Powder mixer is a process of uniformly distributing particles with different physical and chemical properties on a macro scale by mechanical or fluid methods. In short, the non-uniformity of two or more solid powder materials is minimized. With the rapid development and industrial application of new materials, the uniform mixing of powder composites becomes more and more important.
1) Working principle of three-dimensional mixer powder mixer: the loaded barrel is driven by the driving shaft to carry out repeated translation, rotation, rolling and other composite movements to promote the movement of materials along the circumferential direction. Along the diameter of the barrel. The three-dimensional composite movement along the axial direction and axial direction realizes the mutual flow, diffusion, accumulation and doping of various materials, and achieves the purpose of uniform mixing.
▲ three dimensional mixer
Advantages of three-dimensional mixer: there is no dead corner in the barrel.
Disadvantages: low loading rate, usually no more than 60%; For ultra-light powder and ultra-fine powder, it is not easy to mix uniformly, and it is not easy to float on the cylinder, and it is difficult to achieve sufficient and uniform mixing between particles at the micro level.
（2） Working principle of V-type mixer powder mixer: Based on the principle that the two cylinders of the mixer are unequal in length and arranged asymmetrically, when the mixer rotates, the materials change from decomposition to combination, and from combination to decomposition, so as to promote the horizontal communication of materials. Each rotation of the lateral force makes a part of the material flow from one cylinder to another, so that the materials are mixed horizontally and radially, and decomposed and combined with each other to achieve a uniform mixing effect.
Advantages of v-mixer: better mixing effect can be obtained when mixing materials with good fluidity and similar physical properties.
Disadvantages: when the physical properties of mixed powder materials are large, it is usually impossible to obtain an ideal mixture; High energy consumption; The impact and friction between particles are large, and the basic characteristics of powder composition are easy to change, For example, the particle size becomes smaller and the particle shape changes.
（3） Working principle of double cone mixer powder mixer: add powder to the double cone cylinder. With the continuous rotation of the cylinder, the powder is a complex impact movement in the container to achieve uniform mixing.
Advantages of double cone mixer: it can realize rapid mixing between powders.
The disadvantage is that when the speed is too slow, the material is easy to layer, can not be mixed quickly and effectively, and is easy to form spherical agglomerates.