What technical standards and requirements must belt weighers for coal mines meet?

As one of the key equipment in coal mine production, belt weighers play a crucial role in the production process. They complete the weighing and metering of coal conveyor systems, providing data support for coal production control, yield monitoring, and sales settlement. The accuracy and stability of belt weighers directly affect the results and value of their use.

Moreover, due to the special nature  of coal mine environments, belt weighers for coal mines have additional requirements. Ensuring the accuracy and stability of belt weighers has also become a focal point of concern for coal mining enterprises. This article explores the requirements that belt weighers for coal mines must meet from both technical and standard perspectives.

I. Technical Requirements

1. High Accuracy: The measurement work in coal mines involves technical requirements such as measurement accuracy and error range, which are crucial for coal yield monitoring. Therefore, belt weighers for coal mines must have high accuracy, small measurement errors, and good stability. Thus, sensors with high precision and low errors should be selected, and factors such as environmental temperature changes should be considered during system design and assembly to enhance the stable operation of the equipment.

2. Strong Adaptability: Coal mines are relatively harsh working environments, with materials containing a significant amount of dust, stones, and iron impurities. Belt weighers for coal mines operate underground, where factors such as flammability, explosiveness, humidity, coal dust, impact, and large-scale mechanical vibrations are adverse. Therefore, belt weighers for coal mines must possess explosion-proof performance and strong industrial environmental adaptability to ensure long-term safe and stable operation.

3. Good Anti-Interference Capability: Coal mine equipment operations are subject to strong electromagnetic interference, vibration interference, and other factors. Therefore, belt weighers need to have anti-interference capabilities to ensure measurement accuracy and stability.

4. High Degree of Digitalization: With the gradual popularization of big data and Internet of Things (IoT) technologies, digital belt weighers offer significant advantages in data collection, transmission, and analysis, enabling measurement digitization, information-based control, and full automation.

II. Standard Requirements

1. Design Specifications and Technical Requirements: National quality inspection regulations stipulate technical requirements, accuracy, apparent errors, specified inspection work frequencies, and complete record-keeping procedures during the design and manufacturing processes.

2. Inspection and Audit: National measurement standards specify performance indicators, allowable errors, and measurement ranges for instruments. Each belt weigher device undergoes inspection by specialized agencies and may be subject to additional inspections or audits as needed. Moreover, belt weighers for coal mines, when applied in coal mine working environments, must possess explosion-proof performance and obtain relevant certifications.

3. Operation and Maintenance Requirements: Coal mines require manufacturers to provide detailed instruction manuals on equipment basic parameters, installation, commissioning, and daily maintenance. Simultaneously, manufacturers of belt weighers for coal mines will provide timely after-sales service and maintenance to enterprises in accordance with performance specifications to ensure reliable and stable operation of the belt weighers.

In conclusion, belt weighers for coal mines have stringent technical and standard requirements. They must possess characteristics such as high accuracy, strong corrosion resistance, good anti-interference capability, and a high degree of digitalization.

Simultaneously, manufacturers need to provide detailed technical parameter manuals and conduct strict inspection procedures and maintenance operations during operation to ensure the safe operation of the equipment. Through this approach, the rapid development of China's coal industry and the enhancement of technological levels in the measurement field can be better promoted.