Coating machines and packaging equipment are core downstream equipment in NPK fertilizer production lines. The coating machine enhances the slow-release effect of the fertilizer, while the packaging equipment handles quantitative packaging of the finished product. Their proper operation and maintenance directly impact product quality and production efficiency.
Key Points for Proper Operation: Before starting the coating machine, check the spraying device and drum for proper functioning. Prepare a qualified coating solution and preheat the equipment to 80-90℃. Feed qualified granules at a uniform speed, controlling the spraying speed of the coating solution to ensure even coating. Observe the coating layer thickness during NPK fertilizer production line operation and fine-tune parameters as needed. Before starting the packaging equipment, calibrate the weighing system, check the bag clamping and sewing devices for proper functioning, set the packaging weight, and after starting the equipment, feed the granules at a uniform speed, ensuring that the weight error of each bag does not exceed the standard range and that the bags are securely sewn without leakage.
Post-Production Maintenance Tips: After shutting down the coating machine, clean the inner wall of the drum and the spray nozzles of any residual coating solution to prevent clogging and corrosion. Regularly inspect the spraying device and replace worn parts. After each use of the packaging equipment, clean the residual material from the feeding port and weighing hopper, check the needles and threads of the sewing machine and the bag clamping device, and replace worn parts in a timely manner. Check the motors and bearings of both machines weekly, add lubricating oil, calibrate the packaging weighing system of the NPK fertilizer production line monthly, and conduct a comprehensive overhaul every quarter to ensure stable equipment operation and guarantee the coating effect and packaging quality of the finished fertilizer.