A composite filter and filter

Abstract

This utility model provides a composite filter and filter, belonging to the field of filtration technology. It includes a filter body comprising a V-shaped folded portion integrally connected in sequence. The filter body is disposed within a frame and fixedly connected to the frame. The filter body includes a protective layer, a filtration and purification layer, and a support layer, which are sequentially bonded and fixed. The protective layer is made of non-woven fabric or mesh, the filtration and purification layer is made of porous mineral fiber material, and the support layer is made of non-woven fabric or metal mesh. Sealing plates are provided on both sides of the frame, covering the annular space within the frame. The sealing plates have through openings communicating with the annular space, forming a receiving cavity between the sealing plates and the frame. The edge of the filter body is disposed within the receiving cavity. The advantage is that the filter body adopts a composite structure design of a protective layer, a filtration and purification layer, and a support layer, significantly improving the mechanical strength and molding performance of the material, enabling it to meet the requirements of industrial production and overcoming the bottleneck of traditional porous mineral fibers being difficult to apply due to their softness and fragility.

Description

Technical Field

[0001] This utility model belongs to the field of filtration technology, and in particular relates to a composite filter and filter. Background Technology

[0002] With increasing attention being paid to indoor air pollution, air purification equipment is being used more and more widely in home and office environments. Air purifiers typically contain multiple functional filters to effectively remove particulate matter, formaldehyde, TVOC (total volatile organic compounds), odors, and other harmful gases from the air.

[0003] However, existing air purification filter materials still face numerous technical bottlenecks. On the one hand, porous adsorption materials typically exist in granular or powder form, requiring adhesives to fix them onto a substrate in practical applications. This not only complicates the process and increases production costs, but also risks clogging the pores of the porous material with adhesives, reducing its adsorption performance and potentially releasing odors, thus impacting user experience. On the other hand, while porous mineral fiber materials possess excellent adsorption and catalytic decomposition properties, their soft texture and poor mechanical strength make them difficult to directly process and shape. Furthermore, they exhibit high airflow resistance during use, limiting their large-scale application in the air purification industry. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a composite filter structure.

[0005] The objective of this utility model can be achieved through the following technical solution: a composite filter screen, comprising: The frame comprises multiple fixed plates connected end-to-end in a ring-shaped structure. The filter body includes V-shaped folds connected in sequence. The filter body is disposed within the frame and is fixedly connected to the frame. The filter body includes a protective layer, a filtration and purification layer, and a support layer that are bonded and fixed in sequence. The protective layer is made of non-woven fabric or mesh. The filtration and purification layer is made of porous mineral fiber material. The support layer is made of non-woven fabric or metal mesh. The frame has sealing plates on both sides covering the annular space inside the frame, and the sealing plates have through openings that communicate with the annular space. The sealing plates and the frame form a receiving cavity, and the edge of the filter body is located in the receiving cavity.

[0006] In the aforementioned composite filter, the frame is integrally formed with one of the sealing plates, and the frame is fixedly connected to the other sealing plate.

[0007] In the aforementioned composite filter, the sealing plate is one of a flat plate, annular plate, arc-shaped plate, and irregularly shaped plate.

[0008] In one of the composite filters described above, a pull ring is provided on the frame.

[0009] In the aforementioned composite filter, a particulate filter layer is further provided between the protective layer and the filtration and purification layer.

[0010] In the aforementioned composite filter, the material of the particulate filter layer is one of the following: hot air cotton, electrostatic cotton, meltblown material, PTFE, and glass fiber material.

[0011] In the aforementioned composite filter, the nonwoven fabric is one of polyester, polyethylene, polypropylene, polyurethane, polyethylene terephthalate, polyamide, and polylactic acid; the mesh material is one of polyethylene, polypropylene, polyurethane, polyamide, polyvinyl chloride, and glass fiber.

[0012] In the aforementioned composite filter, the porous mineral fiber material is one of activated carbon fiber, ceramic fiber, molecular sieve, or porous material fiber.

[0013] In the aforementioned composite filter, the metal mesh is made of one of aluminum, iron, or stainless steel.

[0014] A filter comprising the aforementioned composite filter screen.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) The filter body adopts a composite structure design of protective layer, filtration and purification layer and support layer, which significantly improves the mechanical strength and molding performance of the material, enabling it to meet the requirements of industrial production and overcoming the bottleneck of traditional porous mineral fibers being difficult to apply due to their soft and fragile nature. Utilizing the excellent adsorption and catalytic decomposition properties of porous mineral fiber materials, it can efficiently remove common harmful gases in the air such as formaldehyde, benzene series compounds, and TVOC, thereby improving indoor air quality and meeting the needs of home and office environments for healthy air; (2) In addition, the filter body adopts a V-shaped folding structure, which increases the effective filtration area and further improves the purification efficiency; the sealing plate can prevent external dust, debris and other objects from entering the filter or the space between the filter and the frame, avoiding these foreign objects from affecting the normal operation of the filter or causing secondary pollution. At the same time, the sealing plate may also play a role in strengthening the structure of the entire filter assembly. Especially when the filter size is large or the shape is complex, the sealing plate provides additional rigid support for the filter, which helps to maintain its shape stability and reduce the risk of deformation caused by airflow impact. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the composite filter. Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure at point A in the middle; Figure 4 It is a schematic diagram of the three-dimensional structure of the frame; Figure 5 This is a schematic diagram of the composite filter screen when the sealing plate is an arc plate; Figure 6 This is a schematic diagram of the composite filter screen when the sealing plate is a ring plate.

[0017] In the diagram, 100 is the frame; 101 is the sealing plate; 102 is the pull ring; 103 is the receiving cavity; 200 is the filter body; 201 is the protective layer; 202 is the filtration and purification layer; 203 is the support layer; and 204 is the particle filtration layer. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] like Figures 1-6 As shown, a composite filter screen includes: The frame 100 includes multiple fixed plates connected end to end in a ring structure; The filter body 200 includes V-shaped folds connected in sequence. The filter body 200 is disposed within the frame 100 and is fixedly connected to the frame 100. The filter body 200 includes a protective layer 201, a filtration and purification layer 202, and a support layer 203 that are bonded and fixed in sequence. The protective layer 201 is made of non-woven fabric or mesh, the filtration and purification layer 202 is made of porous mineral fiber material, and the support layer 203 is made of non-woven fabric or metal mesh. The frame 100 has sealing plates 101 on both sides covering the annular space inside the frame 100, and the sealing plates 101 have through openings that communicate with the annular space. The sealing plates 101 and the frame 100 form a receiving cavity 103, and the edge of the filter body 200 is located in the receiving cavity 103.

[0021] In this embodiment, the filter body 200 adopts a composite structure design of a protective layer 201, a filtration and purification layer 202, and a support layer 203, which significantly improves the mechanical strength and molding performance of the material, enabling it to meet the requirements of industrial production and overcoming the bottleneck of traditional porous mineral fibers being difficult to apply due to their softness and fragility. Utilizing the excellent adsorption and catalytic decomposition properties of porous mineral fiber materials, common harmful gases in the air such as formaldehyde, benzene compounds, and TVOCs are efficiently removed, thereby improving indoor air quality and meeting the needs of homes and offices for healthy air.

[0022] In addition, the filter body 200 adopts a V-shaped folding structure, which increases the effective filtration area and further improves the purification efficiency. The sealing plate 101 can prevent external dust, debris and other objects from entering the filter or the space between the filter and the frame 100, avoiding these foreign objects from affecting the normal operation of the filter or causing secondary pollution. At the same time, the sealing plate 101 may also play a role in strengthening the structure of the entire filter assembly. Especially when the filter size is large or the shape is complex, the sealing plate 101 provides additional rigid support for the filter, which helps to maintain its shape stability and reduce the risk of deformation caused by airflow impact.

[0023] The filter purification layer 202 is made of porous mineral fiber material, which has excellent adsorption and catalytic decomposition performance and can efficiently remove particulate matter, formaldehyde, odor and other harmful gases from the air. The protective layer 201 and the support layer 203 are made of non-woven fabric or metal mesh and other structurally stable materials, which ensure the mechanical strength of the filter screen and prevent the porous mineral fibers from being directly exposed, thus avoiding damage or failure caused by external forces.

[0024] Furthermore, the frame 100 is integrally formed with one of the side panels 101, and the frame 100 is fixedly connected with the other side panel 101.

[0025] In this embodiment, by integrating the side sealing plate 101 with the frame 100, the integrated side sealing plate 101 and frame 100 enhance the rigidity and stability of the overall structure, which helps to resist airflow impact and other external forces, and protects the internal filter from damage.

[0026] Further defined, the sealing plate 101 is one of the following: flat plate, ring plate, arc plate, and irregular plate.

[0027] like Figure 1 As shown, the sealing plate 101 is a flat plate. The flat plate structure is suitable for standard square or rectangular filter frames, which is convenient for processing and assembly; as an optional solution, such as Figure 6 As shown, the sealing plate 101 is a ring-shaped plate. The ring-shaped plate structure can better fit the circular or near-ring-shaped frame design, enhancing the overall structural stability; as another optional solution, such as Figure 5As shown, the sealing plate 101 is an arc-shaped plate. The arc-shaped plate structure has advantages in terms of aerodynamics, which helps to guide the airflow evenly through the filter body 200, reduce local resistance, and improve purification efficiency.

[0028] It is worth mentioning that, such as Figure 1 As shown, the planar plate is quadrilateral in shape, while in other alternatives, the planar plate can be other polygonal shapes.

[0029] Furthermore, a pull ring 102 is provided on the frame 100. The pull ring 102 provides a convenient handhold for the user, making it easier to install and remove the filter. Especially in situations where space is limited or the filter is heavy, the user can easily operate using the pull ring 102.

[0030] In a further preferred embodiment, a particulate filter layer 204 is provided between the protective layer 201 and the filter purification layer 202.

[0031] Specifically, the material of the particulate filter layer 204 is one of the following: hot air cotton, electrostatic cotton, meltblown material, PTFE, or glass fiber material.

[0032] In this embodiment, by selecting one or more of the above-mentioned material combinations, the particulate filter layer 204 can effectively remove fine particulate matter in the air, such as dust, pollen, PM2.5, etc., ensuring that the output air quality meets high standards. While ensuring filtration performance, it also has good physical and chemical stability and can work stably for a long time under various environmental conditions.

[0033] Preferably, the nonwoven fabric is one of polyester, polyethylene, polypropylene, polyurethane, polyethylene terephthalate, polyamide, and polylactic acid; the mesh material is one of polyethylene, polypropylene, polyurethane, polyamide, polyvinyl chloride, and glass fiber.

[0034] In this embodiment, the main function of the protective layer 201 is to protect the underlying porous mineral fibers and other sensitive materials, preventing large particles from directly contacting and potentially causing damage.

[0035] Nonwoven fabrics are widely used due to their good physical properties (such as strength, flexibility and chemical stability). For nonwoven fabric materials, the basis weight range is 15-100g / m², which can ensure that the material has sufficient strength to provide effective protection without being too thick and affecting air circulation efficiency.

[0036] The mesh structure is also available in a variety of materials, providing additional mechanical support while allowing airflow. When using a mesh structure, the shape of the holes can be one of different geometric shapes such as square, rectangle, circle, rhombus, hexagon, or triangle to suit various application requirements. The pore size ranges from 10 to 100 mesh, a design that effectively prevents larger particles from entering the next layer while ensuring good breathability.

[0037] Further preferred, the porous mineral fiber material is one of activated carbon fiber, ceramic fiber, molecular sieve, or porous material fiber.

[0038] The second layer, as the core of the composite filter, uses porous mineral fiber material and is mainly used to filter and purify fine particulate matter, harmful gases (such as formaldehyde), odors and other volatile organic compounds (TVOC) in the air.

[0039] The fineness of the porous mineral fibers is in the micrometer range, with a filament diameter ranging from 5μm to 50μm. The thickness of the porous mineral fiber layer can be adjusted from 0.5mm to 5mm, while its basis weight ranges from 10g / m² to 300g / m².

[0040] Preferably, the metal mesh is made of aluminum, iron, or stainless steel to enhance the stability and durability of the structure.

[0041] Choose materials based on specific needs: if lightweight and corrosion resistance are the main considerations, aluminum may be a better choice; if cost and basic mechanical support are more important, iron can be considered; and when high strength, durability and corrosion resistance are required, stainless steel is undoubtedly the best option.

[0042] Further specifying, the frame 100 and the sealing plate 101 are made of one of the following materials: paper frame, PU, ​​or metal. Depending on the material and requirements, adhesives, clips, screws, or other methods of fixing are selected. Different application environments require different material choices: if used in a high-humidity environment, a metal frame 100 or moisture-proof treatment of the paper frame should be prioritized; if shock absorption and noise reduction are emphasized, PU is a good choice.

[0043] A filter comprising the aforementioned composite filter screen.

[0044] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A composite filter screen, characterized by include: The frame comprises multiple fixed plates connected end-to-end in a ring-shaped structure. The filter body includes V-shaped folds connected in sequence. The filter body is disposed within the frame and is fixedly connected to the frame. The filter body includes a protective layer, a filtration and purification layer, and a support layer that are bonded and fixed in sequence. The protective layer is made of non-woven fabric or mesh. The filtration and purification layer is made of porous mineral fiber material. The support layer is made of non-woven fabric or metal mesh. The frame has sealing plates on both sides covering the annular space inside the frame, and the sealing plates have through openings that communicate with the annular space. The sealing plates and the frame form a receiving cavity, and the edge of the filter body is located in the receiving cavity.

2. The composite screen of claim 1 wherein, The frame is integrally formed with the sealing plate on one side, and the frame is fixedly connected to the sealing plate on the other side.

3. The composite screen of claim 1 wherein, The sealing plate is one of the following: a flat plate, a ring plate, an arc plate, and an irregularly shaped plate.

4. The composite screen of claim 1 wherein, The frame is equipped with pull rings.

5. The composite screen of claim 1 wherein, A particulate filter layer is also provided between the protective layer and the filter purification layer.

6. The composite screen of claim 5 wherein, The material of the particulate filter layer is one of the following: hot air cotton, electrostatic cotton, meltblown material, PTFE, and glass fiber material.

7. The composite screen of claim 1 wherein, The nonwoven fabric is one of polyester, polyethylene, polypropylene, polyurethane, polyethylene terephthalate, polyamide, and polylactic acid; the mesh material is one of polyethylene, polypropylene, polyurethane, polyamide, polyvinyl chloride, and glass fiber.

8. The composite screen of claim 1 wherein, The porous mineral fiber material is one of activated carbon fiber, ceramic fiber, molecular sieve, or porous material fiber.

9. The composite screen of claim 1 wherein, The metal mesh is made of one of the following materials: aluminum, iron, or stainless steel.

10. A filter characterized by, Includes the composite filter as described in any one of claims 1-9.

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