Water purification equipment

Abstract

The utility model relates to the technical field of water treatment, and discloses water purification equipment which comprises a filter element, a waterway plate, a water outlet mechanism and a pressure tank, the waterway plate is communicated with the filter element; the water outlet mechanism is communicated with the waterway plate; the pressure tank is communicated with the waterway plate; wherein the pure water filtered by the filter element can be guided into the pressure tank through the waterway plate, and the pure water in the pressure tank can be guided into the filter element through the waterway plate. After the water purification equipment stops working, the pressure tank can guide pure water stored in the water cavity of the pressure tank into the filter element through the waterway plate, so that the filter element can be flushed and cleaned, dirt and impurities in the filter element are removed, and the TDS value of head cup water when the water purification equipment is started subsequently can be reduced.

Description

Technical Field

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

[0002] Water purification equipment is used to filter and treat water sources to make it safe, clean and drinkable. Water purification equipment is usually composed of a waterway board, a filter element and a water outlet mechanism, and these components cooperate with each other to achieve the water purification process. Among them, the water flow is introduced into the filter element through the waterway board to be filtered and the pure water is exported to the water outlet mechanism through the waterway board, so that pure water can be obtained through the water outlet mechanism for use.

[0003] However, when the pure water in the water plate of the water purification equipment or the pure water in the water outlet mechanism has not been discharged for a long time, the dissolved substances in the pure water may dissolve into the water again, resulting in an increase in the TDS value. At this time, starting the water purification equipment will cause the TDS value of the first cup of water to be high. Utility Model Content

[0004] The embodiment of the utility model aims to provide a water purification device to solve the technical problem that the TDS value of the first cup of water of the water purification device in the prior art is relatively high.

[0005] The utility model embodiment solves its technical problems by adopting the following technical solutions:

[0006] A water purification device is provided, comprising:

[0007] Filter element;

[0008] A waterway plate, wherein the waterway plate and the filter element are in communication with each other;

[0009] A water outlet mechanism, wherein the water outlet mechanism is in communication with the waterway plate;

[0010] A pressure tank, the pressure tank is connected to the waterway plate;

[0011] The pure water filtered by the filter element can be introduced into the pressure tank through the waterway plate, and the pure water in the pressure tank can be introduced into the filter element through the waterway plate.

[0012] In some embodiments, the waterway plate includes a first pipe and a second pipe, the first pipe is interconnected with the filter element, the second pipe is interconnected with the first pipe, and the second pipe is interconnected with the pressure tank;

[0013] Wherein, the pure water filtered by the filter element can be introduced into the pressure tank through the second pipe, and the pure water in the pressure tank can be introduced into the water outlet mechanism through the second pipe.

[0014] In some embodiments, the waterway plate further includes a third pipe, one end of the third pipe is interconnected with the first pipe, and the other end of the third pipe is interconnected with the water outlet mechanism.

[0015] In some embodiments, the waterway plate further includes a return pipe, and the return pipe includes a first flow channel and a second flow channel;

[0016] The filter element comprises a reflux outlet and a reflux inlet;

[0017] One end of the first flow channel is connected to the reflux outlet of the filter element, and the other end is connected to the second flow channel through a booster pump, and the second flow channel is connected to the reflux inlet;

[0018] And the first flow channel is communicated with the first pipeline through a first valve.

[0019] In some embodiments, the water outlet mechanism includes a fourth pipe and a buffer tank, and the waterway plate further includes a water outlet pipe;

[0020] The fourth pipeline and the third pipeline are interconnected, one end of the buffer tank is interconnected with the fourth pipeline, and the other end is interconnected with the water outlet pipeline.

[0021] In some embodiments, the water outlet mechanism further includes a heating assembly, and the heating assembly includes a heating tank and a three-way valve;

[0022] The buffer tank is communicated with the heating tank and the three-way valve respectively.

[0023] In some embodiments, the buffer tank includes a heating pipe and a normal temperature pipe, and the three-way valve includes a first interface, a second interface, and a third interface;

[0024] The heating pipe is connected to the first interface of the three-way valve through the heating tank, the normal temperature pipe is connected to the second interface of the three-way valve, and the water outlet pipe is connected to the third interface of the three-way valve.

[0025] In some embodiments, the heating tank includes a heating inlet and a heating outlet, the heating inlet is connected to the heating pipe, and the heating outlet is connected to the first interface of the three-way valve.

[0026] In some embodiments, the water outlet mechanism further includes a back-suction assembly, and the back-suction assembly includes a back-suction pipe and a back-suction valve;

[0027] The back-suction pipeline is communicated with the fourth pipeline, one end of the back-suction valve is communicated with the back-suction pipeline, and the other end is communicated with the reflux pipeline.

[0028] In some embodiments, the waterway plate further comprises a water inlet pipe and a wastewater pipe, and the filter element comprises a water inlet and a wastewater outlet;

[0029] The water inlet pipe is connected to the water inlet, the wastewater pipe is connected to the wastewater outlet, and the water inlet pipe and the wastewater pipe are isolated from each other.

[0030] Compared with the prior art, in the water purification equipment provided by the embodiment of the utility model, the pressure tank is connected to the waterway plate, and the waterway plate is respectively interconnected with the filter element and the water outlet mechanism. The pure water filtered by the filter element can be introduced into the pressure tank through the waterway plate, and the pure water in the pressure tank can be guided back to the filter element through the waterway plate. The pressure tank includes a gas chamber and a water chamber, which are separated by a partition membrane. After water flows through the filter element for filtration, part of the filtered pure water can enter the water chamber of the pressure tank through the waterway plate. At the same time, a certain amount of air in the gas chamber of the pressure tank is squeezed by the pure water entering the pressure tank and separated from the partition membrane. When the water purification equipment is running, the water pressure in the water chamber of the pressure tank increases and exceeds the preset set pressure. At this time, the water chamber pressure in the pressure tank will increase, causing the air on the partition membrane to be compressed. When the water purification equipment stops running, the filter element no longer filters and provides pure water to the waterway plate. At this time, the compressed air on the separation membrane pushes the pure water previously pressed into the water cavity, so that the water cavity in the pressure tank can release the stored pure water and introduce it into the waterway plate, and then introduce it into the filter element through the waterway plate. Through this setting, the pressure tank can introduce the pure water stored in its water cavity into the filter element through the waterway plate, so that the filter element can be rinsed and cleaned, and the dirt and impurities in the filter element can be removed, thereby reducing the TDS value of the first cup of water when the water purification equipment is turned on later. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0032] Figure 1 It is a structural schematic diagram of a water purification device provided by one embodiment of the utility model;

[0033] Figure 2 It is a schematic diagram of the assembly of a pressure tank and a waterway plate provided in one embodiment of the utility model;

[0034] Figure 3 This is a schematic structural diagram from another angle of a water purification device provided by one embodiment of the utility model;

[0035] Figure 4 It is a structural schematic diagram of a waterway plate provided in one embodiment of the utility model;

[0036] Figure 5 It is a structural schematic diagram of a filter element provided in one embodiment of the utility model.

[0037] Reference numerals:

[0038] 100. Water purification equipment; 10. Filter element; 11. Reflux inlet; 12. Reflux outlet; 13. Water inlet; 14. Wastewater outlet; 15. Pure water outlet; 20. Waterway plate; 21. First pipeline; 22. Second pipeline; 23. Third pipeline; 24. Reflux pipeline; 241. First flow channel; 242. Second flow channel; 243. First valve; 25. Water outlet pipeline; 36. Water inlet pipeline; 37. Wastewater pipeline; 30. Water outlet mechanism; 31. Fourth pipeline; 32. Buffer tank; 321. Heating pipeline; 322. Normal temperature pipeline; 33. Heating component; 331. Heating tank; 3311. Heating inlet; 3312. Heating outlet; 332. Three-way valve; 34. Back-suction component; 341. Back-suction pipeline; 342. Back-suction valve; 40. Pressure tank; 50. Booster pump. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connecting" another element, it can be directly on another element, or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the 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 understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0041] In the embodiment of the utility model, the water purification device can purify the water flow to obtain pure water for use.

[0042] Combine the following Figures 1 to 5 , the water purification equipment provided in the embodiment of the present application is described in detail through specific examples.

[0043] Please also read Figure 1 and Figure 2 The water purification device 100 provided in one embodiment of the utility model comprises a filter element 10, a waterway plate 20, a water outlet mechanism 30 and a pressure tank 40. The waterway plate 20 is interconnected with the filter element 10; the water outlet mechanism 30 is interconnected with the waterway plate 20; the pressure tank 40 is interconnected with the waterway plate 20; wherein, the pure water filtered by the filter element 10 can be introduced into the pressure tank 40 through the waterway plate 20, and the pure water in the pressure tank 40 can be introduced into the filter element 10 through the waterway plate 20.

[0044] Regarding the waterway plate 20 mentioned above, the waterway plate 20 is used to introduce the waterway into the filter element 10, and to introduce the pure water in the filter element 10 into the waterway plate 20. The waterway plate 20 is used for the circulation of water in the water purification device 100.

[0045] The waterway plate 20 can guide the pure water in the filter element 10 into the water outlet mechanism 30, and the pure water is discharged and used through the water outlet mechanism 30. The pressure tank 40 can be connected to the water outlet mechanism 30 through the waterway plate 20, and the waterway plate 20 can guide the pure water filtered in the filter element 10 into the pressure tank 40 and store it; and the pressure tank 40 can guide the pure water stored therein into the filter element 30 through the waterway plate 20.

[0046] In this embodiment, the pressure tank 40 is connected to the waterway plate 20, and the waterway plate 20 is respectively connected to the filter element 10 and the water outlet mechanism 30. The pure water filtered by the filter element 10 can be introduced into the pressure tank 40 through the waterway plate 20, and the pure water in the pressure tank 40 can be guided back to the filter element 10 through the waterway plate 20. The pressure tank 40 includes a gas chamber and a water chamber, which are separated by a partition membrane. After water flows through the filter element 10 for filtration, part of the filtered pure water can enter the water chamber of the pressure tank 40 through the waterway plate 20. At the same time, a certain amount of air in the gas chamber of the pressure tank 40 is squeezed by the pure water entering the pressure tank 40 and separated from the partition membrane. When the water purification equipment 100 is running, the water pressure in the water chamber of the pressure tank 40 increases and exceeds the preset set pressure. At this time, the water chamber pressure in the pressure tank 40 will increase, so that the air on the partition membrane is compressed. When the water purification device 100 stops running, the filter element 10 no longer filters and provides pure water to the waterway plate 20. At this time, the compressed air on the separation membrane pushes the pure water previously pressed into the water cavity, so that the water cavity in the pressure tank 40 can release the stored pure water and introduce it into the waterway plate 20, and then introduce it into the filter element through the waterway plate 20. Through such a setting, the pressure tank 40 can introduce the pure water stored in its water cavity into the filter element 10 through the waterway plate 20, so that the filter element 10 can be rinsed and cleaned, and the dirt and impurities in the filter element 10 can be removed, so as to reduce the TDS value of the first cup of water when the water purification device 100 is opened later.

[0047] In addition, the pure water in the pressure tank 40 can also be introduced into the water outlet mechanism 30 through the water channel plate 20, mixed with the water with a higher TDS value in the water outlet mechanism 30, and then heated or directly exported for use, thereby reducing the TDS value of the first cup of water when the water purification equipment 100 is subsequently opened.

[0048] Please also read Figure 3 and Figure 4 In some embodiments, the waterway plate 20 includes a first pipe 21 and a second pipe 22, the first pipe 21 is interconnected with the filter element 10, the second pipe 22 is interconnected with the first pipe 21, and the second pipe 22 is interconnected with the pressure tank 40; wherein, the pure water filtered by the filter element 10 can be introduced into the pressure tank 40 through the second pipe 22, and the pure water in the pressure tank 40 can be introduced into the water outlet mechanism 30 through the second pipe 22.

[0049] Among them, the first pipe 21 of the waterway plate 20 and the filter element 10 are interconnected, and the second pipe 22 and the first pipe 21 are interconnected. The pure water filtered by the filter element 10 can enter the second pipe 22 through the first pipe 21. The second pipe 22 and the pressure tank 40 are interconnected, and the water in the second pipe 22 that can enter the water cavity of the pressure tank 40 is stored. In addition, when the water purification device 100 stops working, the filter element 10 no longer provides pure water to the first pipe 21. At this time, the compressed air on the partition membrane of the pressure tank 40 pushes the pure water previously pressed into the water cavity, so that the water cavity in the pressure tank 40 can release the stored pure water and introduce it into the second pipe 22, and then introduce it into the first pipe 21 through the second pipe 22. Through such a setting, the pure water with a higher TDS value in the waterway plate 20 can be mixed with the pure water in the pressure tank 40, thereby reducing the TDS value of the pure water in the waterway plate 20, and then reducing the TDS value of the first cup of water after the water purification device 100 is started again.

[0050] In some embodiments, the waterway plate 20 further includes a third pipe 23 , one end of the third pipe 23 is interconnected with the first pipe 21 , and the other end of the third pipe 23 is interconnected with the water outlet mechanism 30 .

[0051] One end of the third pipe 23 is interconnected with the first pipe 21. When the water purification device 100 is working, the pure water filtered by the filter element 10 can enter the third pipe 23 through the first pipe 21, and the pure water is introduced into the water outlet mechanism 30 through the third pipe 23 and then discharged. When the water purification device 100 stops working, the compressed air on the partition membrane of the pressure tank 40 can push the pure water in the water cavity, so that the water cavity in the pressure tank 40 can release the stored pure water and introduce it into the second pipe 22, and introduce it into the first pipe 21 through the second pipe 22, and then the pure water in the first pipe 21 can enter the third pipe 23 and enter the water outlet mechanism 30 through the third pipe 23. Through such a setting, the third pipe 23 can introduce the pure water in the pressure tank 40 into the water outlet mechanism 30 and mix it with the pure water with a higher TDS value in the water outlet mechanism 30, thereby reducing the TDS value in the water outlet mechanism 30, and further reducing the TDS value of the first cup of water of the water purification device 100.

[0052] In some embodiments, the waterway plate 20 also includes a return pipe 24, the return pipe 24 includes a first flow channel 241 and a second flow channel 242; the filter element 10 includes a return outlet 12 and a return inlet 11; one end of the first flow channel 241 is interconnected with the return outlet 12 of the filter element 10, and the other end is interconnected with the second flow channel 242 through the boosting pump 50, and the second flow channel 242 is connected to the return inlet 11; and the first flow channel 241 is interconnected with the first pipe 21 through the first valve 243.

[0053] Among them, the return pipe 24 is interconnected with the filter element 10, and the return pipe 24 is also interconnected with the first pipe 21, and the pure water in the first pipe 21 can be introduced into the return pipe 24 for mixing and then introduced into the filter element 10 again for filtering. In this embodiment, the return pipe 24 includes a first flow channel 241 and a second flow channel 242, the first flow channel 241 is interconnected with the first pipe 21, and a first valve 243 is provided between the first pipe 21 and the first flow channel 241, and the first valve 243 can control the water flow in the first pipe 21 to enter the first flow channel 241. After opening the first valve 243, the pure water in the first pipe 21 can enter the first flow channel 241; when closing the first valve 243, the pure water in the first pipe 21 cannot enter the first flow channel 241. With such an arrangement, when the water pressure in the first pipe 21 is too high, the first valve 243 can be opened to guide part of the pure water in the first pipe 21 into the first flow channel 241 to reduce the water pressure in the first pipe 21 and avoid the pipe rupture due to excessive water pressure in the first pipe 21.

[0054] Furthermore, the first flow channel 241 is also interconnected with the reflux outlet 12 of the filter element 10 , and the water in the filter element 10 that has not been completely filtered or needs to be filtered again can enter the first flow channel 241 through the reflux outlet 12 .

[0055] The reflux pipe 24 also includes a second flow channel 242, which is interconnected with the reflux inlet 11 of the filter element 10, and the second flow channel 242 is interconnected with the first flow channel 241. When the water flow coming out of the reflux outlet 12 and the pure water coming out of the first pipe 21 are mixed in the first flow channel 241, they can enter the second flow channel 242 through the first flow channel 241, and enter the filter element 10 again through the reflux inlet 11 for filtration. Through such a setting, on the one hand, the water pressure in the first pipe 21 can be reduced to prevent the first pipe 21 from rupturing; on the other hand, the water purification effect of the water purification device 100 can be improved.

[0056] Among them, the first flow channel 241 and the second flow channel 242 are interconnected by a booster pump 50. The booster pump 50 can increase the flow rate of the water flow in the first flow channel 241 and introduce the high-speed water flow into the second flow channel 242, so that the reflux water flow can enter the filter element 10 at a higher flow rate and be filtered.

[0057] It should be noted that the first valve 243 is a reflux valve, which is used to guide the water flow in the first pipe 21 into the first flow channel 241. In addition, a one-way valve is directly arranged between the reflux valve and the first flow channel 241. The one-way valve allows the fluid to flow freely in one direction, while preventing the flow of the fluid in the opposite direction. Among them, the one-way valve includes a valve body, a valve cover and a valve disc. The valve body is the main part of the one-way valve, which is usually tubular or disc-shaped. One end of the valve body is connected to the first pipe 21, and the other end is connected to the first flow channel 241. The valve cover is a part fixed to the valve body, which plays a sealing role to ensure the normal operation of the one-way valve. The valve disc is movably arranged in the valve body, and the opening and closing of the one-way valve can be controlled by the pressure difference or the action of the spring. Among them, the function of the one-way valve is to control the water flow from the first pipe 21 to the first flow channel 241 to prevent the backflow of the water flow. When the water flow applies sufficient pressure in the flow direction of the one-way valve, the valve disc will automatically open to allow the water flow to pass. When the water flow exerts pressure in the opposite direction, the valve disc will be closed, thus preventing the reverse flow of water.

[0058] In some embodiments, the water outlet mechanism 30 includes a fourth pipe 31 and a buffer box 32, and the waterway plate 20 also includes a water outlet pipe 25; the fourth pipe 31 and the third pipe 23 are interconnected, one end of the buffer box 32 is interconnected with the fourth pipe 31, and the other end is interconnected with the water outlet pipe 25.

[0059] The fourth pipe 31 is interconnected with the third pipe 23, and pure water can flow into the fourth pipe 31 through the third pipe 23. In addition, the third pipe 23 is interconnected with the buffer box 32, and the water in the third pipe 23 can be introduced into the buffer box 32. The buffer box 32 can buffer and store pure water. Pure water can first enter the buffer box 32, and then enter the water outlet pipe 25 through the buffer box 32, so as to be discharged. Through such a setting, it is possible to prevent the water flow rate from being too high and wasting water resources.

[0060] In some embodiments, the water outlet mechanism 30 further includes a heating assembly 33 , and the heating assembly 33 includes a heating tank 331 and a three-way valve 332 ; the buffer tank 32 is respectively connected to the heating tank 331 and the three-way valve 332 .

[0061] The buffer tank 32 is connected to the water outlet pipe 25 through the heating component 33. When heated pure water is needed, the buffer tank 32 can first introduce the pure water into the heating component 33, heat the water flow, and then introduce the water outlet pipe 25 through the heating component 33 and then be discharged, so that the heated pure water can be obtained.

[0062] The buffer tank 32 can prevent the hot water in the heating tank 40 from being sucked back into the filter element.

[0063] In this embodiment, the heating assembly 33 includes a three-way valve 332 and a heating tank 331. The heating pipe can be used to heat pure water, and the three-way valve 332 is used to connect the heating tank 331 and the buffer tank 32. When it is not necessary to obtain heated pure water, the pure water in the buffer tank 32 directly enters the water outlet pipe 25 through the three-way valve 332; when it is necessary to obtain heated pure water, the pure water in the buffer tank 32 first enters the heating tank 331 to be heated, and then the heating tank 331 introduces the heated pure water into the water outlet pipe 25 through the three-way valve 332; when it is necessary to obtain mixed warm water, part of the pure water in the buffer tank 32 is directly introduced into the three-way valve 332, and the other part is introduced into the heating tank 331, and the high-temperature pure water in the heating tank 331 and the low-temperature pure water in the buffer tank 32 are mixed in the three-way valve 332 to form warm water, and the warm water is discharged through the water outlet pipe 25 to obtain warm water for use.

[0064] In some embodiments, the buffer tank 32 includes a heating pipe 321 and a normal temperature pipe 322, and the three-way valve 332 includes a first interface, a second interface and a third interface; the heating pipe 321 is connected to the first interface of the three-way valve 332 through the heating tank 331, the normal temperature pipe 322 is connected to the second interface of the three-way valve 332, and the water outlet pipe 25 is connected to the third interface of the three-way valve 332.

[0065] The first interface of the three-way valve 332 is connected to the heating tank 331 to obtain high-temperature pure water, the second interface is connected to the buffer tank 32 to obtain low-temperature pure water, and the third interface is connected to the water outlet pipe 25 to guide the water flow out. The buffer tank 32 includes a heating pipe 321 and a normal temperature pipe 322, the heating pipe 321 is connected to the heating tank 331, and the normal temperature pipe 322 is connected to the second interface of the three-way valve 332. The temperature of the pure water entering the water outlet pipe 25 can be controlled by controlling the opening of the heating pipe 321 and the normal temperature pipe 322. Specifically, when low-temperature pure water is needed, the pure water in the buffer tank 32 enters the second interface of the three-way valve 332 through the normal temperature pipe 322, and enters the water outlet pipe 25 through the second interface; when high-temperature pure water is needed, the pure water in the buffer tank 32 first enters the heating tank 331 through the heating pipe 321 to be heated, and then the normal temperature water in the buffer tank 32 continues to enter the heating tank 331 through the heating pipe 321, thereby pushing out the hot water in the heating tank 331. At this time, the hot water discharged from the heating tank 331 is introduced into the water outlet pipe 25 through the first interface of the three-way valve 332, and enters the heating tank 33 1 continues to be heated for subsequent hot water use; when mixed warm water is needed, part of the pure water in the buffer tank 32 is directly introduced into the second interface of the three-way valve 332 through the normal temperature pipe 322, and the other part is introduced into the heating tank 331 through the heating pipe 321, and then the pure water heated in the heating pipe is introduced into the first interface of the three-way valve 332, and the high-temperature pure water in the heating tank 331 and the low-temperature pure water in the buffer tank 32 are mixed in the three-way valve 332 to form warm water, and the warm water is introduced into the water outlet pipe 25 through the third interface of the three-way valve 332, and is discharged from the water outlet pipe 25 to obtain warm water for use.

[0066] It should be noted that there is no limitation on the positions of the first interface, the second interface and the third interface on the three-way valve 332 , so that the three-way valve 332 can be connected to the heating tank 331 , the buffer tank 32 and the water outlet pipe 25 .

[0067] In some embodiments, the heating tank 331 includes a heating inlet 3311 and a heating outlet 3312, the heating inlet 3311 is connected to the heating pipe 321, and the heating outlet 3312 is connected to the first interface of the three-way valve 332. The heating inlet 3311 is connected to the heating pipe 321 of the buffer tank 32 to enable the pure water in the buffer tank 32 to be introduced into the heating tank 331 for heating, and the heating outlet 3312 is connected to the first interface of the three-way valve 332 to enable the heated pure water to be introduced into the water outlet pipe 25 through the three-way valve 332.

[0068] In some embodiments, the water outlet mechanism 30 also includes a back-suction assembly 34, which includes a back-suction pipe 341 and a back-suction valve 342; the back-suction pipe 341 is interconnected with the fourth pipe 31, one end of the back-suction valve 342 is interconnected with the back-suction pipe 341, and the other end is interconnected with the return pipe 24.

[0069] One end of the back-suction pipe 341 is connected to the fourth pipe 31, and the other end is connected to the reflux pipe 24. After the water purification device 100 is turned off, the residual pure water in the fourth pipe 31 can be back-sucked through the back-suction pipe 341, and then the residual pure water in the water outlet pipe 25 can be back-sucked into the fourth pipe 31, and then back-sucked into the back-suction pipe 341 through the fourth pipe 31. Then, the back-suction pipe 341 can introduce the back-sucked pure water into the reflux pipe 24 through the back-suction valve 342. Then, the pure water in the reflux pipe 24 enters the pump and enters the waste water pipe 37 through the pump to be discharged. Through such a setting, the pure water remaining in the water outlet pipe 24 can be back-sucked, which can prevent the hot water heated by the heating component 33 from mixing with the pure water remaining in the water outlet pipe 24 and then being discharged, resulting in the situation where the temperature of the first cup of water is not high.

[0070] Specifically, the fourth pipe 31 and the back-suction pipe 341 are connected via the back-suction valve 342 , and the residual pure water flowing into the fourth pipe 31 is sucked back into the back-suction pipe 341 via the back-suction valve 342 , and introduced into the reflux pipe 24 via the back-suction pipe 341 .

[0071] See also Figure 5 In some embodiments, the waterway plate 20 further includes an inlet pipe 36 and a wastewater pipe 37, and the filter element 10 includes an inlet port 13 and a wastewater port 14; the inlet pipe 36 is connected to the inlet port 13, the wastewater pipe 37 is connected to the wastewater port 14, and the inlet pipe 36 and the wastewater pipe 37 are isolated from each other.

[0072] The water inlet 13 of the filter element 10 is connected to the water inlet pipe 36 so that the water flow is introduced into the filter element 10 through the water inlet pipe 36 for filtration to obtain pure water. The wastewater outlet 14 of the filter element 10 and the wastewater pipe 37 are interconnected so that the wastewater filtered by the filter element 10 is introduced into the water purification device 100 through the wastewater pipe 37. In addition, the filter element 10 also includes a pure water outlet 15, and the pure water outlet 15 and the first pipe 21 of the waterway plate 20 are interconnected so that the pure water obtained by filtering the filter element 10 is introduced into the water flow plate, and introduced into the water outlet mechanism 30 through the waterway plate 20, so as to obtain pure water for use.

[0073] It should be particularly noted that the water purification device 100 provided in the embodiment of the utility model only shows the part related to the technical problem to be solved by the embodiment of the utility model. It can be understood that the water purification device 100 provided in the embodiment of the utility model also includes other structures for realizing the functions of the water purification device 100, including but not limited to a control mainboard for controlling the switch of the water purification device 100, a power supply for providing electrical energy to the water purification device 100, a detection module for detecting water quality, etc.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention is described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water purification device (100), characterized in that: include: filter element (10); a waterway plate (20), the waterway plate (20) and the filter element (10) being in communication with each other; a water outlet mechanism (30), the water outlet mechanism (30) being in communication with the waterway plate (20); A pressure tank (40), wherein the pressure tank (40) and the waterway plate (20) are in communication with each other; The pure water filtered by the filter element (10) can be introduced into the pressure tank (40) through the waterway plate (20), and the pure water in the pressure tank (40) can be introduced into the filter element (10) through the waterway plate (20).

2. The water purification device (100) according to claim 1, characterized in that: The waterway plate (20) includes a first pipe (21) and a second pipe (22), the first pipe (21) and the filter element (10) are in communication with each other, the second pipe (22) and the first pipe (21) are in communication with each other, and the second pipe (22) and the pressure tank (40) are in communication with each other; The pure water filtered by the filter element (10) can be introduced into the pressure tank (40) through the second pipe (22), and the pure water in the pressure tank (40) can be introduced into the water outlet mechanism (30) through the second pipe (22).

3. The water purification device (100) according to claim 2, characterized in that: The waterway plate (20) further comprises a third pipe (23), one end of the third pipe (23) being in communication with the first pipe (21), and the other end of the third pipe being in communication with the water outlet mechanism (30).

4. The water purification device (100) according to claim 3, characterized in that: The waterway plate (20) further includes a return pipe (24), and the return pipe (24) includes a first flow channel (241) and a second flow channel (242); The filter element (10) comprises a reflux outlet (12) and a reflux inlet (11); One end of the first flow channel (241) is in communication with the reflux outlet (12) of the filter element (10), and the other end is in communication with the second flow channel (242) via a booster pump (50), and the second flow channel (242) is in communication with the reflux inlet (11); Furthermore, the first flow channel (241) is communicated with the first pipeline (21) via a first valve (243).

5. The water purification device (100) according to claim 4, characterized in that: The water outlet mechanism (30) includes a fourth pipe (31) and a buffer tank (32), and the waterway plate (20) further includes a water outlet pipe (25); The fourth pipe (31) and the third pipe (23) are in communication with each other, one end of the buffer tank (32) is in communication with the fourth pipe (31), and the other end is in communication with the water outlet pipe (25).

6. The water purification device (100) according to claim 5, characterized in that: The water outlet mechanism (30) further includes a heating component (33), and the heating component (33) includes a heating tank (331) and a three-way valve (332); The buffer tank (32) is respectively connected to the heating tank (331) and the three-way valve (332).

7. The water purification device (100) according to claim 6, characterized in that: The buffer tank (32) includes a heating pipe (321) and a normal temperature pipe (322), and the three-way valve (332) includes a first interface, a second interface, and a third interface; The heating pipe (321) is connected to the first interface of the three-way valve (332) through the heating tank (331), the normal temperature pipe (322) is connected to the second interface of the three-way valve (332), and the water outlet pipe (25) is connected to the third interface of the three-way valve (332).

8. The water purification device (100) according to claim 7, characterized in that: The heating tank (331) includes a heating inlet (3311) and a heating outlet (3312), the heating inlet (3311) is connected to the heating pipe (321), and the heating outlet (3312) is connected to the first interface of the three-way valve (332).

9. The water purification device (100) according to claim 8, characterized in that: The water outlet mechanism (30) further includes a back-suction assembly (34), and the back-suction assembly (34) includes a back-suction pipe (341) and a back-suction valve (342); The back-suction pipe (341) and the fourth pipe (31) are in communication with each other. One end of the back-suction valve (342) is in communication with the back-suction pipe (341), and the other end is in communication with the reflux pipe (24).

10. The water purification device (100) according to claim 1, characterized in that: The waterway plate (20) further comprises a water inlet pipe (36) and a wastewater pipe (37), and the filter element (10) comprises a water inlet (13) and a wastewater outlet (14); The water inlet pipe (36) is connected to the water inlet (13), the wastewater pipe (37) is connected to the wastewater outlet (14), and the water inlet pipe (36) and the wastewater pipe (37) are isolated from each other.

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