The ton bag fertilizer packaging machine is designed specifically for the weighing and packaging of bulk materials in the 500—2,000 kg range. Integrating electronic weighing, automatic bag release, and dust removal, it is primarily used for the bulk packaging of products such as chemical fertilizers, organic fertilizers, compound fertilizers, and BB fertilizers.
A standard ton bag fertilizer packaging machine mainly consists of the following parts:
Feeding mechanism: Depending on the material characteristics, gravity feeding, spiral feeding or belt feeding can be selected. Gravity self-flow is suitable for granular fertilizers with good fluidity, while spiral feeding is more suitable for powdery materials. Most models adopt two or three levels of feeding precision control - large feeds are responsible for fast filling, and small feeds are used for precise replenishment, taking into account both speed and accuracy.
Weighing system: It adopts electronic platform scale measurement and is equipped with high-precision weighing sensors. The dynamic weighing accuracy can reach ±0.1%-0.2%, and the static accuracy is even higher. The weighing control display instrument is fully digital and has functions such as automatic tare, automatic zero calibration, automatic drop correction, out-of-tolerance alarm and fault self-diagnosis. The instrument is equipped with a communication interface to facilitate networking and remote monitoring.
Bag clamping and bag hanging mechanism: Pneumatic or mechanical bag clamping device automatically clamps the bag mouth or sling of the ton bag. The fully automatic model is also equipped with a mechanical arm and vacuum suction cup, which can automatically grab, open and hang large bags from the bag library.
Dust removal system: Set up an annular dust collector hood around the filling port and connect it to a pulse bag dust collector. The dust raised during filling is instantly pumped away. At the same time, it is equipped with an exhaust filter cartridge to allow the air in the bag to be discharged while leaving the dust behind, preventing the ton bag from bulging.
Control system: PLC plus touch screen control, which can preset a variety of packaging specifications and display weight and cumulative data in real time. The entire process, from bag clamping, fast and slow feeding, weighing to standard, to loose bag conveying, is automated.
1. Preparation: An empty pallet is manually placed in the packaging position beneath the weighing platform.
2. Bag Attachment: Upon pressing the start button, the bag-clamping mechanism automatically grips the filling opening of the packaging bag.
3. Taring: The system automatically deducts the weight of the packaging bag.
4. Fast Filling: A gravity or screw-type feeding mechanism rapidly fills the bag while the weighing instrument continuously monitors the weight.
5. Slow Filling: Once the fast-fill setpoint is reached, the system switches to slow filling until the target weight is achieved.
6. Bag Discharge: Upon completion of filling, the bag-suspension hooks automatically release and the clamping mechanism opens, allowing the filled ton-bag to drop onto the pallet.
7. Conveying: A slat conveyor transports the filled bag away from the packaging position.
Ton bag fertilizer packaging machines are widely used in the following scenarios:
Chemical fertilizer production: Packaging of urea, compound fertilizers, BB fertilizers (bulk-blended fertilizers), organic fertilizers, etc., into large bags.
Chemical raw materials: Plastic granules, rubber, dyes, etc.
Construction materials industry: Cement, sand and gravel, mineral powder.
Grain and feed: Grains, feed ingredients.
Notably, fully automatic bulk bag packaging lines specifically designed for BB fertilizers (bulk-blended fertilizers) have become a hot trend in recent years; these systems accommodate 500—2,000 kg bags and are tailored to the large-scale packaging requirements of granular NPK (nitrogen, phosphorus, and potassium) blends.
