RTfilter Co., Ltd

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Calculation method of air volume of HEPA filter

Guangzhou Rongteng Environmental Technology Co., Ltd. is a manufacturer specializing in the production of primary, medium and high-efficiency filters. It provides facilities for electronics factories, semiconductor companies, biopharmaceuticals, food processing, petrochemical industries, clean rooms, hospitals, automotive coatings and other industries. The required air purification solutions and filter products. The following is the filter manufacturer to introduce the calculation method of the air volume of the high efficiency filter.    In fact, there are two different classifications of air volume calculation methods for high-efficiency filters:    1. Calculation method of standard separator filter    1. The section wind speed of the filter paper=1000/3600/25.27=0.011 m/s, that is, when the section wind speed of the filter paper is 0.011 m/s, the initial resistance of the filter paper is 200PA;    2. Next is the calculation of the air volume of the filter, a 900*600*370 filter 0.88*0.58*280*0.35*2*0.011*3600=3961m3/h, in which:    0.88 is the effective length of the filter paper;    0.58 is the effective width of the filter paper;    280 is the number of filter paper folds for a 1 meter standard filter;    0.35 is the actual height of the filter paper;    2 means double layer;    0.011 is the section wind speed of the filter paper;    3600 is one hour equal to 3600 seconds.    3. Next, we use a national standard 484*484*220 high efficiency filter to calculate: the rated air volume is 1000M3/H, the initial resistance is 200PA, the number of filter paper splits is 28 fold/10CM, and the effective area of ​​the filter paper is calculated as 0.475*0.475*280 *0.2*2=25.27 square meters, in which:    0.47 is the effective length of the filter paper;    0.475 is the effective width of the filter paper;    280 is a 1 meter filter paper folded in double layers;    0.2 is the actual height of the filter paper.    2. Determine the air volume according to the wind speed and size of the high efficiency filter    1. Under normal circumstances, the high efficiency filter we use has a rated wind speed between 0.3-0.6M/S, and we can take the intermediate value 0.45;    2. To give a simple example, the size of the 1000 air volume high efficiency filter is: 484*484*220, and the air volume can be obtained by simply converting.    These two are our common air volume calculation methods for high efficiency filters, because air volume is a very important knowledge when we use high efficiency air filters, so they must be mastered! The above is about the air volume counting of high efficiency filters Ways, if you want to know more about air filters, welcome to consult!

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The relationship between the parameters of the activated carbon bag filter and the spray booth

   With the country's environmental protection requirements for all walks of life, many industries must meet certain requirements set by the Environmental Protection Agency before they can be put into production. For example, in environmental protection, the sheet metal and spray paint industries in various regions are required to transform and manage the spray booths. So how to meet such requirements? Activated carbon bag filters with qualified initial filter parameters can help these industries meet such requirements. What is the relationship between the activated carbon bag filter parameters and the spray booth?

   The Environmental Protection Agency requires that each paint spray booth must be equipped with a purification treatment system. The purification treatment of paint spray booth waste gas mainly includes paint mist particulate matter and VOC organic waste gas (benzene, toluene, xylene, non-methane total hydrocarbons). Activated carbon bag filters with qualified primary filter parameters for these particulate matter and exhaust gas can filter them. Let's talk about their relationship below.

   One of the parameters of the activated carbon bag-type primary filter is its filter material. Its filter material uses a composite of high-efficiency and adsorbent activated carbon fiber and filter cotton, with strong surface adsorption capacity and effective Control the odor, peculiar smell and organic pollution in the air. Because of this feature, the activated carbon bag filter with qualified primary filter parameters can absorb paint mist particles and VOC organic waste gas from the paint spray booth. If we choose other filter materials, it will directly affect the air cleaning effect of the spray booth.

   The second parameter of the activated carbon bag filter is its outer frame. The activated carbon bag filter uses an aluminum alloy frame, galvanized steel plate, and waterproof cardboard frame as its outer frame material. These three kinds of frames are more suitable for spray booths, because the air in the spray booths is usually humid, and these three kinds of frames can be used in humid environments. If we choose a material that is not waterproof or easy to rust as the filter frame, it will not be suitable for spray booths.

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Installation and use skills of air filters in the pharmaceutical and food industries

   At present, the air filters of pharmaceutical factories have been widely used in the pharmaceutical industry. Everyone has a relatively familiar understanding of the production process, efficiency, and frame materials of the air filters, but there are also certain installation items. doubt. The following Tianjin Klein air filter experts will give us a detailed introduction to the air filter installation steps for the pharmaceutical industry, and I hope it will be helpful to everyone. Why make a special explanation to the pharmaceutical industry? The air filters used in the pharmaceutical industry are more comprehensive and systematic. One pass can give everyone a comprehensive understanding.    first step    When installing air filters in the pharmaceutical industry, pay attention to the return air section. The return air section means that the air volume sent by the exhaust fan reaches the specified air volume, and the recovery system of the medical air filter can send out air.    Second step    If it is a humidifying air filter in the pharmaceutical industry, we must pay attention to the final air quality. In the testing stage, we must strictly check the substances that cannot be filtered. We must solve them in advance to avoid unnecessary effects in the later stage. .    third step    In order to ensure the normal operation of air filters in the pharmaceutical industry, the air output also has strict requirements. Generally speaking, the air quality of medicines is relatively strict, so when the air is exported, it must also meet the requirements.    The above three steps are what we must pay attention to when installing air filters in the pharmaceutical industry. Finally, we remind everyone that the use of air filters in the pharmaceutical industry must be regularly maintained. Generally, air filters in the pharmaceutical industry are cleaned in a month or a half, so as to avoid excessive filtering materials in the equipment.    Through the introduction, we have the latest knowledge about air filters in the pharmaceutical industry. I hope everyone can better understand the filtration equipment, which is also very helpful for purifying the environment. If you want to know more about medical air filters, you can browse other articles on this website.

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G2-F5washable synthetic fiber plank pre filter

G2-F5 washable synthetic fiber plank pre-filter is a kind of filter material that can be replaced by itself to save the purchase cost of the user. It has the advantages of detachable, washable, and reusable. Compared with the general filter with a protective net, the air volume is larger and the dust holding capacity is larger. Of course, the cost will naturally be higher.

The outer frame of the washable plate filter is sturdy and detachable. It adopts a sturdy plate-type aluminum alloy frame with aluminum alloy corners. The structure is firm and stable to ensure that the filter will not be deformed or damaged in a poor working environment. The disassembly design makes it easy to replace the filter material to achieve the purpose of frame reuse. Lightweight panel structure, high-quality polyester synthetic fiber filter material, low initial resistance, and good fire resistance.

The filter net reinforcement further enhances the firmness of the filter. At the same time, the balanced spacing and double stiffener design ensure the equal-height pleated shape of the filter, so that the plate filter can reach the maximum dust holding capacity when the resistance is minimum. The filter material is made of high-quality polyester synthetic fiber, which can be cleaned and reused many times, has a long service life, and saves production and use costs; the fluffy and dense fiber structure ensures a higher dust collection rate and a larger dust holding capacity, which is effective Extend the service life of its back-end medium efficiency filter. Size: 2 inches (46mm) and 4 inches (96mm) are available in different thicknesses. Both 2 inches and 4 inches adopt a pleated structure. Optional filtering level: G2, G3, G4 (EN779)

Purpose of washable plate filter:

It can clean the pre-filter of the centralized ventilation and air-conditioning system of office buildings, conference rooms, hospitals, shopping malls, airports and other large civil buildings, general industrial plants, or clean rooms. Coarse dust filtration, air filtration system pre-filtration, clean room inlet and return air filtration.

Applications:

1. Pre-filtration of general air conditioning and ventilation systems to avoid dust pollution inside the system;

2. Pre-filtration of large air compressors;

3. Centralized ventilation and air-conditioning system and return air filtration in cleanroom can prolong the service life of the subsequent high-efficiency filter;

4. The pre-filtering of the ventilation system of general industrial plants meets the general clean air requirements;

5. Pre-filtering of air conditioning systems in general buildings;

6. Pre-filtering of rail transit public basic air-conditioning system.

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Detailed cleaning method of the air filter

    Air filters are divided into four types: coarse efficiency, medium efficiency, sub-efficient, and high efficiency. Different numbers of air filters are installed in a pipe according to the air volume. The filter section is installed in the central air conditioning system to send indoor air. Dust particles are filtered out. In order to achieve high-quality indoor air. How to clean the air filter in detail in daily life?

    For the air filter, the operator must understand the specific cleaning part when cleaning. Under normal circumstances, the cleaning of the air filter mainly includes the surface cleaning of the unit and the cleaning of the internal and initial effects and other different types of filters. The main tools for cleaning the air filter include rags, troughs, detergent, and corresponding stainless steel. When using detergent, you should choose some neutral products, because such products will not have a certain impact on the equipment during daily use. If a stainless steel frame is prepared at the same time, it is relatively simple when placing the air filter.

    Of course, at this time, you should also have an understanding of the specific situation. If the surface of the filter is not very dirty, then a simple method should be used at this time. You can take the air filter directly outdoors, use a clean compressed air device, and perform double-sided blowing. After the blowing is completed, it should be spread on the shelf and the corresponding equipment should be dried. However, in the process of drying, it should be turned over in time. The main purpose is to ensure that each side can be dried without dampness.

    If the surface of the air filter is dirty, then, in this case, you need to use water for cleaning. When using clean water to rinse, it should be done until it is clean. If the surface of the unit is dirty, how to clean the air filter is a problem that many people are very concerned about. It is mainly this way, and the corresponding difficulty is higher when cleaning.

    In view of this situation, wipes should be used when cleaning, and the air-conditioning box, as well as the corresponding surfaces and auxiliary pipelines, and meters should be cleaned in many aspects every day. In this way, the equipment can be clean and bright. You can wipe the oil and glue on the equipment with a rag.

    The above is about the detailed cleaning of the air filter. If you want to know more about the air filter, you can pay attention to Guangzhou RT air filter Co., Ltd.

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Glass fiber media is an inorganic non-metallic material with excellent performance. It has a wide variety of advantages, such as good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. It also has disadvantages such as brittleness and poor wear resistance. It has a high absorption effect on paint and is suitable for spray booths and painting workshops.

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How many kinds of filter materials are available for HEPA filters?

Those who are familiar with filters know that air filters are divided into primary, medium, and high-efficiency levels according to their filtration efficiency, and the filter materials corresponding to different levels of filters are also the same. Today, I would like to introduce to you what kinds of filter materials are available for high-efficiency filters?

At present, there are mainly three kinds of filter materials found in the market that can achieve high-efficiency filtration, namely PP filter media, glass fiber filter paper, and PTFE. The following is the same for everyone.

PP filter material

PP filter material, also known as ultra-fine polypropylene fiber, is a new type of filter material made of polypropylene special resin through melt-blown non-woven. The filtration efficiency is 99.9% to 99.999%, and the filter particle size is 0.5. Above micron, it is characterized by the low cathode and high efficiency (also known as chemical fiber material). Its characteristic is that the filtration efficiency can reach F8-F9, and its discount number can only be discounted up to 90%.

Glass fiber filter paper

Glass fiber filter paper is also called glass fiber filter paper. Glass fiber material is the most commonly used material for HEPA filters with and without partitions. The filtration efficiency is 99.9% to 99.999%, and the filter particle size is 0.3 microns or more. Its biggest weakness is that it contains up to 10.7% boron (B2O3), and it is easy to generate silicon tetrafluoride when reacting with hydrofluoric acid, which will break the filter material and form secondary pollution.

Glass fiber: The main component is SiO2,

Characteristics: Glass fiber is an inorganic fiber. It is made by melting glass frit at a temperature of 1300-1600°C, drawing it from the molten state, and quickly quenching it. The density is 2.64g/㎡. The glass fiber is chemically resistant In terms of corrosion, in addition to hydrofluoric acid, high temperature, and strong alkali, it is relatively stable to other media. The disadvantage of glass fiber is poor folding resistance.

In the purchase, it is generally calculated by kg. If the measurement is square meter, it can be calculated as 75 grams per square meter. In the price, no partition is slightly more expensive than the glass fiber filter paper with partition.

PTFE

Using PTFE as raw material, through a special process, two-way stretching, using the unique node fibril property of PTFE film, smooth surface, chemical resistance, breathable and impermeable, large air permeability, flame retardant, high-temperature resistance, strong acid-resistance Alkali, non-toxic and other characteristics, the product made has high filtration efficiency, up to 99.99%, close to zero-emission; low running resistance, fast filtration speed; long service life, reusable, thereby reducing operating costs. Mainly used for flue gas filtration of various industrial furnaces such as chemical industry, steel, metallurgy, carbon black, power generation, cement, garbage incineration, etc.

Features

1. Surface filtration, low filtration resistance, easy to peel off the dust layer, solving the problems that cannot be solved by conventional filtration.

2. The aperture is controlled between 0.2~3μm, which can effectively trap dust. PTFE filter membrane

3. The PTFE filter membrane has a smooth surface, no condensation, easy to clean dust, maintain the dust removal efficiency, and greatly enhances the service life.

4. The filter material has a long service life, high and low-temperature resistance, chemical stability, and non-aging properties, which make it extremely adaptable to temperature, humidity, and corrosive gases, which is unmatched by conventional filter materials.

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Activated carbon pleated filter

    An activated carbon folding filter is also called activated carbon fiber filter. It is widely used in chemical, pharmaceutical, food, entertainment venues, places that need to purify the air, and the recovery of harmful gases such as benzene, formaldehyde, ammonia, etc. by adsorption and removal of solvents, using activated carbon The felt has a large specific surface area and strong adsorption capacity. It can quickly deal with various harmful gases and effectively clean the air to control the odor.

    Activated carbon foldable filter is mainly used to remove gas, odor, and smoke. The removal of odors increases the proportion of room return air, thereby reducing the energy loss of heating and cooling. The specific gravity of the activated carbon filter is up to More than 63% carbon.

    Features of activated carbon folding filter:

    01 Aluminum profile frame, galvanized frame, and stainless steel can also be used, thickness: 21mm, 25mm, 46mm, 50mm, and other thicknesses.

    02Chemical fiber filter material, large dust holding capacity.

    03 Filter material: activated carbon felt.

    04The iron wire protection net is treated with multiple layers of pickling and baking paint on the surface to prevent rust, and can well fix the filter structure to ensure that the filter is not deformed during use and has a large dust holding capacity.

    The use of activated carbon folding filter

    Remove dust, smoke, odor, and volatile organic pollutants benzene, formaldehyde, ammonia, etc.

    Applicable occasions of activated carbon folding filter

    Airport terminal, chip factory, museum, library, film factory, sewage treatment plant, etc.

    Structure performance of activated carbon pleated filter

    The larger external surface area speeds up the narrow pore size distribution during the adsorption and desorption process, and the pore size is relatively uniform.

    Description of adsorption characteristics of activated carbon pleated filter

    1. Large adsorption capacity

    Activated carbon fiber has a developed microporous structure. Activated carbon fiber has a large adsorption capacity for organic compound vapor, and also has better performance for some malodorous substances, such as n-butyl mercaptan. It also has good adsorption capacity for inorganic gases such as NO, NO2, SO2, H2S, NH3, CO, CO2, HF, SiF4, etc. The adsorption capacity of inorganic compounds, dyes, benzoic acid, and other organic compounds and precious metal ions in aqueous solution is also higher than that of granular activated carbon. It also has good adsorption capacity for microorganisms and bacteria, such as the isossorption rate for E. coli.

    2. Fast adsorption speed

    Because the outer surface area of ​​activated carbon fiber is 1-2 orders of magnitude larger than that of granular activated carbon, and many micropores are directly opened on the surface of the fiber, which can directly contact adsorbate molecules, it is 2 to 3 orders of magnitude higher than that of granular activated carbon, and the gas adsorption is general The adsorption equilibrium is reached within tens of seconds or a few minutes, and the adsorption of liquids only needs tens of minutes to reach equilibrium.

    3. Fast desorption

    Because the fiber is thin, the outer surface is easily heated, so the desorption rate is also very fast.

    4. The adsorption capacity for low-concentration adsorbates is particularly excellent

    In surface adsorption, the smaller the pore size, the larger the adsorption force field. Since 90% of the activated carbon fiber is microporous, the activated carbon fiber maintains a high adsorption capacity for low-concentration adsorbates, even for ppm-order adsorbates.

    5. Thin adsorption layer

    Because the activated carbon fiber has a large adsorption capacity, a fast adsorption speed, and can adsorb low-concentration molecules, there will be no "leakage" phenomenon when the activated carbon fiber is used to adsorb and treat exhaust gas or waste liquid, that is, before the adsorption reaches saturation, The effluent concentration is also very low. When adsorbed by granular activated carbon, the effluent concentration is very high. Therefore, when activated carbon fiber is used, the thickness of the adsorption layer can be thinner than that of granular activated carbon.

    Other characteristics of activated carbon fiber

    The volume density is small, the filtration resistance is small, about one-third of the granular activated carbon, which can be used to adsorb liquid substances with high viscosity and low power consumption. Good air permeability and low-pressure loss

    High strength, not easy to pulverize, the adsorption layer will not increase resistance or uneven fluid distribution due to debris deposition and uneven deposition, and will not cause secondary pollution.

    With high purity and low impurities, it can be used in food processing and medical and health industries.

    Foldable activated carbon filter remarks:

    1. Foldable activated carbon filter (30 minutes test): benzene adsorption 80%; deodorization performance and dust removal rate> 85%;

    2. Foldable activated carbon filter (30 minutes test): benzene adsorption 95%; 30 minutes deodorization performance> 95%;

    3. Accept non-standard size orders;

    4. With the continuous update of the company's technology, if there are changes in technical parameters and specifications, we will not notify you separately;

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What is the difference between air filter prices?

   Why does the same air filter, the same model, and the same production material make the air filter, each manufacturer's quotation is different, often users consult the price of the air filter, some think the price is relatively high, some The price is acceptable, some feel cheaper, and the quality is not guaranteed.

   Air filters are mainly divided into panel Pre-filters, Mid-efficiency filters, sub-high efficiency filters, HEPA filters, and ultra HEPA filters.

   Here are three simple factors that affect the price of air filters by RT filter manufacturers:

   1. Look at the brand

   Different brands have different prices for air filters. There are many brands that produce air filters on the market. Due to the differences in production technology and materials, each brand will affect the sales price of the air filter, and there will be price differences.

   2. Look at the model

   Even the air filters of the same brand have different models and different prices. Different specifications, models, application fields and industries may be different, the design is different, and the price may be very different.

   3. Look at the selection

   Different air filters may use different materials. The materials currently used are stainless steel, aluminum alloy, plastic, etc. Due to the different materials, the price of the air filter will also be different.

   4. Look at the filter material

   Weight: The weight determines the density. The heavier the weight, the higher the density and the higher the cost. This factor is the most critical. Filter cotton with low quotations on the market is often very light.

   Fiber thickness: the finer the fiber, the higher the price.

   With or without processing: processed products tend to be more expensive than the original product.

   Color: White has the lowest cost, and products with color have higher prices.

   Filtering level: The higher the filtering efficiency, the higher the price.

   Size: The conventional size is cheaper than the non-standard size, and the loss is small.

   The above is the reason why the price of the air filter is different. If you want to consult more about the air filter, you can contact us Guangzhou RT filter manufacturer.

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Application of Mid-efficiency bag filter in the HVAC system

HVAC systems, known as air conditioning systems (HVAC), contain control systems for temperature, humidity, air cleanliness, and air circulation, and have a wide range of influence in architectural design and engineering and manufacturing worldwide. Next, we will introduce the application of medium - effect bag filter in the HVAC system. The medium effect bag filter mainly filters dust particles above 1-5 m. The filter material is mainly made of polyester non-woven cloth, polypropylene non-woven cloth, medium hole foam plastics, fine hole foam plastics, electrostatic fiber, and medium effect glass fiber filter paper. Medium - effect bag filter is the best structure of medium - effect filter. It is usually used in HVAC systems in public buildings, hospitals, electronic computers, network communications, precision machinery, pharmaceutical industry, and other industries. The filter of medium effect bag type needs to be replaced from March to April under the rated air capacity, or the filter must be replaced when the resistance of the filter reaches more than 400Pa; If the dust concentration value in the use environment is very large, then the use cycle will be shortened. The medium and effect filter is not well understood because it is commonly used in HVAC systems, such as public buildings, hospitals, electronic computers, network communications, precision machinery, pharmaceutical industry, and other industries have special requirements for the workplace can be seen. What are the roles of medium effect filters in HVAC systems? Jpeg In HVAC systems, medium efficiency filters are commonly used after primary efficiency filters to improve purification efficiency. Used on the edge of the HEPA filter to extend the life of the HEPA filter. The medium effect filter mainly filters dust from 1 to 10um. The filter materials of medium effect filter mainly include polyester non-woven cloth, polypropylene non-woven cloth, medium hole foam plastics, fine hole foam plastics, electrostatic fiber, and medium effect glass fiber filter paper. The most efficient filter is the bag structure, which takes a long time to clean and replace. The production and processing method of the glass fiber medium efficiency filter is the same as that of the filter. Medium efficiency filters are F filters in the air filter efficiency level. There are two types of F-grade medium efficiency filter: bag type includes F5~F9, non-bag type includes box type medium efficiency filter, clapboard type medium efficiency filter, clapboard type medium efficiency filter, combined mid-efficiency bag filter, mini folding V-type medium efficiency filter, etc. What are the roles of median-effect filters in HVAC systems What is an HVAC system? An HVAC system, also known as an Air conditioning system, is a control system containing temperature, humidity, cleanliness of the Air, and Ventilation, known as HVAC. Also heating ventilation and air conditioning. It has a wide influence in the world of architectural design and engineering as well as manufacturing. There are HVAC associations in various countries. Medium efficiency filter replacement cycle The medium-effect filter needs to be replaced within 3~4 months under the condition of rated airflow. Or the filter must be replaced when the resistance of the filter exceeds 400Pa; If the dust concentration value in the use environment is very large, then the use period will be reduced.

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What is the difference between pre-filter ?

   Why does the same air filter, the same model, and the same production material make the air filter, each manufacturer's quotation is different, often users consult the price of the air filter, some think the price is relatively high, some The price is acceptable, some feel cheaper, and the quality is not guaranteed.

   Air filters are mainly divided into panel Pre-filters, Mid-efficiency filters, sub-high efficiency filters, HEPA filters, and ultra HEPA filters.

   Here are three simple factors that affect the price of air filters by RT filter manufacturers:

   1. Look at the brand

   Different brands have different prices for air filters. There are many brands that produce air filters on the market. Due to the differences in production technology and materials, each brand will affect the sales price of the air filter, and there will be price differences.

   2. Look at the model

   Even the air filters of the same brand have different models and different prices. Different specifications, models, application fields and industries may be different, the design is different, and the price may be very different.

   3. Look at the selection

   Different air filters may use different materials. The materials currently used are stainless steel, aluminum alloy, plastic, etc. Due to the different materials, the price of the air filter will also be different.

   4. Look at the filter material

   Weight: The weight determines the density. The heavier the weight, the higher the density and the higher the cost. This factor is the most critical. Filter cotton with low quotations on the market is often very light.

   Fiber thickness: the finer the fiber, the higher the price.

   With or without processing: processed products tend to be more expensive than the original product.

   Color: White has the lowest cost, and products with color have higher prices.

   Filtering level: The higher the filtering efficiency, the higher the price.

   Size: The conventional size is cheaper than the non-standard size, and the loss is small.

The above is the reason why the price of the air filter is different. If you want to consult more about the air filter, you can contact us Guangzhou RT filter manufacturer

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Types of air filter materials

The air filter we mentioned in life is actually composed of air filter material and outer frame. So what kind of filter materials do filter manufacturers generally use for filters? Let's take everyone to announce one by one! 1. Synthetic fiber Synthetic fiber filter cotton can completely replace the non-woven fabric and glass fiber covering the full range of primary, medium and high-efficiency filter products in the general filtration environment. It is an emerging filter material and the main development direction of filter materials in the future. Using (polyester fiber) as the main raw material, abbreviation: PET, polyester fiber is made of polyethylene terephthalate, also known as synthetic fiber or polyester. The name of the industry is: chemical fiber, chemical fiber is divided into large chemical fiber and small chemical fiber, large chemical fiber refers to polyester fiber produced with high-quality PET chips; small chemical fiber refers to some small and medium-sized manufacturers use low quality recycled materials to regenerate PET chips Production of fiber. Compared with the filter material of the same level, it has the advantages of low resistance, light weight, large capacity, environmental protection and moderate price. 2. Non-woven fabric The scientific name polyester fiber, commonly known as non-woven fabric, has the technical characteristics of widespread use, technical maturity, and good stability. It is a typical filter material for primary and medium-efficiency plate and bag filters in my country. The manufacturing process is made by melt blowing, needle punching, spunlacing, spunbonding and other processes through multiple processes. Compared with other filter materials of the same level, it has stable quality, large dust holding capacity, strong humidity resistance, long service life, and economical. Durability and other advantages. Non-woven fabric is also the earliest applied filter material. The technology is mature and the production cost is low. Due to the continuous progress of technology in recent years, the emergence of composite non-woven fabrics has greatly improved the low-cost image of non-woven fabrics. Efficient. At the same time, the composite non-woven filter material can also be used for filtering in places with relatively high air cleanliness. 3. Glass fiber The glass fiber filter media is mainly made of various glass fibers with different thickness and length by special processing technology. Glass fiber is characterized by its stable performance, high temperature resistance, high efficiency, large capacity and long service life. And in some special environments, only glass fiber can do the job. It is widely used in primary effect filters, high temperature resistant filters and high efficiency filters of general ventilation systems, in places and environments with high requirements for air filtration. 4. Activated carbon Activated carbon can also be used as a filter material. The characteristic of activated carbon is to remove odor in the air. Activated carbon filter cotton refers to the synthetic fiber undergoing carbon immersion and gum treatment. The function of activated carbon is to remove odor, so the filtration efficiency is not emphasized. In use, it is generally used with independent primary and intermediate efficiency filters. The above four are filter cotton commonly used by filter manufacturers. Generally, the filter material used in the primary effect filter is the primary effect cotton, that is, synthetic fiber filter cotton; the medium efficiency filter generally uses non-woven fabric or glass fiber filter cotton; The filter materials used in high-efficiency filters are PP, glass fiber, PTFE, etc.

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F6 bag filter can be used for mid-level filtration of air-conditioning system to protect the next-level filter and the system itself in the system. In places where the cleanliness of air purification is not strict, the air processed by the medium-efficiency filter Can be sent directly to the user. 

It has the characteristics of high dust holding capacity, low resistance, large effective filtering area and large ventilation volume; the frame and the supporting frame can be reused. When replacing the filter, only the filter bag needs to be replaced, which is convenient and fast, and greatly reduces the operating cost.