Three cylinder dryer
Production capacity (t/d): 63.5-268.0
Floor area (㎡): 8*18-10*22
Application range: suitable for straw, distiller's grains, corn husks, wood chips, etc.
Heat source configuration: suitable for multiple fuels
Environmental protection configuration: supporting the use of multi-stage dust removal equipment, which can reach environmental protection standards

Product Introduction
　 　 Committed to the research of the three-cylinder dryer. The three-cylinder dryer is a newly developed dryer that combines the principles of a rotary cylinder dryer with an inclination angle and an airflow dryer. After continuous improvement, it can not only handle low-viscosity high-moisture materials, but also high-viscosity high-moisture materials. It changes the bulk of the rotary drum dryer and the bulky disadvantages of the airflow dryer. It has the advantages of small size, high thermal efficiency, light weight, wide applicability, and flexible temperature control. This machine is widely suitable for drying all kinds of powder, block, flake and various slag materials. Such as ore, mineral powder, iron ore, brewer's grains, alcohol grains, pomace, medicine residue, sauce grains, sugar residue, starch residue, wood chips, pasture, etc. For opening up new resources, responding to the national call for energy conservation and emission reduction; reducing environmental pollution has good results.

working principle
The material enters the inner layer of the rotary drum from the feeding device to achieve downstream drying. The material is continuously picked up and scattered under the inner layer of the copy plate to realize heat exchange in a spiral travel mode. The material moves to the other end of the inner layer and enters the middle layer. In counter-current drying, the material is continuously raised in the middle layer, showing a two-step forward and one-step travel mode. The material in the middle layer not only fully absorbs the heat emitted by the inner drum, but also absorbs the heat of the middle drum, and at the same time extends the drying Time, the material reaches a dry state here. The material travels to the other end of the middle layer and falls into the outer layer. The material travels in the outer drum in a rectangular multi-loop manner. The material that achieves the drying effect is quickly discharged out of the drum under the action of hot air. The wet material that does not achieve the drying effect cannot be fast due to its own weight. As it progresses, the materials are fully dried in this rectangular copy board, thus completing the drying purpose.

Performance characteristics
1. The structure of the three-cylinder dryer adopts the sleeve type to make the material dry quickly.
2. The cylinder is designed to be self-insulating, so that the thermal efficiency can reach more than 80%.
3. Exquisite product structure and stable operation.
4. The drying effect is good, and the coal consumption per ton of dry material is less than 8kg.
5. Kerosene and gasoline can be used as fuel. It can dry bulk and powdery materials below 20mm.
6. Compared with the single-cylinder dryer, the floor space is reduced by about 50%, the civil construction investment is reduced by about 50%, and the power consumption is reduced by 60%.
7. The required final moisture index can be easily adjusted according to user requirements.
8. The air outlet temperature is low and the dust removal equipment can be used for a long time.
9. There is no need to rotate large and small gears, and a tug is used to rotate.
10. The discharge temperature is lower than 60 degrees. Can produce packaging continuously.


The three-pass dryer is an improved high-efficiency and energy-saving product based on the single-cylinder rotary dryer. After being applied by many enterprises and industries, good results have been achieved. The rotary three-reflow dryer improves the internal structure of the original single-cylinder dryer, increases the pre-drying of the wet material before entering the machine and extends the drying time of the wet material in the machine, plus sealing, moisturizing and reasonable supporting measures Compared with the original single-cylinder dryer, the production capacity of the dryer is increased by 50-80%, the evaporation intensity per unit volume can reach 120-180kg/m3, and the standard coal consumption is only 6-8kg/t. Its advanced technology, reasonable operating parameters, simple and feasible operation.

　　The working principle of three-pass dryer

The material enters the inner layer of the rotary drum from the feeding device to achieve downstream drying. The material is continuously picked up and scattered under the inner layer of the copy plate to achieve heat exchange in a spiral manner. The material moves to the other end of the inner layer and enters the middle layer. When countercurrent drying is performed, the material is continuously raised in the middle layer, showing a two-step forward and one-step travel mode. The material in the middle layer not only fully absorbs the heat emitted by the inner drum, but also absorbs the heat of the middle drum, and at the same time extends the drying Time, the material reaches a better dry state here. The material travels to the other end of the middle layer and falls into the outer layer. The material travels in the outer drum in a rectangular multi-loop manner. The material that achieves the drying effect is quickly discharged out of the drum under the action of hot air. The wet material that does not achieve the drying effect cannot be fast due to its own weight. As it progresses, the materials are fully dried in this rectangular copy board, thus completing the drying purpose.

Main features of three-pass dryer

　　 1. The final moisture content is low, and the final moisture content of the material is guaranteed to be below 0.5%. It is a product of the dry-mixed mortar and slag powder production line.

　　2. The self-insulation thermal efficiency of the cylinder is as high as 70% or more (the thermal efficiency of the traditional single-cylinder dryer is only 35%), and the thermal efficiency is increased by 35%.

　　3. Wide range of fuels, which can adapt to coal, oil and gas. It can bake blocks, pellets and powder materials below 20mm.

　　 4. Civil construction investment and low power consumption. Compared with the single-cylinder dryer, it takes about 50% less land, civil construction investment is reduced by about 50%, and power consumption is reduced by 60%.

　　 5. The required final moisture index can be easily adjusted according to user requirements.

　　6. Low air outlet temperature and long use time of dust removal equipment.

　　7. There is no need for large and small gear transmission, and supporting wheel transmission is adopted.

　　 8. The discharge temperature is lower than 60%, and the packaging can be produced continuously.
Molding sand, slag, cinder, mortar, yellow sand, clay, iron powder,

　　 Three-pass dryer application range

　　 Three-cylinder dryer is mainly used to dry granular materials within a certain humidity and particle size range. Such as yellow sand, molding sand, slag, coal slag, small-size clay, and other small-particle materials that are not afraid of high temperature and smoke dust. The moisture content of the dried material can reach below 1-0.5%. This machine is widely used in dry-mixed mortar, yellow sand, cement plant slag, clay, coal, mixture, iron powder, building materials, chemical industry, casting and other industries to provide raw materials.