Water purifier

Abstract

The utility model belongs to the technical field of water purification equipment, and provides a water purifier which comprises an installation support, a water conveying pipeline is arranged on the installation support, and the two ends of the water conveying pipeline are provided with a water inlet end and a water outlet end respectively; the first filter assembly comprises a first mounting seat and an RO membrane filter element, the first mounting seat is arranged on the mounting bracket and is communicated with the water conveying pipeline, and the RO membrane filter element is detachably connected to the first mounting seat; the water storage assembly comprises a third mounting base and a water storage container, the third mounting base is arranged on the mounting support and is communicated with the first mounting base in series through a water conveying pipeline, the third mounting base is located between the first mounting base and the water outlet end, and the water storage container is detachably connected to the third mounting base; the water storage container is convenient to disassemble and assemble, does not need to be externally arranged, is small in occupied installation space, can provide enough water outlet pressure to guarantee the water outlet amount and the water outlet flow speed in the water taking process, gives consideration to efficient water outlet and convenient disassembly and assembly, and meets user requirements.

Description

Technical Field

[0001] This application relates to the field of water purification equipment technology, and in particular to a water purifier. Background Technology

[0002] With the rapid development of industrialization and urbanization, water pollution has become increasingly serious, and people are paying more and more attention to drinking water safety. Traditional tap water treatment processes are difficult to effectively remove harmful substances such as heavy metals, organic pollutants, bacteria and viruses from the water, and cannot meet people's demand for high-quality drinking water. Therefore, more and more families are choosing water purifiers to purify the water quality of their drinking water.

[0003] A water purifier is a water treatment device that performs deep filtration and purification of water according to the requirements of water use. Currently, household water purifiers on the market are mainly divided into two categories: high-flow and low-flow. High-flow water purifiers have a large RO membrane filter flow rate and do not require an external water storage tank, but they have the problem of insufficient water pressure (slow water output). On the other hand, low-flow water purifiers have a small RO membrane filter flow rate and require an external water storage tank, which has the problems of taking up more space and complicated installation. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a water purifier that solves the problem that existing water purifiers cannot simultaneously achieve high-efficiency water output and easy installation.

[0005] To achieve the above and other related objectives, this application provides a water purifier, comprising:

[0006] A water purifier, comprising:

[0007] The mounting bracket is provided with a water supply pipe, and the two ends of the water supply pipe are respectively a water inlet and a water outlet.

[0008] The first filtration assembly includes a first mounting base and an RO membrane filter element. The first mounting base is disposed on the mounting bracket and communicates with the water supply pipeline. The RO membrane filter element is detachably connected to the first mounting base.

[0009] A water storage assembly includes a third mounting base and a water storage container. The third mounting base is disposed on the mounting bracket and connected in series with the first mounting base through the water supply pipeline. The third mounting base is located between the first mounting base and the water outlet. The water storage container is detachably connected to the third mounting base.

[0010] Optionally, the water purifier further includes a second filtration assembly, which includes a second mounting base and a post-filter cartridge. The second mounting base is disposed on the mounting bracket and connected in series with the first mounting base and the third mounting base through the water supply pipeline. The second mounting base is located between the first mounting base and the third mounting base, or between the third mounting base and the water outlet. The post-filter cartridge is detachably connected to the second mounting base.

[0011] Optionally, the first mounting base is provided with a first water inlet, a first water outlet, and a second water outlet. Water in the water supply pipeline flows in from the first water inlet and is filtered through the RO membrane filter element. The filtered pure water flows from the first water outlet into the post-filter element for secondary filtration or mineralization treatment. Alternatively, the filtered pure water enters the water storage container from the first water outlet for storage, and the concentrated water produced by filtration is discharged from the second water outlet.

[0012] Optionally, the water purifier also includes a drain pipe connected to the second outlet, and the drain pipe is equipped with a first solenoid valve for controlling its opening and closing, so that the concentrated water produced by filtration enters the drain pipe from the second outlet and is discharged.

[0013] Optionally, the third mounting base is provided with a second water inlet and a third water outlet. The pure water filtered by the first filter component flows into the post-filter cartridge for secondary filtration or mineralization. The pure water after secondary filtration or mineralization enters the water storage container from the second water inlet for storage. When water is needed, the pure water in the water storage container flows out from the third water outlet for use. Alternatively, the pure water filtered by the first filter component directly enters the water storage container from the second water inlet for storage. When water is needed, the pure water in the water storage container flows out from the third water outlet and flows into the post-filter cartridge for secondary filtration or mineralization. The pure water after secondary filtration or mineralization flows out for use.

[0014] Optionally, the water storage container includes an outer shell, a top cover, and a water storage airbag. One end of the outer shell is a closed end, and the other end is an open end. The outer shell has a cavity inside to accommodate the water storage airbag. The top cover is used to close the open end of the outer shell. An end cap is provided at the bottom of the top cover, and the end cap covers the open end to seal the water storage airbag in the cavity. The top cover and the third mounting base are detachably connected by a snap-fit ​​structure. The outer shell is connected to the third mounting base through the top cover.

[0015] Optionally, the top of the upper cover has an inlet and outlet that communicate with the water storage cavity of the water storage airbag. The inlet and outlet communicate with the interior of the upper cover to form a cavity. The cavity communicates with the second inlet and the third outlet through the inlet and outlet. The end cover is provided with an inlet and outlet rod. The two ends of the inlet and outlet rod extend into the cavity and the water storage cavity of the water storage airbag, respectively, to connect the cavity and the water storage cavity of the water storage airbag. One end of the inlet and outlet rod that extends into the cavity is fitted with an air nozzle. Pure water flows in from the second inlet, passes through the inlet and outlet, enters the cavity, and then enters the water storage cavity of the water storage airbag through the inlet and outlet rod.

[0016] Optionally, the water purifier further includes a third filtration assembly, which includes a detachably connected fourth mounting base and a pre-filter. The fourth mounting base is disposed on the mounting bracket and located between the first mounting base and the water inlet. The fourth mounting base is connected in series with the first mounting base, the second mounting base, and the third mounting base through the water supply pipeline. The pre-filter is used to perform preliminary filtration on the water input from the water inlet.

[0017] Optionally, a booster pump and a pressure gauge are also provided on the water supply pipeline. The booster pump is located between the first mounting base and the water inlet, and the pressure gauge is located between the booster pump and the first mounting base. The pressure gauge is used to detect the pressure before the RO membrane filter element.

[0018] Optionally, the water supply pipeline is also equipped with a check valve and a high-pressure switch. Both the check valve and the high-pressure switch are located at the front end of the third mounting base. A sterilizing lamp is installed in the water supply pipeline near the water outlet end to disinfect and sterilize the filtered pure water before it is discharged.

[0019] In the water purifier provided in this application, both the first filter component and the water storage component are mounted on the mounting bracket. The water storage container does not need to be external, occupying little installation space. Both the first filter component and the water storage component are detachable, facilitating disassembly and assembly. By placing the water storage container between the RO membrane filter and the outlet end of the water supply pipeline, the filtered pure water can be stored in the water storage container. When water is needed, the pure water in the water storage container flows out from the outlet end first for use. The water storage container can provide sufficient outlet pressure to ensure the water volume and flow rate during the water intake process. At the same time, the water purifier simultaneously produces water and continuously supplies water, ensuring water output stability, balancing efficient water output and convenient disassembly and assembly, and meeting user needs. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a water purifier shown from a first-view perspective in Embodiment 1 of this application;

[0021] Figure 2 This is a structural schematic diagram of the water purifier shown from a second perspective in Embodiment 1 of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the first mounting base shown in Embodiment 1 of this application;

[0023] Figure 4 This is a schematic diagram of the structure of the third mounting base shown in Embodiment 1 of this application;

[0024] Figure 5 This is a schematic diagram of the structure of the water storage container shown in Embodiment 1 of this application;

[0025] Figure 6 This is a schematic diagram of the water circuit of a water purifier shown in Embodiment 1 of this application.

[0026] Part Number Explanation

[0027] 1-Mounting bracket; 2-Water supply pipeline; 3-Inlet end; 4-Outlet end; 5-First mounting seat; 6-RO membrane filter element; 7-Second mounting seat; 8-Post-filter element; 9-Third mounting seat; 10-Water storage container; 11-Drainage pipeline; 12-First solenoid valve; 13-Fourth mounting seat; 14-Pre-filter element; 15-Boost pump; 16-Second solenoid valve; 17-High pressure switch; 18-Sterilizing lamp; 19-Pressure gauge; 20-First inlet; 21-First outlet; 22-Second outlet; 23-Second inlet; 24-Third outlet; 25-Outer shell; 26-Water storage air bladder; 27-Top cover; 28-End cap; 29-Inlet / outlet insertion rod; 30-Inlet / outlet; 31-Cavity; 32-Air nozzle; 33-Check valve; 34-Faucet. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0029] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of this application, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms such as "front," "back," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this application.

[0030] It should be noted that in existing technologies, household water purifiers are generally divided into two main categories: high-flow and low-flow. High-flow water purifiers have a large RO membrane filter flow rate and do not require an external water tank. However, they suffer from insufficient water pressure and the problem of stagnant water. Insufficient water pressure can lead to unstable water flow from the faucet, affecting the user experience. It can also result in slow water flow when supplying water to a refrigerator's water tank, causing long waiting times for users. Stagnant water can cause the first cup of water left overnight to have a higher TDS concentration, affecting the taste of the water and even posing health risks. Low-flow water purifiers have a small RO membrane flow rate and often require an external water tank to ensure sufficient water flow rate. However, external water tanks present several challenges: complex installation, potential leaks at the tank connections, and the large space occupied by the external water tank, which makes disassembly and assembly more complicated within limited spaces. Furthermore, external water tanks also increase transportation costs.

[0031] Please see Figures 1 to 6 This application exemplarily proposes a water purifier, comprising:

[0032] Mounting bracket 1, on which a water supply pipe 2 is provided, with the two ends of the water supply pipe 2 being the inlet end 3 and the outlet end 4, respectively;

[0033] The first filtration assembly includes a first mounting base 5 and an RO membrane filter element 6. The first mounting base 5 is mounted on the mounting bracket 1 and connected to the water supply pipeline 2. The RO membrane filter element 6 is detachably connected to the first mounting base 5.

[0034] The water storage component includes a third mounting base 9 and a water storage container 10. The third mounting base 9 is mounted on the mounting bracket 1 and connected in series with the first mounting base 5 through the water supply pipe 2. The third mounting base 9 is located between the first mounting base 5 and the water outlet 4. The water storage container 10 is detachably connected to the third mounting base 9.

[0035] In the water purifier provided in this application, both the first filter component and the water storage component are installed on the mounting bracket 1. The water storage container 10 does not need to be externally mounted, occupying little installation space. Both the first filter component and the water storage component are detachable, making them easy to install and disassemble. By placing the water storage container 10 between the RO membrane filter element 6 and the water outlet 4, the filtered pure water is stored in the water storage container 10. When water is needed, the pure water in the water storage container 10 flows out from the water outlet 4 first for use. The water storage container 10 can provide sufficient water pressure to ensure the water output and flow rate during the water intake process. At the same time, the water purifier produces water synchronously and continuously supplies water, ensuring water output stability, taking into account both high-efficiency water output and convenient disassembly and assembly, thus meeting user needs.

[0036] In this embodiment, the water purifier further includes a second filtration assembly, which includes a second mounting base 7 and a post-filter element 8. The second mounting base 7 is mounted on the mounting bracket 1 and connected in series with the first mounting base 5 and the third mounting base 9 through the water supply pipe 2. The second mounting base 7 is located between the first mounting base 5 and the third mounting base 9, or between the third mounting base 9 and the water outlet 4. The post-filter element 8 is detachably connected to the second mounting base 7. Specifically, when the second mounting base 7 is located between the first mounting base 5 and the third mounting base 9, the tap water in the water supply pipe 2 first flows through... The purified water is filtered through the RO membrane filter 6 and then undergoes secondary filtration or mineralization treatment through the post-filter 8. The purified water after secondary filtration or mineralization treatment enters the water storage container 10 for storage. When the second mounting base 7 is located between the third mounting base 9 and the water outlet 4, the tap water in the water supply pipeline 2 is first filtered through the RO membrane filter 6, and the purified water after filtration directly enters the water storage container 10 for storage. When water needs to be taken out, the purified water flows out from the water storage container 10 and undergoes secondary filtration or mineralization treatment through the post-filter 8. The purified water after secondary filtration or mineralization treatment flows out for use.

[0037] In some embodiments, the first mounting base 5 is provided with a first inlet 20, a first outlet 21, and a second outlet 22. Water in the water supply pipeline 2 flows in from the first inlet 20 and is filtered through the RO membrane filter element 6. The filtered pure water flows from the first outlet 21 into the post-filter element 8 for secondary filtration or mineralization treatment, or the filtered pure water enters the water storage container 10 from the first outlet 21 for storage. The concentrated water produced by filtration is discharged from the second outlet 22. Specifically, the inlet 3 of the water supply pipeline 2 can be connected to a household water supply system. The tap water inlet pipe is connected, and the outlet 4 of the water supply pipe 2 can be divided into two lines, which are connected to the water faucet 34 and the refrigerator water inlet respectively. Tap water flows into the water supply pipe 2 from the inlet 3 and is filtered through the RO membrane filter 6 from the first inlet 20. The pure water filtered by the RO membrane filter 6 can be directly stored in the water storage container 10 from the first outlet 21, or the pure water filtered by the RO membrane filter 6 can flow from the first outlet 21 to the post-filter 8 for secondary filtration or mineralization before entering the water storage container 10 for storage.

[0038] In the above embodiment, the water purifier also includes a drain pipe 11 connected to the second outlet 22. A first solenoid valve 12 for controlling the opening and closing is provided on the drain pipe 11. When the water is filtered, the first solenoid valve 12 is opened, and the concentrated water produced by the RO membrane filter 6 is discharged from the second outlet 22 into the drain pipe 11.

[0039] In this embodiment, the third mounting base 9 is provided with a second water inlet 23 and a third water outlet 24. The pure water filtered by the first filter component flows into the second filter component for secondary filtration or mineralization treatment. The pure water after secondary filtration or mineralization treatment enters the water storage container 10 from the second water inlet 23 for storage. When water is needed, the pure water in the water storage container 10 flows out from the third water outlet 24 for use. Alternatively, the pure water filtered by the first filter component directly enters the water storage container 10 from the second water inlet 23 for storage. When water is needed, the pure water in the water storage container 10 flows out from the third water outlet 24 and flows into the water storage container 10. The post-filter 8 performs secondary filtration or mineralization treatment, and the purified water after secondary filtration or mineralization treatment flows out for use. Specifically, the purified water filtered by the RO membrane filter 6 can flow directly from the first outlet 21 into the water storage container 10 for storage. When water is needed, the purified water flows out from the third outlet 24 and undergoes secondary filtration or mineralization treatment by the post-filter 8 before being discharged. Alternatively, the purified water filtered by the RO membrane filter 6 flows into the post-filter 8 for secondary filtration or mineralization treatment and then enters the water storage container 10 from the second inlet 23 for storage. At this time, the purified water in the water storage container 10 can be directly used.

[0040] In some embodiments, the water storage container 10 includes an outer shell 25, a top cover 27, and a water storage airbag 26. One end of the outer shell 25 is a closed end, and the other end is an open end with an opening. The outer shell 25 has a cavity inside to accommodate the water storage airbag 26. The bottom of the top cover 27 is provided with an end cap 28, which covers the opening to seal the water storage airbag 26 in the cavity. The top cover 27 and the third mounting base 9 are detachably connected by a snap-fit ​​structure. The outer shell 25 is connected to the third mounting base 9 through the top cover 27. The snap-fit ​​structure between the top cover 27 and the third mounting base 9 enables the detachable connection between the outer shell 25 and the third mounting base 9, making it easy to assemble and disassemble the water storage container 10.

[0041] In the above embodiment, the top of the upper cover 27 is provided with an inlet / outlet 30 that communicates with the water storage cavity of the water storage airbag 26. The inlet / outlet 30 communicates with the interior of the upper cover 27 to form a cavity 31. The cavity 31 is connected to the second inlet 23 and the third outlet 24 through the inlet / outlet 30. The end cover 28 is provided with an inlet / outlet insert 29. Both ends of the inlet / outlet insert 29 extend into the cavity 31 and the water storage cavity of the water storage airbag 26, respectively, to connect the cavity 31 and the water storage cavity of the water storage airbag 26. One end of the inlet / outlet insert 29 extending into the cavity 31 is fitted with an air nozzle 32 for pure water. The water flows in through the second inlet 23, passes through the inlet / outlet 30, enters the cavity 31, and then enters the water storage chamber of the water storage bladder 26 through the inlet / outlet insert 29. Specifically, the water storage bladder 26 can be made of food-grade rubber or plastic material. The water storage bladder 26 is installed on the inlet / outlet insert 29 by adhesive or screw fixing. The upper cover 27 and the outer shell 25 can be welded together by spin welding. The end cover 28 is ultrasonically welded to the upper cover 27. The air nozzle 32 is a stainless steel air nozzle 32, which can be secondary injection molded onto the end cover 28.

[0042] In this embodiment, the water purifier further includes a third filtration assembly, which includes a detachably connected fourth mounting base 13 and a pre-filter 14. The fourth mounting base 13 is mounted on the mounting bracket 1 and located between the first mounting base 5 and the water inlet 3. The fourth mounting base 13 is connected in series with the first mounting base, the second mounting base 7, and the third mounting base 9 through the water supply pipe 2. The pre-filter 14 is used to perform preliminary filtration on the water input from the water inlet 3. Specifically, the pre-filter 14 can be a PP filter, a PP+carbon composite filter, etc., which is not limited here. After the tap water is pre-filtered by the pre-filter 14, it is then filtered by the RO membrane filter 6 of the first filtration assembly.

[0043] It is worth noting that the second mounting base 7 of the second filter assembly, the fourth mounting base 13 of the third filter assembly, and the third mounting base 9 of the water storage assembly have the same structure, all having inlet and outlet ports for the flow of tap water for filtration.

[0044] In the above embodiment, a booster pump 15 and a pressure gauge 19 are also provided on the water supply pipeline 2. The booster pump 15 is located between the first mounting base 5 and the water inlet 3, and the pressure gauge 19 is located between the booster pump 15 and the first mounting base 5. The pressure gauge 19 is used to detect the pre-membrane pressure of the RO membrane filter element 6. Specifically, a second solenoid valve 16 can also be provided between the booster pump 15 and the fourth mounting base 13 to control the opening and closing of the water circuit. The second solenoid valve 16 can also be omitted, and this is not limited here. When using the water purifier, the booster pump 15 is turned on, and the tap water first passes through the pre-filter element 14 for preliminary filtration. After being pressurized by the booster pump 15, the flow rate is increased. After passing through the pressure gauge 19, the tap water is filtered by the RO membrane filter element 6. The pressure gauge 19 displays the pre-membrane pressure of the RO membrane filter element 6, which helps the user to determine whether the RO membrane filter element 6 needs to be replaced.

[0045] In this embodiment, a check valve 33 and a high-pressure switch 17 are also provided on the water supply pipeline 2. Both the check valve 33 and the high-pressure switch 17 are located at the front end of the third mounting base 9. Specifically, the filtered pure water enters the water storage bladder 26 through the inlet and outlet plugs. As the pure water enters, the volume of the water storage bladder 26 increases, and the internal water pressure also increases further until the maximum capacity and pressure value of the water storage bladder 26 are reached, at which point the water intake stops. When the water storage bladder 26 is full of pure water, the high-pressure switch 17 detects that the pressure value of the water storage bladder 26 has reached its maximum and stops water production and intake. When water needs to be taken out, the faucet 34 or the water inlet of the refrigerator's water tank is opened. The water pressure in the water storage bladder 26 provides the power for water supply, ensuring the water flow rate and speed, and delivering the pure water in the water storage bladder 26 to the faucet 34 and the refrigerator's water tank. At the same time, the check valve 33 can prevent water backflow and ensure the stability of water output.

[0046] In some embodiments, a sterilizing lamp 18 is installed on the water supply pipeline 2 near the water outlet 4 to disinfect the filtered pure water before it is discharged. Before the water is discharged, the sterilizing lamp 18 can further disinfect the flowing pure water, thereby further improving the user's water safety.

[0047] In summary, in the water purifier provided in this application, both the first filter component and the water storage component are installed on the mounting bracket 1. The water storage container 10 does not need to be externally mounted, thus occupying little installation space. Furthermore, both the first filter component and the water storage component are detachable, facilitating disassembly and assembly. By placing the water storage container 10 between the RO membrane filter element 6 and the water outlet 4, the filtered pure water is stored in the water storage container 10. When water is needed, the pure water in the water storage container 10 flows out from the water outlet 4 first for use. The water storage container 10 can provide sufficient water pressure to ensure the water output and flow rate during the water intake process. At the same time, the water purifier simultaneously produces water and continuously supplies water, ensuring water output stability, balancing efficient water output and convenient disassembly and assembly, and meeting user needs.

[0048] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A water purifier, characterized in that, include: The mounting bracket is provided with a water supply pipe, and the two ends of the water supply pipe are respectively a water inlet and a water outlet. The first filtration assembly includes a first mounting base and an RO membrane filter element. The first mounting base is disposed on the mounting bracket and communicates with the water supply pipeline. The RO membrane filter element is detachably connected to the first mounting base. A water storage assembly includes a third mounting base and a water storage container. The third mounting base is disposed on the mounting bracket and connected in series with the first mounting base through the water supply pipeline. The third mounting base is located between the first mounting base and the water outlet. The water storage container is detachably connected to the third mounting base.

2. The water purifier according to claim 1, characterized in that, It also includes a second filter assembly, which includes a second mounting base and a post-filter element. The second mounting base is disposed on the mounting bracket and connected in series with the first mounting base and the third mounting base through the water supply pipeline. The second mounting base is located between the first mounting base and the third mounting base, or between the third mounting base and the water outlet. The post-filter element is detachably connected to the second mounting base.

3. The water purifier according to claim 2, characterized in that, The first mounting base is provided with a first water inlet, a first water outlet and a second water outlet. Water in the water supply pipeline flows in from the first water inlet and is filtered through the RO membrane filter element. The filtered pure water flows from the first water outlet into the post-filter element for secondary filtration or mineralization treatment, or the filtered pure water enters the water storage container from the first water outlet for storage, and the concentrated water produced by filtration is discharged from the second water outlet.

4. The water purifier according to claim 3, characterized in that, It also includes a drainage pipe connected to the second outlet, and a first solenoid valve for controlling the opening and closing of the drainage pipe is provided on the drainage pipe. The concentrated water produced by filtration enters the drainage pipe from the second outlet and is discharged.

5. The water purifier according to claim 3, characterized in that, The third mounting base is provided with a second water inlet and a third water outlet. The pure water filtered by the first filter component flows into the post-filter cartridge for secondary filtration or mineralization. The pure water after secondary filtration or mineralization enters the water storage container from the second water inlet for storage. When water is needed, the pure water in the water storage container flows out from the third water outlet for use. Alternatively, the pure water filtered by the first filter component directly enters the water storage container from the second water inlet for storage. When water is needed, the pure water in the water storage container flows out from the third water outlet and flows into the post-filter cartridge for secondary filtration or mineralization. The pure water after secondary filtration or mineralization flows out for use.

6. The water purifier according to claim 5, characterized in that, The water storage container includes an outer shell, a top cover, and a water storage airbag. One end of the outer shell is a closed end, and the other end is an open end. The outer shell has a cavity inside to accommodate the water storage airbag. The top cover is used to close the open end of the outer shell. An end cap is provided at the bottom of the top cover, which covers the open end to seal the water storage airbag in the cavity. The top cover and the third mounting base are detachably connected by a snap-fit ​​structure. The outer shell is connected to the third mounting base through the top cover.

7. The water purifier according to claim 6, characterized in that, The top of the upper cover is provided with an inlet and outlet that communicate with the water storage cavity of the water storage airbag. The inlet and outlet are connected to the interior of the upper cover to form a cavity. The cavity is connected to the second inlet and the third outlet through the inlet and outlet. The end cover is provided with an inlet and outlet insertion rod. The two ends of the inlet and outlet insertion rod extend into the cavity and the water storage cavity of the water storage airbag, respectively, to connect the cavity and the water storage cavity of the water storage airbag. One end of the inlet and outlet insertion rod that extends into the cavity is fitted with an air nozzle. Pure water flows in from the second inlet, passes through the inlet and outlet and enters the cavity, and then enters the water storage cavity of the water storage airbag through the inlet and outlet insertion rod.

8. The water purifier according to claim 7, characterized in that, It also includes a third filtration assembly, which includes a detachably connected fourth mounting base and a pre-filter. The fourth mounting base is disposed on the mounting bracket and located between the first mounting base and the water inlet. The fourth mounting base is connected in series with the first mounting base, the second mounting base, and the third mounting base through the water supply pipeline. The pre-filter is used to perform preliminary filtration on the water input from the water inlet.

9. The water purifier according to claim 1, characterized in that, The water supply pipeline is also equipped with a booster pump and a pressure gauge. The booster pump is located between the first mounting base and the water inlet end, and the pressure gauge is located between the booster pump and the first mounting base. The pressure gauge is used to detect the pressure before the RO membrane filter element.

10. The water purifier according to claim 1, characterized in that, The water supply pipeline is also equipped with a check valve and a high-pressure switch. Both the check valve and the high-pressure switch are located at the front end of the third mounting base. A sterilizing lamp is installed near the water outlet of the water supply pipeline to disinfect and sterilize the filtered pure water before it is discharged.

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