Low-noise mine local ventilation fan, controlling fan noise below 75 decibels, technology leading the way, being an environmental expert in industrial mine ventilation fans.

Front and rear double silencing structure

The FBD series low-noise front and rear double silencing structure is based on the conventional FBD series explosion-proof pressure-type contra-rotating axial flow local ventilation fan, with the addition of an inlet silencer to achieve a double silencing structure at the inlet and outlet. This fan consists of a collector, inlet silencer, primary host, secondary host, outlet silencer diffuser, and explosion-proof motor; this ventilation fan features high flow rate, high air pressure, high efficiency, and low noise. It is well-designed, uses advanced technology, and features energy saving, low noise, serialization, simple structure, easy maintenance, and strong applicability.

Environmentally friendly, convenient, detachable low-noise axial flow local ventilation fan structure

Considering that the environmentally friendly FBD low-noise axial flow local ventilation fan, due to long-term operation in environments with high coal dust or dust, will have a large amount of dust or coal ash inside the silencing layer after long periods of operation, and a large amount of dust or coal ash adhering to the silencing material will greatly reduce the noise reduction effect, and cleaning the original structure is difficult. Therefore, our company has developed a new convenient and detachable hexagonal environmentally friendly FBD low-noise axial flow local ventilation fan structure;

This structure adopts a three-dimensional hexagonal structure, uses automated edge folding technology, and independent design methods, making it convenient for users to replace the silencing material later; this structure is simple to disassemble and easy to install, meeting users' noise reduction requirements for the fan, and overcoming the problem of cleaning and replacing the noise reduction material after pollution, making it convenient, practical, and cost-effective.

Environmentally friendly low-noise local ventilation fan structure

The environmentally friendly FBD mine explosion-proof axial flow local ventilation fan reduces various frequency noises to below 85 to 80 decibels, protecting the physical and mental health of workers, improving the underground working environment, and achieving environmentally friendly mine ventilation.
The environmentally friendly local fan is a new product improved and designed based on the side-inlet low-noise local fan, with noise below 80 decibels. The noise reduction measures adopted by the low-noise 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 mid-low 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 selection, modification, and solutions.

Environmentally friendly FBD low-noise axial flow local ventilation fan

Local ventilation fans are essential ventilation equipment in the mining and excavation production process of coal mines, especially the FBD series of mine explosion-proof pressure-type contra-rotating axial flow local ventilation fans, which are not only widely used in the pressure-type long-distance ventilation of large and small cross-section roadways in coal mine underground mining, but also in the ventilation and ventilation of industrial fields such as metallurgy, petrochemicals, power, railways, and highway tunnels. This series of ventilation fans is a ventilation fan for excavation construction that is reasonably matched with the ventilation parameters of coal mine roadways. This series of fans features high flow rate, high air pressure, and high efficiency. However, during the operation of the ventilation fan, harsh aerodynamic noise and mechanical noise will be generated, which has affected the physical and mental health of the staff during the coal mine production process. Currently, most of the commonly used local fans use double-layer casings filled with sound-absorbing materials to reduce noise, but the overall radiated noise of the fan during operation is greater than 100dB(A), which cannot meet the customer's requirements for low noise.

To this end, our company has developed environmentally friendly ventilation fans with low noise and ultra-low noise, reducing the various frequency noises of the fan to below 85 to 80 decibels, protecting the physical and mental health of on-site personnel, improving the underground working environment of the mine, and achieving environmentally friendly air supply. We have adopted multiple noise reduction measures, based on the aerodynamic principles of the fan and the principles of noise generation and propagation, adding streamlined air intake silencing devices and inlet and outlet composite silencing tubes, optimizing the structural design of the fan host, and using high-quality silencing materials to better absorb mid-low frequency noise and efficiently isolate high-frequency noise, so that the overall noise of the fan is eliminated and attenuated.