密相气力(li)输送系列

气力输(shu)送(song)原理(li)

气(qi)(qi)(qi)(qi)力(li)(li)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)系统(tong)可分类为不同(tong)(tong)的(de)(de)(de)(de)(de)(de)流(liu)(liu)动(dong)型(xing)(xing)式，其(qi)中两种(zhong)主要型(xing)(xing)式是(shi)(shi)：(a) 稀(xi)相(xiang)(xiang)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)和（b）密(mi)(mi)相(xiang)(xiang)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)每种(zhong)流(liu)(liu)动(dong)型(xing)(xing)式可按物(wu)(wu)料(liao)(liao)与空气(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)流(liu)(liu)量比(bi)率(lv)大小分类，其(qi)比(bi)率(lv)也(ye)被(bei)称为“固气(qi)(qi)(qi)(qi)比(bi)”： μ=ms/mf (1)许多稀(xi)相(xiang)(xiang)的(de)(de)(de)(de)(de)(de)运行范围为0＜μ＜15，而(er)(er)密(mi)(mi)相(xiang)(xiang)通(tong)(tong)常是(shi)(shi)μ＞15。图1所(suo)(suo)示的(de)(de)(de)(de)(de)(de)是(shi)(shi)典型(xing)(xing)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)状态(tai)图。稀(xi)相(xiang)(xiang)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)可以(yi)被(bei)认为是(shi)(shi)一(yi)种(zhong)完全(quan)的(de)(de)(de)(de)(de)(de)悬(xuan)浮(fu)流(liu)(liu)，而(er)(er)密(mi)(mi)相(xiang)(xiang)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)通(tong)(tong)常被(bei)认为是(shi)(shi)非悬(xuan)浮(fu)流(liu)(liu)。然而(er)(er)，如(ru)图1所(suo)(suo)示，许多不同(tong)(tong)种(zhong)类的(de)(de)(de)(de)(de)(de)密(mi)(mi)相(xiang)(xiang)（非悬(xuan)浮(fu)流(liu)(liu)）依靠散(san)料(liao)(liao)的(de)(de)(de)(de)(de)(de)料(liao)(liao)性和流(liu)(liu)动(dong)性存在。密(mi)(mi)相(xiang)(xiang)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)同(tong)(tong)样也(ye)能被(bei)定义为输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)物(wu)(wu)料(liao)(liao)完全(quan)填满管(guan)道(dao)截面(mian)的(de)(de)(de)(de)(de)(de)一(yi)种(zhong)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)方(fang)式。稀(xi)相(xiang)(xiang)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)通(tong)(tong)常需(xu)要使(shi)用(yong)大量的(de)(de)(de)(de)(de)(de)高速(su)气(qi)(qi)(qi)(qi)体(ti)。气(qi)(qi)(qi)(qi)流(liu)(liu)依靠升力(li)(li)和推(tui)动(dong)力(li)(li)以(yi)离散(san)粒子(zi)的(de)(de)(de)(de)(de)(de)形式携带着(zhe)物(wu)(wu)料(liao)(liao)。参考图1中所(suo)(suo)述的(de)(de)(de)(de)(de)(de)“悬(xuan)浮(fu)流(liu)(liu)”，稀(xi)相(xiang)(xiang)系统(tong)通(tong)(tong)常是(shi)(shi)最为被(bei)广泛应用(yong)的(de)(de)(de)(de)(de)(de)气(qi)(qi)(qi)(qi)力(li)(li)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)系统(tong)。由于(yu)(yu)稀(xi)相(xiang)(xiang)系统(tong)设计的(de)(de)(de)(de)(de)(de)相(xiang)(xiang)对简单性，它们同(tong)(tong)时(shi)(shi)也(ye)被(bei)频繁的(de)(de)(de)(de)(de)(de)应用(yong)在工业领域。输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)气(qi)(qi)(qi)(qi)体(ti)的(de)(de)(de)(de)(de)(de)速(su)度减少到(dao)比(bi)保持粒子(zi)悬(xuan)浮(fu)状态(tai)的(de)(de)(de)(de)(de)(de)临(lin)界值更小时(shi)(shi)，导致(zhi)物(wu)(wu)料(liao)(liao)在输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)管(guan)道(dao)的(de)(de)(de)(de)(de)(de)横(heng)截面(mian)形成不均(jun)匀的(de)(de)(de)(de)(de)(de)分布。临(lin)界气(qi)(qi)(qi)(qi)体(ti)速(su)度被(bei)称为是(shi)(shi)水平(ping)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)的(de)(de)(de)(de)(de)(de)跳跃速(su)度，垂(chui)直(zhi)输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)时(shi)(shi)堵塞(sai)。当(dang)水平(ping)管(guan)道(dao)中的(de)(de)(de)(de)(de)(de)物(wu)(wu)料(liao)(liao)表面(mian)气(qi)(qi)(qi)(qi)体(ti)速(su)度低于(yu)(yu)突变(bian)速(su)度时(shi)(shi)，输(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)将会(hui)以(yi)低流(liu)(liu)量通(tong)(tong)过管(guan)道(dao)横(heng)截面(mian)的(de)(de)(de)(de)(de)(de)上(shang)部，在管(guan)道(dao)的(de)(de)(de)(de)(de)(de)剩(sheng)余部分以(yi)高浓度低速(su)度的(de)(de)(de)(de)(de)(de)形式填充。有时(shi)(shi)沿管(guan)道(dao)的(de)(de)(de)(de)(de)(de)横(heng)截面(mian)会(hui)被(bei)填满，而(er)(er)有时(shi)(shi)只是(shi)(shi)部分被(bei)填满.

实际应用中, 按(an)照(zhao)气(qi)力(li)(li)驱动形式可以分(fen)为负压和(he)正压气(qi)力(li)(li)输(shu)(shu)(shu)送(song)(song)(song), 在这两种输(shu)(shu)(shu)送(song)(song)(song)系统中, 根据(ju)(ju)流动状态(tai)(tai)图再区(qu)分(fen)分(fen)为稀相(xiang), 密相(xiang)和(he)流化态(tai)(tai)输(shu)(shu)(shu)送(song)(song)(song)系统. 除(chu)此之外,根据(ju)(ju)喂料不同(tong)分(fen)为连续(xu)和(he)批(pi)次(ci)输(shu)(shu)(shu)送(song)(song)(song). 在高(gao)(gao)压密相(xiang)输(shu)(shu)(shu)送(song)(song)(song)技(ji)术中常(chang)采用批(pi)次(ci)的压力(li)(li)罐进行(xing)高(gao)(gao)压输(shu)(shu)(shu)送(song)(song)(song), 同(tong)时, 可以组合两个压力(li)(li)罐设计达到连续(xu)的输(shu)(shu)(shu)送(song)(song)(song).

密相气力输送特(te)点:

● 用(yong)气量(liang)小, 节能

● 无残(can)留输送

● 不堵塞(sai), 运行可(ke)靠

● 维护费用低

● 适(shi)合于各类粉(fen)粒物料

● 压力至0. 6m p a可调

● 适合于柔(rou)性化(hua)自动(dong)生(sheng)产中的物料高效(xiao)输送