Structural Optimization of Cyclone Pre-dust Collector in Mine Crushing Workshop

Abstract: This paper mainly discusses the structural optimization of cyclone pre-dust collector in mine crushing workshop. By analyzing the problems existing in the application of existing cyclone pre-dust collector in mine crushing workshop, the structure is optimized by combining theoretical analysis, numerical simulation and experimental research to improve dust removal efficiency, reduce energy consumption and meet the environmental protection and production requirements of mine crushing workshop.

Introduction

A large amount of dust is generated in the production process of the mining crushing workshop. As a commonly used dust removal equipment, the performance of the cyclone pre-dust collector directly affects the dust control effect and production environment of the workshop. However, in practical applications, traditional cyclone pre-dust collectors often have problems such as low dust removal efficiency and high energy consumption. Therefore, it is of great practical significance to optimize their structure.

Working principle and structural analysis of cyclone pre-dust collector

- Working principle: After the dust-laden gas enters the cyclone pre-dust collector tangentially, it rotates in the cylinder. The dust particles are thrown to the wall of the device under the action of centrifugal force, and then fall into the ash hopper under the action of gravity. The purified gas is discharged from the exhaust pipe.

- Structural analysis: The cyclone pre-dust collector is mainly composed of an air inlet, a cylinder, a cone, an exhaust pipe and an ash hopper. The shape and size of the air inlet affect the gas entry mode and velocity distribution; the size of the cylinder and cone determines the rotation space and centrifugal force of the airflow; the insertion depth and diameter of the exhaust pipe affect the discharge effect of the purified gas; the design of the ash hopper is related to the collection and discharge of dust.

Problems of cyclone pre-dust collector in mine crushing workshop

- Dust removal efficiency needs to be improved: Due to the high dust concentration and wide particle size distribution in mine crushing workshop, the existing cyclone pre-dust collector has poor capture effect on fine dust particles, resulting in excessive dust content in the exhaust gas.

- Large pressure loss: The unreasonable structural design makes the gas flow resistance in the dust collector large, increases the energy consumption of the fan, and increases production costs.

- Severe wear: Mine dust is highly abrasive, and long-term operation will cause wear of the inner wall, air inlet and other parts of the dust collector, affecting the service life and performance of the equipment.

Structural optimization measures for cyclone pre-dust collector

- Optimization of air inlet structure: Change the traditional rectangular air inlet to an involute air inlet, so that the gas can form a rotating airflow more smoothly after entering the dust collector, reduce the generation of airflow turbulence and vortex, and improve the separation effect of centrifugal force on dust particles.

- Optimization of cylinder and cone size: According to the processing air volume and dust characteristics, the cylinder diameter and height and cone angle are reasonably adjusted. Appropriately increasing the cylinder diameter can reduce the gas rotation speed and reduce the wear of the air flow on the wall; optimizing the cone angle can make the dust fall into the ash hopper more smoothly under the action of gravity, thereby improving the dust removal efficiency.

- Exhaust pipe optimization: Through numerical simulation, the influence of the exhaust pipe insertion depth and diameter on the dust removal efficiency and pressure loss is studied, and the optimal exhaust pipe parameters are determined to reduce the dust entrainment in the purified gas.

- Add wear-resistant measures: Wear-resistant materials are used to protect the inner wall and easily worn parts of the dust collector, such as pasting ceramic sheets or spraying wear-resistant coatings, to improve the wear resistance of the equipment and extend its service life.

Optimization effect verification

- Numerical simulation: Computational fluid dynamics (CFD) software was used to numerically simulate the internal flow field of the cyclone pre-dust collector before and after optimization, and the parameters such as air flow velocity, pressure distribution and dust particle movement trajectory were compared and analyzed. The results show that the internal flow field of the optimized dust collector is more uniform, the centrifugal field is stronger, and the separation effect of dust particles is significantly improved.

- Experimental study: The optimized cyclone pre-dust collector prototype was made and experimentally tested in the mine crushing workshop. The test results show that the dust removal efficiency of the optimized dust collector is increased by [X]%, the pressure loss is reduced by [X]%, and the wear of the equipment is significantly improved.

Conclusion

Through the structural optimization of the cyclone pre-dust collector in the mine crushing workshop, the dust removal efficiency is effectively improved, the pressure loss and equipment wear are reduced, and the environmental protection and production requirements of the mine crushing workshop are met. In practical applications, the structural design of the cyclone pre-dust collector should be further optimized and improved according to specific working conditions to achieve better dust removal effect and economic benefits. At the same time, with the continuous development of technology, we can explore the introduction of intelligent control technology into cyclone pre-dust collectors to achieve automatic adjustment and optimized operation of the equipment, and provide more reliable technical support for dust control in mine crushing workshops.