密(mi)相(xiang)氣力輸(shu)送(song)系列

氣力輸送原理(li)

氣(qi)(qi)力(li)輸(shu)(shu)(shu)(shu)送(song)(song)(song)系統(tong)可分類(lei)為(wei)(wei)(wei)不(bu)同(tong)(tong)的(de)(de)(de)(de)流(liu)動(dong)型式(shi)(shi)，其(qi)中(zhong)兩種(zhong)主要(yao)型式(shi)(shi)是(shi)(shi)(shi)：(a) 稀(xi)相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)和（b）密(mi)(mi)相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)每種(zhong)流(liu)動(dong)型式(shi)(shi)可按(an)物(wu)料與空氣(qi)(qi)的(de)(de)(de)(de)流(liu)量比(bi)率(lv)大(da)小(xiao)分類(lei)，其(qi)比(bi)率(lv)也(ye)被(bei)稱(cheng)為(wei)(wei)(wei)“固氣(qi)(qi)比(bi)”： μ=ms/mf (1)許多稀(xi)相(xiang)(xiang)(xiang)(xiang)(xiang)的(de)(de)(de)(de)運(yun)行范圍為(wei)(wei)(wei)0＜μ＜15，而(er)密(mi)(mi)相(xiang)(xiang)(xiang)(xiang)(xiang)通(tong)常是(shi)(shi)(shi)μ＞15。圖(tu)(tu)1所示的(de)(de)(de)(de)是(shi)(shi)(shi)典型輸(shu)(shu)(shu)(shu)送(song)(song)(song)狀態(tai)(tai)圖(tu)(tu)。稀(xi)相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)可以(yi)被(bei)認(ren)為(wei)(wei)(wei)是(shi)(shi)(shi)一種(zhong)完全(quan)的(de)(de)(de)(de)懸(xuan)(xuan)(xuan)浮(fu)流(liu)，而(er)密(mi)(mi)相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)通(tong)常被(bei)認(ren)為(wei)(wei)(wei)是(shi)(shi)(shi)非懸(xuan)(xuan)(xuan)浮(fu)流(liu)。然而(er)，如(ru)圖(tu)(tu)1所示，許多不(bu)同(tong)(tong)種(zhong)類(lei)的(de)(de)(de)(de)密(mi)(mi)相(xiang)(xiang)(xiang)(xiang)(xiang)（非懸(xuan)(xuan)(xuan)浮(fu)流(liu)）依靠(kao)散(san)料的(de)(de)(de)(de)料性(xing)(xing)和流(liu)動(dong)性(xing)(xing)存在(zai)(zai)。密(mi)(mi)相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)同(tong)(tong)樣也(ye)能(neng)被(bei)定義(yi)為(wei)(wei)(wei)輸(shu)(shu)(shu)(shu)送(song)(song)(song)物(wu)料完全(quan)填滿(man)管(guan)(guan)道(dao)截(jie)面的(de)(de)(de)(de)一種(zhong)輸(shu)(shu)(shu)(shu)送(song)(song)(song)方式(shi)(shi)。稀(xi)相(xiang)(xiang)(xiang)(xiang)(xiang)輸(shu)(shu)(shu)(shu)送(song)(song)(song)通(tong)常需要(yao)使用大(da)量的(de)(de)(de)(de)高速氣(qi)(qi)體。氣(qi)(qi)流(liu)依靠(kao)升力(li)和推動(dong)力(li)以(yi)離散(san)粒子(zi)(zi)的(de)(de)(de)(de)形(xing)式(shi)(shi)攜帶著物(wu)料。參考圖(tu)(tu)1中(zhong)所述的(de)(de)(de)(de)“懸(xuan)(xuan)(xuan)浮(fu)流(liu)”，稀(xi)相(xiang)(xiang)(xiang)(xiang)(xiang)系統(tong)通(tong)常是(shi)(shi)(shi)最為(wei)(wei)(wei)被(bei)廣泛應用的(de)(de)(de)(de)氣(qi)(qi)力(li)輸(shu)(shu)(shu)(shu)送(song)(song)(song)系統(tong)。由于稀(xi)相(xiang)(xiang)(xiang)(xiang)(xiang)系統(tong)設計的(de)(de)(de)(de)相(xiang)(xiang)(xiang)(xiang)(xiang)對簡單性(xing)(xing)，它們同(tong)(tong)時(shi)(shi)也(ye)被(bei)頻繁的(de)(de)(de)(de)應用在(zai)(zai)工業領域。輸(shu)(shu)(shu)(shu)送(song)(song)(song)氣(qi)(qi)體的(de)(de)(de)(de)速度(du)(du)(du)(du)減少到比(bi)保持粒子(zi)(zi)懸(xuan)(xuan)(xuan)浮(fu)狀態(tai)(tai)的(de)(de)(de)(de)臨(lin)(lin)界值更小(xiao)時(shi)(shi)，導致(zhi)物(wu)料在(zai)(zai)輸(shu)(shu)(shu)(shu)送(song)(song)(song)管(guan)(guan)道(dao)的(de)(de)(de)(de)橫截(jie)面形(xing)成(cheng)不(bu)均勻的(de)(de)(de)(de)分布(bu)。臨(lin)(lin)界氣(qi)(qi)體速度(du)(du)(du)(du)被(bei)稱(cheng)為(wei)(wei)(wei)是(shi)(shi)(shi)水(shui)平輸(shu)(shu)(shu)(shu)送(song)(song)(song)的(de)(de)(de)(de)跳躍速度(du)(du)(du)(du)，垂直輸(shu)(shu)(shu)(shu)送(song)(song)(song)時(shi)(shi)堵(du)塞。當水(shui)平管(guan)(guan)道(dao)中(zhong)的(de)(de)(de)(de)物(wu)料表面氣(qi)(qi)體速度(du)(du)(du)(du)低(di)于突變速度(du)(du)(du)(du)時(shi)(shi)，輸(shu)(shu)(shu)(shu)送(song)(song)(song)將(jiang)會以(yi)低(di)流(liu)量通(tong)過管(guan)(guan)道(dao)橫截(jie)面的(de)(de)(de)(de)上部(bu)，在(zai)(zai)管(guan)(guan)道(dao)的(de)(de)(de)(de)剩余部(bu)分以(yi)高濃(nong)度(du)(du)(du)(du)低(di)速度(du)(du)(du)(du)的(de)(de)(de)(de)形(xing)式(shi)(shi)填充。有(you)時(shi)(shi)沿管(guan)(guan)道(dao)的(de)(de)(de)(de)橫截(jie)面會被(bei)填滿(man)，而(er)有(you)時(shi)(shi)只是(shi)(shi)(shi)部(bu)分被(bei)填滿(man).

實際應用中(zhong), 按照氣(qi)力(li)驅動(dong)形式可(ke)以分(fen)為(wei)負壓(ya)(ya)(ya)(ya)和正壓(ya)(ya)(ya)(ya)氣(qi)力(li)輸(shu)(shu)送(song), 在這兩(liang)種輸(shu)(shu)送(song)系統(tong)中(zhong), 根據流動(dong)狀態(tai)圖再區分(fen)分(fen)為(wei)稀相(xiang), 密相(xiang)和流化態(tai)輸(shu)(shu)送(song)系統(tong). 除此之外,根據喂料不(bu)同(tong)分(fen)為(wei)連續和批(pi)次輸(shu)(shu)送(song). 在高(gao)壓(ya)(ya)(ya)(ya)密相(xiang)輸(shu)(shu)送(song)技術中(zhong)常采(cai)用批(pi)次的壓(ya)(ya)(ya)(ya)力(li)罐進行高(gao)壓(ya)(ya)(ya)(ya)輸(shu)(shu)送(song), 同(tong)時, 可(ke)以組合兩(liang)個壓(ya)(ya)(ya)(ya)力(li)罐設計達到連續的輸(shu)(shu)送(song).

密相氣力輸送特(te)點:

● 用(yong)氣量小(xiao), 節能

● 無殘留(liu)輸送

● 不堵(du)塞, 運行可靠

● 維護費用(yong)低

● 適(shi)合(he)于各類粉粒物料

● 壓力至0. 6m p a可調

● 適合于柔性化自動(dong)生產中的物料高效(xiao)輸送