The coal mine dust suppression system consists of four parts: dust suppression for fully mechanized mining faces, dust suppression for driving faces, dust suppression for belt conveyor transfer points, and dust suppression for roadways. It is managed by one 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 in real time, and remotely sets the working mode and the start/stop of dust suppression equipment according to the mine working environment.
Real-time data collection through multiple types of sensors, and intelligent linkage with production equipment to achieve precise dust suppression.
Adopting advanced technologies such as foam dust suppression and dry mist dust suppression to efficiently capture dust and significantly improve dust suppression efficiency.
Supports ground remote centralized control and local operation of sub-control boxes, combined with real-time data display to achieve flexible and efficient management.
1. Fully Mechanized Driving Face Dust Suppression System
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.
2. Fully Mechanized Mining Face Dust Suppression System
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.
3. Dust Suppression System For Belt Conveyor Transfer
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 belt conveyor transfer dust suppression can be used as an independent system or connected to the centralized control software platform. The ground software can monitor the spray status of the dust suppression system in real time, and the start/stop of the spray in the dust suppression system can also be remotely controlled from the ground upper computer to achieve remote monitoring.
4. Roadway Dust Suppression System
The dust concentration in the roadway air flow is detected by a dust concentration sensor. When the measured value exceeds the specified value, a signal is sent to the sub-control box to control the electric valve and turn on the spray device, realizing the automatic spray function when the dust concentration exceeds the limit. When there are personnel walking in the roadway, the infrared pyroelectric sensor can detect and send a signal to control the start and stop of the spray device during the personnel’s passage.
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