Water tank assembly and water drinking equipment

Abstract

The utility model relates to a water tank assembly and water drinking equipment. The water tank assembly comprises a water tank body, a water taking pipe and a non-return piece. The water tank body has a water storage cavity; the water taking pipe is partially contained in the water storage cavity, the water inlet end of the water taking pipe extends to the cavity bottom of the water storage cavity, the water outlet end of the water taking pipe extends out of the water tank body, and a water pump is arranged on the water taking pipe so that water in the water storage cavity can be pumped out to the water outlet end of the water taking pipe through the water inlet end of the water taking pipe. The non-return piece is installed in the water taking pipe and located on the side, close to the water inlet end, of the water pump, and the non-return piece is used for limiting water flow in the water taking pipe to flow out through the water inlet end. The non-return piece is arranged in the water taking pipe and located on the side, close to the water inlet end, of the water pump, so that after the water pump stops working, the non-return piece can limit water flow in the water taking pipe to flow out through the water inlet end, the water flow in the water taking pipe can be prevented from flowing back into the water tank body under the action of gravity, and the situation that air exists in the water taking pipe is avoided; and the water taking efficiency and the user experience are improved.

Description

Technical Field

[0001] This application relates to the field of drinking water technology, and in particular to water tank components and drinking water equipment. Background Technology

[0002] Water dispensers have a built-in water tank to temporarily store a certain volume of purified water so that users have enough water to draw from when they need it. Common water dispensers on the market typically insert a water pipe directly into the water, and a pump pumps the water into the next component. However, after the pump stops working, the water in the pipe flows back into the tank under gravity, causing the pipe to fill with air. Therefore, in the next water draw, the air in the pipe needs to be purged before water is dispensed, reducing efficiency and resulting in a poor user experience. Utility Model Content

[0003] Therefore, it is necessary to provide a water tank component to address the common problem in the market where water dispensing typically involves directly inserting a water pipe into the water and using a pump to pump the water into the next component. However, after the pump stops working, the water in the pipe will flow back into the water tank under gravity, causing the pipe to fill with air. As a result, the air in the pipe needs to be purged before water is dispensed in the next water dispensing process, which reduces water dispensing efficiency and results in a poor user experience.

[0004] A water tank assembly, comprising:

[0005] The water tank body has a water storage chamber;

[0006] A water intake pipe, partially housed within the water storage cavity, with its inlet extending to the bottom of the cavity and its outlet extending beyond the water tank body. A water pump is mounted on the water intake pipe to pump water from the storage cavity through the inlet to the outlet.

[0007] A check valve is installed inside the water intake pipe and located on the side of the water pump near the water inlet. The check valve is used to restrict the flow of water in the water intake pipe from flowing out through the water inlet.

[0008] The aforementioned water tank assembly, by installing a check valve inside the water intake pipe, with the check valve located on the side of the water pump near the inlet, restricts the water flow from the water intake pipe out of the inlet after the water pump stops working. This prevents the water from flowing back into the water tank body under gravity, thus preventing the water intake pipe from becoming filled with air. As a result, it is not necessary to expel the air from the water intake pipe before adding water in the next water intake process, thereby improving water intake efficiency and user experience.

[0009] In one embodiment, the check valve includes a housing and a plug. The housing is connected to the inner wall of the water intake pipe. The housing has a water outlet channel communicating with the water storage chamber. The plug is disposed in the water outlet channel and is configured to move from a first position blocking the water outlet channel to a second position opening the water outlet channel under the force of the water pump.

[0010] In one embodiment, the backstop further includes an elastic element located between the housing and the plug, the elastic element being used to apply a thrust to the plug toward the first position.

[0011] In one embodiment, the sealing element includes a sealing block and a first sealing ring. The first sealing ring is sleeved on the sealing block and connected to the sealing block. When the sealing element is in the first position, the first sealing ring elastically abuts against the inner wall of the housing throughout its entire circumference to block the water outlet channel.

[0012] In one embodiment, the housing has a circumferentially arranged abutment surface for abutting against the first sealing ring, and the distance between the abutment surface and the axis of the water intake pipe gradually decreases in the direction from the second position to the first position.

[0013] In one embodiment, the housing is provided with a guide hole, and the sealing member has a guide rod protruding from the side facing the water outlet. The guide rod is inserted into the guide hole and slidably connected to the hole wall of the guide hole to guide the movement of the sealing member between the first position and the second position.

[0014] In one embodiment, the check valve is located at the bottom of the water storage chamber.

[0015] In one embodiment, a gap exists between the end face of the water intake pipe near the water inlet and the bottom wall of the water tank body to form a water inlet.

[0016] In one embodiment, the entire circumferential end face of the water intake pipe near the water inlet end has a gap with the bottom wall of the water tank body. A baffle is provided on the bottom wall of the water tank body, and the baffle is disposed on one side of the water intake pipe. The baffle is used to abut against the water intake pipe to limit the deflection of the water intake pipe relative to the bottom wall of the water tank body.

[0017] In one embodiment, the bottom wall of the water tank body has a groove that is recessed downward relative to the bottom wall of the water tank body, and the groove is located below the water inlet of the water intake pipe.

[0018] In one embodiment, the bottom wall of the groove has a drain hole communicating with the water storage chamber, the drain hole being spaced apart from the water intake pipe, and the water tank assembly further includes a valve cover, the valve cover being detachably connected to the water tank body, the valve cover being used to block the drain hole.

[0019] In one embodiment, the groove has first sidewalls disposed opposite each other in a direction perpendicular to the arrangement direction of the inlet and the outlet, and the distance between the two first sidewalls gradually decreases in the arrangement direction of the inlet and the outlet.

[0020] This application also provides a drinking water device that can solve at least one of the above-mentioned technical problems.

[0021] A drinking water device includes the water tank assembly described above. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a water tank assembly provided in an embodiment of this application, showing the separation of the tank body and the cover.

[0023] Figure 2 This is a schematic diagram of the internal cross-section of the water intake pipe in a water tank assembly provided in an embodiment of this application.

[0024] Figure 3 This is a cross-sectional schematic diagram of a check valve in a water tank assembly provided in an embodiment of this application.

[0025] Figure 4 This is a partial exploded view of the backstop component in a water tank assembly provided in an embodiment of this application.

[0026] Figure 5 This is a schematic diagram of the water intake pipe in a water tank assembly provided in an embodiment of this application.

[0027] Figure 6 This is a top view of the tank body in a water tank assembly provided in an embodiment of this application.

[0028] Icon labels:

[0029] 100-Water tank body; 110-Water storage cavity; 120-Baffle; 130-Groove; 131-First side wall; 133-Arc-shaped wall; 134-Drain hole; 140-Tank body; 150-Lid; 200-Water intake pipe; 210-Water inlet; 220-Water outlet; 230-Water inlet; 240-Notch; 300-Check valve; 310-Shell shell; 320-Inner shell; 321-Guide hole; 322-Protrusion; 323-Snap protrusion; 324-Stop; 330-Outer shell; 331-Abutting surface; 332-Second mounting groove; 333-Water outlet channel; 334-Snap groove; 335-Matching groove; 340-Blocking component; 341-Blocking block; 342-First sealing ring; 343-Guide rod; 344-First mounting groove; 345-Boss; 350-Elastic component; 360-Second sealing ring. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a water tank assembly provided in an embodiment of this application, showing the separation of the tank body and the cover. Figure 2This is a schematic diagram of the internal cross-section of the water intake pipe in a water tank assembly provided in an embodiment of this application. The water tank assembly provided in an embodiment of this application includes a water tank body 100, a water intake pipe 200, and a check valve 300. The water tank body 100 has a water storage chamber 110. The water intake pipe 200 is partially housed in the water storage chamber 110, with its inlet end 210 extending to the bottom of the water storage chamber 110 and its outlet end 220 extending beyond the water tank body 100. A water pump is provided on the water intake pipe 200 to pump water from the water storage chamber 110 through the inlet end 210 to the outlet end 220. The check valve 300 is installed inside the water intake pipe 200 and is located on the side of the water pump near the inlet end 210. The check valve 300 is used to restrict the flow of water from the water intake pipe 200 through the inlet end 210.

[0037] Specifically, in this application, a check valve 300 is installed inside the water intake pipe 200, and the check valve 300 is located on the side of the water pump near the inlet end 210. After the water pump stops working, the check valve 300 can restrict the water flow in the water intake pipe 200 from flowing out through the inlet end 210, thereby preventing the water flow in the water intake pipe 200 from flowing back into the water tank body 100 under the action of gravity. This prevents air from being present in the water intake pipe 200, so that the air in the water intake pipe 200 does not need to be purged before water is added in the next water intake process. This improves the water intake efficiency and user experience, and can also effectively prevent water hammer effect from damaging the pipes and water pump in the water tank assembly.

[0038] Furthermore, the water tank body 100 also includes a detachably connected tank body 140 and a cover 150. When the cover 150 is connected to the tank body 140, it encloses a water storage cavity 110.

[0039] See Figure 2 and Figure 3 , Figure 3 This is a cross-sectional schematic diagram of a check valve in a water tank assembly provided in one embodiment of this application. In one embodiment, the check valve 300 includes a housing 310 and a sealing member 340. The housing 310 is connected to the inner wall of the water intake pipe 200. The housing 310 has a water outlet channel 333 communicating with the water storage chamber 110. The sealing member 340 is disposed in the water outlet channel 333, and the sealing member 340 is configured to move from a first position blocking the water outlet channel 333 to a second position opening the water outlet channel 333 under the action of the water pump.

[0040] Specifically, the second position is located above the first position. When the sealing member 340 is in the first position, it can block the water outlet channel 333, thus blocking the connection between the water inlet pipe and the water storage chamber 110. When the sealing member 340 is in the second position, the water outlet channel 333 is open, thus connecting the water inlet pipe and the water storage chamber 110. When the water pump operates to generate suction, the sealing member 340 moves upward from the first position to the second position under the action of the water pump, thereby opening the water outlet channel 333 for water intake.

[0041] See Figure 2 and Figure 3 In one embodiment, the backstop 300 further includes an elastic element 350 located between the housing 310 and the sealing element 340. The elastic element 350 applies a thrust toward the sealing element 340 to a first position, so that after the water pump stops working, the sealing element 340 moves stably from the second position to the first position under the thrust of the elastic element 350, and remains stably in the first position, thereby stably restricting the backflow of water in the water intake pipe 200 through the water inlet 210. Preferably, the elastic element 350 is a spring.

[0042] See Figure 2 and Figure 3 In one embodiment, the sealing member 340 includes a sealing block 341 and a first sealing ring 342. The first sealing ring 342 is sleeved on the sealing block 341 and connected to the sealing block 341. When the sealing member 340 is in the first position, the first sealing ring 342 elastically abuts against the inner wall of the housing 310 around the entire circumference to block the water outlet channel 333.

[0043] Specifically, the first sealing ring 342 can deform. After the water pump stops working, the sealing member 340 moves to the first position under the action of the elastic member 350, and abuts against the inner wall of the housing 310 through the full circumference of the first sealing ring 342, thereby stabilizing the gap between the sealing member 340 and the housing 310, so as to improve the sealing performance of the water outlet channel 333 and prevent the water in the water intake pipe 200 from flowing back into the water tank body 100 under the action of gravity.

[0044] See Figure 2 , Figure 3 and Figure 4 , Figure 4 This is a partial exploded view of the backstop component in a water tank assembly provided in one embodiment of this application. In one embodiment, the housing 310 has a circumferentially arranged abutment surface 331, which abuts against a first sealing ring 342, and the distance between the abutment surface 331 and the axis of the water intake pipe 200 gradually decreases in the direction from the second position to the first position.

[0045] Specifically, the contact surface 331 is an inclined surface. When the first sealing ring 342 abuts against the contact surface 331, under the thrust of the elastic element 350, the first sealing ring 342 is subjected to increasing compressive force, which makes the deformation of the first sealing ring 342 more and more, thereby making the sealing effect better.

[0046] The first sealing ring 342 has a circular cross-sectional area in its radial direction, so that when the first sealing ring 342 comes into contact with the abutting surface 331 and deforms, a portion of the first sealing ring 342 can fit into the abutting surface 331, thereby ensuring the sealing effect.

[0047] Furthermore, the sidewall of the sealing block 341 has a first mounting groove 344, the first sealing ring 342 is mounted in the first mounting groove 344 and partially extends out of the first mounting groove 344, and the inner contour of the first mounting groove 344 is adapted to the outer contour of the first sealing ring 342.

[0048] See Figure 2 , Figure 3 and Figure 4 In one embodiment, the housing 310 is provided with a guide hole 321, and the sealing member 340 is provided with a guide rod 343 protruding on the side facing the second position. The guide rod 343 is inserted into the guide hole 321 and is slidably connected to the hole wall of the guide hole 321 to guide the movement of the sealing member 340 between the first position and the second position.

[0049] Specifically, the guide rod 343 is connected to the side of the sealing block 341 facing the second position. The guide rod 343 is inserted into the guide hole 321, which allows the sealing member 340 to move accurately towards the second position under the force of the water pump and accurately towards the first position under the force of the elastic member 350, thereby improving the reliability of the water tank assembly. The guide rod 343 passes through the elastic member 350.

[0050] Furthermore, the sealing block 341 is provided with a boss 345, which is arranged around the circumference of the water intake pipe 200 and is located on the outside of the elastic member 350 to limit the elastic member 350 from shifting relative to the sealing block 341, so that the elastic member 350 applies a stable thrust toward the sealing member 340 toward the second position.

[0051] See Figure 2 , Figure 3 and Figure 4In one embodiment, the housing 310 includes an inner shell 320 and an outer shell 330. The outer shell 330 is connected to the inner wall of the water intake pipe 200, and an abutment surface 331 is disposed on the outer shell 330. The inner shell 320 is inserted into the outer shell 330 and snapped into it. One end of the elastic member 350 away from the sealing block 341 is connected to the inner shell 320, and a guide hole 321 is disposed on the inner shell 320. The separate arrangement of the inner shell 320 and the outer shell 330 facilitates the installation of the sealing member 340 and the elastic member 350, thereby improving assembly efficiency. The inner shell 320 also has an annular protrusion 322 on one side of the first position, and the elastic member 350 is sleeved on the protrusion 322 for guidance.

[0052] Furthermore, the outer wall of the inner shell 320 has a locking protrusion 323, and the inner wall of the outer shell 330 has a locking groove 334. The locking protrusion 323 and the locking groove 334 engage with each other, thereby connecting the inner shell 320 and the outer shell 330. The locking groove 334 is located at the end of the outer shell 330 away from the abutment surface 331, facilitating deformation so that the locking protrusion 323 extends into the locking groove 334 and abuts against the groove wall, thus preventing the inner shell 320 from dislodging from the outer shell 330. Both the locking protrusion 323 and the locking groove 334 are arranged circumferentially around the water intake pipe 200.

[0053] Furthermore, the inner shell 320 is also provided with a stop 324, which abuts against the end face of the outer shell 330. Preferably, the stop 324 is arranged around the circumference of the guide rod 343.

[0054] The inner side of the outer shell 330 is also provided with a mating groove 335, and the end of the inner shell 320 away from the stop block 324 is inserted into the mating groove 335 to improve the stability of the connection between the inner shell 320 and the outer shell 330. Preferably, the mating groove 335 is arranged around the circumference of the water intake pipe 200.

[0055] See Figure 2 , Figure 3 and Figure 4 In one embodiment, the backstop 300 further includes a second sealing ring 360, which is sleeved on and connected to the outer shell 330. The second sealing ring 360 abuts against the inner wall of the water intake pipe 200 to seal the gap between the inner wall of the water intake pipe 200 and the outer wall of the outer shell 330, thereby preventing water from flowing through the gap between the inner wall of the water intake pipe 200 and the outer wall of the outer shell 330, thus ensuring the reliability of the backstop 300 in restricting the backflow of water in the water intake pipe 200 into the water tank body 100.

[0056] Furthermore, the outer wall of the housing 330 is provided with a second mounting groove 332, and the second sealing ring 360 is mounted in the second mounting groove 332 and partially extends out of the second mounting groove 332. The inner contour of the second mounting groove 332 is adapted to the outer contour of the second sealing ring 360. The cross-sectional area of ​​the second sealing ring 360 in its radial direction is circular.

[0057] See Figure 1 and Figure 2 In one embodiment, the backstop 300 is located at the bottom of the water storage chamber 110, thereby shortening the distance between the first position and the water inlet 210 of the water intake pipe 200, thereby reducing the gravity of the water between the first position and the water inlet 210 of the water intake pipe 200, thereby reducing the possibility of the water between the first position and the water inlet 210 of the water intake pipe 200 flowing back to the water tank body 100 when the sealing member 340 is in the first position.

[0058] See Figure 1 , Figure 2 and Figure 5 , Figure 5 This is a schematic diagram of the structure of the water intake pipe 200 in a water tank assembly provided in one embodiment of this application. In one embodiment, there is a gap between the end face of the water intake pipe 200 near the water inlet 210 and the bottom wall of the water tank body 100 to form a water inlet 230. This allows the water level in the water tank body 100 to drop to the bottom of the water storage chamber 110, while the water in the water storage chamber 110 can still enter the water intake pipe 200 under the action of the water pump and be pumped out of the water tank body 100, thereby improving the utilization rate of the water in the water tank body 100.

[0059] Furthermore, the water intake pipe 200 has a notch 240 on the side of its wall near the inlet end 210, which increases the size of the inlet 230 in the direction of gravity and improves the water intake efficiency. The notch 240 is at least two in number and is evenly spaced around the circumference of the water intake pipe 200. Preferably, the notch 240 is three.

[0060] See Figure 1 , Figure 2 , Figure 5 and Figure 6 , Figure 6 This is a top view of the tank body in a water tank assembly provided in one embodiment of this application. In one embodiment, the entire circumferential end face of the water intake pipe 200 near the water inlet end 210 has a gap with the bottom wall of the water tank body 100. A baffle 120 is provided on the bottom wall of the water tank body 100. The baffle 120 is disposed on one side of the water intake pipe 200 and is used to abut against the water intake pipe 200 to limit the deflection of the water intake pipe 200 relative to the bottom wall of the water tank body 100.

[0061] Specifically, the lower end of the water intake pipe 200 is suspended, and the baffle 120 prevents the water tank assembly from tilting during transportation, installation and use, thus improving the reliability of the water tank assembly.

[0062] Furthermore, there are at least three baffles 120, which are evenly spaced around the circumference of the water intake pipe 200 to stably limit the side of the water intake pipe 200 near the water inlet end 210, and to facilitate the passage of water through the gaps between adjacent baffles 120. Preferably, the baffles 120 are arc-shaped and adapted to the outer contour of the water intake pipe 200.

[0063] See Figure 1 , Figure 2 , Figure 5 and Figure 6 In one embodiment, the bottom wall of the water tank body 100 has a groove 130, which is recessed downward relative to the bottom wall of the water tank body 100. The groove 130 is located below the water inlet 230 of the water intake pipe 200. When there is insufficient clean water in the water tank body 100, clean water will flow to the groove 130 and be sucked up by the water intake pipe 200, thereby facilitating the discharge of water from the water storage chamber 110 and improving the utilization rate of water in the water tank body 100.

[0064] See Figure 1 , Figure 2 , Figure 5 and Figure 6 In one embodiment, the bottom wall of the groove 130 has a drain hole 134 communicating with the water storage chamber 110. The drain hole 134 is spaced apart from the water intake pipe 200. The water tank assembly also includes a valve cover, which is detachably connected to the water tank body 100 and is used to block the drain hole 134.

[0065] Specifically, when it is necessary to replace the clean water in the water tank body 100, the valve cover can be removed relative to the water tank body 100, so that the clean water in the water storage chamber 110 can be discharged through the drain hole 134.

[0066] See Figure 1 , Figure 2 , Figure 5 and Figure 6 In one embodiment, in a direction perpendicular to the arrangement direction of the inlet 230 and the drain hole 134, the groove 130 has a first sidewall 131 disposed opposite to each other. In the arrangement direction of the inlet 230 and the drain hole 134, the distance between the two first sidewalls 131 gradually decreases, and the height of the bottom wall of the groove 130 gradually decreases, thereby forming a converging shape, which facilitates the water in the groove 130 to flow out toward the drain hole 134.

[0067] Furthermore, the ends of the two first sidewalls 131 away from the water intake pipe 200 are connected to the wall of the drain hole 134, thereby facilitating the flow of water in the groove 130 towards the drain hole 134. The groove 130 also includes an arc-shaped wall 133, which is connected to the ends of the two first sidewalls 131 away from the drain hole 134 and conforms to the contour of the drain hole 134. In the direction of gravity, the arc-shaped wall 133 is located outside the outer wall of the water intake pipe 200.

[0068] See Figure 1 , Figure 2 , Figure 3 and Figure 6 This application also provides a drinking water device, including the aforementioned water tank assembly. By providing a check valve 300 inside the water intake pipe 200, and with the check valve 300 located on the side of the water pump near the inlet end 210, the check valve 300 can restrict the water flow in the water intake pipe 200 from flowing out through the inlet end 210 after the water pump stops working. This prevents the water in the water intake pipe 200 from flowing back into the water tank body 100 under the action of gravity, thus preventing the water intake pipe 200 from becoming filled with air. This means that during the next water intake process, it is not necessary to expel the air from the water intake pipe 200 before water is added, thereby improving the water intake efficiency and user experience of the drinking water device.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A water tank assembly, characterized in that, The water tank assembly includes: The water tank body has a water storage chamber; A water intake pipe, partially housed within the water storage cavity, with its inlet extending to the bottom of the cavity and its outlet extending beyond the water tank body. A water pump is mounted on the water intake pipe to pump water from the storage cavity through the inlet to the outlet. A check valve is installed inside the water intake pipe and located on the side of the water pump near the water inlet. The check valve is used to restrict the flow of water in the water intake pipe from flowing out through the water inlet.

2. The water tank assembly according to claim 1, characterized in that, The check valve includes a housing and a plug. The housing is connected to the inner wall of the water intake pipe. The housing has a water outlet channel communicating with the water storage chamber. The plug is disposed in the water outlet channel and is configured to move from a first position blocking the water outlet channel to a second position opening the water outlet channel under the force of the water pump.

3. The water tank assembly according to claim 2, characterized in that, The backstop also includes an elastic element located between the housing and the sealing element, the elastic element being used to apply a thrust toward the sealing element towards the first position.

4. The water tank assembly according to claim 2, characterized in that, The sealing component includes a sealing block and a first sealing ring. The first sealing ring is sleeved on the sealing block and connected to the sealing block. When the sealing component is in the first position, the first sealing ring elastically abuts against the inner wall of the housing throughout its entire circumference to block the water outlet channel.

5. The water tank assembly according to claim 4, characterized in that, The housing has a circumferentially arranged abutment surface, which is used to abut against the first sealing ring, and the distance between the abutment surface and the axis of the water intake pipe gradually decreases in the direction from the second position to the first position.

6. The water tank assembly according to claim 2, characterized in that, The housing is provided with a guide hole, and the sealing member has a guide rod protruding from the side facing the second position. The guide rod is inserted into the guide hole and slidably connected to the hole wall of the guide hole to guide the movement of the sealing member between the first position and the second position.

7. The water tank assembly according to any one of claims 1-6, characterized in that, The check valve is located at the bottom of the water storage chamber.

8. The water tank assembly according to any one of claims 1-6, characterized in that, The end face of the water intake pipe near the water inlet has a gap with the bottom wall of the water tank body to form a water inlet.

9. The water tank assembly according to claim 8, characterized in that, The entire circumference of the water intake pipe near the water inlet end has a gap with the bottom wall of the water tank body. A baffle is provided on the bottom wall of the water tank body. The baffle is located on one side of the water intake pipe and is used to abut against the water intake pipe to limit the deflection of the water intake pipe relative to the bottom wall of the water tank body.

10. The water tank assembly according to claim 8, characterized in that, The bottom wall of the water tank body has a groove, which is recessed downward relative to the bottom wall of the water tank body, and the groove is located below the water inlet of the water intake pipe.

11. The water tank assembly according to claim 10, characterized in that, The bottom wall of the groove has a drain hole that communicates with the water storage chamber. The drain hole is spaced apart from the water intake pipe. The water tank assembly also includes a valve cover, which is detachably connected to the water tank body and is used to block the drain hole.

12. The water tank assembly according to claim 11, characterized in that, In a direction perpendicular to the arrangement direction of the inlet and the outlet, the groove has two opposing first sidewalls. In the arrangement direction of the inlet and the outlet, the distance between the two first sidewalls gradually decreases, and the height of the bottom wall of the groove gradually decreases.

13. A drinking water device, characterized in that, Includes the water tank assembly as described in any one of claims 1-12.

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