Ball valve support connecting structure

Abstract

The application belongs to the field of valve devices and specifically discloses a ball valve support connecting structure which comprises two connecting flanges and at least two fasteners; one of the two connecting flanges is arranged on a valve body, and the other is arranged on a support; at least two mounting openings are formed in the edge of each connecting flange, the two connecting flanges are arranged in abutment, and two corresponding mounting openings are communicated to form a mounting channel; and the fastener penetrates through the mounting channel and locks the two connecting flanges. By arranging corresponding U-shaped openings in the edges of the two abutted connecting flanges to form a mounting channel and locking by means of the fastener penetrating through the channel, the process of machining a threaded hole on the valve body or the support body is effectively saved, the machining cost is significantly reduced, and the risk of connection failure caused by corrosion of the threaded hole is avoided.

Description

Technical Field

[0001] This application belongs to the field of valve devices, and more specifically, relates to a ball valve support connection structure. Background Technology

[0002] A ball valve is a type of valve that achieves flow control through a right-angle rotary structure. It mainly consists of an actuator (electric or pneumatic) and a ball valve body. Its core components include the valve core, valve seat, seals, and drive unit. By changing the rotation angle of the valve core, the cross-sectional area of ​​the medium flow is adjusted to achieve precise flow control.

[0003] The valve body and bracket of the existing ball valve are fastened together by bolts. This involves drilling and tapping threaded holes in the valve body or drilling bolt holes in the bracket. During the subsequent painting or powder coating process of the valve body or bracket, thread rewinding or hole protection is required, which increases machining and protection costs. Furthermore, if the hole protection is not done properly, there is a risk of hole corrosion, which may lead to poor connection of the bracket. Utility Model Content

[0004] In view of the defects or improvement needs of the prior art, this application provides a ball valve bracket connection structure, which aims to solve the technical problems of high machining costs caused by drilling threaded holes in the valve body or bracket in the prior art, and insufficient connection stability due to possible hole corrosion.

[0005] This application provides a ball valve bracket connection structure, which includes two connecting flanges and at least two fasteners; one of the two connecting flanges is disposed on the valve body and the other is disposed on the bracket; each connecting flange has at least two mounting openings formed on its edge, the two connecting flanges are mated together, and the two corresponding mounting openings are connected to form a mounting channel; the fasteners pass through the mounting channel and lock the two connecting flanges.

[0006] As a further preferred embodiment, the mounting openings are evenly distributed along the edge of the connecting flange.

[0007] As a further preferred embodiment, the fastener includes a locking bolt and a nut, the shank of the locking bolt extending through the mounting channel, and the head of the locking bolt and the nut located at opposite ends of the mounting channel.

[0008] As a further preferred embodiment, the inner wall of the mounting opening includes: The main body segment defines an installation space, and the fastener passes through the installation space; The extension section comprises two sections located on both sides of the main body section, and the two extension sections together define a demolding notch.

[0009] As a further preferred embodiment, the main body segment is constructed as an arc segment, the extension segment is constructed as a straight line segment, and the two straight line segments are symmetrically arranged on both sides of the arc segment, and the straight line segments and the arc segment are tangent to each other.

[0010] As a further preferred embodiment, the diameter of the arc segment is in the range of D1, 12mm ≤ D1 ≤ 13.2mm; and / or, In the direction away from the center of the arc segment, the distance between the two straight segments gradually increases, and there is an included angle θ between the two straight segments, where 2°≤θ≤3°.

[0011] As a further preferred embodiment, the connecting flange on the valve body is a first flange, and the connecting flange on the bracket is a second flange. The first flange has a limiting portion on the side opposite to the second flange, and / or the second flange has a limiting portion on the side opposite to the first flange. The limiting portion is configured to limit the end of the fastener.

[0012] As a further preferred embodiment, the limiting portion includes limiting stops disposed on both sides of the mounting opening.

[0013] As a further preferred embodiment, the limiting part includes a limiting groove disposed on the end face of the connecting flange, the limiting groove being arc-shaped and coaxially disposed with the arc segment; the diameter D2 of the limiting groove is 19.4mm≤D2≤19.8mm.

[0014] As a further preferred embodiment, both connecting flanges are provided with limiting portions, and the limiting portions on the two connecting flanges are different.

[0015] In summary, compared with the prior art, the technical solutions conceived in this application have the following main technical advantages: 1. An installation channel is formed by connecting two flanges with installation openings and locking them with through fasteners, creating a connection method that eliminates the need to machine threaded holes on the valve body or bracket. This avoids the high cost and risk of corrosion associated with machining threaded holes, and the connection method is convenient to operate, easy to maintain, and reliable.

[0016] 2. By evenly distributing the mounting openings on the connecting flange, the clamping force generated when the fasteners are tightened is evenly distributed across the entire contact surface of the flange, effectively preventing poor sealing or deformation of the flange surface due to uneven force, thereby improving the stability and sealing reliability of the connection.

[0017] 3. The diameter of the arc segment is precisely controlled at 12.6±0.6mm to ensure that it can perfectly fit the standard M12 bolt. This ensures that the bolt can easily pass through the assembly gap while maximizing the support contact area, thus ensuring the accuracy and strength of the connection.

[0018] 4. The installation opening is designed as a flared shape with a slight angle, which plays an effective guiding role during installation. It allows fasteners to slide into place easily even with a certain degree of centering error, reducing the requirements for installation accuracy and improving assembly efficiency and fault tolerance.

[0019] 5. The limiting part can constrain one end of the fastener to prevent it from rotating or shifting during installation or use, simplifying single-person operation and enhancing the vibration resistance and assembly convenience of the connection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a ball valve structure assembled with the ball valve bracket connection structure provided in the embodiments of this application; Figure 2 This is a schematic diagram of a ball valve bracket connection structure provided in an embodiment of this application; Figure 3 This is a top view schematic diagram of a ball valve bracket connection structure provided in this application embodiment, in which the second flange is not designed with a limiting groove; Figure 4 This is a top view schematic diagram of the second flange design limiting groove in a ball valve bracket connection structure provided in an embodiment of this application; In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 10. First flange; 10a. Mounting channel; 11. First limiting part; 20. Second flange; 21. Second limiting part; 101. First mounting opening; 201. Second mounting opening; A. Main body section; B. Extension section; C. Central shaft surface; 200. Fastener; 210. Locking bolt; 211. Rod; 212. Head; 220. Nut; 30. Valve body; 40. Bracket. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] In the existing technology, threaded holes are drilled and tapped on the valve body or bolt holes are drilled on the bracket. During the subsequent painting or powder coating process of the valve body or bracket, thread rewinding or hole protection is required, which increases machining and protection costs. Furthermore, if the hole protection is not done properly, there is a risk of hole corrosion, which may lead to poor connection of the bracket.

[0023] To address the aforementioned problems, this application provides a ball valve support connection structure, such as... Figure 1The image shows the overall structure of a ball valve that uses the aforementioned ball valve bracket connection structure; It includes two connecting flanges and at least two fasteners 200; one of the two connecting flanges is disposed on the valve body 30 and the other is disposed on the bracket 40; each of the two connecting flanges has at least two mounting openings formed on its edge, the two connecting flanges are mated together, and the two corresponding mounting openings are connected to form a mounting channel 10a; the fasteners 200 pass through the mounting channel 10a and lock the two connecting flanges.

[0024] In one optional embodiment of this application, two mounting openings are formed on the edge of each connecting flange, and the two mounting openings are evenly distributed on the edge of the connecting flange. It is understood that in other embodiments, the number of mounting openings on the connecting flange may be three or more other numbers, which will not be exhaustive here. Preferably, the mounting openings are directly formed on the corresponding parts by precision casting. This solution, through the uniform arrangement of installation openings on the connecting flange, ensures that the clamping force generated when the fasteners are tightened is evenly distributed across the entire contact surface of the flange, effectively preventing poor sealing or deformation of the flange surface due to uneven force, thereby improving the stability and sealing reliability of the connection.

[0025] For ease of description and distinction, combined with Figure 2 and Figure 3 As shown, the two connecting flanges are named the first flange 10 and the second flange 20, respectively. The first flange 10 is mounted on the valve body 30, and the second flange 20 is mounted on the bracket 40. The edge of the first flange 10 forms two first mounting openings 101, and the edge of the second flange 20 forms two corresponding second mounting openings 201.

[0026] In this embodiment, the fastener 200 includes a locking bolt 210 and a nut 220. The shank 211 of the locking bolt 210 passes through the mounting channel 10a, and the head 212 of the locking bolt 210 and the nut 220 are located at the two ends of the mounting channel 10a, respectively. By using standard bolts and nuts as fasteners, a common and reliable locking mechanism is formed, which not only provides sufficient clamping force to ensure connection stability, but also makes it easy to purchase and replace standard parts, reducing manufacturing and maintenance costs, and facilitating installation and removal using general tools.

[0027] Combination Figure 4 As shown, the structures of the first mounting opening 101 and the second mounting opening 201 are substantially the same or identical. Taking the second mounting opening 201 as an example, its inner wall includes a main body section A and an extension section B. The main body section A defines the mounting space, and the fastener 200 passes through the mounting space. There are two extension sections B, which are located on both sides of the main body section A. The two extension sections B together define the demolding notch.

[0028] The two extension sections B together define the demolding notch, which facilitates the removal of the mold during the casting process of the valve body or bracket.

[0029] For example, the installation opening can be U-shaped, V-shaped, or other shapes.

[0030] Specifically, the main body segment A is constructed as an arc segment, and the extension segment B is constructed as a straight segment. The two straight segments are symmetrically arranged on both sides of the arc segment, and the straight segments and the arc segment are tangent. This specific geometric design allows the inner wall of the installation opening to better fit with the rod portion 211 of the locking bolt 210. The arc segment provides a support surface, the straight segment is easy to process and guides the bolt to slide in, and the tangent design ensures a smooth stress transition, reduces stress concentration, and improves the strength and durability of the opening.

[0031] Preferably, the diameter D1 of the arc segment is in the range of 12mm≤D1≤13.2mm. Precisely controlling the diameter of the arc segment within the above range aims to make it perfectly compatible with standard M12 bolts. This ensures that the assembly gap allows the M12 bolts to be easily inserted while maximizing the support contact area, thus ensuring the accuracy and strength of the connection.

[0032] In the direction away from the center of the arc segment, the distance between the two straight segments gradually increases, and there is an included angle θ between the two straight segments, 2°≤θ≤3°. The above design makes the installation opening into a flared shape with a small included angle, which plays an effective guiding role when installing bolts. It allows the fastener 200 to slide into place easily even with a certain centering error, reducing the requirements for installation accuracy and improving assembly efficiency and fault tolerance.

[0033] To facilitate limiting the end of the fastener 200, in this embodiment, at least one connecting flange is provided with a limiting part on the side opposite to the other connecting flange. The limiting part is configured to limit the end of the fastener. That is, in some embodiments, only the first flange 10 is provided with a limiting part, and the second flange 20 is not provided with one; in other embodiments, only the second flange is provided with a limiting part, and the first flange 10 is not provided with one; in other embodiments, both the first flange 10 and the second flange 20 are provided with limiting parts. This embodiment adopts this method.

[0034] Specifically, a first limiting part 11 is provided on the side of the first flange 10 away from the second flange 20; a second limiting part 21 is provided on the side of the second flange 20 away from the first flange 10; the structures of the first limiting part 11 and the second limiting part 21 can be the same or different. The possible solutions include, but are not limited to, limiting flanges formed on both sides of the corresponding mounting opening and limiting grooves formed on the end face of the corresponding connecting flange. Since the fastener 200 adopts the locking bolt 210 and nut 220 in this embodiment, that is, there is a structural difference between the two ends of the fastener 200. Specifically, the head 211 of the locking bolt 210 is generally round, and the nut is generally designed as a hexagonal prism. Therefore, in this embodiment, the first limiting part 11 and the second limiting part 21 adopt different structural designs.

[0035] Taking the second flange 20 and the head 211 of the locking bolt 210 as an example, and the first flange 10 and the nut 220 as an example, the first limiting part 11 is designed as a limiting stop, preferably two relatively parallel limiting stops. The width of the two limiting stops is adapted to the width of the nut 220. During installation, when the locking bolt 210 is rotated, the nut 220 is limited by the limiting stops and cannot be rotated, thus facilitating installation and disassembly.

[0036] Correspondingly, the second limiting part 21 is designed as a limiting groove on the end face of the second flange 20. Preferably, in this embodiment, the limiting groove is circular and coaxially arranged with the arc segment. The diameter D2 of the limiting groove is 19.6±0.2mm, which is convenient to accommodate the head of the standard M12 bolt. The tolerance range of 0.2mm is small, that is, it allows for a very small fitting clearance. This allows the head of the standard M12 bolt to be inserted smoothly, while preventing it from undergoing radial displacement inside. The cooperation between the first limiting part 11 and the second limiting part 21 effectively avoids the phenomenon of nut slippage and bolt loosening when the bolt is tightened.

[0037] In summary, the ball valve bracket connection structure provided in this application embodiment forms an installation channel by setting corresponding U-shaped openings on the edges of the two mating connection flanges, and locking them with fasteners that pass through the channel. This effectively eliminates the need to process threaded holes on the valve body or bracket body, thereby significantly reducing machining costs and avoiding the risk of connection failure caused by corrosion of the threaded holes. At the same time, this structure uses limiting parts to constrain the fasteners and optimizes the guidance and fitting dimensions of the openings, making the assembly process more convenient and reliable.

[0038] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0039] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] Those skilled in the art will readily understand that the above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A ball valve support connection structure, characterized in that, It includes two connecting flanges and at least two fasteners (200); one of the two connecting flanges is disposed on the valve body (30) and the other is disposed on the bracket (40); each of the connecting flanges has at least two mounting openings formed on its edge, the two connecting flanges are mated together, and the corresponding mounting openings are connected to form a mounting channel (10a); the fasteners (200) pass through the mounting channel (10a) and lock the two connecting flanges.

2. The ball valve bracket connection structure according to claim 1, characterized in that, The mounting openings are evenly distributed along the edge of the connecting flange.

3. The ball valve bracket connection structure according to claim 1, characterized in that, The fastener (200) includes a locking bolt (210) and a nut (220), the shank (211) of the locking bolt (210) passing through the mounting channel (10a), and the head (212) of the locking bolt (210) and the nut (220) located at the two ends of the mounting channel (10a), respectively.

4. The ball valve bracket connection structure according to any one of claims 1 to 3, characterized in that, The inner wall of the mounting opening includes: The main body segment (A) defines an installation space, and the fastener (200) passes through the installation space; Extension segments (B), there are two extension segments (B) and they are disposed on both sides of the main body segment (A), the two extension segments (B) together define the demolding notch.

5. The ball valve bracket connection structure according to claim 4, characterized in that, The main body segment (A) is constructed as an arc segment, and the extension segment (B) is constructed as a straight line segment. The two straight line segments are symmetrically arranged on both sides of the arc segment, and the straight line segments and the arc segment are tangent to each other.

6. The ball valve bracket connection structure according to claim 5, characterized in that, The diameter of the arc segment is in the range of D1, 12mm ≤ D1 ≤ 13.2mm; and / or, In the direction away from the center of the arc segment, the distance between the two straight segments gradually increases, and there is an included angle θ between the two straight segments, where 2°≤θ≤3°.

7. The ball valve bracket connection structure according to claim 5, characterized in that, The connecting flange on the valve body (30) is a first flange (10), and the connecting flange on the bracket (40) is a second flange (20). The first flange (10) has a limiting part on the side away from the second flange (20), and / or the second flange (20) has a limiting part on the side away from the first flange (10). The limiting part is configured to limit the end of the fastener (200).

8. The ball valve bracket connection structure according to claim 7, characterized in that, The limiting part includes limiting stops disposed on both sides of the mounting opening.

9. The ball valve bracket connection structure according to claim 7, characterized in that, The limiting part includes a limiting groove disposed on the end face of the connecting flange. The limiting groove is arc-shaped and coaxially disposed with the arc segment. The diameter of the limiting groove is D2, and 19.4mm≤D2≤19.8mm.

10. The ball valve bracket connection structure according to claim 7, characterized in that, Both connecting flanges are provided with limiting parts, and the structures of the limiting parts of the two connecting flanges are different.

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