Fibrous-type filters are used to capture dust particles in mining and other occupations where personnel are exposed for prolonged periods. Dust cleansing devices including flooded-bed dust scrubbers use these mesh-type multi-layered filters. These filters trap dust particles efficiently on their surface and inside their mesh. However, their continued operation leads to dust build-up and clogging. This results in increased resistance of the filter and lowered airflow rate through the scrubber. This could potentially enhance the exposure of the miners. A non-clogging self-cleaning impingement screen type dust filter was designed by the authors for use in mining and industrial dust cleansing applications. The filter guides dirt-laden air through rapidly turning paths which forces it to shed heavier particles. The particles impact one of the impermeable solid metallic filter surfaces and are removed from the airstream. A full cone water spray installed upstream prevents any surface build-up of dust. This paper summaried the computer models generated to show the filter operations and laboratory experiments including optical particle counting to establish the cleaning efficiency.

纤维型过滤器用于在采矿和其他人员长时间暴露的职业中捕获灰尘颗粒。包括溢流床除尘器在内的除尘设备使用这些网状多层过滤器。这些过滤器有效地将灰尘颗粒捕获在其表面和网状物内部。然而，它们的持续运行会导致灰尘积聚和堵塞。这会导致过滤器的阻力增加并降低通过洗涤器的气流速率。这可能会增加矿工的曝光率。作者设计了一种无堵塞自清洁冲击筛式除尘过滤器，用于采矿和工业除尘应用。过滤器引导充满灰尘的空气通过快速转动的路径，迫使其脱落较重的颗粒。颗粒撞击其中一个不可渗透的固体金属过滤器表面并从气流中去除。安装在上游的全锥形喷水器可防止任何表面积聚灰尘。本文总结了为显示过滤器操作和实验室实验而生成的计算机模型，包括光学粒子计数以确定清洁效率。