Degradable filter cotton for air purification

Abstract

The utility model relates to a kind of degradable filter cotton for air purification, including filter cotton body, the filter cotton body is sequentially first filter layer, second filter layer and third filter layer from top to bottom, the first filter layer is degradable bamboo fibre layer, the second filter layer is degradable polylactic acid fibre layer, the third filter layer is degradable wood pulp fibre layer, and the first filter layer, second filter layer and third filter layer between all adopt step-by-step encryption structure, and are prepared by hot air forming technology.The utility model is by using bamboo fibre, polylactic acid fibre and wood pulp fibre as filter layer, compared with traditional non-degradable filter cotton, can be naturally decomposed after being discarded, reduce environmental pollution, meet environmental protection concept, solve the mainstream filter cotton in market after use cycle end, difficult to degrade in natural environment, not only occupy a large amount of land resources, but also release harmful substances pollute soil and water source, cause long-term damage to ecological system problem.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, and in particular to a biodegradable filter cotton for air purification. Background Technology

[0002] As an important tool for improving indoor and outdoor air quality, the environmental performance of the core component of air purification equipment, the filter cotton, has received widespread attention.

[0003] Currently, most mainstream filter cotton on the market uses non-degradable synthetic materials such as polyester fiber and polypropylene fiber. After the service life ends, it is difficult to degrade in the natural environment. These wastes accumulate in landfills or flow into the natural environment, not only occupying a lot of land resources, but also releasing harmful substances that pollute the soil and water sources, causing long-term damage to the ecosystem. Utility Model Content

[0004] In view of the technical problem that most of the mainstream filter cotton on the market in the existing technology is made of non-degradable synthetic materials such as polyester fiber and polypropylene fiber, which are difficult to degrade in the natural environment after the service life. These wastes accumulate in landfills or flow into the natural environment, which not only occupy a lot of land resources, but also release harmful substances to pollute the soil and water sources, causing long-term damage to the ecosystem. This utility model provides a biodegradable filter cotton for air purification.

[0005] The technical solution adopted in this utility model is as follows: a biodegradable filter cotton for air purification, comprising a filter cotton body, wherein the filter cotton body consists of a first filter layer, a second filter layer, and a third filter layer from top to bottom. The first filter layer is a biodegradable bamboo fiber layer, the second filter layer is a biodegradable polylactic acid fiber layer, and the third filter layer is a biodegradable wood pulp fiber layer. The first, second, and third filter layers all employ a progressively denser structure and are prepared using hot air molding technology. The bamboo fiber layer can intercept larger particulate pollutants, the polylactic acid fiber layer mainly serves as structural support, forming a stable fiber framework, and the wood pulp fiber layer performs fine filtration. This layered filtration design achieves highly efficient filtration from coarse to fine, improving the removal capacity of pollutants and harmful gases of different particle sizes in the air. Simultaneously, each layer uses biodegradable materials, which, compared to traditional non-biodegradable filter cotton, can naturally decompose after disposal, reducing environmental pollution and conforming to environmental protection principles. The hot air molding technology ensures the stability and integrity of the filter cotton structure, giving it good physical properties and extending its service life.

[0006] Furthermore, activated carbon particles are added to the second filter layer, and the mass ratio of polylactic acid fiber to activated carbon particles in the second filter layer is 7:1. The particle size of the activated carbon particles is 0.1-0.5 mm. Activated carbon has a rich pore structure and strong adsorption capacity, which can effectively adsorb harmful gases such as formaldehyde and benzene, as well as odors in the air. The reasonable mass ratio and particle size range ensure that the activated carbon is evenly distributed in the polylactic acid fiber layer, which not only ensures the adsorption effect, but also does not affect the structural strength and filtration performance of the polylactic acid fiber layer due to the addition of too much activated carbon, thus further improving the purification capacity of the filter cotton for harmful gases and fine particles.

[0007] Furthermore, the thickness of the second filter layer is greater than that of the first and third filter layers. Since the second filter layer undertakes the important task of adsorbing harmful gases and filtering smaller particles, increasing its thickness can accommodate more activated carbon particles and polylactic acid fibers, providing a larger contact area and space for the adsorption and filtration process, thereby enhancing the removal effect of harmful gases and fine particles and significantly improving the overall purification efficiency of the filter cotton.

[0008] Furthermore, the filter cotton body is equipped with an edge banding strip made of biodegradable corn starch-based material. The edge banding strip can effectively protect the edge of the filter cotton body, preventing the edge from becoming loose or damaged during use, thus improving the durability of the filter cotton. At the same time, the biodegradable corn starch-based material ensures that the edge banding strip can decompose naturally after disposal, further enhancing the overall environmental protection properties of the filter cotton and avoiding additional waste pollution.

[0009] Furthermore, a positioning mark is provided on one side surface of the edge strip. The positioning mark can clearly indicate the airflow direction, ensuring that the user installs the filter cotton correctly, so that the air passes through each filter layer in the designed order, giving full play to the filtration function of each layer, avoiding the decline in filtration effect due to incorrect installation, and ensuring the stability and effectiveness of air purification.

[0010] Furthermore, both the upper and lower surfaces of the filter cotton body are coated with an antibacterial coating. The thickness of the antibacterial coating is 0.01-0.05 mm. The antibacterial coating is composed of chitosan and silver ions. Both chitosan and silver ions have good antibacterial properties. The combination of the two can effectively inhibit the growth and reproduction of bacteria, mold and other microorganisms on the surface of the filter cotton, prevent problems such as mold growth and odor caused by microbial growth, and extend the service life of the filter cotton. At the same time, the antibacterial coating does not affect the air filtration performance of the filter cotton, thus improving the hygiene and safety of the filter cotton while ensuring the air purification effect.

[0011] The beneficial effects of this utility model are:

[0012] This invention uses bamboo fiber, polylactic acid fiber, and wood pulp fiber as the filter layer. Compared with traditional non-degradable filter cotton, it can decompose naturally after disposal, reducing environmental pollution and conforming to the concept of environmental protection. It solves the technical problem that most mainstream filter cotton on the market uses non-degradable synthetic materials such as polyester fiber and polypropylene fiber, which are difficult to degrade in the natural environment after the service life ends. These wastes accumulate in landfills or flow into the natural environment, which not only occupy a lot of land resources, but also release harmful substances to pollute the soil and water sources, causing long-term damage to the ecosystem.

[0013] Secondly, the edge banding strip effectively protects the edges of the filter cotton body, preventing them from becoming loose or damaged during use, thus improving the durability of the filter cotton. The antibacterial coating effectively inhibits the growth and reproduction of bacteria, mold, and other microorganisms on the surface of the filter cotton, preventing it from becoming moldy and producing odors. While ensuring the air purification effect, this invention also improves the hygiene and safety of the filter cotton. Attached Figure Description

[0014] Figure 1 This is an overall drawing of the present invention;

[0015] Figure 2 This is an exploded view of the filter cotton body of this utility model;

[0016] Figure 3 This is a front sectional view of the present invention.

[0017] The markings in the diagram are as follows: 1. Filter cotton body; 101. First filter layer; 102. Second filter layer; 103. Third filter layer; 2. Edge binding strip; 201. Positioning mark; 3. Antibacterial coating. Detailed Implementation

[0018] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The following is in conjunction with the appendix Figures 1-3 The present invention will be further described below.

[0021] In order to solve the problems existing in the background technology, this application proposes the following technical solution: a biodegradable filter cotton for air purification.

[0022] The specific technical solution includes a filter cotton body 1, which consists of a first filter layer 101, a second filter layer 102, and a third filter layer 103 from top to bottom. The first filter layer 101 is a biodegradable bamboo fiber layer, the second filter layer 102 is a biodegradable polylactic acid fiber layer, and the third filter layer 103 is a biodegradable wood pulp fiber layer. The first filter layer 101, the second filter layer 102, and the third filter layer 103 all employ a progressively denser structure. Prepared using hot air molding technology, the bamboo fiber possesses good toughness and a certain porosity, enabling it to intercept larger particles in the air. The polylactic acid fiber layer mainly serves as a structural support, forming a stable fiber framework. The wood pulp fiber layer has a fine fiber structure, which can finely filter the air after the first two layers of filtration, removing residual tiny particles. From the first filter layer 101 to the third filter layer 103, the fiber arrangement density gradually increases and the pores gradually decrease, so as to achieve an orderly process from coarse filtration to fine filtration. At the same time, it is prepared by hot air molding technology. At a temperature of 120-160℃, hot air is applied for 5-10 minutes to make the fibers of each layer tightly bonded, ensuring the structural stability and integrity of the filter cotton body 1.

[0023] Reference Figures 1 to 3 As shown, activated carbon particles are added to the second filter layer 102, and the mass ratio of polylactic acid fiber to activated carbon particles in the second filter layer 102 is 7:1. The particle size of the activated carbon particles is 0.1-0.5 mm. The thickness of the second filter layer 102 is greater than that of the first filter layer 101 and the third filter layer 103. Activated carbon particles, with their abundant pores and strong adsorption capacity, can effectively adsorb harmful gases such as formaldehyde and benzene, as well as odors in the air. The thickness of the second filter layer 102 is greater than that of the first filter layer 101 and the third filter layer 103. This thickness design provides a larger contact area and containment space for the adsorption and filtration process, further enhancing the removal effect of harmful gases and fine particles.

[0024] Reference Figures 1 to 3As shown, the filter cotton body 1 has an edge banding strip 2 installed on its edge. The edge banding strip 2 is made of biodegradable corn starch-based material. A positioning mark 201 is set on one side surface of the edge banding strip 2. Both the upper and lower surfaces of the filter cotton body 1 are coated with an antibacterial coating 3. The thickness of the antibacterial coating 3 is 0.01-0.05 mm. The antibacterial coating 3 is composed of chitosan and silver ions. The edge banding strip 2 protects the edge of the filter cotton body 1, preventing it from becoming loose or damaged during use, while ensuring the overall biodegradability of the filter cotton. The positioning mark 201 is used to indicate the airflow direction, ensuring that the user correctly installs the filter cotton body 1 in the air purification equipment, so that the air passes through each filter layer in the designed order, giving full play to the filtration function of each layer. The antibacterial coating 3 can effectively inhibit the growth and reproduction of bacteria, mold and other microorganisms on the surface of the filter cotton, preventing the filter cotton from becoming moldy and producing odors. While ensuring the air purification effect, it improves the hygiene and safety of the filter cotton.

[0025] To ensure that those skilled in the art can fully understand the technical solution, this application provides the following overall overview:

[0026] In use, the filter cotton body 1 is correctly installed in the air purifier according to the positioning mark 201. The air first passes through the first filter layer 101, which uses the good toughness and porous structure of bamboo fiber to intercept and remove larger particles of pollutants in the air. Next, the air enters the second filter layer 102, which contains activated carbon particles. The activated carbon particles use their abundant pores and strong adsorption capacity to effectively adsorb harmful gases such as formaldehyde and benzene, as well as odors in the air. At the same time, polylactic acid fiber provides structural support to ensure the stability of the filter cotton. Finally, the air passes through the third filter layer 103. This layer has a fine fiber structure and can finely filter the air after the first two layers, removing residual small particles.

[0027] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A biodegradable filter cotton for air purification, characterized in that, The filter cotton body (1) consists of a first filter layer (101), a second filter layer (102), and a third filter layer (103) from top to bottom. The first filter layer (101) is a biodegradable bamboo fiber layer, the second filter layer (102) is a biodegradable polylactic acid fiber layer, and the third filter layer (103) is a biodegradable wood pulp fiber layer. The first filter layer (101), the second filter layer (102), and the third filter layer (103) all adopt a progressively denser structure and are prepared by hot air molding technology.

2. The biodegradable filter cotton for air purification according to claim 1, characterized in that, The second filter layer (102) contains activated carbon particles, and the mass ratio of polylactic acid fiber to activated carbon particles in the second filter layer (102) is 7:1, and the particle size of the activated carbon particles is 0.1-0.5 mm.

3. The biodegradable filter cotton for air purification according to claim 1, characterized in that, The thickness of the second filter layer (102) is greater than the thickness of the first filter layer (101) and the third filter layer (103).

4. The biodegradable filter cotton for air purification according to claim 1, characterized in that, The filter cotton body (1) is fitted with an edge banding strip (2) which is made of a biodegradable corn starch-based material.

5. The biodegradable filter cotton for air purification according to claim 4, characterized in that, The edge banding strip (2) has a positioning mark (201) on one side surface.

6. The biodegradable filter cotton for air purification according to claim 1, characterized in that, The upper and lower surfaces of the filter cotton body (1) are coated with an antibacterial coating (3), and the thickness of the antibacterial coating (3) is 0.01-0.05 mm.

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