What are the main components of a quantitative feeding belt scale and their respective characteristics?

A quantitative feeding belt scale is an automatic conveying, dynamic weighing, and automatic control batching system, widely used in mining, coal, chemicals, cement, and other industries.

Based on the mechanical structure of the belt conveyor, it incorporates an electronic belt scale for dynamic weighing and an automatic control system, achieving automation in the adjustment of the electronic belt scale.

During the conveyance of solid bulk materials via the belt conveyor, it continuously and automatically weighs the materials.

At the same time, it can alter the speed of the control motor according to predetermined parameters to change the belt speed accordingly, thus achieving quantitative control and completing production batching tasks.

The structural modules of the quantitative feeding belt scale are mainly divided into:

the conveying module for material transport, the electronic belt scale module for dynamic weighing, and the control module for quantitative control.

 These modules are interconnected and interact with each other to fulfill the various functions of the quantitative feeding belt scale.

1. Conveying Module

The conveying module of the quantitative feeding belt scale primarily consists of various mechanical structures with numerous components, including motors, reducers, rollers, idlers, belts, skirts, belt tensioning devices, belt cleaning devices, etc.

These components are customized according to the actual production site conditions. The motor serves as the driving force for material conveyance and must meet or exceed the required power for the application.

Variable frequency motors generally need to meet the scale ratio or flow variation range of the quantitative feeding belt scale.

The selection of reducers depends more on application details such as belt width, material profile, conveyor length, material bulk density, and motor power.

The rollers of the quantitative feeding belt scale are equipped with protective layers to ensure uniform speed without slipping.

Idlers are used to support the belt and must operate flexibly with minimal radial runout, meeting the relevant standards for reliable conveyance.

The belt should be wear-resistant and durable, with different materials selected based on the characteristics of the material being conveyed.

Generally, the quantitative feeding belt scale adopts a ring-shaped belt with precise dimensions and equal side lengths.

Automatic tensioning devices maintain constant belt tension, and automatic cleaning devices keep the belt clean, both contributing to stable material conveyance and maintenance of weighing stability.

Additionally, there are many other devices, such as material stoppers, that work together to ensure continuous and stable material conveyance.

2. Dynamic Weighing Module

The quantitative feeding belt scale employs an electronic belt scale for dynamic weighing, which includes a weighing bridge, load cells, speed sensors, and instrumentation.

The weighing bridge serves as the load-bearing structure. The load cells used are digital and compatible with belt scales, offering strong anti-interference capabilities and high measurement accuracy.

The instrumentation for the quantitative feeding belt scale features an intelligent interface, simple operation, rich functionality, and embedded control software for parameter setting of the feeding belt scale.

3. Automatic Control Module

The quantitative feeding belt scale utilizes a PLC controller for automatic control, integrating analog input/output channels and digital input channels, and providing supporting weighing software.

The PLC connects with the DCS system, and the control instrumentation is integrated within the control cabinet, enabling centralized operation management and decentralized control.

The batching function is achieved through software configuration, offering high reliability, flexible configuration options, diverse communication methods, and cost-effectiveness.

It is particularly suitable for applications with a large number of quantitative feeding belt scales and close integration with the process.

The quantitative feeding belt scale is a comprehensive technical equipment where different components collectively fulfill various functions, playing a crucial role in the realization of automated production.