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为了提高负压集尘器的降尘效率、进一步改善采掘工作面环境和安全状况,根据喷雾降尘过程中雾粒与粉尘相对运动特点,提出四角旋流布置喷嘴的新型负压集尘器结构,以集尘器喷嘴喷雾压力、喷雾有效作用区长度、喷嘴直径、喷嘴轴向偏转角及纵向偏转角为设计变量,建立目标函数(最大降尘效率)。采用改进的遗传算法和蚁群算法的混合算法(改进的GAAA)对2~8μm不同粒径粉尘的降尘效率进行参数优化,并对降尘效果进行分析和模拟验证。研究结果表明,随粉尘粒径增加,平均降尘效率先增大后减小,耗水量逐渐增大;最优降尘参数组使平均降尘效率达90.7%,提高了6.6%。
In order to improve the dust reduction efficiency of negative pressure dust collector and further improve the environment and safety of mining face, according to the characteristics of the relative movement of fog particles and dust during the process of spray dust reduction, a new negative pressure dust collector structure with four swirl nozzles is proposed Dust collector nozzle spray pressure, effective spray zone length, nozzle diameter, nozzle axial deflection angle and longitudinal deflection angle were used as design variables to establish the objective function (maximum dust reduction efficiency). A hybrid genetic algorithm (GAGA) and ant colony algorithm (GAAA) were used to optimize the dust reduction efficiency of 2 ~ 8μm dust particles, and the dustfall effect was analyzed and simulated. The results show that with the increase of dust particle size, the average dust reduction efficiency first increases and then decreases, and the water consumption increases gradually. The optimal dust reduction parameter set makes the average dust reduction efficiency reach 90.7%, an increase of 6.6%.