Working
How Does Air Flow Dryer Work?
Air flow dryer is based on the principle of instantaneous drying of air flow. And the powder/chip/granular wood of wet shavings sawdust is continuously added to the drying pipe by the screw conveyor.
In the transportation and dispersion of the high-speed hot air flow, the moisture in the wet material is evaporating to obtain the dried wood materials.
System
Air Flow Dryer Structure Feature
Air flow dryer consists of blower, heater, feeder, dryer, cyclone separator, pulse bag filter, induced fan, and supporting equipment.
- The structure is compact and firm, with few wearing parts and convenient maintenance and inspection.
- The entire process adopts air-solid co-current operation to reduce the final product outlet temperature.
- Simple process, easy operation, stable operation, and wide application range, especially for heat-sensitive materials. Besides, the operating temperature is very low, only about 50 °C, even if longer dwell time will not damage to the material.
- Reasonable distribution, and low requirement for material particle size distribution.
- It is convenient to change the material type. When changing the dried materials, stopping to feed the wet materials, and the air blows for 15-30 minutes. Hence, it can save the complicated bed-clearing, improve the yield and reduce the labor intensity.
- Only the minimal maintenance cost, due to few mechanic transmission components. The annual repair cost is no more than 2% of the investment cost.
- Air flow drying machine is equipped with humidity-control temperature meter, which can directly see the moisture of the dried material.
- Automatic feeding machine adjusts the feeding speed according to the different raw materials moisture, so that the dryer achieves the best drying effect.
Application
Air flow dryer is widely used in wood material drying industry, and is preparing dried materials for wood pallet block production.
What are the raw materials that air flow dryer can dry?
Sawdust, wood shavings, wood chips, wood materials, rice husks, cotton stalks, and so on, which are the raw materials (less than 3 mm in diameter, less than 5 mm in length).
