瀏覽次數:
芝(zhi)麻(ma)篩子多少目好?自(zi)動(dong)芝(zhi)麻(ma)篩選機
在榨芝(zhi)(zhi)麻(ma)(ma)油之前(qian),我們要對(dui)芝(zhi)(zhi)麻(ma)(ma)進行清(qing)選(xuan)(xuan),就是(shi)利用(yong)各(ge)種設備分(fen)離(li)油料中所含雜(za)(za)質(zhi)(zhi)的(de)(de)工序。芝(zhi)(zhi)麻(ma)(ma)在收獲、晾曬、運輸(shu)和(he)貯(zhu)藏過程中,不可避(bi)免地混(hun)入一些雜(za)(za)質(zhi)(zhi),如不清(qing)除,勢(shi)必(bi)影響機器的(de)(de)使(shi)用(yong)壽命和(he)油品的(de)(de)質(zhi)(zhi)量(liang),因此,壓榨前(qian)應該盡量(liang)將其(qi)除去。所以小編今天向大(da)家介紹一種清(qing)選(xuan)(xuan)的(de)(de)方式-篩(shai)選(xuan)(xuan)。篩(shai)選(xuan)(xuan)的(de)(de)原(yuan)理:主(zhu)要是(shi)利用(yong)芝(zhi)(zhi)麻(ma)(ma)和(he)雜(za)(za)質(zhi)(zhi)在顆粒(li)大(da)小上的(de)(de)差別,借助芝(zhi)(zhi)麻(ma)(ma)和(he)裝在篩(shai)選(xuan)(xuan)機械上篩(shai)面(mian)(mian)的(de)(de)相(xiang)對(dui)運動,并通(tong)過篩(shai)面(mian)(mian)的(de)(de)篩(shai)孔來(lai)將大(da)于(yu)或小于(yu)芝(zhi)(zhi)麻(ma)(ma)的(de)(de)雜(za)(za)質(zhi)(zhi)清(qing)選(xuan)(xuan)除去。芝(zhi)(zhi)麻(ma)(ma)的(de)(de)篩(shai)選(xuan)(xuan)機械多(duo)用(yong)振動篩(shai)設備。
振(zhen)動(dong)(dong)篩(shai)(shai)(shai)又稱平篩(shai)(shai)(shai),是(shi)應用廣泛的(de)一(yi)種篩(shai)(shai)(shai)選機(ji)(ji)械(xie),是(shi)機(ji)(ji)械(xie)化(hua)油廠中不可缺少的(de)清理(li)設備(bei)。芝(zhi)麻(ma)和篩(shai)(shai)(shai)面之間的(de)相對運(yun)動(dong)(dong)是(shi)靠動(dong)(dong)力帶動(dong)(dong)篩(shai)(shai)(shai)框作往復(fu)運(yun)動(dong)(dong)產生的(de)。因此振(zhen)動(dong)(dong)篩(shai)(shai)(shai)篩(shai)(shai)(shai)面的(de)傾斜度比(bi)固(gu)定篩(shai)(shai)(shai)小,一(yi)般(ban)在(zai)10-20°。振(zhen)動(dong)(dong)篩(shai)(shai)(shai)主要機(ji)(ji)件是(shi)一(yi)個(ge)偏心(xin)傳動(dong)(dong)機(ji)(ji)構和四根彈性支桿支承(或由四根富有彈性的(de)鋼板或竹板懸(xuan)掛于機(ji)(ji)架上),工作時便不斷地作往復(fu)運(yun)動(dong)(dong)。
在篩(shai)(shai)(shai)(shai)框上(shang)(shang)裝有一層(ceng)(ceng)(ceng)或(huo)兩層(ceng)(ceng)(ceng)篩(shai)(shai)(shai)(shai)面(mian)(mian)(有時在篩(shai)(shai)(shai)(shai)框和(he)進(jin)料斗之間,還(huan)向后(hou)斜裝一層(ceng)(ceng)(ceng)篩(shai)(shai)(shai)(shai)孔較大的(de)短(duan)的(de)篩(shai)(shai)(shai)(shai)面(mian)(mian),用于先(xian)除去石(shi)塊等大型雜質(zhi))。兩層(ceng)(ceng)(ceng)篩(shai)(shai)(shai)(shai)面(mian)(mian)時,上(shang)(shang)層(ceng)(ceng)(ceng)篩(shai)(shai)(shai)(shai)孔大于芝(zhi)(zhi)麻(ma),下(xia)(xia)層(ceng)(ceng)(ceng)篩(shai)(shai)(shai)(shai)孔小于芝(zhi)(zhi)麻(ma)。當芝(zhi)(zhi)麻(ma)和(he)雜質(zhi)一道從進(jin)料斗進(jin)入(ru)上(shang)(shang)層(ceng)(ceng)(ceng)篩(shai)(shai)(shai)(shai)面(mian)(mian)后(hou),芝(zhi)(zhi)麻(ma)穿過篩(shai)(shai)(shai)(shai)孔落至下(xia)(xia)層(ceng)(ceng)(ceng)篩(shai)(shai)(shai)(shai)面(mian)(mian)上(shang)(shang),而大的(de)雜質(zhi)則(ze)留于其上(shang)(shang),沿篩(shai)(shai)(shai)(shai)面(mian)(mian)向下(xia)(xia)流至出(chu)口排出(chu)。在下(xia)(xia)層(ceng)(ceng)(ceng)篩(shai)(shai)(shai)(shai)面(mian)(mian)上(shang)(shang)恰好相(xiang)反,芝(zhi)(zhi)麻(ma)被留于篩(shai)(shai)(shai)(shai)面(mian)(mian)上(shang)(shang),然后(hou)流向出(chu)料口,而細小的(de)雜質(zhi)則(ze)穿過篩(shai)(shai)(shai)(shai)孔落于篩(shai)(shai)(shai)(shai)框底板(ban)上(shang)(shang),再(zai)集(ji)中送(song)至機外。振動(dong)篩(shai)(shai)(shai)(shai)偏心(xin)軸的(de)轉(zhuan)速(su)一般(ban)在200 -300轉(zhuan)/分(fen)鐘(zhong)左右,篩(shai)(shai)(shai)(shai)框振幅以不超過24毫米為宜。
在油脂工廠中也有(you)使用帶(dai)有(you)吸(xi)(xi)風(feng)機(ji)的(de)振(zhen)動(dong)(dong)篩(shai),結構同(tong)前一(yi)種(zhong)的(de)主要區別在于:它(ta)本身帶(dai)有(you)一(yi)部(bu)吸(xi)(xi)風(feng)機(ji),在芝麻進(jin)出口(kou)處各有(you)一(yi)垂直的(de)吸(xi)(xi)風(feng)管道,使空氣穿過下落的(de)芝麻,將輕雜(za)質及(ji)灰塵帶(dai)到降(jiang)塵室(shi)(shi),一(yi)部(bu)分雜(za)質便在降(jiang)塵室(shi)(shi)內降(jiang)落,細的(de)灰塵則隨空氣經(jing)吸(xi)(xi)風(feng)機(ji)進(jin)入附(fu)設的(de)旋(xuan)風(feng)分離器中分離。這種(zhong)振(zhen)動(dong)(dong)篩(shai)在篩(shai)框(kuang)下還裝有(you)能自(zi)動(dong)(dong)清(qing)理篩(shai)面的(de)刷(shua)帚。此外,我(wo)認為回轉(zhuan)篩(shai)也是(shi)一(yi)種(zhong)效率較(jiao)高的(de)清(qing)選(xuan)設備,它(ta)的(de)篩(shai)面是(shi)作(zuo)圓周周運動(dong)(dong)的(de),具有(you)密封性好、耗電少產(chan)量(liang)高、振(zhen)動(dong)(dong)小、噪音低等優點。
Copyright(C)