Jinyuan Anfeng has long focused on technological investment and product upgrades. It has collaborated with Xi'an Jiaotong University, the Chinese Academy of Sciences, Shanxi Mining Institute, and other scientific and technological institutions. The company also employs over ten ventilation experts and professors as long-term technical advisors, responsible for product design and R&D to ensure product safety, reliability, and advancement. For example, in blade design, we further improve the advanced three-dimensional twisted blade type of aero-dynamic three-element flow theory by combining bending and sweeping orthogonal types. Through computer flow field calculation and analysis, model machine experiments, and testing, we have launched a new twisted blade for local ventilation, resulting in superior fan performance, more significant energy savings, and reduced noise.

The side-inlet silencing device, combined with the inlet and outlet silencers, significantly reduces noise. The silencer material uses oil-immersed glass fiber felt, which is anti-static and flame-retardant. The fan design addresses aerodynamic noise, motor electromagnetic noise, and mechanical noise to effectively reduce operating noise, meeting the JB/T8690-2014 standard for industrial ventilation fan noise limits.

Product Features

Underground local ventilation fans are essential equipment for safe coal mine production. Operating fans generate harsh aerodynamic and mechanical noise. Noise pollution is now the third largest public hazard after air and water pollution. Most domestic local ventilation fans use sound-absorbing materials filled in double-layer casings. The overall radiated noise of the fan is greater than 100dB(A). We can provide users with better solutions for modification and selection.

Shanxi Jinyuan Anfeng Fan Co., Ltd.'s design philosophy for environmentally friendly local ventilation fans is to reduce noise of all frequencies to below 80 decibels, protecting workers' health, improving the underground working environment, and achieving environmentally friendly mine ventilation. Noise reduction measures include changing the air intake direction, optimizing the structure, and better absorbing low-frequency noise and effectively isolating high-frequency noise to eliminate and attenuate overall fan noise. The modular design, composed of various silencing components, provides users with better solutions for modification and selection.

Shanxi Jinyuan Anfeng Fan Co., Ltd. strictly adheres to the ISO9001 international quality system standard and, based on the company's actual situation, has established strict regulations for every process related to the product, from raw material procurement, product design, manufacturing, inspection, and testing. This includes process tracking, process records, and quality control points for key processes, with inspections conducted through self-inspection, mutual inspection, and specialized inspection.

Raw Material Procurement: Sheet materials must have a material inspection report for the batch, strictly controlling their mechanical properties. Motors must have product qualification certificates, explosion-proof certificates, dynamic balance test reports, and performance test reports.

Key Components: Process control points are established for key processes. Blades are made of high-quality carbon steel, pressed, welded, and corrected using special molds. Special processing ensures that the blade profile after forming matches the design. Hubs must undergo flaw detection to ensure the overall quality of the impeller.