粉體行業(yè)在線展覽
粉體行業(yè)在線展覽
DW系列
直接聯(lián)系
四川川大干燥科技工程有限責(zé)任公司.
四川成都
面議
DW系列
15468
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產(chǎn)品特點(diǎn) PRODUCT FEATURES:
工作原理 WORKING PRINCIPLE：
工作原理如圖所示，料斗中的物料由加料器均勻鋪在網(wǎng)帶上，網(wǎng)帶采用12-60
目不銹鋼絲網(wǎng)，由傳動(dòng)裝置拖動(dòng)在干燥機(jī)內(nèi)移動(dòng)。干燥機(jī)由若干單元組成，每一單元熱風(fēng)獨(dú)立循環(huán)，其中部分尾氣由專門排濕風(fēng)機(jī)4排出每一單元排出廢氣時(shí)均有調(diào)節(jié)閥控制。在上循環(huán)單元，循環(huán)風(fēng)機(jī)5出來的風(fēng)由側(cè)面風(fēng)道進(jìn)入單元下腔。氣流向上通過加熱器7加熱，經(jīng)分配器6分配后，成噴射流吹向網(wǎng)帶，穿過物料后進(jìn)入上腔。干燥過程是熱氣流穿過物料層，定然成熱量與質(zhì)量的傳遞的過和。上腔由風(fēng)管與風(fēng)機(jī)入口相連，大部分氣體循環(huán)經(jīng)排濕管、調(diào)節(jié)閥、排濕風(fēng)機(jī)排出。下循環(huán)單元中，循環(huán)風(fēng)機(jī)出來的風(fēng)先進(jìn)入下腔。向下經(jīng)換熱器加熱。穿過物料層進(jìn)入下腔，下腔由側(cè)風(fēng)道及回風(fēng)管與風(fēng)機(jī)口相連。大部分氣體循環(huán)，一部分排出。上、 下循環(huán)單元根據(jù)用戶需要可靈活配備，單元數(shù)量也可根據(jù)需要選取。
用于脫水蔬菜時(shí)，一般使用三臺(tái)設(shè)備串聯(lián)使用，形成初干段、中間段及終干段。在初干段中，由于物料含水量高，透氣性故應(yīng)采用較小的鋪料厚度，較快的運(yùn)行速度及較高的干燥溫度。初干段中，干燥氣體溫度可達(dá)1200C以上。終干段內(nèi)物料停留時(shí)間是初干段的3-6倍，鋪料厚度是初干段的2-4倍。對于物料溫度不超過600C的要求，可采用800C左右的干燥氣體。采用多段組合能更好地發(fā)按帶式干燥機(jī)的性能，且干燥更均勻。
As showed in the drawing, materials inside the hopper is spread uniformly by the feeder onto the mesh belt made of 12-60 eye stainless steel and moved inside the drier by driving devices. Drier is composed by a few units in which hot air enters the lower chamber of the unit and the air flow is heated and distributed to mesh belt in the form of spraying flow before it enters upper chamber through the belt materials. Drying process is the duration of hot air flowing through material layer, where heat and quality is transmitted. Upper chamber is connected b air pipe with fan inlet, in which, most part of air circulates except those with low temperature and high humidity which is drained through humidity exhaust, circulated air enters upper chamber first, heated by exchanger when down-streams through material layer to the lower chamber which is connected with fan inlet by side air pipes and return air pipes, most part of air circulates with little be drained. Moreover, each unit can be completed freely according to user’s request.
If used for dewatering vegetables, serial 3 sets is normally adopted to form initial, middle and final drying section, among which, initial section takes thinner spreading thickness, speedy running and higher drying temperature which can reach 120. hold time in the final section will be 3-6 time of initial one, spreading thickness will be 2-4 times, normally drying air around 80℃ is used for materials who require a temperature not over 60℃. All in all, multy-section composition will put the properties of belt drier into full play.
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