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 at least comprises a first filter body and a second filter body, and the first filter body and the second filter body are arranged in a split mode and are connected through a fixing structure in the axial direction. 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. According to the filter element, the filter cartridge and the mineral spring water purifier provided by the utility model, the filter element is the mineralized filter element, the mineralized filter element is provided with at least two different filter bodies, namely the first filter body and the second filter body which are connected through the fixing structure, the filter bodies can be separately manufactured, the manufacturing process is relatively simple, and when different filter bodies are combined, the filter bodies can be conveniently assembled. The water dispenser is simple in structure, only needs to be fixedly connected through the fixing structure, is flexible and convenient to produce, can meet different use requirements, enables water to contain mineral components beneficial to the health of a human body area, and is beneficial to meet the high-end requirements of users on drinking water beneficial to the health.

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] The conventional domestic water purification equipment mainly uses the conventional filter core to filter, and obtains pure water by adding reverse osmosis filtration after activated carbon adsorption to achieve the purpose of direct drinking. Based on the working mechanism of reverse osmosis, all other substances except water molecules are intercepted and filtered, that is, the reverse osmosis filtration method removes the pollutants in water and also filters out the mineral components beneficial to human health in water, and long-term drinking of such water is not conducive to health. There are mineralization filter cores on the market at present, and the mineralization filter bodies are mostly integrated structures, and the functions are relatively single, which is difficult to meet the high-end needs of users. SUMMARY

[0003] To solve the problem of mineral content of drinking water, the utility model provides a filter core, filter drum and mineral spring water purifier, which is beneficial to meet the high-end needs of people for drinking water equipment.

[0004] The utility model provides a filter core at least includes first filter body and second filter body, first filter body, second filter body part sets up and is connected along the axial direction through fixed structure, first filter body or / and second filter body is mineralization filter body.

[0005] Optionally, the first filter body is a mineralization filter material that can dissolve minerals, and the second filter body is a promoting filter material for promoting the dissolution of minerals by the mineralization filter material.

[0006] Alternatively, the first filter body is a mineralization filter material that can dissolve minerals, and the second filter body is an anti-interference filter material that can inhibit the dissolution of minerals by the mineralization filter material.

[0007] 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.

[0008] Optionally, the first filter body is a first mineralization filter material that can dissolve a first mineral, and the second filter body is a second mineralization filter material that can dissolve a second mineral.

[0009] Alternatively, the first filter body is a first mineralization filter material that can dissolve a first mineral, and the second filter body is a non-mineralization filter material.

[0010] Optionally, the first filter body is a weakly alkaline filter material, and the second filter body is a strongly alkaline filter material.

[0011] Alternatively, the first filter body is a zinc mineralization filter material or a copper mineralization filter material, and the second filter body is an alkaline filter material.

[0012] Alternatively, the first filter element may be a mineralized filter material containing calcium and / or magnesium, and the second filter element may be an alkaline filter material.

[0013] Alternatively, the first filter element may be a mineralized filter material containing calcium and / or magnesium, and the second filter element may be an acidic filter material.

[0014] Optionally, the first filter body comprises brucite or sepiolite; the second filter body comprises calcite or brucite.

[0015] Alternatively, the first filter element may comprise smithsonite or malachite; the second filter element may comprise sepiolite, calcite, or brucite.

[0016] Alternatively, the first filter material may include amphibole, magnesia ore, or dolomite; the second filter material may include sepiolite, calcite, or brucite.

[0017] Alternatively, the first filter element may comprise amphibole, magnesium ore, or dolomite; and the second filter element may comprise iron ore or silicate ore.

[0018] Optionally, the first filter body and the second filter body are cylindrical or columnar.

[0019] Optionally, the fixing structure includes an adhesive, and the first filter body and the second filter body are fixedly bonded together by the adhesive.

[0020] Alternatively, the fixing structure includes an end cap assembly, wherein a first end cap is connected to the end face of the first filter body, a second end cap is connected to the end face of the second filter body, and the first end cap and the second end cap are fixedly connected.

[0021] Alternatively, the fixing structure includes a central tube, with the first filter body and the second filter body axially sleeved on the central tube;

[0022] Alternatively, the fixing structure includes a cylindrical shell, and the first filter body and the second filter body are axially inserted into the cylindrical shell;

[0023] Alternatively, the fixing structure includes a clamping bracket, with the first filter body and the second filter body mounted axially on the clamping bracket.

[0024] Optionally, the substrate of the first filter body is any one of carbon rod filter element, ceramic filter element, carbon fiber roll, and carbon particles; the substrate of the second filter body is any one of carbon rod filter element, ceramic filter element, carbon fiber roll, and carbon particles; the mineralized filter material, promoting filter material, anti-antagonistic filter material, or neutralizing filter material is dispersed in the substrate or adhered in layers to the surface of the substrate.

[0025] This utility model also provides a filter cartridge, including a shell and the above-mentioned filter element, wherein the filter element is disposed inside the shell.

[0026] Optionally, the shell is provided with a series water passage structure for water to flow sequentially through the first filter body and the second filter body;

[0027] Alternatively, the shell may be equipped with a series water passage structure for water to flow sequentially through the second filter body and the first filter body;

[0028] Alternatively, the shell may be provided with a parallel water passage structure for supplying water to flow through the first filter body and the second filter body respectively.

[0029] 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.

[0030] This utility model provides a filter element, filter cartridge, and mineral water purifier. The filter element is a mineralized filter element, which is provided with at least two different first filter bodies and second filter bodies. The first filter bodies and second filter bodies are set separately and connected along the axial direction by a fixed structure. Each filter body can be manufactured separately, and the manufacturing process is relatively simple. When different filter bodies are combined, they only need to be fixedly connected by the fixed structure, making production more flexible and convenient. The water can pass through the first filter body and the second filter body in sequence (i.e., the filter bodies are connected in series), or the water can pass through the first filter body and the second filter body separately (i.e., the filter bodies are connected in parallel), so as to meet different usage needs and make the water contain mineral components that are beneficial to human health, which is conducive to meeting users' high-end needs for drinking water that is beneficial to health. Attached Figure Description

[0031] Figure 1 A front view of a filter element provided in an embodiment of this utility model (the filter elements are connected in series along the axial direction of the water path);

[0032] Figure 2 A front view of a filter element provided for an embodiment of this utility model (the filter elements are connected in parallel along the transverse direction of the water path);

[0033] Figure 3 A cross-sectional view of a filter element provided for an embodiment of this utility model (two filter bodies connected in parallel along the radial direction of the water path);

[0034] Figure 4 A cross-sectional view of a filter element provided for an embodiment of the present utility model (three filter bodies connected in parallel along the radial direction of the water path);

[0035] Figure 5 A schematic diagram of the water circuit (parallel water circuit) of a filter cartridge provided for an embodiment of this utility model;

[0036] Figure 6 A schematic diagram of the water circuit (series water circuit) of a filter cartridge provided for an embodiment of this utility model;

[0037] 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

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] This utility model provides a filter element, such as Figures 1 to 4As shown, the filter element includes at least 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 connected along the axial direction via a fixing structure 190. The first filter element 110 and / or the second filter element 120 are mineralized filter elements. The first filter element 110 and the second filter element 120 are separately arranged along the axial direction and fixedly connected via the fixing structure 190. Different filter elements (first filter element 110, second filter element 120, etc.) can be manufactured separately, making the manufacturing process relatively simple. Furthermore, when different filter elements are combined, they only need to be fixedly connected via the fixing structure 190, making production more flexible and convenient. By setting two different first filter elements 110 and second filter elements 120, different usage needs can be met. The filter element provided in this embodiment is a mineralized filter element. By setting at least two different first filter elements 110 and second filter elements 120 in the mineralized filter element, the water contains mineral components beneficial to human health, which helps meet users' high-end demand for healthy drinking water.

[0043] In practical applications, mineralizing filter cartridges can be used in conjunction with conventional filter cartridges. That is, the mineralizing filter cartridge can be placed downstream of the conventional filter cartridge. The pure water produced by the conventional filter cartridge passes through the mineralizing filter cartridge, which 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 user's health.

[0044] Specifically, the filter elements can be connected in series. For example, consider a configuration with two filter elements (i.e., the first filter element 110 and the second filter element 120). Figure 1As shown in the figure, taking the direction of water flow as an example (arrow direction), the fixed structure 190 can be a permeable connecting plate. The first filter body 110 and the second filter body 120 are fixed to both sides of the connecting plate by appropriate methods such as bonding or plugging. Water flows axially through the first filter body 110 and the second filter body 120 successively. The first filter body 110 and the second filter body 120 can dissolve different minerals respectively, or the first filter body 110 can dissolve zinc (the first filter body 110 is a zinc-containing filter body). The second filter body 120 can be a weak alkali. In this type of filter, when water flows normally through the first filter element 110 and the second filter element 120, zinc can dissolve normally. However, when the water flow stops, the water inside the filter element cannot be drained, and the filter element inevitably remains 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 time will exceed the national standard safety limit. This means the zinc content in the soaking water does not meet drinking standards and is detrimental to human health. In this embodiment, by setting the second filter element 120 as an alkaline filter element, the soaking water becomes weakly alkaline, thereby inhibiting excessive zinc dissolution from the first filter element 110. This ensures that the zinc concentration in the soaking water also meets national standards, preventing the zinc content in the water from exceeding the set range under soaking conditions. By utilizing the mechanism of inhibiting zinc dissolution through alkaline water soaking, zinc can dissolve normally during flow (normal water flow) while overcoming the technical difficulty of zinc-containing filters easily leading to excessive zinc levels during soaking.

[0045] Specifically, as a first optional combination scheme for the mineralized filter cartridge, the first filter body 110 is a mineralized filter material capable of dissolving minerals, and the second filter body 120 is a promoting filter material used to facilitate the dissolution of minerals from the mineralized filter material. The water in the filter cartridge can first pass through the promoting filter material and then through the mineralized filter material; that is, the water flow can also first pass through the second filter body 120 and then through the first filter body 110. This promotes the dissolution of minerals in the mineralized filter material, resulting in a faster dissolution rate that can meet the needs of users with high-flow-rate water usage. In other words, 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 mineralized filter material. Of course, the first filter body 110 and the second filter body 120 can be housed in the same cavity, and the water path can pass through the second filter body 120 and the first filter body 110 sequentially (i.e., the filter bodies are connected in series). Alternatively, the fixing structure 190 can be a watertight connecting plate, with the first filter body 110 and the second filter body 120 fixed to both sides of the connecting plate by appropriate methods such as bonding or plugging. The water path can then pass through the second filter body 120 and the first filter body 110 respectively (i.e., the filter bodies are connected in parallel, such as...). Figure 2 , 3(As shown), to meet different usage needs. 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 acidic filter material. The second filter body 120 includes weakly acidic ore or is a weakly acidic ore, and the first filter body 110 includes ore rich in calcium and magnesium. The acidic substances dissolved from the second filter body 120 can promote the dissolution of calcium and magnesium elements from the first filter body 110.

[0046] Alternatively, as a second optional combination of mineralized filter cartridges, the first filter element 110 is a mineralized filter material that can dissolve minerals, and the second filter element 120 is an anti-antagonistic filter material that can inhibit the dissolution of minerals from the mineralized filter material. That is, the second filter element 120 can dissolve an anti-antagonistic substance used to inhibit the dissolution of minerals in the first filter element 110. In some scenarios, when the filter elements are in a soaking state, the dissolution of certain minerals may exceed the set standards, which is detrimental to health if consumed directly. This combination solution, by incorporating 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 combined design, the first filter element 110 and the second filter element 120, which are fixedly connected along the axial direction, can be disposed in the same cavity. The first filter element 110 can be disposed above the second filter element 120. When the filter element is immersed, due to the presence of gas (trapped gas) within the filter element, the first filter element 110 is not completely immersed, meaning the liquid level in the filter cartridge may not completely submerge the first filter element 110. This also reduces the dissolution of minerals in the first filter element 110 during immersion. Furthermore, the second filter element 120 can be completely immersed below the liquid surface, allowing for more thorough dissolution of its antagonistic substances and effectively inhibiting the dissolution of minerals in the first filter element 110. 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 relative alkalinity between the weakly and strongly alkaline filter materials is a relative concept; that is, the alkalinity of the second filter element 120 is higher than that of the first filter element 110. In specific applications, strongly alkaline filter media (made of strongly alkaline materials), such as brucite, with the chemical composition Mg(OH)2, 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, the strong alkaline material and the weak alkaline material are separately arranged and form an axially fixed structure. The strong alkaline material and the weak alkaline material can be assembled in the same filter element. The inhibitory effect of the strong alkaline material on the weak alkaline material can be utilized. During the entire service life of the filter element, the strong alkaline material releases OH in the early stage. - 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 axial 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 from top to bottom along the axial direction. 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 (approximately) is 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.

[0047] Alternatively, as a third optional combination of mineralized filter elements, the first filter element 110 is a mineralized filter media for adjusting the pH value of the water, and the second filter element 120 is a neutralizing 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 2 , Figure 3 As shown, the first filter element 110 and the second filter element 120 can be connected in parallel in the water circuit. By adjusting the water flow of the first filter element 110 and the second filter element 120 respectively, the pH value of the overall effluent can be stabilized within a set pH range (generally 7.0 to 9.0). Figure 4 As shown, the filter element may also include a third filter element 130, and the first filter element 110, the second filter element 120 and the third filter element 130 may be connected in parallel in the water circuit.

[0048] 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.

[0049] In specific applications, as the fifth optional combination scheme of mineralized filter cartridge, 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, so that the functions of mineralizing water quality and adsorbing and removing odors can be realized in the same filter cartridge.

[0050] 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.

[0051] 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.

[0052] In specific applications, the first filter body 110 includes at least one of brucite and sepiolite; the second filter body 120 includes at least one of calcite and brucite.

[0053] 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, calcite, and brucite.

[0054] 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.

[0055] 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.

[0056] Specifically, the first filter body 110 and the second filter body 120 are cylindrical or columnar; the first filter body 110 and the second filter body 120 can be cylindrical, polygonal columnar, frustum-shaped, etc.

[0057] Specifically, the first filter body 110 and the second filter body 120 can be sintered and solidified separately. Of course, when the filter element includes three or more filter bodies, each filter body can also be fixedly connected in sequence along the axial direction. When the first filter body 110 and the second filter body 120 are connected by bonding, they can appear as an integral carbon rod.

[0058] Specifically, the first filter body 110 and the second filter body 120 are in a suitable shape, such as cylindrical or columnar. In specific applications, the first filter body 110 and the second filter body 120 include a substrate, which can be a carbon rod filter body or a ceramic filter body, etc.; the mineralizing filter material, promoting filter material, anti-antagonistic filter material, or neutralizing filter material is dispersed in the substrate or attached to the surface of the substrate. Alternatively, the mineralizing filter material, promoting filter material, anti-antagonistic filter material, or neutralizing filter material can also be disposed inside the substrate.

[0059] Specifically, the fixing structure 190 includes an adhesive, and the first filter body 110 and the second filter body 120 are fixedly bonded together by the adhesive. The preparation method is simple and the product cost is low.

[0060] Alternatively, the fixing structure 190 includes an end cap assembly, with a first end cap connected to the end face of the first filter body 110 and a second end cap connected to the end face of the second filter body 120, and the first end cap and the second end cap are fixedly connected; the first end cap and the second end cap can be fixedly connected by welding, plug-in structure, or snap-fit ​​structure.

[0061] Alternatively, the fixing structure 190 includes a central tube, with the first filter body 110 and the second filter body 120 axially fitted onto the central tube, making assembly relatively convenient. End caps 221 and 222 can be provided at both ends of the central tube, with the first filter body 110 and the second filter body 120 axially positioned between the end caps 221 and 222.

[0062] Alternatively, the fixing structure 190 may include a cylindrical shell, in which the first filter body 110 and the second filter body 120 are axially inserted, thereby fixing the first filter body 110 and the second filter body 120 axially.

[0063] Alternatively, the fixing structure 190 includes a clamping bracket, on which the first filter body 110 and the second filter body 120 are axially mounted. The clamping bracket may be C-shaped and can clamp the first filter body 110 and the second filter body 120.

[0064] In practical applications, the first filter body 110 and the second filter body 120 can also be fixed by means of net cages, ropes, etc.

[0065] Specifically, the substrate of the first filter body 110 can be any one of carbon rod filter element, ceramic filter element, carbon fiber roll, and carbon particles; the substrate of the second filter body 120 can be any one of carbon rod filter element, ceramic filter element, carbon fiber roll, and carbon particles.

[0066] Specifically, the mineralizing filter media, promoting filter media, anti-antagonistic filter media, or neutralizing filter media are dispersed in the substrate or attached to the surface of the substrate. The mineralizing filter media, promoting filter media, anti-antagonistic filter media, or neutralizing filter media may be arranged in layers on the surface of the substrate, and the layered structure is similar to the structure of a carburized layer.

[0067] This embodiment also provides a filter element design method for designing the aforementioned filter element, which includes at least two separate filter bodies. The number of filter bodies can be set according to actual conditions. The filter bodies (including but not limited to the first filter body 110 and the second filter body 120) are designed to be fixedly connected. The connection surface between the filter bodies can be a plane or a stepped surface, etc.

[0068] 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, and the second filter element 120 can be designed as a weakly alkaline filter element, which 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 of reaction 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 fixed together in an axially arranged 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.

[0069] 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.

[0070] In specific applications, such as Figure 5 As shown, taking a filter element comprising three filter elements (first filter element 110, second filter element 120, and third filter element 130) as an example, the filter elements are arranged in parallel, as follows: Figure 6 As shown, taking a filter cartridge consisting of three filter elements as an example, the filter elements are connected in series. Of course, in specific applications, the number of filter elements and the series or parallel connection of the filter elements can also be set according to the actual situation. In specific applications, the series and parallel connection of the first filter element 110 and the second filter element 120 can be switched. That is, by setting a switching structure in the filter cartridge or water circuit plate, the series and parallel connection between the first filter element 110 and the second filter element 120 can also be switched, further enriching the options for mineralized water and adapting to more application scenarios.

[0071] like Figure 7 The filter cartridge shown is an example of a filter element comprising two filter bodies (first filter body 110 and second filter body 120).

[0072] Specifically, a central tube can be provided 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, and then flow out from the filter cartridge outlet pipe 320 (see reference). Figure 3 and Figure 7 ).

[0073] 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 sequentially through the first filter body 110 and the second filter body 120 in the axial direction. 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 out from the filter cylinder outlet to the filter cylinder outlet pipe 320 after passing sequentially through the first filter body 110 and the second filter body 120 in the axial direction.

[0074] Alternatively, the casing 210 may be equipped with a series water passage structure for water to flow sequentially through the second filter body 120 and the first filter body 110. The series water passage structure allows water to enter the filter cartridge from the bottom of the casing 210, flow upwards, and axially pass sequentially through the second filter body 120 and the first filter body 110 before exiting from the filter cartridge outlet. In some applications, water can flow sequentially through the second filter body 120 and the first filter body 110 in a first direction, and then sequentially through the first filter body 110 and the second filter body 120 in a second direction, forming a U-shaped water passage that flows through the second filter body 120 and the first filter body 110 twice. Of course, when there are three or more filter bodies, the series water passage structure flows sequentially through each of the filter bodies. For example, when there are three filter bodies, the series water passage structure can flow sequentially through the first filter body 110, the second filter body 120, and the third filter body.

[0075] Or, such as Figure 5 As shown, the cylindrical shell 210 is 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 parallel water path structure can have two branch water paths that flow radially through the first filter body 110 and the second filter body 120 to meet different usage requirements. When three filter bodies are provided, such as... Figure 4 and Figure 5 As shown, the parallel water circuit structure can have three branch water circuits that flow through the first filter body 110, the second filter body 120, and the third filter body 130 respectively. In specific applications, each branch water circuit can be equipped with a control valve or a flow valve. The filter cartridge can be connected to a water circuit board, which has control water circuits that are connected to each branch water circuit. The control water circuit control valves or flow valves control the amount of water flowing through each filter body (first filter body 110, second filter body 120) to obtain the required drinking water.

[0076] In specific applications, the filter element includes filter bodies (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. In specific applications, the first end cap 221 and / or the second end cap 222 may be provided with flow holes, and the first filter body 110 and the second filter body 120 may be cylindrical. Alternatively, the filter element may also include an encapsulation shell, in which each filter body (first filter body 110, second filter body 120, ...) can be encapsulated. The encapsulation shell may be disposed within the cylindrical shell 210 of the filter cartridge. The two ends of the encapsulation shell are provided with series water passage holes, and the water flows axially from the first filter body 110 and the second filter body 120 or from the second filter body 120 and the first filter body 110 in sequence; or, the side of the encapsulation shell is provided with two sets of radial parallel water passage holes, and the two branch water passages flow through the first filter body 110 and the second filter body 120 respectively.

[0077] This utility model also provides a mineral water purifier, which includes the aforementioned filter element, or the aforementioned filter cartridge. By setting at least two different first filter elements 110 and second filter elements 120 in the filter element, different usage needs 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 needs for drinking water that is beneficial to health.

[0078] In specific applications, the shell 210 can be cylindrical, with the interior being a filter element chamber for installing the aforementioned mineralized filter element. The first filter body 110 and the second filter body 120 are arranged vertically along the axial direction of the shell 210.

[0079] 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.

[0080] 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 (approximately) is 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.

[0081] 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.

[0082] 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.

[0083] 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 element comprises at least a first filter and a second filter, the first filter and the second filter are arranged separately and connected by a fixing structure along the axial direction, the first filter and the second filter are mineralization filters; The first filter is a mineralization filter capable of dissolving mineral substances, and the second filter is a promoting filter capable of promoting the mineralization filter to dissolve mineral substances; Alternatively, the first filter is a mineralization filter capable of dissolving mineral substances, and the second filter is an anti-interference filter capable of inhibiting the mineralization filter from dissolving mineral substances. Alternatively, the first filter is a mineralization filter capable of adjusting the PH value of water, and the second filter is a neutralization filter capable of neutralizing the PH value of water.

2. The filter element according to claim 1, wherein: The first filter is a first mineralization filter capable of dissolving first mineral substances, and the second filter is a second mineralization filter capable of dissolving second mineral substances. Alternatively, the first filter is a first mineralization filter capable of dissolving first mineral substances, and the second filter is a non-mineralization filter.

3. The filter element according to claim 1, wherein: The first filter is a weak alkaline filter, and the second filter is a strong alkaline filter. Alternatively, the first filter is a zinc mineralization filter or a copper mineralization filter, and the second filter is an alkaline filter. Alternatively, the first filter is a calcium-containing or magnesium-containing mineralization filter, and the second filter is an alkaline filter. Alternatively, the first filter is a calcium-containing or magnesium-containing mineralization filter, and the second filter is an acid filter.

4. The filter element according to claim 1, wherein: The first filter comprises brucite or sepiolite, and the second filter comprises calcite or brucite. Alternatively, the first filter comprises smithsonite or malachite, and the second filter comprises sepiolite, calcite or brucite. Alternatively, the first filter comprises hornblende, magnesite or dolomite, and the second filter comprises sepiolite, calcite or brucite. Alternatively, the first filter comprises hornblende, magnesite or dolomite, and the second filter comprises iron ore or silicate ore.

5. The filter cartridge of any one of claims 1 to 4, wherein, The first filter and the second filter are in the shape of a cylinder or a column.

6. The filter element according to any one of claims 1 to 4, wherein: The fixing structure comprises an adhesive, and the first filter and the second filter are fixedly adhered by the adhesive. Alternatively, the fixing structure comprises an end cap assembly, an end surface of the first filter is connected with a first end cap, and an end surface of the second filter is connected with a second end cap, the first end cap and the second end cap are fixedly connected. Alternatively, the fixing structure comprises a center tube, and the first filter and the second filter are axially sleeved on the center tube. Alternatively, the fixing structure comprises a cylinder shell, and the first filter and the second filter are axially inserted into the cylinder shell. Alternatively, the fixing structure comprises a clamping bracket, and the first filter and the second filter are axially mounted on the clamping bracket.

7. The filter cartridge of claim 1 wherein, The base material of the first filter body is any one of carbon rod filter core, ceramic filter core, carbon fiber roll and carbon particle; the base material of the second filter body is any one of carbon rod filter core, ceramic filter core, carbon fiber roll and carbon particle; the mineralized filter material, the promoting filter material, the anti-interference filter material or the neutralizing filter material is dispersed in the base material or attached to the surface of the base material in a layer shape.

8. A filter cartridge characterized by, The filter cartridge comprises a cartridge shell and a filter core as claimed in any one of claims 1 to 7, and the filter core is arranged in the cartridge shell. The cartridge shell is provided with a series waterway structure for water to flow through the first filter body and the second filter body in sequence. Alternatively, the cartridge shell is provided with a series waterway structure for water to flow through the second filter body and the first filter body in sequence. Alternatively, the cartridge shell is provided with a parallel waterway structure for water to flow through the first filter body and the second filter body respectively.

9. A mineral water purifier, characterized by, The mineral spring water purifier comprises the filter core as claimed in any one of claims 1 to 7, or the filter cartridge as claimed in claim 8.

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