瀏覽次數：
振動篩的運作過程以及組(zu)成結構(gou)
振(zhen)動(dong)篩的運(yun)作過程以及(ji)組成結構
振(zhen)動篩工作原理(li)
振動(dong)篩(shai)(shai)(shai)(shai)(shai)(shai)將顆(ke)粒(li)(li)(li)(li)(li)大(da)小(xiao)不(bu)(bu)(bu)同的(de)碎(sui)散物(wu)料群(qun),多(duo)次通過(guo)(guo)(guo)(guo)(guo)均勻布孔(kong)的(de)單層(ceng)(ceng)或多(duo)層(ceng)(ceng)篩(shai)(shai)(shai)(shai)(shai)(shai)面(mian)(mian)(mian),分(fen)(fen)(fen)成(cheng)若干不(bu)(bu)(bu)同級(ji)別的(de)過(guo)(guo)(guo)(guo)(guo)程成(cheng)為(wei)篩(shai)(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)。大(da)于(yu)篩(shai)(shai)(shai)(shai)(shai)(shai)孔(kong)的(de)顆(ke)粒(li)(li)(li)(li)(li)留(liu)在篩(shai)(shai)(shai)(shai)(shai)(shai)面(mian)(mian)(mian)上,稱為(wei)該篩(shai)(shai)(shai)(shai)(shai)(shai)面(mian)(mian)(mian)的(de)篩(shai)(shai)(shai)(shai)(shai)(shai)上物(wu),小(xiao)于(yu)篩(shai)(shai)(shai)(shai)(shai)(shai)孔(kong)的(de)顆(ke)粒(li)(li)(li)(li)(li)透(tou)過(guo)(guo)(guo)(guo)(guo)篩(shai)(shai)(shai)(shai)(shai)(shai)孔(kong),稱為(wei)該篩(shai)(shai)(shai)(shai)(shai)(shai)面(mian)(mian)(mian)的(de)篩(shai)(shai)(shai)(shai)(shai)(shai)下(xia)物(wu)。實際(ji)的(de)篩(shai)(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)過(guo)(guo)(guo)(guo)(guo)程是：大(da)量粒(li)(li)(li)(li)(li)度大(da)小(xiao)不(bu)(bu)(bu)同、粗細混雜(za)的(de)碎(sui)散物(wu)料進(jin)入(ru)篩(shai)(shai)(shai)(shai)(shai)(shai)面(mian)(mian)(mian)后,只有一部(bu)分(fen)(fen)(fen)顆(ke)粒(li)(li)(li)(li)(li)與篩(shai)(shai)(shai)(shai)(shai)(shai)面(mian)(mian)(mian)接觸,由(you)于(yu)篩(shai)(shai)(shai)(shai)(shai)(shai)箱(xiang)的(de)振動(dong),篩(shai)(shai)(shai)(shai)(shai)(shai)上物(wu)料層(ceng)(ceng)被(bei)松散,使大(da)顆(ke)粒(li)(li)(li)(li)(li)本來就存在的(de)間隙(xi)(xi)被(bei)進(jin)一步擴(kuo)大(da),小(xiao)顆(ke)粒(li)(li)(li)(li)(li)乘機穿(chuan)過(guo)(guo)(guo)(guo)(guo)間隙(xi)(xi),轉(zhuan)移到下(xia)層(ceng)(ceng)或運輸機上。由(you)于(yu)小(xiao)顆(ke)粒(li)(li)(li)(li)(li)間隙(xi)(xi)小(xiao),大(da)顆(ke)粒(li)(li)(li)(li)(li)并不(bu)(bu)(bu)能(neng)穿(chuan)過(guo)(guo)(guo)(guo)(guo)，于(yu)是原來雜(za)亂無章(zhang)排列的(de)顆(ke)粒(li)(li)(li)(li)(li)群(qun)發生了分(fen)(fen)(fen)離(li),即(ji)按顆(ke)粒(li)(li)(li)(li)(li)大(da)小(xiao)進(jin)行了分(fen)(fen)(fen)層(ceng)(ceng),形成(cheng)了小(xiao)顆(ke)粒(li)(li)(li)(li)(li)在下(xia),粗顆(ke)粒(li)(li)(li)(li)(li)居上的(de)排列規則。到達(da)篩(shai)(shai)(shai)(shai)(shai)(shai)面(mian)(mian)(mian)的(de)細顆(ke)粒(li)(li)(li)(li)(li),小(xiao)于(yu)篩(shai)(shai)(shai)(shai)(shai)(shai)孔(kong)者透(tou)篩(shai)(shai)(shai)(shai)(shai)(shai),終(zhong)實現了粗、細粒(li)(li)(li)(li)(li)分(fen)(fen)(fen)離(li),完(wan)成(cheng)篩(shai)(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)過(guo)(guo)(guo)(guo)(guo)程。然(ran)(ran)而，充分(fen)(fen)(fen)的(de)分(fen)(fen)(fen)離(li)是沒有的(de)，振動(dong)篩(shai)(shai)(shai)(shai)(shai)(shai)在篩(shai)(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)時(shi)，一般都有一部(bu)分(fen)(fen)(fen)篩(shai)(shai)(shai)(shai)(shai)(shai)下(xia)物(wu)留(liu)在篩(shai)(shai)(shai)(shai)(shai)(shai)上物(wu)中。細粒(li)(li)(li)(li)(li)透(tou)篩(shai)(shai)(shai)(shai)(shai)(shai)時(shi)，雖然(ran)(ran)顆(ke)粒(li)(li)(li)(li)(li)都小(xiao)于(yu)篩(shai)(shai)(shai)(shai)(shai)(shai)孔(kong)，但它們透(tou)篩(shai)(shai)(shai)(shai)(shai)(shai)的(de)難易程度不(bu)(bu)(bu)同，物(wu)料和篩(shai)(shai)(shai)(shai)(shai)(shai)孔(kong)尺寸相近的(de)顆(ke)粒(li)(li)(li)(li)(li)，透(tou)篩(shai)(shai)(shai)(shai)(shai)(shai)就較難，透(tou)過(guo)(guo)(guo)(guo)(guo)篩(shai)(shai)(shai)(shai)(shai)(shai)面(mian)(mian)(mian)下(xia)層(ceng)(ceng)的(de)顆(ke)粒(li)(li)(li)(li)(li)間隙(xi)(xi)就更難。
振動篩機械結構
振動篩一(yi)般由振動器、篩箱、支承或懸掛裝置、傳動裝置等部分組成。
振動(dong)器(qi)
  單軸振動(dong)篩(shai)和雙軸振動(dong)篩(shai)的振動(dong)器，按偏心重配置(zhi)方(fang)式區分一(yi)般有兩種
型(xing)式。偏(pian)心(xin)重(zhong)的配置方式以塊偏(pian)心(xin)型(xing)式較好。
篩箱(xiang)
篩(shai)箱由篩(shai)框、篩(shai)面及(ji)其壓(ya)緊裝置組成。篩(shai)框是由側板和(he)橫梁(liang)構成。篩(shai)框要有(you)足(zu)夠的剛性(xing)。
支承裝置(zhi)
振(zhen)(zhen)動篩的支承裝置(zhi)有(you)吊式(shi)和座(zuo)式(shi)兩種。座(zuo)式(shi)安裝較為簡單，且安裝高度低(di)，一(yi)般應優先選(xuan)用。振(zhen)(zhen)動篩的支承裝置(zhi)主(zhu)要(yao)由彈(dan)(dan)性元件組成，常用的有(you)螺(luo)旋彈(dan)(dan)簧、板彈(dan)(dan)簧和橡膠彈(dan)(dan)簧。
傳(chuan)動(dong)裝置
振(zhen)動(dong)(dong)篩通常(chang)采(cai)用三角帶傳動(dong)(dong)裝置(zhi)，振(zhen)動(dong)(dong)篩的(de)(de)結構簡單(dan)，可(ke)以任意選擇振(zhen)動(dong)(dong)器(qi)(qi)(qi)的(de)(de)轉數，但(dan)運(yun)轉時皮帶容易打滑，可(ke)能導致篩孔堵塞(sai)。振(zhen)動(dong)(dong)篩也有采(cai)用聯軸器(qi)(qi)(qi)直接驅動(dong)(dong)的(de)(de)。聯軸器(qi)(qi)(qi)可(ke)以保持(chi)振(zhen)動(dong)(dong)器(qi)(qi)(qi)的(de)(de)穩定(ding)轉數，而且使用壽命很長，但(dan)振(zhen)動(dong)(dong)器(qi)(qi)(qi)的(de)(de)轉數調(diao)整困難(nan)。
Copyright(C)
