Biomimetic affinity capture composite antibacterial membrane filter cloth

Abstract

The utility model belongs to filter cloth technical field, and disclose a kind of bionic affinity capture composite antibacterial membrane filter cloth, including filter cloth body, the filter cloth body is three-layer superimposed integration structure, and from top to bottom successively are the capture layer made of polyvinylidene fluoride fiber, the antibacterial layer made of polyester filament, the substrate support layer made of polypropylene nonwoven fabric, the top of the capture layer is equipped with several capture grooves, several The capture groove is all cylindrical, the antibacterial layer inside is equipped with several antibacterial cavities, the antibacterial cavity is closed cavity structure, and antibacterial cavity is spherical, the utility model is caught by being set to capture layer, and capture groove with adsorption texture is set on its surface, realizes to the efficient directional capture of small particle and biological macromolecule, effectively overcome the shortcoming that traditional filter cloth can only intercept larger particulate matter, and the capture ability of poor solubility pollutant or nanoscale target is poor.

Description

Technical Field

[0001] This utility model belongs to the field of filter cloth technology, specifically a biomimetic affinity-capturing composite antibacterial membrane filter cloth. Background Technology

[0002] In the fields of modern separation, purification, and hygiene protection, the efficient capture of target substances in fluids and the simultaneous improvement of the system's antibacterial performance have become core requirements driving technological innovation. Whether it is the precise interception of impurities in food processing, the enrichment of active ingredients in the biopharmaceutical field, or the targeted removal of pollutants in water treatment, there is an urgent need for novel filter materials that combine affinity recognition capabilities with long-lasting antibacterial properties as technological support.

[0003] Existing ordinary filter cloths typically only have a single physical interception function during use. They are difficult to effectively remove micron / nano-sized pollutants and pathogenic microorganisms from water or air. Furthermore, the surface of the filter cloth is easily covered and bred by bacteria and other microorganisms, causing secondary pollution and affecting the filtration effect and service life.

[0004] Therefore, a biomimetic affinity-capturing composite antibacterial membrane filter cloth is proposed to address the above problems. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a biomimetic affinity-capturing composite antibacterial membrane filter cloth, which effectively overcomes the shortcomings of traditional filter cloths that can only trap larger particles and have poor capture ability for dissolved pollutants or nanoscale targets, and ensures the long-term, slow-release effect of antibacterial components, endowing the filter cloth with continuous and broad-spectrum antibacterial properties, thus expanding its application scenarios.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a biomimetic affinity-capturing composite antibacterial membrane filter cloth, comprising a filter cloth body, wherein the filter cloth body is a three-layer integrated structure, and from top to bottom are a capture layer made of polyvinylidene fluoride fiber, an antibacterial layer made of polyester filament, and a base support layer made of polypropylene nonwoven fabric.

[0007] Preferably, the top of the capture layer has a plurality of capture grooves, and the plurality of capture grooves are all cylindrical.

[0008] Preferably, the thickness of the capture layer is twice the depth of the capture groove, and the inner surface of the capture groove is provided with an adsorption texture.

[0009] Preferably, the antibacterial layer has a plurality of antibacterial cavities inside, the antibacterial cavities are closed cavity structures, and the antibacterial cavities are spherical.

[0010] Preferably, the antibacterial layer has a plurality of annular protrusions fixedly provided at one end facing the base support layer, the annular protrusions being distributed around the edge of the antibacterial cavity, and the base support layer having annular grooves adapted to the annular protrusions.

[0011] Preferably, the annular boss, antibacterial cavity, capturing groove and annular groove are arranged in a one-to-one correspondence in the vertical direction, and the inner diameter of the annular groove is adapted to the outer diameter of the annular boss, and the inner diameter of the annular boss is adapted to the outer diameter of the antibacterial cavity.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model achieves efficient and targeted capture of microparticles and biomolecules by setting a capture layer and opening capture grooves with adsorption texture on its surface, effectively overcoming the shortcomings of traditional filter cloths that can only trap larger particles and have poor capture ability for dissolved pollutants or nanoscale targets.

[0013] 2. This utility model, by setting an antibacterial layer containing a closed antibacterial cavity and tightly fitting it with the base support layer through annular bosses and annular grooves, achieves a stable and integrated structure while ensuring the long-term, slow-release effect of antibacterial components, giving the filter cloth continuous and broad-spectrum antibacterial properties and expanding its application scenarios. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is a schematic cross-sectional view of the antibacterial layer structure of this utility model; Figure 4 This is a schematic diagram of the antibacterial layer structure of this utility model.

[0015] In the diagram: 1. Filter cloth body; 11. Snapping layer; 111. Snapping slot; 12. Antibacterial layer; 121. Antibacterial cavity; 122. Annular boss; 13. Base support layer; 131. Annular groove. Detailed Implementation

[0016] 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.

[0017] like Figures 1 to 4 As shown, this utility model provides a biomimetic affinity-capturing composite antibacterial membrane filter cloth, including a filter cloth body 1. The filter cloth body 1 is a three-layer integrated structure, consisting of a capture layer 11 made of polyvinylidene fluoride fiber, an antibacterial layer 12 made of polyester filament, and a base support layer 13 made of polypropylene nonwoven fabric from top to bottom. By setting the filter cloth body 1 as a three-layer integrated structure of capture layer 11, antibacterial layer 12, and base support layer 13, and each layer being made of polyvinylidene fluoride fiber, polyester filament, and polypropylene nonwoven fabric respectively, the filter cloth body 1 combines the corrosion resistance and adsorption properties of polyvinylidene fluoride fiber, the toughness and antibacterial compatibility of polyester filament, and the high strength support of polypropylene nonwoven fabric. The synergistic effect of the three-layer structure allows the filter cloth to simultaneously possess the core properties of filtration and capture, antibacterial treatment, and structural stability, solving the problems of traditional single-layer filter cloths having limited functions and being easily damaged.

[0018] Specifically, the top of the capture layer 11 has several capture grooves 111, all of which are cylindrical. The inner walls of the cylindrical capture grooves 111 are smooth and without sharp edges, resulting in less resistance when the fluid flows in the grooves and reducing the accumulation of pollutants at the groove openings. At the same time, the uniform distribution of the cylindrical capture grooves 111 maximizes the use of the surface space of the capture layer 11, increases the contact area between pollutants and the capture layer 11, and significantly improves the physical capture efficiency of the filter cloth for pollutants such as particulate matter and colloids.

[0019] like Figures 1 to 4 As shown, the thickness of the capture layer 11 is twice the depth of the capture tank 111, and the inner surface of the capture tank 111 is provided with adsorption texture. The thickness design of the capture layer 11 ensures that the capture tank 111 has enough space to hold dirt, while also allowing the capture layer 11 to retain sufficient structural strength. The adsorption texture in the capture tank 111 increases the specific surface area of ​​the inner wall of the capture tank 111, which can further intercept tiny pollutants through physical adsorption, complementing the physical capture function of the capture tank 111 and improving the filtration accuracy of the capture layer 11.

[0020] Furthermore, the antibacterial layer 12 has several antibacterial cavities 121 inside. The antibacterial cavity 121 is a closed cavity structure and is spherical. The spherical antibacterial cavity 121 has the largest internal volume, which can accommodate more antibacterial media such as antibacterial particles and antibacterial gel, thereby improving the antibacterial durability of the antibacterial layer 12.

[0021] like Figures 1 to 4As shown, the antibacterial layer 12 has several annular protrusions 122 fixedly provided at one end facing the base support layer 13. The annular protrusions 122 are distributed around the edge of the antibacterial cavity 121. The base support layer 13 has annular grooves 131 adapted to the annular protrusions 122. The fitting structure of the annular protrusions 122 and the annular grooves 131 can enhance the connection stability between the antibacterial layer 12 and the base support layer 13, and prevent the two layers from slipping relative to each other under filtration conditions. At the same time, the annular protrusions 122 are distributed around the antibacterial cavity 121, which can form circumferential protection for the antibacterial cavity 121, reduce the deformation of the antibacterial cavity 121 caused by external pressure, and ensure the structural integrity of the antibacterial cavity 121.

[0022] It is worth noting that the annular protrusion 122, antibacterial cavity 121, capture groove 111, and annular groove 131 are arranged in a one-to-one correspondence in the vertical direction. The inner diameter of the annular groove 131 is adapted to the outer diameter of the annular protrusion 122, and the inner diameter of the annular protrusion 122 is adapted to the outer diameter of the antibacterial cavity 121. After the pollutants penetrate from the capture groove 111, they can directly enter the corresponding antibacterial cavity 121 area for antibacterial treatment, and then flow to the base support layer 13 through the gap between the annular protrusion 122 and the annular groove 131, avoiding disorderly diffusion of fluid between layers. At the same time, the size adaptation ensures that the annular protrusion 122 and the annular groove 131 fit tightly, and the distance between the annular protrusion 122 and the antibacterial cavity 121 is reasonable. This not only improves the interlayer sealing, but also prevents the antibacterial cavity 121 from being squeezed due to size deviation, further optimizing the filtration and structural performance of the filter cloth.

[0023] Working principle and process: The filtered fluid first comes into contact with the capture layer 11 of the filter cloth body 1. The particulate matter, colloids and other pollutants in the fluid are physically trapped by the cylindrical capture groove 111 at the top of the capture layer 11. The adsorption texture in the capture groove 111 will further adsorb the tiny pollutants, improving the initial filtration effect. Tiny contaminants that are not completely trapped penetrate into the antibacterial layer 12 with the fluid. Since the antibacterial cavity 121 and the capture tank 111 are vertically aligned, the contaminants will accurately contact the antibacterial cavity 121 in the antibacterial layer 12. The antibacterial medium in the antibacterial cavity 121 releases antibacterial components to kill and inhibit the contaminants. The antibacterial fluid continues to penetrate into the base support layer 13. The annular protrusion 122 on the antibacterial layer 12 is embedded in the annular groove 131 of the base support layer 13, which not only ensures the connection between the antibacterial layer 12 and the base support layer 13, but also provides an orderly flow channel for the fluid. The base support layer 13 provides mechanical support for the entire filter cloth body 1 through its own polypropylene nonwoven fabric structure, preventing the filter cloth from deforming or breaking under filtration pressure, and finally achieving efficient filtration, antibacterial and stable transport of the fluid.

[0024] 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 process, method, article, or apparatus.

[0025] 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 biomimetic affinity-capturing composite antibacterial membrane filter cloth, comprising a filter cloth body (1), characterized in that: The filter cloth body (1) is a three-layer integrated structure, and from top to bottom it consists of a capture layer (11) made of polyvinylidene fluoride fiber, an antibacterial layer (12) made of polyester filament, and a base support layer (13) made of polypropylene nonwoven fabric.

2. The biomimetic affinity-capturing composite antibacterial membrane filter cloth according to claim 1, characterized in that: The top of the capture layer (11) is provided with a plurality of capture grooves (111), and the plurality of capture grooves (111) are all cylindrical.

3. The biomimetic affinity-capturing composite antibacterial membrane filter cloth according to claim 2, characterized in that: The thickness of the capture layer (11) is twice the depth of the capture groove (111), and the inner surface of the capture groove (111) is provided with an adsorption texture.

4. The biomimetic affinity-capturing composite antibacterial membrane filter cloth according to claim 3, characterized in that: The antibacterial layer (12) has several antibacterial cavities (121) inside. The antibacterial cavity (121) is a closed cavity structure and is spherical.

5. The biomimetic affinity-capturing composite antibacterial membrane filter cloth according to claim 4, characterized in that: The antibacterial layer (12) has a plurality of annular protrusions (122) fixedly provided at one end facing the base support layer (13). The annular protrusions (122) are distributed around the edge of the antibacterial cavity (121). The base support layer (13) has an annular groove (131) adapted to the annular protrusions (122).

6. The biomimetic affinity-capturing composite antibacterial membrane filter cloth according to claim 5, characterized in that: The annular boss (122), antibacterial cavity (121), capture groove (111) and annular groove (131) are arranged in a one-to-one correspondence in the vertical direction, and the inner diameter of the annular groove (131) is adapted to the outer diameter of the annular boss (122), and the inner diameter of the annular boss (122) is adapted to the outer diameter of the antibacterial cavity (121).

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