How to choose a planetary centrifugal mixer（1）?

The importance of planetary mixers as key mixing equipment is self-evident in today's industrial production and various laboratory applications. The planetary centrifugal mixers on the market are mainly divided into two types: contact type and non-contact type.

There are many differences in mixing performance between contact planetary centrifugal mixers and non-contact planetary centrifugal mixers. Let's take a look together.

Mixing uniformity

Contact type: The agitator rotates at high speed while revolving around the axis of the kettle body, causing the material to undergo complex movements inside the kettle body. It is subjected to strong shear and rubbing, and can fully stir the material to achieve a highly uniform mixing effect without any mixing dead corners, ensuring that every part of the material can be fully mixed and improving product quality consistency.

Non contact: By simultaneously rotating and revolving, uniform mixing can be achieved without layering, allowing different components of slurry and powder to be fully mixed evenly. For high viscosity materials and multi-component systems, the mixing uniformity is good, which can avoid the problem of insufficient local mixing that may occur due to contact mixing.

Mixing efficiency

Contact type: Its unique planetary motion allows the mixing blades to cover a larger mixing range, completing the mixing task in a shorter time. The mixing efficiency is usually several times that of ordinary mixers, greatly improving production efficiency and suitable for large-scale production and high efficiency requirements.

Non contact mixing: With fast mixing speed, it can achieve uniform mixing of materials in a short period of time, improve production efficiency, and avoid efficiency reduction caused by friction, adhesion, and other problems between materials and mixing components in contact mixing. It is especially suitable for processes that require strict mixing time.

Adaptability to materials

Contact type: With a wide range of applications, it can be used for most materials with medium to high viscosity and low solid content. It can handle various processes such as mixing, reaction, dispersion, dissolution, and tempering of solid+solid, solid+liquid, and liquid+liquid materials. When combined with various agitators and other auxiliary devices, it can further expand its application range and meet the mixing needs of different industries and materials.

Non contact: Suitable for various types of materials, especially for high viscosity and easily adhesive materials such as glue, silver paste, ink, grease, paste, etc., it has good stirring effect, can effectively avoid material residue and waste, and is also suitable for occasions with high requirements for material purity, without introducing impurities due to contact stirring.

Material protection performance

Contact type: By reasonably controlling parameters such as mixing speed, mixing time, and the shape of the mixing blades, the shear force generated during the mixing process can be kept within a certain range, reducing damage to sensitive material structures and protecting the original properties and quality of the material.

Non contact: There are no stirring blades, which do not directly shear or squeeze the material. It can achieve stirring and mixing under mild conditions, maximizing the protection of the physical and chemical properties of the material. It is particularly suitable for stirring materials such as biologics and polymer materials that are sensitive to shear forces.

Equipment maintenance cost

Contact type: The structure is complex, usually achieved through planetary gear transmission to achieve planetary motion. The transmission box structure is complex, difficult to maintain, and once a fault occurs, it is difficult to repair, requiring professional technicians for repair. At the same time, the cost of replacing parts is also high.

Non contact: No need to clean and sweep the blades like ordinary propeller mixers, no vulnerable parts such as propellers, reducing equipment failures and maintenance workload caused by component wear and corrosion, lowering maintenance costs and downtime, and improving equipment stability and reliability.

After reading it, do you know how to choose? If you have any questions, please feel free to consult SMIDA.