密相(xiang)氣力輸送(song)系(xi)列(lie)

氣力輸(shu)送原(yuan)理

氣(qi)(qi)(qi)力(li)(li)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)系(xi)統可(ke)分(fen)(fen)類為不同(tong)的(de)(de)(de)(de)(de)流(liu)(liu)動型(xing)式，其中兩種(zhong)(zhong)(zhong)主要型(xing)式是(shi)：(a) 稀(xi)(xi)相(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)和（b）密(mi)相(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)每種(zhong)(zhong)(zhong)流(liu)(liu)動型(xing)式可(ke)按物(wu)料與空氣(qi)(qi)(qi)的(de)(de)(de)(de)(de)流(liu)(liu)量比(bi)率(lv)大小分(fen)(fen)類，其比(bi)率(lv)也(ye)(ye)(ye)被(bei)(bei)稱為“固(gu)氣(qi)(qi)(qi)比(bi)”： μ=ms/mf (1)許多(duo)稀(xi)(xi)相(xiang)(xiang)的(de)(de)(de)(de)(de)運行范(fan)圍為0＜μ＜15，而密(mi)相(xiang)(xiang)通(tong)常(chang)是(shi)μ＞15。圖(tu)(tu)1所(suo)(suo)示的(de)(de)(de)(de)(de)是(shi)典型(xing)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)狀(zhuang)態圖(tu)(tu)。稀(xi)(xi)相(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)可(ke)以被(bei)(bei)認(ren)為是(shi)一種(zhong)(zhong)(zhong)完(wan)全的(de)(de)(de)(de)(de)懸(xuan)(xuan)浮流(liu)(liu)，而密(mi)相(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)通(tong)常(chang)被(bei)(bei)認(ren)為是(shi)非懸(xuan)(xuan)浮流(liu)(liu)。然而，如(ru)圖(tu)(tu)1所(suo)(suo)示，許多(duo)不同(tong)種(zhong)(zhong)(zhong)類的(de)(de)(de)(de)(de)密(mi)相(xiang)(xiang)（非懸(xuan)(xuan)浮流(liu)(liu)）依靠散(san)料的(de)(de)(de)(de)(de)料性和流(liu)(liu)動性存在。密(mi)相(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)同(tong)樣也(ye)(ye)(ye)能被(bei)(bei)定(ding)義為輸(shu)(shu)送(song)(song)(song)(song)(song)(song)物(wu)料完(wan)全填滿管(guan)道(dao)(dao)(dao)截(jie)(jie)面(mian)的(de)(de)(de)(de)(de)一種(zhong)(zhong)(zhong)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)方式。稀(xi)(xi)相(xiang)(xiang)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)通(tong)常(chang)需要使用(yong)大量的(de)(de)(de)(de)(de)高速(su)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)。氣(qi)(qi)(qi)流(liu)(liu)依靠升力(li)(li)和推動力(li)(li)以離散(san)粒子(zi)的(de)(de)(de)(de)(de)形式攜帶著(zhu)物(wu)料。參考圖(tu)(tu)1中所(suo)(suo)述的(de)(de)(de)(de)(de)“懸(xuan)(xuan)浮流(liu)(liu)”，稀(xi)(xi)相(xiang)(xiang)系(xi)統通(tong)常(chang)是(shi)最為被(bei)(bei)廣泛應(ying)用(yong)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)力(li)(li)輸(shu)(shu)送(song)(song)(song)(song)(song)(song)系(xi)統。由于(yu)稀(xi)(xi)相(xiang)(xiang)系(xi)統設計的(de)(de)(de)(de)(de)相(xiang)(xiang)對簡單性，它(ta)們同(tong)時也(ye)(ye)(ye)被(bei)(bei)頻繁的(de)(de)(de)(de)(de)應(ying)用(yong)在工(gong)業(ye)領(ling)域。輸(shu)(shu)送(song)(song)(song)(song)(song)(song)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)的(de)(de)(de)(de)(de)速(su)度(du)減少到比(bi)保持粒子(zi)懸(xuan)(xuan)浮狀(zhuang)態的(de)(de)(de)(de)(de)臨(lin)界值更(geng)小時，導致物(wu)料在輸(shu)(shu)送(song)(song)(song)(song)(song)(song)管(guan)道(dao)(dao)(dao)的(de)(de)(de)(de)(de)橫(heng)截(jie)(jie)面(mian)形成不均勻(yun)的(de)(de)(de)(de)(de)分(fen)(fen)布(bu)。臨(lin)界氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)速(su)度(du)被(bei)(bei)稱為是(shi)水(shui)平輸(shu)(shu)送(song)(song)(song)(song)(song)(song)的(de)(de)(de)(de)(de)跳躍速(su)度(du)，垂直輸(shu)(shu)送(song)(song)(song)(song)(song)(song)時堵塞。當水(shui)平管(guan)道(dao)(dao)(dao)中的(de)(de)(de)(de)(de)物(wu)料表(biao)面(mian)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)速(su)度(du)低于(yu)突變(bian)速(su)度(du)時，輸(shu)(shu)送(song)(song)(song)(song)(song)(song)將會以低流(liu)(liu)量通(tong)過(guo)管(guan)道(dao)(dao)(dao)橫(heng)截(jie)(jie)面(mian)的(de)(de)(de)(de)(de)上部(bu)，在管(guan)道(dao)(dao)(dao)的(de)(de)(de)(de)(de)剩(sheng)余部(bu)分(fen)(fen)以高濃度(du)低速(su)度(du)的(de)(de)(de)(de)(de)形式填充。有時沿管(guan)道(dao)(dao)(dao)的(de)(de)(de)(de)(de)橫(heng)截(jie)(jie)面(mian)會被(bei)(bei)填滿，而有時只是(shi)部(bu)分(fen)(fen)被(bei)(bei)填滿.

實際(ji)應用中(zhong)(zhong), 按(an)照氣(qi)力(li)驅動(dong)形(xing)式可以(yi)分為負壓(ya)(ya)和(he)正壓(ya)(ya)氣(qi)力(li)輸送(song)(song), 在這兩(liang)(liang)種輸送(song)(song)系統中(zhong)(zhong), 根(gen)據(ju)流動(dong)狀態圖再區分分為稀相, 密相和(he)流化態輸送(song)(song)系統. 除此之外,根(gen)據(ju)喂料不同分為連續(xu)和(he)批次(ci)輸送(song)(song). 在高壓(ya)(ya)密相輸送(song)(song)技術中(zhong)(zhong)常采用批次(ci)的(de)壓(ya)(ya)力(li)罐進行高壓(ya)(ya)輸送(song)(song), 同時, 可以(yi)組合兩(liang)(liang)個(ge)壓(ya)(ya)力(li)罐設計達到連續(xu)的(de)輸送(song)(song).

密相(xiang)氣力(li)輸送特點(dian):

● 用(yong)氣量小, 節能(neng)

● 無殘留輸送

● 不堵塞, 運行可靠(kao)

● 維護費用低

● 適(shi)合(he)于各類粉粒物料

● 壓力至0. 6m p a可(ke)調

● 適(shi)合(he)于柔性化自動(dong)生(sheng)產中(zhong)的物料高效輸送