1. Overview of solid beverage raw materials and mixing process
Solid beverage raw materials usually include powdered sugar, plant extracts, trace elements (such as vitamins and minerals), flavors, pigments, etc., which need to be evenly distributed through the mixing process. The production process is: batching→ mixing→ granulation/tableting→ drying → packaging. Among them, the mixing link directly affects the uniformity and stability of the product, which is one of the core processes.

2. The main problems in the mixing process

Trace element add:
The amount of trace elements added is small (usually less than 1%), and the traditional mixing equipment is easy to lead to high local concentration or ununiform distribution, which affects the quality of the product. For example, when salt granules (specific gravity 1.4g/ml) are mixed with chili powder (specific gravity 0.25g/ml), light powder is easy to be suspended, and heavy powder sinks, forming a stratification phenomenon. Ultrafine powder or hygroscopic raw materials are easy to form agglomerates due to static electricity or moisture, and it is difficult to completely disperse them with traditional mixing.

3. Analysis of commonly used mixing equipment in the solid beverage industry

Traditional equipment such as double cone mixer and V-type mixer rely on gravity diffusion mixing, the loading rate is less than 50%, the mixing efficiency is low, and it is difficult to solve the problem of light powder suspension. Although the three-dimensional mixer can improve the uniformity, it has limited effect on the treatment of ultrafine powder.

4. The solution of the dual motion mixer

① The dual-motion mixer solves the mixing problem through the dual action of the barrel rotation and the independent movement of the internal blades: forced wrapping mixing；

② The barrel rotates in the same direction as the blade but at different speeds (the blade speed is twice that of the barrel), and the floating light powder is forced into the heavy powder to achieve deep penetration. High loading rate and shear force；

③ The loading rate can reach 80%, reducing the suspension space of light powder; The blades shear and stir the material to effectively break up the agglomerates. Dynamic mixing anti-segregation；

④ The continuous movement avoids the secondary stratification of the powder due to the difference in specific gravity, which is especially suitable for high-precision mixing needs such as trace elements. Wide adaptability；

⑤ By adjusting the rotational speed and blade structure, it is possible to handle tasks such as poor flowability, ultrafine powders (particle size ≤ 10 μm), and nanomaterial mixing.

5. Summary 

The dual-motion ® mixer significantly improves the mixing uniformity (up to 99.5%) and shortens the mixing time by 30%-50% through the innovative dual-motion mode. Its technical characteristics perfectly match the core needs of the solid beverage industry for high uniformity, high efficiency and low losses, and have become the preferred solution for mixing equipment in this field.