Water purification system and water purifier

Abstract

The utility model discloses a water purification system and a water purifier, and relates to the technical field of water purifiers, the water purification system comprises a water inlet pipe, a composite filter element, a water purification pipe and a reverse osmosis filter element which are connected in sequence, the reverse osmosis filter element is connected with a circulating pipe; one end, far away from the reverse osmosis filter element, of the circulating pipe is connected with the composite filter element. According to the RO membrane water purification equipment, by arranging the circularly flowing water path, the TDS rise of water at the pure water end caused by long-time standing of the RO membrane water purification equipment is effectively avoided, the water at the pure water end of the RO membrane water purification equipment is always kept pure, and high-quality purified water is provided for a user at any time.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, in particular to a water purification system and a water purifier. Background Art

[0002] Water, the source of life, has a quality that directly impacts our health. With the rapid advancement of science and technology and the growing awareness of environmental protection, the purity and safety of drinking water have become increasingly important. Against this backdrop, water purification equipment, with its proven ability to effectively remove impurities, harmful substances, and microorganisms from water, has become a fixture in countless households.

[0003] However, existing RO membrane water purification systems have a common problem. When the system is not used for a long time, ions in the concentrated water side of the RO membrane can permeate through the pure water side of the RO membrane through forward osmosis, resulting in a high TDS (total dissolved solids) in the first glass of water. This can lead to excessive intake of impurities and ions when drinking the first glass of water, posing a potential health risk. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model proposes a water purification system. By setting up a circulating water channel, it effectively avoids the increase of TDS of the pure water end of the RO membrane water purification equipment due to long-term static state, which is conducive to maintaining the purity of the water at the pure water end of the RO membrane water purification equipment, and providing users with high-quality purified water at any time.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A water purification system comprises a water inlet pipe, a composite filter element, a water purification pipe and a reverse osmosis filter element connected in sequence;

[0007] The reverse osmosis filter element is connected to a circulation pipe, and one end of the circulation pipe away from the reverse osmosis filter element is connected to the composite filter element.

[0008] Preferably, the clean water pipe is connected to a booster pump for increasing the water pressure in the clean water pipe.

[0009] Preferably, the clean water pipe is connected to a water inlet solenoid valve for opening and closing the clean water pipe, and the water inlet solenoid valve is arranged upstream of the booster pump.

[0010] Preferably, the circulation pipe is connected to a pure water TDS detection device.

[0011] Preferably, the circulation pipe is connected to a pressure relief pipe, one end of the pressure relief pipe away from the circulation pipe is connected to the clean water pipe, and the pressure relief pipe is connected to a pressure relief valve.

[0012] Preferably, the connection point between the pressure relief pipe and the circulation pipe is located downstream of the pure water TDS detection device.

[0013] Preferably, the connecting point between the pressure relief pipe and the clean water pipe is located downstream of the water inlet solenoid valve, and the connecting point between the pressure relief pipe and the clean water pipe is located upstream of the booster pump.

[0014] Preferably, the water inlet pipe is connected to a pressure reducing valve for reducing the water pressure in the water inlet pipe.

[0015] Preferably, the wastewater outlet of the reverse osmosis filter element is connected to a wastewater pipe, and the wastewater pipe is connected to a wastewater solenoid valve.

[0016] The present application also provides a water purifier, which includes the above-mentioned water purification system.

[0017] In summary, the present invention has the following beneficial effects:

[0018] 1. By setting up a circulating water path, when the faucet is not in use, water can continuously circulate between the composite filter element, water inlet solenoid valve, booster pump and reverse osmosis filter element, effectively avoiding the increase of TDS of the pure water end of the RO membrane water purification equipment due to long-term static state, which is conducive to maintaining the purity of the water at the pure water end of the RO membrane water purification equipment, and providing users with high-quality purified water at any time.

[0019] 2. The setting of the pressure reducing valve can stabilize the water inlet pressure, protect the subsequent composite filter element and pipeline from damage by excessive water pressure, extend the service life of the entire water purification system, and reduce maintenance costs.

[0020] 3. The pure water TDS detection device on the circulation pipe can monitor the purity of water in real time, allowing users to clearly understand the water quality, and also provides data support for the automatic control and optimization of the system.

[0021] 4. The design of the pressure relief pipe can relieve pressure in time when the system pressure is too high, protecting various components from damage due to high pressure and improving the safety and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 This is a schematic diagram of the overall structure of a water purification system of the present utility model.

[0024] Figure identification: 1. Water inlet pipe; 11. Pressure reducing valve; 2. Composite filter element; 21. First composite water inlet; 22. Second composite water inlet; 23. First composite water outlet; 24. Second composite water outlet; 3. Clean water pipe; 31. Booster pump; 32. Water inlet solenoid valve; 4. Reverse osmosis filter element; 5. Circulation pipe; 51. Pure water TDS detection device; 6. Water outlet pipe; 7. Pressure relief pipe; 71. Pressure relief valve; 8. Waste water pipe; 81. Waste water solenoid valve; 9. Heating module. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] See also Figure 1 The embodiment of the present utility model discloses a water purification system, which can be used for a water purifier, including a water inlet pipe 1, a composite filter element 2, a water purification pipe 3 and a reverse osmosis filter element 4 connected in sequence; the reverse osmosis filter element 4 is connected to a circulation pipe 5, and the end of the circulation pipe 5 away from the reverse osmosis filter element 4 is connected to the composite filter element 2; the composite filter element 2 is connected to a water outlet pipe 6.

[0029] Specifically, the composite filter element 2 is provided with a first composite water inlet 21, a second composite water inlet 22, a first composite water outlet 23 and a second composite water outlet 24. One end of the water inlet pipe 1 is connected to the first composite water inlet; one end of the water purification pipe 3 is connected to the second composite water outlet 24, and the other end of the water purification pipe 3 is connected to the water inlet of the reverse osmosis filter element 4; one end of the circulation pipe 5 is connected to the water outlet of the reverse osmosis filter element 4, and the other end of the circulation pipe 5 is connected to the second composite water inlet 22; one end of the water outlet pipe 6 is connected to the first composite water outlet 23, and the other end of the water outlet pipe 6 is connected to the heating module 9. The water outlet end of the heating module 9 is connected to the water outlet of the faucet, and the heating module 9 is used to heat the filtered water. When the faucet is in use, water enters through the water inlet pipe 1, passes through the composite filter element 2 for initial filtration, and then enters the reverse osmosis filter element 4 through the water purification pipe 3 for deep filtration. Some of the water then returns to the composite filter element 2 through the circulation pipe 5, forming a circulating water circuit. At the same time, another portion of the water flows out of the water outlet pipe 6 connected to the composite filter element 2 for user use. When the faucet is not in use, water continues to circulate in the system. The water in the water inlet pipe 1 is initially filtered by the composite filter element 2 and then enters the reverse osmosis filter element 4 through the water purification pipe 3 for deep filtration. At this time, because the faucet is closed, most of the water returns to the composite filter element 2 through the circulation pipe 5, continuously circulating between the composite filter element 2, the water purification pipe 3, the reverse osmosis filter element 4, and the circulation pipe 5. This process effectively avoids the problem of increased TDS at the pure water end of the RO membrane water purification system due to long-term static conditions, and consistently maintains the purity of the water at the pure water end of the RO membrane water purification system.

[0030] The clean water pipe 3 is connected to a booster pump 31 that increases the water pressure in the clean water pipe 3. When water flows in the clean water pipe 3, the booster pump 31 starts, increasing the water pressure in the clean water pipe 3, pushing the water quickly through the composite filter element 2 and the reverse osmosis filter element 4 for filtration, thereby improving the working efficiency and filtration effect of the water purification system.

[0031] The clean water pipe 3 is connected to a water inlet solenoid valve 32, which is located upstream of the booster pump 31. During normal operation, the water inlet solenoid valve 32 is open, allowing water to flow through the clean water pipe 3 and into the reverse osmosis filter element 4 for filtration. When the water purification system needs to be shut down or repaired, the water inlet solenoid valve 32 is closed, preventing the flow of water. The provision of the water inlet solenoid valve 32 facilitates control of water flow in various situations.

[0032] The circulation pipe 5 is connected to a pure water TDS detection device 51. The pure water TDS detection device 51 is set in the circulation pipe 5 to monitor the purity of the water in real time, so that the user can clearly understand the water quality, and also provide data support for the automatic control and optimization of the system.

[0033] The circulation pipe 5 is connected to a pressure relief pipe 7. The end of the pressure relief pipe 7, which is remote from the circulation pipe 5, is connected to the purified water pipe 3. The pressure relief pipe 7 is also connected to a pressure relief valve 71. By connecting the circulation pipe 5 to the pressure relief pipe 7 and installing the pressure relief valve 71 on the pressure relief pipe 7, when the system pressure is too high, the pressure can be relieved in time, protecting various components from damage caused by high pressure, and improving the safety and stability of the system.

[0034] The connection point between the pressure relief pipe 7 and the circulation pipe 5 is located downstream of the pure water TDS detection device 51. The connection point between the pressure relief pipe 7 and the clean water pipe 3 is located downstream of the water inlet solenoid valve 32, and the connection point between the pressure relief pipe 7 and the clean water pipe 3 is located upstream of the booster pump 31. On the one hand, after the pure water TDS detection device located on the circulation pipe 5 completes the water purity detection, if the system pressure is too high, since the connection point between the pressure relief pipe 7 and the circulation pipe 5 is downstream of the detection device, the excessive pressure can be released in time through the pressure relief pipe 7, avoiding damage to the detection device due to excessive pressure, ensuring that the detection device can continuously and stably monitor the purity of water, providing users with accurate water quality information, and also providing a reliable data basis for the automatic control and optimization of the system. On the other hand, the connection point between the pressure relief pipe 7 and the clean water pipe 3 is set downstream of the water inlet solenoid valve 32 and upstream of the booster pump 31. When the system pressure is too high and needs to be relieved, the pressure can be released to the appropriate position of the clean water pipe 3 without affecting the normal working state of the water inlet solenoid valve 32, avoiding excessive pressure on the booster pump 31 and damage, thereby protecting the key components of the entire water purification system.

[0035] The water inlet pipe 1 is connected to a pressure reducing valve 11 for reducing the water pressure in the water inlet pipe 1. The provision of the pressure reducing valve 11 in the water inlet pipe 1 can reduce the water pressure in the water inlet pipe 1, protecting the subsequent composite filter element 2 and pipelines from damage caused by excessive water pressure, thereby extending the service life of the entire water purification system and reducing maintenance costs.

[0036] The wastewater outlet of the reverse osmosis filter element 4 is connected to a wastewater pipe 8, which is connected to a wastewater solenoid valve 81. When the reverse osmosis filter element 4 produces wastewater, the wastewater solenoid valve 81 opens in time according to the working state of the system and discharges the wastewater to a designated place for treatment.

[0037] The implementation principle of this embodiment is as follows:

[0038] When the faucet is in use, water enters from the water inlet pipe 1 and first passes through the pressure reducing valve 11 to stabilize the water pressure and protect subsequent components. The water enters the first composite water inlet 21 of the composite filter element 2 for preliminary filtration, and then flows out from the second composite water outlet 24 into the clean water pipe 3. In the clean water pipe 3, if the system is working normally, the water inlet solenoid valve 32 opens, and the booster pump 31 starts to increase the water pressure in the clean water pipe 3, pushing the water quickly through the clean water pipe 3 into the reverse osmosis filter element 4 for deep filtration. After being filtered by the reverse osmosis filter element 4, a part of the water returns to the second composite water inlet 22 of the composite filter element 2 through the circulation pipe 5, forming a circulating water circuit, which circulates continuously to avoid the TDS of the pure water end caused by the RO membrane water purification equipment being stationary for a long time, thereby maintaining the purity of the pure water end; the other part of the water flows out from the first composite water outlet 23 of the composite filter element 2, enters the outlet pipe 6, and then flows out of the faucet outlet for user use after being heated by the heating module 9.

[0039] When the faucet is not in use, water continues to circulate through the system. After initial filtration through the composite filter element 2, water in the water inlet pipe 1 passes through the water purification pipe 3 and enters the reverse osmosis filter element 4 for deep filtration. At this point, most of the water returns to the composite filter element 2 through the circulation pipe 5, continuously circulating between the composite filter element 2, the water purification pipe 3, the reverse osmosis filter element 4, and the circulation pipe 5, ensuring the purity of the water at the pure water end.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water purification system, characterized in that: It comprises a water inlet pipe (1), a composite filter element (2), a water purification pipe (3) and a reverse osmosis filter element (4) which are connected in sequence; The reverse osmosis filter element (4) is connected to a circulation pipe (5), and one end of the circulation pipe (5) away from the reverse osmosis filter element (4) is connected to the composite filter element (2).

2. A water purification system according to claim 1, characterized in that: The clean water pipe (3) is connected to a booster pump (31) for increasing the water pressure in the clean water pipe (3).

3. A water purification system according to claim 2, characterized in that: The clean water pipe (3) is connected to a water inlet electromagnetic valve (32) for opening and closing the clean water pipe (3), and the water inlet electromagnetic valve (32) is arranged upstream of the booster pump (31).

4. A water purification system according to claim 3, characterized in that: The circulation pipe (5) is connected to a pure water TDS detection device (51).

5. A water purification system according to claim 4, characterized in that: The circulation pipe (5) is connected to a pressure relief pipe (7), one end of the pressure relief pipe (7) away from the circulation pipe (5) is connected to the clean water pipe (3), and the pressure relief pipe (7) is connected to a pressure relief valve (71).

6. A water purification system according to claim 5, characterized in that: The connection point between the pressure relief pipe (7) and the circulation pipe (5) is located downstream of the pure water TDS detection device (51).

7. A water purification system according to claim 5, characterized in that: The connection point between the pressure relief pipe (7) and the clean water pipe (3) is located downstream of the water inlet solenoid valve (32), and the connection point between the pressure relief pipe (7) and the clean water pipe (3) is located upstream of the booster pump (31).

8. A water purification system according to claim 1, characterized in that: The water inlet pipe (1) is connected to a pressure reducing valve (11) for reducing the water pressure in the water inlet pipe (1).

9. A water purification system according to claim 1, characterized in that: The wastewater outlet of the reverse osmosis filter element (4) is connected to a wastewater pipe (8), and the wastewater pipe (8) is connected to a wastewater solenoid valve (81).

10. A water purifier, characterized in that: The water purifier comprises the water purification system according to any one of claims 1 to 9.

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