[Chinese Packaging Network News] The advantages and principles of quantitative packaging scales, structure, and importance. Quantitative packaging scales have become a critical component in the modern food packaging industry, especially in state-owned grain reserve warehouses. In recent tenders organized by the State Grain Administration, many units have invested in these scales due to their significant impact on operational efficiency and economic benefits. As such, it is essential for grain reserve operators to understand the proper debugging and maintenance of these systems. This knowledge not only ensures smooth operations but also enhances the overall performance of the warehouse. The use of quantitative packaging scales has proven to be highly effective, contributing to improved production efficiency and cost savings. As a result, these scales have played a vital role in boosting the economic value of the food packaging sector. Basic Working Principle When a quantitative packaging scale enters automatic operation mode, the weighing control system activates the feeding mechanism and begins the process. The feeding device operates in both fast and slow modes. Once the material reaches the fast feeding set point, the system switches to slow feeding to ensure precision. When the target weight is achieved, the feeding door closes, completing the dynamic weighing phase. At this stage, the system checks if the bag clamping device is properly engaged. If so, it sends a signal to open the discharge gate, allowing the material to flow into the packaging bag. After the material is discharged, the gate automatically closes. The bagging device then releases the package, which is transported to the next station. This entire cycle runs automatically, ensuring continuous and efficient operation. Structure A quantitative packaging scale consists of several key components, including the weighing unit, trolley, sewing and conveying system, pneumatic system, dust removal system, and the quantitative packaging control instrument. Among these, the weighing cells are crucial for speed and accuracy. These include storage silos, gates, cutting devices, the scale body, bagging mechanisms, brackets, and electrical control systems. The storage silo acts as a buffer, ensuring a consistent material flow. The gate at the bottom of the silo is used to stop the material during maintenance or failure. The feeding system includes cutting hoppers, doors, and pneumatic components that allow for two-stage feeding—fast and slow—to meet both speed and accuracy requirements. A compensating valve helps balance air pressure within the system. The scale body contains the weighing bucket, load-bearing bracket, and sensor, which convert weight into an electrical signal for the control unit. The bagging device uses mechanical and pneumatic parts to secure the packaging bag and ensure accurate filling. The electrical control system, including the display controller and control cabinet, manages the entire process, ensuring smooth and reliable operation. Understanding the structure and function of quantitative packaging scales is essential for anyone involved in food packaging. Whether you're a technician, operator, or manager, having a clear grasp of how these systems work can greatly improve efficiency and reduce errors. With the right knowledge and maintenance, these scales can significantly enhance productivity and profitability in the packaging industry.

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