Knowledge of pleated filter elements for food and beverage filtration

Filter element production process: The filter material of the filter element is generally made into a corrugated shape, which is generally folded from 3 to 5 layers, and a strong filter material forming equipment must be used, so that the multi-layer composite fibers can be tightly attached to the support net. If the support mesh and the fiber filter material are not close together, it means that the manufacturing process is not good. It is worth noting that if the filter element flows from the outside to the inside, the corrugated folds should be close to the inner skeleton, and if the filter element flows from the inside to the outside, the corrugated folds should be close to the outer skeleton. The standards related to the testing standards are as follows: now filter elements are tested according to ISO standards, ISO 2942 structural integrity test; ISO 2943 material and medium compatibility test; ISO 2941 anti-rupture test; ISO 3723 rated axial load test; ISO 3768 pressure test Determination of drop flow characteristics; ISO 3724 Flow Fatigue Characteristics Test: Multiple Pass Test for ISO 4572 Filtration Performance. Appearance quality refers to the appearance impression of the filter element after it is made, mainly including: the processing finish of the upper and lower covers and whether the surface treatment is beautiful. Whether the corrugation of the filter material is uniform and whether it is perpendicular to the upper and lower covers. Whether the glue on the upper and lower covers, the filter material and the longitudinal seam of the filter material is appropriate, uniform, bubble-free and beautiful. Whether the vacuum plastic seal is in good condition, the product model is Wang or not, and the product model is clearly printed. Definition of filtration accuracy: the ability of filter material to filter pollutants with different particle sizes: filtration ratio β u003d number of particles larger than size x um upstream, number of particles larger than size x um downstream Index of dirt holding capacity: The dirt holding capacity refers to the weight of particle pollution that can be accommodated by the filter material per unit area when the pressure drop of the filter material reaches the specified value during the experiment.
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