Water purifier

Abstract

The utility model relates to the technical field of water purification, in particular to a water purifier. The water purifier comprises a water inlet pipeline, a reverse osmosis filter element, a pure water outlet pipe, a waste water outlet pipe and a regulating valve assembly, an inlet of the water inlet pipeline is used for being communicated with a raw water supply end, a booster pump and a first control valve are arranged on the water inlet pipeline, and a raw water inlet of the reverse osmosis filter element is communicated with an outlet of the water inlet pipeline; the pure water outlet pipe is communicated with a pure water outlet of the reverse osmosis filter element, the waste water outlet pipe is communicated with a concentrated water outlet of the reverse osmosis filter element, the regulating valve assembly is communicated with the waste water outlet pipe and comprises a waste water regulating valve and a waste water flushing electromagnetic valve which are connected in parallel, and the waste water regulating valve is used for stepless regulation of drainage flow of the waste water outlet pipe. According to the water purifier provided by the utility model, the drainage flow of the wastewater outlet pipe is ensured, the problem that the wastewater regulating valve is stuck is avoided, and the service lives of the regulating valve assembly and the reverse osmosis filter element are effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and in particular to a water purifier. Background Technology

[0002] Existing water purifiers primarily rely on reverse osmosis (RO) filters to remove raw water and produce the desired pure water. However, when the water purifier is in standby mode, the RO filter contains raw water, concentrated water, and pure water simultaneously. The raw water and concentrated water are located before the RO membrane, while the pure water is located after the membrane. Furthermore, the TDS (Total Dissolved Solids) values ​​of the raw water and concentrated water are significantly higher than those of the pure water. If the water purifier remains in standby mode for an extended period, ions from the raw water and concentrated water in the RO filter will diffuse into the pure water, increasing the TDS value of the pure water. This results in a higher TDS value for the first cup of pure water produced, negatively impacting the user experience and reducing the lifespan of the RO filter.

[0003] In related technologies, reverse osmosis filter cartridges need to be flushed regularly to reduce the TDS value. However, the wastewater ratio adjustment and flushing level adjustment share the same water channel, which greatly increases the frequency of use of the regulating valve on this water channel. This can easily cause the valve core in the regulating valve to jam due to frequent operation, resulting in the failure of the flushing function and reducing the service life of the regulating valve and the reverse osmosis filter cartridge.

[0004] Therefore, there is an urgent need for a water purifier to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a water purifier that ensures the drainage flow of the wastewater outlet pipe, avoids the problem of the wastewater regulating valve getting stuck, and effectively guarantees the service life of the regulating valve assembly and the reverse osmosis filter element.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A water purifier, comprising:

[0008] The water inlet pipeline has an inlet for connecting to the raw water supply end, and is equipped with a booster pump and a first control valve.

[0009] A reverse osmosis filter element, wherein the raw water inlet of the reverse osmosis filter element is connected to the outlet of the inlet pipe;

[0010] The pure water outlet pipe is connected to the pure water outlet of the reverse osmosis filter element;

[0011] The wastewater outlet pipe is connected to the concentrate outlet of the reverse osmosis filter element; and

[0012] A regulating valve assembly is connected to the wastewater outlet pipe. The regulating valve assembly includes a wastewater regulating valve and a wastewater flushing solenoid valve connected in parallel. The wastewater regulating valve is configured to steplessly regulate the drainage flow rate of the wastewater outlet pipe.

[0013] As an optional solution, the wastewater outlet pipe includes a first pipe and a second pipe, wherein the first end of the first pipe is connected to the concentrate outlet of the reverse osmosis filter element.

[0014] The regulating valve assembly also includes a valve body, which is provided with an inlet and an outlet. The inlet is connected to the second end of the first pipeline, and the outlet is connected to the second pipeline.

[0015] The valve body is provided with an inner cavity and an annular outer cavity. The annular outer cavity surrounds the outer periphery of the inner cavity. The annular outer cavity is connected to the water inlet, and the inner cavity is connected to the water outlet.

[0016] The inner cavity and the annular outer cavity have a first flow channel and a second flow channel. The first flow channel connects the inner cavity and the annular outer cavity, and the second flow channel connects the inner cavity and the annular outer cavity. The wastewater flushing solenoid valve is used to block or open the first flow channel. The wastewater regulating valve is partially disposed in the second flow channel and is used to steplessly regulate the flow rate of the second flow channel.

[0017] As an optional solution, the wastewater regulating valve includes:

[0018] Drive motor;

[0019] The movable piece is rotatably disposed in the second flow channel. The movable piece has a first flow hole that extends through it along its axial direction. The output shaft of the drive motor extends into the second flow channel and is connected to the movable piece for transmission.

[0020] A fixing plate is disposed in the second flow channel. The fixing plate has a second flow hole extending through it along its axial direction. The second flow hole communicates with the inner cavity. The end face of the fixing plate abuts against the end face of the movable plate. An arc-shaped groove is formed on the end face of the fixing plate that abuts against the movable plate. Along the extension direction of the arc-shaped groove, the size of the arc-shaped groove gradually increases or decreases. One end of the arc-shaped groove with the largest size communicates with the second flow hole. The first flow hole is opposite to the arc-shaped groove. The drive motor is configured to drive the first flow hole of the movable plate to rotate relative to the fixing plate along the arc-shaped groove.

[0021] Alternatively, the movable piece may be a ceramic piece; and / or the fixed piece may be a ceramic piece.

[0022] As an optional solution, the wastewater regulating valve further includes:

[0023] An elastic element abuts against the movable piece, the elastic element being configured to always have a tendency to drive the movable piece to abut against the fixed piece.

[0024] As an optional solution, a third flow hole communicating with the second flow hole is provided on the cavity wall of the inner cavity, and the wastewater regulating valve further includes:

[0025] A first sealing ring is disposed around the outer periphery of the second flow hole and the third flow hole, and the first sealing ring is sandwiched between the outer wall of the inner cavity and the fixing piece.

[0026] As an optional solution, the wastewater regulating valve further includes:

[0027] A mounting sleeve is fixedly inserted into the second flow channel, and the outer peripheral wall of the mounting sleeve is in sealing contact with the inner cavity wall of the second flow channel. The output shaft of the drive motor passes through the mounting sleeve.

[0028] The second sealing ring is disposed around the outer periphery of the output shaft of the drive motor and is sandwiched between the output shaft of the drive motor and the inner wall of the mounting sleeve.

[0029] As an optional feature, the water purifier also includes:

[0030] A pure water return pipeline is provided, wherein the inlet of the pure water return pipeline is connected to the pure water outlet pipeline, and the outlet of the pure water return pipeline is connected to the inlet pipeline. The pure water return pipeline can return a portion of the pure water in the pure water outlet pipeline to the inlet pipeline, and the flow rate of the wastewater outlet pipeline can be adjusted by the wastewater regulating valve, thereby adjusting the flow rate of the pure water returning in the pure water return pipeline.

[0031] As an optional feature, the water purifier also includes:

[0032] A post-filter element is connected to the pure water outlet pipe. Along the flow direction of water in the pure water outlet pipe, the connection point between the inlet of the pure water return pipe and the pure water outlet pipe is located downstream of the post-filter element.

[0033] As an optional feature, the water purifier also includes:

[0034] A first TDS detector is communicatively connected to the wastewater regulating valve. The first TDS detector is installed on the inlet pipe and is configured to detect the TDS value of the water in the inlet pipe. The wastewater regulating valve can adjust the drainage flow rate of the wastewater outlet pipe according to the detection value of the first TDS detector.

[0035] The beneficial effects of this utility model are:

[0036] This utility model provides a water purifier, which includes an inlet pipe, a reverse osmosis filter element, a pure water outlet pipe, a wastewater outlet pipe, and a regulating valve assembly. The inlet of the inlet pipe is used to connect to the raw water supply end. A booster pump and a first control valve are installed on the inlet pipe. The raw water inlet of the reverse osmosis filter element is connected to the outlet of the inlet pipe. The pure water outlet pipe is connected to the pure water outlet of the reverse osmosis filter element. The wastewater outlet pipe is connected to the concentrated water outlet of the reverse osmosis filter element. The regulating valve assembly is connected to the wastewater outlet pipe. The regulating valve assembly includes a wastewater regulating valve and a wastewater flushing solenoid valve connected in parallel. The wastewater regulating valve is used to steplessly regulate the drainage flow of the wastewater outlet pipe.

[0037] The water purifier provided by this utility model connects a wastewater regulating valve and a wastewater flushing solenoid valve in parallel. When the water purifier is producing water normally, the wastewater flushing solenoid valve is fully closed, allowing the wastewater regulating valve to steplessly adjust the drainage flow of the wastewater outlet pipe, thereby regulating the wastewater ratio. When the water purifier is flushing, the wastewater regulating valve is closed, and the wastewater flushing solenoid valve is fully open to ensure the flow of the wastewater outlet pipe. This effectively reduces the frequency of use of the wastewater regulating valve, avoiding the problem of the wastewater regulating valve getting stuck due to frequent use, and effectively ensuring the service life of the regulating valve assembly. Even if the wastewater regulating valve gets stuck, the water purifier can still produce water normally under a certain wastewater ratio. Furthermore, since the wastewater flushing solenoid valve is in normal working condition, the flushing function of the water purifier is also guaranteed, effectively ensuring the service life of the reverse osmosis filter element. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the water circuit structure of the water purifier provided in this embodiment of the utility model;

[0039] Figure 2 This is a schematic diagram of the structure of the regulating valve assembly provided in this embodiment of the utility model;

[0040] Figure 3 This is a first structural cross-sectional view of the regulating valve assembly provided in this embodiment of the utility model;

[0041] Figure 4 This is a second structural cross-sectional view of the regulating valve assembly provided in this embodiment of the utility model;

[0042] Figure 5This is a schematic diagram of the structure of the fixing piece provided in an embodiment of this utility model.

[0043] In the picture:

[0044] 1. Inlet pipe; 11. Booster pump; 12. First control valve; 2. Reverse osmosis filter element; 3. Pure water outlet pipe; 31. Second check valve; 32. High-pressure switch; 4. Wastewater outlet pipe; 41. First pipe; 42. Second pipe; 5. Regulating valve assembly; 51. Wastewater regulating valve; 511. Drive motor; 512. Movable plate; 5121. First flow hole; 513. Fixed plate; 5131. Second flow hole; 5132. Arc groove; 514. Elastic element; 515. First sealing ring 516. Mounting seat; 517. Second sealing ring; 52. Wastewater flushing solenoid valve; 53. Valve body; 531. Inlet pipe; 532. Outlet pipe; 533. Inner cavity; 5331. Third flow hole; 534. Annular outer cavity; 5341. Fourth flow hole; 535. First flow channel; 536. Second flow channel; 6. Pure water return pipeline; 61. Second control valve; 62. First check valve; 7. Composite filter element; 8. First TDS detection element; 9. Second TDS detection element. Detailed Implementation

[0045] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0049] In related technologies, reverse osmosis filter cartridges need to be flushed regularly to reduce the TDS value. However, the wastewater adjustment for wastewater ratio regulation and the flushing setting adjustment share the same water channel, which greatly increases the frequency of use of the regulating valve on this water channel. This can easily cause the valve core in the regulating valve to jam due to frequent operation, resulting in the failure of the flushing function and reducing the service life of the regulating valve and the reverse osmosis filter cartridge.

[0050] To solve the above problems, such as Figure 1 As shown, this embodiment provides a water purifier, which includes an inlet pipe 1, a reverse osmosis filter element 2, a pure water outlet pipe 3, a wastewater outlet pipe 4, and a regulating valve assembly 5. The inlet of the inlet pipe 1 is used to connect to the raw water supply end. A booster pump 11 and a first control valve 12 are installed on the inlet pipe 1. The raw water inlet of the reverse osmosis filter element 2 is connected to the outlet of the inlet pipe 1. The pure water outlet pipe 3 is connected to the pure water outlet of the reverse osmosis filter element 2. The wastewater outlet pipe 4 is connected to the concentrated water outlet of the reverse osmosis filter element 2. The regulating valve assembly 5 is connected to the wastewater outlet pipe 4. The regulating valve assembly 5 includes a wastewater regulating valve 51 and a wastewater flushing solenoid valve 52 connected in parallel. The wastewater regulating valve 51 is used to steplessly regulate the drainage flow of the wastewater outlet pipe 4. The water purifier provided in this embodiment connects the wastewater regulating valve 51 and the wastewater flushing solenoid valve 52 in parallel. When the water purifier is producing water normally, the wastewater flushing solenoid valve 52 is fully closed, allowing the wastewater regulating valve 51 to steplessly regulate the drainage flow of the wastewater outlet pipe 4, thereby adjusting the wastewater ratio. When the water purifier is flushing, the wastewater regulating valve 51 is closed, and the wastewater flushing solenoid valve 52 is fully open to ensure the flow rate of the wastewater outlet pipe 4. This configuration effectively reduces the frequency of use of the wastewater regulating valve 51, preventing it from jamming due to frequent use and effectively ensuring the service life of the regulating valve assembly 51. Even if the wastewater regulating valve 51 jams, the water purifier can still produce water normally at a certain wastewater ratio. Furthermore, since the wastewater flushing solenoid valve 52 is in normal working condition, the flushing function of the water purifier is also guaranteed, effectively ensuring the service life of the reverse osmosis filter element 2.

[0051] It should be noted that when the water purifier is working normally, the booster pump 11 and the first control valve 12 are started, and the wastewater flushing solenoid valve 52 is in a fully closed state. At this time, the raw water supplied by the raw water supply end enters the reverse osmosis filter element 2 through the raw water inlet of the reverse osmosis filter element 2. After being filtered by the reverse osmosis filter element 2, the pure water produced is introduced into the pure water outlet pipe 3 through the pure water outlet of the reverse osmosis filter element 2, and the concentrated water produced is introduced into the wastewater outlet pipe 4 through the concentrated water outlet of the reverse osmosis filter element 2.

[0052] In this embodiment, as Figure 1 As shown, the water purifier also includes a pure water return pipe 6. The inlet of the pure water return pipe 6 is connected to the pure water outlet pipe 3, and the outlet of the pure water return pipe 6 is connected to the inlet pipe 1. The pure water return pipe 6 can return a portion of the pure water in the pure water outlet pipe 3 to the inlet pipe 1. Furthermore, by adjusting the drainage flow of the wastewater outlet pipe 4 through the wastewater regulating valve 51, the flow rate of the pure water returning in the pure water return pipe 6 can be adjusted. By setting up the pure water return pipe 6 to return a portion of the pure water from the pure water outlet pipe 3 to the inlet pipe 1, and by adjusting the drainage flow of the wastewater outlet pipe 4 through the wastewater regulating valve 51, the flow rate of the pure water returning in the pure water return pipe 6 is adjusted, increasing the pure water content mixed in the inlet pipe 1, improving the backflow flushing effect on the reverse osmosis filter element 2, effectively reducing the TDS value of the water entering the reverse osmosis filter element 2, and thus effectively reducing the TDS value of the first cup of water. Furthermore, by adjusting the drainage flow rate of the wastewater regulating valve 51, the flow rate of the returned pure water can be adjusted, thereby improving the flushing effect on the reverse osmosis filter element 2 and simplifying operation. It should be noted that when flushing is performed through the pure water return pipeline 6, the wastewater flushing solenoid valve 52 is also in a fully closed state.

[0053] In this embodiment, the wastewater flushing solenoid valve 52 is in a fully closed state. The wastewater regulating valve 51 adjusts the drainage flow rate of the wastewater outlet pipe 4, thereby regulating the pre-membrane pressure of the reverse osmosis filter element 2 and thus adjusting the flow rate of pure water in the pure water outlet pipe 3. Since the inlet of the pure water return pipe 6 is connected to the pure water outlet pipe 3, the flow rate of pure water returning in the pure water return pipe 6 can be adjusted. Specifically, when the wastewater regulating valve 51 reduces the drainage flow rate of the wastewater outlet pipe 4, the pre-membrane pressure of the reverse osmosis filter element 2 increases, thereby increasing the flow rate of pure water in the pure water outlet pipe 3 and thus increasing the flow rate of pure water returning in the pure water return pipe 6. Since the flow rate entering the reverse osmosis filter element 2 is constant, the flow rate of raw water flowing into the inlet pipe 1 will decrease, ensuring that the pure water content in the water entering the reverse osmosis filter element 2 increases, which also helps to reduce the drainage flow rate of the wastewater outlet pipe 4.

[0054] Optionally, in this embodiment, as Figure 1As shown, a second control valve 61 and a first check valve 62 are installed on the pure water return pipeline 6. The second control valve 61 facilitates the control of the opening and closing of the pure water return pipeline 6. In addition, the first check valve 62 prevents the backflow of pure water in the pure water return pipeline 6, avoids the problem of reverse rotation of the booster pump 11, and ensures the reliability of operation.

[0055] Optionally, in this embodiment, as Figure 1 As shown, a second one-way valve 31 and a high-pressure switch 32 are installed on the pure water outlet pipe 3, and the high-pressure switch 32 is located downstream of the second one-way valve 31 along the flow direction of the water in the pure water outlet pipe 3. By setting the second one-way valve 31, the backflow of pure water in the pure water outlet pipe 3 is prevented, the problem of reverse rotation of the booster pump 11 is avoided, and the reliability of operation is ensured. In this embodiment, the high-pressure switch 32 has the function of cutting off the power supply and stopping the machine. In addition, the high-pressure switch 32 can also prevent the booster pump 11 from running at full speed. Since the specific working principle and structure of the high-pressure switch 32 are existing technologies, they will not be described in detail here.

[0056] Optionally, in this embodiment, the water purifier further includes a first TDS detector 8, which is communicatively connected to the wastewater regulating valve 51. The first TDS detector 8 is disposed on the inlet pipe 1 and is used to detect the TDS value of the water in the inlet pipe 1. The wastewater regulating valve 51 can adjust the drainage flow rate of the wastewater outlet pipe 4 according to the detection value of the first TDS detector 8. Optionally, in this embodiment, the first TDS detector 8 can be a TDS sensor.

[0057] Optionally, in this embodiment, when pure water is returned through the pure water return pipeline 6, both the booster pump 11 and the first control valve 12 are in the open state, the wastewater flushing solenoid valve 52 is in the fully closed state, and when pure water is returned through the pure water return pipeline 6, it first operates in the first return mode. When the first TDS detector 8 detects that the TDS value of the water in the inlet pipeline 1 before entering the reverse osmosis filter element 2 is less than the first preset value, it operates in the second return mode. When the first TDS detector 8 detects that the TDS value of the water in the inlet pipeline 1 before entering the reverse osmosis filter element 2 is less than the second preset value, the pure water return pipeline 6 stops returning pure water. It should be noted that when operating in the first reflux mode, the wastewater regulating valve 51 adjusts the drainage flow of the wastewater outlet pipe 4 to the first preset flow rate. When the water purifier operates in the second reflux mode, the wastewater regulating valve 51 adjusts the drainage flow of the wastewater outlet pipe 4 to the second preset flow rate, and the first preset flow rate is greater than the second preset flow rate, meaning the first preset value is greater than the second preset value. This configuration allows the pure water reflux pipeline 6 to first flush the reverse osmosis filter element 2 with a small flow rate of pure water. When the detection value of the first TDS detector 8 is less than the first preset value, the pure water reflux pipeline 6 then flushes the reverse osmosis filter element 2 with a large flow rate of pure water, thereby gradually increasing the amount of pure water used to flush the reverse osmosis filter element 2 and improving the flushing effect.

[0058] Optionally, in this embodiment, before pure water is returned to the pure water return pipeline 6, the first TDS detector 8 detects the TDS value of the water in the inlet pipeline 1 before it enters the reverse osmosis filter element 2. 初始 The first preset value is aTSD. 初始 The second preset value is bTSD 初始 And a > b. The above numerical limits can meet the water filtration needs of different regions. Optionally, in this embodiment, a = (V1 + V3 / 2) / V2, b = V1 / V2, where V1 is the volume of pure water returned by the pure water return pipe 6, V2 is the total volume of raw water and returned pure water in the inlet pipe 1, and V3 is the volume of concentrated water generated. That is, in this embodiment, the first preset value is (V1 + V3 / 2) / V2·TSD. 初始 The second preset value is V1 / V2·TSD 初始 .

[0059] Optionally, in this embodiment, as Figure 1 As shown, the water purifier also includes a second TDS detector 9, which is installed on the pure water outlet pipe 3. The second TDS detector 9 is used to detect the TDS value of the pure water in the pure water outlet pipe 3. By setting the second TDS detector 9, it is convenient to monitor the TDS value of the pure water discharged from the pure water outlet pipe 3 in real time, ensuring the safety of the user's water use. Optionally, in this embodiment, the second TDS detector 9 can be a TDS sensor.

[0060] In this embodiment, as Figure 1 As shown, the water purifier also includes a composite filter element 7, which includes a pre-filter element and a post-filter element. The pre-filter element is connected to the inlet pipe 1. Along the flow direction of water in the inlet pipe 1, the pre-filter element is located upstream of the reverse osmosis filter element 2. The connection between the outlet of the pure water return pipe 6 and the inlet pipe 1 is located between the pre-filter element and the reverse osmosis filter element 2. The post-filter element is connected to the pure water outlet pipe 3. Along the flow direction of water in the pure water outlet pipe 3, the connection between the inlet of the pure water return pipe 6 and the pure water outlet pipe 3 is located downstream of the post-filter element. By setting up the composite filter element 7, when the water purifier is working normally, the booster pump 11 and the first control valve 12 are started, and the wastewater regulating valve 51 regulates the drainage flow of the wastewater outlet pipe 4. At this time, the raw water supplied by the raw water supply end is initially filtered through the pre-filter element in the composite filter element 7, and then enters the reverse osmosis filter element 2 for filtration. The pure water produced in the reverse osmosis filter element 2 is introduced into the pure water outlet pipe 3 through the pure water outlet of the reverse osmosis filter element 2. After being filtered by the post-filter element of the composite filter element 7 in the pure water outlet pipe 3, it is discharged. The concentrated water produced in the reverse osmosis filter element 2 is introduced into the wastewater outlet pipe 4 through the concentrated water outlet of the reverse osmosis filter element 2, effectively ensuring the filtration effect of the water purifier on the raw water. Furthermore, the connection method of the aforementioned pure water return pipeline 6 allows the pure water in the pure water outlet pipe 3 to flow back to the front end of the reverse osmosis filter 2 after passing through the post-filter cartridge. This ensures that the water behind the reverse osmosis filter cartridge 2 can flow, preventing stagnant water in the pipeline behind the reverse osmosis filter cartridge 2 and the post-filter cartridge, thus preventing bacterial growth and ensuring the safety of the water used in the water purifier. In other embodiments, the post-filter cartridge and the pre-filter cartridge can also be installed independently.

[0061] In this embodiment, as Figures 1-3As shown, the wastewater outlet pipe 4 includes a first pipe 41 and a second pipe 42. The first end of the first pipe 41 is connected to the concentrate outlet of the reverse osmosis filter element 2. The regulating valve assembly 5 also includes a valve body 53, which is provided with an inlet pipe 531 and an outlet pipe 532. The inlet pipe 531 is connected to the second end of the first pipe 41, and the outlet pipe 532 is connected to the second pipe 42. The valve body 53 is provided with an inner cavity 533 and an annular outer cavity 534. The annular outer cavity 534 surrounds the outer periphery of the inner cavity 533 and is connected to the inlet pipe 531. 31 is connected, and the inner cavity 533 is connected to the outlet 532; there is a first flow channel 535 and a second flow channel 536 between the inner cavity 533 and the annular outer cavity 534. The first flow channel 535 connects the inner cavity 533 and the annular outer cavity 534, and the second flow channel 536 connects the inner cavity 533 and the annular outer cavity 534. The wastewater flushing solenoid valve 52 is used to block or open the first flow channel 535. The wastewater regulating valve 51 is partially set in the second flow channel 536. The wastewater regulating valve 51 is used to steplessly regulate the flow rate of the second flow channel 536. When the wastewater flushing solenoid valve 52 is fully closed, it blocks the first flow channel 535. At this time, the concentrated water discharged from the concentrated water outlet of the reverse osmosis filter element 2 flows sequentially through the first pipe 41, the inlet pipe 531, the annular outer cavity 534, the second flow channel 536, the inner cavity 533, and the outlet pipe 532 into the second pipe 42, and is discharged through the second pipe 42. The stepless adjustment of the drainage flow rate of the wastewater outlet pipe 4 can be achieved by steplessly adjusting the flow rate of the second flow channel 536 using the wastewater regulating valve 51. When the water flushing solenoid valve 52 is fully open and the wastewater regulating valve 51 completely blocks the second flow channel 536, the concentrated water discharged from the concentrated water outlet of the reverse osmosis filter element 2 flows sequentially through the first pipe 41, the inlet pipe 531, the annular outer cavity 534, the first flow channel 535, the inner cavity 533, and the outlet pipe 532 into the second pipe 42, and is discharged through the second pipe 42. At this time, the drainage flow of the wastewater outlet pipe 4 reaches its maximum, and it also prevents impurities in the water in the first pipe 41 from clogging the wastewater regulating valve 51 in the second flow channel 536. The above structure realizes the parallel connection of the wastewater flushing solenoid valve 52 and the wastewater regulating valve 51, and makes the structure of the regulating valve assembly 5 more compact and the layout more reasonable. Since the specific structure of the wastewater flushing solenoid valve 52 and the principle of state switching are existing technologies, they will not be described in detail here.

[0062] It should be noted that, in this embodiment, as Figure 3 As shown, a fourth flow hole 5341 is provided on the wall of the annular outer cavity 534, thereby enabling the annular outer cavity 534 to communicate with the water inlet 531 through the fourth flow hole 5341. Optionally, a third flow hole 5331 is provided on the wall of the inner cavity 533, and the inner cavity 533 communicates with the second flow channel 536 through the third flow hole 5331.

[0063] In this embodiment, as Figures 3-5 As shown, the wastewater regulating valve 51 includes a drive motor 511, a movable plate 512, and a fixed plate 513. The movable plate 512 is rotatably disposed in the second flow channel 536. The movable plate 512 has a first flow hole 5121 extending through it axially. The output shaft of the drive motor 511 extends into the second flow channel 536 and is connected to the movable plate 512 for transmission. The fixed plate 513 is housed within the second flow channel 536 and has a second flow hole 5131 extending through it axially. The second flow hole 5131 connects to the inner cavity 513. 33 are connected. The end face of the fixed piece 513 abuts against the end face of the movable piece 512. An arc-shaped groove 5132 is provided on the end face of the fixed piece 513 and the movable piece 512. Along the extension direction of the arc-shaped groove 5132, the size of the arc-shaped groove 5132 gradually increases or decreases. One end of the arc-shaped groove 5132 with the largest size is connected to the second flow hole 5131. The first flow hole 5121 is opposite to the arc-shaped groove 5132. The drive motor 511 is used to drive the first flow hole 5121 of the movable piece 512 to rotate relative to the fixed piece 513 along the arc-shaped groove 5132. The above configuration allows the concentrated water in the second flow channel 536 to sequentially pass through the first flow hole 5121, the arc groove 5132, the second flow hole 5131, and the third flow hole 5331 into the inner cavity 533. When the first flow hole 5121 is relatively connected to the larger part of the arc groove 5132, the flow rate of the second flow channel 536 into the inner cavity 533 is relatively large. When the first flow hole 5121 is relatively connected to the smaller part of the arc groove 5132, the flow rate of the second flow channel 536 into the inner cavity 533 is relatively small. When the first flow hole 5121 is directly connected to the second flow hole 5131, the flow rate of the second flow channel 536 into the inner cavity 533 reaches its maximum. When the first flow hole 5121 is not relatively connected to the arc groove 5132 and the second flow hole 5131, the first flow hole 5121 is directly blocked by the end face of the fixing piece 513, and the second flow channel 536 is in a blocked state. It should be noted that the inner diameter of the first flow hole 5121 is not less than the maximum inner diameter of the arc groove 5132. This configuration allows for stepless adjustment of the flow rate in the second flow channel 536 by driving the movable plate 512 to rotate relative to the fixed plate 513 via the drive motor 511, eliminating the need for manual adjustment and providing greater intelligence and precision. It should also be noted that in this embodiment, the drive motor 511 can be a stepper motor, and the drive motor 511 is communicatively connected to the first TDS detection element 8.

[0064] Optionally, in this embodiment, both the movable piece 512 and the fixed piece 513 are ceramic pieces. This configuration effectively ensures the structural strength and wear resistance of the movable piece 512 and the fixed piece 513, preventing wear when they rotate relative to each other in contact, thus improving their reliability and ensuring the reliability of the wastewater regulating valve 51 in regulating the flow rate of the second flow channel 536. In other embodiments, the movable piece 512 and the fixed piece 513 can also be made of other wear-resistant materials.

[0065] In this embodiment, as Figure 3 and Figure 4 As shown, the wastewater regulating valve 51 also includes an elastic element 514, which abuts against the movable plate 512. The elastic element 514 is configured to always tend to drive the movable plate 512 to abut against the fixed plate 513. By setting the elastic element 514, the tightness and reliability of the abutment between the end face of the movable plate 512 and the end face of the fixed plate 513 are ensured, avoiding gaps between the end faces of the movable plate 512 and the fixed plate 513, which would reduce the accuracy of the wastewater regulating valve 51 in regulating the flow rate of the second flow channel 536. Optionally, in this embodiment, the elastic element 514 is a spring, which is sleeved on the output shaft of the drive motor 511, thereby realizing the positioning and installation of the spring.

[0066] Optionally, in this embodiment, as Figure 3 and Figure 4 As shown, the wastewater regulating valve 51 also includes a first sealing ring 515. The first sealing ring 515 surrounds the outer periphery of the second flow hole 5131 and the third flow hole 5331, and is sandwiched between the outer wall of the inner cavity 533 and the fixing piece 513. By setting the first sealing ring 515, it is ensured that the second flow channel 536 and the inner cavity 533 are connected only sequentially through the second flow hole 5131 and the third flow hole 5331, preventing concentrated water in the second flow channel 536 from directly entering the inner cavity 533 through the third flow hole 5331, thus ensuring the accuracy of the wastewater regulating valve 51 in regulating the flow rate of the second flow channel 536.

[0067] Optionally, in this embodiment, as Figure 3 and Figure 4As shown, the wastewater regulating valve 51 also includes a mounting sleeve 516 and a second sealing ring 517. The mounting sleeve 516 is fixedly inserted into the second flow channel 536, and its outer peripheral wall seals against the inner wall of the second flow channel 536. The output shaft of the drive motor 511 passes through the mounting sleeve 516. The second sealing ring 517 surrounds the outer periphery of the output shaft of the drive motor 511 and is sandwiched between the output shaft of the drive motor 511 and the inner wall of the mounting sleeve 516. This arrangement prevents concentrated water in the second flow channel 536 from leaking through the gap between the output shaft of the drive motor 511 and the outer peripheral wall of the mounting sleeve 516, ensuring a good seal for the second flow channel 536. Optionally, in this embodiment, a sealing ring may also be provided between the outer peripheral wall of the mounting sleeve 516 and the inner cavity wall of the second flow channel 536, thereby ensuring the sealing effect between the outer peripheral wall of the mounting sleeve 516 and the inner cavity wall of the second flow channel 536.

[0068] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water purifier characterized by comprising: The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device.

2. The water purifier according to claim 1, characterized in that, The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device.

3. The water purifier according to claim 2, wherein The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. The application relates to a reverse osmosis water purifying device. 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The application relates to A fixed piece (513) is arranged to block the second flow passage (536), and a second flow hole (5131) penetrating through the fixed piece (513) in the axial direction is arranged on the fixed piece (513) and communicates with the inner cavity (533). The end surface of the fixed piece (513) abuts against the end surface of the movable piece (512), and an arc-shaped groove (5132) is arranged on the end surface of the fixed piece (513) abutting against the movable piece (512). The size of the arc-shaped groove (5132) gradually increases or decreases along the extension direction of the arc-shaped groove (5132). One end of the arc-shaped groove (5132) with the maximum size communicates with the second flow hole (5131), and the first flow hole (5121) is opposite to the arc-shaped groove (5132). The driving motor (511) is configured to drive the first flow hole (5121) of the movable piece (512) to rotate relative to the fixed piece (513) along the arc-shaped groove (5132).

4. The water purifier according to claim 3, wherein The movable piece (512) is a ceramic piece; and / or, the fixed piece (513) is a ceramic piece.

5. The water purifier according to claim 3, wherein The wastewater regulating valve (51) further comprises: An elastic member (514) abuts against the movable piece (512), and the elastic member (514) is configured to always have a tendency to drive the movable piece (512) to abut against the fixed piece (513).

6. The water purifier according to claim 3, wherein A third flow hole (5331) communicating with the second flow hole (5131) is arranged on the cavity wall of the inner cavity (533), and the wastewater regulating valve (51) further comprises: A first sealing ring (515) is arranged around the outer periphery of the second flow hole (5131) and the third flow hole (5331), and the first sealing ring (515) is clamped between the outer wall of the inner cavity (533) and the fixed piece (513).

7. The water purifier according to claim 3, wherein The wastewater regulating valve (51) further comprises: A mounting seat sleeve (516) is fixedly arranged in the second flow passage (536), and the outer peripheral wall of the mounting seat sleeve (516) sealingly abuts against the inner cavity wall of the second flow passage (536). The output shaft of the driving motor (511) is arranged in the mounting seat sleeve (516); and A second sealing ring (517) is arranged around the outer periphery of the output shaft of the driving motor (511), and the second sealing ring (517) is clamped between the output shaft of the driving motor (511) and the inner cavity wall of the mounting seat sleeve (516).

8. The water purifier according to any one of claims 1 to 7, characterized in that The water purifier further comprises: A pure water return pipeline (6) is provided, with a water inlet of the pure water return pipeline (6) being communicated with the pure water outlet pipeline (3), and a water outlet of the pure water return pipeline (6) being communicated with the water inlet pipeline (1), so that part of the pure water in the pure water outlet pipeline (3) can be returned to the water inlet pipeline (1), and the waste water discharge flow rate of the waste water outlet pipeline (4) can be adjusted by the waste water adjusting valve (51), and the flow rate of the pure water returned in the pure water return pipeline (6) can be adjusted.

9. The water purifier according to claim 8, characterized in that, The water purifier further comprises: A post filter is communicated with the pure water outlet pipeline (3) and is located downstream of the communication position of the water inlet of the pure water return pipeline (6) and the pure water outlet pipeline (3) along the water flow direction of the pure water outlet pipeline (3).

10. The water purifier according to claim 8, wherein The water purifier further comprises: A first TDS detection member (8) is communicated with the waste water adjusting valve (51), the first TDS detection member (8) is arranged on the water inlet pipeline (1), the first TDS detection member (8) is configured to detect the TDS value of the water in the water inlet pipeline (1), and the waste water adjusting valve (51) can adjust the waste water discharge flow rate of the waste water outlet pipeline (4) according to the detection value of the first TDS detection member (8).

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