The water chestnut coating machine is a commonly used pharmaceutical equipment for drug coating. It wraps drug particles or solid powders in a layer of shell through rotating cylinder, spray, drying and other steps to improve taste, protect drugs, avoid irritation of gastrointestinal tract and other functions.
The water chestnut coating machine achieves uniform coating of the product surface through the following steps and mechanisms:
1. Drug pretreatment:
♦ Before coating, it is necessary to pre treat the drugs that need to be coated, such as adjusting the humidity and particle size of the drugs, to ensure that the drugs can adhere evenly to the coating material.
2. Coating material input:
♦ Put the coating material (usually starch, gelatin, etc.) into the hopper of the water chestnut coating machine.
♦ By controlling the speed and rotation angle of the hopper, the coating material can be evenly scattered onto the surface of the drug.
3. Rotating medication:
♦ The medicine is rotated in the water chestnut coating machine, which can be realized through the cooperation of the rotating barrel, spray and fan inside the equipment.
♦ The clockwise rotation of the rotating bucket causes the medicine to roll inside the pot, achieving the effect of material rolling and rubbing up and down inside the pot, thereby forming a uniform layer of coating material on the surface of the medicine.
4. spray coating:
♦ While the drug rotates, the water chestnut type coating machine sprays solvent (usually containing coating materials and possible pigments and drug ingredients) to the drug surface through a spray.
♦ The spraying of solvent evenly moistens the coating material and enables better adhesion to the drug surface.
5. Drying and curing:
♦ After completing the coating of the drug, the water chestnut type coating machine will undergo ventilation drying or hot air drying to quickly remove excess moisture on the surface of the drug.
♦ This step allows the coating material to quickly dry and solidify, forming a strong coating film on the surface of the drug.
6. Equipment features:
♦ The novel design of the water chestnut coating machine simulates the growth characteristics of water chestnuts, allowing drugs to form complex trajectory movements in the coating barrel, thereby ensuring the uniformity of coating.
♦ The hot air system, liquid and gas supply system, etc. of the equipment have been carefully designed to ensure temperature and humidity control during the coating process, as well as uniform spraying of the coating liquid.
7. Operation and Control:
♦ The water chestnut coating machine is usually equipped with an advanced control system, which can achieve precise control of coating speed, temperature, spray volume and other parameters.
♦ Operators can adjust relevant parameters based on product characteristics and requirements to achieve the best coating effect.
Through the above steps and mechanisms, the water chestnut coating machine can achieve uniform coating on the surface of the product, improving the quality and stability of drugs or food.