DW系列带式干燥机
┊ DWT系列带式干燥机
┊ DW3-B型带式干燥机
特点
* 成批生产连续式干燥;
* 用于透气性较好的片状，条状，块状或颗粒状物料的干燥;
* 对于脱水蔬菜·中药饮片等类含水率高，而物料温度不允许高的物料尤为合适;
* 对脱水滤饼类的膏状物料，经造粒或制成棒状后亦可干燥;
* 该系列干燥机具有干燥速度快，蒸发强度高·产品质量好的优点。
Features
* Continuous drying for batch production.
* For rod , granulate materials with better air permeability.
* Especially for those with high humidityjow permissable temperature
like dewatering vegetable.chinese
medicine slices etc.
* Applicable for paste materials of dewatering residue in the
form,of gramulate or bar.
it The drier features high speed,high steam strength and high
quality
工作原理
* 工作原理如图所示，料斗中的物料由加料器均匀铺在网带上，网带采用12一60目不锈钢丝网，由传动装置拖动在干燥机内移动。干燥机由若干单元组成，每一单元热风独立循环，其中部分尾气由专门排湿风机4排出，每一单元排出废气量均有调节阀控制。在上循环单元中，循环风机5出来的风由侧面风道进入单元下腔，气流向上通过加热器7加热，经分配器6分配后，成喷射流吹向网带，穿过物料后进入上腔。干燥过程是热气流穿过物料层，完成热量与质量传递的过程。上腔由风管与风同入口相连，大部分气体循环，一部分温度较低含湿量较大的气体作为废气经排湿管、调节阀、排湿风机排出。下循环单元中，循环风机出来的风先进入上腔，向下经换热器加热，穿过物料层进入下腔，下腔由侧风道及回风管与风机入口相连，大部分气体循环，一部分排出。上、下循环单元根据用户需要可灵活配备，单元数量也可根据需要选取。
* 用于脱水蔬菜，一般使用三台设备串连使用，形成初干段，中间段及终干段。在初干段中，由干物料含水量高，透气性差，故应采用较小的铺推高的干燥温度。初干段中，干燥气体温度可达120℃以上。终干段内物料停留时间是初干段的3-6倍，铺料厚度是初干段的2-4倍。对干物料温度不超过60℃的要求，可采用80℃左右的干燥气体。采用多段组合能更好地发挥带式干燥机的性能，且干燥更均匀。
Working Principle
* 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 circulates separately
and waste air is exhausted by adjustable special fan.During the
upper circulation,circulated 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 by 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.regulation
valve and exhaust fan,In the low circulation unit,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
runing 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.
结构图 Structure Figrue
1.无级调速器
2.下循环段
3.上循环段
4.排湿风机
5.循环风机
6.分风器
7.加热器
8.传动系统
9.加料器
Structure Figrue
1.Stepless speed regulator
2.Lower circulation
3.Upper circulation
4.Humidify exhaust fan
5.Circualting fan
6.Air distributor
7.Heater
8.Driving system
9.Feeder
