Ventilation device for coal mine safety

CN224315028UActive Publication Date: 2026-06-02SHENHUA SHENDONG COAL GRP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENHUA SHENDONG COAL GRP
Filing Date
2025-07-07
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Traditional coal mine ventilation ducts are prone to corrosion and blockage, are difficult to install, and have high maintenance costs. Metal suspension supports have high connection strength, which affects construction and safety.

Method used

It adopts a bag-shaped ventilation duct with a double-layer structure consisting of an outer fireproof layer and an inner pressure-bearing layer. It is equipped with multi-directional ventilation openings and guide lights, and uses H-shaped mounting brackets for suspension installation. The connection is lightweight and easy to assemble, and it is equipped with a filter to reduce dust entry.

Benefits of technology

It achieves lightweight, easy-to-install and maintain multi-directional air supply, reduces dust entry, provides escape direction guidance, lowers the connection strength requirements of the hoisting support, and improves construction convenience and safety.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224315028U_ABST
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Abstract

This application discloses a ventilation device for coal mine safety, belonging to the technical field of coal mine ventilation devices. It includes a mine fan and bag-shaped ventilation ducts installed on the mine fan. Several bag-shaped ventilation ducts are present, and adjacent bag-shaped ventilation ducts are assembled together via a connecting structure. Each bag-shaped ventilation duct includes an outer fireproof layer and an inner pressure-bearing layer. Multiple ventilation openings are provided along the arc surface of each bag-shaped ventilation duct, spaced apart along the duct axis. Compared with traditional metal ventilation duct systems, this ventilation device features a double-layered bag-shaped ventilation duct that can be assembled end-to-end, resulting in a lightweight structure, significantly reduced requirements for the connection strength of the hoisting supports, easier assembly and installation, easier maintenance, and more uniform and comfortable airflow. It can achieve multi-directional airflow and, with the aid of guide lights, can provide escape direction guidance for ground personnel.
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