu)(wu)料(liao)(liao)與空氣(qi)(qi)(qi)的(de)(de)(de)(de)(de)流(liu)(liu)量(liang)比率大小分(fen)(fen)類，其比率也被(bei)(bei)(bei)稱(cheng)為“固氣(qi)(qi)(qi)比”： μ=ms/mf (1)許多稀(xi)相(xiang)的(de)(de)(de)(de)(de)運(yun)行(xing)范圍為0＜μ＜15，而密相(xiang)通(tong)常(chang)(chang)是(shi)(shi)(shi)(shi)μ＞15。圖1所(suo)(suo)(suo)示的(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)典型(xing)輸(shu)(shu)(shu)(shu)送(song)(song)(song)狀態圖。稀(xi)相(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)可(ke)以(yi)被(bei)(bei)(bei)認為是(shi)(shi)(shi)(shi)一(yi)種完全的(de)(de)(de)(de)(de)懸(xuan)(xuan)浮(fu)流(liu)(liu)，而密相(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)通(tong)常(chang)(chang)被(bei)(bei)(bei)認為是(shi)(shi)(shi)(shi)非懸(xuan)(xuan)浮(fu)流(liu)(liu)。然而，如圖1所(suo)(suo)(suo)示，許多不同(tong)種類的(de)(de)(de)(de)(de)密相(xiang)（非懸(xuan)(xuan)浮(fu)流(liu)(liu)）依靠(kao)散(san)料(liao)(liao)的(de)(de)(de)(de)(de)料(liao)(liao)性和流(liu)(liu)動(dong)性存在(zai)。密相(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)同(tong)樣也能被(bei)(bei)(bei)定義(yi)為輸(shu)(shu)(shu)(shu)送(song)(song)(song)物(wu)(wu)料(liao)(liao)完全填滿管道(dao)(dao)(dao)截(jie)面的(de)(de)(de)(de)(de)一(yi)種輸(shu)(shu)(shu)(shu)送(song)(song)(song)方式。稀(xi)相(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)通(tong)常(chang)(chang)需要(yao)使(shi)用(yong)大量(liang)的(de)(de)(de)(de)(de)高(gao)速(su)(su)氣(qi)(qi)(qi)體(ti)(ti)。氣(qi)(qi)(qi)流(liu)(liu)依靠(kao)升力(li)和推動(dong)力(li)以(yi)離散(san)粒子(zi)的(de)(de)(de)(de)(de)形式攜帶著物(wu)(wu)料(liao)(liao)。參考圖1中所(suo)(suo)(suo)述的(de)(de)(de)(de)(de)“懸(xuan)(xuan)浮(fu)流(liu)(liu)”，稀(xi)相(xiang)系(xi)統(tong)通(tong)常(chang)(chang)是(shi)(shi)(shi)(shi)最(zui)為被(bei)(bei)(bei)廣泛應用(yong)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)力(li)輸(shu)(shu)(shu)(shu)送(song)(song)(song)系(xi)統(tong)。由于(yu)稀(xi)相(xiang)系(xi)統(tong)設計的(de)(de)(de)(de)(de)相(xiang)對(dui)簡單性，它們同(tong)時也被(bei)(bei)(bei)頻繁(fan)的(de)(de)(de)(de)(de)應用(yong)在(zai)工業領域。輸(shu)(shu)(shu)(shu)送(song)(song)(song)氣(qi)(qi)(qi)體(ti)(ti)的(de)(de)(de)(de)(de)速(su)(su)度(du)(du)(du)減少到比保持(chi)粒子(zi)懸(xuan)(xuan)浮(fu)狀態的(de)(de)(de)(de)(de)臨(lin)界(jie)值更小時，導(dao)致物(wu)(wu)料(liao)(liao)在(zai)輸(shu)(shu)(shu)(shu)送(song)(song)(song)管道(dao)(dao)(dao)的(de)(de)(de)(de)(de)橫(heng)截(jie)面形成不均勻的(de)(de)(de)(de)(de)分(fen)(fen)布。臨(lin)界(jie)氣(qi)(qi)(qi)體(ti)(ti)速(su)(su)度(du)(du)(du)被(bei)(bei)(bei)稱(cheng)為是(shi)(shi)(shi)(shi)水(shui)平輸(shu)(shu)(shu)(shu)送(song)(song)(song)的(de)(de)(de)(de)(de)跳躍速(su)(su)度(du)(du)(du)，垂直輸(shu)(shu)(shu)(shu)送(song)(song)(song)時堵塞。當水(shui)平管道(dao)(dao)(dao)中的(de)(de)(de)(de)(de)物(wu)(wu)料(liao)(liao)表面氣(qi)(qi)(qi)體(ti)(ti)速(su)(su)度(du)(du)(du)低(di)(di)于(yu)突變速(su)(su)度(du)(du)(du)時，輸(shu)(shu)(shu)(shu)送(song)(song)(song)將會以(yi)低(di)(di)流(liu)(liu)量(liang)通(tong)過管道(dao)(dao)(dao)橫(heng)截(jie)面的(de)(de)(de)(de)(de)上部(bu)，在(zai)管道(dao)(dao)(dao)的(de)(de)(de)(de)(de)剩余(yu)部(bu)分(fen)(fen)以(yi)高(gao)濃度(du)(du)(du)低(di)(di)速(su)(su)度(du)(du)(du)的(de)(de)(de)(de)(de)形式填充。有時沿管道(dao)(dao)(dao)的(de)(de)(de)(de)(de)橫(heng)截(jie)面會被(bei)(bei)(bei)填滿，而有時只是(shi)(shi)(shi)(shi)部(bu)分(fen)(fen)被(bei)(bei)(bei)填滿.

實際應用中(zhong), 按照(zhao)氣力(li)(li)驅動(dong)形式可(ke)以分(fen)(fen)為(wei)負(fu)壓(ya)(ya)和正壓(ya)(ya)氣力(li)(li)輸送(song)(song), 在(zai)這兩種(zhong)輸送(song)(song)系統中(zhong), 根(gen)(gen)據流(liu)動(dong)狀態(tai)圖再區(qu)分(fen)(fen)分(fen)(fen)為(wei)稀相(xiang)(xiang), 密(mi)相(xiang)(xiang)和流(liu)化(hua)態(tai)輸送(song)(song)系統. 除(chu)此(ci)之(zhi)外,根(gen)(gen)據喂(wei)料(liao)不同分(fen)(fen)為(wei)連(lian)續(xu)(xu)和批次輸送(song)(song). 在(zai)高(gao)壓(ya)(ya)密(mi)相(xiang)(xiang)輸送(song)(song)技術中(zhong)常采用批次的壓(ya)(ya)力(li)(li)罐進行高(gao)壓(ya)(ya)輸送(song)(song), 同時, 可(ke)以組合(he)兩個(ge)壓(ya)(ya)力(li)(li)罐設(she)計達到連(lian)續(xu)(xu)的輸送(song)(song).

密相(xiang)氣力(li)輸送特點:

● 用氣量小, 節(jie)能

● 無殘留輸送

● 不堵塞, 運行可(ke)靠

● 維護費用低

● 適合于各類(lei)粉粒物料(liao)

● 壓(ya)力至(zhi)0. 6m p a可調

● 適合于柔性化自動(dong)生產中的物料高(gao)效輸(shu)送