As the name implies, the multiple silos single weigh static automatic batching system is an automated batching setup that utilizes multiple bins to store different materials while sharing a single weighing unit. Controlled by an intelligent system, it performs sequential weighing, precise proportioning, and automatic mixing of various materials; it is widely used in industries such as fertilizer production, chemicals, building materials, metallurgy, food processing, and pharmaceutical manufacturing.

Compared to traditional manual batching methods, this system resolves long-standing operational challenges—such as low efficiency, significant proportioning errors, and severe dust pollution. It typically supports a flexible configuration of 3 to 8 bins, capable of storing various raw materials like urea, potassium chloride, monoammonium phosphate, and humic acid. Operators simply need to input the production formula via a touchscreen, and the system automatically executes the entire process, including metered dispensing, precise weighing, and unified material feeding.

Workflow of an Multiple Silos Single Weigh Static Automatic Batching System

Taking a four-bin batching machine as an example, the complete automatic batching process is as follows:

Recipe Input: Operators enter recipe data for each bin via the touchscreen (e.g., 50 kg for Bin 1, 40 kg for Bin 2, 10 kg for Bin 3).

Sequential Dispensing: The automatic control system begins with Bin 1 and proceeds sequentially to Bins 2 and 3. The system automatically opens the corresponding bin discharge mechanisms (such as pneumatic valves and conveyors) to feed material into the batching weigh hopper.

Real-time Monitoring: The system monitors weight data from the batching weigh hopper in real time. To balance speed and accuracy, the feeding process typically employs a two-stage control strategy: a high flow rate is used initially to approach the target quickly (coarse feed), and the system switches to a low flow rate (fine feed) as the accumulated weight nears the setpoint, approaching the target value more slowly to minimize the risk of overshooting.

Switching and Shut-off: Once the weight in the hopper reaches the setpoint, the system automatically closes the current bin's discharge mechanism and proceeds to the next bin, continuing sequentially according to bin number.

Completion Notification: After materials from all bins have been dispensed, the control system automatically activates a buzzer or warning light to notify workers that the batching process is complete.

Mixing and Conveying: After the materials are blended in the mixing hopper, they are automatically discharged via a belt conveyor.

In which industries are multiple silos single weigh static automatic batching systems used?

Fertilizer production industry: This is the most widespread application area for multi-bin weighing systems. The equipment is used in the production of various fertilizers—such as organic, compound, and formula fertilizer—supporting the precise blending of basic elements like nitrogen, phosphorus, and potassium. It allows for the separate storage of diverse raw materials, including urea, potassium chloride, monoammonium phosphate, humic acid, and decomposed organic matter. It is suitable for production lines making bio-organic fertilizer from chicken manure and for compound fertilizer processing facilities.

Chemical industry: In chemical manufacturing, multi-bin weighing systems are used for the precise batching of various powdered and granular chemical raw materials. PLC-controlled automatic weighing and batching systems are well-established in the chemical sector.

Construction materials industry: In concrete mixing plants, multi-bin batching machines are used to automatically mix various raw materials such as cement, crushed stone, and sand. The equipment is also suitable for other batching stages in the production of construction materials.

Metallurgical industry: In the metallurgy and mineral sectors, the system is used for the precise batching of powdered ores and metallurgical additives.

Food processing and pharmaceuticals: In the food processing industry, it is used to mix various ingredients or additives. In pharmaceutical manufacturing, it is used for the accurate batching of various medicinal components.

The multiple silos single weigh static automatic batching system—featuring an ingenious “multiple bins, single scale” design—controls equipment costs while ensuring batching precision, making it a practical choice for automation upgrades in industries such as fertilizers and chemicals. As industrial production increasingly demands higher efficiency and quality, this system is evolving from an “optional add-on” into “standard equipme” for a growing number of production lines.