Structural Design And Optimization Of Dust Collection System And Vacuum Cleaning System Of Sweeping Truck

The urban road sweeper is a special vehicle used for garbage cleaning,garbage collection and garbage transportation.It has the advantages of high work efficiency,simple operation,energy saving and environmental protection,and is widely used in urban daily road cleaning work.The vacuum system and dust collection system are the key execution systems of urban road sweepers.The structural design level determines the working capacity and work efficiency of the sweeping vehicle.It is the key to the development and innovation of the urban road sweeping vehicle industry.Analysis of the working object of the sweeper-a mixture of air and dust particles.The dust particles are classified according to shape,density and particle size,and aerodynamic analysis is carried out respectively.The flow field conditions in which the dust particles are sucked by the suction nozzle and the flow field conditions in which the dust particles meet the settlement requirements in the dust box are obtained.Establish a parametric model of the vacuum system,analyze the influence of the value of each key structural parameter of the vacuum system on the flow field of the vacuum system,and then combine the empirical values of the key structural parameters of the vacuum system to determine the optimization parameters.According to the optimization parameters,the simulation model of the vacuum system is established and the flow field analysis is carried out.The flow field distribution in the vacuum system before and after optimization is compared and analyzed to verify the effectiveness of the optimization design.A parametric model of the dust collection system was established to analyze the flow characteristics of the gas-solid two-phase flow in the dust collection system.Using the extended linear regression model,the flow non-uniformity of each filter cartridge is optimized,and the structural parameters of the baffle of the dust collection system are used as independent variables to identify the flow unevenness and dust collection between the filter cartridges in the dust collection system.The mode between the structural parameters of the system deflector,the optimal value of the flow unevenness of each filter cartridge and the corresponding optimal structural parameters of the deflector are extracted.The flow field distribution characteristics in the dust collection system under the optimal structural parameters and initial structural parameters of the deflector are compared and verified,and the effectiveness of the optimized design is verified.Design the experimental platform,introduce the experimental instruments and experimental methods,measure the physical quantity(flow rate,static pressure,dynamic pressure)of each measuring point of the vacuum system under different working conditions,analyze the test data,and draw relevant graphics.The effectiveness of the optimized design is verified by analyzing the related graphs.And on this basis,the economic speed of the fan under different working conditions is proposed.