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As we all know, the nature of the pharmaceutical industry is quite special, and the quality requirements for pharmaceutical equipment are also high. Any mistake in one link may lead to quality problems and serious consequences.
A mixer is a machine that uniformly mixes two or more materials by mechanical force, gravity, or the like. Hybrid machines are widely used in various industries and daily life. Commonly used mixers are divided into four categories: gas and low viscosity liquid mixers, medium and high viscosity liquid and paste mixing machines, thermoplastic material mixers, and powdered and granular solid materials mixing machines.
Gas and low viscosity liquid mixers are characterized by a simple structure and no rotating parts, low maintenance and repair, and low energy consumption. This type of mixing machine is divided into four types: airflow mixing, pipe mixing, jet mixing and forced circulation mixing.
Mixer parts are mainly made of wear-resistant alloy materials, including high-speed mixing scraper, mixing fin, wear-resistant lining, mixing arm, mixing shovel, planetary shovel, mixing coulter, stirring rod, mixing crucible, etc. Mixing machines generally have a strong shearing action.
Thermoplastic material mixing machines are mainly used for mixing thermoplastic materials (such as rubber and plastics) with additives; powdered and granular solid materials mixing machines are mostly intermittent operations, and also include machines that combine mixing and grinding, such as rim machines.
The moving parts of the mechanical agitator also shear the liquid when it is rotated. The liquid is also subjected to shearing action when flowing through the wall and various fixing members installed in the container. These shearing actions will cause many Local eddy current diffusion.
For liquids of different density, composition, and incompatibility, the shearing action caused by the agitation and the strong turbulence shred the dense liquid into small droplets and uniformly disperse it into the main liquid.
Use and classification of mixers in the pharmaceutical industry
Zyzhan guide: Mixer can mix a variety of materials into a homogeneous mixture, such as cement, sand, gravel and water mixed into concrete wet materials; can also increase the material contact surface area to promote chemical reactions; can also accelerate physical changes For example, a granular solute is added to the solvent, and the dissolution and mixing can be accelerated by the action of the mixing machine.