Research On Wood Dust Diffusion And Control Technology In Furniture Polishing Process

In recent years,wooden furniture has gradually entered people’s lives.The wood dust produced by furniture manufacturers is both combustible and organic dust,which is prone to fire and explosion.At the same time,if the human body inhales it for a long time,it can cause lung cancer and other diseases.At present,most of the grinding process operation tables of enterprises are basically distributed in a row.Although ventilation facilities are set up,the control effect is very poor.Therefore,the research work in this article is mainly from the perspective of practical application,and the dust concentration and airflow movement are studied by taking the dust in the furniture grinding room with different number and position distribution of the operating table as the research object.First of all,according to the situation of the field investigation,the dust concentration and airflow velocity of the grinding station shall be sampled on the spot.Secondly,a physical model is established according to the geometric model of the current grinding chamber,and the control equation of the numerical theoretical model is determined.Then,in the natural ventilation stage,numerical simulation is carried out on the model with one console,three consoles arranged in a triangle,four consoles in a square layout,and five consoles in a regular pentagonal layout.Analyze the dust concentration distribution law and air movement characteristics under different conditions in the room,and provide decision-making reference for controlling the wood dust in the polishing room.Use a side suction hood for a console,study the influence of factors such as the average wind speed of the hood,the height of the hood,and the size of the hood on the dust diffusion,and determine the best working condition for dust control when a single console is used.When using lower suction hoods for three operating stations,study the wood dust diffusion and air distribution in the grinding room under different influencing factors,and determine the most economical and environmentally friendly combination of process parameters for controlling dust diffusion when the three operating stations are triangularly distributed.The control of indoor dust provides reference for decision-making.Through the analysis of the simulation results,it can be seen that in the natural ventilation stage,the number and distribution position of the console not only affect the diffusion of dust but also affect the movement of the indoor airflow.As the number of consoles increases,the height of the peak dust concentration is lower.The degree of air turbulence is three sets>four sets>five sets>one set.In the case of natural+mechanical ventilation,when a side suction hood is used on a console,the higher the average wind speed of the hood,the lower the dust concentration in the room;the height of the hood is set at 0.6m to collect dust more effectively.And the higher the height of the hood,the smaller the effective area of the exhaust fan;the relationship between the size of the hood and the dust control effect is 1m×1m>0.8m×0.8m>1.2m×1.2m,the size of the hood has an effect on the indoor airflow organization The influence is weak;the best working conditions are the average wind speed of the hood is 5.25m/s,the size of the hood is 1m×1m,and the height of the hood is 0.6m.When the three consoles adopt the lower suction hood,the triangular hood can collect dust more effectively,and the shape of the hood does not have an obvious influence on the indoor air flow rate;setting the height of the hood at 0.6m is more effective for dust collection and at the same time.The influence of the air distribution in the area near the platform is weak;the greater the ventilation,the lower the dust concentration,and the more obvious the influence on the indoor air distribution.The best dust removal working condition for three operating tables is a triangular hood with a ventilation volume of 20000m~3/h and a hood height of 0.6m.