When coal flow passes through the coal conveying belt, the touch sensor detects the coal flow rate and sends a signal to the sub-control box, which controls the electric valve to turn on the spray device and continuously sprays the transfer point for dust suppression.
The main coal-producing processes of the fully mechanized mining face include shearer coal cutting, support movement, transportation and transfer. The dust suppression of the fully mechanized mining face consists of the shearer spray assembly, hydraulic support spray assembly, transfer point spray assembly, return airway dust suppression assembly, and mine-used liquid adding device.
The fully mechanized driving face dust suppression system is mainly composed of mine-used foam dust suppression devices, air-water jet dust suppression devices, belt conveyor transfer dust suppression devices, and roadway dust removal devices. It can be used in conjunction with multiple types and models of equipment, such as roadheaders and excavation-anchoring integrated machines.
During the driving operation, the start-stop sensor installed on the equipment body sends a signal to the sub-control box, which automatically controls the start and stop of the air-water jet dust suppression device. It also realizes linkage operation with the transfer point dust suppression system and the roadway dust removal system, thereby efficiently controlling the high-concentration dust generated during excavation and anchoring operations.
The coal mine dust suppression system is composed of four parts: dust suppression for fully mechanized mining faces, dust suppression for fully mechanized driving faces, dust suppression for belt conveyor transfer points, and dust suppression for roadways. It is managed by a main control box (for data upload) and controlled by multiple sub-control boxes. The ground centralized control software displays the working status and relevant data of each system in real time, and remotely sets the working mode of each system and the start/stop of dust suppression equipment according to the mine working environment.
The coal mine intelligent ventilation system is a comprehensive mine ventilation management platform that integrates modern sensor technology, the Internet of Things (IoT), big data analysis, artificial intelligence (AI), and automatic control technology.
Based on the sensitivity of optical fibers to vibration and temperature, the optical fiber vibration and temperature monitoring device integrates acoustic wave vibration and distributed temperature measurement functions. Through intelligent analysis of vibration signals and combined with a self-developed artificial intelligence engine, it realizes early fault diagnosis of belt conveyor idler bearing damage, fracture, belt friction, deviation, and motor reducer abnormalities.