Sawdust Dryer

Composition and Application of Sawdust Dryer

Sawdust dryer can use spiral conveyer to continuously feed the powdery and wet sawdust into the drying pipe. Under the conveyance and scattering of high-speed air flow, the water containing in the wet materials will evaporate, thus gaining powdery or particle dry products. Sawdust dryer is mainly composed of air heater, feeder, airflow drying pipe, cyclone separator, fan, etc. Sawdust dryer is widely used in straw briquette fuel, charcoal machinery, wood pellet fuel, sawdust briquettes, agricultural engineering and other industries.

Working Process of Sawdust Dryer

The sawdust has characteristics of high humidity and high adhesion, so, during the drying process, the wet sawdust is fed into the sawdust equipment via the belt conveyor, and the block wet sawdust after quickly thrashing will experience four working areas after entering the negative pressure dryer: 

1. Guiding area, wet sawdust will rapidly evaporate large amounts of water after entering into this area and contacting with high temperature negative pressure hot air, so wet sawdust will be imported to next work area without forming a bond. 

2. Clean-up area, wet sawdust material is in curtain state in this area, so materials are easily to bond when they fall down, the cleaning device in this area will quickly clean out the sawdust bonded cylinder wall and break block sawdust to increase the heat exchange area and improve the drying rate. 

3. Inclined lifting plate area, this area is a low-temperature drying area, in which area the sawdust is in a loose state with low moisture to avoid bonded phenomenon, the finished product will enter into the final discharging area after heat exchanging. 

4. Discharging area, the finished materials scroll to the discharging port and complete the entire drying process in this area.