Mining Ventilation Doors And Systems
mining ventilation doors and systems
Mining ventilation doors and intelligent ventilation systems are core complete sets of equipment for underground airflow control in mines, mainly used to accurately adjust roadway air volume, block gas backflow, and isolate fire smokeThe system consists of an intelligent air door body, air pressure sensor, PLC control unit, and remote monitoring platform, which can automatically adjust the air door opening according to real-time underground environmental data to realize intelligent and energy-efficient operation of the ventilation system.
Composition of Structural Components
The mining ventilation doors and intelligent ventilation systems adopt a modular design, with the air door body matched with a high-strength sealing structure, and the air leakage rate ≤2%. The system has a built-in AI ventilation algorithm that can automatically match the ventilation requirements of mining faces, saving more than 25% energy compared with traditional ventilation systems, and has been put into use in many large domestic coal mines.
Working Principle
It remains normally closed under normal conditions, monitoring roadway air pressure through pressure sensors. When gas concentration exceeds the limit or water inrush occurs, the hydraulic system is automatically activated to lock the door body; when personnel pass through, it can be triggered to open by infrared induction or manual button, and automatically closes after a 30-second delay.
| Parameter Type | Specific Parameters |
|---|---|
| Material | Air door: Q345B steel plate (8mm)/Frame: channel steel/Sealing strip: flame-retardant rubber |
| Composition & Functions | Air door body (air volume adjustment/sealing isolation)/Sensor (air pressure/gas concentration monitoring)/PLC unit (automatic control)/Monitoring platform (remote control) |
| Core Parameters | Air leakage rate ≤2%/Adjustment accuracy ±5%/Response time ≤3s/Operating temperature -40℃~50℃/Energy saving rate ≥25%/Service life ≥10 years |
Installation Steps
1. Pour C25 concrete foundation at the chamber entrance and embed the door frame (depth ≥500mm);
2. Install the door body and hydraulic pump station, and connect hydraulic pipelines (slope ≥5°);
3. Debug sensors and control system to ensure smooth opening and closing;
4. Conduct pressure test to confirm sealing performance.
Operation Steps
1. Press the start button at the door or wait for infrared induction when personnel pass through;
2. Pass quickly after the door opens, and do not stay inside the door;
3. The door automatically closes after passage, confirm that the locking indicator light is on;
4. Regularly check hydraulic oil level and sealing strip wear, and conduct a pressure test every quarter.
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