The underground belt scale used in coal mines is an explosion-proof electronic belt scale specifically applied to underground belt conveyors in coal mines. It combines the dynamic measurement of the belt scale with the explosion-proof performance of explosion-proof electrical equipment. It can monitor the production of raw coal underground and provide production data, and has become one of the essential equipment for monitoring coal mine production.
Coal mines require specialized underground belt scales for coal mining, mainly because:
(1) Safety requirements: The underground environment of coal mines usually contains flammable and explosive substances such as gas and coal dust. Special explosion-proof belt scales must be used to ensure safety during the weighing process and avoid safety accidents.
(2) Environmental adaptability requirements: The underground environment is harsh, and in addition to flammable and explosive factors, there are various other adverse factors. Ordinary belt scales cannot be used in this environment. Explosion proof belt scales with stronger performance such as explosion-proof, dustproof, waterproof, anti-corrosion, and anti-interference are needed to ensure that the belt scales can operate normally and measure accurately underground.
(3) Accuracy requirements: In the coal mining production process, there are strict requirements for the output and weight of coal, and accurate, stable, and reliable weighing and measurement are needed for real-time monitoring.
(4) Production management requirements: The underground belt scale used in coal mines should be able to monitor coal production in real time and provide accurate production data, facilitating the supervision of coal production and the more reasonable formulation and adjustment of production measurement.
(5) Requirements for improving homework efficiency: Through dynamic online weighing and automatic recording of production data, errors in manual weighing operations and recording can be reduced. It can also reduce manual labor, lower labor costs, and improve coal mine production efficiency.
Application functions of underground belt scales for coal mines
(1) Graphic human-machine interface, color large screen display, fully Chinese human-machine interface, intuitive display, easy to operate and user-friendly.
(2) Digital sensing method, equipped with a converter for the weighing sensor, using digital communication for weight sensing, with stronger signal anti-interference ability and longer transmission distance without the need for long line compensation.
(3) A complete communication interface with RS232, RS485, CAN and other communication interfaces, using standard communication protocols, can be easily connected to coal mine local area networks or various industrial configuration software.
(4) Convenient maintenance function, which can provide various diagnostic maintenance, interface testing and other functional operations, making it convenient for users to conduct comprehensive maintenance and inspection of the belt scale measuring system, quickly determine the cause of system failures, and reduce downtime caused by failures.
(5) Complete calibration function, with multiple calibration functions such as physical calibration, chain code calibration, hanging code calibration, electronic calibration, etc. It has a one click calibration function, which is convenient for calibration work.
(6) Full data recording, real-time monitoring and recording of equipment operation status, full recording of instrument operation events, recording of alarm and fault information, and the ability to query the dates of historical events at any time.
(7) Historical production query, in addition to displaying real-time instantaneous flow and cumulative flow, can also query various cumulative production such as daily, monthly, annual, and shift through instruments or upper computer software, and display them in the form of graphical reports, making it convenient to query statistical data of various historical production.
The underground belt scale in coal mines is a real-time online dynamic measuring device that is specifically used in the underground environment of coal mines. It is safe, reliable, has high measurement accuracy, is stable, durable, multifunctional, intelligent, and information-based. It plays an important role in coal mine production and supervision.
