Water supply equipment

Abstract

The utility model relates to a water supply equipment, water supply equipment includes water production main road, waste water branch road, filter subassembly and cleaning filter element, filter subassembly includes shell, composite filter element and reverse osmosis filter element, shell defines first mounting cavity and second mounting cavity, composite filter element, cleaning filter element and reverse osmosis filter element along the flow direction of raw water, the water supply equipment further comprises a first installation part and a second installation part which are sequentially arranged on the water production main path, the first installation part is located in the first installation cavity, the second installation part is located in the second installation cavity, and one of the composite filter element and the cleaning filter element is selectively arranged in the first installation cavity and installed on the first installation part. The reverse osmosis filter element is arranged in the second mounting cavity and is mounted on the second mounting part; a water inlet of the wastewater branch is communicated with a wastewater opening of the reverse osmosis filter element. According to the water supply equipment disclosed by the utility model, the service life of the reverse osmosis filter element can be prolonged, and the residual use value of the reverse osmosis filter element is fully utilized.

Description

Technical Field

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

[0002] With the improvement of living standards, water supply equipment has gradually become a standard feature of quality living. Reverse osmosis water purifiers are particularly popular because they can effectively remove a variety of pollutants from tap water. Existing water supply systems are often limited by the lifespan of the pre-filter. Upon expiration of the pre-filter, the entire filter module of the water supply system needs to be replaced. However, the reverse osmosis filter still has value, so replacing the entire filter module wastes resources. Utility Model Content

[0003] The purpose of this utility model is to at least solve the problem of waste of resources caused by replacing the entire filter module when the reverse osmosis filter element is still useful. This purpose is achieved by the following means:

[0004] The utility model proposes a water supply device, which includes a water supply main line, a wastewater branch line, a filter assembly and a cleaning filter element. The filter assembly includes a shell, a composite filter element and a reverse osmosis filter element. The shell defines a first installation cavity and a second installation cavity. Along the flow direction of raw water, the water supply device also includes a first installation part and a second installation part sequentially arranged on the water supply main line, the first installation part is located in the first installation cavity, and the second installation part is located in the second installation cavity. One of the composite filter element and the cleaning filter element can be selectively arranged in the first installation cavity and installed in the first installation part, the reverse osmosis filter element is arranged in the second installation cavity and installed in the second installation part, and the water inlet of the wastewater branch is connected to the wastewater outlet of the reverse osmosis filter element.

[0005] According to the water supply equipment of the present invention, when the service life of the composite filter element in the water supply equipment reaches the preset service life and the service life of the reverse osmosis filter element has not reached the preset service life, the cleaning filter element is replaced by the composite filter element and installed on the first installation part, so that the cleaning filter element can be used to clean the reverse osmosis filter element to remove raw water impurities attached to the reverse osmosis filter element, extend the service life of the reverse osmosis filter element, and solve the problem of raw water impurities clogging the reverse osmosis filter element and slow water production speed due to long-term use. After the reverse osmosis filter element is cleaned, the new composite filter element is replaced by the cleaning filter element and installed on the first installation part, and the cleaned reverse osmosis filter element continues to be used, making full use of the remaining use value of the reverse osmosis filter element, saving resources, and saving the use cost of the water supply equipment.

[0006] In addition, the water supply equipment according to the present invention may also have the following additional technical features:

[0007] In some embodiments of the present invention, the water supply equipment also includes a water channel adapter plate, and a plurality of mutually blocked water channels are provided inside the water channel adapter plate. The first mounting portion is configured as a first plug group provided on the water channel adapter plate and connected to the water channel, and the second mounting portion is configured as a second plug group provided on the water channel adapter plate and connected to the water channel. The composite filter element or the cleaning filter element can be detachably plugged into the first plug group, and the reverse osmosis filter element can be detachably plugged into the second plug group; the main water production path includes a water inlet section and a water outlet section, and the water inlet section is connected to the water outlet section through the water channel adapter plate.

[0008] In some embodiments of the present invention, the multiple water passages include a first water inlet branch, a first water outlet branch, a second water inlet branch and a second water outlet branch; when the cleaning filter element is installed in the first installation position, the cleaning filter element is connected to the water inlet section through the first water inlet branch, and is connected to the reverse osmosis filter element through the first water outlet branch. The cleaning filter element is also connected to the reverse osmosis filter element through the second water inlet branch, and is connected to the water outlet section through the second water outlet branch.

[0009] In some embodiments of the present invention, the composite filter element includes a pre-filter element and a post-filter element. When the composite filter element is installed in the first installation position, the pre-filter element is connected to the water inlet section through the first water inlet branch, and is connected to the reverse osmosis filter element through the first water outlet branch. The post-filter element is connected to the reverse osmosis filter element through the second water inlet branch, and is connected to the water outlet section through the second water outlet branch.

[0010] In some embodiments of the present invention, the water supply equipment further includes a flushing branch, and the water inlet of the flushing branch is connected to the water outlet of the second water outlet branch.

[0011] In some embodiments of the present invention, the water supply equipment also includes: a first one-way valve, which is arranged on the second water inlet branch, and the first one-way valve is unidirectional in the direction from the reverse osmosis filter element to the water outlet end of the second water inlet branch; a second one-way valve, which is arranged on the flushing branch, and the second one-way valve is unidirectional in the direction from the second water outlet branch to the water outlet end of the flushing branch.

[0012] In some embodiments of the present invention, the water supply equipment further includes: a first solenoid valve, arranged in the water outlet section; a second solenoid valve, arranged in the flushing branch; and a wastewater valve, arranged in the wastewater branch.

[0013] In some embodiments of the present invention, the water supply equipment further includes: a first TDS probe and a second TDS probe, wherein the first TDS probe is provided at the first water inlet branch, and the second TDS probe is provided at the second water outlet branch.

[0014] In some embodiments of the present invention, the water supply equipment also includes: a first water tank, which is connected to the water outlet of the water outlet section, and a second water tank, which is respectively connected to the water inlet of the water inlet section, the water outlet of the wastewater branch, and the water outlet of the flushing branch; a self-priming pump, which is provided in the water inlet section and is used to drive the water in the water inlet section to flow from the water inlet of the water inlet section to the first water inlet branch.

[0015] In some embodiments of the present invention, the water channel includes a wastewater channel, and the reverse osmosis filter element is connected to the wastewater branch through the wastewater channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference numerals are used to denote the same components.

[0017] Figure 1 This is a structural diagram of a water supply device according to an embodiment of the present invention;

[0018] Figure 2 This is a structural diagram of a composite filter element, a reverse osmosis filter element, and a waterway adapter plate according to an embodiment of the present invention;

[0019] Figure 3 This is a structural diagram of a waterway adapter plate according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic structural diagram of a cleaning filter element according to an embodiment of the present invention;

[0021] Figure 5 This is a block diagram of the water connection of various components in the water supply equipment according to one embodiment of the present utility model;

[0022] Figure 6 This is a block diagram showing that the control device according to one embodiment of the present invention is electrically connected to the self-priming pump, the first solenoid valve, the second solenoid valve and the wastewater valve;

[0023] Figure 7 This is a schematic diagram of the connection structure between the filter assembly and the waterway adapter plate according to one embodiment of the present utility model;

[0024] Figure 8This is a schematic structural diagram of a housing according to an embodiment of the present invention.

[0025] The reference numerals in the accompanying drawings represent the following:

[0026] 1. Water supply equipment;

[0027] 30. Filter assembly; 31. Composite filter element; 32. Reverse osmosis filter element; 301. Cleaning filter element;

[0028] 302, housing; 3021, first cylinder; 30211, first mounting cavity; 3022, second cylinder; 30221, second mounting cavity; 3023, chassis; 30231, top plate; 30232, side plate; 30233, bottom plate; 30234, third mounting cavity;

[0029] 38. Waterway adapter plate; 381. First plug group; 3811. First plug; 3812. Second plug; 3813. Third plug; 3814. Fourth plug; 382. Second plug group; 3821. Fifth plug; 3822. Sixth plug; 3823. Seventh plug; 383. First water inlet branch; 384. First water outlet branch; 385. Second water inlet branch; 386. Second water outlet branch; 387. Wastewater channel;

[0030] 34. First one-way valve; 35. Second one-way valve; 36. First solenoid valve; 37. Second solenoid valve; 391. First TDS probe; 392. Second TDS probe; 310. Self-priming pump;

[0031] 20. First water tank; 12. Second water tank;

[0032] 81. Main water supply line; 811. Water inlet section; 812. Water outlet section;

[0033] 82. Wastewater branch; 821. Wastewater valve;

[0034] 83. Flushing branch;

[0035] 200. Control device; 2001. Processor; 2002. Memory. DETAILED DESCRIPTION

[0036] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0037] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0038] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0039] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0040] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is rotated, an element described as "below" or "beneath" another element or feature would subsequently be oriented "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations.

[0041] According to the embodiment of the present utility model, please combine Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 8 As shown, a water supply device 1 is proposed, which includes a water supply main path 81, a wastewater branch path 82, a filter assembly 30 and a cleaning filter element 301. The filter assembly includes a shell 302, a composite filter element 31, and a reverse osmosis filter element 32. The shell 302 defines a first installation cavity 30211 and a second installation cavity 30221. Along the flow direction of raw water, the water supply device 1 also includes a first installation portion and a second installation portion sequentially arranged in the water supply main path 81. The first installation portion is located in the first installation cavity 30211, and the second installation portion is located in the second installation cavity 30221. One of the composite filter element 31 and the cleaning filter element 301 can be selectively arranged in the first installation cavity 30211 and installed in the first installation portion. The reverse osmosis filter element 32 is arranged in the second installation cavity 30221 and installed in the second installation portion. The water inlet of the wastewater branch path 82 is connected to the wastewater outlet of the reverse osmosis filter element 32. Specifically, when the composite filter element 31 is installed in the first mounting portion, raw water first flows along the main water production path 81 to the composite filter element 31 in the first mounting portion. The raw water undergoes a primary filtration process by the composite filter element 31, removing some impurities and contaminants. The water filtered by the composite filter element 31 then flows to the reverse osmosis filter element 32 installed in the second mounting portion for a secondary filtration process. The reverse osmosis filter element 32 efficiently removes tiny particles, heavy metal ions, and organic matter from the water, producing pure water and wastewater. The pure water flows back to the main water production path 81 and is output externally, providing purified drinking water to users, while the wastewater is discharged through the wastewater branch line 82.

[0042] According to the water supply equipment 1 of the present invention, when the service life of the composite filter element 31 in the water supply equipment 1 reaches the preset service life and the service life of the reverse osmosis filter element 32 has not reached the preset service life, the cleaning filter element 301 replaces the composite filter element 31 and is installed on the first installation part, so that the cleaning filter element 301 can be used to clean the reverse osmosis filter element 32. The cleaning filter element 301 can generate a specific water flow or chemical reaction to remove raw water impurities attached to the reverse osmosis filter element 32, extend the service life of the reverse osmosis filter element 32, and solve the problem of raw water impurities clogging the reverse osmosis filter element 32 and slow water production speed due to long-term use. After the reverse osmosis filter element 32 is cleaned, the new composite filter element 31 replaces the cleaning filter element 301 and is installed on the first installation part, and the cleaned reverse osmosis filter element 32 continues to be used, making full use of the remaining use value of the reverse osmosis filter element 32, saving resources, and saving the use cost of the water supply equipment 1.

[0043] It should be noted that there are various types of cleaning filter element 301, such as physical cleaning filter element 301, chemical cleaning filter element 301, etc. Physical cleaning filter element 301 can remove impurities through mechanical action or water flow impact, while chemical cleaning filter element 301 can dissolve or decompose impurities by releasing specific chemicals.

[0044] In this embodiment, the cleaning filter element 301 is a chemical cleaning filter element 301. The cleaning filter element 301 primarily releases specific chemicals to dissolve or decompose raw water impurities attached to the reverse osmosis filter element 32. When water flows through the cleaning filter element 301, the cleaning filter element 301 releases chemicals, which flow with the water to the reverse osmosis filter element 32. The chemicals in the cleaning filter element 301 react chemically with impurities in the reverse osmosis filter element 32, causing them to be removed from the surface or pores of the reverse osmosis filter element 32. For example, for scale impurities formed by calcium, magnesium, and other ions, the chemical cleaning filter element 301 may release acidic substances that neutralize the scale, converting it into soluble salts that are then washed away by the water flow. For organic impurities, the chemical cleaning filter element 301 may release chemicals such as oxidants, which oxidize and decompose the organic matter into smaller molecules, making them easier to clean away. This effectively removes raw water impurities attached to the reverse osmosis filter element 32, prevents impurities from clogging the reverse osmosis filter element 32, and extends the service life of the reverse osmosis filter element 32.

[0045] It is understandable that a combination of multiple chemical substances can be selected for cleaning the filter element 301 according to the specific situation of impurities on the reverse osmosis filter element 32. For example, in the case of both scale and organic impurities, the cleaning filter element 301 can release acidic substances and oxidants at the same time to achieve better cleaning effect.

[0046] In some embodiments, please combine Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the water supply equipment 1 also includes a water channel adapter plate 38, and the interior of the water channel adapter plate 38 is provided with a plurality of water channels that block each other. The first mounting portion is configured as a first plug group 381 provided on the water channel adapter plate 38 and connected to the water channel. The first plug group 381 includes a plurality of plugs protruding from the water channel adapter plate 38 and connected to the water channel in the water channel adapter plate 38. The composite filter element 31 or the cleaning filter element 301 is provided with a socket that cooperates with the plug in the first plug group 381. The composite filter element 31 or the cleaning filter element 301 is detachably plugged into the first plug group 381. When the composite filter element 31 needs to be replaced or the cleaning filter element 301 needs to be used to clean the reverse osmosis filter element 32, it is only necessary to unplug the corresponding composite filter element 31 or the cleaning filter element 301 from the first plug group 381 and then insert a new filter element. The operation is very convenient.

[0047] The second mounting portion is configured as a second plug group 382 provided on the water channel adapter plate 38 and connected to the water channel. The second plug group 382 includes a plurality of plugs protruding from the water channel adapter plate 38 and connected to the water channel in the water channel adapter plate 38. The reverse osmosis filter element 32 is provided with a socket that is plugged into and matched with the plug in the second plug group 382. The reverse osmosis filter element 32 is plugged into the second plug group 382 in a detachable manner, which is convenient for operation when the reverse osmosis filter element 32 needs to be maintained or replaced.

[0048] In detail, please combine Figure 4 、 Figure 7 and Figure 8 As shown, the housing 302 includes a chassis 3023 and a first cylinder 3021 and a second cylinder 3022 connected to the chassis 3023. The first cylinder 3021 and the second cylinder 3022 are cylindrical structures. The interior of the first cylinder 3021 defines a first installation cavity 30211, and the interior of the second cylinder 3022 defines a second installation cavity 30221. The first installation cavity 30211 and the second installation cavity 30221 are open at one end away from the chassis 3023, so that the composite filter element 31 and the reverse osmosis filter element 32 can be installed into the first installation cavity 30211 and the second installation cavity 30221 through the openings at the top of the first installation cavity 30211 and the second installation cavity 30221. The chassis 3023 includes a top plate 30231, two side plates 30232 and a bottom plate 30233. The top plate 30231, the two side plates 30232 and the bottom plate 30233 are connected end to end to form a square structure and enclose a third installation cavity 30234. The first cylinder 3021 and the second cylinder 3022 are connected to the top plate 30231.

[0049] The top plate 30231 is provided with a first through hole connecting the third installation cavity 30234 and the first installation cavity 30211. The first plug group is passed through the first through hole and the end of the first plug group facing away from the water channel adapter plate is located in the first installation cavity 30211, so that the first plug group can be plugged into the composite filter element 31 or the cleaning filter element 301 when the composite filter element 31 or the cleaning filter element 301 is arranged in the first installation cavity 30211.

[0050] The top plate 30231 is also provided with a second through hole connecting the third installation cavity 30234 and the second installation cavity 30221. The second plug group is passed through the second through hole and the end of the second plug group facing away from the water channel adapter plate is located in the second installation cavity 30221, so as to facilitate the second plug group to be plugged into the reverse osmosis filter element 32 when the reverse osmosis filter element 32 is set in the second installation cavity 30221.

[0051] In this embodiment, the housing 302 connects the composite filter element 31, the reverse osmosis filter element 32 and the waterway adapter plate into an integrated structure, which makes the connection between the filter assembly 30 and the waterway adapter plate more stable, avoids the complicated connection method between multiple independent components, and thus greatly reduces potential failure points. For example, the traditional split connection may cause water leakage or reduced filtering effect due to problems such as loose interfaces and poor sealing, while the integrated structure can effectively reduce such risks. In addition, when it is necessary to replace the composite filter element 31 or clean the filter element 301, the integrated structure can make the replacement process simpler and faster. Users only need to easily disassemble and install the entire filter assembly 30 without having to handle multiple independent filter elements and connecting parts separately. This not only saves time, but also reduces the risk of damage caused by improper operation.

[0052] Please combine Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the main water production path 81 includes an inlet section 811 and an outlet section 812. The inlet section 811 is connected to the outlet section 812 via the waterway adapter plate 38. Raw water enters the waterway adapter plate 38 from the inlet section 811, is filtered by the composite filter element 31 and the reverse osmosis filter element 32, and then flows from the waterway adapter plate 38 into the outlet section 812, ultimately outputting pure water. Alternatively, during the cleaning process of the reverse osmosis filter element 32, raw water enters the waterway adapter plate 38 from the inlet section 811, passes through the cleaning filter element 301 and the reverse osmosis filter element 32, and then flows out of the wastewater branch 82, thereby completing the cleaning operation of the reverse osmosis filter element 32.

[0053] In this embodiment, the composite filter element 31 or the cleaning filter element 301 is detachably plugged into the first plug assembly 381, facilitating rapid replacement and installation of the composite filter element 31 and the cleaning filter element 301 within the water supply device 1. This simplifies the cleaning process for the reverse osmosis filter element 32. Furthermore, plugging and unplugging the composite filter element 31 and the cleaning filter element 301 is simple and convenient, requiring no specialized technicians and can be easily performed by ordinary users. This reduces the difficulty of cleaning the reverse osmosis filter element 32, allowing users to more conveniently maintain the water supply device 1, ensuring proper operation of the device and ensuring water quality.

[0054] Specifically, the multiple water channels include a first water inlet branch 383, a first water outlet branch 384, a second water inlet branch 385, a second water outlet branch 386, and a wastewater channel 387. The outlet end of the wastewater channel 387 is connected to the water inlet end of the wastewater channel 82. The first plug assembly 381 includes a first plug 3811 connected to the first water inlet branch 383, a second plug 3812 connected to the water inlet end of the first water outlet branch 384, a third plug 3813 connected to the water outlet end of the second water inlet branch 385, and a fourth plug 3814 connected to the water inlet end of the second water outlet branch 386. The second plug assembly 382 includes a fifth plug 3821 connected to the water outlet end of the first water outlet branch 384, a sixth plug 3822 connected to the water inlet end of the second water inlet branch 385, and a seventh plug 3823 connected to the water inlet end of the wastewater channel 387.

[0055] The cleaning filter element 301 is provided with four jacks, which are respectively connected to the first plug 3811, the second plug 3812, the third plug 3813 and the fourth plug 3814 in a detachable manner. The reverse osmosis filter element 32 is provided with three jacks, which are respectively connected to the fifth plug 3821, the sixth plug 3822 and the seventh plug 3823 in a detachable manner. When the cleaning filter element 301 is installed in the first installation position, the cleaning filter element 301 is connected to the water inlet section 811 through the first water inlet branch 383, and is connected to the reverse osmosis filter element 32 through the first water outlet branch 384. The cleaning filter element 301 is also connected to the reverse osmosis filter element 32 through the second water inlet branch 385, and is connected to the water outlet section 812 through the second water outlet branch 386. The reverse osmosis filter element 32 is connected to the wastewater branch 82 through the wastewater passage 387.

[0056] In this embodiment, Figure 5As shown, during the process of cleaning the reverse osmosis filter element 32, the raw water flows through the following sequence: the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82. Wastewater after flushing the reverse osmosis filter element 32 is discharged through the wastewater branch 82. The above raw water flow sequence allows the reverse osmosis filter element 32 to be fully flushed using the flushing filter element. It should be noted that during the cleaning process of the reverse osmosis filter element 32, the flow of raw water also includes another flow path. This other flow path is, in order, the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the sixth plug 3822, the second water inlet branch 385, the third plug 3813, the cleaning filter element 301, the fourth plug 3814, and the second water outlet branch 386. The wastewater after flushing the reverse osmosis filter element 32 is discharged through the second water outlet branch 386. This arrangement allows the reverse osmosis filter element 32 to be flushed from two different paths, ensuring that the water flow reaches different parts of the reverse osmosis filter element 32, including some hard-to-reach corners and pores. This can more comprehensively remove impurities attached to the filter element and improve the thoroughness of the cleaning. The water flow from different paths can produce different flushing directions and forces, forming a multi-angle impact on impurities. For example, water flow from one path can pass through the reverse osmosis filter element 32 and then flush the reverse osmosis filter element 32 from the waste water outlet of the reverse osmosis filter element 32, and water flow from another path can pass through the reverse osmosis filter element 32 and flush the reverse osmosis filter element 32 from the pure water outlet of the reverse osmosis filter element 32 (that is, the socket that is plugged into the sixth plug 3822), thereby more comprehensively removing impurities attached to the reverse osmosis filter element 32 and improving the thoroughness of cleaning.

[0057] In some embodiments, please combine Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the composite filter element 31 includes a pre-filter element (not shown in the figure) and a post-filter element (not shown in the figure), the pre-filter element is provided with a jack that matches the first plug 3811 and the second plug 3812, and the post-filter element is provided with a jack that matches the third plug 3813 and the fourth plug 3814. When the composite filter element 31 is installed in the first installation position, the pre-filter element is connected to the first water inlet branch 383 and the first outlet branch 384 through the first plug 3811 and the second plug 3812 respectively. The water branch 384 is connected, and the post-filter element is connected to the second water inlet branch 385 and the second water outlet branch 386 through the third plug 3813 and the fourth plug 3814 respectively, so that the pre-filter element is connected to the water inlet section 811 through the first water inlet branch 383, and is connected to the reverse osmosis filter element 32 through the first water outlet branch 384, and the post-filter element is connected to the reverse osmosis filter element 32 through the second water inlet branch 385, and is connected to the water outlet section 812 through the second water outlet branch 386.

[0058] During the water production process of the water supply device 1, the raw water flows through the following sequence: the water inlet section 811, the first water inlet branch 383, the first plug 3811, the pre-filter, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, and the reverse osmosis filter 32. After entering the reverse osmosis filter 32, the raw water generates pure water and wastewater. The pure water passes through the sixth plug 3822, the second water inlet branch 385, the third plug 3813, the post-filter, the fourth plug 3814, the second water outlet branch 386, and the water outlet section 812. The wastewater is discharged from the wastewater outlet of the reverse osmosis filter 32 via the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82. Specifically, the raw water first undergoes a first filtration through the pre-filter, then a second filtration through the reverse osmosis filter 32, and finally a third filtration through the post-filter. Finally, the resulting pure water is discharged through the water outlet section 812.

[0059] In this embodiment, please combine Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the water supply device 1 further includes a flushing branch 83, the water inlet of the flushing branch 83 being connected to the water outlet of the second water outlet branch 386. By providing the flushing branch 83, when flushing the reverse osmosis filter element 32, the pure water outlet of the reverse osmosis filter element 32 can also be flushed. That is, the flushing path is the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the sixth plug 3822, the second water inlet branch 385, the third plug 3813, the cleaning filter element 301, the fourth plug 3814, the second water outlet branch 386, and the flushing branch 83. Wastewater after flushing the reverse osmosis filter element 32 is discharged through the flushing branch 83.

[0060] Furthermore, the water supply device 1 also includes a first one-way valve 34, a second one-way valve 35, a first water tank 20, a second water tank 12, and a self-priming pump 310. The first one-way valve 34 is located in the second water inlet branch. The first one-way valve 34 is unidirectional in the direction from the reverse osmosis filter element 32 to the post-filter element. Pure water filtered by the reverse osmosis filter element 32 flows from the pure water outlet of the reverse osmosis filter element 32 into the second water inlet branch 385, then flows through the first one-way valve 34 and into the post-filter element through the third plug 3813. The second one-way valve 35 is located in the flushing branch 83. The second one-way valve 35 is unidirectional in the direction from the second water outlet branch 386 to the second water tank 12. The first water tank 20 is connected to the water outlet of the water outlet section 812, and the second water tank 12 is respectively connected to the water inlet of the water inlet section 811, the water outlet of the wastewater branch 82, and the water outlet of the flushing branch 83. The self-priming pump 310 is disposed in the water inlet section 811 and is used to drive the water in the water inlet section 811 to flow from the water inlet of the water inlet section 811 to the first water inlet branch 383. During the flushing process of the pure water outlet of the reverse osmosis filter element 32, the second one-way valve 35 can prevent the water containing impurities after flushing the reverse osmosis filter element 32 from flowing back from the second water tank 12 to the second water outlet branch 386 and the water outlet section 812, thereby preventing contamination of the water outlet section 812 and the first water tank 20 connected to the water outlet section 812.

[0061] Furthermore, the water supply device 1 includes a first solenoid valve 36, a second solenoid valve 37, and a wastewater valve 821. The first solenoid valve 36 is located in the outlet section 812, the second solenoid valve 37 is located in the flushing branch 83, and the wastewater valve 821 is located in the wastewater branch 82. The first solenoid valve 36 and the second solenoid valve 37 respectively control the connection or closure of the outlet section 812 and the flushing branch 83, thereby controlling the flow path of water. The wastewater valve 821 controls the water flow in the wastewater branch 82 by adjusting its own opening.

[0062] In detail, in the process of using the cleaning filter element 301 to clean the reverse osmosis filter element 32, in the path of flushing the reverse osmosis filter element 32 through the wastewater branch 82, the first solenoid valve 36 and the second solenoid valve 37 are closed, and the wastewater valve 821 increases its own opening. The flow path of the raw water is, in sequence, the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82. The wastewater after flushing the reverse osmosis filter element 32 is discharged through the wastewater branch 82.

[0063] In the path of flushing the reverse osmosis filter element 32 using the flushing branch 83, the first solenoid valve 36 is closed, the second solenoid valve 37 is opened, and the wastewater valve 821 is reduced to the minimum opening. At this time, the flow path of the raw water is the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the sixth plug 3822, the second water inlet branch 385, the third plug 3813, the cleaning filter element 301, the fourth plug 3814, the second water outlet branch 386, and the flushing branch 83. The wastewater after flushing the reverse osmosis filter element 32 is discharged through the flushing branch 83.

[0064] Furthermore, if Figure 5 As shown, the water supply equipment 1 also includes a first TDS probe 391 and a second TDS probe 392. The first TDS probe 391 is located in the first water inlet branch 383, and the second TDS probe 392 is located in the second water outlet branch 386. The first TDS probe 391 is used to detect the inlet TDS of the raw water in the first water inlet branch 383, and the second TDS probe 392 is used to detect the outlet TDS of the pure water in the second water outlet branch 386. Based on the inlet TDS and outlet TDS detected by the first TDS probe 391 and the second TDS probe 392, it can be determined whether the desalination rate of the pure water in the outlet waterway meets the standard. TDS is the abbreviation of Total Dissolved Solids, which is the full name in Chinese. TDS refers to the total amount of all solutes in water, including both inorganic and organic matter. TDS primarily reflects the concentration of ions such as calcium, magnesium, sodium, and potassium in water, as well as the total amount of dissolved solids in the water.

[0065] Understandably, when the first TDS probe 391 and the second TDS probe 392 detect that the outlet water desalination rate does not meet the standard, the second solenoid valve 37 opens and the first solenoid valve 36 closes, and the water in the second outlet branch 386 flows to the flushing branch 83, and finally flows back to the second water tank 12 or is directly discharged as wastewater through the wastewater direct discharge pipe. When the first TDS probe 391 and the second TDS probe 392 detect that the outlet water desalination rate meets the standard, the second solenoid valve 37 closes and the first solenoid valve 36 opens, and the water in the second outlet branch 386 flows to the outlet section 812 and is stored in the first water tank 20 for user use.

[0066] In detail, please combine Figure 2 and Figure 5As shown, with the composite filter element 31 installed in the first mounting portion and the water supply apparatus 1 producing water, raw water from the second water tank 12 flows through the water inlet section 811 into the first water inlet branch 383. At this point, the first TDS probe 391 detects the inlet TDS of the raw water. The raw water then enters the pre-filter element through the first plug 3811. After coarse filtration by the pre-filter element, it flows through the second plug 3812 into the first water outlet branch 384. It then enters the reverse osmosis filter element 32 through the fifth plug 3821. After filtration by the reverse osmosis filter element 32, the water is divided into a pure water channel and a wastewater channel. The pure water flows from the reverse osmosis outlet through the sixth plug 3822 into the second water inlet branch 385. It then flows through the first one-way valve 34 and the third plug 3813 into the post-filter element for further filtration. The re-filtered pure water flows through the fourth plug 3814 into the second water outlet branch 386. At this point, the second TDS probe 392 detects the outlet TDS of the pure water. When the outlet water desalination rate meets the standard, the second solenoid valve 37 closes and the first solenoid valve 36 opens, allowing the water in the second outlet branch 386 to flow to the outlet section 812. The water in the outlet section 812 then flows to and is stored in the first water tank 20. When the first TDS probe 391 and the second TDS probe 392 detect that the outlet water desalination rate does not meet the standard, the second solenoid valve 37 opens and the first solenoid valve 36 closes. The pure water in the second outlet branch 386 flows through the flushing branch 83, then through the second check valve 35 and the second solenoid valve 37, into the second water tank 12, or is discharged directly as wastewater through the wastewater discharge pipe. Wastewater filtered by the reverse osmosis filter 32 flows from the wastewater outlet through the seventh plug 3823 and the wastewater branch 82, then through the wastewater valve 821, into the second water tank 12, or is discharged directly as wastewater through the wastewater discharge pipe.

[0067] When a user draws drinking water, the outlet TDS increases with the time the user draws water due to wastewater backflow. Therefore, the design activates the direct wastewater discharge process after the user draws drinking water for a certain period of time. This maintains normal water production, opens the second solenoid valve 37, closes the first solenoid valve 36, and drains wastewater from the flushing branch 83 and the wastewater branch 82 directly through the direct wastewater discharge pipe, preventing it from entering the second water tank 12. The outlet TDS quickly returns to its initial level, with minimal impact on drinking water flux.

[0068] According to the water supply equipment proposed in this utility model, Figure 5 As shown, the cleaning method of the water supply equipment includes the following steps:

[0069] Step S101: Acquire the first operating time of the water supply device 1;

[0070] Step S102: issuing a core replacement and cleaning signal based on the first operating time being greater than a preset time;

[0071] Step S103: installing the cleaning filter element 301 on the first installation portion according to the core replacement and cleaning signal to replace the composite filter element 31;

[0072] Step S104: Control the passages of the water main channel 81 and the wastewater branch channel 82 to perform multiple rounds of flushing on the reverse osmosis filter element 32.

[0073] In step S101 and step S102, the first operating time of the water supply device 1 refers to the usage time of the water supply device 1.

[0074] During operation, the water supply device 1 continuously records its usage time, which is the first operating time. This time information can be accurately obtained using a built-in timer or a control system connected to the device. For example, the water supply device 1 starts counting when it is first started. Each time a unit of time passes, the timer increases by a corresponding value, thereby reflecting the device's operating time in real time.

[0075] The preset duration is determined by the service life of the composite filter element 31 (PCB filter element). Different models of composite filter elements 31 may have different service lives. When the first operating time recorded by the device exceeds the preset duration, the control system automatically issues a core replacement and cleaning signal. The core replacement and cleaning signal can be an electronic signal that triggers an indicator light on the device to flash, an audible prompt, or a notification sent via a network connection to a mobile phone, computer, or other device of the relevant personnel.

[0076] When the usage time of the water supply equipment 1 reaches the service life of the composite filter element 31 (i.e., PCB filter element), that is, the first operating time is greater than the preset time, the composite filter element 31 needs to be replaced, and the core replacement and cleaning operations in steps S103 and S104 are performed.

[0077] In step S103 , the composite filter element 31 to be replaced is unplugged from the first plug assembly 381 , and then the cleaning filter element 301 is inserted to replace the composite filter element 31 , which is a convenient operation.

[0078] In step S104, the main water supply path 81 and the wastewater branch 82 are controlled, and the flow path of the raw water is the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the seventh plug 3823, the wastewater path 387, and the wastewater branch 82. The wastewater after flushing the reverse osmosis filter element 32 is discharged through the wastewater branch 82, so that the reverse osmosis filter element 32 can be cleaned by the cleaning filter element 301. The core 301 can generate a specific water flow or chemical reaction to remove raw water impurities attached to the reverse osmosis filter element 32, extend the service life of the reverse osmosis filter element 32, and solve the problem of raw water impurities clogging the reverse osmosis filter element 32 and slow water production speed due to long-term use. After the reverse osmosis filter element 32 is cleaned, the new composite filter element 31 replaces the cleaned filter element 301 and is installed in the first installation part. The cleaned reverse osmosis filter element 32 continues to be used, making full use of the remaining use value of the reverse osmosis filter element 32, saving resources, and saving the use cost of the water supply equipment 1.

[0079] In other embodiments, please combine Figure 5 As shown, the cleaning method of the water supply equipment may also include the following steps:

[0080] Step S201: Acquire the first operating time of the water supply device 1;

[0081] Step S202: issuing a core replacement and cleaning signal based on the first operating time being greater than a preset time;

[0082] Step S203: installing the cleaning filter element 301 on the first installation portion according to the core replacement and cleaning signal to replace the composite filter element 31;

[0083] Step S204: controlling the water inlet section 811, the first water inlet branch 383, the first water outlet branch 384, the wastewater passage 387 and the wastewater branch 82 to open in sequence, and controlling the water outlet section 812 and the flushing branch 83 to be disconnected;

[0084] Step S205: First round of core replacement and flushing, controlling the cleaning filter element 301 to flush the reverse osmosis filter element 32 for a first period of time;

[0085] Step S206: Sending a first water change signal for the second water tank 12;

[0086] Step S207: Execute step S208 according to the replacement of the raw water in the second water tank 12;

[0087] Step S208: a second round of core replacement and flushing, controlling the cleaning filter element 301 to flush the reverse osmosis filter element 32 for a second period of time.

[0088] In this embodiment, step S201 is the same as step S101, step S202 is the same as step S102, and step S203 is the same as step S103, which will not be repeated here.

[0089] In step S204, in the process of using the cleaning filter element 301 to clean the reverse osmosis filter element 32, in the path of flushing the reverse osmosis filter element 32 through the wastewater branch 82, the first solenoid valve 36 and the second solenoid valve 37 are closed, and the wastewater valve 821 increases its own opening. The flow path of the raw water is, in sequence, the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82. The wastewater after flushing the reverse osmosis filter element 32 is discharged through the wastewater branch 82.

[0090] In steps S205 to S208, the cleaning filter element 301 is controlled to flush the reverse osmosis filter element 32 for the first time period, that is, according to the flushing path in step S204, the self-priming pump 310 is controlled to start, flush the reverse osmosis filter element 32, and continue for the first time period. In the first round of core flushing, the self-priming pump 310 is started, the first solenoid valve 36 and the second solenoid valve 37 are closed, and the opening of the waste water valve 821 is adjusted to the maximum value. Specifically, after starting the self-priming pump 310, the self-priming pump 310 drives the water in the water inlet section 811 of the water production main road 81 from the second water tank 12 to the direction of the first water inlet main road. The raw water in the second water tank 12 is sucked into the water inlet section 811 under the driving action of the self-priming pump 310, and flows into the cleaning filter element 301 through the first water inlet branch 383 and the first plug 3811 in turn. When the raw water passes through the cleaning filter element 301, the cleaning filter element 301 precipitates chemical substances (such as acidic substances and oxidants, etc.) The chemical substances are dissolved in the raw water and flow with the raw water through the second plug 3812, the first outlet branch 384, and the fifth plug 3821 into the reverse osmosis filter element 32. The chemical substances react with scale and other impurities in the reverse osmosis filter element 32, causing the scale and other impurities to be removed from the surface or pores of the reverse osmosis filter element 32 and converted into soluble salts. These salts are then flushed away by the water flow through the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82, and finally flow back into the second water tank 12 through the wastewater branch 82. After the first flushing period, the first round of core replacement and flushing ends.

[0091] As can be imagined, after the first round of core replacement and flushing is completed, scale and other impurities in the reverse osmosis filter element 32 are dissolved into a soluble salt solution and ultimately discharged into the second water tank 12. Therefore, after the first flushing period, the concentration of the soluble salt solution in the second water tank 12 gradually increases. Since the water in the second water tank 12 circulates during the flushing process, the concentration of the soluble salt solution in the raw water used to flush the reverse osmosis filter element 32 also gradually increases, which is not conducive to continuing to flush the reverse osmosis filter element 32. Therefore, after the first round of core replacement and flushing is completed, the raw water in the second water tank 12 needs to be replaced.

[0092] In step S206, after the first round of core replacement and flushing is completed, the first water change signal for the second water tank 12 is issued to prompt the user to change the water in the second water tank 12. The water change signal can be an electronic signal that triggers the indicator light on the device to flash, emit a sound prompt, or send a notification to the mobile phone, computer and other devices of the relevant personnel through a network connection.

[0093] In step S207, after the user completes the water change operation, a second round of core replacement and flushing is performed. In this step, the control device 200 can detect whether the water change operation is completed based on the change in the water level in the second water tank 12. For example, when the water level in the second water tank 12 first drops to the lower water level limit and then rises to the upper water level limit, it is determined that the user has completed the water change operation in the second water tank 12, and the upper water level limit is greater than the lower water level limit.

[0094] In step S208, during the second round of core replacement and flushing, the self-priming pump 310 is controlled to start, the reverse osmosis filter element 32 is flushed, and the second time period is continued. During the second round of core replacement and flushing, the self-priming pump 310 is started, the first solenoid valve 36 and the second solenoid valve 37 are closed, and the opening of the waste water valve 821 is adjusted to the maximum value. Specifically, after starting the self-priming pump 310, the self-priming pump 310 drives the water in the water inlet section 811 of the water production main road 81 to move from the second water tank 12 to the first water inlet main road. The raw water in the second water tank 12 is sucked into the water inlet section 811 under the driving action of the self-priming pump 310, and flows into the cleaning filter element 301 through the first water inlet branch 383 and the first plug 3811 in turn. When the raw water passes through the cleaning filter element 301, the cleaning filter element 301 precipitates chemical substances (such as acidic substances and oxidants, etc.) and dissolves As the raw water flows through the second plug 3812, the first outlet branch 384, and the fifth plug 3821 into the reverse osmosis filter element 32, the chemical substances react with scale and other impurities in the reverse osmosis filter element 32, causing the scale and other impurities to be removed from the surface or pores of the reverse osmosis filter element 32 and converted into soluble salts. These salts are then flushed away from the wastewater outlet of the reverse osmosis filter element 32 through the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82, and finally flow back into the second water tank 12 through the wastewater branch 82. After the second flushing period, the second core replacement flushing cycle ends.

[0095] In some embodiments, the first time period can be set to any value between 5 minutes and 15 minutes, for example, 5 minutes, 8 minutes, 10 minutes, 12 minutes, 13 minutes, 14 minutes, 15 minutes, etc. The second time period can be set to any value between 10 minutes and 20 minutes, for example, 10 minutes, 12 minutes, 14 minutes, 15 minutes, 18 minutes, 19 minutes, 20 minutes, etc., and the second time period is greater than the first time period.

[0096] In an exemplary embodiment, the first time period is set to 10 minutes, and the second time period is set to 15 minutes.

[0097] In this embodiment, the first round of flushing is mainly to preliminarily remove some obvious impurities and contaminants on the surface of the reverse osmosis filter element 32. As the flushing proceeds, some stubborn stains and sediments may require longer time and stronger water flow impact to be removed. The second time period is longer than the first time period, and the second round of core replacement flushing lasts longer, which can allow the cleaning filter element 301 to have more time to more thoroughly flush the reverse osmosis filter element 32, improve the flushing effect, and ensure that the reverse osmosis filter element 32 is restored to a better filtering performance. For example, some fine particles may not be completely washed away in the first round of flushing, but in the second round of longer flushing, due to the longer duration of the water flow, these particles have a greater chance of being washed away.

[0098] It should also be noted that after the first flush, the state of the reverse osmosis filter element 32 may change. Some previously blocked pores may partially open, and at the same time, new impurities may enter the reverse osmosis filter element 32. A longer second time period can better accommodate such changes, allowing for a more targeted flush based on the state of the reverse osmosis filter element 32 after the first flush.

[0099] In other embodiments, please combine Figure 5 As shown, the cleaning method of the water supply equipment may also include the following steps:

[0100] Step S301: Acquire the first operating time of the water supply device 1;

[0101] Step S302: issuing a core replacement and cleaning signal based on the first operating time being greater than a preset time;

[0102] Step S303: installing the cleaning filter element 301 on the first installation portion according to the core replacement and cleaning signal to replace the composite filter element 31;

[0103] Step S304: controlling the water inlet section 811, the first water inlet branch 383, the first water outlet branch 384, the wastewater passage 387 and the wastewater branch 82 to open in sequence, and controlling the water outlet section 812 and the flushing branch 83 to be disconnected;

[0104] Step S305: First round of core replacement and flushing, controlling the cleaning filter element 301 to flush the reverse osmosis filter element 32 for a first period of time;

[0105] Step S306: Sending a first water change signal for the second water tank 12;

[0106] Step S307: Execute step S208 according to the replacement of the raw water in the second water tank 12;

[0107] Step S308: Second round of core replacement and flushing, controlling the cleaning filter element 301 to flush the reverse osmosis filter element 32 for a second period of time;

[0108] Step S309: Sending a second water change signal for the second water tank 12;

[0109] Step S310: Execute step S311 according to the replacement of the raw water in the second water tank 12;

[0110] Step S311: Control the water inlet section 811, the first water inlet branch 383, the first water outlet branch 384, the second water inlet branch 385, the second water outlet branch 386 and the flushing branch 83, control the wastewater branch 82 and the water outlet section 812 to be disconnected, and flush the reverse osmosis filter element 32 for the third time period.

[0111] In this embodiment, steps S301 to S308 are the same as steps S201 to S208 and are not described in detail here.

[0112] In step S309 and step S310, after the second round of core replacement and flushing is completed, a second water change signal for the second water tank 12 is issued to prompt the user to change the water in the second water tank 12. The water change signal can be an electronic signal that triggers the indicator light on the device to flash, emits a sound prompt, or sends a notification to the mobile phone, computer, or other devices of the relevant personnel through a network connection. After the user completes the water change operation, the third round of core replacement and flushing is performed. In this step, the control device 200 can detect whether the water change operation is completed based on the change of the water level in the second water tank 12. For example, when the water level in the second water tank 12 first drops to the lower limit value of the water level and then rises to the upper limit value of the water level, it is judged that the user has completed the water change operation in the second water tank 12, and the upper limit value of the water level is greater than the lower limit value of the water level.

[0113] In step S311, during the third round of core replacement and cleaning, the self-priming pump 310 is started, the first solenoid valve 36 is closed, the opening of the waste water valve 821 is adjusted to the minimum value, and the second solenoid valve 37 is opened. Specifically, after starting the self-priming pump 310, the self-priming pump 310 drives the water in the water inlet section 811 of the water production main road 81 to move from the second water tank 12 to the first water inlet main road. The raw water in the second water tank 12 is sucked into the water inlet section 811 under the driving action of the self-priming pump 310, and flows into the cleaning filter element 301 through the first water inlet branch 383 and the first plug 3811 in turn. When the raw water passes through the cleaning filter element 301, the cleaning filter element 301 precipitates chemical substances (such as acidic substances and oxidants, etc.) and dissolves in the raw water, and is discharged with the raw water through the second plug 3812, Water flows from the first outlet branch 384 and the fifth plug 3821 into the reverse osmosis filter element 32. The chemical reacts with scale and other impurities in the reverse osmosis filter element 32, removing the scale and other impurities from the surface or pores of the reverse osmosis filter element 32 and converting them into soluble salts. The water then flows from the pure water outlet of the reverse osmosis filter element 32 through the sixth plug 3822, the second inlet branch 385, the third plug 3813, the cleaning filter element 301, the fourth plug 3814, the second outlet branch 386, the flushing branch 83, and finally back into the second water tank 12 through the flushing branch 83. After the third flushing period, the third core replacement flushing cycle ends. The third period is equal to the second period.

[0114] In this embodiment, the reverse osmosis filter element 32 is flushed through the first, second, and third core-changing flushing cycles, respectively, from both the wastewater outlet and the pure water outlet of the reverse osmosis filter element 32. This ensures that the water flow reaches different parts of the reverse osmosis filter element 32, including some hard-to-reach corners and pores. This allows for more comprehensive removal of impurities adhering to the filter element, improving the thoroughness of the cleaning. The water flow in different paths can produce different flushing directions and forces, creating a multi-angle impact on impurities, thereby more comprehensively removing impurities adhering to the reverse osmosis filter element 32 and improving the thoroughness of the cleaning.

[0115] In some embodiments, please combine Figure 5 As shown, after completing the third round of core replacement and flushing steps, the cleaning method further includes the following steps:

[0116] Step S401: Install a new composite filter element 31 on the first installation portion to replace the clean filter element 301;

[0117] Step S402: Control the water inlet section 811, the first water inlet branch 383, the first water outlet branch 384, the second water inlet branch 385, the second water outlet branch 386, the flushing branch 83 and the wastewater branch 82, control the water outlet section 812 to be disconnected, and flush the composite filter element 31 and the reverse osmosis filter element 32 for the fourth time period.

[0118] In step S401, the cleaning filter element 301 is unplugged from the first plug assembly 381, and then a new composite filter element 31 is inserted to replace the cleaning filter element 301, which is easy to operate.

[0119] In step S402, after the water supply device 1 completes the core replacement and flushing and replaces the new composite filter element 31, it is necessary to perform a self-cleaning operation on the composite filter element 31. In this operation, the self-priming pump 310 is started, the first solenoid valve 36 is closed, the opening of the wastewater valve 821 is adjusted to the maximum value, and the second solenoid valve 37 is opened.

[0120] Specifically, after starting the self-priming pump 310, the self-priming pump 310 drives the water in the water inlet section 811 of the water production main path 81 to move from the second water tank 12 to the first water inlet main path. The raw water in the second water tank 12 is sucked into the water inlet section 811 under the driving action of the self-priming pump 310, and flows into the pre-filter element through the first water inlet branch 383 and the first plug 3811 in turn. When the raw water passes through the pre-filter element, the raw water washes away the protective liquid and tiny particles, debris such as carbon powder and other impurities in the pre-filter element, and flows with the raw water through the second plug 3812, the first water outlet branch 384 and the fifth plug 3821 to the reverse osmosis filter element 32. The raw water carrying impurities is discharged in the pre-filter element. The reverse osmosis filter element 32 is divided into two paths. One path of raw water carries a large amount of impurities and is flushed away through the wastewater outlet of the reverse osmosis filter element 32 via the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82, and finally flows back to the second water tank 12 through the wastewater branch 82. The other path of raw water is filtered by the reverse osmosis filter element 32, and flows from the pure water outlet of the reverse osmosis filter element 32 through the sixth plug 3822, the second water inlet branch 385, and the third plug 3813 to the post-filter element, and flushes the post-filter element, flushing away debris such as carbon powder and other impurities in the post-filter element, and then flows back to the second water tank 12 through the fourth plug 3814, the second water outlet branch 386, and the flushing branch 83.

[0121] In this embodiment, flushing the new composite filter element 31 can effectively remove impurities brought by the composite filter element 31 during the manufacturing and storage process, ensuring that the equipment composite filter element 31 can provide clean and safe drinking water after being put into use.

[0122] In some embodiments, please combine Figure 5 and Figure 6As shown, the water supply equipment 1 also includes a control device 200, which is electrically connected to the self-priming pump 310, the first TDS probe 391, the second TDS probe 392, the wastewater valve 821, the first solenoid valve 36, and the second solenoid valve 37. Specifically, in the first round of core replacement and cleaning operation, the control device 200 controls the self-priming pump 310 to start, the first solenoid valve 36 and the second solenoid valve 37 to close, and the opening of the wastewater valve 821 to the maximum value, and continues for a first time period. In the second round of core replacement and cleaning operation, the control device 200 controls the self-priming pump 310 to start, the first solenoid valve 36 and the second solenoid valve 37 to close, and the opening of the wastewater valve 821 to the maximum value, and continues for a second time period. In the third round of core replacement and cleaning operation, the control device 200 controls the self-priming pump 310 to start, the first solenoid valve 36 to close, the second solenoid valve 37 to open, and the opening of the wastewater valve 821 to the minimum value, and continues for a third time period. After the new composite filter element 31 is replaced, the control device 200 controls the self-priming pump 310 to start, the first solenoid valve 36 to close, the second solenoid valve 37 to open, and the opening of the wastewater valve 821 to the maximum value, and continues for the fourth time period.

[0123] In this embodiment, the control device 200 includes a memory 2002 and at least one processor 2001, wherein the memory 2002 stores programs or instructions that can be run on the processor 2001, and when the processor 2001 executes the program or instructions, the steps of the cleaning method of the water supply equipment 1 in this application are implemented.

[0124] According to an embodiment of the present invention, a computer storage medium is also provided, wherein the computer storage medium stores computer-readable instructions. When the computer-readable instructions are executed by one or more processors, the one or more processors execute the water supply equipment cleaning method according to any embodiment of the present invention. The cleaning method may include, but is not limited to, at least one of the following steps: obtaining a first operating time of the water supply equipment; issuing a core replacement cleaning signal based on the first operating time being greater than a preset time; installing a cleaning filter element in the first installation portion to replace the composite filter element based on the core replacement cleaning signal; and controlling the main water supply line and the wastewater branch line to perform multiple rounds of flushing on the reverse osmosis filter element.

[0125] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable storage medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable storage medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable storage media include the following: an electrical connection with one or more wires (electronic device), a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM, or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable storage medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0126] It should be understood that the various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement the hardware: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0127] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A water supply device, characterized in that: The water supply equipment includes a main water production line, a wastewater branch line, a filter assembly and a cleaning filter element. The filter assembly includes a shell, a composite filter element and a reverse osmosis filter element. The shell defines a first installation cavity and a second installation cavity. Along the flow direction of raw water, the water supply equipment also includes a first installation part and a second installation part sequentially arranged on the main water production line. The first installation part is located in the first installation cavity, and the second installation part is located in the second installation cavity. One of the composite filter element and the cleaning filter element can be selectively arranged in the first installation cavity and installed on the first installation part. The reverse osmosis filter element is arranged in the second installation cavity and installed on the second installation part. The water inlet of the wastewater branch is connected to the wastewater outlet of the reverse osmosis filter element.

2. The water supply equipment according to claim 1, characterized in that The water supply equipment further includes a water channel adapter plate, wherein a plurality of mutually isolated water channels are provided inside the water channel adapter plate, the first mounting portion is configured as a first plug group provided on the water channel adapter plate and in communication with the water channels, the second mounting portion is configured as a second plug group provided on the water channel adapter plate and in communication with the water channels, the composite filter element or the cleaning filter element is detachably plugged into the first plug group, and the reverse osmosis filter element is detachably plugged into the second plug group; The main water production path includes a water inlet section and a water outlet section, and the water inlet section is connected to the water outlet section through the water path adapter plate.

3. The water supply equipment according to claim 2, characterized in that: The plurality of water channels include a first water inlet branch, a first water outlet branch, a second water inlet branch, and a second water outlet branch; When the cleaning filter element is installed on the first installation part, the cleaning filter element is connected to the water inlet section through the first water inlet branch, and is connected to the reverse osmosis filter element through the first water outlet branch. The cleaning filter element is also connected to the reverse osmosis filter element through the second water inlet branch, and is connected to the water outlet section through the second water outlet branch.

4. The water supply equipment according to claim 3, characterized in that The composite filter element includes a pre-filter element and a post-filter element. When the composite filter element is installed on the first installation part, the pre-filter element is connected to the water inlet section through the first water inlet branch, and is connected to the reverse osmosis filter element through the first water outlet branch. The post-filter element is connected to the reverse osmosis filter element through the second water inlet branch, and is connected to the water outlet section through the second water outlet branch.

5. The water supply equipment according to claim 3 or 4, characterized in that: The water supply equipment further comprises a flushing branch, the water inlet of the flushing branch is communicated with the water outlet of the second water outlet branch.

6. The water supply equipment according to claim 5, characterized in that The water supply equipment also includes: a first one-way valve, provided in the second water inlet branch, the first one-way valve being unidirectional in a direction from the reverse osmosis filter element to the water outlet end of the second water inlet branch; A second one-way valve is provided in the flushing branch, and the second one-way valve conducts water in a one-way direction from the second water outlet branch to the water outlet end of the flushing branch.

7. The water supply equipment according to claim 5, characterized in that The water supply equipment also includes: A first solenoid valve is provided at the water outlet section; a second solenoid valve, provided in the flushing branch; The wastewater valve is arranged on the wastewater branch.

8. The water supply equipment according to claim 5, characterized in that The water supply equipment also includes: A first TDS probe and a second TDS probe, wherein the first TDS probe is arranged on the first water inlet branch, and the second TDS probe is arranged on the second water outlet branch.

9. The water supply equipment according to claim 5, characterized in that: The water supply equipment also includes: a first water tank, the first water tank being connected to the water outlet of the water outlet section, a second water tank, the second water tank being connected to the water inlet of the water inlet section, the water outlet of the wastewater branch, and the water outlet of the flushing branch respectively; A self-priming pump is provided in the water inlet section and is used to drive the water in the water inlet section to flow from the water inlet of the water inlet section to the first water inlet branch.

10. The water supply equipment according to claim 3, characterized in that The water channel includes a wastewater channel, and the reverse osmosis filter element is connected to the wastewater branch channel through the wastewater channel.

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