Electrodeionization filter cartridges and water purifiers including such electrodeionization filter cartridges

Abstract

The present application relates to the technical field of water purification filter core, and particularly provides an electrodeionization filter core and a water purifier comprising the same. The electrodeionization filter core comprises a shell, a first water inlet and a second water inlet arranged on the shell, at least one set of electrodialysis components between the first water inlet and the second water inlet, and a descaling component. The electrodialysis components comprise a water-permeable cathode plate, a proton exchange membrane and a water-permeable anode plate arranged along the central axis of the shell in sequence. One end of the descaling component is attached to the surface of the water-permeable cathode plate, and the descaling component is rotated to remove the deposits accumulated on the surface of the water-permeable cathode plate. Through such a configuration, the ions in the water are deposited on the surface of the water-permeable cathode plate under the action of an electric field, and the deposits accumulated on the surface of the water-permeable cathode plate are removed by means of the descaling component, thereby improving the convenience of cleaning the deposits and the electrodialysis efficiency of the filter core, and enhancing the user experience.

Description

Technical Field

[0001] This invention relates to the field of water purification filter technology, specifically providing an electro-deionization filter and a water purifier including the electro-deionization filter. Background Technology

[0002] Ordinary water purifiers typically use reverse osmosis filters to intercept and filter bacteria, inorganic salts, and organic matter in the water. However, in actual use, the reverse osmosis filter becomes contaminated and scaled, which reduces its filtration efficiency.

[0003] Electrodialysis, under the influence of a direct current electric field, utilizes the selective permeability of ion exchange membranes to allow charged ions to migrate directionally through the membranes, separating them from aqueous solutions and other uncharged components. This achieves the purpose of concentration, desalination, purification, and refinement of solutions. However, when using this method to produce water in filter cartridges, ions in the water are prone to forming scale at the cathode, reducing the efficiency of electrodialysis in purifying pure water and resulting in a poor user experience.

[0004] Accordingly, there is a need in the art for a new type of electro-deionization filter to address the aforementioned problems. Summary of the Invention

[0005] In order to solve the above-mentioned problems in the existing technology, namely, to solve the problem of the reduced efficiency of the filter element in purifying pure water due to cathode scaling in the existing electro-deionization filter element.

[0006] In a first aspect, the present invention provides an electro-deionization filter element, the electro-deionization filter element comprising a housing, a first water inlet and a second water inlet disposed on the housing, at least one set of electrodialysis components and a descaling component located between the first water inlet and the second water inlet; the electrodialysis component comprising a permeable cathode plate, a proton exchange membrane and a permeable anode plate arranged sequentially along the central axis of the housing; wherein, one end of the descaling component is attached to the surface of the permeable cathode plate, and the descaling component is rotated to remove deposits accumulated on the surface of the permeable cathode plate.

[0007] In the preferred embodiment of the above-mentioned electro-deionization filter element, the descaling assembly includes a scraper rod, a brush fixed to the scraper rod, and a water-permeable rotating shaft tube. The water-permeable rotating shaft tube is located on the central axis of the housing and is rotatably connected to the housing. The brush is attached to the surface of the water-permeable cathode plate, and the water-permeable rotating shaft tube drives the scraper rod to rotate on the surface of the water-permeable cathode plate.

[0008] In the preferred embodiment of the above-mentioned electro-deionization filter element, the number of electrodialysis components is multiple sets, and the multiple sets of electrodialysis components are stacked sequentially along the central axis of the shell. The permeable rotating tube passes through at least one set of the electrodialysis components, including the permeable cathode plate, the proton exchange membrane, and the permeable anode plate.

[0009] In the preferred embodiment of the above-mentioned electro-deionization filter element, the electrodialysis assembly further includes a support shell, which fixes the permeable cathode plate, the permeable anode plate, and the proton exchange membrane.

[0010] In the preferred embodiment of the above-mentioned electro-deionization filter element, there is a gap channel between the support shell and the housing, the gap channel including a first gap channel and a second gap channel, and a first opening and a second opening are provided on the side wall of the support shell; the first opening is opposite to the water-permeable cathode plate, and the second opening is opposite to the water-permeable anode plate; wherein, the first water inlet and the first opening are both connected to the first gap channel, the second opening is connected to the second gap channel, and the second opening is also connected to the second water inlet.

[0011] In the preferred embodiment of the above-mentioned electro-deionization filter element, there are multiple scraper rods, which are evenly distributed in the circumferential direction of the water-permeable rotating tube.

[0012] In the preferred embodiment of the above-mentioned electro-deionization filter element, the water-permeable rotating tube has a through hole, which is arranged opposite to the brush.

[0013] In the preferred embodiment of the above-mentioned electro-deionization filter element, the scraper rod is either a straight structure with an inclined angle to the radial direction of the water-permeable rotating tube, or the scraper rod is an arc-shaped structure.

[0014] In the preferred embodiment of the above-mentioned electro-deionization filter element, the permeable cathode plate includes a cathode terminal, the permeable anode plate includes an anode terminal, and both the cathode terminal and the anode terminal pass through the support shell and the housing and are electrically connected to the power supply unit.

[0015] In a second aspect, the present invention provides a water purifier including the aforementioned electro-deionization filter element.

[0016] Those skilled in the art will understand that the electro-deionization filter element of the present invention includes a housing, a first water inlet and a second water inlet disposed on the housing, at least one set of electrodialysis components and a descaling component located between the first water inlet and the second water inlet; the electrodialysis component includes a permeable cathode plate, a proton exchange membrane, and a permeable anode plate arranged sequentially along the central axis of the housing; wherein, one end of the descaling component is attached to the surface of the permeable cathode plate, and rotating the descaling component removes the deposits accumulated on the surface of the permeable cathode plate. With this arrangement, when the permeable anode plate and the permeable cathode plate are powered on and the raw water is subjected to electrodialysis filtration and purification, ions in the water are deposited on the surface of the permeable cathode plate under the action of the electric field, and the deposits accumulated on the surface of the permeable cathode plate are removed by means of the descaling component, which improves the convenience of cleaning deposits and the electrodialysis efficiency of the filter element, and enhances the user experience.

[0017] Furthermore, the descaling assembly includes a scraper rod, a brush fixed to the scraper rod, and a water-permeable rotating shaft. The water-permeable rotating shaft is located on the central axis of the housing and rotatably connected to the housing. The brush rests against the surface of the water-permeable cathode plate, and the water-permeable rotating shaft drives the scraper rod to rotate on the surface of the water-permeable cathode plate. With this configuration, an external power source can be transmitted to the scraper rod via the water-permeable rotating shaft, while deposits are discharged from the housing chamber through the water-permeable rotating shaft, improving the convenience of filter element descaling.

[0018] Furthermore, the electrodialysis modules are arranged in multiple sets, stacked sequentially along the central axis of the shell. The permeable shaft tube passes through at least one set of the electrodialysis modules, including the permeable cathode plate, proton exchange membrane, and permeable anode plate. This arrangement allows power to be transmitted to the scraper rod on the permeable cathode plate in each set of electrodialysis modules via a single permeable shaft tube, simplifying and reducing design costs.

[0019] Furthermore, the electrodialysis module also includes a support shell that secures the permeable cathode plate, permeable anode plate, and proton exchange membrane. This arrangement allows the permeable cathode plate, permeable anode plate, and proton exchange membrane to be assembled into a single, modular unit, improving the ease of installation and disassembly of the electrodialysis module within the housing.

[0020] Furthermore, a gap channel exists between the support shell and the housing, including a first gap channel and a second gap channel. The side wall of the support shell has a first opening and a second opening. The first opening faces the permeable cathode plate, and the second opening faces the permeable anode plate. The first water inlet and the first opening are both connected to the first gap channel, and the second opening is connected to the second gap channel and also to the second water inlet. This arrangement separates the support shell and the housing into the first gap channel and the second gap channel, facilitating the parallel connection of multiple electrodialysis components within the housing, thereby improving the water production efficiency and output of the filter element.

[0021] Furthermore, the permeable shaft tube has through holes, which are positioned opposite to the brush. This design facilitates the removal of deposits after they have been cleaned by the brush, allowing them to pass through the through holes into the permeable shaft tube and be discharged outwards, thus improving the efficiency of descaling and rinsing the filter element.

[0022] Furthermore, the scraper rod can be a straight structure with an inclined angle to the radial direction of the permeable rotating pipe, or the scraper rod can be an arc-shaped structure. With this configuration, adjusting the rotation direction of the scraper rod causes the deposits on the surface of the permeable cathode plate to converge along the scraper rod towards the center of the permeable rotating pipe, so that the deposits can be quickly entered into the through-hole of the permeable rotating pipe and flushed out.

[0023] Furthermore, the water purifier provided by the present invention, based on the above technical solution, includes the aforementioned electro-deionization filter element, and thus possesses the technical effects of the aforementioned electro-deionization filter element. Compared with the water purifier before the improvement, the water purifier of the present invention is more convenient for descaling and improves the user experience. Attached Figure Description

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0025] Figure 1 This is a schematic diagram of the water production state of a first embodiment of the electro-deionization filter element of the present invention;

[0026] Figure 2 This is a schematic diagram of the cleaning state of a first embodiment of the electro-deionization filter element of the present invention;

[0027] Figure 3 This is a schematic diagram of the water production state in Embodiment 2 of the electro-deionization filter element of the present invention;

[0028] Figure 4 This is a schematic diagram of the cleaning state of Embodiment 2 of the electro-deionization filter element of the present invention;

[0029] Figure 5 This is a schematic diagram of a preferred embodiment of the descaling component of the electro-deionization filter element of the present invention;

[0030] Figure 6 This is a schematic diagram of a preferred embodiment of the descaling component of the electro-deionization filter element of the present invention.

[0031] List of reference numerals in the attached diagram:

[0032] 1. Shell; 11. First water inlet; 12. Second water inlet; 131. First gap channel; 132. Second gap channel; 2. Support shell; 21. First opening; 22. Second opening; 3. Permeable cathode plate; 31. Slit; 4. Permeable anode plate; 41. First water-permeable hole; 5. Proton exchange membrane; 51. Second water-permeable hole; 61. Scraper rod; 62. Brush; 63. Permeable rotating shaft tube; 631. Hollow channel; 632. Through hole; 71. Cathode terminal; 72. Anode terminal. Detailed Implementation

[0033] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0034] It should be noted that in the description of this invention, terms such as "upper," "lower," "inner," and "outer" that indicate direction or positional relationship are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0035] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Based on the background art, this invention addresses the problem of reduced water purification efficiency due to cathode scaling in existing electro-deionization filter cartridges. It provides an electro-deionization filter cartridge that incorporates a descaling component to remove deposits from the cathode surface, thereby improving the user experience.

[0037] Specifically, such as Figures 1 to 6As shown, the electro-deionization filter element of the present invention includes a housing 1, a first water inlet 11 (i.e., water inlet) disposed at the upper end of the housing 1, a second water inlet 12 (i.e., water outlet) disposed at the lower end of the housing 1, at least one set of electrodialysis components and descaling components located between the first water inlet 11 and the second water inlet 12. The housing 1 has a cylindrical structure. The electrodialysis component includes a permeable cathode plate 3, a permeable anode plate 4, and a proton exchange membrane 5 located between the permeable cathode plate 3 and the permeable anode plate 4; the permeable cathode plate 3, the proton exchange membrane 5, and the permeable anode plate 4 are arranged sequentially along the central axis of the housing 1. One end of the descaling component is attached to the surface of the permeable cathode plate 3. When the permeable anode plate 4 and the permeable cathode plate 3 are powered on and the raw water is purified by electrodialysis filtration, ions in the water are deposited on the surface of the permeable cathode plate 3 under the action of the electric field. Rotating the descaling component can remove the deposits accumulated on the surface of the permeable cathode plate 3.

[0038] The structure of this electro-deionization filter element is described in detail below through two examples.

[0039] Example 1

[0040] like Figures 1 to 2 As shown, the electro-deionization filter element of this embodiment includes a housing 1 and seven sets of electrodialysis components disposed within the housing 1. The descaling components include a scraper rod 61, a brush 62 fixed to the scraper rod 61, and a water-permeable rotating shaft tube 63. The water-permeable rotating shaft tube 63 is located on the central axis of the housing 1 and is rotatably connected to the housing 1. The brush 62 rests against the surface of the water-permeable cathode plate 3, and the water-permeable rotating shaft tube 63 drives the scraper rod 61 to rotate on the surface of the water-permeable cathode plate 3. The upper end of the water-permeable rotating shaft tube 63 is located on the outside of the housing 1, serving as the power input end.

[0041] More specifically, such as Figures 1 to 2 As shown, the electrodialysis assembly also includes a support shell 2, which connects and fixes the permeable cathode plates 3, permeable anode plates 4, and proton exchange membranes 5 in series among the seven electrodialysis assemblies. The seven electrodialysis assemblies are stacked sequentially along the central axis of the shell 1. A permeable rotating shaft tube 63 passes through the permeable cathode plates 3, proton exchange membranes 5, and permeable anode plates 4 in six of the electrodialysis assemblies from top to bottom. Seven sets of scraper rods 61 are fixed on the permeable rotating shaft tube 63, and the seven sets of scraper rods 61 are respectively positioned opposite to the permeable cathode plates 3 in the seven electrodialysis assemblies. The permeable rotating shaft tube 63 has multiple through holes 632, each through hole 632 is arranged opposite to the brush 62 on each set of scraper rods 61, and the permeable rotating shaft tube 63 has a hollow channel 631. When cleaning the filter element, after the brush 62 scrapes up the deposits on the surface of the permeable cathode plate 3, the deposits can be discharged outward by the water flow through the through holes 632 of the permeable rotating shaft tube 63 into the hollow channel 631.

[0042] like Figures 1 to 2As shown, the permeable anode plate 4 has multiple first permeable holes 41, and the proton exchange membrane 5 has multiple second permeable holes 51, with the multiple first permeable holes 41 and the multiple second permeable holes 51 arranged opposite to each other. The permeable cathode plate 3 has multiple slits 31, which are staggered with the multiple second permeable holes 51 on the proton exchange membrane 5. In this way, water can flow rapidly downstream after passing through the permeable cathode plate 3 and the proton exchange membrane 5.

[0043] Continue to refer to, for example Figures 1 to 2 The permeable cathode plate 3 includes a cathode terminal, and the permeable anode plate 4 includes an anode terminal. Each cathode terminal passes through the support shell 2 and is connected in parallel to form a cathode terminal 71, which then passes through the shell 1 and is electrically connected to the negative electrode of the power supply unit. Each anode terminal passes through the support shell 2 and is connected in parallel to form an anode terminal 72, which then passes through the shell 1 and is electrically connected to the positive electrode of the power supply unit.

[0044] like Figure 1 As shown, with the permeable cathode plate 3 and permeable anode plate 4 connected to a DC power supply, the raw water passes through the first inlet 11 on the housing 1 and sequentially through seven sets of electrodialysis components for electrodialysis filtration. The filtered pure water then flows out through the second inlet 12. With this setup, the raw water is filtered through seven sets of electrodialysis components, resulting in higher quality pure water produced by the filter element.

[0045] like Figure 2 As shown, when cleaning the filter element, close the second water inlet 12, open and keep the hollow channel 631 of the permeable rotating shaft tube 63 unobstructed, rotate the permeable rotating shaft tube 63 so that the brush 62 on the scraper bar scrapes up the deposits on the surface of the permeable cathode plate 3. The deposits flow with the water through the through hole 632 on the permeable rotating shaft tube 63 and enter the hollow channel 631 to be discharged out of the housing 1 to complete the rinsing of the filter element.

[0046] Example 2

[0047] like Figures 3 to 4 As shown, the electro-deionization filter element of this embodiment includes a housing 1 and seven sets of electrodialysis components disposed within the housing 1. The descaling components include a scraper rod 61, a brush 62 fixed to the scraper rod 61, and a water-permeable rotating shaft tube 63. The water-permeable rotating shaft tube 63 is located on the central axis of the housing 1 and rotatably connected to the housing 1. The brush 62 rests against the surface of the water-permeable cathode plate 3, and the water-permeable rotating shaft tube 63 drives the scraper rod 61 to rotate on the surface of the water-permeable cathode plate 3. The upper end of the water-permeable rotating shaft tube 63 is located on the outside of the housing 1, and this end serves as the input end of the power source.

[0048] More specifically, such as Figures 3 to 4As shown, the electrodialysis assembly also includes a support shell 2, which connects and fixes the permeable cathode plates 3, permeable anode plates 4, and proton exchange membranes 5 in parallel among the seven electrodialysis assemblies. The seven electrodialysis assemblies are stacked sequentially along the central axis of the shell 1, and a permeable rotating shaft tube 63 passes through the permeable cathode plates 3, proton exchange membranes 5, and permeable anode plates 4 in six of the electrodialysis assemblies from top to bottom. Seven sets of scraper rods 61 are fixed on the permeable rotating shaft tube 63, and the seven sets of scraper rods 61 are respectively positioned opposite to the permeable cathode plates 3 in the seven electrodialysis assemblies. The permeable rotating shaft tube 63 has multiple through holes 632, each through hole 632 is arranged opposite to the brush 62 on each set of scraper rods 61, and the permeable rotating shaft tube 63 has a hollow channel 631. When cleaning the filter element, after the brush 62 scrapes up the deposits on the surface of the permeable cathode plate 3, the deposits can be discharged outward by the water flow through the through holes 632 of the permeable rotating shaft tube 63 into the hollow channel 631.

[0049] like Figures 3 to 4 As shown, a gap channel exists between the support shell 2 and the shell 1. The support shell 2 divides the gap channel into a first gap channel 131 and a second gap channel 132 along the length of the shell 1. Multiple first openings 21 and multiple second openings 22 are provided on the side wall of the support shell 2. Each first opening 21 is opposite to the permeable cathode plate 3 in each electrodialysis assembly, and each second opening 22 is opposite to the permeable anode plate 4 in each electrodialysis assembly. The first water inlet 11 and each first opening 21 are connected to the first gap channel 131, and each second opening 22 is connected to the second gap channel 132. One of the second openings 22 (on the support shell 2 of the lowest electrodialysis assembly) is also connected to the second water inlet 12.

[0050] like Figures 3 to 4 As shown, the permeable anode plate 4 has multiple first permeable holes 41, and the proton exchange membrane 5 has multiple second permeable holes 51, with the multiple first permeable holes 41 and the multiple second permeable holes 51 arranged opposite to each other. The permeable cathode plate 3 has multiple slits 31, which are staggered with the multiple second permeable holes 51 on the proton exchange membrane 5. In this way, water can flow rapidly downstream after passing through the permeable cathode plate 3 and the proton exchange membrane 5.

[0051] It should be noted that the permeable cathode plate 3 includes a cathode terminal and the permeable anode plate 4 includes an anode terminal. The specific wiring methods of the cathode terminal and the anode terminal are the same as those in Embodiment 1, so they will not be described in detail.

[0052] like Figure 3As shown, when the permeable cathode plate 3 and permeable anode plate 4 are connected to a DC power supply, raw water enters the first gap channel 131 through the first water inlet 11 on the housing 1. The water entering the first gap channel 131 is then diverted through multiple first openings 21 into each group of electrodialysis components for electrodialysis filtration. The filtered pure water in each group of electrodialysis components is collected through the second opening 22 and flows downward into the second gap channel 132. After passing through the lowest second opening 22, the pure water flows out through the second water inlet 12. After being filtered by the above-mentioned parallel electrodialysis components, the water production and effluent efficiency of the filter element are greatly improved.

[0053] like Figure 4 As shown, when cleaning the filter element, close the second water inlet 12, open and keep the hollow channel 631 of the permeable rotating shaft tube 63 unobstructed, rotate the permeable rotating shaft tube 63 so that the brush 62 on the scraper bar scrapes up the deposits on the surface of the permeable cathode plate 3. The deposits flow with the water through the through hole 632 on the permeable rotating shaft tube 63 and enter the hollow channel 631 to be discharged out of the housing 1 to complete the rinsing of the filter element.

[0054] It should be noted that the material of the permeable anode plate 4 in the above embodiments one and two is conductive graphite, and the material of the permeable cathode plate 3 is stainless steel.

[0055] It should be noted that, in practical applications, those skilled in the art can also alternatively set the cathode terminal 71 and the anode terminal 72 as touch-type contact structures. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be limited to the protection scope of the present invention.

[0056] Continue to refer to, for example Figures 5 to 6 Two scraper rods 61 are provided on the permeable rotating shaft tube 63 opposite to the permeable cathode plate 3 in each group of electrodialysis components. The two scraper rods 61 are arranged with the permeable rotating shaft tube 63 as the center.

[0057] It should be noted that, in practical applications, those skilled in the art can arrange one, three, or more scraper rods 61 opposite to the permeable cathode plate 3 in each electrodialysis assembly. Such flexible adjustment and change of the number of scraper rods 61 does not deviate from the principle and scope of the present invention and should be limited to the protection scope of the present invention. Of course, it is preferable to have multiple scraper rods 61, which are evenly distributed around the circumference of the permeable rotating pipe 63 to achieve rapid removal of deposits on the permeable cathode plate 3.

[0058] like Figure 5 As shown, in a preferred embodiment, the scraper rod 61 has a straight structure, and the scraper rod 61 has an inclined angle with the radial direction of the permeable rotating shaft pipe 63. Figure 6As shown, in another preferred embodiment, the scraper bar 61 is configured as an arc-shaped structure.

[0059] In the two embodiments described above, when the permeable rotating shaft tube 63 rotates and drives the scraper rod 61 to rotate, the rotation direction of the scraper rod 61 is adjusted so that after the brush 62 on the scraper rod 61 scrapes up the deposits on the permeable cathode plate 3, the deposits can move radially along the permeable rotating shaft tube 63 and approach the through hole 632 of the permeable rotating shaft tube 63, so that during flushing, the deposits can be quickly flushed from the through hole 632 into the hollow channel 631 and discharged out of the shell 1.

[0060] It should be noted that, in practical applications, those skilled in the art can also connect the upper end of the permeable rotating shaft tube 63 to a stepper motor to automate the descaling of the filter element.

[0061] Finally, the present invention provides a water purifier that uses the aforementioned electro-deionization filter element. During operation, the water purifier can generate a certain concentration of hydroxyl radicals, active oxygen and other substances to effectively inhibit the growth of microorganisms in the water purifier. At the same time, the entire water purifier has low pipeline pressure and operates without vibration or noise, thus improving the overall quality of the water purifier.

[0062] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. An electrodeionization cartridge, comprising: The application relates to a water purification device, which comprises a shell (1), a first water inlet (11) and a second water inlet (12) arranged on the shell (1), at least one group of electrodialysis assemblies arranged between the first water inlet (11) and the second water inlet (12), and a descaling assembly. The electrodialysis assembly comprises a water-permeable cathode plate (3), a proton exchange membrane (5) and a water-permeable anode plate (4) arranged along a central axis of the shell (1) in sequence. One end of the descaling assembly is attached to a surface of the water-permeable cathode plate (3), and the descaling assembly is rotated to remove deposits accumulated on the surface of the water-permeable cathode plate (3). The descaling assembly comprises a scraping rod (61), a brush (62) fixed to the scraping rod (61) and a water-permeable rotating shaft pipe (63), the water-permeable rotating shaft pipe (63) is arranged on the central axis of the shell (1) and is rotationally connected to the shell (1), the brush (62) is attached to the surface of the water-permeable cathode plate (3), and the water-permeable rotating shaft pipe (63) drives the scraping rod (61) to rotate on the surface of the water-permeable cathode plate (3). The number of the electrodialysis assemblies is multiple, and multiple groups of the electrodialysis assemblies are arranged in sequence along the central axis of the shell (1), and the water-permeable rotating shaft pipe (63) penetrates through the water-permeable cathode plate (3), the proton exchange membrane (5) and the water-permeable anode plate (4) in at least one group of the electrodialysis assemblies. The water-permeable rotating shaft pipe (63) has multiple through holes (632), each of the through holes (632) is arranged opposite to the brush (62) on each group of the scraping rods (61), and the water-permeable rotating shaft pipe (63) has a hollow channel (631), and the deposits scraped by the brush (62) enter the hollow channel (631) through the through holes (632).

2. The electrodeionization cartridge of claim 1, wherein, The electrodialysis assembly further comprises a support shell (2) for fixing the water-permeable cathode plate (3), the water-permeable anode plate (4) and the proton exchange membrane (5).

3. The electrodeionization cartridge of claim 2, wherein, The support shell (2) and the shell (1) have a gap channel, the gap channel comprises a first gap channel (131) and a second gap channel (132), the support shell (2) is provided with a first opening (21) and a second opening (22) on a side wall thereof, the first opening (21) is opposite to the water-permeable cathode plate (3), and the second opening (22) is opposite to the water-permeable anode plate (4), the first water inlet (11) and the first opening (21) are in communication with the first gap channel (131), the second opening (22) is in communication with the second gap channel (132), and the second opening (22) is also in communication with the second water inlet (12).

4. The electrodeionization cartridge of claim 1, wherein, The number of the scraping rods (61) is multiple, and multiple scraping rods (61) are uniformly distributed on the circumference of the water-permeable rotating shaft pipe (63).

5. The electrodeionization cartridge of claim 1, wherein, The scraping rod (61) is a straight line structure with an inclined angle with respect to the radial direction of the water-permeable rotating shaft pipe (63), or the scraping rod (61) is provided in an arc-shaped structure.

6. The electrodeionization cartridge of claim 2, wherein, The water-permeable cathode plate (3) comprises a cathode terminal, the water-permeable anode plate (4) comprises an anode terminal, and the cathode terminal and the anode terminal are electrically connected with a power supply unit through the support shell (2) and the shell (1).

7. A water purifier characterized by comprising: An electrodeionization cartridge comprising the electrodeionization cartridge of any one of claims 1 to 6.

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