Wastewater sludge QJ-P Hollow Blade  conductive style drying machine(Hollow paddle dryer, Hollow impeller dryer, Hollow paddle drying machine , hollow paddle drying Equipment

Working Principles:

Hot water, steam or thermal oil can be used as the thermal medium.Thermal medium is divided into two paths,

and goes respectively into the dryer jacket and the shafts.

The body and the shafts are heated simultaneously, and material is heated indirectly.The material is heated and dried in a high efficiency due to the large area released by the continuously rotating shafts and the jacket.Dry material is discharged from the outlet of the dryer, while the evaporated moisture is taken out of the dryer by the drought fan, and then is treated in the dust collector. Exhaust air is vented.

Features
1. The heat consumption of blade is low: No heat carried out by the air because of indirect heating; there's no heat insulation layer with the exterior wall of the dryer. It consumes 1.2 kg of steam to evaporate 1kg of water for to drying slurry state of material.

2. The cost of the blade dryer is low: The unit effective volume has very large heat transferring surface, so the processing time is shorted, the size of the equipment becomes small. The building area and place are sharply decreased.

3. The range of material to be processed is wide: Heat sensitive material and the materials to be processed under high temperature might be processed with different heating media. The normal media are: steam, thermal oil, hot water and chill water. It might be continuous or batch operation, widely used in many areas.

4. The pollution is less: Without any carrying air, very little powder is carried out. The solvent evaporated is very few, it easy to be processed. For the material that might cause pollution or the solvent to be recovered, it might adopt sealed circulation.

5. The operation cost is low: 1hour/day/operator is enough for normal operation. Low stirring speed and reasonable structure, the worn amount is few, and the maintenance fee is low.

6. Steady operation: The material particles fully contact heat transferring surface, because of the special compressing and swell-stirring effect of the chock shaped blade. The difference of the temperature, humidity and mixing effect are very small in the different axial area, so to ensure the stability of process.