Detailed Product Description

belt dryer:

Condition of the process:

1  MaterialTapioca pieces

2  Initial water content65%

3  Final water content≤15%

4  Moistute capacity200T/24h

5  Thick of the piecesδ5mm    Diameter:~ Φ80

6  Proportion of the dry products~0.6g/cm³  

7  Character of the waterinside water

8  Material of the equipmentStainless steel of the contact parts

9  InstallationIn the room

10              Power supply380V   50HZ  three phases four lines

11              Circumstance20  760mmHG   Φ=60%

12              Temperature of the inner chamber80-120

13              Heating sourceCoal Fuel Hot Air Furnace

Calculate of the process

1  Capacity of wet products8T/h

2  Evaporate of the water5T/h

3  Capacity of dry products3.2T/h

4  Consumption of the dry air23200kg/h

5  Consumption of the heat6250000⁴kcal/h

Specification of the equipment

       We choose four sets of the DWF3 2-30 Series Belt Dryer according to the characteristic of the material and the dry capacity. And the heating source is four sets of the XH-2000000Kcal Coal Fuel Hot Air Fuenace.

      Main technicalparaneter of the equipment:

  Working principle:

Feeding the material in the net belt equably from the feeding device, the net is the 12-60mesh stainless steel wire net, and move in the drying chamber by drive device. The drying part was composed by several units, each unit the hot air cycle independently. Parts of the eahaust gas discharged by the special diacharging damp fan. Each unit has control valve to control the eahaust gas. The hot air from up bottom or fron bottom up through the net belt which covered with the material, finish the heat and quality transfer process, and remove the moisture of the material away. The net belt move slowly, the speed can adjust in accordance with the temperature of the material freely. The finished products discharging into the container continuesly. The up and dowm cycle units can adjust in accordance with the customers requirements, and the number of the units also can choose by user.

Generally used three sets of equipment used in series to form a dry process as beginning, middle and end. In the early dry process, due to high moisture content of materials, poor ventilation, so do not put the material too thick. faster speed and higher drying temperature. For the material that temperature does not allow more than 60 , the beginning of the dry process, the drying temperature can below 120 . The final drying process the material can stay in the drying chamber as 3-6 times than the beginning process. And the thinkness is 2-4 times than the beginning process. For materials that temperature can not more than 60 ,you can use may be about 80 to dry it. Use of multi-units combinations can dry better and dry more uniformity.

Characteristic

Widely used in food, agricultural and sideline products, dehydrated vegetables, herbal medicines, aquatic products, native products, animal feed and chemical industry raw materials awaiting sheet, strip, block and dry granule materials dehydration industry.

The series dryer has high efficient and energy saving features. It has a leading level in domestical market in flow through heating, inlet air by layer and drying by unit with the adjust temperature, recovery the waste heat and so on.

The shape of the Tapioca piece is big, it is east to block the net hole, and the ventilate is poor. So we use three layer dryer, dry in series. When the material drop into the lower layer, the material will turn over, it makes the under surface of the material drying evenly. At the same time, there is independent drive motor can adjust the drying speed in each layer.

At the beginning of the Tapioca pieces into the dryer with more moisture, you can increase the dry temperature. At this time, the material is in a pre-heating phase. The temperature of the material is the same as the wet ball. With the drying, the moisture of the material became lower and lower, and the temperature in the dryer is lower too. In order not to affect the character of the material. So, in the whole drying process, it is always in the lower temperature and heavy air volume to dry. Especially at the bottom layer, the final moisture of the material is very lower, and the drying speed is slower too.

After heating the hot air furnace, the hot air was blow into each hot air port by blower, then into the dryer. The hot air keeping cycle by the cycle fan, go through the net belt, the moisture of the material were evaporated when the material adsorb the heat from the hot air. At the same time, the temperature come down, and the temperature of the air increased. The humid air was get out by the discharging fan. And the most hot air were still in the drying chamber, and cycle used.

Heating source

1  ModelXH-2000000Kcal Coal Fuel Hot Air Fuenace

2  Output of the heating capacity200×10⁴kcal/h

3  Temperature of the hot air80-120

4  Consumption of the coal333kg/h

5  Thermal efficiency.≥95%

6  Add   Automatical feeding and disacharging  1piece    Burner 1piece    Feeding coal device 1piece

7  Hot air pipeΦ1000  1piece   δ2  A3Temperature keeping

8  Blower of the hot air4-72  12C  45KW  1set 

Drying machine

1  ModelDWF₃2-30

2  Layer3

3  Wide of the belt2m20mesh SUS304

4  Length of the drying parts30 m×3

5  Quantity of the unit15×3

6  Drying temperature80-120

7  Drying intension1000-1300kg/h

8  Thickness of the spread raw material30-50

9  Time of the drying 1.5-2.5h

10Hot cycle fan4-72-5.5A  3KW   45sets

11Fan of the discharing damp4-72-6A  4KW  6sets

12Drive fan3KW   3sets   Electromagnetism timing

13Dimension of the main machine33000*2350*3600

14Capacity of the whole equipment213KW/set

    Consumption of the electricity:180Kw/h

List of the main equipment

1Bottom frame of the main machine12#Channel steel  A3  Jointing

2Framework of the main machine12#Channel steel  A3 Jointing

3Temperature keeping layerδ50   aluminium silicate

4Inner wall of the main machineδ1  zincification

5Outer wall of the main machineδ1.2  A3  Painting

6Net belt 20mesh  SUS304  3pieces

7Feeding hopper 1piece   SUS304

8Stay barΦ18×2  A3 zincification

9Main axis  7pieces    45steel

10ChainP=50.8  2120HP  A3