Bidirectional flow hard sealing metal ball valve

Abstract

The utility model relates to the field of valve production, in particular to a bidirectional flow hard sealing metal ball valve which comprises a valve body and a mounting ring, two symmetrical valve seats are arranged in the valve body, a plurality of sleeves are fixedly connected to the outer walls of the valve seats, telescopic rods are arranged in the sleeves, one end of each telescopic rod is fixedly connected with the mounting ring, and the other end of each telescopic rod is fixedly connected with the mounting ring. Two grooves are formed in the mounting ring, moving rods are arranged in the grooves, and one ends of the moving rods are correspondingly connected with a first scraping ring and a second scraping ring respectively. According to the device, the stepped collaborative cleaning structure of the three scraping rings with different sections and the rigid-flexible combined scraping design are utilized, so that the effects of efficiently cleaning impurities with different sizes in a grading manner and avoiding ball abrasion while the cleaning strength is ensured are achieved; the problem that an existing device lacks a multi-stage impurity cleaning system and a rigid-flexible balance scraping structure is solved, the sealing reliability of the valve is remarkably improved, and the service life of the valve is remarkably prolonged.

Description

Technical Field

[0001] This utility model relates to the field of valve manufacturing, and in particular to a bidirectional flow hard-seal metal ball valve. Background Technology

[0002] In the field of industrial fluid control, bidirectional flow hard-seal metal ball valves are widely used due to their bidirectional sealing and resistance to high temperatures and pressures. However, existing ball valves have significant shortcomings when handling complex media containing particles and impurities. First, they lack effective impurity cleaning structures, allowing tiny particles to easily embed into the sealing surface, leading to seal failure and leakage. Second, while some ball valves have scraping components, these are often single-structured and unable to handle impurities of different sizes. Rigid scraping can damage the ball surface, while flexible designs cannot guarantee sufficient cleaning force. Furthermore, the seat sealing structure of traditional ball valves, after long-term use, suffers from insufficient elastic compensation due to media pressure and impurity wear, resulting in decreased sealing reliability. These problems limit the application of ball valves in demanding conditions such as petrochemical and metallurgical industries, necessitating an improved solution that balances efficient impurity cleaning with reliable sealing.

[0003] While existing technologies can achieve certain water flow control effects during use, they suffer from drawbacks: the lack of a multi-stage impurity cleaning system and a rigid-flexible balanced scraping structure. In view of this, we propose a bidirectional flow hard-seal metal ball valve, which solves the above problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a bidirectional flow hard-seal metal ball valve.

[0005] The technical solution of this utility model is as follows: A bidirectional flow hard-seal metal ball valve includes a valve body and an mounting ring. The valve body is provided with two symmetrical valve seats. Multiple sleeves are fixedly connected to the outer wall of the valve seats. A telescopic rod is provided inside the sleeve. One end of the telescopic rod is fixedly connected to the mounting ring. The mounting ring is provided with two grooves. A moving rod is provided in the groove. One end of the moving rod is respectively connected to a first scraper ring and a second scraper ring.

[0006] When using a bidirectional flow hard-seal metal ball valve in this solution, the first scraper ring has the shortest upper base of its trapezoidal cross-section. During valve opening and closing, it effectively scrapes away tiny particles of impurities, such as dust and fine crystals, adhering to the ball surface, providing initial cleaning for the sealing surface, preventing tiny particles from adhering to the ball surface, avoiding wear on the sealing surface, and ensuring sealing performance. The second scraper ring has a moderately long upper base of its trapezoidal cross-section; it can clean up slightly larger particles of impurities missed by the first scraper ring, further enhancing the cleaning effect on the ball surface. When impurities that the first scraper ring cannot completely remove pass through, the second scraper ring intercepts them in time, forming a double protection with the first scraper ring and improving the efficiency of impurity cleaning. The third scraper ring has the longest upper base of its trapezoidal cross-section, the largest inner diameter, and is rigidly fixed to the mounting ring; it is mainly responsible for intercepting and scraping away larger impurities around the mounting ring, such as blocky deposits and gravel, preventing these large particles of impurities from affecting the normal operation of the mounting ring and internal components. At the same time, its large cleaning area can cover the inside of the valve body. Over a wide area, in conjunction with the first two scraper rings, a comprehensive impurity cleaning system is constructed to maintain the cleanliness of the valve body cavity. The first and second scraper rings are connected to the mounting ring via a first spring, forming a flexible contact. During valve operation, the support force provided by the spring ensures that the scraper rings always adhere to the ball surface, effectively removing impurities while buffering the impact force from the ball's rotation. This flexible design avoids wear on the ball surface caused by rigid contact, making it particularly suitable for applications requiring high precision of the ball surface. It also ensures that the scraper rings maintain a stable working state during long-term use, extending the service life of both the scraper rings and the ball. The third scraper ring is rigidly fixed to the mounting ring via a fixing rod. Thanks to its stable connection, it can powerfully scrape away larger impurities. The rigid structure allows it to maintain a stable scraping force when facing blocky or hard impurities, effectively intercepting and removing large particles around the mounting ring. Its rigidity ensures efficient cleaning of large particles under complex operating conditions, maintaining the stable operation of the valve's internal structure.

[0007] Preferably, a plurality of first springs are fixedly connected to one side of the outer wall of both the first scraper ring and the second scraper ring. The other end of the first spring is fixedly connected to the mounting ring. One end of the sleeve is fixedly connected to one end of the second spring, and the other end of the second spring is fixedly connected to the outer wall of the mounting ring.

[0008] Preferably, the outer wall of the mounting ring is fixedly connected with a plurality of fixing rods, and a third scraper ring is fixedly connected to one end of each fixing rod.

[0009] Preferably, the valve body is provided with a ball, which is located between two valve seats.

[0010] Preferably, the upper end of the ball is provided with a valve stem, and a handle is fixedly connected to the upper end of the valve stem.

[0011] Preferably, flanges are fixedly connected to both ends of the valve body.

[0012] Preferably, a drain outlet is provided on one side of the valve body, and a cover is provided at one end of the drain outlet.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] I. This utility model breaks through the limitations of traditional ball valves with a single or no scraping structure by using three scraping rings with different cross-sections working in tandem. The first scraping ring removes small particles, the second scraping ring intercepts slightly larger impurities, and the third scraping ring handles large particles, forming a stepped cleaning system that effectively reduces the wear of impurities on sealing components, enhances the valve's adaptability to impurity-containing media, and extends its service life.

[0015] Second, based on the first beneficial effect, unlike the problems of rigidity and easy damage and lack of flexibility of traditional ball valves, the first and second scraper rings are flexible and fit the ball to clean impurities and prevent wear, while the third scraper ring is rigid and removes large particles, taking into account both cleaning power and surface protection, thus improving the reliability and stability of the valve under complex working conditions.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0019] Figure 3 This is a front view schematic diagram of the mounting ring of this utility model;

[0020] Figure 4 This is a first-view cross-sectional view of the mounting ring of this utility model;

[0021] Figure 5 This is a second-view cross-sectional view of the mounting ring of this utility model;

[0022] Figure 6 For the present utility model Figure 2 Enlarged schematic diagram of structure A in the middle.

[0023] Figure label:

[0024] 1. Handle; 2. Valve stem; 3. Flange; 4. Drain port; 5. Cover; 6. Valve body; 7. Valve seat; 8. Ball; 9. Mounting ring; 10. Moving rod; 11. First spring; 12. Groove; 13. First scraper ring; 14. Fixing rod; 15. Sleeve; 16. Second spring; 17. Telescopic rod; 18. Second scraper ring; 19. Third scraper ring. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] Please see Figures 1-6 As shown, this embodiment is a bidirectional flow hard-seal metal ball valve, including a valve body 6 and an mounting ring 9. The valve body 6 has two symmetrical valve seats 7. Multiple sleeves 15 are fixedly connected to the outer wall of the valve seats 7. The sleeves 15 have telescopic rods 17. One end of the telescopic rods 17 is fixedly connected to the mounting ring 9. The mounting ring 9 has two grooves 12. The grooves 12 have movable rods 10. One end of the movable rods 10 is respectively connected to a first scraper ring 13 and a second scraper ring 18. In use, the upper cross-sectional shape of the first scraper ring 13, the second scraper ring 18 and the third scraper ring 19 are all trapezoidal, and the length of the upper base of the trapezoid increases sequentially. When the ball 8 rotates in the valve body 6, the first scraper ring 13 and the second scraper ring 18 can more effectively scrape off the impurities on the surface of the ball 8, while the third scraper ring 19 can clean larger particles of impurities around the mounting ring 9. The stepped scraping structure improves the efficiency of impurity cleaning and reduces the wear of impurities on the sealing components.

[0031] Example 2

[0032] Please see Figures 1-6As shown, this embodiment, based on embodiment 1, further includes: multiple first springs 11 fixedly connected to the outer wall of one side of the first scraper ring 13 and the second scraper ring 18; the other end of the first spring 11 fixedly connected to the mounting ring 9; one end of the sleeve 15 fixedly connected to one end of the second spring 16; and the other end of the second spring 16 fixedly connected to the outer wall of the mounting ring 9. In use, the first springs 11 provide support, allowing the first scraper ring 13 and the second scraper ring 18 to make flexible contact with the ball 8. This flexible contact ensures that the scraper rings are in close contact with the surface of the ball 8, effectively removing impurities, while also avoiding wear on the surface of the ball 8 caused by rigid contact. At the same time, when the ball 8 rotates, the first springs 11 can absorb a certain impact force, ensuring stable operation of the scraper rings and extending the service life of the valve.

[0033] Multiple fixing rods 14 are fixedly connected to the outer wall of the mounting ring 9. A third scraper ring 19 is fixedly connected to one end of each fixing rod 14. In use, the third scraper ring 19 has the largest inner diameter and is rigidly fixed to the mounting ring 9. The rigidly fixed third scraper ring 19 can reliably intercept and scrape off larger impurities around the mounting ring 9. Its larger inner diameter design can cover a wider cleaning area. Together with the first and second scraper rings, it forms a comprehensive impurity cleaning system to ensure the cleanliness of the valve body 6 cavity and maintain the valve in good working condition.

[0034] The valve body 6 contains a ball 8, which is located between two valve seats 7. As the core control component of the valve, the ball 8 opens and closes the valve by rotating. The two valve seats 7 are symmetrically arranged on both sides of the ball 8 and fit against the surface of the ball 8, thus forming a bidirectional sealing structure when the ball 8 is in the closed state, effectively preventing fluid leakage.

[0035] The upper end of the ball 8 is provided with a valve stem 2, and a handle 1 is fixedly connected to the upper end of the valve stem 2. When in use, the operator rotates the handle 1 to drive the valve stem 2 to rotate, thereby driving the ball 8 to rotate and realize the switching of the valve opening and closing state.

[0036] Flanges 3 are fixedly connected to both ends of the valve body 6. The flanges 3 facilitate quick connection and disassembly of the valve and the pipeline. The flanges 3 are fastened to the pipeline flanges with bolts to ensure the sealing and stability of the connection. It is suitable for various industrial pipeline systems and meets the needs of different installation environments and working conditions.

[0037] A drain port 4 is provided on one side of the valve body 6, and a cover 5 is provided at one end of the drain port 4. During the use of the valve, when it is necessary to drain the residual liquid or impurities in the valve body 6 or to carry out maintenance, the cover 5 can be opened and the internal substances can be discharged through the drain port 4 to keep the inner cavity of the valve body 6 dry and clean, prevent corrosion and blockage caused by residual media, and improve the maintenance convenience and service life of the valve.

[0038] Instructions for Use: When using this device, the first scraper ring 13 has the shortest upper trapezoidal base. During valve opening and closing, it effectively scrapes away tiny particles of impurities, such as dust and fine crystals, adhering to the surface of the ball 8, providing initial cleaning for the sealing surface, preventing tiny particles from adhering to the surface of the ball 8, avoiding wear on the sealing surface, and ensuring sealing performance. The second scraper ring 18 has a moderately long trapezoidal base; it can clean up slightly larger particles of impurities missed by the first scraper ring 13, further enhancing the cleaning effect on the surface of the ball 8. When impurities that the first scraper ring 13 cannot completely remove pass through, the second scraper ring 18 intercepts them in time, forming a double protection with the first scraper ring 13 and improving the efficiency of impurity cleaning. The third scraper ring 19 has the longest trapezoidal base and the largest inner diameter and is rigidly fixed to the mounting ring 9. It is mainly responsible for intercepting and scraping away larger impurities around the mounting ring 9, such as blocky deposits and gravel, preventing these large particles of impurities from affecting the normal operation of the mounting ring 9 and internal components. At the same time, its large cleaning range can cover a wide area inside the valve body 6, working in conjunction with the first two scraper rings to form a comprehensive cleaning system. A comprehensive impurity cleaning system is established to maintain the cleanliness of the valve body 6's internal cavity. The first scraper ring 13 and the second scraper ring 18 are connected to the mounting ring 9 via the first spring 11, forming a flexible contact. During valve operation, the support force provided by the spring ensures that the scraper ring always adheres to the surface of the ball 8, effectively removing impurities and buffering the impact force from the rotation of the ball 8. This flexible design avoids wear on the surface of the ball 8 caused by rigid contact, making it particularly suitable for applications requiring high precision on the surface of the ball 8. It also ensures that the scraper ring maintains a stable working state during long-term use, extending the service life of both the scraper ring and the ball 8. The third scraper ring 19 is rigidly fixed to the mounting ring 9 via a fixing rod 14. Its stable connection allows for powerful scraping of larger impurities. The rigid structure enables it to maintain a stable scraping force when facing blocky or hard impurities, effectively intercepting and removing large particles around the mounting ring 9, preventing impurity accumulation from affecting the normal operation of the valve. Its rigidity ensures efficient cleaning of large particles under complex operating conditions, maintaining the stable operation of the valve's internal structure.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bidirectional flow hard-seal metal ball valve, comprising a valve body (6) and a mounting ring (9), characterized in that: The valve body (6) is provided with two symmetrical valve seats (7). Multiple sleeves (15) are fixedly connected to the outer wall of the valve seat (7). A telescopic rod (17) is provided in the sleeve (15). One end of the telescopic rod (17) is fixedly connected to the mounting ring (9). Two grooves (12) are provided in the mounting ring (9). A moving rod (10) is provided in the groove (12). One end of the moving rod (10) is respectively connected to the first scraper ring (13) and the second scraper ring (18).

2. The bidirectional flow hard-seal metal ball valve according to claim 1, characterized in that: Multiple first springs (11) are fixedly connected to one side of the outer wall of the first scraper ring (13) and the second scraper ring (18). The other end of the first spring (11) is fixedly connected to the mounting ring (9). One end of the sleeve (15) is fixedly connected to one end of the second spring (16), and the other end of the second spring (16) is fixedly connected to the outer wall of the mounting ring (9).

3. A bidirectional flow hard-seal metal ball valve according to claim 2, characterized in that: The outer wall of the mounting ring (9) is fixedly connected with a plurality of fixing rods (14), and a third scraping ring (19) is fixedly connected to one end of the fixing rod (14).

4. The bidirectional flow hard-seal metal ball valve according to claim 1, characterized in that: The valve body (6) is provided with a ball (8), which is located between two valve seats (7).

5. A bidirectional flow hard-seal metal ball valve according to claim 4, characterized in that: The ball (8) is provided with a valve stem (2) at its upper end, and a handle (1) is fixedly connected to the upper end of the valve stem (2).

6. A bidirectional flow hard-seal metal ball valve according to claim 1, characterized in that: Flanges (3) are fixedly connected to both ends of the valve body (6).

7. A bidirectional flow hard-seal metal ball valve according to claim 6, characterized in that: The valve body (6) has a drain outlet (4) on one side, and a cover (5) is provided at one end of the drain outlet (4).

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