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Partitioned HEPA filter airflow and leak detection method
Partitioned HEPA filter airflow and leak detection methodHigh-efficiency filter with a spacer has a good role in the purification system with large air volume and can filter dust and impurities efficiently up to 99.999%.1. High-efficiency filters influence factors: Dust particle size: the larger the inertia, the greater the interception effect, the smaller the particle size, the more obvious the role of diffusion. And the middle particle size is filtering efficiency is lower, so often the middle particle size to check the efficiency of the high-efficiency filter; Filtration air speed: the larger the air speed of the high-efficiency filter with partition, the stronger the inertia effect, but the wind speed that is too strong will be attached to the dust particles blown out, and the wind speed that is too large also makes the filtering resistance increased. The smaller the wind speed, the stronger the diffusion effect, and the smaller the filtering resistance; fiber diameter and denseness: the finer and denser the fiber, the larger the contact area with the air, the stronger the inertia and interception effect, but the resistance increases; The role of dust attachment: with the filtration and filtration, the particles deposited on the surface of the fiber gradually increase, so the need for regular cleaning of the filter media. 2. High-efficiency air filter specifications can be customized, what are the installation leak detection methods? High-efficiency filter leak detection purpose: The filtering efficiency of the high-efficiency filter itself is generally tested by the manufacturer, and the filter filtration efficiency report sheet and certificate of conformity are attached to the factory. For pharmaceutical enterprises, high-efficiency filter leak detection refers to the on-site leak detection after the installation of a high-efficiency filter and its system, mainly to check the pores and other damages in the filter material, such as frame seal, gasket seal, and leakage seams on the filter frame. The purpose of leak detection is to detect the defects in the high-efficiency filter itself and in the installation in time by checking the sealing of the high-efficiency filter and its connection parts with the installation frame and to take corresponding remedial measures to ensure the cleanliness of the area, and the focus of the installation leak detection is the sealing quality of the high-efficiency filter frame. |
