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       振(zhen)(zhen)(zhen)动(dong)筛是利用振(zhen)(zhen)(zhen)子(zi)激(ji)振(zhen)(zhen)(zhen)所产生(sheng)的往(wang)复(fu)旋(xuan)型(xing)振(zhen)(zhen)(zhen)动(dong)而工作的。振(zhen)(zhen)(zhen)子(zi)的上(shang)旋(xuan)转(zhuan)(zhuan)重(zhong)锤使筛面(mian)(mian)(mian)产生(sheng)平面(mian)(mian)(mian)回旋(xuan)振(zhen)(zhen)(zhen)动(dong)，而下旋(xuan)转(zhuan)(zhuan)重(zhong)锤则使筛面(mian)(mian)(mian)产生(sheng)锥面(mian)(mian)(mian)回转(zhuan)(zhuan)振(zhen)(zhen)(zhen)动(dong)，其(qi)联合作用的效(xiao)果(guo)则使筛面(mian)(mian)(mian)产生(sheng)复(fu)旋(xuan)型(xing)振(zhen)(zhen)(zhen)动(dong)。其(qi)振(zhen)(zhen)(zhen)动(dong)轨迹是一(yi)复(fu)杂的空间曲线(xian)。

　　其次，要了解振(zhen)动(dong)筛(shai)(shai)(shai)为不同(tong)的客(ke)户服务，从而达(da)到(dao)不同(tong)客(ke)户的要求，振(zhen)动(dong)筛(shai)(shai)(shai)根据不同(tong)的客(ke)户要求可以达(da)到(dao)筛(shai)(shai)(shai)分、过滤、整粒(li)、分级的作用(yong)。在振(zhen)动(dong)筛(shai)(shai)(shai)达(da)到(dao)不同(tong)筛(shai)(shai)(shai)分效果(guo)的情(qing)况(kuang)下，对振(zhen)动(dong)筛(shai)(shai)(shai)筛(shai)(shai)(shai)分产物的表(biao)示方(fang)法也是不一样的。

　　振动(dong)筛(shai)(shai)(shai)(shai)的(de)(de)(de)(de)重(zhong)要(yao)工作部分(fen)(fen)就是筛(shai)(shai)(shai)(shai)面(mian)，上(shang)(shang)面(mian)有一定(ding)形状和一定(ding)尺(chi)寸(cun)的(de)(de)(de)(de)筛(shai)(shai)(shai)(shai)孔(kong)。通常在(zai)一个筛(shai)(shai)(shai)(shai)面(mian)上(shang)(shang)可以(yi)得(de)到(dao)(dao)两种(zhong)产(chan)品，留在(zai)振动(dong)筛(shai)(shai)(shai)(shai)筛(shai)(shai)(shai)(shai)面(mian)上(shang)(shang)的(de)(de)(de)(de)物料(liao)称为筛(shai)(shai)(shai)(shai)上(shang)(shang)物，被筛(shai)(shai)(shai)(shai)下去的(de)(de)(de)(de)物料(liao)称为筛(shai)(shai)(shai)(shai)下物。在(zai)几(ji)个筛(shai)(shai)(shai)(shai)孔(kong)尺(chi)寸(cun)依次不(bu)同的(de)(de)(de)(de)筛(shai)(shai)(shai)(shai)面(mian)上(shang)(shang)进行筛(shai)(shai)(shai)(shai)分(fen)(fen)时(shi)，可得(de)到(dao)(dao)不(bu)同粒度级别的(de)(de)(de)(de)产(chan)物，从而达到(dao)(dao)不(bu)同客(ke)户所想要(yao)的(de)(de)(de)(de)结果