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针对目前井下综掘面粉尘治理难的问题,研制了一种新型风幕集尘除尘系统。其中风幕风机的风速、除尘风筒的结构尺寸及出口压力是影响整个系统集尘除尘效果的决定性因素。为使风幕集尘除尘系统的防治粉尘效果达到最优,通过计算流体力学FLUENT软件,分析风幕风机风速、除尘风筒直径及出口压力改变的条件下风机的表面空气流线以及粉尘颗粒轨迹。得到风机风速、除尘风筒的直径及出口压力对整个系统集尘除尘效果影响的规律。结果表明:单方面增加风幕风机的风速或出口压力时,系统的集尘除尘效果在一定范围内可以变好,但是超过一定范围之后,风速的增加或者出口压力的增大反而使系统集尘除尘效果变差;在其他条件不变的情况下,除尘风筒直径越大系统集尘除尘效果越好。
In view of the difficulty of harnessing dust in fully mechanized mining face underground, a new type of wind screen dust collecting and dust removing system is developed. Among them, the wind speed of the air curtain fan, the structure size of the dust collecting duct and the outlet pressure are the decisive factors that affect the dust removal efficiency of the entire system. In order to optimize the dust control effect of air curtain dust collection and dust removal system, FLUENT software was used to analyze the surface air flow and the particle trajectory of the air blower under the conditions of changing wind speed, diameter and outlet pressure of air curtain fan, . Get the fan speed, the diameter of the dust tube and outlet pressure on the entire system dust collection effect of the law. The results show that the dust collection efficiency of the system can be improved within a certain range when the wind speed or outlet pressure of the air curtain fan is increased unilaterally. However, when the wind speed exceeds the specified range or the outlet pressure increases, Dust removal effect worse; in other conditions remain unchanged, the greater the diameter of the dust tube dust collection system dust collection effect.