Ball valve

Abstract

The utility model belongs to the technical field of valves, and discloses a ball valve. The ball valve comprises a valve body and a valve element, the valve element is arranged in the valve body, the valve body is formed by machining a straight steel pipe, the two axial ends of the valve body are rotationally sleeved with loose joint nuts respectively, and the loose joint nuts are used for being connected with an external pipeline. According to the ball valve, the valve body is formed by machining the straight steel pipe, the two ends of the valve body are connected with the external pipeline through the loose joint nuts, the valve body does not need to mill a jaw face, the two ends of the valve body do not need to turn threads, and therefore the machining amount of the valve body can be reduced, on the basis, the wall thickness of the valve body does not need to be increased, and the material cost is reduced.

Description

Technical Field

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

[0002] Ball valves are primarily used at the water inlet of hydraulic system pipelines to cut off and regulate the flow of media in the pipelines. To connect to external pipelines, existing ball valves typically require threading at both ends of the valve body and milling of flange surfaces on the valve body for ease of installation. This arrangement increases the valve body's wall thickness, thereby increasing material costs.

[0003] Therefore, it is urgent to provide a ball valve to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a ball valve, which can reduce the processing amount of the valve body and lower the material cost.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A ball valve comprises a valve body and a valve core, wherein the valve core is arranged in the valve body, and the valve body is formed by processing a straight steel pipe. The axial ends of the valve body are respectively rotatably covered with union nuts, and the union nuts are used to connect to an external pipeline.

[0007] As an optional solution, the ball valve further includes two bushings and two valve seats, each of the bushings and the valve seat is respectively arranged on both sides of the valve core, and one end of the valve seat is tightly pressed against the valve core, and the other end is tightly pressed against the corresponding bushing.

[0008] As an optional solution, the bushing is welded into the valve body.

[0009] This arrangement can achieve a stable connection between the bushing and the valve body, thereby providing a stable and reliable limit to the valve seat.

[0010] As an optional solution, the bushing is threadedly connected to the valve body.

[0011] This arrangement can also achieve a stable connection between the bushing and the valve body, thereby providing a stable and reliable limiting effect on the valve seat, and making disassembly and assembly more convenient.

[0012] As an optional solution, a first limiting groove is provided on the outer wall of the valve body along its circumference, and a second limiting groove is provided on the inner wall of the union nut at a position corresponding to the first limiting groove. The ball valve also includes a retaining ring, which can be accommodated in the first limiting groove and the second limiting groove at the same time.

[0013] The retaining ring can connect the union nut and the valve body, limit the axial outward movement of the union nut to prevent it from falling out, and at the same time enable the union nut to rotate relative to the valve body to facilitate the installation of the union nut and the external pipeline.

[0014] As an optional solution, the ball valve further includes a sealing gasket, which is arranged in the union nut and abuts against the end face of the valve body.

[0015] When the external pipeline is installed, the sealing ring forms a tight fit with the external pipeline to play a sealing role and prevent fluid leakage.

[0016] As an optional solution, the ball valve also includes an upper joint and a valve stem, the upper joint is welded to the valve body and connected to the valve body, one end of the valve stem is rotatably passed through the upper joint and connected to the valve core, and the other end of the valve stem extends out of the upper joint.

[0017] As an optional solution, a sealing ring is provided between the inner wall of the upper joint and the valve stem, which can ensure the sealing between the upper joint and the valve stem and prevent fluid leakage.

[0018] As an optional solution, one end of the valve stem extending outside the upper joint is connected to a handle.

[0019] The operator can use the operating handle to drive the valve stem to rotate, which in turn drives the valve core to rotate, to open and close the ball valve. The handle makes it easier for the operator to apply force, making the operation convenient and quick, and reducing the need for tools.

[0020] As an optional solution, the handle is sleeved onto the valve stem, and a locking nut is threadedly connected to the end of the valve stem, and the locking nut is tightened against the handle. After the handle and valve stem are tightened by the locking nut, the operating handle can drive the valve stem to rotate, and disassembly and assembly are relatively convenient.

[0021] Beneficial effects of the utility model:

[0022] The utility model provides a ball valve, the valve body of which is formed by processing a straight steel pipe, and the two ends of the valve body are connected to the external pipeline by means of union nuts. There is no need to mill the flange surface on the valve body, and there is no need to turn threads on the two ends of the valve body, thereby reducing the processing amount of the valve body. On this basis, there is no need to increase the wall thickness of the valve body, thereby reducing material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the ball valve provided by the utility model;

[0024] Figure 2 It is a cross-sectional view of the ball valve provided by the utility model.

[0025] In the picture:

[0026] 1. Valve body; 11. First limiting groove; 12. Flow channel; 2. Valve core; 21. Through hole; 3. Valve stem; 4. Union nut; 41. Second limiting groove; 5. Bushing; 6. Valve seat; 7. Retaining ring; 8. Sealing gasket; 9. Upper joint; 10. Sealing ring; 20. Handle; 30. Locking nut. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0028] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0031] This embodiment provides a ball valve, which is mainly used at the water inlet of a hydraulic system pipeline to cut off and regulate the flow of a medium in the pipeline.

[0032] like Figure 1 and Figure 2 As shown, the ball valve includes a valve body 1, a valve core 2, and a valve stem 3. The valve body 1 is provided with a flow passage 12 extending along its axial direction. The valve core 2 is spherical and is provided in the valve body 1. The valve core 2 is provided with a through hole 21 for connecting to the flow passage 12. One end of the valve stem 3 can be rotatably extended into the valve body 1 and connected to the valve core 2, and the other end extends outside the valve body 1. By rotating the valve stem 3, the valve core 2 can be driven to rotate, so that the ball valve is switched between an open state and a closed state. Specifically, when the ball valve is in the open state, the through hole 21 of the valve core 2 and the center of the flow passage 12 completely coincide to achieve fluid conduction. By rotating the valve stem 3, the valve core 2 is driven to rotate, and the overlapping area of the through hole 21 and the flow passage 12 can be adjusted, thereby adjusting the flow rate. When the through hole 21 is perpendicular to the axis of the flow passage 12, the fluid can be cut off, thereby achieving the closure of the ball valve.

[0033] To connect to external pipelines, existing ball valves typically require threading at both ends of the valve body 1 and milling a flange surface on the valve body 1 for easy installation. This arrangement increases the wall thickness of the valve body 1, thereby increasing material costs. Furthermore, when installing the ball valve, either the ball valve or the connecting pipe must be rotated to install the valve, which is not conducive to tightening the valve in tight installation conditions.

[0034] In order to solve the above problem, in this embodiment, Figure 1 and Figure 2 As shown, the valve body 1 is formed by processing a straight steel pipe, and the axial ends of the valve body 1 are rotatably covered with a union nut 4, and the union nut 4 is provided with an internal thread for connecting to an external pipeline.

[0035] As can be seen from this, the ball valve provided in this embodiment has a valve body 1 formed from a straight steel pipe, and both ends of the valve body 1 are connected to the external pipeline via union nuts 4. There is no need to mill the flange surface of the valve body 1, nor do the ends of the valve body 1 need to be threaded. This reduces the amount of machining required for the valve body 1 and, on this basis, eliminates the need to increase the wall thickness of the valve body 1, thereby reducing material costs. Furthermore, when the ball valve is installed with an external pipeline, if space is tight, the connection to the external pipeline can be achieved by rotating the union nuts 4, facilitating installation.

[0036] Furthermore, in order to realize that the union nut 4 is rotatably mounted on both axial ends of the valve body 1, as shown in FIG. Figure 2As shown, a first limiting groove 11 is defined along the circumference of the outer wall of the valve body 1, and a second limiting groove 41 is defined on the inner wall of the union nut 4 at a position corresponding to the first limiting groove 11. The ball valve further includes a retaining ring 7, which can be simultaneously received in the first limiting groove 11 and the second limiting groove 41. The retaining ring 7 connects the union nut 4 to the valve body 1, restricting axial outward movement of the union nut 4 to prevent it from disengaging, while also allowing the union nut 4 to rotate relative to the valve body 1, thereby facilitating installation of the union nut 4 with an external pipeline.

[0037] like Figure 2 As shown, the ball valve further includes a sealing gasket 8, which is disposed in the union nut 4 and abuts against the end face of the valve body 1. When the external pipeline is installed, the sealing gasket 8 forms a tight fit with the external pipeline to play a sealing role and prevent fluid leakage.

[0038] Further, if Figure 2 As shown, the ball valve further includes two bushings 5 and two valve seats 6, each of which is respectively arranged on either side of the valve core 2, and one end of the valve seat 6 is pressed against the valve core 2, and the other end is pressed against the corresponding bushing 5. In other words, the two valve seats 6 are respectively pressed against either side of the valve core 2, thereby achieving a position-limited installation of the valve core 2. The two bushings 5 are also respectively located on either side of the valve core 2, and are respectively pressed against the side of the corresponding bushing 5 away from the valve core 2, thereby achieving a position-limited installation of the two valve seats 6.

[0039] In an optional embodiment, the bushing 5 is welded in the valve body 1. This arrangement can achieve a stable connection between the bushing 5 and the valve body 1, thereby playing a stable and reliable role in limiting the valve seat 6.

[0040] In another optional embodiment, the bushing 5 can also be threadedly connected to the valve body 1. This arrangement can also achieve a stable connection between the bushing 5 and the valve body 1, thereby playing a stable and reliable limiting role on the valve seat 6, and is more convenient to disassemble and assemble.

[0041] In an optional embodiment, the valve body 1 and the bushing 5 are both formed from straight steel pipes through fine machining. Fine machining technology can achieve precise control of materials, improving product performance and quality. At the same time, fine machining technology has high processing speed and production capacity, reducing production costs and shortening processing cycles.

[0042] Further, if Figure 1 and Figure 2As shown, the ball valve also includes an upper joint 9, which is separated from the valve body 1 for easy processing. The axis of the upper joint 9 is perpendicular to the axis of the valve body 1. The upper joint 9 is welded to the valve body 1 and communicates with the valve body 1. One end of the valve stem 3 rotatably passes through the upper joint 9 and is connected to the valve core 2, and the other end of the valve stem 3 extends outside the upper joint 9. This arrangement can achieve a stable connection between the upper joint 9 and the valve body 1, while ensuring the reliability of the seal between the upper joint 9 and the valve body 1.

[0043] like Figure 2 As shown, a sealing ring 10 is provided between the inner wall of the upper joint 9 and the valve stem 3. The sealing ring 10 is specifically an O-ring, thereby ensuring the sealing between the upper joint 9 and the valve stem 3 and preventing fluid leakage.

[0044] Further, if Figure 1 and Figure 2 As shown, the end of the valve stem 3 extending from the upper connector 9 is connected to a handle 20. The operator can operate the handle 20 to rotate the valve stem 3, thereby rotating the valve core 2 to open and close the ball valve. The provision of the handle 20 facilitates the operator's application of force, making operation convenient and quick, and reducing the need for tools.

[0045] Specifically, if Figure 1 and Figure 2 As shown, the handle 20 is sleeved on the valve stem 3 and abuts against the stepped surface of the valve stem 3. The end of the valve stem 3 is threadedly connected to a locking nut 30, which is tightly abutted against the handle 20. After the handle 20 and the valve stem 3 are tightened by the locking nut 30, the operating handle 20 can drive the valve stem 3 to rotate, and disassembly is relatively convenient.

[0046] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A ball valve, comprising a valve body (1) and a valve core (2), wherein the valve core (2) is arranged in the valve body (1), characterized in that: The valve body (1) is formed by processing a straight steel pipe. The two axial ends of the valve body (1) are rotatably fitted with union nuts (4), and the union nuts (4) are used to connect to an external pipeline.

2. The ball valve according to claim 1, characterized in that The ball valve further comprises two bushings (5) and two valve seats (6), each of the bushings (5) and the valve seat (6) being respectively arranged on both sides of the valve core (2), and one end of the valve seat (6) being pressed against the valve core (2), and the other end being pressed against the corresponding bushing (5).

3. The ball valve according to claim 2, characterized in that: The bushing (5) is welded inside the valve body (1).

4. The ball valve according to claim 2, characterized in that The bushing (5) is threadedly connected to the valve body (1).

5. The ball valve according to any one of claims 1 to 4, characterized in that: A first limiting groove (11) is provided on the outer wall of the valve body (1) along its circumference, and a second limiting groove (41) is provided on the inner wall of the union nut (4) at a position corresponding to the first limiting groove (11). The ball valve also includes a retaining ring (7), and the retaining ring (7) can be simultaneously accommodated in the first limiting groove (11) and the second limiting groove (41).

6. The ball valve according to any one of claims 1 to 4, characterized in that: The ball valve further comprises a sealing gasket (8), which is arranged in the union nut (4) and abuts against the end face of the valve body (1).

7. The ball valve according to any one of claims 1 to 4, characterized in that: The ball valve further comprises an upper joint (9) and a valve stem (3), wherein the upper joint (9) is welded to the valve body (1) and communicates with the valve body (1), one end of the valve stem (3) is rotatably passed through the upper joint (9) and connected to the valve core (2), and the other end of the valve stem (3) extends out of the upper joint (9).

8. The ball valve according to claim 7, characterized in that A sealing ring (10) is provided between the inner wall of the upper joint (9) and the valve stem (3).

9. The ball valve according to claim 7, characterized in that: One end of the valve stem (3) extending outside the upper joint (9) is connected to a handle (20).

10. The ball valve according to claim 9, characterized in that The handle (20) is sleeved on the valve stem (3), and the end of the valve stem (3) is threadedly connected with a locking nut (30), and the locking nut (30) is tightly pressed against the handle (20).

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