zaihuanmokelijizhilishizhong,danggongliaoquwuliaocenghouduchuyuzuijiazhishi,bianxingyajinquhejiyachengxingqudechangdudadaozuida。dangweiliaoliangpianxiao,gongliaoquwuliaocenghouduxiaoyuzuijiazhishi,bianxingyajinquhejiyachengxingquhuisuizhegongliaoquhoududejianxiaoersuoduan。yejiushishuogongliaoquwuliaocenghoudupianxiaoshi,bianxingyajinqudeqishidianjiangxiangjiyachengxingqudezhongdianyidong,erjiyachengxingqudezhongdianD是恒定不變的[10]。在(zai)環(huan)模(mo)和(he)壓(ya)輥(gun)結(jie)構(gou)參(can)數(shu)一(yi)定(ding)的(de)情(qing)況(kuang)下(xia),變(bian)形(xing)壓(ya)緊(jin)區(qu)的(de)起(qi)始(shi)點(dian)向(xiang)擠(ji)壓(ya)成(cheng)形(xing)區(qu)的(de)終(zhong)點(dian)移(yi)動(dong),這(zhe)時(shi)如(ru)果(guo)要(yao)將(jiang)物(wu)料(liao)壓(ya)到(dao)原(yuan)先(xian)的(de)密(mi)實(shi)程(cheng)度(du),理(li)論(lun)上(shang)講(jiang),變(bian)形(xing)壓(ya)緊(jin)區(qu)的(de)長(chang)度(du)不(bu)會(hui)縮(suo)短(duan),相(xiang)反(fan)還(hai)需(xu)要(yao)適(shi)當(dang)延(yan)長(chang)。因(yin)為(wei)隨(sui)著(zhe)變(bian)形(xing)壓(ya)緊(jin)區(qu)向(xiang)擠(ji)壓(ya)成(cheng)形(xing)區(qu)區(qu)終(zhong)點(dian)D的de移yi動dong,在zai任ren一yi相xiang同tong的de區qu間jian長chang度du內nei,空kong間jian的de縮suo小xiao量liang在zai不bu斷duan的de變bian小xiao,導dao致zhi擠ji壓ya成cheng形xing區qu的de長chang度du也ye在zai減jian小xiao,進jin而er造zao成cheng被bei擠ji壓ya進jin環huan模mo孔kong的de物wu料liao減jian少shao,生sheng產chan效xiao率lv降jiang低di。
製(zhi)粒(li)時(shi),供(gong)料(liao)區(qu)物(wu)料(liao)層(ceng)厚(hou)度(du)隻(zhi)要(yao)小(xiao)於(yu)變(bian)形(xing)壓(ya)緊(jin)區(qu)的(de)最(zui)大(da)起(qi)始(shi)點(dian),都(dou)將(jiang)直(zhi)接(jie)影(ying)響(xiang)變(bian)形(xing)壓(ya)緊(jin)區(qu)和(he)擠(ji)壓(ya)成(cheng)形(xing)區(qu)的(de)有(you)效(xiao)工(gong)作(zuo)長(chang)度(du),並(bing)引(yin)起(qi)工(gong)作(zuo)電(dian)流(liu)的(de)波(bo)動(dong)和(he)生(sheng)產(chan)效(xiao)率(lv)的(de)變(bian)化(hua)。如(ru)果(guo)供(gong)料(liao)區(qu)物(wu)料(liao)層(ceng)厚(hou)度(du)大(da)於(yu)變(bian)形(xing)壓(ya)緊(jin)區(qu)的(de)最(zui)大(da)起(qi)始(shi)點(dian),即(ji)超(chao)過(guo)供(gong)料(liao)區(qu)物(wu)料(liao)層(ceng)厚(hou)度(du)的(de)最(zui)佳(jia)值(zhi)。此(ci)時(shi)除(chu)了(le)增(zeng)加(jia)供(gong)料(liao)區(qu)內(nei)的(de)物(wu)料(liao)層(ceng)的(de)厚(hou)度(du)外(wai),是(shi)不(bu)會(hui)對(dui)單(dan)位(wei)時(shi)間(jian)內(nei)的(de)環(huan)模(mo)顆(ke)粒(li)機(ji)產(chan)量(liang)和(he)工(gong)作(zuo)電(dian)流(liu)產(chan)生(sheng)影(ying)響(xiang)的(de)(如圖2.4所示),即(ji)不(bu)會(hui)引(yin)起(qi)製(zhi)粒(li)能(neng)耗(hao)和(he)生(sheng)產(chan)效(xiao)率(lv)的(de)變(bian)化(hua)。因(yin)為(wei)供(gong)料(liao)區(qu)物(wu)料(liao)層(ceng)厚(hou)度(du)超(chao)過(guo)了(le)壓(ya)緊(jin)區(qu)最(zui)大(da)起(qi)始(shi)點(dian),而(er)變(bian)形(xing)壓(ya)緊(jin)區(qu)和(he)擠(ji)壓(ya)成(cheng)形(xing)區(qu)的(de)長(chang)度(du)是(shi)不(bu)會(hui)有(you)任(ren)何(he)變(bian)化(hua)的(de),多(duo)喂(wei)入(ru)的(de)物(wu)料(liao)所(suo)在(zai)供(gong)料(liao)區(qu)由(you)於(yu)攫(jue)入(ru)角(jiao)大(da)於(yu)環(huan)模(mo)和(he)壓(ya)輥(gun)形(xing)成(cheng)的(de)臨(lin)界(jie)磨(mo)擦(ca)角(jiao),多(duo)餘(yu)的(de)物(wu)料(liao)是(shi)不(bu)會(hui)被(bei)攫(jue)入(ru)變(bian)形(xing)壓(ya)緊(jin)區(qu)的(de)。在(zai)這(zhe)種(zhong)情(qing)況(kuang)下(xia)隨(sui)著(zhe)喂(wei)料(liao)量(liang)的(de)不(bu)斷(duan)加(jia)大(da),物(wu)料(liao)進(jin)出(chu)平(ping)衡(heng)被(bei)打(da)破(po),喂(wei)料(liao)量(liang)大(da)於(yu)製(zhi)粒(li)產(chan)量(liang),供(gong)料(liao)區(qu)的(de)物(wu)料(liao)層(ceng)會(hui)越(yue)積(ji)越(yue)厚(hou),直(zhi)到(dao)堆(dui)滿(man)所(suo)有(you)空(kong)隙(xi),導(dao)致(zhi)環(huan)模(mo)孔(kong)堵(du)塞(sai),環(huan)模(mo)顆(ke)粒(li)機(ji)不(bu)能(neng)正(zheng)常(chang)工(gong)作(zuo)。因(yin)此(ci),在(zai)環(huan)模(mo)顆(ke)粒(li)機(ji)實(shi)際(ji)生(sheng)產(chan)過(guo)程(cheng)中(zhong),隨(sui)著(zhe)供(gong)料(liao)區(qu)物(wu)料(liao)層(ceng)厚(hou)度(du)的(de)變(bian)化(hua),環(huan)模(mo)顆(ke)粒(li)機(ji)的(de)瞬(shun)時(shi)生(sheng)產(chan)效(xiao)率(lv)和(he)製(zhi)粒(li)能(neng)耗(hao)都(dou)會(hui)相(xiang)應(ying)隨(sui)之(zhi)發(fa)生(sheng)改(gai)變(bian)。隻(zhi)要(yao)供(gong)料(liao)區(qu)物(wu)料(liao)層(ceng)厚(hou)度(du)沒(mei)有(you)超(chao)過(guo)壓(ya)緊(jin)區(qu)最(zui)大(da)起(qi)始(shi)點(dian)時(shi),就(jiu)不(bu)會(hui)因(yin)為(wei)供(gong)料(liao)區(qu)物(wu)料(liao)層(ceng)厚(hou)度(du)的(de)增(zeng)大(da)造(zao)成(cheng)供(gong)料(liao)區(qu)料(liao)層(ceng)越(yue)堆(dui)越(yue)多(duo),而(er)導(dao)致(zhi)顆(ke)粒(li)機(ji)不(bu)能(neng)正(zheng)常(chang)工(gong)作(zuo)的(de)現(xian)象(xiang)。因(yin)此(ci),在(zai)環(huan)模(mo)顆(ke)粒(li)機(ji)處(chu)於(yu)穩(wen)定(ding)的(de)工(gong)作(zuo)過(guo)程(cheng)中(zhong),環(huan)模(mo)和(he)壓(ya)輥(gun)是(shi)勻(yun)速(su)旋(xuan)轉(zhuan)的(de),如(ru)果(guo)喂(wei)入(ru)物(wu)料(liao)保(bao)持(chi)不(bu)變(bian),每(mei)一(yi)瞬(shun)時(shi)的(de)工(gong)作(zuo)狀(zhuang)態(tai)基(ji)本(ben)上(shang)都(dou)是(shi)相(xiang)同(tong)的(de),環(huan)模(mo)顆(ke)粒(li)機(ji)工(gong)作(zuo)電(dian)流(liu)波(bo)動(dong)較(jiao)小(xiao),即(ji)製(zhi)粒(li)能(neng)耗(hao)也(ye)相(xiang)對(dui)穩(wen)定(ding)。
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因yin此ci,當dang環huan模mo顆ke粒li機ji結jie構gou參can數shu和he製zhi粒li功gong率lv一yi定ding時shi,環huan模mo和he壓ya輥gun之zhi間jian供gong料liao區qu物wu料liao層ceng厚hou度du存cun在zai一yi最zui佳jia值zhi,可ke以yi最zui大da程cheng度du地di提ti高gao環huan模mo顆ke粒li機ji生sheng產chan效xiao率lv和he降jiang低di製zhi粒li能neng耗hao。



