Water dispenser with good sealing performance

Abstract

The utility model discloses a water dispenser with good sealing performance, which is characterized in that a bracket is arranged at an opening at the upper part of an outer shell and is firmly connected by virtue of a screw, and clamping grooves and limiting grooves which are distributed at intervals are arranged along the outer side of an installation wall formed by upwards extending the inner wall of the bracket, so that accurate positioning and supporting are provided for the installation of a main cover body and a protective cover body. The clamping blocks on the inner wall of the protective cover body are connected with the clamping grooves in the support in a clamped mode, a first stable and sealed barrier is formed, and invasion of external dust and impurities is effectively prevented. Meanwhile, the sealing tank body is fixed in the outer shell, the main cover body at the opening of the sealing tank body is tightly connected with the through hole in the center of the protective cover body through threads, and the sealing performance of the whole structure is further enhanced. The limiting frame provides an additional supporting point for the main cover body, the stability of the sealing tank body in the installation and use process is guaranteed, the sealing tank body is prevented from loosening or displacing, and healthier and more reliable drinking water experience is brought to a user.

Description

A water dispenser with good sealing performance Technical Field

[0001] This utility model relates to the field of water dispenser equipment technology, and in particular to a water dispenser with good sealing performance. Background Technology

[0002] Traditional water dispensers often employ a split-type design, with their sealing components typically consisting of a simple fit between an outer cover and a sealing ring. This design suffers from several technical drawbacks: First, the outer cover and body rely solely on a single-stage locking mechanism using threads or snap-fits, which can easily lead to seal failure under frequent opening and closing or transportation vibrations, resulting in leakage from the internal water tank or the intrusion of external contaminants. Second, the lack of positioning constraints between the sealed tank and the supporting structure can easily cause assembly gaps due to stress deformation after prolonged use. Third, the simple connection structure between the protective cover and the body fails to provide multi-stage limiting, posing a risk of secondary contamination due to accidental opening of the cover. While existing technologies employ a double-layer protective cover design, the snap-fit ​​structure has fitting gaps and lacks an anti-rotation limiting mechanism. Furthermore, the threaded locking sealing device is prone to loosening due to thermal expansion and contraction of the plastic parts under high temperatures. Therefore, there is an urgent need for a water dispenser sealing structure that offers multiple sealing guarantees, structural stability, and ease of maintenance to address these technical problems. Clearly, existing technologies require further improvement and enhancement. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a water dispenser with good sealing performance to solve the problem of poor sealing performance in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a water dispenser with good sealing performance, comprising: an outer shell, wherein a bracket is fixed to the upper opening of the outer shell by screws, the inner wall of the bracket extends upward to form a mounting wall edge, and the mounting wall edge is provided with spaced slots and limiting grooves; a protective cover, provided with a locking block that engages with the slots; a sealing tank fixed inside the outer shell, wherein the protective cover has a through hole in the center, and a main cover threaded to the opening of the sealing tank is provided at the through hole; and a limiting frame clamped between the bracket and the sealing tank, wherein the side wall of the limiting frame is provided with a circumferential protrusion that engages with the limiting groove.

[0005] In one embodiment of the present invention, the main cover is provided with a pressurizing hand pump and a pressure relief valve. The pressurizing hand pump includes a pressurizing cylinder with a one-way valve. The bottom outlet of the pressurizing cylinder is snapped with a bottom cover. The bottom cover is provided with an air guide channel and is connected to the bottom end of the air guide pipe through the air guide channel.

[0006] In one embodiment of the present invention, the top end of the gas guide tube extends above the liquid surface inside the sealed tank, and the tube body of the gas guide tube is fixed by a clamp on the outer wall of the piston.

[0007] In one embodiment of the present invention, the bottom cavity of the pressure cylinder is provided with a stepped valve seat, and a one-way valve is press-fitted into the valve seat by interference fit. The bottom of the valve seat is provided with an air outlet.

[0008] In one embodiment of the present invention, the edge of the bottom cover is provided with an L-shaped locking seat, and the bottom of the pressure cylinder is provided with a T-shaped locking claw. The L-shaped locking seat and the T-shaped locking claw are rotatably engaged.

[0009] In one embodiment of the present invention, the pressure relief valve includes a cylindrical valve body and a stepped valve core; the bottom of the cylindrical valve body is provided with an air inlet communicating with the sealed tank, and the top is provided with an adjusting screw hole; the stepped valve core is slidably disposed in the valve body.

[0010] In one embodiment of this utility model, the bottom of the sealed tank is connected to a water distribution pipe, the water distribution pipe is connected to a filter element, and the water outlet of the filter element is connected to the drinking water outlet of the water dispenser through a water collection pipe.

[0011] In one embodiment of the present invention, the side wall of the outer shell is provided with an insertion interface for installing a filter element, and the insertion interface is provided with a detachable cover plate.

[0012] In one embodiment of this utility model, the groove depth of the mounting wall edge is 1 / 3 to 1 / 2 of the wall edge thickness, and a sealing strip is provided at the bottom of the groove.

[0013] In one embodiment of this utility model, the threaded connection between the main cover and the sealed tank is provided with a sealing structure.

[0014] As described above, the water dispenser with excellent sealing performance of this utility model has the following beneficial effects: The bracket is installed at the opening on the upper part of the outer shell and is securely connected by screws. The mounting wall formed by its inner wall extending upwards has spaced grooves and limiting grooves along its outer side, providing precise positioning and support for the installation of the main cover and the protective cover. The locking blocks on the inner wall of the protective cover engage with the grooves on the bracket, forming a first stable and sealed barrier, effectively preventing the intrusion of external dust and impurities. At the same time, the sealed tank is fixed inside the outer shell, and the main cover at its opening is tightly connected to the through hole in the center of the protective cover by threads, further enhancing the overall sealing performance. The limiting bracket is clamped between the bracket and the sealed tank, and the circumferential protrusions on its side wall accurately fit with the limiting grooves, not only providing additional support points for the main cover but also ensuring the stability of the sealed tank during installation and use, preventing it from loosening or shifting. This design allows the various components to cooperate and restrain each other, together forming a water dispenser with excellent sealing performance. Whether it's slight vibrations during daily use or various environmental changes during long-term use, it can maintain excellent sealing performance, effectively ensuring the safety and hygiene of drinking water and bringing users a healthier and more reliable drinking water experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a structural schematic diagram of the water dispenser with good sealing performance provided by this utility model;

[0017] Figure 2 is a front view of the water dispenser with good sealing performance provided by this utility model;

[0018] Figure 3 is a cross-sectional view along AA in Figure 2;

[0019] Figure 4 is a rear view of the water dispenser with good sealing performance provided by this utility model;

[0020] Figure 5 is a partial structural schematic diagram of the water dispenser with good sealing performance provided by this utility model;

[0021] Figure 6 is a schematic diagram of the support structure of the water dispenser with good sealing performance provided by this utility model;

[0022] Figure 7 is a schematic diagram of the pressurizing hand pump structure of the water dispenser with good sealing performance provided by this utility model;

[0023] Figure 8 is a cross-sectional view along BB in Figure 7;

[0024] Figure 9 is a schematic diagram of the pressure relief valve structure of the water dispenser with good sealing performance provided by this utility model;

[0025] Figure 10 is a cross-sectional view of the pressure relief valve of the water dispenser with good sealing performance provided by this utility model.

[0026] Component designation explanation

[0027] 1. Outer shell; 11. Insertion interface; 2. Bracket; 21. Mounting edge; 22. Slot; 23. Limiting slot; 3. Protective cover; 31. Locking block; 4. Sealed tank; 41. Water distribution pipe; 42. Filter element; 5. Main cover; 6. Limiting bracket; 61. Protrusion; 7. Pressurizing hand pump; 71. One-way valve; 72. Pressurizing cylinder; 8. Pressure relief valve; 81. Cylindrical valve body; 82. Stepped valve core; 9. Bottom cover; 10. Air guide pipe. Detailed Implementation

[0028] This utility model provides a water dispenser with good sealing performance. To make the purpose, technical solution and effect of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments.

[0029] In the description of this utility model, it should be understood that the terms "up, down, left, right," etc., 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 utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation," "connection," etc. should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Please refer to Figures 1 to 10. This utility model provides a water dispenser with good sealing performance, including: an outer shell 1, a bracket 2 fixed to the upper opening of the outer shell 1 by screws, the inner wall of the bracket 2 extending upward to form a mounting wall edge 21, the mounting wall edge 21 having spaced-apart slots 22 and limiting slots 23; a protective cover 3, having a locking block 31 that engages with the slots 22; a sealing tank 4 fixed inside the outer shell 1, the protective cover 3 having a through hole in the center, and a main cover 5 threadedly connected to the opening of the sealing tank 4 at the through hole; and a limiting frame 6 clamped between the bracket 2 and the sealing tank 4, the side wall of the limiting frame 6 having a circumferential protrusion 61 that engages with the limiting slots 23.

[0031] The bracket 2's slot 22 and the protective cover 3's block 31 form a radial lock, which, combined with the axial pressing of the main cover 5's threaded connection, constructs a double sealing structure; the circumferential protrusion 61 of the limiting bracket 6 engages with the limiting groove 23 to suppress the rotation and displacement of the sealed tank 4, and reduce the assembly gap through multi-directional constraints to improve the overall impact and vibration resistance.

[0032] The main cover 5 is equipped with a pressurizing hand pump 7 and a pressure relief valve 8. The pressurizing hand pump 7 includes a pressurizing cylinder 72 with a one-way valve 71. The bottom outlet of the pressurizing cylinder 72 is snapped onto a bottom cover 9. The bottom cover 9 has an air guide channel and is connected to the bottom end of the air guide pipe 10 through the air guide channel. The pressurizing hand pump 7 injects air into the sealed tank 4 through the one-way valve 71 to increase the water output power. The pressure relief valve 8 can actively regulate the pressure inside the tank to avoid the risk of overpressure. The snap-fit ​​design between the bottom cover 9 and the pressurizing cylinder 72 allows for quick installation of the air guide pipe 10 while ensuring the air circuit is sealed, forming a pressure-controllable closed system.

[0033] The top of the gas guide pipe 10 extends above the liquid surface inside the sealed tank 4, and the pipe body of the gas guide pipe 10 is fixed by a clamp on the outer wall of the piston. The gas guide pipe 10 extends above the liquid surface to prevent liquid backflow into the pressurizing mechanism; the clamp fixes the pipe body to prevent shaking and gas leakage, ensuring the stability of directional gas delivery during pressurization. When the outlet is above the liquid surface, it is easier to directly control the gas pressure. Since the gas does not directly contact the liquid, the gas pressure can be precisely controlled by adjusting the gas source or pressure reducing valve. This configuration is suitable for applications requiring precise pressure control; when the gas enters the liquid from the outlet above the liquid surface, it avoids the formation of bubbles on the liquid surface. These bubbles can affect the flow properties of the liquid and even cause overflow in some cases. Therefore, the water dispenser in this embodiment does not need to consider how to manage these bubbles; since the outlet is above the liquid surface, maintenance and repair are easier. Operators can easily check whether the outlet is blocked or damaged and perform necessary repairs; compared to an outlet below the liquid surface, an outlet above the liquid surface poses a relatively lower risk of leakage or other malfunctions. Because the gas does not mix directly with the liquid, the risk of explosion or pollution is reduced.

[0034] The stepped valve seat of the pressurizing cylinder 72 and the one-way valve 71 adopt a precision assembly structure. The multi-stage stepped constriction of the valve seat's inner wall forms a progressive interference fit with the outer edge of the one-way valve 71, ensuring that the one-way valve 71 maintains an axial seal under high-pressure gas impact, effectively preventing gas backflow. The annularly distributed vent holes at the bottom of the valve seat dynamically balance the bottom cavity with the external air pressure during piston reciprocating motion, eliminating the adsorption resistance caused by the pressure difference between the inside and outside of the cavity when the piston moves downward, making the hand pump operation smoother and easier. Simultaneously, the airflow buffering effect of the vent holes reduces turbulent noise caused by high-speed piston movement, significantly improving the user experience.

[0035] The bottom cover 9 and the pressure cylinder 72 employ a rotary snap-locking mechanism. When the T-shaped claw aligns with the opening slot of the L-shaped mounting base, rotating the bottom cover 9 causes the claw to slide along the horizontal section of the L-shaped track into the vertical locking section. At this point, the wedge-shaped inclined surface of the claw generates radial pressure against the inner wall of the mounting base, ensuring a gapless fit between the bottom cover 9 and the bottom of the piston. This snap-locking structure suppresses loosening in mechanical vibration environments through the frictional force generated by the self-locking wedge angle. Unlocking requires only a slight reverse rotation, allowing for easy inspection or cleaning of the air passage without the need for tools. The sealing ring groove on the snap-locking surface cooperates with the sealing ring at the bottom of the piston, further ensuring double sealing protection at the air passage connection, balancing ease of disassembly and assembly with system reliability.

[0036] The pressure relief valve 8, through the synergistic action of the stepped valve core 82 and the cylindrical valve body 81, forms an intelligent pressure regulation mechanism. When the pressure inside the sealed tank 4 is normal, the valve core forms an initial seal with the bottom of the valve body under its own weight, preventing gas leakage. Once the internal pressure exceeds a preset threshold, the gas pressure pushes the stepped valve core 82 to slide upward along the inner wall of the valve body. The stepped outer edge of the valve core gradually forms an annular pressure relief channel with the inner wall of the valve body, allowing high-pressure gas to be discharged directionally through the top adjusting screw hole. The multi-stage diameter variation design of the stepped valve core 82 allows the channel opening to automatically and gradually adjust with pressure fluctuations during the pressure relief process, avoiding a sudden pressure drop caused by instantaneous full opening, and ensuring a smooth and controllable pressure relief process. The adjusting screw hole has a built-in thread that can be screwed into a limit bolt. By changing the screw insertion depth, the maximum lift of the valve core is limited, thereby manually setting the critical pressure value for pressure relief. When dynamically balancing pressure, this structure can achieve adaptive fine-tuning by relying on the mechanical feedback of the valve core gravity and the air pressure difference, and can also achieve precise overpressure protection through mechanical limit. The dual function effectively maintains the stability of the internal pressure of the tank and prevents the sealing interface from tearing or structural damage caused by pressure runaway under extreme working conditions.

[0037] A water distribution pipe 41 is connected to the bottom of the sealed tank 4. The water distribution pipe 41 guides the water from the bottom of the tank evenly and stably to the subsequent filtration stage. Connected to this water distribution pipe 41 are at least two horizontally arranged filter cartridges 42, which are neatly distributed horizontally along the connection path of the water distribution pipe 41, forming a highly efficient and orderly filtration array. Each filter cartridge 42 has a unique filtration function, capable of deeply purifying the water flowing through it. When water flows from the water distribution pipe 41 into the filter cartridge 42, the special filter material inside the filter cartridge 42 takes effect, removing various impurities, odors, and potentially harmful substances from the water, ensuring that the water quality meets safe and healthy standards. After completing their filtration task, the outlet of each filter cartridge 42 is connected to the drinking water outlet of the water dispenser via a water collection pipe. The water collection pipe collects the clean water treated by each filter cartridge 42 and then uniformly delivers it to the drinking water outlet of the water dispenser for convenient use.

[0038] It is worth mentioning that the bottom of the sealed tank 4 is connected to a water distribution pipe 41, which connects to filter elements 42. The outlet of the filter elements 42 is connected to the drinking outlet of the water dispenser through a water collection pipe. In one feasible embodiment, multiple filter elements are arranged horizontally side by side. The design of multiple filter elements 42 connected in parallel by the water distribution pipe 41 has many significant advantages. First, it can balance the water flow load. In actual operation, since the filtration performance and water flow resistance of each filter element 42 may have certain differences, without a reasonable water flow distribution mechanism, some filter elements 42 may be overloaded, while others may not be able to fully play their role. The parallel design of the water distribution pipe 41 allows the water flow to be reasonably distributed according to the actual situation of each filter element 42, ensuring that each filter element 42 can operate in the best working condition, thereby improving the filtration efficiency of the entire filtration system. Second, this modular layout of filter elements 42 greatly shortens the water path. In traditional water dispenser designs, the water path is often complex and lengthy. This not only increases water flow resistance, leading to a decrease in filtration speed, but also causes water to remain in the pipes for too long, increasing the risk of bacterial growth in residual water. However, with a modular filter cartridge layout (42), water, after being treated by the cartridge, can quickly enter the collection pipe through a shorter path, reducing unnecessary detours and delays, effectively reducing the possibility of bacterial growth and ensuring the safety and hygiene of drinking water. Furthermore, this design facilitates separate maintenance. When a particular filter cartridge (42) malfunctions or needs replacement, staff can easily operate on that specific cartridge without affecting the normal operation of other cartridges (42). This modular design concept greatly improves the maintainability and management efficiency of the water dispenser, providing users with a more convenient and reliable user experience.

[0039] The connector 11 design achieves seamless integration of the filter cartridge 42 maintenance channel with the overall appearance of the device through a concealed, removable cover plate. The cover plate employs an embedded installation structure flush with the surface of the outer casing 1, secured by magnetic attraction or concealed clips. In the closed state, it seamlessly connects with the casing contour, maintaining the water dispenser's clean and aesthetically pleasing overall design. When the filter cartridge 42 needs replacement, it can be easily removed by hand by lightly touching the edge of the cover plate, directly exposing the filter cartridge 42 mounting position within the connector 11 on the side wall. The operator can then pull out the old filter cartridge 42 laterally and replace it with the new one without disassembling other parts of the outer casing 1. The connector 11 is internally equipped with guide rails and self-locking clips to ensure precise alignment of the filter cartridge 42 during insertion and automatic locking upon reaching the preset position, preventing water leakage due to installation misalignment. The independent disassembly and reassembly of the cover plate localizes the filter cartridge 42 maintenance operation, avoiding the problems of screw hole wear and sealing strip aging caused by frequent opening of the outer casing 1 for filter cartridge 42 replacement, as in traditional designs, significantly extending the sealing life of the main structure. In addition, the cover plate itself acts as a protective barrier, effectively preventing external dust or liquid from splashing into the insertion interface 11 during daily use, reducing the risk of contamination of the filter element 42 interface, and forming a multi-layered protection system.

[0040] The groove 22 of the mounting wall edge 21 achieves a balance between mechanical performance and sealing efficiency through the control of the ratio of depth to wall thickness. The depth of the groove 22 is limited to 1 / 3 to 1 / 2 of the wall edge thickness, ensuring that the sidewall of the groove retains sufficient structural strength after the locking block 31 is embedded, preventing cracking or deformation of the groove due to stress concentration. At the same time, the bottom of the groove 22 and the contact surface with the locking block 31 form a stable support plane, improving the shear resistance of the locking structure. The elastic sealing strip laid at the bottom of the groove expands radially when the protective cover 3 is closed by the pressure of the locking block 31, fully filling the assembly gap between the locking block 31 and the groove wall, forming an annular liquid seal barrier, effectively preventing external liquid from seeping into the bracket 2 along the groove gap. The elastic recovery characteristics of the sealing strip can also compensate for the wear gaps generated by long-term use of the locking parts, maintaining the durability of the edge seal.

[0041] The threaded connection between the main cover 5 and the sealed tank 4 is equipped with a sealing structure. Optionally, the double-layer sealing rings at the threaded connection of the main cover 5 employ a differentiated sealing strategy to construct a composite protection system. When the main cover 5 is screwed into the sealed tank 4, the lower O-ring first contacts the inclined surface of the tank opening, achieving a basic seal through radial compression deformation. As the threads continue to tighten, the tapered cross-section of the upper wedge ring expands radially under axial pressure, filling the microscopic cavities formed by machining tolerances or thread meshing clearances. When temperature fluctuations cause differential expansion between the metal tank and the plastic cover, the O-ring absorbs radial dimensional changes through elastic deformation, while the wedge ring compensates for axial displacement through inclined surface sliding. The two work together to eliminate the damage of thermal stress to the sealing interface. The physical isolation of the double-layer structure also delays the direct erosion of the inner O-ring by external moisture and pollutants, reduces the overall aging rate of the sealing ring, and forms a gradient protection effect.

[0042] In summary, this utility model of a water dispenser with excellent sealing performance achieves multiple sealing guarantees and structural stability through the coordinated operation of multiple components. When the protective cover 3 is fastened, its inner wall locking block 31 and the locking groove 22 of the bracket 2 form a first-level locking, restricting the radial displacement of the protective cover 3. At the same time, the main cover 5 is screwed into the opening of the sealed tank 4 through threads, achieving axial compression sealing of the tank opening. The threaded connection and the locking structure form a double locking, preventing loosening caused by vibration. The circumferential protrusion 61 of the limiting bracket 6 is embedded in the limiting groove 23 of the bracket 2, which not only restricts the circumferential rotation of the sealed tank 4, but also rigidly connects the tank and the outer shell 1 through clamping action, avoiding assembly gaps caused by thermal expansion and contraction or external impact. The protective cover 3 and the main cover 5 adopt a split through-type design, which ensures the independent sealing of the tank opening while ensuring that the locking action of the outer protective cover and the threading action of the inner main cover do not interfere with each other. This reduces opening and closing resistance and disperses stress concentration through the hierarchical structure, extending the service life of the seals. The three-dimensional limiting network formed between the components effectively suppresses vibration transmission and ensures the integrity of the sealing interface during long-term use. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0043] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A water dispenser with good sealing performance, characterized in that, include: The outer shell (1) has a bracket (2) fixed to its upper opening by screws. The inner wall of the bracket (2) extends upward to form an mounting wall edge (21). The mounting wall edge (21) is provided with spaced slots (22) and limiting slots (23). The protective cover (3) is provided with a locking block (31) that engages with the slots (22). The sealed container (4) is fixed inside the outer shell (1). The protective cover (3) has a through hole in its center. The through hole is provided with a main cover (5) that is threaded to the opening of the sealed container (4). The limiting frame (6) is clamped between the bracket (2) and the sealed container (4). The side wall of the limiting frame (6) is provided with a circumferential protrusion (61) that engages with the limiting slots (23).

2. The water dispenser with good sealing performance according to claim 1, characterized in that: The main cover (5) is equipped with a pressurizing hand pump (7) and a pressure relief valve (8). The pressurizing hand pump (7) includes a pressurizing cylinder (72) with a one-way valve (71). The bottom outlet of the pressurizing cylinder (72) is fitted with a bottom cover (9). The bottom cover (9) is provided with an air guide channel and is connected to the bottom end of the air guide pipe (10) through the air guide channel.

3. The water dispenser with good sealing performance according to claim 2, characterized in that: The top end of the gas guide pipe (10) extends above the liquid surface inside the sealed tank (4), and the body of the gas guide pipe (10) is fixed by a clamp on the outer wall of the piston.

4. The water dispenser with good sealing performance according to claim 2, characterized in that: The bottom cavity of the pressurizing cylinder (72) is provided with a stepped valve seat, and the one-way valve (71) is press-fitted into the valve seat by interference fit. The bottom of the valve seat is provided with an air outlet.

5. The water dispenser with good sealing performance according to claim 2, characterized in that: The bottom cover (9) is provided with an L-shaped card seat on its edge, and a T-shaped card claw is provided at the bottom of the pressure cylinder (72). The L-shaped card seat and the T-shaped card claw are rotated and engaged.

6. The water dispenser with good sealing performance according to claim 2, characterized in that: The pressure relief valve (8) includes a cylindrical valve body (81) and a stepped valve core (82); the bottom of the cylindrical valve body (81) is provided with an air inlet communicating with the sealed tank (4), and the top is provided with an adjusting screw hole; the stepped valve core (82) is slidably disposed in the valve body.

7. The water dispenser with good sealing performance according to claim 1, characterized in that: The bottom of the sealed tank (4) is connected to a water distribution pipe (41), which is connected to a filter element (42). The outlet of the filter element (42) is connected to the drinking water outlet of the water dispenser through a water collection pipe.

8. The water dispenser with good sealing performance according to claim 6, characterized in that: The outer casing (1) has an insertion interface (11) for installing a filter element (42) on its side wall, and the insertion interface (11) has a detachable cover plate.

9. The water dispenser with good sealing performance according to claim 1, characterized in that: The groove (22) of the mounting wall edge (21) has a depth of 1 / 3 to 1 / 2 of the wall edge thickness, and a sealing strip is provided at the bottom of the groove.

10. The water dispenser with good sealing performance according to claim 1, characterized in that: The threaded connection between the main cover (5) and the sealed tank (4) is provided with a sealing structure.

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