瀏覽次數:
導致直線振動篩功率的要素
直(zhi)線(xian)振動篩(shai)進程技能經濟指標篩(shai)選(xuan)分級功(gong)率(lv)生產率(lv),前者(zhe)為質量(liang)指標,后(hou)者(zhe)為數目指標,它們之間有關(guan)系,此時還與其(qi)余諸(zhu)多(duo)要(yao)素(su)有關(guan),這些要(yao)素(su)決定直(zhi)線(xian)振動篩(shai)結(jie)果(guo),導致直(zhi)線(xian)振動篩(shai)功(gong)率(lv)要(yao)素(su)大體可以分三類:
1、篩網表面(mian)屬(shu)性為構造(zao)參(can)數導致
篩(shai)(shai)(shai)機(ji)使粒(li)子(zi)篩(shai)(shai)(shai)網(wang)表面(mian)作(zuo)垂直運動,因此(ci)篩(shai)(shai)(shai)選(xuan)分(fen)級(ji)(ji)功(gong)率(lv)高,加工能力(li)大(da)(da)(da),而粒(li)子(zi)與(yu)篩(shai)(shai)(shai)網(wang)表面(mian)相對運動平行(xing)運動棒條(tiao)篩(shai)(shai)(shai)、平面(mian)篩(shai)(shai)(shai)機(ji)、 震動設備網(wang):筒(tong)篩(shai)(shai)(shai)等,其(qi)篩(shai)(shai)(shai)選(xuan)分(fen)級(ji)(ji)功(gong)率(lv)加工能力(li)都(dou)低, 關于物料(liao)而言,篩(shai)(shai)(shai)子(zi)生(sheng)(sheng)(sheng)產(chan)率(lv)篩(shai)(shai)(shai)選(xuan)分(fen)級(ji)(ji)功(gong)率(lv)決(jue)定于篩(shai)(shai)(shai)眼尺(chi)度,生(sheng)(sheng)(sheng)產(chan)率(lv)來(lai)源于篩(shai)(shai)(shai)網(wang)表面(mian)直徑,篩(shai)(shai)(shai)網(wang)表面(mian)寬(kuan)生(sheng)(sheng)(sheng)產(chan)率(lv)高,篩(shai)(shai)(shai)選(xuan)分(fen)級(ji)(ji)功(gong)率(lv)來(lai)源于篩(shai)(shai)(shai)網(wang)表面(mian)長度,篩(shai)(shai)(shai)網(wang)表面(mian)長篩(shai)(shai)(shai)選(xuan)分(fen)級(ji)(ji)功(gong)率(lv)高,通常長寬(kuan)比為(wei)篩(shai)(shai)(shai)子(zi)面(mian)積(即篩(shai)(shai)(shai)眼面(mian)積與(yu)整(zheng)個篩(shai)(shai)(shai)網(wang)表面(mian)面(mian)積之比)愈(yu)大(da)(da)(da),則篩(shai)(shai)(shai)網(wang)表面(mian)單位面(mian)積生(sheng)(sheng)(sheng)產(chan)率(lv)篩(shai)(shai)(shai)選(xuan)分(fen)級(ji)(ji)功(gong)率(lv)愈(yu)高,篩(shai)(shai)(shai)眼尺(chi)度愈(yu)大(da)(da)(da),則單位篩(shai)(shai)(shai)網(wang)表面(mian)生(sheng)(sheng)(sheng)產(chan)率(lv)越大(da)(da)(da),篩(shai)(shai)(shai)選(xuan)分(fen)級(ji)(ji)功(gong)率(lv)越高。
2、被篩選分(fen)級物料物理(li)屬性
包括物料(liao)自身粒度組合、比(bi)重、濕(shi)(shi)(shi)度、篩(shai)(shai)目(mu)各(ge)占比(bi)粒子(zi)粒型等,當(dang)物料(liao)細粒含(han)(han)量較大(da)時,篩(shai)(shai)子(zi)生產率也(ye)大(da),當(dang)物料(liao)含(han)(han)濕(shi)(shi)(shi)量較大(da)時,通常(chang)說篩(shai)(shai)選(xuan)(xuan)(xuan)分(fen)級(ji)功率都會下(xia)降,但是(shi)篩(shai)(shai)眼尺度愈(yu)大(da),水分(fen)導致(zhi)愈(yu)小,因此關于含(han)(han)水分(fen)較大(da)濕(shi)(shi)(shi)物料(liao),為了(le)改進(jin)篩(shai)(shai)選(xuan)(xuan)(xuan)分(fen)級(ji)進(jin)程,通常(chang)可以選(xuan)(xuan)(xuan)用(yong)加大(da)篩(shai)(shai)眼方法,或(huo)(huo)許選(xuan)(xuan)(xuan)用(yong)濕(shi)(shi)(shi)式篩(shai)(shai)選(xuan)(xuan)(xuan)分(fen)級(ji),物料(liao)含(han)(han)泥(ni)量大(da)(當(dang)含(han)(han)泥(ni)量過8%時)應(ying)當(dang)選(xuan)(xuan)(xuan)用(yong)濕(shi)(shi)(shi)式篩(shai)(shai)選(xuan)(xuan)(xuan)分(fen)級(ji),或(huo)(huo)預先洗礦。
3、生產條件導致
當篩(shai)(shai)(shai)(shai)(shai)子(zi)負荷(he)較大時(shi)(shi),篩(shai)(shai)(shai)(shai)(shai)選分(fen)級(ji)功率(lv)低(di),大水準上篩(shai)(shai)(shai)(shai)(shai)子(zi)平率(lv)來源于篩(shai)(shai)(shai)(shai)(shai)眼(yan)巨(ju)細總篩(shai)(shai)(shai)(shai)(shai)選分(fen)級(ji)功率(lv);篩(shai)(shai)(shai)(shai)(shai)眼(yan)愈(yu)大,篩(shai)(shai)(shai)(shai)(shai)選分(fen)級(ji)功率(lv)愈(yu)低(di)時(shi)(shi),則生(sheng)產率(lv)愈(yu)高(gao),喂料勻稱性(xing)對篩(shai)(shai)(shai)(shai)(shai)選分(fen)級(ji)進程意義大,篩(shai)(shai)(shai)(shai)(shai)子(zi)傾斜度要(yao)適宜(yi)(yi),通常(chang)經歷試驗來認(ren)定,再就篩(shai)(shai)(shai)(shai)(shai)子(zi)振動(dong)幅度與(yu)振次(ci),這(zhe)(zhe)與(yu)篩(shai)(shai)(shai)(shai)(shai)子(zi)構(gou)造物性(xing)有關,范(fan)圍(wei)內,添加震(zhen)(zhen)動(dong)可以(yi)(yi)成長篩(shai)(shai)(shai)(shai)(shai)選分(fen)級(ji)指標,要(yao)想設備發揮的(de)(de)好,在工(gong)(gong)藝(yi)計(ji)劃中就需要(yao)選用好的(de)(de)原料,不管(guan)是大的(de)(de)鋼鐵材(cai)料還是小的(de)(de)螺絲(si),都要(yao)是便(bian)宜(yi)(yi)的(de)(de)零件(jian),這(zhe)(zhe)樣才干縮短設備在施(shi)工(gong)(gong)使用中不會產生(sheng)因粗制濫造而導(dao)致(zhi)的(de)(de)故障(zhang),礦山機械在運行(xing)時(shi)(shi)不免會有噪(zao)音,直線振動(dong)篩(shai)(shai)(shai)(shai)(shai)也不例外,為了(le)減小噪(zao)音污染,我(wo)們在計(ji)劃工(gong)(gong)藝(yi)中選用阻尼減振辦法(fa)以(yi)(yi)及(ji)復合繃簧,它(ta)可以(yi)(yi)減小篦條之間的(de)(de)構(gou)造因整機震(zhen)(zhen)動(dong)而發生(sheng)的(de)(de)噪(zao)音問題。
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