Guangzhou Jingke JKF-159C Graphene Vacuum Packaging Machine (no dust pollution). 1. Features: - Vacuum negative pressure feeding, manual bagging, automatic quantitative packaging. - Automatic weighing and weight parameter adjustment. - Large, medium, small feed valves for speed and accuracy. - Adjustable packaging speed, metering precision, and bag support height. - Auto-protection for inverter, sensors, and meters. - Fully enclosed dust-proof design. - Independent air extraction system for gas issues during powder packaging. - Dust removal system for a clean packaging site. 2. Working Principle: Uses pressure difference between vacuum chamber and feeder to suction powder into bags, packaging in a sealed vacuum state. Water ring vacuum pump evacuates chamber, opens feed valve, utilizes valve bag breathability to press material in while extracting air. Features fast/slow feeding, quantitative control, auto negative pressure detection, auto sealing, and auto door opening. 3. Quantitative Packaging Workflow: A. Set weight (e.g., 10kg). B. Manual valve bag installation. C. Press start; vacuum door closes. D. Outlet seal activates, sealing bag mouth. E. System auto-tares and checks vacuum. F. Vacuum system starts to reach preset level. G. Feed valve opens for filling. H. System adjusts valve analog output for fast/slow feeding based on vacuum. I. At target weight, feed valve closes, vacuum releases to atmosphere. J. Vacuum chamber opens; packaging complete. 4. Technical Specifications: - Material: Graphene. - Single scale capacity: 50-70 bags/h (10kg). - Bag weight: 1-50 kg/bag. - Weighing error: ±0.2% to 0.5%. Note: This is a non-standard product; price shown is for reference. Contact for details. Custom automatic weighing packaging machines for powders, granules, and bulk materials available (valve bag, open bag, ton bag types). Sales: Mr. Huang, Tel: 020-34887002, Mobile: 13640762731, QQ: 2851292153, Email: 2851292153@qq.com.