muqian,zhilijipubiancaiyongrengongdingqiyazhudejiazhifangshijinxingrunhua,qiquedianshirunhuazhuangkuangbuyijianzha,jiazhiliangnanyizhunquezhangwo,changzaochengjiazhiguoduoerlangfeiyouzhihuoguoshaoersunhuailingjian,shenzhichuxianrunhuadianbeiyiloujiazhidengqingkuang,erqieweihurenyuanlaodongqiangduda.自動潤滑裝置是改善製粒機潤滑現狀的必然發展趨勢.因此,研製製粒機的自動潤滑裝置,具有重要的生產意義和經濟效益。
1、自動潤滑裝置的總體設計

圖1為wei自zi動dong潤run滑hua裝zhuang置zhi的de總zong體ti設she計ji,首shou先xian使shi用yong控kong製zhi器qi設she定ding潤run滑hua時shi間jian和he加jia脂zhi量liang,通tong過guo潤run滑hua係xi統tong將jiang潤run滑hua脂zhi添tian加jia到dao環huan模mo製zhi粒li機ji內nei,實shi現xian對dui主zhu軸zhou軸zhou承cheng和he壓ya輥gun軸zhou承cheng的de潤run滑hua.
潤滑係統的原理如圖2所示,其工作原理為:qidongrunhuazhibeng,runhuaxitongzaihuanxiangfadezuoyongxia,jiaotidixiangliangtiaozhuyouzhiguangongzhi,shuangxianfenpeiqidelianggejinzhikoufenbieyuertiaozhuyouzhiguandaoxianglian,erchuzhikoufenbieyurunhuadianxianglian,dangyitiaozhuguandaojiayagongzhishi,lingyitiaoxieya,dangliangguandaoyachadadao5 MPa時,控製器發出信號,控製換向閥換向,由主管道交替更換供脂,係統完成一次循環.當潤滑結束時,由控製器發出信號,停止運轉,
該潤滑係統向各潤滑點的加脂動作無嚴格的先後順序,離泵最近的潤滑點,背壓小的潤滑點,先供脂.供gong脂zhi管guan內nei的de壓ya力li達da到dao分fen配pei器qi動dong作zuo所suo需xu的de壓ya力li,分fen配pei器qi就jiu能neng動dong作zuo,而er分fen配pei器qi動dong作zuo完wan成cheng又you使shi供gong脂zhi管guan內nei壓ya力li繼ji續xu上shang升sheng,當dang供gong脂zhi管guan內nei各ge處chu的de壓ya力li都dou超chao過guo分fen配pei器qi動dong作zuo所suo需xu的de壓ya力li時shi,分fen配pei器qi全quan部bu動dong作zuo,完wan成cheng係xi統tong的de給gei脂zhi動dong作zuo,該gai潤run滑hua係xi統tong使shi用yong兩liang條tiao供gong脂zhi管guan交jiao替ti供gong脂zhi,當dang其qi中zhong一yi條tiao由you潤run滑hua脂zhi泵beng供gong脂zhi時shi,另ling一yi條tiao則ze向xiang儲chu脂zhi桶tong開kai放fang,雙shuang線xian分fen配pei器qi有you兩liang個ge進jin脂zhi口kou,分fen別bie與yu兩liang根gen供gong脂zhi管guan連lian接jie,當dang分fen配pei器qi或huo某mou一yi油you脂zhi管guan道dao堵du塞sai時shi,不bu影ying響xiang其qi他ta潤run滑hua點dian的de正zheng常chang供gong脂zhi;但當某一主管道有泄露時,潤滑係統壓力降低,控製器得不到5 MPa的動作壓力,將不能正常完成供脂,此時必須排除該泄露點,使潤滑係統恢複正常工作。
該自動潤滑裝置能自動定時定量向製粒機中添加潤滑脂,工作時無需停機,以提高使用效率.潤滑部位的摩擦副油膜不斷地被新的潔淨的油膜取代,有利於延長運動零件的使用壽命,從而保證整機性能.

2、自動潤滑裝置的控製方法
2.1時間控製
控(kong)製(zhi)器(qi)進(jin)行(xing)時(shi)間(jian)間(jian)隔(ge)和(he)時(shi)間(jian)監(jian)控(kong)設(she)定(ding),以(yi)實(shi)現(xian)定(ding)時(shi)加(jia)脂(zhi)與(yu)故(gu)障(zhang)檢(jian)測(ce)功(gong)能(neng),當(dang)累(lei)計(ji)環(huan)模(mo)製(zhi)粒(li)機(ji)的(de)運(yun)行(xing)時(shi)間(jian)達(da)到(dao)控(kong)製(zhi)器(qi)設(she)定(ding)的(de)加(jia)脂(zhi)時(shi)間(jian)間(jian)隔(ge)時(shi),控(kong)製(zhi)器(qi)發(fa)出(chu)電(dian)信(xin)號(hao),驅(qu)動(dong)潤(run)滑(hua)泵(beng)進(jin)行(xing)加(jia)脂(zhi).其時間間隔為0. 5,1,2,…,24 h共25檔可調,根據不同種類的環模製粒機的工作環境,由操作人員選定加脂時間間隔,監控時間分為1,2,…,5 min共5檔可調,當發生加脂故障時,累計的監控時間內不能閉合,控製器會發出報警信號.控製器設定的監控時間必須大於潤滑脂泵的正常工作時間.
2.2加脂量控製
分配器將油脂精確定量,將儲存的潤滑脂輸送到各個潤滑節點,實現定量加脂.分配器儲油腔內柱塞的往複位移決定潤滑脂的儲脂量或輸脂量,分別設定為0.1,0.2,0.4共3zhongbutongguige,genjurunhuadianmocafufuhehexiangduisududedaxiao,xuanpeiedingshuzhiliang,dangrunhuazhixiangfenpeiqigongyouzhishi,zaiyouyazuoyongxia,jiangfenpeiqidechuyoukongguanbi,liantongjinyoukouhechuyouqiang.隨(sui)著(zhe)油(you)脂(zhi)輸(shu)入(ru)腔(qiang)內(nei),儲(chu)油(you)柱(zhu)塞(sai)被(bei)推(tui)移(yi),在(zai)儲(chu)油(you)的(de)同(tong)時(shi)推(tui)動(dong)彈(dan)簧(huang)壓(ya)縮(suo)儲(chu)能(neng),當(dang)潤(run)滑(hua)脂(zhi)泵(beng)停(ting)止(zhi)工(gong)作(zuo)時(shi),主(zhu)油(you)路(lu)卸(xie)載(zai),在(zai)儲(chu)油(you)腔(qiang)與(yu)主(zhu)油(you)路(lu)內(nei)的(de)壓(ya)差(cha)作(zuo)用(yong)下(xia),止(zhi)回(hui)閥(fa)關(guan)閉(bi)進(jin)油(you)口(kou),打(da)開(kai)出(chu)油(you)口(kou),使(shi)儲(chu)油(you)腔(qiang)與(yu)出(chu)油(you)口(kou)連(lian)通(tong),腔(qiang)內(nei)油(you)脂(zhi)在(zai)彈(dan)簧(huang)壓(ya)力(li)作(zuo)用(yong)下(xia)從(cong)出(chu)油(you)口(kou)經(jing)接(jie)受(shou)油(you)管(guan)注(zhu)入(ru)各(ge)潤(run)滑(hua)節(jie)點(dian),實(shi)現(xian)自(zi)動(dong)定(ding)量(liang)加(jia)脂(zhi).
3、控製器的研製

自動潤滑控製器的硬件組成如圖3所示,它以單片機為核心,外圍電路包括複位電路、數據存儲器、報警/顯示電路以及潤滑脂泵控製電路.單片機接收開機信號,根據數據存儲器中設定的控製數據完成控製方案,通過報警/顯示電路顯示,並控製潤滑脂泵,實現定時定量加脂.
該控製器主控芯片選用美國Microchip公司的PIC16C57單片機,很好地實現了輸入/輸出和數據處理功能.采用外接7044複位芯片構成上電複位電路,上電時複位並防止電壓抖動而產生的多次複位,數據存儲器選用24COIE2PROM芯(xin)片(pian),用(yong)來(lai)存(cun)儲(chu)環(huan)模(mo)製(zhi)粒(li)機(ji)的(de)運(yun)行(xing)時(shi)間(jian)和(he)係(xi)統(tong)工(gong)作(zuo)時(shi)間(jian),以(yi)實(shi)現(xian)定(ding)時(shi)自(zi)動(dong)潤(run)滑(hua)的(de)功(gong)能(neng),同(tong)時(shi)累(lei)加(jia)環(huan)模(mo)製(zhi)粒(li)機(ji)的(de)運(yun)行(xing)時(shi)間(jian),當(dang)達(da)到(dao)設(she)定(ding)的(de)加(jia)脂(zhi)間(jian)隔(ge)時(shi)間(jian)時(shi),由(you)輸(shu)出(chu)信(xin)號(hao)經(jing)光(guang)耦(ou)U2隔離Tl放大後使繼電器動作,係統開始加脂循環周期,整個電路結構簡潔,安全可靠,功能完備,實現了對環模製粒機潤滑的自動控製.
根據控製原理,主程序流程圖如圖4所(suo)示(shi),將(jiang)選(xuan)定(ding)的(de)加(jia)脂(zhi)間(jian)隔(ge)時(shi)間(jian)和(he)監(jian)控(kong)時(shi)間(jian)儲(chu)存(cun)於(yu)控(kong)製(zhi)器(qi)中(zhong),控(kong)製(zhi)器(qi)累(lei)計(ji)顆(ke)粒(li)機(ji)的(de)運(yun)行(xing)時(shi)間(jian),當(dang)達(da)到(dao)控(kong)製(zhi)器(qi)設(she)定(ding)的(de)加(jia)脂(zhi)間(jian)隔(ge)時(shi)間(jian)值(zhi)時(shi),控(kong)製(zhi)器(qi)通(tong)知(zhi)潤(run)滑(hua)泵(beng)進(jin)行(xing)加(jia)脂(zhi)工(gong)作(zuo),同(tong)時(shi)開(kai)始(shi)累(lei)計(ji)監(jian)控(kong)時(shi)間(jian).如壓力開關在小於控製器設定的監控時間內閉合,則控製器發出信號使潤滑脂泵停止運轉,並為累計下一循環的間隔時間發出指令.若發生加脂故障,則發出報警信號,需停機查出故障原因,並予以排除.控製器設定了手動控製鍵,用於調試及檢測.

4、結語
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三門峽富通新能源主要生產和銷售顆粒機、秸稈壓塊機、飼料顆粒機等生物質燃料飼料成型機械設備。



