In industries such as building materials, cement, grain, chemicals, and mining, bulk materials are often transported over short distances using belt conveyors. To ascertain the weight of the raw materials for calculating input-output ratios and optimizing production policies, a metering device must be integrated into the belt conveyor's operation. This metering device must be dynamic and continuous, completing the weighing process as the belt conveyor operates.
The belt conveyor scale is a dynamic continuous weighing device installed on the belt conveyor. It consists of a weighing frame, a total weight sensor, a speed measurement device (speed sensor), and a controller (instrument). The weighing frame is installed at an appropriate position in the middle of the belt to transmit the material pressure on the belt to the weighing sensor. The weighing sensor converts this pressure into a voltage signal representing the material weight. The speed sensor converts the roller speed, which is proportional to the belt speed, into a pulse signal. The instrument continuously receives and processes these signals to calculate and display the instantaneous flow rate and cumulative flow of the material passing over the belt.
The basic working principle and process of the belt conveyor scale illustrate that it operates continuously and dynamically. As long as the belt conveyor is running and material is passing through, the scale can dynamically determine the material weight without manual intervention, resulting in high weighing efficiency.
The automation of the belt conveyor scale is not only reflected in the weighing process but also in the statistical analysis of weighing data. Traditional belt conveyor weighing methods require manual intervention and cannot provide real-time production measurement data. Manual data statistics are required for each shift, day, week, etc., which is inefficient, prone to errors, and may even lead to fraud.
The belt conveyor scale overcomes the limitations of data statistics management in previous conveyor weighing methods. Its instrument has microcomputer features, capable of displaying, storing, querying, and transmitting data. It automatically and real-time displays instantaneous flow rate and cumulative flow and allows for querying historical data by shifts, days, months, years, etc., providing data for on-site production inquiries. Additionally, modern belt scales are equipped with upper computer software systems for remote data inquiry, real-time scale status monitoring, and visual data reporting. The presentation of automated information data reports eliminates the need for cumbersome manual data statistics, reducing workload and avoiding manual data errors and fraud.
In terms of installation and operation, the belt conveyor scale is simple and easy to use. After operation and calibration training, operators can basically perform tasks independently. The scale has a simple structure and is easy to install. The instrument features Chinese menu prompts, and the upper computer software system is developed based on Windows components, aligning with daily operation habits. The instrument also has a one-key calibration function and supports remote calibration. Furthermore, the belt scale has self-monitoring, self-diagnosis, and self-alarm capabilities, assisting maintenance personnel in quickly identifying issues to enhance stability and simplify maintenance work.
The belt conveyor scale with automated weighing improves weighing efficiency, offers data management through information technology, simplifies manual weighing and data analysis, reduces labor and time costs, and is easy to operate. It is suitable for efficient weighing of bulk materials in industrial settings.