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選(xuan)購(gou)***振動(dong)的注(zhu)意事項
發布：12&dNaJsmW1瀏覽：1078次
篩(shai)分過程的(de)技(ji)術經濟指標(biao)(biao)是篩(shai)分效率(lv)和(he)生(sheng)產率(lv)。前者為質量指標(biao)(biao)，后者為數(shu)量指標(biao)(biao)。它(ta)們(men)之(zhi)間有(you)一定的(de)關系，同(tong)時還與其(qi)他許多因(yin)素有(you)關，這(zhe)些因(yin)素決(jue)定篩(shai)分的(de)結(jie)果。
在購(gou)買振(zhen)動(dong)篩(shai)之前(qian)我們***先要知(zhi)道什(shen)么會影(ying)響(xiang)篩(shai)分過程？影(ying)響(xiang)篩(shai)分過程的因素(su)大體可以分三類(lei)：
一(yi)、被篩(shai)(shai)(shai)(shai)分(fen)物(wu)料的(de)物(wu)理性(xing)質：包括(kuo)物(wu)料本(ben)身的(de)粒(li)(li)度組成(cheng)、濕(shi)度、含(han)泥量(liang)和粒(li)(li)子的(de)形(xing)狀等(deng)。當(dang)物(wu)料細粒(li)(li)含(han)量(liang)較大(da)時(shi)，篩(shai)(shai)(shai)(shai)分(fen)機(ji)的(de)生產率也大(da)。當(dang)物(wu)料的(de)濕(shi)度較大(da)時(shi)，一(yi)般來說篩(shai)(shai)(shai)(shai)分(fen)效率都會降低(di)。但篩(shai)(shai)(shai)(shai)孔尺(chi)寸愈大(da)，水(shui)分(fen)影響愈小，所以對于含(han)水(shui)分(fen)較大(da)的(de)濕(shi)物(wu)料，為了(le)改善篩(shai)(shai)(shai)(shai)分(fen)過(guo)程，一(yi)般可(ke)以采(cai)用(yong)加(jia)大(da)篩(shai)(shai)(shai)(shai)孔的(de)辦法，或者采(cai)用(yong)濕(shi)式篩(shai)(shai)(shai)(shai)分(fen)。物(wu)料含(han)泥量(liang)大(da)（當(dang)含(han)泥量(liang)大(da)于8%時(shi)）應當(dang)采(cai)用(yong)濕(shi)式篩(shai)(shai)(shai)(shai)分(fen)，或預先(xian)洗礦(kuang)。
二、篩面性質及(ji)其結構參數的影響(xiang)：
振動(dong)篩(shai)(shai)(shai)(shai)(shai)是(shi)使粒子和(he)篩(shai)(shai)(shai)(shai)(shai)面(mian)作垂直運(yun)動(dong)，所以篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)效(xiao)(xiao)(xiao)率(lv)(lv)(lv)高(gao)，生(sheng)(sheng)(sheng)產(chan)(chan)能力大。而粒子與(yu)(yu)篩(shai)(shai)(shai)(shai)(shai)面(mian)相(xiang)對運(yun)動(dong)主要是(shi)平(ping)行運(yun)動(dong)的(de)(de)棒條篩(shai)(shai)(shai)(shai)(shai)、平(ping)面(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)效(xiao)(xiao)(xiao)率(lv)(lv)(lv)和(he)生(sheng)(sheng)(sheng)產(chan)(chan)能力都低。對于(yu)一定的(de)(de)物(wu)料而言(yan)，篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)機的(de)(de)生(sheng)(sheng)(sheng)產(chan)(chan)率(lv)(lv)(lv)和(he)篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)效(xiao)(xiao)(xiao)率(lv)(lv)(lv)決(jue)定于(yu)篩(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)尺寸。生(sheng)(sheng)(sheng)產(chan)(chan)率(lv)(lv)(lv)取(qu)決(jue)于(yu)篩(shai)(shai)(shai)(shai)(shai)面(mian)寬度，篩(shai)(shai)(shai)(shai)(shai)面(mian)寬生(sheng)(sheng)(sheng)產(chan)(chan)率(lv)(lv)(lv)高(gao)。篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)效(xiao)(xiao)(xiao)率(lv)(lv)(lv)取(qu)決(jue)于(yu)篩(shai)(shai)(shai)(shai)(shai)面(mian)長(chang)(chang)度，篩(shai)(shai)(shai)(shai)(shai)面(mian)長(chang)(chang)篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)效(xiao)(xiao)(xiao)率(lv)(lv)(lv)高(gao)。一般長(chang)(chang)寬比為2。有效(xiao)(xiao)(xiao)的(de)(de)篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)面(mian)積(ji)（即篩(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)面(mian)積(ji)與(yu)(yu)整(zheng)個篩(shai)(shai)(shai)(shai)(shai)面(mian)面(mian)積(ji)之比）愈(yu)大，則篩(shai)(shai)(shai)(shai)(shai)面(mian)的(de)(de)單(dan)位面(mian)積(ji)生(sheng)(sheng)(sheng)產(chan)(chan)率(lv)(lv)(lv)和(he)篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)效(xiao)(xiao)(xiao)率(lv)(lv)(lv)愈(yu)高(gao)。篩(shai)(shai)(shai)(shai)(shai)孔(kong)(kong)(kong)尺寸愈(yu)大，則單(dan)位篩(shai)(shai)(shai)(shai)(shai)面(mian)的(de)(de)生(sheng)(sheng)(sheng)產(chan)(chan)率(lv)(lv)(lv)越大，篩(shai)(shai)(shai)(shai)(shai)分(fen)(fen)效(xiao)(xiao)(xiao)率(lv)(lv)(lv)越高(gao)。
三、生產(chan)條件的(de)(de)(de)影(ying)響:當篩(shai)分(fen)(fen)機的(de)(de)(de)負荷較大(da)(da)時(shi)，篩(shai)分(fen)(fen)效(xiao)率(lv)(lv)低(di)。在(zai)很(hen)大(da)(da)程度上(shang)篩(shai)子的(de)(de)(de)和平率(lv)(lv)取決(jue)于篩(shai)孔(kong)(kong)大(da)(da)小(xiao)和總篩(shai)分(fen)(fen)效(xiao)率(lv)(lv)；篩(shai)孔(kong)(kong)愈大(da)(da)，要求(qiu)篩(shai)分(fen)(fen)效(xiao)率(lv)(lv)愈低(di)時(shi)，則生產(chan)率(lv)(lv)愈高。給料均勻性(xing)對(dui)篩(shai)分(fen)(fen)過程意義很(hen)大(da)(da)。篩(shai)分(fen)(fen)機的(de)(de)(de)傾角要適宜(yi)，一(yi)般通過試(shi)驗來(lai)確定(ding)。再(zai)就是(shi)振動(dong)篩(shai)的(de)(de)(de)振幅與(yu)振次，這與(yu)振動(dong)篩(shai)的(de)(de)(de)結構物性(xing)有關(guan)，在(zai)一(yi)定(ding)的(de)(de)(de)范圍內，增(zeng)加(jia)振動(dong)可(ke)以提高篩(shai)分(fen)(fen)指(zhi)標。我們在(zai)購買振動(dong)篩(shai)或者篩(shai)分(fen)(fen)機的(de)(de)(de)時(shi)候，以上(shang)三點應該著重(zhong)考慮，只(zhi)有考慮好了以上(shang)影(ying)響篩(shai)分(fen)(fen)的(de)(de)(de)重(zhong)要因素(su)，我們才能買到(dao)滿足我們生產(chan)效(xiao)率(lv)(lv)的(de)(de)(de)*經濟的(de)(de)(de)篩(shai)分(fen)(fen)機。