Filtering screen, filtering assembly and filter

Abstract

The utility model provides a filter screen, filter assembly and filter, wherein filter screen includes: lattice skeleton structure, including by skeleton silk intercross connection forms a plurality of skeleton intersection points, radial filament, radial filament is around part skeleton intersection point setup, connects the adjacent skeleton silk of part skeleton intersection point gradually, forms on the skeleton silk and has the skeleton radial intersection point, the filter medium of adhesion in skeleton silk and / or radial filament, the utility model discloses filter screen greatly promotes adsorption efficiency, and promotes filter quality.

Description

Technical Field

[0001] This utility model relates to the field of purification technology, specifically to a filter screen, filter assembly and filter, which can be used for air purification or water purification. Background Technology

[0002] Currently, in the fields of air filtration and water filtration, the filter medium is usually attached to the filter screen. The structure of the filter screen mainly includes honeycomb structure and diamond structure, but there is still room for improvement in its technical approach.

[0003] Inspired by the hexagonal close-packed structure of honeycombs in nature, the honeycomb structure's core advantage lies in achieving high mechanical strength and stability through regular channels. It was initially widely used in automotive exhaust catalyst carriers and has since been extended to air and water filtration. This design can be seen in patent publications CN201253524Y (Honeycomb Air Filter Element) and CN107246336A (A Novel Honeycomb Air Filter Element and its Manufacturing Method). While this design improves filtration performance through pore wall surface modification, the inherent defects of parallel channels result in high fluid resistance. With the honeycomb mesh as a support, the filling of the filter medium within the mesh may be uneven, causing differences in air resistance between each cell during use. This can easily lead to airflow deviation, insufficient contact filtration, and negatively impact performance.

[0004] The diamond structure originates from traditional metal weaving techniques, simplifying the manufacturing process and reducing costs through the symmetrical arrangement of diamond meshes. A typical example is the 3MFiltrete diamond-shaped metal filter, which uses 304 stainless steel wire woven together and employs multi-layer stacking to enhance its interception capacity. However, the uniform pore size design of this type of structure results in insufficient interception efficiency after the application of filter media, such as an activated carbon layer, and significant stress concentration at the diamond nodes, leading to high deformation rates after long-term use and ultimately causing pore distortion and failure. This design can be seen in patent document CN208612039U (A Diamond-Shaped Air Filter). Although attempts have been made to compensate for performance shortcomings through composite layering or material modification, the physical limitations of uniform pore size have not been overcome, and efficiency improvements still rely on sacrificing volume or energy consumption.

[0005] In addition, the rise of biomimetic fiber filter materials in recent years has provided new ideas for the industry. For example, a certain electrospun nanofiber membrane has an activated carbon layer attached to the surface of an ultrafine fiber network, but its uniform pore size design still faces the challenges of excessive pressure drop and insufficient mechanical strength.

[0006] Therefore, how to provide a filter with a reasonable structural design and high filtration efficiency is a technical problem that urgently needs to be solved. Utility Model Content

[0007] The problem solved by this invention is to provide a filter screen, a filter component, and a filter for air purification or water purification, which greatly improves adsorption efficiency and filtration quality.

[0008] To solve the above problems, this utility model provides a filter screen, comprising: a mesh-like skeleton structure including multiple skeleton intersections formed by the mutual cross-connection of skeleton wires; radial wires, the radial wires being arranged around some of the skeleton intersections and sequentially connected to form adjacent skeleton wires with some of the skeleton intersections, and skeleton-radial intersections being formed on the skeleton wires; and a filter medium attached to the skeleton wires and / or the radial wires.

[0009] Optionally, the mesh-like skeleton structure includes multiple skeleton intersections formed by the intersecting of different numbers of skeleton wires.

[0010] Optionally, the mesh-like skeleton structure includes skeleton intersections formed by 3-10 skeleton filaments.

[0011] Optionally, the spokes are arranged around all the skeleton intersections formed by 3-10 skeleton wires, and adjacent skeleton wires forming the skeleton intersections are connected in sequence.

[0012] Optionally, the mesh-like skeleton structure includes skeleton intersections formed by 3-5 skeleton filaments.

[0013] Optionally, the spokes connecting adjacent skeleton wires are arc-shaped, especially when the filter is in use, the spokes between adjacent skeleton wires are arc-shaped.

[0014] Optionally, the included angles between adjacent skeleton wires forming the intersection of the skeleton are equal.

[0015] Optionally, the skeleton wires have at least two or at least three radial intersections in the direction extending from the skeleton intersection.

[0016] Optionally, on the skeleton wire, the distance between the skeleton intersection point and its adjacent bone radial intersection point may be the same as or different from the distance between any two adjacent bone radial intersection points.

[0017] Optionally, on the skeleton wire, the distance between the skeleton intersection point and its adjacent radii intersection point, as well as the distance between any adjacent radii intersection points, increases or decreases from the skeleton intersection point in the direction extending along the skeleton wire.

[0018] Optionally, the distance between the skeletal intersection point and its adjacent radial intersection point, and the distance between any adjacent radial intersection points, shall not exceed 50 mm, or 30 mm, or 20 mm, or 15 mm, or 10 mm, or 5 mm, or 3 mm, or 2 mm, or 1 mm.

[0019] Optionally, the distance between the skeletal intersection point and its adjacent radii intersection point, and the distance between any adjacent radii intersection points, shall not be less than 0.01 mm, or not less than 0.05 mm, or not less than 0.1 mm, or not less than 0.5 mm, or not less than 1.0 mm.

[0020] Optionally, the distance between the skeletal intersection point and its adjacent radial intersection point, as well as the distance between any adjacent radial intersection points, can be an interval consisting of any of the aforementioned values, for example, 0.01mm - 50mm, or 0.05mm–30mm, or 0.1mm–10mm, or 0.1mm-5mm, or 0.1mm–3mm, or 0.1mm-2mm, or 0.1mm-1mm.

[0021] Optionally, different radial wires arranged around adjacent skeletal intersections are connected to each other at at least one of the skeletal radial intersections.

[0022] Optionally, the different radial wires arranged around the adjacent skeletal intersections are connected to each other at at least one skeletal radial intersection furthest from the skeletal intersection around which they are arranged.

[0023] Optionally, the filter medium is attached to one or both sides of the skeleton filament and the radial filament.

[0024] Optionally, the filter medium is attached to the same side of the skeleton filament and the bundled radial filament.

[0025] Optionally, the filter medium may be made of activated carbon or diatomaceous earth.

[0026] Optionally, the skeleton wire and the radial wire are made of metal and / or resin materials.

[0027] Optionally, the skeleton filament and the radial filament are made of polypropylene, polycarbonate, polyamide, or acrylonitrile-butadiene-styrene polymer.

[0028] Optionally, the diameter of the skeleton wire and the radial wire is not less than 0.01 mm, or not less than 0.03 mm, or not less than 0.05 mm, or not less than 0.1 mm, or not less than 0.3 mm, or not less than 0.5 mm, or not less than 1.0 mm.

[0029] Optionally, the diameter of the skeleton wire and the radial wire is no greater than 5.0 mm, or no greater than 3.0 mm, or no greater than 3.0 mm, or no greater than 2.5 mm, or no greater than 2.0 mm, or no greater than 1.5 mm, or no greater than 1.0 mm.

[0030] Optionally, the diameter of the skeleton wire and the radial wire is 0.01 mm - 5.0 mm, or 0.05 mm - 30 mm, or 0.1 mm - 1.0 mm, or any range of the aforementioned values.

[0031] Optionally, the skeleton wire and the radial wire may have the same or different diameters.

[0032] Optionally, the diameter of the skeleton wire is larger than the diameter of the radial wire.

[0033] Optionally, at least some of the spokes are arranged in a spiral manner around the intersection of the skeleton.

[0034] Optionally, the distance between different bone radial intersections formed by the same radial wire and the same skeletal intersection formed by the skeletal wires forming the different bone radial intersections differs by less than 20%.

[0035] A filtering assembly includes the filter screen described above and an accessory for receiving and / or fixing the filter screen.

[0036] Optionally, the filter screen may be planar, cylindrical, or spherical.

[0037] Optionally, it may include two or more layers of the filter screen, such as 2-5 layers, and the intersection points of the skeletons of two adjacent layers of the filter screen in the stacking direction may at least partially overlap or not overlap.

[0038] Optionally, the radial intersections of two adjacent filter layers in the stacking direction may at least partially overlap or not overlap at all.

[0039] A filter for air purification or water purification, comprising the filter screen or the filter assembly described above.

[0040] Compared with the prior art, the technical solution of this utility model has the following advantages: In the technical solution of this utility model's filter screen, a mesh-like skeleton structure includes multiple skeleton intersections formed by the interlocking of skeleton wires; radial wires, which are arranged around some of the skeleton intersections and sequentially connected to adjacent skeleton wires forming some of the skeleton intersections, forming skeleton-radial intersections on the skeleton wires; and a filter medium attached to the skeleton wires and / or the radial wires. Through the combination of the mesh-like skeleton structure, radial wires, and filter medium, a filter screen with filtering function is formed. The skeleton structure provides support, the radial wires enhance structural stability and increase the filtration area, and the filter medium directly achieves the filtration effect, effectively intercepting impurities or harmful substances. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the filter screen structure in one embodiment; Figure 2 This is a data diagram of airflow distribution in a honeycomb structure filter in the prior art; Figure 3 This is a schematic diagram of the filter screen in one embodiment of the present invention; Figure 4 for Figure 3 A schematic diagram of a structure without attached filter media; Figure 5 This is a schematic diagram of the structure of a filter unit in one embodiment of the present invention; Figure 6 This is a schematic diagram of the filter screen in another embodiment of the present invention; Figure 7 This is a schematic diagram of the filter screen in another embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the filter screen in another embodiment of the present invention; Figure 9 This is a data diagram of the airflow distribution of the filter screen in this embodiment. Detailed Implementation

[0042] The existing honeycomb structure filter 100 has a problem where the activated carbon is not evenly packed in the honeycomb mesh (please refer to...). Figure 1 During use, the air resistance of each cell grid varies, which can easily lead to airflow deviation (please refer to...). Figure 2 This affects the adsorption effect.

[0043] Figure 2 It uses Solidworks software to simulate airflow. Figure 1 The data shows the air velocity distribution of the honeycomb structure filter 100. Figure 1 The size of the middle filter screen is approximately 54mm. 39mm, and the honeycomb skeleton is completely covered with activated carbon. The inventors discovered that... Figure 2The red area in region A represents the highest airflow velocity. High-speed airflow causes greater wear on the filter media or makes it more difficult to capture pollutant particles. The blue area in region B represents the lowest airflow velocity, where pollutants tend to accumulate because the airflow is insufficient to carry them away. This uneven velocity distribution increases the tendency for air to bypass the filter media, making it harder to capture airborne particles and reducing the effectiveness of air filtration. In existing honeycomb filter structures, the difference between the maximum and minimum airflow velocities after passing through the filter is nearly 100 times.

[0044] Based on this, the present invention provides a filter screen, comprising a mesh-like skeleton structure, wherein the mesh-like skeleton structure includes multiple skeleton intersections formed by the intersecting connection of skeleton wires; radial wires, which are arranged around some of the skeleton intersections and sequentially connected to adjacent skeleton wires forming some of the skeleton intersections, forming skeleton-radial intersections on the skeleton wires; and a filter medium attached to the skeleton wires and / or the radial wires. The technical solution of the present invention, through the combination of the mesh-like skeleton structure, radial wires, and filter medium, forms a filter screen with filtering function. The skeleton structure provides support, the radial wires enhance structural stability and increase the filtration area, and the filter medium directly achieves the filtration effect, effectively intercepting impurities or harmful substances.

[0045] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0046] Please refer to the reference. Figure 3 , Figure 4 and Figure 5 A filter screen 200 includes a mesh-like skeleton structure 201, radial wires 202, and a filter medium 203.

[0047] In this embodiment, the mesh-like skeleton structure 201 includes a plurality of skeleton intersections 201-2 formed by the mutual cross-connection of skeleton wires 201-1; the radial wires 202 are arranged around a portion of the skeleton intersections 201-2, and are sequentially connected to form adjacent skeleton wires 201-1 with a portion of the skeleton intersections 201-2, and skeleton-radial intersections 202-1 are formed on the skeleton wires 201-1; the filter medium 203 is attached to the skeleton wires 201-1 and the radial wires 202.

[0048] In this embodiment, the intersection point between the skeleton wire 201-1 and the skeleton wire 201-2 is the skeleton intersection point 201-2, and the intersection point between the radial wire 202 and the skeleton wire 201-1 is the bone-radial intersection point 202-1.

[0049] In this embodiment, a filter screen 200 with filtering function is formed by combining a mesh-like skeleton structure 201, radial wires 202, and filter medium 203. The skeleton structure provides support, the radial wires 202 enhance structural stability and increase the filtration area, and the filter medium 203 directly achieves the filtration function, effectively intercepting impurities or harmful substances.

[0050] Of course, in some embodiments, the filter medium 203 may also be attached to the skeleton filament 201-1 or the radial filament 202.

[0051] In this embodiment, multiple skeleton wires 201-1 are arranged in an orderly manner, and the radial wires 202 form multiple repeating filter units around some of the skeleton intersections 201-2.

[0052] In some embodiments, please refer to Figure 6 The skeleton wires 201-1 can also be arranged randomly.

[0053] In this embodiment, the filter medium 203 is attached to the same side of the skeleton filament 201-1 and the radial filament 202.

[0054] In this embodiment, the mesh-like skeleton structure 201 includes multiple skeleton intersections 201-2 formed by the intersecting of different numbers of skeleton wires 201-1. That is, the number of skeleton wires 201-1 corresponding to the skeleton intersections 201-2 may be equal or unequal. The number and crossing method of skeleton wires 201-1 can be adjusted according to different filtration requirements and application scenarios to optimize the performance of the filter screen 200, such as improving filtration accuracy or enhancing structural strength.

[0055] In this embodiment, the mesh-like skeleton structure 201 includes skeleton intersections 201-2 formed by 3-10 skeleton wires 201-1. Preferably, the mesh-like skeleton structure 201 includes skeleton intersections 201-2 formed by 3-5 skeleton wires 201-1.

[0056] Please refer to Figure 5 The number of skeleton wires 201-1 at some skeleton intersections 201-2 is different. For example, the number of skeleton wires 201-1 at some skeleton intersections 201-2 is 4, while the number of skeleton wires 201-1 at some skeleton intersections 201-2 is 2.

[0057] Please refer to Figure 7 The number of skeleton wires 201-1 at all the skeleton intersection points 201-2 is the same, and the skeleton wires 201-1 are distributed in an orderly manner.

[0058] In this embodiment, the skeleton wires 201-1 in the same extending direction are arranged parallel to each other, and the spacing between the skeleton wires 201-1 is also equal.

[0059] In this embodiment, the spokes 202 are arranged around all the skeleton intersections 201-2 formed by 3-10 skeleton wires 201-1, and adjacent skeleton wires 201-1 forming the skeleton intersections 201-2 are connected sequentially. By arranging the spokes 202 around all skeleton intersections 201-2, the overall structural stability of the filter screen 200 is further enhanced. The continuous connection of the spokes 202 allows the filter screen 200 to be evenly stressed in all directions, reducing local stress concentration and extending the service life of the filter screen 200.

[0060] In this embodiment, during use, the radial wires 202 connecting adjacent skeleton wires 201-1 are arc-shaped. The arc-shaped radial wires 202 design increases the surface area of ​​the filter screen 200, allowing more filter media to be attached and improving filtration efficiency. The arc-shaped structure can also reduce the resistance of fluid flow to a certain extent, making the filtration process smoother, and can also better adapt to filter components of different shapes.

[0061] In one embodiment, when in use, the radial wires 202 connecting adjacent skeleton wires 201-1 can also be straight.

[0062] Please refer to Figure 3 or Figure 4 In this embodiment, the included angles between adjacent skeleton wires 201-1 forming the skeleton intersection 201-2 are equal. These equal angles make the structure of the filter screen 200 more uniform and symmetrical, thus ensuring consistent filtration performance. Regardless of the direction from which the fluid passes through the filter screen 200, the same filtration effect can be obtained, improving the reliability and versatility of the filter screen 200. Preferably, the included angle between adjacent skeleton wires 201-1 forming the skeleton intersection 201-2 is not greater than 120°, more preferably not greater than 90°, and particularly preferably not less than 30°, for example, 60°, 45°, or 30°.

[0063] Please refer to Figure 3 or Figure 4 The radial filaments 202 form a spider web structure on the skeleton filaments 201-1. The spider web structure ensures local stability and overall flexibility through the interlocking of the radial skeleton filaments 201-1 and the surrounding radial filaments 202. The cross fibers of the spider web structure form uniform open channels, increasing the contact area with activated carbon by 20%-30% when gas passes through, thereby improving adsorption efficiency (especially for small molecule VOCs such as formaldehyde and benzene compounds).

[0064] Of course, in some embodiments, the included angle between adjacent skeleton wires 201-1 forming the skeleton intersection 201-2 may not be equal.

[0065] In this embodiment, the skeleton wire 201-1 has at least two radial intersections 202-1 formed in the direction extending from the skeleton intersection 201-2. Depending on the distance between the skeleton intersections, multiple radial intersections 202-1 can also be formed, for example, 3-5. Multiple radial intersections 202-1 can better distribute stress, prevent the filter screen 200 from deforming or being damaged during use, and also improve the filtration accuracy of the filter screen 200.

[0066] In this embodiment, the distance between the skeleton wire 201-1 and the skeleton intersection point 201-2 and its adjacent radial intersection point 202-1 is different from the distance between any two adjacent radial intersection points 202-1, allowing the distribution of the radial intersection points 202-1 to be adjusted according to different filtration requirements. For example, in areas requiring higher filtration accuracy, the distance between any two adjacent radial intersection points 202-1 can be set smaller; while in areas with lower filtration accuracy requirements, the distance can be appropriately increased, thereby achieving local optimization of the filter 200 and meeting different filtration needs.

[0067] Of course, in some embodiments, the distance between the skeleton intersection point 201-2 and its adjacent bone radial intersection point 202-1 on the skeleton wire 201-1 may be the same as the distance between any adjacent bone radial intersection point 202-1.

[0068] Specifically, on the skeleton wire 201-1, the distance between the skeleton intersection point 201-2 and its adjacent radial intersection point 202-1, as well as the distance between any adjacent radial intersection points 202-1, increases from the skeleton intersection point 201-2 along the direction extending from the skeleton wire 201-1. Please refer to [reference needed]. Figure 3 or Figure 4 For example, starting from the skeleton intersection 201-2 and extending along the direction of the skeleton filaments, the distances between the skeleton intersection 201-2 and its adjacent radial intersection 202-1, and the distances between subsequent adjacent radial intersections 202-1, are 0.2 mm, 0.4 mm, 0.8 mm, and 1.4 mm, respectively. The outer layer has a larger pore size to intercept large particles, while the inner layer has a smaller pore size to adsorb gaseous pollutants, achieving multi-stage filtration.

[0069] In some embodiments, on the skeleton wire 201-1, the distance between the skeleton intersection point 201-2 and its adjacent radial intersection point 202-1, as well as the distance between any adjacent radial intersection points 202-1, decreases from the skeleton intersection point 201-2 in the direction extending along the skeleton wire 201-1.

[0070] In this embodiment, the distance between the skeletal intersection 201-2 and its adjacent radial intersection 202-1, as well as the distance between any two adjacent radial intersections 202-1, is no greater than 50mm.

[0071] In this embodiment, the different radial wires 202 arranged around the adjacent skeletal intersections 201-2 are connected to each other at at least one skeletal radial intersection 202-1. For details, please refer to... Figure 3 or Figure 4 Different radial wires 202 arranged around adjacent skeleton intersections 201-2 are connected to each other at at least one bone radial intersection 202-1 furthest from their respective skeleton intersections 201-2.

[0072] In some embodiments, the different radial wires 202 arranged around the adjacent skeleton intersection 201-2 may not be connected at the bone-radial intersection 202-1.

[0073] In some embodiments, please refer to Figure 8 At least some of the spokes 202 are arranged in a spiral shape around the intersection points 201-2 of the skeleton, which can increase the surface area and filtration efficiency of the filter screen 200. The spiral structure can also reduce the resistance of fluid flow to a certain extent, making the filtration process smoother, and can also better adapt to filter components of different shapes.

[0074] In some embodiments, at least two of the spokes 202 are arranged in a generally circular manner around the skeleton intersection point 201-2. The circular spoke design can improve the structural symmetry and uniformity of the filter screen 200, thereby ensuring the relative consistency of filtration performance. The circular structure can also reduce stress concentration to a certain extent and improve the durability of the filter screen 200. In this document, "generally circular" means that the distance between different skeleton intersection points formed by the same spoke and the same skeleton intersection point formed by the skeleton wires forming the different skeleton intersection points differs by less than 20%. Specifically, at least two of the spokes 202 are arranged in an arc shape with different radii around the same skeleton intersection point 201-2; different skeleton intersection points 202-1 formed by the same spoke 202 are arranged around the same skeleton intersection point 201-2, and the minimum distance between the different skeleton intersection points 202-1 and the skeleton intersection point 201-2 is d. min The maximum distance is d max , and d min With d max The difference ratio (d) max -d min ) / d max Less than 20%, or less than 10%, or less than 5%, or less than 3%, or less than 3%, or 0%.

[0075] In this embodiment, the filter medium 203 is attached to one side of the skeleton filament 201-1 and the radial filament 202; preferably the same side.

[0076] In this embodiment, the filter medium 203 is attached to one side of the skeleton filament 201-1 and the radial filament 202 by means of adhesive.

[0077] In some embodiments, the filter medium 203 is attached to both sides of the skeleton filament 201-1 and the radial filament 202. The amount and material of the filter medium 203 attached to both sides may be the same or different. In some embodiments, the amount of filter medium 203 attached to the skeleton filament 201-1 and the radial filament 202 on their respective sides is different.

[0078] In this invention, the filter medium 203 is not particularly limited and can be any filter medium capable of removing harmful substances by physical adsorption or chemical treatment. In this embodiment, the filter medium 203 is activated carbon. In some embodiments, the material of the filter medium 203 may also be diatomaceous earth, etc.

[0079] In this embodiment, activated carbon is attached to the surface of the skeleton filament 201-1 and the radial filament 202 using a glue-pouring technique.

[0080] In some embodiments, the filter medium 203 may also be attached to the surfaces of the skeleton filament 201-1 and the radial filament 202 by other means, such as by impregnation.

[0081] In this embodiment, the particle size of the activated carbon can be selected according to the usage environment. For example, it can be powdered carbon (e.g., 30-70 mesh), fine carbon (e.g., 12-30 mesh), coarse carbon (e.g., 6-12 mesh), columnar carbon (e.g., individual size greater than or equal to 1 mm), or spherical carbon (e.g., diameter greater than or equal to 1 mm).

[0082] In this embodiment, the skeleton filament 201-1 and the radial filament 202 are resin materials, such as PP (polypropylene), PC (polycarbonate), PA (polyamide), or ABS (acrylonitrile-butadiene-styrene polymer). Specifically, the resin material is ABS.

[0083] In some embodiments, the skeleton wire 201-1 and the radial wire 202 are made of metallic materials, such as steel wire or metal alloys. In other embodiments, the skeleton wire and the radial wire may be metal wires coated with resin materials, such as polyester compounds, to improve the adhesion of the filter media.

[0084] Figure 9 It uses Solidworks software to simulate air passing through, such as Figure 3The data shown are airflow velocity distribution data for the filter 200 of this invention, wherein the size of the filter is approximately 235. 235mm, and each of the skeleton filaments 201-1 and the radial filaments 202 is covered with activated carbon. From Figure 9 Area A, the red area, indicates faster airflow; the darker the red, the faster the speed. Area B indicates slower airflow. Figure 9 As can be seen in area A, when the airflow passes through at a speed of 6 m / s, after passing the center of filter 200, the airflow is accelerated to 6.659 m / s. The centrifugal effect continuously throws PM0.3 particles towards the windward side of the curved fiber. This "centrifugal effect" makes it easier for particles to collide with the fiber, increasing the chance of particles coming into contact with activated carbon and thus enhancing the adsorption effect of particles. From Figure 9 It can also be seen that after the airflow passes through the filter of this utility model, the difference between the minimum airflow velocity and the maximum airflow velocity is only about 2 times, and the airflow velocity distribution is more uniform.

[0085] In this embodiment, the filter screen 200 is manufactured using biomimetic weaving technology.

[0086] In some embodiments, the filter 200 may be manufactured using die casting or 3D printing technology.

[0087] Accordingly, this utility model also provides a filter assembly, including the aforementioned filter screen 200 and an accessory for accommodating and / or fixing the filter screen 200. The accessory is primarily used to fix the filter screen. The fixing method is not particularly limited.

[0088] In this embodiment, the filter screen 200 is planar.

[0089] In some embodiments, the filter screen 200 may also be cylindrical or spherical. Depending on the application scenario, the filter screen 200 can be designed in different shapes. Planar filter screens 200 are suitable for simple filtration needs; cylindrical and spherical filter screens 200 can better adapt to complex fluid flow environments, improving filtration efficiency and filtration effect.

[0090] In this embodiment, the filter screen 200 includes two or more layers stacked together, and the skeleton intersection points 201-2 of two adjacent layers of the filter screen 200 in the stacking direction at least partially overlap.

[0091] Of course, in some embodiments, the filter screens 200 are stacked in two or more layers, and the skeleton intersection points 201-2 of adjacent filter screens 200 in the stacking direction do not overlap. In this embodiment, the skeleton intersection points 202-1 of adjacent filter screens 200 in the stacking direction at least partially overlap.

[0092] In some embodiments, the radial intersection points 202-1 of two adjacent filter layers 200 in the stacking direction do not overlap.

[0093] In this embodiment, the filter media 203 attached to the skeleton wire 201-1 and the radial wire 202 of the two adjacent or non-adjacent layers of the filter screen 200 in the stacking direction are the same.

[0094] In some embodiments, the filter media 203 attached to the skeleton wires 201-1 and the radial wires 202 of two adjacent or non-adjacent filter screens 200 in the stacking direction are different from each other, thereby utilizing the characteristics of different filter media 203 to filter different pollutants and improve filtration efficiency.

[0095] In this embodiment, the two or more layers of filter screen 200 have filter media 203 attached to one side of the skeleton wire 201-1 and the radial wire 202, and the sides with the filter media 203 attached are arranged opposite each other. In some embodiments, the sides with the filter media 203 attached are arranged sequentially in the same direction.

[0096] In this embodiment, the thickness of the single-layer filter screen is 0.5-5.0 mm, preferably 1-4 mm, and more preferably 2-3 mm.

[0097] Accordingly, this utility model also provides a filter, including the above-mentioned filter components, which can be used for air purification or water purification, especially air purification.

[0098] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A filter screen, characterized in that, include: The mesh-like skeleton structure includes multiple skeleton intersections formed by the intersecting connection of skeleton wires; The radial wires are arranged around a portion of the skeleton intersections and sequentially connect adjacent skeleton wires at the portion of the skeleton intersections, forming skeleton radial intersections on the skeleton wires; Filter media attached to the skeleton filaments and / or the radial filaments.

2. The filter screen as described in claim 1, characterized in that, The mesh-like skeleton structure includes multiple skeleton intersections formed by the intersecting of different numbers of skeleton filaments.

3. The filter screen as described in claim 2, characterized in that, The mesh-like skeleton structure includes the skeleton intersections formed by 3-10 skeleton filaments.

4. The filter screen as described in claim 3, characterized in that, The spokes are arranged around all the skeleton intersections formed by 3-10 skeleton wires, and are sequentially connected to adjacent skeleton wires that form the skeleton intersections.

5. The filter screen as described in claim 4, characterized in that, The mesh-like skeleton structure includes the skeleton intersections formed by 3-5 skeleton filaments.

6. The filter screen as described in claim 1, characterized in that, In use, the radial wires connecting adjacent skeleton wires are arc-shaped.

7. The filter screen as described in claim 1, characterized in that, The included angles between adjacent skeleton wires forming the intersection of the skeleton are equal.

8. The filter screen as described in claim 1, characterized in that, The skeleton filaments have at least two radial intersections in the direction extending from the skeleton intersection.

9. The filter screen as described in claim 8, characterized in that, On the skeletal wire, the distance between the skeletal intersection point and its adjacent radial intersection point may be the same as or different from the distance between any two adjacent radial intersection points.

10. The filter screen as described in claim 9, characterized in that, On the skeleton wire, the distance between the skeleton intersection point and its adjacent radial intersection point, as well as the distance between any adjacent radial intersection points, increases or decreases from the skeleton intersection point in the direction extending along the skeleton wire.

11. The filter screen as described in claim 8, characterized in that, The distance between the intersection of the skeleton and its adjacent bone radial intersection, as well as the distance between any two adjacent bone radial intersections, shall not exceed 50 mm.

12. The filter screen as claimed in claim 1, characterized in that, Different radial wires arranged around adjacent skeletal intersections are connected to each other at at least one of the skeletal radial intersections.

13. The filter screen as described in claim 12, characterized in that, Different radial wires arranged around adjacent skeletal intersections are connected to each other at at least one radial intersection furthest from the skeletal intersection around which they are arranged.

14. The filter screen as claimed in claim 1, characterized in that, The filter medium is attached to the same side or both sides of the skeleton filament and the radial filament.

15. The filter screen as claimed in claim 1, characterized in that, The filter medium is made of activated carbon or diatomaceous earth.

16. The filter screen as claimed in claim 1, characterized in that, The skeleton wire and the radial wire are made of metal and / or resin materials.

17. The filter screen as claimed in claim 16, characterized in that, The skeleton filament and the radial filament are made of polypropylene, polycarbonate, polyamide, or acrylonitrile-butadiene-styrene polymer.

18. The filter screen as claimed in claim 17, characterized in that, The diameter of the skeleton wire and the spoke wire is 0.1mm-5.0mm.

19. The filter screen as described in any one of claims 1-18, characterized in that, At least some of the spokes are arranged in a spiral around the intersection of the skeleton.

20. The filter screen as described in any one of claims 1-18, characterized in that, The distance between different bone radial intersections formed by the same radial wire and the same skeletal intersection formed by skeletal wires that form different bone radial intersections differs by less than 20%.

21. A filter assembly, characterized in that, Includes a filter screen as described in any one of claims 1-20 and accessories for housing and / or fixing the filter screen.

22. The filter assembly as claimed in claim 21, characterized in that, The filter screen is planar, cylindrical, or spherical.

23. The filter assembly as claimed in claim 22, characterized in that, The filter includes two or more layers of the filter screen, and the intersection points of the skeletons of two adjacent layers of the filter screen in the stacking direction at least partially overlap or do not overlap.

24. The filter assembly as claimed in claim 23, characterized in that, The radial intersections of two adjacent filter layers in the stacking direction may at least partially overlap or not overlap at all.

25. A filter, characterized in that, Includes a filter screen as described in any one of claims 1 to 20 or a filter assembly as described in any one of claims 21 to 24.

Images