顆粒機壓(ya)模(mo)的(de)製(zhi)造(zao)質(zhi)量(liang)固(gu)然(ran)重(zhong)要(yao),但(dan)是(shi)有(you)關(guan)的(de)操(cao)作(zuo)保(bao)證(zheng)也(ye)是(shi)必(bi)不(bu)可(ke)少(shao)的(de)。據(ju)了(le)解(jie),目(mu)前(qian)不(bu)少(shao)飼(si)料(liao)廠(chang)由(you)於(yu)操(cao)作(zuo)不(bu)當(dang),致(zhi)使(shi)顆(ke)粒(li)機(ji)壓(ya)模(mo)應(ying)有(you)的(de)生(sheng)產(chan)能(neng)力(li)得(de)不(bu)到(dao)正(zheng)常(chang)發(fa)揮(hui),特(te)別(bie)是(shi)使(shi)用(yong)新(xin)機(ji)新(xin)模(mo)和(he)遇(yu)到(dao)堵(du)模(mo),往(wang)往(wang)由(you)於(yu)使(shi)用(yong)和(he)處(chu)理(li)不(bu)當(dang),影(ying)響(xiang)整(zheng)機(ji)功(gong)能(neng)的(de)發(fa)揮(hui)。現(xian)根(gen)據(ju)筆(bi)者(zhe)工(gong)作(zuo)實(shi)踐(jian),對(dui)如(ru)何(he)使(shi)用(yong)新(xin)模(mo)和(he)排(pai)除(chu)堵(du)模(mo)進(jin)行(xing)分(fen)析(xi)探(tan)討(tao),供(gong)相(xiang)關(guan)人(ren)員(yuan)參(can)考(kao)。
1、新壓模安裝後的調整
1.1顆粒機安裝後的調整
以SZLH350顆粒機為例,主電機功率55kW。若使顆粒機過載保護起作用,可用手撥動後部安全銷座旁的行程開關,觀察主機運轉時是否能停止運行。操作時旋轉方向要正確(壓模順時針轉),喂料器和攪拌器不得逆向送料,喂料控製器能自如控製物料流量。
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1.2正確控製壓輥與壓模間隙
製粒過程中,壓模與壓輥的間隙極為重要,間隙過大,易造成物料在模輥間打滑,產量低,有時還會不出粒;間隙過小,模輥機械磨損嚴重,影響使用壽命。合適的模輥間隙應為0.05~0.3mm,即壓模與壓輥剛好接觸。最簡單的檢查方法是:間(jian)隙(xi)調(tiao)整(zheng)後(hou),人(ren)工(gong)轉(zhuan)動(dong)環(huan)模(mo),壓(ya)輥(gun)隨(sui)之(zhi)斷(duan)續(xu)轉(zhuan)動(dong),這(zhe)表(biao)明(ming)間(jian)隙(xi)合(he)適(shi)。擰(ning)緊(jin)各(ge)緊(jin)固(gu)件(jian),以(yi)免(mian)落(luo)下(xia)損(sun)壞(huai)機(ji)器(qi)。另(ling)外(wai),調(tiao)整(zheng)好(hao)喂(wei)料(liao)刮(gua)刀(dao),否(fou)則(ze)會(hui)使(shi)物(wu)料(liao)難(nan)以(yi)全(quan)部(bu)進(jin)入(ru)壓(ya)輥(gun)壓(ya)模(mo)之(zhi)間(jian),一(yi)部(bu)分(fen)物(wu)料(liao)從(cong)壓(ya)模(mo)罩(zhao)竄(cuan)出(chu),形(xing)成(cheng)的(de)顆(ke)粒(li)小(xiao),粉(fen)化(hua)率(lv)高(gao)。
2、新壓模使用調試步驟
製(zhi)粒(li)係(xi)統(tong)調(tiao)整(zheng)好(hao)後(hou),可(ke)以(yi)正(zheng)常(chang)開(kai)車(che)製(zhi)粒(li),但(dan)開(kai)車(che)時(shi)要(yao)打(da)開(kai)操(cao)作(zuo)門(men)上(shang)的(de)機(ji)外(wai)排(pai)料(liao)門(men),無(wu)機(ji)外(wai)排(pai)料(liao)門(men)時(shi)可(ke)以(yi)打(da)開(kai)操(cao)作(zuo)門(men)。先(xian)開(kai)動(dong)主(zhu)機(ji),正(zheng)常(chang)運(yun)轉(zhuan)後(hou)開(kai)動(dong)攪(jiao)拌(ban)機(ji);然後開喂料器,下料速度先慢,物料進攪拌器的同時打開蒸汽閘門,適用的飽和蒸汽壓力要求是0.2—0.4MPa,蒸汽溫度為130~150℃。一般物料製粒前水分是12%左右,加蒸汽後達15%~17%左右,溫度可達到65~85℃。水分過高,物料會在壓模表麵起“鍋巴”,結成塊狀,難以製成顆粒,並把模孔堵牢;水(shui)分(fen)過(guo)低(di),物(wu)料(liao)軟(ruan)化(hua)程(cheng)度(du)不(bu)夠(gou),使(shi)製(zhi)粒(li)阻(zu)力(li)增(zeng)加(jia),減(jian)低(di)生(sheng)產(chan)率(lv)。一(yi)般(ban)一(yi)批(pi)物(wu)料(liao)製(zhi)粒(li)前(qian)最(zui)好(hao)能(neng)夠(gou)快(kuai)速(su)化(hua)驗(yan)一(yi)下(xia)含(han)水(shui)量(liang),以(yi)便(bian)正(zheng)確(que)控(kong)製(zhi)蒸(zheng)汽(qi)用(yong)量(liang)。在(zai)實(shi)際(ji)操(cao)作(zuo)時(shi)蒸(zheng)汽(qi)用(yong)量(liang)的(de)控(kong)製(zhi)一(yi)般(ban)多(duo)是(shi)憑(ping)經(jing)驗(yan)和(he)手(shou)感(gan)。物(wu)料(liao)加(jia)蒸(zheng)汽(qi)後(hou)由(you)攪(jiao)拌(ban)器(qi)出(chu)來(lai)時(shi)先(xian)放(fang)掉(diao)一(yi)些(xie),然(ran)後(hou)用(yong)手(shou)抓(zhua)物(wu)料(liao)觀(guan)察(cha),物(wu)料(liao)輕(qing)輕(qing)一(yi)抓(zhua)能(neng)捏(nie)成(cheng)團(tuan),但(dan)手(shou)鬆(song)開(kai)碰(peng)一(yi)下(xia)料(liao)又(you)能(neng)散(san)開(kai)為(wei)好(hao)。
物wu料liao調tiao質zhi處chu理li後hou,可ke以yi進jin入ru製zhi粒li室shi,速su度du由you慢man到dao快kuai,物wu料liao流liu量liang逐zhu步bu增zeng加jia。物wu料liao進jin入ru製zhi粒li室shi後hou,首shou先xian觀guan察cha是shi否fou有you顆ke粒li出chu模mo,並bing注zhu意yi電dian流liu變bian化hua。如ru果guo顆ke粒li能neng正zheng常chang出chu模mo,電dian流liu波bo動dong幅fu度du不bu大da,沒mei有you達da到dao額e定ding電dian流liu,那na麼me可ke以yi加jia大da物wu料liao流liu量liang,並bing適shi當dang增zeng加jia蒸zheng汽qi量liang,直zhi至zhi達da到dao額e定ding電dian流liu為wei止zhi。假jia如ru物wu料liao能neng進jin入ru製zhi粒li室shi,但dan沒mei有you顆ke粒li出chu模mo,同tong時shi電dian流liu不bu斷duan升sheng高gao,這zhe時shi需xu要yao打da開kai機ji外wai排pai料liao門men,觀guan察cha不bu繼ji續xu進jin料liao時shi,電dian流liu是shi否fou下xia降jiang;ruguodianliuxiajiang,tongshiyoushaoshukelichumo,keyiguanbijiwaipailiaomen,jixujinxingzhili。jiarutingzhijinliaohoudianliurengbuxiajiang,shenzhijixushangsheng,jiuyingtingchejianzhayuanyin。xinmoshiyongtingjiqian,tingzhijinliaohou、關閉蒸汽喂料器和攪拌器,並把喂料控製器調至零。最後讓主機把原有物料從製粒室製完,然後用手把油性物料(如大米細糠)從操作門上部喂進去,把壓模內物料擠出來,讓油性物料充滿模孔,繼續運轉1~2min後,讓主機停車,並清除製粒室殘留餘料,為下次開車做好準備。
3、模孔堵塞主要原因及清理方法
除因製造光潔度不夠外,新壓模還有很多原因會造成製不出顆粒。例如,壓模購來後擱置時間較長,模孔表麵生鏽;原料粗細度與模孔不符;當然還包括因為操作不熟練等原因。
新壓模孔在出廠前已進行一定的光整加工,粗糙度較低,但要達到最高產量還需用物料磨光。如果出廠前已用物料(配料:2/3的油性物料與1/3的純細沙子,再加入油脂組成混合物50kg,對新壓模試車旋轉15~30min)磨光,則再磨光時可適當減少磨光時間或直接接料生產。試運轉,一般先用油性飼料進行,確知所有模孔都出粒後(出粒孔要達到95%以上),再摻人摩擦作用較大的物料進行壓製並反複循環,直至將孔磨光。
當dang新xin模mo使shi用yong堵du塞sai後hou,或huo者zhe壓ya模mo經jing過guo較jiao長chang一yi段duan時shi間jian不bu用yong再zai重zhong新xin使shi用yong不bu能neng出chu顆ke粒li,一yi般ban采cai用yong的de方fang法fa是shi用yong鑽zuan頭tou把ba物wu料liao鑽zuan出chu來lai,或huo用yong鐵tie釘ding把ba它ta打da出chu來lai。但dan妒du.5以下的模孔並不那麼容易處理,用手槍鑽打孑L有諸多不利因素,遇到這種情況,筆者采用油煮壓模。其具體做法是:用鐵製油盤,放入廢機油,再放入堵模,使堵模全部浸入油內;然後在油盤底部加溫,直至模孔內物料有爆裂聲,就可以取出壓模,冷卻後重新裝機;tiaozhenghaohouanyuanlaicaozuofangfakaiche,zheyangnenggouxunsubayuanlaiduzhumokongdewuliaoqingchudiao,duiyamoyuanyouguangjieduyebuhuiyousunhuai。yibanlaishuo,siliaochangshiyongxinyamopeijianyingcongzhuanyezhizaochanggoumai,zheduiyonghuyouhendahaochu。youxieyonghubucongzhuanyesiliaojixiechanggoumaiyamopeijian,zixingjiagonghuozaidangdishichangjiejue。zhexieyamocaizhijiaocha,jiagonggongyibuwanzheng,biaomianyingduhejihejingdudoubunengbaozheng。shiyongzhexiefeizhengguiyamo,duikelijibenshenzhuchuandongyingxiangjiaoda,zaochengchuandonglingjiansunhuai、故障增多,增加整機維修費用,是得不償失的。
三門峽富通新能源銷售顆粒機、秸稈壓塊機、木屑顆粒機等生物質燃料飼料成型機械設備。



