The correct operation steps of the stainless steel sugar coating machine must strictly follow the following process:
1、 Preparation before operation
1. Environmental and equipment inspection
Place the equipment in a ventilated and clean area (pharmaceutical production must comply with GMP workshop standards), and check if the power cords and grounding devices are intact.
Confirm that the sugar coating pot rotates clockwise without any abnormal noise, and that the lubricating oil level of the gearbox meets the standard (oil mark).
Cleaning and disinfection: Spray the inner wall, spray gun, and pipes of the sugar coated pot with 75% alcohol. New equipment needs to be tested by idling.
2. Preparation of materials and auxiliary materials
The tablet core/candy needs to be dry and crack free. The coating liquid (syrup, film liquid, etc.) should be mixed with viscosity according to the process requirements, filtered, and then filled into a spray gun liquid cup.
Adjust the hot air temperature (preheat syrup coating at 40-50 ℃, film coating set according to the material).
2、 Core operating procedures
1. Loading and parameter setting
Pour the ingredients evenly into the sugar coated pot, with a loading capacity not exceeding 2/3 of the pot's capacity.
Set speed: 20-40 revolutions per minute for pharmaceutical tablets, and can be appropriately reduced for candies or small pills to ensure that the material rolls in a "waterfall" shape.
2. Coating layer spraying
Start the main motor, turn on the air source of the spray gun (pressure 4-6kg/cm ²), adjust the atomization amplitude to ensure that the coating liquid evenly covers the surface of the material.
Layered spraying principle:
Pharmaceutical: First spray isolation layer → powder coating layer → sugar coating layer → coloring layer, and then spray the next layer after each layer is dried.
Food/Candy: Spray syrup or chocolate solution directly, and spray thinly in batches to prevent adhesion.
3. Drying and solidification
Turn on the blower and heating device (hot air at 50-70 ℃ is used for sugar coating, and cold air is required for chocolate coating to solidify), and continue to rotate until there are no water stains on the surface.
Pharmaceuticals need to ensure that the moisture content of the coating layer is ≤ the process standard, and food needs to form a crispy shell or glossy surface.
4. Polishing and discharging
Turn off the spray gun, add edible wax or polishing agent (such as Brazilian palm wax), and rotate at low speed for 5-10 minutes to improve glossiness.
After stopping the machine, turn out the spray gun bracket, tilt the pot to pour out the finished product, and sieve out the debris.
3、 Key points of safety and maintenance
1. Operating standards
Wear protective clothing and gloves throughout the entire process, and tie up long hair; It is strictly prohibited to put your hand into the pot while the equipment is running.
If there is a sudden abnormal noise or overheating, immediately cut off the power and have it inspected by professional personnel.
2. Cleaning and maintenance
At the end of each batch: Rinse the sugar coated pot with drinking water until there are no residues, clean it again with purified water (pharmaceutical requirements), and dry it with a soft cloth.
Regular maintenance: Replace the gearbox oil every quarter, check the wear of the motor carbon brush, and prevent aging of the electrical circuit.