密相氣力輸送(song)系列

氣力輸送(song)原理(li)

氣(qi)(qi)力(li)(li)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)系(xi)(xi)統(tong)可分類為(wei)(wei)不同的(de)(de)(de)(de)(de)(de)流(liu)動(dong)型式(shi)(shi)，其中兩(liang)種主要型式(shi)(shi)是：(a) 稀相(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)和（b）密相(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)每種流(liu)動(dong)型式(shi)(shi)可按物(wu)料(liao)(liao)與(yu)空氣(qi)(qi)的(de)(de)(de)(de)(de)(de)流(liu)量(liang)比(bi)率大小分類，其比(bi)率也被(bei)稱為(wei)(wei)“固氣(qi)(qi)比(bi)”： μ=ms/mf (1)許多(duo)稀相(xiang)(xiang)的(de)(de)(de)(de)(de)(de)運行范(fan)圍為(wei)(wei)0＜μ＜15，而密相(xiang)(xiang)通常(chang)(chang)是μ＞15。圖1所(suo)示的(de)(de)(de)(de)(de)(de)是典型輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)狀(zhuang)態(tai)圖。稀相(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)可以(yi)被(bei)認為(wei)(wei)是一(yi)種完全的(de)(de)(de)(de)(de)(de)懸(xuan)浮流(liu)，而密相(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)(chang)被(bei)認為(wei)(wei)是非懸(xuan)浮流(liu)。然而，如圖1所(suo)示，許多(duo)不同種類的(de)(de)(de)(de)(de)(de)密相(xiang)(xiang)（非懸(xuan)浮流(liu)）依靠散料(liao)(liao)的(de)(de)(de)(de)(de)(de)料(liao)(liao)性和流(liu)動(dong)性存在(zai)(zai)。密相(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)同樣也能被(bei)定義為(wei)(wei)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)物(wu)料(liao)(liao)完全填滿管(guan)(guan)道(dao)截(jie)(jie)面(mian)的(de)(de)(de)(de)(de)(de)一(yi)種輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)方式(shi)(shi)。稀相(xiang)(xiang)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)通常(chang)(chang)需(xu)要使用大量(liang)的(de)(de)(de)(de)(de)(de)高(gao)速(su)(su)氣(qi)(qi)體。氣(qi)(qi)流(liu)依靠升力(li)(li)和推動(dong)力(li)(li)以(yi)離散粒(li)(li)子的(de)(de)(de)(de)(de)(de)形式(shi)(shi)攜帶(dai)著物(wu)料(liao)(liao)。參(can)考圖1中所(suo)述的(de)(de)(de)(de)(de)(de)“懸(xuan)浮流(liu)”，稀相(xiang)(xiang)系(xi)(xi)統(tong)通常(chang)(chang)是最為(wei)(wei)被(bei)廣(guang)泛應用的(de)(de)(de)(de)(de)(de)氣(qi)(qi)力(li)(li)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)系(xi)(xi)統(tong)。由于稀相(xiang)(xiang)系(xi)(xi)統(tong)設(she)計(ji)的(de)(de)(de)(de)(de)(de)相(xiang)(xiang)對簡(jian)單性，它們同時(shi)(shi)也被(bei)頻繁的(de)(de)(de)(de)(de)(de)應用在(zai)(zai)工業領域。輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)氣(qi)(qi)體的(de)(de)(de)(de)(de)(de)速(su)(su)度減少到比(bi)保持粒(li)(li)子懸(xuan)浮狀(zhuang)態(tai)的(de)(de)(de)(de)(de)(de)臨界(jie)(jie)值更小時(shi)(shi)，導(dao)致(zhi)物(wu)料(liao)(liao)在(zai)(zai)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)管(guan)(guan)道(dao)的(de)(de)(de)(de)(de)(de)橫(heng)截(jie)(jie)面(mian)形成不均勻(yun)的(de)(de)(de)(de)(de)(de)分布。臨界(jie)(jie)氣(qi)(qi)體速(su)(su)度被(bei)稱為(wei)(wei)是水平(ping)輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)的(de)(de)(de)(de)(de)(de)跳躍速(su)(su)度，垂(chui)直輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)時(shi)(shi)堵塞(sai)。當(dang)水平(ping)管(guan)(guan)道(dao)中的(de)(de)(de)(de)(de)(de)物(wu)料(liao)(liao)表(biao)面(mian)氣(qi)(qi)體速(su)(su)度低(di)于突變速(su)(su)度時(shi)(shi)，輸(shu)(shu)(shu)送(song)(song)(song)(song)(song)將會(hui)以(yi)低(di)流(liu)量(liang)通過(guo)管(guan)(guan)道(dao)橫(heng)截(jie)(jie)面(mian)的(de)(de)(de)(de)(de)(de)上部(bu)，在(zai)(zai)管(guan)(guan)道(dao)的(de)(de)(de)(de)(de)(de)剩余部(bu)分以(yi)高(gao)濃(nong)度低(di)速(su)(su)度的(de)(de)(de)(de)(de)(de)形式(shi)(shi)填充。有(you)時(shi)(shi)沿(yan)管(guan)(guan)道(dao)的(de)(de)(de)(de)(de)(de)橫(heng)截(jie)(jie)面(mian)會(hui)被(bei)填滿，而有(you)時(shi)(shi)只是部(bu)分被(bei)填滿.

實際應(ying)用中, 按照(zhao)氣力驅動(dong)形式(shi)可(ke)以分(fen)為(wei)負(fu)壓(ya)和(he)正(zheng)壓(ya)氣力輸(shu)(shu)送(song)(song)(song), 在(zai)(zai)這兩種輸(shu)(shu)送(song)(song)(song)系統中, 根據(ju)流動(dong)狀態(tai)圖(tu)再(zai)區分(fen)分(fen)為(wei)稀相(xiang), 密(mi)相(xiang)和(he)流化態(tai)輸(shu)(shu)送(song)(song)(song)系統. 除(chu)此之外,根據(ju)喂料不同分(fen)為(wei)連續和(he)批次輸(shu)(shu)送(song)(song)(song). 在(zai)(zai)高壓(ya)密(mi)相(xiang)輸(shu)(shu)送(song)(song)(song)技術中常采用批次的(de)壓(ya)力罐進行高壓(ya)輸(shu)(shu)送(song)(song)(song), 同時, 可(ke)以組合兩個(ge)壓(ya)力罐設(she)計達到連續的(de)輸(shu)(shu)送(song)(song)(song).

密相氣力輸(shu)送特點:

● 用氣量小, 節(jie)能(neng)

● 無殘留輸(shu)送

● 不堵(du)塞(sai), 運行可靠(kao)

● 維護費用低

● 適合(he)于各(ge)類粉(fen)粒物(wu)料

● 壓力至0. 6m p a可調(diao)

● 適合于柔性化自動生產中的(de)物料高效輸送