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 first filter body comprises first granular carbon; the first filter body comprises first granular carbon, the second filter body comprises second granular carbon, the first filter body and the second filter body are connected along the axial direction, or the first filter body is sleeved outside the second filter body. The first filter body comprises first granular carbon; the first filter body comprises first granular carbon, the second filter body comprises second granular carbon, the water path can sequentially pass through the first filter body and the second filter body (namely, the filter bodies are connected in series), or the water path can respectively pass through the first filter body and the second filter body (namely, the filter bodies are connected in parallel), so that different use requirements are met, and the water body contains mineral components beneficial to human health; and high-end requirements of users on drinking water beneficial to health can be met.

Description

Technical Field

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

[0002] Traditional household water purifiers mainly use conventional filtration methods, employing standard filter cartridges. After activated carbon adsorption, reverse osmosis filtration is used to obtain purified water suitable for direct drinking. This is currently the most common filtration method used in household water purifiers on the market. While removing pollutants from the water, it also filters out minerals that are beneficial to human health. Long-term consumption of such water is not good for health and cannot meet people's high-end demand for health-promoting drinking water equipment.

[0003] Currently, there are also mineralized filter cartridges on the market, which are mostly made of pressed or sintered mineral materials. They have greater resistance when water flows, and the effect of mineral dissolution is not good. Utility Model Content

[0004] To address the issue of mineral content in drinking water, this invention provides a filter element, a filter cartridge, and a mineral water purifier, which have excellent mineral dissolution effects, thus meeting people's high-end demand for drinking water equipment that promotes health.

[0005] This utility model provides a filter element, including a first filter body and a second filter body, wherein the first filter body and / or the second filter body are mineralized filter bodies; the first filter body includes a first granular carbon; the second filter body includes a second granular carbon, the first filter body and the second filter body are connected and disposed along the axial direction, or the first filter body is sleeved on the second filter body.

[0006] Optionally, the first filter element includes a first cage, and the first particulate carbon is filled in the first cage.

[0007] Optionally, the second filter body includes a second cage, and the second particulate carbon is filled in the second cage.

[0008] Optionally, the first cage frame is cylindrical or columnar; and / or, the second cage frame is cylindrical or columnar.

[0009] Optionally, the first cage is cylindrical, and the second filter fills the inner cavity formed inside the first cage.

[0010] Optionally, the first filter body is sleeved outside the second filter body, and an inner tube is provided between the first filter body and the second filter body.

[0011] Optionally, the inner tube is provided with water-permeable pores, or the inner tube is a water-proof pipe.

[0012] Optionally, the first filter body is a mineralized filter material that can precipitate minerals, and the second filter body is a filter material that promotes the precipitation of minerals from the mineralized filter material.

[0013] Alternatively, the first filter body is a mineralized filter material that can precipitate minerals, and the second filter body is an anti-antagonistic filter material that can inhibit the precipitation of minerals from the mineralized filter material.

[0014] Alternatively, the first filter element may be a mineralized filter material used to adjust the pH value of the water, and the second filter element may be a neutralizing filter material used to neutralize the pH value of the water.

[0015] Alternatively, the first filter body may be a first mineralized filter material capable of precipitating a first mineral, and the second filter body may be a second mineralized filter material capable of precipitating a second mineral.

[0016] 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;

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

[0018] 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.

[0019] This utility model provides a filter element, filter cartridge, and mineral water purifier. The filter element includes a first filter body and a second filter body, wherein the first filter body and / or the second filter body are mineralized filter bodies. The first filter body includes a first granular carbon, and the second filter body includes a second granular carbon. The granular carbon has a large surface area and excellent mineral dissolution effect. The first filter body and the second filter body are connected axially, or the first filter body is sleeved outside the second filter body. The water can pass through the first filter body and the second filter body sequentially (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), to meet different usage needs and ensure that the water contains mineral components beneficial to human health, thus satisfying users' high-end needs for healthy drinking water. Attached Figure Description

[0020] Figure 1 A cross-sectional view of a filter element provided in an embodiment of the present utility model (a first filter body and a second filter body connected in series).

[0021] Figure 2 A cross-sectional view of a filter element provided in an embodiment of the present utility model (the first filter element and the second filter element are connected in parallel, one above the other);

[0022] Figure 3 A cross-sectional view of a filter element provided in an embodiment of the present utility model (a first filter body and a second filter body connected in series inside and outside);

[0023] Figure 4 A schematic diagram of the water circuit (parallel water circuit) of a filter cartridge provided for an embodiment of this utility model;

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

[0025] Figure 6 This is a three-dimensional cross-sectional view of a filter cartridge provided in an embodiment of the present utility model.

[0026] Figure 7 A cross-sectional view of a filter element provided in an embodiment of the present utility model (a first filter body and a second filter body are arranged vertically);

[0027] Figure 8 A cross-sectional view of a filter element provided in an embodiment of the present utility model (a first filter body and a second filter body are disposed inside and outside the body). Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] This utility model provides a filter element, such as Figures 1 to 4 As shown, the system includes at least a first filter element 110 and a second filter element 120, which are separately configured. The first filter element 110 and / or the second filter element 120 are mineralized filter elements. The first filter element 110 includes first granular carbon (first mineralized granular carbon, i.e., granular carbon containing mineralized substances); the second filter element 120 includes second granular carbon (second mineralized granular carbon, i.e., granular carbon containing mineralized substances). The first filter element 110 and the second filter element 120 are connected axially (i.e., the first filter element 110 and the second filter element 120 are arranged vertically along the axial direction), or the first filter element 110 is sleeved outside the second filter element 120 (i.e., the second filter element 120 and the first filter element 110 are arranged radially inside and outside each other). The granular carbon (i.e., mineralized granular carbon) is granular, has well-developed micropores, high mechanical strength, fast adsorption speed, high purification degree, is not easy to shed powder, and has a long service life. There are two main categories of methods for preparing granular carbon: 1. Direct carbon activation without the addition of binders; 2. Adding binders to shape the carbon precursor before carbon activation. During granular carbon preparation, minerals can be added to give the granular carbon a mineralization effect. Granular carbon has a large surface area, resulting in excellent mineral leaching, which helps meet people's high-end demands for health-friendly drinking water equipment.

[0033] Specifically, the first filter element 110 includes a first cage, in which the first granular carbon is filled. The first cage can be a metal cage or a plastic cage. Filling the first cage with the first granular carbon yields a pre-assembled first filter element 110. The second filter element 110 includes a second cage, in which the second granular carbon is filled. The second cage can also be a metal cage or a plastic cage. Filling the second cage with the second granular carbon yields a pre-assembled second filter element 120. The second filter element 120 is then installed with the first filter element 110 to form an assembled filter cartridge component. The two sets of granular carbon, using either a metal or plastic cage, can be interchangeable. By replacing or filling with different granular carbon, the needs of different application scenarios can be met.

[0034] In the first combination form, such as Figure 7 As shown, the first filter body 110 and the second filter body 120 are arranged vertically along the axial direction. The first cage and the second cage can be cylindrical, or the first cage and the second cage can be columnar or block-shaped.

[0035] In the second combination form, such as Figure 8 As shown, the first filter body 110 and the second filter body 120 are arranged radially inward and outward. The first cage can be cylindrical, and the second cage can be columnar or cylindrical. The second filter body 120 is inserted into the inner cavity of the first filter body 110. In specific applications, the first filter body 110 is sleeved on the outside of the second filter body 120. An inner tube can be provided between the first filter body 110 and the second filter body 120 to separate them. The sidewall of the inner tube is impermeable, that is, the inner tube is a water-proof pipe. The water-proof pipe can be a plastic pipe or a metal pipe. Water cannot flow radially from the first filter body 110 to the second filter body 120, nor can it flow radially from the second filter body 120 to the first filter body 110. With this design, the first filter body 110 and the second filter body 120 can be arranged in parallel, and the two parallel water flows can flow axially through the first filter body 110 and the second filter body 120 respectively. When no central pipe is provided or the inner pipe body is provided with water-permeable pores, water can flow radially from the first filter body 110 to the second filter body 120, or from the second filter body 120 to the first filter body 110. The first filter body 110 and the second filter body 120 are connected in series.

[0036] Optionally, the filter element may further include a first end cap 221 and a second end cap 222. The first end cap 221 is connected to the first end of the first filter body 110, and the second end cap 222 is connected to the second end of the first filter body 110. An inner cavity is formed between the first end cap 221, the second end cap 222 and the inner side of the first filter body 110, and the particulate carbon is filled in the inner cavity. This is convenient to manufacture, and the particulate carbon can be encapsulated using the first end cap 221, the second end cap 222 and the first filter body 110.

[0037] Specifically, 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 mineralized filter element. By setting at least two first filter elements 110 and second filter elements 120 in the mineralized filter element, the water flowing through the filter element 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] Specifically, the first filter body 120 may be cylindrical; the two ends of the second filter body 120 are aligned with the two ends of the first filter body 110.

[0040] Specifically, the first filter body 110 and the second filter body 120 can be connected in series, such as... Figure 1 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.

[0041] 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, so that the minerals in the mineralized filter material are promoted to dissolve. 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 the situation where insufficient mineral dissolution leads 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), to meet different usage requirements.

[0042] 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.

[0043] 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 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 element 110 and the second filter element 120 can be disposed in the same cavity, with the first filter element 110 disposed outside the second filter element 120. In practical 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 and strongly alkaline filter materials is a relative concept, 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 (granular carbon), a second alkaline filter element (granular carbon), and a third alkaline filter element (granular carbon or non-granular carbon) 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 (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.

[0044] Alternatively, as a third optional combination of mineralized filter elements, the first filter element 110 and the second filter element 120 can be arranged in parallel. The first filter element 110 is a mineralized filter material used to adjust the pH value of the water, and the second filter element 120 is a neutralizing filter material used to neutralize the pH value of the water. The mineralized filter material 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 5 As 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).

[0045] 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. The filter bodies can be connected in parallel or in series.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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; in specific applications, the above-mentioned minerals can be mixed into the granular carbon preparation process. It should be noted that in this embodiment, the granular carbon can serve as a carrier for the minerals, that is, the minerals and the raw materials for granular carbon are mixed and then sintered to form granular carbon.

[0050] Alternatively, the first filter element 110 may include at least one of smithsonite and malachite; the second filter element 120 may include at least one of brucite, sepiolite, and calcite.

[0051] 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.

[0052] 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.

[0053] like Figure 5 As shown, the first filter body 110 is cylindrical and has openings at both ends. The filter element also includes a first end cap 221 and a second end cap 222. The first end cap 221 covers one end of the first filter body 110 and the second filter body 120, and the second end cap 222 covers the other end of the first filter body 110 and the second filter body 120.

[0054] In specific applications, the first filter element 110 includes a substrate, which may be a carbon rod filter element or a ceramic filter element, 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 may also be disposed inside the substrate.

[0055] This embodiment also provides a filter element design method for designing the aforementioned filter element, including a filter element body. The filter element body includes at least a first filter element 110 and a second filter element 120, which are separately arranged. The first filter element 110 is cylindrical; the second filter element 120 includes granular carbon, which is disposed inside the first filter element 110. The granular carbon 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: one, direct carbon activation without adding binders; two, 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 is beneficial to meeting people's high-end demand for drinking water equipment that is beneficial to health.

[0056] In one design scheme, the first filter element 110 is designed to inhibit the leaching of minerals from 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 (the granular carbon material contains 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.

[0057] This utility model embodiment also provides a filter cartridge, such as Figures 1 to 5 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.

[0058] In specific applications, such as Figure 3 As shown, the filter elements are connected in parallel, as follows: Figure 4 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.

[0059] like Figure 5 The filter cartridge shown is an example of a filter element comprising two filter bodies (first filter body 110 and second filter body 120).

[0060] 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 respectively, and then flow out from the filter cartridge outlet pipe 320.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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 second 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.

[0065] In specific applications, the shell 210 can be cylindrical, with its interior being a filter element chamber for installing the aforementioned mineralized filter element.

[0066] 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.

[0067] 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 the concentration of Zn is at its lowest. 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.

[0068] 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.

[0069] 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.

[0070] 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 element, characterized in that, It includes a first filter body and a second filter body, wherein the first filter body and / or the second filter body are mineralized filter bodies; the first filter body includes a first particulate carbon; the second filter body includes a second particulate carbon, and the first filter body and the second filter body are connected and arranged along the axial direction, or the first filter body is sleeved on the second filter body.

2. The filter element as described in claim 1, characterized in that, The first filter element includes a first cage, and the first granular carbon is filled in the first cage.

3. The filter element as described in claim 2, characterized in that, The second filter element includes a second cage, and the second particulate carbon is filled in the second cage.

4. The filter element as described in claim 3, characterized in that, The first cage frame is cylindrical or columnar; and / or, the second cage frame is cylindrical or columnar.

5. The filter element as described in claim 2, characterized in that, The first cage is cylindrical, and the second filter fills the inner cavity formed inside the first cage.

6. The filter element as described in claim 2, characterized in that, The first filter body is sleeved outside the second filter body, and an inner tube is provided between the first filter body and the second filter body.

7. The filter element as described in claim 6, characterized in that, The inner tube is provided with water-permeable pores, or the inner tube is a water-proof pipe.

8. The filter element according to any one of claims 1 to 7, characterized in that, The first filter body is a mineralized filter material that can precipitate minerals, and the second filter body is a filter material that promotes the precipitation of minerals from the mineralized filter material. Alternatively, the first filter body is a mineralized filter material that can release minerals, and the second filter body is an anti-antagonistic filter material that can inhibit the release of minerals from the mineralized filter material. Alternatively, the first filter element is a mineralized filter material used to adjust the pH value of the water, and the second filter element is a neutralizing filter material used to neutralize the pH value of the water. Alternatively, the first filter body may be a first mineralized filter material capable of precipitating a first mineral, and the second filter body may be a second mineralized filter material capable of precipitating a second mineral.

9. A filter cartridge, characterized in that, The system includes a cylindrical shell and a filter element as described in any one of claims 1 to 8, wherein the filter element is disposed within the cylindrical shell. The filter cartridge is provided with a series water path, which passes through the first filter body and the second filter body in sequence or the second filter body and the first filter body in sequence; or, the filter cartridge is provided with a parallel water path, which passes through the first filter body and the second filter body in sequence.

10. A mineral water purifier, characterized in that, The mineral water purifier includes a filter element as described in any one of claims 1 to 8, or the mineral water purifier includes a filter cartridge as described in claim 9.

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