目(mu)前(qian)影(ying)響(xiang)中(zhong)藥(yao)浸(jin)膏(gao)質(zhi)量(liang)的(de)關(guan)鍵(jian)仍(reng)然(ran)是(shi)因(yin)為(wei)沿(yan)用(yong)了(le)不(bu)適(shi)合(he)中(zhong)藥(yao)浸(jin)膏(gao)物(wu)性(xing)的(de)濃(nong)縮(suo)幹(gan)燥(zao)技(ji)術(shu)設(she)備(bei)。真(zhen)空(kong)球(qiu)形(xing)濃(nong)縮(suo)罐(guan)易(yi)發(fa)生(sheng)泡(pao)沫(mo)溢(yi)料(liao)和(he)局(ju)部(bu)過(guo)熱(re),真(zhen)空(kong)旋(xuan)轉(zhuan)刮(gua)板(ban)薄(bo)膜(mo)濃(nong)縮(suo)機(ji)會(hui)產(chan)生(sheng)磨(mo)損(sun)異(yi)物(wu)。料(liao)盤(pan)式(shi)熱(re)風(feng)烘(hong)箱(xiang)離(li)不(bu)開(kai)手(shou)工(gong)操(cao)作(zuo),特(te)別(bie)是(shi)在(zai)大(da)型(xing)化(hua)浸(jin)膏(gao)幹(gan)燥(zao)時(shi)繁(fan)重(zhong)手(shou)工(gong)勞(lao)動(dong)帶(dai)來(lai)相(xiang)當嚴重的操作性汙染。噴霧幹燥由於呈粘性浸膏霧滴粘附塔壁而降低浸膏收率,影響經濟效益。連續真空帶式幹燥烘幹機中(zhong)移(yi)動(dong)薄(bo)鋼(gang)帶(dai)上(shang)的(de)浸(jin)膏(gao)液(ye),靠(kao)隔(ge)著(zhe)空(kong)氣(qi)間(jian)隙(xi)的(de)加(jia)熱(re)元(yuan)件(jian)將(jiang)熱(re)量(liang)傳(chuan)遞(di)給(gei)浸(jin)膏(gao)液(ye),傳(chuan)熱(re)效(xiao)果(guo)很(hen)差(cha)而(er)需(xu)要(yao)很(hen)大(da)麵(mian)積(ji)鋼(gang)帶(dai),故(gu)設(she)備(bei)結(jie)構(gou)複(fu)雜(za)龐(pang)大(da),價(jia)格(ge)昂(ang)貴(gui)使(shi)中(zhong)藥(yao)廠(chang)望(wang)而(er)卻(que)步(bu)。
在最近參加藥機展銷會上,了解到不少浸膏的小時產量隻在10~20 kg/h,都希望能有符合這樣小規模生產的浸膏真空濃縮燥機,於是就萌發了研製開發小型浸膏真空濃縮幹燥烘幹機的設想。
大多數浸膏都有較高的熱敏性,有的要求加熱溫度小於50℃,濃(nong)縮(suo)蒸(zheng)發(fa)的(de)脫(tuo)水(shui)效(xiao)率(lv)遠(yuan)遠(yuan)大(da)於(yu)幹(gan)燥(zao),蒸(zheng)發(fa)濃(nong)縮(suo)脫(tuo)除(chu)單(dan)位(wei)水(shui)量(liang)所(suo)需(xu)綜(zong)合(he)費(fei)用(yong)遠(yuan)遠(yuan)低(di)於(yu)任(ren)何(he)於(yu)燥(zao)。而(er)許(xu)多(duo)經(jing)蒸(zheng)發(fa)後(hou)的(de)提(ti)取(qu)液(ye)濃(nong)度(du)差(cha)別(bie)很(hen)大(da),為(wei)了(le)提(ti)高(gao)浸(jin)膏(gao)幹(gan)燥(zao)效(xiao)率(lv),很(hen)有(you)必(bi)要(yao)將(jiang)蒸(zheng)發(fa)提(ti)取(qu)液(ye)進(jin)一(yi)步(bu)濃(nong)縮(suo)到(dao)較(jiao)高(gao)濃(nong)度(du)的(de)水(shui)平(ping)。如(ru)果(guo)為(wei)了(le)濃(nong)縮(suo)而(er)再(zai)設(she)另(ling)一(yi)台(tai)濃(nong)縮(suo)器(qi),顯(xian)然(ran)既(ji)不(bu)經(jing)濟(ji)又(you)很(hen)不(bu)緊(jin)湊(cou)。於(yu)是(shi)決(jue)定(ding)在(zai)開(kai)發(fa)的(de)浸(jin)膏(gao)幹(gan)燥(zao)烘(hong)幹(gan)機(ji)內(nei)設(she)定(ding)一(yi)個(ge)尺(chi)寸(cun)比(bi)幹(gan)燥(zao)小(xiao)得(de)多(duo)的(de)真(zhen)空(kong)薄(bo)膜(mo)蒸(zheng)發(fa)器(qi),將(jiang)兩(liang)者(zhe)合(he)而(er)為(wei)一(yi)形(xing)成(cheng)二(er)合(he)一(yi)中(zhong)藥(yao)浸(jin)膏(gao)真(zhen)空(kong)濃(nong)縮(suo)幹(gan)燥(zao)烘(hong)幹(gan)機(ji)。
2、浸膏真空濃縮幹燥烘幹機的結構和工作原理
如(ru)圖(tu)所(suo)示(shi),濃(nong)縮(suo)和(he)幹(gan)燥(zao)均(jun)采(cai)用(yong)滾(gun)筒(tong)加(jia)熱(re)方(fang)式(shi),故(gu)設(she)兩(liang)個(ge)一(yi)大(da)一(yi)小(xiao)的(de)滾(gun)筒(tong)。大(da)滾(gun)筒(tong)作(zuo)真(zhen)空(kong)幹(gan)燥(zao)用(yong),小(xiao)滾(gun)筒(tong)作(zuo)稀(xi)浸(jin)膏(gao)液(ye)真(zhen)空(kong)薄(bo)膜(mo)濃(nong)縮(suo)用(yong)。大(da)小(xiao)滾(gun)筒(tong)共(gong)用(yong)一(yi)個(ge)低(di)溫(wen)飽(bao)和(he)水(shui)蒸(zheng)汽(qi)發(fa)生(sheng)器(qi),用(yong)0.1~0.2 MPa飽和蒸汽或電為一次熱源,產生50~110℃的de低di溫wen飽bao和he水shui蒸zheng汽qi作zuo為wei二er次ci熱re源yuan。大da小xiao滾gun筒tong分fen別bie由you兩liang台tai調tiao速su電dian動dong機ji驅qu動dong,可ke根gen據ju濃nong縮suo和he幹gan燥zao量liang的de需xu要yao調tiao控kong轉zhuan速su。稀xi的de浸jin膏gao進jin料liao淋lin灑sa在zai濃nong縮suo滾gun筒tong上shang,靠kao旋xuan轉zhuan壓ya輥gun擠ji壓ya去qu除chu濃nong縮suo滾gun筒tong上shang的de濃nong縮suo物wu。勻yun薄bo壓ya輥gun和he濃nong縮suo物wu接jie觸chu,濃nong縮suo物wu靠kao粘zhan性xing沾zhan粘zhan在zai勻yun薄bo壓ya輥gun上shang,然ran後hou將jiang勻yun薄bo壓ya輥gun上shang的de濃nong縮suo物wu均jun勻yun轉zhuan移yi到dao幹gan燥zao滾gun筒tong上shang,在zai低di速su轉zhuan動dong滾gun筒tong上shang的de薄bo層ceng濃nong縮suo浸jin膏gao經jing真zhen空kong和he低di溫wen加jia熱re下xia脫tuo水shui變bian幹gan,幹gan浸jin膏gao經jing過guo滾gun筒tong的de鏟chan刀dao處chu被bei鏟chan刀dao割ge下xia而er落luo入ru幹gan燥zao浸jin膏gao料liao筒tong內nei。
粘(zhan)稠(chou)浸(jin)膏(gao)粘(zhan)貼(tie)在(zai)於(yu)燥(zao)滾(gun)筒(tong)的(de)表(biao)麵(mian)上(shang),受(shou)真(zhen)空(kong)作(zuo)用(yong),蒸(zheng)發(fa)主(zhu)要(yao)發(fa)生(sheng)在(zai)浸(jin)膏(gao)層(ceng)表(biao)麵(mian),緊(jin)貼(tie)在(zai)加(jia)熱(re)滾(gun)筒(tong)麵(mian)上(shang)的(de)浸(jin)膏(gao)中(zhong)水(shui)分(fen)受(shou)熱(re)而(er)蒸(zheng)發(fa),蒸(zheng)發(fa)出(chu)的(de)水(shui)分(fen)逐(zhu)向(xiang)浸(jin)膏(gao)表(biao)層(ceng)遷(qian)移(yi)和(he)蒸(zheng)發(fa),因(yin)浸(jin)膏(gao)層(ceng)很(hen)薄(bo)故(gu)蒸(zheng)發(fa)強(qiang)度(du)特(te)高(gao),熱(re)量(liang)又(you)直(zhi)接(jie)來(lai)自(zi)滾(gun)筒(tong),而(er)不(bu)是(shi)像(xiang)帶(dai)式(shi)幹(gan)燥(zao)烘(hong)幹(gan)機(ji)那(na)樣(yang)熱(re)量(liang)來(lai)自(zi)中(zhong)間(jian)隔(ge)著(zhe)空(kong)氣(qi)層(ceng)的(de)加(jia)熱(re)元(yuan)件(jian),故(gu)蒸(zheng)發(fa)強(qiang)度(du)比(bi)對(dui)流(liu)幹(gan)燥(zao)高(gao)1~2個數量級,比帶式幹燥烘幹機也高很多。富通新能源不但生產銷售木屑烘幹機等鋸末木屑成型機械設備,而且還大量銷售顆粒機、木屑顆粒機等生物質燃料成型機械設備。
nongsuoheganzaojuncaiyongdiwenbaoheshuizhengqizuoreyuan,jiarexiaoguoyuanyuanhaoyudiwenreshuijiarefangfa,jiareganzaodexiaolvyeyuanyuangaoyuzhenkongdaishijiareganzaohongganji。wenduhenyikongzhihetiaojie,zai50~100℃低(di)溫(wen)下(xia)蒸(zheng)發(fa)和(he)幹(gan)燥(zao),隻(zhi)要(yao)保(bao)持(chi)足(zu)夠(gou)高(gao)的(de)真(zhen)空(kong)度(du),即(ji)能(neng)在(zai)一(yi)定(ding)的(de)加(jia)熱(re)溫(wen)度(du)下(xia)保(bao)持(chi)一(yi)定(ding)的(de)蒸(zheng)發(fa)溫(wen)度(du)或(huo)蒸(zheng)發(fa)溫(wen)度(du)差(cha),高(gao)效(xiao)率(lv)低(di)溫(wen)度(du)的(de)真(zhen)空(kong)濃(nong)縮(suo)和(he)幹(gan)燥(zao)就(jiu)能(neng)順(shun)利(li)進(jin)行(xing)。
在(zai)大(da)小(xiao)兩(liang)個(ge)滾(gun)筒(tong)內(nei),蒸(zheng)汽(qi)凝(ning)水(shui)不(bu)斷(duan)由(you)附(fu)於(yu)滾(gun)筒(tong)內(nei)壁(bi)上(shang)的(de)水(shui)鬥(dou)在(zai)旋(xuan)轉(zhuan)中(zhong)將(jiang)凝(ning)水(shui)提(ti)升(sheng)和(he)倒(dao)入(ru)去(qu)蒸(zheng)汽(qi)發(fa)生(sheng)器(qi)的(de)輸(shu)水(shui)管(guan),在(zai)低(di)溫(wen)蒸(zheng)汽(qi)發(fa)生(sheng)器(qi)內(nei)加(jia)熱(re)盤(pan)管(guan)使(shi)水(shui)產(chan)生(sheng)飽(bao)和(he)水(shui)蒸(zheng)汽(qi),再(zai)由(you)飽(bao)和(he)水(shui)蒸(zheng)汽(qi)在(zai)滾(gun)筒(tong)內(nei)壁(bi)上(shang)給(gei)熱(re)冷(leng)凝(ning)變(bian)成(cheng)凝(ning)水(shui),如(ru)此(ci)繼(ji)續(xu)循(xun)環(huan)。
3、可進一步提高幹燥效率和降低設備投資
眾zhong所suo周zhou知zhi,在zai幹gan燥zao進jin行xing到dao非fei等deng速su幹gan燥zao後hou階jie段duan時shi,幹gan燥zao速su度du越yue來lai越yue小xiao,需xu要yao很hen長chang時shi間jian才cai能neng達da到dao產chan品pin的de幹gan燥zao標biao準zhun。但dan可ke以yi利li用yong本ben濃nong縮suo幹gan燥zao烘hong幹gan機ji在zai產chan出chu含han水shui量liang較jiao高gao但dan已yi失shi去qu粘zhan性xing的de浸jin膏gao時shi,就jiu產chan下xia這zhe種zhong浸jin膏gao人ren無wu料liao盤pan藥yao品pin真zhen空kong幹gan燥zao箱xiang中zhong進jin一yi步bu幹gan燥zao,這zhe樣yang做zuo可ke以yi使shi處chu理li量liang大da幅fu度du提ti高gao。中zhong藥yao浸jin膏gao幹gan燥zao的de難nan度du在zai於yu它ta的de粘zhan性xing,利li用yong本ben濃nong縮suo幹gan燥zao烘hong幹gan機ji可ke產chan出chu尚shang未wei達da到dao得de到dao產chan品pin含han水shui量liang的de中zhong間jian產chan品pin,使shi浸jin膏gao幹gan燥zao越yue過guo了le幹gan燥zao的de最zui困kun難nan的de脫tuo粘zhan階jie段duan,而er已yi失shi去qu粘zhan性xing的de浸jin膏gao進jin一yi步bu利li用yong無wu料liao盤pan藥yao品pin真zhen空kong幹gan箱xiang脫tuo水shui達da標biao,就jiu很hen簡jian單dan容rong易yi。這zhe是shi充chong分fen利li用yong濃nong縮suo幹gan燥zao烘hong幹gan機ji高gao效xiao率lv蒸zheng發fa脫tuo水shui和he脫tuo粘zhan,以yi及ji無wu料liao盤pan藥yao品pin真zhen空kong幹gan燥zao箱xiang設she備bei投tou資zi特te低di幹gan燥zao效xiao率lv很hen高gao的de特te長chang,綜zong合he和he發fa揮hui兩liang種zhong設she備bei的de特te長chang和he優you點dian,在zai使shi浸jin膏gao的de質zhi量liang和he產chan量liang大da幅fu度du提ti高gao的de同tong時shi並bing使shi運yun轉zhuan費fei用yong降jiang至zhi最zui低di。
當dang然ran也ye可ke以yi利li用yong此ci濃nong縮suo幹gan燥zao烘hong幹gan機ji為wei中zhong型xing的de無wu隱yin患huan雙shuang錐zhui真zhen空kong浸jin膏gao幹gan燥zao烘hong幹gan機ji,和he大da型xing的de連lian續xu真zhen空kong浸jin膏gao幹gan燥zao烘hong幹gan機ji製zhi取qu開kai車che所suo需xu的de浸jin膏gao原yuan粉fen,為wei大da中zhong型xing浸jin膏gao製zhi料liao幹gan燥zao烘hong幹gan機ji創chuang造zao開kai車che的de條tiao件jian。



