Waterway system and water purification equipment

Abstract

The present invention discloses a water path system and a water purification device. Among them, the water path system has a water production state, a water storage state, and a flushing state. The water path system includes: a purified water path, a water storage container, a flushing water path, a drainage water path, a connection water path, and a control module. The control module is used to control the switching of the water path system among the water production state, the water storage state, and the flushing state according to the opening signal or closing signal of the faucet. Since the water path system proposed in this application has a water production state, a water storage state, and a flushing state, when the water path system stands still for a long time and the faucet is opened, the pure water in the water storage container flows through the flushing water path to the reverse osmosis filtration device, and the wastewater after flushing the reverse osmosis filtration device is discharged through the drainage water path. Thus, the water with a high TDS value in the reverse osmosis filtration device can be flushed clean. In this way, when the faucet is opened to produce water, the TDS value of the first glass of water flowing out of the faucet can be significantly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and particularly to a water circuit system and a water purification equipment. Background Art

[0002] The solution-diffusion theory holds that the RO membrane is a complete membrane without pores. Water molecules and solutes such as salts can dissolve in the membrane. Under the action of an external pressure, the water molecules and solute molecules dissolved in the membrane will diffuse to the other side of the RO membrane, but the diffusion rates are different. When normal water production occurs, the diffusion rate of water molecules under the external pressure is much greater than that of solute molecules. Therefore, water molecules will quickly pass through the RO membrane while most solute molecules will accumulate on the raw water side, thus realizing the separation of solute molecules and water molecules.

[0003] However, when the water purifier stops operating and stands still for a long time, the concentration of solute molecules on the raw water side is much higher than that on the pure water side. Under the drive of the concentration gradient, solute diffusion will occur. Solute molecules will gradually pass through the RO membrane and finally reach diffusion equilibrium. This will cause the TDS (Total Dissolved Solids, which indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. The higher the TDS value, the more dissolved substances the water contains) of the water on the pure water side to increase. Therefore, when the water purifier starts to produce water again, the first glass of water received by the user is the water with a high TDS value flowing out of the RO membrane element, and the water quality cannot meet the requirements. Summary of the Invention

[0004] The main object of the present invention is to propose a water circuit system, aiming to reduce the TDS value of the first glass of water.

[0005] To achieve the above object, the water circuit system proposed by the present invention has a water production state, a water storage state, and a flushing state. The water circuit system includes: a purified water circuit, on which a first inlet solenoid valve and a reverse osmosis filtration device are provided. The purified water circuit has a first inlet end and a first outlet end, and a faucet is provided on the first outlet end; a water storage container, which has a first inlet and a first outlet, and the first inlet is connected to the first outlet end; a flushing circuit, on which a second inlet solenoid valve is provided; the flushing circuit has a second inlet end and a second outlet end, the second inlet end is connected to the first outlet end, and the second outlet end is connected to the inlet of the reverse osmosis filtration device; a drainage circuit, which is connected to the wastewater outlet of the reverse osmosis filtration device; a connecting circuit, which is connected to the pure water outlet of the reverse osmosis filtration device and the drainage outlet of the drainage circuit, and a third inlet solenoid valve is provided on the connecting circuit; and a control module, which is respectively connected to the faucet, the first inlet solenoid valve, the second inlet solenoid valve, and the third inlet solenoid valve. The control module is used to control the switching of the water circuit system between the water production state, the water storage state, and the flushing state according to the open signal or the close signal of the faucet.

[0006] Preferably, when the control module receives the first trigger signal for the faucet to open, it controls the first inlet solenoid valve to open, controls the second inlet solenoid valve to close, and controls the third inlet solenoid valve to close. The pure water flowing out of the reverse osmosis filtration device flows to the faucet, so that the water circuit system is in the water production state.

[0007] Preferably, when the control module receives the second trigger signal for the faucet to close, it controls the first inlet solenoid valve to open, controls the second inlet solenoid valve to close, and controls the third inlet solenoid valve to close. The pure water flowing out of the reverse osmosis filtration device flows to the water storage container, so that the water circuit system is in the water storage state.

[0008] Preferably, when the closing duration of the faucet reaches a preset duration, the control module controls the first inlet solenoid valve to close, controls the second inlet solenoid valve to open, and controls the third inlet solenoid valve to open. The water in the water storage container flows to the inlet of the reverse osmosis filtration device and is discharged through the drainage circuit after flushing the reverse osmosis filtration device, so that the water circuit system is in the flushing state.

[0009] Preferably, a water inlet pipeline is connected between the first inlet and the first outlet end, and a fourth inlet solenoid valve is provided on the water inlet pipeline; the control module is connected to the fourth inlet solenoid valve.

[0010] Preferably, an upper water level switch is provided in the water storage container. The upper water level switch is connected to the control module. The upper water level switch is used to detect the upper water level in the water storage container. The control module is used to control the closing of the first water inlet solenoid valve and / or the fourth water inlet solenoid valve when the upper water level is reached.

[0011] Preferably, a lower water level switch is further provided in the water storage container. The lower water level switch is connected to the control module. The lower water level switch is used to detect the lower water level in the water storage container. The control module is used to control the opening of the first water inlet solenoid valve and the fourth water inlet solenoid valve when the lower water level is reached.

[0012] Preferably, the booster pump is located between the second water outlet end and the water inlet of the reverse osmosis filtration device. The booster pump is also used to pump the pure water in the water storage container to the water inlet of the reverse osmosis filtration device.

[0013] Preferably, a pre-filter is further provided on the purified water path. The pre-filter is located between the first water inlet end and the first water inlet solenoid valve.

[0014] Preferably, the pre-filter includes a composite filter element. The composite filter element includes an activated carbon rod and a PP cotton wrapped around the activated carbon rod.

[0015] Preferably, a post-filter is further provided on the purified water path. The post-filter is located between the first water outlet end and the pure water outlet of the reverse osmosis filtration device.

[0016] The present invention also provides a water purification device, which includes the water circuit system. The water circuit system has a water production state, a water storage state, and a flushing state. The water circuit system includes: a purified water circuit, on which a first inlet solenoid valve and a reverse osmosis filtration device are provided. The purified water circuit has a first inlet end and a first outlet end, and a faucet is provided on the first outlet end; a water storage container, which has a first inlet and a first outlet, and the first inlet is connected to the first outlet end; a flushing circuit, on which a second inlet solenoid valve is provided; the flushing circuit has a second inlet end and a second outlet end, the second inlet end is connected to the first outlet end, and the second outlet end is connected to the inlet of the reverse osmosis filtration device; a drainage circuit, which is connected to the wastewater outlet of the reverse osmosis filtration device; a connection circuit, which is connected to the pure water outlet of the reverse osmosis filtration device and the drainage outlet of the drainage circuit, and a third inlet solenoid valve is provided on the connection circuit; and a control module, which is respectively connected to the faucet, the first inlet solenoid valve, the second inlet solenoid valve, and the third inlet solenoid valve. The control module is used to control the switching of the water circuit system among the water production state, the water storage state, and the flushing state according to the opening signal or closing signal of the faucet.

[0017] The water circuit system proposed by the present invention has a water production state, a water storage state, and a flushing state. When the water circuit system is stationary for a long time and the faucet is opened, the pure water in the water storage container flows through the flushing circuit to the reverse osmosis filtration device, and the wastewater after flushing the reverse osmosis filtration device is discharged through the drainage circuit, so that the water with a high TDS value in the reverse osmosis filtration device can be flushed clean. In this way, when the faucet is opened to produce water, the TDS value of the first glass of water flowing out of the faucet can be significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the water circuit structure of an embodiment of the water circuit system of the present invention (the water circuit system is in the water production state);

[0020] Figure 2 For Figure 1 Another schematic diagram of the water circuit structure (the water circuit system is in the water storage state);

[0021] Figure 3 For Figure 1Schematic diagram of the waterway structure in another state (the waterway system is in the flushing state).

[0022] Description of the reference numerals in the drawings:

[0023] Label Name Label Name 10 Purified water waterway 300 Third inlet solenoid valve 20 Water storage container 400 Fourth inlet solenoid valve 30 Flushing waterway 500 Booster pump 40 Drainage waterway 600 Reverse osmosis filter 50 Connecting waterway 700 Faucet 60 Inlet waterway 800 Prefilter 70 Waste water ratio valve 900 Postfilter 21 Upper water level switch 610 Water inlet 22 Lower water level switch 620 Pure water outlet 100 First inlet solenoid valve 630 Waste water outlet 200 Second inlet solenoid valve

[0024] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] The present invention provides a waterway system that can flush a reverse osmosis filtration device, thereby reducing the total dissolved solids in the first glass of water.

[0029] In an embodiment of the present invention, as Figures 1 to 3As shown, the water circuit system has a water production state, a water storage state, and a flushing state. The water circuit system includes: a purified water circuit 10, a water storage container 20, a flushing circuit 30, a drainage circuit 40, a connecting circuit 50, and a control module (not shown in the figure). Among them, a first inlet solenoid valve 100 and a reverse osmosis filtration device are provided on the purified water circuit 10. The purified water circuit 10 has a first inlet end and a first outlet end, and a faucet 700 is provided on the first outlet end; the water storage container 20 has a first inlet and a first outlet, and the first inlet is connected to the first outlet end; a second inlet solenoid valve 200 is provided on the flushing circuit 30; the flushing circuit 30 has a second inlet end and a second outlet end, the second inlet end is connected to the first outlet, and the second outlet end is connected to the inlet 610 of the reverse osmosis filtration device; the drainage circuit 40 is connected to the waste water outlet 630 of the reverse osmosis filtration device; the connecting circuit 50 is connected to the pure water outlet 620 of the reverse osmosis filtration device and the drainage outlet of the drainage circuit 40. A third inlet solenoid valve 300 is provided on the connecting circuit 50. The control module is respectively connected to the faucet 700, the first inlet solenoid valve 100, the second inlet solenoid valve 200, and the third inlet solenoid valve 300. The control module is used to control the switching of the water circuit system between the water production state, the water storage state, and the flushing state according to the opening signal or closing signal of the faucet 700.

[0030] As Figure 1 shown, when the water circuit system is in the water production state, the faucet 700 is open, and the pure water produced by the purified water circuit 10 flows out from the faucet 700. Under normal circumstances, the faucet 700 will flow out pure water with a low TDS value, but when the water circuit system is stationary for a long time, the faucet 700 will flow out pure water with a high TDS value;

[0031] As Figure 2 shown, when the water circuit system is in the water storage state, the faucet 700 is closed, and the pure water produced by the purified water circuit 10 flows into the water storage container 20. Since after the water production state is completed, that is, after the faucet 700 is closed, it enters the water storage state, the pure water flowing into the water storage container 20 is pure water with a low TDS value;

[0032] As Figure 3 shown, when the water circuit system is in the flushing state, the faucet 700 is closed, and the pure water with a low TDS value in the water storage container 20 flows to the inlet 610 of the reverse osmosis filtration device, thereby flushing the reverse osmosis filtration device. The waste water flows out from the waste water outlet 630 of the reverse osmosis filtration device, and the waste water is discharged through the drainage outlet of the drainage circuit 40. The pure water with a high TDS value after flushing the reverse osmosis filtration device flows out from the pure water outlet 620 of the reverse osmosis filtration device. The pure water with a high TDS value flows into the drainage circuit 40 through the connecting circuit 50 and is finally discharged from the drainage outlet of the drainage circuit.

[0033] Since the waterway system proposed in this application has a water production state, a water storage state, and a flushing state, when the waterway system is stationary for a long time and the faucet 700 is opened, the pure water in the water storage container 20 flows through the flushing waterway 30 to the reverse osmosis filtration device, and the wastewater after flushing the reverse osmosis filtration device is discharged through the drainage waterway 40, so that the water with a high TDS value in the reverse osmosis filtration device can be flushed clean. In this way, when the faucet 700 is opened to produce water, the TDS value of the first glass of water flowing out through the faucet 700 can be significantly reduced.

[0034] It should be noted here that in this embodiment, the faucet 700 is an electronic faucet, the control module is integrated on the electronic faucet, and a sensor is provided on the faucet 700, so that different detection signals can be obtained when the faucet 700 is opened or closed. For example, the sensor can be a pressure sensor. In this way, when the faucet 700 is opened or closed, the pressure sensor can generate different detection signals. The signal input end of the control module is connected to the sensor of the faucet 700, and the signal input end of the control module is connected to the first water inlet solenoid valve 100 and the second water inlet solenoid valve 200. The specific connection method can be a wired connection or a wireless connection such as Bluetooth, WiFi, NFC, etc. The first water inlet solenoid valve 100 and the second water inlet solenoid valve 200 are both normally closed solenoid valves, that is, they are in a closed state in the initial state and are in an open state when receiving the control signal of the control module. The function of the water inlet solenoid valve is to open the water inlet during water production or flushing and close the water inlet during standby or shutdown, so as to achieve the purpose of not wasting water when the waterway system is not working. Generally, the preset duration is 10 minutes to 60 minutes.

[0035] In addition, strictly speaking, the first glass of water can refer to a range, not the first glass of water. Specifically, for a large-flux water purifier, taking a 400G flux water purifier as an example (G, gallon, which means gallon, is a unit of volume, and 1 gallon of water is about 3.79 liters)), when testing the TDS of the "first glass of water", it is found that the pure water with a high TDS value is mainly concentrated in the first, second, third, and fourth glasses of pure water (200 ml of water is received each time), and the total amount of pure water with a high TDS value is about 800 ml. Therefore, the preset water level of the water storage container 20 is generally greater than or equal to 800 ml. Correspondingly, the volume of the water storage container 20 is 1L to 2L.

[0036] Furthermore, as Figure 1As shown in the figure, the opening and closing conditions of the first water inlet solenoid valve 100, the second water inlet solenoid valve 200, and the third water inlet solenoid valve 300 in the water production state will be described. In the water production state, the faucet 700 is opened. The control module is used to control the first water inlet solenoid valve 100 to open, control the second water inlet solenoid valve 200 to close, and control the third water inlet solenoid valve 300 to close when receiving the first trigger signal that the faucet 700 is opened. The pure water flowing out of the reverse osmosis filtration device flows to the faucet 700, so that the water circuit system is in the water production state.

[0037] Specifically, when the faucet 700 is opened, the first water inlet solenoid valve 100 is opened, the second water inlet solenoid valve 200 is closed, and the third water inlet solenoid valve 300 is closed, the water circuit system is in the water production state. At this time, the water circuit system produces water normally.

[0038] Furthermore, as Figure 2 shown in the figure, the opening and closing conditions of the first water inlet solenoid valve 100, the second water inlet solenoid valve 200, and the third water inlet solenoid valve 300 in the water storage state will be described. In the water storage state, the faucet 700 is closed. The control module is used to control the first water inlet solenoid valve 100 to open, control the second water inlet solenoid valve 200 to close, and control the third water inlet solenoid valve 300 to close when receiving the second trigger signal that the faucet 700 is closed. The pure water flowing out of the reverse osmosis filtration device flows to the water storage container 20, so that the water circuit system is in the water storage state.

[0039] Specifically, when the faucet 700 is closed, the first water inlet solenoid valve 100 is opened, the second water inlet solenoid valve 200 is closed, and the third water inlet solenoid valve 300 is closed, the water circuit system is in the water storage state. At this time, the pure water generated by the pure water circuit 10 flows into the water storage container 20.

[0040] Furthermore, as Figure 3 shown in the figure, the opening and closing conditions of the first water inlet solenoid valve 100, the second water inlet solenoid valve 200, and the third water inlet solenoid valve 300 in the flushing state will be described. In the flushing state, the faucet 700 is closed. The control module is used to control the first water inlet solenoid valve 100 to close, control the second water inlet solenoid valve 200 to open, and control the third water inlet solenoid valve 300 to open when the closing duration of the faucet 700 reaches a preset duration. The water in the water storage container 20 flows to the water inlet 610 of the reverse osmosis filtration device and is discharged through the drainage water circuit 40 after flushing the reverse osmosis filtration device, so that the water circuit system is in the flushing state.

[0041] Specifically, when the water faucet 700 is closed, the first inlet solenoid valve 100 is closed, the second inlet solenoid valve 200 is open, and the third inlet solenoid valve 300 is open, the water circuit system is in the flushing state. At this time, the pure water stored in the water storage container 20 can flush the reverse osmosis filtration device clean, so as to ensure that pure water with a low TDS value can flow out when the water faucet 700 is opened.

[0042] Further, please continue to refer to Figures 1 to 3 , in an embodiment of the present application, an inlet water circuit 60 is connected between the first water inlet and the first water outlet end, and a fourth inlet solenoid valve 400 is provided on the inlet water circuit 60; the control module is connected to the fourth inlet solenoid valve 400. Specifically, when the water faucet 700 is in the open state, the control module controls the first inlet solenoid valve 100 to open, and controls the second inlet solenoid valve 200, the third inlet solenoid valve 300, and the fourth inlet solenoid valve 400 to close. The pure water flowing out of the reverse osmosis filtration device flows to the water faucet 700, so that the water circuit system is in the water production state;

[0043] When the water faucet 700 is in the closed state, the control module controls the first inlet solenoid valve 100 and the fourth inlet solenoid valve 400 to open, and controls the second inlet solenoid valve 200 and the third inlet solenoid valve 300 to close. The pure water flowing out of the reverse osmosis filtration device flows to the water storage container 20, so that the water circuit system is in the water storage state;

[0044] When the water faucet 700 is in the closed state and the duration of the closed state reaches a preset duration, the control module controls the second inlet solenoid valve 200 and the third inlet solenoid valve 300 to open, and controls the first inlet solenoid valve 100 and the fourth inlet solenoid valve 400 to close. The water in the water storage container 20 flows to the water inlet 610 of the reverse osmosis filtration device, and after flushing the reverse osmosis filtration device, it is discharged through the drain water circuit 40, so that the water circuit system is in the flushing state.

[0045] Further, as Figure 2 shown, in order to prevent the pure water in the water storage container 20 from overflowing when it is too full, in an embodiment of the present application, a upper limit water level switch 21 is provided in the water storage container 20. The upper limit water level switch 21 is connected to the control module. The upper limit water level switch 21 is used to detect the upper limit water level in the water storage container 20. When the upper limit water level is reached, the control module controls the first inlet solenoid valve 100 to close. In this way, the purified water circuit 10 will not continue to input pure water into the water storage container 20, thus preventing the pure water in the water storage container 20 from overflowing when it is too full.

[0046] Specifically, in this embodiment, the upper limit water level switch 21 can be a floating ball. The floating ball drives the water inlet valve through a long handle. When the water level in the water storage container 20 is low, the water inlet valve is opened wide. When the water level reaches the upper limit water level, the floating ball drives the long handle to close the water inlet valve.

[0047] Further, as Figure 3 shown, in order to prevent the water level in the water storage container 20 from being too low, in an embodiment of the present application, a lower limit water level switch 22 is further provided in the water storage container 20. The lower limit water level switch 22 is connected to the control module. The lower limit water level switch 22 is used to detect the lower limit water level in the water storage container 20. When the lower limit water level is reached, the control module controls the first water inlet solenoid valve 100 to open and controls the second water inlet solenoid valve 200 to close. In this way, it can ensure that there is enough pure water in the water storage container 20, so as to ensure the flushing effect on the reverse osmosis filtration device.

[0048] Specifically, in this embodiment, the lower limit water level switch 22 can be a liquid level sensor. Preferably, in this embodiment, the lower limit water level switch 22 is an optoelectronic liquid level sensor, which has the advantages of accurate measurement, high precision, fast response speed, and low power consumption.

[0049] Further, as Figures 1 to 3 shown, the structure of the reverse osmosis filtration device will be described in detail. In this embodiment, the reverse osmosis filtration device includes a booster pump 500 and a reverse osmosis filter 600 connected in sequence. The reverse osmosis filter 600 has the water inlet 610, the pure water outlet 620, and the wastewater outlet 630; the booster pump 500 is located between the second water outlet end and the water inlet 610 of the reverse osmosis filter 600.

[0050] The booster pump 500 has the following two functions. First, the booster pump 500 is used to pressurize the raw water flowing into the water inlet 610 of the reverse osmosis filter 600, so as to promote the raw water to flow through the reverse osmosis membrane of the reverse osmosis filter 600; more importantly, since the booster pump 500 is arranged between the second water outlet end of the water storage container 20 and the water inlet 610 of the reverse osmosis filter 600, therefore, the booster pump 500 can also pump the pure water in the water storage container 20 to the water inlet 610 of the reverse osmosis filter 600.

[0051] However, the design of the present application is not limited thereto. In other embodiments, the reverse osmosis filtration device may also include a negative pressure device (not shown in the figure) and the reverse osmosis filter 600 at the same time. The negative pressure device is used to suck the raw water into the water inlet 610 of the reverse osmosis filter 600.

[0052] Further, please continue to refer to Figures 1 to 3, in order to improve the purity of pure water, in an embodiment of the present application, a pre-filter 800 is further provided on the water purification waterway 10, and the pre-filter 800 is located between the first water inlet end and the first water inlet solenoid valve 100. Specifically, in this embodiment, the pre-filter 800 includes a PAC composite filter element, and the PAC composite filter element includes an activated carbon rod and a PP cotton coated on the activated carbon rod. In this way, sediment and bacteria in the water can be effectively filtered, thereby improving the purity of the raw water.

[0053] Further, please still refer to Figures 1 to 3 , in order to improve the taste of pure water, in an embodiment of the present application, a post-filter 900 is further provided on the water purification waterway 10, and the post-filter 900 is located between the first water outlet end and the pure water port 620 of the reverse osmosis filtration device. Specifically, the post-filter 900 includes an activated carbon filter element, and the activated carbon filter element can effectively remove organic substances, residual chlorine and other radioactive substances in the water, and has the effect of removing peculiar smell. Therefore, the taste of pure water can be improved.

[0054] The present invention also proposes a water purification device (not shown in the figure), which includes the waterway system, and the specific structure of the waterway system refers to the above embodiment. Since the water purifier proposed in the present application adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. In this embodiment, the water purification device is a water purifier.

[0055] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields are all included in the patent protection scope of the present invention.

Claims

1. A waterway system, the waterway system having a water production state, a water storage state, and a flushing state, characterized in that The waterway system includes: A purified water waterway, on which a first inlet solenoid valve and a reverse osmosis filtration device are provided. The purified water waterway has a first inlet end and a first outlet end, and a faucet is provided on the first outlet end; A water storage container, which has a first inlet and a first outlet, and the first inlet is connected to the first outlet end; A flushing waterway, on which a second inlet solenoid valve is provided; the flushing waterway has a second inlet end and a second outlet end, the second inlet end is connected to the first outlet end, and the second outlet end is connected to the inlet of the reverse osmosis filtration device; A drainage waterway, which is connected to the waste water outlet of the reverse osmosis filtration device; A connecting waterway, which is connected to the pure water outlet of the reverse osmosis filtration device and the drainage outlet of the drainage waterway, and a third inlet solenoid valve is provided on the connecting waterway; an inlet waterway is connected between the first inlet and the first outlet end, and a fourth inlet solenoid valve is provided on the inlet waterway; and, A control module, which is respectively connected to the faucet, the first inlet solenoid valve, the second inlet solenoid valve, the third inlet solenoid valve and the fourth inlet solenoid valve. The faucet is an electronic faucet, the control module is integrated on the electronic faucet, and a sensor is provided on the faucet. The control module is used to control the waterway system to switch between the water production state, the water storage state and the flushing state according to the opening signal or closing signal of the faucet; The control module is used to control the first inlet solenoid valve to open, the second inlet solenoid valve to close, the third inlet solenoid valve to close, and the fourth inlet solenoid valve to close when receiving the first trigger signal of the faucet opening, so that the pure water flowing out of the reverse osmosis filtration device flows to the faucet, so that the waterway system is in the water production state; A lower limit water level switch is provided in the water storage container. The lower limit water level switch is an optoelectronic liquid level sensor. The lower limit water level switch is used to detect the lower limit water level in the water storage container, and the lower limit water level is greater than or equal to 800 ml; when the closing duration of the faucet reaches a preset duration, the waterway system enters the flushing state, and the preset duration is 10 minutes to 60 minutes.

2. The waterway system according to claim 1, wherein, The control module is used to control the first inlet solenoid valve to open, the second inlet solenoid valve to close, and the third inlet solenoid valve to close when receiving the second trigger signal of the faucet closing, so that the pure water flowing out of the reverse osmosis filtration device flows to the water storage container, so that the waterway system is in the water storage state.

3. The waterway system according to claim 1, wherein The control module is used to control the first inlet solenoid valve to close, the second inlet solenoid valve to open, the third inlet solenoid valve to open when the closing duration of the faucet reaches the preset duration, so that the water in the water storage container flows to the inlet of the reverse osmosis filtration device, and after flushing the reverse osmosis filtration device, it is discharged through the drainage waterway, so that the waterway system is in the flushing state.

4. The waterway system according to any one of claims 1 to 3, characterized in that An upper limit water level switch is provided in the water storage container. The upper limit water level switch is connected to the control module. The upper limit water level switch is used to detect the upper limit water level in the water storage container. The control module is used to control the closing of the first water inlet solenoid valve and / or the fourth water inlet solenoid valve when the upper limit water level is reached.

5. The waterway system according to claim 4, characterized in that, The lower limit water level switch is connected to the control module. The control module is used to control the opening of the first water inlet solenoid valve and the fourth water inlet solenoid valve when the lower limit water level is reached.

6. The waterway system according to claim 1, characterized in that, The booster pump is located between the second water outlet end and the water inlet of the reverse osmosis filtration device. The booster pump is also used to pump the pure water in the water storage container to the water inlet of the reverse osmosis filtration device.

7. The waterway system according to claim 1, characterized in that, A pre-filter is further provided on the purified water path. The pre-filter is located between the first water inlet end and the first water inlet solenoid valve.

8. The waterway system according to claim 7, characterized in that The pre-filter includes a composite filter element. The composite filter element includes an activated carbon rod and a PP cotton covering the activated carbon rod.

9. The waterway system according to claim 7, wherein A post-filter is further provided on the purified water path. The post-filter is located between the first water outlet end and the pure water outlet of the reverse osmosis filtration device.

10. A water purification device, characterized in that, It includes the water path system according to any one of claims 1 to 9.

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