发布时间：2014-05-23 00:00:00 浏览次数：次
电动分级筛在(zai)(zai)实际(ji)筛(shai)(shai)(shai)(shai)(shai)分(fen)现场，比(bi)网孔(kong)(kong)(kong)小(xiao)的(de)(de)(de)(de)颗(ke)(ke)粒(li)(li)(li)(li)(li)从出料口端排出，其中物(wu)料颗(ke)(ke)粒(li)(li)(li)(li)(li)大(da)小(xiao)与筛(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)的(de)(de)(de)(de)相对尺寸至关重要，让我(wo)们一起讨论下(xia)吧(ba)：要想(xiang)达到(dao)理(li)(li)想(xiang)的(de)(de)(de)(de)筛(shai)(shai)(shai)(shai)(shai)分(fen)效(xiao)果，只有当(dang)颗(ke)(ke)粒(li)(li)(li)(li)(li)小(xiao)于(yu)(yu)筛(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)时，经过多(duo)次反复与筛(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)接(jie)触，才有透筛(shai)(shai)(shai)(shai)(shai)的(de)(de)(de)(de)机(ji)会(hui)。颗(ke)(ke)粒(li)(li)(li)(li)(li)透筛(shai)(shai)(shai)(shai)(shai)的(de)(de)(de)(de)概率(lv)(lv)主要取决于(yu)(yu)颗(ke)(ke)粒(li)(li)(li)(li)(li)横(heng)截(jie)面(mian)在(zai)(zai)筛(shai)(shai)(shai)(shai)(shai)机(ji)平面(mian)上(shang)的(de)(de)(de)(de)投影与筛(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)面(mian)积(ji)之(zhi)(zhi)比(bi)。粒(li)(li)(li)(li)(li)度小(xiao)于(yu)(yu)筛(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)尺寸的(de)(de)(de)(de)3/4的(de)(de)(de)(de)颗(ke)(ke)粒(li)(li)(li)(li)(li)称为(wei)“易(yi)筛(shai)(shai)(shai)(shai)(shai)粒(li)(li)(li)(li)(li)”，粒(li)(li)(li)(li)(li)度大(da)于(yu)(yu)筛(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)尺寸3/4的(de)(de)(de)(de)颗(ke)(ke)粒(li)(li)(li)(li)(li)称为(wei)“难筛(shai)(shai)(shai)(shai)(shai)粒(li)(li)(li)(li)(li)”。颗(ke)(ke)粒(li)(li)(li)(li)(li)的(de)(de)(de)(de)直(zhi)径(jing)越(yue)接(jie)近筛(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)尺寸，其透筛(shai)(shai)(shai)(shai)(shai)的(de)(de)(de)(de)困难就(jiu)越(yue)大(da)。直(zhi)径(jing)大(da)于(yu)(yu)1.5倍的(de)(de)(de)(de)粗粒(li)(li)(li)(li)(li)在(zai)(zai)筛(shai)(shai)(shai)(shai)(shai)面(mian)上(shang)形成的(de)(de)(de)(de)物(wu)理(li)(li)层，对易(yi)筛(shai)(shai)(shai)(shai)(shai)粒(li)(li)(li)(li)(li)和(he)(he)难筛(shai)(shai)(shai)(shai)(shai)粒(li)(li)(li)(li)(li)自上(shang)而下(xia)向(xiang)(xiang)筛(shai)(shai)(shai)(shai)(shai)面(mian)转移(yi)的(de)(de)(de)(de)影响并不大(da)。直(zhi)径(jing)大(da)于(yu)(yu)筛(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)但又小(xiao)于(yu)(yu)筛(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)尺寸1.5倍的(de)(de)(de)(de)粗粒(li)(li)(li)(li)(li)，在(zai)(zai)筛(shai)(shai)(shai)(shai)(shai)分(fen)过程中，遮盖筛(shai)(shai)(shai)(shai)(shai)面(mian)，堵塞筛(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)，阻(zu)(zu)碍颗(ke)(ke)粒(li)(li)(li)(li)(li)向(xiang)(xiang)筛(shai)(shai)(shai)(shai)(shai)面(mian)移(yi)动，称之(zhi)(zhi)为(wei)“阻(zu)(zu)碍粒(li)(li)(li)(li)(li)”。原料中难筛(shai)(shai)(shai)(shai)(shai)粒(li)(li)(li)(li)(li)和(he)(he)阻(zu)(zu)碍粒(li)(li)(li)(li)(li)含量越(yue)高，筛(shai)(shai)(shai)(shai)(shai)分(fen)效(xiao)率(lv)(lv)就(jiu)越(yue)低。
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