According to the high-efficiency filter national standard GB13554-92 and GB13554-2008 to formulate quality standards: [Packaging] The outer packaging is intact, no hit, cracking traces; internal packaging (plastic bag) should be intact, foam angle, foam board Complete, model, air volume, airflow flow direction should be complete, accurate, complete, and product certificate is available. [Framework] High-efficiency filter frame surface has no obvious pollution, no unevenness, scar, no scratch, coating, no flakes, no burr, rust, high-efficiency filter frame (on one side of the viscosity) should be flat, no significant deviation; The high-efficiency filter frame strength should meet the requirements, such as placing the surface, shake, the frame has no deformation, and the shake occurs. [Seam] The seal between the high-efficiency filter paper and the frame should be strict, no gaps and holes; the sealing strip between the high-efficiency filter and the frame, should be connected, unfained, visual flat, high efficiency filters and boxes
Some customers are more concerned about whether acid-alkaline gases volatilized during the laboratory operation, affecting the high-efficiency filter in the clean room. And for PTFE filter paper and glass fiber filter paper, I don't know how to choose. In response to the above problems, Shandong Xinli has compared the PTFE filter paper and glass fiber filter paper: Shandong Xinli PTFE high-efficiency / super efficient filter, high-quality PTFE filter material, has a reliable filter level of H13-U16 level, and low wind resistance, Small energy consumption, can be widely used in semiconductor, electronics, precision manufacturing, biopharmaceutical and other industries. The company has advanced production and monitoring equipment, with advanced HEPA & ULPA filter leak detection platform, perfect testing procedures, strict quality assurance system and management system, and the high-efficiency / super efficient filter of Shandong Xinli factory is strictly followed. EN1822: 2009 standard for changing point-by-point automatic scanning
The junior high-efficiency air filter refers to air filtration units, generally used in clean workshops, cleansing plants, laboratory and clean rooms, or for electronic mechanical communication equipment. There is an initial filter, a medium-role filter, an efficient filter and a sub-efficacy model. Various models have different standards and performance. ◆ Reasonably determine the efficiency of the filter at all levels, the last level filter determines the degree of air purification, and the upstream level filter mainly protects the lower wind filter to extend its service life, or protect the air conditioning system. To ensure its normal work. In the air conditioning design, you should first determine the efficiency of the last level filter according to the user's cleanup requirements, then select the protective filter, if this level filter needs to be protected, it is necessary to add a filter in its upper wind. Protect the filter collective \"pre-filter \". The efficiency of each of the filters should be properly matched. If adjacent two levels
Filtering efficiency is the most important indicator of the air filter, which refers to the percentage of the ratio of the difference in air dust concentration before and after the filters in the rated air volume. For clean air conditioning systems, different levels of filters are usually used in series, and if there is a filter in series, its total efficiency: The penetration rate and filter efficiency filtering efficiency are parameters that measures the air filter to capture dust capability. It is also possible to evaluate the good and bad of the filter using penetration, and penetration rate refers to the percentage of dust concentration of air after filtration and the dust concentration of the dust filter, which can be used to indicate that the penetration rate can be clearly represented. The air before and after the filter is dusty, and it is more intuitive to evaluate the performance of the high-efficiency filter.
The filter characteristics indicators have four, namely, speed, filter speed, efficiency, resistance, and dust. Of course, there are other indicators, such as weight, power and regeneration characteristics, etc. These indicators are mainly related to filter materials, so what filter material manufacturing filter is the most important part of the development of filters. In addition to the determinants of filter materials, the structure of the filter is also an important factor. For example, a filter material makes a flat filter or a multi-bag shape or wedge filter, which is very different in resistance and dust removal, so it is a reasonable and optimal structure, and it is another important part of the development of the filter. . Resistance: The fibers turn the airflow to the airflow to produce minute resistance. The sum of the resistance of countless fibers is the resistance of the air filter. The air filter resistance increases with gas flow, by increasing the air filter material area, the relative wind speed of the filter material can be reduced to reduce the air filter resistance. Space and filter speed measuring filter