Water purification device and water purification system

Abstract

The utility model discloses a water purifying device and a water purifying system, and belongs to the technical field of water purifying devices.The water purifying device comprises a first reverse osmosis filtering assembly, a second reverse osmosis filtering assembly, a water inlet main path, a reversing module, a waste water outlet branch, a pure water outlet branch and an old water discharging branch, the water purifying device has a water purifying mode and an old water removing mode, and under the water purifying mode, the water purifying device can be used for purifying water. The first reverse osmosis filter assembly filters tap water and provides pure water for users, and in the stale water removing mode, pure water of the second reverse osmosis filter assembly is introduced into the first wastewater end of the first reverse osmosis filter assembly, so that the length of a pure water flowing water path can be shortened, and the interior of the first reverse osmosis filter assembly is subjected to reverse flushing; according to the invention, impurities in the first reverse osmosis filter assembly can be washed away, and meanwhile, pure water can replace aged water in the first reverse osmosis filter assembly, so that zero aged water is realized, and the water use experience can be improved.

Description

Technical Field

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

[0002] At present, general water purifiers usually adopt reverse osmosis filtration components to filter impurities in tap water. However, such water purifiers generally have the phenomenon of stale water. It should be noted that there is a reverse osmosis membrane in the reverse osmosis filtration component, and the reverse osmosis membrane has a concentrated water side and a pure water side. The stale water phenomenon refers to: when the user stops taking water for a period of time, due to the accumulation of impurities on the concentrated water side of the reverse osmosis membrane, a concentration difference exists between the concentrated water side and the pure water side of the reverse osmosis membrane, resulting in an osmosis effect. The water molecules on the pure water side will slowly penetrate through the reverse osmosis membrane to the concentrated water side, resulting in a higher impurity content in the first cup of pure water taken by the user later, and the drinking experience is poor. This water with a higher impurity content is also called stale water.

[0003] In the related art, by arranging two reverse osmosis filtration components, one reverse osmosis filtration component is mainly used to filter tap water, and the other reverse osmosis filtration component is used to provide pure water for flushing stale water for the aforementioned reverse osmosis filtration component. Specifically, pure water is introduced into the water inlet end of this reverse osmosis filtration component, and the concentrated water remaining on the concentrated water side of the reverse osmosis membrane is replaced with pure water with a lower impurity concentration. However, this method has some defects. The pure water enters its interior from the water inlet end of the reverse osmosis filtration component, resulting in a longer water flow path for the pure water. It takes a period of time for the pure water to enter the interior of the reverse osmosis membrane, resulting in a shorter interaction time between the pure water and the reverse osmosis membrane. The pure water directly flushes the surface of the reverse osmosis membrane, and it is difficult to wash away the impurities, and the flushing effect is not very ideal. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a water purification device. The pure water enters the interior of the reverse osmosis filtration component from the wastewater end, allowing the pure water to directly contact the reverse osmosis membrane, which can shorten the water flow path of the pure water. The pure water flushes the reverse osmosis membrane from the inside out, which is beneficial to flushing the impurities on the surface of the reverse osmosis membrane by the pure water and improving the flushing effect.

[0005] The utility model also provides a water purification system including the above water purification device.

[0006] The water purification device according to the first aspect embodiment of the present utility model includes: a first reverse osmosis filtration assembly having a first water inlet end, a first pure water end, and a first wastewater end; a second reverse osmosis filtration assembly having a second water inlet end, a second pure water end, and a second wastewater end; a main water inlet path; a commutation module connected to the main water inlet path, the first water inlet end, and the second water inlet end, the commutation module being configured to conduct the main water inlet path and the first water inlet end or conduct the main water inlet path and the second water inlet end; a pure water outlet branch connected to the first pure water end; a wastewater outlet branch connected to the first wastewater end; a stale water discharge branch, one end of which is connected to the first water inlet end and the other end of which is connected to the wastewater outlet branch; a first switching valve provided on the stale water discharge branch; a first connecting water path, one end of which is connected to the second pure water end and the other end of which is connected to the first wastewater end to form a first connection position; a second connecting water path, one end of which is connected to the second wastewater end to form a second connection position and the other end of which is connected to the wastewater outlet branch; a second switching valve provided on the wastewater outlet branch and located between the first connection position and the second connection position; wherein, the water purification device has a water purification mode and a stale water removal mode. In the water purification mode, the commutation module conducts the main water inlet path and the first water inlet end, the first switching valve is closed, and the second switching valve is opened. In the stale water removal mode, the commutation module conducts the main water inlet path and the second water inlet end, the first switching valve is opened, and the second switching valve is closed.

[0007] The water purification device according to the first aspect embodiment of the present utility model has at least the following beneficial effects:

[0008] The water purification device of this embodiment has a water purification mode and a stale water removal mode. In the water purification mode, the commutation module conducts the main water inlet path and the first water inlet end, and tap water enters the first water inlet end through the main water inlet path. The first switching valve is closed to ensure blocking the stale water discharge branch and preventing tap water from directly flowing into the stale water discharge branch. After being filtered by the first reverse osmosis filtration assembly, the tap water becomes pure water, and the pure water flows out from the first pure water end to the pure water outlet branch, thereby providing pure water to the user. The wastewater formed by the first reverse osmosis filtration assembly flows from the first wastewater end to the wastewater outlet branch. At this time, the second switching valve is opened to ensure conducting the wastewater outlet branch and allowing the wastewater to be discharged normally.

[0009] After the user stops taking water for a period of time, due to osmosis, stale water will be generated in the first reverse osmosis filtration module. At this time, the water purification device can enter the stale water removal mode. In the stale water removal mode, the commutation module conducts the main water inlet path and the second water inlet end. Tap water enters the second water inlet end through the main water inlet path. After being filtered by the second reverse osmosis filtration module, the tap water becomes pure water. At this time, the second switching valve is closed, so that the pure water flowing out from the second pure water end can only enter the first waste water end. After the pure water enters the first waste water end, it directly contacts the reverse osmosis membrane inside the first reverse osmosis filtration module, which can shorten the flow path of the pure water, make the action time of the pure water and the reverse osmosis membrane longer, improve the flushing effect, and can realize reverse flushing. The pure water flushes the reverse osmosis membrane from the inside to the outside, which is beneficial to flushing away the impurities on the surface of the reverse osmosis membrane. Moreover, since the pure water has fewer impurities, after the pure water displaces the stale water, the concentration difference on both sides of the reverse osmosis membrane can be ensured to be small, the osmosis effect is weakened, and the stale water phenomenon is alleviated. In addition, the stale water of the first reverse osmosis filtration module flows out from the first water inlet end to the stale water discharge branch. At this time, the first switching valve is opened to conduct the stale water discharge branch to ensure the normal discharge of stale water. The waste water of the second reverse osmosis filtration module flows from the second waste water end to the waste water outlet branch.

[0010] According to some embodiments of the present invention, the commutation module includes a commutation valve, a first branch and a second branch. One end of the main water inlet path, one end of the first branch and one end of the second branch are connected to the commutation valve. The other end of the first branch is connected to the first water inlet end, and the other end of the second branch is connected to the second water inlet end.

[0011] According to some embodiments of the present invention, the commutation module includes a third switching valve, a fourth switching valve, a first branch and a second branch. One end of the first branch is connected to the main water inlet path, the other end of the first branch is connected to the first water inlet end, one end of the second branch is connected to the main water inlet path, the other end of the second branch is connected to the second water inlet end, the third switching valve is arranged on the first branch, and the fourth switching valve is arranged on the second branch.

[0012] According to some embodiments of the present invention, the water purification device includes a first one-way valve, and the first one-way valve is arranged on the first connection water path.

[0013] According to some embodiments of the present invention, the water purification device includes a second one-way valve, and the second one-way valve is arranged on the second connection water path.

[0014] According to some embodiments of the present invention, the water purification device includes a pre-filtering module, and the pre-filtering module is arranged on the main water inlet path.

[0015] According to some embodiments of the present invention, the pre-filtering module includes a PPC filter element.

[0016] According to some embodiments of the present utility model, the water purification device includes a post-filter assembly, the post-filter assembly is arranged on the pure water outlet branch, and the post-filter assembly includes an activated carbon filter element.

[0017] According to some embodiments of the present utility model, the water purification device includes a booster pump, and the booster pump is arranged on the main water inlet path.

[0018] The water purification system according to the embodiments of the second aspect of the present utility model includes the water purification device according to the embodiments of the first aspect.

[0019] Since the water purification system according to the embodiments of the second aspect of the present utility model includes the water purification device according to the embodiments of the first aspect, it has at least the above-mentioned beneficial effects, which will not be elaborated herein.

[0020] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0021] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0022] Figure 1 is the schematic diagram of the water purification device according to some embodiments of the present utility model;

[0023] Figure 2 is the schematic diagram of the water purification device according to some embodiments of the present utility model;

[0024] Figure 3 is the schematic diagram of the water purification device according to some embodiments of the present utility model;

[0025] Figure 4 is the cross-sectional view of the first reverse osmosis filter assembly of the water purification device according to some embodiments of the present utility model;

[0026] Figure 5 is the cross-sectional view of the first reverse osmosis filter assembly of the water purification device according to some embodiments of the present utility model.

[0027] Reference Signs:

[0028] Water purification device 1000;

[0029] First reverse osmosis filter assembly 100, inlet water flow 101, pure water flow 102, waste water flow 103, housing 104, reverse osmosis membrane 105, gap 106;

[0030] Second reverse osmosis filter assembly 200;

[0031] The main water inlet path 300, the pure water outlet branch 301, the wastewater outlet branch 302, the stale water discharge branch 303, the first connecting water path 304, the second connecting water path 305;

[0032] The commutation module 400, the commutation valve 401, the first branch 402, the second branch 403, the third switching valve 404, the fourth switching valve 405;

[0033] The first switching valve 500, the second switching valve 501, the fifth switching valve 502, the first one-way valve 503, the second one-way valve 504, the booster pump 505;

[0034] The pre-filter assembly 600, the post-filter assembly 601;

[0035] The faucet 700. Detailed implementation mode

[0036] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0037] Refer to Figure 1 And Figure 2 As shown, the water purification device 1000 of the embodiment of the present utility model includes a first reverse osmosis filtration assembly 100, a second reverse osmosis filtration assembly 200, a main water inlet path 300, a pure water outlet branch 301, a wastewater outlet branch 302, a stale water discharge branch 303, a first connecting water path 304, a second connecting water path 305, a commutation module 400, a first switching valve 500 and a second switching valve 501.

[0038] Specifically, refer to Figure 1 And Figure 2 As shown, the first reverse osmosis filtration assembly 100 has a first water inlet end, a first pure water end and a first wastewater end. The second reverse osmosis filtration assembly 200 has a second water inlet end, a second pure water end and a second wastewater end. The commutation module 400 is connected to the main water inlet path 300, the first water inlet end and the second water inlet end. The commutation module 400 is used to control the conduction between the main water inlet path 300 and the first water inlet end, or control the conduction between the main water inlet path 300 and the second water inlet end, and can realize the function of water path switching, so that tap water can flow into the first reverse osmosis filtration assembly 100 or flow into the second reverse osmosis filtration assembly 200. The first reverse osmosis filtration assembly 100 is mainly used to filter tap water into pure water and supply the pure water to users. The second reverse osmosis filtration assembly 200 is mainly used to filter tap water into pure water and supply the pure water to the first reverse osmosis filtration assembly 100 to wash the inside of the first reverse osmosis filtration assembly 100.

[0039] Refer to Figure 1 and Figure 2 As shown, one end of the pure water outlet branch 301 is connected to the first pure water end, and the other end of the pure water outlet branch 301 is connected to the faucet 700. The pure water formed by filtering the tap water through the first reverse osmosis filtration component 100 directly flows into the pure water outlet branch 301 and flows out from the faucet 700, realizing the supply of pure water to the user. One end of the waste water outlet branch 302 is connected to the first waste water end, and the waste water formed by the first reverse osmosis filtration component 100 is directly discharged into the waste water outlet branch 302. One end of the stale water discharge branch 303 is connected to the first water inlet end, and the other end of the stale water discharge branch 303 is connected to the waste water outlet branch 302. The stale water discharge branch 303 is used to discharge the stale water of the first reverse osmosis filtration component 100. The first switch valve 500 is arranged in the stale water discharge branch 303 to conduct or block the stale water discharge branch 303. One end of the first connecting water path 304 is connected to the second pure water end, and the other end of the first connecting water path 304 is connected to the first waste water end to form a first connecting position. The first connecting water path 304 is mainly used to introduce the pure water of the second reverse osmosis filtration component 200 into the first waste water end. One end of the second connecting water path 305 is connected to the second waste water end, and the other end of the second connecting water path 305 is connected to the waste water outlet branch 302 to form a second connecting position. The second connecting water path 305 is mainly used to introduce the waste water generated by the second reverse osmosis filtration component 200 into the waste water outlet branch 302. The second switch valve 501 is arranged in the waste water outlet branch 302, and the second switch valve 501 is located between the first connecting position and the second connecting position.

[0040] It should be noted that the water purification device 1000 of this embodiment has a water purification mode and a stale water removal mode. In the water purification mode, the flow direction of the tap water can be referred to Figure 1 the arrow direction in. The commutation module 400 conducts the main water inlet path 300 and the first water inlet end of the first reverse osmosis filtration component 100. The tap water enters the first water inlet end through the main water inlet path 300. At this time, the first switch valve 500 is closed to ensure blocking the stale water discharge branch 303 and preventing the tap water from directly flowing into the stale water discharge branch 303. Then, after being filtered by the first reverse osmosis filtration component 100, the tap water becomes pure water. The pure water flows out from the first pure water end of the first reverse osmosis filtration component 100 to the pure water outlet branch 301, thereby providing pure water to the user. The waste water formed by the first reverse osmosis filtration component 100 flows from the first waste water end to the waste water outlet branch 302. At this time, the second switch valve 501 is opened to ensure conducting the waste water outlet branch 302 and allowing the waste water to be discharged normally. It should be noted that in the water purification mode, the tap water does not pass through the second reverse osmosis filtration component 200, and the second reverse osmosis filtration component 200 does not play a filtering role.

[0041] After the user stops taking water for a period of time, stale water will be generated in the first reverse osmosis filtration component 100. At this time, the water purification device 1000 can enter the stale water removal mode. In the stale water removal mode, the flow direction of tap water can be referred to Figure 2 the arrow direction in. The commutation module 400 conducts the main water inlet path 300 and the second water inlet end of the second reverse osmosis filtration component 200. Tap water enters the second water inlet end through the main water inlet path 300. After being filtered by the second reverse osmosis filtration component 200, the tap water becomes pure water. At this time, the second switching valve 501 is closed, so that the pure water flowing out from the second pure water end of the second reverse osmosis filtration component 200 can only enter the first waste water end of the first reverse osmosis filtration component 100. After the pure water enters the first waste water end, it directly contacts the reverse osmosis membrane inside the first reverse osmosis filtration component 100. The pure water can directly enter the inside of the reverse osmosis membrane, which can shorten the flow water path length of the pure water, make the action time of the pure water and the reverse osmosis membrane longer, and improve the flushing effect. The stale water in the first reverse osmosis filtration component 100 flows into the stale water discharge branch 303 from the first water inlet end. At this time, the first switching valve 500 is opened to conduct the stale water discharge branch 303 to ensure the smooth discharge of the stale water. The waste water of the second reverse osmosis filtration component 200 flows to the waste water outlet branch 302 from the second waste water end. After the second switching valve 501 is closed, it can prevent the waste water at the second waste water end from flowing back into the first waste water end and mixing with the pure water, ensuring that the pure water has less impurities. In the stale water removal mode, mainly let pure water enter the first waste water end to perform reverse flushing on the reverse osmosis membrane inside the first reverse osmosis filtration component 100. Flushing the reverse osmosis membrane from the inside to the outside can effectively wash away the impurities on the surface of the reverse osmosis membrane. And because the pure water has less impurities, after replacing the stale water, the concentration difference on both sides of the reverse osmosis membrane can be made smaller, weakening the osmosis effect, slowing down the stale water phenomenon, and truly achieving zero stale water. When the user stops taking water, the water purification device 1000 can automatically enter the stale water removal mode. After the first reverse osmosis filtration component 100 is flushed for a period of time, the stale water in the first reverse osmosis filtration component 100 can be removed, ensuring that the first cup of pure water taken by the user has less impurities and improving the water use experience.

[0042] In some embodiments, the structures of the first reverse osmosis filtration component 100 and the second reverse osmosis filtration component 200 are the same. Taking the first reverse osmosis filtration component 100 as an example, refer to Figure 4 as shown. The first reverse osmosis filtration component 100 includes a housing 104 and a reverse osmosis membrane 105. A cavity is provided inside the housing 104, and the reverse osmosis membrane 105 is arranged in the cavity. The reverse osmosis membrane 105 is wound in the cavity, and there is a gap 106 between the outer peripheral surface of the reverse osmosis membrane 105 and the inner peripheral surface of the housing 104.

[0043] Refer to Figure 4As shown, in the water purification mode, tap water enters the interior of the first reverse osmosis filtration module 100 from the first water inlet end and becomes the inlet water flow 101. The inlet water flow 101 will flow through the gap 106. At this time, the inlet water flow 101 passes through the surface of the reverse osmosis membrane 105. Under the action of water pressure, the water molecules in the inlet water flow 101 overcome the osmotic pressure and penetrate into the multi-layer reverse osmosis membrane 105, thereby forming a pure water flow 102. The pure water flow 102 flows out from the first pure water end. The impurities in the inlet water flow 101 are blocked by the reverse osmosis membrane 105, and the waste water flow 103 with impurities flows out from the first waste water end. The position of the waste water flow 103 can be understood as the concentrated water side of the reverse osmosis membrane 105, and the position of the pure water flow 102 can be understood as the pure water side of the reverse osmosis membrane 105.

[0044] Refer to Figure 5 As shown, in the stale water removal mode, the pure water flow 102 filtered by the second reverse osmosis filtration module 200 enters the interior of the first reverse osmosis filtration module 100 from the first waste water end. The pure water flow 102 directly contacts the reverse osmosis membrane 105. The pure water flow 102 does not need to pass through the gap 106 and then enter the interior of the reverse osmosis membrane 105, which can shorten the flow path length of the pure water flow 102 and make the action time of the pure water flow 102 and the reverse osmosis membrane 105 longer. Moreover, the pure water flow 102 flushes the reverse osmosis membrane 105 from the inside to the outside, achieving the effect of reverse flushing, which is beneficial to flushing out the impurities on the surface of the reverse osmosis membrane 105. The pure water flow 102 is mixed with the stale water inside the first reverse osmosis filtration module 100 and becomes the waste water flow 103. The waste water flow 103 flows out from the first water inlet end after passing through the gap 106.

[0045] Refer to Figure 1 As shown, in some embodiments, the water purification device 1000 further includes a booster pump 505. The booster pump 505 is arranged on the main water inlet path 300. The booster pump 505 is used to provide water pressure. The direction of the water pressure is from the concentrated water side of the reverse osmosis membrane to the pure water side of the reverse osmosis membrane, which is beneficial for the water molecules in the concentrated water side to overcome the osmotic effect and pass through the reverse osmosis membrane, improving the filtration efficiency of the reverse osmosis membrane. When the water pressure of the tap water is insufficient, a booster pump 505 can be added to increase the water pressure.

[0046] Refer to Figure 1 As shown, in some embodiments, the commutation module 400 includes a commutation valve 401, a first branch 402, and a second branch 403. The commutation valve 401 can be understood as a three-way commutation valve 401. One end of the main water inlet path 300, one end of the first branch 402, and one end of the second branch 403 are connected to the commutation valve 401. The other end of the first branch 402 is connected to the first water inlet end, and the other end of the second branch 403 is connected to the second water inlet end. The commutation valve 401 can control the main water inlet path 300 to be communicated with the first branch 402, or control the main water inlet path 300 to be communicated with the second branch 403, thereby realizing the commutation function.

[0047] Referring to Figure 3 As shown, in some embodiments, the commutation module 400 includes a third switching valve 404, a fourth switching valve 405, a first branch 402, and a second branch 403. One end of the first branch 402 is connected to the main water inlet path 300, and the other end of the first branch 402 is connected to the first water inlet end. One end of the second branch 403 is connected to the main water inlet path 300, and the other end of the second branch 403 is connected to the second water inlet end. The third switching valve 404 is disposed in the first branch 402, and the fourth switching valve 405 is disposed in the second branch 403. In the purified water mode, the third switching valve 404 is opened to conduct the main water inlet path 300 and the first branch 402, and the fourth switching valve 405 is closed to disconnect the main water inlet path 300 and the second branch 403, ensuring that the tap water only flows into the first reverse osmosis filtration assembly 100. In the stale water removal mode, the fourth switching valve 405 is opened to conduct the main water inlet path 300 and the second branch 403, and the third switching valve 404 is closed to disconnect the main water inlet path 300 and the first branch 402, ensuring that the tap water only flows into the second reverse osmosis filtration assembly 200.

[0048] Referring to Figure 1 As shown, in some embodiments, the water purification device 1000 further includes a first one-way valve 503, and the first one-way valve 503 is disposed in the first connection water path 304. The first one-way valve 503 allows the pure water in the first connection water path 304 to only flow from the second pure water end to the first waste water end, which can prevent the waste water in the first waste water end or the waste water outlet branch 302 from flowing into the second pure water end and avoid polluting the second pure water end. It should also be noted that if the water flow reversely flows into the second pure water end, it will damage the reverse osmosis membrane in the second reverse osmosis filtration assembly 200, resulting in the destruction of the ion layer on the surface of the reverse osmosis membrane, a decrease in the desalination rate, and a decrease in the service life of the reverse osmosis membrane. By setting the first one-way valve 503 in this embodiment, the water flow can be prevented from flowing towards the second pure water end, which plays a protective role in the reverse osmosis membrane in the second reverse osmosis filtration assembly 200 and can improve the service life of the second reverse osmosis filtration assembly 200.

[0049] Referring to Figure 1 As shown, in some embodiments, the water purification device 1000 further includes a second one-way valve 504, and the second one-way valve 504 is disposed in the second connection water path 305. The second one-way valve 504 allows the waste water in the second connection water path 305 to only flow from the second waste water end to the waste water outlet branch 302, which can prevent the waste water in the first waste water end or the waste water outlet branch 302 from flowing back into the second waste water end.

[0050] Referring to Figure 1As shown, in some embodiments, the water purification device 1000 includes a pre-filter assembly 600. The pre-filter assembly 600 is provided in the main water inlet path 300 and is used as a pretreatment for tap water, mainly for removing large particulate impurities in the tap water. In some embodiments, the pre-filter assembly 600 includes a PPC filter element. The composition of the PPC filter element is mainly composed of PP cotton and activated carbon, which can reduce the volume. The PPC filter element has the advantages of high filtration accuracy, good chemical resistance, and long service life, and can effectively remove microorganisms such as bacteria, viruses, and parasites in the water, as well as large particulate impurities such as sediment, rust, and colloid.

[0051] Referring to Figure 1 As shown, in some embodiments, the water purification device 1000 includes a post-filter assembly 601. The post-filter assembly 601 is provided in the pure water outlet branch 301. In some embodiments, the post-filter assembly 601 includes an activated carbon filter element, which can adsorb impurities such as heavy metal ions, organic substances, and pigments in the pure water, further improve the water quality, and enhance the water use experience.

[0052] Referring to Figure 1 As shown, in some embodiments, the water purification device 1000 includes a fifth switching valve 502. The fifth switching valve 502 is disposed in the waste water outlet branch 302, and the fifth switching valve 502 is located between the water outlet end of the second connection water path 305 and the water outlet end of the waste water outlet branch 302. The fifth switching valve 502 is mainly used to control the on or off of the waste water outlet branch 302 and is used to control the waste water drainage.

[0053] It should be noted that each of the above-mentioned switching valves can be a solenoid valve, and the solenoid valve is electrically connected to the control system and can automatically control the opening or closing of the solenoid valve.

[0054] The present invention also provides a water purification system. The water purification system includes the water purification device 1000 of the above embodiment. The water purification system can perform reverse flushing on the first reverse osmosis filtration component 100, which is beneficial to flushing away impurities inside the first reverse osmosis filtration component 100, alleviating the phenomenon of stale water, and can improve the water use experience.

[0055] In the description of the present invention, it should be understood that for the orientation description, such as the upper, lower, left, right, etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 should not be construed as a limitation to the present invention.

[0056] In the description of the present utility model, if the first and the second are described only for the purpose of distinguishing technical features, they shall not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0057] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. shall be understood in a broad sense, and those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0058] Certainly, the present utility model is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A water purification device, characterized in that: include: A first reverse osmosis filtration component has a first water inlet end, a first pure water end and a first waste water end; A second reverse osmosis filtration component has a second water inlet end, a second pure water end, and a second waste water end; Main water inlet road; a reversing module, connecting the water inlet main path, the first water inlet end and the second water inlet end, the reversing module being used to conduct the water inlet main path with the first water inlet end or conduct the water inlet main path with the second water inlet end; A pure water outlet branch connected to the first pure water end; A wastewater outlet branch connected to the first wastewater end; A drainage branch, one end of which is connected to the first water inlet, and the other end of which is connected to the wastewater outlet branch; A first switch valve is provided on the drainage water branch; a first connecting water channel, one end of which is connected to the second pure water end, and the other end of which is connected to the first waste water end to form a first connecting position; A second connecting waterway, one end of which is connected to the second wastewater end, and the other end of which is connected to the wastewater outlet branch to form a second connecting position; A second switch valve is provided in the wastewater outlet branch and is located between the first connection position and the second connection position; Among them, the water purification device has a water purification mode and a stale water removal mode. In the water purification mode, the reversing module connects the main water inlet path and the first water inlet end, the first switch valve is closed, and the second switch valve is opened. In the stale water removal mode, the reversing module connects the main water inlet path and the second water inlet end, the first switch valve is opened, and the second switch valve is closed.

2. The water purification device according to claim 1, characterized in that: The reversing module includes a reversing valve, a first branch and a second branch. One end of the main water inlet, one end of the first branch and one end of the second branch are connected to the reversing valve, the other end of the first branch is connected to the first water inlet end, and the other end of the second branch is connected to the second water inlet end.

3. The water purification device according to claim 1, characterized in that: The reversing module includes a third switch valve, a fourth switch valve, a first branch and a second branch, one end of the first branch is connected to the main water inlet, the other end of the first branch is connected to the first water inlet end, one end of the second branch is connected to the main water inlet, the other end of the second branch is connected to the second water inlet end, the third switch valve is arranged on the first branch, and the fourth switch valve is arranged on the second branch.

4. The water purification device according to claim 1, characterized in that: The water purification device comprises a first one-way valve, and the first one-way valve is arranged in the first connecting water channel.

5. The water purification device according to claim 1, characterized in that: The water purification device comprises a second one-way valve, and the second one-way valve is arranged in the second connecting water channel.

6. The water purification device according to claim 1, characterized in that: The water purification device comprises a pre-filter assembly, and the pre-filter assembly is arranged in the main water inlet path.

7. The water purification device according to claim 6, characterized in that: The pre-filter assembly includes a PPC filter element.

8. The water purification device according to claim 1, characterized in that: The water purification device comprises a post-filter component, which is arranged in the pure water outlet branch and comprises an activated carbon filter element.

9. The water purification device according to claim 1, characterized in that: The water purification device comprises a booster pump, and the booster pump is arranged in the main water inlet path.

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

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