Circulating wastewater treatment device and household water purifier

Abstract

The invention provides a circulating type wastewater treatment device and a household water purifier, the circulating type wastewater treatment device comprises a wastewater pipeline, one end of the wastewater pipeline is suitable for being connected with a wastewater port of the water purifier, and a one-way valve is arranged on the wastewater pipeline; the water mixing tank comprises a tank body, and the tank body is provided with a first water inlet connected with the other end of the wastewater pipeline and used for receiving wastewater flowing out of the wastewater pipeline; the second water inlet is communicated with a tap water pipeline and is used for introducing tap water so as to primarily dilute the wastewater in the box body and form mixed water; the first water outlet is communicated with a water inlet of the water purifier; and a second water outlet; the faucet is communicated with the second water outlet, and the faucet is configured to reduce the TDS value of the mixed water by discharging at least part of the mixed water; wherein the mixed water is continuously diluted by tap water in the tap water pipeline within the interval time of water production.

Description

Technical Field

[0001] The present invention relates to the technical field of water purifier wastewater treatment, and in particular to a circulating wastewater treatment device and a household water purifier. Background Art

[0002] Reverse osmosis water purifier is a highly efficient and safe water purification equipment widely used in household, industrial and other fields. However, during use, reverse osmosis water purifier will produce a large amount of wastewater, which not only wastes precious water resources, but also increases the cost of wastewater treatment.

[0003] In the existing technology, the amount of wastewater discharged from the reverse osmosis water purifier mainly depends on factors such as the flux of its filter membrane, the pore size of the filter membrane, and the recycling method of the wastewater. At present, some reverse osmosis water purifiers use wastewater recovery devices, which can collect and store wastewater and release it when water is needed. However, this wastewater recovery device has defects such as low recovery efficiency and long wastewater storage time. In addition, some reverse osmosis water purifiers use water-saving filter membranes to reduce the amount of wastewater generated. However, the filtering effect of this filter membrane may be affected, and the manufacturing cost will also increase. Therefore, how to reasonably and effectively utilize the wastewater discharged from the reverse osmosis water purifier and improve the efficiency of water resource utilization has become a problem that needs to be solved urgently. Summary of the invention

[0004] In order to solve at least one of the problems of the prior art, an embodiment of the present disclosure provides a circulating wastewater treatment device, which can reduce the discharge of wastewater without affecting the life and effect of the filter membrane, achieve zero wastewater discharge under a wide range of use environments, and improve the efficiency of water resource utilization.

[0005] According to an embodiment of the present disclosure, a circulating wastewater treatment device is provided, comprising: A wastewater pipeline, one end of which is suitable for connecting to the wastewater outlet of the water purifier, and a one-way valve is provided on the wastewater pipeline; The mixing water tank comprises a tank body, and the tank body is provided with: a first water inlet connected to the other end of the wastewater pipeline to receive wastewater flowing out of the wastewater pipeline; a second water inlet, connected to a tap water pipeline, for introducing tap water to preliminarily dilute the wastewater in the box and form mixed water; A first water outlet, connected to a water inlet of the water purifier; and Second water outlet; a faucet, connected to the second water outlet, the faucet being configured to reduce a TDS (Total Dissolved Solids) value of the mixed water by discharging at least a portion of the mixed water; Wherein, during the interval of water production, the mixed water is continuously diluted by the tap water in the tap water pipeline.

[0006] According to some embodiments of the present disclosure, the circulating wastewater treatment device further includes: A TDS sensor is disposed in the mixing tank, and is suitable for obtaining the TDS value of the mixed water in real time, or the TDS sensor is disposed on the pipeline between the first water outlet and the water inlet of the water purifier, and is suitable for obtaining the TDS value of the water flowing into the water purifier in real time; A three-way connector, arranged on the wastewater pipeline, wherein the three-way connector is located upstream of the one-way valve; A waste water pipe, one end of which is connected to the three-way joint and the other end of which is suitable for connecting to a sewer pipe; and The solenoid valve is arranged on the waste water pipe, wherein the solenoid valve is opened in response to the TDS value monitored by the TDS sensor exceeding a preset threshold value so as to discharge the waste water.

[0007] According to some embodiments of the present disclosure, the distance between the second water inlet and the first water outlet is smaller than the distance between the first water inlet and the first water outlet.

[0008] According to some embodiments of the present disclosure, the mixing tank further includes: a partition plate, arranged on the inner side wall of the box body, the partition plate being adapted to form a channel in the box body for the mixed water to flow; Wherein, the first water inlet and the first water outlet are respectively arranged at two ends of the channel.

[0009] According to some embodiments of the present disclosure, there are multiple partitions, and the multiple partitions are staggered and arranged at intervals in the box to divide the space inside the box into multiple S-shaped water channels, wherein the first water inlet and the first water outlet are respectively located at two ends of the S-shaped water channel, and the second water inlet is arranged adjacent to the first water outlet.

[0010] According to some embodiments of the present disclosure, the partition is a spiral plate, which divides the space inside the box into a spiral waterway, wherein the first water inlet and the first water outlet are respectively located at two ends of the spiral waterway, and the second water inlet is arranged adjacent to the first water outlet.

[0011] According to some embodiments of the present disclosure, the circulating wastewater treatment device further includes: a housing for accommodating the mixing tank; and A connecting assembly is arranged on the outer shell, and the connecting assembly is suitable for fixing the outer shell on the housing of the water purifier.

[0012] According to some embodiments of the present disclosure, the housing is a flat or cylindrical box-shaped structure, and the housing is suitable for being attached to the side or bottom surface of the water purifier; or The top surface or the side surface of the housing is recessed inward to form a slot, and the shape of the slot is adapted to the shape of the water purifier so that the water purifier can be stored in the slot; or The outer shell is an L-shaped box, and the outer shell is respectively attached to the side surface and the bottom surface of the water purifier.

[0013] According to some embodiments of the present disclosure, the volume range of the mixing tank includes 5~10L According to another aspect of the invention disclosed herein, there is also provided a household water purifier, comprising: Water purification components, including water inlet and waste outlets; and As the aforementioned circulating wastewater treatment device, the wastewater pipeline of the circulating wastewater treatment device is connected to the wastewater outlet, and the first water outlet of the mixing tank of the circulating wastewater treatment device is connected to the water inlet; Wherein, the mixing water tank is arranged on the side and / or bottom of the water purification component.

[0014] According to a circulating wastewater treatment device provided by the present disclosure, the water quality of wastewater discharged from a reverse osmosis water purifier is similar to that of tap water. A mixing water tank is provided to be connected with a tap water pipe and a wastewater pipe, so that the discharged wastewater and tap water are mixed and diluted in the tank to obtain mixed water. Furthermore, pollutants in the mixed water can also be diffused by the tap water in the tap pipe to achieve a continuous dilution effect. In conjunction with a faucet connected to the second water outlet, the mixed water in the mixing water tank can be manually discharged to quickly reduce the TDS value of the mixed water, thereby ensuring that the diluted mixed water with a low TDS value is supplied to the water purifier, thereby improving the water purification efficiency of the water purifier, extending the service life of the water purifier filter element, and reducing the discharge of wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of a circulating wastewater treatment device according to an exemplary embodiment of the present disclosure; Figure 2 is a perspective view of a circulating wastewater treatment device according to an exemplary embodiment of the present disclosure from another perspective; Figure 3 is a block diagram of the working principle of a circulating wastewater treatment device according to an exemplary embodiment of the present disclosure; Figure 4is a three-dimensional structural cross-sectional view of a mixing water tank body in which a plurality of partitions are arranged at intervals according to an exemplary embodiment of the present disclosure; Figure 5 is a three-dimensional structural cross-sectional view of a mixing tank body of a spiral partition according to an exemplary embodiment of the present disclosure; Figure 6 It is a schematic diagram of various shells of a circulating wastewater treatment device and their connection relationship with a water purifier according to an exemplary embodiment of the present disclosure.

[0016] In the above drawings, the meanings of the reference numerals are as follows: 1. Mixing tank; 11. First water inlet; 12. Second water inlet; 13. First water outlet; 14. Box body; 15. Partition; 16. Second water outlet; 2. Wastewater pipeline; 21. One-way valve; 3. Water pipeline; 4. Water purifier; 41. Wastewater outlet; 42. Water inlet; 43. Purified water outlet; 5. Casing; and 6. Tee connector; 7. Faucet; 8. TDS sensor; 9. Wastewater pipe; 10. Solenoid valve. DETAILED DESCRIPTION

[0017] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0018] However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, the description of the known technology is omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0019] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The term "comprising" used herein indicates the existence of features, steps, operations, but does not exclude the existence or addition of one or more other features.

[0020] In the case of using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.). In the case of using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, or C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0021] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0022] In the relevant technology, compared with commercial water purifiers, household water purifiers have their own unique characteristics. For example, for a family of five, each person drinks about 2L of water per day. In addition to cooking, making tea, etc., the total daily water consumption of the family is about 15~20L (the corresponding amount of wastewater generated is about 15~20L), and the water use time is mostly distributed in three time periods: 7~9 am, 11~13 noon, and 5~9 pm. Among them, water purifiers include pure water pressure tank type and non-pure water pressure tank type. For the former, the water production time is concentrated and the one-time water production volume is large, for example, 3~5 times a day, 3~5L of water each time; for the latter, the water production time is relatively dispersed, and the number of water production times is large, and the water production volume is small each time, for example, 5~10 times a day, 0.2~3L each time.

[0023] Based on the above characteristics of the water purifier, the present application sets a mixing tank between the wastewater outlet and the water inlet of the water purifier, and the mixing tank is connected to the tap water pipe at the same time, so that the wastewater generated by the water purifier is mixed with tap water in the mixing tank for preliminary dilution, and during the interval of water production, the impurities in the mixing tank slowly diffuse into the tap water pipe, wherein the tap water pipe is connected to other household water facilities, such as washing machines, toilets, washbasins, water heaters and showers, etc. Based on this, the tap water in the tap water pipe can be replaced irregularly, so that the impurity content in the tap water pipe, that is, the TDS (Total Dissolved Solids) value remains basically unchanged, that is, the TDS value of the mixed water in the mixing tank is gradually reduced to the same level as the tap water during the interval of water production. The above technical solution realizes the "wastewater-free" water production of the water purifier.

[0024] According to some embodiments of the present disclosure, on the basis of the above-mentioned technical solution, another water outlet is further opened on the mixing tank, and the water outlet is connected to a faucet (which can be an existing faucet or a newly added faucet) to discharge the mixed water in the mixing tank, such as daily life water, washing vegetables, washing dishes, etc., so as to achieve the purpose of quickly diluting the mixed water in the mixing tank, so that the TDS value of the mixed water in the mixing tank drops rapidly, thereby overcoming the defect that the TDS value in the mixing tank for continuous water production rises too quickly and a long water production interval is required for dilution, thereby achieving the purpose of continuous water production.

[0025] In this field, the TDS value of tap water is generally 200~250mg / L, depending on the region and the quality of the local tap water pipeline. Pure water purified by a water purifier has a TDS value range of 0~50mg / L, which is direct drinking water, also commonly referred to as "pure water" in this field.

[0026] Figure 1 is a perspective view of a circulating wastewater treatment device according to an exemplary embodiment of the present disclosure; Figure 2 is a perspective view of a circulating wastewater treatment device according to an exemplary embodiment of the present disclosure from another perspective; Figure 3 It is a block diagram of the working principle of a circulating wastewater treatment device according to an exemplary embodiment of the present disclosure.

[0027] According to an embodiment of the present disclosure, a circulating wastewater treatment device suitable for a water purifier is provided, such as Figures 1 to 3As shown, it includes a wastewater pipeline 2, one end of which is suitable for connecting to the wastewater outlet 41 of the water purifier 4, and a one-way valve 21 is arranged on the wastewater pipeline 2; a mixing water tank 1, including a box body, and the box body is provided with: a first water inlet 11, connected to the other end of the wastewater pipeline 2, for receiving the wastewater flowing out of the wastewater pipeline 2; a second water inlet 12, connected to the tap water pipeline 3, for introducing tap water to preliminarily dilute the wastewater in the box body and form mixed water; a first water outlet 13, connected to the water inlet 42 of the water purifier 4; a second water outlet 16; a faucet 7, connected to the second water outlet 16, and the faucet 7 is configured to reduce the TDS value of the mixed water by discharging at least part of the mixed water; wherein, during the interval of water production, the mixed water is continuously diluted by the tap water in the tap water pipeline.

[0028] According to the above-mentioned setting mode, since the impurity concentration of wastewater (externally manifested as TDS value) is higher than that of tap water, this concentration difference will drive the solute to diffuse from high-concentration wastewater to low-concentration tap water. Therefore, by setting a mixing water tank 1, the wastewater pipeline 2 and the tap water pipeline 3 connected to the wastewater outlet 41 of the water purifier 4 are connected respectively, and a one-way valve 21 is provided on the wastewater pipeline 2 to prevent the wastewater from flowing back. The wastewater discharged from the water purifier is mixed and diffused with the tap water inside the box 14 to obtain preliminarily diluted mixed water. Since the amount of tap water is much higher than the amount of wastewater, the water quality of the obtained mixed water is similar to that of the original tap water, and does not affect the purification effect of the water purifier. Therefore, the obtained mixed water can be supplied to the water purifier through the first water outlet 13 for purification. Furthermore, during the interval of water production by the water purifier 4, the mixed water inside the box 14 will also diffuse with the tap water in the tap water pipeline 3 to obtain continuous dilution. The impurities diffused into the tap water are gradually discharged through the tap water pipeline 3 for use, and the impurity concentration in the waste water is reduced, so that the waste water can be reused.

[0029] In this embodiment, the waste water generated by the water purifier 4 will not be discharged. Only the impurities in the waste water will diffuse into the tap water pipe and be discharged with other water-using equipment. Its essence is to use the water in the tap water pipe to purify the waste water of the water purifier. The purified waste water can enter the water purifier again for secondary / multiple water production.

[0030] In the related art, there are also some types of water purifiers that directly return the generated wastewater to the water purifier for secondary water production. The water inlet of the water purifier is generally connected to the wastewater and tap water through two pipes respectively, or connected to the wastewater and tap water respectively through a three-way pipe.

[0031] There is an essential difference between this type of water purifier in the related art and the water purifier provided in this application, mainly in that the wastewater generated by the water purifier is directly returned to the water purifier after being treated, which will cause the TDS value of the wastewater generated by the water purifier to continue to increase, put a lot of pressure on its filter element, and seriously reduce the service life of the filter element. Furthermore, in order to extend the service life of the filter element, some models will flush the filter element at high speed regularly or after meeting preset conditions to reduce impurities adhering to the filter element, thereby extending the life of the filter element, which invisibly complicates the water purifier and increases the equipment cost.

[0032] In an illustrative embodiment, Figures 1 to 3 As shown, the tap water mixed with the diluted mixed water in the tap water pipe 3 can be used through a non-drinking water tap or water-using equipment, such as a toilet, a shower, etc. The waste water discharged from the water purifier 4 is slowly mixed in the tap water for use.

[0033] In an illustrative embodiment, the circulating wastewater treatment device also includes: a TDS sensor, a three-way joint, a wastewater pipe and a solenoid valve. The TDS sensor is arranged in the mixing water tank, and the TDS sensor is suitable for obtaining the TDS value of the mixed water in real time, or the TDS sensor 8 is arranged on the pipeline between the first water outlet 11 and the water inlet 42 of the water purifier, and the TDS sensor 8 is suitable for obtaining the TDS value of the water flowing into the water purifier in real time. The three-way joint 6 is arranged on the wastewater pipeline 2, and the three-way joint is located upstream of the one-way valve 21. One end of the wastewater pipe 9 is connected to the three-way joint 6, and the other end is suitable for connecting to the sewer pipe. The solenoid valve 10 is arranged on the wastewater pipe 9, wherein it is opened in response to the TDS value monitored by the TDS sensor 8 exceeding the preset threshold value to discharge the wastewater.

[0034] In this embodiment, the TDS sensor monitors the TDS value of the mixed water in the mixing tank 1 or the mixed water transported to the water purifier in real time. When the monitored TDS value exceeds the first preset threshold value (for example, 650mg / L, 700mg / L, 750mg / L or 800mg / L), the solenoid valve 10 is opened, and the wastewater flowing out of the wastewater outlet 41 of the water purifier 4 is discharged into the sewer pipe through the wastewater pipe 9, thereby suppressing the continued increase of the TDS value of the mixed water in the mixing tank 1. When the monitored TDS value is lower than the second preset threshold value (less than the preset threshold value), the solenoid valve 10 is closed, and the wastewater continues to flow into the mixing tank 1.

[0035] In an exemplary embodiment, the distance between the second water inlet 12 and the first water outlet 13 is smaller than the distance between the first water inlet 11 and the first water outlet 13 .

[0036] According to the above-mentioned setting, when two liquids of different concentrations are mixed, due to the existence of concentration gradient, the molecules will diffuse from the high concentration area to the low concentration area, and this process is gradual. Therefore, the TDS value of the mixed water near the tap water inlet (i.e., the second water inlet 12) is lower than the mixed water at the wastewater inlet (i.e., the first water inlet). Therefore, setting the first water outlet 13 closer to the second water inlet 12 can supply mixed water with a lower TDS value to the water purifier 4 for purification, thereby improving the purification effect. At the same time, the discharged wastewater is relatively less, which can achieve the effect of wastewater recycling.

[0037] Figure 4 It is a three-dimensional structural cross-sectional view of a mixing water tank body in which a plurality of partitions are arranged at intervals according to an exemplary embodiment of the present disclosure.

[0038] In an illustrative embodiment, Figure 4 As shown, the mixing tank 1 further comprises a partition 15, which is arranged on the inner wall of the tank body 14, and is suitable for forming a channel for the mixed water to flow in the tank body 14. The first water inlet 11 and the first water outlet 13 are respectively arranged at both ends of the channel.

[0039] In an illustrative embodiment, Figure 4 As shown, there are multiple partitions 15, and the multiple partitions 15 are staggered and arranged at intervals in the box body 14 to divide the space in the box body 14 into multiple S-shaped water channels, wherein the first water inlet 11 and the first water outlet 13 are respectively located at the two ends of the above-mentioned S-shaped water channels, and the second water inlet 12 is arranged adjacent to the first water outlet 13.

[0040] According to the above-mentioned setting method, multiple partitions are arranged in a staggered manner, which reduces the contact area between wastewater and tap water, slows down the diffusion rate of wastewater to tap water, and makes the TDS value of mixed water near the first water outlet 13 lower. The S-shaped waterway formed increases the distance between the first water inlet 11 and the first water outlet 13 located at both ends of the S-shaped waterway, which can slow down the diffusion rate of wastewater to tap water, and further reduce the TDS value of mixed water near the first water outlet 13. Avoid affecting the water purification effect of the water purifier 4 and ensure the quality of the purified water. And reduce the TDS value of the tap water diffused in the tap water pipeline 3 to ensure that it does not affect the use of other water outlets.

[0041] Figure 5 4 is a cross-sectional view of a three-dimensional structure of a mixing tank body having a spiral partition according to an exemplary embodiment of the present disclosure.

[0042] In an alternative exemplary embodiment, as Figure 5As shown, the partition 15 is a spiral plate, which divides the space inside the box 14 into a spiral waterway, wherein the first water inlet 11 and the first water outlet 13 are respectively located at the two ends of the above-mentioned spiral waterway, and the second water inlet 12 is arranged adjacent to the first water outlet 13.

[0043] In an illustrative embodiment, the circulating wastewater treatment device further includes a water quality sensor 6, which is suitable for detecting the water quality inside the circulating wastewater treatment device.

[0044] Figure 6 It is a schematic diagram of various shells of a circulating wastewater treatment device and their connection relationship with a water purifier according to an exemplary embodiment of the present disclosure.

[0045] In an illustrative embodiment, Figure 6 As shown, the circulating wastewater treatment device also includes a shell 5 for accommodating the mixing tank 1, and a connecting component arranged on the shell 5, and the connecting component is suitable for fixing the shell 5 on the shell of the water purifier 4.

[0046] In an illustrative embodiment, Figure 6 As shown in (a), the housing 5 is a flat box-shaped structure, and the housing 5 is suitable for being attached to the side or bottom surface of the water purifier 4. Alternatively, the housing 5 can also be a cylindrical box-shaped structure.

[0047] In an alternative exemplary embodiment, Figure 6 As shown in (b), the top surface or the side surface of the housing 5 is recessed inward to form a slot, and the shape of the slot is adapted to the shape of the water purifier 4 so that the water purifier can be stored in the slot.

[0048] In an alternative exemplary embodiment, as Figure 6 As shown in (c), the outer shell 5 is an L-shaped box, and the outer shell is respectively attached to the side surface and the bottom surface of the water purifier 4.

[0049] According to the above-mentioned arrangement, the housing 5 of the circulating wastewater treatment device and the shell of the water purifier 4 are connected, which can save space.

[0050] In an illustrative embodiment, the volume of the mixing water tank 1 is 5-10L.

[0051] According to the above-mentioned setting, based on the total daily household water consumption of about 15~20L (corresponding to the amount of wastewater generated of about 15~20L), the volume of the mixing tank 1 is 5~10L, for example, 5L, 6L, 7L, 8L and 9L. It can accommodate wastewater in daily use without taking up too much space. Among them, for water purifiers with pure water pressure tank type and without pure water pressure tank type, the volume of the mixing tank of the former is generally slightly larger than that of the latter.

[0052] In an alternative schematic embodiment, the volume of the mixing water tank 1 can also be 3 to 6 L, for example, 3 L, 4 L, 5 L and 6 L, which is suitable for customer groups with less water consumption, such as single users with a daily water consumption of 3 to 5 L. Smaller mixing water tanks take up less space.

[0053] According to another aspect of the present disclosure, there is provided a water purifier, such as Figure 1-Figure 6 As shown, it includes a water purification component and a circulating wastewater treatment device described in any of the above embodiments. The water purification component includes a water inlet 42 and a wastewater outlet 41. The wastewater pipeline 2 of the circulating wastewater treatment device is connected to the wastewater outlet 41, and the first water outlet 13 of the mixing tank 1 of the circulating wastewater treatment device is connected to the water inlet 41. The mixing tank 1 is arranged on the side and / or bottom of the water purification component.

[0054] According to the above-mentioned setting mode, the wastewater discharged from the water purification component flows into the mixing water tank 1 through the wastewater pipeline, and is mixed and diluted with tap water inside the tank 14 to obtain mixed water, which can be used to supply the water purifier 4 for further purification and filtration. At the same time, the mixed water continues to diffuse and dilute with the tap water in the tap water pipeline 3, and is discharged through other water outlets for use. The wastewater generated by the water purifier 4 is recycled and reused, which does not affect the purification and filtration effect of the household purifier, thereby improving the utilization rate of water resources.

[0055] In an optional illustrative embodiment, the circulating wastewater treatment device also includes a display, which is arranged on the shell. The display is used to display the TDS value of the mixed water in the mixing tank in real time, so that the user can observe whether it is suitable for continuous water production.

[0056] So far, the embodiments of the present disclosure have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0057] It should also be noted that, in the specific embodiments of the present disclosure, unless otherwise indicated, the numerical parameters in the present specification and the attached claims are approximate values ​​and can be changed according to the desired characteristics obtained through the content of the present disclosure. Specifically, all numbers used in the specification and claims to express the size, range conditions, etc. of the composition should be understood to be modified by the term "about" in all cases. In general, the meaning of the expression refers to the change of ±10% in some embodiments, ±5% in some embodiments, ±1% in some embodiments, and ±0.5% in some embodiments by a specific number.

[0058] It will be appreciated by those skilled in the art that the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways, even if such combinations and / or combinations are not explicitly described in the present disclosure. In particular, the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways without departing from the spirit and teachings of the present disclosure. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0059] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present disclosure. It should be understood that the above are only specific embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A circulating wastewater treatment device, characterized in that: include: A wastewater pipeline, one end of which is suitable for connecting to the wastewater outlet of the water purifier, and a one-way valve is provided on the wastewater pipeline; The mixing water tank comprises a tank body, and the tank body is provided with: a first water inlet connected to the other end of the wastewater pipeline to receive wastewater flowing out of the wastewater pipeline; a second water inlet, connected to a tap water pipeline, for introducing tap water to preliminarily dilute the wastewater in the box and form mixed water; a first water outlet, connected to a water inlet of the water purifier; as well as Second water outlet; a faucet, connected to the second water outlet, the faucet being configured to reduce the TDS value of the mixed water by discharging at least a portion of the mixed water; Wherein, during the interval of water production, the mixed water is continuously diluted by the tap water in the tap water pipeline.

2. The circulating wastewater treatment device according to claim 1, characterized in that: Also includes: A TDS sensor is disposed in the mixing tank, and is suitable for obtaining the TDS value of the mixed water in real time, or the TDS sensor is disposed on the pipeline between the first water outlet and the water inlet of the water purifier, and is suitable for obtaining the TDS value of the water flowing into the water purifier in real time; A three-way connector, arranged on the wastewater pipeline, wherein the three-way connector is located upstream of the one-way valve; A waste water pipe, one end of which is connected to the three-way joint and the other end of which is suitable for connecting to a sewer pipe; as well as The solenoid valve is arranged on the waste water pipe, wherein, in response to the TDS value monitored by the TDS sensor exceeding a preset threshold, the solenoid valve is opened to discharge the waste water through the waste water pipe.

3. The circulating wastewater treatment device according to claim 1 or 2, characterized in that: The distance between the second water inlet and the first water outlet is smaller than the distance between the first water inlet and the first water outlet.

4. The circulating wastewater treatment device according to claim 1 or 2, characterized in that: The mixing tank also includes: a partition plate, arranged on the inner side wall of the box body, the partition plate being adapted to form a channel in the box body for the mixed water to flow; Wherein, the first water inlet and the first water outlet are respectively arranged at two ends of the channel.

5. The circulating wastewater treatment device according to claim 4, characterized in that: There are multiple partitions, and the multiple partitions are staggered and arranged at intervals in the box to divide the space inside the box into multiple S-shaped waterways, wherein the first water inlet and the first water outlet are respectively located at two ends of the S-shaped waterway, and the second water inlet is arranged adjacent to the first water outlet.

6. The circulating wastewater treatment device according to claim 4, characterized in that: The partition is a spiral plate, which divides the space inside the box into a spiral waterway, wherein the first water inlet and the first water outlet are respectively located at two ends of the spiral waterway, and the second water inlet is arranged adjacent to the first water outlet.

7. The circulating wastewater treatment device according to claim 1 or 2, characterized in that: Also includes: A housing for accommodating the mixing tank; as well as A connecting assembly is arranged on the outer shell, and the connecting assembly is suitable for fixing the outer shell on the housing of the water purifier.

8. The circulating wastewater treatment device according to claim 7, characterized in that: The shell is a flat or cylindrical box-shaped structure, and the shell is suitable for being attached to the side or bottom surface of the water purifier; or The top surface or the side surface of the housing is recessed inward to form a slot, and the shape of the slot is adapted to the shape of the water purifier so that the water purifier can be stored in the slot; or The outer shell is an L-shaped box, and the outer shell is respectively attached to the side surface and the bottom surface of the water purifier.

9. The circulating wastewater treatment device according to claim 1, characterized in that: The volume range of the mixing water tank includes 5 to 10L.

10. A household water purifier, characterized in that: include: Water purification components, including water inlet and wastewater outlet; as well as The circulating wastewater treatment device according to any one of claims 1 to 9, wherein the wastewater pipeline of the circulating wastewater treatment device is connected to the wastewater outlet, and the first water outlet of the mixing tank of the circulating wastewater treatment device is connected to the water inlet; Wherein, the mixing water tank is arranged on the side and / or bottom of the water purification component.

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