Water purifying apparatus

Abstract

The utility model relates to water purification technical field, concretely provides a filter element and water outlet for water storage device, aims at solving the problem that the existing water purification equipment has unstable TDS value when adjusting water outlet TDS value. The water purification equipment of the application includes first water production unit, second water production unit, water outlet pipe, adjusting component, water outlet component and reflux pipe, and the water outlet end of first water production unit and the water outlet end of second water production unit are all communicated with water outlet pipe, adjusting component can adjust the water flow of first water source and or second water source inflow water outlet pipe, reflux pipe can make the water in water outlet pipe reflux to the upstream end of first water production unit and second water production unit, and water outlet pipe can selectively communicate with water outlet component or reflux pipe. The application can make the mixed water not meeting the demand reflux to the upstream end of first water production unit and second water production unit through reflux pipe, when the mixed water meets the demand, make the mixed water stably flow out from water outlet component, avoid the problem that the water outlet TDS value of water purification equipment is unstable.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and specifically provides a water purification device. Background Technology

[0002] As people's living standards improve, their demand for drinking water is also increasing. Water purifiers, water purifier-drinking machines, and other water purification equipment are gradually becoming essential drinking water facilities in people's daily lives.

[0003] Because different people have different taste preferences for drinking water, although some water purifiers on the market have the function of adjusting the TDS value of the output water, the "first glass of water" of the mixed water will have an unstable TDS value, resulting in a poor user experience. Utility Model Content

[0004] The present invention aims to solve the above-mentioned technical problems to at least a certain extent, that is, to at least a certain extent solve the problem that the unstable TDS value of the existing water purification equipment affects the user experience when adjusting the TDS value of the output water.

[0005] In a first aspect, the present invention provides a water purification device, comprising: a first water production unit for preparing a first water source; a second water production unit for preparing a second water source, wherein the TDS value of the first water source is greater than the TDS value of the second water source; a water outlet pipe, wherein the water outlet ends of the first water production unit and the second water production unit are both connected to the water outlet pipe so that the first water source and the second water source flow into the water outlet pipe; an adjusting component configured to adjust the water flow rate of the first water source and / or the second water source into the water outlet pipe; a water outlet component connected to the water outlet pipe and used to output water from the water outlet pipe for user use; and a return pipe capable of returning water from the water outlet pipe to the upstream end of the first water production unit and / or the second water production unit; wherein the water outlet pipe is selectively connected to the water outlet component or the return pipe.

[0006] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a first water outlet branch and a second water outlet branch. The first water production unit is connected to the water outlet pipe through the first water outlet branch, and the second water production unit is connected to the water outlet pipe through the second water outlet branch. The regulating component is a flow regulating valve, which is installed on the first water outlet branch and / or the second water outlet branch.

[0007] In the preferred embodiment of the above-mentioned water purification equipment, the regulating component is a proportional regulating valve, which has a first inlet, a second inlet and an outlet. The outlet of the first water production unit is connected to the first inlet, the outlet of the second water production unit is connected to the second inlet, and the outlet is connected to the outlet pipe. The proportional regulating valve can adjust the ratio of water flowing into the first inlet and the second inlet.

[0008] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a first TDS detection component, which is disposed on the water outlet pipe and is used to detect the TDS value of the mixed water after the first water source and the second water source are mixed.

[0009] In the preferred embodiment of the above-mentioned water purification equipment, the first TDS detection component is communicatively connected to the adjustment component.

[0010] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a first control valve and a second control valve. The first control valve is disposed on the outlet pipe and located at the downstream end of the return pipe, and the second control valve is disposed on the return pipe. Alternatively, the water purification equipment further includes a reversing valve. The first port of the reversing valve is connected to the outlet pipe, the second port of the reversing valve is connected to the outlet component, and the third port of the reversing valve is connected to the return pipe. The first port can selectively connect to the second port or the third port.

[0011] In the preferred embodiment of the above-mentioned water purification equipment, the first TDS detection component is communicatively connected to the first control valve and the second control valve; or, the first TDS detection component is communicatively connected to the reversing valve.

[0012] In the preferred technical solution of the above-mentioned water purification equipment, the second water production unit is a reverse osmosis membrane filter element. The first end of the return pipe is connected to the outlet pipe, and the second end of the return pipe is connected to the upstream end of the reverse osmosis membrane filter element, so as to transport the water from the pure water end of the reverse osmosis membrane filter element to the inlet end of the reverse osmosis membrane filter element.

[0013] In the preferred technical solution of the above-mentioned water purification equipment, the first water production unit is a pre-filtration unit. The water outlet of the first water production unit is connected to the water outlet pipe through a first water outlet branch. The water outlet of the first water production unit can also be connected to the second water production unit through a second water inlet pipe, so that the second water production unit can filter the first water source to produce the second water source.

[0014] In the preferred embodiment of the above-mentioned water purification equipment, a first one-way valve is provided on the return pipe. The first one-way valve is used to prevent water from flowing back into the outlet pipe from the upstream end of the first water production unit and / or the second water production unit.

[0015] When the above-mentioned preferred technical solution is adopted, the first water source prepared by the first water production unit and the second water source prepared by the second water production unit can flow into the outlet pipe for mixing. The regulating component can regulate the water flow rate of the first and second water sources into the outlet pipe, so as to realize the adjustable TDS value of the outlet water and meet the needs of different users for water with different TDS values. By setting the outlet pipe to be selectively connected to the outlet component or the return pipe, water with a TDS value in the outlet pipe that does not meet the user's needs can be returned to the upstream end of the first water production unit and / or the second water production unit through the return pipe. When the TDS value of the mixed water in the outlet pipe meets the user's needs, the mixed water can flow out of the outlet component stably, avoiding the problem of unstable TDS value of the water purification equipment and improving the user experience.

[0016] Furthermore, by configuring the first TDS detection component to communicate with the regulating component, the regulating component can adjust the water flow rate of the first water source and / or the second water source into the outlet pipe based on the detection data of the first TDS detection component, thereby making the adjustment of the mixed water more accurate, faster, and more intelligent, and further improving the user experience.

[0017] Furthermore, by configuring the first TDS detection component to communicate with the first control valve and the second control valve, or configuring the first TDS detection component to communicate with the reversing valve, the outlet pipe can be selectively connected to the outlet component or the return pipe based on the detection data of the first TDS detection component. On the one hand, this avoids the problem of water waste caused by excessively long return time. On the other hand, it also avoids the problem of unstable outlet TDS value caused by excessively short return time. In addition, it enables the water purification equipment to automatically adjust the TDS value.

[0018] Furthermore, by connecting the second end of the return pipe to the upstream end of the reverse osmosis membrane filter element, on the one hand, when the first water source and the second water source are mixed to form mixed water, the mixed water that does not meet the user's needs can be returned to the upstream end of the reverse osmosis membrane filter element through the return pipe. On the other hand, when the reverse osmosis membrane filter element is not used for a long time, the water with a higher TDS at the pure water end of the reverse osmosis membrane filter element can be transported to the upstream end of the reverse osmosis membrane filter element, thus eliminating the need to install a pure water return pipe.

[0019] Furthermore, by setting the outlet of the first water purification unit to be connected to the inlet of the second water purification unit, the water filtered by the first water purification unit can be filtered again by the second water purification unit to produce pure water. This not only improves the quality of the pure water but also extends the service life of the reverse osmosis membrane filter element, further enhancing the user experience. Attached Figure Description

[0020] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0021] Figure 1 This is a connection diagram of a first embodiment of the water purification equipment of this utility model;

[0022] Figure 2 This is a connection diagram of Embodiment 2 of the water purification equipment of this utility model;

[0023] Figure 3 This is a connection diagram of Embodiment 3 of the water purification equipment of this utility model;

[0024] Figure 4 This is a connection diagram of Embodiment 4 of the water purification equipment of this utility model;

[0025] Figure 5 This is a connection diagram of Embodiment 5 of the water purification equipment of this utility model;

[0026] Figure 6 This is a connection diagram of Embodiment Six of the water purification equipment of this utility model.

[0027] List of reference numerals in the attached diagram:

[0028] 1. First water purification unit; 11. PP cotton filter element; 12. Activated carbon filter element; 2. Second water purification unit; 21. First wastewater pipe; 211. Wastewater solenoid valve; 22. Second wastewater pipe; 221. Fixed wastewater ratio; 222. Wastewater control valve; 23. Wastewater outlet; 24. Pure water return pipeline; 241. Pure water return valve; 242. Fifth check valve; 3. Outlet pipe; 31. First control valve; 32. Flow meter; 33. Ultraviolet sterilization component; 34. Outlet component; 35. First TDS detection component; 411. First flow regulating valve; 412. Second flow regulating valve; 42. Proportional adjustment 51. First outlet branch; 511. Third control valve; 512. Second check valve; 513. Pressure stabilizing valve; 52. Second outlet branch; 521. Third check valve; 522. Pressure tank interface; 523. High-pressure switch; 524. Fourth check valve; 525. Second TDS detection component; 6. Return pipe; 61. Second control valve; 62. First check valve; 7. Post-filter; 8. Reversing valve; 91. First inlet pipe; 911. First inlet valve; 92. Second inlet pipe; 921. Second inlet valve; 922. Booster pump; 923. Third TDS detection component; 10. Pressure tank. Detailed Implementation

[0029] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0030] It should be noted that in the description of this utility model, terms such as "upper" and "lower," which indicate direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In view of the problem mentioned in the background art that the existing water purification equipment has an unstable TDS value when adjusting the output water TDS value, which affects the user experience, this utility model provides a water purification equipment.

[0033] Specifically, such as Figures 1 to 6 As shown, the water purification equipment of this utility model includes a first water production unit 1, a second water production unit 2, a water outlet pipe 3, an adjustment component, a water outlet component 34, and a return pipe 6. The first water production unit 1 is used to prepare a first water source, and the second water production unit 2 is used to prepare a second water source. The TDS value of the first water source is greater than the TDS value of the second water source.

[0034] The outlet ends of the first water production unit 1 and the second water production unit 2 can both be connected to the outlet pipe 3 so that the first water source and the second water source can flow into the outlet pipe 3. The regulating component is configured to regulate the flow rate of the first water source and / or the second water source into the outlet pipe 3.

[0035] like Figures 1 to 6 As shown, the water outlet component 34 can be connected to the water outlet pipe 3 and is used to output the water in the water outlet pipe 3 for user use. The return pipe 6 can return the water in the water outlet pipe 3 to the upstream end of the first water production unit 1 and / or the second water production unit 2. The water outlet pipe 3 can be selectively connected to the water outlet component 34 or the return pipe 6.

[0036] With this setup, the first water source prepared by the first water production unit 1 and the second water source prepared by the second water production unit 2 can flow into the outlet pipe 3 for mixing. The regulating component can adjust the flow rate of the first and second water sources into the outlet pipe 3, making the TDS value of the outlet water adjustable to meet the needs of different users for different TDS values. By setting the outlet pipe 3 to be selectively connected to the outlet component 34 or the return pipe 6, water with a TDS value in the outlet pipe 3 that does not meet the user's needs can flow back to the upstream end of the first water production unit 1 and / or the second water production unit 2 through the return pipe 6. When the TDS value of the mixed water in the outlet pipe 3 meets the user's needs, the mixed water can flow out stably from the outlet component 34, avoiding the problem of unstable TDS value of the water purifier and greatly improving the user experience.

[0037] Since this utility model forms mixed water by mixing the first water source and the second water source, during the mixing process, the regulating component continuously adjusts the water flow rate of the first and second water sources into the outlet pipe, resulting in an unstable TDS value of the mixed water flowing out of the outlet pipe 3, which cannot meet the user's needs. Furthermore, if the second water production unit 2 is a reverse osmosis membrane filter, the reverse osmosis membrane filter will have a "high TDS value of the first cup water" when it is not used for a long time, all of which will lead to an unstable TDS value of the mixed water. By returning the mixed water with unstable TDS value to the upstream end of the first water production unit 1 and / or the second water production unit 2 through the return pipe 6, when the mixing is completed and the TDS value of the mixed water in the outlet pipe 3 is stable, the mixed water is then allowed to flow out from the outlet component 34.

[0038] It should be noted that, in practical applications, those skilled in the art can configure the water outlet component 34 as a water spout, or as a faucet, etc. Such adjustments and changes to the specific configuration of the water outlet component 34 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0039] For example, the water outlet component 34 is a water outlet nozzle.

[0040] It should be noted that this utility model does not limit the specific type of the regulating component. For example, the regulating component can be set as a flow regulating valve, or it can be set as a proportional regulating valve 42, etc. Such adjustments and changes to the specific type of the regulating component do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0041] In one specific embodiment, such as Figures 1 to 3 As shown, the water purification equipment also includes a first water outlet branch 51 and a second water outlet branch 52. The first water production unit 1 is connected to the water outlet pipe 3 through the first water outlet branch 51, and the second water production unit 2 is connected to the water outlet pipe 3 through the second water outlet branch 52. The regulating component is a flow regulating valve, which is installed on the first water outlet branch 51 and / or the second water outlet branch 52.

[0042] By adjusting the water flow rate in the first water outlet branch 51 and / or the water flow rate in the second water outlet branch 52, the water flow rate from the first water source and the second water source into the water outlet pipe 3 can be adjusted, thereby achieving adjustable TDS value of the effluent.

[0043] It should be noted that, in practical applications, those skilled in the art can set the flow regulating valve only on the first outlet branch 51, and the regulating component only regulates the flow rate of the first water source flowing into the outlet pipe 3; or, the flow regulating valve can be set only on the second outlet branch 52, and the regulating component only regulates the flow rate of the second water source flowing into the outlet pipe 3; or, the flow regulating valve can be set on both the first outlet branch 51 and the second outlet branch 52, and the regulating component simultaneously regulates the flow rate of both the first and second water sources flowing into the outlet pipe 3, and so on. Such adjustments and changes to the specific setting position of the flow regulating valve do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0044] For example, such as Figures 1 to 3 As shown, the first flow regulating valve 411 is installed on the first water outlet branch 51, and the second flow regulating valve 412 is installed on the second water outlet branch 52. The regulating components simultaneously regulate the flow rate of the first water source and the second water source into the water outlet pipe 3.

[0045] It should be noted that, in practical applications, those skilled in the art can set the flow regulating valve as a manual valve, or as a solenoid valve, etc. Such adjustments and changes to the specific setting type of the flow regulating valve do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0046] Preferably, the flow regulating valve is a solenoid valve.

[0047] In another specific embodiment, such as Figures 4 to 6 As shown, the regulating component is a proportional regulating valve 42, which has a first inlet, a second inlet, and an outlet. The outlet of the first water production unit 1 is connected to the first inlet, the outlet of the second water production unit 2 is connected to the second inlet, and the outlet is connected to the outlet pipe 3. The proportional regulating valve 42 can regulate the ratio of water flowing into the first inlet and the second inlet.

[0048] It should be noted that in practical applications, the water in the outlet pipe 3 can be continuously returned to the upstream end of the first water production unit 1 and / or the second water production unit 2 via the return pipe 6. After a first preset time, the water in the outlet pipe 3 can then flow out through the outlet component 34. The first preset time can be obtained based on experience or experimentation. Alternatively, a TDS detection component can be installed on the outlet pipe 3. When the TDS detection component detects that the TDS value in the outlet pipe 3 does not change within a second preset time, the water in the outlet pipe 3 can flow out through the outlet component 34. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0049] Preferably, such as Figures 1 to 6 As shown, the water purification equipment also includes a first TDS detection component 35, which is installed on the water outlet pipe 3 and is used to detect the TDS value of the mixed water after the first water source and the second water source are mixed.

[0050] By setting a first TDS detection component 35 on the water outlet pipe 3, the TDS value of the mixed water in the water outlet pipe 3 can be detected, and the adjustment of the water outlet TDS value can be more precise based on the detection data of the first TDS detection component 35, thereby further improving the user experience.

[0051] Preferably, the first TDS detection component 35 is communicatively connected to the adjustment component.

[0052] With this setup, the regulating component can adjust the flow rate of the first water source and / or the second water source into the outlet pipe 3 based on the detection data of the first TDS detection component 35, thereby making the regulation of the mixed water more accurate, faster, and smarter.

[0053] Specifically, when the first TDS detection component 35 detects that the TDS value of the mixed water in the outlet pipe 3 is not within the preset range, it transmits a signal to the regulating component to continue regulating the flow rate of the first water source and the second water source into the outlet pipe 3. When the first TDS detection component 35 detects that the TDS value of the mixed water in the outlet pipe 3 is within the preset range, it transmits a signal to the regulating component to stop regulating the flow rate of the first water source and the second water source into the outlet pipe 3. This enables intelligent regulation of the outlet TDS value and further improves the user experience.

[0054] It should be noted that, in practical applications, this utility model does not impose any restrictions on the specific connection method in which the water outlet pipe 3 can selectively connect with the water outlet component 34 or the return pipe 6, as long as the water in the water outlet pipe 3 can flow into the return pipe 6 or the water outlet component 34.

[0055] The following two embodiments will be described in detail.

[0056] Example 1:

[0057] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the water purification equipment of this utility model also includes a first control valve 31 and a second control valve 61. The first control valve 31 is installed on the water outlet pipe 3 and located at the downstream end of the return pipe 6, and the second control valve 61 is installed on the return pipe 6.

[0058] When the TDS value of the mixed water in the outlet pipe 3 is not within the preset range, the first control valve 31 is closed and the second control valve 61 is opened, so that the mixed water in the outlet pipe 3 flows back to the upstream end of the first water production unit 1 and / or the second water production unit 2 through the return pipe 6. When the TDS value of the mixed water in the outlet pipe 3 is within the preset range, the first control valve 31 is opened and the second control valve 61 is closed, so that the mixed water in the outlet pipe 3 flows out through the water outlet component 34 for user use.

[0059] It should be noted that, in practical applications, those skilled in the art can configure both the first control valve 31 and the second control valve 61 as manual valves, or both as solenoid valves, or one of the first control valve 31 and the second control valve 61 as a manual valve and the other as a solenoid valve, etc. Such adjustments and changes to the specific configuration types of the first control valve 31 and the second control valve 61 do not deviate from the principles and scope of this utility model and should be included within the protection scope of this utility model.

[0060] Preferably, both the first control valve 31 and the second control valve 61 are configured as solenoid valves.

[0061] Preferably, the first TDS detection component 35 is communicatively connected to the first control valve 31 and the second control valve 61.

[0062] When the TDS value of the mixed water in the outlet pipe 3 is not within the preset range, a signal is transmitted to the first control valve 31 and the second control valve 61. The first control valve 31 closes and the second control valve 61 opens. When the TDS value of the mixed water in the outlet pipe 3 is within the preset range, a signal is transmitted to the first control valve 31 and the second control valve 61, causing the first control valve 31 to open and the second control valve 61 to close.

[0063] Example 2:

[0064] like Figure 3 and Figure 6 As shown, the water purification equipment of this utility model also includes a reversing valve 8. The first port of the reversing valve 8 is connected to the water outlet pipe 3, the second port of the reversing valve 8 is connected to the water outlet component 34, and the third port of the reversing valve 8 is connected to the return pipe 6. The first port can be selectively connected to the second port or the third port.

[0065] When the TDS value of the mixed water in the outlet pipe 3 is not within the preset range, the first port of the reversing valve 8 is connected to the third port, so that the mixed water in the outlet pipe 3 flows back to the upstream end of the first water production unit 1 and / or the second water production unit 2 through the return pipe 6. When the TDS value of the mixed water in the outlet pipe 3 is within the preset range, the first port of the reversing valve 8 is connected to the second port, so that the mixed water in the outlet pipe 3 flows out through the water outlet component 34 for user use.

[0066] Preferably, the first TDS detection component 35 is communicatively connected to the reversing valve 8.

[0067] When the first TDS detection component 35 detects that the TDS value of the mixed water in the outlet pipe 3 is not within the preset range, it transmits a signal to the reversing valve 8, so that the first interface of the reversing valve 8 is connected to the third interface. When the first TDS detection component 35 detects that the TDS value of the mixed water in the outlet pipe 3 is within the preset range, it transmits a signal to the reversing valve 8, so that the first interface of the reversing valve 8 is connected to the second interface.

[0068] By configuring the first TDS detection component 35 to communicate with the first control valve 31 and the second control valve 61, or configuring the first TDS detection component 35 to communicate with the reversing valve 8, the outlet pipe 3 can be selectively connected to the outlet component 34 or the return pipe 6 based on the detection data of the first TDS detection component 35. On the one hand, this avoids the problem of water waste caused by excessively long return time. On the other hand, it also avoids the problem of unstable outlet TDS value caused by excessively short return time. In addition, it enables the water purification equipment to automatically adjust the TDS value.

[0069] It should be noted that this utility model does not limit the specific configuration type of the first water production unit 1. For example, the first water production unit 1 can be configured as a pre-filter unit, or it can be configured as a pre- and post-filter composite filter, etc. Such adjustments and changes to the specific configuration type of the first water production unit 1 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0070] Preferably, the first water production unit 1 is a pre-filtration unit.

[0071] Specifically, such as Figures 1 to 6 As shown, the first water production unit 1 is configured to include a PP cotton filter element 11 and an activated carbon filter element 12.

[0072] It should be noted that this utility model does not limit the specific configuration type of the second water production unit 2. For example, the second water production unit 2 can be configured as a reverse osmosis membrane filter element, or it can be configured as an ultrafiltration filter element, or it can be configured as any other possible form, etc. Such adjustments and changes to the specific configuration type of the second water production unit 2 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0073] Preferably, the second water production unit 2 is a reverse osmosis membrane filter element.

[0074] It should be noted that, in practical applications, those skilled in the art can configure the return pipe 6 to return the water in the outlet pipe 3 to the upstream end of the first water production unit 1, or the return pipe 6 to return the water in the outlet pipe 3 to the upstream end of the second water production unit 2, or the return pipe 6 to return the water in the outlet pipe 3 to the upstream end of the first water production unit 1 and the second water production unit 2, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should all be included within the protection scope of this utility model.

[0075] Preferably, such as Figures 1 to 6As shown, the second water production unit 2 is a reverse osmosis membrane filter element. The first end of the return pipe 6 is connected to the outlet pipe 3, and the second end of the return pipe 6 is connected to the upstream end of the reverse osmosis membrane filter element so as to transport the water from the pure water end of the reverse osmosis membrane filter element to the inlet end of the reverse osmosis membrane filter element.

[0076] With this setup, on the one hand, when the first water source and the second water source mix to form mixed water, the mixed water that does not meet the user's needs can be returned to the upstream end of the reverse osmosis membrane filter element through the return pipe 6. On the other hand, when the reverse osmosis membrane filter element is not used for a long time, the water with a higher TDS at the pure water end of the reverse osmosis membrane filter element can be transported to the upstream end of the reverse osmosis membrane filter element, thus eliminating the need to install a pure water return pipeline.

[0077] It should be noted that the method is not limited to transporting water from the pure water end of the reverse osmosis membrane filter element to the inlet end of the reverse osmosis membrane filter element through the return pipe 6. For example, a separate pure water return pipe 24 can be provided to transport water from the pure water end of the reverse osmosis membrane filter element to the inlet end of the reverse osmosis membrane filter element.

[0078] Specifically, such as Figure 2 and Figure 4 As shown, the water purification equipment of this utility model also includes a pure water return pipeline 24. One end of the pure water return pipeline 24 is connected to the second water outlet branch 52, and the other end of the pure water return pipeline 24 is connected to the upstream end of the reverse osmosis membrane filter element. A fifth one-way valve 242 and a pure water return valve 241 are provided on the pure water return pipeline 24. The pure water return valve 241 is used to control the opening and closing of the pure water return pipeline 24, and the fifth one-way valve 242 can prevent the water at the inlet end of the reverse osmosis membrane filter element from flowing back to the pure water end of the reverse osmosis membrane filter element.

[0079] When the reverse osmosis membrane filter cartridge is not used for a long time, water with a high TDS value at the pure water end of the reverse osmosis membrane filter cartridge can be transported to the inlet end of the reverse osmosis membrane filter cartridge through the pure water return pipeline 24, thus solving the problem of a high TDS value in the "first cup of water".

[0080] Preferably, such as Figures 1 to 6 As shown, the water purification equipment of this utility model also includes a first wastewater pipe 21 and a wastewater solenoid valve 211 installed on the first wastewater pipe 21. One end of the first wastewater pipe 21 is connected to the wastewater end of the reverse osmosis membrane filter element, and the other end of the first wastewater pipe 21 is connected to the wastewater outlet 23. The wastewater generated by the reverse osmosis membrane filter element can be discharged to the wastewater outlet 23 through the first wastewater pipe 21.

[0081] In addition, such as Figures 1 to 6 As shown, the water purification equipment also includes a second wastewater pipe 22, a fixed wastewater ratio 221 and a wastewater control valve 222 installed on the second wastewater pipe 22, wherein the second wastewater pipe 22 is connected in parallel with the first wastewater pipe 21.

[0082] With this setup, the wastewater solenoid valve 211 on the first wastewater pipe 21 can flexibly adjust the wastewater ratio according to the working status of the water purifier, water quality, or specific user needs. This balances water conservation and extending the lifespan of the reverse osmosis membrane filter. By setting a fixed wastewater ratio 221 on the second wastewater pipe 22, on the one hand, when the wastewater solenoid valve 211 malfunctions or the first wastewater pipe 21 becomes clogged, the filtered wastewater can flow out through the second wastewater pipe, preventing the normal operation of the water purification equipment from being affected by malfunctions of the wastewater solenoid valve 211 or clogs of the first wastewater pipe 21. On the other hand, it also allows switching between the adjustable wastewater ratio and the fixed wastewater ratio 221 according to water quality and user needs, further enhancing the user experience.

[0083] It should be noted that this utility model does not limit the specific connection method of the first water production unit 1 and the second water production unit 2. For example, the first water production unit 1 and the second water production unit 2 can be set up independently, or the water outlet of the first water production unit 1 can be connected to the water inlet of the first water outlet branch 51 and the second water production unit 2. The water filtered by the first water production unit 1 flows into the second water production unit 2 for secondary filtration. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0084] Preferably, such as Figures 1 to 6 As shown, the first water production unit 1 is a pre-filtration unit. The water outlet of the first water production unit 1 is connected to the water outlet pipe 3 through the first water outlet branch 51. The water outlet of the first water production unit 1 can also be connected to the water inlet of the second water production unit 2 through the second water inlet pipe 92, so that the second water production unit 2 can filter the first water source to produce the second water source.

[0085] With this setup, water filtered by the first water purification unit 1 can be further filtered by the second water purification unit 2 to produce pure water. This not only improves the quality of the pure water but also extends the service life of the reverse osmosis membrane filter element, further enhancing the user experience.

[0086] Specifically, such as Figures 1 to 6As shown, the water purification equipment also includes a first inlet pipe 91, on which a first inlet valve 911 is installed. The first inlet pipe 91 is connected to the inlet end of the first water production unit 1. The outlet end of the first water production unit 1 is connected to the outlet pipe 3 through a first outlet branch 51. The outlet end of the first water production unit 1 can also be connected to the inlet end of the second water production unit 2 through a second inlet pipe 92. A second inlet valve 921 is installed on the second inlet pipe 92. The outlet end of the second water production unit 2 is connected to the outlet pipe 3 through a second outlet branch 52. The wastewater end of the second water production unit 2 is connected to the wastewater outlet 23 through a first wastewater pipe 21 and / or a second wastewater pipe 22. The first inlet pipe 91 is equipped with a first inlet valve 911 and a booster pump 922. The second end of the return pipe 6 is connected to the upstream end of the booster pump 922.

[0087] During water production, when the first inlet valve 911 is opened, the water in the first inlet pipe 91 enters the first water production unit 1. The water filtered by the first water production unit 1 can be transported to the first outlet branch 51 and output through the outlet component 34. When the second inlet valve 921 is opened, the water filtered by the first water production unit 1 can also be transported to the inlet end of the second water production unit 2 through the second inlet pipe 92. The second water production unit 2 performs secondary filtration on the water filtered by the first water production unit 1 and outputs it from the first outlet branch 51.

[0088] It should be noted that the first water source in the first outlet branch 51 can also flow into the outlet pipe 3 first, and then flow back to the upstream end of the reverse osmosis membrane filter element through the return pipe 6.

[0089] Preferably, a third TDS detection component 923 is also provided on the first water inlet pipe 91, which is used to detect the TDS value in the first water inlet pipe 91.

[0090] Preferably, such as Figures 1 to 6 As shown, the water purification device of this utility model also includes a post-filter element 7, which is installed on the second water outlet branch 52 and is used to filter the water after it has been filtered by the second water purification unit 2.

[0091] By setting up the post-filter 7, residual chlorine in the second water source can be removed, improving the taste of the second water source and further enhancing the user experience.

[0092] Preferably, such as Figures 1 to 6 As shown, a third control valve 511 is also provided on the first water outlet branch 51. The third control valve 511 is used to control the opening and closing of the first water outlet branch 51.

[0093] When the user only uses pure water, the third control valve 511 is opened to prevent the first water source after being filtered by the first water production unit 1 from flowing into the water outlet pipe 3 from the first water outlet branch 51. This allows the first water source after being filtered by the first water production unit 1 to enter the second water production unit 2 and be filtered by the second water production unit 2 to produce pure water (i.e., the second water source). The pure water flows into the water outlet pipe 3 and flows out through the water outlet component 34.

[0094] Preferably, such as Figures 1 to 6 As shown, a first one-way valve 62 is provided on the return pipe 6. The first one-way valve 62 is used to prevent water from the first water production unit 1 and / or the second water production unit 2 from flowing back into the outlet pipe 3.

[0095] Preferably, such as Figures 1 to 6 As shown, a second check valve 512 is also provided on the first water outlet branch 51. The second check valve 512 is used to prevent water in the water outlet pipe 3 and / or the second water outlet branch 52 from flowing back into the first water outlet branch 51. A pressure stabilizing valve 513 is also provided on the first water outlet branch 51, so as to stabilize the water outlet pressure in the first water outlet branch 51.

[0096] Preferably, such as Figures 1 to 6 As shown, a third check valve 521 is also provided on the second water outlet branch 52. The third check valve 521 is used to prevent water in the water outlet pipe 3 and / or the first water outlet branch 51 from flowing back into the second water outlet branch 52.

[0097] Preferably, such as Figures 1 to 6 As shown, the second water outlet branch 52 is also equipped with a pressure tank interface 522 and a high-pressure switch 523. The pressure tank interface 522 is used to install the pressure tank 10, and the high-pressure switch 523 is used to detect the pressure in the second water outlet branch 52.

[0098] When the user needs to install the pressure tank 10, the pressure tank can be installed at the pressure tank interface 522, so that the second water source obtained by the reverse osmosis membrane filter element is stored in the pressure tank 10. When the user has a water demand, the water in the pressure tank 10 can be output for the user's use.

[0099] Of course, the pressure tank 10 can be omitted, and the second water source obtained by the reverse osmosis membrane filter can be output directly through the second water outlet branch 52, the water outlet pipe 3, and the water outlet component 34.

[0100] Preferably, such as Figures 1 to 6 As shown, a fourth one-way valve 524 is also provided on the second water outlet branch 52. The fourth one-way valve 524 is located between the reverse osmosis membrane filter element and the pressure tank interface 522 and is used to prevent water in the pressure tank 10 from flowing back to the pure water end of the reverse osmosis membrane filter element.

[0101] Preferably, such as Figures 1 to 6As shown, a second TDS detection component 525 is also provided on the second water outlet branch 52. The second TDS detection component 525 is used to detect the TDS value of the water in the second water outlet branch 52.

[0102] It should be noted that those skilled in the art do not impose any limitations on the specific location of the second TDS detection component 525 on the second water outlet branch 52, as long as it can detect the TDS value within the second water outlet branch 52. For example, the second TDS detection component 525 can be located upstream of the pressure tank interface 522, or it can be located downstream of the pressure tank interface 522, etc. Such adjustments and changes to the specific location of the second TDS detection component 525 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0103] Preferably, the second TDS detection component 525 is disposed at the downstream end of the pressure tank interface 522.

[0104] Preferably, such as Figures 1 to 6 As shown, a flow meter 32 is also installed on the water outlet pipe 3. The flow meter 32 is used to detect the flow rate of water flowing out of the water outlet pipe 3.

[0105] It should be noted that in practical applications, the flow meter 32 can be set at the upstream end of the return pipe 6, or it can be set at the downstream end of the return pipe 6, etc. Such adjustments and changes to the specific setting positions of the flow meter 32 and the return pipe 6 do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0106] Preferably, the flow meter 32 is located at the downstream end of the return pipe 6, so that the flow rate of water flowing out of the water pipe 3 through the water outlet component 34 can be detected more accurately.

[0107] Preferably, such as Figures 1 to 6 As shown, an ultraviolet sterilization component 33 is also provided on the water outlet pipe 3. The ultraviolet sterilization component 33 is used to sterilize the water in the water outlet pipe 3.

[0108] It should be noted that, in practical applications, this utility model does not impose any limitations on the specific placement of the ultraviolet sterilization component 33 on the water outlet pipe 3. For example, the ultraviolet sterilization component 33 can be placed at the upstream end of the return pipe 6, or it can be placed at the downstream end of the return pipe 6, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0109] Preferably, the ultraviolet sterilization component 33 is located at the downstream end of the return pipe 6. In this way, only the water flowing out of the outlet pipe 3 through the outlet component 34 can be sterilized, thereby extending the service life of the ultraviolet sterilization component 33.

[0110] It should also be noted that the ultraviolet sterilization component 33 can be set at the upstream end of the first control valve 31 (or the reversing valve 8), or it can be set at the downstream end of the first control valve 31 (or the reversing valve 8), etc. Such adjustments and changes to the specific setting positions of the ultraviolet sterilization component 33 and the first control valve 31 (or the reversing valve 8) do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0111] For example, the ultraviolet sterilization component 33 is disposed upstream of the first control valve 31 (or reversing valve 8).

[0112] The specific working modes of the water purification equipment of this utility model will be introduced below in conjunction with the following scenarios.

[0113] Scenario 1: Water purification mode

[0114] (1) As Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the first inlet valve 911, the third control valve 511, and the first control valve 31 are opened, and the second inlet valve 921 and the second control valve 61 are closed. The water in the first inlet pipe 91 flows into the first water production unit 1. The water filtered by the first water production unit 1 flows into the outlet pipe 3 through the first outlet branch 51, and then is output through the outlet component 34 for users to use as purified water.

[0115] (2) Figure 3 and Figure 6 As shown, the first inlet valve 911 and the third control valve 511 are opened, the second inlet valve 921 is closed, and the first interface of the reversing valve 8 is connected to the second interface. The water in the first inlet pipe 91 flows into the first water production unit 1. The water filtered by the first water production unit 1 flows into the outlet pipe 3 through the first outlet branch 51, and then is output through the outlet component 34 for users to take clean water.

[0116] Scenario 2: Pure water mode

[0117] (1) As Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the first inlet valve 911, the second inlet valve 921, and the first control valve 31 are opened, while the second control valve 61 and the third control valve 511 are closed. Water in the first inlet pipe 91 flows into the first water production unit 1. The purified water after being filtered by the first water production unit 1 enters the second water production unit 2 through the second inlet pipe 92. After being filtered a second time by the second water production unit 2, pure water is obtained. The pure water flows into the outlet pipe 3 through the second outlet branch 52 and is then output through the outlet component 34 for users to use.

[0118] (2) Figure 3 and Figure 6 As shown, the first inlet valve 911 and the second inlet valve 921 are opened, the third control valve 511 is closed, and the first interface of the reversing valve 8 is connected to the second interface. The water in the first inlet pipe 91 flows into the first water production unit 1. The purified water after being filtered by the first water production unit 1 enters the second water production unit 2 through the second inlet pipe 92. After being filtered a second time by the second water production unit 2, pure water is produced. The pure water flows into the outlet pipe 3 through the second outlet branch 52 and is then output through the outlet component 34 for users to use.

[0119] Scenario 3: Mixed water mode

[0120] (1) As Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the first inlet valve 911, the second inlet valve 921, the third control valve 511, and the second control valve 61 are opened, and the first control valve 31 is closed. Water in the first inlet pipe 91 flows into the first water production unit 1. After being filtered by the first water production unit 1, the first water source is divided into two paths. One path of the first water source is transported to the outlet pipe 3 through the first outlet branch 51, and the other path of the first water source enters the second water production unit 2 through the second inlet pipe 92. After being filtered by the second water production unit 2, the second water source is transported to the outlet pipe 3 through the second outlet branch 52. The regulating component can regulate the flow rate of the first water source in the first outlet branch 51 or the second water source in the second outlet branch 52 into the outlet pipe 3 to form mixed water. Since the TDS value of the mixed water is unstable during the adjustment process, the mixed water flows back to the upstream end of the second water production unit 2 through the return pipe 6. With the adjustment of the regulating component, the TDS value of the mixed water gradually approaches the preset TDS value range set by the user.

[0121] When the TDS value of the mixed water is detected to meet the preset TDS value range, the second control valve 61 is closed and the first control valve 31 is opened, so that the mixed water that meets the user's needs flows out stably from the water outlet component 34 for the user's use.

[0122] (2) Figure 3 and Figure 6As shown, the first inlet valve 911, the second inlet valve 921, and the third control valve 511 are opened, and the first and third interfaces of the reversing valve 8 are connected. Water in the first inlet pipe 91 flows into the first water production unit 1. The first water source after being filtered by the first water production unit 1 is divided into two paths. One path of the first water source is transported to the outlet pipe 3 through the first outlet branch 51, and the other path of the first water source enters the second water production unit 2 through the second inlet pipe 92. The second water source after being filtered by the second water production unit 2 is transported to the outlet pipe 3 through the second outlet branch 52. The regulating component can regulate the flow rate of the first water source in the first outlet branch 51 or the second water source in the second outlet branch 52 into the outlet pipe 3 to form mixed water. Since the TDS value of the mixed water is unstable during the adjustment process, the mixed water flows back to the upstream end of the second water production unit 2 through the return pipe 6. With the adjustment of the regulating component, the TDS value of the mixed water gradually approaches the preset TDS value range set by the user.

[0123] When the TDS value of the mixed water is detected to meet the preset TDS value range, the first port of the reversing valve 8 is connected to the second port, so that the mixed water that meets the user's needs flows out stably from the water outlet component 34 for the user's use.

[0124] It should be noted that, in the above situations, when the purified water, pure water or mixed water mode is being used, the ultraviolet sterilization component 33 can also be turned on to sterilize the purified water, pure water or mixed water with ultraviolet light, and the sterilized purified water, pure water or mixed water can be output through the water outlet component 34.

[0125] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A water purification device, characterized in that, The water purification equipment includes: The first water production unit (1) is used to prepare the first water source; The second water production unit (2) is used to produce a second water source, wherein the TDS value of the first water source is greater than the TDS value of the second water source. The water outlet pipe (3) is connected to the water outlet end of the first water production unit (1) and the water outlet end of the second water production unit (2) so that the first water source and the second water source can flow into the water outlet pipe (3). An adjusting component is configured to adjust the flow rate of water flowing from the first water source and / or the second water source into the outlet pipe (3); A water outlet component (34) that is connected to the water outlet pipe (3) and is used to output water from the water outlet pipe (3) for user use; and A return pipe (6) is provided that can return the water in the outlet pipe (3) to the upstream end of the first water production unit (1) and / or the second water production unit (2); The outlet pipe (3) can be selectively connected to the outlet component (34) or the return pipe (6).

2. The water purification equipment according to claim 1, characterized in that, The water purification equipment also includes a first water outlet branch (51) and a second water outlet branch (52). The first water production unit (1) is connected to the water outlet pipe (3) through the first water outlet branch (51), and the second water production unit (2) is connected to the water outlet pipe (3) through the second water outlet branch (52). The regulating component is a flow regulating valve, which is installed on the first water outlet branch (51) and / or the second water outlet branch (52).

3. The water purification equipment according to claim 1, characterized in that, The regulating component is a proportional regulating valve (42), which has a first inlet, a second inlet and an outlet. The outlet of the first water production unit (1) is connected to the first inlet, the outlet of the second water production unit (2) is connected to the second inlet, and the outlet is connected to the outlet pipe (3). The proportional regulating valve (42) can regulate the ratio of water flowing into the first inlet and the second inlet.

4. The water purification equipment according to any one of claims 1 to 3, characterized in that, The water purification equipment also includes a first TDS detection component (35), which is installed on the outlet pipe (3) and is used to detect the TDS value of the mixed water after the first water source and the second water source are mixed.

5. The water purification equipment according to claim 4, characterized in that, The first TDS detection component (35) is communicatively connected to the adjustment component.

6. The water purification equipment according to claim 4, characterized in that, The water purification equipment also includes a first control valve (31) and a second control valve (61). The first control valve (31) is installed on the outlet pipe (3) and located at the downstream end of the return pipe (6). The second control valve (61) is installed on the return pipe (6). Alternatively, the water purification equipment may further include a reversing valve (8), the first port of which is connected to the outlet pipe (3), the second port of which is connected to the outlet component (34), and the third port of which is connected to the return pipe (6). The first port may be selectively connected to the second port or the third port.

7. The water purification equipment according to claim 6, characterized in that, The first TDS detection component (35) is communicatively connected to the first control valve (31) and the second control valve (61); Alternatively, the first TDS detection component (35) is communicatively connected to the reversing valve (8).

8. The water purification equipment according to claim 1, characterized in that, The second water production unit (2) is a reverse osmosis membrane filter element. The first end of the return pipe (6) is connected to the outlet pipe (3), and the second end of the return pipe (6) is connected to the upstream end of the reverse osmosis membrane filter element, so as to transport the water from the pure water end of the reverse osmosis membrane filter element to the inlet end of the reverse osmosis membrane filter element.

9. The water purification equipment according to claim 8, characterized in that, The first water production unit (1) is a pre-filter unit. The water outlet of the first water production unit (1) is connected to the water outlet pipe (3) through the first water outlet branch (51). The water outlet of the first water production unit (1) can also be connected to the second water production unit (2) through the second water inlet pipe (92) so that the second water production unit (2) can filter the first water source to obtain the second water source.

10. The water purification equipment according to claim 1, characterized in that, The return pipe (6) is provided with a first one-way valve (62), which is used to prevent water from the upstream end of the first water production unit (1) and / or the second water production unit (2) from flowing back into the outlet pipe (3).

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