# Study on the Influence of Dust Removal Fan Structure Parameters on Dust Removal Performance
## 1 Introduction
[18] established an experimental device to study the influence of factors such as the thickness of porous media, liquid-gas ratio, and water level height on the performance of porous media wet dust collectors in collecting fine particles. The above research examines the dust removal principle of the internal structure of the dust removal fan and analyzes the influence of factors such as impeller speed and water intake on dust removal efficiency through experiments but does not modify the structure of the dust removal fan to investigate dust removal performance under different structural parameters. Many scholars have utilized the discrete phase model to simulate the dust removal process inside dust removal fans [19; 20]. [PERSON] et al. [21; 22] employed FLUENT software to simulate the three-phase flow field of wet dust removal fans and analyzed the effects of dust particle size, liquid-gas ratio, fan speed, and other operating parameters on the dust removal efficiency of wet dust removal fans. [PERSON] et al. [23] used the FLUENT discrete phase model to simulate and study the motion trajectory and deposition characteristics of oily particles in a multi-wing centrifugal fan, exploring the influence of particle diameter on deposition distribution. [PERSON] et al. [24] simulated and analyzed the flow field, pressure, and dust removal efficiency of cyclone dust collectors based on the discrete phase model. [PERSON] et al. [25] employed FLUENT softwareto conduct gas-liquid-solid three-phase numerical simulations of the internal flow field of downhole wet precipitators and analyzed the distribution of the internal flow field. [PERSON] et al. [26] utilized CFD software to simulate particle trajectories in the solid-phase flow field inside radial straight blade wet cyclone dust collectors, obtaining the relationship between particles with different sizes and separation efficiency under different inlet wind speeds. [PERSON] et al. [27] used FLUENT 14.0 software to numerically simulate the three-phase coupled flow field under the working state of wet swirl dust removal fans for mining and analyzed the influence of factors such as driven impeller speed and particle size distribution on dust removal efficiency. The aforementioned research numerically simulates the dust removal efficiency of dust removal fans through the discrete phase model; however, the exploration of dust removal efficiency under different structural parameters remains insufficiently deep. It can be observed from the above references that there are currently two main research methods for dust removal fans: physical testing and numerical simulation. Among these, physical testing is highly reliable, but it is often challenging to study and analyze due to the requirement of setting multiple sets of dust removal fan structural parameters. Numerical simulation of dust removal fans encompasses two approaches: altering the structural parameters to simulate the fan's aerodynamic performance and using the discrete phase model to simulate dust removal efficiency. Present research tends to concentrate on one of these methods. In this paper, the Computational Fluid Dynamics (CFD) method is employed to numerically simulate and analyze the influence of the driving impeller, driven impeller, rear guide vane, swirl guide vane, and outlet section on the dust removal performance of wet dust removal fans for mining. By modifying the number of driving impeller blades, the airfoil of driving impeller blades, the number of driven impeller blades, presence or absence of rear guide blades and swirl guide blades, and the length of the outlet section, different dust removal fan impeller models were established and numerically simulated. The influence of structural parameters on the dust removal performance of wet dust removal fans for mining was analyzed through indicators such as total pressure efficiency, static pressure efficiency, and dust removal efficiency. This provides a valuable reference for subsequent related research and practical engineering applications.