Fracture analysis and optimization of the slotted vortex finder cyclone core tube blade

Abstract

Cyclone separators are extensively utilized in industry because of their significant role in reducing energy consumption and environmental pollution. Among them, the slotted vortex finder cyclone separator has received wide attention due to its ability to improve the flow of gas and solid phases and to increase the separation efficiency. However, its core tube blades have been bent and fractured during operation, which affects the production efficiency. In this study, a combination of numerical simulation and experimental is used to analyze the fatigue failure mechanism and fracture causes of the core tube blades of the slotted vortex finder cyclone separator. Through experimental observation and numerical simulation methods, the effects of different core tube blade structures on torque and separation efficiency are discussed in detail, aiming to improve their durability and separation performance. The findings indicate that an increase in the number of side seams can effectively reduce the torque exerted by the leaf. An increase in the number of side seams to 16 results in the highest level of particle separation efficiency. Furthermore, an increase in side seam height has a notable effect on the torque and separation efficiency of the blade. The optimal separation efficiency is achieved when the side seam height is 200 mm. Moreover, an increment in the angle of the side seam leads to an augmentation in both the torque and the separation efficiency of the blade. This study offers a scientific foundation for comprehending the fatigue failure mechanism of the slotted vortex finder cyclone separators and provides guidance for the design of more efficient and durable cyclone separators.