A filter device with nanometer silver ion activated carbon filter element

Abstract

The utility model relates to filter device technical field especially, more particularly to a kind of filter device with nano silver ion activated carbon filter element.A kind of filter device with nano silver ion activated carbon filter element, including the water delivery pipeline being provided with the butt joint of lower portion, the shell being screw-connected with the butt joint of top, the support frame being located in the shell and extending to the butt joint upwards and the filter element being located in the support frame, the shell bottom side is provided with water outlet.The utility model can effectively remove the impurities, heavy metals and bacteria and other harmful substances in water by setting multilayer filter cotton, while nano silver ion ball layer has good bacteriostatic effect, can avoid filter element to breed bacteria in use process, the cooperation design of limiting support and support frame not only ensures the stability of filter element, also facilitates user to install and replace, the thread connection mode of shell and butt joint makes the assembly of entire device more convenient, also enhances sealing performance, prevents the occurrence of water leakage phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a filtration device with a nano-silver ion activated carbon filter element. Background Technology

[0002] As people's demands for living standards increase, basic filtration of tap water is no longer sufficient to meet their needs. In daily household tap water use, secondary filtration devices are installed at the water pipes to filter out impurities such as sediment and rust that may be mixed in during the water transport process, making the water clearer and more transparent. At the same time, the water quality is softened and the taste of tap water is improved. However, in the existing technology, the process of replacing the filter cartridge in the filter device connected to the water pipe is relatively cumbersome and not conducive to convenient replacement. Utility Model Content

[0003] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a filtration device with a nano-silver ion activated carbon filter element. By setting multiple layers of filter cotton, it can effectively remove impurities, heavy metals, bacteria and other harmful substances from the water. At the same time, the nano-silver ion ball layer has a good antibacterial effect, which can prevent bacteria from growing in the filter element during use. The combination design of the limiting bracket and the support frame not only ensures the stability of the filter element, but also facilitates installation and replacement by the user. The threaded connection between the outer shell and the interface makes the assembly of the entire device more convenient, and also enhances the sealing performance to prevent water leakage.

[0005] This utility model provides a filtration device with a nano-silver ion activated carbon filter element, including a water supply pipe with a connector at the bottom, a shell screwed to the connector at the top, a support frame located inside the shell and extending upward into the connector, and a filter element located inside the support frame. The bottom side of the shell has a water outlet. The outer side of the connector has an external thread, and the top of the shell has a corresponding thread that is screwed to the external thread. The filter element includes multiple layers of filter cotton and a limiting bracket. The multiple layers of filter cotton are held in place inside the limiting bracket. The bottom side of the shell has an inwardly recessed first groove, and the bottom side of the limiting bracket abuts against the inwardly recessed first groove. The support frame is sleeved on the outside of the limiting bracket, and a gap is provided between the support frame and the inner wall of the shell. The bottom side of the limiting bracket has an annular water outlet.

[0006] The output water pipe supplies tap water to the filtration device through a connector located on the bottom side. This connector is screwed to the outer casing to fix the relative position of the entire filtration device and the water supply pipe. Inside the outer casing, a support frame and a filter element are fitted, with the support frame surrounding the filter element. Tap water exits through the connector and enters the cavity within the filter element. After being filtered, the water exits through the gap between the outer casing and the support frame, and then exits through the water outlet on the limiting base and the water outlet at the bottom of the outer casing, completing the entire filtration process. The connector connects to the outer casing on the outside and is internally threaded to the support frame, ensuring that the internal support frame remains fixed to the connector even when the outer casing is disassembled. The filter element inside is only restrained by the first groove on the outer shell. Therefore, when the outer shell is removed, the filter element falls out along with it, thus completing the filter element disassembly process. During installation, the filter element is inserted into the outer shell, restrained by the first groove, and the outer shell is rotated to screw onto the connector. The filter element is then inserted into the support frame to complete the replacement process. The entire disassembly and replacement process is simple and convenient. It can be understood that the diameter of the annular water outlet is smaller than the diameter of the first groove, ensuring that tap water can fall smoothly into the water outlet below. When the water flow from the spaced water outlets is small, the water outlets can be adjusted to two semi-circular symmetrical water channels to increase the flow rate.

[0007] In some embodiments, a mating ring extends outward from the top of the support frame. The mating ring has threads on its outer side, and the mating interface has internal threads on its inner side. The mating interface is screwed to the mating ring via the internal threads. The connection between the support frame and the mating interface is achieved through the mating ring and the threads. The diameter of the mating ring is larger than the diameter of the support frame itself, and it is used to mate with the mating interface, making the support frame detachable and replaceable.

[0008] In some embodiments, the limiting bracket includes a limiting base, a first limiting wire mesh, and a second limiting wire mesh. The first and second limiting wire meshes are perpendicular to the limiting base. The first limiting wire mesh is arranged around the limiting base, and the second limiting wire mesh is sleeved around the periphery of the first limiting wire mesh. A gap is provided between the first and second limiting wire meshes. When the outer shell is connected to the interface, the limiting base is engaged between the first groove and the support frame. The diameter of the limiting base is larger than the diameter of the support frame, so that when the outer shell is disassembled, the support frame can fall smoothly due to its heavier bottom. The first and second limiting wire meshes, perpendicular to the limiting base, extend upward into the support frame to fix the position of the multi-layer filter cotton. When the first limiting wire mesh is arranged around the support, an internal cavity is formed for the buffering of tap water.

[0009] In some embodiments, the wires in the first and second limiting wire meshes are vertically arranged wavy wires. The multi-layer filter cotton is arranged in a ring and secured in the gap between the first and second limiting wire meshes. The height of the multi-layer filter cotton is adapted to the height of the first and second limiting wire meshes. Both the first and second limiting wire meshes include two fixing rings arranged vertically and vertically, and wavy wires arranged at intervals in the middle. The fixing rings at the top and bottom provide a plastic effect to the wire mesh, and the vertically arranged wavy wires can fix the multi-layer filter cotton while facilitating its vertical insertion.

[0010] In some embodiments, the limiting chassis is further provided with several fixing posts extending upwards. These fixing posts are arranged in a ring between the first limiting wire mesh and the second limiting wire mesh, and the top of each fixing post is arc-shaped and inserted into the annular multi-layer filter cotton. To prevent the multi-layer filter cotton inserted between the first and second limiting wire mesh from shifting or rotating, annular fixing posts are provided at the bottom, which are inserted into the multi-layer filter cotton to limit its movement.

[0011] In some embodiments, the multi-layer filter cotton is sequentially arranged from the inside out as a porous diatomaceous earth layer, an activated carbon layer, a nano silver ion ball layer, and a high-precision PP cotton layer. The innermost porous diatomaceous earth layer comes into contact with tap water first. Its porous structure provides strong adsorption, filtering impurities and odors while also adsorbing harmful substances like heavy metal ions. The activated carbon layer adsorbs organic matter, chlorine, and heavy metals from the tap water, softening and improving water quality and transparency. The outermost high-precision PP cotton layer, while filtering, reduces water pressure through its high porosity, protecting subsequent filter cartridges from damage and extending the purifier's lifespan. Preferably, the high-precision PP cotton has a filtration accuracy of 1-50 microns. The nano-silver ion ball layer sandwiched between the high-precision PP cotton layer and the activated carbon layer disinfects and inhibits bacteria. Nano-silver ions have highly efficient bactericidal capabilities, inhibiting bacterial growth and effectively protecting the internal environment of the filter cartridge. Furthermore, the silver ion balls are uncharged and will not combine with various bioactive substances in the tap water to deposit, preventing the nano-silver ion ball layer from gradually thinning over long-term use.

[0012] In some embodiments, the limiting chassis further extends upward to provide a limiting ring, the diameter of which is larger than that of the second limiting wire mesh. The bottom end of the support frame is engaged between the limiting ring and the second limiting wire mesh. The limiting ring is used to limit the position of the support frame. While the support frame mates with the interface at the top, the bottom is limited by the limiting ring, which can fix the relative position between the outer shell, the support frame, and the filter element, ensuring that the filter element can be smoothly inserted into the support frame.

[0013] In some embodiments, the support frame has positioning rings arranged sequentially from top to bottom. The positioning rings have the same diameter and are connected in pairs by a fixing ridge. There are gaps between the sequentially arranged positioning rings so that the filtered tap water can flow out smoothly through the gaps. The positioning rings can limit the internal filter element and prevent it from shifting, while the fixing ridges are used to connect the positioning rings so that they become a whole.

[0014] By adopting the above technical solution, the beneficial effects of this utility model are:

[0015] This invention effectively removes impurities, heavy metals, bacteria, and other harmful substances from water by using multi-layered filter cotton. The nano-silver ion spheres also have excellent antibacterial properties, preventing bacterial growth during filter use. The combined design of the limiting bracket and support frame ensures the stability of the filter element and facilitates installation and replacement. The threaded connection between the outer shell and the interface makes assembly of the entire device more convenient and enhances sealing performance, preventing leakage.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0017] Undoubtedly, such and other objects of this invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and illustrations.

[0018] To make the above and other objects, features and advantages of this utility model more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further understand 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 and do not constitute a limitation thereof.

[0020] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the overall structure of the filtration device in some embodiments of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the filter device in some embodiments of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection structure between the support frame and the filter element in some embodiments of this utility model;

[0025] Figure 4 This is a schematic diagram of the multi-layer filter cotton structure in some embodiments of this utility model;

[0026] Figure 5 This is a cross-sectional schematic diagram of the overall structure of the filtration device in some embodiments of the present invention.

[0027] Explanation of key figure labels:

[0028] 1. Water supply pipeline;

[0029] 11. Interface;

[0030] 2. Outer shell;

[0031] 21. Water outlet; 22. First groove;

[0032] 3. Support frame;

[0033] 31. Docking ring; 32. Positioning ring; 33. Fixing ridge;

[0034] 4. Filter element;

[0035] 41. Multi-layer filter cotton;

[0036] 411. Porous diatomaceous earth layer; 412. Activated carbon layer; 413. Nano silver ion sphere layer; 414. High-precision PP cotton layer;

[0037] 42. Limiting bracket;

[0038] 421. Limiting chassis; 422. First limiting wire mesh; 423. Second limiting wire mesh; 424. Fixing post;

[0039] 425. Limiting ring; 426. Water outlet. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0041] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected through a transitional structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0043] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Reference Figure 1 and Figure 5 , Figure 1 This is a schematic diagram of the overall structure of the filtration device in some embodiments of the present invention; Figure 5 This is a cross-sectional schematic diagram of the overall structure of the filtration device in some embodiments of the present invention.

[0045] According to some embodiments of the present invention, the present invention provides a filtration device with a nano-silver ion activated carbon filter element, including a water supply pipe 1 with a connection interface 11 at the bottom, a shell 2 with its top screwed to the connection interface 11, a support frame 3 located inside the shell 2 and extending upward into the connection interface 11, and a filter element 4 located inside the support frame 3. The bottom side of the shell 2 is provided with a water outlet 21; the outer side of the connection interface 11 is provided with an external thread, and the top of the shell 2 is correspondingly provided with a thread and screwed to the external thread. The filter element 4 includes multiple layers of filter cotton 41 and a limiting bracket 42. The multiple layers of filter cotton 41 are clamped inside the limiting bracket 42. The bottom side of the shell 2 is provided with an inwardly recessed first groove 22, and the bottom side of the limiting bracket 42 abuts against the inwardly recessed first groove 22. The support frame 3 is sleeved on the outside of the limiting bracket 42, and a gap is provided between the support frame 3 and the inner wall of the shell 2. The bottom side of the limiting bracket 42 is provided with an annular water outlet hole 426.

[0046] The water outlet pipe delivers tap water to the filtration device through the interface 11 located on the bottom side. The interface 11 is screwed to the outer shell 2 to fix the relative position between the entire filtration device and the water supply pipe 1. The outer shell 2 houses a support frame 3 and a filter element 4, with the support frame 3 fitted around the filter element 4. After the tap water exits from the interface 11, it enters the cavity in the filter element 4. After being filtered by the filter element 4, the water is output into the gap between the outer shell 2 and the support frame 3, and then discharged through the water outlet 426 on the limiting base 421 and the water outlet 21 at the bottom of the outer shell 2, completing the entire filtration process. The interface 11 connects to the outer shell 2 on the outside and is internally threaded to the support frame 3, so that when the outer shell 2 is disassembled, the internal support frame 3 remains fixed to the interface 11, while the support frame 3 remains fixed to the support frame 3. The filter element 4 inside the support frame 3 is only restrained by the first groove 22 of the outer shell 2. Therefore, when the outer shell 2 is removed, the filter element 4 falls down together, realizing the disassembly process of the filter element 4. During the installation, the filter element 4 is inserted into the outer shell 2, the first groove 22 restrains it, the outer shell 2 is rotated and screwed into the interface 11, and the filter element 4 is inserted into the support frame 3 to complete the replacement process. The entire disassembly and replacement process is simple and convenient. It can be understood that the diameter of the annular water outlet 426 is smaller than the diameter of the first groove 22, ensuring that tap water can fall smoothly into the water outlet 21 below. When the water flow of the spaced water outlet 426 is small, the water outlet 426 can also be adjusted into two semi-circular symmetrical water outlet grooves to accelerate the flow rate.

[0047] The support frame 3 has a mating ring 31 extending outward from its top. The mating ring 31 has threads on its outer side, and the mating interface 11 has internal threads on its inner side. The mating interface 11 is screwed to the mating ring 31 through the internal threads. The connection between the support frame 3 and the mating interface 11 is achieved through the mating ring 31 and the threads. The diameter of the mating ring 31 is larger than the diameter of the support frame 3 itself, and it is used to mate with the mating interface 11, making the support frame 3 detachable and replaceable.

[0048] Reference Figure 2 , Figure 2 This is a schematic diagram of the internal structure of the filtration device in some embodiments of the present invention.

[0049] According to some embodiments of this utility model, optionally, the limiting chassis 421 further extends upward to provide a limiting ring 425. The diameter of the limiting ring 425 is larger than that of the second limiting wire mesh 423, and the bottom end of the support frame 3 is engaged between the limiting ring 425 and the second limiting wire mesh 423. The limiting ring 425 is used to limit the position of the support frame 3. While the support frame 3 is docked with the interface 11 at the top, the bottom is limited by the limiting ring 425, which can fix the relative position between the outer shell 2, the support frame 3 and the filter element 4, ensuring that the filter element 4 can be smoothly inserted into the support frame 3.

[0050] The support frame 3 has positioning rings 32 arranged sequentially from top to bottom. The positioning rings 32 have the same diameter and are connected to each other by a fixing ridge 33. There are gaps between the sequentially arranged positioning rings 32 so that the filtered tap water can flow out smoothly through the gaps. The positioning rings 32 can limit the internal filter element 4 to prevent it from shifting, while the fixing ridges 33 are used to connect the limiting rings 425 to make them a whole.

[0051] Reference Figure 3-4 , Figure 3 This is a schematic diagram of the connection structure between the support frame and the filter element in some embodiments of this utility model; Figure 4 This is a schematic diagram of the multi-layer filter cotton structure in some embodiments of this utility model.

[0052] According to some embodiments of the present invention, optionally, the limiting bracket 42 includes a limiting base 421, a first limiting wire mesh 422, and a second limiting wire mesh 423. The first limiting wire mesh 422 and the second limiting wire mesh 423 are perpendicular to the limiting base 421. The first limiting wire mesh 422 is arranged around the limiting base 421, and the second limiting wire mesh 423 is sleeved around the periphery of the first limiting wire mesh. A gap is provided between the first limiting wire mesh 422 and the second limiting wire mesh 423. When the outer shell 2 is connected to the interface 11, the limiting base 421 is locked between the first groove 22 and the support frame 3, and the diameter of the limiting base 421 is larger than the diameter of the support frame 3, so that when the outer shell 2 is disassembled, the support frame 3 can fall smoothly due to its heavier bottom. The first limiting wire mesh 422 and the second limiting wire mesh 423, which are perpendicular to the limiting base 421, extend upward into the support frame 3 to fix the position of the multi-layer filter cotton 41. When the first limiting wire mesh 422 surrounds, a cavity is formed inside to buffer the tap water.

[0053] The wires in the first limiting wire mesh 422 and the second limiting wire mesh 423 are vertically arranged wavy wires. The multi-layer filter cotton 41 is arranged in a ring and is secured in the gap between the first limiting wire mesh 422 and the second limiting wire mesh 423. The height of the multi-layer filter cotton 41 is adapted to the height of the first limiting wire mesh 422 and the second limiting wire mesh 423. Both the first limiting wire mesh 422 and the second limiting wire mesh 423 include two fixing rings arranged vertically and vertically, as well as wavy wires arranged vertically in the middle. The fixing rings at the top and bottom provide plasticity to the wire mesh, and the vertically arranged wavy wires can fix the multi-layer filter cotton 41 while facilitating its vertical insertion.

[0054] Several fixing posts 424 extend upward from the limiting chassis 421. These fixing posts 424 are arranged in a ring between the first limiting wire mesh 422 and the second limiting wire mesh 423. The top of each fixing post 424 is arc-shaped and inserts into the annular multi-layer filter cotton 41. To prevent the multi-layer filter cotton 41 inserted between the first and second limiting wire mesh 422 and the second limiting wire mesh 423 from shifting or rotating, the fixing posts 424 are arranged in a ring around the bottom. The fixing posts 424 are inserted into the multi-layer filter cotton 41 and limit its movement.

[0055] The multi-layer filter cotton 41 is arranged from the inside out as follows: a porous diatomaceous earth layer 411, an activated carbon layer 412, a nano silver ion ball layer 413, and a high-precision PP cotton layer 414. The innermost porous diatomaceous earth layer 411 is the first to come into contact with tap water. Its porous structure provides strong adsorption, filtering impurities and odors while also adsorbing harmful substances like heavy metal ions. The activated carbon layer 412 adsorbs organic matter, chlorine, and heavy metals from the tap water, softening and improving water quality and transparency. The outermost high-precision PP cotton layer 414, while filtering, reduces water pressure through its high porosity, protecting subsequent filter cartridges from damage and extending the water purifier's lifespan. Preferably, the high-precision PP cotton has a filtration accuracy of 1-50 microns. The nano-silver ion ball layer 413, sandwiched between the high-precision PP cotton layer 414 and the activated carbon layer 412, disinfects and antibacterially. The nano-silver ions have highly efficient bactericidal capabilities, inhibiting bacterial growth and effectively protecting the internal environment of the filter cartridge 4. Furthermore, the silver ion balls are uncharged and will not combine with various bioactive substances in the tap water to deposit, preventing the nano-silver ion ball layer 413 from gradually thinning over long-term use.

[0056] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0057] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the present invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0058] Furthermore, the described features or characteristics may be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented without the aforementioned one or more specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A filtration device with a nano-silver ion activated carbon filter element, characterized in that, include The water supply pipeline has a connection point at its bottom; The outer casing has its top screwed to the interface, and a water outlet is provided on the bottom side of the outer casing. A support frame, which is located inside the housing and extends upward into the interface; The filter element is located within the support frame; The outer side of the interface is provided with an external thread, and the top of the outer shell is provided with a corresponding thread and screwed into the external thread. The filter element includes multiple layers of filter cotton and a limiting bracket. The multiple layers of filter cotton are clamped in the limiting bracket. The bottom side of the outer shell is provided with an inwardly recessed first groove. The bottom side of the limiting bracket abuts against the inwardly recessed first groove. The support frame is sleeved on the outside of the limiting bracket. A gap is provided between the support frame and the inner wall of the outer shell. The bottom side of the limiting bracket is provided with a water outlet hole in an annular shape.

2. The filtration device with a nano-silver ion activated carbon filter element according to claim 1, characterized in that, The support frame has a mating ring extending outward from the top. The mating ring has threads on its outer side and internal threads on its inner side. The mating ring is screwed to the mating ring through the internal threads.

3. The filtration device with a nano-silver ion activated carbon filter element according to claim 1, characterized in that, The limiting bracket includes a limiting base, a first limiting wire mesh, and a second limiting wire mesh. The first limiting wire mesh and the second limiting wire mesh are perpendicular to the limiting base. The first limiting wire mesh is arranged around the limiting base, and the second limiting wire mesh is sleeved around the periphery of the first limiting wire mesh. A gap is provided between the first limiting wire mesh and the second limiting wire mesh.

4. The filtration device with a nano-silver ion activated carbon filter element according to claim 3, characterized in that, The wires in the first and second limiting wire meshes are vertically arranged wavy wires. The multi-layer filter cotton is arranged in a ring and is inserted into the gap between the first and second limiting wire meshes. The height of the multi-layer filter cotton is adapted to the height of the first and second limiting wire meshes.

5. The filtration device with a nano-silver ion activated carbon filter element according to claim 3, characterized in that, Several fixing posts are also provided on the limiting chassis extending upwards. The fixing posts are arranged in a ring between the first limiting wire mesh and the second limiting wire mesh. The top of the fixing post is arc-shaped and inserted into the ring-shaped multi-layer filter cotton.

6. The filtration device with a nano-silver ion activated carbon filter element according to claim 1, characterized in that, The multi-layered filter cotton consists of a porous diatomaceous earth layer, an activated carbon layer, a nano silver ion ball layer, and a high-precision PP cotton layer, arranged sequentially from the inside out.

7. The filtration device with a nano-silver ion activated carbon filter element according to claim 3, characterized in that, The limiting chassis also extends upward to provide a limiting ring, the diameter of which is larger than that of the second limiting wire mesh, and the bottom end of the support frame is locked between the limiting ring and the second limiting wire mesh.

8. The filtration device with a nano-silver ion activated carbon filter element according to claim 1, characterized in that, The support frame has positioning rings arranged sequentially from top to bottom. The positioning rings have the same diameter and are connected by a fixed ridge between each pair.

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