Experimental study on the flow field and atomization characteristics of a new combined spray dust suppression device
Spray dust reduction is a conventional technical means of industrial dust control.The traditional spray dust reduction technology has the defects of low dust reduction efficiency,large water consumption,and inability to achieve long-distance dust reduction.In this study,a new type of combined spray dust suppression device was proposed.Based on the self-designed gas-water spray experimental platform,the airflow field distribution law,the spatial distribution law of atomization particle size,and related influencing factors of the new device were experimentally studied.The results show that the combined spray dust reduction device can blow the spray to a distant dust reduction area to achieve long-distance dust reduction.The tail of the device can suck the dust-containing gas around it and spray it with the droplets to achieve the secondary dust reduction effect.With the increase of gas supply pressure,the velocity of the combined spray dust suppression device increases in the form of a power function.With the increase of distance,the velocity of the device decreases exponentially from the outlet along the downstream.The negative pressure increases with the increase of the gas supply pressure,and the amount of suction generated at the tail of the device increases with the increase of the gas supply pressure.With the increase of gas supply pressure,the range of the device continuously increases,and the increase of water supply pressure has little effect on the range of the device.The droplet size increases first and then decreases with the increase of air supply pressure,and the droplet size at different positions along the axis direction shows the same change rule.When the air supply pressure is constant,the droplet size of the device decreases with increasing the water supply pressure.Considering comprehensively,when the combined spray dust suppression device is applied in the field,the gas supply pressure and water supply pressure are 0.4 MPa and 2.0 MPa respectively,which is more reasonable.
万方数据
维普
