Single Silo Single Weigh Dynamic Automatic Batching System

The single silo single weigh dynamic automatic batching system is a specialized piece of equipment used in fertilizer production for the automatic metering and batching of various raw materials according to formula ratios. It employs a structure where each raw material compartment is independently equipped with a weighing unit. Through dynamic weighing, it measures the material in real time during the feeding process, achieving precise proportions of nitrogen, phosphorus, and potassium base fertilizers, as well as fillers and other powdery materials. The system boasts a high degree of automation and flexible formula management, effectively replacing manual batching, eliminating human error, and improving batching efficiency and product nutrient uniformity. In organic fertilizer and compound fertilizer production lines, this batching system is located at the front-end raw material processing stage and is a crucial piece of equipment for ensuring that the finished fertilizer meets nutrient standards and maintains stable quality.

Working Principle

The single silo single weigh dynamic automatic batching system is controlled by a PLC. The operator inputs the formula into the touchscreen and starts the batching process. Each raw material compartment sequentially activates its feeding screw, delivering the material into the corresponding weighing hopper. Weighing sensors monitor the weight of the material in the hopper in real time, and the control system compares the dynamic weight with the target value in the formula. The feeding screw initially feeds rapidly, then automatically switches to a slow, precise feed speed as it approaches the target weight, stopping feeding once the set weight is reached. After metering this raw material, the system switches to the next raw material silo for metering, until all ingredients in the formula have been metered. The discharge gates of each weighing hopper open sequentially or simultaneously, unloading the material onto the lower collection belt, which then transports it to the mixing section. The entire metering process is dynamic and continuous, offering high accuracy and speed.

Equipment Composition

Raw Material Bins: Multiple independent silos for storing different types of raw materials. Silo capacity is designed according to production needs, and silo walls can be equipped with anti-bridging devices.

Feeding Screws: Each bin is equipped with a variable frequency speed-regulating screw feeder at the bottom, achieving fast and slow feeding to adapt to different material flow rates.

Weighing Hoppers: Each feeding screw corresponds to a weighing hopper, supported by three or four weighing sensors for independent metering.

Discharge Valves: The bottom of the weighing hoppers is equipped with pneumatic or electric discharge gates for quantitative discharge to the collection belt.

Collection Belt: Receives the material discharged from each weighing hopper and transports it to the mixer or buffer bin.

Control System: PLC programmable controller, touch screen operating interface, capable of storing multiple formulas, achieving automatic control and data recording. Frame and Platform: A steel structure platform supporting the raw material silos, feeders, and weighing hoppers, equipped with maintenance walkways and guardrails.

Performance Characteristics

High Metering Accuracy: Each weighing hopper measures independently, with dynamic weighing accuracy up to ±0.2%, ensuring accurate nutrient content in the formula.

Fast Batching Speed: Sequential metering across multiple silos, but with optimized processes, combining fast and slow feeding for short batch batching times.

Flexible Formula Management: The touchscreen can store dozens of formulas; formulas can be recalled when switching products, eliminating the need for manual calculations.

High Automation: Fully automated from feeding and metering to unloading, compatible with integrated production line control systems.

Wide Material Applicability: Accurately measures powdery, granular, and flowable materials.

Modular Structure: Independent silos allow for easy expansion of raw material types or layout adjustments.