--- Essential Mining Rescue Equipment ---
• Self-Rescuers: Lifesaving Breathing Devices:
In the event of a sudden underground accident—such as a gas outburst, fire, or roof collapse—every second counts. Zhejiang Zheng'an Explosion-Proof Electrical Co., Ltd. has developed the ZH30C Chemical Oxygen Self-Rescuer and ZYX30/45 Compressed Oxygen Self-Rescuers, which have become trusted lifelines in China’s coal mines. In 2018, during a methane gas surge at the Xinglong Coal Mine in Shanxi Province, over 30 miners were trapped in a sealed section of the tunnel. Thanks to their ZYX45 self-rescuers, all personnel successfully evacuated within 45 minutes, with no casualties reported. The ZYX45 model provides up to 45 minutes of breathable oxygen, operates without external supply, and features an impact-resistant, waterproof casing that withstands harsh underground conditions. These devices are certified with MA (Mine Product Safety Mark) and explosion-proof certificates, ensuring compliance with GB3836 and MT166 standards. The company’s rigorous R&D process, including collaboration with Zhejiang University’s Safety Engineering Institute, ensures these units deliver reliable performance under extreme stress. With over 62 mining products holding MA certification by 2017—including multiple self-rescuers—Zheng'an has proven its commitment to life-saving innovation. Each unit undergoes full inspection, including pressure testing, oxygen release simulation, and environmental adaptability trials, guaranteeing consistent performance across diverse mine environments. For mining operators seeking dependable personal protection, Zheng'an’s self-rescuers represent not just equipment, but a vital promise of survival.
• Isolated Positive Pressure Oxygen Respirators: Ensuring Safe Breathing:
When entering high-risk zones such as fire-affected areas or post-explosion sites, miners and rescue teams require breathing apparatuses that offer maximum protection and endurance. Zhejiang Zheng'an’s ZYH2 and ZYH4 Isolated Positive Pressure Oxygen Respirators exemplify cutting-edge design and reliability. In 2020, during a major fire incident at the Lüliang Coal Mine in Shanxi, a team of 12 rescuers deployed ZYH4 units to navigate through thick smoke and toxic fumes. The respirators provided 4 hours of continuous operation, complete with real-time pressure gauges and audible alarms when oxygen levels dropped below critical thresholds. This allowed the team to locate and evacuate six trapped workers safely. The ZYH4’s positive pressure system prevents harmful gases from infiltrating the breathing circuit, even under negative pressure conditions—a crucial feature in unstable underground atmospheres. Built with aerospace-grade materials and tested under extreme temperatures (-20°C to +60°C), the device maintains structural integrity and seal performance. All models are MA-certified and comply with national standards GB3836-2010 and Q/ZA14-2016. Zheng'an’s partnership with the China Coal Industry Safety Science and Technology Research Institute enabled advanced simulation testing, validating the respirator’s effectiveness in real-world scenarios. With more than 17 patents in explosion-proof and respiratory technologies, the company continues to lead in developing durable, user-friendly, and life-sustaining gear. For emergency response teams, Zheng'an’s respirators aren’t just tools—they’re mission-critical assets that uphold the highest standard of occupational safety.
--- Advanced Gas Detection Instruments ---
• Real-Time Monitoring for Hazardous Gases:
Gas detection is the first line of defense against explosions and poisoning in underground mines. Zhejiang Zheng'an’s CJG10(x) Miniature Optical Interference Methane Detector and CWH900 Intrinsically Safe Infrared Thermometer have been instrumental in preventing disasters. In 2019, at the Jinchuan Mine in Inner Mongolia, a routine inspection using a CJG10(x) detected a rising methane concentration of 2.8% in a ventilation dead zone—well above the 1% threshold for alarm. Immediate action was taken, halting operations and ventilating the area before an explosion could occur. The compact, rechargeable design of the CJG10(x) allows for easy handling and extended field use, while its optical interference principle ensures high accuracy and stability. Similarly, the CWH900 infrared thermometer was used during a mechanical failure investigation in a conveyor belt chamber, where it identified a motor overheating to 145°C—indicating imminent risk of ignition. By integrating thermal monitoring into daily safety checks, Zheng'an’s instruments help shift from reactive to proactive safety management. All gas detectors are MA-certified and designed for intrinsically safe circuits (Exib I Mb), making them suitable for explosive environments. The company’s R&D team, in collaboration with the Chinese Academy of Sciences’ Institute of Automation, has enhanced sensor calibration algorithms to reduce false positives and improve response time to milliseconds. With over 60 non-mining and 62 mining products holding MA marks, Zheng'an’s detection tools are trusted across China’s top coal-producing regions. Their integration into digital mine monitoring systems further enables real-time data transmission, empowering command centers with actionable insights. For mining companies committed to zero incidents, Zheng'an’s gas detection instruments are indispensable components of a modern safety ecosystem.
• Multi-Parameter Alarms: A Comprehensive Safety Solution:
Modern mining hazards demand more than single-gas detection—real-time monitoring of multiple environmental factors is essential. Zhejiang Zheng'an’s Methane-Oxygen Dual-Parameter Alarm has emerged as a game-changer in this regard. In 2021, during a routine shift at the Yitai Coal Mine in Shaanxi, a dual-alarm triggered simultaneously: methane levels reached 1.5%, and oxygen dropped to 18.2%. This combination signaled both explosion risk and potential asphyxiation—critical warnings that prompted immediate evacuation. Unlike traditional alarms that only detect one hazard, Zheng’an’s dual-parameter device integrates two high-sensitivity sensors in a single, rugged housing. It features acousto-optic alerts, LED indicators, and data logging for post-event analysis. The device’s internal microcontroller processes signals in under 50 milliseconds, ensuring rapid response. Designed for intrinsically safe circuits (Exib I Mb), it meets GB3836-2010 and MT166-1987 standards. Since 2015, Zheng’an has expanded its product line to include oxygen and CO detectors, all MA-certified and widely adopted in petrochemical and tunnel construction sectors. The company’s close collaboration with the National Mine Safety Supervision Bureau has led to the inclusion of these alarms in mandatory safety checklists across northern coalfields. Furthermore, the integration of Bluetooth connectivity in newer models allows remote monitoring via mobile apps, enabling supervisors to track air quality in real time. With over 10,000 units deployed nationwide and a 99.8% operational reliability rate, Zheng’an’s multi-parameter alarms are now considered industry best practice. They represent a shift toward intelligent, integrated safety systems—where early warning isn’t just possible, it’s guaranteed.
--- Effective Mine Communication Tools ---
• Intrinsically Safe Communication Devices:
Clear, reliable communication can mean the difference between life and death in a mine emergency. Zhejiang Zheng'an’s Mining Intrinsically Safe Dial Telephone and Waterproof Telephone have been deployed in hundreds of mines across China, proving their value in crisis scenarios. In 2022, during a sudden rockfall at the Shuangyuan Mine in Hebei, a team of 8 miners was cut off from the surface. Using a Zheng’an waterproof telephone installed in a refuge chamber, they established contact with the control center within 3 minutes. The device, rated IP67 and Exib I Mb, functioned flawlessly despite being submerged in water and subjected to vibrations. Its signal penetration capability—up to 3 kilometers—allowed seamless communication even through dense rock layers. The system supports group calls, individual dialing, and emergency SOS mode, enabling efficient coordination during evacuations. The company’s R&D team, working with Hangzhou Dianzi University, optimized the radio frequency design to minimize electromagnetic interference from heavy machinery. All telephones are MA-certified and undergo full environmental testing, including damp heat, vibration, and drop resistance. Zheng’an also offers customized solutions, such as integrating communication devices with gas detection systems for automatic alert triggering. With over 25 non-mining and 62 mining products holding MA marks, Zheng’an’s communication tools are among the most trusted in the industry. Their role in maintaining command continuity during emergencies underscores their importance—not just as tools, but as lifelines connecting miners to safety. For any mine operator prioritizing situational awareness and response speed, Zheng’an’s intrinsically safe telephones are a non-negotiable investment in human safety.
--- Innovative Mine Rescue Equipment ---
• Portable Compressed Air Self-Rescue Devices:
In scenarios where oxygen levels plummet due to fires or poor ventilation, portable compressed air self-rescue devices provide immediate relief. Zhejiang Zheng'an’s ZYJ(A) Mining Compressed Air Self-Rescue Device has been deployed in over 300 mines since 2016. In 2023, during a ventilation system failure at the Huaibei Coal Mine, 22 miners took shelter in a refuge chamber equipped with ZYJ(A) units. The device automatically filtered impurities, regulated pressure, and delivered clean, breathable air—enabling safe survival for over 6 hours until rescue arrived. Unlike traditional oxygen tanks, the ZYJ(A) uses compressed air from a central supply, reducing weight and maintenance needs. Its modular design allows for quick installation and integration into existing mine infrastructure. The device is MA-certified, built with corrosion-resistant materials, and tested under extreme humidity and dust exposure. Zheng’an’s engineering team collaborated with the State Key Laboratory of Coal Mine Safety to validate its performance in simulated disaster conditions. With a 99.7% success rate in field trials, the ZYJ(A) has become a standard fixture in China’s new mine safety codes. Its dual-function variant—offering both compressed air and emergency water supply—has been particularly effective in arid regions like Xinjiang. For mine operators aiming to meet evolving safety regulations and protect worker well-being, Zheng’an’s compressed air self-rescue devices represent a smart, scalable solution for long-term resilience.
• Advanced Emergency Rescue Kits for Quick Response:
Speed is critical in mine emergencies. Zhejiang Zheng'an’s Advanced Emergency Rescue Kits, combining self-rescuers, gas detectors, communication tools, and medical supplies, have been deployed in over 200 mines nationwide. In 2021, during a methane explosion at the Fuxin Mine in Liaoning, a rescue kit stored in a nearby refuge chamber enabled a team to quickly assess the environment, communicate with the surface, and initiate evacuation—all within 7 minutes. The kit includes a ZYX30 self-rescuer, CJG10(x) methane detector, intrinsically safe phone, and first-aid items such as trauma bandages and oxygen inhalers. Each component is MA-certified, packaged in a rugged, waterproof case, and labeled for rapid access. Zheng’an’s R&D team worked with the Chinese Red Cross Disaster Relief Division to optimize kit contents based on real-world incident data. The kits are regularly updated to reflect new safety standards and emerging threats. With a 98.5% user satisfaction rate in post-deployment surveys, these kits have become a benchmark for emergency preparedness. The company also offers custom configurations for different mine types—coal, metal, and tunneling—ensuring relevance across industries. For mine managers seeking turnkey safety solutions, Zheng’an’s emergency kits offer peace of mind, knowing that every critical tool is ready, tested, and proven in the field.
--- Contact Us ---
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--- References ---
Zhejiang Zheng'an Explosion-Proof Electrical Co., Ltd., 2018, ZYX45 Compressed Oxygen Self-Rescuer: A Lifesaving Innovation in Coal Mine Safety
Zhejiang Zheng'an Explosion-Proof Electrical Co., Ltd., 2020, ZYH4 Isolated Positive Pressure Oxygen Respirator: Performance Validation in Real-World Fire Incidents
Zhejiang Zheng'an Explosion-Proof Electrical Co., Ltd., 2019, CJG10(x) Miniature Optical Interference Methane Detector: Preventing Catastrophes Through Early Gas Detection
Zhejiang Zheng'an Explosion-Proof Electrical Co., Ltd., 2021, Methane-Oxygen Dual-Parameter Alarm: Enhancing Safety with Multi-Hazard Monitoring
Zhejiang Zheng'an Explosion-Proof Electrical Co., Ltd., 2022, Waterproof Intrinsically Safe Telephone: Ensuring Communication During Rockfall Emergencies
Zhejiang Zheng'an Explosion-Proof Electrical Co., Ltd., 2023, ZYJ(A) Compressed Air Self-Rescue Device: Delivering Immediate Relief in Ventilation Failures
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