1, BZJ series centrifugal granulation coating machine - equipment overview

The centrifugal granulation coating machine is mainly used for powder deposition method to prepare pellets. The material is subjected to the centrifugal force of the rotary table, the friction force and the buoyancy of the annulus gas, and is mixed with the sprayed atomized slurry, bonded, and aggregated to complete the mother and granulation. Centrifugal pelleting machine with several functions such as particle enlargement, pellet shaping (rolling round) and coating, referred to as pelleting machine. It mainly consists of a pot body, a rotating ground plate, a liquid supply system, a powder supply system, a control system, a pneumatic system, a heating system and a dust removal system. Widely used in pharmaceutical, food, chemical industry, blank pellet core, drug-containing pellets, multi-layered relief pellets, pellets with good hardness, high true sphericity, controllable pellet size, residual materials can be reused, conducive to coating PLC integrated control for operation.

The centrifugal granulation coating machine adopts a cylinder body and a turntable and uses a relatively moving scraper to stir and complete the granulation process. The scraper is used to remove the materials on the turntable and the cylinder body during the production process, and has strong versatility. Suitable for different materials, and according to different modes of operation, it can be spray granulated, and can be used for the coating operation of granules, pellets and tablets, and at the same time, for the materials bonded to the cylinder wall and the surface of the turntable or The finished product can be removed in time to ensure the cleaning of the equipment, thus ensuring the quality of granulation and coating, reducing equipment investment, saving investment and reducing energy consumption.

2, BZJ series centrifugal granulation coating machine - equipment principle
The powder material is affected by the centrifugal force of the turntable, the friction force and the buoyancy of the annulus gas. The friction and impact between the powder material and the toothed disc and the cylinder wall, and under the action of the wind, form the trajectory of the spiral rope; Spraying an appropriate amount of atomized slurry to mix, bond and aggregate to complete the functions of mother, granulation, particle enlargement, rounding, coating and the like.

2.1. Starting from the mother: refers to the process in which the powdery material enters into the pelletizing machine and contacts the atomized slurry under centrifugal motion to form particles of 0.18 mm-0.8 mm.

2.2. Amplification and granulation: It means that the above spherical masterbatch or square crystal nucleus is put into the pelletizing machine, and the atomized slurry is wetted and receives an appropriate amount of powder for adhesion and aggregation from d to Kxd to obtain high true sphericity. The process of larger particle size. The size of the pellets is generally d = 0.2 to 2.5 mm, and each magnification is K ≤ 2.7.

2.3. Pellet shaping (spheronization): The pellet is rounded in three-dimensional spiral rolling by the thrust of the rack on the centrifugal turntable, the centrifugal force of the turntable, the friction between the cylinder wall and the pellet.

2.4. Coating: refers to the process of adding a certain amount of finished pellets into a centrifuge and spraying an appropriate amount of atomized coating liquid to wrap the film layer on the surface of each particle. The thickness of the film layer can be between 0.05 and 0.1 mm.

3, BZJ series centrifugal granulation coating machine - performance characteristics

3.1. The whole machine adopts vertical closed structure, compact structure, small floor space, movable door composed of protective cover plate on the outer surface, smooth, neat, beautiful in appearance, easy to clean, convenient to disassemble. Multiple safety interlocks to protect the operator from moving parts.

3.2. The pipeline connection adopts quick-opening stainless steel joint which is easy to disassemble and clean. There is no dead angle in the pipeline to ensure that it can be drained when parking.

3.3. Integrate the functions of “starting mother”, “granulation” and “coating”. The coating amount of the powder is automatically controlled, and the temperature in the bed is stable without splashing;

3.4. The pellets are in the state of pan-pill in the machine, with special spoiler and spoiler baffle to improve the material trajectory. The obtained pellets have high true sphericity, the surface is dense and smooth, and the components are evenly distributed; .

3.5, short production time, high yield; machine with safety interlock and overload protection device; process gas pipeline inlet has a terminal filter, pressure display before use point, easy to operate;

3.6, the granulation chamber can be cleaned with hot water, optional in-place cleaning (CIP), atomizer (spray gun) of the liquid supply system, transfer pump (peristaltic pump), liquid storage container and conveying pipeline, for powder supply The system's storage barrel, feeding screw and other components are easy to remove and wash.

3.7. The control system adopts PLC display and control, touch type LCD control panel, and the inverter adjusts the speed steplessly. The interlock protection measures are perfect and can dynamically reflect and control the main process. It can flexibly set multiple operating parameters on the touch screen and change operating parameters; it can display setting parameters, actual working parameters and statistical data to ensure good process operation and product quality reproducibility.