Flooded-bed dust scrubbers installed on continuous miners use fibrous type multi-layered filters to capture dust from the airstream. Prolonged operations of the scrubber could lead to filter clogging due to dust accumulation. This results in reduced flow through the scrubber and elevated dust levels in the mine environment. This paper compares the performance of a conventional fibrous screen filter and a novel impingement type dust filter. The impingement filter is a self-cleaning system and was designed to have a resistance similar to the fibrous filter. The cleaning efficiencies for these filters were computed using iso-kinetic sampling and optical counting of coal dust particles in a clean unclogged state. The cleaning efficiency of the impingement filter also increased with an increase in particle size and was comparable with the conventional fibrous filter. The cleaning efficiency of the fibrous filter improved significantly with an increase in water flow. The non-clogging nature of the impingement filter and minimal maintenance requirement makes it an attractive alternative to the conventional fibrous type filter in mining applications. The research also proposes a term called ‘filter performance factor’ to compare the performance of different filters under similar operating conditions.

中文翻译：

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用于矿用除尘器的无堵塞冲击式过滤器的设计、建模和实验室测试

安装在连续采矿机上的溢流床除尘器使用纤维型多层过滤器从气流中捕获灰尘。洗涤器的长时间运行可能会因灰尘积聚而导致过滤器堵塞。这会导致通过洗涤器的流量减少并提高矿井环境中的灰尘水平。本文比较了传统纤维筛网过滤器和新型撞击式灰尘过滤器的性能。冲击过滤器是一种自清洁系统，其设计具有与纤维过滤器相似的阻力。这些过滤器的清洁效率是使用等动力采样和清洁未堵塞状态的煤尘颗粒的光学计数来计算的。冲击过滤器的清洁效率也随着颗粒尺寸的增加而增加，并且与传统的纤维过滤器相当。纤维过滤器的清洁效率随着水流量的增加而显着提高。冲击过滤器的无堵塞特性和最少的维护要求使其成为采矿应用中传统纤维型过滤器的有吸引力的替代品。该研究还提出了一个称为“过滤器性能系数”的术语，用于比较不同过滤器在类似操作条件下的性能。冲击过滤器的无堵塞特性和最少的维护要求使其成为采矿应用中传统纤维型过滤器的有吸引力的替代品。该研究还提出了一个称为“过滤器性能系数”的术语，用于比较不同过滤器在类似操作条件下的性能。冲击过滤器的无堵塞特性和最少的维护要求使其成为采矿应用中传统纤维型过滤器的有吸引力的替代品。该研究还提出了一个称为“过滤器性能系数”的术语，用于比较不同过滤器在类似操作条件下的性能。