Composite filter material with high acid gas adsorption capacity

Abstract

The utility model discloses a composite filter material with strong adsorption capacity to acid gas, which relates to the technical field of air filtration and comprises a filter material protective layer, signal amplifier bodies are sleeved at the top end and the bottom end of the outside of the filter material protective layer, and a humidifying filter screen is arranged in the filter material protective layer. The humidifying filter screen is arranged on the inner side and the outer side of the humidifying filter screen, composite filter material mechanisms used for filtering gas are arranged on the inner side and the outer side of the humidifying filter screen, each composite filter material mechanism comprises a pre-filtering layer, the inner side of each pre-filtering layer is connected with an HEPA filtering layer in a clamped mode, and the inner side of the humidifying filter screen is connected with an activated carbon filtering layer in a clamped mode. According to the composite filter material with the strong adsorption capacity on the acid gas, secondary activation can be carried out on the activated carbon by utilizing a special process, so that basic groups on the surface of the activated carbon are increased, meanwhile, acidic groups on the surface of the activated carbon can be reduced, and the basic groups on the surface of the activated carbon are modified; the adsorption efficiency and the adsorption capacity of the acid gas are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air filtration, in particular to a composite filter material with strong adsorption capacity for acidic gases. Background Art

[0002] Acidic gases are a type of air pollution. For example, the main anthropogenic source of acidic gas SO2 is related to energy consumption, and economic development cannot be separated from energy support. my country is a major energy producer and consumer. SO2 is a colorless, moderately irritating gas that mainly affects the respiratory tract. SO2 mainly comes from the combustion of sulfur-containing fuels. A large part of the SO2 in the air comes from thermal power generation and industrial production. Inhalation of SO2 can impair respiratory system function and aggravate existing respiratory diseases (especially bronchitis and cardiovascular disease). For those who are easily affected, in addition to changes in lung function, there are also some obvious symptoms such as wheezing, shortness of breath, and coughing;

[0003] During use, due to the different degrees of wear of the multiple layers of filter material inside the composite filter material after long-term use, some gases are not completely processed during the filtration process, affecting the efficiency of subsequent acid gas filtration.

[0004] To overcome these shortcomings, the existing technology (Chinese patent application number CN208389763U, filed on April 19, 2018) comprises a first non-woven fabric layer, a second meltblown fabric layer, an activated carbon fabric layer, a skeleton layer, and a binder layer. The density of the first non-woven fabric layer is 10g / m², the second meltblown fabric layer is 20g / m², the activated carbon fabric layer is 250g / m², each binder layer is 30g / m², and the skeleton layer is 90g / m². The filter material structure has a thickness of 1.2mm and a density of 400mg / m². This filter material has a fast reaction speed, significantly reduces the penetration rate of acidic gases, and effectively absorbs particulate matter from automobile exhaust and industrial gases.

[0005] The above mechanism filters acidic gas through a multi-layer filtering mechanism, and the multiple filter layers are bonded together by adhesive layers. When the wear degrees of the filter layers are different, it is inconvenient to disassemble and replace the different filter layers separately, which affects the subsequent acidic gas filtering effect. Utility Model Content

[0006] The purpose of the present invention is to provide a composite filter material with strong adsorption capacity for acidic gases, so as to solve the problem in the background art mentioned above that when the wear degrees between the filter layers are different, it is inconvenient to disassemble and replace different filter layers separately, which affects the subsequent acidic gas filtration effect.

[0007] To achieve the above object, the utility model provides the following technical solution: a composite filter material with strong adsorption capacity for acidic gas, comprising a filter material protective layer, wherein the top and bottom ends of the filter material protective layer are both sleeved with a signal amplifier body;

[0008] A humidifying filter is provided inside the filter material protection layer, and a composite filter material mechanism for filtering gas is provided on the inner and outer sides of the humidifying filter. The composite filter material mechanism includes a pre-filter layer, and the pre-filter layer is snap-connected to the inner side of the filter material protection layer. The inner side of the pre-filter layer is snap-connected to a HEPA filter layer, and the inner side of the humidifying filter is snap-connected to an activated carbon filter layer.

[0009] Both sides of the top of the humidifying filter are fixedly connected with clamping blocks, and the top of the clamping blocks is provided with a disassembly mechanism for disassembling the humidifying filter.

[0010] Furthermore, the outer side of the pre-filter layer is in contact with the inner side of the filter material protection layer, and the inner side of the HEPA filter layer is in contact with the outer side of the humidification filter.

[0011] Furthermore, the disassembly and assembly mechanism includes a card slot, and the card slot is opened on the inner side of the top of the filter material protective layer, the card slot and the card block are adapted to each other, the top of the card block is fixedly connected to the second connecting block, and the top of the card slot is fixedly connected to the first connecting block.

[0012] Furthermore, the inner side of the top of the filter material protective layer is rotatably connected to a limiting block, and both ends of the limiting block are wound with torsion springs, and the limiting block is snap-connected to the tops of the first connecting block and the second connecting block.

[0013] Furthermore, a movable plate is slidably connected to the right side of the top of the clamping block, and a second fixed block is provided on the left side of the movable plate. A first fixed block matching the second fixed block is provided on the right side of the limiting block.

[0014] Furthermore, a connecting spring is fixedly connected to the right side of the movable plate, and the right side of the connecting spring is connected to the clamping block through the mounting block.

[0015] Furthermore, the cross section of the limiting block is in a "C" shape, and the width of the inner side of the limiting block is greater than the width of the first connecting block and the second connecting block.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Through unique reactivation technology, activated carbon is reactivated through a special process on the basis of activated carbon, which increases the alkaline groups on the surface of activated carbon and reduces the acidic groups on the surface of activated carbon, thereby improving the adsorption efficiency of activated carbon for acidic gases;

[0018] Furthermore, proprietary modification technology modifies the alkaline groups on the surface of secondary activated carbon using a special modifier, further improving the adsorption efficiency and capacity of acidic gases.

[0019] Furthermore, the outermost pre-filter layer can capture large particles, the HEPA filter layer can effectively capture tiny particles in the air, and the humidification filter can assist in the adsorption of dust particles, thereby increasing the overall efficiency of dust treatment. The activated carbon filter layer can then adsorb remaining odors and volatile gases.

[0020] 2. When installing multiple layers of filter media, install the different filter layers in order inside the filter media protective layer. Then adjust the angle of the humidifying filter so that the clamping block can engage with the clamping slot. The positions of the first and second connecting blocks are aligned with each other, thereby basically limiting the position of the humidifying filter.

[0021] Furthermore, by engaging the first fixed block and the second fixed block with each other, the angle of the limit block is limited, and the first connecting block and the second connecting block cannot be separated. When disassembling, the movable plate is pushed to one side, the connecting spring is stressed and shortened in length, thereby separating the first fixed block and the second fixed block, and then the limit block loses its limit and automatically resets by the elastic force of the torsion spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the explosion structure of the composite filter layer mechanism of the utility model;

[0025] Figure 4 This is a structural diagram of the disassembly and assembly mechanism of the utility model;

[0026] Figure 5 This is a schematic diagram of the explosion structure of the disassembly and assembly mechanism of the utility model;

[0027] Figure 6 It is a side sectional structural schematic diagram of the utility model.

[0028] In the figure: 1. Filter material protective layer; 2. Humidification filter; 3. Signal amplifier body; 4. Activated carbon filter layer; 5. Pre-filter layer; 6. HEPA filter layer; 7. Card block; 8. Card slot; 9. First connecting block; 10. Second connecting block; 11. Limit block; 12. Torsion spring; 13. First fixed block; 14. Movable plate; 15. Second fixed block; 16. Connecting spring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1:

[0031] like Figure 1-Figure 3 and Figure 6 The technical solution shown is to solve the problem that when removing acidic gases through adsorption, the original activated carbon will result in low adsorption efficiency and the activated carbon's small adsorption capacity for acidic gases: the composite filter material with strong adsorption capacity for acidic gases discloses an activated carbon filter layer 4, including a filter material protective layer 1, the top and bottom ends of the outside of the filter material protective layer 1 are both provided with a signal amplifier body 3, and the inside of the filter material protective layer 1 is provided with a humidifying filter 2.

[0032] In this case, a special process is used to perform secondary activation on the activated carbon, thereby increasing the alkaline groups on the surface of the activated carbon and reducing the acidic groups on the surface of the activated carbon. This improves the adsorption efficiency of the activated carbon for acidic gases, increases the working efficiency of the composite filter material in adsorbing acidic gases, and modifies the alkaline groups on the surface of the activated carbon to further improve the adsorption efficiency and adsorption capacity of acidic gases.

[0033] Example 2:

[0034] like Figure 1-Figure 3 and Figure 6The technical solution shown is to solve the problem of incomplete acid gas filtration and poor air quality: the composite filter material with strong adsorption capacity for acidic gases discloses a composite filter layer mechanism, and the inner and outer sides of the humidifying filter 2 are provided with composite filter material mechanisms for filtering the gas. The composite filter material mechanism includes a pre-filter layer 5, and the pre-filter layer 5 is snap-connected to the inner side of the filter material protective layer 1, the inner side of the pre-filter layer 5 is snap-connected to the HEPA filter layer 6, and the inner side of the humidifying filter 2 is snap-connected to the activated carbon filter layer 4, the outer side of the pre-filter layer 5 is in contact with the inner side of the filter material protective layer 1, and the inner side of the HEPA filter layer 6 is in contact with the outer side of the humidifying filter 2.

[0035] In this example, when filtering the gas, the outermost pre-filter layer 5 can capture large particles such as dust, hair and pet dander, preventing these large particles from entering the finer filter layers. After the initial filtration, the gas enters the HEPA filter layer 6. The HEPA filter layer 6 can effectively capture tiny particles in the air and can usually remove more than 99.97% of particles larger than 0.3 microns. The humidification filter 2 can assist in the adsorption of dust particles, thereby increasing the overall work efficiency during dust treatment. The activated carbon filter layer 4 can remove harmful gases and odors, such as volatile organic compounds, smoke and kitchen odors, and purify the air by adsorbing these harmful substances.

[0036] Example 3:

[0037] like Figure 1 、 Figure 4 and Figure 5The technical solution shown is to solve the problem that when the wear degrees between the filter layers are different, it is inconvenient to disassemble and replace different filter layers separately, which affects the subsequent acid gas filtering effect: the composite filter material with strong adsorption capacity for acid gas discloses a disassembly and assembly mechanism, both sides of the top of the humidifying filter 2 are fixedly connected with a card block 7, and the top of the card block 7 is provided with a disassembly and assembly mechanism for disassembling the humidifying filter 2, the disassembly and assembly mechanism includes a card slot 8, and the card slot 8 is opened on the inner side of the top of the filter material protective layer 1, the card slot 8 and the card block 7 are adapted to each other, the top of the card block 7 is fixedly connected with a second connecting block 10, and the top of the card slot 8 is fixedly connected with a first connecting block 9, the top of the filter material protective layer 1 The inner side of the end is rotatably connected to the limit block 11, and both ends of the limit block 11 are wrapped with a torsion spring 12. The limit block 11 is snap-connected to the top of the first connecting block 9 and the second connecting block 10. The right side of the top of the card block 7 is slidably connected to a movable plate 14, and a second fixed block 15 is provided on the left side of the movable plate 14. A first fixed block 13 matching the second fixed block 15 is provided on the right side of the limit block 11. The right side of the movable plate 14 is fixedly connected to a connecting spring 16, and the right side of the connecting spring 16 is connected to the card block 7 through the mounting block. The cross section of the limit block 11 is "C"-shaped, and the width of the inner side of the limit block 11 is greater than the width of the first connecting block 9 and the second connecting block 10.

[0038] In this example, when installing the multi-layer filter material, the different filter layers are installed in sequence inside the filter material protective layer 1. Then, the angle of the humidifying filter 2 is adjusted so that the clamping block 7 can be engaged with the clamping groove 8. The positions of the first connecting block 9 and the second connecting block 10 are aligned with each other, thereby basically restricting the position of the humidifying filter 2.

[0039] Rotate the limit block 11 and use the elastic force of the torsion spring 12 to flexibly adjust the angle of the limit block 11. The limit block 11 is sleeved on the outside of the first connecting block 9 and the second connecting block 10. At the same time, the second fixed block 15 on one side of the movable plate 14 engages with the first fixed block 13 on one side of the limit block 11, so that the angle of the limit block 11 is limited, and further makes it impossible to separate the first connecting block 9 and the second connecting block 10. When disassembling, by shifting the movable plate 14 to one side, the connecting spring 16 is stressed and shortened in length, thereby separating the first fixed block 13 from the second fixed block 15, and then the limit block 11 loses its limit and automatically resets by the elastic force of the torsion spring 12.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite filter material with strong adsorption capacity for acidic gases, comprising a filter material protective layer (1), wherein the top and bottom ends of the filter material protective layer (1) are both sleeved with a signal amplifier body (3); Its characteristics are: A humidifying filter (2) is provided inside the filter material protection layer (1), and a composite filter material mechanism for filtering gas is provided on both the inner and outer sides of the humidifying filter (2), the composite filter material mechanism comprising a pre-filter layer (5), and the pre-filter layer (5) is snap-connected to the inner side of the filter material protection layer (1), the inner side of the pre-filter layer (5) is snap-connected to a HEPA filter layer (6), and the inner side of the humidifying filter (2) is snap-connected to an activated carbon filter layer (4); Both sides of the top of the humidifying filter (2) are fixedly connected with a clamping block (7), and the top of the clamping block (7) is provided with a disassembly mechanism for disassembling the humidifying filter (2).

2. The composite filter material with strong adsorption capacity for acidic gases according to claim 1, characterized in that: The outer side of the pre-filter layer (5) is in contact with the inner side of the filter material protection layer (1), and the inner side of the HEPA filter layer (6) is in contact with the outer side of the humidification filter (2).

3. The composite filter material with strong adsorption capacity for acidic gases according to claim 1, characterized in that: The disassembly and assembly mechanism comprises a card slot (8), and the card slot (8) is opened on the inner side of the top end of the filter material protective layer (1), the card slot (8) and the card block (7) are adapted to each other, the top end of the card block (7) is fixedly connected to the second connecting block (10), and the top end of the card slot (8) is fixedly connected to the first connecting block (9).

4. The composite filter material with strong adsorption capacity for acidic gas according to claim 3, characterized in that: The inner side of the top of the filter material protective layer (1) is rotatably connected to a limiting block (11), and both ends of the limiting block (11) are wound with torsion springs (12), and the limiting block (11) is snap-connected to the tops of the first connecting block (9) and the second connecting block (10).

5. The composite filter material with strong adsorption capacity for acidic gas according to claim 4, characterized in that: The right side of the top of the clamping block (7) is slidably connected to a movable plate (14), and a second fixed block (15) is provided on the left side of the movable plate (14); and a first fixed block (13) matching the second fixed block (15) is provided on the right side of the limiting block (11).

6. The composite filter material with strong adsorption capacity for acidic gas according to claim 5, characterized in that: The right side of the movable plate (14) is fixedly connected with a connecting spring (16), and the right side of the connecting spring (16) is connected to the clamping block (7) through a mounting block.

7. The composite filter material with strong adsorption capacity for acidic gases according to claim 6, characterized in that: The cross section of the limiting block (11) is in a "C" shape, and the width of the inner side of the limiting block (11) is greater than the widths of the first connecting block (9) and the second connecting block (10).

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