Ball valve with flange

Abstract

The utility model discloses a ball valve with flanges, which comprises a valve body, and two ports of the valve body, which are communicated with the outside, are respectively provided with flanges and connecting threads; the diameter of the mounting hole in the flange is greater than that of the connecting bolt; the included angle between the axis of the flange and the axis of the valve body is larger than 0 degree and smaller than 180 degrees. The connecting thread is an external thread and is provided with a clamping sleeve nut matched with the external thread; the device can overcome machining errors, achieve installation and achieve connection sealing performance.

Description

Technical Field

[0001] This utility model relates to ball valves, and more particularly to a ball valve with a flange. Background Technology

[0002] A ball valve is a commonly used fluid control element, typically installed in fluid pipelines or on fluid storage containers. Its principle is to use a ball with a circular channel as the opening and closing element. The ball opening and closing element rotates around an axis perpendicular to the pipeline as the valve stem rotates, thereby realizing the opening and closing control of the fluid pipeline.

[0003] In existing technologies, most ball valves have flanges at both inlet and outlet ends or threads at both ends. In ball valves with threads at both ends, if the two pipelines to be connected are already fixed, for example, if the two pipelines are coaxial, but the threads at both ends of the ball valve are misaligned due to machining reasons, the ball valve will be difficult to install in the pipeline. Although flanges at both ends can overcome the above problem, the connection sealing is poor. Secondly, with threads at both ends, it is not convenient to adjust the orientation of the ball valve control handle when either pipeline to be connected is fixed, or when there is an angle between the axis of the two ports and the overall axis of the ball valve. In this case, the port orientation cannot be adjusted because the port connected to the fixed pipeline must be tightened with threads, and the rotation angle of the ball valve is fixed. Therefore, the final orientation of the handle or the other port is fixed and cannot be adjusted, which cannot adapt to more complex installation environments and has low flexibility in installation and use. Summary of the Invention

[0004] Purpose of the utility model: The purpose of this utility model is to provide a flanged ball valve that can overcome processing errors, achieve installation, and ensure connection sealing.

[0005] Technical solution: The present invention provides a ball valve with a flange, comprising a valve body, wherein the two ports of the valve body communicating with the outside are respectively provided with flanges and connecting threads; the diameter of the mounting hole on the flange is larger than the diameter of the connecting bolt.

[0006] Based on the above scheme, the two ports of the ball valve are respectively equipped with flanges and connecting threads, and the mounting hole diameter of the flange is larger than the diameter of the connecting bolt. In this way, when two coaxial pipelines need to be connected, even if the flange and connecting thread are not coaxial due to machining errors, within a certain range, the radial movement of the ball valve allows the threaded end to connect to the corresponding pipeline. The flange, because its mounting hole diameter is larger than that of the bolt, can also connect to its corresponding pipeline, thereby overcoming machining errors and achieving installation. Furthermore, the use of threads and flanges at both ends ensures a good sealing connection at the threaded end, while the sealing performance at the flange end is slightly worse. If both ends are flanged, the sealing performance at both ends will be relatively poor. Compared with ball valves that use threads or flanges at both ends, this ball valve can overcome machining errors to achieve installation while also ensuring a good sealing performance.

[0007] Preferably, the angle between the axis of the flange and the axis of the valve body is greater than 0° and less than 180°.

[0008] If the angle between the flange axis and the valve body axis is within the above range, meaning the flange axis and the valve body axis are not parallel, the orientation of the ball valve connection thread port can be adjusted by rotating the flange. This way, as long as the pipeline to be connected to the connection thread port is not fixed, the orientation of the port can be adjusted, and the orientation of the handle can also be adjusted.

[0009] Preferably, the connecting thread is an external thread, and a matching ferrule nut is provided.

[0010] Because existing pipeline connections commonly use compression fittings and nuts to ensure the sealing of the connection, the connection thread is set to external thread to avoid the need for an external threaded pipe when using internal thread, thus simplifying the structure of the device.

[0011] Preferably, the flange is welded to the port of the valve body.

[0012] Welding ensures a tight seal at the joint.

[0013] Preferably, the flange and valve body connection end is provided with a connecting pipe with an outer wall in the shape of an annular stepped shape.

[0014] The flange and valve body connection end is provided with a connecting pipe with an outer wall in the shape of an annular stepped shape to facilitate welding and positioning.

[0015] Preferably, the valve body is provided with a ball-shaped opening and closing element, and the valve body is provided with a handle for controlling the rotation of the ball-shaped opening and closing element.

[0016] Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are as follows: By setting the ports of the ball valve that connect to the outside world as flanges and connecting threads respectively, and the diameter of the mounting hole of the flange is larger than the diameter of the connecting bolt, the ball valve can have a certain radial adjustment space during installation, which can overcome processing errors, and the connection sealing is also taken into account even though only one end is flanged; secondly, the angle between the flange axis and the valve body axis is within the set range, and the orientation of the port with connecting threads and the handle can also be flexibly adjusted. Attached Figure Description

[0017] Figure 1 This is a front view of the ball valve in Example 1;

[0018] Figure 2 This is a top view of the ball valve in Example 2. Detailed Implementation

[0019] Example

[0020] like Figure 1As shown, the ball valve with flange described in this embodiment includes a valve body 1. The two ports of the valve body 1 that communicate with the outside are respectively provided with flanges 2 and connecting threads 3; the diameter of the mounting hole on the flange 2 is larger than the diameter of the connecting bolt.

[0021] The valve body 1 is provided with a ball-shaped opening and closing component 4. The valve body 1 is provided with a handle 5 for controlling the rotation of the ball-shaped opening and closing component 4. The valve body 1 is provided with a cavity that matches the ball-shaped opening and closing component 4 and has ports at both ends of the axial direction that connect to the outside and the cavity. The ball-shaped opening and closing component 4 is provided with a through hole that is parallel to the axis of the valve body 1. By rotating the handle 5, the ball-shaped opening and closing component 4 is controlled to rotate in the cavity, thereby controlling whether the through hole connects to the two ports of the valve body 1.

[0022] The flange 2 is connected to one of the ports of the valve body 1 by welding. The connection end of the flange 2 and the port is provided with a connecting pipe with an annular stepped outer wall. For example, if the flange 2 is connected to the left port, the outer wall of the connecting pipe is segmented in a stepped shape. Each segment is annular and only has a different outer diameter, but the inner diameter is the same. The outer diameter of the steps gradually decreases from left to right. The left port of the valve body 1 is also provided with a matching annular stepped groove to achieve positioning of the two and facilitate welding. In this embodiment, the axes of the flange 2 and the valve body 1 are parallel to each other and are actually coaxial.

[0023] Flange 2 is provided with multiple axially spaced annular mounting holes. The diameter of the mounting holes is larger than the diameter of the connecting bolts. This means that even if the position of the bolts is fixed, flange 2 has a certain amount of space for radial movement, which means that valve body 1 has a certain amount of space for radial adjustment during installation.

[0024] The connecting thread 3 can be set at the right end of the valve body 1. The connecting thread 3 can be an external thread or an internal thread. If an external thread is used, a matching ferrule nut can be set for connecting the pipeline.

[0025] The ball valve is equipped with flange 2 and connecting thread 3 at both ends. If the pipeline to be connected to the connecting thread 3 is not fixed, flange 2 can be rotated first to adjust handle 5 to a suitable orientation. Then, the left end of valve body 1 is connected to the pipeline to be connected through flange 2, and the right end pipeline is connected through connecting thread 3. Since the position of the pipeline at this end is not fixed and can be adjusted, the pipeline at this end can be rotated to tighten it without rotating valve body 1. This avoids the problem that the required rotation angle of valve body 1 and the orientation of handle 5 cannot be unified.

[0026] Example

[0027] like Figure 2As shown, the same parts of the flanged ball valve described in this embodiment as in Embodiment 1 will not be repeated. The only difference is that the angle between the axis of the flange 2 and the axis of the valve body 1 is greater than 0° and less than 180°, that is, the axis of the flange 2 is not parallel to the axis of the valve body 1. In this embodiment, the axis of the flange 2 forms a 90° angle with the axis of the valve body 1. In this way, when the pipeline to be connected at the right end of the valve body 1, that is, the end where the connecting thread 3 is located, is not fixed, that is, when the position of the pipeline is adjustable, the left end where the flange 2 is located can be fixed first. At this time, the right end and the orientation of the handle 5 can be adjusted by rotating the flange 2 to adapt to the complex installation environment.

Claims

1. A flanged ball valve, comprising a valve body (1), characterized in that: The valve body (1) has two ports that connect to the outside world, which are respectively provided with flanges (2) and connecting threads (3); the diameter of the mounting hole on the flange (2) is larger than the diameter of the connecting bolt.

2. A flanged ball valve according to claim 1, characterized in that: The angle between the axis of the flange (2) and the axis of the valve body (1) is greater than 0° and less than 180°.

3. A flanged ball valve according to claim 1, characterized in that: The connecting thread (3) is an external thread and is provided with a matching ferrule nut.

4. A flanged ball valve according to claim 1, characterized in that: The connecting thread (3) is an internal thread.

5. A flanged ball valve according to claim 1, characterized in that: The flange (2) is welded to the port of the valve body (1).

6. A flanged ball valve according to claim 5, characterized in that: The flange (2) and valve body (1) are connected by a connecting pipe with an outer wall in the shape of an annular stepped structure.

7. A flanged ball valve according to claim 1, characterized in that: The valve body (1) is provided with a ball opening and closing component (4), and the valve body (1) is provided with a handle (5) for controlling the rotation of the ball opening and closing component (4).

8. A flanged ball valve according to claim 1, characterized in that: The axis of the flange (2) is parallel to the axis of the valve body (1).

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