A protection mechanism for a water valve spool seal gasket

Abstract

The application belongs to the technical field of water valves, and particularly relates to a protection mechanism for a sealing gasket of a valve core of a water valve, which comprises a valve seat, the valve seat is a hollow structure, water guide pipes are arranged on the two sides of the valve seat, and a valve core is arranged in the valve seat, a sealing gasket is arranged between the valve core and the water guide pipes, the sealing gasket is in contact with the surface of the valve core, a first water guide hole is arranged on one side of the valve core to which the sealing gasket is attached, and second water guide holes that are in communication with each other are arranged on the two sides of the valve core, specifically, the rotating shaft of the valve core is designed as an eccentric shaft, so that the dynamic adjustment of the pressure state of the sealing gasket during the opening and closing of the valve is realized, the sealing effect is improved by increasing the sealing pressure when the valve is closed, and the performance deterioration caused by long-term fixed pressure is avoided by reducing the pressure degree when the valve is opened, so as to prolong the service life of the sealing gasket.

Description

Technical Field

[0001] This invention belongs to the field of water valve technology, and specifically relates to a protective mechanism for the sealing gasket of a water valve core. Background Technology

[0002] Automotive water valves are a crucial component of key parts in automotive cooling and air conditioning systems, and their stability and reliability directly affect the overall operation of the vehicle. In practical use, the automotive water valve seat typically consists of three parts: the valve core, the valve core sealing gasket, and the valve body. A sealing gasket is installed between the valve core and the valve body to achieve a seal and prevent liquid leakage.

[0003] However, because the valve core sealing gasket is sandwiched between the valve core and the valve body, its sealing performance gradually declines due to long-term pressure, thus shortening its service life. After prolonged use, it becomes difficult to meet the sealing requirements of the water valve. Summary of the Invention

[0004] In view of this, the present invention provides a protective mechanism for the valve core sealing gasket of a water valve, the purpose of which is to protect the sealing gasket, thereby extending its service life and improving the sealing effect of the water valve.

[0005] The technical solution adopted in this invention is as follows:

[0006] A protective mechanism for a water valve core sealing gasket includes a valve seat, which is a hollow structure. Water guide pipes are inserted through both sides of the valve seat, and a valve core is provided inside the valve seat. A sealing gasket is provided between the valve core and the water guide pipes. The sealing gasket abuts against the surface of the valve core. A first water guide hole is opened on one side of the sealing gasket that is in contact with the valve core. A second water guide hole is opened on both sides of the valve core and is interconnected. A third water guide hole is opened at both ends of the water guide pipes.

[0007] The valve core has a rotating shaft at both ends along its length, and the rotating shaft is an eccentric shaft.

[0008] As a preferred technical solution, the end of the water guide pipe that is inserted into the valve seat is the docking end, and the sealing gasket is provided with a collar that matches the docking end, wherein the docking end is inclined.

[0009] In some embodiments, the surface of the collar is provided with grooves distributed around its circumference, and a sealing ring is fitted inside the grooves.

[0010] In some embodiments, a spring is fitted onto the collar, with its two ends along its length abutting against the inner walls of the sealing gasket and the valve seat, respectively.

[0011] In some embodiments, the bottom of the valve core is provided with a base plate, which fits against the bottom inner wall of the valve seat and is sleeved on the rotating shaft. The bottom surface of the base plate is provided with a guide groove, which passes through the base plate and is distributed along the rotation direction of the rotating shaft. The bottom inner wall of the valve seat is provided with a guide post corresponding to the guide groove.

[0012] In some embodiments, a turntable is provided on the top of the chassis, which is movably mounted on a rotating shaft, wherein the guide post passes through a guide groove and is connected to the bottom of the turntable.

[0013] In some embodiments, the top of the chassis is provided with sliding grooves on both sides, and a push-pull column is fitted inside the sliding groove. The top of the two push-pull columns facing one end is provided with a transmission column, and the top of the push-pull column is in contact with the bottom of the turntable.

[0014] In some embodiments, the top surface of the turntable is provided with an arc-shaped groove, and the transmission column passes through the interior of the arc-shaped groove.

[0015] In some embodiments, a movable block is provided at the end of the push-pull column away from the transmission column, and the movable block extends along the length direction of the valve core.

[0016] In some embodiments, the surface of the valve core is provided with a clamping groove adapted to the movable block, and the end of the movable block has an arc-shaped structure.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] 1. This invention achieves dynamic adjustment of the pressure state of the sealing gasket when the valve is opened and closed by designing the rotation shaft of the valve core as an eccentric shaft: when closed, the sealing pressure is increased to improve the sealing effect, and when opened, the pressure is reduced to avoid performance degradation caused by long-term fixed pressure, so as to extend the service life of the sealing gasket.

[0019] 2. This invention utilizes the linkage structure of the valve core bottom chassis, turntable, push-pull column and movable block. By cooperating with the turntable arc groove and the transmission column, the movable block automatically protrudes to fill the gap between the valve core and the inner wall of the valve seat when the valve is closed. This helps to prevent water from seeping into the space between the sealing gasket and the valve core, reduces the risk of leakage caused by the reserved rotation space in the eccentric shaft design, and balances the valve core rotation flexibility and sealing integrity.

[0020] 3. This invention, by setting a groove and a sealing ring on the collar of the sealing gasket, and matching it with the inclined water guide pipe connection end, not only uses the inclined surface to disperse the contact pressure and avoid local stress concentration, but also fills the tiny gaps through the elastic deformation of the sealing ring. At the same time, the spring on the outside of the collar forms an elastic buffer mechanism to automatically adapt to water pressure fluctuations and assembly deviations, further enhancing the sealing reliability. Attached Figure Description

[0021] The present invention will be described by way of example and with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the protective mechanism for the water valve core sealing gasket provided by the present invention.

[0023] Figure 2 This is a schematic diagram of the connection structure between the sealing gasket and the valve seat provided by the present invention.

[0024] Figure 3 This is a schematic diagram of the sealing gasket provided by the present invention.

[0025] Figure 4 This is a schematic diagram of the internal structure of the valve seat provided by the present invention.

[0026] Figure 5 This is a schematic diagram of the planar structure of the valve core provided by the present invention.

[0027] Figure 6 This is a schematic diagram illustrating the rotation effect of the valve core provided by the present invention.

[0028] Figure 7 This is a schematic diagram of the chassis structure provided by the present invention.

[0029] Figure 8 This is a schematic diagram of the connection structure between the guide post and the chassis provided by the present invention.

[0030] Figure 9 This is a schematic diagram of the structure of the top of the chassis provided by the present invention.

[0031] Figure 10 This is a schematic diagram of the turntable and its rotation effect provided by the present invention.

[0032] Figure 11 This is a three-dimensional schematic diagram of the valve core provided by the present invention.

[0033] Figure 12 This is a schematic diagram of the unfolded structure of the active block provided by the present invention.

[0034] 1. Valve seat; 2. Valve core; 3. Rotating shaft; 4. Sealing gasket; 5. Water guide pipe; 6. First water guide hole; 7. Spring; 8. Guide post; 9. Collar; 10. Groove; 11. Sealing ring; 12. Connecting end; 13. Second water guide hole; 14. Clamping groove; 15. Movable block; 16. Chassis; 17. Guide groove; 18. Turntable; 19. Push-pull post; 20. Transmission post; 21. Slide groove; 22. Arc groove. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In existing technologies, because the valve core sealing gasket is sandwiched between the valve core and the valve body, its sealing performance gradually declines due to long-term pressure, thus shortening its service life. After prolonged use, it becomes difficult to meet the sealing requirements of the water valve.

[0037] Example 1

[0038] Therefore, in order to solve the above problems, this application proposes a protection mechanism for the valve core sealing gasket of the water valve, see reference. Figure 1 , Figure 5 and Figure 6 The valve includes a valve seat 1, which is a hollow structure. Water guide pipes 5 are inserted through both sides of the valve seat 1, and a valve core 2 is provided inside the valve seat 1. A sealing gasket 4 is provided between the valve core 2 and the water guide pipes 5. The sealing gasket 4 abuts against the surface of the valve core 2. A first water guide hole 6 is opened on one side of the sealing gasket 4 that is in contact with the valve core 2. A second water guide hole 13 is opened on both sides of the valve core 2 and is connected to each other. A third water guide hole is opened at both ends of the water guide pipes 5. A rotating shaft 3 is provided at both ends of the valve core 2 in the length direction. The rotating shaft 3 is an eccentric shaft.

[0039] In practical applications, the first water guide hole 6, which is formed on one side of the sealing gasket 4 and fits against the valve core 2, can be understood as a channel for guiding water flow through the sealing gasket 4. This can be achieved by setting through holes or embedded guide grooves on the sealing gasket 4, for example, by forming a perforated structure with a flow guiding function through a molding process. Its main purpose is to introduce water flow from inside the valve core 2 into the water guide pipe 5, thereby dispersing the pressure borne by the sealing gasket 4. Furthermore, the interconnected second water guide holes 13 on both sides of the valve core 2 can be formed in the form of straight holes or spiral holes. For example, a straight channel can be machined inside the valve core 2 through a mechanical drilling process, or a complex channel structure with a specific flow direction can be formed using casting technology. Its main purpose is to enable water flow along the axial direction of the valve core 2 and to balance the pressure distribution. In addition, the interconnected third water guide holes at both ends of the water guide pipe 5 are mainly for the smooth introduction and exit of water flow from the water guide pipe 5.

[0040] In this embodiment, by setting up an interconnected water guide hole system and an eccentric rotating shaft 3 structure, the water flow pressure is effectively dispersed and the sealing contact point is dynamically adjusted, preventing the performance of the sealing gasket 4 from deteriorating due to long-term fixed pressure. Specifically, when the valve core 2 rotates to close the valve, the eccentric shaft increases the pressure between the sealing gasket 4 and the valve seat 1, improving the pressure on the sealing gasket 4 and thus enhancing the sealing effect of the valve body; when the valve core 2 rotates to open the valve, the eccentric shaft reduces the pressure between the sealing gasket 4 and the valve seat 1, alleviating the pressure on the sealing gasket 4 and extending its service life.

[0041] In a specific implementation, the valve seat 1 has a hollow structure with water guide pipes 5 inserted on both sides, and a valve core 2 is installed inside, providing a basic water flow path and installation space for the valve core 2. A sealing gasket 4 is provided between the valve core 2 and the water guide pipes 5, and the sealing gasket 4 abuts against the surface of the valve core 2 to achieve a basic sealing function to prevent liquid leakage. Further, a first water guide hole 6 is opened on one side of the sealing gasket 4 that fits against the valve core 2, allowing water to flow through the body of the sealing gasket 4; second water guide holes 13 are opened on both sides of the valve core 2, which are connected to the first water guide holes 6 to form a continuous water flow channel, guiding the water flow along the axial direction of the valve core 2, thereby dispersing the pressure distribution; third water guide holes are opened at both ends of the water guide pipes 5, which are connected to the second water guide holes 13, ensuring that the water flow is smoothly introduced and discharged from the water guide pipes 5, maintaining the system pressure balance.

[0042] The valve core 2 has rotating shafts 3 at both ends along its length, and these rotating shafts 3 are eccentric shafts. When the valve core 2 rotates, the eccentric shafts generate eccentric motion, dynamically changing the contact position between the sealing gasket 4 and the valve core 2. Specifically, when the valve core 2 rotates to close the valve, the eccentric shaft increases the pressure between the sealing gasket 4 and the valve seat 1, improving the pressure on the sealing gasket 4 and thus enhancing the sealing effect of the valve body. When the valve core 2 rotates to open the valve, the eccentric shaft reduces the pressure between the sealing gasket 4 and the valve seat 1, alleviating the pressure on the sealing gasket 4. Thus, the mechanical movement of the eccentric shaft achieves the alternation of contact points between the sealing gasket 4 and the valve core 2, preventing long-term pressure on specific areas of the sealing gasket 4 and extending its service life.

[0043] Example 2

[0044] Based on Example 1, further refer to Figures 2-4 The end of the water guide pipe 5 that passes through the valve seat 1 is the mating end 12. The sealing gasket 4 is provided with a collar 9 that matches the mating end 12. The mating end 12 is inclined. This inclined design of the mating end 12 not only facilitates the insertion of the water guide pipe 5, but also creates a certain self-locking effect after the water guide pipe 5 is inserted, preventing it from falling off during use. At the same time, the collar 9 further enhances the sealing performance between the sealing gasket 4 and the water guide pipe 5, preventing liquid leakage.

[0045] Specifically, the mating end 12 is the part that guides the water pipe 5 into the valve seat 1 and into contact with the sealing gasket 4. It can be designed in a conical or wedge shape. The purpose of this design is to distribute the contact pressure through the inclined surface and avoid local stress concentration. The collar 9 is a structure on the sealing gasket 4 that mates with the mating end 12. It can be made of elastic material to enhance the sealing performance and provide a certain locking force. The inclined mating end 12 can gradually open the collar 9 during insertion, thereby forming a uniform pressure distribution.

[0046] In some embodiments, see Figure 3 The surface of the collar 9 is provided with grooves 10 distributed around its circumference, and a sealing ring 11 is fitted inside the grooves 10.

[0047] Specifically, the groove 10 refers to the annular groove structure provided along the circumferential direction on the surface of the collar 9, which can be achieved by machining, injection molding, or laser cutting. The sealing ring 11 is an elastic annular sealing element, and its material can be rubber, silicone, or other materials with good elasticity and corrosion resistance. Its purpose is to fill tiny gaps through elastic deformation, thereby enhancing the sealing performance.

[0048] In detail, the collar 9 provides a continuous and balanced support base for the sealing ring 11, effectively avoiding local stress concentration caused by the tilt of the mating end 12. After the sealing ring 11 is precisely embedded in the groove 10, its elastic properties dynamically compensate for the assembly deviation between the mating end 12 and the collar 9 during the operation of the valve core 2.

[0049] Furthermore, a spring 7 is fitted onto the collar 9, with its two ends along its length abutting against the inner walls of the sealing gasket 4 and the valve seat 1, respectively. The spring 7 creates an elastic buffer mechanism between the collar 9 and the sealing gasket 4. One end of the spring 7 acts directly on the surface of the sealing gasket 4, ensuring that the sealing gasket 4 always adheres to the surface of the valve core 2 to maintain a sealed contact; the other end abuts against the inner wall of the valve seat 1, forming a stable fulcrum. When the valve core 2 rotates or water pressure fluctuates, the spring 7 can automatically adjust its force according to the change in the tilt angle of the mating end 12, thereby preventing the sealing gasket 4 from bearing uneven pressure due to a rigid fixed connection.

[0050] Example 3

[0051] Based on Embodiment 1, due to the setting of the eccentric rotating shaft 3, in order for the valve core 2 to rotate smoothly, it is necessary to reserve rotation space for it. When the valve core 2 rotates to the position of pressing the sealing gasket 4, there will be gaps between the other positions of the valve core 2 and the inner wall of the valve seat 1. At this time, the water introduced from the other end of the water guide pipe 5 into the valve seat 1 may flow into the gap between the sealing gasket 4 and the valve core 2 through these gaps, resulting in the risk of leakage.

[0052] Therefore, in order to solve the above problems, please refer to [further details]. Figures 7-10 The valve core 2 has a base plate 16 at its bottom, which fits against the inner bottom wall of the valve seat 1 and is sleeved on the rotating shaft 3. The base plate 16 provides stable support for the valve core 2. Simultaneously, a guide groove 17 is formed on the bottom surface of the base plate 16, which extends through the base plate 16 and is distributed along the rotation direction of the rotating shaft 3. Furthermore, guide posts 8 corresponding to the guide groove 17 are provided on the inner bottom wall of the valve seat 1. The cooperation between the guide posts 8 and the guide groove 17 ensures that the valve core 2 maintains a stable trajectory during rotation, preventing deviation or jamming during rotation.

[0053] In addition, a turntable 18 is provided on the top of the chassis 16, which is movably mounted on the rotating shaft 3. A guide post 8 passes through a guide groove 17 and connects to the bottom of the turntable 18, allowing the turntable 18 to rotate synchronously with the valve core 2. Simultaneously, sliding grooves 21 are provided on both sides of the top of the chassis 16, with push-pull posts 19 fitted inside the grooves 21. Each of the two push-pull posts 19 has a transmission post 20 at its top, facing one end, and the top of the push-pull post 19 is in contact with the bottom of the turntable 18. An arc-shaped groove 22 is provided on the top surface of the turntable 18, and the transmission post 20 passes through the arc-shaped groove 22.

[0054] Specifically, the arc-shaped groove 22 refers to a groove 10 structure with a specific curvature, which can be implemented using circular arc or elliptical grooves with different radii of curvature. Its purpose is to restrict the degrees of freedom of the transmission column 20 through geometric constraints and avoid random sliding.

[0055] For further details, please refer to [link / reference]. Figures 11-12 The push-pull column 19 is provided with a movable block 15 at one end away from the transmission column 20, and the movable block 15 extends along the length direction of the valve core 2.

[0056] When the turntable 18 rotates, the wall of the arc-shaped groove 22 pushes the transmission column 20 to move, which in turn drives the push-pull column 19 to extend and retract within the slide groove 21. A movable block 15 is provided at the end of the push-pull column 19 away from the transmission column 20, and this movable block 15 extends along the length of the valve core 2. A clamping groove 14 adapted to the movable block 15 is formed on the surface of the valve core 2, and the end of the movable block 15 has an arc-shaped structure. This design allows the movable block 15 to pass through or retract into the clamping groove 14 under the action of the push-pull column 19, thereby filling the space between the valve core 2 and the inner wall of the valve seat 1.

[0057] For example, when the valve body needs to be closed, rotating the valve core 2 causes the turntable 18 to rotate along with it. At this time, with the cooperation of the push-pull column 19 and the arc-shaped groove 22, the movable block 15 protrudes from the clamping groove 14 until it abuts against the inner wall of the valve seat 1, filling the gap between the valve core 2 and the inner wall of the valve seat 1. This helps prevent water from flowing through the gap into the space between the sealing gasket 4 and the valve core 2, further enhancing the sealing performance of the water valve. Simultaneously, because the end of the movable block 15 has an arc-shaped structure, this design not only reduces the friction between the movable block 15 and the inner wall of the valve seat 1, making the movement of the movable block 15 smoother, but also avoids damage to the sealing gasket 4 or the inner wall of the valve seat 1 that may be caused by sharp edges, extending the service life of the water valve.

[0058] Specifically, the movable block 15 refers to a movable structural component, which can be made of metal or high-strength plastic and has a certain degree of rigidity and wear resistance. The purpose of the movable block 15 is to fill the gap generated when the valve core 2 rotates by contacting the inner wall of the valve seat 1, thereby enhancing the sealing performance. The groove 14 refers to the groove structure opened on the surface of the valve core 2 to accommodate the movable block 15. It can be implemented by using a rectangular groove, a trapezoidal groove, or other grooves with suitable shapes. Its purpose is to provide a stable accommodating space for the movable block 15, while ensuring that the movable block 15 remains flat with the surface of the valve core 2 when it is not extended.

[0059] Subsequently, when it is necessary to open the valve body, the valve core 2 is rotated in the opposite direction, so that the movable block 15 will gradually retract into the clamping groove 14 under the action of the push-pull column 19.

[0060] It should be noted that the clamping groove 14 is located on the side close to the second water guide hole 13, and in the initial state, the edge of the movable block 15 coincides with the surface of the valve core 2. This design ensures that when the movable block 15 retracts into the clamping groove 14, it will not affect the rotation of the valve core 2, thus maintaining the flatness of the valve core 2 surface in the initial state.

[0061] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A protective mechanism for a water valve core sealing gasket, comprising a valve seat (1), wherein the valve seat (1) is a hollow structure, water guide pipes (5) are respectively inserted on both sides of the valve seat (1), and a valve core (2) is provided inside the valve seat (1), wherein a sealing gasket (4) is provided between the valve core (2) and the water guide pipes (5), and the sealing gasket (4) abuts against the surface of the valve core (2), characterized in that, The sealing gasket (4) is attached to one side of the valve core (2) and has a first water guide hole (6). The valve core (2) has a second water guide hole (13) that is interconnected on both sides. The water guide pipe (5) has a third water guide hole that is interconnected at both ends. The valve core (2) is provided with a rotating shaft (3) at both ends in the length direction, and the rotating shaft (3) is an eccentric shaft; The bottom of the valve core (2) is provided with a base plate (16), which is attached to the bottom inner wall of the valve seat (1) and sleeved on the rotating shaft (3). The bottom surface of the base plate (16) is provided with a guide groove (17), which passes through the base plate (16) and is distributed along the rotation direction of the rotating shaft (3). The bottom inner wall of the valve seat (1) is provided with a guide post (8) corresponding to the guide groove (17). The top of the chassis (16) is provided with a turntable (18), which is movably sleeved on the rotating shaft (3), wherein the guide post (8) passes through the guide groove (17) and is connected to the bottom of the turntable (18); The top of the chassis (16) is provided with sliding grooves (21) on both sides. Push-pull columns (19) are fitted inside the sliding grooves (21). The tops of the two push-pull columns (19) facing one end are provided with transmission columns (20), and the tops of the push-pull columns (19) are in contact with the bottom of the turntable (18). The top surface of the turntable (18) is provided with an arc-shaped groove (22), and the transmission column (20) passes through the inside of the arc-shaped groove (22).

2. The protective mechanism for the water valve core sealing gasket according to claim 1, characterized in that, The end of the water pipe (5) inserted into the valve seat (1) is the docking end (12). The sealing gasket (4) is provided with a collar (9) that is compatible with the docking end (12). The docking end (12) is set at an angle.

3. The protective mechanism for the water valve core sealing gasket according to claim 2, characterized in that, The surface of the collar (9) is provided with grooves (10) distributed around its circumference, and a sealing ring (11) is fitted inside the grooves (10).

4. The protective mechanism for the water valve core sealing gasket according to claim 3, characterized in that, A spring (7) is fitted on the collar (9), and the two ends of the spring (7) in the length direction respectively abut against the inner wall of the sealing gasket (4) and the valve seat (1).

5. The protective mechanism for the water valve core sealing gasket according to claim 4, characterized in that, The push-pull column (19) has a movable block (15) at one end away from the transmission column (20), and the movable block (15) extends along the length direction of the valve core (2).

6. The protective mechanism for the water valve core sealing gasket according to claim 5, characterized in that, The valve core (2) has a groove (14) on its surface that is compatible with the movable block (15), and the end of the movable block (15) is an arc-shaped structure.

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