定容下料器是用于電解鋁生產中電解槽補充鋁氧化粉和電解質的專用設備，具有性能良好、易操作、方便維護、可靠、價格低，質量優等特點。
定(ding)容下(xia)料(liao)(liao)器的結(jie)構(gou)由氣缸、料(liao)(liao)筒、連接(jie)(jie)(jie)板，上、下(xia)連接(jie)(jie)(jie)桿，中(zhong)間連接(jie)(jie)(jie)桿，上、下(xia)椎體(ti)，十字連接(jie)(jie)(jie)軸，實心(xin)連接(jie)(jie)(jie)桿，空心(xin)桿等組成。
汽(qi)(qi)缸(gang)是(shi)定(ding)容下(xia)料(liao)器的(de)動力(li)，通過汽(qi)(qi)缸(gang)的(de)上(shang)下(xia)動作實(shi)現整個加料(liao)過程；料(liao)筒(tong)的(de)主要作用(yong)就是(shi)儲存(cun)定(ding)量的(de)鋁氧化粉和(he)電(dian)解質。
將(jiang)定(ding)(ding)容下(xia)(xia)料(liao)(liao)器(qi)安裝到位，當(dang)電(dian)解(jie)鋁(lv)(lv)(lv)生產(chan)過程中電(dian)解(jie)槽需(xu)要(yao)補(bu)充鋁(lv)(lv)(lv)氧(yang)化粉和(he)(he)電(dian)解(jie)質(zhi)(zhi)時(shi)，汽缸向(xiang)下(xia)(xia)動(dong)(dong)(dong)(dong)作(zuo)，帶(dai)動(dong)(dong)(dong)(dong)連(lian)(lian)桿和(he)(he)連(lian)(lian)桿上(shang)的(de)椎(zhui)體一(yi)(yi)起動(dong)(dong)(dong)(dong)作(zuo)；上(shang)椎(zhui)體向(xiang)下(xia)(xia)動(dong)(dong)(dong)(dong)作(zuo)將(jiang)料(liao)(liao)筒(tong)(tong)的(de)進(jin)料(liao)(liao)孔(kong)堵(du)嚴，下(xia)(xia)椎(zhui)體向(xiang)下(xia)(xia)動(dong)(dong)(dong)(dong)作(zuo)于是(shi)料(liao)(liao)筒(tong)(tong)的(de)出料(liao)(liao)孔(kong)打開(kai)，料(liao)(liao)筒(tong)(tong)內的(de)定(ding)(ding)容鋁(lv)(lv)(lv)氧(yang)化粉和(he)(he)電(dian)解(jie)質(zhi)(zhi)進(jin)入到電(dian)解(jie)槽內。下(xia)(xia)料(liao)(liao)一(yi)(yi)定(ding)(ding)時(shi)間后(hou)汽缸向(xiang)上(shang)動(dong)(dong)(dong)(dong)作(zuo)，連(lian)(lian)桿帶(dai)動(dong)(dong)(dong)(dong)椎(zhui)體向(xiang)上(shang)動(dong)(dong)(dong)(dong)作(zuo)，下(xia)(xia)椎(zhui)體將(jiang)料(liao)(liao)筒(tong)(tong)出料(liao)(liao)孔(kong)堵(du)嚴，上(shang)椎(zhui)體離開(kai)料(liao)(liao)筒(tong)(tong)進(jin)料(liao)(liao)孔(kong)，外部(bu)的(de)鋁(lv)(lv)(lv)氧(yang)化粉和(he)(he)電(dian)解(jie)質(zhi)(zhi)從進(jin)料(liao)(liao)孔(kong)進(jin)入料(liao)(liao)筒(tong)(tong)內，準(zhun)備(bei)下(xia)(xia)一(yi)(yi)次進(jin)料(liao)(liao)動(dong)(dong)(dong)(dong)作(zuo)。
定容下料器使用(yong)前一(yi)定要(yao)檢驗是(shi)否密(mi)封完好，裝配時一(yi)定要(yao)將(jiang)各密(mi)封處封好壓(ya)緊(jin)（密(mi)封材料可用(yong)石(shi)棉(mian)紡織密(mi)封圈或橡膠密(mi)封圈）。
定容(rong)下料器在安裝(zhuang)定位時一切動作要(yao)準確、平穩，以免撞(zhuang)到，影響整個裝(zhuang)置的同心度(du)；
為保(bao)證下(xia)料(liao)器的(de)有效(xiao)容(rong)積，使用(yong)后的(de)定容(rong)下(xia)料(liao)器要(yao)進(jin)行定期(qi)的(de)內部清(qing)(qing)理，清(qing)(qing)理時將下(xia)椎體拆卸下(xia)來除(chu)去附著物。
