High-pressure fixed ball

Abstract

The utility model discloses a high-pressure fixed ball, which comprises a ball core and a valve rod mounting shaft, and further comprises a steering linkage assembly, the ball core is provided with an upper butt-joint slot for the valve rod mounting shaft to insert, the valve rod mounting shaft is provided with a linkage limiting slot, and when the valve rod mounting shaft is inserted into the upper butt-joint slot, the linkage limiting slot is matched with the upper butt-joint slot. The upper butt joint inserting groove intersects with the linkage limiting groove, and the steering linkage assembly is matched with the upper butt joint inserting groove and the linkage limiting groove to form steering linkage between the ball core and the valve rod installation shaft. The utility model has the following advantages and effects: the processing cost is lower, and the steering intensity is high, so as to adapt to the high-pressure working condition environment.

Description

Technical Field

[0001] This utility model relates to a valve ball, and more particularly to a high-pressure fixed ball. Background Technology

[0002] The valve ball is a key component of a valve, typically spherical in shape, with a passage formed in the center. The ball rotates to control the opening and closing of the valve's flow path, thereby controlling the flow rate of the medium. Balls are usually made of materials such as stainless steel, copper, and cast iron, which offer good corrosion resistance and mechanical properties. Types of valve balls include fixed balls, three-way balls, hemispherical balls, and balls with handles.

[0003] The ball comprises a ball core and a valve stem mounting shaft disposed on the ball core. Existing methods for fixing the valve stem mounting shaft to the ball core mainly fall into two categories: integral connection and welding. Integral connection involves machining the ball to form the valve stem mounting shaft, but this machining method requires high precision and advanced machine tools, resulting in high processing costs. Welding, on the other hand, has limited strength and is prone to microcracks, making it unsuitable for high-pressure applications. Based on these existing problems, this improvement was developed. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure fixed sphere that has low processing cost and high directional strength, thereby adapting to high-pressure working conditions.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-pressure fixed ball, including a ball core and a valve stem mounting shaft, and a steering linkage assembly. The ball core is provided with an upper docking slot for the valve stem mounting shaft to be inserted into, and the valve stem mounting shaft is provided with a linkage limiting groove. When the valve stem mounting shaft is inserted into the upper docking slot, the upper docking slot and the linkage limiting groove intersect. The steering linkage assembly, in conjunction with the upper docking slot and the linkage limiting groove, forms a steering linkage between the ball core and the valve stem mounting shaft.

[0006] By adopting the above technical solution, the valve stem mounting shaft is inserted into the upper mating slot, ensuring that the upper mating slot intersects with the linkage limiting groove. Then, the steering linkage assembly is installed into the intersection of the upper mating slot and the linkage limiting groove, thus establishing steering linkage between the ball core and the valve stem mounting shaft, thereby completing the assembly operation of the ball core and the valve stem mounting shaft. This structure has low processing costs and high steering strength, making it suitable for high-pressure operating environments.

[0007] The configuration is further defined as follows: the linkage limiting groove extends radially through the valve stem mounting shaft, and the linkage limiting groove extends along the axis of the valve stem mounting shaft to form an elongated strip.

[0008] By adopting the above technical solution, the linkage limit groove can be easily processed by slotting and cutting the valve stem mounting shaft, which reduces the processing cost. In addition, this structure can also facilitate the assembly operation of the steering linkage component.

[0009] The steering linkage component is further configured as follows: the steering linkage component includes a steering linkage groove disposed on the side wall of the upper docking slot and a rotation linkage block disposed at the intersection of the upper docking slot and the linkage limiting groove and extending into the steering linkage groove.

[0010] By adopting the above technical solution, after the valve stem mounting shaft is inserted into the upper docking slot, the rotating linkage block is installed at the intersection of the upper docking slot and the linkage limiting slot through the linkage limiting slot and extends into the steering linkage slot, thereby forming the steering linkage between the ball core and the valve stem mounting shaft. The upper docking slot and the steering linkage slot can be easily processed by drilling and slotting the ball core, thereby reducing processing costs.

[0011] The configuration is further defined as follows: the number of steering linkage slots is set to two, and when the valve stem mounting shaft is inserted into the upper docking slot, the two steering linkage slots correspond to the orthogonal projection positions of the two ends of the linkage limit slot.

[0012] By adopting the above technical solution, the contact surface is increased to reduce the occurrence of concentrated force, thereby further improving steering strength.

[0013] A further feature is provided: when the valve stem mounting shaft is inserted into the upper docking slot, the valve stem mounting shaft is provided with a limiting structure to restrict the rotation linkage block from leaving the upper docking slot.

[0014] By adopting the above technical solution, the limit structure is set to prevent the steering linkage block from accidentally dislodging, thereby reducing the failure rate of the structure.

[0015] The valve stem mounting shaft is further configured to have a mating groove for valve stem mounting, and the limiting structure includes a limiting hole connecting the bottom of the mating groove and the linkage limiting groove, and a limiting post disposed in the limiting hole.

[0016] By adopting the above technical solution, the limiting post is inserted into the limiting hole and abuts against the steering linkage block. When the valve stem is inserted into the docking groove, the upward movement of the limiting post is restricted, so that the existing limiting post can limit the steering linkage block.

[0017] The further configuration includes a support shaft, and a lower mating slot for inserting the support shaft is formed on the ball core. An alignment structure is formed between the lower mating slot and the support shaft to achieve coaxiality between the lower mating slot and the support shaft.

[0018] By adopting the above technical solution, the assembly gap formed between the support shaft and the lower mating slot is compensated by the centering structure, thereby improving product accuracy, and this processing method has a lower cost.

[0019] The alignment structure is further configured as follows: the alignment structure includes an alignment slope disposed on the side wall of the lower docking slot and gradually expanding along the opening of the lower docking slot, and a mating slope formed on the support shaft and cooperating with the alignment slope.

[0020] By adopting the above technical solution, the centering inclined surface and the mating inclined surface are used together to compensate for the assembly gap.

[0021] In summary, this utility model has the following advantages: it has low processing cost and high steering strength, thus making it suitable for high-pressure working environments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0023] Figure 2 This is a structural schematic diagram from another perspective of the embodiment;

[0024] Figure 3 This is a cross-sectional view of an embodiment;

[0025] Figure 4 This is an exploded view of an example.

[0026] In the diagram: 1. Ball core; 2. Valve stem mounting shaft; 3. Upper docking slot; 4. Linkage limit groove; 51. Steering linkage groove; 52. Rotation linkage block; 6. Docking groove; 71. Limiting hole; 72. Limiting post; 8. Support shaft; 9. Lower docking slot; 10. Centering slope; 11. Mating slope. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] refer to Figures 1 to 4 A high-pressure fixed sphere includes a ball core 1 and a valve stem mounting shaft 2, and also includes a steering linkage assembly. The ball core 1 has an upper mating slot 3 for the valve stem mounting shaft 2 to insert into. The upper mating slot 3 is a circular groove, and the valve stem mounting shaft 2 is a circular shaft. The valve stem mounting shaft 2 has a linkage limiting groove 4. When the valve stem mounting shaft 2 is inserted into the upper mating slot 3, the upper mating slot 3 and the linkage limiting groove 4 intersect. The steering linkage assembly, in conjunction with the upper mating slot 3 and the linkage limiting groove 4, establishes a steering linkage between the ball core 1 and the valve stem mounting shaft 2.

[0029] The linkage limiting groove 4 extends radially through the valve stem mounting shaft 2 and extends along the axis of the valve stem mounting shaft 2 to form an elongated strip. The steering linkage assembly includes a steering linkage groove 51 formed on the side wall of the upper docking slot 3 and a rotating linkage block 52 located at the intersection of the upper docking slot 3 and the linkage limiting groove 4 and extending into the steering linkage groove 51. There are two steering linkage grooves 51. When the valve stem mounting shaft 2 is inserted into the upper docking slot 3, the two steering linkage grooves 51 correspond precisely to the orthographic projection positions at both ends of the linkage limiting groove 4.

[0030] When the valve stem mounting shaft 2 is inserted into the upper docking slot 3, the valve stem mounting shaft 2 is provided with a limiting structure to restrict the rotation linkage block 52 from leaving the upper docking slot 3. A docking groove 6 for valve stem mounting is formed on the valve stem mounting shaft 2. The limiting structure includes a limiting hole 71 formed on the valve stem mounting shaft 2 and communicating with the bottom of the docking groove 6 and the linkage limiting groove 4, and a limiting post 72 disposed within the limiting hole 71.

[0031] It also includes a support shaft 8, and a lower mating slot 9 is formed on the ball core 1 for the support shaft 8 to be inserted into. The support shaft 8 is a round shaft, and the lower mating slot 9 is a round groove. A centering structure is formed between the lower mating slot 9 and the support shaft 8 to achieve coaxiality between the lower mating slot 9 and the support shaft 8. The centering structure includes a centering slope 10 disposed on the side wall of the lower mating slot 9 and gradually expanding along the opening of the lower mating slot 9, and a mating slope 11 formed on the support shaft 8 and cooperating with the centering slope 10.

[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A high pressure fixed ball, comprising a ball core (1) and a valve stem mounting shaft (2), characterized in that: Also include a steering linkage assembly, the ball core (1) is provided with the upper butt joint slot (3) for the valve stem installation shaft (2) insertion, the valve stem installation shaft (2) is provided with linkage limiting slot (4), when the valve stem installation shaft (2) is inserted into the upper butt joint slot (3), the upper butt joint slot (3) and linkage limiting slot (4) constitute intersection, the steering linkage assembly cooperates with the upper butt joint slot (3) and linkage limiting slot (4) to form the steering linkage between the ball core (1) and the valve stem installation shaft (2).

2. The high pressure containment sphere of claim 1, wherein: The linkage limiting slot (4) penetrates the valve stem installation shaft (2) along the radial direction of the valve stem installation shaft (2), and the linkage limiting slot (4) is arranged along the axis of the valve stem installation shaft (2) to form a long strip shape.

3. High-pressure containment sphere according to claim 1 or 2, characterized in that: The steering linkage assembly includes a steering linkage groove (51) arranged on the side wall of the upper butt joint slot (3) and a rotating linkage block (52) arranged at the intersection position of the upper butt joint slot (3) and the linkage limiting slot (4) and extending into the steering linkage groove (51).

4. The high pressure containment sphere of claim 3, wherein: The number of steering linkage grooves (51) is two, and when the valve stem installation shaft (2) is inserted into the upper butt joint slot (3), the two steering linkage grooves (51) are respectively opposite to the orthographic projection positions of the two ends of the linkage limiting slot (4).

5. The high pressure containment sphere of claim 3, wherein: When the valve stem installation shaft (2) is inserted into the upper butt joint slot (3), the valve stem installation shaft (2) is provided with a limiting structure for limiting the rotating linkage block (52) from leaving the upper butt joint slot (3).

6. The high pressure containment sphere of claim 5, wherein: The valve stem installation shaft (2) is formed with a butt joint slot (6) for installing the valve stem, and the limiting structure includes a limiting hole (71) communicating the bottom of the butt joint slot (6) with the linkage limiting slot (4) and a limiting column (72) arranged in the limiting hole (71).

7. The high pressure containment sphere of claim 1, wherein: Also include a support shaft (8), the ball core (1) is formed with the lower butt joint slot (9) for the support shaft (8) insertion, the lower butt joint slot (9) and the support shaft (8) form a centering structure for realizing the coaxiality of the lower butt joint slot (9) and the support shaft (8).

8. The high pressure containment sphere of claim 7, wherein: The centering structure includes a centering inclined surface (10) arranged on the side wall of the lower butt joint slot (9) and gradually expanding towards the opening of the lower butt joint slot (9), and a matching inclined surface (11) formed on the support shaft (8) and matched with the centering inclined surface (10).

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