Lightweight Design Of Vortex Separation Device For Metal Melt In Fire Field

There are frequent electrical fire accidents in China,and the number of fires caused by various electrical equipment failures has been high,causing a lot of loss of life and property.In order to accurately identify the main causes of such electrical fire accidents and prevent the recurrence of other similar fire accidents,it is necessary to promptly extract metal melt beads and other molten objects in the electrical fire scene as important physical evidence.The vortex separator is the main device for the separation of metal deposits in the fire field,and its importance is self-evident.Traditional eddy current sorting equipment is not only huge in volume,not portable,but also has a very limited application range.Therefore,the lightweight design of the vortex sorter has very important practical significance.In view of the special requirements of the vortex sorter in the fire field environment that requires lightweight design,this paper analyzes the working principle of the vortex sorter and points out the shortcomings in the existing design,and analyzes the impact on the separation ability of the original vortex sorter Related parameters.In order to minimize the weight of the designed sorting machine while ensuring the sorting capacity,a finite element model of the magnetic roller of the core component of the existing eddy current sorting machine was established,and a lightweight design scheme was proposed in principle,and then used The grid search method optimizes the weight of the magnetic roller.In order to analyze the working principle of the eddy current sorter,the static and transient characteristics of the eddy current sorter are analyzed in the finite element software.The static field simulation analysis was used to obtain the laws of the original structure's magnetic induction intensity and magnetic field lines,the influence of the distance of the melted object from the pole surface on the leakage flux density,and the distribution of the leakage flux density at a fixed distance from the pole surface.The transient field simulation analysis was used to obtain the influence of the molten metal beads on the magnetic force line distribution and magnetic induction intensity distribution of the magnetic roller after entering the original structure magnetic field.The influence of size and other laws.In order to minimize the weight of the designed sorter while ensuring the sorting ability,this paper uses the method of finite element and grid search optimization algorithm to compare and analyze the eddy current sorter at different outer diameters,different inner diameters and different magnetic pole pairs In the case of the change of the magnetic induction intensity on the outer surface of the magnetic roller,the structural parameters were optimized for the design.An optimized design scheme for the original eddy current separator was proposed,and the most reasonable structure of the eddy current separator at this stage was obtained.The weight of the sorting machine is reduced,the efficiency of the sorting machine is improved,and the weight is reduced.