Filter element assembly and mineral spring water purifier

Abstract

The utility model relates to the technical field of water treatment equipment, in particular to a filter element assembly and a mineral spring water purifier. The filter element assembly comprises a metasilicic acid filter material and an alkaline filter material, an inner water path is arranged in the filter element assembly, the metasilicic acid filter material and the alkaline filter material are arranged in a sleeved mode, and fluid in the inner water path sequentially flows through the alkaline filter material and the metasilicic acid filter material. Compared with the prior art, the structure provided by the utility model has the advantages that the metasilicic acid filter material and the alkaline filter material are arranged in a sleeving manner, and the inner water path which firstly flows through the alkaline filter material and then flows through the metasilicic acid filter material is formed, so that the dissolution of metasilicic acid in the metasilicic acid filter material can be promoted by utilizing alkaline substances dissolved into water from the alkaline filter material; therefore, the probability of low metasilicic acid content in the metasilicic acid mineralized water can be reduced.

Description

Technical Field

[0001] This application relates to the field of water treatment equipment technology, specifically to filter cartridges and mineral water purifiers. Background Technology

[0002] With the improvement of productivity, people's demand for quality of life and convenience is also increasing. Mineralized water is a type of water containing mineral salts, rich in essential macro- and micro-elements, and therefore, it is favored as drinking water. At the same time, there is also a certain demand for mineralized water containing specific mineral salts, such as metasilicic acid mineralized water, during production and experimental processes.

[0003] Currently, there are two common methods for preparing mineralized water. The first method involves artificially mixing soluble substances containing metasilicic acid with water to create mineralized water of appropriate concentration. However, this method is cumbersome, requires a certain level of chemical knowledge, and is inefficient. The second method involves adding minerals that can dissolve metasilicic acid into containers filled with water—such as water dispensers or water purifiers. The metasilicic acid in the minerals dissolves into the water in the container, transforming the water into metasilicic acid mineralized water. However, it is difficult to effectively control the metasilicic acid content in the mineralized water prepared using this method. When the metasilicic acid content is insufficient, the mineralized water cannot meet the user's needs. Utility Model Content

[0004] Therefore, this application provides a method that can reduce the probability of low metasilicic acid content in metasilicic acid mineralized water.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a filter element assembly, including a metasilicic acid filter material and an alkaline filter material, wherein the filter element assembly is provided with an internal water channel, the metasilicic acid filter material and the alkaline filter material are sleeved together, and the fluid in the internal water channel flows sequentially through the alkaline filter material and the metasilicic acid filter material.

[0006] In one specific embodiment, the inner water passage has a first water passage and a second water passage. The inner water passage has an outer cavity and an inner cavity. The second water passage, the outer cavity, the inner cavity, and the first water passage are sequentially connected. The outer cavity is disposed on the outer periphery of the inner cavity. One of the metasilicic acid filter material and the alkaline filter material is disposed in the outer cavity, and the other of the metasilicic acid filter material and the alkaline filter material is disposed in the inner cavity. The filter element assembly includes an outer sleeve and an inner sleeve. The outer sleeve is sleeved on the outer periphery of the inner sleeve. The outer cavity is disposed between the inner sleeve and the outer sleeve. The inner cavity is disposed on the side of the inner sleeve opposite to the outer cavity. The inner sleeve has a first opening and a second opening. The first opening connects the outer cavity and the inner cavity, and the second opening connects the inner cavity and the second water passage.

[0007] In one specific embodiment, the first water passage has a third opening, the second water passage has a fourth opening, the third opening and the fourth opening are located at the lower end of the outer sleeve, the first opening is located at the upper end of the inner sleeve, the second opening is located at the lower end of the inner sleeve, and the second opening is connected to the fourth opening.

[0008] In one specific embodiment, the outer sleeve and the inner sleeve are arranged along the same axial direction, and the metasilicic acid filter material and the alkaline filter material are both cylindrical blocks. The outer sleeve, the metasilicic acid filter material, the inner sleeve, and the alkaline filter material are sequentially arranged from the outside to the inside, and the fluid in the second water channel flows sequentially through the alkaline filter material and the metasilicic acid filter material into the first water channel; or, the outer sleeve, the alkaline filter material, the inner sleeve, and the metasilicic acid filter material are sequentially arranged from the outside to the inside, and the fluid in the first water channel flows sequentially through the alkaline filter material and the metasilicic acid filter material into the second water channel.

[0009] In one specific embodiment, the inner sleeve includes a limiting protrusion disposed adjacent to the first opening and protruding into the outer cavity perpendicular to the axial direction. The limiting protrusion abuts against and limits the metasilicic acid filter material or the alkaline filter material in the outer cavity.

[0010] In one specific embodiment, the internal water passage has a first water passage, a second water passage, and a central channel. The first water passage has a third opening, the second water passage has a fourth opening, one end of the central channel is blocked, and the other end of the central channel is connected to the fourth opening. The filter element assembly includes an outer sleeve, and the third and fourth openings are disposed in the outer sleeve. The central channel is disposed inside the alkaline filter material, or the central channel is disposed inside the metasilicic acid filter material.

[0011] In one specific embodiment, the filter element assembly further includes an upper end cap and a lower end cap. The metasilicic acid filter material has a first upper end face and a first lower end face disposed opposite to each other, and a first outer peripheral surface and a first inner peripheral surface connecting the first upper end face and the first lower end face. The alkaline filter material has a second upper end face and a second lower end face disposed opposite to each other, and a second outer peripheral surface and a second inner peripheral surface connecting the second upper end face and the second lower end face. The upper end cap covers the first upper end face and the second upper end face and blocks one end of the central channel. The lower end cap has a second inlet. The lower end cap covers the first lower end face and the second lower end face, and the second inlet communicates with the central channel and the fourth opening. When the metasilicic acid filter material is sleeved on the outer periphery of the alkaline filter material, the first inner peripheral surface is adjacent to the second outer peripheral surface, and the second inner peripheral surface surrounds and forms the central channel. Alternatively, when the alkaline filter material is sleeved on the outer periphery of the metasilicic acid filter material, the second inner peripheral surface is adjacent to the first outer peripheral surface, and the first inner peripheral surface surrounds and forms the central channel.

[0012] In one specific embodiment, the third opening and the fourth opening are disposed at the lower end of the outer sleeve, and the outer sleeve, the metasilicic acid filter material, the alkaline filter material, and the central channel are arranged along the same axial direction.

[0013] In one specific embodiment, when the metasilicic acid filter material is sleeved on the outer periphery of the alkaline filter material, the first inner peripheral surface and the second outer peripheral surface are sintered and fixed; or, when the alkaline filter material is sleeved on the outer periphery of the metasilicic acid filter material, the first inner peripheral surface and the second outer peripheral surface are sintered and fixed.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a mineral water purifier, including a main body of the device and a filter element assembly as described in any of the above specific embodiments, wherein the main body of the device is connected to the filter element assembly.

[0015] The beneficial effects of this application include: utilizing the interlocking metasilicic acid filter media and alkaline filter media to form a water channel from the inside out or from the inside out, so that the alkaline filter media and metasilicic acid filter media are arranged in series in the internal water channel of the filter element assembly. Under the continuous outflow of water from the filter element assembly, the alkaline substances in the alkaline filter media can dissolve normally into the flowing water. Since the metasilicic acid filter media is located downstream of the alkaline filter media, the alkaline substances flow with the water to the metasilicic acid filter media, promoting the dissolution of metasilicic acid from the metasilicic acid filter media into the flowing water, thereby increasing the metasilicic acid content in the metasilicic acid mineralized water output by the filter element assembly under the outflow condition.

[0016] When the filter element assembly stops immersing in the outflowing water, the immersion water in the internal water path no longer flows through the alkaline filter media before flowing through the metasilicic acid filter media. Although the immersion water no longer has a macroscopic flow trend, the alkaline filter media and the metasilicic acid filter media are actually connected through the immersion water, allowing alkaline substances to diffuse in the immersion water and move towards the metasilicic acid filter media. This promotes the dissolution of metasilicic acid into the immersion water, thereby increasing the metasilicic acid content in the metasilicic acid mineralized water output by the filter element assembly during the immersion state. Through the filter element assembly structure provided in this application, the metasilicic acid content in the metasilicic acid mineralized water can be effectively increased in both the flow and immersion states, reducing the probability of insufficient metasilicic acid content in the metasilicic acid mineralized water, thereby improving the stability and usability of the filter element assembly. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementations of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the assembly structure of the filter element assembly provided in this application;

[0019] Figure 2 A cross-sectional view of the filter element assembly provided in the first embodiment of this application, with the metasilicic acid filter material and the metasilicic acid filter material removed;

[0020] Figure 3 for Figure 2 A cross-sectional view of the middle filter element assembly;

[0021] Figure 4 yes Figure 3 The exploded cross-sectional view of the filter element assembly shown.

[0022] Figure 5 A cross-sectional view of the filter element assembly provided in the second embodiment of this application, with the metasilicic acid filter material and the metasilicic acid filter material removed;

[0023] Figure 6 for Figure 5 A cross-sectional view of the middle filter element assembly;

[0024] Figure 7 yes Figure 6 The exploded cross-sectional view of the filter element assembly shown.

[0025] Figure 8 This is a cross-sectional view of the third embodiment of the filter element assembly provided in this application;

[0026] Figure 9This is a cross-sectional structural diagram of the fourth embodiment of the filter element assembly provided in this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Filter element assembly; 2. Inner water channel; 21. First water channel; 211. Third opening; 22. Outer cavity; 23. Inner cavity; 24. Second water channel; 241. Fourth opening; 3. Outer sleeve; 4. Inner sleeve; 41. First opening; 42. Second opening; 43. Limiting protrusion; 5. Upper end cover; 6. Lower end cover; 61. Second inlet; 7. Metasilicic acid filter material; 71. First upper end face; 72. First lower end face; 73. First outer peripheral surface; 74. First inner peripheral surface; 8. Alkaline filter material; 81. Second upper end face; 82. Second lower end face; 83. Second outer peripheral surface; 84. Second inner peripheral surface; 85. Central channel; 9. Encapsulation cover. Detailed Implementation

[0029] In this application, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain circumstances to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0034] With the improvement of productivity, people's demand for quality of life and convenience is also increasing. Mineralized water is a type of water containing mineral salts, rich in essential macro- and micro-elements, and therefore, it is favored as drinking water. At the same time, there is also a certain demand for mineralized water containing specific mineral salts, such as metasilicic acid mineralized water, during production and experimental processes.

[0035] Currently, there are two common methods for preparing mineralized water. The first method involves artificially mixing soluble substances containing metasilicic acid with water to create mineralized water of appropriate concentration. However, this method is cumbersome, requires a certain level of chemical knowledge, and is inefficient. The second method involves adding minerals that can dissolve metasilicic acid into containers filled with water—such as water dispensers or water purifiers. The metasilicic acid in the minerals dissolves into the water in the container, transforming the water into metasilicic acid mineralized water. However, it is difficult to effectively control the metasilicic acid content in the mineralized water prepared using this method. When the metasilicic acid content is insufficient, the mineralized water cannot meet the user's needs.

[0036] In order to improve or solve the above technical problems, the inventors of this application, after long-term research, have proposed at least the following embodiments.

[0037] See Figures 1-9 , Figure 1 This is a schematic diagram of the assembly structure of the filter element assembly provided in this application. Figure 2 This is a cross-sectional view of the first embodiment of the filter element assembly provided in this application, showing the removal of the metasilicic acid filter material and the cross-sectional structure of the metasilicic acid filter material. Figure 3 for Figure 2 A cross-sectional view of the middle filter element assembly. Figure 4 yes Figure 3 The diagram shows an exploded cross-sectional view of the filter element assembly. Figure 5 This is a cross-sectional view of the filter element assembly provided in the second embodiment of this application, with the metasilicic acid filter material removed and the metasilicic acid filter material removed. Figure 6 for Figure 5 A cross-sectional view of the middle filter element assembly. Figure 7 yes Figure 6 The diagram shows an exploded cross-sectional view of the filter element assembly. Figure 8 This is a cross-sectional structural diagram of the third embodiment of the filter element assembly provided in this application. Figure 9 This is a cross-sectional structural diagram of the fourth embodiment of the filter element assembly provided in this application.

[0038] This application provides a filter element assembly 1, including a metasilicic acid filter material 7 and an alkaline filter material 8. The filter element assembly 1 has an internal water passage 2. The metasilicic acid filter material 7 and the alkaline filter material 8 are sleeved together, and fluid in the internal water passage 2 flows sequentially through the alkaline filter material 8 and the metasilicic acid filter material 7. The metasilicic acid filter material 7 can dissolve metasilicic acid into the water, and the alkaline filter material 8 contains an alkaline substance that promotes the dissolution of metasilicic acid from the metasilicic acid filter material 7.

[0039] In the structure provided in this specific embodiment, the metasilicic acid filter material 7 and the alkaline filter material 8 are used in conjunction to form a water channel from the inside out or from the inside out, so that the alkaline filter material 8 and the metasilicic acid filter material 7 are arranged in series in the inner water channel 2 of the filter element assembly 1. Under the continuous outflow of water from the filter element assembly 1, the alkaline substances in the alkaline filter material 8 can dissolve normally into the outflowing water. Since the metasilicic acid filter material 7 is located downstream of the alkaline filter material 8, the alkaline substances flow to the metasilicic acid filter material 7 with the water, which can promote the dissolution of metasilicic acid in the metasilicic acid filter material 7 into the outflowing water, thereby increasing the metasilicic acid content in the metasilicic acid mineralized water output by the filter element assembly 1 under the outflowing state.

[0040] When the filter element assembly 1 stops immersing water, the immersion water in the inner water channel 2 no longer flows through the alkaline filter material 8 and then through the metasilicic acid filter material 7. Although the immersion water no longer has a macroscopic flow trend, the alkaline filter material 8 and the metasilicic acid filter material 7 are actually connected through the immersion water, so that alkaline substances can also diffuse in the immersion water to move towards the metasilicic acid filter material 7, which can promote the dissolution of metasilicic acid into the immersion water, thereby increasing the metasilicic acid content in the metasilicic acid mineralized water output by the filter element assembly 1 in the immersion state.

[0041] The filter element assembly 1 structure provided in this application can effectively increase the content of metasilicic acid in metasilicic acid mineralized water, reduce the probability of insufficient metasilicic acid content in metasilicic acid mineralized water, and thus improve the stability and usability of filter element assembly 1, regardless of whether it is in a flow state or a soaking state.

[0042] Metasilicic acid (H2SiO3) can be produced by the hydrolysis of silicate ores in water. Taking sodium silicate (Na2SiO3) as an example, the reaction formula for the hydrolysis of sodium silicate to produce metasilicic acid is as follows:

[0043] Reaction 1:

[0044] Reaction 2:

[0045] Among them, metasilicic acid and orthosilicic acid (H4SiO4) exist in a dynamic equilibrium. Orthosilicic acid has strong acidity and can exist stably in an acidic environment. Therefore, an appropriate alkaline environment can cause the equilibrium of reaction two to shift to the left, that is, reaction two proceeds in reverse, resulting in a decrease in the content of orthosilicic acid and an increase in the content of metasilicic acid.

[0046] However, excessive alkalinity can inhibit the forward reaction of reaction one, suppress the hydrolysis of silicate ions, and thus inhibit the formation of metasilicic acid. Several embodiments were obtained by adjusting the mass ratio of alkaline filter material 8 to metasilicic acid filter material 7. For each embodiment, the pH value of the flowing water, the metasilicic acid concentration in the flowing water, and the metasilicic acid concentration in the soaking water after soaking for 1 hour were tested, and the results are shown in Table 1 below.

[0047] Table 1

[0048]

[0049] Referring to the data in Table 1, in the embodiment where the mass percentage of alkaline filter media 8 is 0%, the outflow water is weakly acidic, and the metasilicic acid concentration in the outflow water is very low, only 0.2 mg / L. When the mass percentage of alkaline filter media 8 increases to 10%, the metasilicic acid concentration in the outflow water increases, reaching 1.2 mg / L. When the mass percentage of alkaline filter media 8 is between 20% and 40%, the metasilicic acid concentration in the outflow water reaches above 2 mg / L. When the mass percentage of alkaline filter media 8 is 30%, the metasilicic acid concentration in the soaking water can reach up to 10 mg / L. Furthermore, when the mass percentage of alkaline filter media 8 is 50%, the pH value of the outflow water is too high, while the metasilicic acid concentrations in both the outflow water and the soaking water decrease. It can be observed that at this point, the effect of alkaline substances in promoting metasilicic acid formation begins to decrease.

[0050] Optionally, the alkaline filter material 8 may include at least one of brucite, periclase, calcite, and dolomite. The metasilicic acid filter material 7 may include at least one of diopside, serpentine, and maifanite.

[0051] In a specific embodiment of this application, the inner water passage 2 has a first water passage 21 and a second water passage 24, and the inner water passage 2 has an outer cavity 22 and an inner cavity 23. The second water passage 24, the outer cavity 22, the inner cavity 23, and the first water passage 21 are connected sequentially. The outer cavity 22 is disposed on the outer periphery of the inner cavity 23, and one of the metasilicic acid filter material 7 and the alkaline filter material 8 is disposed in the outer cavity 22, while the other of the metasilicic acid filter material 7 and the alkaline filter material 8 is disposed in the inner cavity 23. The filter element assembly 1 includes an outer sleeve 3 and an inner sleeve 4. The outer sleeve 3 is sleeved on the outer periphery of the inner sleeve 4, the outer cavity 22 is disposed between the inner sleeve 4 and the outer sleeve 3, and the inner cavity 23 is disposed on the side of the inner sleeve 4 opposite to the outer cavity 22. The inner sleeve 4 has a first opening 41 and a second opening 42. The first opening 41 connects the outer cavity 22 and the inner cavity 23, and the second opening 42 connects the inner cavity 23 and the second water passage 24.

[0052] In the structure provided in this specific embodiment, the outer sleeve 3 and the inner sleeve 4 are fitted together to form an outer cavity 22 and an inner cavity 23 connected between the first water passage 21 and the second water passage 24, and the outer cavity 22 and the inner cavity 23 can be connected through a first outlet. When the metasilicic acid filter material 7 is disposed in the inner cavity 23 and the alkaline filter material 8 is disposed in the outer cavity 22, water can enter the filter element assembly 1 through the second water passage 24. The water first flows through the alkaline filter material 8 in the outer cavity 22, then flows through the metasilicic acid filter material 7 in the inner cavity 23, and finally exits from the filter element assembly 1 through the second water passage 24. When the metasilicic acid filter material 7 is disposed in the outer cavity 22 and the alkaline filter material 8 is disposed in the inner cavity 23, water can enter the filter element assembly 1 through the first water passage 21. The water first flows through the alkaline filter material 8 in the inner cavity 23, then flows through the metasilicic acid filter material 7 in the outer cavity 22, and finally exits from the filter element assembly 1 through the first water passage 21. It can form water channels in different directions in two different filter media settings.

[0053] In the flow state, the water entering the filter element assembly 1 first passes through the alkaline filter media 8 located in either the inner cavity 23 or the outer cavity 22. Then, carrying the alkaline substances dissolved from the alkaline filter media 8, it enters the other of the inner cavity 23 or outer cavity 22 through the first opening 41. After passing through the metasilicic acid filter media 7 located in either the inner cavity 23 or the outer cavity 22, the alkaline substances promote the dissolution of metasilicic acid in the metasilicic acid filter media 7. Only then can the water carrying the metasilicic acid enter the outlet path and be output to the outside of the filter element assembly 1. This structure separates the inner cavity 23 and the outer cavity 22, clearly defining the inner water path 2. The alkaline substances effectively promote the dissolution of metasilicic acid, ensuring the metasilicic acid content in the metasilicic acid mineralized water output from the filter element assembly 1.

[0054] In one specific embodiment of this application, the first water passage 21 has a third opening 211, and the second water passage 24 has a fourth opening 241. The third opening 211 and the fourth opening 241 are located at the lower end of the outer sleeve 3, the first opening 41 is located at the upper end of the inner sleeve 4, and the second opening 42 is located at the lower end of the inner sleeve 4, and the second opening 42 is connected to the fourth opening 241.

[0055] In the structure provided in this specific embodiment, the outer sleeve 3 and the inner sleeve 4 are used to limit the flow of water in the flow state from the alkaline filter material 8 to the metasilicic acid filter material 7.

[0056] When the alkaline filter material 8 is placed in the inner cavity 23 and the metasilicic acid filter material 7 is placed in the outer cavity 22, since the first opening 41 is located at the upper end of the inner sleeve 4 and water is introduced into the filter element assembly 1 through the second opening 42, the water level in the inner cavity 23 of the filter element assembly 1 must rise to submerge the upper end of the inner sleeve 4 before it can enter the outer cavity 22 through the first outlet. This maintains the water level in the filter element assembly 1, allowing the metasilicic acid filter material 7 and the alkaline filter material 8 to fully contact the water, reducing the probability of low metasilicic acid content in the metasilicic acid mineralized water, thereby improving the stability and usability of the filter element assembly 1. Furthermore, water needs to exit the filter element assembly 1 through the third opening 211. The water entering the outer cavity 22 through the first opening 41 is filtered by the metasilicic acid filter material 7 and the alkaline filter material 8 under the pressure of the flowing water. At the same time, it is also affected by gravity. Gravity can further improve the efficiency of the metasilicic acid filter material 7 in filtering water. Thus, while the metasilicic acid filter material 7 and the alkaline filter material 8 are in more complete contact with the water, the working efficiency of the filter element assembly 1 is improved by utilizing natural gravity.

[0057] When the alkaline filter material 8 is placed in the inner cavity 23 and the metasilicic acid filter material 7 is placed in the outer cavity 22, since the first opening 41 is located at the upper end of the inner sleeve 4 and water is introduced into the filter element assembly 1 through the third opening 211, the water level in the outer cavity 22 of the filter element assembly 1 must rise to submerge the upper end of the inner sleeve 4 before it can enter the inner cavity 23 through the first outlet. This maintains the water level in the filter element assembly 1, allowing the metasilicic acid filter material 7 and the alkaline filter material 8 to fully contact the water, reducing the probability of low metasilicic acid content in the metasilicic acid mineralized water, thereby improving the stability and usability of the filter element assembly 1. Furthermore, water needs to exit the filter element assembly 1 through the fourth opening 241. The water entering the inner cavity 23 through the first opening 41 is filtered by the metasilicic acid filter material 7 and the alkaline filter material 8 under the pressure of the flowing water. At the same time, it is also affected by gravity. Gravity can further improve the efficiency of the metasilicic acid filter material 7 in filtering water. Thus, while the metasilicic acid filter material 7 and the alkaline filter material 8 are in more complete contact with the water, the working efficiency of the filter element assembly 1 is improved by utilizing natural gravity.

[0058] In one specific embodiment of this application, the outer sleeve 3 and the inner sleeve 4 are arranged along the same axial direction, and the metasilicic acid filter material 7 and the alkaline filter material 8 are both cylindrical blocks.

[0059] Optionally, the outer sleeve 3, the metasilicic acid filter material 7, the inner sleeve 4, and the alkaline filter material 8 can be sequentially arranged from the outside to the inside. In the flow state, the water flows from the inner cavity 23 to the outer cavity 22, and the fluid in the second water channel 24 flows sequentially through the alkaline filter material 8 and the metasilicic acid filter material 7 before entering the first water channel 21.

[0060] Optionally, the outer sleeve 3, alkaline filter media 8, inner sleeve 4, and metasilicic acid filter media 7 can be sequentially arranged from the outside to the inside. In the flow state, water flows from the inner cavity 23 to the outer cavity 22, and the fluid in the first water channel 21 flows sequentially through the alkaline filter media 8 and the metasilicic acid filter media 7 into the second water channel 24.

[0061] In the structure provided in this specific embodiment, the outer sleeve 3, alkaline filter media 8, inner sleeve 4, and metasilicic acid filter media 7 can be sequentially arranged in two different orders. In the flow state, the water entering the filter element assembly 1 first passes through the alkaline filter media 8 for filtration, and then carries alkaline substances through the first outlet to contact the metasilicic acid filter media 7. After being filtered by the metasilicic acid filter media 7, the water containing metasilicic acid can be output to the filter element assembly 1, thus dividing a clear inner water path 2. The alkaline substances effectively promote the dissolution of metasilicic acid, ensuring the metasilicic acid content in the metasilicic acid mineralized water output by the filter element assembly 1.

[0062] In one specific embodiment of this application, the inner sleeve 4 includes a limiting protrusion 43, which is disposed adjacent to the first opening 41 and protrudes into the outer cavity 22 in a vertical direction. The limiting protrusion 43 abuts against and limits the metasilicic acid filter material 7 or alkaline filter material 8 in the outer cavity 22.

[0063] In the structure provided in this specific embodiment, by setting the limiting protrusion 43, the inner sleeve 4 can be connected and limited to the alkaline filter material 8 or metasilicic acid provided on the outer periphery, thereby fixing the metasilicic acid filter material 7 and the alkaline filter material 8 relatively, reducing the probability of relative shaking between the two affecting the operation of the filter element assembly 1, and thus improving the structural stability of the filter element assembly 1.

[0064] In one specific embodiment of this application, the inner water passage 2 has a first water passage 21, a second water passage 24, and a central channel 85. The first water passage 21 has a third opening 211, and the second water passage 24 has a fourth opening 241. One end of the central channel 85 is sealed, and the other end of the central channel 85 is connected to the fourth opening 241. The filter element assembly 1 includes an outer sleeve 3, and the third opening 211 and the fourth opening 241 are disposed in the outer sleeve 3. The central channel 85 is disposed within the alkaline filter material 8, or the central channel 85 is disposed within the metasilicic acid filter material 7.

[0065] In the structure provided in this specific embodiment, a central channel 85 is provided on the alkaline filter material 8 or the metasilicic acid filter material 7 disposed in the inner cavity 23. The central channel 85 can be used to guide the water entering or leaving the filter element assembly 1, so that the water entering can be filtered by the alkaline filter material 8 and the metasilicic acid filter material 7. The alkaline substances effectively promote the dissolution of metasilicic acid, so that the metasilicic acid content in the metasilicic acid mineralized water output by the filter element assembly 1 is guaranteed.

[0066] In one specific embodiment of this application, the filter element assembly 1 further includes an upper end cap 5 and a lower end cap 6. The metasilicic acid filter material 7 has a first upper end surface 71 and a first lower end surface 72 disposed opposite to each other, and a first outer peripheral surface 73 and a first inner peripheral surface 74 connecting the first upper end surface 71 and the first lower end surface 72. The alkaline filter material 8 has a second upper end surface 81 and a second lower end surface 82 disposed opposite to each other, and a second outer peripheral surface 83 and a second inner peripheral surface 84 connecting the second upper end surface 81 and the second lower end surface 82.

[0067] The upper cover 5 is placed on the first upper surface 71 and the second upper surface 81, and blocks one end of the central channel 85. The lower cover 6 is provided with a second inlet 61, and is placed on the first lower surface 72 and the second lower surface 82, and the second inlet 61 connects the central channel 85 and the fourth opening 241.

[0068] When the metasilicic acid filter material 7 is fitted around the outer periphery of the alkaline filter material 8, the first inner peripheral surface 74 is adjacent to the second outer peripheral surface 83, and the second inner peripheral surface 84 forms a central channel 85. When the alkaline filter material 8 is fitted around the outer periphery of the metasilicic acid filter material 7, the second inner peripheral surface 84 is adjacent to the first outer peripheral surface 73, and the first inner peripheral surface 74 forms a central channel 85.

[0069] In the structure provided in this specific embodiment, the central channel 85 can guide the water entering or exiting the filter element assembly 1, guiding it to contact the alkaline filter material 8 and the metasilicic acid filter material 7 for filtration, or output it to the outside of the filter element assembly 1. The upper end cover 5 and the lower end cover 6 can ensure that the water entering the central channel 85 can be filtered by the alkaline filter material 8 and the metasilicic acid filter material 7 before being output, which can reduce the probability of low metasilicic acid content in the metasilicic acid mineralized water, thereby improving the stability and usability of the filter element assembly 1.

[0070] In one specific embodiment of this application, the third opening 211 and the fourth opening 241 are disposed at the lower end of the outer sleeve 3, and the outer sleeve 3, the metasilicic acid filter material 7, the alkaline filter material 8 and the central channel 85 are disposed along the same axial direction.

[0071] In the structure provided in this specific embodiment, water in the filter element assembly 1 can be input from the lower end of the outer sleeve 3, and after being filtered sequentially by the alkaline filter media 8 and the metasilicic acid filter media 7, it is output from the lower end of the outer sleeve 3 to the outside of the filter element assembly 1. Under the impetus of the water pressure in the flow state, the water can more fully interact with the alkaline filter media 8, which can reduce the probability of low metasilicic acid content in the metasilicic acid mineralized water, thereby improving the stability and usability of the filter element assembly 1.

[0072] In one specific embodiment of this application, when the metasilicic acid filter material 7 is sleeved on the outer periphery of the alkaline filter material 8, the first inner peripheral surface 74 and the second outer peripheral surface 83 are sintered and fixed. Alternatively, when the alkaline filter material 8 is sleeved on the outer periphery of the metasilicic acid filter material 7, the first inner peripheral surface 74 and the second outer peripheral surface 83 are sintered and fixed.

[0073] In the structure provided in this specific embodiment, the alkaline filter material 8 and the metasilicic acid filter material 7 can be sintered separately and then fitted together, or they can be sintered simultaneously to form an integral structure. When the alkaline filter material 8 and the metasilicic acid filter material 7 are integrally sintered, the first inner circumferential surface 74 and the second outer circumferential surface 83, or the second inner circumferential surface 84 and the first inner circumferential surface 74, can be tightly connected during the sintering process, thereby achieving relative fixation of the alkaline filter material 8 and the metasilicic acid filter material 7.

[0074] Figures 2-4 A first embodiment of the structure of the metasilicic acid filter media 7 and the alkaline filter media 8 is shown. In this embodiment, the metasilicic acid filter media 7 is sleeved on the outer periphery of the inner sleeve 4, and the alkaline filter media 8 is disposed in the inner cavity 23. Optionally, in a cross-section along the vertical axis, the outline shape of the metasilicic acid filter media 7 can be the same as the outline shape of the outer cavity 22, and the outline shape of the alkaline filter media 8 can be the same as the outline shape of the inner cavity 23, ensuring that the water can be filtered by both the alkaline filter media 8 and the metasilicic acid filter media 7.

[0075] Figures 4-7 A second embodiment of the structure of the metasilicic acid filter material 7 and the alkaline filter material 8 is shown. In this embodiment, the metasilicic acid filter material 7 is directly sleeved on the outer periphery of the alkaline filter material 8, and the central channel 85 is disposed in the alkaline filter material 8. Figure 8 A third embodiment of the structure of the metasilicic acid filter material 7 and the alkaline filter material 8 is shown. In this embodiment, the alkaline filter material 8 is directly sleeved on the outer periphery of the metasilicic acid filter material 7, and the central channel 85 is disposed in the metasilicic acid filter material 7.

[0076] Figure 9 A fourth embodiment of the structure of the metasilicic acid filter media 7 and the alkaline filter media 8 is shown. In this embodiment, the metasilicic acid filter media 7 is disposed in the inner cavity 23, and the alkaline filter media 8 is sleeved on the outer periphery of the inner sleeve 4. Optionally, in a cross-section along the vertical axis, the outline shape of the alkaline filter media 8 is the same as the outline shape of the outer cavity 22. The outline shape of the metasilicic acid filter media 7 can be the same as the outline shape of the inner cavity 23 to ensure that the water can be filtered by both the alkaline filter media 8 and the metasilicic acid filter media 7.

[0077] The first and fourth embodiments use similar inner sleeve 4 and outer sleeve 3 structures, but differ in the direction of the inner water channel 2 and the placement of the filter media. The second and third embodiments use similar central channel 85, upper end cover 5, and lower end cover 6 structures, but differ in the direction of the inner water channel 2 and the placement of the filter media.

[0078] Optionally, the filter element assembly 1 may also include a sealing cap 9, which is placed over one end of the outer sleeve 3 to isolate the inner water passage 2 in the outer sleeve 3 from the outside. During the production and assembly of the filter element assembly 1, the alkaline filter material 8, the inner sleeve 4, the metasilicic acid filter material 7, and other structures can be installed into the outer sleeve 3 first, and then sealed with the sealing cap 9 to separate the inner water passage 2 from the outside.

[0079] This application also provides a mineral water purifier, including a main body and a filter element assembly 1 as described in any of the above embodiments. The main body is connected to the filter element assembly 1.

[0080] In the structure provided in this specific embodiment, the metasilicic acid filter material 7 and the alkaline filter material 8 are used in conjunction to form a water channel from the inside out or from the inside out, so that the alkaline filter material 8 and the metasilicic acid filter material 7 are arranged in series in the inner water channel 2 of the filter element assembly 1. Under the continuous outflow of water from the filter element assembly 1, the alkaline substances in the alkaline filter material 8 can dissolve normally into the outflowing water. Since the metasilicic acid filter material 7 is located downstream of the alkaline filter material 8, the alkaline substances flow to the metasilicic acid filter material 7 with the water, which can promote the dissolution of metasilicic acid in the metasilicic acid filter material 7 into the outflowing water, thereby increasing the metasilicic acid content in the metasilicic acid mineralized water output by the filter element assembly 1 under the outflowing state.

[0081] When the filter element assembly 1 stops immersing water, the immersion water in the inner water channel 2 no longer flows through the alkaline filter material 8 and then through the metasilicic acid filter material 7. Although the immersion water no longer has a macroscopic flow trend, the alkaline filter material 8 and the metasilicic acid filter material 7 are actually connected through the immersion water, so that alkaline substances can also diffuse in the immersion water to move towards the metasilicic acid filter material 7, which can promote the dissolution of metasilicic acid into the immersion water, thereby increasing the metasilicic acid content in the metasilicic acid mineralized water output by the filter element assembly 1 in the immersion state.

[0082] The filter element assembly 1 structure provided in this application can effectively increase the content of metasilicic acid in metasilicic acid mineralized water, whether in the flow state or the soaking state, and reduce the probability of insufficient metasilicic acid content in metasilicic acid mineralized water, thereby improving the stability and usability of the mineral water purifier.

[0083] Optionally, the main body of the device may include a water quality sensor, which is connected to the internal water circuit 2 and / or the main body of the device. The water quality sensor is located downstream of the alkaline filter material 8 and the metasilicic acid filter material 7, and is capable of detecting the water quality of the mineral water purifier.

[0084] The water quality sensor may include at least one of a pH sensor and a TDS sensor. In the structure provided in this embodiment, the pH sensor is used to measure the pH value of metasilicic acid mineralized water and can convert it into a corresponding usable output signal, thereby characterizing the pH value of the metasilicic acid mineralized water. The TDS sensor is a device used to measure total dissolved solids (TDS) in water and can continuously monitor the conductivity value of the analyte. The pH value and metasilicic acid content of the metasilicic acid mineralized water can be calculated based on the conductivity value, thereby characterizing the pH value and metasilicic acid content of the metasilicic acid mineralized water.

[0085] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form yet another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A filter element assembly characterized in that, comprising a metasilicic acid filter material (7) and an alkaline filter material (8), an inner water channel (2) is arranged in the filter element assembly (1), the metasilicic acid filter material (7) and the alkaline filter material (8) are sleeved, and fluid in the inner water channel (2) sequentially flows through the alkaline filter material (8) and the metasilicic acid filter material (7).

2. The filter element assembly according to claim 1, characterized in that, the inner water channel (2) has a first water channel (21) and a second water channel (24), the inner water channel (2) has an outer cavity (22) and an inner cavity (23), the second water channel (24), the outer cavity (22), the inner cavity (23) and the first water channel (21) are sequentially connected, the outer cavity (22) is arranged outside the inner cavity (23), one of the metasilicic acid filter material (7) and the alkaline filter material (8) is arranged in the outer cavity (22), and the other of the metasilicic acid filter material (7) and the alkaline filter material (8) is arranged in the inner cavity (23); the filter element assembly (1) comprises an outer sleeve (3) and an inner sleeve (4), the outer sleeve (3) is sleeved outside the inner sleeve (4), the outer cavity (22) is arranged between the inner sleeve (4) and the outer sleeve (3), the inner cavity (23) is arranged on the side of the inner sleeve (4) away from the outer cavity (22), the inner sleeve (4) has a first opening (41) and a second opening (42), the first opening (41) connects the outer cavity (22) and the inner cavity (23), and the second opening (42) connects the inner cavity (23) and the second water channel (24).

3. The filter element assembly according to claim 2, characterized in that, the first water channel (21) has a third opening (211), the second water channel (24) has a fourth opening (241), the third opening (211) and the fourth opening (241) are arranged at the lower end of the outer sleeve (3), the first opening (41) is arranged at the upper end of the inner sleeve (4), the second opening (42) is arranged at the lower end of the inner sleeve (4), and the second opening (42) is in abutment with the fourth opening (241).

4. The filter cartridge assembly of claim 3, wherein, the outer sleeve (3) and the inner sleeve (4) are arranged along the same axis, the metasilicic acid filter material (7) and the alkaline filter material (8) are both cylindrical blocks, the outer sleeve (3), the metasilicic acid filter material (7), the inner sleeve (4), the alkaline filter material (8) are sequentially sleeved from outside to inside, fluid in the second water channel (24) sequentially flows through the alkaline filter material (8), the metasilicic acid filter material (7) and enters the first water channel (21); or, the outer sleeve (3), the alkaline filter material (8), the inner sleeve (4), the metasilicic acid filter material (7) are sequentially sleeved from outside to inside, fluid in the first water channel (21) sequentially flows through the alkaline filter material (8), the metasilicic acid filter material (7) and enters the second water channel (24).

5. The filter element assembly according to claim 4, characterized in that, The inner sleeve (4) comprises a limiting protrusion (43) arranged adjacent to the first opening (41) and protruding into the outer cavity (22) in a direction perpendicular to the axial direction, the limiting protrusion (43) abutting and limiting the metasilicic acid filter element (7) or the alkaline filter element (8) in the outer cavity (22).

6. The filter element assembly according to claim 1, wherein, The inner water channel (2) has a first water channel (21) with a third opening (211), a second water channel (24) with a fourth opening (241), and a central passage (85) with one end being blocked and the other end being connected to the fourth opening (241), and the filter element assembly (1) comprises an outer sleeve (3), and the third opening (211) and the fourth opening (241) are arranged in the outer sleeve (3). The central passage (85) is arranged in the alkaline filter element (8), or the central passage (85) is arranged in the metasilicic acid filter element (7).

7. The filter element assembly according to claim 6, wherein, The filter element assembly (1) further comprises an upper end cover (5) and a lower end cover (6), the metasilicic acid filter element (7) has a first upper end face (71) and a first lower end face (72) arranged oppositely, and a first outer peripheral surface (73) and a first inner peripheral surface (74) connecting the first upper end face (71) and the first lower end face (72), the alkaline filter element (8) has a second upper end face (81) and a second lower end face (82) arranged oppositely, and a second outer peripheral surface (83) and a second inner peripheral surface (84) connecting the second upper end face (81) and the second lower end face (82); the upper end cover (5) is arranged on the first upper end face (71) and the second upper end face (81) and blocks one end of the central passage (85), the lower end cover (6) is provided with a second inlet (61), and the lower end cover (6) is arranged on the first lower end face (72) and the second lower end face (82) and the second inlet (61) is connected to the central passage (85) and the fourth opening (241); When the metasilicic acid filter element (7) is sleeved on the outer periphery of the alkaline filter element (8), the first inner peripheral surface (74) abuts the second outer peripheral surface (83) and the second inner peripheral surface (84) surrounds to form the central passage (85); or when the alkaline filter element (8) is sleeved on the outer periphery of the metasilicic acid filter element (7), the second inner peripheral surface (84) abuts the first outer peripheral surface (73) and the first inner peripheral surface (74) surrounds to form the central passage (85).

8. The filter element assembly according to claim 7, wherein The third opening (211) and the fourth opening (241) are arranged at the lower end of the outer sleeve (3), and the outer sleeve (3), the metasilicic acid filter element (7), the alkaline filter element (8), and the central passage (85) are arranged along the same axial direction.

9. The filter element assembly according to claim 7, characterized in that when the metasilicic acid filter material (7) is sleeved on the outer periphery of the alkaline filter material (8), the first inner peripheral surface (74) and the second outer peripheral surface (83) are sintered and fixed; or when the alkaline filter material (8) is sleeved on the outer periphery of the metasilicic acid filter material (7), the first inner peripheral surface (74) and the second outer peripheral surface (83) are sintered and fixed.

10. A mineral water purifier, characterized by, The filter element assembly according to any one of claims 1-9; A device body is in butt joint with the filter element assembly (1). ​

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