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HG Series Cylinder Scratch Board Dryer

HG Series Cylinder Scratch Board Dryer

HG Series Cylinder Scratch Board Dryer is a kind of rotating continuous drying equipment with internal heating conducting function. The material film will stick to the bottom of the rotating cylinder. The heat is transferred to the internal wall of the cylinder through piping system and it will be conducted to the external wall and material film. The moisture of the wet material film will be easily evaporated and the dried material will be scraped from the cylinder surface and transfer to the packing area by the screw conveyor.

Detail

WORKING PRINCIPLE

  HG Series Cylinder Scratch Board Dryer is a kind of rotating continuous drying equipment with internal heating conducting function. The material film will stick to the bottom of the rotating cylinder. The heat is transferred to the internal wall of the cylinder through piping system and it will be conducted to the external wall and material film. The moisture of the wet material film will be easily evaporated and the dried material will be scraped from the cylinder surface and transfer to the packing area by the screw conveyor.

 

APPLICATION

  This dryer is suitable for drying liquid raw material or sticky material in chemical industry, dyestuff industry, pharmaceutical industry, foodstuff industry, and metallurgy industry, and etc.

 

FEATURES

  1.High heat efficiency: The heat transfer of the cylinder dryer is heat conduction and the conducting direction keeps identical with operation circle. Most of the heats can be used for evaporation of wet materials on the wall the cylinder. The efficiency can reach 70-80%.

  2.Flexible operation elasticity and wide application: Various drying factors of the dryer can be adjusted, such as concentration of the liquid, thickness of material film, temperature of heating medium, rotating speed of the drum, and etc. These factors can change drying efficiency of the cylinder dryer. As these factors have no interrelations each other, it brings great convenience to dry operation and makes it applicable to dry different materials and meet different production requirements.

  3.Short drying period: The drying period of materials is normally 10 to 300 seconds, so it is suitable for heat-sensitive materials. It also can be pressure reducing operated if it is put in vacuum vessel.

  4.Fast drying rate: The thickness of the material film on the wall of the cylinder is very thin. Normal, thickness is 0.3 to 1.5mm. The directions of heat and mass transmittal are identical so the evaporation strength on the surface of material film can be 20-70 kg.H2O/m2.h.

 

TECHNICAL PARAMETERS

Item

Model

Cylinder   Size

D*L(mm)

Effective Heating

 Area(m²)

Drying Capacity
  (kg.H2O/m2.h)

Steam Consumption

(kg/h)

Power

(kw)

Dimension

(mm)

Weight

(kg)

HG-600

Φ600×800

1.12

40-70

100-175

2.2

1700×800×1500

850

HG-700

Φ700×1000

1.65

60-90

150-225

3

2100×1000×1800

1210

HG-800

Φ800×1200

2.26

90-130

225-325

4

2500×1100×1980

1700

HG-1000

Φ1000×1400

3.30

130-190

325-475

5.5

2700×1300×2250

2100

HG-1200

Φ1200×1500

4.24

160-250

400-625

7.5

2800×1500×2450

2650

HG-1400

Φ1400×1600

5.28

210-310

525-775

11

3150×1700×2800

3220

HG-1600

Φ1600×1800

6.79

270-400

675-1000

11

3350×1900×3150

4350

HG-1800

Φ1800×2000

8.48

330-500

825-1250

15

3600×2050×3500

5100

HG-1800A

Φ1800×2500

10.60

420-630

1050-1575

18.5

4100×2050×3500

6150

Notes: We can design double cylinder dryer with feeder on the top based on customer’s requirements.

 

Installation:

  This dryer has to be installed in accordance with the general layout. The ground should be smooth, and the steam inlet should be installed with pressure gauge and safety valve. Make sure all flanges are securely connected.

 

Commissioning:

  - Observe and make sure the main cylinder is rotating correctly.

  - Observe and make sure the rotation of the cylinder and various transmission components is flexible.

  - Observe and make sure the steam inlet and outlet are connected and the pressure gauge is within the operating range.

  - The operation of the main cylinder shall be stable after motor started. The material shall be fed into the dryer after temperature rises and then adjust the motor speed in order to control the uniformity of the film and the final moisture content of the material.

  - The finished product shall be discharged when starting the auger motor. The auger motor speed shall be adjusted according to the conveying capacity of the finished product


Maintenance:

  - Schedule regularly checks for the rotation flexibility of rotating parts and check if there is any jamming.

  - The sprockets and other components shall be regularly greased.

  - Schedule periodic calibration for pressure gauges and other measuring devices.

  - The V-belt transmission is a wear part and it should be replaced regularly.

  - The maintenance of motor and reducer should refer to its own manual.

 

TYPICAL PROJECTS