Overview
The semi-automatic granule packing scale is a cost-effective solution for businesses requiring accurate packaging of loose granular products. It bridges the gap between fully manual operations and high-end automated systems, offering a balance of affordability and efficiency. Commonly used in agriculture, food processing, and chemical industries, this equipment typically handles capacities ranging from 5 to 50 kg per bag. Its modular design allows integration with existing production lines or standalone operation in small facilities.
Structure and Working Principle
The machine consists of a hopper for manual feeding, a weighing sensor system, a control panel with preset parameters, and a bag-holding clamp. When activated, granules flow into the weighing bucket until the target weight is reached, triggering an automatic stop. Advanced models include features like touchscreen interfaces, data logging for batch tracking, and pneumatic bag clamping systems. The weighing mechanism often uses strain gauge sensors for reliability, with some units offering multi-head scales for faster throughput.
Key Features
Dust-resistant enclosures protect sensitive components in powdery environments, while stainless steel contact surfaces ensure longevity with abrasive materials. Many units offer dual-unit display (kg/lb) and tare functions for flexible operation. Energy efficiency is a notable advantage, with most models consuming under 0.5 kW. Optional accessories include conveyor belt attachments for bag transport and printers for label generation. The typical operational speed ranges from 4 to 10 bags per minute depending on material characteristics.
Application Areas
In agriculture, these scales package seeds, animal feed, and fertilizers with minimal product loss. Food processors use them for rice, sugar, beans, and powdered ingredients where hygiene is critical. The chemical industry employs them for measured portions of resin pellets, industrial salts, and compound fertilizers. Their adaptability makes them suitable for R&D labs and small-batch production where frequent material changes occur.
Maintenance and Precautions
Weekly inspection of load cells and cleaning of residual particles prevents measurement drift. Lubricate moving parts like pivot joints every 3 months using food-grade grease where applicable. Avoid exposing electronic components to moisture or direct sunlight. Calibration should be performed monthly using certified test weights, or immediately after relocating the equipment. Always power off before cleaning internal mechanisms.
B2B Procurement Guide
When sourcing, verify compatibility with your bag types (woven PP, paper, etc.) and granule characteristics (flowability, abrasiveness). Request material certificates for food-contact applications. Consider total cost of ownership—some Chinese manufacturers offer competitive pricing at $2,000–$3,500 for mid-range models, while European brands may charge 30–50% more for enhanced precision. Lead times typically range from 2–8 weeks depending on customization requirements.
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