Filter element assembly and mineral spring water purifier

Abstract

The invention 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 mineralization filter material and an antagonism filter material, an inner water path is arranged in the filter element assembly, and the mineralization filter material and the antagonism filter material are sequentially connected between a water inlet and a water outlet of the inner water path in series. Compared with the prior art, the mineralized filter material and the antagonistic filter material are matched with each other, and when water in the filter element assembly does not flow, the antagonistic filter material can inhibit dissolution of mineral substances in the mineralized filter material to a certain extent, so that the content of the mineral substances in the mineralized water can be effectively controlled.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment equipment, and in particular to a filter element assembly and a mineral water purifier. Background Art

[0002] With the improvement of productivity, people's demand for quality of life and convenience is also increasing. Mineralized water is a kind of water containing mineral salts, rich in macro- and trace elements necessary for the human body. Therefore, mineralized water is favored by people as drinking water. At the same time, there is a certain demand for mineralized water containing specific mineral salts during production and experiments.

[0003] At present, there are two common ways to prepare mineralized water. The first is to artificially mix mineral salts and water into mineralized water of appropriate concentration, but this method is very troublesome, has a certain threshold of chemical knowledge and is inefficient. The second is to put ore containing mineral salts into a container filled with water, such as a drinking fountain or a water purifier. The mineral salts in the ore can dissolve into the water in the container, turning the water into mineralized water. However, it is difficult to effectively control the mineral content of mineral water prepared by this method. When the mineral content exceeds the standard, it will have a negative impact on the user. Summary of the invention

[0004] In view of this, the present application provides a filter element assembly and a mineral water purifier, which can effectively control the content of minerals in mineralized water.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a filter element assembly, including a mineralized filter material and an antagonistic filter material, wherein an internal water channel is provided in the filter element assembly, and the mineralized filter material and the antagonistic filter material are successively connected in series between the water inlet and the water outlet of the internal water channel.

[0006] In a specific embodiment, the filter element assembly includes a filter cartridge, which is vertically arranged, and the inner water channel is successively provided with a first accommodating chamber and a second accommodating chamber, the mineralized filter material is accommodated in the first accommodating chamber, and the antagonistic filter material is accommodated in the second accommodating chamber, and the first accommodating chamber and the second accommodating chamber are arranged in the filter cartridge along the axial direction of the filter cartridge.

[0007] In a specific embodiment, the first accommodating cavity is disposed above the second accommodating cavity.

[0008] In a specific embodiment, the filter element assembly includes a first isolating member, the first isolating member is provided with at least one first through hole, the first isolating member is arranged between the first accommodating chamber and the second accommodating chamber, and the fluid in the first accommodating chamber enters the second accommodating chamber through at least one first through hole.

[0009] In a specific embodiment, the filter cartridge includes an outer cartridge and a first inner cartridge, the outer cartridge is sleeved on the outer circumference of the first inner cartridge, the first accommodating chamber and the second accommodating chamber are arranged in the first inner cartridge from top to bottom, the upper end of the first inner cartridge is provided with a first inlet, and the lower end is provided with a first outlet, the water inlet and the water outlet are arranged at the lower end of the outer cartridge, the first outlet is connected to the water outlet, and the first inlet is connected to the water inlet.

[0010] In a specific embodiment, the filter element assembly also includes a second isolating member, the second isolating member is provided with at least one second through hole, the inner water circuit includes a first water inlet circuit, and the first water inlet circuit is arranged between the outer cylinder and the first inner cylinder; the second isolating member is covered on the first inlet, and the fluid in the first water inlet circuit enters the first accommodating chamber through at least one second through hole; and / or the second isolating member is arranged between the second accommodating chamber and the first outlet, and the fluid in the second accommodating chamber enters the first outlet through at least one second through hole.

[0011] In a specific embodiment, the filter cartridge includes an outer cylinder and a second inner cylinder, the outer cylinder is sleeved on the outer circumference of the second inner cylinder, the second accommodating chamber is arranged in the second inner cylinder, and the mineralized filter material and the second inner cylinder are arranged from top to bottom along the axial direction of the filter cartridge; the upper end of the second inner cylinder is provided with a second inlet, and the lower end is provided with a second outlet, the water inlet and the water outlet are arranged at the lower end of the outer cylinder, the first isolation member covers the second inlet, and the second outlet is connected to the water outlet.

[0012] In a specific embodiment, the filter element assembly also includes a first end cover, a first central channel is provided in the mineralized filter material, the first end cover and the first isolation member are respectively covered at both ends of the mineralized filter material, one end of the first central channel is blocked by the first end cover, and the other end is connected to the first through hole.

[0013] In a specific embodiment, the filter element assembly also includes a second end cover, a second central channel is provided in the antagonistic filter material, one end of the antagonistic filter material is connected to the second inner tube, and the other end cover is provided with the second end cover, one end of the second central channel is connected to the second outlet of the second inner tube, and the other end is blocked by the second end cover.

[0014] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a mineral water purifier, including an equipment body and a filter element assembly as described in any of the above specific embodiments, and the equipment body is connected to the water inlet and outlet of the filter element assembly.

[0015] The beneficial effects of the present application include: the mineralized filter material and the antagonistic filter material are successively arranged in series in the internal water channel of the filter element assembly; when the filter element assembly continuously discharges water, the minerals in the mineralized filter material are normally dissolved into the flowing water, and the antagonistic substances in the antagonistic filter material can also be normally dissolved into the flowing water; since the antagonistic filter material is arranged downstream of the mineralized filter material, the antagonistic substances will not affect the dissolution of minerals in the flowing water state; and since the flowing water stays in the mineralized filter material for a short time, the risk of exceeding the standard for the mineral content in the flowing water is relatively low. In the soaking state where the filter element assembly stops discharging water, the soaking water in the inner waterway no longer flows through the mineralized filter material first and then through the antagonistic filter material. The soaking water connects the mineralized filter material and the antagonistic filter material, so that the antagonistic substance can also move to the mineralized filter material. In the soaking state, the soaking water and the mineralized filter material have sufficient contact time. The antagonistic substance can inhibit the large-scale dissolution of minerals into the soaking water, thereby controlling the mineral content of the soaking water and reducing the impact of the soaking state on the service life of the mineralized filter material. The filter element assembly structure provided by the present application can effectively control the content of minerals in the mineralized water regardless of the flow state or the soaking state, thereby improving the stability and availability of the filter element assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the assembly structure of the filter element assembly provided in this application;

[0018] Figure 2 A schematic cross-sectional view of a filter element assembly according to an embodiment of the present application without a mineralized filter material or an antagonistic filter material;

[0019] Figure 3 A schematic cross-sectional view of an embodiment of a filter element assembly provided in the present application;

[0020] Figure 4 This is an exploded cross-sectional structural diagram of an embodiment of a filter element assembly provided in the present application;

[0021] Figure 5 A schematic cross-sectional view of another embodiment of the filter element assembly provided in the present application, which does not include a mineralized filter material or an antagonistic filter material;

[0022] Figure 6 A schematic cross-sectional view of another embodiment of the filter element assembly provided in the present application;

[0023] Figure 7This is an exploded cross-sectional structural schematic diagram of another embodiment of the filter element assembly provided in the present application;

[0024] Figure 8 It is H2CO3-HCO 3- -CO3 2- Balance figure in water.

[0025] Description of reference numerals:

[0026] 1. Filter element assembly; 2. Inner water circuit; 21. First water inlet circuit; 22. Water inlet; 23. Water outlet; 3. Filter cartridge; 31. Outer cartridge; 32. First inner cartridge; 321. First inlet; 322. First outlet; 33. Second inner cartridge; 331. Second inlet; 332. Second outlet; 4. First spacer; 41. First through hole; 5. Second spacer; 51. Second through hole; 61. First end cover; 62. Second end cover; 7. Docking piece; 8. First accommodating chamber; 81. Mineralized filter material; 82. First central channel; 9. Second accommodating chamber; 91. Antagonistic filter material; 92. Second central channel. DETAILED DESCRIPTION

[0027] In this application, the terms "disposed", "provided with", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] The orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0031] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] With the improvement of productivity, people's demand for quality of life and convenience is also increasing. Mineralized water is a kind of water containing mineral salts, rich in macro- and trace elements necessary for the human body. Therefore, mineralized water is favored by people as drinking water. At the same time, there is a certain demand for mineralized water containing specific mineral salts during production and experiments.

[0033] At present, there are two common ways to prepare mineralized water. The first is to artificially mix mineral salts and water into mineralized water of appropriate concentration, but this method is very troublesome, has a certain threshold of chemical knowledge and is inefficient. The second is to put ore containing mineral salts into a container filled with water, such as a drinking fountain or a water purifier. The mineral salts in the ore can dissolve into the water in the container, turning the water into mineralized water. However, it is difficult to effectively control the mineral content of mineral water prepared by this method. When the mineral content exceeds the standard, it will have a negative impact on the user.

[0034] In order to improve or solve the above technical problems, the inventors of the present application have proposed at least the following embodiments after long-term research.

[0035] See also Figure 1 to Figure 7 , Figure 1 A schematic diagram of the assembly structure of the filter element assembly provided in this application. Figure 2 A schematic cross-sectional structure diagram of a filter element assembly without mineralized filter material and antagonistic filter material according to an embodiment of the present application. Figure 3 A schematic cross-sectional view of an embodiment of a filter element assembly provided in the present application. Figure 4 This is a schematic diagram of the exploded cross-sectional structure of an embodiment of the filter element assembly provided in the present application. Figure 5 A schematic cross-sectional structure diagram of another embodiment of the filter element assembly provided in the present application, which does not include mineralized filter material and antagonistic filter material. Figure 6 A schematic cross-sectional view of another embodiment of the filter element assembly provided in the present application. Figure 7This is an exploded cross-sectional structural diagram of another embodiment of the filter element assembly provided by the present application. The specific embodiment of the present application provides a filter element assembly 1 for processing fluids. The filter element assembly 1 may include a mineralized filter material 81 and an antagonistic filter material 91 .

[0036] The filter element assembly 1 is provided with an inner waterway 2, and the mineralized filter material 81 and the antagonistic filter material 91 are connected in series between the water inlet 22 and the water outlet 23 of the inner waterway 2. The mineralized filter material 81 contains soluble minerals, and the antagonistic filter material 91 contains antagonistic substances that can inhibit the mineralized filter material 81 from dissolving minerals.

[0037] In the structure provided in this specific embodiment, the mineralized filter material 81 and the antagonistic filter material 91 are successively arranged in series in the inner water channel 2 of the filter element assembly 1. In the overflow state where the filter element assembly 1 continuously discharges water, the minerals in the mineralized filter material 81 are normally dissolved into the flowing water, and the antagonistic substances in the antagonistic filter material 91 can also be normally dissolved into the flowing water. Since the antagonistic filter material 91 is arranged downstream of the mineralized filter material 81, the antagonistic substances do not affect the dissolution of minerals in the overflow state, and since the flowing water stays in the mineralized filter material 81 for a short time, the risk of excessive mineral content in the flowing water is low.

[0038] In the soaking state where the filter element assembly 1 stops discharging water, the soaking water in the inner waterway 2 no longer flows through the mineralized filter material 81 first and then through the antagonistic filter material 91. The soaking water connects the mineralized filter material 81 and the antagonistic filter material 91, so that the antagonistic substance can also move to the mineralized filter material 81. In the soaking state, the soaking water has sufficient contact time with the mineralized filter material 81. The antagonistic substance can inhibit the large-scale dissolution of minerals into the soaking water, thereby controlling the mineral content of the soaking water and reducing the impact of the soaking state on the service life of the mineralized filter material 81. The structure of the filter element assembly 1 provided by the present application can effectively control the content of minerals in the mineralized water regardless of the flow state or the soaking state, thereby improving the stability and availability of the filter element assembly 1.

[0039] Exemplarily, the mineralized filter material 81 can be a zinc mineralized filter material 81 or a copper mineralized filter material 81, that is, the mineralized filter material 81 contains zinc and / or copper. The antagonistic filter material 91 can be an alkaline filter material. The alkaline substances dissolved from the antagonistic filter material 91 can inhibit the dissolution of zinc and copper elements in the mineralized filter material 81. Optionally, the antagonistic filter material 91 can include at least one of calcite, aragonite, magnesite, dolomite and other materials. The mineralized filter material 81 can include at least one of smithsonite, calamine, hydrozincite and other materials.

[0040] Specifically, the dissolution reaction of zinc element (zinc-containing filter, such as smithsonite) in water is: ZnCO3=Zn 2+ +CO3 2-Under normal conditions (such as pure water obtained after RO membrane filtration), Zn 2+ The saturated solubility of Zn in water can reach 6.0 mg / L, far exceeding the national standard limit of 1.0 mg / L. 2+ and CO3 2- are dissolved synchronously. Therefore, CO3 2- The concentration of Zn can be controlled at the lowest level. 2+ The saturated dissolution concentration is controlled at the lowest level.

[0041] like Figure 8 As shown, Figure 8 It is H2CO3-HCO 3- -CO3 2- Equilibrium diagram in water. When the pH value of the water body is acidic, due to the H + Too much plasma inhibits the hydrolysis of H2CO3 to continue releasing H + As the pH value of the water body gradually increases, the H + As the plasma gradually decreases, the inhibitory effect on the hydrolysis of H2CO3 gradually decreases. + The ions are gradually hydrolyzed and released, and the H2CO3 in the water is first converted into HCO 3- As the pH value of the water body continues to rise, HCO 3- H + Ions also begin to release, HCO 3- Gradually converted into CO3 2- It is not difficult to see that CO3 2- The content in water has a clear correlation with the pH value of the water.

[0042] When the pH value is (approximately) 8.3, CO3 2- The concentration of Zn 2+ The concentration of the soaking water is also at the lowest level, theoretically calculated to be 0.36 mg / L, which meets the standard limit. That is, by adjusting the pH value of the water soaked in the zinc-containing filter to about 8.3, Zn 2+ The concentration is precisely controlled between 0.2-1.0 mg / L.

[0043] An example is provided below to show the effect of different alkaline water pH values ​​on the zinc concentration in the soaking water. A modified smithsonite with a pore-forming agent ratio of 2% and a solvent ratio of 1.0% was selected, and the instantaneous zinc concentration of the effluent at a flow rate of 1000L and the zinc concentration of the soaking water after soaking for 12 hours were recorded to obtain Table 1.

[0044] Table 1

[0045]

[0046]

[0047] Refer to Table 1. When no alkaline substances are added, the pH of the soaking water is 6, which is weakly acidic water. At this time, the zinc dissolution of the flow water and soaking water is not inhibited, and the zinc concentration of the soaking water is high, exceeding the standard limit. When the pH of the soaking water is 7.2, the zinc concentration of the soaking water still exceeds the standard. When the pH of the soaking water is between 8.0-8.5, CO3 2 - concentration is at its lowest level, when Zn 2+ The concentration of soaking water is also at the lowest level, between 0.2-1.0 mg / L, which meets the standard. When the pH of soaking water is 9.0, the alkalinity of alkaline substances is relatively strong, and the dissolution of zinc is excessively suppressed during the flow. The zinc concentration of the flow and soaking water is lower than 0.2 mg / L, which does not meet the standard.

[0048] Optionally, the mineralized filter material 81 can be a mineralized filter material 81 for adjusting the pH value of water quality, and the antagonistic filter material 91 is a neutralizing filter material for neutralizing the pH value of water quality. The minerals dissolved from the mineralized filter material 81 can increase the pH value of the water body. In specific applications, the pH value of the water body can be adjusted by the minerals, and the antagonistic filter material 91 can be used to neutralize the minerals to control the pH value of the water body, so that the pH value of the overall effluent can be stabilized within a set pH range (generally 7.0 to 9.0).

[0049] In a specific embodiment of the present application, the filter element assembly 1 may specifically include a filter cartridge 3, which is arranged vertically. The inner waterway 2 is successively provided with a first accommodating chamber 8 and a second accommodating chamber 9, the mineralized filter material 81 is accommodated in the first accommodating chamber 8, and the antagonistic filter material 91 is accommodated in the second accommodating chamber 9. The first accommodating chamber 8 and the second accommodating chamber 9 are arranged in the filter cartridge 3 along the axial direction of the filter cartridge 3.

[0050] In the structure provided in this specific embodiment, the filter cartridge 3 of the filter element assembly 1 is vertically arranged, and the first accommodating chamber 8 and the second accommodating chamber 9 are also arranged vertically. Regardless of the flow state or the immersion state, the water in the filter element assembly 1 can contact the mineralized filter material 81 and the antagonistic filter material 91, thereby effectively controlling the mineral content in the mineralized water and improving the stability and availability of the filter element assembly 1.

[0051] In a specific embodiment of the present application, the first accommodating cavity 8 is disposed above the second accommodating cavity 9 .

[0052] In the structure provided in this specific embodiment, the first accommodating chamber 8 is arranged above the second accommodating chamber 9. In the overflow state, the water body can enter the second accommodating chamber 9 through the mineralized filter material 81 in the first accommodating chamber 8 under the action of gravity, and due to the existence of gravity, the probability of backflow is low and the filtering process can be promoted. In the soaking state, the water bodies in the first accommodating chamber 8 and the second accommodating chamber 9 can also flow to each other, so whether in the overflow state or the soaking state, the content of minerals in the mineralized water can be effectively controlled, thereby improving the stability and usability of the filter element assembly 1.

[0053] In a specific embodiment of the present application, the filter element assembly 1 includes a first isolating member 4, and the first isolating member 4 is provided with at least one first through hole 41. The first isolating member 4 is disposed between the first accommodating chamber 8 and the second accommodating chamber 9, and the fluid in the first accommodating chamber 8 enters the second accommodating chamber 9 through the at least one first through hole 41.

[0054] In the structure provided in this specific embodiment, the first isolation member 4 is used to separate the first accommodating chamber 8 and the second accommodating chamber 9, so that the water in the first accommodating chamber 8 can only enter the second accommodating chamber 9 through the first through hole 41, thereby utilizing the first through hole 41 to limit the flow of water between the first accommodating chamber 8 and the second accommodating chamber 9, such as controlling the flow rate, flow rate and flow direction, so that the water between the first accommodating chamber 8 and the second accommodating chamber 9 can flow evenly, thereby improving the stability and availability of the filter element assembly 1.

[0055] Optionally, the number of the first through holes 41 can be multiple, and the multiple first through holes 41 are evenly opened on the first isolating member 4, so that the fluid between the first accommodating chamber 8 and the second accommodating chamber 9 can flow evenly through the multiple first through holes 41. This can avoid the problem that the water flow between the first accommodating chamber 8 and the second accommodating chamber 9 is too concentrated, resulting in excessive flow velocity and severe scouring at a local position, thereby affecting the service life of the mineralized filter material 81 and the antagonistic filter material 91.

Claims

1. A filter element assembly, characterized in that: It comprises a mineralized filter material (81) and an antagonistic filter material (91), wherein the filter element assembly (1) is provided with an internal waterway (2), and the mineralized filter material (81) and the antagonistic filter material (91) are serially connected between a water inlet (22) and a water outlet (23) of the internal waterway (2).

2. The filter element assembly according to claim 1, characterized in that: The filter element assembly (1) comprises a filter cartridge (3), the filter cartridge (3) being arranged vertically, the inner waterway (2) being provided with a first accommodating chamber (8) and a second accommodating chamber (9) in sequence, the mineralized filter material (81) being accommodated in the first accommodating chamber (8), the antagonistic filter material (91) being accommodated in the second accommodating chamber (9), and the first accommodating chamber (8) and the second accommodating chamber (9) being arranged in the filter cartridge (3) along the axial direction of the filter cartridge (3).

3. The filter element assembly according to claim 2, characterized in that: The first accommodating cavity (8) is arranged above the second accommodating cavity (9).

4. The filter element assembly according to claim 3, characterized in that: The filter element assembly (1) comprises a first isolating member (4), the first isolating member (4) being provided with at least one first through hole (41), the first isolating member (4) being arranged between the first accommodating chamber (8) and the second accommodating chamber (9), and the fluid in the first accommodating chamber (8) enters the second accommodating chamber (9) through the at least one first through hole (41).

5. The filter element assembly according to claim 4, characterized in that: The filter cartridge (3) comprises an outer cartridge (31) and a first inner cartridge (32); the outer cartridge (31) is sleeved on the outer circumference of the first inner cartridge (32); the first accommodating chamber (8) and the second accommodating chamber (9) are arranged in the first inner cartridge (32) from top to bottom; the first inner cartridge (32) is provided with a first inlet (321) at the upper end and a first outlet (322) at the lower end; the water inlet (22) and the water outlet (23) are arranged at the lower end of the outer cartridge (31); the first outlet (322) is connected to the water outlet (23); and the first inlet (321) is connected to the water inlet (22).

6. The filter element assembly according to claim 5, characterized in that: The filter element assembly (1) further comprises a second isolating member (5), the second isolating member (5) being provided with at least one second through hole (51), the inner water path (2) comprising a first water inlet path (21), the first water inlet path (21) being arranged between the outer cylinder (31) and the first inner cylinder (32); The second isolating member (5) is covered on the first inlet (321), and the fluid in the first water inlet path (21) enters the first accommodating chamber (8) through at least one of the second through holes (51); and / or the second isolating member (5) is arranged between the second accommodating chamber (9) and the first outlet (322), and the fluid in the second accommodating chamber (9) enters the first outlet (322) through at least one of the second through holes (51).

7. The filter element assembly according to claim 4, characterized in that: The filter cartridge (3) comprises an outer cartridge (31) and a second inner cartridge (33); the outer cartridge (31) is sleeved on the outer circumference of the second inner cartridge (33); the second accommodating chamber (9) is arranged in the second inner cartridge (33); the mineralized filter material (81) and the second inner cartridge (33) are arranged from top to bottom along the axial direction of the filter cartridge (3); the second inner cartridge (33) is provided with a second inlet (331) at the upper end and a second outlet (332) at the lower end; the water inlet (22) and the water outlet (23) are arranged at the lower end of the outer cartridge (31); the first isolating member (4) is covered on the second inlet (331); and the second outlet (332) is connected to the water outlet (23).

8. The filter element assembly according to claim 7, characterized in that: The filter element assembly (1) further comprises a first end cover (61), a first central channel (82) is provided in the mineralized filter material (81), the first end cover (61) and the first isolating member (4) are respectively provided at two ends of the mineralized filter material (81), one end of the first central channel (82) is blocked by the first end cover (61), and the other end is connected to the first through hole (41).

9. The filter element assembly according to claim 8, characterized in that: The filter element assembly (1) further comprises a second end cover (62), a second central channel (92) is provided in the antagonistic filter material (91), one end of the antagonistic filter material (91) is connected to the second inner tube (33), and the other end cover is provided with the second end cover (62), one end of the second central channel (92) is connected to the second outlet (332) of the second inner tube (33), and the other end is blocked by the second end cover (62).

10. A mineral water purifier, characterized in that: include: The filter element assembly (1) according to any one of claims 1 to 9; The device body is connected to the water inlet (22) and the water outlet (23) of the filter element assembly (1).

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