Water purification equipment
By introducing scale inhibitor components and backflow flushing components into the water purification equipment, the problem of scale inhibitor penetrating to the purified water side is solved, thereby improving the quality of purified water and enhancing the user experience.
Patent Information
- Application Number
- CN202423123430.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-17
AI Technical Summary
In existing water purification equipment, after water production stops, scale inhibitors can seep into the purified water side of the filter element, causing the purified water quality to decrease when water production is restarted, thus affecting the user experience.
The design incorporates scale inhibitor components and a backflow flushing component. By flushing the reverse osmosis component after the water purification equipment stops producing water, the content of scale inhibitor on the pure water side is reduced, thereby improving the quality of purified water.
When the water purification equipment restarts water production, the amount of scale inhibitor on the pure water side is reduced, which improves the quality of purified water and enhances the user experience.
Smart Images
Figure CN223780091U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water purification equipment technical field, specifically provide a water purification equipment. BACKGROUND
[0002] Water purification equipment is used for the water quality carries out the depth filtration, the water treatment equipment of purification treatment, the kitchen under water purifier, table type pure drinking machine and central water purifier etc. of commonly used have improved people's life quality.
[0003] Water purification equipment is mostly through filter core to the raw water filtration, forms the water that meets the user requirement, in the area of poor water quality, since the filter core is easy to scale, usually increase the scale inhibitor in the waterway system, to prolong the service life of filter core. But along with the water making time of water purification equipment stoppage extension, scale inhibitor can gradually permeate to the water purification side of filter core, in the time after water purification equipment restarts water making, the water that is handled after filter core contains scale inhibitor, leads to the water quality of water purification to reduce, influences user experience.
[0004] Correspondingly, the prior art needs a new water purification equipment to solve the above problems. UTILITY MODEL CONTENT
[0005] The utility model aims at solving above-mentioned technical problem, that is, solve the problem that along with the water making time of water purification equipment stoppage extension, scale inhibitor can gradually permeate to the water purification side of filter core, in the time after water purification equipment restarts water making, the water that is handled after filter core contains scale inhibitor, leads to the water quality of water purification to reduce, influences user experience.
[0006] The first aspect, the utility model provides a water purification equipment, the water purification equipment includes main pipe line, prefilter, scale inhibition component, reverse osmosis component, backflow flushing component, water pump, pure water pipe and postfilter, be equipped with water inlet, pure water outlet and waste water outlet on the reverse osmosis component, the main pipe line is linked with water inlet, prefilter and water pump are sequentially connected on the main pipe line, pure water pipe is linked with pure water outlet, postfilter is located on pure water pipe,
[0007] Scale inhibition component is parallelly connected with the main pipe line, for adding scale inhibitor to the main pipe line,
[0008] Backflow flushing component is communicated between pure water pipe and the water inlet end of water pump, opens backflow flushing component, and water pump can supply pure water and raw water into reverse osmosis component, and flushes reverse osmosis component.
[0009] In the preferred technical scheme of the above water purification equipment, scale inhibition component is located between the water outlet end of water pump and reverse osmosis component, for adding scale inhibitor into reverse osmosis component.
[0010] In the preferred embodiment of the above-mentioned water purification equipment, the reflux flushing assembly includes a reflux pipe and a reflux valve disposed on the reflux pipe. The inlet end of the reflux pipe is connected to the pure water pipe, and the outlet end of the reflux pipe is located upstream of the water pump. The reflux valve is used to control the opening and closing of the reflux pipe.
[0011] In the preferred embodiment of the above-mentioned water purification equipment, the backflow flushing assembly further includes a backflow check valve, which only allows water to flow from the pure water pipe to the water pump; and / or
[0012] The pure water pipe is equipped with a pure water one-way valve, which only allows water to flow from the reverse osmosis component to the outlet end of the pure water pipe and the reflux flushing component.
[0013] In the preferred technical solution of the above-mentioned water purification equipment, the scale inhibition component includes a scale inhibition pipe, a scale inhibition valve disposed on the scale inhibition pipe, and a scale inhibition module. The scale inhibition pipe is connected in parallel to the main pipeline. When the scale inhibition valve is opened, the scale inhibition module can add scale inhibitor to the raw water flowing through the scale inhibition pipe.
[0014] In the preferred technical solution of the above-mentioned water purification equipment, a TDS probe is provided on the main pipeline between the pre-filter and the water pump, and the TDS probe is used to detect the TDS value in the water;
[0015] The water purification equipment also includes a control module for controlling the scale inhibition valve, and the TDS probe is electrically connected to the control module.
[0016] In the preferred technical solution of the above-mentioned water purification equipment, an inlet valve is provided on the main pipeline between the pre-filter and the TDS probe;
[0017] The water purification equipment also includes a domestic water pipe, the inlet of which is located on the main pipeline and between the pre-filter and the inlet valve.
[0018] In the preferred technical solution of the above-mentioned water purification equipment, the scale inhibition component further includes a scale inhibition check valve, which only allows water to flow from the scale inhibition module to the reverse osmosis component.
[0019] In the preferred embodiment of the above-mentioned water purification equipment, the scale inhibitor component is located upstream of the water pump and is used to add scale inhibitor to the water pump and the reverse osmosis component.
[0020] In the preferred embodiment of the above-mentioned water purification equipment, the inlet end of the scale inhibitor component is located upstream of the water pump, and the outlet end of the scale inhibitor component is located between the outlet end of the water pump and the reverse osmosis component, for adding scale inhibitor into the reverse osmosis component.
[0021] When using the above technical solution, during water purification, the reflux flushing component is closed, the water pump is started, and raw water is supplied to the pre-filter for filtration. Then, the scale inhibitor module adds scale inhibitor to the raw water before supplying it to the reverse osmosis component. The reverse osmosis component separates the raw water into pure water and concentrated water. The concentrated water flows out through the wastewater outlet, and the pure water flows out through the pure water pipe. After passing through the post-filter, it is supplied to the user. After the user finishes using the pure water, the scale inhibitor module is closed, the reflux flushing component is opened, and the water pump is started. Raw water is supplied to the reverse osmosis component through the main pipeline and separated into pure water and concentrated water. The pure water returns to the main pipeline through the reflux flushing component, mixes with the raw water in the main pipeline, and the scale inhibitor content is reduced. The mixed pure water and raw water are then supplied to the reverse osmosis component by the water pump to flush the reverse osmosis component, which can reduce the scale inhibitor content in the reverse osmosis component. This reduces the amount of scale inhibitor that permeates to the pure water side when the water purification equipment stops producing water. When the water purification equipment restarts producing water, the scale inhibitor content in the pure water treated by the reverse osmosis component is lower, thereby improving the pure water quality and enhancing the user experience. Attached Figure Description
[0022] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:
[0023] Figure 1 This is a system diagram of the water purification equipment of this utility model;
[0024] Figure 2 This is a system diagram of another embodiment of the water purification equipment of this utility model;
[0025] Figure 3 This is a system diagram of another embodiment of the water purification equipment of this utility model;
[0026] Figure label:
[0027] 1. Main pipe; 2. Water pump; 31. Antiscaling pipe; 32. Antiscaling valve; 33. Antiscaling module; 34. Antiscaling check valve; 4. Reverse osmosis assembly; 51. Return pipe; 52. Return valve; 53. Return check valve; 6. Pure water pipe; 7. Pure water check valve; 8. Wastewater pipe; 9. Wastewater valve; 10. Inlet valve; 11. TDS probe; 12. Pre-filter; 13. Post-filter; 14. Domestic water pipe. Detailed Implementation
[0028] 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. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.
[0029] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," and "right," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] To address the issue that as the water purification equipment stops producing water for an extended period, scale inhibitors gradually seep into the purified water side of the filter element. This results in the purified water containing scale inhibitors after the equipment restarts, leading to a decrease in water quality and negatively impacting the user experience.
[0032] like Figures 1 to 3 As shown, this embodiment discloses a water purification device, which includes a main pipeline 1, a pre-filter 12, an inlet valve 10, a TDS probe 11, a water pump 2, a scale inhibitor assembly, a reverse osmosis assembly 4, a reflux flushing assembly, a pure water pipe 6, a wastewater pipe 8, a post-filter 13, and a domestic water pipe 14. The pre-filter 12, the inlet valve 10, the TDS probe 11, and the water pump 2 are sequentially connected in series on the main pipeline 1. One end of the main pipeline 1 is connected to a tap water pipe, and the other end is connected to the reverse osmosis assembly 4. A scale inhibitor module 33 is connected in parallel on the main pipeline 1 and is located upstream of the water pump 2 or between the outlet of the water pump 2 and the reverse osmosis assembly 4. The scale inhibitor module 33 can add scale inhibitor to the water to reduce the possibility of scale formation in the reverse osmosis assembly 4.
[0033] The pre-filter 12 can perform preliminary filtration of raw water. The TDS probe 11 can detect the TDS (Total Dissolved Fixed Intake) value of the water after filtration by the pre-filter 12. The scale inhibitor component can be adjusted according to the TDS value to determine whether scale inhibitor needs to be added to the water. If the TDS value is less than or equal to the set value, it indicates that the water quality is good and no scale inhibitor needs to be added. The scale inhibitor component is closed, which can reduce the amount of scale inhibitor used. If the TDS value is greater than the set value, it indicates that the water quality is poor. The scale inhibitor component is opened, and scale inhibitor is added to the water to reduce the possibility of scaling in the reverse osmosis component 4. The set value can be set manually, such as 100.
[0034] like Figures 1 to 3 As shown, the reverse osmosis assembly 4 includes a housing and a reverse osmosis membrane element installed inside the housing. The housing is equipped with an inlet, a pure water outlet, and a wastewater outlet. The main pipeline 1 is connected to the inlet. One end of the pure water pipe 6 is connected to the pure water outlet, and the other end of the pure water pipe 6 is connected to a pure water faucet. A pure water one-way valve 7 and a post-filter cartridge 13 are sequentially installed on the pure water pipe 6. The wastewater pipe 8 is connected to the wastewater outlet, and a wastewater valve 9 is installed on the wastewater pipe 8 to control the opening of the wastewater pipe 8. The raw water in the tap water pipe is filtered by the pre-filter cartridge 12 and then supplied into the housing through the inlet under the action of the water pump 2. The reverse osmosis membrane element separates the water into pure water and concentrated water. The concentrated water is discharged through the wastewater pipe 8, and the pure water flows into the post-filter cartridge 13 through the pure water one-way valve 7. After being filtered by the post-filter cartridge 13, the pure water flows out from the pure water faucet and can be directly consumed by the user.
[0035] like Figures 1 to 3 As shown, the reflux flushing assembly includes a reflux pipe 51, a reflux valve 52 and a reflux check valve 53 mounted on the reflux pipe 51. The inlet end of the reflux pipe 51 is connected to the pure water pipe 6 and is located between the pure water check valve 7 and the post-filter cartridge 13. The outlet end of the reflux pipe 51 is connected to the main pipeline 1 and is located between the TDS probe 11 and the inlet end of the water pump 2. The reflux valve 52 controls the opening and closing of the reflux pipe 51. The reflux check valve 53 allows water to flow unidirectionally from the pure water pipe 6 to the water pump 2. When the water purification equipment is producing water, the reflux valve 52 is closed, allowing pure water to flow out through the post-filter cartridge 13 and the pure water faucet.
[0036] When the water purification equipment stops producing water, the scale inhibitor component shuts off, the reflux valve 52 opens, and the water pump 2 starts. Raw water is separated into pure water and concentrated water by the reverse osmosis membrane element. The pure water returns to the main pipeline 1 via the reflux flushing component, mixing with the water in the main pipeline 1, thus reducing the scale inhibitor content. The mixed pure water and raw water are then supplied to the reverse osmosis component 4 by the water pump 2 to flush the component, further reducing the scale inhibitor content within it. Therefore, when the water purification equipment stops producing water, the amount of scale inhibitor permeating to the pure water side is reduced. When the water purification equipment restarts, the pure water treated by the reverse osmosis component 4 has a lower scale inhibitor content, thereby improving the pure water quality and enhancing the user experience.
[0037] like Figures 1 to 3As shown, the scale inhibition assembly includes a scale inhibition pipe 31, a scale inhibition valve 32 installed on the scale inhibition pipe 31, a scale inhibition module 33, and a scale inhibition check valve 34. The scale inhibition pipe 31 is connected in parallel to the main pipeline 1. When the scale inhibition valve 32 is opened, water in the main pipeline 1 flows through the scale inhibition pipe 31 and then into the main pipeline 1. During the flow of water through the scale inhibition pipe 31, the scale inhibition module 33 can add scale inhibitor to the water, thereby allowing the scale inhibitor to enter the main pipeline 1 and reducing the possibility of scaling on the reverse osmosis membrane element. The scale inhibition check valve 34 is used to ensure one-way flow of water from the scale inhibition module 33 to the reverse osmosis element, thereby reducing the possibility of the scale inhibition module 33 adding scale inhibitor to the water when flushing the reverse osmosis membrane element.
[0038] The water purification equipment also includes a control module, with the scale inhibitor valve 32, reflux valve 52, and TDS probe 11 all electrically connected to the control module. When the water purification equipment is producing pure water, the control module controls the reflux valve 52 to close, and can also control the scale inhibitor valve 32 to open or close based on the received TDS value; when the water purification equipment stops producing pure water, the control module controls the scale inhibitor valve 32 to close and the reflux valve 52 to open; when the entire machine needs to be flushed, the control module controls the reflux valve 52 to close and the scale inhibitor valve 32 to open.
[0039] like Figure 1 As shown, the scale-inhibiting pipe 31 is connected in parallel on the main pipeline 1, with its inlet located between the pre-filter 12 and the inlet valve 10, and its outlet located between the TDS probe 11 and the water pump 2. When the water purifier produces pure water, the control module controls the reflux valve 52 to close, the inlet valve 10 to open, and the water pump 2 to start. The raw water in the tap water pipe is filtered by the pre-filter 12 and flows through the inlet valve 10 and the TDS probe 11. The scale-inhibiting valve 32 is controlled according to the TDS value detected by the TDS probe 11. When the TDS value is less than or equal to the set value, the control module controls the scale-inhibiting valve 32 to close. The water passing through the TDS probe 11 is supplied into the housing through the main pipeline 1 by the water pump 2. The reverse osmosis membrane element separates the water into pure water and concentrated water. The concentrated water is discharged through the wastewater pipe 8, and the pure water flows into the post-filter 13 through the pure water check valve 7. After being filtered by the post-filter 13, the pure water flows out from the pure water tap for user use.
[0040] When the TDS value exceeds the set value, the control module opens the scale inhibition valve 32. Water, after being filtered by the pre-filter 12, is divided into two streams. One stream flows from the main pipe 1 through the inlet valve 10 and the TDS probe 11 into the water pump 2. The other stream flows from the scale inhibition pipe 31 through the scale inhibition valve 32, the scale inhibition module 33, and the scale inhibition check valve 34 before returning to the main pipe 1. During the flow of water through the scale inhibition pipe 31, the scale inhibition module 33 adds scale inhibitor to the water. The water containing the scale inhibitor mixes with the water in the main pipe 1 and flows into the water pump 2. The water pump 2 supplies water into the housing, where the reverse osmosis membrane element separates the water into pure water and concentrated water. The concentrated water is discharged through the wastewater pipe 8, while the pure water flows through the pure water check valve 7 into the post-filter 13. After being filtered by the post-filter 13, the pure water flows out from the pure water faucet for user use. Because the water containing the scale inhibitor has a lower scale inhibitor content after passing through the reverse osmosis membrane element, its impact on water quality is minimal.
[0041] When the water purification equipment stops producing pure water, the control module closes the antiscaling valve 32 and opens the return valve 52. At this time, regardless of the TDS value, the antiscaling valve 32 remains closed. The water pump 2 is started. Raw water from the tap water pipe, after being filtered by the pre-filter 12, flows directly into the housing through the inlet valve 10, TDS probe 11, and water pump 2. The reverse osmosis membrane element separates the water into pure water and concentrated water. The concentrated water is discharged through the wastewater pipe 8. The pure water returns to the main pipeline 1 through the pure water pipe 6 and the return pipe 51. After mixing with the water in the main pipeline 1, the antiscalant content decreases. The mixed water is then pumped back into the housing by water pump 2 to flush the reverse osmosis membrane element, further reducing the antiscalant content within it. Therefore, when the water purification equipment stops producing pure water, the amount of antiscalant permeating to the pure water side is reduced. When the water purification equipment restarts producing pure water, the antiscalant content in the pure water treated by the reverse osmosis membrane element is lower, thus improving the pure water quality and enhancing the user experience.
[0042] When the entire unit needs to be flushed, close the reflux valve 52, open the inlet valve 10 and the scale inhibitor valve 32, and start the water pump 2. The raw water in the tap water pipe is filtered by the pre-filter 12 and then split into two paths. One path flows from the main pipe 1 through the inlet valve 10 and the TDS probe 11 into the water pump 2. The other path flows from the scale inhibitor pipe 31 through the scale inhibitor valve 32, the scale inhibitor module 33, and the scale inhibitor check valve 34 before converging into the main pipe 1. During the flow of water through the scale inhibitor pipe 31, the scale inhibitor module 33 adds scale inhibitor to the water. The water containing the scale inhibitor mixes with the water in the main pipe 1 and flows into the water pump 2. The water pump 2 supplies water into the housing to flush and protect the reverse osmosis membrane elements. Before restarting the pure water production process after flushing the entire water purifier, run the program that was used after the pure water production process was stopped. The reverse osmosis membrane elements are flushed through the reflux flushing component to reduce the scale inhibitor content before restarting the pure water production process.
[0043] like Figure 2As shown, the scale inhibitor pipe 31 is connected in parallel on the main pipeline 1 and is located between the water pump 2 and the reverse osmosis assembly 4. When the water purification equipment produces pure water, the reflux valve 52 is closed, the inlet valve 10 is opened, and the water pump 2 is started. The raw water in the tap water pipe is filtered by the pre-filter cartridge 12 and then flows through the inlet valve 10 and the TDS probe 11. The scale inhibitor valve 32 is controlled according to the TDS value detected by the TDS probe 11. When the TDS value is less than or equal to the set value, the control module controls the scale inhibitor valve 32 to close. The water passing through the TDS probe 11 is directly supplied into the housing through the main pipeline 1 under the action of the water pump 2. The reverse osmosis membrane element separates the water into pure water and concentrated water. The concentrated water is discharged through the wastewater pipe 8, and the pure water flows into the post-filter cartridge 13 through the pure water check valve 7. After being filtered by the post-filter cartridge 13, the pure water flows out from the pure water tap for user use. When the TDS value exceeds the set value, the control module opens the scale inhibitor valve 32. After passing through the water pump 2, the water is divided into two streams: one flows through the main pipe 1, and the other flows from the scale inhibitor pipe 31 through the scale inhibitor valve 32, the scale inhibitor module 33, and the scale inhibitor check valve 34 before merging back into the main pipe 1. During the flow of water through the scale inhibitor pipe 31, the scale inhibitor module 33 adds scale inhibitor to the water. The two streams of water are then mixed and supplied to the housing. The reverse osmosis membrane element separates the water into pure water and concentrated water. The concentrated water is discharged through the wastewater pipe 8, while the pure water flows through the pure water check valve 7 into the post-filter cartridge 13. After being filtered by the post-filter cartridge 13, the pure water flows out from the pure water faucet for user use. After the water containing scale inhibitor passes through the reverse osmosis membrane element, the scale inhibitor content in the pure water is low, resulting in minimal impact on water quality.
[0044] When the water purification equipment stops producing pure water, the control module closes the scale inhibitor valve 32 and opens the return valve 52. At this time, the scale inhibitor valve 32 remains closed regardless of the TDS value. The water pump 2 is started. Raw water from the tap water pipe, after being filtered by the pre-filter cartridge 12, flows directly into the housing through the inlet valve 10, TDS probe 11, and water pump 2. The reverse osmosis membrane element separates the water into pure water and concentrated water. The concentrated water is discharged through the wastewater pipe 8. The pure water returns to the main pipeline 1 through the pure water pipe 6 and the return pipe 51. After mixing with the water in the main pipeline 1, the scale inhibitor content decreases. The mixed water is then pumped back into the housing by water pump 2 to flush the reverse osmosis membrane element, thereby reducing the scale inhibitor content within the membrane element. Therefore, when the water purification equipment stops producing pure water, the amount of scale inhibitor that permeates from the concentrated water side to the pure water side of the reverse osmosis membrane element can be reduced. When the water purification equipment restarts producing pure water, the scale inhibitor content in the pure water treated by the reverse osmosis membrane element is lower, which can improve the pure water quality and enhance the user experience.
[0045] Furthermore, since the scale inhibitor pipe 31 is connected in parallel on the main pipeline 1, and both its inlet and outlet ends are located between the water pump 2 and the reverse osmosis component 4, the scale inhibitor added to the water by the scale inhibitor module 33 only flows through the portion of the main pipeline 1 downstream of the outlet end of the scale inhibitor pipe 31 before entering the reverse osmosis component. When the water purification equipment stops producing pure water, compared to the installation configuration where the inlet end of the scale inhibitor pipe 31 is located between the pre-filter cartridge 12 and the inlet valve 10, and the outlet end is located between the TDS probe 11 and the water pump 2, less scale inhibitor remains in the main pipeline. Therefore, when the reverse osmosis membrane element is flushed by the water pump and the reflux flushing component, and the raw water and pure water are mixed, the amount of scale inhibitor entering the reverse osmosis membrane element is reduced. This allows for a reduction in the number of flushing cycles, saving water resources and reducing water pump energy consumption.
[0046] When the entire unit needs to be flushed, close the reflux valve 52, open the inlet valve 10 and the scale inhibitor valve 32, and start the water pump 2. The raw water in the tap water pipe, after being filtered by the pre-filter cartridge 12, flows through the inlet valve 10, the TDS probe 11, and the water pump 2. After passing through the water pump 2, the water is divided into two paths: one flows through the main pipeline 1, and the other flows from the scale inhibitor pipe 31 through the scale inhibitor valve 32, the scale inhibitor module 33, and the scale inhibitor check valve 34 before converging into the main pipeline 1. During the flow of water through the scale inhibitor pipe 31, the scale inhibitor module 33 can add scale inhibitor to the water. The water containing scale inhibitor mixes with the water in the main pipeline 1 and is then supplied into the housing to flush and protect the reverse osmosis membrane elements. Before restarting the pure water production process after flushing the entire water purifier, first run the program after the water purifier stops producing pure water. The reverse osmosis membrane elements are flushed through the reflux flushing component to reduce the content of scale inhibitor before restarting the pure water production process.
[0047] like Figure 3 As shown, the scale-inhibiting pipe 31 is connected in parallel on the main pipeline 1, with its inlet end located upstream of the water pump 2 and its outlet end located between the water pump outlet and the reverse osmosis assembly. When the water purification equipment produces pure water, the control module controls the reflux valve 52 to close, the inlet valve 10 to open, and the water pump 2 to start. The raw water in the tap water pipe is filtered by the pre-filter cartridge 12 and flows through the inlet valve 10 and the TDS probe 11. The scale-inhibiting valve 32 is controlled according to the TDS value detected by the TDS probe 11. When the TDS value is ≤ the set value, the control module controls the scale-inhibiting valve 32 to close. The water passing through the TDS probe 11 is supplied into the housing through the main pipeline 1 by the water pump 2. The reverse osmosis membrane element separates the water into pure water and concentrated water. The concentrated water is discharged through the wastewater pipe 8, and the pure water flows into the post-filter cartridge 13 through the pure water check valve 7. After being filtered by the post-filter cartridge 13, the pure water flows out from the pure water faucet for user use.
[0048] When the TDS value exceeds the set value, the control module opens the scale inhibition valve 32. Water, after passing through the TDS probe, splits into two paths: one flows from the main pipe 1 into the water pump 2, and the other flows from the scale inhibition pipe 31 through the scale inhibition valve 32, the scale inhibition module 33, and the scale inhibition check valve 34 before returning to the main pipe 1. During the flow of water through the scale inhibition pipe 31, the scale inhibition module 33 adds scale inhibitor to the water, mixing the water containing the scale inhibitor with the water in the main pipe 1. The water pump 2 supplies water into the housing, where the reverse osmosis membrane element separates the water into pure water and concentrated water. The concentrated water is discharged through the wastewater pipe 8, while the pure water flows through the pure water check valve 7 into the post-filter cartridge 13. After being filtered by the post-filter cartridge 13, the pure water flows out from the pure water faucet for user use. Because the water containing the scale inhibitor has a low scale inhibitor content after passing through the reverse osmosis membrane element, its impact on water quality is minimal.
[0049] When the water purification equipment stops producing pure water, the control module closes the antiscaling valve 32 and opens the return valve 52. At this time, regardless of the TDS value, the antiscaling valve 32 remains closed. The water pump 2 is started. Raw water from the tap water pipe, after being filtered by the pre-filter 12, flows directly into the housing through the inlet valve 10, TDS probe 11, and water pump 2. The reverse osmosis membrane element separates the water into pure water and concentrated water. The concentrated water is discharged through the wastewater pipe 8. The pure water returns to the main pipeline 1 through the pure water pipe 6 and the return pipe 51. After mixing with the water in the main pipeline 1, the antiscalant content decreases. The mixed water is then pumped back into the housing by water pump 2 to flush the reverse osmosis membrane element, further reducing the antiscalant content within it. Therefore, when the water purification equipment stops producing pure water, the amount of antiscalant permeating to the pure water side is reduced. When the water purification equipment restarts producing pure water, the antiscalant content in the pure water treated by the reverse osmosis membrane element is lower, thus improving the pure water quality and enhancing the user experience.
[0050] When the entire unit needs to be flushed, close the reflux valve 52, open the inlet valve 10 and the scale inhibitor valve 32, and start the water pump 2. The raw water in the tap water pipe flows through the pre-filter 12, then through the inlet valve 10 and the TDS probe 11, and then splits into two paths. One path flows into the water pump 2 through the main pipe 1, and the other path flows from the scale inhibitor pipe 31 through the scale inhibitor valve 32, the scale inhibitor module 33, and the scale inhibitor check valve 34 before converging into the main pipe 1. During the flow of water through the scale inhibitor pipe 31, the scale inhibitor module 33 can add scale inhibitor to the water. The water containing the scale inhibitor mixes with the water in the main pipe 1, and the water pump 2 supplies the mixed water into the housing to flush and protect the reverse osmosis membrane elements. Before restarting the pure water production process after flushing the entire unit, run the program after the pure water production process has stopped, flush the reverse osmosis membrane elements through the reflux flushing component to reduce the scale inhibitor content, and then restart the pure water production process.
[0051] like Figures 1 to 3As shown, the water purification equipment also includes a domestic water pipe 14 and a domestic water faucet. The inlet pipe of the domestic water pipe 14 is connected to the main pipeline 1 and is located between the pre-filter 12 and the inlet valve 10. When the user needs to use domestic water, they open the domestic water faucet. The raw water in the tap water pipe is filtered by the pre-filter 12 and then flows out through the domestic water pipe 14 and the domestic water faucet for the user's use. When the user needs to use purified water, they keep the domestic water faucet closed, so that the water in the domestic water pipe 14 will not affect the purification equipment's production of purified water.
[0052] 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 system includes a main pipeline (1), a pre-filter (12), a scale inhibitor assembly, a reverse osmosis assembly (4), a reflux flushing assembly, a water pump (2), a pure water pipe (6), and a post-filter (13). The reverse osmosis assembly (4) is provided with an inlet, a pure water outlet, and a wastewater outlet. The main pipeline (1) is connected to the inlet. The pre-filter (12) and the water pump (2) are connected in series on the main pipeline (1). The pure water pipe (6) is connected to the pure water outlet. The post-filter (13) is located on the pure water pipe (6). The scale inhibitor assembly is connected in parallel with the main pipeline (1) and is used to add scale inhibitor to the main pipeline (1); The reflux flushing assembly is connected between the pure water pipe (6) and the inlet of the water pump (2). When the reflux flushing assembly is turned on, the water pump (2) can supply pure water and raw water into the reverse osmosis assembly (4) to flush the reverse osmosis assembly (4).
2. The water purification equipment according to claim 1, characterized in that, The scale inhibitor is located between the outlet of the water pump (2) and the reverse osmosis component (4), and is used to add scale inhibitor to the reverse osmosis component (4).
3. The water purification equipment according to claim 1, characterized in that, The reflux flushing assembly includes a reflux pipe (51) and a reflux valve (52) disposed on the reflux pipe (51). The inlet end of the reflux pipe (51) is connected to the pure water pipe (6), and the outlet end of the reflux pipe (51) is located upstream of the water pump (2). The reflux valve (52) is used to control the opening and closing of the reflux pipe (51).
4. The water purification equipment according to claim 3, characterized in that, The reflux flushing assembly also includes a reflux check valve (53), which only allows water to flow from the pure water pipe (6) to the water pump (2); and / or The pure water pipe (6) is equipped with a pure water one-way valve (7), which only allows water to flow from the reverse osmosis component (4) to the outlet end of the pure water pipe (6) and the backflow flushing component.
5. The water purification equipment according to claim 2, characterized in that, The scale inhibition assembly includes a scale inhibition pipe (31), a scale inhibition valve (32) disposed on the scale inhibition pipe (31), and a scale inhibition module (33). The scale inhibition pipe (31) is connected in parallel to the main pipeline (1). When the scale inhibition valve (32) is opened, the scale inhibition module (33) can add scale inhibitor to the raw water flowing through the scale inhibition pipe (31).
6. The water purification equipment according to claim 5, characterized in that, A TDS probe (11) is provided on the main pipeline (1) between the pre-filter (12) and the water pump (2). The TDS probe (11) is used to detect the TDS value in the water. The water purification equipment also includes a control module for controlling the scale inhibition valve (32), and the TDS probe (11) is electrically connected to the control module.
7. The water purification equipment according to claim 1, characterized in that, A water inlet valve (10) is provided on the main pipeline (1) between the pre-filter (12) and the TDS probe (11); The water purification equipment also includes a domestic water pipe (14), the inlet of which is located on the main pipeline (1) and between the pre-filter (12) and the inlet valve (10).
8. The water purification equipment according to claim 5, characterized in that, The scale inhibition assembly also includes a scale inhibition check valve (34), which only allows water from the scale inhibition module (33) to flow to the reverse osmosis assembly (4).
9. The water purification equipment according to claim 1, characterized in that, The scale inhibitor assembly is located upstream of the water pump (2) and is used to add scale inhibitor to the water pump (2) and the reverse osmosis assembly (4).
10. The water purification equipment according to claim 1, characterized in that, The inlet of the scale inhibitor is located upstream of the water pump (2), and the outlet of the scale inhibitor is located between the outlet of the water pump (2) and the reverse osmosis component (4), for adding scale inhibitor into the reverse osmosis component (4).