Filter element with interlayer carbon fiber filter body, filter cartridge and mineral spring water purifier

Abstract

The utility model is suitable for the technical field of mineralized water purification, and discloses a filter element with an interlayer carbon fiber filter body, a filter cartridge and a mineral spring water purifier. The filter element comprises a filter element main body; the filter element main body comprises an outer side filter body, an interlayer carbon fiber filter body and an inner side filter body which are arranged in a split manner; the outer side filter body is cylindrical, the interlayer carbon fiber filter body is cylindrical, the inner side filter body is cylindrical or columnar, the outer side filter body is sleeved on the outer side of the interlayer carbon fiber filter body, and the interlayer carbon fiber filter body is sleeved on the outer side of the inner side filter body; the interlayer carbon fiber filter body comprises a carbon fiber filter layer wound into a barrel shape, the carbon fiber filter material is clamped between the outer filter body and the inner filter body, the outer filter body and the inner filter body have a supporting effect on the carbon fiber filter material, the carbon fiber filter material is small in overflowing resistance and good in filtering effect, and the carbon fiber filter material is not prone to deformation and cracking after being used for a long time and is beneficial to application and popularization.

Description

Technical Field

[0001] This utility model relates to the field of mineralized water purification technology, and in particular to a filter element, filter cartridge, and mineral water purifier with a sandwiched carbon fiber filter body. Background Technology

[0002] Traditional household water purifiers primarily use conventional filter cartridges. After activated carbon adsorption, reverse osmosis filtration is applied to obtain purified water suitable for direct drinking. This is currently the most common filtration method used in household water purifiers on the market. Based on the working mechanism of reverse osmosis, it intercepts and filters all substances except water molecules. This means that while removing contaminants from the water, it also filters out beneficial minerals, which can be detrimental to health in the long run. Current carbon fiber filter media offer lower flow resistance and better filtration, but they are relatively soft and prone to deformation and cracking under prolonged use, hindering their widespread application. Utility Model Content

[0003] To address the issue of mineral content in drinking water, this invention provides a filter element, filter cartridge, and mineral water purifier with a sandwiched carbon fiber filter body. This design meets the high-end demand for health-enhancing drinking water equipment. The carbon fiber filter material, sandwiched between the outer and inner filter bodies, exhibits low flow resistance and excellent filtration. Furthermore, the carbon fiber filter material is resistant to deformation and cracking over long-term use, facilitating its widespread application. In addition to securing the carbon fiber filter material, the outer and inner filter bodies also filter the water flow, resulting in superior filtration performance.

[0004] This utility model provides a filter element, including a filter element body. The filter element body includes an outer filter body, a sandwiched carbon fiber filter body, and an inner filter body, which are separately arranged. The outer filter body is cylindrical, the sandwiched carbon fiber filter body is cylindrical, and the inner filter body is cylindrical or columnar. The outer filter body is sleeved on the outside of the sandwiched carbon fiber filter body, and the sandwiched carbon fiber filter body is sleeved on the outside of the inner filter body. The sandwiched carbon fiber filter body includes a carbon fiber filter layer wound into a cylindrical shape, and the carbon fiber filter layer is sandwiched between the outer filter body and the inner filter body.

[0005] Optionally, the surface of the carbon fiber filter layer is provided with a mineralization layer, or the surface of the carbon fiber filter layer is provided with at least two mineralization layers, and each mineralization layer is alternately arranged along a predetermined direction of the carbon fiber filter layer.

[0006] Optionally, a first mineralization filter layer is provided on one side of the carbon fiber filter layer, and a second mineralization filter layer is provided on the other side of the carbon fiber filter layer.

[0007] Optionally, the filter element body is cylindrical or cylindrical in shape, and the filter element further includes a first end cap and a second end cap, wherein the first end cap is connected to one end of the filter element body and the second end cap is connected to the other end of the filter element body.

[0008] Optionally, the outer filter body includes a substrate, which is a carbon rod filter element, a ceramic filter element, or granular carbon.

[0009] Optionally, the sandwiched carbon fiber filter body includes a substrate, which is a carbon rod filter element, a ceramic filter element, or granular carbon.

[0010] Optionally, a first water-proof pipe is provided between the outer filter body and the sandwiched carbon fiber filter body; a second water-proof pipe is provided between the sandwiched carbon fiber filter body and the inner filter body.

[0011] Optionally, the outer filter body has a mineralized filter material that can dissolve minerals, and the sandwiched carbon fiber filter body and / or the inner filter body has a filter material that promotes the dissolution of minerals from the mineralized filter material.

[0012] Alternatively, the outer filter body has a mineralized filter material that can dissolve minerals, and the sandwiched carbon fiber filter body and / or the inner filter body has an anti-antagonistic filter material that can inhibit the dissolution of minerals from the mineralized filter material.

[0013] Alternatively, the outer filter body has mineralized filter media for adjusting the pH value of the water, and the sandwiched carbon fiber filter body and / or the inner filter body has neutralizing filter media for neutralizing the pH value of the water;

[0014] Alternatively, the outer filter body has a first mineralized filter material capable of dissolving a first mineral, the sandwiched carbon fiber filter body has a second mineralized filter material capable of dissolving a second mineral, and the inner filter body has a third mineralized filter material capable of dissolving a third mineral. This utility model also provides a filter cartridge, including a shell and the aforementioned filter element, wherein the filter element is disposed within the shell.

[0015] The filter cartridge is provided with a series water path, which passes through the outer filter body, the sandwiched carbon fiber filter body and the inner filter body in sequence; or, the filter cartridge is provided with a parallel water path, which passes through the outer filter body, the sandwiched carbon fiber filter body and the inner filter body respectively.

[0016] This utility model also provides a mineral water purifier, which includes the above-mentioned filter element, or the mineral water purifier includes the above-mentioned filter cartridge.

[0017] This utility model provides a filter element, filter cartridge, and mineral water purifier with a sandwiched carbon fiber filter body. The filter element body includes a filter element main body comprising a separate outer filter body, a sandwiched carbon fiber filter body, and an inner filter body. The outer filter body and the sandwiched carbon fiber filter body are cylindrical, while the inner filter body is cylindrical or columnar. The outer filter body is fitted over the outer side of the sandwiched carbon fiber filter body, and the sandwiched carbon fiber filter body is fitted over the outer side of the inner filter body. The sandwiched carbon fiber filter body includes a carbon fiber filter layer wound into a cylindrical shape, which is beneficial for meeting people's high-end demand for health-friendly drinking water equipment. The carbon fiber filter media is sandwiched between the outer and inner filter bodies, which support the carbon fiber filter media. The carbon fiber filter media has low flow resistance, good filtration effect, and is not easily deformed or cracked under long-term use, which is conducive to its widespread application. In addition to securing the carbon fiber filter media, the outer and inner filter bodies can also filter the water flow, resulting in good filtration effect. Moreover, by setting a mineralized carbon fiber filter layer, that is, setting a mineralized material layer on the surface of the carbon fiber filter layer, it has both the function of dissolving minerals and the function of filtration, which helps to meet people's high-end demand for drinking water equipment that is beneficial to health. Attached Figure Description

[0018] Figure 1 A cross-sectional view of a filter element provided in an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the raw materials for a carbon fiber filter layer in a filter element provided in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram showing the arrangement of the first mineralized filter layer and the second mineralized filter layer on the carbon fiber filter layer provided in this embodiment of the utility model.

[0021] Figure 4 This is a schematic diagram showing another arrangement of the first mineralized filter layer and the second mineralized filter layer on the carbon fiber filter layer provided in this embodiment of the present invention.

[0022] Figure 5 A schematic diagram of the water circuit (parallel water circuit) of a filter cartridge provided for an embodiment of this utility model;

[0023] Figure 6 A schematic diagram of the water circuit (series water circuit) of a filter cartridge provided for an embodiment of this utility model;

[0024] Figure 7 This is a three-dimensional cross-sectional view of a filter cartridge provided in an embodiment of the present utility model. Detailed Implementation

[0025] 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 the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] It should be noted that the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to direct setup or connection, or indirect setup or connection through centered components or centered structures.

[0027] Furthermore, in embodiments of this utility model, terms such as "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, or in a conventional placement or usage state. These terms are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure, feature, device, or element referred to must have a specific orientation or positional relationship, nor that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0028] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the various specific technical features / embodiments in this utility model will not be described separately.

[0029] This utility model provides a filter element, such as Figure 1 Figure 2 as well as Figure 7As shown, the filter element includes a main body, which comprises at least an outer filter element 110, a sandwiched carbon fiber filter element 120, and an inner filter element 30. The outer filter element 110, the sandwiched carbon fiber filter element 120, and the inner filter element 30 are separately arranged. The outer filter element 110 is cylindrical, the sandwiched carbon fiber filter element 120 is cylindrical, and the inner filter element 30 is cylindrical or columnar. The outer filter element 110 is disposed outside the sandwiched carbon fiber filter element 120; the sandwiched carbon fiber filter element 120 is disposed inside the outer filter element 110; the outer filter element 110 is sleeved on the outside of the sandwiched carbon fiber filter element 120, and the sandwiched carbon fiber filter element 120 is sleeved on the outside of the inner filter element 30; the sandwiched carbon fiber filter element 120 includes a carbon fiber filter layer wound into a cylindrical shape, which is sandwiched between the outer filter element 110 and the inner filter element 30. The sandwiched carbon fiber filter body 120 is a carbon fiber filter layer wound into a cylindrical shape, which is conducive to meeting people's high-end demand for drinking water equipment that is beneficial to health. The carbon fiber filter body 120 is sandwiched between the outer filter body 110 and the inner filter body 130. It has low flow resistance, good filtration effect, and is not easy to deform or crack under long-term use, which is conducive to its widespread application. In addition to clamping the carbon fiber filter material, the outer filter body 110 and the inner filter body 130 can also filter the water flow, with good filtration effect.

[0030] Specifically, such as Figure 2 As shown, the raw material of the carbon fiber filter layer 110a can be in roll form, and the surface of the carbon fiber filter layer 110a is provided with at least two mineralization layers, each of which is alternately arranged along a predetermined direction of the carbon fiber filter layer 110a. Figure 3 As shown, the two mineralization layers can be a first mineralization filter layer 151 and a second mineralization filter layer 152, respectively. The first mineralization filter layer 151 and the second mineralization filter layer 152 are alternately arranged along the length direction of the carbon fiber filter layer 110a. After the carbon fiber filter layer 110a is wound into a cylindrical shape, the first mineralization filter layer 151 and the second mineralization filter layer 152 are arranged radially inward and outward. Figure 4As shown, the two mineralization layers can be a first mineralization filter layer 151 and a second mineralization filter layer 152. The first mineralization filter layer 151 and the second mineralization filter layer 152 are arranged adjacent to each other along the width direction of the carbon fiber filter layer 110a. After the carbon fiber filter layer 110a is wound into a cylindrical shape, the first mineralization filter layer 151 and the second mineralization filter layer 152 are arranged vertically along the axial direction. The carbon fiber filter layer possesses the inherent properties of carbon materials and also has the softness and processability of textile fibers. More than 80% of the carbon atoms in the carbon fiber filter element are located on the inner and outer surfaces, forming a unique adsorption and filtration structure, referred to as surface solids. Moreover, by setting a mineralized carbon fiber filter layer, that is, setting a mineralized material layer on the surface of the carbon fiber filter layer, it has both the function of dissolving minerals and the function of filtration, which is conducive to meeting people's high-end demand for drinking water equipment that is beneficial to health. Furthermore, the carbon fiber filter layer is sandwiched between the outer filter body 110 and the inner filter body 130, resulting in excellent structural reliability.

[0031] Alternatively, in some embodiments, mineralization layers may be provided on both sides of the carbon fiber filter layer 110a. For example, a first mineralization filter layer 151 may be provided on one side of the carbon fiber filter layer 110a, and a second mineralization filter layer 152 may be provided on the other side. As another example, a first mineralization filter layer 151 and a second mineralization filter layer 152 may be provided on one side of the carbon fiber filter layer 110a, and a third and a fourth mineralization layer may be provided on the other side.

[0032] In some embodiments, the first mineralized filter layer 151 may be an acidic filter material, and the second mineralized filter layer 152 may be a calcium- and / or magnesium-containing mineralized filter material. In some embodiments, the first mineralized filter layer 151 may be a mineralized filter material that can dissolve minerals, and the second mineralized filter layer 152 may be a filter material that promotes the dissolution of minerals from the mineralized filter material.

[0033] Specifically, the sandwiched carbon fiber filter body 120 (a carbon fiber filter layer wound into a cylindrical shape) can be fitted inside the substrate of the outer filter body 110. Water can flow radially through the outer filter body 110 and the sandwiched carbon fiber filter body 120 respectively, and the outer filter body 110 and the sandwiched carbon fiber filter body 120 can be connected in series. In some embodiments, a first water-separating pipe can be provided between the outer filter body 110 and the sandwiched carbon fiber filter body 120, and a second water-separating pipe can be provided between the sandwiched carbon fiber filter body 120 and the inner filter body 130. The three parallel water flows can flow axially through the outer filter body 110, the sandwiched carbon fiber filter body 120, and the inner filter body 130 respectively, and the outer filter body 110, the sandwiched carbon fiber filter body 120, and the inner filter body 130 can be connected in parallel.

[0034] The outer filter element 110, the sandwiched carbon fiber filter element 120, and the inner filter element 130 are arranged radially separately, making assembly convenient and allowing for flexible assembly as needed during production. By setting at least three different outer filter elements 110, sandwiched carbon fiber filter elements 120, and inner filter elements 130, different usage requirements can be met, ensuring that the water contains mineral components beneficial to human health, thus satisfying users' high-end demand for health-promoting drinking water.

[0035] Specifically, the outer filter element 110 and the inner filter element 130 can be carbon rod filter elements or ceramic filter elements, which have high structural strength and can well clamp and support the interlayer carbon fiber filter element 120. The carbon rod filter element or ceramic filter element can be coated with a mineralized material layer.

[0036] Specifically, the outer filter body 110, the sandwiched carbon fiber filter body 120, and the inner filter body 130 can be connected in series, such as... Figure 1 As shown in the figure, taking the direction of the arrow as an example, the water flows radially through the outer filter body 110, the sandwiched carbon fiber filter body 120, and the inner filter body 130 in sequence. Of course, the water can also enter from the center and flow radially through the inner filter body 130, the sandwiched carbon fiber filter body 120, and the outer filter body 110 in sequence.

[0037] In practical applications, the first mineralization filter layer 151 and the second mineralization filter layer 152 of the sandwich carbon fiber filter body 120 can dissolve different minerals respectively. The first mineralization filter layer 151 can dissolve zinc, and the second mineralization filter layer 152 can be a weakly alkaline filter material. When water flows normally through the first mineralization filter layer 151 and the second mineralization filter layer 152, zinc can dissolve normally. However, when the water flow stops and the filter element is in an immersion state, if the immersion water is conventional pure water (water filtered through an RO membrane), the amount of zinc dissolved within a certain period of time will exceed the national standard safety limit, which is detrimental to human health. In this embodiment, by setting the second mineralization filter layer 152 to be a weakly alkaline filter material, the immersion water can be made weakly alkaline, thereby inhibiting the excessive dissolution of zinc in the first mineralization filter layer 151, and ensuring that the zinc concentration in the immersion water also meets the national standard. This allows zinc to dissolve normally during flow and overcomes the technical difficulty of zinc-containing filter materials easily causing excessive zinc levels during immersion.

[0038] In some embodiments, the outer filter body 110, the sandwiched carbon fiber filter body 120, and the inner filter body 130 can dissolve different minerals. Specifically, the outer filter body 110 can dissolve zinc (the outer filter body 110 is a zinc-containing filter body), the sandwiched carbon fiber filter body 120 can be a weakly alkaline filter body (i.e., the first mineralized filter layer and / or the second mineralized filter layer is an alkaline ore), and the inner filter body 130 can be a metasilicic acid filter material. Of course, the inner filter body 130 can also be a pure carbon filter material for odor adsorption. The outer filter body 110 and the inner filter body 130 can be filter bodies with a certain strength, such as carbon rods or ceramic rods.

[0039] Specifically, as a first optional combination scheme for the mineralization filter element, the sandwiched carbon fiber filter body 120 is a mineralization filter material capable of dissolving minerals, the outer filter body 110 is a promoting filter material for facilitating the dissolution of minerals in the mineralization filter material, and the inner filter body 130 can be a metasilicic acid filter material. Of course, the inner filter body 130 can also be a pure carbon filter material. The water in the filter element can first pass through the promoting filter material and then through the mineralization filter material, promoting the dissolution of minerals in the mineralization filter material. This can meet the needs of users with high-flow-rate water use; that is, even at high flow rates, the mineral content can still meet national or industry standards, avoiding insufficient mineral dissolution leading to low mineral content. In specific applications, the promoting filter material can also be selectively connected in series upstream of the mineralization filter material.

[0040] In practical applications, water can flow sequentially through the outer filter body 110, the sandwiched carbon fiber filter body 120, and the inner filter body 130. The sandwiched carbon fiber filter body 120 is a mineralized filter material containing calcium and / or magnesium, while the outer filter body 110 is an acidic filter material. The outer filter body 110 includes weakly acidic ores, and the sandwiched carbon fiber filter body 120 includes ores rich in calcium and magnesium. The acidic substances dissolved from the outer filter body 110 can promote the dissolution of calcium and magnesium elements from the sandwiched carbon fiber filter body 120.

[0041] Alternatively, as a second optional combination of mineralized filter elements, the outer filter body 110 is a mineralized filter material that can dissolve minerals, and the sandwiched carbon fiber filter body 120 or the inner filter body 130 is an anti-antagonistic filter material that can inhibit the dissolution of minerals from the mineralized filter material. That is, the sandwiched carbon fiber filter body 120 can dissolve anti-antagonistic substances, and the anti-antagonistic substances can inhibit the dissolution of minerals in the outer filter body 110 to prevent the corresponding minerals from exceeding the standard.

[0042] Alternatively, as a third optional combination of mineralized filter elements, the outer filter body 110 is a mineralized filter material used to adjust the pH value of the water, and the sandwiched carbon fiber filter body 120 or the inner filter body 130 is a neutralizing filter material used to neutralize the pH value of the water. The outer filter body 110, sandwiched carbon fiber filter body 120, and inner filter body 130 can be connected in parallel in the water circuit. By adjusting the water flow of the outer filter body 110, sandwiched carbon fiber filter body 120, and inner filter body 130 respectively, the pH value of the overall effluent can be stabilized within a set pH range (generally 7.0 to 9.0). The inner filter body 130 can also be a pure carbon filter material, used to adsorb impurities and remove odors, as well as adjust the pH range of the effluent.

[0043] This utility model embodiment also provides a filter cartridge, such as Figures 1 to 7As shown, the system includes a housing 210 and the aforementioned filter element (mineralized filter element), which is disposed within the housing 210. The housing 210 is provided with a filter element inlet and a filter element outlet. The filter element inlet is used to connect to the filter element inlet pipe 310. The filter element outlet is used to connect to the filter element outlet pipe 320.

[0044] In specific applications, the outer filter element 110 in the filter element (mineralized filter element) includes at least one of magnesia and sepiolite; the mineralized layer of the interlayer carbon fiber filter element 120 includes at least one of calcite and magnesia.

[0045] Alternatively, the outer filter 110 may include at least one of smithsonite and malachite; the mineralized layer of the interlayer carbon fiber filter 120 may include at least one of brucite, sepiolite, and calcite.

[0046] Alternatively, the outer filter 110 may include at least one of amphibole, magnesium ore, and dolomite; and the mineralized layer of the interlayer carbon fiber filter 120 may include at least one of brucite, sepiolite, and calcite.

[0047] Alternatively, the outer filter 110 may include at least one of amphibole, magnesium ore, and dolomite; and the mineralized layer of the interlayer carbon fiber filter 120 may include at least one of iron ore and silicate ore.

[0048] Specifically, the filter element further includes a first end cap 221 and a second end cap 222, wherein the first end cap 221 is connected to one end of the filter element body and the second end cap 222 is connected to the other end of the filter element body.

[0049] Specifically, the shell 210 may be provided with a series water passage structure for water to flow sequentially through the outer filter body 110, the sandwiched carbon fiber filter body 120 and the inner filter body 130. In specific applications, the series water passage structure can enter the filter cylinder from the bottom of the shell 210, flow upward along the inner side of the filter cylinder and then flow radially through the outer filter body 110, the sandwiched carbon fiber filter body 120 and the inner filter body 130 before flowing out from the filter cylinder outlet to the filter cylinder outlet pipe 320.

[0050] Alternatively, the shell 210 may be provided with a parallel water circuit structure for water to flow through the outer filter body 110, the interlayer carbon fiber filter body 120, and the inner filter body 130 respectively, in order to meet the needs of different scenarios.

[0051] This utility model also provides a mineral water purifier, which includes the above-mentioned filter element, or the mineral water purifier includes the above-mentioned filter cartridge. The sandwiched carbon fiber filter body 120 includes a carbon fiber filter layer wound into a cylindrical shape. The carbon fiber filter layer is sandwiched between the outer filter body 110 and the inner filter body 130. The carbon fiber filter layer has the inherent properties of carbon materials and also has the softness and processability of textile fibers. More than 80% of the carbon atoms in the carbon fiber filter element are located on the inner and outer surfaces, forming a unique adsorption filtration structure, which is called a surface solid. Moreover, by setting a mineralized carbon fiber filter layer, that is, setting a mineralized material layer on the surface of the carbon fiber filter layer, it has both the function of dissolving minerals and the function of filtration. The outer filter body 110 and the inner filter body 130 provide support for the sandwiched carbon fiber filter material. Under long-term use, the carbon fiber filter material is not easy to deform or crack, which is conducive to its widespread application and can meet people's high-end demand for drinking water equipment that is beneficial to health.

[0052] In practical applications, mineralizing filter cartridges can be used in conjunction with conventional filter cartridges (such as RO membrane filter cartridges). That is, the mineralizing filter cartridge can be placed downstream of the filter cartridge. The pure water formed by the filter cartridge passes through the mineralizing filter cartridge, and the mineralizing filter cartridge can dissolve an appropriate amount of minerals in the water, so that the drinking water supplied to users has an appropriate amount of minerals, which is beneficial to the health of users.

[0053] In practical applications, a mineral water purifier can be equipped with one or at least two of the above-mentioned filter cartridges. When there are two or more filter cartridges, at least two filter cartridges can be connected in series or in parallel. In practical applications, the above-mentioned filter cartridges (mineralized filter elements) can be connected in parallel with non-mineralized filter elements or pure water circuits. The parallel water circuits can be equipped with flow valves to adjust the mineral content / pH value of the effluent within a set range.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filter cartridge having a sandwiched carbon fiber filter element, characterized by, The filter core body comprises an outer filter body, a sandwiched carbon fiber filter body and an inner filter body; the outer filter body is in a cylindrical shape, the sandwiched carbon fiber filter body is in a cylindrical shape, and the inner filter body is in a cylindrical or columnar shape; the outer filter body is sleeved on the outer side of the sandwiched carbon fiber filter body, and the sandwiched carbon fiber filter body is sleeved on the outer side of the inner filter body; the sandwiched carbon fiber filter body comprises a carbon fiber filter layer wound in a cylindrical shape, and the carbon fiber filter layer is sandwiched between the outer filter body and the inner filter body.

2. The filter cartridge of claim 1 wherein, The surface of the carbon fiber filter layer is provided with a mineralization layer, or the surface of the carbon fiber filter layer is provided with at least two mineralization layers, and each mineralization layer is arranged alternately along a certain direction of the carbon fiber filter layer.

3. The filter cartridge of claim 1 wherein, One side of the carbon fiber filter layer is provided with a first mineralization filter layer, and the other side of the carbon fiber filter layer is provided with a second mineralization filter layer.

4. The filter cartridge of claim 1 wherein, The filter core body is in a cylindrical or columnar shape, and the filter core further comprises a first end cover and a second end cover; the first end cover is connected to one end of the filter core body, and the second end cover is connected to the other end of the filter core body.

5. The filter cartridge of claim 1 wherein, The outer filter body comprises a base material, which is a carbon rod filter core, a ceramic filter core or granular carbon.

6. The filter cartridge of claim 5 wherein, The sandwiched carbon fiber filter body comprises a base material, which is a carbon rod filter core, a ceramic filter core or granular carbon.

7. The filter cartridge of claim 1 wherein, First water pipes are arranged between the outer filter body and the sandwiched carbon fiber filter body, and second water pipes are arranged between the sandwiched carbon fiber filter body and the inner filter body.

8. The filter cartridge of any one of claims 1-7, wherein, The outer filter body has a mineralization filter material capable of dissolving minerals, and the sandwiched carbon fiber filter body and / or the inner filter body has a promoting filter material for promoting the mineralization filter material to dissolve minerals. Alternatively, the outer filter body has a mineralization filter material capable of dissolving minerals, and the sandwiched carbon fiber filter body and / or the inner filter body has an anti-antagonistic filter material for inhibiting the mineralization filter material from dissolving minerals. Alternatively, the outer filter body has a mineralization filter material for adjusting the PH value of water, and the sandwiched carbon fiber filter body and / or the inner filter body has a neutralization filter material for neutralizing the PH value of water. Alternatively, the outer filter body has a first mineralization filter material capable of dissolving a first mineral, the sandwiched carbon fiber filter body has a second mineralization filter material capable of dissolving a second mineral, and the inner filter body has a third mineralization filter material capable of dissolving a third mineral.

9. A filter cartridge characterized by, The filter cartridge is provided with a series water path, which passes through the outer filter body, the sandwiched carbon fiber filter body and the inner filter body in sequence; or the filter cartridge is provided with a parallel water path, which respectively passes through the outer filter body, the sandwiched carbon fiber filter body and the inner filter body. The mineral spring water purifier comprises the filter core according to any one of claims 1 to 8, or the mineral spring water purifier comprises the filter cartridge according to claim 9.

10. A mineral water purifier, characterized by, ​

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