Water purification assembly and water purification equipment

Abstract

The utility model relates to the technical field of water purification, and provides a water purification assembly and water purification equipment. The water purification assembly comprises a capacitive deionization filter element, the capacitive deionization filter element comprises a central column and an electrode assembly, the electrode assembly is wound around the peripheral wall of the central column, the two ends, in the axial direction of the central column, of the electrode assembly are sealed, the outer side of the electrode assembly is used for receiving input of raw water, and the inner side of the electrode assembly is used for outputting purified water or waste water; the center column is provided with a water outlet channel, a water passing hole and a water outlet, the water passing hole and the water outlet are communicated with the water outlet channel, the water outlet channel is arranged in the center column, the water outlet is formed in the first end of the center column, and the water passing hole is formed in the peripheral wall close to the second end of the center column. According to the utility model, bubbles generated in the filter element can be effectively discharged in the desalting process of the capacitive deionization filter element, so that the capacitive deionization filter element can be prevented from generating noise in the working process, and the water purification treatment effect of the capacitive deionization filter element is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a water purification component and a water purification device. Background Art

[0002] Capacitive Deionization (CDI) is a water desalination and purification technology based on the theory of electric double layer capacitance. Its basic principle is that after applying a low voltage to the electrodes, cations, anions or charged particles in the solution migrate to the two electrodes respectively under the action of electric field force and concentration gradient, and adsorb on the electrode surface to form an electric double layer, so as to achieve the purpose of desalination or purification. The capacitive deionization technology can achieve different water outlet qualities at different voltages, retain the ions beneficial to the human body, and remove heavy metal ions.

[0003] In the related art, during the desalination work, if the voltage between the electrode plates of the capacitive deionization filter element fluctuates, bubbles will appear in the filter element. The generated bubbles cause the water pressure in the filter element to be unstable, resulting in noise generated by the capacitive deionization filter element during the water purification process and affecting the water purification treatment effect. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the related art. For this purpose, the utility model provides a water purification component, which can effectively discharge the bubbles generated in the filter element during the desalination process of the capacitive deionization filter element, not only prevent the capacitive deionization filter element from generating noise during work, but also ensure the water purification treatment effect of the capacitive deionization filter element.

[0005] The utility model also provides a water purification device.

[0006] The water purification component according to the first aspect embodiment of the utility model includes:

[0007] A capacitive deionization filter element, including a central column and an electrode assembly. The electrode assembly is wound around the peripheral wall of the central column, and both ends of the electrode assembly along the axial direction of the central column are sealed. The outside of the electrode assembly is used for receiving the input of raw water, and the inside of the electrode assembly is used for outputting purified water or wastewater;

[0008] The central column has a water outlet channel, water passing holes and a water outlet port communicated with the water outlet channel. The water outlet channel is arranged inside the central column, the water outlet port is arranged at the first end of the central column, and the water passing holes are arranged on the peripheral wall close to the second end of the central column.

[0009] According to an embodiment of the utility model, a diversion groove is arranged on the peripheral wall of the central column, and a fluid communication is formed between the diversion groove and the water passing holes.

[0010] According to an embodiment of the present utility model, one end of the diversion groove is provided on the circumferential wall near the first end of the central column, and the other end is provided on the circumferential wall near the second end of the central column.

[0011] According to an embodiment of the present utility model, the diversion groove is arranged to extend along the axial direction of the central column.

[0012] According to an embodiment of the present utility model, a plurality of the diversion grooves and a plurality of the water passing holes are provided, the plurality of the diversion grooves and the plurality of the water passing holes are arranged oppositely, and at least a part of the plurality of the water passing holes are arranged along the circumferential direction of the central column.

[0013] According to an embodiment of the present utility model, a plurality of the water passing holes are provided, and the sum of the water passing areas of the plurality of the water passing holes is not less than 20 mm 2 ;

[0014] and / or, the proportion of the axial distance between the water passing hole and the second end of the central column relative to the length of the central column is not greater than 15%.

[0015] According to an embodiment of the present utility model, the electrode assembly includes: an insulating sheet and at least two layers of electrode sheets, the insulating sheet and the electrode sheets are arranged in a laminated manner, and the insulating sheet is clamped between two adjacent layers of the electrode sheets;

[0016] The electrode sheet includes a current collector layer and an adsorption layer, and the adsorption layers are provided on both the front and back sides of the current collector layer; two adjacent layers of the electrode sheets are respectively configured as a positive electrode sheet and a negative electrode sheet, and a water passing channel for accommodating the insulating sheet is formed between the positive electrode sheet and the negative electrode sheet;

[0017] The inner and outer ends of the electrode assembly relative to the central column are respectively formed as a water outlet end and a water inlet end; the water inlet end is communicated with the water outlet end through the water passing channel, and the water outlet end extends to the circumferential wall of the central column and is in fluid communication with the water passing hole.

[0018] According to an embodiment of the present utility model, two adjacent layers of the electrode sheets are arranged oppositely along the stacking direction, and the insulating sheet and the electrode sheets are arranged offset along the stacking direction, so that the electrode sheets are hidden between two adjacent layers of the insulating sheets.

[0019] According to an embodiment of the present utility model, the water purification assembly further includes:

[0020] a housing, having a water inlet port and a water outlet port, and the water inlet port and the water outlet port are located on the same side of the housing;

[0021] The capacitive deionization filter element is disposed within the housing. An outlet space and a receiving space that are isolated from each other are formed between the first end of the capacitive deionization filter element and the inner wall of the housing. The receiving space is located outside the outlet space. A gap is left between the outer side surface of the capacitive deionization filter element and the inner wall of the housing.

[0022] Wherein, the water inlet port is in communication with the gap, and the water outlet, the outlet space, and the water outlet port are in communication in sequence. The positive electrode tab and the negative electrode tab of the capacitive deionization filter element both extend into the receiving space, and the positive electrode tab and the negative electrode tab are spaced apart and adapted to be connected to an external power source.

[0023] According to an embodiment of the present invention, a first partition and a second partition are provided on the inner wall of the housing. The second partition is located outside the first partition. The first partition and the first end of the capacitive deionization filter element enclose to form the outlet space, and the first partition, the second partition, and the first end of the capacitive deionization filter element enclose to form the receiving space.

[0024] According to an embodiment of the present invention, the water purification assembly further includes:

[0025] A first end cap, including a first side wall and a first cover body that are bent and connected. The first side wall is sealingly connected to the inner side surface of the second partition, and the first cover body is sealingly connected to the first end of the capacitive deionization filter element.

[0026] Wherein, the positive electrode tab and the negative electrode tab are located in the area enclosed by the first side wall and the first partition.

[0027] According to an embodiment of the present invention, the first end cap further includes:

[0028] A first glue-blocking wall, which is bent and connected to the first cover body. The first cover body and the first end of the capacitive deionization filter element are sealingly connected through a filling glue, and the first glue-blocking wall is disposed outside the peripheral wall of the capacitive deionization filter element.

[0029] Wherein, a water passing gap is left between the outer side surface of the first glue-blocking wall and the inner wall of the housing, and the water inlet port is in communication with the gap through the water passing gap.

[0030] According to an embodiment of the present invention, the water purification assembly further includes:

[0031] A second end cap, including a second cover body and a second glue-blocking wall that are bent and connected. The second cover body and the second end of the capacitive deionization filter element are sealingly connected through a filling glue, and the second glue-blocking wall is disposed outside the peripheral wall of the capacitive deionization filter element.

[0032] The water purification device according to the second aspect embodiment of the present utility model includes: a machine body and the water purification component as described above; the machine body has an installation cavity, and the water purification component is detachably arranged in the installation cavity.

[0033] One or more of the above technical solutions in the embodiments of the present utility model have at least one of the following technical effects: by arranging the water passing holes on the peripheral wall near the second end of the central column, the water passing holes are set far away from the water outlet. This design can limit the water output from the inner side of the electrode assembly to gradually converge towards the area where the water passing holes are located, and then sequentially output through the water passing holes, the water outlet channel and the water outlet. During the process of water flow, since the water passing holes are set far away from the water outlet, the flowing water will gradually converge towards the area where the water passing holes are located, which will gradually squeeze the bubbles generated in the electrode assembly towards the area where the water passing holes are located, then enter the water outlet channel from the water passing holes, and be discharged together with the water body, thereby effectively removing the bubbles appearing in the capacitive deionization filter element.

[0034] As can be seen from the above, the water purification component shown in the present utility model can effectively discharge the bubbles generated in the capacitive deionization filter element during the desalination process of the capacitive deionization filter element, prevent the capacitive deionization filter element from generating noise during operation, ensure the stability of the internal electric field of the electrode assembly, and thus ensure the water purification treatment effect of the capacitive deionization filter element.

[0035] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1 is one of the structural schematic diagrams of the water purification component provided by the embodiment of the present utility model;

[0038] Figure 2 is the second structural schematic diagram of the water purification component provided by the embodiment of the present utility model;

[0039] Figure 3 is the third structural schematic diagram of the water purification component provided by the embodiment of the present utility model;

[0040] Figure 4 is the structural schematic diagram of the capacitive deionization filter element provided by the embodiment of the present utility model;

[0041] Figure 5 It is one of the schematic structural diagrams of the central column provided by the embodiment of the present utility model;

[0042] Figure 6 It is another schematic structural diagram of the central column provided by the embodiment of the present utility model;

[0043] Figure 7 It is the schematic structural diagram of winding the electrode assembly on the central column provided by the embodiment of the present utility model;

[0044] Figure 8 It is the schematic structural diagram of the first end cover provided by the embodiment of the present utility model;

[0045] Figure 9 It is the schematic structural diagram of the second end cover provided by the embodiment of the present utility model;

[0046] Figure 10 It is the schematic cross-sectional view of the laminated arrangement of the electrode assembly provided by the embodiment of the present utility model;

[0047] Figure 11 It is the schematic cross-sectional view of the electrode sheet provided by the embodiment of the present utility model;

[0048] Reference numerals:

[0049] 1. Housing; 101. Water inlet port; 102. Water outlet port; 111. Water outlet space; 112. Accommodation space; 121. First partition; 122. Second partition;

[0050] 2. Capacitive deionization filter element; 21. Central column; 22. Electrode assembly; 211. Water outlet channel; 212. Water passing hole; 213. Water outlet; 214. Flow guiding groove; 221. Insulating sheet; 222. Electrode sheet; 2201. Water passing channel; 2221. Current collector layer; 2222. Adsorption layer; 201. Positive electrode tab; 202. Negative electrode tab;

[0051] 3. First end cover; 31. First side wall; 32. First cover body; 33. First rubber blocking wall;

[0052] 4. Second end cover; 41. Second cover body; 42. Second rubber blocking wall;

[0053] 5. Power connection assembly; 51. Positive terminal; 52. Negative terminal. Detailed implementation manners

[0054] The following further describes in detail the implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0055] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0056] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0057] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0058] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0059] The following is combined with Figures 1-11, the water purification component and water purification equipment provided by the embodiment of the utility model are described in detail through specific embodiments and their application scenarios.

[0060] In the first aspect, Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the embodiment of the utility model provides a water purification component, including: a capacitive deionizing filter element 2;

[0061] The capacitive deionization filter element 2 includes a central column 21 and an electrode assembly 22. The electrode assembly 22 is wound around the peripheral wall of the central column 21. The electrode assembly 22 is sealed at both ends of the axial direction of the central column 21. The outer side of the electrode assembly 22 is used to receive the input of raw water, and the inner side of the electrode assembly 22 is used to output clean water or waste water.

[0062] The central column 21 has a water outlet channel 211 and a water hole 212 and a water outlet 213 connected to the water outlet channel 211. The water outlet channel 211 is arranged in the central column 21, the water outlet 213 is arranged at the first end of the central column 21, and the water hole 212 is arranged on the peripheral wall close to the second end of the central column 21.

[0063] It is understandable that the electrode assembly 22 generally includes positive and negative electrode sheets that are stacked, the positive and negative electrode sheets are isolated from each other, and a flow channel for water flow is formed between the positive and negative electrode sheets; when the electrode assembly 22 is wound, the inner side surface of one end of the electrode assembly 22 contacts the peripheral wall of the central column 21, and then the electrode assembly 22 is wound layer by layer with the central column 21 as the central axis until the electrode assembly 22 is wound in a columnar distribution.

[0064] Since the electrode assembly 22 is wound around the peripheral wall of the central column 21 and the electrode assembly 22 is sealed at both ends along the axial direction of the central column 21, when a positive voltage is applied to the positive electrode sheet and the negative electrode sheet, the cations, anions or charged particles in the water body will migrate to the surface of the positive electrode sheet and the negative electrode sheet under the action of the electric field force, so that the inner side of the electrode assembly 22 outputs the clean water after desalination treatment; when a reverse voltage is applied to the positive electrode sheet and the negative electrode sheet, or when the voltage is stopped, the anions, cations or charged particles adsorbed on the surface of the positive electrode sheet and the negative electrode sheet will automatically detach, so that the inner side of the electrode assembly 22 outputs wastewater with a higher concentration.

[0065] Considering that the peripheral wall of the existing central column 21 is usually densely provided with a plurality of water passing holes, the water output from the inner side of the electrode assembly 22 will uniformly pass through each water passing hole and enter the water outlet channel. If there are bubbles in the electrode assembly 22, the bubbles may adhere to the surface of the positive electrode plate and / or the negative electrode plate, and the flowing water body will not act on the desorption of the bubbles. However, in the present application, by arranging the water passing holes 212 on the peripheral wall near the second end of the central column 21, the water passing holes 212 are arranged away from the water outlet 213. This design can limit the water output from the inner side of the electrode assembly 22 to gradually converge towards the area where the water passing holes 212 are located, and then sequentially pass through the water passing holes 212, the water outlet channel 211 and the water outlet 213 for output. During the flow of the water body, since the water passing holes 212 are arranged away from the water outlet 213, the flowing water body will gradually converge towards the area where the water passing holes 212 are located, which will gradually squeeze the bubbles generated in the electrode assembly 22 towards the area where the water passing holes 212 are located, then enter the water outlet channel 211 from the water passing holes 212, and be discharged together with the water body, thereby effectively removing the bubbles appearing in the capacitive deionization filter element 2.

[0066] As can be seen from the above, the water purification assembly shown in the present utility model can effectively discharge the bubbles generated in the filter element during the desalination process of the capacitive deionization filter element 2, prevent the capacitive deionization filter element 2 from generating noise during operation, ensure the stability of the internal electric field of the electrode assembly 22, and thus also ensure the water purification treatment effect of the capacitive deionization filter element 2.

[0067] It should be noted here that, as Figure 4 shown, the capacitive deionization filter element 2 further includes a protective sleeve. For example, the protective sleeve is a cylindrical rubber film, and the protective sleeve is sleeved on the peripheral wall of the electrode assembly 22. A plurality of water passing ports are formed on the protective sleeve to ensure that the water body can reach the outside of the electrode assembly 22 through the water passing ports, and then the electrode assembly 22 performs desalination treatment on the received water body.

[0068] In some embodiments, as Figure 2 、 Figure 5 and Figure 6 shown, a diversion groove 214 is provided on the peripheral wall of the central column 21, and a fluid communication is formed between the diversion groove 214 and the water passing holes 212.

[0069] It can be understood that by providing the diversion groove 214 on the peripheral wall of the central column 21, it is possible to avoid the gap between the inner side of the electrode assembly 22 and the peripheral wall of the central column 21 from being too small to cause water flow restriction, so as to facilitate collecting the purified water output from the inner side of the electrode assembly 22 by means of the diversion groove 214 and then diverting the collected purified water to the water passing holes 212.

[0070] Among them, the depth of the diversion groove 214 can be set to 2 - 5 mm.

[0071] In some embodiments, asFigure 5 As shown, since the length of the central column 21 is substantially the same as the axial length of the electrode assembly 22 along the central axis, one end of the diversion groove 214 is provided on the peripheral wall near the first end of the central column 21, and the other end is provided on the peripheral wall near the second end of the central column 21. The purification water output from the inside of the electrode assembly 22 can be effectively collected at various positions along the axial direction of the central column 21 by using the diversion groove 214, ensuring the diversion effect on the purification water.

[0072] Among them, the diversion groove 214 can be configured to be provided on the peripheral wall of the central column 21 along a spiral track or along a straight track, and no specific limitation is made on this.

[0073] In some embodiments, as Figure 5 shown, the diversion groove 214 is configured to extend along the axial direction of the central column 21. This design can effectively reduce the diversion path of the purification water and is also convenient for processing the diversion groove 214.

[0074] At the same time, since the inner and outer ends of the electrode assembly 22 relative to the central column 21 are correspondingly formed as the water outlet end and the water inlet end, and the electrode assembly 22 is configured to be wound around the peripheral wall of the central column 21, the water outlet end of the electrode assembly 22 extends along the axial direction of the central column 21. By setting the diversion groove 214 to extend along the axial direction of the central column 21, it is convenient to relatively arrange the diversion groove 214 with the water outlet end of the electrode assembly 22, ensuring the diversion effect on the purification water.

[0075] In some embodiments, as Figure 6 shown, in order to enhance the diversion effect on the purification water, a plurality of diversion grooves 214 and water passing holes 212 are provided. The plurality of diversion grooves 214 and the plurality of water passing holes 212 are relatively arranged, and at least part of the plurality of water passing holes 212 are arranged along the circumferential direction of the central column 21.

[0076] Optionally, each diversion groove 214 can be configured to form a fluid communication with a plurality of water passing holes 212 arranged along the axial direction of the central column 21, and each diversion groove 214 extends along the axial direction of the central column 21.

[0077] Optionally, the plurality of diversion grooves 214 and the plurality of water passing holes 212 are arranged in a one-to-one correspondence. The plurality of water passing holes 212 are arranged along the circumferential direction of the central column 21, and the plurality of diversion grooves 214 are also arranged along the circumferential direction of the central column 21. Each diversion groove 214 extends along the axial direction of the central column 21.

[0078] In some embodiments, a plurality of water passing holes 212 are provided, and the sum of the water passing areas of the plurality of water passing holes 212 is not less than 20 mm 2 , for example, the sum of the water passing areas of the plurality of water passing holes is 20 mm 2 , 25 mm2 , 35 mm 2 and 50 mm 2 etc. This design avoids a large flow resistance when the water body passes through the water passing holes 212, preventing the water passing holes 212 from restricting the flow of the water body.

[0079] In some embodiments, in order to ensure the exhaust effect of the capacitive deionization filter element 2, the ratio of the axial distance between the water passing holes 212 and the second end of the central column 21 to the length of the central column 21 is not greater than 15%.

[0080] Optionally, the length of the capacitive deionization filter element 2 is approximately 333 - 350 mm. The axial distance between the water passing holes 212 and the second end of the central column 21 can be set to be less than 50 mm, so that the water passing holes 212 are as far away from the water outlet 213 of the capacitive deionization filter element 2 as possible, thereby ensuring the exhaust effect.

[0081] In some embodiments, as Figure 7 , Figure 10 and Figure 11 shown, the electrode assembly 22 includes: an insulating sheet 221 and at least two layers of electrode sheets 222. The insulating sheet 221 and the electrode sheets 222 are arranged in a laminated manner, and the insulating sheet 221 is sandwiched between two adjacent layers of electrode sheets 222;

[0082] The electrode sheet 222 includes a current collector layer 2221 and an adsorption layer 2222. The adsorption layers 2222 are provided on both the front and back sides of the current collector layer 2221; two adjacent layers of electrode sheets 222 are respectively configured as a positive electrode sheet and a negative electrode sheet, and a water passing channel 2201 for accommodating the insulating sheet 221 is formed between the positive electrode sheet and the negative electrode sheet;

[0083] The inner and outer ends of the electrode assembly 22 with respect to the central column 21 are correspondingly formed as a water outlet end and a water inlet end; the water inlet end is communicated with the water outlet end through the water passing channel 2201, and the water outlet end extends towards the peripheral wall of the central column 21 and forms a fluid communication with the water passing holes 212.

[0084] It can be understood that the insulating sheet 221 and the electrode sheets 222 are stacked in an alternating arrangement to achieve that the insulating sheet 221 is sandwiched between two adjacent layers of electrode sheets 222. Since two adjacent layers of electrode sheets 222 are respectively configured as a positive electrode sheet and a negative electrode sheet, when the number of electrode sheets 222 is greater than two layers, in order to meet the water filtration requirements of the electrode assembly 22 for raw water, when designing the power supply for the electrode assembly 22, the positive electrode sheet and the negative electrode sheet can be arranged alternately in the stacking direction in sequence, the insulating sheet 221 is sandwiched between the positive electrode sheet and the negative electrode sheet, and the current collector layer 2221 of the positive electrode sheet is electrically connected to the positive electrode of the power supply, and the current collector layer 2221 of the negative electrode sheet is electrically connected to the negative electrode of the power supply. When the number of electrode sheets 222 is equal to two layers, the insulating sheet 221 can be directly sandwiched between the positive electrode sheet and the negative electrode sheet.

[0085] For the electrode sheet 222, the current collector layer 2221 of the electrode sheet 222 can be made of metal or graphite material so that the current collector layer 2221 is formed as a conductive layer. The adsorption layer 2222 of the electrode sheet 222 can be made of activated carbon and other adsorption materials to adsorb ions in raw water.

[0086] Meanwhile, the insulating sheet 221 can be made of plastic material. The insulating sheet 221 is used to play a supporting role between the positive electrode sheet and the negative electrode sheet, not only preventing the short - circuit connection between the positive electrode sheet and the negative electrode sheet, but also ensuring the formation of a water - passing channel 2201 between the positive electrode sheet and the negative electrode sheet.

[0087] In practical applications, the operation of the capacitive deionization filter element 2 includes an adsorption purification process and a desorption regeneration process. When adjacent two - layer electrode sheets 222 are electrically connected to the positive and negative electrodes of the power supply and the power supply is started to supply power, the anions and cations in raw water are attracted to the electrode sheets 222 with opposite charges and are adsorbed by the adsorption layer 2222 on the electrode sheets 222. This operation process of the capacitive deionization filter element 2 is the adsorption purification process.

[0088] Correspondingly, when the power supply is stopped or a reverse voltage is applied to adjacent two - layer electrode sheets 222, the ions adsorbed by the adsorption layer 2222 are detached into the water body of the water - passing channel 2201. At this time, the water - passing channel 2201 will output concentrated water with a higher ion concentration.

[0089] As can be seen from the above, for the capacitive deionization filter element 2 shown in this embodiment, by arranging the adsorption layer 2222 on the front and back sides of the current collector layer 2221, the integrated design of the electrode sheet 222 is realized. Only by stacking the electrode sheet 222 and the insulating sheet 221 in an alternating arrangement can the electrode assembly 22 be formed. This stacked arrangement design of the electrode assembly 22 simplifies the arrangement structure of the electrode assembly 22, is convenient for processing and production, and is beneficial to reducing production costs.

[0090] Meanwhile, in practical applications, only by electrically connecting adjacent two - layer electrode sheets 222 to the positive and negative electrodes of the power supply, the ions in the raw water passing through the water - passing channel 2201 can be adsorbed, achieving the purpose of purifying the raw water. Since the adsorption layer 2222 is provided on both sides of the current collector layer 2221 of each electrode sheet 222, both sides of each electrode sheet 222 can adsorb ions, thus ensuring the purification effect of the raw water to a certain extent. The capacitive deionization filter element 2 can effectively remove heavy metal ions in water and retain the beneficial ions required by the human body, meeting the needs of household water purification.

[0091] In some embodiments, to ensure the purification effect of the raw water, two adjacent electrode sheets 222 are arranged opposite to each other along the stacking direction, so as to ensure the coverage range of the electric field between two adjacent electrode sheets 222 as much as possible, and then remove anions, cations and other charged particles in the raw water based on the electric field between two adjacent electrode sheets 222.

[0092] Furthermore, by arranging the insulating sheet 221 and the electrode sheet 222 in a staggered manner along the stacking direction, the electrode sheet 222 is hidden between two adjacent insulating sheets 221. This design not only ensures the electrical isolation between two adjacent electrode sheets 222, but also facilitates setting the water outlet end of the electrode assembly 22 at a position opposite to the water passing holes 212 and / or the diversion grooves 214 on the peripheral wall of the central column 21, so as to ensure that the water passing channel 2201 in the electrode assembly 22 is in fluid communication with the water outlet channel 211 in the central column 21. Wherein, the stacking direction is along the thickness direction of the insulating sheet 221 or the electrode sheet 222.

[0093] In some embodiments, as Figure 2 、 Figure 4 and Figure 7 shown, to facilitate connecting two adjacent electrode sheets 222 to the positive and negative electrodes of the power supply, the electrode assembly 22 further includes: a positive electrode tab 201 and a negative electrode tab 202; the positive electrode tab 201 is electrically connected to the current collector layer 2221 of the positive electrode sheet; the negative electrode tab 202 is electrically connected to the current collector layer 2221 of the negative electrode sheet.

[0094] Specifically, a first extension portion is provided on one side edge of the current collector layer 2221 of each positive electrode sheet, and a second extension portion is provided on one side edge of the current collector layer 2221 of each negative electrode sheet; when the electrode assembly 22 is wound around the peripheral wall of the central column 21, the first extension portions of the positive electrode sheets are stacked to form the positive electrode tab 201, and the second extension portions of the negative electrode sheets are stacked to form the negative electrode tab 202.

[0095] In some embodiments, the current collector layer 2221 includes any one of copper foil, titanium foil and graphite paper, and the current collector layer 2221 is configured to be electrically connected to the positive or negative electrode of the power supply.

[0096] The adsorption layer 2222 is attached to the surface of the current collector layer 2221, and the adsorption layer 2222 includes an activated carbon layer, and the activated carbon layer has excellent adsorption performance and can adsorb ions in the raw water.

[0097] In some embodiments, since the thickness of the current collector layer 2221 of the electrode sheet 222 determines the support strength, winding difficulty, and cost of the electrode sheet 222, if the current collector layer 2221 is too thin, the current collector layer 2221 is easily damaged, and if the current collector layer 2221 is too thick, the cost of the electrode sheet 222 is too high. Therefore, the thickness of the current collector layer 2221 is set to 15 - 50 microns; optionally, the thickness of the current collector layer 2221 is specifically 25 microns, 30 microns, 35 microns, 40 microns, 45 microns, 50 microns, etc.

[0098] Meanwhile, since the thickness of the adsorption layer 2222 of the electrode sheet 222 determines the adsorption capacity and adsorption speed, however, if the adsorption layer 2222 is too thick, the adsorption layer 2222 will crack during winding. Therefore, the thickness of the adsorption layer 2222 is set to 25 - 200 microns; optionally, the thickness of the adsorption layer 2222 is specifically 25 microns, 30 microns, 50 microns, 65 microns, 100 microns, 150 microns, 185 microns, 200 microns, etc.

[0099] In some embodiments, the insulating sheet 221 can be configured as a porous structure. For example, the insulating sheet 221 includes insulating woven fabric or insulating grid. The insulating woven fabric can be woven fabric or melt-blown fabric.

[0100] Thus, although the insulating sheet 221 is disposed in the water passage 2201, since the insulating sheet 221 is a porous structure, the insulating sheet 221 does not affect the migration of ions between two adjacent electrode sheets 222, and thus does not affect the adsorption of ions in the water body by the adsorption layer 2222 of the electrode sheet 222. The insulating sheet 221 can ensure the uniform flow of water in the water passage 2201 and can, to a certain extent, ensure the adsorption effect of the adsorption layer 2222 on ions.

[0101] In some embodiments, considering that the greater the thickness of the insulating sheet 221, the smaller the water flow pressure loss and the lower the blockage risk. However, the greater the thickness of the insulating sheet 221, the greater the distance between two adjacent electrode sheets 222, and thus the greater the resistance between two adjacent electrode sheets 222, resulting in poorer water purification performance. Therefore, in order to comprehensively consider the pressure loss and water purification effect, the thickness of the insulating sheet 221 is set to 0.1 - 1.0 mm; optionally, the thickness of the insulating sheet 221 is specifically set to 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, etc.

[0102] In some embodiments, as Figure 1 、 Figure 2 and Figure 3 shown, the water purification assembly further includes: a housing 1; the housing 1 has a water inlet port 101 and a water outlet port 102, and the water inlet port 101 and the water outlet port 102 are located on the same side of the housing 1;

[0103] The capacitive deionization filter element 2 is disposed inside the housing 1. An outlet space 111 and a receiving space 112 which are isolated from each other are formed between the first end of the capacitive deionization filter element 2 and the inner wall of the housing 1. The receiving space 112 is located outside the outlet space 111; a gap is left between the outer side surface of the capacitive deionization filter element 2 and the inner wall of the housing 1.

[0104] Wherein, the water inlet port 101 is communicated with the gap, and the water outlet 213, the outlet space 111 and the water outlet port 102 are communicated in sequence; both the positive electrode tab 201 and the negative electrode tab 202 of the capacitive deionization filter element 2 extend into the receiving space 112, and the positive electrode tab 201 and the negative electrode tab 202 are arranged at intervals and are adapted to be connected to an external power supply.

[0105] It can be understood that the housing 1 is columnar, and an accommodation cavity is provided inside the housing 1. The capacitive deionization filter element 2 is installed in the accommodation cavity and is configured to be coaxially arranged with the housing 1. The water inlet port 101 and the water outlet port 102 are respectively located at the first end of the housing 1 and are communicated with the accommodation cavity.

[0106] An outlet space 111 and a receiving space 112 which are isolated from each other are formed between the first end of the capacitive deionization filter element 2 and the inner wall of the first end of the housing 1, and the second end of the capacitive deionization filter element 2 abuts against the inner wall of the second end of the housing 1. Since the positive electrode tab 201 and the negative electrode tab 202 of the capacitive deionization filter element 2 are disposed in the receiving space 112, and the water outlet 213 of the capacitive deionization filter element 2 is disposed in the outlet space 111, this design realizes the electrical and water isolation of the water purification assembly based on the mutually isolated outlet space 111 and receiving space 112, ensuring the reliability of the water purification work of the water purification assembly.

[0107] A power connection assembly 5 can be arranged in the receiving space 112. The power connection assembly 5 includes a positive terminal 51 and a negative terminal 52. At least part of the positive terminal 51 and at least part of the negative terminal 52 are exposed outside the housing 1. The positive terminal 51 is electrically connected to the positive electrode tab 201 of the electrode assembly 22, and the negative terminal 52 is electrically connected to the negative electrode tab 202 of the electrode assembly 22. This design facilitates the external power supply to apply voltage to the positive electrode plate and the negative electrode plate through the power connection assembly 5.

[0108] In some embodiments, as Figure 2 and Figure 3 shown, a first partition plate 121 and a second partition plate 122 are arranged on the inner wall of the housing 1. The second partition plate 122 is located outside the first partition plate 121. The first partition plate 121 and the first end of the capacitive deionization filter element 2 enclose an outlet space 111, and the first partition plate 121, the second partition plate 122 and the first end of the capacitive deionization filter element 2 enclose a receiving space 112.

[0109] It is understandable that the first partition 121 and the second partition 122 are respectively arranged on the inner wall of the first end of the housing 1, the water outlet port 102 is arranged at the center of the first end of the housing 1, and the first partition 121 and the second partition 122 respectively extend circumferentially relative to the water outlet port 102 in a ring shape. Since the second partition 122 is located outside the first partition 121, the accommodation space 112 is located outside the water outlet space 111.

[0110] In practical applications, only by abutting the first end of the capacitive deionization filter element 2 against the inner wall of the first end of the housing 1, the water outlet space 111 and the accommodation space 112 can be formed between the first end of the capacitive deionization filter element 2 and the first end of the housing 1 based on the first partition 121 and the second partition 122.

[0111] In some embodiments, as Figure 2 、 Figure 3 and Figure 8 shown, the water purification assembly further includes: a first end cap 3;

[0112] The first end cap 3 includes a first side wall 31 and a first cover body 32 which are bent and connected. The first side wall 31 is hermetically connected to the inner side surface of the second partition 122, and the first cover body 32 is hermetically connected to the first end of the capacitive deionization filter element 2; wherein, the positive electrode tab 201 and the negative electrode tab 202 are located in the area enclosed by the first side wall 31 and the first partition 121.

[0113] It is understandable that the first cover body 32 is in a disc shape, the first cover body 32 is provided with a central hole, the central hole is coaxially arranged with the water outlet port 102, the first side wall 31 extends circumferentially relative to the central hole, and the positive electrode tab 201, the negative electrode tab 202 and the water outlet 213 of the capacitive deionization filter element 2 pass through the central hole.

[0114] When the first end of the capacitive deionization filter element 2 abuts against the inner wall of the first end of the housing 1, the outer side surface of the first side wall 31 is hermetically connected to the inner side surface of the second partition 122, and a closed accommodation space 112 is formed between the first side wall 31, the first partition 121 and the first end of the capacitive deionization filter element 2, and the waterproof isolation of the positive electrode tab 201 and the negative electrode tab 202 can be realized based on the accommodation space 112.

[0115] At the same time, the peripheral wall of the water outlet 213 (for example, the peripheral wall of the first end of the central column 21) and the inner side surface of the first partition 121 can also be configured to be hermetically connected. This design can ensure that the water body output from the water outlet 213 directly discharges from the water outlet port 102 after entering the water outlet space 111, and the water body in the water outlet space 111 will not flow into the accommodation space 112.

[0116] In some embodiments, as Figure 2 、 Figure 3 and Figure 8As shown in the figure, the first end cap 3 further includes: a first glue-blocking wall 33, which is bent and connected to the first cover body 32. The first cover body 32 and the first end of the capacitive deionization filter element 2 are hermetically connected by filling glue. The first glue-blocking wall 33 is arranged on the outer side of the peripheral wall of the capacitive deionization filter element 2. For example, the inner side surface of the first glue-blocking wall 33 is attached to the peripheral wall of the capacitive deionization filter element 2. Of course, the inner side surface of the first glue-blocking wall 33 and the peripheral wall of the capacitive deionization filter element 2 can also be arranged at intervals.

[0117] Wherein, there is a water passing gap between the outer side surface of the first glue-blocking wall 33 and the inner wall of the housing 1, and the water inlet port 101 is communicated with the above-mentioned gap through the water passing gap.

[0118] It can be understood that the filling glue can be epoxy resin glue, and the filling glue forms a sealing glue layer at the first end of the capacitive deionization filter element 2. The first glue-blocking wall 33 is arranged on the outer edge along the first cover body 32 and extends circumferentially relative to the central hole. The inner diameter of the first glue-blocking wall 33 is adapted to the diameter of the capacitive deionization filter element 2.

[0119] Protrusions can be arranged on the outer side surface of the first glue-blocking wall 33, and the protrusions are abutted against the inner wall of the housing 1 so that a water passing gap is formed between the outer side surface of the first glue-blocking wall 33 and the inner wall of the housing 1.

[0120] In practical applications, first, a layer of filling glue is arranged in the first area at the first end of the capacitive deionization filter element 2. The first area is arranged axially opposite to the first cover body 32 along the central column 21. Then, the first end cap 3 is covered on the first end of the capacitive deionization filter element 2. Since the first glue-blocking wall 33 is attached to the peripheral wall of the capacitive deionization filter element 2 and the first glue-blocking wall 33 extends circumferentially relative to the water outlet port 102, the first glue-blocking wall 33 can not only prevent the filling glue from overflowing to the side of the capacitive deionization filter element 2, but also limit the capacitive deionization filter element 2 in the radial direction to ensure the coaxiality of the capacitive deionization filter element 2 and the water outlet port 102. Then, a layer of filling glue is arranged in the second area at the first end of the capacitive deionization filter element 2. The second area corresponds to the area where the central hole is located on the first cover body 32, so as to complete the sealing of the first end of the capacitive deionization filter element 2.

[0121] Optionally, in order to ensure the sealing effect of the first end of the capacitive deionization filter element 2, a first support rib is arranged on the side surface of the first cover body 32 facing the capacitive deionization filter element 2. The first support rib can be configured to extend radially along the central column 21. The first support rib is used to ensure the thickness of the filling glue filled at the first end of the capacitive deionization filter element 2 and is beneficial to ensuring the molding quality of the filling glue.

[0122] Optionally, to ensure the molding quality of the filling glue, a stop rib is further provided on the side of the first cover body 32 facing the capacitive deionization filter element 2. The stop rib is arranged along the inner edge of the first cover body 32 and extends circumferentially relative to the central hole. The stop rib is used to limit the flow of the filling glue towards the area where the central hole is located.

[0123] In some embodiments, such as Figure 2 , Figure 3 and Figure 9 shown, the water purification assembly further includes: a second end cover 4;

[0124] The second end cover 4 includes a second cover body 41 and a second glue stop wall 42 which are bent and connected. The second cover body 41 and the second end of the capacitive deionization filter element 2 are hermetically connected through the filling glue. The second glue stop wall 42 is arranged on the outer side of the peripheral wall of the capacitive deionization filter element 2. For example, the inner side surface of the second glue stop wall 42 is in contact with the peripheral wall of the capacitive deionization filter element 2. Of course, the inner side surface of the second glue stop wall 42 and the peripheral wall of the capacitive deionization filter element 2 can also be configured to be spaced apart.

[0125] It can be understood that the second cover body 41 is in a disc shape. The filling glue forms a sealing glue layer at the second end of the capacitive deionization filter element 2, and the second cover body 41 is in contact with the surface of the sealing glue layer to achieve the sealing of the second end of the capacitive deionization filter element 2.

[0126] The second glue stop wall 42 is arranged along the outer edge of the second cover body 41 and extends circumferentially relative to the center of the second cover body 41. The inner diameter of the second glue stop wall 42 is adapted to the diameter of the capacitive deionization filter element 2. The second glue stop wall 42 is used to prevent the filling glue from overflowing to the peripheral wall of the capacitive deionization filter element 2.

[0127] Furthermore, a first positioning portion is provided at the center of the second cover body 41, and the second glue stop wall 42 extends circumferentially relative to the first positioning portion.

[0128] A second positioning portion is provided at the center of the second end of the capacitive deionization filter element 2, and the first positioning portion and the second positioning portion are connected; the second glue stop wall 42 is sleeved on the peripheral wall of the capacitive deionization filter element 2. Among them, the first positioning portion includes a positioning protrusion, and the second positioning portion includes a positioning groove, and the positioning protrusion is inserted into the positioning groove.

[0129] A second support rib can also be provided on the side of the second cover body 41 facing the capacitive deionization filter element 2. The second support rib can be configured to extend radially along the central column 21. The second support rib is used to ensure the thickness of the filling glue filled at the second end of the capacitive deionization filter element 2 and is beneficial to ensuring the molding quality of the filling glue.

[0130] In a second aspect, an embodiment of the present invention further provides a water purification device, including: a machine body and the water purification assembly as described above; the machine body has an installation cavity, and the water purification assembly is detachably arranged in the installation cavity.

[0131] Specifically, the water purification device can be an instant hot water dispenser. An installation opening communicating with the installation cavity can be provided on the machine body, and the capacitive deionization filter element 2 can be inserted into the installation cavity through the installation opening.

[0132] Since the water purification device includes a water purification component, and the specific structure of the water purification component refers to the above-mentioned embodiments, the water purification device of this embodiment includes all the technical solutions of the above-mentioned embodiments. Therefore, it has at least all the beneficial effects obtained by all the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should all be covered by the scope of the claims of the present invention.

Claims

1. A water purification component, characterized in that, Comprising: A capacitive deionization filter element (2), including a central column (21) and an electrode assembly (22). The electrode assembly (22) is wound around the peripheral wall of the central column (21). Both ends of the electrode assembly (22) along the axial direction of the central column (21) are sealed. The outside of the electrode assembly (22) is for receiving the input of raw water, and the inside of the electrode assembly (22) is for outputting purified water or wastewater. The central column (21) has a water outlet channel (211), water passing holes (212) communicating with the water outlet channel (211), and a water outlet (213). The water outlet channel (211) is arranged inside the central column (21). The water outlet (213) is arranged at the first end of the central column (21). The water passing holes (212) are arranged on the peripheral wall near the second end of the central column (21).

2. The water purification component according to claim 1, wherein, A diversion groove (214) is arranged on the peripheral wall of the central column (21), and a fluid communication is formed between the diversion groove (214) and the water passing holes (212).

3. The water purification component according to claim 2, characterized in that, One end of the diversion groove (214) is arranged on the peripheral wall near the first end of the central column (21), and the other end is arranged on the peripheral wall near the second end of the central column (21).

4. The water purification component according to claim 3, wherein The diversion groove (214) extends along the axial direction of the central column (21).

5. The water purification component according to claim 2, characterized in that, Both the diversion groove (214) and the water passing holes (212) are provided with a plurality of them. The plurality of diversion grooves (214) and the plurality of water passing holes (212) are arranged oppositely. At least part of the plurality of water passing holes (212) are arranged circumferentially along the central column (21).

6. The water purification component according to claim 1, characterized in that, The water passing holes (212) are provided with a plurality of them, and the sum of the water passing areas of the plurality of water passing holes (212) is not less than 20 mm 2 ; And / or, the proportion of the axial distance between the water passing holes (212) and the second end of the central column (21) to the length of the central column (21) is not greater than 15%.

7. The water purification component according to any one of claims 1 to 6, characterized in that, The electrode assembly (22) includes: an insulating sheet (221) and at least two layers of electrode sheets (222). The insulating sheet (221) and the electrode sheets (222) are arranged in a laminated manner, and the insulating sheet (221) is sandwiched between two adjacent layers of the electrode sheets (222). The electrode sheet (222) includes a current collector layer (2221) and an adsorption layer (2222). The adsorption layer (2222) is provided on both the front and back sides of the current collector layer (2221). Two adjacent layers of the electrode sheets (222) are respectively configured as a positive electrode sheet and a negative electrode sheet, and a water passing channel (2201) for accommodating the insulating sheet (221) is formed between the positive electrode sheet and the negative electrode sheet. The inner and outer ends of the electrode assembly (22) relative to the central column (21) are correspondingly formed as a water outlet end and a water inlet end. The water inlet end is communicated with the water outlet end through the water passing channel (2201). The water outlet end extends towards the peripheral wall of the central column (21) and forms a fluid communication with the water passing holes (212).

8. The water purification component according to claim 7, wherein, Two adjacent layers of the electrode sheets (222) are arranged oppositely in the stacking direction, and the insulating sheet (221) and the electrode sheets (222) are arranged in a staggered manner in the stacking direction, so that the electrode sheets (222) are hidden between two adjacent layers of the insulating sheets (221).

9. The water purification component according to claim 7, characterized in that, The water purification component further includes: a housing (1) having a water inlet port (101) and a water outlet port (102), and the water inlet port (101) and the water outlet port (102) are located on the same side of the housing (1); The capacitive deionization filter element (2) is disposed in the housing (1). A mutually isolated water outlet space (111) and a receiving space (112) are formed between the first end of the capacitive deionization filter element (2) and the inner wall of the housing (1), and the receiving space (112) is located outside the water outlet space (111); a gap is left between the outer side surface of the capacitive deionization filter element (2) and the inner wall of the housing (1); Wherein, the water inlet port (101) is communicated with the gap, and the water outlet (213), the water outlet space (111) and the water outlet port (102) are communicated in sequence; the positive electrode lug (201) and the negative electrode lug (202) of the capacitive deionization filter element (2) both extend into the receiving space (112), and the positive electrode lug (201) and the negative electrode lug (202) are arranged at intervals and are adapted to be connected to an external power supply.

10. The water purification component according to claim 9, characterized in that, A first partition plate (121) and a second partition plate (122) are provided on the inner wall of the housing (1). The second partition plate (122) is located outside the first partition plate (121). The first partition plate (121) and the first end of the capacitive deionization filter element (2) enclose the water outlet space (111), and the first partition plate (121), the second partition plate (122) and the first end of the capacitive deionization filter element (2) enclose the receiving space (112).

11. The water purification component according to claim 10, characterized in that, The water purification component further includes: a first end cover (3), including a first side wall (31) and a first cover body (32) which are bent and connected. The first side wall (31) is hermetically connected to the inner side surface of the second partition plate (122), and the first cover body (32) is hermetically connected to the first end of the capacitive deionization filter element (2); Wherein, the positive electrode lug (201) and the negative electrode lug (202) are located in the area enclosed by the first side wall (31) and the first partition plate (121).

12. The water purification component according to claim 11, wherein The first end cover (3) further includes: a first rubber blocking wall (33) which is bent and connected to the first cover body (32); the first cover body (32) and the first end of the capacitive deionization filter element (2) are hermetically connected by a filling rubber, and the first rubber blocking wall (33) is disposed outside the peripheral wall of the capacitive deionization filter element (2); Wherein, a water passing gap is left between the outer side surface of the first rubber blocking wall (33) and the inner wall of the housing (1), and the water inlet port (101) is communicated with the gap through the water passing gap.

13. The water purification component according to claim 9, characterized in that, The water purification component further includes: a second end cover (4), including a second cover body (41) and a second rubber blocking wall (42) which are bent and connected. The second cover body (41) and the second end of the capacitive deionization filter element (2) are hermetically connected by a filling rubber, and the second rubber blocking wall (42) is disposed outside the peripheral wall of the capacitive deionization filter element (2).

14. A water purification device, characterized in that, Including: A body and a water purification component as described in any one of claims 1 to 13; the body has an installation cavity, and the water purification component is detachably arranged in the installation cavity.

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