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 and the second filter body are arranged along the axial direction; the first filter body comprises a water permeable piece and granular carbon, the water permeable piece is provided with a filling cavity, or a filling cavity is formed between the water permeable piece and the second filter body, and the filling cavity is filled with the granular carbon. The filter cartridge comprises a cartridge shell and the filter element, and the filter element is arranged in the cartridge shell. The mineral spring water purifier comprises the filter element or the filter cartridge. The filter element, the filter cartridge and the mineral spring water purifier provided by the utility model can meet different use requirements, so that the water body contains mineral components beneficial to human health, and the 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 also 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 first filter body and second filter body, first filter body or / and second filter body is mineralization filter body, first filter body, second filter body sets up along the axial direction, first filter body includes water -permeable spare and granular carbon, water -permeable spare has filling cavity, or, water -permemeble spare with second filter body forms filling cavity between, granular carbon fills in filling cavity.

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

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

[0007] The first connecting portion, the second connecting portion, the outer partition layer and the inner partition layer jointly form the filling cavity, and the second filter body is connected to the other side of the first connecting portion.

[0008] Optionally, the other side of the second connecting portion is provided with a third filter body.

[0009] Optionally, the first filter body is in the shape of a cylinder or a column, and the second filter body is in the shape of a cylinder or a column.

[0010] Optionally, the water permeable member is a metal cage or a plastic cage.

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

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

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

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

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

[0016] The utility model also provides a filter cartridge, including shell and above-mentioned filter core, the filter core sets up in the shell,

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

[0018] The utility model also provides a mineral spring water purifier, which comprises the filter core or the filter cartridge.

[0019] The filter core, the filter cartridge and the mineral spring water purifier provided by the utility model have the mineralization filter core, at least two different first filter bodies and second filter bodies are arranged in the mineralization filter core, the first filter body and the second filter body are arranged in the axial direction, the first filter body includes the water permeable member and the granular carbon, the water permeable member has the filling cavity, or the filling cavity is formed between the water permeable member and the second filter body, the granular carbon is filled in the filling cavity, the waterway can pass through the first filter body and the second filter body in sequence (i.e., the filter bodies are connected in series), or the waterway can pass through the first filter body and the second filter body respectively (i.e., the filter bodies are connected in parallel), so that different use requirements are met, the water body contains the mineral substance component beneficial to human health, and the high-end demand of users for drinking water meeting the beneficial health is met. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1A cross-sectional view of a filter element provided for an embodiment of the present utility model (the filter elements are connected in series along the axial direction of the water path);

[0021] Figure 2 A cross-sectional view of a filter element provided for an embodiment of the present utility model (the filter elements are connected in parallel along the transverse direction of the water path);

[0022] Figure 3 A cross-sectional view of a filter element provided for an embodiment of the present utility model (the filter elements are connected in parallel along the axial direction of the water channel);

[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 (particulate carbon is in the upper part of the filter element);

[0027] Figure 8 This is a cross-sectional view of a filter element provided in an embodiment of the present invention (particulate carbon is in the lower part of the filter element). 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] In addition, in the embodiments of the present application, 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., they are 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 present application and simplifying the description, and does not indicate or imply that the structures, features, devices or elements referred to 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 present application. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0031] 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 each specific technical feature / embodiment in the present application are not described again.

[0032] The utility model provides a kind of filter element, as shown in Figures 1 to 8 The first filter body 110 or / and the second filter body 120 is mineralization filter body;The first filter body 110, the second filter body 120 is arranged along the axial direction;The first filter body 110 includes water-permeable part and granular carbon, the water-permeable part has filling cavity, alternatively, filling cavity is formed between the water-permeable part and the second filter body 120, and the granular carbon is filled in the filling cavity.Granular carbon is granular, with small flow resistance, developed micropore, high mechanical strength, fast adsorption speed, high purification degree, not easy to powder, long service life.Granular carbon preparation method is mainly divided into two categories: one, without adding binder directly carbon activation;Two, add binder to make carbonaceous precursor into shape, then carbon activation process.Granular carbon can be prepared by adding mineralization 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 benefit.Through setting two different first filter body 110 and second filter body 120, different use requirements can be met, the filter element provided by the embodiment is mineralization filter element, at least two different first filter body 110 and second filter body 120 are arranged in the mineralization filter element, so that the water contains mineral composition beneficial to human health, which is beneficial to meet the high-end demand of users on drinking water to meet the health benefit.

[0033] In specific applications, the mineralized filter element can be used in cooperation with a conventional filter element, i.e., the mineralized filter element can be arranged downstream of the filter element, and the pure water formed by the filter element passes through the mineralized filter element, and the mineralized filter element can dissolve appropriate amounts of minerals in the water body, so that the drinking water supplied to the user has appropriate amounts of minerals, which is beneficial to the health of the user.

[0034] Specifically, as shown in Figure 7 and Figure 8 , the water-permeable member is a water-permeable support, which is in the shape of a hollow cylinder, and includes an outer partition layer 141 and an inner partition layer 142, which can be in the shape of a cylinder with different diameters and the same height, and the filling cavity is formed between the outer partition layer 141 and the inner partition layer 142.

[0035] Optionally, the water-permeable support further includes a first connecting portion 143 and a second connecting portion 144, one side of the first connecting portion 143 is connected to the first end of the outer partition layer 141 and the first end of the inner partition layer 142, and one side of the second connecting portion 144 is connected to the second end of the outer partition layer 141 and the second end of the inner partition layer 142; the first connecting portion 143, the second connecting portion 144, the outer partition layer 141 and the inner partition layer 142 jointly form the filling cavity, and the second filter body is connected to the other side of the first connecting portion 143. The outer shape of the water-permeable support can be in the shape of a hollow cylinder with a sandwiched layer. The water-permeable member can be a metal cage or a plastic cage, and the mesh size of the water-permeable member is smaller than the particle size of the granular carbon.

[0036] Specifically, the other side of the second connecting portion 144 can be provided with a third filter body to meet different application scenarios.

[0037] Specifically, the filter bodies can be arranged in series, and taking the case where two filter bodies (i.e., the first filter body 110 and the second filter body 120) are provided as an example, as shown in Figure 1As shown in the figure, taking the direction of water flow as an example (arrow direction), the first filter body 110 and the second filter body 120 can be fixed by bonding or other suitable methods. The water flows axially through the first filter body 110 and the second filter body 120 in sequence. The first filter body 110 and the second filter body 120 can dissolve different minerals respectively. Alternatively, the first filter body 110 can dissolve zinc (the first filter body 110 is a zinc-containing filter body), and the second filter body 120 can be a weakly alkaline filter body. When the water flows normally through the first filter body 110 and the second filter body 120, the zinc can dissolve normally. Since the water cannot be drained when the water flow stops, the filter body is inevitably in a soaking state. The water remaining in the filter body is the soaking water. When the filter body 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 conducive to 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.

[0038] Specifically, as a first optional combination scheme for the mineralized filter cartridge, the first filter body 110 is a mineralized filter material capable of dissolving minerals, and the second filter body 120 is a promoting filter material used to facilitate the dissolution of minerals from the mineralized filter material. The water in the filter cartridge can first pass through the promoting filter material and then through the mineralized filter material; that is, the water flow can also first pass through the second filter body 120 and then through the first filter body 110. This promotes the dissolution of minerals in the mineralized filter material, resulting in a faster dissolution rate that can meet the needs of users with high-flow-rate water usage. In other words, even at high flow rates, the mineral content can still meet national or industry standards, avoiding insufficient mineral dissolution leading to low mineral content. In specific applications, the promoting filter material can also be selectively connected in series upstream of the mineralized filter material. Of course, the first filter element 110 and the second filter element 120 can be housed in the same cavity, and the water path can pass through the second filter element 120 and the first filter element 110 sequentially (i.e., the filter elements are connected in series), or the water path can pass through the second filter element 120 and the first filter element 110 separately (i.e., the filter elements are connected in parallel, such as...). Figures 2 to 4 (As shown), to meet different usage needs. In specific applications, the first filter body 110 is a mineralized filter material containing calcium and / or magnesium, and the second filter body 120 is an acidic filter material. The second filter body 120 includes weakly acidic ore or is a weakly acidic ore, and the first filter body 110 includes ore rich in calcium and magnesium. The acidic substances dissolved from the second filter body 120 can promote the dissolution of calcium and magnesium elements from the first filter body 110.

[0039] Alternatively, as a second alternative combination of the mineralization filter element, the first filter body 110 is a mineralization filter material that can dissolve minerals, and the second filter body 120 is an anti-antagonistic filter material that can inhibit the dissolution of minerals from the mineralization filter material, i.e., the second filter body 120 can dissolve anti-antagonistic substances for inhibiting the dissolution of minerals from the first filter body 110. In some scenarios, when the filter element is in a soaking state, the dissolution of some minerals may exceed the set standard, and if directly consumed, it is also not conducive to health. This combination scheme sets the anti-antagonistic filter material, which can inhibit the dissolution of minerals from the mineralization filter material when needed, thereby preventing the content of minerals from exceeding the corresponding safety standards. In this combination scheme, the first filter body 110 and the second filter body 120 fixedly connected along the axial direction can be arranged in the same cavity, and the first filter body 110 can be arranged above the second filter body 120. Due to the reasons such as the gas (stuck gas) contained in the filter element when the filter element is soaked, the first filter body 110 is not fully soaked, i.e., the liquid level in the filter cartridge can not submerge the first filter body 110, and the dissolution of minerals in the first filter body 110 can be reduced during soaking. In addition, the second filter body 120 can be fully soaked under the liquid level, and the dissolution of anti-antagonistic substances can be sufficient to inhibit the dissolution of minerals in the first filter body 110. In specific applications, the first filter body 110 is a weak alkaline filter material, and the second filter body 120 is a strong alkaline filter material. The strength of alkalinity between the weak alkaline filter material and the strong alkaline filter material can be a relative concept, i.e., the alkalinity of the second filter body 120 is higher than that of the first filter body 110. In specific applications, the strong alkaline filter material (made of strong alkaline material), such as brucite, has a chemical composition of Mg(OH)2, which can directly release (dissolve) OH - (reaction a: Mg(OH)2=Mg 2+ +2OH - ) in water to increase the alkalinity of water, while the weak alkaline filter material (made of weak alkaline material), such as calcite, has a chemical composition of CaCO3, which 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 reaction to obtain OH - , while the weak alkaline material needs two steps reaction to obtain OH - , and 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 OH -The strong alkaline material and the weak alkaline material are arranged separately and form an axially fixed structure in the combination, and the strong alkaline material and the weak alkaline material can be assembled in the same filter core. The inhibition of the strong alkaline material on the weak alkaline material can be utilized. In the service life of the filter core, the strong alkaline material releases OH - in the early stage, and releases OH - together with the weak alkaline material in the middle and late stages. The two can work together to greatly improve the service life of the filter core, thereby realizing long service 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 than two, of course, the medium alkaline material can also be provided together, that is, two or more than two alkaline filter bodies are arranged along the axial 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 axial direction from top to bottom, 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 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 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, and the saturation dissolution concentration of Zn 2+ is also 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, and at this time, the soaking water concentration of Zn 2+ is also at the lowest level, which is theoretically calculated as 0.36 mg / L, which meets the standard limit value; that is, by adjusting the pH value of the water soaked 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.

[0040] Alternatively, as the third alternative combination of the mineralization filter core, the first filter 110 is a mineralization filter for adjusting the PH value of the water quality, and the second filter 120 is a neutralization filter for neutralizing the PH value of the water quality. The mineralization filter of the first filter 110 can increase the PH value of the water quality, and in specific applications, the PH value of the water quality can be adjusted by the water flow rate. The second filter 120 is used to neutralize the PH value of the water quality, as shown in Figure 2 、 Figure 3 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.

[0041] In specific applications, as the fourth alternative combination of the mineralization filter core, the first filter 110 is a first mineralization filter that can dissolve the first mineral, and the second filter 120 is a second mineralization filter that can dissolve the second mineral. The first mineralization filter and the second mineralization filter are used in combination to provide different minerals, and of course, a third mineralization filter and a fourth mineralization filter can also be provided to form a filter core structure with more minerals. In this combination, a filter core with rich mineral substances can be formed, and through the combination of each filter, the high-end demand of users for healthy drinking water can be better met.

[0042] In specific applications, as the fifth alternative combination of the mineralization filter core, the first filter 110 is a first mineralization filter that can dissolve the first mineral, and the second filter 120 is a non-mineralization filter, i.e. the second filter 120 can be a pure carbon rod or a ceramic filter, etc., used to adsorb larger impurities and remove odors, and to simultaneously realize the functions of mineralizing water quality and adsorbing and removing odors in the same filter core.

[0043] In specific applications, as the sixth alternative combination of the mineralization filter core, the first filter 110 is an alkaline filter (weakly alkaline), and the second filter 120 is a metasilicate filter. 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, there is a dynamic balance between metasilicic acid and orthosilicic acid (H4SiO4). Orthosilicic acid has strong acidity and can exist stably in an acidic environment. Therefore, the alkaline environment moves the balance 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, and 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.

[0044] In specific applications, the first filter 110 is a calcium-containing or magnesium-containing mineralized filter material, and the second filter 120 is an alkaline filter material; in specific applications, the second filter 120 has different contents of alkaline minerals, and the first filter 110 has different contents of calcium and magnesium minerals, the first water flow channel flows through the first alkaline minerals of the second filter 120 and the first filter 110, and the second water flow channel flows through the second alkaline minerals of the second filter 120 and the first filter 110, and the first water flow channel and the second water flow channel can adjust the concentration of different mineralized elements dissolved by different flow rates.

[0045] In specific applications, the first filter 110 includes at least one of brucite and sepiolite; and the second filter 120 includes at least one of calcite and brucite.

[0046] Alternatively, the first filter 110 includes at least one of smithsonite and malachite; and the second filter 120 includes at least one of brucite, sepiolite, calcite, and brucite.

[0047] Alternatively, the first filter 110 includes at least one of hornblende, magnesium minerals, and dolomite; and the second filter 120 includes at least one of brucite, sepiolite, calcite, and brucite.

[0048] Alternatively, the first filter 110 includes at least one of hornblende, magnesium minerals, and dolomite; and the second filter 120 includes at least one of iron minerals and silicate minerals.

[0049] Specifically, the first filter 110 and the second filter 120 are in the shape of a cylinder or a column; the first filter 110 and the second filter 120 can be in the shape of a cylinder, a polygonal column, a circular truncated cone, etc.

[0050] Specifically, the second filter 120 can be in the shape of a cylinder or a column, etc. In specific applications, the second filter 120 includes a base body, which can be a carbon rod filter or a ceramic filter, etc.; the mineralized filter material, the promoting filter material, the antagonistic filter material, or the neutralizing filter material is dispersed in the base body or attached to the surface of the base body. Alternatively, the mineralized filter material, the promoting filter material, the antagonistic filter material, or the neutralizing filter material can also be arranged inside the base body.

[0051] Specifically, the base material of the first filter 110 can be any one of a carbon rod filter, a ceramic filter, a carbon fiber roll, and carbon particles; and the base material of the second filter 120 can be any one of a carbon rod filter, a ceramic filter, a carbon fiber roll, and carbon particles.

[0052] Specifically, the mineralized filter material, the promoting filter material, the antagonistic filter material, or the neutralizing filter material is dispersed in the base material or attached to the surface of the base material.

[0053] This embodiment also provides a filter element design method for designing the aforementioned filter element. As a first 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 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 fixed together in an axially arranged structure. The strongly alkaline and weakly alkaline filter elements can be assembled within the same filter housing. The inhibitory effect of the strongly alkaline filter element on the weakly alkaline filter element can be utilized. During the entire service life of the filter element, the strongly alkaline material releases OH- in the early stages. - In the middle and later stages, it releases OH- along with weakly alkaline materials. - The two can work together to greatly extend the lifespan of the filter element, thus achieving a longer filter element lifespan.

[0054] 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.

[0055] In specific applications, such as Figure 4As shown, each filter is arranged in parallel, such as Figure 5 As shown, each filter is arranged in series. Of course, in specific applications, the number of filters, the series and parallel relationship of each filter can also be set according to the actual situation. In specific applications, the series and parallel of the first filter 110 and the second filter 120 can be switched, that is, by setting a switching structure in the filter cartridge or the waterway plate, the switching of the series and parallel of the first filter 110 and the second filter 120 can also be realized, further enriching the selectability of the mineralized water, and being able to adapt to more application scenarios.

[0056] As shown in the filter cartridge, Figure 7 As shown, the filter cartridge takes the filter core including two filters (the first filter 110 and the second filter 120) as an example.

[0057] Specifically, the cartridge shell 210 can be provided with a series waterway structure for water to flow through the first filter 110 and the second filter 120 in sequence. The series waterway structure can flow through the first filter 110 and the second filter 120 in sequence from the axial direction. In specific applications, the series waterway structure can enter the filter cartridge from the bottom of the cartridge shell 210, flow upward along the inside of the filter cartridge, and then flow out from the filter cartridge outlet to the filter cartridge outlet pipeline 320 after the first filter 110 and the second filter 120.

[0058] Alternatively, the cartridge shell 210 is provided with a series waterway structure for water to flow through the second filter 120 and the first filter 110 in sequence.

[0059] Alternatively, as shown, Figure 4 The cartridge shell 210 is provided with a parallel waterway structure for water to flow through the first filter 110 and the second filter 120, respectively. The parallel waterway structure can have two branch waterways and flow through the first filter 110 and the second filter 120 from the radial direction to meet different use requirements. In specific applications, each branch waterway can be provided with a control valve or a flow valve, and the filter cartridge can be connected to the waterway plate. The waterway plate has a control waterway corresponding to each branch waterway. The control waterway controls the valve or the flow valve to control the amount of water flowing through each filter (the first filter 110 and the second filter 120) to obtain the required drinking water.

[0060] In a specific application, the filter core comprises filter bodies (the first filter body 110, the second filter body 120, and the like), and further comprises a first end cover 221 and a second end cover 222, which are arranged at the upper and lower ends of the filter core respectively, and the first filter body 110 and the second filter body 120 can be in a cylindrical shape. In a specific application, the first end cover 221 or / and the second end cover 222 can be provided with overflow holes, and the first filter body 110 and the second filter body 120 can be in a columnar shape. Alternatively, the filter core can further comprise an encapsulation shell, and each filter body (the first filter body 110, the second filter body 120, and the like) can be encapsulated in the encapsulation shell, and the encapsulation shell can be arranged in the barrel shell 210 of the filter cartridge. The two ends of the encapsulation shell are provided with series waterway holes, and the waterway flows through the first filter body 110 and the second filter body 120 in sequence or through the second filter body 120 and the first filter body 110 in sequence along the series waterway holes in the axial direction; or the side surface of the encapsulation shell is provided with two groups of radial parallel waterway holes, and two branch waterways flow through the first filter body 110 and the second filter body 120 respectively.

[0061] The utility model further provides a kind of mineral water purifier, the mineral water purifier includes above-mentioned filter core, alternatively, the mineral water purifier includes above-mentioned filter cartridge. By being provided with at least two different first filter body 110 and second filter body 120 in filter core, different use needs can be met, and the filter core provided in the embodiment is mineralization filter core, at least two different first filter body 110 and second filter body 120 are arranged in the mineralization filter core, so that water body contains mineral substance component beneficial to human health, and it is beneficial to meet the high-end needs of user to drinking water to meet beneficial health.

[0062] In a specific application, the barrel shell 210 can be in a (circular) cylindrical shape, and the inside is a filter core chamber for mounting the above-mentioned mineralization filter core, and the first filter body 110 and the second filter body 120 are arranged in the axial direction of the barrel shell 210.

[0063] As one of the first optional application schemes, the first filter body 110 can be a strong alkaline filter body, and the second filter body 120 can be a weak alkaline filter body, and the first filter body 110 and the second filter body 120 are connected in a series waterway, so that the inhibitory effect of strong alkaline material on weak alkaline material can be utilized, and in the service life of the entire filter core, the strong alkaline filter body releases OH - in the early stage, and releases OH - with the weak alkaline filter body in the middle and late stages, and the two can synergistically release OH - above the set range in the entire life span, so that the service life of the filter core can be greatly improved, thereby realizing long service life of the filter core.

[0064] 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 a series water path. The water flows through the zinc-containing filter first, and then flows through the alkaline filter. The inhibitory effect of the alkaline material on zinc can be used to prevent excessive dissolution of zinc. The dissolution reaction of zinc (zinc-containing filter, such as zincite) in water is: ZnCO3 = Zn 2+ + CO3 2- Under normal conditions (pure water obtained after RO membrane filtration), Zn 2+ has a saturated solubility of up to 6.0 mg / L, which is much higher than the limit 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 saturated 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 concentration of Zn 2+ in the soaked water is also at the lowest level, which is theoretically calculated to be 0.36 mg / L, meeting the standard limit. 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 within 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), and the dissolution of copper can also be controlled within a set range.

[0065] As the third optional application scheme, the first filter 110 includes different amounts of alkaline ore, and the second filter 120 contains different amounts of calcium and magnesium ore. The first water flow channel and the second water flow channel are connected in parallel, and the concentrations of different mineralized elements are adjusted by controlling the flow rates of the water in the first water flow channel and the second water flow channel.

[0066] In specific applications, the mineral water purifier can be provided with one or at least two filter cartridges described above. When the filter cartridges are provided in two or more, at least two filter cartridges can be connected in series or in parallel. In specific applications, the filter cartridges (mineralized filter cartridges) described above can be connected in parallel with non-mineralized filter cartridges or pure water paths. The parallel water path can be provided with a flow valve to adjust the mineral content / PH value of the outlet water within a set range.

[0067] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and 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 cartridge, characterized by, The filter core comprises a first filter body and a second filter body, wherein the first filter body or / and the second filter body is a mineralization filter body; the first filter body and the second filter body are arranged along an axial direction; the first filter body comprises a water-permeable member and granular carbon, the water-permeable member has a filling cavity, or the water-permeable member and the second filter body form a filling cavity therebetween, and the granular carbon is filled in the filling cavity.

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

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

4. The filter cartridge of claim 3 wherein, The other side of the second connecting portion is provided with a third filter body.

5. The filter cartridge of claim 1 wherein, The first filter body is in a cylindrical or columnar shape, and the second filter body is in a cylindrical or columnar shape.

6. The filter cartridge of claim 1 wherein, The water-permeable member is a metal cage or a plastic cage.

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

8. The filter cartridge of any one of claims 1-7, wherein, The first filter body has a mineralization filter material capable of precipitating minerals, and the second filter body has a promoting filter material for promoting the mineralization filter material to precipitate minerals. Alternatively, the first filter body has a mineralization filter material capable of precipitating minerals, and the second filter body has an anti-antagonistic filter material capable of inhibiting the mineralization filter material from precipitating minerals. Alternatively, the first filter body has a mineralization filter material for adjusting the pH value of water, and the second filter body has a neutralization filter material for neutralizing the pH value of water. Alternatively, the first filter body has a first mineralization filter material capable of precipitating a first mineral, and the second filter body has a second mineralization filter material capable of precipitating a second mineral.

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

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

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