RT filter

[yester925-blog]

Introduction of anti-static mid-efficiency bag filter

   Mid-efficiency anti-static bag filter, the English name is "mediumefficiencyanti-staticpocketfilter". Air filtration system pre-filtration, secondary filtration between clean room and clean room, filtration system with higher clean air requirements in hospitals, pharmaceutical factories, electronics factories, spray booths, general building air filtration equipment, high-efficiency filter pre-filtration Device.    The anti-static mid-efficiency bag filter uses an anti-static non-woven fabric as the filter material, with a galvanized sheet or aluminum alloy frame. It has the advantages of large dust holding capacity, large air volume, low resistance and repeatable cleaning. A metal strip is fixed between each filter bag to increase the strength and prevent the filter bag from breaking due to the friction of wind cutting when the wind speed is higher than the high wind speed. Each filter bag is evenly distributed in the bag width to prevent excessive expansion and mutual shielding when the filter bag is subjected to wind pressure, and reduce the effective filter area and efficiency. Each filter bag is fused by ultrasonic, with good air tightness and bonding strength, no air leakage or cracking. It is made of ultra-fine synthetic fiber with a special weave method to avoid the discomfort caused by old glass fiber materials to the human body. The filter material contains electrostatic fibers, which has a particularly good filtering effect on sub-micron dust, high dust collection rate, high air permeability, and long service life. . There are five kinds of efficiency bag filters available: 35%, 45%, 65%, 85%, 95%.    Regularly check whether the air inlet surface of the filter is blocked by debris and whether the surface of the filter material is damaged; if something blocks the surface, it should be removed; if the surface of the filter material is seriously damaged, a new filter material or a new filter must be replaced Re-installation; When installing the filter, ensure that the seal is well sealed with the frame body to prevent air volume leakage; do not use heavy objects to hit the surface of the filter, and do not use force to pull the surface of the filter material; when installing , The length direction of the filter bag mouth should be perpendicular to the ground to ensure the filtering effect of the air supply and increase the service life.

[yester925-blog]

What is honeycomb activated carbon?

    Honeycomb activated carbon is made of high-quality coal as the raw material, and the auxiliary materials form a square-hole honeycomb activated carbon block (filterability). As a new type of environmentally friendly adsorption material, it is mainly used for the purification of various organic waste gas with low concentration and large air volume. It is used to treat adsorption beds containing toluene, xylene, benzene, and other benzene, phenols, esters, aldehydes and other organic gases and malodorous gases and various gases containing trace heavy metals. The honeycomb structure makes the product volume density Small, large specific surface area, high adsorption efficiency, low wind resistance coefficient, excellent aerodynamic product reduction. The energy consumption of the equipment is reduced, the cost of the adsorption bed and the operation cost are reduced, and the purification efficiency of the waste gas treatment is high, and the purified gas fully meets the environmental protection emission requirements. According to the adsorption characteristics of honeycomb activated carbon, the activated carbon is mainly used for air purification, waste gas recovery (such as the recovery of gas "benzene" in the chemical industry), and precious metal recovery and extraction (such as the absorption of gold). With the development of science, the use of activated carbon has become more and more extensive. As the country attaches importance to the ecological environment, activated carbon is also playing an increasing role.

    1. Honeycomb activated carbon has a relatively developed void structure and a large specific surface area.

    Honeycomb activated carbon has a relatively developed void structure. In addition to active molecular sieves, it has a wide range of pores and has pores with different pore sizes. It can adsorb various substances with different molecular sizes. At the same time, it has a large number of micropores, so the specific surface area is large. The adsorption power is also great.

    2. Surface characteristics of activated carbon

    The surface properties of activated carbon vary depending on the activation conditions. The surface of activated carbon with high-temperature water vapor contains alkaline oxides. The activated carbon activated by zinc chloride contains acidic oxides on the surface, and the latter has a particularly large adsorption capacity for alkaline oxides. Therefore, the surface activation properties, pore size distribution, and pore shape of honeycomb activated carbon blocks are the main reasons why honeycomb activated carbon has selective adsorption.

    3. Honeycomb activated carbon

    Honeycomb activated carbon with strong catalytic properties is often used as a catalyst carrier in the chemical industry. Catalytic substances are deposited on the surface of the honeycomb activated carbon block and then used as a catalyst together. At this time, the role of honeycomb activated carbon is not limited to supporting activators. , It has a significant impact on the activity, selectivity, and service life of the catalyst. At the same time, it also has a catalytic effect. Therefore, honeycomb activated carbon is accompanied by catalysis in many adsorption processes and exhibits catalytic activity. For example, honeycomb activated carbon adsorbs sulfur dioxide and becomes sulfur trioxide through catalytic oxidation. In summary, the activated carbon block (16 pores/c㎡) made of activated carbon powder has a porous structure, huge internal surface area, and good heat resistance, acid resistance and alkali resistance, and can be used as a catalyst carrier. best choice.

[yester925-blog]

Application of bag filter in HVAC system

  The HVAC system is the so-called air conditioning system (heating and ventilation), which includes temperature, humidity, air cleanliness and air circulation control systems, and has a wide range of influences in the world's architectural design and engineering and manufacturing. Below we will introduce to you the application of medium-efficiency bag filters in HVAC systems.    The Mid bag filter mainly filters dust particles above 1-5μm. The filter material is mainly polyester non-woven fabric, polypropylene non-woven fabric, mesoporous foam, fine-cell foam, electrostatic fiber and medium-efficiency glass fiber filter paper. The medium-efficiency bag filter is the best structure of the medium-efficiency filter, and its cleaning and disassembly cycle is long.    Medium-efficiency bag filters are usually applied to HVAC systems in public buildings, hospitals, electronic computers, network communications, precision machinery, pharmaceuticals and other industries. The medium-efficiency bag filter needs to be replaced in March to April under the conditions of rated air volume, or when the resistance of the filter reaches more than 400pa, the filter must be replaced; if the concentration of dust in the environment is large , Then this life cycle will be shortened.    Medium efficiency bag filter    Medium-efficiency bag filters are mainly used in the filtration of air conditioning and ventilation systems, and in the purification of hospitals, pharmaceuticals, electronics, food, and other industries. The medium-efficiency bag filters can also be used as the front end of high-efficiency filtration to reduce the load of high-efficiency filtration. , To increase its service life, with a large windward area, a large amount of space, and low wind speed, it is considered to be a good medium-efficiency filter structure at present.    Many customers do not know whether to replace the medium-efficiency filter after using it for a long time? Next, I will explain the replacement cycle of the medium-efficiency bag filter.    Under the conditions of rated air volume, the filter needs to be replaced within 3 to 4 months; or when the resistance of the filter reaches 400Pa or more, replace the filter; if the filter uses a washable filter material, replace the filter material , Can be rinsed with water or a solution containing neutral detergent, let dry, and then replaced; it is recommended to clean twice to replace the new filter; if the dust concentration in the use environment is large, the life cycle will be reduced .    Precautions for the use of medium-efficiency bag filters:    1) Regularly check whether the air inlet surface of the filter is blocked by debris and whether the surface of the filter material is damaged;    2) If debris is found to block the surface, remove it;    3) If the surface of the filter material is severely damaged, replace it with a new filter material or replace it with a new filter and reinstall it;    4) When the filter is installed, it should be stable with good sealing performance at the blank holder of the frame, and air volume leakage;    5) Do not use heavy objects to go to the surface of the filter, and do not use force to pull the surface of the filter material;    6) During installation, the length of the filter bag mouth should be perpendicular to the ground to stabilize the filtering phenomenon of the air supply and increase the service life.    The above is an introduction to the application of medium-efficiency bag filters in HVAC systems. If you want to know more about air filters, you can pay attention to Guangzhou Rongteng Environmental Technology Co., Ltd.

[yester925-blog]

Application of air filter in semiconductor chip factory

 Today, semiconductor chip factories are the most critical of the cleanliness of the production environment, and they have the most demanding requirements for air filters. The dust sticking to the chip may cause an open circuit or a short circuit and directly affect the yield.

 One of the indicators to measure the degree of chip integration is the "line width", that is, the width of the wires on the integrated circuit. In the age when the line width was calculated in micrometers, the manufacturing environment's restriction on the particle size of dust was less than 1/10 of the line width. As the line width continued to decrease, 1/10 became 1/4 and 1/2. In 2002, the line width of the P4 processor in ordinary microcomputers was reduced to 0.13 μm. At this time, any dust may damage the circuit, and the traditional comparison of particle size and line width is outdated.

 Application of air filter in a semiconductor chip factory

 The traditional form of ventilation in the chip factory is "large circulation". The entire ceiling of the workshop is covered with HEPA filters without partitions, and the entire floor is a return air grid. Now some workshops of chip factories use high-efficiency filter units (FFU, FanFilterUnits) with their own fans. Both large cycle and FFU forms can achieve sufficient cleanliness, but there are differences in operation management and energy consumption.

 High-efficiency filters and FFUs that can be squeezed into the chip factory must be scanned and tested one by one. The chip factory believes that the test dust used in the traditional inspection method is itself a source of pollution, so the chip factory does not buy the sodium flame method and the DOP method.

 The sea salt ions in the air are the enemy of all electronics industries, but the particles of sea salt dust are relatively large, and ordinary filters can remove them. Some people say that the ideal location for the electronics industry should be far from the coast, but the domestic chip factory is built in the economically developed coastal area, and it is enough to spend a little more money on the filter.

 Chip manufacturers are particularly concerned about possible trace volatile elements on the filter. In recent years, there has been a high-efficiency filter material of PTFE fiber. This material has no volatile matter, but it is static. The filtered air needs to be electrically neutralized to eliminate ions in the air. There is less hidden danger and more A trouble. At present, the price of PTFE high-efficiency filter materials is relatively high, and most high-efficiency filters still use traditional glass fiber filter paper. The possible volatiles on the high-efficiency filter mainly come from the binder, cleaning agent, test dust, auxiliary materials used in the manufacturing process, and the filter manufacturer that supplies the chip factory should work hard to avoid trace volatiles.

 However, when the line width of the chip is as small as 0.5 μm, it is found that chemical pollutants in the air become the main hazard affecting the yield. Therefore, the air conditioning system of the later chip factory is generally equipped with a chemical filter. The chemical filter mentioned by the chip factory is an activated carbon filter, and its principle and manufacturing process are not complicated.

 The sources of chemical pollutants are outdoor air, the craft itself, people, and decoration materials. In most cases, designers and field personnel can't tell the type and concentration of pollutants. Therefore, the chemical filter used in the chip factory should have two characteristics: broad-spectrum adsorption performance and sufficient activated carbon materials. The so-called broad-spectrum adsorption means that it can absorb more or less anything. The most traditional, cheapest, and uneven micropore size granular activated carbon can have this function. If the type of pollutant can be determined, targeted chemical treatment can be performed on the adsorption material to enhance the adsorption capacity of specific pollutants. Filter suppliers sometimes also provide corresponding on-site testing services to help users determine the use of chemical filters, which requires the suppliers to have experts in chemical filtration and have a close relationship with authoritative laboratories. Unfortunately, few domestic filter manufacturers have worked hard on it, so most of the chemical filters currently used by domestic chip factories are imported products.

 The semiconductor industry is not a "smoke-free industry", it also has environmental problems. The latest technology and materials are often used there, and some chemicals have been used in large quantities before their safety has been evaluated. In order to reduce environmental risks, the exhaust systems of some chip factories are also equipped with chemical filters.

[yester925-blog]

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

[yester925-blog]

The function and characteristic of glass fiber bag air filter

Glass fiber bag filter, as the name suggests, is a filter paper material for glass fiber bag type air purification equipment. It is usually used for electrical products, biological pharmaceutical factory, machinery, instrument and petroleum chemical industry, textile printing light industry in areas such as routine air purification system. So, what are the characteristics of fiberglass bag air filter? What are the specific role glass fiber bag filter?

The glass fiber bag air filter has four levels of filtration efficiency, namely, F5, F6, F7 and F8, all of which are available for customers to choose. The filter material of air filter is mainly composed of glass fiber. Because of the special structure, extremely fine distribution and non-woven fabric strengthening, the dust capacity of the filter is relatively large. In addition, in order to ensure the safety of the glass fiber bag air filter, it also has a certain fire performance, fire rating up to UL-900 The level of Class2. The outer frame of the air filter can be plated with zinc, aluminum and stainless steel, etc. As the glass fiber of glass fiber bag air filter is a kind of inorganic non-metallic material with strong performance, it has good insulation, strong heat resistance, excellent corrosion resistance and strong mechanical strength. Of course, as a glass fiber, it also has certain characteristics, such as brittle, and wear resistance to be improved. Glass fiber is actually made of glass balls or waste glass as raw materials, and then processed. The processing technology includes a series of steps such as high temperature melting, drawing, winding and weaving. The diameter of the single filament of the glass fiber is very small, only a few microns, equal to one tenth of a hair of our ordinary people, and each bundle of glass fiber is made up of hundreds of single filaments. Therefore, the glass fiber bag type air filter mesh tensile strength is very large, small elongation, only 3%, so you can ensure better elasticity, elasticity coefficient is large, not easy to relax, but also to maintain a better rigid. As long as the customer in the elastic limit of the filter, can be extended, and maintain a strong absorption of impact energy. Because glass fiber is not easy to burn, it has excellent flame retardant and chemical resistance. In addition, the glass fiber bag air filter has low water absorption, high temperature resistance and relatively high filtration efficiency. In short, glass fiber bag air filter in clean air to keep strong filter efficiency and quality, it is not easy to damage, resistant to harsh environment. It is important to note, however, because of the glass fiber bag air filter used in glass fiber with poor ductility, so be careful during the installation, do not damage the glass fiber.

[yester925-blog]

Use and replace air filters

(1) The use of filters: primary, middle, high, sub-high efficiency, high efficiency, ultra high efficiency 6 filters have their own USES, must be used correctly, if not used properly, not only will not work but also will produce bad or even the opposite effect. Therefore, those who design, build, and maintain clean rooms need to take special care. Coarse effect filter is used as a pre-filter, generally set in the air conditioning cabinet, its role is to filter large particles, to protect the air conditioning equipment (such as surface cooler and heater, etc.) and medium effect and more advanced filters. General coarse effect filters cannot be used as terminal filters. The medium efficiency filter is generally located in the positive pressure section of the air conditioning box. Its function is to protect terminal filters such as sub-high efficiency and high efficiency filters. It's removing ≥1.0, right? Small particles of M. In general, medium-to-efficiency filters are intermediate filters and cannot be used as prefilters or terminal filters. Both hePA and ULTRA Hepa filters are used as terminal filters in the purification system. Generally placed on the suspended ceiling of the clean room. A high efficiency filter (HEPA) is a necessary terminal filter for a clean room. And the ultra high efficiency filter is 0.1? M, terminal filters necessary for level 10, level 1 or higher clean rooms. (2) Filter replacement: After a period of operation, when the resistance of the filter reaches its final resistance Hz, it should be replaced under normal circumstances, otherwise its performance will decline, can not reach the role it should play, and even affect the normal operation of the system. For coarse and medium efficiency filters, there are disposable discarded after use and can be cleaned after continued use, but the resistance of the clean rough and medium efficiency filters is much greater than its initial resistance, efficiency is also improved. However, sub-high efficiency, high efficiency and ultra-high efficiency filters are disposable and discarded after use. Reasonable management of air filters can not only ensure product safety and improve product quality, but also effectively save energy and reduce costs. Therefore, strengthening the management of clean room purification equipment is the core issue of clean engineering management.

[yester925-blog]

The pre-filter media is designed as a pre-filter or primary filter for the general ventilation equipment and air control system with heavy pollution. It filters ≥5μm particles and foreign objects. It has the characteristics of high dust holding capacity and low resistance, which is not only economical and practical, but also simple in structure.

[yester925-blog]

广州荣腾环境科技有限公司是集研发、生产、销售、服务于一体的初效过滤器、中效过滤器、高效过滤器、空气过滤器、过滤网、过滤棉、活性炭过滤器等净化设备的生产型企业。专门为电子厂房、半导体、液晶显示屏、生物制药、食品、石化工业、洁净室、医院、轨道交通、汽车涂装、商用和民用建筑等行业提供其所需的空气净化解决方案。

Guangzhou Rongteng Environmental Technology Co., Ltd. is a research and development, production, sales and service of primary effect filter, medium efficiency filter, high efficiency filter, air filter, filter net, filter cotton, activated carbon filter and other purification equipment Production enterprises. It specializes in providing air purification solutions for industries such as electronic workshops, semiconductors, LCD screens, biopharmaceuticals, food, petrochemical industry, clean rooms, hospitals, rail transportation, automotive painting, commercial and civil construction.

[yester925-blog]

What are the main types of air filters?

With the improvement of product quality requirements and the importance of the production environment, more and more air filters appear in our vision. In many air filters, according to the filtering effect, can also be divided into rough filter, medium filter and high efficiency filter. Today, xiaobian and we on the performance of a variety of air filters for a detailed explanation.

Coarse filter

Coarse effect filter is generally made into blocks and installed on the bracket. Its filter materials are mostly metal mesh, porous fiber, coarse porous polyurethane foam and other materials. Coarse effect filters mainly make use of the inertial collision of airflow, which makes some larger particle sizes (& GT; 5 m) of dust particles were separated from the airflow.

In order to increase the filtration area (i.e. increase the air handling capacity) and reduce the floor area, coarse effect filters are often constructed with a "human" shape. The coarse effect filter can also be made into a drawer type for easy replacement and cleaning of the filter material.

Coarse-effect filters can generally be used as prefiltration devices before high-effect or medium-effect filters. Other filters are usually used in the primary filter because of their high dust content.

Medium effect filter

The medium effect filter mainly USES glass fiber or synthetic fiber made of polyester, polypropylene fiber, nylon and other raw materials as filter materials. Due to the difference of filter material thickness and filter speed, its dust removal efficiency and range is higher. The dust particle size is larger than 1 m. Generally, it can be made into two types: drawer type and bag type.

HEPA filter

The hePA filter mainly USES ultrafine glass fiber and other filter materials, which can generally be made into paper. The filter paper needs to be folded several times in the process of using, so as to increase the contact surface and improve the filtration efficiency. Coarse and medium effect filter must be installed in front of the filter to filter dust particles less than 1 m. It is often used in clean or aseptic air-conditioning works.

[yester925-blog]

How many kinds of filter materials as combined HEPA filters?

What are the filter materials of combined high-efficiency filters? Most of the combined high-efficiency filters adopt V-shaped unique structural design to maintain stable and excellent filtration performance, and are widely used in intermediate or terminal filtration of commercial and industrial ventilation systems and air conditioning systems.    The filter material of the combined high-efficiency filter adopts high-quality ultra-fine glass fiber filter paper or polypropene filter material, and the unique V-shaped structure can minimize the structural resistance. Therefore, the combined high-efficiency filter is also called a large air volume/W-type/V-type filter. Its outer frame can be selected from plastic frames, galvanized frames, aluminum frames, etc. The most commonly used is the combined high efficiency of plastic frames filter. Composite materials have stronger toughness, corrosion resistance, shorter production cycle and better recycling.    The combined HEPA filter is suitable for use in research and production departments with various process requirements below 100,000 grade cleanliness, such as the pharmaceutical industry, biological laboratory, hospital operating room, food industry, cosmetics industry, etc. Its permeability is better and its service life is longer, which not only effectively reduces the cost, but also benefits the ventilation of the overall environment.    The unique seamless sealing technology of the combined filter is not deformed, and the unique non-leakage production process. The filter material is completely sealed with glue in the frame to prevent side leakage. The sealing layer completely seals the edge of the filter material and the partition. That is, it seals all the channels that may leak. The polyurethane viscose used in the standard H series filter penetrates into the filter material to prevent voids. The polyurethane lipid is soft and flexible, which can effectively prevent the filter material from being damaged by vibration and vibration during transportation.    HV series PU materials are high-density paper made of ultra-fine glass fibers. PU materials are pleated to maximize the effective filtering area of ​​the batch, thereby reducing the filtering speed of the filter material. This is a very important imported H&V3 for high-efficiency filters. Wave fiber filter material is waterproof and flame retardant and can be applied to high temperatures of 1000°F (538°C);    1. Box-type high efficiency filter without partition and large air volume.    2. Large filtering area, low resistance and long service life.    3. Standard galvanized steel frame, also available in stainless steel.    4. With 25mm thick mounting flange frame.    5. The highest temperature of continuous operation is 80.C.    6. Test one by one before leaving the factory.    7. Filtration efficiency: H11, H13, H14 (EN1822).    The filter media is folded 180 degrees on both sides to form a wedge-shaped pleated layer. There are two indentations when the filter material is bent, so that it forms a wedge-shaped box-shaped folding layer at the rear end of the partition. The wedge-shaped box-shaped fold layer can prevent the filter material from being damaged. Some filter manufacturers use single-indent or roll-marked filter material pleats, or even simply fold the paper manually. In this inert condition, the filter material is easily damaged by the sharp folding of the corrugated partition. Or damage the filter paper during excessive handling.

[yester925-blog]

What is the market price of HEPA filters?

Air filters are very new to 99% of people, because we rarely see them in daily life. But air filters are essential for HVAC, central air conditioning, and automobile spray shops, and they are of great significance. Air filters are divided into beginning, middle, and high efficiency. The price of each type will be different. What is the price of the high-efficiency air filter on the market? Below we will introduce to you.

   From the market point of view, the price of HEPA filters in the market ranges from several hundred yuan to thousands of yuan, but the price is related to many factors, such as the place of origin. Our country produces high-efficiency air filters by itself, but as exchanges at home and abroad gradually increase, the country has begun to import equipment from abroad. Imported equipment is definitely more expensive than domestic equipment. After all, tariffs are payable when entering the Chinese market.

   There is a direct relationship between brand and price. Now there are too many brands of filters, and the users of large and small brands on the market are dazzled. Often the brand with greater visibility will be more expensive, in addition to the quality of the device itself, and the promotion of awareness also requires advertising, and these are a lot of money. Ordinary users will choose ordinary brand equipment, the price is right, and the quality is superior. There is no need to choose an international brand, unless it is a user who has strong requirements for the brand. Here we recommend our company's filter, the market response has been very good.

   In general, there are many factors that affect the price, and users should not only look at one aspect when buying equipment. So where can I buy a high-efficiency air filter more at ease? Undoubtedly, we are looking for a special manufacturer, such as Guangzhou Rongteng Environmental Technology Co., Ltd. We are an air filter supplier integrating R&D, production and sales, and export to overseas orders every year. Ten million. And we also have professional staff to answer questions in time to help users easily solve.

   How much does a high-efficiency air filter cost? Where can I buy equipment more at ease? The above is a simple analysis for everyone. High-efficiency air filters are used in a wide range. In order to meet the needs of the majority of users, more types of equipment will be developed in the future, and I hope that users can choose equipment with suitable cost performance to bring greater value to the enterprise. .

[yester925-blog]

What role does patio cotton play in the spray booth?

   In daily life, many daily necessities will have a variety of colors, and how do these colors attach to it? This must mention the spray booth. Every item is sprayed and sprayed. Our daily life Among them, the ones that are exposed to more are mobile phones. The glass panels of Huawei mobile phones are bright and smooth. The patio cotton above the ceiling plays a big role.

   After the outdoor fresh air is dedusted through the primary effect filter cotton at the air inlet, it is sent into the plant by the fan to make the indoor air smooth. It seems very simple, but it is not. If you want to do this, you need to make use of your own advantages. There are 3 advantages.    Patio cotton    1.The patio cotton is processed by a high-performance hot-melt method made of organic synthetic fibers that are resistant to breakage; the incremental structure adopts a multi-layer progressive encryption technology, that is, the fiber density toward the pure air gradually increases, higher filtration efficiency, can According to the size of the dust, it is blocked at different density levels, which can accommodate more dust more effectively.    2. The air exit surface of the patio cotton is particularly dense, and a layer of checkered mesh is added to strengthen the setting. This structure not only keeps the filter material with high filtration effect and high dust capacity, but also extends the service life.    To ensure good air quality, due to the relatively low resistance of the filter material itself, it can also save system operating costs.    3. The filter material of the filter cotton is fully dipped, so it can prevent any fibers from falling off and leaking, and even if the system is in a state of vibration or temperature instability, this filter material can also filter out all particles larger than 5um; filter material There are full viscosity, surface viscosity, dry treatment for customers to choose.    The painting room patio cotton is designed for the baking room and the painting room. It is only used for the filtering of the end of the spraying. Its professionalism is not worse than that of any kind of filter cotton. If you want to know more about the air filter, you can pay attention to Guangzhou Rongteng Environmental WeChat official account.

[yester925-blog]

How long is the replacement cycle of the HEPA filter?

The HEPA filter is mainly used to collect particulate dust and various suspended matters above 0.5um, as the end filter of various filtration systems. Ultra-fine glass fiber paper is used as filter material, plastic paper, aluminum foil and other materials are folded as a dividing plate, and a new polyurethane sealant is used for sealing. It is made of galvanized sheet, stainless steel sheet, and aluminum alloy profile as the outer frame.    In the pharmaceutical industry, high-efficiency filters (HEPA) are used as final filters for the treatment and filtration of space air. Sterile production requires the use of high-efficiency filters, and the production of solid and semi-solid dosage forms is sometimes used.    So, what should you pay attention to when installing high efficiency filters? How often should the high efficiency filter be replaced?    Today, the editor will bring you answers to these questions.    Main features of high efficiency filters    1. High filtration accuracy.    The removal rate of suspended matter in water can reach more than 95%, and it has a certain removal effect on impurities such as macromolecular organic matter, viruses, bacteria, colloids, iron, etc. The treated water after good coagulation treatment, when the inlet water is 10NTU, The effluent is below 1NTU.    2. Fast filtering speed.    It is generally 40m/h, up to 60m/h, which is more than 3 times that of ordinary sand filters.    3. Large amount of pollutants.    Generally, it is 15-35kg/m3, which is more than 4 times that of ordinary sand filters.    4. Low water consumption rate for backwashing.    The water consumption of backwashing is less than 1-2% of the periodical water filtration.    5. Low dosage and low running cost.    Due to the characteristics of the filter bed structure and the filter material itself, the dosage of flocculant is 1/2 to 1/3 of the conventional technology. With the increase of the periodical water production, the operating cost per ton of water will also decrease.    6. Small footprint.    Make the same amount of water, covering an area less than 1/3 of the ordinary sand filter.    7. Strong adjustability.    Parameters such as filtration accuracy, dirt interception capacity and filtration resistance can be adjusted as required.    8. The filter material is durable and has a life span of more than 20 years.    Installation requirements for high efficiency filters    The installation of high-efficiency filters is the key to the installation and purification of air-conditioning systems and clean rooms. The following points should be noted:    1. Clean before installation.    2. The system should be blown clean.    3. The cleaning workshop should be cleaned again. If you use a vacuum cleaner to vacuum, you can't use ordinary vacuum cleaners. You must use a vacuum cleaner equipped with ultra-clean filter bags.    4. If installed in the ceiling, the ceiling should be cleaned.    5. After the trial operation system reaches 12h, clean the clean workshop again before installing the high-efficiency filter.    Introduction to leak detection of high efficiency filter    Commonly used instruments for high efficiency filter leak detection are: dust particle counter and 5C aerosol generator.    Dust particle counter    It is used to measure the size and number of dust particles in a unit volume of air in a clean environment, and can directly detect clean environments with a cleanliness level of ten to three hundred thousand.    Small size, light weight, high detection accuracy, simple and clear function operation, microprocessor control, can store and print measurement results, it is very convenient to test clean environment.    5C aerosol generator    The TDA-5C aerosol generator can produce aerosol particles with a variety of uniform diameter distributions. The TDA-5C aerosol generator can provide enough challenge particles when used with TDA-2G or TDA-2H aerosol photometers. Measuring high-efficiency filtration system.    The detection of domestic high-efficiency air filters is mainly based on GB/T13554-2008 "High-efficiency Air Filter", GB/T14295-2008 "Air Filter", JB/T6417-1992 "Air Conditioner Air Filter", GB/T6165-2008. High efficiency air filter performance test method. Filtration efficiency and resistance".    How often should the high efficiency filter be replaced?    In the relevant GMP guidelines, there is no specific value for the useful life of high-efficiency filters.    According to the requirements of GMP, there must be no leakage of the filter, which needs to pass the confirmation and regularly perform the leak test in ISO1464-3, which is necessary for the sterile workshop.    According to the technical interpretation of Appendix 1 (PIC/SP032-2), the leak test is conducted every 6 months for A/B level and 12 months for C/D level.    The FDA sterility guidelines require periodic inspections. The requirements of Appendix 1 also apply here.    Leakage can be repaired, but the repaired area cannot exceed 0.5% of the area of ​​a single filter.    From a practical point of view, we can say that the maximum service life depends directly on the pressure difference between upstream and downstream. Only when the pressure difference between the upstream and downstream reaches a fixed value affects the performance of the ventilation system, or the energy demand exceeds the cost of filter replacement, filter replacement is meaningful.    However, the filter must pass the leak test. In fact, many companies will not use a filter for more than 8 years.    As mentioned above, there are no regulations that specify such values, which are only based on experience.    Replacing the high-efficiency filter is necessary according to the air volume and leak detection during air-conditioning verification, but at the same time, the longest life cycle of the specific high-efficiency filter should be worked out, so there should still be a regular concept. At the same time, filter integrity tests must be conducted regularly.    High-efficiency filter leak detection can generally use a dust particle counter in non-critical areas, but the A-level clean area high-efficiency filter is not recommended to use a dust particle counter to scan for leak detection.

[yester925-blog]

Meltblown prices plunge, mid-efficiency bag filter prices trend

Affected by the epidemic, the prices of meltblown materials in the first half of the year were like roller coasters. In February, the prices of meltblown materials rose from 100,000 yuan/ton to 750,000 yuan/ton. Until now, the prices of meltblown materials have been quoted at level 90 and 30,000. RMB/ton, 95-level spot price is 120,000 yuan/ton, and 99-level spot price is 220,000 yuan/ton. During this period, many products containing meltblown fabrics were discontinued, such as the medium-efficiency bag filter used in our central air-conditioning air supply system.

 The filter material of most medium-efficiency bag filters is non-woven fabric, which is divided into three layers: PP material, melt-blown fabric, polyester fiber cotton (two-component melt-blown). The function of each layer is interlocking, and the role of PP material is to protect the melt-blown layer from damage. The meltblown layer is very soft, without PP material protection, it is easy to hang and damage. If the meltblown layer is damaged, the medium-efficiency bag will be invalid.  The meltblown layer is a guarantee of efficiency. The strong ability of the meltblown to adsorb dust particles increases the efficiency. In the process of storage and use, static electricity will continue to be lost, and the efficiency will gradually decrease. The stronger the ability of the melt-blown material to retain static electricity, the longer the service life. After the static current is lost, the melt-blown layer will fail or fail to achieve the desired effect. Need to be replaced.  The function of polyester fiber cotton (two-component melt-blown) is to adsorb large-diameter dust particles, and the related parameters are dust holding capacity and thickness, etc. If there is no polyester fiber cotton interception, large-diameter dust particles are directly adsorbed In the melt-blown layer, it will block the melt-blown layer, rapidly increase the resistance, and make the medium-efficiency bag invalid.  Now, with the price of meltblown cloth raw materials falling, can medium-efficiency bag filters be restored? What is the price trend of medium efficiency bag filters? I believe this is a problem that many consumers are more concerned about.  Our reply to everyone is: Although the price of meltblown cloth raw materials has dropped, and the goods can indeed be obtained, the overall production cost of the medium-efficiency bag filter is still relatively high, so the quotation given to everyone will be more than usual The price below is a little higher.  However, we expect that in July, raw materials for melt-blown fabrics should return to normal prices. By then, the price of the medium-efficiency bag filter can also return to its normal price. Therefore, the bosses who urgently need the medium-efficiency bag filter can place the order in advance to avoid order concentration, which will extend the delivery time.

[yester925-blog]

How to distinguish the filtration efficiency grade of high efficiency filter？

   High-efficiency air filters are the last line of defense for air purification, and they are important. An enterprise can be a little vague about the technical standard parameters of the primary air filter and the medium efficiency air filter, but the air index of a cleanroom is directly related to the high-efficiency air filter. We must apply the filter level and application of the high-efficiency air filter Only an accurate understanding of the scope will enable the cleanroom to achieve its intended purpose. Only when the expected purpose is achieved can the one-time pass rate of the enterprise's products be guaranteed. Today, the professional air purification equipment factory will explain the classification and technical parameters of high-efficiency air filters, as well as its composition. To avoid improper purchases in the future, only to look back for the reasons that caused irreparable losses.    Air filters are generally divided into two forms, one is a high-efficiency filter without a partition and a high-efficiency filter with a partition. Both filters are filter media with a diameter of more than 0.3 microns, and the removal efficiency can reach more than 99.7%. The biggest difference between the two filters in the manufacturing process. The high-efficiency filters without separators are generally about 70mm thick, while the high-efficiency filters with separators are mostly 220mm thick, and the thickness of high-efficiency filters with separators is not like Not as thin as a partition. There is also a classification of HEPA high-efficiency air filter and ULPA high-efficiency air filter. The characteristics of HEPA high-efficiency filter are    (1) The filter material is double-sided with metal mesh. In order to protect the HEPA filter from back damage. The thickness is the same as the high-efficiency filter without a partition, and it can provide other thicknesses such as 50mm, 69mm, 90mm, and so on. The HEPA filter has a seamless sealing technology, which has a better sealing effect, is more durable, and is not easy to leak. Filtration levels: H11-H14, U15, U16 (EN1882). Counting MPPs efficiency by laser scanning one by one: 95%-99.995% (EN1882). The manufacturing process of this air filter is that the filter core is folded with ultra-fine glass fiber filter material by glue, and the outer frame can be made of laminated wood, stainless steel plate and aluminum alloy plate, which are closely bonded by polyurethane glue, with lightweight and breathability large. It can remove more than 99.99% of particles with a diameter of more than 0.3 microns (1/200 of the hair diameter) and is the most effective filter medium for pollutants such as smoke, dust, and bacteria. It has been widely used in operating rooms, animal laboratories, crystal experiments, aviation, and other high-clean places.    The characteristics of the ULPA high-efficiency filter is that the filter element is made of ultra-fine glass fiber filter material, which is folded by glue. The outer frame can be made of stainless steel plates and aluminum alloy plates. It is closely bonded by polyurethane glue. It has lightweight, large air permeability, and dust collection. The rate is as high as 99.95-99.999%, and it is resistant to alkali and high temperature. Uses: suitable for 10000-100 clean systems, air conditioning systems, so the products have been widely used in electronics, microelectronics, semiconductors, optical devices, biological and medical circuits, cameras, and optical instruments, precision machinery, and other fields.    ULPA ultra-high efficiency filter, ULPA is based on HEPA and has further strengthened the filtering effect of HEPA. The filtering efficiency of ULPA for particles above 0.3 microns reaches 99.99%. Compared with HEPA, ULPA has a more compact filter material structure and higher filtration efficiency. ULPA filter has a larger filtering area and stronger dust holding capacity.    When the HEPA high-efficiency filter reaches the HEPA standard filter, the effective rate of 0.1 microns and 0.3 microns reach 99.998%. The HEPA high-efficiency filter is characterized by seamless sealing technology, which has a better sealing effect, longer-lasting, and less leakage.

[yester925-blog]

Do you know the application of air filters in automobiles?

   With the rapid economic development, people pay more and more attention to their own health. In view of the heavily polluted outdoor air, people are paying more and more attention to the air quality in the small spaces in which they live, and beginning to pay attention to household air filters and car air filters. How much do single people know about car air filters? Let's discuss the car air filter together, pay attention to the application of the air filter in the car and a few places that need attention, so that it can play a better air purification effect.    1. Purchase of air filter. People do not pay much attention to the quality of car air filters when buying or replacing cars. Although most cars now have their own brand stores 4S, but for the problem of buying car air filters, I believe many friends know the role of air filters Not very comprehensive. For example, air filters that are cheap and of poor quality are often not selected. These filters are generally effective in air purification, especially for small suspended particles in the air, which cannot be effectively filtered, and these filters are the most The important point is that it has a short service life. For example, the air filter stops functioning during use. So serious consequences will appear that is affecting the quality of the car itself. For example, if the performance of the engine drops or rises sharply, the car air filter will be replaced. Because of the limitations of the car maintenance operation manual, the car filter will be replaced after the mileage provided by the guide. However, today's cities have different levels of pollution, and the corresponding amount of suspended particles is different. If the city is more polluted, the replacement and maintenance of the car's air filter cannot be simply performed according to the instructions. The state is obviously abnormal, so the maintenance cycle should be shortened to improve the quality of the car filter. This is the correct way to maintain.    2. The influence of the air filter on the performance of the car. Many friends think that the car air filter does not have much effect. After using the car for a period of time, if the air filter has been blocked or has lost its function, the air filter will be removed or replaced. There will only be one result of this, and the performance of the car engine is very serious for car wear. According to the test data of automotive experts, without the air filter of the car, the wear rate of the car engine cylinder will exceed eight times, the wear rate of the piston will exceed 3 times, and the wear rate of the piston ring will exceed 9 times.    The above is the company's humble opinion on the application of car air filters. I hope to help friends who love cars, car care, and caring for themselves.    If you want to know more about the air filter, please pay attention to the air filter network www.rtfiltech.com