Research On Numerical Simulation Of Airflow Organization In Furniture Spray Booth Of Wooden Furniture

In recent years,due to the rapid development of China's industry,the total amount of domestic furniture has continued to increase and develop.With the wide application of spray booths in the furniture field,the demand for large spray booths in the furniture manufacturing industry continues to grow.However,in the furniture spraying process of the furniture industry,there are many harmful factors,mainly benzene,formaldehyde,aniline and other highly toxic substances,and many furniture manufacturing enterprises have a harsh construction site environment,and there are serious problems such as high toxic substances.Therefore,the research work in this paper is mainly from the perspective of practical application,and uses the toluene gas common in wooden furniture spray booths as the research object and CFD method as the research method,combined with experimental testing and numerical simulation to calculate the velocity field,The temperature field and concentration field were studied,and the distribution of toluene velocity field,concentration field and temperature field in the indoor airflow organization under different conditions were analyzed through research.The gas velocity,The influence of concentration and temperature on the airflow organization in the spray booth,an optimization plan for the airflow organization structure in the spray booth was proposed.The details are as follows:First,the gas velocity,concentration,temperature,etc.are measured at the selected measuring point inside the spray booth,and the distribution law of the gas velocity,concentration,and temperature inside the spray booth is obtained.Based on the analysis and comparison of the concentration of toluene in the on-site furniture spray booth and the permissible concentration of workplaces in relevant national laws and regulations,the hazards of the wooden furniture spray booth were studied.Secondly,according to the geometric model and air supply method of the current spray booth,and the turbulence numerical simulation theory,the control equations of the numerical theoretical model such as the concentration field and velocity field of the spray booth are determined,and the boundary conditions and initial Conditions make assumptions.Then use FLUENT numerical simulation software to establish a physical model for a wooden furniture spray booth,and numerically simulate the indoor toluene gas concentration field and velocity field to obtain the distribution of toluene gas concentration field and velocity field in different environments in the spray booth.Analyze and study the feasibility of CFD simulation technology in indoor air distribution simulation.Then,the CFD simulation technology is used to perform numerical simulation analysis on the concentration field and velocity field of indoor pollutants in the wooden spray booth.Based on the original physical model,the air supply speed of the spray booth,the location of the air outlet and the pollution location are changed.When conditions such as the amount of air supply,the amount of exhaust gas,and the source position change change,the speed,temperature,concentration,and distribution characteristics of the airflow organization at the standing position of the human body.In the spray booth,a more suitable human body construction solution was obtained with low toluene concentration.That is,the FLUENT numerical simulation technology is used to study the distribution characteristics of toluene temperature field,velocity field and concentration field in the indoor environment,which provides reference for indoor pollutant control decision-making.Then the FLUENT software is used for numerical simulation of the distribution of indoor air distribution in the furniture spray booth.The software is used to simulate the air distribution in the spray booth under different ventilation modes,and the indoor air distribution and ventilation performance under different air supply forms are compared.Compare indoor air quality and ventilation performance under different factors(such as air supply speed,air supply form,indoor temperature,etc.).On this basis,the air flow organization of the spray booth is optimized,and the optimized spray booth is optimized for process parameters.On the basis of ensuring that the speed and temperature of the spray booth meet the design requirements,the spray booth is found.The air flow organization is more environmentally friendly and more energy-saving combination of process parameters.Finally,the experiment and numerical simulation technology are combined to provide quantifiable and easy-to-operate suggestions for the furniture coating process,and a feasible plan for occupational hygiene requirements,that is,to provide reference for indoor pollutant control decisions.