[Chinese Packaging Network News] The benefits and principles of quantitative packaging scales, their structure and importance Quantitative packaging scales have become a critical component in the modern food packaging industry. In recent tenders for state-owned food reserve warehouses organized by the State Grain Administration, many companies have opted to purchase these scales. Their performance and ease of use directly impact the economic efficiency of grain reserves. Given this context, it is both urgent and essential for grain reserve operators to gain proficiency in the necessary adjustment and maintenance knowledge. As a result, it's clear that the quantitative packaging scale plays a vital role in food packaging equipment, especially within national grain reserve facilities. Its effective application has already demonstrated significant advantages, leading to improved production efficiency and profitability. As the technology continues to evolve, the quantitative packaging scale has further enhanced the economic returns of the food packaging sector. Basic Working Principle When the quantitative packaging scale enters automatic operation mode, the weighing control system opens the feeding gate and begins the feeding process. The feeding device operates in both fast and slow modes. Once the material reaches the set value for fast feeding, the fast feeding stops, and the system switches to slow feeding. When the material weight reaches the final set value, the feeding door closes, completing the dynamic weighing process. At this point, the system checks if the bag clamping device is in the correct position. If the packaging bag is properly clamped, the system sends a control signal to open the discharge door of the weighing hopper, allowing the material to flow into the bag. After the material is discharged, the hopper door automatically closes. The bagging device then releases the package, which is dropped and sewn before being transported to the next station. This entire cycle operates automatically. Structure A quantitative packaging scale consists of several key components: the weighing unit, trolley, sewing and conveying device, pneumatic system, dust removal system, and the quantitative packaging control instrument. Among these, the weighing cells are particularly crucial, as they determine the speed and accuracy of the packaging process. These include storage silos, gates, cutting devices, scale bodies, bagging mechanisms, brackets, and electrical control systems. The storage silo acts as a buffer, storing materials and ensuring a consistent flow. The gate at the bottom of the silo is used to block materials during maintenance or system failures. The feeding device includes cutting hoppers, cutting doors, and pneumatic components, enabling both fast and slow feeding during the weighing process. The compensating valve helps balance air pressure differences within the system. The scale body comprises a weighing bucket, load-bearing bracket, and a weighing sensor, which converts the weight into an electrical signal for processing. The bagging device includes a clamping mechanism and pneumatic parts, ensuring that the weighed material is accurately placed into the packaging bag. The electrical control system, consisting of a display controller, electrical components, and a control cabinet, ensures smooth and orderly operation of the entire system. Understanding the structure and function of quantitative packaging scales can help users better grasp the role of such equipment in modern industrial settings. For those encountering unconventional applications, this knowledge can provide valuable guidance and support.

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