Stainless steel casting ball valve of novel sealing gasket structure

Abstract

The utility model discloses a novel stainless steel casting ball valve of a sealing gasket structure, which comprises a valve body, a first mounting groove is arranged on the valve body, a ball body is arranged in the first mounting groove, connecting blocks are fixedly connected to the outer walls of the two sides of the ball body, top blocks are fixedly connected to the connecting blocks, connecting shafts are fixedly connected to the connecting blocks, and the connecting shafts are fixedly connected to the top blocks. One connecting shaft is rotationally connected into the first mounting groove, a valve rod is fixedly connected to the other connecting shaft, and sealing gasket bodies are arranged on the other two sides of the ball body; the ejection block is additionally arranged on the ball body, and the ejection block can eject the mounting seat open in the rotating process of the ball body, so that the sealing gasket body is separated from the ball body, the rotating ball body is prevented from damaging the sealing gasket body, and the service life of the sealing gasket body is prolonged; according to the utility model, the vertical split type design is adopted, and only the top cover needs to be unscrewed during overhaul and maintenance, so that the overhaul efficiency can be effectively improved, and the influence on production is avoided.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a stainless steel cast ball valve with a novel sealing gasket structure. Background Technology

[0002] Stainless steel cast ball valves are a commonly used type of valve in industrial pipeline systems. Thanks to the excellent corrosion resistance of stainless steel, they can operate stably in corrosive media environments such as acids, alkalis, and salts, and are not easily damaged by rust. Furthermore, they only require a 90-degree rotation to open and close, making operation simple, requiring minimal torque, and possessing a relatively compact structure, making them widely used in various fluid control scenarios. However, existing stainless steel cast ball valves have the following drawbacks: 1. The sealing gasket is a key component of the ball valve. Its function is to effectively prevent fluid from passing through the gap between the valve seat and the ball when the valve is closed, ensuring the valve's sealing performance. However, during frequent rotation of the ball, the sealing gasket in contact with the ball will wear and deform, reducing sealing performance and leading to fluid leakage, affecting the normal operation of the pipeline system; 2. Stainless steel cast ball valves are mostly of a split left and right structure. When the sealing gasket ages or is damaged and needs replacement, the entire valve must be disassembled from the pipeline. This process is extremely cumbersome and time-consuming, leading to prolonged pipeline system downtime and significantly impacting production. Utility Model Content

[0003] The purpose of this invention is to provide a novel stainless steel cast ball valve with a sealing gasket structure to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a novel stainless steel cast ball valve with a sealing gasket structure, comprising a valve body, a first mounting groove on the valve body, a ball disposed in the first mounting groove, connecting blocks fixedly connected to the outer walls of both sides of the ball, a top block fixedly connected to each connecting block, and a connecting shaft fixedly connected to each connecting block, wherein one connecting shaft is rotatably connected to the first mounting groove, and a valve stem is fixedly connected to the other connecting shaft; sealing gasket bodies are disposed on the other two sides of the ball, mounting seats are sleeved on the sealing gasket bodies, and the mounting seats are slidably connected to the first mounting groove; a spring is sleeved on the mounting seat, with one end of the spring disposed on the mounting seat and the other end disposed in the first mounting groove.

[0005] Preferably, the valve body is threadedly connected to a top cover, and the valve stem is rotatably connected inside the top cover.

[0006] Preferably, the top cover has an external thread, the valve body has an internal thread, and the internal thread is threaded onto the external thread.

[0007] Preferably, the valve body has a stepped groove, a sealing ring is provided in the stepped groove, and a flange is fixedly connected to the top cover, and the flange is sleeved in the stepped groove and is located at the top of the sealing ring.

[0008] Preferably, flanges are fixedly connected to both outer walls of the valve body.

[0009] Preferably, the sphere has a through hole.

[0010] Preferably, the mounting base has a second mounting groove, and the sealing gasket body is fitted into the second mounting groove.

[0011] Preferably, the top block has a through groove, and the connecting block is fixedly connected to the through groove.

[0012] This utility model provides a novel stainless steel cast ball valve with a sealing gasket structure. Its advantages are as follows: A top block is added to the ball. During ball rotation, the top block pushes open the mounting base, separating the sealing gasket from the ball, thus preventing damage to the sealing gasket from the rotating ball and extending its service life. Furthermore, this utility model adopts a split-type design, allowing for easy maintenance by simply unscrewing the top cover, effectively improving maintenance efficiency and avoiding disruption to production. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the 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 based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall front view sectional structure of this utility model;

[0016] Figure 3 The overall three-dimensional structure of this utility model explodes;

[0017] Figure 4 for Figure 3 Enlarged view of the structure of region A in the middle.

[0018] In the diagram: 1. Valve body; 11. First mounting groove; 12. Stepped groove; 13. Internal thread; 14. Flange; 2. Ball; 21. Through hole; 22. Connecting block; 23. Connecting shaft; 3. Sealing gasket body; 31. Mounting seat; 32. Second mounting groove; 33. Spring; 4. Top block; 41. Through groove; 5. Sealing ring; 6. Top cover; 61. Flange; 62. External thread; 7. Valve stem. Detailed Implementation

[0019] 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.

[0020] Please see the appendix Figure 1 -Appendix Figure 4This utility model provides an embodiment of a novel stainless steel cast ball valve with a sealing gasket structure, comprising a valve body 1, a first mounting groove 11 on the valve body 1, a ball 2 disposed within the first mounting groove 11, connecting blocks 22 fixedly connected to the outer walls of both sides of the ball 2, a top block 4 fixedly connected to each connecting block 22, and a connecting shaft 23 fixedly connected to each connecting block 22, wherein one connecting shaft 23 is rotatably connected to the first mounting groove 11, and a valve stem 7 is fixedly connected to the other connecting shaft 23; sealing gasket bodies 3 are disposed on the other two sides of the ball 2, and mounting seats 31 are sleeved on the sealing gasket bodies 3. The mounting seat 31 is slidably connected to the first mounting groove 11. A spring 33 is sleeved on the mounting seat 31, with one end of the spring 33 set on the mounting seat 31 and the other end set in the first mounting groove 11. By rotating the valve stem 7, the connecting shaft 23 can drive the connecting block 22, which in turn drives the ball 2 to rotate, thereby switching the working mode of the ball valve. During this process, the top block 4 on the connecting block 22 rotates accordingly, pushing the mounting seats 31 on both sides apart, causing the sealing gasket body 3, which was originally attached to the ball 2, to detach from the ball 2. After rotating ninety degrees, the top block 4 no longer pushes the mounting seat 31 apart. Under the elastic action of the spring 33, the valve... The mounting base 31 is reset, and the sealing gasket body 3 on it re-adheres to the ball 2; a top cover 6 is threadedly connected to the valve body 1, and the valve stem 7 is rotatably connected to the top cover 6. The top cover 6 is used to seal the top of the valve body 1; an external thread 62 is provided on the top cover 6, and an internal thread 13 is provided on the valve body 1. The internal thread 13 is threadedly connected to the external thread 62. The internal thread 13 and the external thread 62 are used to realize the threaded connection between the top cover 6 and the valve body 1; a stepped groove 12 is provided on the valve body 1, and a sealing ring 5 is provided in the stepped groove 12. A flange 61 is fixedly connected to the top cover 6, and the flange 61 is sleeved in the stepped groove 12. The flange 61 is located on the top of the sealing ring 5. At the end, the stepped groove 12 is used to accommodate the flange 61 and the sealing ring 5. The flange 61 is used to press the sealing ring 5, and the sealing ring 5 is used to improve the sealing between the valve body 1 and the top cover 6. Flanges 14 are fixedly connected to both outer walls of the valve body 1, and the flanges 14 are used to connect pipes. A through hole 21 is opened on the ball 2, and the through hole 21 is used for fluid flow. A second mounting groove 32 is opened on the mounting base 31, and the sealing gasket body 3 is sleeved in the second mounting groove 32. The second mounting groove 32 is used to install the sealing gasket body 3. A through groove 41 is opened on the top block 4, and the connecting block 22 is fixedly connected in the through groove 41. The through groove 41 is used to accommodate the connecting block 22.

[0021] Working principle: When using this invention, rotating the valve stem 7 drives the connecting block 22 via the connecting shaft 23, which in turn drives the ball 2 to rotate, thus switching the working mode of the ball valve. During this process, the top block 4 on the connecting block 22 rotates accordingly, pushing open the mounting seats 31 on both sides, causing the sealing gasket body 3, which was originally attached to the ball 2, to detach from the ball 2. After rotating 90 degrees, the top block 4 no longer pushes open the mounting seat 31, and under the elastic action of the spring 33, the mounting seat 31 returns to its original position, and the sealing gasket body 3 on it reattaches to the ball 2. If the ball valve needs to be disassembled for maintenance and the sealing gasket body 3 needs to be replaced, the top cover 6 on the valve body 1 can be unscrewed, the ball 2 can be removed, and then the mounting seat 31 can be directly removed from the first mounting groove 11 for sealing. Replace the gasket body 3. After replacement, reinstall the mounting base 31 and press the ball 2 into the gap between the two mounting bases 31. Under the elastic action of the spring 33, the gasket body 3 will automatically fit the ball 2 to ensure sealing. Finally, reinstall the top cover 6 on the valve body 1. The stepped groove 12 is used to accommodate the flange 61 and the sealing ring 5. The flange 61 is used to press the sealing ring 5. The sealing ring 5 is used to improve the sealing between the valve body 1 and the top cover 6. The internal thread 13 matches the external thread 62 to realize the threaded connection between the top cover 6 and the valve body 1. The flange 14 is used to connect the pipe. The through hole 21 is used for fluid flow. The second mounting groove 32 is used to install the gasket body 3. The through groove 41 is used to accommodate the connecting block 22.

[0022] 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 based on the specific circumstances.

[0023] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A novel stainless steel cast ball valve with a sealing gasket structure, comprising a valve body (1), characterized in that: The valve body (1) is provided with a first mounting groove (11), and a ball (2) is provided in the first mounting groove (11). Connecting blocks (22) are fixedly connected to the outer walls on both sides of the ball (2). A top block (4) is fixedly connected to the connecting blocks (22). A connecting shaft (23) is fixedly connected to the connecting blocks (22). One of the connecting shafts (23) is rotatably connected to the first mounting groove (11), and a valve stem (7) is fixedly connected to the other connecting shaft (23). A sealing gasket body (3) is provided on the other two sides of the ball (2). A mounting seat (31) is sleeved on the sealing gasket body (3), and the mounting seat (31) is slidably connected to the first mounting groove (11). A spring (33) is sleeved on the mounting seat (31), and one end of the spring (33) is set on the mounting seat (31), and the other end is set in the first mounting groove (11).

2. The stainless steel cast ball valve according to claim 1, characterized in that: The valve body (1) is threadedly connected to a top cover (6), and the valve stem (7) is rotatably connected to the top cover (6).

3. The stainless steel cast ball valve according to claim 2, characterized in that: The top cover (6) is provided with an external thread (62), and the valve body (1) is provided with an internal thread (13), and the internal thread (13) is threaded onto the external thread (62).

4. The stainless steel cast ball valve according to claim 3, characterized in that: The valve body (1) has a stepped groove (12) and a sealing ring (5) is provided in the stepped groove (12). A flange (61) is fixedly connected to the top cover (6) and the flange (61) is sleeved in the stepped groove (12). The flange (61) is located at the top of the sealing ring (5).

5. The stainless steel cast ball valve according to claim 4, characterized in that: Flanges (14) are fixedly connected to both outer walls of the valve body (1).

6. The stainless steel cast ball valve according to claim 1, characterized in that: The sphere (2) has a through hole (21).

7. The stainless steel cast ball valve according to claim 1, characterized in that: The mounting base (31) has a second mounting groove (32), and the sealing gasket body (3) is fitted into the second mounting groove (32).

8. The stainless steel cast ball valve with a novel sealing gasket structure according to claim 1, characterized in that: The top block (4) has a through groove (41), and the connecting block (22) is fixedly connected to the through groove (41).

Images