Research On The Spraying Characteristics And All-Terrain Mounted Nano TiO₂Spraying Device

In recent years, with the rapid development of the national economy, the atmosphere environment pollution is increasing. Along with the enhancement of the public environmental awareness, vehicle exhausts emission standards and regulations more strictly. Today the automobile industry and the transportation are developing rapidly, people to raise new requirement ceaselessly on purifying automobile exhaust. TiO2nanometer photocatalytic of material management can using in degradation of automobile exhaust pollution, the TiO2nanometer photocatalytic material is sprayed on the road facilities, can quickly purification automobile exhaust to reduce the pollution of the environment. The design of nanometer TiO2spraying machinery and research of spraying performance can improve the spraying quality; achieve the goal of make full use of nanometer TiO2.Based on the current spraying machine of domestic and foreign which main application areas are agricultural and forestry irrigation and spraying, compared to water and pesticides, considering the TiO2nanometer photocatalytic degradation of material's viscosity, moisture, surface tension have bigger difference, which vehicle spray equipment be used to spray the photocatalytic degradation of nanometer TiO2material has not been solved. In this paper, in order to improve the TiO2nanometer photocatalytic degradation of material spraying uniformity and spraying quality, all-terrain vehicle as the main carrier, designed for nanometer TiO2spraying equipment, based on this equipment,spraying equipment and spraying characteristics of systematic and theoretical analysis.The all-terrain vehicle nano-TiO2spraying equipment is designed firstly in this paper firstly. The equipment is consisted of liquid a flow mechanism and a mechanical mechanism. According to the characteristics of nanometer TiO2materical to choose the nozzle, pipe layout, pipe length and diameter, branch pipe pressure. A dynamic model of full-load condition all-terrain vehicle nano TiO2spraying equipment is establishment and the equiment's stability is analysis.Secondly, the Delaunay triangulation method and MATLAB scientific computing software are used for analysising the all-terrain vehicle spray equipment spraying characteristics at different speeds. Based on the plane all-terrain vehicle TiO2anometer spraying point's data distribution uniformity, the method of three order spline interpolation is used to convert the data of the nozzle spray distribution to a grid type. Based on model of the square and triangular combination nozzle, the spraying characteristics of theoretical is analysis, which based on the software indicated that under the same spraying control area, the square combination more uniformy than triangular layout spraying quantity distribution, the uniformity of square that is higher than that of triangular uniformity.A method of computer simulation is used to fit the the TiO2droplet trajectory which spray out from the all-terrain vehicle nano TiO2spraying equipment, based on the computer simulation to curve fitting. A mathematical model is established and a suitable fitting function is selected to put forward for nanoTiO2spraying data feature points and4cases of speed of spraying droplet trajectory are curved fitting. After comparison of4kinds of case the distribution, it is obtained spraying points more uniformity when spraying at speed2.0m/s (7.2km/h).Finally, based on the references, a performance evaluation system is built preliminary for evaluate the all-terrian vehicle TiO2spraying equipment. The evaluation is set based on the technical performance indicators, economic performance and spraying equipment energy consumption index. The all-terrian vehicle TiO2spraying equipment work efficiency and the applicator was evaluated by using the established evaluation index system.A full set of nanometer all-terrian vehicle TiO2spraying equipment is assembled and designed in this paper for the first time in the whole region. Based on the theoretical analysis, simulation and the theoretical analysis, the whole all-terrian vehicle nano TiO2spraying equipment had a good spraying performance based on the comparison of four kinds of speed case spraying uniformity and spray characteristics.Based on photocatalytic degradation of nanometer TiO2material and spraying method, the all-terrian vehicle TiO2spraying equipment has a good spraying performance, was the first attempt of evaluation for the equipment, which has important theory significance and application value.