Wet mixing granulator is a commonly used equipment in the pharmaceutical, food, chemical and other industries, used to make powdered materials into granular form. According to different working principles and structural characteristics, wet mixing granulators can be divided into various types, which will be introduced one by one below.
Classification of Wet Mixing Granulators:
1. Flat wet mixing granulator: Flat wet mixing granulator is a very common type and an early developed granulation equipment. It is mainly composed of a tablet, a chassis, gears, motors, etc. During work, powdered materials and binders are mixed with water and transferred into a flat plate, where they are thoroughly mixed through the rotating motion of the plate. Afterwards, the mixed material is dispersed towards the surroundings by centrifugal force, and then compressed by force to form particles.
2. Scraper wet mixing granulator: Scraper wet mixing granulator is a new type of granulation equipment, which has higher production efficiency and granulation quality compared to flat wet mixing granulator. The main feature of this device is the addition of a set of scrapers on the tablet, which achieves a more uniform mixing and extrusion effect through the action of the scrapers, forming more regular particles.
3. Boiling bed wet mixing granulator: The boiling bed wet mixing granulator is a device that uses the fluidization effect of particles in high-speed airflow for granulation. During operation, materials are sprayed into the equipment through the feeding port and heated by the bottom heater, causing the materials to quickly evaporate and form an airflow. Then, under the action of high-speed airflow, the material boils, constantly flips and collides, ultimately forming particles.
4. spray drying wet mixing granulator: spray drying wet mixing granulator is a device that atomizes liquid materials into small particles through a spray, and then dries them through a heater to form particles. It is mainly composed of feed pump, spray, heater, cyclone separator, etc. During operation, liquid materials are pressurized into the spray through the feed pump, and then the spray atomizes the materials into small particles through the nozzle. The small particles are heated and dried by the heater, and finally form particles.
To sum up, wet mixing granulators can be divided into flat wet mixing granulators, scraper wet mixing granulators, fluidized bed wet mixing granulators and spray drying wet mixing granulators according to different working principles and structural characteristics. These devices are widely used in industries such as pharmaceuticals, food, and chemicals, playing an important role in transforming powdered materials into granular form. By selecting a suitable wet mixing granulator and combining it with specific production requirements, the efficiency and quality of granulation can be improved to meet the production needs of different industries.