Zero-stale-water waterway system

Abstract

The utility model relates to the field of water filtering systems, in particular to a zero-stale-water waterway system. The zero-stale-water waterway system comprises a water inlet end, a water outlet end, a reverse osmosis filter element, a waste discharge end and a water storage container, the water storage container is provided with a pure water area communicated with the upstream end and the downstream end of the reverse osmosis filter element respectively, and when the water outlet end is closed, the reverse osmosis filter element supplements pure water to the pure water area through the downstream end of the reverse osmosis filter element; when the reverse osmosis filter element is in a standby state, the pure water area conveys pure water to the upstream end of the reverse osmosis filter element, so that concentrated water in the reverse osmosis filter element flows into the water storage container or is discharged from the waste discharge end. The water storage container is provided with the pure water area connected with the upstream end and the downstream end of the reverse osmosis filter element, and after the water outlet end is closed, the reverse osmosis filter element can supplement pure water to the pure water area; when the reverse osmosis filter element is standby, the pure water area conveys pure water to the reverse osmosis filter element, so that concentrated water is squeezed out to be stored or discharged.

Description

Technical Field

[0001] This utility model relates to the field of water filtration systems, specifically a zero-stagnant water system. Background Technology

[0002] As people's demands for drinking water quality increase, reverse osmosis (RO) filters are widely used in various water purification devices due to their high-efficiency filtration performance. However, traditional RO filters have a significant problem in standby mode: the concentrated water remaining in the filter diffuses through the semi-permeable membrane to the pure water side, a phenomenon known as forward osmosis. This process causes the TDS (Total Dissolved Solids) value of the pure water to gradually increase, forming the so-called stale water problem. When the user restarts the water supply, the initial TDS value of the pure water is high, failing to meet the standards for high-quality drinking water.

[0003] To address this issue, some existing water purification systems recirculate the high TDS-value purified water discharged initially back to the raw water end for further filtration. While this setup can reduce the TDS value of the initial effluent to some extent, the initial raw water concentration after mixing remains high, which still has a certain impact on the quality of the subsequently produced purified water.

[0004] Therefore, it is necessary to develop a zero-stagnant water system to prevent concentrated water from entering the pure water end through positive osmosis, which would cause the TDS value to increase. Utility Model Content

[0005] Regarding the problem of concentrated water entering the pure water end in the prior art mentioned above, the technical solution adopted by this utility model to solve this problem is:

[0006] A zero-stagnant water system includes an inlet end for water intake, an outlet end for water output, a reverse osmosis filter cartridge located between the inlet end and the outlet end, a waste discharge end connected to the reverse osmosis filter cartridge, and a water storage container connected between the inlet end and the reverse osmosis filter cartridge. The water storage container has a pure water zone that is respectively connected to the upstream end and the downstream end of the reverse osmosis filter cartridge. When the outlet end is closed, the reverse osmosis filter cartridge replenishes pure water to the pure water zone through its downstream end. When the reverse osmosis filter cartridge is in standby mode, the pure water zone supplies pure water to the upstream end of the reverse osmosis filter cartridge, so that the concentrated water in the reverse osmosis filter cartridge flows into the water storage container or is discharged from the waste discharge end.

[0007] Furthermore, the zero-stagnant water system described in the solution further includes a first return pipe, a second return pipe, an inlet pipe connecting the inlet end and the reverse osmosis filter element, and a pure water pipe connecting the outlet end and the reverse osmosis filter element. The pure water zone is connected to the inlet pipe through the first return pipe, and the connection point is located at the upstream end of the reverse osmosis filter element. The pure water zone is connected to the pure water pipe through the second return pipe, and the connection point is located at the downstream end of the reverse osmosis filter element. The pure water zone is unidirectionally transported to the inlet pipe through the first return pipe.

[0008] Furthermore, the zero-stagnant water system described in the solution also includes a drainage pipe connecting the reverse osmosis filter element and the waste discharge end. The reverse osmosis filter element is provided with a raw water end connected to the inlet pipe, a pure water end connected to the pure water pipe, and a drain end connected to the drain pipe. The drain pipe is provided with a wastewater valve.

[0009] Furthermore, the zero-stagnant water system described in the solution includes a pre-filter, an inlet control valve, and a pressurization device on the inlet pipe.

[0010] Furthermore, in the zero-stagnant water system described in the solution, a second one-way valve and a pressure monitoring device for detecting the on / off state of the outlet are provided on the pure water pipeline. The second one-way valve controls the liquid flowing through the pure water pipeline to be transported unidirectionally to the outlet.

[0011] Furthermore, in the zero-stagnant water system described in the solution, a return control valve and a first check valve are provided on the first return pipeline. The return control valve and the first check valve are used to control the pure water in the pure water zone to be transported unidirectionally from the first return pipeline to the inlet pipeline.

[0012] Furthermore, in the zero-stagnant water system described in the solution, the water storage container further includes a water storage area, and the water inlet pipeline includes a first water inlet pipeline connecting the water inlet end and the water storage area, and a second water inlet pipeline connecting the water storage area and the reverse osmosis filter element.

[0013] Furthermore, in the zero-stagnant water system described in the solution, the water storage area is further provided with a detection component for detecting TDS values, and the pure water area is an elastic water bladder placed within the water storage area.

[0014] Furthermore, the zero-staple water system described in the solution also includes a concentrated water pipeline connecting the drainage pipeline and the first inlet pipeline. The drainage pipeline is also equipped with a direct discharge control valve located downstream of the wastewater valve. The concentrated water pipeline is connected between the wastewater valve and the direct discharge control valve. The concentrated water pipeline is equipped with a third check valve, which is used to control the unidirectional transport of liquid flowing through the drainage pipeline to the water storage area.

[0015] Furthermore, the zero-stagnant water system described in the solution also includes a purified water pipeline, wherein the water outlet is connected to the water inlet pipeline through the purified water pipeline, and the connection point is located between the pre-filter and the water inlet control valve.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention incorporates a water storage container with a pure water zone in the water system, connecting the pure water zone to both the upstream and downstream ends of the reverse osmosis filter cartridge. When the outlet is closed, the reverse osmosis filter cartridge can replenish the pure water zone via its downstream end. When the reverse osmosis filter cartridge is in standby mode, the pure water zone can supply pure water to the upstream end, thereby squeezing all the concentrated water in the reverse osmosis filter cartridge into the storage container or discharging it to the waste outlet. This effectively prevents concentrated water from entering the outlet through osmosis when the reverse osmosis filter cartridge is in standby mode, thus avoiding excessively high TDS values ​​in the output pure water. This not only solves the problem of stagnant water at the outlet caused by traditional reverse osmosis filter cartridges in standby mode and avoids high initial TDS values, but also improves the quality of subsequent pure water production, ensuring that users receive standard-compliant pure water every time they use the product.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a zero-stagnant water system according to the present invention.

[0020] Figure 2 This is a schematic diagram of a zero-stagnant water system according to the present invention.

[0021] Figure 3 This is a schematic diagram of a zero-stagnant water system according to the present invention. Detailed Implementation

[0022] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] Example 1, as Figure 1The diagram illustrates a zero-stagnant water system, comprising an inlet 740 for water intake, an outlet 800 for water output, a reverse osmosis filter 100 located between the inlet 740 and the outlet 800, a waste discharge end 750 connected to the reverse osmosis filter 100, and a water storage container 500 connected between the inlet 740 and the reverse osmosis filter 100. The water storage container 500 has a pure water zone 510 communicating with the upstream and downstream ends of the reverse osmosis filter 100, respectively. When the outlet 800 is closed, the reverse osmosis filter 100 replenishes pure water to the pure water zone 510 through its downstream end. When the reverse osmosis filter 100 is in standby mode, the pure water zone 510 supplies pure water to the upstream end of the reverse osmosis filter 100, so that the concentrated water in the reverse osmosis filter 100 flows into the water storage container 500 or is discharged from the waste discharge end 750.

[0024] This invention incorporates a water storage container 500 with a pure water zone 510 within a water system. The pure water zone 510 is connected to both the upstream and downstream ends of the reverse osmosis filter element 100. When the outlet end 800 is closed, the reverse osmosis filter element 100 can replenish the pure water zone 510 with pure water from its downstream end. When the reverse osmosis filter element 100 is in standby mode, the pure water zone 510 can supply pure water to the upstream end of the reverse osmosis filter element 100, thereby squeezing out all the concentrated water from the reverse osmosis filter element 100. The water storage container 500 stores or discharges water to the waste discharge end 750, effectively preventing concentrated water from entering the outlet end 800 through osmosis when the reverse osmosis filter cartridge 100 is in standby mode, thus preventing the TDS value of the pure water output from the outlet end 800 from being too high. This not only solves the problem of stagnant water generated at the outlet end 800 when the traditional reverse osmosis filter cartridge 100 is in standby mode and avoids the situation of high TDS value of the initial water output, but also improves the quality of the pure water produced subsequently, ensuring that users can obtain pure water that meets the standards every time they use it.

[0025] Specifically, in this embodiment, the water outlet 800 is a faucet. When the system is working normally, raw water enters the reverse osmosis filter element 100 from the water inlet 740. Under pressure, water molecules and solutes are separated through a semi-permeable membrane, and the resulting pure water is output through the water outlet 800 for user use.

[0026] When the user closes the water outlet 800 and stops taking water, the reverse osmosis filter 100 can replenish pure water to the pure water zone 510. When the reverse osmosis filter 100 is in standby mode, the pure water zone 510 of the water storage container 500 will transport the stored pure water to the upstream end of the reverse osmosis filter 100, thereby creating a positive driving force for the concentrate and squeezing the concentrate to the waste discharge end 750.

[0027] In other embodiments, the reverse osmosis filter 100 squeezes the concentrated water into the water storage container 500 for storage. When the user uses the water again, the raw water at the inlet 740 is first mixed with the concentrated water in the water storage container 500, and then filtered again by the reverse osmosis filter 100 for the user's use.

[0028] Example 2, further, as Figure 1 The illustrated zero-stagnant water system further includes a first return pipe 610, a second return pipe 620, an inlet pipe 200 connecting the inlet end 740 and the reverse osmosis filter element 100, and a pure water pipe 300 connecting the outlet end 800 and the reverse osmosis filter element 100. The pure water zone 510 is connected to the inlet pipe 200 through the first return pipe 610, with the connection point located upstream of the reverse osmosis filter element 100. The pure water zone 510 is connected to the pure water pipe 300 through the second return pipe 620, with the connection point located downstream of the reverse osmosis filter element 100. The pure water zone 510 is unidirectionally transported to the inlet pipe 200 through the first return pipe 610.

[0029] This embodiment includes the features of Embodiment 1, but differs from Embodiment 1 in that, by setting up a first return pipe 610 and a second return pipe 620, the pure water zone 510 can be connected to the upstream end of the reverse osmosis filter element 100 of the inlet pipe 200 through the first return pipe 610, and simultaneously connected to the downstream end of the reverse osmosis filter element 100 of the pure water pipe 300 through the second return pipe 620. Furthermore, the first return pipe 610 can only unidirectionally supply water to the inlet pipe 200. This arrangement not only ensures that, in standby mode, the pure water in the pure water zone 510 can be unidirectionally supplied back to the inlet pipe 200, thereby squeezing out the concentrated water in the reverse osmosis filter element 100, but also effectively prevents water in the inlet pipe 200 that has not been filtered by the reverse osmosis filter element 100 from entering the pure water zone 510, ensuring the quality of the pure water in the pure water zone 510.

[0030] Example 3, further, such as Figure 1 The illustrated zero-stagnant water system further includes a drain pipe 400 connecting the reverse osmosis filter element 100 and the waste discharge end 750. The reverse osmosis filter element 100 is provided with a raw water end 101 connected to the inlet water pipe 200, a pure water end 102 connected to the pure water pipe 300, and a drain end 103 connected to the drain pipe 400. The drain pipe 400 is provided with a wastewater valve 410.

[0031] This embodiment incorporates features of Embodiment Two, but differs in that it effectively manages the wastewater generated by the reverse osmosis filter element 100 by setting up a drainage pipe 400 and a wastewater valve 410 within the drainage pipe 400. Specifically, the drainage pipe 400 ensures that the concentrated water generated by the reverse osmosis filter element 100 during treatment can be effectively discharged, preventing concentrated water from remaining inside the system and affecting the quality of the subsequently produced pure water. Furthermore, the wastewater valve 410 can be in the form of a solenoid valve or a wastewater proportional valve to precisely control the drainage flow rate of the drainage pipe 400. When using a solenoid valve, the wastewater discharge rate can be automatically adjusted according to a preset program, achieving intelligent management. For example, the valve can automatically adjust the wastewater discharge ratio according to the inlet water pressure and flow rate to ensure the best water purification effect. Furthermore, the reverse osmosis filter element 100 is provided with a raw water end 101 connected to the inlet water pipe 200, a pure water end 102 connected to the pure water pipe 300, and a drain end 103 connected to the drain pipe 400. This setting provides an efficient water flow path for the entire water purification process. Specifically, the raw water end 101 receives the water source to be treated from the inlet water pipe 200. After being filtered by the reverse osmosis membrane, the pure water flows into the pure water pipe 300 through the pure water end 102 for user use, while the concentrated wastewater is discharged into the drain pipe 400 through the drain end 103. This setting not only optimizes the water flow path but also improves the filtration efficiency.

[0032] Example 4, further, as Figure 1 The diagram shows a zero-stagnant water system, wherein the water inlet pipe 200 is equipped with a pre-filter 230, a water inlet control valve 210, and a pressurization device 220.

[0033] This embodiment includes features of Embodiment 3, but differs from Embodiment 3 in that the present invention improves the water purification efficiency and operational stability of the system by sequentially installing a pre-filter 230, an inlet control valve 210, and a booster device 220 on the inlet pipe 200. Specifically, the pre-filter 230 can pre-filter out large particulate impurities in the water source, protecting the reverse osmosis filter 100 from damage. Furthermore, the inlet control valve 210 can precisely control the amount of water entering the reverse osmosis filter 100, ensuring a stable water supply to the system. In addition, the inlet control valve 210 also has an emergency shut-off function, which can quickly cut off the water source when the system malfunctions or encounters abnormal conditions, preventing equipment damage and water pollution, and improving the safety and durability of the system. Furthermore, the booster device 220 is used to increase the water pressure, ensuring the smooth operation of the reverse osmosis process in the reverse osmosis filter 100.

[0034] Example 5, further, as Figure 1The diagram shows a zero-stagnant water system, wherein the pure water pipeline 300 is equipped with a second one-way valve 310 and a pressure monitoring device 320 for detecting the opening and closing status of the outlet 800. The second one-way valve 310 controls the liquid flowing through the pure water pipeline 300 to be unidirectionally transported to the outlet 800.

[0035] This embodiment includes features of Embodiment 4, but differs from Embodiment 4 in that, by setting a second one-way valve 310, this utility model ensures that the liquid flowing through the pure water pipeline 300 can only be transported unidirectionally to the outlet 800, avoiding the problem of water backflow at the outlet 800. In addition, the second one-way valve 310 can also close quickly in the event of a sudden power outage or other abnormal situation, preventing untreated water from flowing into the outlet 800, thus improving the safety and reliability of the system. Furthermore, by setting a pressure monitoring device 320 for detecting the on / off state of the outlet 800, and using it in conjunction with the second one-way valve 310, when the pressure monitoring device 320 detects that the outlet 800 is closed, it will trigger the second one-way valve 310 to close, preventing the pure water in the pure water pipeline 300 from flowing to the outlet 800, but instead returning to the pure water zone 510 through the first return pipeline 610, thereby ensuring that the pure water zone 510 can provide pure water at any time.

[0036] Example 6, further, as Figure 1 The diagram shows a zero-stagnant water circuit system, wherein the first return pipe 610 is provided with a return control valve 611 and a first check valve 612, the return control valve 611 and the first check valve 612 are used to control the pure water in the pure water zone 510 to be unidirectionally transported from the first return pipe 610 to the inlet pipe 200.

[0037] This embodiment includes features of Embodiment 5, but differs from Embodiment 5 in that, by setting a reflux control valve 611, the present invention can adjust according to the actual needs of the system, ensuring that in standby mode, pure water in the pure water zone 510 can be replenished to the inlet pipe 200 at an appropriate flow rate, thereby squeezing the concentrated water in the reverse osmosis filter element 100 to the water storage container 500 or the waste discharge end 750; furthermore, by setting a first one-way valve 612, it is ensured that pure water can only flow unidirectionally from the pure water zone 510 to the inlet pipe 200 through the first reflux pipe 610, and will not flow in reverse. This setting effectively prevents water in the inlet pipe 200 that has not been filtered by the reverse osmosis filter element 100 from flowing back into the pure water zone 510, thereby ensuring the quality of pure water in the pure water zone 510.

[0038] Example 7, further, as Figure 1The illustrated zero-stagnant water system includes a water storage container 500 further comprising a water storage area 520, and an inlet pipe 200 comprising a first inlet pipe 240 connecting the inlet end 740 and the water storage area 520, and a second inlet pipe 250 connecting the water storage area 520 and the reverse osmosis filter element 100.

[0039] This embodiment includes features of Embodiment Six, but differs from Embodiment Six in that, by setting up a water storage area 520 and connecting it to the water inlet 740 via a first water inlet pipe 240, and to the reverse osmosis filter element 100 via a second water inlet pipe 250, the present invention improves the system's operating efficiency, water quality management, and resource utilization capabilities. Specifically, by connecting the water storage area 520 to the water inlet 740 via the first water inlet pipe 240, and to the reverse osmosis filter element 100 via the second water inlet pipe 250, the system can initially store and buffer the water source when water enters. This setting can effectively cope with fluctuations in water source pressure and changes in flow rate, ensuring a stable water flow into the reverse osmosis filter element 100. In addition, this setting can also provide additional water reserves during peak water usage periods to meet users' water needs.

[0040] Example 8, further, as Figure 1 The diagram shows a zero-stagnant water system, wherein the water storage area 520 is further provided with a detection component 530 for detecting TDS values, and the pure water area 510 is an elastic water bladder placed inside the water storage area 520.

[0041] This embodiment includes features of Embodiment Seven, but differs from Embodiment Seven in that it incorporates a detection component 530 for detecting TDS values ​​in the water storage area 520. This feature enhances the water quality monitoring capability and automation level in the water storage area 520. Specifically, the detection component 530 can monitor the TDS value of the water in the water storage area 520 in real time. When the TDS value in the water storage area 520 is detected to be too high, the system can increase the water flow at the inlet 740 to dilute the water in the water storage area 520 and reduce the TDS value. In addition, the system can adjust the pressure setting of the booster device 220 to ensure that the reverse osmosis filter element 100 can produce high-quality pure water under optimal pressure conditions. Furthermore, the pure water area 510 is an elastic water bladder placed inside the water storage area 520, allowing the water bladder to expand elastically as the stored pure water increases. When entering the concentrated water discharge state, the water bladder, through its own elasticity and in conjunction with the extraction action of the booster device 220, supplies the internal pure water to the reverse osmosis filter element 100.

[0042] Example 9: This example includes all the features of Examples 1 to 8. Specifically, the system has multiple working states. When the system is in the flushing state, the inlet control valve 210, the booster device 220, and the wastewater valve 410 are opened. Raw water enters through the inlet end 740 and passes through the water storage area 520, the pre-filter 230, the inlet control valve 210, the booster device 220, the reverse osmosis filter 100, and the wastewater valve 410 in sequence, and is discharged from the waste outlet end 750, thereby cleaning the inside of the system.

[0043] When the system is in the pure water production state, raw water enters through the inlet 740 and is processed sequentially through the water storage area 520, the pre-filter 230, the inlet control valve 210, the booster device 220, and the reverse osmosis filter 100 to produce pure water. The pure water is then output from the outlet 800 through the second one-way valve 310 and the pressure monitoring device 320.

[0044] When the system is in the pure water zone 510 water replenishment state, after the outlet 800 is closed, the pressure monitoring device 320 detects that the outlet 800 is closed and controls the second check valve 310 to close. At this time, the return control valve 611 and the first check valve 612 are in the closed state, so that the pure water output from the pure water end 102 of the reverse osmosis filter element 100 enters and is stored in the pure water zone 510 through the second return pipeline 620.

[0045] When the system is in the concentrated water discharge state, the booster device 220, the reflux control valve 611, the first check valve 612 and the wastewater valve 410 are opened. The booster device 220 draws the pure water in the pure water zone 510 into the reverse osmosis filter element 100, and discharges the concentrated water in the reverse osmosis filter element 100 from the drain end 103 through the drain pipe 400 to the waste discharge end 750, thereby completing the concentrated water discharge process.

[0046] Example 10, further, as Figure 1-2 The illustrated zero-stagnant water system further includes a concentrate pipe 720 connecting the drain pipe 400 and the first inlet pipe 240. The drain pipe 400 is also provided with a direct discharge control valve 420 located downstream of the wastewater valve 410. The concentrate pipe 720 is connected between the wastewater valve 410 and the direct discharge control valve 420. A third check valve 721 is provided on the concentrate pipe 720. The third check valve 721 is used to control the unidirectional transport of liquid flowing through the drain pipe 400 to the water storage area 520.

[0047] This embodiment includes features of Embodiment Nine, but differs from Embodiment Nine in that, by setting up a concentrated water pipeline 720 connecting the drainage pipeline 400 and the first inlet pipeline 240, the concentrated water produced by the reverse osmosis filter element 100 can flow back to the storage area 520 through the concentrated water pipeline 720, and mix with the water input at the inlet 740 before being filtered again, thereby reducing wastewater discharge and improving overall water utilization. Furthermore, by providing a third one-way valve 721 on the concentrated water pipeline 720, it is ensured that the concentrated water can only flow unidirectionally to the storage container 500, preventing the risk of pollution caused by reverse water flow. Furthermore, through... By installing a direct discharge control valve 420 on the drainage pipe 400, and cooperating with a third one-way valve 721, the system can choose to directly discharge the concentrated water to the waste discharge end 750 or guide it back to the water storage container 500 for secondary filtration according to actual needs. This setting not only helps to quickly discharge the concentrated water when the water quality is poor, avoiding affecting the quality of the subsequent pure water, but also enables the reuse of the concentrated water when water resources are scarce, improving the system's adaptability and environmental performance. Furthermore, in this embodiment, as the water volume in the water storage area 520 increases, it can squeeze the water bag to discharge water, further improving the effect of supplying pure water from the pure water area 510 to the reverse osmosis filter element 100.

[0048] Example 11, further, as Figure 1-3 The zero-stagnant water system shown includes a water purification pipeline 810. The water outlet 800 is connected to the water inlet pipeline 200 through the water purification pipeline 810, and the connection point is located between the pre-filter 230 and the water inlet control valve 210.

[0049] This embodiment includes features of Embodiment Nine, but differs from Embodiment Nine in that it incorporates a purified water pipe 810 connecting the inlet pipe 200 and the outlet 800. Furthermore, the connection point between the purified water pipe 810 and the inlet pipe 200 is located between the pre-filter 230 and the inlet control valve 210. This arrangement enhances the system's flexibility and provides users with diverse water usage options. Specifically, this arrangement allows the outlet 800 to directly output purified water filtered by the pre-filter 230. The pre-filter 230 effectively removes large particulate impurities, suspended solids, and other larger pollutants from the water source, ensuring that the water quality after preliminary filtration meets basic standards. This standard is suitable for everyday cleaning or washing vegetables where high-purity water is not required. Furthermore, when users require higher-quality drinking water, the system can perform further fine filtration through the reverse osmosis filter 100. In this case, the water flows through the pre-filter 230 and then into the reverse osmosis filter 100, where the highly efficient reverse osmosis membrane removes finer impurities and dissolved substances, producing pure water that meets high-quality drinking water standards. This pure water is then output to the user through the outlet 800. This dual-mode setup not only improves the overall efficiency of the system but also provides users with flexible options to meet their water needs in different scenarios.

[0050] In addition, the system in this embodiment can also produce domestic water. When the system is in the state of discharging concentrated water, the raw water enters through the inlet 740, passes through the water storage area 520 and the pre-filter 230 in sequence, and is directly output from the outlet 800 through the purified water pipeline 810.

[0051] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A zero-stagnant water system, characterized in that: The system includes an inlet end (740) for water intake, an outlet end (800) for water output, a reverse osmosis filter element (100) located between the inlet end (740) and the outlet end (800), a waste discharge end (750) connected to the reverse osmosis filter element (100), and a water storage container (500) connected between the inlet end (740) and the reverse osmosis filter element (100). The water storage container (500) is provided with connections respectively to the reverse osmosis filter element (100). The pure water zone (510) is connected to the upstream and downstream ends. When the outlet end (800) is closed, the reverse osmosis filter element (100) replenishes pure water to the pure water zone (510) through its downstream end. When the reverse osmosis filter element (100) is in standby mode, the pure water zone (510) delivers pure water to the upstream end of the reverse osmosis filter element (100) so that the concentrated water in the reverse osmosis filter element (100) flows into the water storage container (500) or is discharged from the waste discharge end (750).

2. The zero-stagnant water system according to claim 1, characterized in that: It also includes a first return pipe (610), a second return pipe (620), an inlet pipe (200) connecting the inlet end (740) and the reverse osmosis filter element (100), and a pure water pipe (300) connecting the outlet end (800) and the reverse osmosis filter element (100). The pure water zone (510) is connected to the inlet pipe (200) through the first return pipe (610), and the connection point is located at the upstream end of the reverse osmosis filter element (100). The pure water zone (510) is connected to the pure water pipe (300) through the second return pipe (620), and the connection point is located at the downstream end of the reverse osmosis filter element (100). The pure water zone (510) is unidirectionally transported to the inlet pipe (200) through the first return pipe (610).

3. A zero-stagnant water system according to claim 2, characterized in that: It also includes a drainage pipe (400) connecting the reverse osmosis filter element (100) and the waste discharge end (750). The reverse osmosis filter element (100) is provided with a raw water end (101) connected to the water inlet pipe (200), a pure water end (102) connected to the pure water pipe (300), and a drain end (103) connected to the drain pipe (400). The drain pipe (400) is provided with a wastewater valve (410).

4. A zero-stagnant water system according to claim 2, characterized in that: The water inlet pipe (200) is equipped with a pre-filter (230), a water inlet control valve (210), and a booster device (220).

5. A zero-stagnant water system according to claim 2, characterized in that: The pure water pipeline (300) is equipped with a second one-way valve (310) and a pressure monitoring device (320) for detecting the opening and closing status of the outlet (800). The second one-way valve (310) controls the liquid flowing through the pure water pipeline (300) to be transported unidirectionally to the outlet (800).

6. A zero-stagnant water system according to claim 2, characterized in that: The first return pipeline (610) is provided with a return control valve (611) and a first check valve (612). The return control valve (611) and the first check valve (612) are used to control the pure water in the pure water zone (510) to be transported unidirectionally from the first return pipeline (610) to the water inlet pipeline (200).

7. A zero-stagnant water system according to claim 3, characterized in that: The water storage container (500) also includes a water storage area (520), and the water inlet pipe (200) includes a first water inlet pipe (240) connecting the water inlet end (740) and the water storage area (520), and a second water inlet pipe (250) connecting the water storage area (520) and the reverse osmosis filter element (100).

8. A zero-stagnant water system according to claim 7, characterized in that: The water storage area (520) is also provided with a detection component (530) for detecting TDS values. The pure water area (510) is an elastic water bag, which is placed inside the water storage area (520).

9. A zero-stagnant water system according to claim 7, characterized in that: It also includes a concentrate pipeline (720) connecting the drain pipeline (400) and the first inlet pipeline (240). The drain pipeline (400) is also provided with a direct discharge control valve (420) located downstream of the wastewater valve (410). The concentrate pipeline (720) is connected between the wastewater valve (410) and the direct discharge control valve (420). The concentrate pipeline (720) is provided with a third check valve (721). The third check valve (721) is used to control the liquid flowing through the drain pipeline (400) to be transported unidirectionally to the water storage area (520).

10. A zero-stagnant water system according to claim 4, characterized in that: It also includes a water purification pipeline (810), through which the water outlet (800) is connected to the water inlet pipeline (200), and the connection point is located between the pre-filter (230) and the water inlet control valve (210).

Images