Ball valve seat

Abstract

The utility model relates to the technical field of ball valve seats, and discloses a ball valve seat which comprises a valve body, a ball valve body is arranged in the valve body, an installation seat is arranged in the valve body, a valve seat shell is fixedly connected to the side wall of the installation seat, a sealing ring is connected to the interior of the valve seat shell in a sliding mode, an elastic assembly is arranged in the valve seat shell, and the sealing ring is connected to the interior of the elastic assembly in a sliding mode. A fixing assembly is arranged in the mounting seat, the elastic assembly comprises a fixing seat, the side wall of the fixing seat is fixedly connected to the interior of the valve seat shell, a fixing rod is fixedly connected to the interior of the fixing seat, a fixing sleeve is fixedly connected to the interior of the fixing seat, and one end of the fixing rod is fixedly connected to the side wall of the fixing sleeve. According to the ball valve, the third spring is extruded through the first fixing block, meanwhile, the second rotating strip pushes the sliding block 11 to slide to extrude the first spring, and therefore the sealing ring is always kept to abut against and be released from the surface of the ball valve body in a sealed mode, the service life of the sealing ring is prolonged through the structure, and meanwhile the sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valve seats, in particular to a ball valve seat. Background Art

[0002] Ball valves are widely used in a variety of industrial and civilian applications, as fluid control devices. Their valve seats play a crucial role in the valve's performance. The valve seat closely mates with the valve ball, achieving a seal through the sealing ring, thereby accurately controlling the flow of fluid. In various piping systems, whether conveying water, oil, or gas, ball valves are widely used due to their ease of operation and excellent sealing properties. As a key component ensuring the sealing performance of ball valves, the valve seat has been the focus of continuous research and improvement in its structure and performance.

[0003] A traditional ball valve seat typically consists of a seat body and a sealing ring installed in a specific position within it. The seat body is generally made of metal and possesses sufficient strength to withstand fluid pressure and the forces acting on the valve ball. The sealing ring is often made of elastic materials such as rubber, leveraging its excellent elastic deformation capabilities. When the ball valve is closed, the sealing ring closely fits against the surface of the valve ball to achieve a sealing effect. Installation typically involves embedding the sealing ring into a pre-set sealing groove on the valve seat. Through the mechanical fit between the valve seat and the valve ball, the valve ball applies a certain amount of pressure to the sealing ring during the closing process, causing it to elastically deform, thereby filling any small gap between the two and preventing media leakage.

[0004] The traditional ball valve seat sealing ring will age and lose its elasticity after long-term use, and coupled with wear, the sealing ring will not be able to achieve the sealing effect when in contact with the valve ball surface, thereby reducing the sealing performance of the valve seat. Therefore, a ball valve seat is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a ball valve seat, which aims to improve the problem in the prior art that the sealing ring will age and lose its elasticity after long-term use, and coupled with wear, the sealing ring and the valve ball surface will not be able to achieve a sealing effect, thereby reducing the sealing performance of the valve seat.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A ball valve seat, comprising a valve body, a ball valve body disposed inside the valve body, a mounting seat disposed inside the valve body, a valve seat shell fixedly connected to a side wall of the mounting seat, a sealing ring slidably connected inside the valve seat shell, an elastic component disposed inside the valve seat shell, and a fixing component disposed inside the mounting seat;

[0008] The elastic component includes a fixed seat, the side wall of the fixed seat is fixedly connected to the inside of the valve seat shell, the fixed seat is fixedly connected to a fixed rod, the fixed seat is fixedly connected to a fixed sleeve, one end of the fixed rod is fixedly connected to the side wall of the fixed sleeve, the fixed sleeve is fixedly connected to a third spring, one end of the third spring is fixedly connected to a fixed block 1, one end of the fixed block 1 is fixedly connected to the side wall of the sealing ring, the side wall of the fixed rod is slidably connected to a slider, the side wall of the fixed rod is sleeved with a first spring, the side wall of the slider is rotatably connected to a rotating bar 2, and one end of the rotating bar 2 is rotatably connected to the side wall of the sealing ring;

[0009] As a further description of the above technical solution:

[0010] The fixing assembly includes a mounting shell, a side wall of which is slidably connected to the interior of the mounting seat, and a side wall of which is slidably connected to the interior of the valve body;

[0011] As a further description of the above technical solution:

[0012] One end of the first spring is fixedly connected to the side wall of the fixing rod, and the other end of the first spring is fixedly connected to the side wall of the slider;

[0013] As a further description of the above technical solution:

[0014] A rotating column is rotatably connected inside the mounting shell, and one end of the rotating column is fixedly connected to a connecting block;

[0015] As a further description of the above technical solution:

[0016] The side wall of the rotating column is fixedly connected to a fixing ring, and the side wall of the fixing ring is fixedly connected to a second fixing block;

[0017] As a further description of the above technical solution:

[0018] The mounting shell is internally slidably connected with a clamping block, and a second spring is provided between the clamping blocks;

[0019] As a further description of the above technical solution:

[0020] The side wall of the clamping block is slidably connected to the inside of the valve body, and the upper surface of the clamping block is fixedly connected to a fixing block three;

[0021] As a further description of the above technical solution:

[0022] The second side wall of the fixed block is rotatably connected to a rotating bar 1, and one end of the rotating bar 1 is rotatably connected to the third side wall of the fixed block.

[0023] The utility model has the following beneficial effects:

[0024] 1. In the utility model, the third spring is squeezed by the fixed block 1, and at the same time, the rotating bar 2 pushes the slider 11 to slide and squeeze the first spring, so that the sealing ring always maintains a sealing contact with the surface of the ball valve body, which solves the problem that the sealing ring of the valve seat of some ball valves will age and lose its elasticity after long-term use, and the wear and tear will cause the sealing ring to contact with the valve ball surface and fail to achieve a sealing effect, thereby reducing the sealing performance of the valve seat. The above structure prolongs the service life of the sealing ring and improves the sealing effect at the same time.

[0025] 2. In the present invention, by rotating the rotating column, the fixed ring drives the rotating bar to rotate, and then the clamping block slides into the interior of the mounting shell, thereby achieving the effect of facilitating the rapid installation and disassembly of the valve seat shell, thereby making the maintenance of the valve seat more timely and convenient, thereby extending the service life of the entire ball valve equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional schematic diagram of a ball valve seat proposed by the utility model;

[0027] Figure 2 This is a structural schematic diagram of a valve body of a ball valve seat proposed by the utility model;

[0028] Figure 3 This is a structural schematic diagram of a valve seat shell of a ball valve seat proposed by the utility model;

[0029] Figure 4 This is a schematic diagram of the structure inside the valve seat shell of a ball valve seat proposed by the utility model;

[0030] Figure 5 This is a structural schematic diagram of a mounting shell for a ball valve seat proposed by the utility model.

[0031] Legend:

[0032] 1. Valve body; 2. Ball valve body; 3. Mounting seat; 4. Valve seat shell; 5. Sealing ring; 6. Fixed seat; 7. Fixed rod; 8. Fixed sleeve; 9. Fixed block 1; 10. First spring; 11. Slider; 12. Mounting shell; 13. Rotating column; 14. Connecting block; 15. Clamping block; 16. Second spring; 17. Fixed ring; 18. Fixed block 2; 19. Rotating bar 1; 20. Fixed block 3; 21. Third spring; 22. Rotating bar 2. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4, the utility model provides an embodiment: a ball valve seat, including a valve body 1, a ball valve body 2 is arranged inside the valve body 1, a mounting seat 3 is arranged inside the valve body 1, and a valve seat shell 4 is fixedly connected to the side wall of the mounting seat 3. The valve seat shell 4 mainly provides a closed and relatively stable accommodating space for the internal sealing ring 5 and related elastic components. The sealing ring 5 is slidably connected to the inside of the valve seat shell 4. The sealing ring 5 uses its own good elastic deformation ability to fit tightly with the surface of the ball valve body 2 when the ball valve is closed, effectively filling the possible small gaps between the ball valve body 2 and the valve seat, thereby preventing the fluid medium from leaking from these gaps. An elastic component is arranged inside the valve seat shell 4. The elastic component can automatically make adaptive adjustments according to the different working conditions of the ball valve and the relative movement between the various components, so as to always maintain a good sealing contact state between the sealing ring 5 and the ball valve body 2. The elastic component includes a fixed seat 6, the side wall of the fixed seat 6 is fixedly connected to the inside of the valve seat shell 4, the fixed seat 6 is fixedly connected to a fixed rod 7, and the fixed seat 6 is fixedly connected to a fixed sleeve 8. The fixed sleeve 8 provides a fixed installation space for the third spring 21, so that the third spring 21 can be stably installed therein, and can be stretched and deformed in a predetermined direction when subjected to external force, thereby realizing its elastic force transmission and adjustment function in the elastic component. One end of the fixing rod 7 is fixedly connected to the side wall of the fixing sleeve 8, further strengthening the connection stability between the fixing rod 7 and the fixing sleeve 8. A third spring 21 is fixedly connected to the inside of the fixing sleeve 8, and one end of the third spring 21 is fixedly connected to a fixing block 9. The fixing block 9 acts as a bridge connecting the third spring 21 and the sealing ring 5. It can accurately transmit the elastic force of the third spring 21 to the sealing ring 5, so that the sealing ring 5 can make corresponding displacement and deformation according to the expansion and contraction of the third spring 21, ensuring that the sealing contact state between the sealing ring 5 and the surface of the ball valve body 2 is maintained. One end of the fixed block 19 is fixedly connected to the side wall of the sealing ring 5. The side wall of the fixed rod 7 is slidably connected to a slider 11. The slider 11 can slide on the side wall of the fixed rod 7. The side wall of the fixed rod 7 is equipped with a first spring 10. The side wall of the slider 11 is rotatably connected to a rotating bar 22. One end of the rotating bar 22 is rotatably connected to the side wall of the sealing ring 5. This realizes the transition from the sliding movement of the slider 11 to the pushing effect of the sealing ring 5, ensuring that the sliding movement of the slider 11 can be accurately converted into pushing the sealing ring 5, thereby maintaining the sealing contact state between the sealing ring 5 and the surface of the ball valve body 2. One end of the first spring 10 is fixedly connected to the side wall of the fixed rod 7, ensuring that the first spring 10 is fixedly installed on the side wall of the fixed rod 7, allowing it to expand and contract in a predetermined manner under the corresponding working state, providing stable elastic support for the sealing ring 5.The other side of the first spring 10 is fixedly connected to the side wall of the slider 11, thereby establishing a direct connection relationship between the slider 11 and the first spring 10, so that the sliding movement of the slider 11 can directly affect the expansion and contraction state of the first spring 10, and then affect the sealing state of the sealing ring 5 through the elastic force of the first spring 10;.

[0035] During operation, when the ball valve body 2 rotates, it comes into direct contact with the sealing ring 5, squeezing it. The sealing ring 5, a key component for ensuring the tightness of the ball valve seat, primarily functions by maintaining a tight fit against the surface of the ball valve body 2, effectively preventing leakage of fluid from the gap between them, thanks to its excellent elastic deformation capability. When squeezed by the ball valve body 2, the sealing ring 5 deforms accordingly. This deformation pushes the attached fixing block 9 backward. One end of the fixing block 9 is fixedly attached to the sidewall of the sealing ring 5, serving the crucial role of connecting the sealing ring 5 to the third spring 21. This accurately transmits the squeezing force exerted on the sealing ring 5 by the ball valve body 2 to the third spring 21, enabling the third spring 21 to sense this external force and respond accordingly. As the fixing block 9 moves backward, it compresses the third spring 21. When squeezed by the fixed block 19, the third spring 21 will be compressed. At the same time, when the sealing ring 5 is squeezed and deformed by the ball valve body 2, the rotating bar 22 will also rotate. As the rotating bar 22 rotates, it will push the slider 11 to slide on the side wall of the fixed rod 7. When the slider 11 is pushed to slide, it will squeeze the first spring 10 sleeved on the side wall of the fixed rod 7. The elastic force generated by the first spring 10 and the third spring 21 will act together on the sealing ring 5. This elastic force ensures that the side wall of the sealing ring 5 is always in contact with the ball valve body 2. Even if the sealing ring 5 is continuously squeezed and rubbed during the rotation of the ball valve body 2, the elastic force of the spring can compensate, ensuring that the sealing ring 5 always maintains a good sealing contact state, thereby improving the sealing effect, effectively preventing the valve body 1 from leaking fluid media, and ensuring the sealing and reliability of the entire ball valve equipment during operation. Moreover, through the action of this spring elastic force, the sealing ring 5 can, to a certain extent, buffer and disperse the pressure exerted on the sealing ring 5 by the ball valve body 2 when it rotates during the contact process with the ball valve body 2, thereby reducing the direct wear of the sealing ring 5 when the ball valve body 2 is rotated, and extending the service life of the sealing ring 5, thereby reducing the impact of maintenance work such as frequent replacement of the sealing ring 5 on the normal operation of the entire ball valve equipment, and further improving the operating stability and economy of the equipment.

[0036] Reference Figure 3 and Figure 5The fixed assembly includes a mounting shell 12, the side walls of which are slidably connected to the inside of the mounting seat 3 and the inside of the valve body 1. Its main function is to provide a relatively stable installation space for other components in the fixed assembly that can be adjusted to a certain displacement. A rotating column 13 is rotatably connected to the inside of the mounting shell 12, and the rotating column 13 can rotate around its own axis inside the mounting shell 12. A connecting block 14 is fixedly connected to one end of the rotating column 13. The connecting block 14 is fixedly connected to the rotating column 13 so as to accurately transmit the force or movement generated by the rotating column 13 during the rotation process to other components connected thereto. A fixing ring 17 is fixedly connected to the side wall of the rotating column 13, and a fixing block 2 18 is fixedly connected to the side wall of the fixing ring 17. The fixing block 2 18 obtains a relatively stable position and movement basis by being connected to the fixing ring 17 on the rotating column 13. At the same time, it is rotatably connected to the rotating bar 19, and can further transmit the force or movement transmitted from the rotating column 13 to other related components through the rotating bar 19, ensuring that the force and movement between the various components can be transmitted and converted in a predetermined manner, thereby effectively fixing the related components of the ball valve seat. A clamping block 15 is slidably connected to the interior of the mounting shell 12. The clamping block 15 can slide inside the mounting shell 12. A second spring 16 is provided between the clamping blocks 15. The side wall of the clamping block 15 is slidably connected to the interior of the valve body 1. Through this sliding connection, the clamping block 15 can control the position of the mounting shell 12 inside the valve body 1 based on its own sliding position and the coordination with the internal structure of the valve body 1. The upper surface of the clamping block 15 is fixedly connected to the fixed block 3 20. The side wall of the fixed block 2 18 is rotatably connected to the rotating bar 19. The rotating bar 19 can transmit the movement or force of the fixed block 2 18 to the fixed block 3 20 through its own rotation. One end of the rotating bar 19 is rotatably connected to the side wall of the fixed block 3 20, thereby completing the complete force and motion transmission path from the fixed block 2 18 through the rotating bar 19 to the fixed block 3 20, so that the movement of the fixed block 2 18 can be accurately transmitted to the fixed block 3 20, and then through the connection relationship between the fixed block 3 20 and the clamping block 15, the motion state of the clamping block 15 is affected, and finally the position of the entire fixed assembly in the valve body 1 is controlled and the relevant components of the ball valve seat are effectively fixed.

[0037] When the valve seat shell 4 needs to be removed, the valve body 1 is first opened, and then the rotating column 13 is rotated to drive the fixing ring 17 to rotate, so that the rotating bar 19 is rotated. The rotating bar 19 is a connecting component. Its main function is to convert the rotational movement of the fixing ring 17 into a pushing force on the fixing block 3 20 through its own rotation, thereby realizing the force and motion transmission link from the fixing ring 17 to the fixing block 3 20, ensuring that the various components can work together, and then the block 15 is separated from the inside of the valve body 1 and enters the inside of the mounting shell 12. The side wall of the block 15 is slidably connected to the inside of the valve body 1. Under normal working conditions, it cooperates with the specific structure inside the valve body 1 to lock the position of the mounting shell 12 inside the valve body 1, ensuring that the mounting shell 12 and the entire fixing assembly are in a stable installation position. During the disassembly process, when the clamping block 15 is pushed away from the interior of the valve body 1 and enters the interior of the mounting shell 12 under the push of the rotating bar 19, the locking restriction on the mounting shell 12 is released, allowing the mounting shell 12 to be smoothly removed from the interior of the valve body 1 and compressing the second spring 16. Under normal circumstances, the second spring 16 is in a certain expansion and contraction state, allowing the clamping block 15 to maintain a relatively stable position inside the mounting shell 12. When the clamping block 15 moves into the interior of the mounting shell 12 under the push of the rotating bar 19, it compresses the second spring 16, then the mounting shell 12 can be removed. When the clamping block 15 is freed from the locking of the interior of the valve body 1, the mounting shell 12 can be smoothly removed from the interior of the valve body 1, thereby completing the disassembly steps of the fixing components related to the valve seat shell 4, thereby achieving the installation and disassembly effect of the valve seat shell 4, allowing the valve seat shell 4 to be easily removed from the interior of the valve body 1, facilitating the inspection, maintenance, and replacement of the valve seat shell 4 or its internal components, and ensuring the maintainability of the entire ball valve seat and the normal operation of the equipment.

[0038] Working principle: When the device is used for work, when the ball valve body 2 is rotated, the rotation of the ball valve body 2 will squeeze the sealing ring 5, thereby pushing the fixed block 9 to move backward and squeezing the third spring 21. At the same time, the rotating bar 22 will also rotate, pushing the slider 11 to squeeze the first spring 10. The elastic force generated will make the side wall of the sealing ring 5 always fit with the ball valve body 2, thereby improving the sealing effect and preventing the valve body 1 from leaking. At the same time, it reduces the wear of the sealing ring 5 when the ball valve body 2 is rotated. When the valve seat shell 4 needs to be disassembled, the valve body 1 is first opened, and then the rotating column 13 is rotated to drive the fixing ring 17 to rotate, so that the rotating bar 19 is rotated, and then the block 15 is separated from the inside of the valve body 1 and enters the inside of the mounting shell 12, squeezing the second spring 16. At this time, the mounting shell 12 can be removed, thereby achieving the installation and disassembly effect of the valve seat shell 4.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ball valve seat, comprising a valve body (1), characterized in that: A ball valve body (2) is provided inside the valve body (1), a mounting seat (3) is provided inside the valve body (1), a side wall of the mounting seat (3) is fixedly connected to a valve seat shell (4), a sealing ring (5) is slidably connected inside the valve seat shell (4), an elastic component is provided inside the valve seat shell (4), and a fixed component is provided inside the mounting seat (3); The elastic component includes a fixed seat (6), the side wall of the fixed seat (6) is fixedly connected to the inside of the valve seat shell (4), the fixed seat (6) is fixedly connected to a fixed rod (7), the fixed seat (6) is fixedly connected to a fixed sleeve (8), one end of the fixed rod (7) is fixedly connected to the side wall of the fixed sleeve (8), the fixed sleeve (8) is fixedly connected to a third spring (21), one end of the third spring (21) is fixedly connected to a fixed block (9), one end of the fixed block (9) is fixedly connected to the side wall of the sealing ring (5), the side wall of the fixed rod (7) is slidably connected to a slider (11), the side wall of the fixed rod (7) is provided with a first spring (10), the side wall of the slider (11) is rotatably connected to a rotating bar (22), and one end of the rotating bar (22) is rotatably connected to the side wall of the sealing ring (5).

2. A ball valve seat according to claim 1, characterized in that: The fixing assembly comprises a mounting shell (12), the side wall of the mounting shell (12) being slidably connected to the interior of the mounting seat (3), and the side wall of the mounting shell (12) being slidably connected to the interior of the valve body (1).

3. The ball valve seat according to claim 1, characterized in that: One end of the first spring (10) is fixedly connected to the side wall of the fixing rod (7), and the other end of the first spring (10) is fixedly connected to the side wall of the slider (11).

4. A ball valve seat according to claim 2, characterized in that: A rotating column (13) is rotatably connected inside the mounting shell (12), and one end of the rotating column (13) is fixedly connected to a connecting block (14).

5. The ball valve seat according to claim 4, characterized in that: The side wall of the rotating column (13) is fixedly connected with a fixing ring (17), and the side wall of the fixing ring (17) is fixedly connected with a fixing block 2 (18).

6. A ball valve seat according to claim 5, characterized in that: A clamping block (15) is slidably connected inside the mounting shell (12), and a second spring (16) is provided between the clamping blocks (15).

7. The ball valve seat according to claim 6, characterized in that: The side wall of the clamping block (15) is slidably connected to the interior of the valve body (1), and a fixed block three (20) is fixedly connected to the upper surface of the clamping block (15).

8. The ball valve seat according to claim 7, characterized in that: The side wall of the second fixed block (18) is rotatably connected to a rotating bar (19), and one end of the rotating bar (19) is rotatably connected to the side wall of the third fixed block (20).

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