This article introduces the application and maintenance of electronic belt scales in the shaking system, ensuring stable and reliable operation of electronic belt scales in production.

Batching is an important link in blast furnace production, and its quality directly affects blast furnace production. Batching equipment mainly includes hopper scales and electronic belt scales. As a dynamic scale, electronic belt scale can measure the instantaneous and cumulative flow of materials passing through the belt conveyor without interrupting the material flow. With the continuous improvement of industrial production automation in China, it has been widely used in industries such as metallurgy, building materials, power, chemical industry, and food. Electronic belt scales are widely used in the blast furnace burden system of Pangang Iron and Steel Plant. Understanding and mastering the knowledge of electronic belt scales is beneficial for us to ensure normal production.

The structural principle of electronic belt scale
The electronic belt scale mainly consists of a weighing scale frame, weighing sensors, speed sensors, and weighing instruments.
Working principle: When the electronic belt scale is started, the drive motor drives the belt to run, while the feeding hopper feeds the material onto the belt. When the material flows through the weighing conveyor

Daily use and maintenance
To ensure that an installed electronic belt scale in the batching system can operate satisfactorily, maintain good accuracy and reliability, the following aspects of daily maintenance should be carried out. For newly installed belt scales, zero points should be checked every few months after installation, and periodic calibration should be maintained.

Clean the accumulated materials on the weighing body and adhesive materials on the belt every day. If there are material jams at the support points, they should also be promptly removed to prevent changes in the weighing benchmark. Check the belt once a day for any deviation or slipping.

Due to the flexibility of the weighing roller movement and the degree of radial runout, which directly affect the measurement accuracy, it is necessary to regularly check whether the weighing roller rotates flexibly. Otherwise, it should be cleaned and refueled in a timely manner. However, it is important to note that after the roller is lubricated, the electronic belt scale needs to be recalibrated.

During use, the flow rate should not exceed the maximum value of This not only helps to improve the accuracy of the belt scale, but also increases the service life of the equipment.

It is strictly prohibited to weld on the scale body where the sensor is installed to avoid damaging the sensor. In special circumstances, the power should be disconnected first, and then the grounding wire should be connected to the scale body. The current circuit must not pass through the sensor.
During system maintenance, especially when maintenance personnel are standing on the scale frame for maintenance, it is necessary to empty the weighing sensor to prevent it from being damaged due to overload.

Fault handling
Belt scales have a higher failure rate compared to hopper scales, and common faults are mainly caused by mechanical damage to the scale frame caused by external forces. The deformation of the scale frame can lead to changes in the weighing force. This measurement deviation is relatively obvious and belongs to sudden changes, which are easy to detect. As long as the damaged parts are replaced or restored, but after processing, it is necessary to recalibrate the scale.
Measurement deviation caused by loose fasteners due to long-term operation of the scale frame without maintenance. This type of problem is mainly reflected in the unstable zero calibration value of the instrument. Emphasis should be placed on inspecting and tightening the relevant components of the weighing bridge. Such as sensor connections, weighing rollers, etc.