Successful delivery of intelligent variable frequency ventilation fans and local ventilation fans for Hong'er Coal Mine

Shanxi Jinyuan Anfeng Fan Co., Ltd. has always focused on technological investment and product upgrades over the years. It has cooperated with Xi'an Jiaotong University, the Chinese Academy of Sciences, Shanxi Mining Institute, and other scientific and technological institutions, and has long-term employed more than a dozen ventilation fan experts and professors as technical consultants for the company to design and develop products to ensure product safety, reliability, and advancement. For example: For blade design, we further improve the advanced three-dimensional twisted blade type of aero-dynamic three-element flow theory in the bending and sweeping orthogonal combination, through computer flow field calculation analysis, and model machine experiments and tests, launching a new type of twisted blade applied to local ventilation fans; making the fan performance more superior, energy-saving effect more obvious, and noise reduction at the same time.

The side-inlet air silencing device, combined with the inlet and outlet silencers, significantly reduces noise. At the same time, the silencer material uses oil-immersed glass fiber felt, which has anti-static and flame-retardant functions. Starting from the design, the fan takes measures from three aspects: aerodynamic noise, motor electromagnetic noise, and mechanical noise, effectively reducing the operating noise of the fan; the noise complies with JB/T8690-2014 "Industrial Ventilation Fan Noise Limits".

Product Features

Underground local ventilation fans for coal mines are essential equipment for safe coal mine production. When the fan is running, it will produce harsh aerodynamic and mechanical noise. Noise pollution has become the third largest public hazard after air and water pollution. Currently, most of the noise reduction methods for domestic local fans are to fill the double-layer shell with absorbing materials, and the overall radiated noise of the fan is greater than 100dB(A). We can provide users with better solutions for transformation and selection.

The design philosophy of the environmentally friendly local fan developed by Shanxi Jinyuan Anfeng Fan Co., Ltd. is to reduce various frequency noises to below 80 decibels, protect the physical and mental health of workers, improve the underground working environment, and achieve environmentally friendly ventilation in mines. The noise reduction measures adopted by the environmentally friendly local fan are based on the principle of noise generation and propagation, changing the air intake direction, optimizing the structural design, and through better adsorption of low and medium frequency noise and efficient isolation of high frequency noise, the overall noise of the fan is eliminated and attenuated. The modular design composed of various silencing components can provide users with better transformation and selection solutions.

In recent years, the company has successively won honorary titles such as "Yuncheng Enterprise Technology Center", "Yuncheng Excellent Enterprise", "Yuncheng Intellectual Property Demonstration Enterprise", and "Innovative Small and Medium-sized Enterprise". The company has passed the "ISO9001 Quality Management System Certification", "ISO14001 Environmental Management System Certification", "ISO45001 Occupational Health and Safety Management System Certification", and the products have passed the "China National Mandatory Product Certification", and obtained a number of patents. With advanced process equipment, strong technical strength, excellent product quality, and a perfect service system, it has won unanimous recognition and praise from a large number of users, especially in recent years, the green and environmentally friendly low-noise fans that have been focused on the market have achieved rapid development, becoming a well-known enterprise with leading technology in the fan industry.

Raw material procurement: The plates must have a material inspection report for this batch of plates, and strictly control their mechanical properties. The motor must have a product qualification certificate, explosion-proof qualification certificate, dynamic balance test report, and performance test report.

Key components are set as key process control points: The blades are made of high-quality carbon steel, pressed, welded, and corrected by special molds. Special process treatment ensures that the profile of the blades after forming matches the design. The hub must undergo flaw detection to ensure the overall quality of the impeller.