Porous adsorption-catalytic oxidation composite formaldehyde purification filter element

Abstract

This utility model discloses a porous adsorption-catalytic oxidation composite formaldehyde purification filter element. This utility model relates to the field of air purification equipment technology. The utility model includes: a frame, with a dustproof device slidably connected to the inner wall of the frame. The dustproof device can be disassembled by sliding. Through the cooperation of the dustproof device and the filter device, the dustproof device achieves tool-free quick disassembly via a sliding rod and an L-shaped groove, and a V-shaped buckle and a guiding connection to the inner wall of the frame. The filter device adopts a multi-layer structure of a primary filter, an activated carbon filter, and a terminal filter, forming a gradient purification mechanism. The large pores of the primary filter can quickly trap large particulate pollutants such as hair and dust, reducing the load on subsequent filters. The trapezoidal pores of the activated carbon filter, combined with its high specific surface area, achieve efficient adsorption of formaldehyde. The small pores of the terminal filter further intercept tiny particles and provide a catalytic oxidation reaction site. Multi-stage filtration improves the formaldehyde purification efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air purification equipment technology, specifically to a porous adsorption-catalytic oxidation composite formaldehyde purification filter element. Background Technology

[0002] Formaldehyde is a major harmful substance in indoor air pollution, and long-term exposure can cause serious damage to the human respiratory and immune systems.

[0003] Traditional single-adsorption filter cartridges mostly use activated carbon as the main material. Although they can quickly adsorb formaldehyde, they have two major problems: First, activated carbon is easily clogged by dust and other particulate matter, resulting in a significant decrease in adsorption efficiency. Second, when activated carbon becomes saturated, it not only loses its purification ability but may also release the adsorbed formaldehyde in high-temperature and high-humidity environments, causing secondary pollution. While single-catalytic filter cartridges can decompose formaldehyde into harmless substances, their catalytic reaction depends on high concentrations of formaldehyde. If there is a large amount of dust in the air, it can easily cover the catalytic active sites, leading to a decrease in catalytic efficiency. Moreover, existing catalytic filter cartridges have complex structures, are inconvenient to install and disassemble, and have high maintenance costs. In addition, in the existing filter cartridge design, the lack of effective positioning and airflow guidance structures between multiple filter layers can easily lead to filter misalignment, resulting in purification blind spots, or air not being able to penetrate each filter layer evenly, reducing purification efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a porous adsorption-catalytic oxidation composite formaldehyde purification filter element, which solves the problems of easy clogging, low efficiency, easy secondary pollution, unstable structure, and inconvenient maintenance of single filter elements.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model employs the following technical solution: a porous adsorption-catalytic oxidation composite formaldehyde purification filter element, comprising: a frame, a dustproof device slidably connected to the inner wall of the frame, the dustproof device being detachable by sliding, a filter device slidably connected to the inner wall of the frame, the filter device purifying formaldehyde using a multi-layered, porous structure, the dustproof device including a grille, a V-shaped buckle fixedly connected to the top of the grille, sliding rods symmetrically fixedly connected to the outer wall of the grille, and an L-shaped groove slidably connected to the outer wall of the sliding rods, the inner wall of the frame slidingly connected to the outer wall of the filter device, and the dustproof device achieving tool-free quick disassembly through the sliding engagement of the sliding rods and the L-shaped grooves, and the guiding connection between the V-shaped buckle and the inner wall of the frame. This design not only facilitates users in regularly cleaning the dust particles intercepted by the grille, but also provides initial dust interception.

[0008] Preferably, the outer wall of the V-shaped buckle is slidably connected to the inner wall of the frame, and the L-shaped groove is formed on the inner wall of the frame.

[0009] Preferably, the filtration device includes a primary filter screen with large holes on its inner wall. The large holes are arranged in a linear array along the inner wall of the primary filter screen. The large holes of the primary filter screen can quickly trap large particulate pollutants such as hair and dust, reducing the load on subsequent filters.

[0010] Preferably, the outer wall of the primary filter screen is provided with an activated carbon filter screen, and the inner wall of the activated carbon filter screen is provided with trapezoidal holes, with the end of the trapezoidal hole with the larger diameter facing the primary filter screen. The trapezoidal holes of the activated carbon filter screen, combined with its high specific surface area, achieve efficient adsorption of formaldehyde.

[0011] Preferably, the activated carbon filter is provided with a terminal filter at the end away from the primary filter. The inner wall of the terminal filter has small holes, which further intercept tiny particles and provide a site for catalytic oxidation reaction. Multi-stage filtration improves the formaldehyde purification efficiency.

[0012] Preferably, the outer walls of the initial filter, activated carbon filter, and final filter are all in contact with positioning rods, and the outer walls of the positioning rods are fixedly connected to the outer walls of the activated carbon, ensuring that the gas penetrates each filter layer uniformly and achieves a stable and efficient formaldehyde purification effect.

[0013] Beneficial effects

[0014] This invention provides a porous adsorption-catalytic oxidation composite formaldehyde purification filter element. It possesses the following characteristics:

[0015] Beneficial effects:

[0016] This utility model, through the combination of a dustproof device and a filter device, achieves tool-free quick disassembly by means of a sliding engagement between a sliding rod and an L-shaped groove, and a guiding connection between a V-shaped buckle and the inner wall of the frame. The filter device adopts a multi-layer structure of a primary filter, an activated carbon filter, and a terminal filter, forming a gradient purification mechanism. The large pores of the primary filter can quickly trap large particulate pollutants such as hair and dust, reducing the load on subsequent filters. The trapezoidal pores of the activated carbon filter, combined with its high specific surface area, achieve efficient adsorption of formaldehyde. The small pores of the terminal filter further intercept tiny particles and provide a catalytic oxidation reaction site. Multi-stage filtration improves the formaldehyde purification efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3This utility model Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0021] Figure 5 This utility model Figure 2 Enlarged structural diagram at point C;

[0022] Figure 6 This is a schematic diagram of the structure of the filtration device of this utility model.

[0023] In the diagram: 1. Frame; 2. Dustproof device; 20. Grille; 21. V-shaped buckle; 22. Slide rod; 23. L-shaped slide groove; 3. Filter device; 30. Initial filter screen; 31. Large hole; 32. Activated carbon filter screen; 33. Trapezoidal hole; 34. End filter screen; 35. Small hole; 36. Positioning rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] Please see Figure 1-6 This utility model provides a technical solution: a porous adsorption-catalytic oxidation composite formaldehyde purification filter element, comprising:

[0027] The frame 1 has a dustproof device 2 that is slidably connected to its inner wall. The dustproof device 2 can be disassembled by sliding. The inner wall of the frame 1 has a filter device 3 that is slidably connected to its inner wall. The filter device 3 uses a multi-layer and porous structure to purify formaldehyde. The air is initially blocked by the dustproof device to prevent large dust particles from entering the frame. As air is continuously drawn in, the filter device purifies the air.

[0028] The dustproof device 2 includes a grille 20, with a V-shaped buckle 21 fixedly connected to the top of the grille 20. A sliding rod 22 is symmetrically fixedly connected to the outer wall of the grille 20, and an L-shaped groove 23 is slidably connected to the outer wall of the sliding rod 22. The inner wall of the frame 1 is slidably connected to the outer wall of the filter device 3, and the outer wall of the V-shaped buckle 21 is slidably connected to the inner wall of the frame 1. The L-shaped groove 23 is opened on the inner wall of the frame 1. When formaldehyde-containing air enters the frame, the grille in the dustproof device intercepts large particulate pollutants such as dust and hair, preventing them from entering the filter device. The sliding guide structure formed by the V-shaped buckle and the L-shaped groove ensures that the dustproof device is stably installed while facilitating disassembly and cleaning, maintaining the interception efficiency.

[0029] The filtration device 3 includes a primary filter 30, with large holes 31 on the inner wall of the primary filter 30. The large holes 31 are arranged in a linear array along the inner wall of the primary filter 30. An activated carbon filter 32 is provided on the outer wall of the primary filter 30. The activated carbon filter 32 has trapezoidal holes 33 on its inner wall, with the larger end of the trapezoidal holes 33 facing the primary filter 30. A terminal filter 34 is provided at the end of the activated carbon filter 32 away from the primary filter 30, with small holes 35 on its inner wall. Subsequently, the air is deeply purified by the filtration device. The large holes of the primary filter further remove residual large particles and reduce the load on the activated carbon filter. When the air enters the activated carbon filter, the larger end of the trapezoidal hole faces the primary filter, which facilitates the rapid flow of air, while the smaller end enhances the adsorption effect. The high specific surface area of ​​the activated carbon is used to adsorb formaldehyde molecules. Finally, the small holes of the terminal filter provide a catalytic oxidation site, so that the residual formaldehyde is catalytically decomposed into harmless substances.

[0030] The outer walls of the primary filter 30, activated carbon filter 32, and terminal filter 34 are all in contact with positioning rods 36, and the outer walls of the positioning rods 36 are fixedly connected to the outer walls of the activated carbon. The positioning rods reserve airflow space between the filters, guide the airflow to be discharged in a staggered manner between the filters, avoid air short-circuiting, and ensure that each layer of filter fully contacts the air to achieve efficient formaldehyde purification. Throughout the process, the dustproof device and the filtration device work closely together, and the gradient purification and positioning structure of the multi-layer filter ensures stable and efficient operation of the filter element.

[0031] During use, the air is initially blocked by the dustproof device to prevent large dust particles from entering the frame. As air is continuously drawn in, the filter device purifies the air.

[0032] First, when formaldehyde-containing air enters the frame, the grille in the dustproof device intercepts large particulate pollutants such as dust and hair, preventing them from entering the filter. The sliding guide structure formed by the V-shaped buckle and L-shaped groove ensures that the dustproof device is securely installed while facilitating disassembly and cleaning, maintaining interception efficiency.

[0033] Subsequently, the air undergoes deep purification through a filtration device. The large pores of the primary filter further remove residual large particles, reducing the load on the activated carbon filter. When air enters the activated carbon filter, the larger end of the trapezoidal pores faces the primary filter, facilitating rapid airflow, while the smaller end enhances the adsorption effect, utilizing the high specific surface area of ​​activated carbon to adsorb formaldehyde molecules. Finally, the small pores of the end filter provide a catalytic oxidation site, causing residual formaldehyde to be catalytically decomposed into harmless substances.

[0034] The positioning rod leaves airflow space between the filters, guiding the airflow to be discharged in a staggered manner between the filters to avoid air short-circuiting and ensure that each layer of filter is in full contact with the air, achieving efficient formaldehyde purification. Throughout the process, the dustproof device and the filtration device work closely together, and the gradient purification and positioning structure of the multi-layer filter ensures stable and efficient operation of the filter element.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0036] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A porous adsorption-catalytic oxidation composite formaldehyde purification filter element, comprising: The frame (1) is characterized by: The inner wall of the frame (1) is slidably connected to a dustproof device (2), which can be disassembled by sliding. The inner wall of the frame (1) is slidably connected to a filter device (3), which uses a multi-layer porous structure to purify formaldehyde. The dustproof device (2) includes a grille (20), a V-shaped buckle (21) is fixedly connected to the top of the grille (20), a slide rod (22) is symmetrically fixedly connected to the outer wall of the grille (20), an L-shaped slide groove (23) is slidably connected to the outer wall of the slide rod (22), and the inner wall of the frame (1) is slidably connected to the outer wall of the filter device (3).

2. The porous adsorption-catalytic oxidation composite type formaldehyde purification filter element according to claim 1, characterized in that: The outer wall of the V-shaped buckle (21) is slidably connected to the inner wall of the frame (1), and the L-shaped groove (23) is opened on the inner wall of the frame (1).

3. The porous adsorption-catalytic oxidation composite type formaldehyde purification filter element according to claim 1, characterized in that: The filter device (3) includes a primary filter screen (30), the inner wall of which is provided with large holes (31), and the inner wall of the large holes (31) is arranged in a linear array along the inner wall of the primary filter screen (30).

4. The porous adsorption-catalytic oxidation composite type formaldehyde purification filter element according to claim 3, characterized in that: The outer wall of the primary filter (30) is provided with an activated carbon filter (32), and the inner wall of the activated carbon filter (32) is provided with trapezoidal holes (33), and the end with the larger diameter of the trapezoidal hole (33) faces the primary filter (30).

5. The porous adsorption-catalytic oxidation composite type formaldehyde purification filter element according to claim 4, characterized in that: The activated carbon filter (32) has an end filter (34) at the end away from the initial filter (30), and the inner wall of the end filter (34) has small holes (35).

6. The porous adsorption-catalytic oxidation composite type formaldehyde purification filter element according to claim 5, characterized in that: The outer walls of the initial filter screen (30), the activated carbon filter screen (32) and the end filter screen (34) are all in contact with positioning rods (36), and the outer walls of the positioning rods (36) are fixedly connected to the outer walls of the activated carbon.

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