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 filter body assembly, the filter body assembly comprises a first filter body, a second filter body and a third filter body, the first filter body, the second filter body and the third filter body are sequentially arranged, and the second filter body is arranged between the first filter body and the third filter body; and the second filter body comprises granular carbon. The filter cartridge comprises a cartridge shell and the filter element, and the filter element is arranged in the cartridge shell. The mineral spring water purifier comprises the filter element or the filter cartridge. The water path can sequentially pass through the first filter body, the second filter body and the third filter body (namely, the filter bodies are connected in series), or the water path can respectively pass through the first filter body, the second filter body and the third 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] 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 adopts the conventional filter core through the activated carbon adsorption and adds the reverse osmosis filtration to obtain the pure water to reach the direct drinking purpose, and this is the most common filtering mode of the domestic water purification equipment on the market at present. INVENTION CONTENTS

[0003] In order to solve the problem of the 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 demand of people to drinking water equipment to meet the beneficial health.

[0004] The utility model provides a filter core, including filter body subassembly, the filter body subassembly includes first filter body, second filter body and third filter body, and first filter body, second filter body and third filter body are sequentially arranged, and the second filter body is arranged between the first filter body and the third filter body, and the second filter body includes granular carbon.

[0005] Optionally, the first filter body is cylindrical, the third filter body is cylindrical or columnar, the first filter body is sleeved on the outer side of the third filter body, and the inner side of the first filter body and the outer side of the third filter body have a sandwich cavity, and the granular carbon is filled in the sandwich cavity.

[0006] Optionally, the filter core further includes first end cover and second end cover, the first end cover is connected to the first end of filter body subassembly, and the second end cover is connected to the second end of the filter body subassembly.

[0007] Optionally, the first end cover is provided with first water inlet or / and first water outlet.

[0008] And / or, the second end cover is provided with second water inlet or / and second water outlet.

[0009] Optionally, a first isolation pipe is arranged between the first filter body and the second filter body.

[0010] And / or, a second isolation pipe is arranged between the second filter body and the third filter body.

[0011] Optionally, the filter further comprises a first filter disc and a second filter disc, the first filter disc is arranged at the first end of the filter assembly, and the second filter disc is arranged at the second end of the filter assembly; the first filter disc comprises at least one of a ceramic filter disc, a carbon fiber filter disc or a carbon filter disc; and the second filter disc comprises at least one of a ceramic filter disc, a carbon fiber filter disc or a carbon filter disc.

[0012] Optionally, the first filter comprises a substrate, and the substrate is a carbon rod filter, a ceramic filter or a carbon fiber filter or granular carbon.

[0013] Optionally, the third filter comprises a substrate, and the substrate is a carbon rod filter, a ceramic filter or a carbon fiber filter or granular carbon.

[0014] Optionally, the first filter has a mineralization filter capable of precipitating minerals, and the second filter or the third filter has a promotion filter for promoting the mineralization filter to precipitate minerals.

[0015] Alternatively, the first filter has a mineralization filter capable of precipitating minerals, and the second filter or the third filter has an anti-interference filter capable of inhibiting the mineralization filter from precipitating minerals.

[0016] Alternatively, the first filter has a mineralization filter for adjusting the pH value of water, and the second filter or the third filter has a neutralization filter for neutralizing the pH value of water.

[0017] Alternatively, the first filter has a first mineralization filter capable of precipitating a first mineral, and the second filter or the third filter has a second mineralization filter capable of precipitating a second mineral.

[0018] The utility model further provides a filter cartridge, including the shell, still include above-mentioned filter core, the filter core sets up in the shell;

[0019] The filter cartridge is provided with a series water circuit, which passes through the first filter and the second filter in sequence or passes through the second filter and the first filter in sequence; or the filter cartridge is provided with a parallel water circuit, which passes through the first filter and the second filter respectively.

[0020] The utility model further provides a mineral spring water purifier, the mineral spring water purifier includes above-mentioned filter core, or the mineral spring water purifier includes above-mentioned filter cartridge.

[0021] The utility model provides a filter core, filter drum and mineral water purifier, including filter body subassembly, the filter body subassembly includes first filter body, second filter body and third filter body, first filter body, second filter body and third filter body arrange setting in proper order, and the second filter body sets up between the first filter body and the third filter body, the second filter body includes granular carbon. Waterway can pass through first filter body, second filter body, third filter body (namely filter body series connection) in proper order, or waterway can pass through first filter body, second filter body, third filter body (namely filter body parallel connection) respectively, to satisfy different use demand make the mineral matter component that water body contains is beneficial to human health, is favorable to satisfy the high -end demand of user to drinking water satisfies beneficial health. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a kind of filter core's section view provided in the utility model embodiment;

[0023] Figure 2 It is a kind of filter core's plan view provided in the utility model embodiment;

[0024] Figure 3 It is a kind of filter core's longitudinal section view provided in the utility model embodiment;

[0025] Figure 4 It is a kind of filter core's transverse section view provided in the utility model embodiment;

[0026] Figure 5 It is a kind of filter drum's waterway schematic view (parallel waterway) provided in the utility model embodiment;

[0027] Figure 6 It is a kind of filter drum's waterway schematic view (series connection waterway) provided in the utility model embodiment;

[0028] Figure 7 It is a kind of filter drum's three-dimensional section schematic view provided in the utility model embodiment. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is combined with the embodiment, and the utility model is further detailedly explained. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0030] It should be noted that the terms "set", "connect" should be broadly understood, for example, can be directly set, connect, can also be indirectly set, connect through the centering element, centering structure.

[0031] In addition, in the embodiments of the utility model, if there are terms indicating the orientation or position relationship such as "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., the orientation or position relationship is based on the orientation or position relationship shown in the drawings or the conventional placement state or use state, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated structure, feature, device or element must have a specific orientation or position relationship, nor must be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0032] In the specific technical features and embodiments described in the specific embodiments, any suitable combination can be combined without contradiction, for example, different specific technical features / embodiments can form different embodiments, in order to avoid unnecessary repetition, various possible combinations of various specific technical features / embodiments in the utility model are not described again.

[0033] The utility model provides a kind of filter element, as shown in Figures 1 to 7 The second filter body 120 includes granular carbon. Granular carbon is granular, with developed micropores, high mechanical strength, fast adsorption speed, high purification degree, not easy to powder off, and long service life. The preparation method of granular carbon is mainly divided into two categories: 1. without adding binder directly for carbon activation; 2. adding binder to process carbon precursor into shape, and then performing carbon activation process. When preparing granular carbon, mineralizing agents can be added to make granular carbon have mineralization effect, which is beneficial to meet the high-end demand of people on drinking water equipment to meet the health benefits.

[0034] Optionally, the first filter body 110 is in a cylindrical shape, the third filter body 130 is in a cylindrical or columnar shape, the first filter body 110 is sleeved outside the third filter body 130, and there is a sandwich cavity between the inner side of the first filter body 110 and the outer side of the third filter body 130; the granular carbon of the second filter body 120 is filled in the sandwich cavity, and assembly is convenient.

[0035] In specific application, the filter element further comprises a first end cover 221 and a second end cover 222, the first end cover 221 is connected to the first end of the filter body assembly, and the second end cover 222 is connected to the second end of the filter body assembly.

[0036] Specifically, the first filter body 110 and the third filter body 130 comprise a substrate, which can be a carbon rod filter element, a ceramic filter element or a carbon fiber.

[0037] The first filter body 110, the second filter body 120 and the third filter body 130 are arranged in a radial direction, which is convenient for assembly and flexible assembly according to needs in production. By arranging three different first filter bodies 110 and second filter bodies 120 and third filter bodies 130, different use requirements can be met, so that the water body contains mineral components beneficial to human health, which is beneficial to meet the high-end demand of users for drinking water to meet the beneficial health demand.

[0038] In specific application, the mineralization filter element can be used in cooperation with a conventional filter element (for example, an RO membrane filter element), that is, the mineralization filter element can be arranged downstream of the filter element, and the pure water formed by the filter element passes through the mineralization filter element, the mineralization filter element can dissolve an appropriate amount of minerals in the water body, so that the drinking water for the user has an appropriate amount of minerals, which is beneficial to the health of the user.

[0039] In specific application, the first filter body 110, the second filter body 120 and the third filter body 130 are connected in a radial direction, the space utilization rate inside the filter cartridge is high, and the assembly is convenient.

[0040] Specifically, the third filter body 130 can be in a cylindrical shape (as shown in Figure 1 or a columnar shape (as shown in Figure 3 The two ends of the second filter body 120 and the third filter body 130 are aligned with the two ends of the first filter body 110.

[0041] Specifically, the first end cover is provided with a first water inlet or / and a first water outlet; specifically, the second end cover is provided with a second water inlet or / and a second water outlet.

[0042] Specifically, as shown in Figure 4 and Figure 5 A first isolation pipe is arranged between the first filter body 110 and the second filter body 120, and a second isolation pipe is arranged between the second filter body 120 and the third filter body 130. The first filter body 110, the second filter body 120 and the third filter body 130 can be arranged in parallel.

[0043] Specifically, as shown in Figure 7As shown, the first filter 110, the second filter 120, and the third filter 130 form a filter core body, and the filter core body is provided with end covers 221 and 222 at two axial ends thereof, and the first filter 110 and the second filter 120 can be arranged between the two end covers 221 and 222.

[0044] Specifically, the filter further comprises a first filter sheet 131 arranged at a first end of the filter assembly and a second filter sheet 132 arranged at a second end of the filter assembly; the first filter sheet 131 comprises at least one of a ceramic filter sheet, a carbon fiber filter sheet, or a carbon filter sheet; the second filter sheet 132 comprises at least one of a ceramic filter sheet, a carbon fiber filter sheet, or a carbon filter sheet, and the first filter sheet 131 and the second filter sheet 132 are used to prevent particulate carbon from falling off.

[0045] Specifically, the first filter 110 and the second filter 120 and the third filter 130 can be arranged in series, as shown in Figure 1 and Figure 6 As shown, the water flow direction is taken as an example of the arrow direction in Figure 1 , the water flow flows through the first filter 110 and the second filter 120 in the radial direction in sequence, the first filter 110 and the second filter 120 and the third filter 130 can respectively dissolve different minerals, or the first filter 110 can dissolve zinc elements (the first filter 110 is a zinc-containing filter), the second filter 120 and the third filter 130 can be weak alkaline filters, when the water flow normally flows through the first filter 110 and the second filter 120 and the third filter 130, the zinc elements can be normally dissolved, because the water in the filter core cannot be drained when the water flow stops, the filter core is inevitably in a soaking state, and the remaining water in the filter core is the soaking water body, when the filter core is in the soaking state, if the soaking water body is conventional pure water (water filtered by an RO membrane), the amount of zinc elements dissolved in a certain period of time will exceed the safety limit value of the national standard, that is, the zinc content of the soaking water body does not meet the drinking standard, which is not conducive to human health. In the embodiment, the second filter 120 is arranged as an alkaline filter, so that the soaking water body is weakly alkaline, thereby inhibiting the excessive dissolution of zinc elements in the first filter 110, and the zinc concentration in the soaking water body also meets the national standard, which can avoid the zinc elements in the water body exceeding the set range under the soaking condition, and the mechanism of inhibiting the dissolution of zinc elements by soaking in alkaline water body can make the zinc elements normally dissolved when the water flow is normal (water flow is normal), and overcome the technical difficulty that the zinc-containing filter easily leads to excessive zinc elements when soaked.

[0046] Specifically, as the first optional combination scheme of the mineralization filter element, the second filter body 120 is a mineralization filter material capable of dissolving minerals, and the first filter body 110 or the third filter body 130 is a promoting filter material for promoting the mineralization filter material to dissolve minerals. The water path in the filter element can pass through the promoting filter material first and then pass through the mineralization filter material, so that the minerals in the mineralization filter material are promoted to dissolve, and the dissolution rate of the minerals is relatively fast, which can meet the needs of users in large-flow water use, that is, under a large flow, the content of the minerals can also meet the national standard or the industry standard, thereby avoiding the situation that the content of the mineralization substance is relatively low due to insufficient dissolution of the minerals. In specific applications, the promoting filter material can also be selectively connected in series upstream of the mineralization filter material. Of course, the first filter body 110 and the second filter body 120 connected in an inner-outer split manner can be arranged in the same cavity, and the water path can pass through the first filter body 120 and the second filter body 110 in sequence (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 respectively (i.e., the filter bodies are connected in parallel, such as shown in Figure 6 ).

[0047] In specific applications, the water flow can pass through the first filter body 110 and the second filter body 120 in sequence, the second filter body 120 is a mineralization filter material containing calcium and / or magnesium, and the first filter body 110 is an acidic filter material. The first filter body 110 includes a weakly acidic ore or is a weakly acidic ore, and the second filter body 120 includes an ore containing rich calcium and magnesium. The acidic substances dissolved by the first filter body 110 can promote the dissolution of calcium and magnesium elements in the second filter body 120.

[0048] Alternatively, as the second optional combination scheme of the mineralization filter element, the first filter body 110 is a mineralization filter material capable of dissolving minerals, and the second filter body 120 or the third filter body 130 is an anti-antagonistic filter material capable of inhibiting the dissolution of minerals in the mineralization filter material, that is, the second filter body 120 can dissolve anti-antagonistic substances for inhibiting the dissolution of mineralization substances in the first filter body 110. In some scenarios, when the filter bodies in the filter element are in a soaking state, the dissolution of some minerals can exceed the set standard, and if it is directly drunk, it is also not conducive to health. This combination scheme sets the anti-antagonistic filter material, so that the anti-antagonistic filter material can inhibit the dissolution of minerals in the mineralization filter material when needed, thereby preventing the content of the minerals from exceeding the corresponding safety standard. In this combination scheme, the first filter body 110 and the second filter body 120 connected in an inner-outer split manner can be arranged in the same cavity, the first filter body 110 can be arranged outside the second filter body 120, and the second filter body 120 can be in a cylindrical shape (such as shown in Figure 3 and Figure 4 ) or a solid columnar shape (such as shown in Figure 5 and Figure 6The first filter body 110 is a weak alkaline filter material, and the second filter body 120 is a strong alkaline filter material. The weak alkaline filter material and the strong alkaline filter material can be relative concepts, that is, the alkalinity of the second filter body 120 is higher than that of the first filter body 110. In a specific application, the strong alkaline filter material (made of strong alkaline material) such as brucite has a chemical composition of Mg(OH)2 and can directly release (dissolve) OH - (Reaction a: Mg(OH)2=Mg 2+ +2OH - ) in water to increase the alkalinity of the water. The weak alkaline filter material (made of weak alkaline material) such as calcite has a chemical composition of CaCO3 and needs to release CO3 2- (Reaction b: CaCO3=Ca 2+ +CO3 2- ) in water first, and then CO3 2- undergoes a hydrolysis reaction with H2O to generate OH (Reaction c: - ). The strong alkaline material only needs one step to obtain OH - , while the weak alkaline material needs two steps to obtain OH - . Moreover, the rate of reaction c is much lower than that of reaction a, so the strong alkaline material preferentially releases OH - . Reaction c is a reversible reaction, and when reaction a preferentially occurs, the chemical equilibrium of reaction c moves to the left, so the strong alkaline material can inhibit the release of OH - from the weak alkaline material. In this combination, the strong alkaline material and the weak alkaline material are combined and assembled into an inner-outer split structure, and the strong alkaline material and the weak alkaline material can be assembled in the same filter core. The inhibitory effect of the strong alkaline material on the weak alkaline material can be utilized, and in the service life of the filter core, the strong alkaline material releases OH - in the early stage, and releases OH - with the weak alkaline material in the middle and late stages., both can synergistically work, so that the life of the filter core can be greatly improved, thereby realizing the long life of the filter core. In specific applications, the strong alkaline filter body and the weak alkaline filter body can be provided with one, two or more, of course, it can also be combined with medium alkaline material, that is, two or more alkaline filter bodies are arranged along the radial direction of the filter core, for example, a first alkaline filter body, a second alkaline filter body and a third alkaline filter body are arranged along the radial direction from the outside to the inside, the alkalinity of the first alkaline filter body is greater than that of the second alkaline filter body, and the alkalinity of the second alkaline filter body is greater than that of the third alkaline filter body. Alternatively, in specific applications, the first filter body 110 is a zinc mineralized filter material or a copper mineralized filter material, that is, the first filter body 110 is a zinc-containing or / and copper-containing mineralized filter material, and the second filter body 120 is an alkaline filter material; the alkaline substances dissolved from the second filter body 120 (alkaline filter material) can inhibit the dissolution of zinc and copper elements in the first filter body 110. Specifically, the dissolution reaction of zinc element (zinc-containing filter body, such as zinc spar) in water: ZnCO3=Zn 2+ +CO3 2- ; under general conditions (pure water obtained after RO membrane filtration), Zn 2+ The saturation solubility when immersed in water can reach 6.0 mg / L, which is much higher than the limit value of 1.0 mg / L of the national standard; when the water quality does not change, Zn 2+ and CO3 2- are dissolved synchronously, the concentration of CO3 2- is controlled at the lowest level, so that the saturation dissolution concentration of Zn 2+ is controlled at the lowest level; from the equilibrium diagram of H2CO3-HCO3 - -CO3 2- in water, when the pH value is about 8.3, the concentration of CO3 2- is at the lowest level, at this time, the immersion water concentration of Zn 2+ is also at the lowest level, which is 0.36 mg / L in theoretical calculation, which meets the standard limit value; that is, by adjusting the pH value of the water immersed in the zinc-containing filter body to about 8.3, the concentration of Zn 2+ can be accurately controlled between 0.2-1.0 mg / L.

[0049] Alternatively, as the third optional combination scheme of the mineralized filter core, the first filter body 110 is a mineralized filter material for adjusting the pH value of the water, and the second filter body 120 or the third filter body 130 is a neutralization filter material for neutralizing the pH value of the water. The mineralized filter material of the first filter body 110 can increase the pH value of the water, and in specific applications, the pH value of the water can be adjusted by the water flow rate, and the second filter body 120 is used to neutralize the pH value of the water, such as Figure 3 and Figure 5As shown, the first filter 110 and the second filter 120 can be connected in parallel in the water path, and the PH value of the overall water outlet can be stabilized within the set PH range (generally 7.0 to 9.0) by adjusting the water flow of the first filter 110 and the second filter 120 respectively.

[0050] In specific applications, as the fourth optional combination scheme of the mineralization filter, the first filter 110 is a first mineralization filter material capable of dissolving out a first mineral substance, the second filter 120 is a second mineralization filter material capable of dissolving out a second mineral substance, and the third filter 130 is a second mineralization filter material capable of dissolving out the first mineral substance; the first filter 110, the second filter 120, and the third filter 130 are used in combination to provide different mineral substances, and of course, a fourth mineralization filter or the like can be provided to form a filter structure with more abundant mineral substances. In this combination, a filter with abundant mineral substances can be formed, and through the combination and collocation of the filters, the high-end demand of users for healthy drinking water can be better met.

[0051] In specific applications, as the fifth optional combination scheme of the mineralization filter, the first filter 110 is a first mineralization filter material capable of dissolving out a first mineral substance, and the second filter 120 is a non-mineralization filter material, i.e., the second filter 120 can be a pure carbon rod or a ceramic filter or the like, used for adsorbing larger impurities and removing odors.

[0052] In specific applications, as the sixth optional combination scheme of the mineralization filter, the first filter 110 is an alkaline filter material (weakly alkaline), and the second filter 120 is a metasilicic acid filter material. Metasilicic acid (H2SiO3) can be generated by the hydrolysis reaction of silicate ore in water, and sodium silicate (Na2SiO3) is taken as an example, However, metasilicic acid and orthosilicic acid (H4SiO4) are in dynamic equilibrium. Orthosilicic acid has strong acidity and can exist stably in an acidic environment. Therefore, an alkaline environment moves the equilibrium of to the left, i.e., the content of orthosilicic acid decreases, and the concentration of metasilicic acid increases. However, too high alkalinity will inhibit the hydrolysis of silicate ions, thereby reducing the generation of metasilicic acid. Therefore, appropriate alkalinity can promote the formation of metasilicic acid. In specific applications, by making the water flow through the first filter 110 and the second filter 120 in sequence, the dissolution (dissolution) of metasilicic acid can be promoted, and the content of metasilicic acid can reach the set standard.

[0053] In specific applications, the first filter 110 includes at least one of brucite and sepiolite; the second filter 120 includes at least one of calcite and brucite; and the third filter 130 includes at least one of calcite and brucite.

[0054] Alternatively, the first filter body 110 may include at least one of smithsonite and malachite; the second filter body 120 may include at least one of brucite, sepiolite, and calcite; and the third filter body 130 may include at least one of calcite and brucite.

[0055] Alternatively, the first filter body 110 may include at least one of amphibole, magnesium ore, and dolomite; the second filter body 120 may include at least one of brucite, sepiolite, and calcite; and the third filter body 130 may include at least one of calcite.

[0056] Alternatively, the first filter element 110 may include at least one of amphibole, magnesium ore, and dolomite; the second filter element 120 may include at least one of iron ore and silicate ore; and the third filter element 130 may include at least one of iron ore and silicate ore.

[0057] Specifically, the first filter body 110 is cylindrical and has an opening at one or both ends, and the third filter body 130 is cylindrical or columnar.

[0058] like Figure 7 As shown, the first filter body 110 is cylindrical with openings at both ends, the third filter body 130 is cylindrical with openings at both ends, and the filter element also includes a first end cap 221 and a second end cap 222. The first end cap 221 is sealed at one end of the filter body assembly, and the second end cap 222 is sealed at the other end of the filter body assembly.

[0059] In specific applications, the first filter element 110 and the third filter element 130 include 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.

[0060] This embodiment also provides a filter element design method for designing the aforementioned filter element, including a filter body assembly. The filter body assembly includes a first filter body 110, a second filter body 120, and a third filter body 130, which are arranged sequentially. The second filter body 120 is disposed between the first filter body 110 and the third filter body 130. The second filter body 120 includes granular carbon. 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.

[0061] 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 (granular carbon mixed with strongly alkaline substances), 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 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.

[0062] 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.

[0063] In specific applications, such as Figure 5 As shown, the filter elements are connected in parallel, as follows:Figure 6 As shown in the figure, the filter bodies are arranged in series. Of course, in specific applications, the number of filter bodies, the series connection of each filter body, and the parallel connection relationship can be set according to actual conditions.

[0064] As shown in the figure, the filter cartridge is taken as an example in which the filter core includes two filter bodies (a first filter body 110 and a second filter body 120). Figure 7

[0065] Specifically, the cartridge shell 210 can be provided with a series water channel structure for water to flow through the first filter body 110, the second filter body 120, and the third filter body 130 in sequence. The series water channel structure can flow through the first filter body 110, the second filter body 120, and the third filter body 130 in sequence from the radial direction. In specific applications, the series water channel structure can enter the filter cartridge from the bottom of the cartridge shell 210, flow upward along the inner side of the filter cartridge, and then flow out of the filter cartridge outlet to the filter cartridge water outlet pipeline 320 from the radial direction after the first filter body 110, the second filter body 120, and the third filter body 130.

[0066] Alternatively, the cartridge shell 210 is provided with a parallel water channel structure for water to flow through the first filter body 110, the second filter body 120, and the third filter body 130 respectively. The first filter body 110 and the second filter body 120 can be separated by a central partition pipe, and the second filter body 120 and the third filter body 130 can be separated by a central partition pipe. The parallel water channel structure can have three branch water channels and flow through the first filter body 110, the second filter body 120, and the third filter body 130 from the axial direction to meet the needs of different scenarios.

[0067] The utility model also provides a mineral spring water purifier, the mineral spring water purifier includes above -mentioned filter core, or, the mineral spring water purifier includes above -mentioned filter cartridge. Including filter body assembly, the filter body assembly includes first filter body 110, second filter body 120 and third filter body 130, first filter body 110, second filter body 120 and third filter body 130 arrange in turn and the second filter body 120 is arranged between the first filter body 110 and the third filter body 130, the second filter body 120 includes granular carbon. Granular carbon is granular, microporous, high mechanical strength, adsorption speed is fast, purification degree is high, and it is not easy to take off powder, and service life is long. The preparation method of granular carbon is mainly divided into two categories: one is to activate carbon without adding binder; two is to add binder to process carbon precursor into shape, and then activate carbon. When preparing granular carbon, mineralizers can be added to make granular carbon have mineralization effect, which is beneficial to meet people's high-end demand for drinking water equipment to meet the health benefits.

[0068] In specific applications, the cartridge shell 210 can be cylindrical, and its interior is a filter core chamber for installing the above-mentioned mineralization filter core.

[0069] ​As the first optional application scheme, the first filter 110 can be a strong alkaline filter, the second filter 120 can be a weak alkaline filter, and the first filter 110 and the second filter 120 are connected in series in the water circuit. The strong alkaline material can inhibit the weak alkaline material. In the service life of the filter element, the strong alkaline filter releases OH - in the early stage, and releases OH - in the middle and late stages together with the weak alkaline filter. The two can work together to release OH - above the set range in the entire life span, so that the service life of the filter element is greatly improved, thereby realizing long service life of the filter element.

[0070] As the second optional application scheme, the first filter 110 can be a zinc-containing filter, and the second filter 120 can be an alkaline filter (preferably a weak alkaline filter). The first filter 110 and the second filter 120 are connected in series in the water circuit. The water flows through the zinc-containing filter first, and then flows through the alkaline filter. The alkaline material can inhibit the dissolution of zinc elements to prevent excessive dissolution of zinc elements. The dissolution reaction of zinc elements (zinc-containing filter, such as zincite) in water is: ZnCO3 = Zn 2+ + CO3 2- Under general conditions (pure water obtained after RO membrane filtration), the saturation solubility of Zn 2+ in water when soaked is up to 6.0 mg / L, which is much higher than the limit value of 1.0 mg / L in the national standard. When the water quality remains unchanged, Zn 2+ and CO3 2- are dissolved synchronously. By controlling the concentration of CO3 2- at the lowest level, the saturation dissolution concentration of Zn 2+ can be controlled at the lowest level. According to the equilibrium diagram of H2CO3-HCO3 - -CO3 2- in water, when the pH value is about 8.3, the concentration of CO3 2- is at the lowest level, and the soaking water concentration of Zn 2+ is also at the lowest level, which is theoretically calculated as 0.36 mg / L, meeting the standard limit value. That is, by adjusting the pH value of the water soaked in the zinc-containing filter to about 8.3, the concentration of Zn 2+ can be accurately controlled between 0.2-1.0 mg / L. Based on similar principles, the first filter 110 can be a copper-containing filter, and the second filter 120 can be an alkaline filter (preferably a weak alkaline filter), so that the dissolution of copper elements can also be controlled within a set range.

[0071] As the third optional application scheme, the first filter body 110 includes different content of alkaline ore, the second filter body 120 includes different content of calcium and magnesium ore, the first water flow channel and the second water flow channel are connected in parallel, and the concentration of different mineralized elements dissolved is adjusted by controlling the different flow rates of water flow in the first water flow channel and the second water flow channel.

[0072] In specific applications, the mineral spring water purifier can be provided with one or at least two filter cartridges described above. When the filter cartridges are provided with two or more than two, at least two filter cartridges can be connected in series or in parallel. In specific applications, the filter cartridge (mineralization filter cartridge) described above can be connected in parallel with a non-mineralization filter cartridge or a pure water waterway, and the parallel waterway can be provided with a flow valve to adjust the mineral content / PH value of the outlet water within a set range.

[0073] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A filter element, characterized in that, The system includes a filter assembly comprising a first filter, a second filter, and a third filter, which are arranged sequentially, with the second filter disposed between the first filter and the third filter; the second filter comprises granular carbon. The first filter body has a mineralized filter material that can precipitate minerals, and the second or third filter body has a promoting filter material for promoting the precipitation of minerals from the mineralized filter material. Alternatively, the first filter body has a mineralized filter material that can precipitate minerals, and the second or third filter body has an anti-antagonistic filter material that can inhibit the precipitation of minerals from the mineralized filter material. Alternatively, the first filter body has mineralized filter media for adjusting the pH value of the water, and the second or third filter body has neutralizing filter media for neutralizing the pH value of the water; Alternatively, the first filter body has a first mineralized filter material capable of precipitating a first mineral, and the second or third filter body has a second mineralized filter material capable of precipitating a second mineral.

2. The filter element as described in claim 1, characterized in that, The first filter body is cylindrical, and the third filter body is cylindrical or columnar. The first filter body is sleeved on the outside of the third filter body, and there is a sandwich cavity between the inner side of the first filter body and the outer side of the third filter body; the particulate carbon is filled in the sandwich cavity.

3. The filter element as described in claim 2, characterized in that, The filter element further includes a first end cap and a second end cap, the first end cap being connected to a first end of the filter body assembly, and the second end cap being connected to a second end of the filter body assembly.

4. The filter element as described in claim 3, characterized in that, The first end cap is provided with a first water inlet and / or a first water outlet; And / or, the second end cap is provided with a second water inlet and / or a second water outlet.

5. The filter element as described in claim 1, characterized in that, A first isolation tube is provided between the first filter body and the second filter body; And / or, a second isolation tube is provided between the second filter body and the third filter body.

6. The filter element as described in claim 1, characterized in that, The filter body further includes a first filter element and a second filter element, wherein the first filter element is disposed at a first end of the filter body assembly and the second filter element is disposed at a second end of the filter body assembly; the first filter element includes at least one of a ceramic filter element, a carbon fiber filter element, or a carbon filter element; and the second filter element includes at least one of a ceramic filter element, a carbon fiber filter element, or a carbon filter element.

7. The filter element according to any one of claims 1 to 6, characterized in that, The first filter body includes a substrate, which is a carbon rod filter body, a ceramic filter body, a carbon fiber filter body, or granular carbon. And / or, the third filter body includes a substrate, which is a carbon rod filter body, a ceramic filter body, a carbon fiber filter body, or granular carbon.

8. A filter cartridge, characterized in that, The system includes a housing and a filter element as described in any one of claims 1 to 7, wherein the filter element is disposed within the housing. 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.

9. A mineral water purifier, characterized in that, The mineral water purifier includes a filter element as described in any one of claims 1 to 7, or the mineral water purifier includes a filter cartridge as described in claim 8.

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