Filter element, 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, a filter cartridge and a mineral spring water purifier. The filter element comprises a first filter body and a second filter body, and the first filter body or / and the second filter body are mineralized filter bodies; the second filter body is cylindrical or columnar, and the first filter body is arranged on the outer side of the second filter body; the first filter body comprises a water permeable piece and granular carbon, the water permeable piece is provided with a filling cavity, or a filling cavity is formed between the water permeable piece and the second filter body, and the filling cavity is filled with the granular carbon. The filter cartridge comprises a cartridge shell and the filter element, and the filter element is arranged in the cartridge shell. The mineral spring water purifier comprises the filter element or the filter cartridge. The water path can sequentially pass through the first filter body and the second filter body, or the water path can respectively pass through the first filter body and the second filter body, so that different use requirements are met, the water body contains mineral components beneficial to human health, and the high-end requirement of a user for drinking water beneficial to health is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to mineralization water purification technical field especially relates to a filter core, filter drum and mineral spring water purifier. BACKGROUND

[0002] At present, the mineralization filter core on market mostly adopts the whole sintering mode to form, and when water flow passes, contact with the material of mineralization filter core is not enough, especially in the early stage, the porosity of mineralization filter core is less, and the dissolution of mineralization substance is not enough, which leads to the mineral substance concentration in mineralization water cannot reach the relevant standard requirement. SUMMARY

[0003] In order to solve the problem of mineral substance content of drinking water, the utility model provides a filter core, filter drum and mineral spring water purifier, the first filter body includes water permeable part and granular carbon, the surface area of granular carbon is large, and it is loose and porous, and the dissolution of mineralization substance is relatively sufficient, which is beneficial to make the mineral substance concentration in mineralization water reach the relevant standard requirement, and it is beneficial to meet the high-end demand of people on drinking water being beneficial to health.

[0004] The utility model provides a filter core, including first filter body and second filter body, first filter body or / and second filter body is mineralization filter body, second filter body is cylindrical or columnar, first filter body is arranged at the outside of second filter body, first filter body includes water permeable part and granular carbon, water permeable part has filling cavity, or, the filling cavity is formed between water permeable part and second filter body, and granular carbon is filled in filling cavity.

[0005] Optionally, the water permeable part is a water permeable support, the water permeable support is in the shape of a cylindrical shell, the water permeable support includes an outer side partition and an inner side partition, and the filling cavity is formed between the outer side partition and the inner side partition.

[0006] Optionally, the water permeable support further includes a first connecting portion and a second connecting portion, the first connecting portion is connected to a first end of the outer side partition and a first end of the inner side partition, and the second connecting portion is connected to a second end of the outer side partition and a second end of the inner side partition.

[0007] The first connecting portion, the second connecting portion, the outer side partition, and the inner side partition jointly form the filling cavity.

[0008] Optionally, the filter core further includes a first end cap and a second end cap, a first end of the first filter body, a first end of the outer side partition, and a first end of the inner side partition are all connected to the first end cap, and a second end of the first filter body, a second end of the outer side partition, and a second end of the inner side partition are all connected to the second end cap.

[0009] Optionally, the water permeable member is a water permeable mesh cylinder, the water permeable mesh cylinder is sleeved outside the second filter body, and the filling cavity is formed between the water permeable mesh cylinder and the outside of the second filter body.

[0010] Optionally, the filter core further comprises a first end cover and a second end cover, the first end of the first filter body and the first end of the water permeable mesh cylinder are connected to the first end cover, and the second end of the first filter body and the second end of the water permeable mesh cylinder are connected to the second end cover.

[0011] Optionally, the second filter body comprises a substrate, and the substrate is a carbon rod filter core, a ceramic filter core or carbon fiber.

[0012] Optionally, the first filter body is a mineralization filter material capable of precipitating minerals, and the second filter body is a promotion filter material for promoting the mineralization filter material to precipitate minerals.

[0013] Alternatively, the first filter body is a mineralization filter material capable of precipitating minerals, and the second filter body is an anti-interference filter material capable of inhibiting the mineralization filter material from precipitating minerals.

[0014] Alternatively, the first filter body is a mineralization filter material for adjusting the pH value of water, and the second filter body is a neutralization filter material for neutralizing the pH value of water.

[0015] Alternatively, the first filter body is a first mineralization filter material capable of precipitating a first mineral, and the second filter body is a second mineralization filter material capable of precipitating a second mineral.

[0016] The utility model further provides a filter cartridge, including the shell, still include above-mentioned filter core, the filter core sets up in the shell;

[0017] The filter cartridge is provided with a series water path, the series water path passes through the first filter body and the second filter body in sequence or passes through the second filter body and the first filter body in sequence, or the filter cartridge is provided with a parallel water path, and the parallel water path passes through the first filter body and the second filter body respectively.

[0018] The utility model further provides a mineral spring water purifier, the mineral spring water purifier includes above-mentioned filter core, or the mineral spring water purifier includes above-mentioned filter cartridge.

[0019] This utility model provides a filter element, filter cartridge, and mineral water purifier. The filter element is a mineralization filter element, with the first and second filter bodies arranged radially separately for easy assembly. During production, they can be flexibly assembled as needed. The first filter body includes a permeable element and granular carbon. The granular carbon has a large surface area and is porous, allowing for relatively sufficient dissolution of minerals, which helps ensure the mineral concentration in the mineralized water meets relevant standards. Water can pass through the first and second filter bodies sequentially (i.e., filter bodies in series) or separately (i.e., filter bodies in parallel) to meet different usage needs and ensure the water contains minerals beneficial to human health, thus satisfying users' high-end demand for health-promoting drinking water. Attached Figure Description

[0020] Figure 1 A cross-sectional view of a filter element provided in an embodiment of this utility model;

[0021] Figure 2 A top view of a filter element provided in an embodiment of this utility model;

[0022] Figure 3 A longitudinal cross-sectional view of a filter element provided in an embodiment of this utility model;

[0023] Figure 4 A cross-sectional view of a filter element provided in an embodiment of this utility model;

[0024] Figure 5 A schematic diagram of the water circuit (parallel water circuit) of a filter cartridge provided for an embodiment of this utility model;

[0025] Figure 6 A schematic diagram of the water circuit (series water circuit) of a filter cartridge provided for an embodiment of this utility model;

[0026] 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

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] This utility model provides a filter element, such as Figures 1 to 7 As shown, the filter includes a filter element body, which at least includes a first filter element 110 and a second filter element 120. The first filter element 110 and the second filter element 120 are separately arranged, and the second filter element 120 is cylindrical or columnar. The first filter element 110 is disposed outside the second filter element 120. The first filter element 110 includes a water-permeable element 1100 and granular carbon. The water-permeable element 1100 has a filling cavity, or a filling cavity is formed between the water-permeable element 1100 and the second filter element 120, and the granular carbon fills the filling cavity. The granular carbon is granular, with well-developed micropores, high mechanical strength, fast adsorption speed, high purification degree, is not easy to shed powder, and has a long service life. Granular carbon preparation methods are mainly divided into two categories: one is to directly activate carbon without adding binders; the other is to add binders to process the carbon precursor into shape, and then perform the carbon activation process. During the preparation of granular carbon, minerals can be added to give the granular carbon a mineralization effect, which is beneficial to meeting people's high-end demand for drinking water equipment that is beneficial to health. The first filter element 110 includes a water-permeable element 1100 and mineralized granular carbon. The granular carbon has a large surface area and is loose and porous, which allows for relatively sufficient dissolution of its mineralized substances, thus helping to ensure that the mineral concentration in the mineralized water meets the relevant standard requirements.

[0032] Optionally, the permeable component 1100 is a permeable support, which is cylindrical in shape and includes an outer partition 111 and an inner partition 112. The filling cavity is formed between the outer partition 111 and the inner partition 112, and particulate carbon is filled in the filling cavity.

[0033] In specific applications, the filter element further includes a first end cap 221 and a second end cap 222. The first end of the first filter body, the first end of the outer partition 111, and the first end of the inner partition 112 are all connected to the first end cap 221, and the second end of the first filter body, the second end of the outer partition 111, and the second end of the inner partition 112 are all connected to the second end cap 222.

[0034] In specific applications, the permeable support further includes a first connecting portion 113 and a second connecting portion 114. The first connecting portion 113 connects to the first end of the outer partition 111 and the first end of the inner partition 112, and the second connecting portion 114 connects to the second end of the outer partition 111 and the second end of the inner partition 112. The first connecting portion 113, the second connecting portion 114, the outer partition 111, and the inner partition 112 together form the filling cavity. The permeable support is made of metal mesh or plastic mesh.

[0035] Specifically, the permeable component 1100 can also be a permeable mesh cylinder, which is sleeved on the outside of the second filter body 120, and the filling cavity is formed between the permeable mesh cylinder and the outside of the second filter body 120. The filter element also includes a first end cap 221 and a second end cap 222. The first end of the first filter body 110 and the first end of the permeable mesh cylinder are both connected to the first end cap 221, and the second end of the first filter body 110 and the second end of the permeable mesh cylinder are both connected to the second end cap 222.

[0036] Specifically, the second filter body 120 includes a substrate, which may be a carbon rod filter element, a ceramic filter element, or carbon fiber.

[0037] The first filter element 110 and the second filter element 120 are arranged radially separately, which facilitates assembly and allows for flexible assembly as needed during production. By setting two different first filter elements 110 and second filter elements 120, different usage requirements can be met. The filter element provided in this embodiment is a mineralization filter element. By setting at least two different first filter elements 110 and second filter elements 120 in the mineralization filter element, the water contains mineral components that are beneficial to human health, which helps to meet users' high-end demand for drinking water that is beneficial to health.

[0038] 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.

[0039] In practical applications, the first filter body 110 and the second filter body 120 are connected radially, which makes high use of the space inside the filter cartridge and is easy to assemble.

[0040] Specifically, the second filter element 120 may be cylindrical (e.g., ...). Figure 3 (as shown) or columnar (such as) Figure 4 As shown), the shape of the second filter body 120 can match the inner cavity shape of the first filter body 110; the two ends of the second filter body 120 are aligned with the two ends of the first filter body 110.

[0041] Specifically, such as Figure 7 As shown, the first filter body 110 and the second filter body 120 form the filter element body. End caps 221 and 222 are provided at both ends of the filter element body along the axial direction. The first filter body 110 and the second filter body 120 can be disposed between the two end caps 221 and 222. The inner circumference of the first filter body 110 and the outer circumference of the second filter body 120 can be fitted together, or the inner circumference of the first filter body 110 and the outer circumference of the second filter body 120 can be spaced apart.

[0042] Specifically, the first filter 110 and the second filter 120 can be connected in series, such as... Figure 3 As shown in the diagram, taking the direction of the arrow as an example, the water flows radially through the first filter element 110 and the second filter element 120. The first filter element 110 and the second filter element 120 can dissolve different minerals respectively. For example, the first filter element 110 can dissolve zinc (the first filter element 110 is a zinc-containing filter element), and the second filter element 120 can be a weakly alkaline filter element. When the water flows normally through the first filter element 110 and the second filter element 120, the zinc element can dissolve normally. Since the water cannot be drained when the water flow stops, the filter element is inevitably in a soaking state. The water remaining in the filter element is the soaking water. When the filter element is in a soaking state, if the soaking 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. That is, the zinc content of the soaking water does not meet the drinking standard and is not good for human health. In this embodiment, by setting the second filter body 120 as an alkaline filter body, the soaking water can be made weakly alkaline, thereby inhibiting the excessive dissolution of zinc in the first filter body 110 and ensuring that the zinc concentration in the soaking water meets national standards. This can prevent the zinc in the water from exceeding the set range under soaking conditions. By utilizing the mechanism of inhibiting zinc dissolution by soaking in alkaline water, zinc can be normally dissolved during flow (normal water flow), and the technical difficulty of zinc-containing filter bodies easily causing zinc levels to exceed the standard during soaking is overcome.

[0043] Specifically, as a first optional combination scheme for the mineralized filter cartridge, the second filter body 120 is a mineralized filter material capable of dissolving minerals, and the first filter body 110 is a promoting filter material used to promote the dissolution of minerals from the mineralized filter material. The water path in the filter cartridge can first pass through the promoting filter material and then through the mineralized filter material, thus promoting the dissolution of minerals in the mineralized filter material. The mineral dissolution rate is relatively fast, which can meet the needs of users with large flow rates. That is, even at a large flow rate, 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 mineralized filter material. Of course, the first filter body 110 and the second filter body 120, which are connected separately, can be set in the same cavity. The water path can pass through the first filter body 120 and the second filter body 110 sequentially (i.e., the filter bodies are connected in series), or the water path can pass through the second filter body 120 and the first filter body 110 separately (i.e., the filter bodies are connected in parallel, such as...). Figure 6 (as shown), to meet different usage needs.

[0044] In practical applications, water can flow sequentially through a first filter body 110 and a second filter body 120. The second filter body 120 is a mineralized filter material containing calcium and / or magnesium, while the first filter body 110 is an acidic filter material. The first filter body 110 includes weakly acidic ores, and the second filter body 120 includes ores rich in calcium and magnesium. The acidic substances dissolved from the first filter body 110 can promote the dissolution of calcium and magnesium elements from the second filter body 120.

[0045] Alternatively, as a second optional combination of mineralized filter cartridges, the first filter body 110 is a mineralized filter material that can dissolve minerals, and the second filter body 120 is an anti-antagonistic filter material that can inhibit the dissolution of minerals from the mineralized filter material. That is, the second filter body 120 can dissolve an anti-antagonistic substance used to inhibit the dissolution of minerals in the first filter body 110. In some scenarios, when the filter body inside the cartridge is in a soaking state, the dissolution of certain minerals may exceed the set standard, which is detrimental to health if consumed directly. This combination solution, by setting an anti-antagonistic filter material, allows the anti-antagonistic filter material to inhibit the dissolution of minerals from the mineralized filter material, thereby preventing the mineral content from exceeding the corresponding safety standards. In this combination solution, the first filter body 110 and the second filter body 120, which are formed separately, can be disposed in the same cavity. The first filter body 110 can be disposed outside the second filter body 120, and the second filter body 120 can be cylindrical (e.g., ...). Figure 3 and Figure 4 (as shown) or solid columnar (such as) Figure 5 and Figure 6(As shown). In specific applications, the first filter element 110 is a weakly alkaline filter material, and the second filter element 120 is a strongly alkaline filter material. The alkalinity between the weakly alkaline and strongly alkaline filter materials can be considered relative, meaning that the alkalinity of the second filter element 120 is higher than that of the first filter element 110. In specific applications, strongly alkaline filter materials (made of strongly alkaline materials), such as brucite, have the chemical composition Mg(OH)₂ and can directly release (dissolve) OH- in water. - (Reaction a: Mg(OH)2=Mg) 2+ +2OH - This increases the alkalinity of the water, while weakly alkaline filter media (made of weakly alkaline materials), such as calcite, whose chemical composition is CaCO3, need to release CO3 into the water first. 2- (Reaction b: CaCO3 = Ca) 2+ +CO3 2- Then CO3 2- It undergoes a hydrolysis reaction with H2O to produce OH- - (reaction c: Strongly alkaline materials can produce OH- in just one reaction step. - Weakly basic materials require two steps of reaction to obtain OH. - Furthermore, the rate of reaction c is much lower than the rate of reaction a, therefore the strongly alkaline material preferentially releases OH-. - Reaction c is a reversible reaction. When reaction a occurs preferentially, the chemical equilibrium of reaction c shifts to the left. Therefore, strongly basic materials can suppress the OH- of weakly basic materials. - Release. In this combination, strong alkaline materials and weak alkaline materials are combined and assembled to form an inner and outer separate structure. Strong and weak alkaline materials can be assembled within the same filter element. The inhibitory effect of the strong alkaline material on the weak alkaline material can be utilized. Throughout the filter element's service life, the strong alkaline material releases OH- in the early stages. - In the middle and later stages, it releases OH- along with weakly alkaline materials. -The two can work synergistically to greatly extend the lifespan of the filter element, thus achieving a longer filter element lifespan. In specific applications, one, two, or more strongly alkaline filter elements and weakly alkaline filter elements can be respectively set. Of course, they can also be combined with moderately alkaline materials, that is, two or more alkaline filter elements can be set along the radial direction of the filter element. For example, a first alkaline filter element, a second alkaline filter element, and a third alkaline filter element can be set radially from the outside to the inside. The alkalinity of the first alkaline filter element is greater than that of the second alkaline filter element, and the alkalinity of the second alkaline filter element is greater than that of the third alkaline filter element. Alternatively, in specific applications, the first filter element 110 is a zinc mineralized filter material or a copper mineralized filter material, that is, the first filter element 110 is a zinc-containing and / or copper-containing mineralized filter material, and the second filter element 120 is an alkaline filter material. The alkaline substances dissolved in the second filter element 120 (alkaline filter material) can inhibit the dissolution of zinc and copper elements in the first filter element 110. Specifically, the dissolution reaction of zinc (containing zinc-containing materials, such as smithsonite) in water is: ZnCO3 = Zn 2+ +CO3 2- Under normal conditions (pure water obtained after RO membrane filtration), Zn 2+ The saturated solubility of Zn in water can reach 6.0 mg / L, far exceeding the national standard limit of 1.0 mg / L; when the water quality remains unchanged, Zn 2+ and CO3 2- It is dissolved simultaneously, releasing CO3 2- By controlling the concentration of Zn to the lowest possible level, 2+ The saturated dissolution concentration is controlled at the lowest level; from H2CO3-HCO3 - -CO3 2- The equilibrium diagram in water shows that when the pH value is (approximately) 8.3, CO3... 2- The concentration of Zn is at its lowest level, at which point... 2+ The concentration of Zn in the soaking water was also at the lowest level, theoretically calculated to be 0.36 mg / L, which meets the standard limit; that is, by adjusting the pH of the water soaked in the zinc-containing filter to around 8.3, the Zn concentration can be reduced. 2+ The concentration is precisely controlled between 0.2-1.0 mg / L.

[0046] Alternatively, as a third optional combination of mineralized filter elements, the first filter element 110 is a mineralized filter media (alkaline filter media) for adjusting the pH value of the water, and the second filter element 120 is a neutralizing filter media (acidic filter media) for neutralizing the pH value of the water. The mineralized filter media of the first filter element 110 can raise the pH value of the water. In specific applications, the pH value of the water can be adjusted by the water flow rate. The second filter element 120 is used to neutralize the pH value of the water, such as... Figure 3 and Figure 5As shown, the first filter body 110 and the second filter body 120 can be connected in parallel in the water circuit. By adjusting the water flow of the first filter body 110 and the second filter body 120 respectively, the pH value of the overall effluent can be stabilized within the set pH range (generally 7.0 to 9.0).

[0047] In practical applications, as a fourth optional combination scheme for mineralized filter cartridges, the first filter body 110 is a first mineralized filter material capable of dissolving a first mineral, and the second filter body 120 is a second mineralized filter material capable of dissolving a second mineral. The first and second mineralized filter materials are used in combination to provide different minerals. Of course, a third or fourth mineralized filter body can also be added to form a filter cartridge structure richer in minerals. This combination can create a filter cartridge rich in minerals, and through the combination and matching of various filter bodies, it can better meet users' high-end needs for healthy drinking water.

[0048] In specific applications, as the fifth optional combination scheme of mineralized filter element, the first filter body 110 is a first mineralized filter material that can dissolve the first mineral, and the second filter body 120 is a non-mineralized filter material, that is, the second filter body 120 can be a pure carbon rod or a ceramic filter body, etc., used to adsorb larger impurities and remove odors.

[0049] In practical applications, as the sixth optional combination scheme for mineralized filter elements, the first filter element 110 is an alkaline filter material (weakly alkaline), and the second filter element 120 is a metasilicic acid filter material. Metasilicic acid (H2SiO3) can be generated by the hydrolysis reaction of silicate minerals in water. Taking sodium silicate (Na2SiO3) as an example, However, metasilicic acid and orthosilicic acid (H4SiO4) exist in a dynamic equilibrium. Orthosilicic acid has strong acidity and can exist stably in acidic environments, therefore, an alkaline environment makes it... The balance shifts to the left, meaning the content of orthosilicic acid decreases and the concentration of metasilicic acid increases. However, excessive alkalinity will inhibit the hydrolysis of silicate ions, thereby reducing the formation of metasilicic acid. Therefore, an appropriate alkalinity value can promote the formation of metasilicic acid. In specific applications, by having water flow through the first filter body 110 and the second filter body 120 in sequence, the dissolution of metasilicic acid can be promoted, so that the content of metasilicic acid reaches the set standard.

[0050] In specific applications, the first filter body 110 is a mineralized filter material containing calcium and / or magnesium, and the second filter body 120 is an alkaline filter material. In specific applications, the second filter body 120 contains alkaline minerals with different contents, and the first filter body 110 contains minerals with different contents of calcium and magnesium. The first water flow channel flows through the first alkaline minerals of the second filter body 120 and the first filter body 110, and the second water flow channel flows through the second alkaline minerals of the second filter body 120 and the first filter body 110. The concentration of different mineralized elements dissolved can be adjusted by different flow rates in the first water flow channel and the second water flow channel.

[0051] In specific applications, the first filter body 110 includes at least one of magnesia and sepiolite; the second filter body 120 includes at least one of calcite and magnesia.

[0052] Alternatively, the first filter body 110 may include at least one of smithsonite and malachite; the second filter body 120 may include at least one of brucite, sepiolite, and calcite. It should be noted that in this embodiment, granular carbon may be used as a carrier for minerals, that is, minerals and granular carbon raw materials are mixed and then sintered to form granular carbon.

[0053] Alternatively, the first filter element 110 may include at least one of amphibole, magnesia ore, and dolomite; and the second filter element 120 may include at least one of brucite, sepiolite, and calcite.

[0054] Alternatively, the first filter body 110 may include at least one of amphibole, magnesium ore, and dolomite; and the second filter body 120 may include at least one of iron ore and silicate ore.

[0055] Specifically, the first filter body 110 is cylindrical and has an opening at one or both ends, the second filter body 120 is cylindrical or columnar, the outer shape of the second filter body 120 matches the inner cavity shape of the first filter body 110; the two ends of the second filter body 120 are aligned with the two ends of the first filter body 110, and its structure is simple and its manufacturing cost is low.

[0056] like Figure 7 As shown, the first filter body 110 and the second filter body 120 are arranged vertically, or, as... Figure 7 As shown, the first filter body 110 and the second filter body 120 are arranged radially inside and outside.

[0057] This embodiment also provides a filter element design method for designing the above-mentioned filter element.

[0058] In one design scheme, the first filter element 110 is designed to inhibit the dissolution of minerals in the second filter element 120. Specifically, the first filter element 110 can be designed as a strongly alkaline filter element (particulate carbon mixed with strongly alkaline substances), and the second filter element 120 can be designed as a weakly alkaline filter element (particulate carbon mixed with weakly alkaline substances). The weakly alkaline filter element is designed to release CO3 into the water. 2- , using CO3 2- It undergoes a reversible hydrolysis reaction with H2O to produce OH- - Strongly alkaline filter media can directly release (dissolve) OH- in water. - Taking Mg(OH)2 as an example, the strongly alkaline material in a strongly alkaline filter is reacted as follows: Mg(OH)2 = Mg 2+ +2OH -This increases the alkalinity of the water, while weakly alkaline filters, such as those using CaCO3, require the release of CO3 into the water first. 2- Reaction b: CaCO3 = Ca 2+ +CO3 2- Then CO3 2- It undergoes a hydrolysis reaction with H2O to produce OH- - Reaction c: Strongly alkaline filters can produce OH- in just one reaction step. - A weakly alkaline filter requires two steps to obtain OH-. - Furthermore, the rate of reaction c is much lower than the rate of reaction a, therefore the strongly alkaline filter preferentially releases OH-. - Reaction c is a reversible reaction. When reaction a occurs preferentially, the chemical equilibrium of reaction c shifts to the left. Therefore, a strongly basic filter can inhibit the OH- of a weakly basic filter. - Release. Strongly alkaline and weakly alkaline filter elements are assembled into a separate structure. The strongly alkaline and weakly alkaline filter elements can be assembled within the same filter housing. The inhibitory effect of the strongly alkaline filter element on the weakly alkaline filter element can be utilized. During the entire service life of the filter element, the strongly alkaline material releases OH- in the early stages. - In the middle and later stages, it releases OH- along with weakly alkaline materials. - The two can work together to greatly extend the lifespan of the filter element, thus achieving a longer filter element lifespan.

[0059] This utility model embodiment also provides a filter cartridge, such as Figures 1 to 7 As shown, the system includes a housing 210 and the aforementioned 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.

[0060] In specific applications, such as Figure 2 and Figure 4 As shown, the filter elements are connected in parallel, as follows: Figure 1 and Figure 5 As shown, the filter elements are connected in series. Of course, in specific applications, the number of filter elements and their series or parallel connections can be set according to the actual situation.

[0061] Specifically, such as Figure 7As shown, a central tube can be installed inside the filter element, and the central tube can be provided with water permeable holes. The central tube can be connected to the filter cartridge inlet pipe 310, and the filter cartridge outlet pipe 320 can be connected to the cavity between the shell 210 and the filter element. Alternatively, the central tube can be connected to the filter cartridge outlet pipe 320, and the filter cartridge inlet pipe 310 can be connected to the cavity between the shell 210 and the filter element. Water entering the filter cartridge can flow radially into the central tube from the first filter body 110 and the second filter body 120 respectively, and then flow out from the filter cartridge outlet pipe 320.

[0062] Specifically, the cylindrical shell 210 may be provided with a series water passage structure for water to flow sequentially through the first filter body 110 and the second filter body 120. The series water passage structure can flow radially through the first filter body 110 and the second filter body 120. In specific applications, the series water passage structure can enter the filter cylinder from the bottom of the cylindrical shell 210, flow upward along the inner side of the filter cylinder, and flow radially through the first filter body 110 and the second filter body 120 before flowing out from the filter cylinder outlet to the filter cylinder outlet pipe 320.

[0063] Alternatively, the shell 210 may be provided with a parallel water path structure for supplying water to flow through the first filter body 110 and the second filter body 120 respectively. The first filter body 110 and the second filter body 120 may be separated by a central baffle, and the parallel water path structure may have two branch water paths that flow axially through the first filter body 110 and the second filter body 120 to meet the needs of different scenarios.

[0064] In specific applications, the filter element includes a filter body (first filter body 110, second filter body 120, ...), and also includes a first end cap 221 and a second end cap 222. The first end cap 221 and the second end cap 222 are respectively disposed at the upper and lower ends of the filter element. The first filter body 110 and the second filter body 120 may be cylindrical.

[0065] This utility model also provides a mineral water purifier, which includes the aforementioned filter element, or the aforementioned filter cartridge. The granular carbon in its first filter body 110 is granular with well-developed micropores, high mechanical strength, fast adsorption speed, high purification efficiency, is not prone to powdering, and has a long service life. Granular carbon preparation methods are mainly divided into two categories: 1. Direct carbon activation without adding binders; 2. Adding binders to process the carbon precursor into shape, followed by a carbon activation process. During granular carbon preparation, minerals can be added to give the granular carbon a mineralization effect, which helps meet people's high-end demand for health-beneficial drinking water equipment.

[0066] In specific applications, the shell 210 can be cylindrical, with its interior being a filter element chamber for installing the aforementioned mineralized filter element.

[0067] As one of the optional application schemes, the first filter element 110 can be a strongly alkaline filter element, and the second filter element 120 can be a weakly alkaline filter element. The first filter element 110 and the second filter element 120 are connected in series in a water circuit. The inhibitory effect of the strongly alkaline material on the weakly alkaline material can be utilized. During the entire service life of the filter element, the strongly alkaline filter element releases OH- in the early stage. - In the middle and later stages, it releases OH along with the weakly alkaline filter. - The two can work synergistically to release OH above a set range throughout the entire lifespan. - This greatly extends the lifespan of the filter element, thus achieving a longer filter lifespan.

[0068] As a second optional application scheme, the first filter element 110 can be a zinc-containing filter element, and the second filter element 120 can be an alkaline filter element (preferably a weakly alkaline filter element). The first filter element 110 and the second filter element 120 are connected in a series water circuit. The water first flows through the zinc-containing filter element and then through the alkaline filter element. This utilizes the inhibitory effect of the alkaline material on zinc to prevent excessive zinc leaching. The dissolution reaction of zinc (zinc-containing filter element, such as smithsonite) in water is: ZnCO3 = Zn 2+ +CO3 2- Under normal conditions (pure water obtained after RO membrane filtration), Zn 2+ The saturated solubility of Zn in water can reach 6.0 mg / L, far exceeding the national standard limit of 1.0 mg / L; when the water quality remains unchanged, Zn 2+ and CO3 2- It is dissolved simultaneously, releasing CO3 2- By controlling the concentration of Zn to the lowest possible level, 2+ The saturated dissolution concentration is controlled at the lowest level; from H2CO3-HCO3 - -CO3 2- The equilibrium diagram in water shows that when the pH value is (approximately) 8.3, CO3... 2- The concentration of Zn is at its lowest level, at which point... 2+ The concentration of Zn in the soaking water was also at the lowest level, theoretically calculated to be 0.36 mg / L, which meets the standard limit; that is, by adjusting the pH of the water soaked in the zinc-containing filter to around 8.3, the Zn concentration can be reduced. 2+ The concentration is precisely controlled between 0.2-1.0 mg / L. Based on a similar principle, the first filter element 110 can be a copper-containing filter element, and the second filter element 120 can be an alkaline filter element (preferably a weakly alkaline filter element), which can also control the leaching of copper elements within a set range.

[0069] As a third alternative application, the first filter body 110 includes alkaline ore with different contents, and the second filter body 120 contains calcium magnesium ore with different contents. The first and second water flow channels are connected in parallel, and the concentration of different mineralized elements dissolved is adjusted by controlling the different flow rates of the water in the first and second water flow channels.

[0070] In practical applications, mineral water purifiers can be equipped with one or at least two of the aforementioned filter cartridges. When two or more filter cartridges are used, at least two cartridges can be connected in series or in parallel. In practical applications, the aforementioned filter cartridges (mineralized filter cartridges) can be connected in parallel with non-mineralized filter cartridges 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.

[0071] 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, characterized by, The filter core comprises a first filter body and a second filter body, the first filter body or / and the second filter body is a mineralized filter body; the second filter body is in a cylindrical or columnar shape, and the first filter body is arranged outside the second filter body; the first filter body comprises a water permeable member and granular carbon, the water permeable member has a filling cavity, or a filling cavity is formed between the water permeable member and the second filter body, and the granular carbon is filled in the filling cavity.

2. The filter cartridge of claim 1 wherein, The water permeable member is a water permeable support, the water permeable support is in a cylindrical shell shape, and the water permeable support comprises an outer side layer and an inner side layer, and the filling cavity is formed between the outer side layer and the inner side layer.

3. The filter cartridge of claim 2 wherein, The water permeable support further comprises a first connecting part and a second connecting part, the first connecting part is connected to a first end of the outer side layer and a first end of the inner side layer, and the second connecting part is connected to a second end of the outer side layer and a second end of the inner side layer. The first connecting part, the second connecting part, the outer side layer and the inner side layer jointly form the filling cavity.

4. The filter cartridge of claim 2 wherein, The filter core further comprises a first end cover and a second end cover, a first end of the first filter body, a first end of the outer side layer and a first end of the inner side layer are all connected to the first end cover, and a second end of the first filter body, a second end of the outer side layer and a second end of the inner side layer are all connected to the second end cover.

5. The filter core according to claim 1, wherein The water permeable member is a water permeable mesh cylinder, the water permeable mesh cylinder is sleeved outside the second filter body, and the filling cavity is formed between the water permeable mesh cylinder and the outer side of the second filter body.

6. The filter cartridge of claim 5 wherein, The filter core further comprises a first end cover and a second end cover, a first end of the first filter body and a first end of the water permeable mesh cylinder are both connected to the first end cover, and a second end of the first filter body and a second end of the water permeable mesh cylinder are both connected to the second end cover.

7. The filter cartridge of claim 1 wherein, The second filter body comprises a base material, and the base material is a carbon rod filter core, a ceramic filter core or carbon fiber.

8. The filter cartridge of any one of claims 1-7, wherein, The first filter body is a mineralized filter material capable of precipitating minerals, and the second filter body is a promoting filter material for promoting the mineralized filter material to precipitate minerals; Or, the first filter body is a mineralized filter material capable of precipitating minerals, and the second filter body is an anti-interference filter material capable of inhibiting the mineralized filter material from precipitating minerals; Or, the first filter body is a mineralized filter material for adjusting the PH value of water, and the second filter body is a neutralizing filter material for neutralizing the PH value of water; Or, the first filter body is a first mineralized filter material capable of precipitating a first mineral, and the second filter body is a second mineralized filter material capable of precipitating a second mineral.

9. A filter cartridge characterized by, The filter cartridge comprises a cylindrical shell and the filter core according to any one of claims 1 to 8, and the filter core is arranged in the cylindrical shell. The filter cartridge is provided with a serial water path, the serial water path passes through the first filter body and the second filter body in sequence or passes through the second filter body and the first filter body in sequence; or the filter cartridge is provided with a parallel water path, and the parallel water path passes through the first filter body and the second filter body respectively.

10. A mineral water purifier, characterized by, 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.

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