Wet material from the top feeding port into the spiral bed, in the circumferential excitation force and gravity, the material along the spiral bed from top to bottom for jumping movement until the bottom; at the same time, clean hot air from the bottom of the spiral bed into the distribution of the material in the bed for adequate heat and mass transfer, discharged by the top of the moisture outlet. Thus the material achieves the purpose of drying.

Equipment features

The hot air passes through the material layer several times and flows in the opposite direction with the material, so that the heat exchange is sufficient and the heat efficiency is high.
Compact structure and small floor space.
The residence time of materials in the bed can be adjusted, convenient operation.
While the material is moving in a circle from bottom to top along the spiral bed, it also jumps, which increases the contact between the material and the hot air and enhances the drying effect.
Continuous feeding and discharging is suitable for assembly line operation, and it is easy to meet the ‘GMP’ standard, which can replace the traditional box drying.
There is no damage to the surface and shape of the material, which not only ensures the roundness of the pills, but also greatly reduces the breakage rate of the pills.

Scope of application

The drying equipment is mainly applied to the drying of traditional Chinese medicine pills; it can also be applied to the drying of granular, short strip and spherical materials in the industries of chemical industry, constraints, foodstuffs, plastics, building materials and feedstuffs.

Technical Parameters