Water drinking equipment

Abstract

The embodiment of the utility model provides drinking water equipment. The drinking water equipment comprises a raw water container; the pure water container is used for storing the filtered water; an inlet of the filtering assembly is communicated with an outlet of the raw water container through a first pipeline, a first outlet of the filtering assembly is communicated with an inlet of the pure water container through a second pipeline, and a second outlet of the filtering assembly is communicated with an inlet of the raw water container or an inlet of the waste water tank through a third pipeline; the booster pump is arranged on the first pipeline; the micro-pressure one-way valve is arranged on at least one of the first pipeline, the second pipeline and the third pipeline, when the booster pump stops working, the micro-pressure one-way valve can be opened under the pressure of water, and when the booster pump does not work, the micro-pressure one-way valve is automatically closed. The micro-pressure one-way valve is closed, so that communication between the raw water container and the pure water container can be blocked, and TDS increase caused by the fact that water slowly permeating into the filter assembly enters the pure water container is avoided.

Description

Technical Field

[0001] This utility model relates to a drinking water device. Background Technology

[0002] In current drinking water equipment, to improve drinking safety, a reverse osmosis filter is usually installed inside the machine. A booster pump pumps water from the raw water container to the reverse osmosis filter for filtration, and then pumps the filtered water to a pure water container for storage. However, since the maximum water level in the raw water container is usually higher than that in the pure water container, there is a difference in water level between the two. Furthermore, since reverse osmosis filters are typically hydrophilic, slow permeation can occur when the booster pump is not operating. This slow-permeating water enters the pure water container, leading to an increase in total dissolved solids (TDS) in the pure water container.

[0003] To address the reverse osmosis problem, three common methods are employed: First, the highest water level in the pure water container is designed to be greater than or equal to the highest water level in the raw water container, placing the pure water container in the upper part of the product. However, this increases the product's height, limiting its appearance. Second, a one-way valve is designed inside the reverse osmosis filter element. However, the adaptability of the one-way valve is limited, requiring different one-way valves to be designed for different filter elements. Third, the length of the pipeline from the reverse osmosis filter element to the raw water container is extended, resulting in a complex structure and a large space requirement. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a drinking water device that can solve the problem of increased total dissolved solids in pure water containers caused by the slow permeation of reverse osmosis filter cartridges.

[0005] One embodiment of this utility model provides a drinking water device, which includes: a raw water container; a pure water container for storing filtered water; a filter assembly, the inlet of which is connected to the outlet of the raw water container via a first pipeline, the first outlet of which is connected to the inlet of the pure water container via a second pipeline, and the second outlet of which is connected to the inlet of the raw water container or the inlet of a wastewater tank via a third pipeline; a booster pump installed on the first pipeline; and a micro-pressure check valve installed on at least one of the first, second, and third pipelines, wherein the micro-pressure check valve can open under water pressure when the booster pump is working, and automatically closes when the booster pump stops working.

[0006] The drinking water equipment provided in this embodiment activates a booster pump when water filtration is needed, allowing a micro-pressure check valve to open under water pressure to facilitate water flow. When water filtration is not needed, and the booster pump is not operating, the micro-pressure check valve automatically closes. It is assumed that the water pressure difference between the raw water container and the pure water container at their highest water levels will not open the micro-pressure check valve. Closing the micro-pressure check valve blocks the connection between the raw water container and the pure water container. With the micro-pressure check valve located on the first pipeline, its closure prevents water pressure from the height difference between the raw water container and the pure water container from rushing towards the filter assembly through the first pipeline. This significantly slows down the slow permeation of the filter assembly, even almost stopping it. Thus, even if the micro-pressure check valve does not block the connection between the filter assembly and the pure water container, it will not increase the water level or TDS in the pure water container. With the micro-pressure check valve installed on the second pipeline, the micro-pressure check valve can directly separate the pure water in the pure water container from the water in the filter assembly, ensuring that the water in the pure water container maintains a relatively low TDS.

[0007] Similarly, when the micro-pressure check valve is installed on the third pipeline, if the third pipeline is connected to the raw water container, the micro-pressure check valve can prevent the water pressure generated by the water level difference between the raw water container and the pure water container from rushing towards the filter element through the third pipeline. It can also prolong the slow permeation time of the filter element, or even prevent slow permeation from occurring, thereby keeping the water in the pure water container at a relatively low TDS. If the third pipeline is connected to the wastewater tank, the micro-pressure check valve can also prevent the water pressure generated by the water level difference between the wastewater tank and the pure water container from rushing towards the filter element through the third pipeline, which is also beneficial for keeping the water in the pure water container at a relatively low TDS.

[0008] Furthermore, in some embodiments, the filtration assembly includes a single reverse osmosis filter element or multiple reverse osmosis filter elements arranged in series, and a micro-pressure one-way valve is installed on the pipeline between the reverse osmosis filter element adjacent to the pure water container and the pure water container. This ensures that pure water generated by the slow permeation characteristics of the filtration assembly itself cannot enter the pure water container, ensuring that the TDS in the pure water container does not increase.

[0009] Furthermore, in some embodiments, the opening pressure of the micro-pressure check valve is greater than the water pressure generated by the height difference between the water levels in the raw water container and the pure water container at their highest levels. This ensures that the micro-pressure check valve will not be opened by water pressure after the booster pump stops working, preventing water from slowly permeating through the filter components from entering the pure water container and causing an increase in TDS.

[0010] Furthermore, in some embodiments, such as Figure 4As shown, the height difference h between the highest water level in the raw water container and the highest water level in the pure water container is less than or equal to 0.2m, and the opening pressure of the micro-pressure check valve is greater than or equal to 0.002MPa.

[0011] Since the height difference h between the highest water level in the raw water container and the highest water level in the pure water container in current countertop water purifiers and other water-drinking equipment is generally less than 0.2m, according to the liquid pressure formula p=ρgh, the water pressure at the bottom of a 0.2m water level difference is 0.00196MPa. Therefore, the positive opening force of the micro-pressure check valve, that is, its opening pressure is greater than or equal to 0.002MPa, can ensure that the micro-pressure check valve will not be opened by water pressure when the booster pump is not working, thereby preventing water generated by the slow permeation of the filter components from entering the pure water container.

[0012] Furthermore, in some embodiments, the micro-pressure check valve includes a valve body, a valve core, and an elastic element. The valve body has a water passage, and the interior of the water passage has a sealing part. The valve core is movably disposed within the water passage, and the elastic element is used to press the valve core against the sealing part. When the booster pump is operating, the valve core can be pushed away from the sealing part by the water flow to allow water to pass through the water passage. When the booster pump stops operating, the elastic element uses its own elasticity to press the valve core against the sealing part to block the water passage. Thus, the micro-pressure check valve employs a mechanical structure. When the booster pump stops operating, the elastic force of the elastic element automatically pushes the valve core back to its original position, thereby closing the water passage of the micro-pressure check valve and preventing water generated by the slow permeation of the filter assembly from entering the pure water container. Moreover, it has a simple structure, low cost, and reliable operation.

[0013] Furthermore, in some embodiments, the micro-pressure check valve includes a valve body and a valve core. The valve body has a vertically extending water passage, and the interior of the water passage has a sealing part. The valve core is movably disposed within the water passage and above the sealing part. When the booster pump is operating, the valve core can be pushed open by the water flow away from the sealing part to allow water to pass through the water passage. When the booster pump stops operating, the valve core can press against the sealing part by its own weight to block the water passage. Thus, the micro-pressure check valve employs a mechanical structure. When the booster pump stops operating, the weight of the valve core automatically resets, thereby closing the water passage of the micro-pressure check valve and preventing water generated by slow permeation of the filter assembly from entering the pure water container. Moreover, it has a simple structure, low cost, and reliable operation.

[0014] Furthermore, in some embodiments, the drinking water equipment also includes a wastewater solenoid valve, installed on the third pipeline. The wastewater solenoid valve can be normally open; during daily use, as the filter assembly filters out pure water, wastewater flows out through the third pipeline, ensuring that the filter assembly does not become clogged. During maintenance or cleaning, the wastewater solenoid valve can be closed to prevent further wastewater flow.

[0015] Furthermore, in some embodiments, the drinking water device further includes: a main body, with a water outlet on the outside of the main body; a raw water container, a filter assembly, a booster pump, and a micro-pressure check valve are all located inside the main body; and the outlet of the pure water container is connected to the water outlet via a fourth pipe. Thus, water can be directly dispensed from outside the main body through the water outlet, providing convenience for the user.

[0016] Furthermore, in some embodiments, the pure water container is located inside the machine body. This results in a more aesthetically pleasing drinking water device.

[0017] Furthermore, in some embodiments, a support platform is provided on the outside of the machine body, and the pure water container is detachably placed on the support platform. The support platform is provided with a water supply port connected to the second pipeline, and the bottom of the pure water container is provided with a water inlet. When the pure water container is removed from the support platform, the water inlet closes; when the pure water container is placed on the support platform, the water inlet and water supply port are connected and conductive. This allows users to easily pick up the pure water container and pour water directly, without any leakage from the bottom of the container.

[0018] Furthermore, in some embodiments, the drinking water device further includes a heating element, disposed on the fourth pipeline for heating the water flowing through the fourth pipeline, and disposed on one side of the pure water container for heating the water in the pure water container. In this way, the drinking water device also functions as a water heater, allowing users to directly drink heated pure water.

[0019] Other aspects and / or advantages of the present invention will be set forth in part in the description which follows, and in part will be clear from the description or may be learned by practice of the present invention. Attached Figure Description

[0020] The above and other objects and features of this utility model will become clearer from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 This invention provides a schematic diagram of the internal structure of a drinking device according to an embodiment of the present application when the main body is concealed.

[0022] Figure 2 It shows Figure 1 A magnified view of a portion of the diagram shown in section I;

[0023] Figure 3 A schematic diagram showing the water flow direction of a drinking water device according to an embodiment of this application is shown;

[0024] Figure 4 A schematic diagram showing the connection relationship of various components of a drinking water device according to an embodiment of this application is shown.

[0025] Figures 1 to 4 Explanation of icon numbers;

[0026] 100 Raw water container; 200 Pure water container; 300 Filter assembly; 400 Booster pump; 500 Micro-pressure check valve; 600 Wastewater solenoid valve; 700 Water outlet; 800 Heating element;

[0027] 910 First pipeline; 920 Second pipeline; 930 Third pipeline; 940 Fourth pipeline. Detailed Implementation

[0028] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but may be changed as will become clear upon understanding this disclosure, except for operations that must occur in a specific order. Furthermore, for clarity and conciseness, descriptions of features known in the art may be omitted.

[0029] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein, which will become clear upon understanding the disclosure of this application.

[0030] As used herein, the term “and / or” includes any one of the associated listed items and any combination of any two or more.

[0031] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts should not be limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Thus, without departing from the teaching of the examples described herein, the first component, first assembly, first region, first layer, or first part referred to as the first component, first assembly, first region, first layer, or first part may also be referred to as the second component, second assembly, second region, second layer, or second part.

[0032] In the specification, when an element such as a layer, region, or substrate is described as being "on" another element, "connected to," or "bonded to" another element, the element may be directly "on" another element, directly "connected to," or "bonded to" the other element, or one or more other elements may be present in between. Conversely, when an element is described as being "directly on" another element, "directly connected to," or "directly bonded to" another element, no other elements may be present in between.

[0033] The terminology used herein is for the purpose of describing various examples only and is not intended to limit disclosure. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well. The terms “comprising,” “including,” and “having” indicate the presence of the described features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The term “a plurality” represents any quantity of two or more.

[0034] The directional terms “above,” “below,” “top,” and “bottom” used in this application, unless otherwise specified, are based on the orientation of the product when it is in normal use.

[0035] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains after understanding the invention. Unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and in this invention, and shall not be interpreted in an idealized or overly formalistic manner.

[0036] The following will combine Figures 1 to 4 This invention introduces a drinking water device provided by an embodiment of the present invention. Figure 3 The direction indicated by the middle arrow represents the direction of water flow.

[0037] like Figures 1 to 4As shown, one embodiment of this utility model provides a drinking water device, which includes: a raw water container 100; a pure water container 200 for storing filtered water; a filter assembly 300, the inlet of which is connected to the outlet of the raw water container 100 via a first pipe 910, the first outlet of which is connected to the inlet of the pure water container 200 via a second pipe 920, and the second outlet of which is connected to the inlet of the raw water container 100 or the inlet of a wastewater tank (not shown in the figure) via a third pipe 930; a booster pump 400, which is installed on the first pipe 910; and a micro-pressure check valve 500, which is installed on at least one of the first pipe 910, the second pipe 920, and the third pipe 930. When the booster pump 400 is working, the micro-pressure check valve 500 can open under water pressure, and when the booster pump 400 stops working, the micro-pressure check valve 500 automatically closes.

[0038] The drinking water device provided in this embodiment operates the booster pump 400 when water filtration is required, allowing the micro-pressure check valve 500 to open under water pressure to facilitate water flow. When water filtration is not required, the micro-pressure check valve 500 automatically closes when the booster pump 400 is not operating. It is assumed that the water pressure generated by the height difference between the raw water container 100 and the pure water container 200 at their highest water levels will not open the micro-pressure check valve 500. The closing of the micro-pressure check valve 500 can block the connection between the raw water container 100 and the pure water container 200. When the micro-pressure check valve 500 is installed on the first pipeline 910, its closure prevents water pressure generated by the water level difference between the raw water container 100 and the pure water container 200 from rushing towards the filter element 300 through the first pipeline 910. This significantly slows down the slow permeation of the filter element 300, and may even almost stop it altogether. Thus, even if the micro-pressure check valve 500 does not completely block the connection between the filter element 300 and the pure water container 200, it will not increase the water level or TDS in the pure water container 200. When the micro-pressure check valve 500 is installed on the second pipeline 920, refer to... Figure 4 The micro-pressure check valve 500 can directly separate the pure water in the pure water container 200 from the water in the filter component 300, ensuring that the water in the pure water container 200 maintains a relatively low TDS.

[0039] Similarly, when the micro-pressure check valve 500 is installed on the third pipe 930, if the third pipe 930 is connected to the raw water container 100, the micro-pressure check valve 500 can prevent the water pressure generated by the water level difference between the raw water container 100 and the pure water container 200 from rushing towards the filter element 300 through the third pipe 930. It can also prolong the slow permeation time of the filter element 300, or even prevent the occurrence of slow permeation, thereby keeping the water in the pure water container 200 at a relatively low TDS. If the third pipe 930 is connected to the wastewater tank, the micro-pressure check valve 500 can also prevent the water pressure generated by the water level difference between the wastewater tank and the pure water container 200 from rushing towards the filter element 300 through the third pipe 930, which is also beneficial for keeping the water in the pure water container 200 at a relatively low TDS.

[0040] Among them, such as Figure 4 As shown, the number of micro-pressure check valves 500 can be one, preferably installed on the second pipeline 920. This allows the micro-pressure check valve 500 to directly block the connection between the filter assembly 300 and the pure water container 200. Regardless of the water pressure in the first pipeline 910 or the third pipeline 930, the water generated by the slow permeation of the filter assembly cannot enter the pure water container 200, ensuring that the water in the pure water container 200 maintains a relatively low TDS. Furthermore, this method involves fewer components, saving costs. Alternatively, the number of micro-pressure check valves 500 can be two, installed on the first pipeline 910 and the third pipeline 930 respectively, or the number of micro-pressure check valves 500 can be three, installed on the first pipeline 910, the second pipeline 920, and the third pipeline 930 respectively.

[0041] The design of the micro-pressure check valve 500 allows for flexible placement of the raw water container 100, wastewater tank, and pure water container 200 without considering the slow permeation issue of the filter assembly 300, thus ensuring the aesthetic appearance of the drinking water equipment. Furthermore, the micro-pressure check valve 500 is compact, occupies little space, and is highly versatile, making it suitable for various drinking water systems.

[0042] In addition, the micro-pressure check valve 500 can be mechanically and automatically closed when the booster pump 400 stops working, without the need to send an additional control signal to the micro-pressure check valve 500 to control its closure, which simplifies the control program and ensures product reliability.

[0043] The following combination Figure 3 and Figure 4 The working principle of the drinking water equipment in this embodiment is introduced.

[0044] During water production, after the raw water container 100 is filled with water, the booster pump 400 starts working. The raw water passes through the booster pump 400 and enters the filter assembly 300 through the first pipeline 910. Then it is divided into two paths. One path is pure water, which enters the pure water container 200 through the second pipeline 920 and the micro-pressure check valve 500. The other path is wastewater, which flows back to the raw water container 100 or the wastewater tank through the third pipeline 930.

[0045] When water is not being produced, if there is no micro-pressure check valve 500, due to the liquid level difference between the raw water container 100 and the pure water container 200, the pressure difference will cause the raw water to be filtered by the filter component 300, producing a small amount of pure water, which will slowly enter the pure water container 200 through the second pipeline 920, resulting in an increase in the liquid level and TDS of the pure water container 200.

[0046] When water is not being produced, if a low-pressure check valve 500 is installed on the second pipeline 920, such as Figure 4 As shown, the micro-pressure check valve 500 cannot be opened by the liquid level pressure difference alone. The pure water generated by the slow permeation characteristic of the filter component 300 itself cannot enter the pure water container 200, thus ensuring that the liquid level and TDS in the pure water container 200 remain unchanged.

[0047] Furthermore, in some embodiments, the filter assembly 300 includes a reverse osmosis filter element or multiple reverse osmosis filter elements arranged in series, and a micro-pressure one-way valve 500 is disposed on the pipeline between the reverse osmosis filter element adjacent to the pure water container 200 and the pure water container 200. This ensures that the pure water generated by the slow permeation characteristics of the filter assembly 300 itself cannot enter the pure water container 200, and ensures that the TDS in the pure water container 200 does not increase.

[0048] Furthermore, in some embodiments, the opening pressure of the micro-pressure check valve 500 is greater than the water pressure generated by the height difference between the water level in the raw water container 100 and the pure water container 200 at their highest water levels. This ensures that the micro-pressure check valve 500 will not be opened by water pressure after the booster pump 400 stops working, preventing water from the slow permeation of the filter assembly 300 from entering the pure water container 200 and causing an increase in TDS.

[0049] As an example, the height difference h between the highest water level of the raw water container 100 and the highest water level of the pure water container 200 is less than or equal to 0.2m, and the opening pressure of the micro-pressure check valve 500 is greater than or equal to 0.002MPa.

[0050] Since the height difference between the highest water level in the raw water container 100 and the highest water level in the pure water container 200 in current countertop water purifiers and other water-drinking equipment is generally less than 0.2m, the water pressure can be calculated using the liquid pressure formula p=ρgh. With a water level difference of 0.2m, the bottom water pressure is 0.00196MPa. Therefore, the positive opening force of the micro-pressure check valve 500, that is, its opening pressure is greater than or equal to 0.002MPa, can ensure that the micro-pressure check valve 500 will not be opened by the water pressure when the booster pump 400 is not working, thereby preventing the water generated by the slow permeation of the filter component 300 from entering the pure water container 200.

[0051] Regarding the specific structure of the micro-pressure check valve 500, in some embodiments, the micro-pressure check valve 500 includes a valve body (not shown in the figure), a valve core (not shown in the figure), and an elastic element (not shown in the figure). The valve body has a water passage, and the interior of the water passage has a sealing part (not shown in the figure). The valve core is movably disposed within the water passage, and the elastic element is used to press the valve core against the sealing part. When the booster pump 400 is working, the valve core can be pushed away from the sealing part by the water flow to guide the water through the water passage. When the booster pump 400 stops working, the elastic element uses its own elastic force to press the valve core against the sealing part to block the water passage. Thus, the micro-pressure check valve 500 adopts a mechanical structure. When the booster pump 400 stops working, the elastic force of the elastic element automatically pushes the valve core to reset, thereby closing the water passage of the micro-pressure check valve 500, preventing water generated by the slow permeation of the filter assembly 300 from entering the pure water container 200. Moreover, it has a simple structure, low cost, and reliable operation. In specific applications, the required opening pressure can be designed according to needs, and then the elastic force of the elastic element can be designed accordingly.

[0052] Alternatively, in some embodiments, the micro-pressure check valve 500 includes a valve body (not shown) and a valve core (not shown). The valve body has a vertically extending water passage, and the interior of the water passage has a sealing part (not shown). The valve core is movably disposed within the water passage and above the sealing part. When the booster pump 400 is operating, the valve core can be pushed open by the water flow away from the sealing part to allow water to pass through the water passage. When the booster pump 400 stops operating, the valve core can press against the sealing part by its own weight to block the water passage. Thus, the micro-pressure check valve 500 employs a mechanical structure. When the booster pump 400 stops operating, the weight of the valve core automatically resets, thereby closing the water passage of the micro-pressure check valve 500 and preventing water generated by the slow permeation of the filter assembly 300 from entering the pure water container 200. Moreover, it has a simple structure, low cost, and reliable operation. In specific applications, the required opening pressure can be designed according to needs, and thus the weight of the valve core can be designed accordingly.

[0053] The specific structure of the micro-pressure check valve 500 can vary, and will not be listed in detail here.

[0054] Furthermore, in some embodiments, such as Figure 4 As shown, the drinking water equipment also includes a wastewater solenoid valve 600, installed on the third pipeline 930. The wastewater solenoid valve 600 can be normally open. During daily use, as the filter assembly 300 filters out pure water, wastewater flows out through the third pipeline 930, ensuring that the filter assembly 300 does not become clogged. During maintenance or cleaning, the wastewater solenoid valve 600 can be closed to prevent further wastewater flow.

[0055] Furthermore, in some embodiments, such as Figure 1 and Figure 3 As shown, the drinking water equipment also includes: a main body (not shown in the figure), with a water outlet 700 installed on the outside of the main body. The raw water container 100, filter assembly 300, booster pump 400, and micro-pressure check valve 500 are all located inside the main body. The outlet of the pure water container 200 is connected to the water outlet 700 via a fourth pipe 940. Thus, water can be directly dispensed from outside the main body through the water outlet 700 for convenient drinking.

[0056] Furthermore, in some embodiments, the pure water container 200 is disposed inside the machine body. This results in a more aesthetically pleasing appearance for the drinking water device. Additionally, in this case, a switch cover can be provided on the drinking water device to facilitate the removal of the pure water container 200 from the machine body, thereby simplifying cleaning of the pure water container 200.

[0057] Furthermore, in some embodiments, such as Figure 1 and Figure 3 As shown, a support platform is provided on the outside of the machine body. The pure water container 200 is detachably placed on the support platform. A water supply port connected to the second pipeline 920 is provided on the support platform, and a water inlet is provided at the bottom of the pure water container 200. When the pure water container 200 is removed from the support platform, the water inlet closes. When the pure water container 200 is placed on the support platform, the water inlet and water supply port are connected and conductive. In this way, it is convenient for users to pick up the pure water container 200 and pour water directly, and the pure water container 200 will not leak.

[0058] As an example, the pure water container 200 is a kettle or water tank.

[0059] Furthermore, in some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the water dispenser also includes a heating element 800, which is installed on the fourth pipe 940 to heat the water flowing through the fourth pipe 940, and is installed on one side of the pure water container 200 to heat the water in the pure water container 200. In this way, the water dispenser also functions as a water heater, allowing users to directly drink heated pure water.

[0060] Furthermore, in some embodiments, the water drinking device is a water purifier or an electric kettle, etc.

[0061] While the embodiments of the present invention have been described in detail above, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope thereof. It should be understood that, to those skilled in the art, these modifications and variations will still fall within the spirit and scope of the embodiments of the present invention as defined in the claims.

Claims

1. A drinking water device, characterized in that, The drinking water equipment includes: Raw water container (100); Pure water container (200) for storing filtered water; The filter assembly (300) has its inlet connected to the outlet of the raw water container (100) via a first pipe (910), its first outlet connected to the inlet of the pure water container (200) via a second pipe (920), and its second outlet connected to the inlet of the raw water container (100) or the inlet of the wastewater tank via a third pipe (930). A booster pump (400) is installed on the first pipeline (910); A micro-pressure check valve (500) is installed on at least one of the first pipeline (910), the second pipeline (920) and the third pipeline (930). When the booster pump (400) is working, the micro-pressure check valve (500) can open under the pressure of water, and when the booster pump (400) stops working, the micro-pressure check valve (500) automatically closes.

2. The drinking water equipment according to claim 1, characterized in that, The filtration assembly (300) includes a reverse osmosis filter element or multiple reverse osmosis filter elements distributed in series, and the micro-pressure one-way valve (500) is disposed on the pipeline between the reverse osmosis filter element and the pure water container (200) adjacent to the pure water container (200).

3. The drinking water equipment according to claim 1, characterized in that, The opening pressure of the micro-pressure check valve (500) is greater than the water pressure generated by the height difference between the water in the raw water container (100) at its highest water level and the water in the pure water container (200) at its highest water level.

4. The drinking water equipment according to claim 1, characterized in that, The height difference between the highest water level of the raw water container (100) and the highest water level of the pure water container (200) is less than or equal to 0.2m, and the opening pressure of the micro-pressure check valve (500) is greater than or equal to 0.002MPa.

5. The drinking water equipment according to any one of claims 1 to 4, characterized in that, The micro-pressure check valve (500) includes a valve body, a valve core, and an elastic element. The valve body has a water passage, and the inside of the water passage has a sealing part. The valve core is movably disposed in the water passage, and the elastic element is used to press the valve core against the sealing part. When the booster pump (400) is working, the valve core can be pushed away from the sealing part by the water flow to open the water passage. When the booster pump (400) stops working, the elastic element presses the valve core against the sealing part by its own elastic force to block the water passage.

6. The drinking water equipment according to any one of claims 1 to 4, characterized in that, The micro-pressure check valve (500) includes a valve body and a valve core. The valve body has a vertically extending water passage, and the interior of the water passage has a sealing part. The valve core is movably disposed in the water passage and located above the sealing part. When the booster pump (400) is working, the valve core can be pushed away from the sealing part by the water flow to open the water passage. When the booster pump (400) stops working, the valve core can press against the sealing part by its own weight to block the water passage.

7. The drinking water equipment according to any one of claims 1 to 4, characterized in that, The drinking water equipment also includes: Wastewater solenoid valve (600) is installed on the third pipeline (930).

8. The drinking water equipment according to any one of claims 1 to 4, characterized in that, The drinking water equipment also includes: The machine body has a water outlet (700) on its outer side. The raw water container (100), the filter assembly (300), the booster pump (400) and the micro-pressure check valve (500) are all located inside the machine body. The outlet of the pure water container (200) is connected to the water outlet (700) through a fourth pipeline (940).

9. The drinking water equipment according to claim 8, characterized in that, The pure water container (200) is located inside the machine body; or A support platform is provided on the outside of the machine body. The pure water container (200) is detachably placed on the support platform. A water supply port connected to the second pipeline (920) is provided on the support platform. A water inlet is provided at the bottom of the pure water container (200). When the pure water container (200) is removed from the support platform, the water inlet is closed. When the pure water container (200) is placed on the support platform, the water inlet and the water supply port are connected and conductive to each other.

10. The drinking water equipment according to claim 8, characterized in that, The drinking water equipment also includes: A heating element (800) is disposed on the fourth pipe (940) for heating the water flowing through the fourth pipe (940), or disposed on one side of the pure water container (200) for heating the water in the pure water container (200).

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