Waterway system and purified drinking equipment

Abstract

The utility model provides a waterway system and purified drinking equipment, and belongs to the technical field of water purification. The waterway system comprises a raw water waterway, a pure water waterway, a waste water waterway and water equipment, the raw water waterway is provided with a booster pump and a reverse osmosis membrane filter element, the booster pump is connected with the reverse osmosis membrane filter element, and the waste water waterway is connected with a waste water port of the reverse osmosis membrane filter element; a water purifying tank, a water pump and a three-way valve are arranged on the pure water path, a water inlet of the water purifying tank is connected with a pure water port of the reverse osmosis membrane filter element, a water inlet of the water pump is connected with a water outlet of the water purifying tank, a water outlet of the water pump is connected with a water inlet of the three-way valve, and a first water outlet of the three-way valve is connected with water using equipment; and the flushing water path is connected with a second water outlet of the three-way valve and a water inlet of the booster pump. According to the water path system, the TDS value of the first cup of water of the existing reverse osmosis water purification equipment is reduced to a certain extent, and meanwhile, the service life of the reverse osmosis membrane filter element is prolonged.

Description

Technical Field

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

[0002] The desktop free installation water purifier uses a removable raw water tank containing tap water as a water source. The tap water in the raw water tank flows through the filtration system to produce pure water that can be drunk directly. The wastewater generated by the filtration system still flows back into the raw water tank, and the wastewater is mixed with the unfiltered tap water, causing the salt content and hardness of the mixed water in the raw water tank to continue to increase. For example, a water system and a water purifier disclosed by the authorization announcement number CN218922316U. These high-concentration mixed waters are easy to accumulate inside the reverse osmosis membrane filter element and the pipeline. On the one hand, the filter element is easily blocked, resulting in a reduction in the service life of the filter element, which in turn increases the frequency of user replacement of the filter element, increasing the user's core replacement cost. On the other hand, the salt substances in the high-concentration mixed water will have an osmotic effect. These salt substances will gradually penetrate from the concentrated water side of the reverse osmosis membrane filter element in the filtration system to the pure water side, so that after the whole machine is shut down for a period of time, when water is taken again, the TDS value of the first cup of water is too high, and the first cup of water cannot be directly drunk. Utility Model Content

[0003] In view of the above technical problems existing in the prior art, the utility model provides a water system and a drinking water purification device. The water system reduces the TDS value of the first cup of water of the existing reverse osmosis water purification device to a certain extent, and at the same time increases the service life of the reverse osmosis membrane filter element.

[0004] The technical solution adopted in the embodiment of the utility model is:

[0005] A waterway system, comprising a raw waterway, a pure waterway, a wastewater waterway and water-using equipment, wherein a reverse osmosis membrane filter element is arranged on the raw waterway, and the wastewater waterway is connected to the wastewater outlet of the reverse osmosis membrane filter element;

[0006] The pure water waterway is provided with a clean water tank, a water pump and a three-way valve; the water inlet of the clean water tank is connected to the pure water port of the reverse osmosis membrane filter element, the water inlet of the water pump is connected to the water outlet of the clean water tank, the water outlet of the water pump is connected to the water inlet of the three-way valve, and the first water outlet of the three-way valve is connected to the water-using equipment;

[0007] The water system also includes a flushing waterway, a first end of the flushing waterway is connected to the second water outlet of the three-way valve, and a second end of the flushing waterway is connected to an upstream area of ​​the reverse osmosis membrane filter element on the flushing waterway.

[0008] Furthermore, a booster pump and a composite filter element are also provided on the raw water circuit, the water inlet of the booster pump is connected to the water source, the water outlet of the booster pump is connected to the water inlet of the composite filter element, and the water outlet of the composite filter element is connected to the water inlet of the reverse osmosis membrane filter element. The booster pump is located upstream of the composite filter element and the reverse osmosis membrane filter element, respectively, and can be used to apply pressure to the water so that water molecules can pass through the two filter elements smoothly.

[0009] Furthermore, the water system also includes a raw water tank, the water inlet of the booster pump is connected to the water outlet of the raw water tank, and the wastewater waterway is connected to the water inlet in the raw water tank.

[0010] Furthermore, a wastewater solenoid valve is provided on the wastewater waterway, the water inlet of the wastewater solenoid valve is connected to the wastewater outlet of the reverse osmosis membrane filter element, and the water outlet of the wastewater solenoid valve is connected to the water inlet of the raw water tank;

[0011] A pure water solenoid valve is arranged on the pure water waterway, the water inlet of the pure water solenoid valve is connected to the pure water outlet of the reverse osmosis membrane filter element, and the water outlet of the pure water solenoid valve is connected to the water inlet of the clean water tank.

[0012] Furthermore, a water inlet solenoid valve is provided between the water outlet of the raw water tank and the water inlet of the booster pump. The provision of the water inlet solenoid valve can prevent the booster pump, composite filter element and reverse osmosis filter element from being impacted by water hammer of tap water after the whole machine stops making water, thereby preventing leakage.

[0013] Furthermore, the raw water circuit is provided with a tap water inlet interface, and the waste water circuit is provided with a waste water outlet interface. The tap water inlet interface can be selectively connected to the tap water supply pipeline and the raw water tank, and the waste water outlet interface can be detachably connected to the raw water tank. This structure enables the water circuit system to monitor the water quality of municipal tap water in real time. Users can independently choose the corresponding raw water supply method according to the water quality monitoring situation. In terms of use, the water quality differences in different regions are taken into account, the application scope of the water purifier is broadened, and the requirements of users in different water quality areas are met. Furthermore, TDS sensors are respectively provided on the raw water circuit and the pure water circuit.

[0014] Furthermore, a one-way valve is provided on the flushing waterway, the water inlet of the one-way valve is connected to the second water outlet of the three-way valve, and the water outlet of the one-way valve is connected to the water inlet of the booster pump or the water inlet of the composite filter element. The one-way valve is used to conduct the flow from the pure water waterway into the raw water waterway and block the flow from the raw water waterway into the pure water waterway, so as to prevent the raw water on the raw water waterway from directly entering the water-using equipment through the flushing waterway.

[0015] Furthermore, a liquid level sensing switch is provided in the clean water tank, and the liquid level sensing switch is used to monitor the highest water level in the clean water tank.

[0016] A drinking water purification device comprises a water system as described in any one of the above embodiments.

[0017] Compared with the prior art, the beneficial effects of the embodiments of the present invention are:

[0018] The water system of the utility model can soak and rinse the reverse osmosis membrane filter element with pure water stored in the clean water tank by setting a flushing water channel. Thus, the dirt and deposited salt on the surface of the filter element are taken away, the filtering capacity of the filter element is improved, and the service life of the filter element is extended. At the same time, after the high-concentration mixed water accumulated in the filter element is replaced by pure water with a lower TDS value, the concentration difference between the concentrated water side and the pure water side of the reverse osmosis membrane filter element is reduced, and the penetration effect of salt substances is slowed down, so that after the whole machine is shut down for a period of time, when water is taken again, the TDS value of the first cup of water will not be too high, and the first cup of water can be directly drunk.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0021] Figure 1 This is a schematic diagram of the structure of the water system of the first embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the water system of the second embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the water system of the third embodiment of the utility model.

[0024] In the figure:

[0025] 100, raw water circuit; 101, booster pump; 102, composite filter element; 103, raw water TDS sensor; 104, reverse osmosis membrane filter element; 105, water inlet solenoid valve; 106, tap water inlet interface; 107, water inlet three-way ball valve;

[0026] 200, pure water circuit; 201, clean water tank; 202, water pump; 203, three-way valve; 204, pure water solenoid valve; 205, pure water TDS sensor;

[0027] 300, wastewater waterway; 301, wastewater solenoid valve; 302, wastewater outlet interface

[0028] 400, flushing water circuit; 401, one-way valve;

[0029] 500. Water-using equipment;

[0030] 600. Raw water tank. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present utility model, the present utility model is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a water channel system, which includes a raw water channel 100, a pure water channel 200, a waste water channel 300, a flushing water channel 400 and a water-using device 500.

[0034] At least one reverse osmosis membrane filter element 104 is provided on the raw water waterway 100, and external water source can directly flow into the interior through the water inlet of the reverse osmosis membrane filter element 104 for filtration to produce pure water. The wastewater waterway 300 is connected to the wastewater outlet of the reverse osmosis membrane filter element 104, and the wastewater generated by the reverse osmosis membrane filter element 104 in the process of producing pure water is discharged through the wastewater waterway 300.

[0035] In the present embodiment, a pure water channel 200 is provided with a clean water tank 201 , a water pump 202 and a three-way valve 203 in sequence along the water flow direction.

[0036] The water inlet of the clean water tank 201 is connected to the pure water outlet of the reverse osmosis membrane filter element 104, and the pure water produced by the reverse osmosis membrane filter element 104 can flow into the clean water tank 201 for storage.

[0037] The water inlet of the water pump 202 is connected to the water outlet of the clean water tank 201 , the water outlet of the water pump 202 is connected to the water inlet A of the three-way valve 203 , and the first water outlet B of the three-way valve 203 is connected to the water-using equipment 500 .

[0038] The first end of the flushing water channel 400 is connected to the second water outlet C of the three-way valve 203 , and the second end of the flushing water channel 400 is connected to the upstream area of ​​the reverse osmosis membrane filter element 104 on the raw water channel 100 .

[0039] When the user uses the water-using device 500 , the AB channel of the three-way valve 203 is opened, and the AC channel is closed, and the water pump 202 directly pumps the pure water stored in the clean water tank 201 into the water-using device 500 for use.

[0040] When the user does not use the water-using equipment 500 for a long time, the AB channel of the three-way valve 203 can be closed, and then the AC channel can be opened to pump the pure water in the clean water tank 201 into the reverse osmosis membrane filter element 104 through the water pump 202 for soaking, flushing, etc. Since pure water has less impurities, it can remove dirt and deposited salt on the surface of the reverse osmosis membrane filter element 104, thereby improving the filtering capacity of the filter element and extending the service life of the filter element.

[0041] The water system of the utility model can soak and rinse the reverse osmosis membrane filter element 104 with pure water stored in the clean water tank 201 by setting a flushing water channel 400. Thus, the dirt and deposited salt on the surface of the filter element are taken away, the filtering capacity of the filter element is improved, and the service life of the filter element is extended. At the same time, after the high-concentration mixed water accumulated in the filter element is replaced by pure water with a lower TDS value, the concentration difference between the concentrated water side and the pure water side of the reverse osmosis membrane filter element 104 is reduced, and the penetration effect of salt substances is slowed down, so that after the whole machine is shut down for a period of time, when water is taken again, the TDS value of the first cup of water will not be too high, and the first cup of water can be directly drunk.

[0042] In some embodiments, a booster pump 101 and a composite filter element 102 are further provided on the raw water circuit 100, and the booster pump 101 and the composite filter element 102 are both located upstream of the reverse osmosis membrane filter element 104, the water inlet of the booster pump 101 is connected to the water source, the water outlet of the booster pump 101 is connected to the water inlet of the composite filter element 102, and the water outlet of the composite filter element 102 is connected to the water inlet of the reverse osmosis membrane filter element 104. The booster pump 101 can pump water in the water source into the composite filter element 102 and the reverse osmosis membrane filter element 104 in sequence for filtration to generate pure water.

[0043] The composite filter element 102 of this embodiment is provided with PP cotton and activated carbon inside, which are mainly used to filter large particles of impurities such as mud, rust, etc. in tap water, and absorb residual chlorine, different colors, and odors in water.

[0044] The internal filter material of the reverse osmosis membrane filter element 104 is a RO membrane (ie, reverse osmosis membrane) which is mainly used to filter harmful substances such as viruses and bacteria in water.

[0045] The booster pump 101 is located upstream of the composite filter element 102 and the reverse osmosis membrane filter element 104, respectively, and can be used to apply pressure to water so that water molecules can pass through the two filter elements smoothly.

[0046] like Figure 1 and Figure 2 As shown, in some embodiments, a one-way valve 401 is further provided on the flushing water circuit 400, the water inlet of the one-way valve 401 is connected to the second water outlet C of the three-way valve 203, and the water outlet of the one-way valve 401 is connected to the water inlet of the boosting pump 101 or the water inlet of the composite filter element 102.

[0047] The one-way valve 401 is used to conduct the flow from the pure water channel 200 into the raw water channel 100, and block the flow from the raw water channel 100 into the pure water channel 200, so as to prevent the raw water on the raw water channel 100 from directly entering the water-using equipment 500 through the flushing water channel 400.

[0048] like Figure 1 and Figure 2 As shown, in some embodiments, the water system includes a raw water tank 600, which serves as a water source in the water system of this embodiment. The water inlet of the booster pump 101 is connected to the water outlet in the raw water tank 600, and the wastewater waterway 300 is connected to the water inlet in the raw water tank 600.

[0049] The raw water tank 600 can be used to store tap water, and the booster pump 101 pumps the tap water in the raw water tank 600 into the composite filter element 102 and the reverse osmosis membrane filter element 104 for filtration. At the same time, the waste water channel 300 is connected to the raw water tank 600, and the waste water generated by the composite filter element 102 can flow back to the raw water tank 600 for recycling, thereby saving water resources.

[0050] like Figure 2 As shown, in some embodiments, a water inlet solenoid valve 105 is further provided between the raw water tank 600 and the booster pump 101, the water inlet of the water inlet solenoid valve 105 is communicated with the water outlet of the raw water tank 600, and the water outlet of the water inlet solenoid valve 105 is communicated with the water inlet of the booster pump 101. When the whole machine is producing water, the water inlet solenoid valve 105 is opened, and the tap water stored in the raw water tank 600 is pressurized by the booster pump 101 and the filter element to produce pure water and store it in the clean water tank 201, and the generated waste water is discharged through the waste water channel 300. When the whole machine stops producing water, the control system of the whole machine controls the water inlet solenoid valve 105 to close, preventing the tap water from entering the booster pump 101 and the two filter elements.

[0051] The provision of the water inlet solenoid valve 105 can prevent the booster pump 101, the composite filter element 102 and the reverse osmosis filter element from being impacted by the water hammer of the tap water after the whole machine stops producing water, thereby preventing leakage.

[0052] It should be noted that the second end of the flushing water circuit 400 of the present embodiment is connected to the upstream area of ​​the reverse osmosis membrane filter element 104 on the raw water circuit 100. The second end of the flushing water circuit 400 can be connected to the water inlet of the boosting pump 101, or the second end of the flushing water circuit 400 can be connected to the water inlet of the composite filter element 102, as long as the water pump 202 can pump the water in the clean water tank 201 into the reverse osmosis membrane filter element 104.

[0053] Furthermore, in some embodiments, a wastewater solenoid valve 301 is provided on the wastewater waterway 300 , the water inlet of the wastewater solenoid valve 301 is connected to the wastewater port of the reverse osmosis membrane filter element 104 , and the water outlet of the wastewater solenoid valve 301 is connected to the water inlet of the raw water tank 600 .

[0054] Usually, the wastewater solenoid valve 301 has three states: fully open, half-open and half-closed, and fully closed. When using the wastewater solenoid valve 301, it can be de-energized to keep it in the half-open and half-closed state. When flushing the reverse osmosis membrane filter element 104, the wastewater solenoid valve 301 can be energized to make it fully open. In this way, when the booster pump 101 starts working, the water flow flushes the surface of the filter element, and the dirt on the surface of the filter element is discharged through the wastewater waterway 300 in time.

[0055] Therefore, the wastewater solenoid valve 301 provided on the wastewater waterway 300 can not only be used to control the exhaust of wastewater during the operation of the reverse osmosis membrane filter element 104, but also help to backwash the surface of the reverse osmosis membrane, prevent the reverse osmosis membrane from being blocked early, and extend the service life of the reverse osmosis membrane.

[0056] In some embodiments, a pure water solenoid valve 204 is provided on the pure water waterway 200 , the water inlet of the pure water solenoid valve 204 is connected to the pure water port of the reverse osmosis membrane filter element 104 , and the water outlet of the pure water solenoid valve 204 is connected to the water inlet of the clean water tank 201 .

[0057] In this embodiment, a raw water TDS sensor 103 is provided on the raw water channel 100, and a pure water TDS sensor 205 is provided on the pure water channel 200. The positions of the raw water TDS sensor 103 on the raw water channel 100 and the pure water TDS sensor 205 on the pure water channel 200 are not specifically limited. The two TDS sensors are used to monitor the TDS value of the water in each water channel and feed it back to the control system of the whole machine.

[0058] The two TDS sensors, the booster pump 101, the water pump 202, the pure water solenoid valve 204 and the waste water solenoid valve 301 of this embodiment are electrically connected to the control system of the entire system respectively. The two TDS sensors respectively detect the TDS values ​​and feed them back to the control system of the whole machine. The control system of the whole machine then decides the start and stop of the booster pump 101 and the water pump 202 according to the detected TDS values.

[0059] For example, when the raw water TDS sensor 103 detects that the raw water TDS value of the tap water in the raw water circuit 100 exceeds the set value, the whole machine control system controls the self-priming booster pump 101 to stop working, the water pump 202 to start working, the pure water solenoid valve 204 to close, the waste water solenoid valve 301 to open, and at the same time, the AC channel of the three-way valve 203 is opened, and the AB channel is closed. The pure water stored in the clean water tank 201 flows into the composite filter element 102 and the reverse osmosis membrane filter element 104 through the three-way valve 203 and the flushing water circuit 400 under the pressure of the water pump 202, and the pure water is mixed with the high-concentration mixed water accumulated in the composite filter element 102 and the reverse osmosis membrane filter element 104, and finally flows into the raw water tank 600 from the waste water circuit 300.

[0060] That is, after the whole machine stops making water, the composite filter element 102 and the reverse osmosis membrane filter element 104 are soaked and rinsed with pure water stored in the clean water tank 201. Since pure water has fewer impurities, it can remove dirt and deposited salt on the surface of the filter element, improve the filtering capacity of the filter element, and thus extend the service life of the filter element. At the same time, pure water with a lower TDS value replaces the high-concentration mixed water accumulated in the filter element, reducing the concentration difference between the concentrated water side and the pure water side of the reverse osmosis membrane filter element 104, slowing down the penetration effect of salt substances, so that after the whole machine stops for a period of time, when water is taken again, the TDS value of the first cup of water will not be too high, and the first cup of water can be drunk directly.

[0061] In some embodiments, a liquid level sensing switch (not shown in the figure) is provided in the clean water tank 201 in the water system, and the liquid level sensing switch is used to monitor the maximum water level in the clean water tank 201.

[0062] The liquid level sensing switch is also electrically connected to the control system of the whole machine. When the liquid level sensing switch installed in the clean water tank 201 detects that the clean water tank 201 is full of water, water production is stopped, and the control system of the whole machine will control the water inlet solenoid valve 105 to close and the booster pump 101 to stop working.

[0063] When the liquid level sensing switch detects that the liquid level in the clean water tank 201 decreases, the whole machine control system will control the water inlet solenoid valve 105 to open and the booster pump 101 to start working, and replenish water into the clean water tank 201, so that the clean water tank 201 is always full of water.

[0064] like Figure 3 As shown, in some embodiments, the raw water circuit 100 is provided with a tap water inlet interface 106 , and the waste water circuit 300 is provided with a waste water outlet interface 302 .

[0065] The raw water circuit 100 can be connected to the water outlet of the raw water tank 600 through the tap water inlet interface 106 , and the waste water circuit 300 can be connected to the water inlet of the raw water tank 600 through the waste water outlet interface 302 .

[0066] At the same time, the raw water circuit 100 can also be connected to a tap water pipe (such as municipal tap water) through a tap water inlet interface 106 and a water inlet three-way ball valve 107 .

[0067] The quality of municipal tap water in different regions varies greatly. If only a single water source such as the raw water tank 600 is used for water supply without taking into account the water quality differences in different regions, the application scope of the water purifier will be limited. For example, in areas with poor tap water quality, after wastewater is mixed with unfiltered tap water, the water quality of the mixed water in the raw water tank 600 deteriorates more significantly, and users need to replace the filter cartridge more frequently; conversely, in areas with good tap water quality, users need to replace the filter cartridge less frequently.

[0068] Therefore, since the quality of tap water in different places is different, the user can select a water source based on the TDS content of the tap water in the raw water channel 100 detected by the raw water TDS sensor 103 .

[0069] For example, when the raw water TDS sensor 103 detects that the TDS value of tap water is less than a preset value, it indicates that the tap water quality in the user's area is good. The user can use the raw water tank 600 containing tap water as a water source without installing water source pipelines, which is more convenient for users.

[0070] When the TDS value of tap water monitored by the raw water TDS sensor 103 is greater than the preset value, it means that the tap water quality in the user's area is poor. The user can directly connect the tap water inlet interface 106 and the inlet three-way ball valve 107 on the raw water waterway 100 to the tap water pipe to purify the municipal tap water, while the wastewater outlet interface 302 is not connected to anything, and the wastewater generated by the filtration system is directly discharged, so that there is no mixing of wastewater and unfiltered tap water.

[0071] The water system of this embodiment can monitor the water quality of municipal tap water in real time. Users can choose the corresponding raw water supply method according to the water quality monitoring situation. In terms of use, it takes into account the differences in water quality in different regions, broadens the application scope of the water purifier, and meets the requirements of users in different water quality areas.

[0072] The embodiment of the utility model also provides a drinking water purification device, which includes a water system as described in any of the above embodiments. After the water system is applied to the water purification device, the water safety of the water purification device can be improved, and healthy drinking water can be provided to users.

[0073] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A waterway system, comprising a raw waterway (100), a pure waterway (200), a wastewater waterway (300) and a water-using device (500), wherein a reverse osmosis membrane filter element (104) is provided on the raw waterway (100), and the wastewater waterway (300) is connected to a wastewater outlet of the reverse osmosis membrane filter element (104), characterized in that: The pure water waterway (200) is provided with a clean water tank (201), a water pump (202) and a three-way valve (203); the water inlet of the clean water tank (201) is connected to the pure water port of the reverse osmosis membrane filter element (104); the water inlet of the water pump (202) is connected to the water outlet of the clean water tank (201); the water outlet of the water pump (202) is connected to the water inlet of the three-way valve (203); and the first water outlet of the three-way valve (203) is connected to the water-using equipment (500); The water system further comprises a flushing water circuit (400), wherein a first end of the flushing water circuit (400) is connected to a second water outlet of the three-way valve (203), and a second end of the flushing water circuit (400) is connected to an upstream region of the reverse osmosis membrane filter element (104) on the flushing water circuit (400).

2. A waterway system according to claim 1, characterized in that: The raw water circuit (100) is also provided with a booster pump (101) and a composite filter element (102); the water inlet of the booster pump (101) is connected to a water source; the water outlet of the booster pump (101) is connected to the water inlet of the composite filter element (102); and the water outlet of the composite filter element (102) is connected to the water inlet of the reverse osmosis membrane filter element (104).

3. A waterway system according to claim 2, characterized in that: The water circuit system further comprises a raw water tank (600), the water inlet of the booster pump (101) is connected to the water outlet of the raw water tank (600), and the wastewater circuit (300) is connected to the water inlet in the raw water tank (600).

4. A waterway system as claimed in claim 3, characterized in that: The wastewater waterway (300) is provided with a wastewater solenoid valve (301), the water inlet of the wastewater solenoid valve (301) is connected to the wastewater outlet of the reverse osmosis membrane filter element (104), and the water outlet of the wastewater solenoid valve (301) is connected to the water inlet of the raw water tank (600); The pure water waterway (200) is provided with a pure water solenoid valve (204), the water inlet of the pure water solenoid valve (204) is connected to the pure water port of the reverse osmosis membrane filter element (104), and the water outlet of the pure water solenoid valve (204) is connected to the water inlet of the clean water tank (201).

5. A waterway system as claimed in claim 3, characterized in that: A water inlet solenoid valve (105) is provided between the water outlet of the raw water tank (600) and the water inlet of the booster pump (101).

6. A waterway system as claimed in claim 3, characterized in that: The raw water circuit (100) is provided with a tap water inlet interface (106), and the waste water circuit (300) is provided with a waste water outlet interface (302); the tap water inlet interface (106) can be selectively connected to a tap water supply pipeline and a raw water tank (600), and the waste water outlet interface (302) can be detachably connected to the raw water tank (600).

7. A waterway system according to claim 6, characterized in that: The raw water channel (100) and the pure water channel (200) are respectively provided with TDS sensors.

8. A waterway system as claimed in claim 2, characterized in that: A one-way valve (401) is provided on the flushing water circuit (400), the water inlet of the one-way valve (401) is connected to the second water outlet of the three-way valve (203), and the water outlet of the one-way valve (401) is connected to the water inlet of the booster pump (101) or the water inlet of the composite filter element (102).

9. A waterway system according to claim 1, characterized in that: A liquid level sensing switch is provided in the clean water tank (201), and the liquid level sensing switch is used to monitor the highest water level in the clean water tank (201).

10. A drinking water purification device, characterized in that: A waterway system comprising any one of claims 1-9.

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