A novel ball valve structure

Abstract

This utility model relates to the field of valve structure technology and discloses a novel ball valve structure, comprising: an assembly assembly including a first pair of split rings and a second pair of split rings, a connector, and a stop block; the first and second pair of split rings are symmetrically assembled to form an annular structure; a valve body, with the annular structure nested inside the valve body; a ball, disposed within the valve body and abutting against the valve body via the assembly assembly; a disc spring is provided between the annular structure and the ball, abutting against the assembly assembly, and the sealing force is adjusted by compressing or releasing the disc spring through the annular structure. This improves assembly efficiency and maintenance convenience, eliminating the need for complex forced squeezing or friction during assembly, reducing the risk of waterline scraping, and avoiding localized waterline deformation caused by component misalignment. The sealing force is adjusted by compressing and releasing the disc spring, making the sealing performance adjustable and reliable, effectively improving the sealing adaptability and service life of the ball valve.

Description

Technical Field

[0001] This utility model relates to the field of valve structure technology, specifically to a novel ball valve structure. Background Technology

[0002] In the field of valve technology, V-type ball valves are widely used in industrial applications, and their production assembly efficiency and cost control are key requirements. However, the core assembly structure of existing V-type ball valves is complex to manufacture, requiring multiple precision machining processes, which places high demands on equipment and technology. Furthermore, the complexity of the structure can easily lead to high costs, making it difficult to meet the actual needs of production efficiency and cost control.

[0003] Sealing performance is a core indicator of V-type ball valves, directly affecting their stability and safety during use. Existing V-type ball valves have significant sealing defects, easily damaging the valve's waterline during assembly or use, and have insufficient sealing surface area. Furthermore, the sealing force between the valve body and the ball lacks a convenient and precise adjustment method, ultimately leading to excessive media leakage and failing to meet the high sealing requirements of industrial applications. Utility Model Content

[0004] In view of this, the present invention provides a novel ball valve structure to solve the problems of ball valves easily damaging the valve water line and large media leakage.

[0005] This utility model provides a novel ball valve structure, including:

[0006] The assembly assembly includes a first pair of open rings and a second pair of open rings, a connector, and a stop; the first pair of open rings and the second pair of open rings are symmetrically assembled to form a ring structure.

[0007] The valve body has an annular structure nested inside it, with the inner walls of the first pair of open rings and the second pair of open rings fitting the outer wall of the valve body.

[0008] The ball is located inside the valve body and abuts against the valve body via an assembly component.

[0009] A disc spring is provided between the annular structure and the sphere. The disc spring abuts against the assembly component. The sealing force is adjusted by compressing or releasing the disc spring through the annular structure.

[0010] Beneficial effects: The annular structure formed by the symmetrical assembly of the first and second pair of open rings simplifies the assembly structure between the valve body and the ball, significantly improving assembly efficiency and maintenance convenience. The open ring structure itself is simple, eliminating the need for complex forced squeezing or friction during assembly, reducing the risk of waterline scraping. The cooperation between the stop block and the open rings limits the assembly position, preventing local squeezing and deformation of the waterline caused by component misalignment. The entire waterline area participates in the sealing between the ball and the assembly components. Compared with traditional structures that damage the waterline, the effective sealing surface area is preserved or even increased. The design nested within the valve body enhances the overall structural integrity. The sealing force is adjusted by the compression and release of the disc spring, making the sealing performance adjustable and reliable. Stable and suitable compression allows the sealing surfaces of the ball and the assembly components to fully fit together, avoiding the problem of local non-contact sealing surfaces caused by uneven pressure, effectively improving the sealing adaptability and service life of the ball valve.

[0011] In one alternative embodiment, the assembly assembly further includes a connector through which a second pair of open rings pass, and the assembly assembly further includes a stop fixed to the axial end of the annular structure.

[0012] Beneficial effects: The connector enables reliable connection and fixation of the ring structure, ensuring its stability; the stop block is located at the axial end, providing stable support and force transmission path for the disc spring, ensuring the axial positioning accuracy and force transmission efficiency of the sealing force adjustment structure.

[0013] In one alternative embodiment, the connector is a screw, and the second pair of open rings has threaded holes adapted to the screw. The screw passes through the threaded holes and engages with them. By adjusting the screw's screwing depth, the axial force of the ring structure on the stop block is changed.

[0014] Beneficial effects: By using screws and threaded holes, the axial force of the annular structure on the stop can be precisely adjusted through simple screwing, thereby achieving fine adjustment of the disc spring compression and accurately controlling the sealing force, which improves the controllability and ease of operation of the ball valve's sealing performance.

[0015] In one alternative embodiment, there are multiple disc springs, which are evenly spaced along the circumference of the annular structure. One end of each disc spring abuts against the stop block, and the other end abuts against the ball.

[0016] Beneficial effects: The circumferentially evenly arranged disc springs make the sealing force on the ball more evenly distributed, avoiding local stress concentration, significantly improving the reliability and stability of the seal, and enhancing the alignment between the valve body and the ball, which helps to extend the service life of the valve.

[0017] In one alternative embodiment, the number of screws is at least two, and they are evenly spaced along the circumference of the second pair of open rings, with each screw corresponding to a threaded hole on the second pair of open rings.

[0018] Beneficial effects: Using at least two screws evenly spaced around the circumference ensures uniform force distribution on the second pair of open rings, avoiding deformation or loosening caused by single-point force distribution. This further enhances the connection rigidity and overall stability of the ring structure, ensuring the uniformity and reliability of the sealing force adjustment.

[0019] In one optional embodiment, the stop is an annular plate structure, the inner diameter of the stop is larger than the maximum outer diameter of the sphere, and the axial end faces of the stop are respectively attached to the axial end faces of the second pair of open rings and the disc spring.

[0020] Beneficial effects: The annular plate-shaped stop block has a simple structure, is easy to process and install; its inner diameter is larger than the maximum outer diameter of the ball, avoiding interference with the movement of the ball; the two end faces are respectively in contact with the split ring and the disc spring, ensuring the effective and smooth transmission of axial force and improving the sealing response performance of the structure.

[0021] In one alternative embodiment, an annular boss is also provided on the outer side of the sphere. One end of the disc spring abuts against the stop block, and the other end abuts against the annular boss. By changing the degree of compression of the disc spring by the annular structure, the pressure of the disc spring on the annular boss can be controlled.

[0022] Beneficial effects: The annular boss provides a clear stress point for the disc spring, allowing the pressure of the disc spring to act directly and effectively on the sphere, thus optimizing the force transmission path; by adjusting the compression of the disc spring to control the pressure on the boss, linear and reliable adjustment of the sealing force is achieved.

[0023] In one alternative embodiment, the sealing surface where the sphere contacts the annular boss is an arc-shaped sealing surface, and the radius of curvature of the arc-shaped sealing surface is adapted to the radius of curvature of the outer circle of the sphere.

[0024] Beneficial effects: The arc-shaped sealing surface matches the outer curvature of the sphere, significantly increasing the sealing contact area and improving the sealing fit, thereby effectively enhancing the reliability and durability of the sealing performance and reducing the risk of leakage.

[0025] In one optional embodiment, at least one annular sealing groove is provided on the arc-shaped sealing surface, and an elastic sealing element is embedded in the annular sealing groove. The radially outer side of the elastic sealing element protrudes from the surface of the arc-shaped sealing surface, and the elastic sealing element is interference-fitted with the annular boss.

[0026] Beneficial effects: By embedding an elastic seal and making it interference fit with the annular boss, the reliability of the sealing effect is further enhanced, effectively preventing internal and external leakage.

[0027] In one optional embodiment, an annular mounting groove adapted to the annular structure is formed on the inner wall of the valve body. The annular structure is embedded in the annular mounting groove. The axial width of the annular mounting groove is consistent with the axial thickness of the annular structure, and the inner wall of the annular mounting groove is in close contact with the outer wall of the annular structure.

[0028] Beneficial effects: The annular mounting groove provides precise positioning and stable support for the annular structure composed of two open rings, ensuring the correct installation position of the assembly components in the valve body, enhancing the rigidity, stability and pressure resistance of the overall structure, and facilitating long-term stable operation. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the novel ball valve structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the sealing assembly of the novel ball valve structure of this utility model;

[0032] Figure 3 This is a schematic diagram of a prior art sealing assembly for the novel ball valve structure of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Assembly components; 11. First pair of open rings; 12. Second pair of open rings; 13. Connecting parts; 14. Stop blocks; 2. Valve body; 3. Ball. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] In the field of valve technology, V-type ball valves are widely used in various industrial scenarios due to their excellent regulating performance and shut-off capacity. However, assembly efficiency and cost control remain core challenges in their manufacturing process. Existing V-type ball valves have complex core assembly structures, typically involving numerous high-precision components. These components require multiple tedious precision machining processes to meet assembly requirements. This complex machining process not only places extremely high demands on the technical skills of CNC machine tools, measuring equipment, and operators, but also significantly extends the production cycle, leading to persistently high manufacturing costs. Therefore, the traditional structure has become a key bottleneck restricting the improvement of production efficiency and effective cost control, making it difficult to meet the actual needs of large-scale industrial production for both economy and timeliness.

[0040] Furthermore, sealing performance, as a core indicator for evaluating the quality of V-type ball valves, directly relates to the valve's stability and system safety under harsh operating conditions such as high pressure, high temperature, or corrosive media. Existing products generally suffer from significant sealing defects: firstly, during assembly or repeated opening and closing operations, their structural design easily scratches or wears the critical valve waterline, compromising seal integrity; secondly, the sealing contact area between the valve seat and ball 3 is insufficient, making it difficult to form a uniform and effective sealing band. More significantly, the sealing force adjustment between the valve body 2 and ball 3 lacks a convenient and precise mechanism, often relying on operator experience and cumbersome mechanical adjustments. This frequently results in improper pre-tightening force; too little pre-tightening force causes leakage, while too much accelerates wear on the sealing surface, ultimately causing media leakage to exceed permissible standards, failing to meet the stringent requirements of modern industry for high sealing performance and safe operation.

[0041] The following is combined with Figures 1 to 3 The following describes embodiments of the present invention.

[0042] According to an embodiment of this utility model, a novel ball valve structure is provided, comprising: an assembly assembly 1, which includes a first pair of open rings 11 and a second pair of open rings 12, a connector 13, and a stop block 14; the first pair of open rings 11 and the second pair of open rings 12 are symmetrically assembled to form an annular structure; a valve body 2, the annular structure being nested inside the valve body 2; the inner walls of the first pair of open rings 11 and the second pair of open rings 12 being adapted to the outer wall of the valve body 2; a ball 3, which is disposed inside the valve body 2 and abuts against the valve body 2 through the assembly assembly 1; a disc spring is provided between the annular structure and the ball 3, the disc spring abutting against the assembly assembly 1, and the sealing force is adjusted by compressing or releasing the disc spring through the annular structure.

[0043] The annular structure formed by the symmetrical assembly of the first pair of open rings 11 and the second pair of open rings 12 simplifies the assembly structure between the valve body 2 and the ball 3, significantly improving assembly efficiency and maintenance convenience. The open ring structure itself is simple, eliminating the need for complex forced squeezing or friction during assembly, reducing the risk of waterline scraping. The cooperation between the stop block 14 and the open rings limits the assembly position, preventing local squeezing and deformation of the waterline caused by component misalignment. The entire waterline area participates in the sealing of the ball 3 and the assembly component 1. Compared with traditional structures that damage the waterline, the effective sealing surface area is preserved or even increased. The design nested within the valve body 2 enhances the overall structural integrity. The sealing force is adjusted by the compression and release of the disc spring, making the sealing performance adjustable and reliable. The stable and suitable compression allows the sealing surfaces of the ball 3 and the assembly component 1 to fully fit together, avoiding the problem of local non-contact sealing surfaces caused by uneven pressure, effectively improving the sealing adaptability and service life of the ball valve.

[0044] In some embodiments, combined with Figure 2As shown, the assembly assembly 1 also includes a connector 13, through which the second pair of open rings 12 are inserted. The assembly assembly 1 also includes a stop 14, which is fixed to the axial end of the annular structure.

[0045] The connector 13 enables reliable connection and fixation of the ring structure, ensuring its stability; the stop 14 is located at the axial end, providing stable support and force transmission path for the disc spring, ensuring the axial positioning accuracy and force transmission efficiency of the sealing force adjustment structure.

[0046] Specifically, optionally, the connector 13 can be in the form of screws, bolts, or pins, and the stop 14 can also be designed as a split or integral structure. This arrangement achieves reliable connection and fixation of the ring structure, ensuring its structural stability; the stop 14 is located at the axial end, providing stable support and force transmission path for the disc spring, ensuring that the sealing force adjustment mechanism has high axial positioning accuracy and force transmission efficiency.

[0047] In some embodiments, combined with Figure 2 As shown, the connector 13 is a screw, and the second pair of open rings 12 have threaded holes adapted to the screw. The screw passes through the threaded holes and mates with them. By adjusting the screw's screwing depth, the axial force of the ring structure on the stop block 14 is changed.

[0048] By using a screw and threaded hole combination, the axial force of the annular structure on the stop block 14 can be precisely adjusted through a simple screwing operation, thereby achieving fine adjustment of the disc spring compression and accurately controlling the sealing force, which improves the controllability and ease of operation of the ball valve sealing performance.

[0049] In some embodiments, combined with Figure 2 As shown, there are multiple disc springs, which are evenly spaced along the circumference of the ring structure. One end of each disc spring abuts against the stop block 14, and the other end abuts against the ball 3.

[0050] The circumferentially evenly arranged disc springs make the sealing force on the ball 3 more evenly distributed, avoiding local stress concentration, significantly improving the reliability and stability of the seal, and enhancing the alignment between the valve body 2 and the ball 3, which is beneficial to extending the service life of the valve.

[0051] In addition to disc springs, helical springs, wave springs, or other types of elastic elements can also be used to achieve similar functions. This arrangement makes the sealing force on the ball 3 more evenly distributed in the circumferential direction, avoiding stress concentration and significantly improving the reliability and stability of the seal. At the same time, it helps to maintain the alignment between the valve body 2 and the ball 3, extending the service life of the valve.

[0052] In some embodiments, combined with Figure 2As shown, there are at least two screws, which are evenly spaced along the circumference of the second pair of open rings 12, and each screw passes through a threaded hole on the second pair of open rings 12.

[0053] Using at least two screws evenly spaced around the circumference ensures uniform force distribution on the second pair of open rings 12, preventing deformation or loosening caused by single-point force application. This further enhances the connection rigidity and overall stability of the ring structure, guaranteeing the uniformity and reliability of the sealing force adjustment.

[0054] In some embodiments, combined with Figure 2 As shown, the stop block 14 is an annular plate structure. The inner diameter of the stop block 14 is larger than the maximum outer diameter of the sphere 3. The two axial end faces of the stop block 14 are respectively attached to the axial end faces of the second pair of open rings 12 and the disc spring.

[0055] The annular plate-shaped stop 14 has a simple structure and is easy to process and install; its inner diameter is larger than the maximum outer diameter of the ball 3, avoiding interference with the movement of the ball 3; its two end faces are respectively in contact with the split ring and the disc spring, ensuring the effective and smooth transmission of axial force and improving the sealing response performance of the structure.

[0056] In some embodiments, combined with Figure 2 As shown, an annular boss is also provided on the outer side of the sphere 3. One end of the disc spring abuts against the stop block 14, and the other end abuts against the annular boss. By changing the degree of compression of the disc spring by the annular structure, the pressure of the disc spring on the annular boss can be controlled.

[0057] The annular boss provides a clear stress point for the disc spring, allowing the spring's pressure to act directly and effectively on the sphere 3, thus optimizing the force transmission path. By adjusting the spring's compression, the pressure on the boss is controlled, achieving linear and reliable adjustment of the sealing force. The annular boss can be integrally formed with the sphere 3 or fixed to it as a separate part. This structure provides a clear stress point for the disc spring, optimizes the sealing force transmission path, and achieves linear and reliable adjustment of the sealing force.

[0058] In some embodiments, combined with Figure 2 As shown, the sealing surface where the sphere 3 contacts the annular boss is an arc-shaped sealing surface, and the radius of curvature of the arc-shaped sealing surface is matched with the radius of curvature of the outer circle of the sphere 3.

[0059] The arc-shaped sealing surface matches the outer curvature of the sphere 3, significantly increasing the sealing contact area and improving the sealing fit, thereby effectively enhancing the reliability and durability of the sealing performance and reducing the risk of leakage.

[0060] In some embodiments, combined with Figure 2As shown, at least one annular sealing groove is provided on the arc-shaped sealing surface, and an elastic sealing element is embedded in the annular sealing groove. The radial outer side of the elastic sealing element protrudes from the surface of the arc-shaped sealing surface, and the elastic sealing element is interference-fitted with the annular boss.

[0061] By embedding an elastic seal and making it interference fit with the annular boss, the reliability of the sealing effect is further enhanced, effectively preventing internal and external leakage.

[0062] In some embodiments, combined with Figure 2 As shown, an annular mounting groove adapted to the annular structure is provided on the inner wall of the valve body 2. The annular structure is embedded in the annular mounting groove. The axial width of the annular mounting groove is consistent with the axial thickness of the annular structure, and the inner wall of the annular mounting groove is tightly fitted with the outer wall of the annular structure.

[0063] The annular mounting groove provides precise positioning and stable support for the annular structure composed of two open rings, ensuring the correct installation position of assembly component 1 within valve body 2, enhancing the rigidity, stability, and pressure resistance of the overall structure, and facilitating long-term stable operation.

[0064] The ball valve operates by achieving and controlling the seal between the ball 3 and the valve seat through an adjustable axial preload. The operator symmetrically inserts the first pair of open rings 11 and the second pair of open rings 12 into the annular mounting groove of the valve body 2, forming a stable annular frame. Then, the connector 13 is inserted and initially tightened. Next, by precisely adjusting the screw depth, the entire annular structure is driven to produce a slight displacement along the axial direction of the valve body 2, thereby pushing the stop 14 at its end to compress a set of circumferentially evenly distributed disc springs. The compressed disc springs generate a controllable and constant-direction elastic reaction force, which is transmitted through the stop 14 and the annular structure, ultimately being evenly applied to the annular boss of the ball 3, pushing the ball 3 towards the valve seat sealing surface and forming a tight interference fit. When it is necessary to adjust the sealing performance or compensate for wear, simply readjusting the screw depth changes the compression of the disc springs, thereby dynamically increasing or decreasing the sealing force to ensure that the valve maintains a reliable and non-overly tight seal throughout its lifespan.

[0065] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A novel ball valve structure, characterized in that, include: Assembly component (1), the assembly component (1) includes a first pair of open rings (11) and a second pair of open rings (12), a connector (13) and a stop (14), the first pair of open rings (11) and the second pair of open rings (12) are symmetrically assembled to form a ring structure; Valve body (2), the annular structure is nested inside the valve body (2), and the inner walls of the first pair of open rings (11) and the second pair of open rings (12) are adapted to the outer wall of the valve body (2); A ball (3) is disposed inside the valve body (2) and abuts against the valve body (2) through the assembly assembly (1); A disc spring is provided between the annular structure and the sphere (3). The disc spring abuts against the assembly assembly (1). The sealing force is adjusted by compressing or releasing the disc spring through the annular structure.

2. The novel ball valve structure according to claim 1, characterized in that, The assembly assembly (1) further includes a connector (13) through which the second pair of open rings (12) pass. The assembly assembly (1) also includes a stop (14) which is fixed to the axial end of the annular structure.

3. The novel ball valve structure according to claim 1, characterized in that, The connector (13) is a screw. The second pair of open rings (12) has a threaded hole adapted to the screw. The screw passes through the threaded hole and engages with the threaded hole. By adjusting the screw's screwing depth, the axial force of the ring structure on the stop (14) is changed.

4. The novel ball valve structure according to claim 3, characterized in that, There are multiple disc springs, which are evenly spaced along the circumference of the annular structure. One end of each disc spring abuts against the stop block (14), and the other end abuts against the sphere (3).

5. The novel ball valve structure according to claim 4, characterized in that, The number of screws is at least two, and they are evenly spaced along the circumference of the second pair of open rings (12), with each screw corresponding to a threaded hole on the second pair of open rings (12).

6. The novel ball valve structure according to claim 5, characterized in that, The stop block (14) is an annular plate structure. The inner diameter of the stop block (14) is larger than the maximum outer diameter of the sphere (3). The two axial end faces of the stop block (14) are respectively attached to the axial end faces of the second pair of open rings (12) and the disc spring.

7. The novel ball valve structure according to claim 6, characterized in that, The outer side of the sphere (3) is also provided with an annular boss. One end of the disc spring abuts against the stop block (14), and the other end abuts against the annular boss. By changing the degree of compression of the disc spring by the annular structure, the pressure of the disc spring on the annular boss can be controlled.

8. The novel ball valve structure according to claim 7, characterized in that, The sealing surface of the sphere (3) in contact with the annular boss is an arc-shaped sealing surface, and the radius of curvature of the arc-shaped sealing surface is adapted to the radius of curvature of the outer circle of the sphere (3).

9. The novel ball valve structure according to claim 8, characterized in that, At least one annular sealing groove is provided on the arc-shaped sealing surface. An elastic sealing element is embedded in the annular sealing groove. The radially outer side of the elastic sealing element protrudes from the surface of the arc-shaped sealing surface, and the elastic sealing element is interference-fitted with the annular boss.

10. The novel ball valve structure according to claim 8, characterized in that, The valve body (2) has an annular mounting groove on its inner wall that is adapted to the annular structure. The annular structure is embedded in the annular mounting groove. The axial width of the annular mounting groove is consistent with the axial thickness of the annular structure, and the inner wall of the annular mounting groove is in close contact with the outer wall of the annular structure.

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