發布(bu)時間:2024/3/4 11:13:18 瀏覽:
馳張(zhang)(zhang)篩(shai)(shai)(shai)是一種常用(yong)于固液(ye)分離的(de)機(ji)械設備(bei),廣泛應用(yong)于礦山、化工(gong)、冶金等行業。它(ta)通過在篩(shai)(shai)(shai)網(wang)上施加(jia)拉(la)力(li)(li),使篩(shai)(shai)(shai)網(wang)表面形成一定(ding)的(de)張(zhang)(zhang)力(li)(li),從而(er)實現(xian)對固體顆粒的(de)篩(shai)(shai)(shai)分。馳張(zhang)(zhang)篩(shai)(shai)(shai)通過施加(jia)拉(la)力(li)(li),使得(de)篩(shai)(shai)(shai)網(wang)表面保持(chi)一定(ding)的(de)張(zhang)(zhang)力(li)(li),從而(er)實現(xian)固液(ye)分離的(de)目的(de)。它(ta)具(ju)有結構簡單、操作(zuo)方便、效率較高等優點,在工(gong)業生產中發揮著重要的(de)作(zuo)用(yong)。
弛張篩(shai)(shai)設備包括篩(shai)(shai)箱(xiang)、振動(dong)(dong)器、傳動(dong)(dong)系統、基礎部、彈簧部、篩(shai)(shai)網、電(dian)機和控制箱(xiang)等(deng)。它是(shi)一種直線振動(dong)(dong)篩(shai)(shai),具有(you)箱(xiang)式(shi)振動(dong)(dong)器和多(duo)段不同傾角(jiao)的(de)(de)篩(shai)(shai)面。適(shi)用(yong)于細粒(li)含量高的(de)(de)大、中粒(li)級物料的(de)(de)粒(li)度分級,結(jie)構簡(jian)單(dan),生產性能穩定,運行平穩,易于維(wei)修、維(wei)護,操作方便。
弛張(zhang)篩(shai)(shai)(shai)(shai)采用(yong)專有(you)技術設計,在直線振(zhen)動篩(shai)(shai)(shai)(shai)上注入(ru)(ru)多(duo)(duo)段(duan)篩(shai)(shai)(shai)(shai)面。入(ru)(ru)料端有(you)一(yi)(yi)較(jiao)大的(de)斜(xie)坡(po)(po)篩(shai)(shai)(shai)(shai)面,隨后(hou)以(yi)一(yi)(yi)定(ding)數目(mu)的(de)角度逐級(ji)(ji)下降,直到出粒(li)口為止。入(ru)(ru)料端的(de)斜(xie)坡(po)(po)篩(shai)(shai)(shai)(shai)面可使(shi)更多(duo)(duo)的(de)物料通(tong)過(guo)(guo)篩(shai)(shai)(shai)(shai)面時有(you)較(jiao)高的(de)篩(shai)(shai)(shai)(shai)分(fen)速度和較(jiao)薄的(de)物料分(fen)層。大塊物料較(jiao)快地穿過(guo)(guo)陡坡(po)(po),這種較(jiao)早地分(fen)層使(shi)細的(de)顆粒(li)更快的(de)靠近篩(shai)(shai)(shai)(shai)面,能相對不(bu)受阻礙(ai)地通(tong)過(guo)(guo)縫隙。因此,弛張(zhang)篩(shai)(shai)(shai)(shai)具有(you)高的(de)篩(shai)(shai)(shai)(shai)分(fen)效(xiao)率和高于傳統分(fen)級(ji)(ji)篩(shai)(shai)(shai)(shai)1.5-2倍處理量(liang)的(de)特(te)點。
弛張篩(shai)(shai)是20世紀80年(nian)代初(chu)發展起來的一種新型篩(shai)(shai)分機(ji)械,它是一種通過傾斜篩(shai)(shai)箱(xiang)上(shang)安裝的彈性篩(shai)(shai)面的弛、張運動拋(pao)擲物料的篩(shai)(shai)分機(ji)。其主要特點是篩(shai)(shai)分效率(lv)提高,處理量(liang)大,動負(fu)荷小,功耗少,噪聲低(di),因此(ci)應用(yong)較為廣泛。本文將對(dui)其結構(gou)和工作(zuo)原理作(zuo)詳細介紹。
弛張篩(shai)由兩(liang)個篩(shai)箱(xiang)組(zu)成(cheng),兩(liang)個篩(shai)箱(xiang)是獨(du)立的,由十字梁(liang)相(xiang)互連(lian)接。可變形的篩(shai)面(mian)安裝(zhuang)在(zai)十字梁(liang)上,篩(shai)框由兩(liang)側擋板(ban)組(zu)成(cheng),十字梁(liang)交叉相(xiang)聯。篩(shai)板(ban)含形成(cheng)彈跳(tiao)流的篩(shai)面(mian),安裝(zhuang)在(zai)十字梁(liang)上。兩(liang)個篩(shai)框由導向彈簧連(lian)接。
弛張(zhang)篩(shai)(shai)(shai)是(shi)雙質(zhi)量振動(dong)(dong)(dong)(dong)系統,采用聚氨酚橡膠篩(shai)(shai)(shai)面(mian),支承篩(shai)(shai)(shai)面(mian)的任意兩(liang)根(gen)(gen)相鄰(lin)橫梁(liang)都分別屬于兩(liang)個(ge)振動(dong)(dong)(dong)(dong)質(zhi)體,其(qi)中(zhong)一個(ge)質(zhi)體是(shi)篩(shai)(shai)(shai)箱(xiang),另一個(ge)質(zhi)體是(shi)配重(zhong)。在工作(zuo)(zuo)時,篩(shai)(shai)(shai)網交替地拉緊和松弛,使物料(liao)(liao)產(chan)生(sheng)前(qian)進彈跳運動(dong)(dong)(dong)(dong),可避免物料(liao)(liao)黏附篩(shai)(shai)(shai)網并堵塞篩(shai)(shai)(shai)孔(kong)。當兩(liang)質(zhi)體相差二相位(wei)振動(dong)(dong)(dong)(dong)時,任意兩(liang)根(gen)(gen)相鄰(lin)橫梁(liang)時而靠近,時而遠離(li),彈性篩(shai)(shai)(shai)面(mian)也相應時而松弛,時而張(zhang)緊,即篩(shai)(shai)(shai)面(mian)隨篩(shai)(shai)(shai)箱(xiang)作(zuo)(zuo)牽(qian)連運動(dong)(dong)(dong)(dong)的同時,還(huan)相對篩(shai)(shai)(shai)箱(xiang)作(zuo)(zuo)相對運動(dong)(dong)(dong)(dong)。這種弛張(zhang)運動(dong)(dong)(dong)(dong)不(bu)僅(jin)使篩(shai)(shai)(shai)孔(kong)不(bu)斷產(chan)生(sheng)變形(xing)(xing),而且大大增加(jia)了篩(shai)(shai)(shai)面(mian)的振動(dong)(dong)(dong)(dong)強(qiang)(qiang)度,從而有效(xiao)地克服了篩(shai)(shai)(shai)孔(kong)堵塞現象,顯著提高了篩(shai)(shai)(shai)機處(chu)理能力。但是(shi)因篩(shai)(shai)(shai)箱(xiang)的振動(dong)(dong)(dong)(dong)強(qiang)(qiang)度并不(bu)大,故機械強(qiang)(qiang)度容(rong)易(yi)保證,但篩(shai)(shai)(shai)面(mian)的振動(dong)(dong)(dong)(dong)強(qiang)(qiang)度較(jiao)大且反復變形(xing)(xing),故篩(shai)(shai)(shai)面(mian)壽命較(jiao)低。
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