Product Name: Mine air pressure, self-help device 

 Product Model: ZYJ type 

 Coal safety sign: MLA080017 

 Description: 
 Decompression, the flow control, silencers, discharge, dust and other functions of the product has a compact structure, easy to use, fast, when coal mine gas exceeded by the device to provide fresh air to the staff, the role of security for disaster prevention . 

 Product characteristics and uses: 
 ZYJ type of mine air pressure self-rescue devices, decompression, traffic regulation, silencer, discharge, dust and other functions, structure, lightweight, easy to use, fast. When excessive coal mine gas or excessive signs, to provide fresh air through the device to the staff, the role of security for disaster prevention, underground ancients gave birth to the ideal insulated protective devices. 

 How it works: 
 Installed by the pipe opening and closing valve connecting tube decompression group and the protective cover 5 parts. Coal mine gas concentration exceeded or excessive signs, flip open and close the valve handle gas path is smooth functional device is done quickly the action of the drain, filter, vacuum, and silencers, the protective kit is full of fresh air for disaster prevention in the life-saving breathing. The air pressure of the protection kit for (0.05 ~ 0.1) Mpa toxic gas pressure is lower than outside the protective cover comprising a pressure of external harmful gases will not enter the protective kit for disaster prevention personnel harm. 

 The main technical indicators: 

 Project technical parameters 

 System supply pressure (0.3-0.7) MPa. 
 System gas supply (30-110) L / min 
 Method of air ground system gas 
 Pressure adjustment range (0.05-0.1) MPa. 
 Silencer 85dB 
 Protective manner shawl protection 
 The weight 5.5.8kg / group 
 Dimensions air pressure, self-help device Φ35 × 265mm 
 Shawl protective cover 920 × 1030mm 
 Pipeline Φ33 × 500mm