# Study on the Influence of Dust Removal Fan Structure Parameters on Dust Removal Performance
## 1 Introduction  
China is rich in coal resources, and coal, as the main energy source in our country, plays an important role in economic development. With the increasing level of mine intelligence, mechanization, and automation, the potential hazards of gas, coal dust, fire, and other disasters have increased. Especially concerning is the issue of dust pollution in mines, which leads to the deterioration of underground air quality and causes workers to suffer from pneumoconiosis. Additionally, dust accumulation can easily lead to explosion accidents, severely impacting enterprise safety. Furthermore, it poses a significant threatto the occupational health of workers [1]. A fan is an essential key component in the underground dust removal system. However, traditional fans only provide power for the airflow in the dust removal system and do not directly participate in dust removal. On the other hand, wet dust removal fans are equipped with spray dust removal devices, enabling them to directly remove dust inside the fan, thus significantly enhancing dust removal efficiency [2; 3; 4]. The main components of wet dust removal fans include driving impellers, driven impellers, rear guide vanes, swirl guide vanes, etc., whose structural parameters greatly affect dust removal performance [5]. Many scholars have studied the influence of structural parameters of axial flow fans and dust removal fans on aerodynamic performance through fluid simulation software. [PERSON] [6] conducted simulation tests using FLUENT software by altering key structural parameters of axial flow in rotary dust removal fans and investigated their impact on working performance. [PERSON] et al. [7; 8] analyzed the influence of structural parameters such as impeller hub ratio, blade number, blade installation angle, blade chord length, blade twist angle, and impeller radial clearance on the performance of the mining KJS-Y dust removal fan using FLUENT software. [PERSON] [9] utilized CFX software to calculate the aerodynamic performance parameters of the rotor blade of the dust removal fan at different installation angles. [PERSON] et al. [10] employed the large eddy simulation method to numerically simulate a two-stage variable pitch axial flow fan with zigzagged flaps and studied the influence of the new blade on the aerodynamic performance, noise characteristics, and internal dynamics characteristics of the fan. [PERSON] et al. [11] focused on the FBD No.8.0 mine counterrotating fan and studied the effect of blade angle on fan performance through orthogonal tests and numerical simulations. [PERSON] et al. [12] used numerical simulation to investigate the influence of bionic butterfly blades with different depression depths on the aerodynamic performance of air conditioning axial fans. In the aforementioned research, the total pressure, static pressure, and total pressure efficiency of the dust removal fan are considered as evaluation indexes of dust removal performance, but the dust removal efficiency is not numerically simulated. Concurrently, scholars have explored the factors affecting the performance of the dust removal fan through experimental methods. [PERSON] et al. [13] analyzed the working principle of the wet cyclone dust extractor and the dust removal process of new impellers, cyclone blades, and other structures. [PERSON] et al. [14; 15; 16] conducted dust removal and dewatering performance tests of a wet scroll dust collector using a dust collector purification performance test platform and studied the dewatering effect of the dust collector under different water consumption rates and the dust removal effect at different concentrations. [PERSON] et al. [17] investigated the influence of water intake and impeller speed on the dust removal efficiency of a wet cyclone dust collector through experiments. [PERSON] et al.