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The use and characteristics of high temperature air filter
The use and characteristics of high temperature air filter
High temperature air filter application:
The high temperature air filter is mainly used to filter the tar, soot, dust and other particles generated in the high temperature sterilization tunnel of the pharmaceutical factory or the high temperature drying room.
High temperature filter features:
Although filters are often used in our daily life, if we encounter a high-temperature working environment, the filters we often use in our lives will be overloaded in high-temperature environments and cause damage, so there will be high-temperature resistant filters. Appear. High temperature resistant filters are used in high temperature antibacterial tunnels, high temperature drying rooms, laboratories, pharmaceutical factories and other fields. It seems that the use of high temperature resistant filters is still very common. However, its classification is based on the efficiency of the work. According to the work efficiency, the high-temperature filter can be divided into primary and high-efficiency filters. There are fewer intermediate-efficiency links in the middle than other filters. Moreover, the high temperature resistant filter uses special synthetic fibers or glass fibers to improve the efficiency and accuracy of filtration.
The high temperature filter itself has very good durability. When it uses ultra-fine glass fiber as the filter material, the improved filtration effect and filtration efficiency are very obvious. Other parts of its materials will also choose to use aluminum foil boards or offset paper for segmentation, which protects the filter material on a certain basis and reduces the risk of use. The outer frame of the high temperature resistant filter will be made of galvanized or other stainless steel materials, which can ensure the normal use of the high temperature resistant filter, and also improve the strength of the high temperature resistant filter, which increases the filtering area to a certain extent.
The main feature of the high temperature resistant filter is that it is resistant to high temperature, and its high temperature tolerance range can reach 350 degrees. The high temperature filter can continue to operate normally in an environment of 250 degrees, and there is no leakage problem like other filters. This is its biggest feature. High temperature filters can also be subdivided into three types: flat, HTR, and folded.
The flat type is the material of glass factory long fiber. The filter material is mainly laid in the filter, and both sides are made of molybdenum metal mesh and square mesh. The temperature that can withstand is 400-450 Spend.
Folding type, this high temperature resistant filter has good strength, the filter material is not easy to be blown and broken, and it can be used normally in the environment of strong wind. The temperature of the folded high temperature filter can reach 250-310 degrees
The above is the main introduction of Xiaobian about the characteristics of high temperature resistant filters. I briefly understand their main classifications, but there are some problems that Xiaobian still wants to remind everyone. When using it, you need to pay attention to the stains and dust in the environment. When there are too many dust and stains, you need to do cleaning work, otherwise it will affect the use of the equipment, and the use of environmental hygiene must be up to standard. The operation of the high temperature resistant filter needs to be performed by professional technicians, so as to improve the use efficiency of the high temperature resistant filter. The use of any mechanical equipment is the same, requiring regular cleaning and maintenance, otherwise it will have a certain impact on the service life of the high temperature filter.
High temperature filter category:
[Flat type high temperature filter]
1 It is made of domestic or imported glass long fibers, which are laminated in a non-woven way;
2. The strength and elasticity of the fibers are good, and the filter materials will not be compressed together due to wind resistance, which will affect the dust holding capacity;
3. The filter material is laid flat in the filter, and 40-120 mesh metal mesh is used on both sides, and then a large square mesh is used for support;
4 Filter temperature resistance: 400-450℃
5. Filtration level: G4, F5 Performance characteristics: 1. The filter has good chemical resistance, strong heat resistance and low hygroscopicity; 2. The filter has high dust holding capacity, long service life and non-combustibility.
[Folding high temperature filter]
1. Both sides of the filter material are folded with galvanized wire mesh or stainless steel mesh, with good strength, and the filter material is not easy to be broken by blowing;
2 Double sides are reinforced with galvanized square mesh, galvanized diamond mesh, and stainless steel square mesh, which can be used normally in the environment of high air volume;
3 Filter temperature resistance: 250-300℃;
4. Filtration level: G3 Performance characteristics: 1. Large filter area and long service life; 2. Large air volume, low initial resistance, and non-combustibility.
Application areas: 1. General primary filtration, air filtration of hot-air high-temperature ovens; 2. Air filtration of high-temperature ovens in coating plants.
[HTR high temperature filter]
Performance characteristics:
First, there are various efficiency specifications of H10~H14 to meet different requirements
Second, the stainless steel frame is equipped with special temperature-resistant sealing materials, which can withstand temperatures of 250oC and 319oC
Third, special folding equipment for folding
Fourth, special glass fiber filter paper as filter material
Fifth, special aluminum foil spacer
Sixth, each filter is treated with anti-volatile and strictly tested
Application:
HTR high temperature filter is mainly used for equipment and systems that require high temperature air purification, such as ultra-clean ovens, ultra-clean cleaning machines, and chemical industries.
Precautions for use
1. The filtration efficiency of high temperature and high efficiency filter
Due to the influence of the physical properties of the glue (the fluidity is too poor), the actual filtration efficiency of the 250°C H13 high-temperature high-efficiency filter is between H12-H13. ; 350-400 ℃ H13 high temperature high efficiency filter, the actual filtration efficiency is between H11-H12.
2. Precautions before using high temperature and high efficiency filter
Because the organic silica gel and inorganic glue used in the high-temperature resistant high-efficiency filter are cured from the surface in the curing process, the thicker the glue injection, the more difficult it is to cure. Under normal circumstances, the glue curing time is 3-7 days. The cured high-temperature and high-efficiency filter is directly loaded into the high-temperature equipment for normal use.
It is bound to cause high temperature glue cracking, expansion and glue separation from the outer frame and other phenomena; in view of the above problems, the following two solutions are specially made:
1 The high temperature and high efficiency filter needs to be used normally after 7 days;
2 If the customer needs to install it immediately, it is recommended that the customer must operate the following methods before using our high-temperature high-efficiency filter:
The high-efficiency filter with high temperature resistance to 250 °C is slowly heated to 100 °C in the high temperature equipment, and then shut down for cooling after constant temperature for 2 hours;
Adjust the temperature to 150°C for 1 hour and then shut down for cooling
Adjust the temperature to 200°C for 1 hour and then shut down for cooling
Adjust the temperature to 250°C for 1 hour and then shut down for cooling
After the last slow cooling, it can be used normally.
The high-efficiency filter with high temperature resistance of 350-400 °C is slowly heated to 100 °C in the high-temperature equipment, and then stopped for cooling after 2 hours of constant temperature;
Adjust the temperature to 150°C for 1 hour and then shut down for cooling
Adjust the temperature to 200°C for 1 hour and then shut down for cooling
Adjust the temperature to 250°C for 1 hour and then shut down for cooling
Adjust the temperature to 300°C for 1 hour and then shut down for cooling
Adjust the temperature to 350°C for 1 hour and then shut down for cooling
Adjust the temperature to 400°C for 1 hour and then shut down for cooling
After the last slow cooling, it can be used normally.
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