Schematic diagram of working principle of air energy drying equipment for Chinese herbal medicine

Integral and low-temperature type with circulating side air supply

Integral and low-temperature type with circulating upper air supply

Integral and low-temperature type with circulating rear air supply

Machine components:

1.Integrated machine with lateral air/rear air/upper air supply : it controls the start and stop bottom of the drying room, and controls the temperature, humidity and dehumidification time of the drying room. It also provides heat energy for drying materials.

2.Warehouse with polyurethane sandwich board: it provides heat preservation for materials in the drying room.

3.Fan wall: it provides wind energy for the materials to bring out the moisture in the materials, and it can bring out the heat energy in the mainframe to make the drying room heat up or cool down.

4.Air guiding wall: it guides the wind of the fan wall to the front end, so that the air volume before and after the drying room is consistent, which achieves the purpose of uniform drying.

The drying process is different depending on different Chinese herbal materials. Some Chinese herbal materials will lose their efficacy after a certain temperature. Therefore, it is very important to control the temperature during the drying process. The automatic controller of Shuntec dryer guarantees this requirement, we will take Morinda officinalis as an example to prove this function.

Morinda officinalis drying process:

1.Firstly, setting the initial temperature of the dryer at 60~65 for about 6-8 hours. At this time, Morinda officinalis has dried to the level of medium dryness, and it is easier to remove the wood heart of Morinda officinalis ( as the wood heart contains lead and is toxic, it must be removed).

2.Then, steaming the Morinda officinalis after removing the wood heart, install it with a sieve tray after steaming, and push it into the drying room again. At this time, the drying temperature is set at about 45-65°C, the humidity is about 20%, and the drying time is about 10 hours. After 10 hours, Morinda officinalis will be totally dried.

3.Finally, sending the processed Morinda officinalis to the cool cellar for proper storage. According to the pharmacopoeia, the water content of the semi-finished Morinda officinalis should below 15%, however, as the air in the south China is much more humid, the requirements are stricter than in the north China, that is the water content in the south China must be controlled at 10-11%.

Polyurethane foam insulation drying room

Use 100mm thick polyurethane, color steel plate or stainless steel plate inside and outside, and use 100mm thick polyurethane foam insulation at the bottom of the drying room

1.Less loss of pharmaceutical ingredients. The finished product after drying has natural color and good appearance；

2.saving operating cost, the average consumption of 1 kWh can dry 3-4 kg of water；

3.Accurate control. Using touch screen control, which can accurately control the temperature and humidity of the drying room；

4.Save labor cost, full-time technicians is no need for guarding the equipment.