This work proposes a vibrating mesh screen as an alternative to the static mesh screen currently used in conventional flooded-bed dust scrubbers for removing airborne coal mine dust in the continuous mining environment. Fundamental assessments suggest that a vibrating screen may improve the dust collection efficiency of scrubber systems and mitigate the clogging issues associated with the conventional design. To evaluate this hypothesis, computational fluid dynamics (CFD) simulations were carried out to assess the effects of vibration conditions (i.e., frequency and amplitude) on the dust particle-mesh interaction and mesh wetting conditions, which are the two decisive factors in determining the dust collection efficiency. The results suggest that the vibrating mesh screen can enhance dust particle collision opportunities on the mesh and increase mesh wetted area as compared to the static mesh screen. The effects of mesh screen aperture, coal dust concentration, and spray nozzle flow rate on the performance of the vibrating mesh are also evaluated. Finally, a simplified three-phase flow simulation including airflow, dust particles, and water droplet spray is performed, and the results reflect a significant improvement of dust collection efficiency in the liquid-coated vibrating mesh screen.

这项工作提出了一种振动筛网作为静态筛网的替代品，用于在连续采矿环境中去除空气中的煤矿粉尘。基本评估表明，振动筛可以提高洗涤器系统的除尘效率并减轻与传统设计相关的堵塞问题。为了评估这一假设，进行了计算流体动力学 (CFD) 模拟，以评估振动条件（即频率和振幅）对尘埃粒子-网格相互作用和网格润湿条件的影响，这两个决定性因素是确定除尘效率。结果表明，与静态筛网相比，振动筛网可以增加灰尘颗粒在筛网上的碰撞机会并增加筛网润湿面积。还评估了筛网孔径、煤尘浓度和喷嘴流量对振动筛性能的影响。最后，进行了包括气流、尘粒和水滴喷雾的简化三相流模拟，结果反映了液体涂层振动筛网的除尘效率显着提高。