A multi-layer composite high-efficiency filter cartridge

Abstract

The utility model discloses a kind of multilayer composite high-efficiency filter filter core, including by inside to outside sequentially arranged support layer, primary efficiency filter layer, electrostatic adsorption layer, high-efficiency filter layer and protective layer.Support layer provides structural support, primary efficiency filter layer intercepts large particle pollutants, electrostatic adsorption layer captures tiny particles, high-efficiency filter layer realizes depth filtration, and protective layer prolongs filter core life.Filter core main body edge is equipped with sealing rubber ring to ensure sealing, and two ends are equipped with the connecting structure convenient for dismounting and installing.This filter core is filtered to different pollutants by multilayer composite structure, with high dust capacity, long life, low resistance, easy to install and replace and the like advantages, suitable for a variety of high-precision filtration scenarios.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, specifically to a multi-layer composite high-efficiency filter element, which is suitable for scenarios requiring high-precision filtration such as air purification, liquid purification, and industrial waste gas treatment. It has broad application prospects, especially in fields with high requirements for filtration efficiency, dust holding capacity, and service life. Background Technology

[0002] In existing technologies, common filter cartridges typically employ a single-layer structure or a simple multi-layer stacked structure. Single-layer cartridges struggle to efficiently filter pollutants of varying particle sizes and properties simultaneously when faced with complex contaminants. Furthermore, their limited dust holding capacity makes them prone to clogging, leading to decreased filtration efficiency and shortened lifespan. While simple multi-layer stacked structures improve filtration to some extent, the lack of a proper synergistic mechanism between layers prevents them from fully utilizing the advantages of each material, resulting in high filtration resistance, high energy consumption, and poor filtration of fine particles and specific pollutants. Moreover, existing filter cartridges are complex to replace, hindering maintenance and use, and failing to meet the growing demand for high-efficiency filtration in modern industry and daily life. Utility Model Content

[0003] To address the problems mentioned in the background section, this invention provides a multi-layer composite high-efficiency filter element. Through optimized design of the filter element structure and materials, it achieves efficient filtration of different pollutants, increases the filter element's dust holding capacity and service life, reduces filtration resistance, and simplifies filter element replacement, thus meeting the needs for efficient, energy-saving, and convenient filtration.

[0004] A multi-layer composite high-efficiency filter element includes a filter element body, which comprises, from the inside out, a support layer, a pre-filter layer, an electrostatic adsorption layer, a high-efficiency filter layer, and a protective layer. The support layer is made of high-strength, corrosion-resistant porous metal mesh or polymer material, providing structural support for the entire filter element and ensuring its stable shape during filtration. The pre-filter layer is composed of a non-woven fabric material with relatively low fiber density, forming large pores between the fibers to intercept larger particulate pollutants in the air or liquid, such as dust, hair, and suspended solids, thus providing preliminary filtration. The electrostatic adsorption layer uses electret technology. The polypropylene fiber material used in the air conditioning process adsorbs and captures fine particulate pollutants such as PM2.5, bacteria, and viruses after passing through the primary filter layer through electrostatic adsorption, thereby improving filtration efficiency. The high-efficiency filter layer is made of high-density glass fiber or polytetrafluoroethylene material, which has very fine fiber pore size and complex pore structure, enabling deep filtration of residual fine particles and harmful chemicals, ensuring that the filtered air or liquid reaches a high level of purity. The protective layer is made of waterproof, oil-proof, and wear-resistant polymer material, which can effectively protect the internal filter layer from damage by external environmental factors and extend the service life of the filter element.

[0005] Furthermore, the filter element body is provided with a sealing ring on its edge. The sealing ring is made of highly elastic silicone or rubber material, which can fit tightly with the installation interface of the filtration equipment to prevent unfiltered air or liquid from leaking from the edge of the filter element and ensure the filtration effect.

[0006] Furthermore, the filter element body has connection structures at both ends that are easy to disassemble and install. The connection structures can be snap-fit, threaded, or plug-in structures, which facilitates users to quickly replace the filter element and improves the ease of use.

[0007] Compared with the prior art, the beneficial effects of this utility model are:

[0008] Multi-layer composite structure design: Through the synergistic effect of the primary filter layer, electrostatic adsorption layer and high-efficiency filter layer, it achieves graded filtration of pollutants of different particle sizes and properties, significantly improving filtration efficiency. It can effectively remove dust, bacteria, viruses, harmful chemicals, etc. from the air or liquid, with filtration precision reaching the nanometer level.

[0009] High dust holding capacity and long service life: The pre-filter layer intercepts large particulate pollutants first, reducing the load on subsequent filter layers. The electrostatic adsorption layer and the high-efficiency filter layer have reasonable pore structure and material properties, which enable them to have high dust holding capacity. At the same time, the protective layer effectively protects the internal filter layer, extending the overall service life of the filter element and reducing the cost of use. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0013] In the picture:

[0014] The filter element consists of a main body 1, a support layer 11, a pre-filter layer 12, an electrostatic adsorption layer 13, a high-efficiency filter layer 14, and a protective layer 15. Detailed Implementation

[0015] 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.

[0016] Example 1

[0017] like Figure 1-2 As shown;

[0018] A multi-layer composite high-efficiency filter element.

[0019] This implementation plan addresses the technical problems existing in the prior art, as disclosed in the background section above: "In the prior art, common filter cartridges typically employ a single-layer structure or a simple multi-layer stacked structure. Single-layer filter cartridges struggle to simultaneously achieve efficient filtration of pollutants of different particle sizes and properties when faced with complex contaminants, and their limited dust holding capacity makes them prone to clogging, leading to decreased filtration efficiency and shortened service life. While simple multi-layer stacked structures improve filtration efficiency to some extent, they lack a reasonable synergistic mechanism between layers, failing to fully utilize the advantages of each material, resulting in high filtration resistance, high energy consumption, and poor filtration of fine particles and special pollutants. Furthermore, existing filter cartridges are complex to replace, hindering maintenance and use, and failing to meet the growing demand for high-efficiency filtration in modern industry and daily life." Considering practical application, this problem is clearly real and difficult to solve. Therefore, to address this technical problem, a multi-layer composite high-efficiency filter cartridge is provided.

[0020] like Figure 1-2 As shown in the figure;

[0021] Based on the above, the production of this multi-layer composite high-efficiency filter element begins with the preparation of materials for each functional layer. The support layer is made of high-strength stainless steel porous mesh, cut to a shape matching the dimensions of the filter element body. The primary filter layer uses polyester fiber non-woven fabric, which is hot-pressed to achieve a suitable pore structure and thickness. The electrostatic adsorption layer uses polypropylene fiber material treated with electret, manufactured as the required filter material through needle punching or melt-blowing processes. The high-efficiency filter layer uses glass fiber material, which undergoes special weaving and processing techniques to form a filter layer with high filtration efficiency. The protective layer uses polyvinylidene fluoride polymer material, which is extruded into a thin film.

[0022] Then, the functional layers are stacked in sequence from the inside out. First, the support layer is placed, then the primary filter layer is laid on the outside of the support layer, followed by the electrostatic adsorption layer and the high-efficiency filter layer. Finally, the protective layer is wrapped on the outermost side, and the layers are firmly bonded together by ultrasonic welding or hot pressing to form the filter element body.

[0023] At the edges of the filter element body, silicone sealing rings are evenly applied using an adhesive applicator to ensure a tight bond between the rings and the filter element body. At both ends of the filter element body, snap-fit ​​connection structures are installed, connecting the snap-fit ​​components to the filter element body via injection molding or mechanical fastening.

[0024] In practical applications, the filter element of this invention is installed at the corresponding mounting interface of filtration devices such as air purifiers, water purifiers, and industrial waste gas treatment equipment, ensuring a tight seal between the sealing ring and the mounting interface. When air or liquid passes through the filter element, the pre-filter layer first intercepts large particulate pollutants. After preliminary filtration, the air or liquid enters the electrostatic adsorption layer, where tiny particulate pollutants are captured by electrostatic adsorption. Finally, it undergoes deep filtration through the high-efficiency filter layer, achieving a high-purity filtration effect. When the filter element reaches the end of its service life or its filtration efficiency decreases, it can be quickly disassembled and replaced with a new filter element by operating the snap-fit ​​connection structure at both ends.

[0025] In practical use, when rainwater flows from the bridge to the drain, it first undergoes preliminary filtration through the permeable holes on the top of the filter cover, trapping larger debris. As rainfall continues, the rain sensor detects the rainwater and activates the micro-gear motor, which drives the actuating plate to rotate, clearing accumulated debris from the filter cover and ensuring the permeable holes remain unobstructed. Rainwater then flows smoothly through the filter cover into the bridge's drainage pipes, completing the drainage process. When the rainfall stops and the rain sensor no longer detects rainwater, it stops the micro-gear motor, and the entire device enters standby mode, awaiting the next rainfall event.

[0026] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-layer composite high-efficiency filter element, characterized in that, The filter includes a filter element body (1), which is provided with a support layer (11), a pre-filter layer (12), an electrostatic adsorption layer (13), a high-efficiency filter layer (14), and a protective layer (15) from the inside to the outside. The support layer (11) is used to provide structural support for the entire filter element. The pre-filter layer (12) is used to intercept particulate pollutants with larger particle sizes. The electrostatic adsorption layer (13) is used to adsorb and capture small particulate pollutants. The high-efficiency filter layer (14) is used for deep filtration of residual microparticles and harmful chemicals; the protective layer (15) is used to protect the inner filter layer.

2. The multi-layer composite high-efficiency filter element according to claim 1, characterized in that, The filter element body (1) is provided with a sealing ring on its edge. The sealing ring is used to fit tightly with the installation interface of the filter equipment to prevent unfiltered air or liquid from leaking out.

3. The multi-layer composite high-efficiency filter element according to claim 1, characterized in that, The filter element body (1) has connection structures at both ends that facilitate disassembly and installation.

4. The multi-layer composite high-efficiency filter element according to claim 1, characterized in that, The support layer (11) is made of high-strength, corrosion-resistant porous metal mesh or polymer material.

5. The multi-layer composite high-efficiency filter element according to claim 1, characterized in that, The primary filter layer (12) is made of a nonwoven material with a relatively low fiber density.

6. The multi-layer composite high-efficiency filter element according to claim 1, characterized in that, The electrostatic adsorption layer (13) is a polypropylene fiber material processed using electret treatment.

7. The multi-layer composite high-efficiency filter element according to claim 1, characterized in that, The high-efficiency filter layer (14) is made of high-density glass fiber or polytetrafluoroethylene material.

8. The multi-layer composite high-efficiency filter element according to claim 1, characterized in that, The protective layer (15) is made of waterproof, oil-proof and wear-resistant polymer material.

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