Experimental study on vibration response of flotation machine under inflating volume fluctuation based on the fluid-structure interaction

The operating condition of the flotation machine is complex, and the speed, gas volume and feeding are all changing in real time.These changes will have an impact on the internal flow field, and cause the change of the force on the flotation machine impeller, and then affect the reliability of the operating parts of the flotation machine.Therefore, established a fluid-solid coupling experimental platform which can simulate different working conditions on site.Embedded micro pressure sensor and wireless data transmission module are used to detect the pressure change on the impeller blade of the flotation machine in real time.The pressure change detection is used as a means to reveal the pressure change rule on the impeller blade under the condition of inflating volume fluctuation through data analysis.The research has certain guiding significance for optimizing the structure of flotation machine impeller.