1. What are the actual and nominal sizes of high-efficiency filters with and without partitions? ?
Why are high-efficiency filters with or without partitions divided into actual sizes and nominal sizes? The reason is that the nominal size includes the outer frame and filter The actual size of the filter is generally removed from the outer frame, and only the width, height, depth of the filter material and the area of the filter material are calculated.
2. There are partitions and What are the similarities and differences between high-efficiency filters without partitions?
High-efficiency filters can be divided into: high-efficiency with partitions and high-efficiency without partitions.
The high-efficiency filter with partitions is made of ultra-fine glass fiber as filter material, offset paper, and aluminum platinum as partitions, and is glued with a wooden frame or aluminum alloy frame. It has high filtration efficiency, low resistance, and large air volume. Advantages, widely used in various local purification equipment and clean workshops.
The high-efficiency filter without partitions uses ultra-fine glass fiber as the filter material and hot melt adhesive as the separator. It is assembled with various outer frames. The outer frame is beautiful. Compared with the high-efficiency filter with partitions, under the same air volume, It has the advantages of small size, light weight, compact structure and reliable performance.
3. There are partitions and What are the standard folding numbers, folding heights, and formula conversions for high-efficiency filter media without partitions?
The folding height of filter paper with partitions is generally shorter than the nominal sizeabout 30mm~34mm. The folding number is mainly determined by It is determined by the tightness of the assembly of separator paper, filter paper and separator paper. The curvature of the separator paper is calculated according to the standard, which is generally 4 mm. If it is less than 4 mm, the number of separators will be more. In addition, if the assembly is loose, the other The result is counterproductive. The number of partitions with partitions is less. The folding number of filter paper without partitions is mainly determined by the folding height of the filter paper and the tightness of the filter paper.
4, what is junior high school, middle school, high school, sub-high school, high efficiency filtering device?
Primary filter is suitable for pre-filtration of air-conditioning systems and is mainly used to filter dust particles above 5um. There are three styles of primary filters (folding, plate, and bag). The outer frame materials include paper frame, aluminum frame, and galvanized frame, and the filter materials include non-woven fabric, nylon mesh, activated carbon filter material, metal mesh, etc.
Medium-efficiency filters are widely used in the intermediate filtration of air-conditioning systems. They are mainly used to filter dust particles of 1um~5um. They have the advantages of small resistance and large air volume. Medium-efficiency filters include bag type, frame type, combined type, etc.
High-efficiency filters are mainly divided into two types: filters with partitions and filters without partitions.
5, primary, medium and high-efficiency filters?
For atmospheric dust particles with a particle size greater than 5.0um, a filter whose counting efficiency is greater than or equal to 20% but less than 80% is called a primary filter. efficient filter.
For atmospheric dust particles with a particle size greater than 1.0um, a filter whose counting efficiency is greater than or equal to 20% but less than 70% is called a medium-efficiency filter.
A filter whose particle size is greater than or equal to 0.3um particles in the atmosphere and has a counting efficiency of greater than or equal to 99.99% is called a high-efficiency filter.
6, Fan What are the functions and principles of filter groupFFU?
FFUSong Dynasty;font-size: 19px”>How to detect the air filter’s wind speed, rated air volume, initial resistance, efficiency and other related parameters during the test process?
of the air filter The wind speed, rated air volume, resistance, and efficiency must not leak in the surrounding frame of the testing platform, and its sealing must be tight, otherwise the accuracy and authenticity of the testing data will be affected. The air resistance of the tested filter at the rated air volume is The initial resistance, the surface wind speed is affected by the resistance. The greater the resistance, the surface wind speed gradually increases, and the air volume and resistance are directly proportional.
40What are the functions of separator paper with partitions, sealants, filter materials and other related components?
Corrugated aluminum paper partition The distance between folded layers can be accurately maintained to maximize the use of filter media with minimal resistance. In corrosive environments, vinyl-coated separators can be used. The edges of the separators are folded to prevent damage to the filter material. Thin separators There can be more folding layers to expand the filter area and increase the air volume.
Use sealant within the frame to seal the filter material to prevent side leakage around it. The sealing layer completely seals the edge of the filter material and the partition, that is, it is sealed All possible channels for leakage.
The filter material is high-density paper made of ultra-fine glass fiber. The filter material is folded to maximize the effective area of the filter material, thereby reducing the filtration rate of the filter material.
Frame: (wooden) adopts 18mm~19mm thick pressed board and plywood frame, and the joints are connected with glue and nails to ensure their firmness. (Metal frame) includes stainless steel, aluminum profiles and other metal materials.
41, no partition design reduces operating costs, light weight, small and compact structure, low chemical gas generation Composition materials.
The efficient design without partitions can achieve the highest efficiency with minimal resistance, thereby reducing operating costs. In particular, the designed hot melt adhesive can ensure the same fold spacing, ensuring the best Optimal airflow is achieved while achieving high dust holding capacity, making full use of the filter material throughout the depth of the filter.
42, The advantages of HV type combined high-efficiency filter sex?
Large dust capacity, no partition design; solid structure to ensure good performance under turbulent flow conditions; high air volume type and other features. HV type filter is a large-load, high-efficiency air filter, suitable for constant air flow and variable air flow systems.
43, Activated carbon filter
This filter is used to remove gases, volatiles, odors and smoke. The removal of odors increases the proportion of return air in the room, thereby reducing the energy loss of heating and cooling.
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