what is the working principle of a sawdust airflow dryer?

A sawdust airflow dryer, also known as a hot air pulse type dryer, is a type of drying equipment commonly used for drying sawdust.
The working principle of the sawdust airflow dryer is based on the theory of convection heat transfer. It uses hot air as the drying medium, which is supplied by a blower, and passes through the drying cylinder. The material to be dried is fed into the dryer through a feed inlet and moves with the hot air flow inside the dryer. As the hot air passes through the material, it absorbs the moisture, and the moist air is then discharged through an exhaust outlet. The dried material is collected at the discharge end of the dryer.
The airflow dryer consists of a heating furnace, a drying cylinder, a blower, and other auxiliary equipment. The heating furnace provides heat energy for the hot air, and the blower supplies the hot air to the cylinder. The drying cylinder is designed with a spiral blade, which can lift the material and constantly turn it over, promoting uniform drying and high efficiency.

In conclusion, a sawdust airflow dryer is a type of drying equipment commonly used for drying sawdust. Its working principle is based on the theory of convection heat transfer. It uses hot air as the drying medium, which is supplied by a blower, and passes through the drying cylinder. The material to be dried is fed into the dryer through a feed inlet and moves with the hot air flow inside the dryer. The dried material is collected at the discharge end of the dryer. The sawdust airflow dryer has several advantages, including rapid drying, continuous operation, compact structure, and environmental protection, and energy saving.