Water purification system for removing residual water and washing with pure water

Abstract

The utility model discloses a water purification system for removing residual water and washing with pure water, which comprises a water inlet pipe, a water outlet pipe and a water outlet pipe, the water inlet end of the booster pump communicates with the outlet end of the water inlet pipe; a raw water inlet, a pure water outlet and a wastewater outlet are formed in the four-in-one filter element, the raw water inlet is communicated with the water outlet end of the booster pump through a first pipeline, the pure water outlet is communicated with the water inlet end of the faucet through a second pipeline, and a second electromagnetic valve is arranged on the second pipeline; one end of the water removal pipeline is communicated with a pipe body, located at the downstream of the first electromagnetic valve and the upstream of the booster pump, of the water inlet pipe, the other end of the water removal pipeline is communicated with the second pipeline, and a third electromagnetic valve is arranged on the water removal pipeline. The water removal pipeline is arranged on the second pipeline and the upstream pipeline of the booster pump, residual water in the second pipeline is sucked through the suction stroke of the booster pump, conveyed into the four-in-one filter element through the water removal pipeline and discharged from the waste water outlet, and therefore the beneficial effect of removing the residual water is achieved.

Description

Technical Field

[0001] The utility model relates to the field of water treatment. More specifically, the utility model relates to a water purification system for removing residual water and pure water flushing. Background Art

[0002] A water purifier is a water treatment appliance that filters water through various filter membranes and reverse osmosis membranes. It can effectively remove harmful substances such as floating substances, heavy metals, bacteria, viruses, residual chlorine, sediment, rust, and microorganisms in water. The treated water forms pure water, which has the effects of less harmful substances and excellent taste, and is deeply loved by consumers.

[0003] However, after pure water comes out of the faucet on the water purifier, due to the siphon effect, a part of the pure water will remain in the pipeline near the faucet. After the residual pure water stays in the pipeline for a certain period of time, it will deteriorate and is prone to breeding bacteria, Escherichia coli, etc. When users use it later, they will take out and use the deteriorated pure water, thus affecting people's drinking health.

[0004] Therefore, how to design the structure of the water purification system for removing residual water and pure water flushing to solve the above technical problems is worthy of deep consideration. Summary of the Invention

[0005] An object of the utility model is to solve at least the above problems and provide at least the advantages described later.

[0006] To achieve these objects and other advantages according to the utility model, a water purification system for removing residual water and pure water flushing is provided, including:

[0007] An inlet pipe provided with a first solenoid valve thereon;

[0008] A booster pump, the inlet end of which is communicated with the outlet end of the inlet pipe;

[0009] A four-in-one filter element having a raw water inlet, a pure water outlet, and a wastewater outlet. The raw water inlet is communicated with the outlet end of the booster pump through a first pipeline. The pure water outlet is communicated with the inlet end of the faucet through a second pipeline, and a second solenoid valve is provided on the second pipeline;

[0010] A water removal pipeline, one end of which is communicated with the pipe body of the inlet pipe downstream of the first solenoid valve and upstream of the booster pump, and the other end is communicated with the second pipeline. A third solenoid valve is provided on the water removal pipeline.

[0011] Preferably, it further includes a heat pipe, the water inlet end of which is communicated with the second pipeline, the water outlet end of the heat pipe is communicated with a first water pump, the water outlet end of the first water pump is communicated with a heater through a third pipeline, and the water outlet end of the heater is communicated with the faucet through a fourth pipeline. Wherein, a fourth electromagnetic valve and a fifth electromagnetic valve are correspondingly arranged on the heat pipe and the fourth pipeline;

[0012] It further includes a first water drainage branch pipe, one end of which is communicated with the third pipeline and the other end is communicated with the water drainage pipeline, and a sixth electromagnetic valve is arranged on the first water drainage branch pipe.

[0013] Preferably, the fifth electromagnetic valve is a reversing electromagnetic valve;

[0014] It further includes a temperature maintaining pipe, the water inlet end of which is communicated with the fourth pipeline, and the fifth electromagnetic valve is arranged at the communicating place. The water outlet end of the temperature maintaining pipe is communicated with a heat preservation water tank, and the water outlet of the heat preservation water tank is communicated with the pipe body of the heat pipe downstream of the fourth electromagnetic valve through a fifth pipeline, and a seventh electromagnetic valve is arranged on the fifth pipeline;

[0015] It further includes a second water drainage branch pipe, one end of which is communicated with the pipe body of the heat pipe downstream of the fourth electromagnetic valve and the other end is communicated with the water drainage pipeline, and an eighth electromagnetic valve is arranged on the second water drainage branch pipe.

[0016] Preferably, it further includes a cold pipe, the water inlet end of which is communicated with the second pipeline, the water outlet end of the cold pipe is communicated with a refrigeration water tank, the water outlet of the refrigeration water tank is communicated with a second water pump through a sixth pipeline, the outlet end of the second water pump is communicated with the pipe body of the second pipeline downstream of the second electromagnetic valve through a seventh pipeline, and a ninth electromagnetic valve and a tenth electromagnetic valve are correspondingly arranged on the cold pipe and the seventh pipeline. A valve is arranged at the water outlet end of the refrigeration water tank;

[0017] It further includes a third water drainage branch pipe, one end of which is communicated with the sixth pipeline and the other end is communicated with the water drainage pipeline, and a first Ⅰ electromagnetic valve is arranged on the third water drainage branch pipe.

[0018] Preferably, a pressure reducing valve is further arranged on the water inlet pipe downstream of the first electromagnetic valve.

[0019] Preferably, a negative pressure valve is further arranged on the heat pipe downstream of the fifth pipeline.

[0020] Preferably, a waste water pipe is communicated with the waste water outlet, and a second Ⅱ electromagnetic valve is arranged on the waste water pipe.

[0021] The utility model has at least the following beneficial effects:

[0022] First, the utility model is provided with a water removal pipe on the second pipe connected to the faucet and the upstream pipe of the booster pump. By using the suction lift of the booster pump, the residual water in the second pipe is sucked and transported through the water removal pipe to the four-in-one filter element, and discharged from the wastewater outlet of the four-in-one filter element, so as to achieve the beneficial effect of removing residual water.

[0023] Second, the utility model can flush the impurities on the reverse osmosis membrane and reduce the TDS value on the four-in-one filter element by sucking and transporting the residual pure water to the four-in-one filter element, so as to achieve the effect of flushing the filter element with pure water and effectively extend the service life of the filter element.

[0024] Other advantages, objectives and features of the utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the utility model. Brief Description of the Drawings

[0025] Figure 1 It is a pipeline connection diagram of the water purification system of one of the technical solutions of the utility model;

[0026] Figure 2 For Figure 1 It is an enlarged view of structure A in

[0027] Figure 3 For Figure 1 It is an enlarged view of structure B in

[0028] Figure 4 It is a side view of the four-in-one filter element of one of the technical solutions of the utility model.

[0029] Among them, the marks in each drawing are as follows:

[0030] Water inlet pipe 1, booster pump 2, first pipe 3, four-in-one filter element 4, raw water inlet 41, pure water outlet 42, wastewater outlet 43, second pipe 5, faucet 6, water removal pipe 7, heat pipe 8, first water pump 9, third pipe 10, heater 11, fourth pipe 12, first water removal branch pipe 13, temperature pipe 14, heat preservation water tank 15, fifth pipe 16, second water removal branch pipe 17, cold pipe 18, refrigeration water tank 19, sixth pipe 20, second water pump 21, seventh pipe 22, third water removal branch pipe 23, pressure reducing valve 24, negative pressure valve 25, first solenoid valve 26, second solenoid valve 27, third solenoid valve 28, fourth solenoid valve 29, fifth solenoid valve 30, sixth solenoid valve 31, seventh solenoid valve 32, eighth solenoid valve 33, ninth solenoid valve 34, tenth solenoid valve 35, first type I solenoid valve 36, second type II solenoid valve 37. Detailed Embodiment

[0031] The following further elaborates on the present utility model in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the text of the specification.

[0032] It should be noted that, unless otherwise specified, the experimental methods described in the following implementation schemes are all conventional methods, and the reagents and materials, unless otherwise specified, can all be obtained through commercial channels; in the description of the present utility model, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0033] As Figures 1 to 4 shown, the present utility model provides a water purification system for removing residual water and pure water flushing, comprising:

[0034] A water inlet pipe 1, on which a first solenoid valve 26 is provided; specifically, the water inlet end of the water inlet pipe 1 can be communicated with a water source, and the water entering the water inlet pipe 1 can be tap water, and the first solenoid valve 26 is used to control the connection and closing of the water inlet pipe 1 to control the flow of water through.

[0035] A booster pump 2, whose water inlet end is communicated with the outlet end of the water inlet pipe 1; specifically, the head of the booster pump 2 refers to its ability to lift a certain amount of water to a certain height, which can make the water entering from the inlet end of the water inlet pipe 1 pass through faster and be transported into the following four-in-one filter element 4 for filtration. The suction lift of the booster pump 2 refers to its ability to suck water from a lower place and lift it to a certain height, and can reverse suction the pure water remaining in the following second pipe 5 to remove the residual water.

[0036] Four-in-one filter element 4, which has a raw water inlet 41, a pure water outlet 42, and a wastewater outlet 43. The raw water inlet 41 is communicated with the water outlet end of the booster pump 2 through a first pipeline 3. The pure water outlet 42 is communicated with the water inlet end of the faucet 6 through a second pipeline 5. A second solenoid valve 27 is provided on the second pipeline 5. Specifically, the four-in-one filter element 4 integrates four filter elements of different materials into one filter element to improve the filtration efficiency and reduce the replacement cost, including PP cotton (polypropylene), activated carbon, RO membrane (reverse osmosis membrane), and other materials (usually one of high-precision PP cotton and front and rear activated carbon rods). Among them, the PP cotton is used to remove large particulate impurities in the water, such as sediment, rust, etc. The activated carbon is used to adsorb organic pollutants, residual chlorine, odors, etc. in the water. The RO membrane (reverse osmosis membrane) is used for deep purification and can effectively remove harmful substances such as bacteria, viruses, and heavy metal ions. The booster pump 2 pumps the tap water in the water inlet pipe 1 from the raw water inlet 41 into the four-in-one filter element 4. After the tap water is filtered by the four-in-one filter element 4, the generated pure water is discharged from the pure water outlet 42, enters the second pipeline 5. By opening the second solenoid valve 27, pure water can be supplied to the faucet 6 to meet the user's need for normal-temperature pure water.

[0037] Water removal pipeline 7, one end of which is communicated with the pipe body of the water inlet pipe 1 downstream of the first solenoid valve 26 and upstream of the booster pump 2, and the other end is communicated with the second pipeline 5. A third solenoid valve 28 is provided on the water removal pipeline 7. Specifically, the water inlet end of the water removal pipeline 7 is communicated with the second pipeline 5 through a tee. This tee can be located downstream of the second solenoid valve 27. The water outlet end of the water removal pipeline 7 can be communicated with the pipe body of the water inlet pipe 1 downstream of the first solenoid valve 26 and upstream of the booster pump 2 through another tee. When there is residual pure water in the second pipeline 5 after use, the first solenoid valve 26 is closed, and the water source does not supply water to the water inlet pipe 1. Then the booster pump 2, the second solenoid valve 27, and the third solenoid valve 28 are opened. The booster pump 2 uses its suction lift to suck the residual water in the second pipeline 5, and the residual water enters the pipe body of the water inlet pipe 1 downstream of the first solenoid valve 26 and upstream of the booster pump 2 through the water removal pipeline 7. Then the booster pump 2 uses its head to transport it into the four-in-one filter element 4 and discharges it from the wastewater outlet 43, completing the removal of the residual water in the second pipeline 5, preventing the pure water from deteriorating and breeding bacteria in the second pipeline 5. Among them, the setting of the position of the water outlet end of the water removal pipeline 7 can not only enable the booster pump 2 to suck the residual water using its suction lift, but also complete the water removal when the first solenoid valve 26 is closed without affecting the water supply of the water inlet pipe 1.

[0038] In the above technical solution, the third solenoid valve 28 is closed, and the first solenoid valve 26 and the booster pump 2 are opened. Tap water enters the booster pump 2 from the water inlet pipe 1 and is transported by the booster pump 2 to the four-in-one filter element 4. After the tap water is filtered by the four-in-one filter element 4, the generated pure water is discharged from the pure water outlet 42 and enters the second pipe 5. The second solenoid valve 27 is opened, and the water can be transported to the faucet 6 to provide pure water for the user. When the user finishes fetching water, the first solenoid valve 26 is closed. Due to the siphon effect, a part of the pure water will remain in the second pipe 5. At this time, the third solenoid valve 28 is opened, and the booster pump 2 uses its suction lift to suck the residual water in the second pipe 5, which enters the pipe body of the water inlet pipe 1 downstream of the first solenoid valve 26 and upstream of the booster pump 2 through the water removal pipe 7, and then is transported to the four-in-one filter element 4 by the booster pump 2 using its head and discharged from the wastewater outlet 43, completing the removal of the residual water in the second pipe 5, preventing the pure water from remaining in the second pipe 5 from deteriorating and breeding bacteria. Among them, when the residual pure water enters the four-in-one filter element 4, it will also wash the impurities on the reverse osmosis membrane, reducing the TDS value (the concentration of total dissolved solids in water) at the front stage of the four-in-one filter element 4, so as to realize flushing the four-in-one filter element 4 with the residual pure water in the pipe and extending the service life of the four-in-one filter element 4.

[0039] In another technical solution, a heat pipe 8 is further included. Its water inlet end is communicated with the second pipe 5. A first water pump 9 is communicated and provided at the water outlet end of the heat pipe 8. The water outlet end of the first water pump 9 is communicated and provided with a heater 11 through a third pipe 10. The water outlet end of the heater 11 is communicated with the faucet 6 through a fourth pipe 12. Among them, a fourth solenoid valve 29 and a fifth solenoid valve 30 are correspondingly provided on the heat pipe 8 and the fourth pipe 12; specifically, the first water pump 9 is a pumping water pump. The water inlet end of the heat pipe 8 can be communicated with the second pipe 5 through a tee pipe, and this tee pipe can be located upstream of the second solenoid valve 27. The second solenoid valve 27 is closed, the first solenoid valve 26 and the fourth solenoid valve 29 are opened. The pure water obtained by filtering through the four-in-one filter element 4 enters the heat pipe 8 from the second pipe 5. The first water pump 9 transports the water in the heat pipe 8 through the third pipe 10 to the heater 11 for heating. After heating to a certain temperature (usually 70 - 100 °C), the fifth solenoid valve 30 is opened, and then the water in the heater 11 enters the faucet 6 for the user to use high-temperature pure water;

[0040] It further includes a first water drainage branch pipe 13, one end of which is communicated with the third pipe 10, and the other end is communicated with the water drainage pipe 7. A sixth electromagnetic valve 31 is provided on the first water drainage branch pipe 13. Specifically, the water inlet end of the first water drainage branch pipe 13 is communicated with the third pipe 10 through a tee pipe, and the water outlet end of the first water drainage branch pipe 13 can be communicated with the water drainage pipe 7 through another tee pipe. This tee pipe can be located downstream of the third electromagnetic valve 28. After the user finishes taking out the hot water, due to the siphon effect, there is still some pure water remaining in the third pipe 10 and the fourth pipe 12. Close the fourth electromagnetic valve 29, open the fifth electromagnetic valve 30 and the booster pump 2. The booster pump 2 uses its suction lift to suck the residual water in the third pipe 10 and the fourth pipe 12, and enters the pipe body of the water inlet pipe 1 downstream of the first electromagnetic valve 26 and upstream of the booster pump 2 through the first water drainage branch pipe 13, and then the booster pump 2 uses its lift to transport it to the four-in-one filter element 4 and discharge it from the waste water outlet 43, completing the removal of the residual water in the third pipe 10 and the fourth pipe 12.

[0041] In another technical solution, the fifth electromagnetic valve 30 is a reversing electromagnetic valve;

[0042] It further includes a temperature control pipe 14, whose water inlet end is communicated with the fourth pipe 12, and a fifth solenoid valve 30 is provided at the communicating part. The water outlet end of the temperature control pipe 14 is communicated with a heat preservation water tank 15. The water outlet of the heat preservation water tank 15 is communicated with the pipe body of the heat pipe 8 downstream of the fourth solenoid valve 29 through a fifth pipe 16, and a seventh solenoid valve 32 is provided on the fifth pipe 16. Specifically, the temperature control pipe 14 can be communicated with the fourth pipe 12 by using a three-way pipe, and the fifth solenoid valve 30 is provided on this three-way pipe. The fifth solenoid valve 30 is set as a reversing solenoid valve, so that the temperature control pipe 14 and the water heater are respectively communicated with the faucet 6. An ultraviolet germicidal lamp or other bacteriostatic devices are provided in the heat preservation water tank 15. The fifth pipe 16 can be communicated with the heat pipe 8 by using another three-way pipe. After the user finishes taking out hot water, there is still some hot water in the heater 11. At this time, reverse the fifth solenoid valve 30 to make the temperature control pipe 14 communicate with the heater 11. The water in the heater 11 is transported into the temperature control pipe 14 by the first water pump 9, and then enters the heat preservation water tank 15 for heat preservation. The heat preservation temperature can be 45-70°C to form medium-temperature pure water. When all the high-temperature pure water is taken out, open the seventh solenoid valve 32 and the first water pump 9. The medium-temperature pure water in the heat preservation water tank 15 passes through the fifth pipe 16, and then is transported to the fourth pipe 12 and the faucet 6 by the first water pump 9 to supply medium-temperature water to the user. Start the heater 11, and the medium-temperature pure water in the heat preservation water tank 15 is transported into the heater 11 for heating. The heater 11 can directly heat the medium-temperature pure water to high-temperature pure water, greatly saving the heating time. And because the heat energy provided by the heater 11 per unit time is limited, heating from medium-temperature pure water to high-temperature pure water can provide more high-temperature pure water within a certain time than heating from normal-temperature pure water to high-temperature pure water.

[0043] It further includes a second water removal branch pipe 17, one end of which is communicated with the pipe body of the heat pipe 8 downstream of the fourth solenoid valve 29, and the other end is communicated with the water removal pipe 7. An eighth solenoid valve 33 is provided on the second water removal branch pipe 17. Specifically, the water inlet end of the second water removal branch pipe 17 can adopt a tee pipe to be communicated with the pipe body of the heat pipe 8 downstream of the fourth solenoid valve 29, and the water outlet end of the second water removal branch pipe 17 can be communicated with the water removal pipe 7 through another tee pipe. This tee pipe can be located downstream of the third solenoid valve 28. After the medium-temperature water is transported to the heater 11 or the fourth pipe 12, due to the siphon effect, there is some pure water remaining in the fifth pipe 16 and the pipe body of the heat pipe 8 downstream of the fourth solenoid valve 29. Close the seventh solenoid valve 32, open the eighth solenoid valve 33 and the booster pump 2. The booster pump 2 uses its suction lift to suck the residual water in the fifth pipe 16 and the pipe body of the heat pipe 8 downstream of the fourth solenoid valve 29, and enters the pipe body of the water inlet pipe 1 downstream of the first solenoid valve 26 and upstream of the booster pump 2 through the second water removal branch pipe 17 and the water removal pipe 7, and then the booster pump 2 uses its head to transport it to the four-in-one filter element 4 and discharge it from the waste water outlet 43, completing the removal of the residual water in the fifth pipe 16 and the pipe body of the heat pipe 8 downstream of the fourth solenoid valve 29.

[0044] In another technical solution, it further includes a cold pipe 18, the water inlet end of which is communicated with the second pipe 5, and the water outlet end of the cold pipe 18 is communicated with a refrigeration water tank 19. The water outlet of the refrigeration water tank 19 is communicated with a second water pump 21 through a sixth pipe 20. The outlet end of the second water pump 21 is communicated with the pipe body of the second pipe 5 downstream of the second solenoid valve 27 through a seventh pipe 22. A ninth solenoid valve 34 and a tenth solenoid valve 35 are correspondingly provided on the cold pipe 18 and the seventh pipe 22, and a valve is provided at the water outlet end of the refrigeration water tank 19. Specifically, the normal-temperature water in the refrigeration water tank 19 can be cooled by a condensing pipe, a compressor and a condensing pipe fan assembly provided in the refrigeration water tank 19. An antibacterial lamp is provided in the refrigeration water tank 19. The second water pump 21 is a water extraction pump. The water inlet end of the cold pipe 18 can be communicated with the second pipe 5 through a tee pipe, and this tee pipe can be located upstream of the second solenoid valve 27. Close the second solenoid valve 27, open the first solenoid valve 26 and the ninth solenoid valve 34. The pure water filtered by the four-in-one filter element 4 enters the cold pipe 18 from the second pipe 5, and then enters the refrigeration water tank 19 to cool the normal-temperature pure water to below the normal temperature to obtain ice-cold water. Open the tenth solenoid valve 35 and the second water pump 21. The second water pump 21 transports the ice-cold water in the refrigeration water tank 19 to the faucet 6 through the seventh pipe 22 and the second pipe 5 to supply ice-cold water to the user.

[0045] It further includes a third water removal branch pipe 23, one end of which is communicated with the sixth pipe 20, and the other end is communicated with the water removal pipe 7. A first electromagnetic valve 36 is provided on the third water removal branch pipe 23. Specifically, the water inlet end of the third water removal branch pipe 23 is communicated with the sixth pipe 20 through a tee pipe, and this tee pipe can be located upstream of the second water pump 21. The water outlet end of the third water removal branch pipe 23 can be communicated with the water removal pipe 7 through another tee pipe, and this tee pipe can be located downstream of the third electromagnetic valve 28. After the user takes out the ice-cold water, due to the siphon effect, there is still some pure water remaining in the sixth pipe 20, the seventh pipe 22, and the second pipe 5. Close the valve at the outlet end of the refrigeration water tank 19, open the tenth electromagnetic valve 35 and the booster pump 2. The booster pump 2 utilizes its suction lift to suck the residual water, and enters the pipe body of the water inlet pipe 1 that is downstream of the first electromagnetic valve 26 and upstream of the booster pump 2 through the third water removal branch pipe 23, and then the booster pump 2 utilizes its lift to transport it to the four-in-one filter element 4, and discharges it from the waste water outlet 43, completing the removal of the residual water in the sixth pipe 20, the seventh pipe 22, and the second pipe 5.

[0046] In another technical solution, a pressure reducing valve 24 is further provided on the water inlet pipe 1 and is located downstream of the first electromagnetic valve 26. Specifically, the pressure reducing valve 24 is located upstream of the booster pump 2. The pressure reducing valve 24 reduces the water pressure in the pipeline to ensure the safe and efficient operation of the water supply system. When the first electromagnetic valve 26 is opened, if the water pressure in the water inlet pipe 1 is too high, it is easy to damage the booster pump 2, while the pressure reducing valve 24 can reduce the high water pressure at the water inlet end of the water inlet pipe 1 to a safe and stable level, preventing damage to the booster pump 2.

[0047] In another technical solution, a negative pressure valve 25 is further provided on the heat pipe 8 and is located downstream of the fifth pipe 16. Specifically, the negative pressure valve 25 is used to control the negative pressure on the heat pipe 8 and the pipe body communicated with the heat pipe 8, preventing the negative pressure in the pipeline from damaging the system. When there is negative pressure in the pipeline, the negative pressure valve 25 will automatically open and suck in air to destroy the vacuum degree, thereby protecting the heat pipe 8 from being sucked flat.

[0048] In another technical solution, a waste water pipe is communicated with the waste water outlet 43, and a second electromagnetic valve 37 is provided on the waste water pipe. Specifically, the second electromagnetic valve 37 can be a one-way electromagnetic valve. The second electromagnetic valve 37 is used to control the connection and closing of the waste water pipe. When the second electromagnetic valve 37 is opened, the waste water generated by the four-in-one filter element 4 filtering tap water is discharged from the waste water outlet 43, and then discharged through the waste water pipe, and can be collected by a waste bucket.

[0049] Although the embodiments of the present utility model have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to specific details and the illustrated examples described herein.

Claims

1. A water purification system for removing residual water and rinsing with pure water, characterized in that, Comprising: A water inlet pipe, on which a first solenoid valve is provided; A booster pump, the water inlet end of which is communicated with the outlet end of the water inlet pipe; A four-in-one filter element, on which there are a raw water inlet, a pure water outlet, and a waste water outlet. The raw water inlet is communicated with the water outlet end of the booster pump through a first pipeline. The pure water outlet is communicated with the water inlet end of a faucet through a second pipeline, and a second solenoid valve is provided on the second pipeline; A water removal pipeline, one end of which is communicated with the pipe body of the water inlet pipe downstream of the first solenoid valve and upstream of the booster pump, and the other end of which is communicated with the second pipeline. A third solenoid valve is provided on the water removal pipeline.

2. The water purification system for removing residual water and pure water flushing according to claim 1, wherein It further includes a heat pipe, the water inlet end of which is communicated with the second pipeline. The water outlet end of the heat pipe is communicated with a first water pump. The water outlet end of the first water pump is communicated with a heater through a third pipeline. The water outlet end of the heater is communicated with the faucet through a fourth pipeline. Among them, a fourth solenoid valve and a fifth solenoid valve are correspondingly provided on the heat pipe and the fourth pipeline; It further includes a first water removal branch pipe, one end of which is communicated with the third pipeline and the other end of which is communicated with the water removal pipeline. A sixth solenoid valve is provided on the first water removal branch pipe.

3. The water purification system for removing residual water and pure water flushing according to claim 2, characterized in that, The fifth solenoid valve is a reversing solenoid valve; It further includes a temperature pipe, the water inlet end of which is communicated with the fourth pipeline, and the fifth solenoid valve is provided at the communication position. The water outlet end of the temperature pipe is communicated with a heat preservation water tank. The water outlet of the heat preservation water tank is communicated with the pipe body of the heat pipe downstream of the fourth solenoid valve through a fifth pipeline. A seventh solenoid valve is provided on the fifth pipeline; It further includes a second water removal branch pipe, one end of which is communicated with the pipe body of the heat pipe downstream of the fourth solenoid valve and the other end of which is communicated with the water removal pipeline. An eighth solenoid valve is provided on the second water removal branch pipe.

4. The water purification system for removing residual water and pure water flushing according to claim 2, wherein, It further includes a cold pipe, the water inlet end of which is communicated with the second pipeline. The water outlet end of the cold pipe is communicated with a refrigeration water tank. The water outlet of the refrigeration water tank is communicated with a second water pump through a sixth pipeline. The outlet end of the second water pump is communicated with the pipe body of the second pipeline downstream of the second solenoid valve through a seventh pipeline. A ninth solenoid valve and a tenth solenoid valve are correspondingly provided on the cold pipe and the seventh pipeline. A valve is provided at the water outlet end of the refrigeration water tank; It further includes a third water removal branch pipe, one end of which is communicated with the sixth pipeline and the other end of which is communicated with the water removal pipeline. A first solenoid valve is provided on the third water removal branch pipe.

5. The water purification system for removing residual water and pure water flushing according to claim 1, characterized in that, A pressure reducing valve is further provided on the water inlet pipe downstream of the first solenoid valve.

6. The water purification system for removing residual water and pure water flushing according to claim 3, characterized in that, A negative pressure valve is further provided on the heat pipe downstream of the fifth pipeline.

7. The water purification system for removing residual water and pure water flushing according to claim 1, characterized in that, A waste water pipe is communicated with the waste water outlet, and a second solenoid valve is provided on the waste water pipe.

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