Double-seal water tank pass-stop structure

Abstract

The utility model discloses a double-sealing water tank on-off structure which comprises a water tank body, a water outlet hole is formed in the bottom of the water tank body, a sealing valve is arranged in the water outlet hole and comprises a valve body, one end of the valve body extends into the water outlet hole, the other end of the valve body is located in the water tank body, and a sealing flange is arranged at the end, extending into the water outlet hole, of the valve body. A sealing ring is arranged at one end inside the water tank body, the valve body is provided with at least two movable positions, and the valve body slides between the two movable positions in a reciprocating mode, so that the sealing flange and the sealing ring abut against or are separated from the end face and the side wall of the water outlet hole at the same time. The water outlet hole is sealed through the sealing flange and the sealing ring at the same time, sealing failure of the water tank body caused by aging failure of a single sealing element is prevented, and the sealing performance of the water tank body is improved.

Description

Technical Field

[0001] The utility model belongs to the field of water tank bodies, and particularly relates to a water tank on-off structure with double seals. Background Art

[0002] As one of the commonly used household appliances, a water dispenser is applied to most families. The water dispenser usually has a water tank body for storing water. When a user pours water, the valve of the water tank body is opened to allow water to flow out of the water tank body. However, most of the existing valves of the water tank bodies of water dispensers usually only have a single-seal structure. After the water dispenser has been used for a period of time, the sealing unit is prone to aging, resulting in leakage of the water tank body.

[0003] In the prior art, as disclosed in the patent document with the publication number CN208876160U, a water tank water-stop structure of a water dispenser is disclosed, which includes a water outlet interface provided on the water tank, and an elastic sealing ring is provided at the water outlet interface. The water outlet interface of this structure is only sealed by a single elastic sealing ring. When the elastic sealing ring ages and fails after being used for a period of time, the water tank will leak, and the sealing effect is not ideal.

[0004] Therefore, there is an urgent need for a water tank on-off structure with double seals to solve the above problems. Summary of the Invention

[0005] Aiming at the problems in the prior art, the utility model provides a water tank on-off structure with double seals, which seals the water outlet hole through a sealing flange and a sealing ring at the same time, preventing the sealing failure of the water tank body when a single sealing element ages and fails, and improving the sealing performance of the water tank body.

[0006] The utility model is realized as follows: A water tank on-off structure with double seals includes a water tank body. A water outlet hole is provided at the bottom of the water tank body. A sealing valve is provided in the water outlet hole. The sealing valve includes a valve body. One end of the valve body extends into the water outlet hole from top to bottom. A sealing flange and a flexible sealing ring are provided at intervals up and down on the outer periphery of the valve body. The diameter of the sealing flange is larger than the water outlet hole, and it covers and seals the upper end of the water outlet hole. The sealing flange has elasticity or flexibility. The sealing ring is located in the water outlet hole and is pressed against the side wall of the water outlet hole for sealing. By sealing the water outlet hole through the sealing flange and the sealing ring at the same time, it can prevent the leakage of the water tank body when the sealing flange or the sealing ring ages and fails, improve the sealing performance of the water tank body, and at the same time extend the service life of the water tank body.

[0007] The valve body has at least two moving positions, and the valve body slides back and forth between the two moving positions, so that the sealing flange and the sealing ring are simultaneously in contact with or separated from the end face and the side wall of the water outlet hole, for closing or opening the sealing valve, simplifying the operation process of closing or opening the sealing valve, and improving the convenience of the sealing valve.

[0008] Preferably, the inner wall of the water outlet hole includes a sealing portion that gradually decreases from top to bottom, and the sealing ring abuts against or separates from the sealing portion. The sealing portion is in the shape of a horn that gradually decreases from top to bottom, shortening the movement stroke when the sealing ring separates from the sealing portion, so that the sealing valve can be opened without the sealing ring moving outside the water outlet hole. Under the condition of ensuring the sealing effect, the convenience of the sealing valve is further improved.

[0009] Preferably, a first abutting portion is provided at the bottom of the valve body, a second abutting portion corresponding to the first abutting portion is provided in the water outlet hole, and an elastic unit is sleeved on the circumferential side of the valve body. Two ends of the elastic unit respectively abut against the first abutting portion and the second abutting portion. The elastic unit is used to provide a pre-tightening force when the valve body is closed, improving the abutting force when the sealing flange and the sealing ring abut against the water outlet hole, and improving the sealing performance and reliability of the sealing flange and the sealing ring; at the same time, it can also drive the valve body to automatically close, further improving the convenience of the sealing valve.

[0010] Specifically, a vertically moving lifting unit is provided below the valve body. The lifting unit abuts against the valve body and is used to drive the valve body to move upward, thereby opening the sealing valve. Since the valve body abuts against the elastic unit, when the valve body is automatically closed under the drive of the elastic unit, the lifting unit is simultaneously driven to reset, enabling the lifting unit to achieve automatic reset without the need for additional power components, simplifying the mechanism of the lifting unit.

[0011] Specifically, the lifting unit further includes a water outlet channel communicating with the water outlet hole. When the sealing valve is opened, the water outlet channel communicates with the water tank body. The water outlet channel is used to discharge the water in the water tank body to the outside. By arranging the water outlet channel on the lifting unit, the lifting unit functions as a pipeline, making the function of the lifting unit more diverse and improving the practicality of the lifting unit.

[0012] Specifically, the circumferential side of the first abutting portion is cooperatively connected with the inner wall of the water outlet hole, and a plurality of water passing grooves are further provided on the circumferential side of the valve body. When the sealing valve is opened, the water passing grooves simultaneously communicate the water tank body and the water outlet channel. When the circumferential side of the first abutting portion is cooperatively connected with the inner wall of the water outlet hole, it can guide the movement of the valve body and prevent the valve body from getting stuck during movement, improving the smoothness of the valve body movement; the water passing grooves are used to prevent the water outlet hole from being blocked due to the cooperation between the valve body and the water outlet hole, improving the reliability of the valve body.

[0013] Preferably, the valve body is further provided with a first installation groove adapted to the sealing flange and a second installation groove adapted to the sealing ring. The sealing flange and the sealing ring are respectively installed in the first installation groove and the second installation groove, which improves the reliability of the sealing flange and the sealing ring, prevents the sealing flange and the sealing ring from falling off easily, and improves the installation reliability of the sealing flange and the sealing ring.

[0014] Specifically, the cross-section of the first installation groove is in a "C" shape and includes a first limiting wall provided at the top of the first installation groove. The radial dimension of the first limiting wall is larger than the aperture dimension of the water outlet hole. When the sealing valve is closed, since the radial dimension of the first limiting wall is larger than the radial dimension of the water outlet hole, the first limiting wall overlaps with the end face of the water outlet hole in the vertical direction, so that the sealing flange is clamped by both the first limiting wall and the end face of the water outlet hole, improving the sealing performance of the sealing flange.

[0015] Specifically, the first installation groove further includes a second limiting wall provided at the bottom of the first installation groove. The bottom of the second limiting wall is gradually inclined inward from top to bottom to form a transition part. The transition part is used for transition when installing the sealing flange, making it easier to install the sealing flange and improving the installation convenience of the sealing flange.

[0016] Preferably, there is no pressing plate on the upper side of the sealing flange. When the sealing flange abuts against the end face of the water outlet hole, the sealing flange undergoes axial deformation. On the one hand, the absence of a pressing plate on the upper side of the sealing flange allows the sealing flange to have a greater amount of deformation in the axial direction, which helps the sealing flange to fit more closely to the water outlet hole, thereby improving the sealing effect. On the other hand, it makes the sealing flange easy to install and replace. When the sealing flange needs to be replaced, removing the sealing flange from the lower side of the sealing flange requires removing the entire sealing valve, which is cumbersome. When there is no pressing plate on the upper side of the sealing flange, the sealing flange can be directly removed and replaced from the upper side, improving the installation and maintenance convenience of the sealing flange.

[0017] Preferably, a ring-shaped boss is provided on the surface of the sealing flange that abuts against the end face of the water outlet hole. When the sealing valve is closed, the ring-shaped boss abuts against the end face of the water outlet hole. Since the contact area between the ring-shaped boss and the end face of the water outlet hole is small, the pressure received by the ring-shaped boss is increased, and further the ring-shaped boss undergoes greater deformation, which can more effectively prevent gaps from appearing between the sealing flange and the end face of the water outlet hole, improving the sealing performance of the sealing flange.

[0018] The beneficial effects of the present utility model:

[0019] The present utility model provides a water tank on-off structure with double seals. By simultaneously sealing the water outlet hole with a sealing flange and a sealing ring, it can prevent the water tank body from leaking when the sealing flange or the sealing ring ages and fails, improving the sealing performance of the water tank body and extending the service life of the water tank body at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an overall cross-sectional view of the water tank on-off structure of the present utility model;

[0021] Figure 2 is a cross-sectional view of the water tank body of the water tank on-off structure of the present utility model;

[0022] Figure 3 is a schematic diagram of the sealing valve of the water tank on-off structure of the present utility model;

[0023] Figure 4 is a schematic diagram of the valve body of the water tank on-off structure of the present utility model;

[0024] Figure 5 is a schematic diagram of the lifting unit of the water tank on-off structure of the present utility model;

[0025] Figure 6 is a schematic diagram of the sealing flange of the water tank on-off structure of the present utility model.

[0026] REFERENCE NUMERALS:

[0027] 1, water tank body; 2, sealing valve; 3, lifting unit; 11, water outlet hole; 21, valve body; 22, sealing flange; 23, sealing ring; 24, elastic unit; 31, water outlet channel; 111, sealing part; 112, second abutting part; 211, first installation groove; 212, second installation groove; 213, water passing groove; 214, first abutting part; 221, annular boss; 2111, first limiting wall; 2112, second limiting wall; 2113, transition part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] As Figures 1-6As shown in the figure, a double-sealed water tank on-off structure includes a water tank body 1. A water outlet hole 11 is provided at the bottom of the water tank body 1. A sealing valve 2 is arranged in the water outlet hole 11. The sealing valve 2 includes a valve body 21. One end of the valve body 21 extends into the water outlet hole 11 from top to bottom. Sealing flanges 22 and a flexible sealing ring 23 are arranged at intervals up and down on the outer periphery of the valve body 21. The diameter of the sealing flange 22 is larger than that of the water outlet hole 11 and covers and seals the upper end of the water outlet hole 11. The sealing flange 22 is elastic or flexible. The sealing ring 23 is located in the water outlet hole and is in pressure contact and sealing with the side wall of the water outlet hole 11. By sealing the water outlet hole 11 with the sealing flange 22 and the sealing ring 23 at the same time, it can prevent the water tank body 1 from leaking when the sealing flange 22 or the sealing ring 11 ages and fails, improve the sealing performance of the water tank body 1, and at the same time extend the service life of the water tank body 1.

[0030] In this embodiment, the valve body 21 is further provided with a first installation groove 211 adapted to the sealing flange 22 and a second installation groove 212 adapted to the sealing ring 23. The sealing flange 22 and the sealing ring 23 are respectively installed in the first installation groove 211 and the second installation groove 212, which improves the reliability of the sealing flange 22 and the sealing ring 23, prevents the sealing flange 22 and the sealing ring 23 from falling off easily, and improves the installation reliability of the sealing flange 22 and the sealing ring 23.

[0031] Specifically, the cross-section of the first installation groove 211 is in a "C" shape and includes a first limiting wall 2111 arranged at the top of the first installation groove 211. The radial dimension of the first limiting wall 2111 is larger than the aperture dimension of the water outlet hole 11. When the sealing valve 2 is closed, since the radial dimension of the first limiting wall 2111 is larger than the radial dimension of the water outlet hole 11, the first limiting wall 2111 overlaps with the end face of the water outlet hole 11 in the vertical direction, so that the sealing flange 22 is clamped by the first limiting wall 2111 and the end face of the water outlet hole 11 at the same time, improving the sealing performance of the sealing flange 22.

[0032] Specifically, the first installation groove 211 further includes a second limiting wall 2112 arranged at the bottom of the first installation groove 211. The bottom of the second limiting wall 2112 is gradually inclined inward from top to bottom to form a transition part 2113. The transition part 2113 is used for transition when installing the sealing flange 22, making the sealing flange 22 easier to install and improving the installation convenience of the sealing flange 22.

[0033] In this embodiment, there is no pressing plate on the upper side of the sealing flange 22. When the sealing flange 22 abuts against the end face of the water outlet hole 11, the sealing flange 22 undergoes axial deformation. The absence of a pressing plate on the upper side of the sealing flange 22 enables the sealing flange 22 to have a greater amount of deformation in the axial direction, which helps the sealing flange 22 to fit more closely to the water outlet hole 11, thereby improving the sealing effect. On the other hand, it makes the sealing flange 22 convenient for installation and replacement. When the sealing flange 22 needs to be replaced, removing the sealing flange 22 from the lower side requires removing the entire sealing valve 2, which is cumbersome. When there is no pressing plate on the upper side of the sealing flange 22, the sealing flange 22 can be directly removed and replaced from the upper side, improving the convenience of installation and maintenance of the sealing flange 22.

[0034] In this embodiment, an annular boss 221 is provided on the surface of the sealing flange 22 that abuts against the end face of the water outlet hole 11. When the sealing valve 2 is closed, the annular boss 221 abuts against the end face of the water outlet hole 11. Since the contact area between the annular boss 221 and the end face of the water outlet hole 11 is small, the pressure received by the annular boss 221 is increased, thereby causing the annular boss 221 to undergo greater deformation, which can more effectively prevent gaps from appearing between the sealing flange 22 and the end face of the water outlet hole 11, improving the sealing performance of the sealing flange 22.

[0035] In this embodiment, both the sealing flange 22 and the sealing ring 23 are silicone sealing rings.

[0036] In this embodiment, the inner wall of the water outlet hole 11 includes a sealing portion 111 that gradually decreases from top to bottom, and the sealing ring 23 abuts against or separates from the sealing portion 111. The sealing portion 111 is in the shape of a horn that gradually decreases from top to bottom, shortening the movement stroke when the sealing ring 23 separates from the sealing portion 111, enabling the sealing ring 23 to open the sealing valve 2 without moving outside the water outlet hole 11. While ensuring the sealing effect, the convenience of the sealing valve 2 is further improved.

[0037] In this embodiment, a first abutting portion 214 is provided at the bottom of the valve body 21, and a second abutting portion 112 corresponding to the first abutting portion 214 is provided on the water outlet hole 11. An elastic unit 24 is sleeved around the circumference of the valve body 21, and both ends of the elastic unit 24 abut against the first abutting portion 214 and the second abutting portion 112 respectively. The elastic unit 24 is used to provide a pre-tightening force when the valve body 21 is closed, increasing the abutting force when the sealing flange 22 and the sealing ring 23 abut against the water outlet hole 11, improving the sealing performance and reliability of the sealing flange 22 and the sealing ring 23. At the same time, it can also drive the valve body 21 to automatically close, further improving the convenience of the sealing valve 2.

[0038] In this embodiment, the elastic unit 24 is a compression spring.

[0039] Specifically, a vertically movable lifting unit 3 is provided below the valve body 21. The lifting unit 3 abuts against the valve body 21 and is used to drive the valve body 21 to move upward, thereby opening the sealing valve 2. Since the valve body 21 abuts against the elastic unit 24, when the valve body 21 is automatically closed under the drive of the elastic unit 24, the lifting unit 3 is simultaneously driven to reset, enabling the lifting unit 3 to achieve automatic reset without the need to additionally increase power elements, and simplifying the mechanism of the lifting unit 3.

[0040] Specifically, the lifting unit 3 further includes a water outlet channel 31 communicating with the water outlet hole 11. When the sealing valve 2 is opened, the water outlet channel 31 communicates with the water tank body 1. The water outlet channel 31 is used to discharge the water in the water tank body 1 to the outside. By arranging the water outlet channel 31 on the lifting unit 3, the lifting unit 3 functions as a pipeline, making the function of the lifting unit 3 more diverse and improving the practicability of the lifting unit 3.

[0041] Specifically, the periphery of the first abutting portion 214 is cooperatively connected with the inner wall of the water outlet hole 11. A plurality of water overflow grooves 213 are further provided on the periphery of the valve body 21. When the sealing valve 2 is opened, the water overflow grooves 213 simultaneously communicate the water tank body 1 and the water outlet channel 31. When the periphery of the first abutting portion 214 is cooperatively connected with the inner wall of the water outlet hole 11, it can guide the movement of the valve body 21 and prevent the valve body 21 from getting stuck during movement, improving the smoothness of the movement of the valve body 21; the water overflow grooves 213 are used to prevent the valve body 21 from being connected with the water outlet hole 11 and causing blockage of the water outlet hole 11, improving the reliability of the valve body 21.

[0042] The valve body 21 has at least two movable positions. The valve body 21 reciprocally slides between the two movable positions, enabling the sealing flange 22 and the sealing ring 23 to simultaneously abut against or separate from the end face and the side wall of the water outlet hole 11, for closing or opening the sealing valve 2, simplifying the operation process of closing or opening the sealing valve 2, and improving the convenience of the sealing valve 2.

[0043] According to the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A double-sealed water tank on-off structure, comprising a water tank body, a water outlet hole is provided at the bottom of the water tank body, a sealing valve is provided in the water outlet hole, and the characteristics are: The sealing valve includes a valve body, and one end of the valve body extends into the water outlet hole from top to bottom; a sealing flange and a flexible sealing ring are arranged at intervals up and down on the outer periphery of the valve body, the diameter of the sealing flange is larger than that of the water outlet hole, and the sealing flange covers and seals the upper end of the water outlet hole, and the sealing flange is elastic or flexible; the sealing ring is located in the water outlet hole and is in pressing contact with the side wall of the water outlet hole for sealing. The valve body has at least two moving positions, and the valve body slides reciprocally between the two moving positions, so that the sealing flange and the sealing ring are simultaneously in contact with or separated from the end face and the side wall of the water outlet hole, for closing or opening the sealing valve.

2. A double-sealed water tank on-off structure according to claim 1, characterized in that: The inner wall of the water outlet hole includes a sealing portion that gradually decreases from top to bottom, and the sealing ring is in contact with or separated from the sealing portion.

3. A double-sealed water tank on-off structure according to claim 1, characterized in that: A first abutting portion is provided at the bottom of the valve body, a second abutting portion corresponding to the first abutting portion is provided in the water outlet hole, and an elastic unit is sleeved on the circumferential side of the valve body, and both ends of the elastic unit are in abutting contact with the first abutting portion and the second abutting portion respectively.

4. A double-sealed water tank on-off structure according to claim 3, characterized in that: A vertically moving lifting unit is provided below the valve body, and the lifting unit is in abutting contact with the valve body for driving the valve body to move upward, thereby opening the sealing valve.

5. A double-sealed water tank on-off structure according to claim 4, characterized in that: The lifting unit further includes a water outlet channel communicated with the water outlet hole, and when the sealing valve is opened, the water outlet channel is communicated with the water tank body.

6. A double-sealed water tank on-off structure according to claim 5, characterized in that: The circumferential side of the first abutting portion is in mating connection with the inner wall of the water outlet hole, and a plurality of water passing grooves are further provided on the circumferential side of the valve body, and when the sealing valve is opened, the water passing grooves communicate the water tank body and the water outlet channel at the same time.

7. A double-sealed water tank on-off structure according to claim 1, characterized in that: The valve body is further provided with a first installation groove adapted to the sealing flange and a second installation groove adapted to the sealing ring, and the sealing flange and the sealing ring are respectively installed in the first installation groove and the second installation groove.

8. A double-sealed water tank on-off structure according to claim 7, characterized in that: The cross section of the first installation groove is in a "C" shape, and includes a first limiting wall provided at the top of the first installation groove, and the radial dimension of the first limiting wall is larger than the aperture dimension of the water outlet hole; the first installation groove further includes a second limiting wall provided at the bottom of the first installation groove, and the bottom of the second limiting wall is gradually inclined inward from top to bottom to form a transition portion.

9. A double-sealed water tank on-off structure according to claim 1, characterized in that: There is no pressing plate on the upper side of the sealing flange, and when the sealing flange is in pressing contact with the end face of the water outlet hole, the sealing flange undergoes axial deformation.

10. A double-sealed water tank on-off structure according to claim 1, characterized in that: An annular boss is provided on the surface of the sealing flange in contact with the end face of the water outlet hole, and when the sealing valve is closed, the annular boss is in pressing contact with the end face of the water outlet hole.

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