Water purification system

Abstract

The utility model relates to the technical field of water purification, and provides a water purification system which comprises a front filter element and a water purification path, the front filter element is used for filtering and removing impurities from a water body; the water purification path comprises a capacitive deionization filter element and a proportional valve which are sequentially arranged along the water flow direction; the water inlet ends of the plurality of water purification paths are respectively communicated with the water outlet end of the front filter element, and the water outlet ends of the plurality of water purification paths are communicated with one another. According to the water purification system disclosed by the utility model, impurities in a water body can be removed by utilizing the physical filtering function of the front filter element, and the water body is desalted based on the capacitive deionization filter element of each water purification waterway, so that the water outlet flow of different water purification waterways can be adjusted according to actual requirements, and different water outlet qualities meeting the requirements can be output to users.

Description

Technical Field

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

[0002] In household water use, the current mainstream solutions for filtering out charged ions in water include ultrafiltration, nanofiltration, and reverse osmosis. Among them, reverse osmosis technology has become the market's first choice due to its excellent filtration effect (99%). However, the same problem it brings is that with the improvement of people's awareness of drinking water and their concern for drinking water health, the water output from reverse osmosis is too pure and does not retain mineral ions that are beneficial to the human body, making it impossible to output different water quality that meets user needs. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention proposes a water purification system that utilizes the physical filtration function of a pre-filter to remove impurities from the water. Furthermore, the system proportionally mixes the purified water output from the capacitor deionization filters in different water purification circuits according to actual needs, ensuring that purified water of different output qualities is delivered to the user, thereby meeting the user's healthy drinking water needs.

[0004] According to the first embodiment of the present invention, the water purification system includes:

[0005] Pre-filter element, used to filter and remove impurities from water;

[0006] The water purification circuit includes a capacitor deionization filter element and a proportional valve arranged in sequence along the water flow direction;

[0007] There are multiple purified water channels, the water inlet ends of the multiple purified water channels are respectively connected to the water outlet ends of the pre-filter element, and the water outlet ends of the multiple purified water channels are connected to each other.

[0008] According to one embodiment of the present invention, the water purification system further comprises:

[0009] A first TDS sensor is provided at the outlet side of the capacitor deionization filter element of each of the water purification water channels, and the first TDS sensor is used to collect the TDS value of the output water body of the capacitor deionization filter element;

[0010] The control module is electrically connected to each of the first TDS sensors and each of the proportional valves.

[0011] According to one embodiment of the present invention, the water purification system further comprises:

[0012] A second TDS sensor is used to collect the TDS value of the water received by the pre-filter;

[0013] The control module is electrically connected to the second TDS sensor and the capacitor deionization filter element respectively.

[0014] According to one embodiment of the present invention, the capacitive deionization filter element includes a filter element body, and the filter element body includes a water outlet pipe and an electrode assembly;

[0015] The first end of the water outlet pipe is formed with a water outlet, the second end of the water outlet pipe is closed, and the peripheral wall of the water outlet pipe is provided with a first water hole;

[0016] The electrode assembly is wound around the peripheral wall of the water outlet pipe, and the electrode assembly is sealed at both ends along the axial direction of the water outlet pipe. The outer side of the electrode assembly is used to receive the input of raw water, and the inner side of the electrode assembly is used to output clean water or waste water.

[0017] According to one embodiment of the present invention, the electrode assembly includes an insulating sheet and at least two layers of electrode sheets, the insulating sheet and the electrode sheets are stacked, and the insulating sheet is sandwiched between two adjacent layers of the electrode sheets; the electrode sheet includes a current collector layer and an adsorption layer, and the adsorption layer is provided on both the front and back sides of the current collector layer; the two adjacent layers of the electrode sheets are respectively configured as a positive electrode sheet and a negative electrode sheet, and a water passage for accommodating the insulating sheet is formed between the positive electrode sheet and the negative electrode sheet;

[0018] The inner and outer ends of the electrode assembly relative to the water outlet pipe are correspondingly formed as a water outlet end and a water inlet end; the water inlet end is connected to the water outlet end through the water passage, and the water outlet end extends to the peripheral wall of the water outlet pipe and forms a fluid connection with the first water hole.

[0019] According to one embodiment of the present invention, a guide pipe is provided inside the water outlet pipe, and a water gap is formed between the guide pipe and the water outlet pipe; a peripheral wall of a first end of the guide pipe is sealedly connected to an inner wall of the water outlet pipe, and a second water hole is formed between a second end of the guide pipe and a second end of the water outlet pipe;

[0020] The first water passage hole, the water passage gap, the second water passage hole, the inner cavity of the flow guide pipe and the water outlet are fluidically connected in sequence.

[0021] According to one embodiment of the present invention, the capacitive deionization filter element further comprises: a housing having an accommodating cavity and a water inlet port and a water outlet port communicating with the accommodating cavity;

[0022] The filter element body is arranged in the accommodating cavity, and a gap is left between the peripheral wall of the filter element body and the inner wall of the accommodating cavity. Fluid communication is formed between the water inlet port and the gap, and fluid communication is formed between the water outlet and the water outlet port.

[0023] According to one embodiment of the present invention, the pre-filter element includes any one of a PP cotton filter element, a carbon rod filter element or a carbon fiber filter element;

[0024] Alternatively, the pre-filter element includes multiple layers of filter elements, which are sequentially integrated from the inside to the outside, and each layer of the filter element includes any one of a PP cotton filter element, a carbon rod filter element or a carbon fiber filter element.

[0025] According to one embodiment of the present invention, the water purification system further comprises:

[0026] The sterilizing element is arranged at the rear side of the water outlet of the water purification channel along the water flow direction, and is used for sterilizing the water outputted from the water purification channel.

[0027] According to one embodiment of the present invention, the water purification system further comprises:

[0028] A temperature regulating component is provided at the rear side of the water outlet of the water purification channel along the water flow direction, and is used to regulate the temperature of the water outputted from the water purification channel;

[0029] Wherein, the temperature adjustment component includes a heating element and / or a cooling element.

[0030] The above-mentioned one or more technical solutions in the embodiments of the present utility model have at least one of the following technical effects: by setting multiple clean water channels on the water outlet side of the pre-filter, each clean water channel is equipped with a capacitor deionization filter element and a proportional valve arranged in sequence along the water flow direction; in actual application, the physical filtering function of the pre-filter element can be used to filter the received raw water to remove impurities in the water body, and then the water body is desalinated based on the capacitor deionization filter element of each clean water channel. According to actual needs, the proportional valve on each clean water channel can be used to adjust the outlet flow of the capacitor deionization filter element in the corresponding water channel to achieve the adjustment of the outlet flow of different clean water channels, thereby controlling the water quality of the output water body of the entire water purification system, and ensuring that different outlet water qualities that meet the needs are output to users.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 It is a structural diagram of a water purification system provided by an embodiment of the present utility model;

[0034] Figure 2 This is one of the structural diagrams of the water purification assembly provided by the embodiment of the present utility model;

[0035] Figure 3 This is the second structural diagram of the water purification component provided by the embodiment of the utility model;

[0036] Figure 4 This is the third structural diagram of the water purification assembly provided by the embodiment of the present utility model;

[0037] Figure 5 This is a schematic structural diagram of the filter element body provided by an embodiment of the present utility model;

[0038] Figure 6 This is one of the structural diagrams of the assembly of the water outlet pipe and the diversion pipe provided in the embodiment of the utility model;

[0039] Figure 7 This is the second structural diagram of the assembly of the water outlet pipe and the diversion pipe provided by the embodiment of the present utility model;

[0040] Figure 8 The embodiment of the present utility model provides Figure 7 A partial enlarged schematic diagram of the middle K section;

[0041] Figure 9 This is a schematic diagram of the structure of winding the electrode assembly around the water outlet pipe provided by an embodiment of the utility model;

[0042] Figure 10 This is a schematic structural diagram of a first end cover provided by an embodiment of the present utility model;

[0043] Figure 11 This is a schematic structural diagram of the second end cover provided by an embodiment of the present utility model;

[0044] Figure 12 It is a cross-sectional schematic diagram of the stacked arrangement of the electrode assembly provided by an embodiment of the present utility model;

[0045] Figure 13 This is a schematic cross-sectional view of an electrode sheet provided by an embodiment of the present utility model;

[0046] Reference numerals:

[0047] 1. Capacitor deionization filter element; 2. Pre-filter element; 3. Sterilizer; 4. Thermostatic component; 41. Heating element; 42. Refrigeration element; 5. First TDS sensor; 6. Second TDS sensor; 100. Proportional valve; 200. Pressure regulating valve; 300. First on / off valve; 400. Second on / off valve;

[0048] 11. Shell; 1101. Water inlet port; 1102. Water outlet port; 1111. Water outlet space; 1112. Accommodation space; 1121. Partition;

[0049] 12. Filter element body; 121. Water outlet pipe; 122. Electrode assembly; 123. Flow guide tube; 1211. First water hole; 1212. Water outlet; 1201. Water gap; 1202. Second water hole; 1230. Sealing member; 12301. Sealing plate; 12302. Protrusion; 1221. Insulating sheet; 1222. Electrode sheet; 12201. Water channel; 12221. Current collector layer; 12222. Adsorption layer; 2001. Positive electrode tab; 2002. Negative electrode tab;

[0050] 13. First end cover; 131. First side wall; 132. First cover body; 133. First rubber retaining wall;

[0051] 14. Second end cover; 141. Second cover body; 142. Second adhesive retaining wall;

[0052] 15. Electrical connection assembly; 151. Positive terminal; 152. Negative terminal. DETAILED DESCRIPTION

[0053] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0054] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0055] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0056] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0058] The following combination Figures 1-13 , the water purification system provided by the embodiment of the utility model is described in detail through specific embodiments and application scenarios.

[0059] like Figure 1 As shown, the embodiment of the present invention provides a water purification system, comprising: a pre-filter element 2 and a water purification waterway; the pre-filter element 2 is used to filter and remove impurities from the water body;

[0060] The clean water circuit includes a capacitor deionization filter element 1 and a proportional valve 100 arranged in sequence along the water flow direction; there are multiple clean water circuits, and the water inlet ends of the multiple clean water circuits are respectively connected to the water outlet ends of the pre-filter element 2, and the water outlet ends of the multiple clean water circuits are connected to each other.

[0061] It is understood that the pre-filter element 2 is used to filter and remove impurities from the input raw water. Depending on the material selected for the pre-filter element 2, the pre-filter element 2 includes any one of a PP cotton filter element, a carbon rod filter element, or a carbon fiber filter element. Alternatively, the pre-filter element 2 includes multiple layers of filter elements, which are sequentially integrated from the inside out, and each layer of filter element includes any one of a PP cotton filter element, a carbon rod filter element, or a carbon fiber filter element; wherein the types of filter elements in two adjacent layers are different; for example, when the pre-filter element 2 is a two-layer filter element, the filter element in the outer layer can be a PP cotton filter element, and the filter element in the outer layer can be a carbon rod filter element or a carbon fiber filter element.

[0062] The number of purified water channels is greater than or equal to two, and the capacitor deionization filter element 1 has a water inlet port 1101 and a water outlet port 1102 for outputting purified water or wastewater; specifically, the capacitor deionization filter element 1 includes an electrode assembly 122 wound in a cylindrical shape, and the electrode assembly 122 generally includes a stacked positive electrode sheet and a negative electrode sheet, the positive electrode sheet and the negative electrode sheet are isolated from each other, and a flow channel for the flow of water is formed between the positive electrode sheet and the negative electrode sheet. When a positive voltage is applied to the positive electrode and the negative electrode, the capacitor deionization filter element 1 is in a water purification state. At this time, the cations, anions or charged particles in the water body will migrate to the surface of the positive electrode and the negative electrode under the action of the electric field force, so that the water outlet port 1102 of the capacitor deionization filter element 1 outputs the purified water after desalination treatment; when a reverse voltage is applied to the positive electrode and the negative electrode, the capacitor deionization filter element 1 is in a regeneration state. At this time, the anions, cations or charged particles adsorbed on the surface of the positive electrode and the negative electrode will automatically detach, so that the water outlet port 1102 of the capacitor deionization filter element 1 outputs wastewater with a higher concentration.

[0063] The proportional valve 100 may be an electromagnetic proportional valve 100 , and a controlled end of the proportional valve 100 may be configured to be electrically connected to a control module, so that the opening of the proportional valve 100 is controlled by the control module.

[0064] In actual applications, the water quality output by the water purification system can be different by controlling the capacitor deionization filter element 1 in part of the multiple water purification waterways to work and the capacitor deionization filter element 1 in another part of the water purification waterways not to work; the voltage applied to the capacitor deionization filter element 1 in each water purification waterway can be controlled to be different, and then based on the opening adjustment of the proportional valve 100 in each water purification waterway, the water quality output by the water purification system can be different; it is also possible to control the voltage applied to the capacitor deionization filter element 1 in each water purification waterway to be the same, but control the opening of the proportional valve 100 in each water purification waterway to be different, to achieve different water quality output by the water purification system.

[0065] In some application scenarios, if there are two clean water circuits, in order to facilitate the adjustment of the water quality of the outlet water, the opening of the proportional valve 100 in one clean water circuit can be set to a first fixed value, and the opening of the proportional valve 100 in the other clean water circuit only needs to be adjusted as needed, so that the water quality output by the water purification system can be different.

[0066] In some application scenarios, if there are two clean water circuits, in order to facilitate the adjustment of the water quality of the outlet water, the TDS value of the water output by the capacitor deionization filter element 1 in one of the clean water circuits can be controlled to be a second fixed value, for example, the second fixed value is 20-30ppm, and the TDS value of the water output by the capacitor deionization filter element 1 in the other clean water circuit is not finely controlled (the TDS value is usually higher than the second fixed value). By controlling the opening of the proportional valve 100 in the two clean water circuits, the water quality output by the water purification system can be ensured.

[0067] As can be seen from the above, by setting up multiple clean water channels on the water outlet side of the pre-filter 2, each clean water channel is equipped with a capacitor deionization filter element 1 and a proportional valve 100 arranged in sequence along the water flow direction; in actual applications, the physical filtering function of the pre-filter element 2 can be used to filter the received raw water to remove impurities in the water body, and then the water body is desalinated based on the capacitor deionization filter element 1 of each clean water channel. According to actual needs, the proportional valve 100 on each clean water channel can be used to adjust the outlet flow of the capacitor deionization filter element 1 in the corresponding water channel to achieve the adjustment of the outlet flow of different clean water channels, thereby controlling the water quality of the output water body of the entire water purification system, and ensuring that different outlet water qualities that meet the needs are output to users.

[0068] In some embodiments, as Figure 1 As shown, the water purification system also includes: a first TDS sensor 5 and a control module; the first TDS sensor 5 is arranged on the water outlet side of the capacitor deionization filter 1 of each water purification water channel, and the first TDS sensor 5 is used to collect the TDS value of the output water body of the capacitor deionization filter 1; the control module is electrically connected to each first TDS sensor 5 and each proportional valve 100 respectively.

[0069] It is understandable that TDS is the abbreviation of Total Dissolved Solids. The TDS value refers to the concentration of total dissolved substances in water, in milligrams per liter (mg / L), which mainly reflects the Ca 2+ Mg 2+ 、Na + , K + Plasma concentration.

[0070] In practical applications, the opening of the corresponding proportional valve 100 in each water purification channel can be adjusted according to the TDS value of the water output from each water purification channel, thereby adjusting the water flow rate of each water purification channel. Since the water outlets of each water purification channel are interconnected and the cross-sectional area of ​​the water supply pipeline of each water purification channel is generally consistent, the TDS value of the mixed water output from each water purification channel can be controlled simply by adjusting the opening of each proportional valve 100, thereby achieving water quality with different ion content.

[0071] In some embodiments, as Figure 1 As shown, the water purification system further includes: a second TDS sensor 6; the second TDS sensor 6 is used to collect the TDS value of the water received by the pre-filter 2; and the control module is electrically connected to the second TDS sensor 6 and the capacitor deionization filter 1 respectively.

[0072] It is understandable that when the second TDS sensor 6 detects that the TDS value of the raw water is greater than the first preset value, for example, the first preset value is 10-100 ppm, the control module can control one or more of the multiple capacitor deionization filter elements 1 to operate in the water purification state and desalinate the water output by the pre-filter element 2.

[0073] Optionally, when each capacitor deionization filter element 1 is operating in a regeneration state, the control module may determine whether each capacitor deionization filter element 1 has completed regeneration based on the difference between the TDS value detected by the second TDS sensor 6 and the TDS value of the water body output by each capacitor deionization filter element 1. For example, when the difference between the TDS value detected by the second TDS sensor 6 and the TDS value of the water body output by the capacitor deionization filter element 1 is zero, it can be determined that the capacitor deionization filter element 1 has completed regeneration. At this time, the control module may control the capacitor deionization filter element 1 to stop supplying power, or control the capacitor deionization filter element 1 to operate in a water purification state.

[0074] In some embodiments, as Figure 1 As shown, in order to control the water outlet status of each clean water channel, each clean water channel is equipped with a second switch valve 400. The second switch valve 400 can be a two-way valve. The second switch valve 400 is arranged on the front side of the capacitor deionization filter element 1 along the water flow direction.

[0075] In some embodiments, as Figure 1 As shown, in order to control the water output of the entire water purification system, the water purification system is also provided with a first switch valve 300. The first switch valve 300 can be a one-position two-way valve. The first switch valve 300 is arranged on the front side of the pre-filter 2 along the water flow direction.

[0076] In some embodiments, as Figure 1 As shown, in order to ensure the stability of the entire water purification system, the water purification system is further provided with a pressure stabilizing valve 200, which is arranged on the front side of the pre-filter element 2 along the water flow direction.

[0077] The pre-filter element 2 is configured to receive a tap water system, and the pressure-stabilizing valve 200 is used to perform pressure-stabilizing control on the raw water supplied from the tap water system to the pre-filter element 2 .

[0078] In some embodiments, as Figure 2 、 Figure 5 、 Figure 7 、 Figure 12 and Figure 13 As shown, the capacitive deionization filter element 1 includes a filter element body 12 , and the filter element body 12 includes a water outlet pipe 121 and an electrode assembly 122 ;

[0079] A water outlet 1212 is formed at the first end of the water outlet pipe 121, and the second end of the water outlet pipe 121 is closed. A first water hole 1211 is formed on the peripheral wall of the water outlet pipe 121;

[0080] The electrode assembly 122 is wound around the peripheral wall of the water outlet pipe 121. The electrode assembly 122 is sealed at both ends along the axial direction of the water outlet pipe 121. The outer side of the electrode assembly 122 is used to receive the input of raw water, and the inner side of the electrode assembly 122 is used to output clean water or wastewater.

[0081] The electrode assembly 122 includes an insulating sheet 1221 and at least two layers of electrode sheets 1222. The insulating sheet 1221 and the electrode sheets 1222 are stacked, with the insulating sheet 1221 sandwiched between two adjacent layers of electrode sheets 1222. The electrode sheets 1222 include a current collector layer 12221 and an adsorption layer 12222. The adsorption layer 12222 is provided on both the front and back surfaces of the current collector layer 12221. The two adjacent layers of electrode sheets 1222 are respectively configured as a positive electrode sheet and a negative electrode sheet. A water passage 12201 is formed between the positive and negative electrode sheets to accommodate the insulating sheet 1221.

[0082] The inner and outer ends of the electrode assembly 122 relative to the water outlet pipe 121 are correspondingly formed as a water outlet end and a water inlet end; the water inlet end is connected to the water outlet end through the water channel 12201, and the water outlet end extends to the peripheral wall of the water outlet pipe 121 and forms a fluid connection with the first water hole 1211.

[0083] It is understandable that if Figure 9 As shown, when the electrode assembly 122 is wound, the inner side surface of one end of the electrode assembly 122 contacts the peripheral wall of the water outlet pipe 121, and then the electrode assembly 122 is wound layer by layer with the water outlet pipe 121 as the central axis until the electrode assembly 122 is wound in a columnar distribution form.

[0084] The insulating sheets 1221 and electrode sheets 1222 are stacked in an alternating arrangement, such that the insulating sheet 1221 is sandwiched between two adjacent layers of electrode sheets 1222. Since the two adjacent layers of electrode sheets 1222 are configured as positive and negative electrodes, respectively, when there are more than two layers of electrode sheets 1222, to meet the raw water filtration requirements of the electrode assembly 122, when the electrode assembly 122 is powered, the positive and negative electrodes can be arranged alternately in the stacking direction, with the insulating sheet 1221 sandwiched between the positive and negative electrodes. Furthermore, the current collector layer 12221 of the positive electrode sheet is electrically connected to the positive electrode of the power source, and the current collector layer 12221 of the negative electrode sheet is electrically connected to the negative electrode of the power source. When there are two layers of electrode sheets 1222, the insulating sheet 1221 can be directly sandwiched between the positive and negative electrodes.

[0085] For the electrode sheet 1222, the current collector layer 12221 of the electrode sheet 1222 can be made of metal or graphite material, so that the current collector layer 12221 forms a conductive layer, and the adsorption layer 12222 of the electrode sheet 1222 can be made of activated carbon and other adsorption materials to achieve adsorption of ions in the raw water.

[0086] At the same time, the insulating sheet 1221 can be made of plastic material. The insulating sheet 1221 is used to play a supporting role between the positive electrode sheet and the negative electrode sheet, not only preventing the positive electrode sheet and the negative electrode sheet from short-circuiting, but also ensuring that a water channel 12201 is formed between the positive electrode sheet and the negative electrode sheet.

[0087] In practice, the operation of the capacitive deionization filter element 1 includes an adsorption purification process and a desorption regeneration process. When two adjacent electrode sheets 1222 are electrically connected to the positive and negative poles of a power supply and the power supply is turned on, the anions and cations in the raw water are attracted to the oppositely charged electrode sheet 1222 and adsorbed by the adsorption layer 12222 on the electrode sheet 1222. This operation of the capacitive deionization filter element 1 is the adsorption purification process.

[0088] Accordingly, when the power supply is stopped or a reverse voltage is applied to two adjacent electrode sheets 1222, the ions adsorbed by the adsorption layer 12222 are released into the water body of the water channel 12201. At this time, the water channel 12201 will output concentrated water with a higher ion concentration.

[0089] As can be seen from the above, the capacitive deionization filter element 1 shown in this embodiment realizes the integrated design of the electrode sheet 1222 by setting the adsorption layer 12222 on the front and back sides of the current collector layer 12221. It is only necessary to stack the electrode sheet 1222 and the insulating sheet 1221 in an alternating arrangement to form the electrode assembly 122; this stacking arrangement design of the electrode assembly 122 simplifies the arrangement structure of the electrode assembly 122, facilitates processing and production, and helps to reduce production costs.

[0090] At the same time, in actual applications, simply electrically connecting two adjacent layers of electrode sheets 1222 to the positive and negative poles of a power source can adsorb ions in the raw water passing through water passage 12201, achieving the purpose of raw water purification. Because adsorption layers 12222 are provided on both sides of the current collector layer 12221 of each electrode sheet 1222, both sides of each electrode sheet 1222 can adsorb ions, thereby ensuring a certain degree of raw water purification. Capacitive deionization filter element 1 can effectively remove heavy metal ions from water, retaining beneficial ions required by the human body, and meeting the needs of household water purification.

[0091] In some embodiments, in order to ensure the purification effect of raw water, two adjacent layers of electrode sheets 1222 are arranged relative to each other along the stacking direction to ensure the coverage range of the electric field between the two adjacent layers of electrode sheets 1222 as much as possible, and then remove anions, cations and other charged particles in the raw water based on the electric field between the two adjacent layers of electrode sheets 1222.

[0092] Furthermore, if Figure 12 As shown, by staggering the insulating sheets 1221 and the electrode sheets 1222 along the stacking direction, the electrode sheets 1222 are hidden between two adjacent layers of insulating sheets 1221. This design ensures electrical isolation between two adjacent layers of electrode sheets 1222 while also facilitating positioning the water outlet end of the electrode assembly 122 at a position opposite to the first water hole 1211 on the peripheral wall of the water outlet pipe 121, thereby ensuring fluid flow between the water passage 12201 in the electrode assembly 122 and the water gap 1201 inside the water outlet pipe 121.

[0093] Among them, such as Figure 12 As shown, the stacking direction is along the thickness direction of the insulating sheet 1221 or the electrode sheet 1222 .

[0094] In some embodiments, as Figure 6 and Figure 7 As shown, the peripheral wall of the water outlet pipe 121 is provided with a plurality of groups of first water holes 1211 along the circumferential direction, and each group of first water holes 1211 is arranged along the axial direction of the water outlet pipe 121;

[0095] The number of electrode sheets 1222 is greater than two layers, so that the electrode assembly 122 forms multiple water channels 12201; the inner end of the electrode assembly 122 forms multiple water outlet ends corresponding to the multiple water channels 12201, and the multiple water outlet ends are arranged opposite to the multiple groups of first water holes 1211.

[0096] It is understandable that by setting the number of electrode sheets 1222 to be greater than two layers, multiple water channels 12201 can be formed based on the electrode assembly 122, and the raw water flowing in multiple paths in the capacitor deionization filter element 1 can be purified at the same time, thereby improving the purification efficiency of the raw water.

[0097] At the same time, by setting multiple water outlet ends and multiple groups of first water holes 1211 relative to each other, the smoothness of the water path between each water channel 12201 and the water gap 1201 inside the outlet pipe 121 can be ensured, which is beneficial to ensuring the clean water outlet flow rate of the capacitor deionization filter element 1.

[0098] In actual applications, while ensuring electrical isolation between two adjacent layers of electrode sheets 1222, the insulating sheet 1221 at one end of the electrode assembly 122 close to the water outlet pipe 121 and the end of the electrode sheet 1222 can be staggered in sequence along the extension direction of the electrode sheet 1222 and arranged along the circumference of the water outlet pipe 121.

[0099] In some embodiments, as Figure 4 and Figure 5 As shown, in order to facilitate the connection of two adjacent electrode sheets 1222 to the positive and negative poles of the power supply, the electrode assembly 122 also includes: a positive electrode tab 2001 and a negative electrode tab 2002; the positive electrode tab 2001 is electrically connected to the current collector layer 12221 of the positive electrode sheet; the negative electrode tab 2002 is electrically connected to the current collector layer 12221 of the negative electrode sheet.

[0100] Specifically, a first extension portion is provided on one side of the current collector layer 12221 of each positive electrode sheet, and a second extension portion is provided on one side of the current collector layer 12221 of each negative electrode sheet; when the electrode assembly 122 is wound around the peripheral wall of the central column, the first extension portions of each positive electrode sheet are stacked to form a positive electrode tab 2001, and the second extension portions of each negative electrode sheet are stacked to form a negative electrode tab 2002.

[0101] In some embodiments, the current collector layer 12221 includes any one of copper foil, titanium foil, and graphite paper, and the current collector layer 12221 is configured to be electrically connected to the positive electrode or the negative electrode of the power source.

[0102] The adsorption layer 12222 is attached to the surface of the current collector layer 12221. The adsorption layer 12222 includes an activated carbon layer. The activated carbon layer has excellent adsorption properties and can adsorb ions in the raw water.

[0103] In some embodiments, since the thickness of the current collector layer 12221 of the electrode sheet 1222 determines the supporting strength, winding difficulty and cost of the electrode sheet 1222, if the current collector layer 12221 is too thin, the current collector layer 12221 is easily damaged, and if the current collector layer 12221 is too thick, the cost of the electrode sheet 1222 is too high, the thickness of the current collector layer 12221 is set to 15-50 microns; optionally, the thickness of the current collector layer 12221 is specifically 25 microns, 30 microns, 35 microns, 40 microns, 45 microns, 50 microns, etc.

[0104] At the same time, since the thickness of the adsorption layer 12222 of the electrode sheet 1222 determines the adsorption capacity and the adsorption speed, however, if the adsorption layer 12222 is too thick, the adsorption layer 12222 may crack during winding, so the thickness of the adsorption layer 12222 is set to 25-200 microns; optionally, the thickness of the adsorption layer 12222 is specifically 25 microns, 30 microns, 50 microns, 65 microns, 100 microns, 150 microns, 185 microns, 200 microns, etc.

[0105] In some embodiments, the insulating sheet 1221 may be configured as a porous structure, for example, the insulating sheet 1221 includes an insulating woven fabric or an insulating mesh. The insulating woven fabric may be a woven fabric or a melt-blown fabric.

[0106] In this way, although the insulating sheet 1221 is arranged in the water channel 12201, since the insulating sheet 1221 is a porous structure, the insulating sheet 1221 will not affect the migration of ions between two adjacent electrode sheets 1222, thereby not affecting the adsorption of ions in the water body by the adsorption layer 12222 of the electrode sheet 1222. The insulating sheet 1221 will ensure the uniform flow of water in the water channel 12201, and can ensure the adsorption effect of the adsorption layer 12222 on ions to a certain extent.

[0107] In some embodiments, considering that the greater the thickness of the insulating sheet 1221, the smaller the water flow pressure loss and the lower the blockage risk, however, the greater the thickness of the insulating sheet 1221, the greater the distance between two adjacent electrode sheets 1222, and thus the greater the resistance between two adjacent electrode sheets 1222, resulting in worse water purification performance. Therefore, in order to comprehensively consider the pressure loss and water purification effect, the thickness of the insulating sheet 1221 is set to 0.1-1.0 mm; optionally, the thickness of the insulating sheet 1221 is specifically set to 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, etc.

[0108] In some embodiments, as Figure 3 、 Figure 6 and Figure 7As shown, a guide pipe 123 is provided inside the water outlet pipe 121, and a water gap 1201 is formed between the guide pipe 123 and the water outlet pipe 121; the peripheral wall of the first end of the guide pipe 123 is sealedly connected to the inner wall of the water outlet pipe 121, and a second water hole 1202 is formed between the second end of the guide pipe 123 and the second end of the water outlet pipe 121;

[0109] The first water hole 1211 , the water gap 1201 , the second water hole 1202 , the inner cavity of the flow guide tube 123 and the water outlet 1212 are sequentially fluidically connected.

[0110] It is understandable that, considering that the surrounding wall of the existing water outlet pipe 121 is usually densely covered with multiple water holes, the water output from the inner side of the electrode assembly 122 will evenly pass through each water hole into the water outlet channel. If bubbles appear in the electrode assembly 122, the bubbles may adhere to the surface of the positive electrode sheet and / or the negative electrode sheet, and the flowing water will not have an effect on the desorption of the bubbles. However, the present application provides a guide tube 123 through the water outlet pipe 121, and sets a second water hole 1202 between the second end of the guide tube 123 and the second end of the water outlet pipe 121, so that the second water hole 1202 is set away from the water outlet 1212. This design can limit the water output from the inner side of the electrode assembly 122 to gradually converge toward the area where the second water hole 1202 is located after entering the water gap 1201 from the first water hole 1211, and then enter the second water hole 1202 through the second water hole 1202. The water flows into the guide tube 123 and is finally output from the water outlet 1212 under the guidance of the guide tube 123. During the flow of the water, since the second water hole 1202 is set away from the water outlet 1212, the flowing water gradually converges to the area where the second water hole 1202 is located. This will gradually squeeze the bubbles generated in the electrode assembly 122 to the area where the second water hole 1202 is located, and then be discharged together with the water under the guidance of the guide tube 123, thereby effectively removing the bubbles appearing in the capacitor deionization filter element 1.

[0111] From the above, it can be seen that during the desalination process of the capacitor deionization filter element 1, the bubbles generated in the filter element can be effectively discharged, which can prevent the capacitor deionization filter element 1 from generating noise during operation, ensure the stability of the internal electric field of the electrode assembly 122, and thus also ensure the water purification effect of the capacitor deionization filter element 1.

[0112] It should be pointed out here that the capacitive deionization filter element 1 also includes a protective cover, for example, the protective cover is a cylindrical film, the protective cover is arranged on the peripheral wall of the electrode assembly 122, and a plurality of water outlets are constructed on the protective cover to ensure that the water body can reach the outside of the electrode assembly 122 through the water outlet, and then the electrode assembly 122 desalinates the received water body.

[0113] In some embodiments, as Figure 7 and Figure 8 As shown, a blocking member 1230 is provided in the water outlet pipe 121, and the blocking member 1230 is arranged at a position close to the second end of the water outlet pipe 121; the peripheral wall of the first end of the guide pipe 123 is sealedly connected to the inner wall of the first end of the water outlet pipe 121, and a second water hole 1202 is formed between the second end of the guide pipe 123 and the blocking member 1230.

[0114] It is understandable that the axial distance between the blocking member 1230 and the second end of the water outlet pipe 121 is smaller than the axial distance between the blocking member 1230 and the first end of the water outlet pipe 121 .

[0115] The length of the flow conduit 123 can be configured so that the axial length between the sealing member 1230 and the first end of the outlet pipe 121 is equal. A sealing ring can be used to achieve a sealed connection between the peripheral wall of the first end of the flow conduit 123 and the inner wall of the first end of the outlet pipe 121. The second end of the flow conduit 123 can be configured to abut the sealing member 1230. However, a gap is reserved between the second end of the flow conduit 123 and the sealing member 1230 to form the aforementioned second water passage 1202.

[0116] Furthermore, if Figure 8 As shown, the blocking member 1230 includes: a blocking plate 12301 and a plurality of protrusions 12302; the blocking plate 12301 is connected to the inner wall of the water outlet pipe 121, for example, the periphery of the blocking plate 12301 is connected to the inner wall of the water outlet pipe 121; the plurality of protrusions 12302 are arranged on the side of the blocking plate 12301 facing the water outlet 1212, and the plurality of protrusions 12302 are arranged at intervals along the circumferential direction, and the second end of the guide tube 123 abuts against at least part of the plurality of protrusions 12302, and a second water hole 1202 is formed between two adjacent protrusions 12302.

[0117] It is understandable that since the multiple protrusions 12302 are arranged at intervals along the circumferential direction, there are multiple second water holes 1202, and the multiple second water holes 1202 are limited to be arranged along the circumferential direction, and each second water hole 1202 can achieve fluid communication between the water gap 1201 and the inner cavity of the guide tube 123.

[0118] In some embodiments, in order to ensure the exhaust effect of the capacitor deionization filter element 1, the axial distance between the blocking member 1230 and the second end of the outlet pipe 121 is set to be no more than 15% of the length of the outlet pipe 121.

[0119] It is understandable that since the second water hole 1202 is formed between the second end of the guide tube 123 and the blocking member 1230, the axial length between the second water hole 1202 and the water outlet 1212 accounts for no more than 15% of the length of the water outlet pipe 121.

[0120] Optionally, the length of the capacitor deionization filter element 1 is approximately 333-350 mm, and the axial distance between the sealing member 1230 and the second end of the outlet pipe 121 can be set to be less than 50 mm, so that the second water hole 1202 is as far away from the water outlet 1212 of the capacitor deionization filter element 1 as possible, thereby ensuring the exhaust effect.

[0121] In some embodiments, there are multiple second water holes 1202, and the total water flow area of ​​the multiple second water holes 1202 is not less than 20mm. 2 For example, the total water flow area of ​​the second water holes 1202 is 20 mm 2 , 25 mm 2 , 35 mm 2 and 50mm 2 This design avoids a large flow resistance when the water passes through the second water hole 1202, and prevents the second water hole 1202 from limiting the flow of the water.

[0122] In some embodiments, as Figure 2 、 Figure 3 and Figure 4 As shown, the capacitive deionization filter element 1 further includes: a housing 11 having an accommodating cavity and a water inlet port 1101 and a water outlet port 1102 communicating with the accommodating cavity;

[0123] The filter element body 12 is arranged in the accommodating cavity, and a gap is left between the peripheral wall of the filter element body 12 and the inner wall of the accommodating cavity. Fluid communication is formed between the water inlet port 1101 and the gap, and fluid communication is formed between the water outlet port 1212 and the water outlet port 1102.

[0124] Specifically, the water inlet port 1101 and the water outlet port 1102 are located on the same side of the housing 11; the filter element body 12 is disposed in the housing 11, and an accommodating space 1112 is formed between a first end of the filter element body 12 and the inner wall of the housing 11, and a water outlet space 1111 is formed between a second end of the filter element body 12 and the inner wall of the housing 11. The water outlet space 1111 and the accommodating space 1112 are arranged opposite to each other; a first gap is left between the outer side surface of the filter element body 12 and the inner wall of the housing 11;

[0125] Among them, the water inlet port 1101 is connected to the first gap, and the water outlet 1212, the water outlet space 1111 and the water outlet port 1102 are connected in sequence; the positive pole ear 2001 and the negative pole ear 2002 of the capacitor deionization filter element 1 both extend into the accommodating space 1112, and the positive pole ear 2001 and the negative pole ear 2002 are arranged at intervals and are suitable for connection to an external power supply.

[0126] It is understandable that the housing 11 is cylindrical, the filter element body 12 is installed in the accommodating cavity in the housing 11, and is configured to be coaxial with the housing 11.

[0127] An accommodating space 1112 is formed between the first end of the filter element body 12 and the inner wall of the first end of the shell 11, and a water outlet space 1111 is formed between the second end of the filter element body 12 and the inner wall of the second end of the shell 11; the water inlet port 1101 and the water outlet port 1102 are respectively located at the second end of the shell 11 and are connected to the accommodating cavity.

[0128] Since the positive electrode tab 2001 and the negative electrode tab 2002 of the capacitor deionization filter element 1 are arranged in the accommodating space 1112, and the water outlet 1212 is arranged in the water outlet space 1111, this design is based on the isolated water outlet space 1111 and the accommodating space 1112, which realizes the water and electricity isolation of the capacitor deionization filter element 1 and ensures the reliability of the water purification work of the capacitor deionization filter element 1.

[0129] like Figure 4 and Figure 5 As shown, a power connection assembly 15 can be disposed within the accommodation space 1112. The power connection assembly 15 includes a positive terminal 151 and a negative terminal 152. At least a portion of the positive terminal 151 and at least a portion of the negative terminal 152 are exposed outside the housing 11. The positive terminal 151 is electrically connected to the positive electrode tab 2001 of the electrode assembly 122, and the negative terminal 152 is electrically connected to the negative electrode tab 2002 of the electrode assembly 122. This design facilitates application of voltage from an external power source to the positive and negative electrode sheets via the power connection assembly 15.

[0130] In some embodiments, as Figure 3 、 Figure 4 and Figure 10 As shown, the capacitor deionization filter element 1 further includes: a first end cap 13; the first end cap 13 includes a first side wall 131 and a first cover body 132 connected in a bent manner, the first side wall 131 is connected to the inner wall of the housing 11, the first cover body 132 is connected to the first end of the filter element body 12, and the first cover body 132, the first side wall 131 and the inner wall of the housing 11 enclose a receiving space 1112;

[0131] The electrode assembly 122 further includes a positive electrode tab 2001 connected to the positive electrode sheet and a negative electrode tab 2002 connected to the negative electrode sheet. The first cover 132 is provided with a first through hole for the positive electrode tab 2001 to pass through and a second through hole for the negative electrode tab 2002 to pass through.

[0132] It can be understood that the first cover body 132 is disc-shaped, and the first side wall 131 is extended circumferentially relative to the central axis of the filter element body 12; the first side wall 131 is arranged on the side of the first cover body 132 away from the filter element body 12, and abuts against the inner wall of the first end of the shell 11, so that the first cover body 132, the first side wall 131 and the inner wall of the shell 11 enclose a receiving space 1112.

[0133] In some embodiments, as Figure 3 、 Figure 4 and Figure 10 As shown, the first end cap 13 further includes a first rubber stop wall 133 that is bent and connected to the first cover body 132. The outer side of the first rubber stop wall 133 is sealed with the inner wall of the housing 11. The first cover body 132 and the first end of the filter element body 12 are sealed with a filler rubber. The first rubber stop wall 133 is provided on the outer side of the peripheral wall of the filter element body 12. For example, the inner side of the first rubber stop wall 133 is in contact with the peripheral wall of the filter element body 12. Of course, the inner side of the first rubber stop wall 133 can also be spaced apart from the peripheral wall of the filter element body 12.

[0134] It is understandable that the filling glue forms a sealing glue layer at the first end of the filter element body 12 , and the first cover 132 is in contact with the surface of the sealing glue layer to achieve sealing of the first end of the filter element body 12 .

[0135] The first glue retaining wall 133 is arranged on the outer edge of the first cover body 132 and extends circumferentially relative to the center of the first cover body 132. The inner diameter of the first glue retaining wall 133 is adapted to the diameter of the filter element body 12. The first glue retaining wall 133 is used to prevent the filling glue from overflowing to the peripheral wall of the filter element body 12.

[0136] A first support rib may be provided on a side of the first cover body 132 facing the filter element body 12. The first support rib may be configured to extend radially along the filter element body 12. The first support rib is used to ensure the thickness of the filling glue at the first end of the filter element body 12 and is beneficial to ensuring the molding quality of the filling glue.

[0137] The outer side surface of the first rubber stop wall 133 is sealedly connected to the inner wall of the shell 11 to prevent water from entering the accommodating space 1112 formed by the first cover 132 , the first side wall 131 and the inner wall of the shell 11 .

[0138] In some embodiments, as Figure 3 and Figure 4 As shown, a partition 1121 is provided on the inner wall of the shell 11 , and the partition 1121 and the second end of the filter element body 12 enclose a water outlet space 1111 .

[0139] It is understandable that the partition 1121 is extended circumferentially relative to the water outlet port 1102, and the peripheral wall of the water outlet 1212 of the filter element body 12 is sealed to the inner side surface of the partition 1121, so that the partition 1121 and the second end of the filter element body 12 enclose a water outlet space 1111.

[0140] In some embodiments, as Figure 3 、 Figure 4 and Figure 11As shown, the capacitor deionization filter element 1 further includes: a second end cap 14, the second end cap 14 includes a second cover body 141 and a second rubber blocking wall 142 that are bent and connected, the second cover body 141 is limited between the second end of the filter element body 12 and the side of the partition 1121 away from the inner wall of the housing 11, the second cover body 141 is provided with a through hole, the water outlet 1212 is provided through the through hole and communicates with the water outlet space 1111;

[0141] The second cover body 141 is sealed to the second end of the filter element body 12 by filling glue, and the second glue blocking wall 142 is arranged on the outside of the peripheral wall of the filter element body 12. For example, the inner side surface of the second glue blocking wall 142 is in contact with the peripheral wall of the filter element body 12. Of course, the inner side surface of the second glue blocking wall 142 and the peripheral wall of the filter element body 12 can also be spaced apart. A second gap is left between the outer side surface of the second glue blocking wall 142 and the inner wall of the shell 11, and the water inlet port 1101 is connected to the first gap through the second gap.

[0142] It is understood that the filling glue forms a sealing glue layer at the second end of the filter element body 12. The second glue retaining wall 142 is provided on the outer edge of the second cover 141 and extends circumferentially relative to the water outlet 1212. The inner diameter of the second glue retaining wall 142 is adapted to the diameter of the filter element body 12.

[0143] A plurality of ribs may be provided on the outer side surface of the second rubber stop wall 142, and the plurality of ribs are arranged along the circumference of the second rubber stop wall 142 and abut against the inner wall of the shell 11, so that a second gap is formed between the outer side surface of the second rubber stop wall 142 and the inner wall of the shell 11; of course, a plurality of ribs may also be provided on the inner wall of the shell 11, and the plurality of ribs are arranged along the circumference relative to the axis where the water outlet 1212 is located, and abut against the outer side surface of the second rubber stop wall 142. This design can also form a second gap between the outer side surface of the second rubber stop wall 142 and the inner wall of the shell 11.

[0144] Furthermore, in order to ensure the sealing effect on the second end of the filter element body 12, the second cover body 141 is provided with a second support rib on one side facing the filter element body 12. The second support rib can be configured to extend radially along the filter element body 12. The second support rib is used to ensure the thickness of the filling glue at the second end of the filter element body 12, and is conducive to ensuring the molding quality of the filling glue.

[0145] In some implementations, such as Figure 1 As shown, the water purification system further includes: a sterilization element 3; the sterilization element 3 is arranged at the rear side of the water outlet end of the water purification waterway along the water flow direction, and is used to sterilize the water output from the water purification waterway.

[0146] It is understood that the sterilization element 3 can be configured to be electrically connected to the control module. The sterilization element 3 can be a UV sterilization lamp that sterilizes the purified water output from the purified water path by irradiating it with ultraviolet light. The sterilization element 3 can also include a UV lamp and a titanium dioxide photocatalytic layer. Under ultraviolet light, the titanium dioxide can generate active oxygen, such as hydroxyl radicals, to achieve sterilization.

[0147] In some implementations, such as Figure 1 As shown, the water purification system further includes: a temperature regulating component 4, which is arranged at the rear side of the water outlet end of the water purification waterway along the water flow direction, and is used to regulate the temperature of the water output from the water purification waterway.

[0148] It is understandable that the temperature regulating component 4 is used to regulate the temperature of the mixed water output from each water purification waterway to ensure that the temperature of the water output from the water purification system meets the drinking needs of the user.

[0149] The temperature control component 4 includes a heating element 41 and / or a cooling element 42. In actual applications, at least one of the heating element 41 and the cooling element 42 can be controlled to operate according to actual needs to achieve temperature control of the mixed water output from each purified water channel.

[0150] The heating element 41 may be an electric heating wire, and the cooling element 42 may be a semiconductor cooling sheet.

[0151] In order to facilitate more precise control of the water delivery temperature of the water purification system, the water purification system can also be equipped with a temperature sensor. The temperature sensor is arranged in the water path on the rear side of the temperature control component 4 along the direction of water flow. The temperature sensor and the control module are electrically connected. The control module and the temperature control component 4 are electrically connected. The control module can control the working state of the temperature control component 4 according to the temperature feedback from the temperature sensor to ensure that the water temperature output by the water purification system reaches the target value or the user's set value.

[0152] Finally, it should be noted that the above embodiments are intended only to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions 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 are intended to be encompassed by the claims of the present invention.

Claims

1. A water purification system, characterized in that: include: The pre-filter element (2) is used to filter and remove impurities from the water body; A water purification circuit, comprising a capacitor deionization filter element (1) and a proportional valve (100) arranged in sequence along the water flow direction; There are multiple water purification waterways, the water inlet ends of the multiple water purification waterways are respectively connected to the water outlet ends of the pre-filter element (2), and the water outlet ends of the multiple water purification waterways are connected to each other.

2. The water purification system according to claim 1, characterized in that: Also includes: A first TDS sensor (5) is provided at the water outlet side of the capacitor deionization filter (1) of each of the water purification channels, the first TDS sensor (5) being used to collect the TDS value of the output water of the capacitor deionization filter (1); The control module is electrically connected to each of the first TDS sensors (5) and each of the proportional valves (100).

3. The water purification system according to claim 2, characterized in that: Also includes: A second TDS sensor (6) is used to collect the TDS value of the water received by the pre-filter (2); The control module is electrically connected to the second TDS sensor (6) and the capacitor deionization filter element (1) respectively.

4. The water purification system according to claim 1, characterized in that: The capacitive deionization filter element (1) comprises a filter element body (12), and the filter element body (12) comprises a water outlet pipe (121) and an electrode assembly (122); A water outlet (1212) is formed at the first end of the water outlet pipe (121), the second end of the water outlet pipe (121) is closed, and a first water hole (1211) is provided on the peripheral wall of the water outlet pipe (121); The electrode assembly (122) is wound around the peripheral wall of the water outlet pipe (121), and the electrode assembly (122) is sealed at both ends along the axial direction of the water outlet pipe (121). The outer side of the electrode assembly (122) is used to receive the input of raw water, and the inner side of the electrode assembly (122) is used to output clean water or waste water.

5. The water purification system according to claim 4, characterized in that: The electrode assembly (122) comprises an insulating sheet (1221) and at least two layers of electrode sheets (1222); the insulating sheet (1221) and the electrode sheets (1222) are stacked, and the insulating sheet (1221) is sandwiched between two adjacent layers of the electrode sheets (1222); the electrode sheets (1222) comprise a current collector layer (12221) and an adsorption layer (12222); the adsorption layer (12222) is provided on both the front and back sides of the current collector layer (12221); the two adjacent layers of the electrode sheets (1222) are respectively configured as a positive electrode sheet and a negative electrode sheet, and a water passage (12201) for accommodating the insulating sheet (1221) is formed between the positive electrode sheet and the negative electrode sheet; The inner and outer ends of the electrode assembly (122) relative to the water outlet pipe (121) are formed into a water outlet end and a water inlet end, respectively; the water inlet end is connected to the water outlet end through the water passage (12201), and the water outlet end extends toward the peripheral wall of the water outlet pipe (121) and forms a fluid connection with the first water passage hole (1211).

6. The water purification system according to claim 4, characterized in that: A guide pipe (123) is provided inside the water outlet pipe (121), and a water gap (1201) is formed between the guide pipe (123) and the water outlet pipe (121); the peripheral wall of the first end of the guide pipe (123) is sealedly connected to the inner wall of the water outlet pipe (121), and a second water hole (1202) is formed between the second end of the guide pipe (123) and the second end of the water outlet pipe (121); The first water passage hole (1211), the water passage gap (1201), the second water passage hole (1202), the inner cavity of the flow guide tube (123) and the water outlet (1212) are sequentially fluidically connected.

7. The water purification system according to claim 4, characterized in that: The capacitive deionizing filter element (1) further comprises: a housing (11) having a receiving cavity and a water inlet port (1101) and a water outlet port (1102) in communication with the receiving cavity; The filter element body (12) is arranged in the accommodating cavity, a gap is left between the peripheral wall of the filter element body (12) and the inner wall of the accommodating cavity, a fluid connection is formed between the water inlet port (1101) and the gap, and a fluid connection is formed between the water outlet (1212) and the water outlet port (1102).

8. The water purification system according to any one of claims 1 to 7, characterized in that: The pre-filter element (2) includes any one of a PP cotton filter element, a carbon rod filter element or a carbon fiber filter element; Alternatively, the pre-filter element (2) comprises a plurality of layers of filter elements, the plurality of layers of filter elements being sequentially sleeved together from the inside out, and each layer of the filter element comprises any one of a PP cotton filter element, a carbon rod filter element or a carbon fiber filter element.

9. The water purification system according to any one of claims 1 to 7, characterized in that: Also includes: A sterilizing element (3) is provided at the rear side of the water outlet of the water purification channel along the direction of water flow, and is used to sterilize the water outputted from the water purification channel.

10. The water purification system according to any one of claims 1 to 7, characterized in that: Also includes: A temperature regulating component (4) is provided at the rear side of the water outlet of the water purification channel along the water flow direction, and is used to regulate the temperature of the water output from the water purification channel; Wherein, the temperature adjustment component (4) includes a heating element (41) and / or a cooling element (42).

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