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選購***振動(dong)的注意事項
發布：12&dNaJsmW1瀏覽：1078次
篩(shai)(shai)分(fen)過程的(de)技(ji)術經濟指(zhi)標是篩(shai)(shai)分(fen)效率(lv)和生產率(lv)。前(qian)者為質(zhi)量指(zhi)標，后者為數量指(zhi)標。它們之間有一定(ding)(ding)的(de)關(guan)系，同時還與其(qi)他許多因(yin)素(su)有關(guan)，這(zhe)些因(yin)素(su)決定(ding)(ding)篩(shai)(shai)分(fen)的(de)結果(guo)。
在購買振動篩(shai)(shai)之前我們***先要知(zhi)道什么會影響篩(shai)(shai)分(fen)過程(cheng)(cheng)？影響篩(shai)(shai)分(fen)過程(cheng)(cheng)的因素大體可以分(fen)三類：
一、被篩(shai)(shai)(shai)分(fen)(fen)物(wu)(wu)料(liao)的(de)(de)物(wu)(wu)理(li)性(xing)質：包括物(wu)(wu)料(liao)本身的(de)(de)粒度(du)(du)(du)組成、濕(shi)度(du)(du)(du)、含泥(ni)量(liang)和(he)粒子的(de)(de)形(xing)狀等。當(dang)物(wu)(wu)料(liao)細粒含量(liang)較大(da)時，篩(shai)(shai)(shai)分(fen)(fen)機的(de)(de)生產(chan)率(lv)也大(da)。當(dang)物(wu)(wu)料(liao)的(de)(de)濕(shi)度(du)(du)(du)較大(da)時，一般來說篩(shai)(shai)(shai)分(fen)(fen)效率(lv)都會降低(di)。但篩(shai)(shai)(shai)孔尺寸愈大(da)，水(shui)(shui)分(fen)(fen)影響(xiang)愈小，所以(yi)對于含水(shui)(shui)分(fen)(fen)較大(da)的(de)(de)濕(shi)物(wu)(wu)料(liao)，為了改善篩(shai)(shai)(shai)分(fen)(fen)過(guo)程，一般可以(yi)采(cai)用(yong)加大(da)篩(shai)(shai)(shai)孔的(de)(de)辦法(fa)，或(huo)者采(cai)用(yong)濕(shi)式(shi)篩(shai)(shai)(shai)分(fen)(fen)。物(wu)(wu)料(liao)含泥(ni)量(liang)大(da)（當(dang)含泥(ni)量(liang)大(da)于8%時）應(ying)當(dang)采(cai)用(yong)濕(shi)式(shi)篩(shai)(shai)(shai)分(fen)(fen)，或(huo)預(yu)先洗礦。
二、篩面(mian)性質及其結構參數的影響(xiang)：
振動(dong)篩(shai)(shai)(shai)(shai)(shai)是使粒子和(he)篩(shai)(shai)(shai)(shai)(shai)面(mian)(mian)作垂直運動(dong)，所以篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)效(xiao)(xiao)(xiao)(xiao)率(lv)(lv)高(gao)(gao)，生(sheng)(sheng)(sheng)產(chan)(chan)(chan)能(neng)(neng)力(li)大(da)(da)(da)。而粒子與(yu)篩(shai)(shai)(shai)(shai)(shai)面(mian)(mian)相對運動(dong)主要是平(ping)行運動(dong)的(de)棒條篩(shai)(shai)(shai)(shai)(shai)、平(ping)面(mian)(mian)振動(dong)篩(shai)(shai)(shai)(shai)(shai)、筒篩(shai)(shai)(shai)(shai)(shai)等，其篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)效(xiao)(xiao)(xiao)(xiao)率(lv)(lv)和(he)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)能(neng)(neng)力(li)都低。對于一(yi)定的(de)物(wu)料(liao)而言，篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)機的(de)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)率(lv)(lv)和(he)篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)效(xiao)(xiao)(xiao)(xiao)率(lv)(lv)決(jue)(jue)定于篩(shai)(shai)(shai)(shai)(shai)孔尺(chi)寸。生(sheng)(sheng)(sheng)產(chan)(chan)(chan)率(lv)(lv)取決(jue)(jue)于篩(shai)(shai)(shai)(shai)(shai)面(mian)(mian)寬(kuan)度，篩(shai)(shai)(shai)(shai)(shai)面(mian)(mian)寬(kuan)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)率(lv)(lv)高(gao)(gao)。篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)效(xiao)(xiao)(xiao)(xiao)率(lv)(lv)取決(jue)(jue)于篩(shai)(shai)(shai)(shai)(shai)面(mian)(mian)長(chang)度，篩(shai)(shai)(shai)(shai)(shai)面(mian)(mian)長(chang)篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)效(xiao)(xiao)(xiao)(xiao)率(lv)(lv)高(gao)(gao)。一(yi)般長(chang)寬(kuan)比為2。有效(xiao)(xiao)(xiao)(xiao)的(de)篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)面(mian)(mian)積(ji)（即篩(shai)(shai)(shai)(shai)(shai)孔面(mian)(mian)積(ji)與(yu)整個篩(shai)(shai)(shai)(shai)(shai)面(mian)(mian)面(mian)(mian)積(ji)之比）愈大(da)(da)(da)，則篩(shai)(shai)(shai)(shai)(shai)面(mian)(mian)的(de)單位(wei)(wei)面(mian)(mian)積(ji)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)率(lv)(lv)和(he)篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)效(xiao)(xiao)(xiao)(xiao)率(lv)(lv)愈高(gao)(gao)。篩(shai)(shai)(shai)(shai)(shai)孔尺(chi)寸愈大(da)(da)(da)，則單位(wei)(wei)篩(shai)(shai)(shai)(shai)(shai)面(mian)(mian)的(de)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)率(lv)(lv)越大(da)(da)(da)，篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)效(xiao)(xiao)(xiao)(xiao)率(lv)(lv)越高(gao)(gao)。
三、生(sheng)產條件的(de)影(ying)響(xiang):當篩(shai)分(fen)(fen)(fen)機的(de)負荷(he)較(jiao)大(da)(da)(da)時(shi)，篩(shai)分(fen)(fen)(fen)效(xiao)(xiao)率(lv)(lv)低(di)。在很(hen)大(da)(da)(da)程度上篩(shai)子的(de)和平(ping)率(lv)(lv)取決于篩(shai)孔大(da)(da)(da)小和總(zong)篩(shai)分(fen)(fen)(fen)效(xiao)(xiao)率(lv)(lv)；篩(shai)孔愈大(da)(da)(da)，要(yao)求(qiu)篩(shai)分(fen)(fen)(fen)效(xiao)(xiao)率(lv)(lv)愈低(di)時(shi)，則(ze)生(sheng)產率(lv)(lv)愈高。給料均勻性對篩(shai)分(fen)(fen)(fen)過程意義很(hen)大(da)(da)(da)。篩(shai)分(fen)(fen)(fen)機的(de)傾角要(yao)適宜，一般(ban)通(tong)過試驗來確定。再就是振動(dong)篩(shai)的(de)振幅(fu)與振次，這與振動(dong)篩(shai)的(de)結構物性有(you)關，在一定的(de)范圍內，增(zeng)加振動(dong)可以(yi)提高篩(shai)分(fen)(fen)(fen)指(zhi)標。我們在購買振動(dong)篩(shai)或(huo)者篩(shai)分(fen)(fen)(fen)機的(de)時(shi)候，以(yi)上三點應該著重考慮(lv)，只(zhi)有(you)考慮(lv)好了(le)以(yi)上影(ying)響(xiang)篩(shai)分(fen)(fen)(fen)的(de)重要(yao)因素，我們才能買到滿(man)足我們生(sheng)產效(xiao)(xiao)率(lv)(lv)的(de)*經濟的(de)篩(shai)分(fen)(fen)(fen)機。