The granules fertilizer packing machine is a specialized piece of equipment used in the fertilizer industry for the automatic metering, filling, and sealing of granular finished products. It is primarily designed for materials with good flowability, such as compound fertilizers, organic fertilizer granules, and bio-organic fertilizer granules. Unlike powder fertilizer packing machines, which use a screw-driven forced feeding system, granules fertilizer packing machines utilize the inherent flow characteristics of the granules, employing gravity feeding or vibration feeding to achieve rapid filling, balancing high packaging speed with low granule breakage. The equipment is highly automated, capable of weighing, filling, bag loosening, and conveying. It is suitable for large-volume continuous packaging operations and is an important piece of equipment for achieving efficient and clean packaging at the end of a granular fertilizer production line.
Working Principle
The granules fertilizer packing machine achieves accurate metering through a combination of gravity or vibration feeding and an electronic weighing system. Material enters the feeding mechanism from the buffer hopper, which feeds the material into the packaging bag fitted at the outlet in a two-stage (fast and slow) manner. The granules flow rapidly into the bag under their own weight, and the weighing sensor detects weight changes in real time. When the material inside the bag approaches the set weight, the feeding mechanism automatically switches to slow feeding, stopping once the target value is reached. The bag clamping mechanism then releases, and the full bag falls onto the conveyor belt to be sent to the sealing process. The entire process is PLC-controlled; the operator only needs to perform the bagging action, and the rest runs automatically.
Equipment Components
Buffer Hopper: Connects to the upstream finished product silo to maintain a stable material level and provide continuous material to the feeding mechanism.
Gravity Feeding Device: Consists of a high-flow main feed gate and a low-flow precision feed gate, with fast and slow speeds ensuring metering accuracy.
Vibrating Feeder: Optional component; uses vibration to assist in the uniform feeding of less fluid granular materials.
Weighing System: High-precision weighing sensors and a weighing frame to detect the weight of the material inside the bag in real time.
Bag Clamping Mechanism: Pneumatic bag clamping device to fix the empty bag opening at the outlet and form a seal.
Frame and Conveying Device: A steel frame supporting the entire machine; a conveyor belt at the bottom delivers the full bag.
Performance Characteristics
High Packaging Speed: High gravity feeding flow rate, capable of packaging hundreds of bags per hour, suitable for high-volume production lines.
High Metering Accuracy: Two-stage feeding combined with electronic weighing ensures metering error is controlled within ±0.2%.
Minimally Broken Particles: Material flows into the bag by its own weight, without mechanical squeezing or shearing, maintaining particle integrity.
Excellent Anti-Clogging Design: Optimized feeding gate and flow channel prevent bridging and clogging of particles.
Low Dust Pollution: Sealed filling port and bag clamping mechanism allow connection to dust collection systems to improve the environment.
Easy Specification Switching: Target weight and feeding speed parameters are set on the touchscreen for quick switching between packaging specifications.
