
In industrial production, automatic weighing and automated control are common measures to enhance efficiency, ensure quality, and reduce costs. Among these, weighing feeders are crucial applications. Faced with diverse and complex working environments and production processes, various types of weighing feeders have been developed to meet different conditions, with the screw weighing feeder being a widely used structural form.
A screw weighing feeder is a comprehensive automated production equipment that utilizes a screw tube to convey bulk materials, integrating electronic dynamic weighing and PLC (Programmable Logic Controller) automated control.
The spiral blades inside the screw tube generate a strong thrust to transport materials, while steady flow technology ensures uniform, stable, and continuous material delivery. Similar to electronic belt scales, high-precision weighing sensors are employed to monitor material weight in real-time and accurately.
These measurements are compared with predetermined system parameters, and when the weighed amount matches the set parameters, the PLC initiates the feeding process.

From the above overview of the working principle and process of the screw weighing feeder, it is evident that it is primarily used for quantitative control of bulk materials in various production activities. Specific applications include the following scenarios:
(1) Application in Production Automatic Batching Systems
Automatic batching in production is one of the most common and important applications of screw weighing feeders. In industries such as chemicals, cement, and building materials, various raw materials are precisely weighed and fed before being mixed and introduced into the next production stage. Screw feeders enable rapid, efficient, precise, stable, and high-quality batching with minimal errors.
(2) Application in Rapid Quantitative Loading Systems
In many industries, such as coal preparation plants and mines, there is a need to rapidly load large quantities of bulk materials. Screw feeders can be applied in automated loading systems to achieve on-site automation.
These systems offer high feeding capacity, uniform and continuous feeding, stable operation, and small dynamic discharge errors, ensuring long-term stability and high loading accuracy. This effectively resolves issues related to overloading and underloading, which can cause repeated loading and unloading, thereby improving loading efficiency and avoiding traffic safety problems caused by overloading.
(3) Application in Smelting Ash Feeding Systems
In the melting systems of copper smelting enterprises, it is necessary to mix ash with copper concentrate and feed it into a flash furnace. Accurate weighing and metering of the ash are required to control the feeding amount. Given that ash is lightweight and prone to dusting, using a screw feeder is a reasonable solution.
The sealed screw tube of the screw feeder effectively prevents ash leakage and dusting, protecting the work environment and reducing material waste. It is worth emphasizing that screw feeders are not only suitable for smelting ash feeding systems but also for quantitative feeding of other powdery materials, such as flour and coal powder.
Screw weighing feeders have extensive and important applications in various industrial production scenarios, significantly enhancing production automation levels and efficiency, improving operational accuracy, reducing labor-intensive tasks, lowering production time and labor costs, and facilitating the integration with comprehensive production data management systems.
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