关键字 轴流通风机 局部通风 防爆
Abstract
In underground mining, A large number of poisonous gas eruption out, and easy to cause an explosion of coal dust, They threat the staff of the underground mine safety. In order to protect the mine workers have a safe, reliable and good working conditions, It must transport adequate to the number of underground of fresh air to dilute the concentration of harmful gases and dust of the dust. So I designed.
The fan in accordance with the volume of flow, such as designing ring-shaped impeller for axial fan aerodynamic calculation., that is, such as the design method of equal circulation. According to the design parameters that what is given by and the design requirements, The specific content including: choice of ventilation; the determination of the overall structure of the program; impeller design; sparse cover flow; diffusion flow; and set design and choice of the design of fan noise reduction device. Pay more attention to the design of the rotary fan noise issues, and design of the reduce noise.
Key words Axial-flow fans Local ventilation Explosion-proof