A toilet tank fill valve mounting structure

Abstract

The utility model discloses a kind of toilet water tank inlet valve mounting structures, it is related to water tank inlet valve technical field, including inlet valve main body, fastening disc, locking nut and toilet water tank, the lower end of inlet valve main body is equipped with inlet pipe, and inlet pipe is set as integral with inlet valve main body, thread groove is set on the outer wall of inlet pipe, installation seat is installed at the contact of inlet valve main body and inlet pipe, the outside of inlet pipe is installed in fastening disc, the outside of inlet pipe is installed in locking nut, fastening disc and locking nut are connected with inlet pipe by screw thread, the bottom of toilet water tank is provided with mounting hole, this inlet valve inlet pipe passes through the mounting hole of toilet water tank bottom, first using fastening disc and inlet pipe connection tightly fixed installation seat, then using locking nut and inlet pipe connection and contact with fastening disc, limit fastening disc, can avoid fastening disc loosening, ensure the sealing property of installed inlet valve.

Description

Technical Field

[0001] This utility model relates to the field of water tank inlet valve technology, specifically a toilet tank inlet valve installation structure. Background Technology

[0002] A toilet tank inlet pipe typically consists of an inlet pipe body and a threaded head located at the lower end of the inlet pipe body. When the inlet pipe needs to be installed, the threaded head at the lower end of the inlet pipe body is passed through the mounting hole at the bottom of the toilet tank and locked with a threaded sleeve. Since the toilet tank is usually installed near the wall, it is inconvenient to disassemble and assemble, making it difficult to inspect or replace the inlet pipe body.

[0003] Chinese Patent Publication No. CN221193579U, authorized on June 21, 2024, discloses a toilet tank inlet valve installation structure, including an inner ring threadedly connected to a first threaded head at the lower end of the inlet pipe body. It also includes a first connector, comprising an inner cylinder and an outer ring coaxially mounted on the upper end of the inner cylinder. The inner wall of the outer ring has a step, and the inner ring is located inside the outer ring and above the step. The top of the outer ring is connected by a first bolt to a device for pressing and fixing the inner ring within the outer ring. The pressure plate also includes a second connector, which includes an outer cylinder and a fixing ring coaxially mounted on the upper end of the outer cylinder. When the main body of the water inlet pipe is inspected or replaced, the first bolt is loosened and the pressure plate is pulled away from the inner ring to remove the main body of the water inlet pipe. After the inspection or replacement is completed, the inner ring is put into the outer ring, the pressure plate is pressed on the inner ring, and the first bolt is tightened so that the pressure plate presses against the inner ring, thus allowing the main body of the water inlet pipe to be installed. The operation is convenient, making it easy to inspect or replace the main body of the water inlet pipe.

[0004] The existing inlet valve is installed by passing the lower inlet pipe through the mounting hole at the bottom of the toilet tank, and then using a threaded sleeve to connect and lock it to the inlet pipe. The threaded sleeve has no limiting structure. During use, the installed inlet valve is subjected to the impact of water flow, which can cause the threaded sleeve to loosen. This results in a loose connection between the inlet valve and the tank, causing water leakage and failing to meet the usage requirements. Utility Model Content

[0005] The purpose of this utility model is to provide a toilet tank inlet valve installation structure to solve the problem mentioned in the background art that when installing the existing inlet valve, the lower inlet pipe is passed through the installation hole at the bottom of the toilet tank, and then a threaded sleeve is used to connect and lock the inlet pipe. However, the threaded sleeve has no limiting structure, and during use, the installed inlet valve is subjected to the impact of water flow, which can cause the threaded sleeve to loosen, resulting in an unsecured connection between the inlet valve and the tank, leading to water leakage and failing to meet the usage requirements.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a toilet tank inlet valve installation structure, comprising an inlet valve body, a fastening disc, a locking nut, and a toilet tank. An inlet pipe is installed at the lower end of the inlet valve body, and the inlet pipe and the inlet valve body are integrally formed. A threaded groove is provided on the outer wall of the inlet pipe. A mounting seat is installed at the contact point between the inlet valve body and the inlet pipe, and the mounting seat and the inlet valve body are integrally formed. The fastening disc is installed outside the inlet pipe and is located below the mounting seat. The locking nut is installed outside the inlet pipe and is located below the fastening disc. The fastening disc and the locking nut are threadedly connected to the inlet pipe. An installation hole is provided at the bottom of the toilet tank. The diameter of the inlet pipe is smaller than the diameter of the installation hole, and the diameters of the mounting seat and the fastening disc are larger than the diameter of the installation hole.

[0007] Preferably, a first sealing element is installed below the mounting base, and the first sealing element is movably fitted onto the outside of the water inlet pipe.

[0008] Preferably, the first seal includes a first annular gasket and a first sealing kit, the first sealing kit being disposed at the lower end of the first annular gasket, and the inner cross-section of the first sealing kit being trapezoidal.

[0009] Preferably, the lower end of the mounting base is fixedly installed with two protrusions, and the two protrusions are arranged on both sides of the water inlet pipe. The upper end of the first annular gasket is provided with two grooves, and the grooves are arranged corresponding to the protrusions.

[0010] Preferably, a second seal is installed above the fastening disc, and the second seal is movably fitted onto the outside of the water inlet pipe.

[0011] Preferably, the second seal includes a second annular gasket and a second sealing kit. The second sealing kit is disposed at the upper end of the second annular gasket, and the outer cross section of the second sealing kit is trapezoidal. The gradient of the first sealing kit and the second sealing kit is the same.

[0012] Preferably, a water-swellable ring is provided inside the mounting hole, and the water-swellable ring is installed inside the water inlet pipe, with the water-swellable ring positioned between the first sealing kit and the second sealing kit.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model device consists of a mounting base, a water inlet pipe, a first sealing element, a fastening plate, a locking nut, and a second sealing element. The water inlet pipe passes through the mounting hole at the bottom of the toilet tank, and the fastening plate is connected to the water inlet pipe, ensuring that both the first and second sealing elements are in close contact with the toilet tank. The water inlet valve is installed by the clamping action between the mounting base and the fastening plate. The first and second sealing elements ensure the sealing performance of the water inlet valve installation. The locking nut is connected to the water inlet pipe and contacts the fastening plate, limiting the position of the fastening plate and preventing it from loosening. This utility model device, through the inclusion of a water-swellable ring, allows water to seep into the mounting hole when the sealing of the installation structure deteriorates. Upon contact with the water-swellable ring, the ring expands, filling the gap in the mounting hole and further improving the installation seal. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This diagram shows the connection between the inlet valve body and the toilet tank of this utility model. Figure 3 This is a 3D view of the mounting base of this utility model. Figure 4 This is a perspective view of the first sealing element of this utility model. Figure 5 This is a rear perspective view of the first sealing element of this utility model; Figure 6 This is a front perspective view of the second sealing element of this utility model.

[0015] In the diagram: 1. Inlet valve body; 2. Mounting base; 3. Inlet pipe; 4. First seal; 5. Fastening disc; 6. Locking nut; 7. Second seal; 8. Water expansion ring; 9. Toilet tank; 10. Mounting hole; 11. Protrusion; 12. First annular gasket; 13. First sealing kit; 14. Groove; 15. Second annular gasket; 16. Second sealing kit. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Please see Figure 1-6This utility model provides an embodiment of a toilet tank inlet valve installation structure, including an inlet valve body 1, a fastening plate 5, a locking nut 6, and a toilet tank 9. An inlet pipe 3 is installed at the lower end of the inlet valve body 1, and the inlet pipe 3 is integrally formed with the inlet valve body 1. A threaded groove is provided on the outer wall of the inlet pipe 3. An mounting seat 2 is installed at the contact point between the inlet valve body 1 and the inlet pipe 3, and the mounting seat 2 is integrally formed with the inlet valve body 1. The fastening plate 5 is installed outside the inlet pipe 3 and is located below the mounting seat 2. The locking nut 6 is installed outside the inlet pipe 3 and is located below the fastening plate 5. The fastening plate 5 and the locking nut 6 are threadedly connected to the inlet pipe 3. An installation hole 10 is provided at the bottom of the toilet tank 9. The diameter of the inlet pipe 3 is smaller than the diameter of the installation hole 10, while the diameters of the mounting seat 2 and the fastening plate 5 are larger than the diameter of the installation hole 10.

[0018] During installation: Align the lower end of the inlet pipe 3 with the mounting hole 10 at the bottom of the toilet tank 9 and pass it through. First, use the fastening plate 5 to connect with the inlet pipe 3 so that the mounting base 2 is in close contact with the bottom of the toilet tank 9 and the fastening plate 5 is in close contact with the lower end of the toilet tank 9. The inlet valve is installed by relying on the clamping action. Then, use the locking nut 6 to connect with the inlet pipe 3 and contact the fastening plate 5. The locking nut 6 limits the fastening plate 5 to prevent it from loosening.

[0019] Please see Figure 1 , Figure 3 , such as 4 and Figure 5 A first sealing element 4 is installed below the mounting base 2, and the first sealing element 4 is movably fitted onto the outside of the water inlet pipe 3. The first sealing element 4 includes a first annular gasket 12 and a first sealing kit 13. The first sealing kit 13 is located at the lower end of the first annular gasket 12, and the inner cross section of the first sealing kit 13 is trapezoidal. Two protrusions 11 are fixedly installed at the lower end of the mounting base 2, and the two protrusions 11 are located on both sides of the water inlet pipe 3. Two grooves 14 are provided at the upper end of the first annular gasket 12, and the grooves 14 are corresponding to the protrusions 11. During installation, the first sealing element 4 is fitted onto the outside of the water inlet pipe 3 and contacts the mounting base 2. The first sealing element 4 fills the gap between the mounting base 2 and the toilet tank 9, ensuring the sealing of the connection between the mounting base 2 and the toilet tank 9. The protrusions 11 are aligned with the grooves 14 and inserted to position the first sealing element 4 installed at the lower end of the mounting base 2, preventing the first sealing element 4 from being squeezed and displaced by force.

[0020] Please see Figure 1 , Figure 2 and Figure 6A second seal 7 is installed above the fastening plate 5, and the second seal 7 is movably fitted outside the water inlet pipe 3. The second seal 7 includes a second annular gasket 15 and a second sealing kit 16. The second sealing kit 16 is located at the upper end of the second annular gasket 15. The outer cross section of the second sealing kit 16 is trapezoidal, and the gradient of the first sealing kit 13 and the second sealing kit 16 is the same. During installation, the second seal 7 is fitted outside the water inlet pipe 3 and contacts the fastening plate 5. The second seal 7 fills the gap between the fastening plate 5 and the toilet tank 9, which can ensure the sealing of the connection between the fastening plate 5 and the toilet tank 9.

[0021] Please see Figure 2 The mounting hole 10 is provided with a water-expanding ring 8, which is installed inside the water inlet pipe 3. The water-expanding ring 8 is located between the first sealing kit 13 and the second sealing kit 16. When the sealing performance of the installation structure decreases, water penetrates into the mounting hole 10 and comes into contact with the water-expanding ring 8. The water-expanding ring 8 will expand and fill the gap in the mounting hole 10, further improving the installation sealing performance.

[0022] Working principle: First, the first sealing element 4 is fitted onto the outside of the water inlet pipe 3 and contacts the mounting base 2. Then, the lower end of the water inlet pipe 3 is aligned with the mounting hole 10 at the bottom of the toilet tank 9 and passed through. The water-expanding ring 8 is fitted onto the outside of the water inlet pipe 3 and pushed into the mounting hole 10. The second sealing element 7 is fitted onto the outside of the water inlet pipe 3. First, the fastening plate 5 is connected to the water inlet pipe 3 so that both the first sealing element 4 and the second sealing element 7 are in close contact with the toilet tank 9. The water inlet valve is installed by means of clamping. Then, the locking nut 6 is connected to the water inlet pipe 3 and contacts the fastening plate 5. The locking nut 6 limits the fastening plate 5 to prevent it from loosening.

[0023] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A toilet tank inlet valve installation structure, comprising an inlet valve body (1), a fastening disc (5), a locking nut (6), and a toilet tank (9), characterized in that: A water inlet pipe (3) is installed at the lower end of the water inlet valve body (1), and the water inlet pipe (3) and the water inlet valve body (1) are integrated. A threaded groove is provided on the outer wall of the water inlet pipe (3). A mounting seat (2) is installed at the contact point between the water inlet valve body (1) and the water inlet pipe (3), and the mounting seat (2) and the water inlet valve body (1) are integrated. The fastening disc (5) is installed on the outside of the water inlet pipe (3), and the fastening disc (5) is located on the mounting seat (2). Below, the locking nut (6) is installed outside the water inlet pipe (3), and the locking nut (6) is located below the fastening plate (5). The fastening plate (5) and the locking nut (6) are threadedly connected to the water inlet pipe (3). The bottom of the toilet tank (9) is provided with an installation hole (10). The diameter of the water inlet pipe (3) is smaller than the diameter of the installation hole (10), and the diameters of the mounting base (2) and the fastening plate (5) are larger than the diameter of the installation hole (10).

2. The toilet tank inlet valve installation structure according to claim 1, characterized in that: A first seal (4) is installed below the mounting base (2), and the first seal (4) is movably fitted onto the outside of the water inlet pipe (3).

3. The toilet tank inlet valve installation structure according to claim 2, characterized in that: The first seal (4) includes a first annular gasket (12) and a first sealing kit (13). The first sealing kit (13) is disposed at the lower end of the first annular gasket (12), and the inner cross section of the first sealing kit (13) is trapezoidal.

4. The toilet tank inlet valve installation structure according to claim 3, characterized in that: The lower end of the mounting base (2) is fixedly installed with two protrusions (11), and the two protrusions (11) are set on both sides of the water inlet pipe (3). The upper end of the first annular gasket (12) is provided with two grooves (14), and the grooves (14) are corresponding to the protrusions (11).

5. The toilet tank inlet valve installation structure according to claim 1, characterized in that: A second seal (7) is installed above the fastening plate (5), and the second seal (7) is movably fitted onto the outside of the water inlet pipe (3).

6. The toilet tank inlet valve installation structure according to claim 5, characterized in that: The second seal (7) includes a second annular gasket (15) and a second sealing kit (16). The second sealing kit (16) is disposed at the upper end of the second annular gasket (15). The outer cross section of the second sealing kit (16) is trapezoidal, and the gradient of the first sealing kit (13) and the second sealing kit (16) is the same.

7. The toilet tank inlet valve installation structure according to claim 6, characterized in that: The mounting hole (10) is provided with a water-swellable ring (8), and the water-swellable ring (8) is installed inside the water inlet pipe (3). The water-swellable ring (8) is located between the first sealing kit (13) and the second sealing kit (16).

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