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The quality of the detected air filter often
2013-05-03
We will teach you detect The quality of the air filter: First of all: to see the depth of the filter paper, fold the number of deep filter paper, filter paper folding number of air filters area. Air filter area, and air permeability. Second: the air filter to do waterproof energy consumption is not particularly difficult, as long as it is made... We will teach you detect The quality of the air filter: First of all: to see the depth of the filter paper, fold the number of deep filter paper, filter paper folding number of air filters area. Air filter area, and air permeability. Second: the air filter to do waterproof energy consumption is not particularly difficult, as long as it is made ??of high quality wood pulp filter paper can meet the requirements, but the production costs would be slightly higher, the real difficulty is not only waterproof energy consumption, Finally: also to meet the filtration precision and air permeability, can meet the requirements of these three areas is really good air filter. View Details
High efficiency filter can effectively ensure the quality of the air inside the vehicle
2013-04-19
Approved by the state commission, the newly established National Indoor interior environment and environmentally friendly products Quality Supervision and Inspection Center has officially work, and published the first national indoor environment and interior environment, industry trends report. Two methods to detect air pollution According to the... Approved by the state commission, the newly established National Indoor interior environment and environmentally friendly products Quality Supervision and Inspection Center has officially work, and published the first national indoor environment and interior environment, industry trends report. Two methods to detect air pollution According to the National Indoor interior environment and environmental products quality inspection center's Director Song Guangsheng, in March this year, the national indoor air quality standards promulgated 10th anniversary and national passenger cars and Air Quality Assessment Guidelines promulgated and implemented the first anniversary, after a more than a year of preparation, under the leadership and guidance of the national environmental quality control departments, on the basis of the former State indoor environment and indoor environmental quality supervision and inspection center, formally approved the establishment of China's first professional indoor interior environment national test center for quality inspection test. The quality inspection center for indoor and interior of the NPC and the attention of the community environmental pollution problems, released its first national indoor environment in the vehicle industry trends report, also released "indoor air purifiers PM2.5 test "technical specifications and volatile organic compounds of automotive interior parts testing and evaluation approaches. Song Guangsheng said that the implementation of China's 10 years ago, "indoor air quality standards have been specified respirable particulate matter (PM10) daily averages of 150μg/m3, estimated PM2.5 daily average concentration of up to about 80μg/m3. According to the conditions in China in 2012 released "Ambient Air Quality Standard GB3095-2012, the Ministry of Environmental Protection provides ambient air concentration of PM2.5 control a standard daily average concentration of 35μg/m3, with the World Health Organization recommended PM2. The 5 daily average concentration of 25μg/m3 standard similar PM2.5 test evaluation criteria can be used as indoor and in-car environment. Air purifier purification effect According to tests, the air purifier with a high efficiency filter function can effectively purify the indoor and in-car environment PM2.5 pollution. Song Guangsheng said, HEPA dust filters can purify the 0.3μg of particulate matter, purification efficiency can reach 99.9%. If the air purifier installed ultra-high efficiency filter media, the removal efficiency of 99.999%, can effectively reduce the health impacts of PM2.5 pollution in the air. Therefore, in the case of atmospheric pollution issues within a short period of time is difficult to solve, the quality inspection center experts are of the opinion that the use of air purifier is one of the most effective method of purifying indoor and vehicle pollution. Air purifier to remove particulate matter PM2.5 technical specification of test methods developed by the National Indoor interior environment and environmental products quality inspection center organized experts to air purifiers ability to remove PM2.5 parameters as the performance index, the use of "clean air" , m3 / h. This method is suitable for indoor, car, cabin and aircraft air purifier to remove air PM2.5 in the determination of the amount of clean air. Specification requirements, the air purifier to remove airborne particles PM2.5 clean air measured value shall not be less than 90% of the nominal value. The purification efficiency of the air purifier to remove airborne particles PM2.5 should be not less than 50%. Three aspects of governance vehicle pollution Environmental pollution problems for the existing car, Song Guangsheng, mainly around the three aspects of the work. The first is how to control the vehicle air pollution, especially air pollution problems of the new car. New car pollution problems have attracted the attention of the whole society. The last two sessions, Geely chairman Li Shufu has proposed a special motion this year, car and atmospheric air quality problems. Solve new interior air quality problem has become one of the main problems of automotive enterprises to improve the quality of the car, the national indoor environment and indoor environmental products quality inspection center inside the air quality testing laboratory to become China's first car with a national certification and accreditation air quality testing laboratory, will be engaged in this work. Second is to control the pollution problems of the automotive interior parts. According to Song Guangsheng, the National Indoor interior environment and environmentally friendly products quality inspection center on the widely solicited opinions basis, to develop the automotive interior parts VOC test method technical specifications, as well as automotive and automotive interior parts enterprises to carry out car The interior pieces VOC testing, have created favorable conditions so as to improve the quality of air inside the vehicle. In addition, Song Guangsheng, in the atmospheric environment the haze pollution problems within a short time is difficult to solve the case, how to design car air-conditioning systems and air purification system to ensure that the conditions of air pollution, air quality inside Safety and Health, which is trying to solve the problem of the auto companies and interior environmental protection enterprises. At present, the National Indoor interior environment and environmentally friendly products quality inspection center is organizing experts to the development and promotion of technologies and products. View Details
Air filter principle
2013-03-29
Collide and stick Dust particles in the air, or inertial motion with the air, or do random motion, or by some kind of field force mobile. When the movement of the particles hit the obstacle, the van der Waals force between the surface of the particles with the obstacle so that they stick together. Fiber filter materialThe filter material should b... Collide and stick Dust particles in the air, or inertial motion with the air, or do random motion, or by some kind of field force mobile. When the movement of the particles hit the obstacle, the van der Waals force between the surface of the particles with the obstacle so that they stick together. Fiber filter materialThe filter material should be able to: effectively intercept dust particles, without too much resistance to airflow. Non-woven fiber and paper specially made to meet this requirement. Messy interwoven fibers formed numerous road dust barrier, the wide space between the fibers allow air flow smoothly through. The principle of inertia Inertial motion of large particles in the gas stream. The airflow Obstacle bypass, the particles deviate from the direction of air flow due to inertia and hit the obstacle. The larger the particle, the inertial force is stronger, the greater the possibility of striking an obstacle, so the better the filtering effect. Diffusion theory Small particles for the random Brownian motion. Used in the mathematical treatment of the random motion of the mass transfer in the diffusion theory, diffusion theory said. The smaller the particles, the random motion of the more violent, more opportunity to hit obstacles, and therefore better filtering effect. Efficiency with size and different particleFilter traps dust amount the unfiltered ratio of the amount of dust in the air to "filtration efficiency". Less than 0.1um (microns) particles as diffusion movement, the smaller the particle, the higher the efficiency; greater than 0.5um particle motion inertia particles the greater efficiency Zhao Gao. Between 0.1 ~ 0.3um efficiency there is a minimum point, the particle size of dust filter. Resistance Fiber bypass the airflow, tiny resistance. Numerous fiber resistance is the sum of the resistance of the filter. Filter resistance with increasing gas flow to improve the relative wind speed can be reduced through the filter media, by increasing filtering materials, to reduce the resistance of the filter. Dynamic performance Capture the dust generated additional resistance to airflow, Thus, the resistance of the filter use is gradually increasing. Capture dust filters media together as one to form a new obstacle, the filtration efficiency slightly improved. The dust was caught mostly gathered in the windward side of the filter material, the greater the filter area, can accommodate dust more, the longer the life of the filter. Filter scrapped Filter Dust on the more, the greater the resistance. Filter life is coming to an end when the design does not allow the degree of resistance to big to sometimes excessive resistance will filter to capture dust flying. such risks, the filter and the scrap. Static electricity If the filter material with electrostatic powder with electrostatic filter effect can be significantly improved. The reason: Electrostatic dust to change the trajectory and crashed into an obstacle, the electrostatic force stuck in work. View Details
Adhesives in the air filter
2013-03-22
Abstract the principles of the adhesive, composition, classification, and research on the application of the air filter bag in the analysis. Keywords adhesives; air filter; applications. 0 Introduction [1] The so-called adhesive cohesive role due to the adhesion of the interface and the substance of the two or more of the workpiece (or mate... Abstract the principles of the adhesive, composition, classification, and research on the application of the air filter bag in the analysis. Keywords adhesives; air filter; applications. 0 Introduction [1] The so-called adhesive cohesive role due to the adhesion of the interface and the substance of the two or more of the workpiece (or material) is connected with a natural or synthetic, organic or inorganic like substances are collectively referred to as adhesives, also called a binder, adhesive, customarily referred to as glue. Of course, not any kind of material can be used to do adhesives, the adhesive must meet the following requirements: (1) whether what state, liquid coating should be presented. (2) on the surface of the adherend can be sufficiently infiltration. (3) must be able to transition from the liquid to the solid state, to form a tough layer. (4) after curing has a certain strength, the stress can be passed, and resistance to damage. (5) be able to withstand the test of time. An adhesive composition of [2] Adhesive composition of its source are very different, have some pure resin or rubber is dissolved in a solvent, can be homogeneous or heterogeneous in the two or more parts connected together, such materials i.e. can be called a binder. However, as a class of goods or products in order to meet the requirements of the overall performance, still need to add a series of auxiliary components. Therefore grade name, stable quality, the consolidated performance or a dedicated performance excellent adhesion with the sealing material is the utility of the adhesive or sealant. Overall, the composition of the adhesive comprises the adhesive material, a curing agent, promoting agents, plasticizers, tougheners, diluents, solvents, fillers, coupling agents, antioxidants, flame retardants, tackifiers, polymerization agent. In addition to the adhesive material is indispensable outside, the rest of the components will depend on the performance requirements of the decision to join or not. 2 adhesive classification [1] So far, has been the advent of the adhesive, grades confused, variety, easy to master, you need to be categorized. Different point of view, the classification method has not been uniform. Common classification methods are summarized as follows: (A) a base or main component classification, including an inorganic binder and an organic binder, an organic binder and is divided into two categories of natural and synthetic. (B) the physical form of classification, glue, gum paste, powder, glue stick, film, tape. (C) evaporation of the water-based type, and solvent volatilization type, hot melt type, chemical reaction type, varistor type classification, there are press curing methods. (D), by classification, structural adhesives, non-structural adhesives. (E) use classification, universal binders, high-strength adhesive, soft materials, adhesives, hot melt adhesives, pressure sensitive adhesives and adhesive tape, specialty adhesives. Application of the adhesive in the air filter Every aspect which modern science and technology and people's daily life, are inseparable connection problems. Riveted, welded, threaded connections, as well as nails, sew followed a long-time tradition connection, Modern adhesive technology unique. Especially the rapid development of industry in the molecular era, air filter material, the unique role of adhesives in the filter industry, is no substitute for some traditional connection sealing method is a more scientific and more practical, more effective new technology production to solve the critical problem, said filter industry can not do without adhesives. 3.1 adhesive frame assembly - the cardboard / filter / metal bonding Cardboard, filter wire, because these materials are mostly of some flexible material, which is more difficult to do some traditional connection, while the adhesive to make it all a breeze. Most of these processes using emulsion adhesives, hot melt adhesives can also be used of course, if the process allows. The emulsion-type adhesive curing methods are generally water-based evaporation type, by the influence of temperature and humidity due to the evaporation of water is relatively large, Therefore, from the process is relatively high on the surrounding environment requirements. Some manufacturers to use a solvent-based adhesives, from the process is relatively easy to implement. However, the strengthening of environmental regulations prompted adhesives to solvent-free transition, as Joint Chemical Laboratory of the Taiwan Industrial Technology Research Institute, said, the adhesive industry trends can be summarized in these few words: low emission and higher HueyHueyLo. 3.2 adhesive bag filter Stitch gap seal bag filter, screw assembly before the temporary bonding, and both reflect the unique features of adhesives, needle seam sealing of voids majority of hot-melt adhesives, screws before assembling The temporary adhesive multi-evaporation type of water-based adhesive or environmentally friendly solvent-based adhesive (see Figure 2). 3.3 Adhesive - pleated air filter The windward side of the number of times in order to ensure adequate dust holding capacity (life) and low resistance filter paper in the filter area have filters, a sheet filter material folded filter paper needs in some way will be one of the layers to separate [3]. Adhesives again play an active role in this regard. 1970s basically white cardboard and aluminum foil as the split objects. 1975, Sofilta start with hanging latex thread as the split objects. As technology advances, the 1990s, began using hot melt away from the fixed pleats and guarantee a certain fixed distance between each layer of filter paper, and hot melt adhesive can be adjusted according to become resistant to a moderate level of resistance various types of burning, etc., so that the filter shows a variety of excellent properties, mainly for manufacturing a pleat filter, without the separator filter and some household small filters. It with a tasteless, good temperature resistance, rapid adhesive, sticky hands even drip is not absorbed by the filter paper characteristics. 3.4 adhesive on the air filter - sealed edges, capped and fixed pleats from the The application of the adhesive in this regard is a chemical reaction type adhesives, epoxy adhesives mostly used, later with the introduction and development of the polyurethane adhesive technology, since the epoxy resin is relatively brittle, the impact resistance is relatively poor, thus gradually polyurethanes substituted. Mainly used in the manufacture of dense pleated filter separator filter separator filter and cartridge filter, and small household filter. Of course, some companies also part of the product's Edge and given pleated from the use of hot-melt adhesives, such as small household filters and cartridge filters. Filters have special requirements such as high temperature filter according to the actual structure you need to select the appropriate specialty adhesives, such as the current high-temperature epoxy adhesive, silicone adhesives, heterocyclic polymer adhesives and inorganic adhesive [4]. 3.5 Application of the adhesive in the air filter - the washer bonding, sealing adhesive strips Air filter initially finished, you need to install the seal or gasket, this time on the need bonding, this bonding is generally based on the strength needed to select a suitable adhesive strength of large general adhesives need to select the type of chemical reaction according to the process , such as solvent-based adhesives and Cyanoacrylate, strength, weak selection pressure sensitive adhesive. With the continuous development of the filtration industry is now a mature one of the polyurethane foam sealing strip, the right color, foam density, flame resistance, and can be adjusted according to customer requirements. Moreover, no partition filter sump filters, which also appeared in place of the sealing strip is to use a liquid tank sealant to play a role in sealing. In fact, the the sump sealing device is a vertical laminar flow of the large area of ​​the most advanced, most reliable ceiling apparatus. Sump seal is superior to the commonly used sealing methods (mechanical clamping device), filter installation convenient, reliable sealing, sealing one of the methods commonly used in advanced countries on the international. View Details