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Answers to common problems with and without separators

clean-link.com.cn
2018-09-10

1. Q: What is the actual size and nominal size of the high-efficiency filter with and without baffles?

A: Whether there is a separator high-efficiency filter, why the actual size and the nominal size are divided, because the nominal size is the filter including the outer frame and the filter material, and the actual size generally removes the outer frame, only the width of the filter material is calculated. High, deep and the area of ​​the filter material.

2. Q: Is there a similarity and difference between the separator and the non-separator high efficiency filter?

A: High-efficiency filters can be divided into: high efficiency with partitions and high efficiency without separators. The high-efficiency filter with separator is made of ultra-fine glass fiber as filter material, rubber sheet paper and aluminum-platinum as a partition plate, and is made of wood frame or aluminum alloy frame. It has high filtration efficiency, low resistance and large air volume. Advantages, wide application and various local purification equipment and clean workshops. The high-efficiency filter without separator is made of ultra-fine glass fiber as the filter material, the hot-melt adhesive is used as the separator, and it is assembled with various outer frames, and the outer frame is beautiful. Compared with the high-efficiency filter with the partition, it has the same air volume. Small size, light weight, compact structure and reliable performance.

3. Q: What are the standard folds, fold heights, and formula conversions for separators and separator-free high-efficiency filter media?

Answer: The folding height of the filter paper with partition is generally 30mm~34mm shorter than the height of the nominal size. The folding number is mainly determined by the tightness of the separator paper and the filter paper and the separator paper. The curvature of the separator paper is as standard. The calculation is generally 4mm; if it is less than 4mm, there are many partitions, and if the assembly is loose, the result is counterproductive. The number of filter papers relative to the non-separator is mainly determined by the height of the filter paper and the tightness of the filter paper.

4. Q: What are the primary, middle, high school, sub-high, and high efficiency filters?

A: The primary filter is suitable for pre-filtration of air conditioning systems and is mainly used to filter dust particles above 5um. The primary filter has three styles (folding, plate, bag). The outer frame material has a paper frame, an aluminum frame, a galvanized frame, and the filter material includes a non-woven fabric, a nylon mesh, an activated carbon filter material, a metal mesh, and the like. The medium efficiency filter is widely used in the intermediate filtration of air conditioning systems, and is mainly used for filtering dust particles of 1 um to 5 um, and has the advantages of small resistance and large air volume. The medium efficiency filter has a bag type, a frame type, a combination type, and the like. High-efficiency filters are mainly divided into two types: separators and separatorless filters.

5. Q: What is the classification and performance comparison of the primary, middle and high efficiency filters?

A: For filters with a particle size equal to more than 5.0um, the atmospheric dust count efficiency is greater than or equal to 20% and less than 80%. The filter is called the primary filter. A filter having an atmospheric dust count efficiency of 20% or more and less than 70% of a particle diameter equal to or larger than 1.0 um is called a medium efficiency filter. A filter having an atmospheric dust count efficiency of 99.99% or more with a particle diameter equal to or larger than 0.3 um is called a high efficiency filter.

6. Q: What is the test filter and the end filter?

A: The filter that performs performance testing according to the standard is called the test filter. The end filter refers to a filter used to trap artificial dust of the filter under test.

7. Q: What is the rated air volume? What is the capacity of the dust?

Answer: The air volume designed by the manufacturer for the unit time is expressed in m3/h, and the dust holding capacity refers to the total mass of artificial dust applied and the filtered filter when the tested filter reaches the final resistance. The product of the average weighting efficiency, expressed in units of "g".

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