Connecting flange capable of preventing connecting bolt from loosening

Abstract

The utility model discloses a connecting flange capable of preventing a connecting bolt from loosening, and relates to the technical field of flanges. The device comprises a sleeve; the outer wall of the flange plate is fixedly connected with the outer wall of the sleeve; the outer wall of the adjusting wheel is in sliding connection with the inner wall of the flange plate; an adjusting block; the flange plate comprises a hollow plate, a communicating hole is formed in the wall of the hollow plate, a sliding groove is formed in the inner wall of the hollow plate, the inner wall of the hollow plate is fixedly connected with a magnetic attraction piece through a limiting groove, and the limiting groove is formed in the wall of the hollow plate. And the adjusting blocks relatively extrude to drive the adjusting wheels to rotate, so that friction plates on the adjusting wheels are matched with the inner walls of the communicating holes to clamp the bolts, the side faces of the bolts are subjected to clamping force, and then the purpose of preventing the bolts from loosening is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, and particularly relates to a connecting flange capable of preventing connecting bolts from loosening. Background Art

[0002] A flange is a disc-shaped part used to connect pipelines, pipe fittings or equipment. It usually has bolt holes and can tightly connect two flanges through bolts, playing a role in sealing and connection. Flanges are widely used in various industrial fields such as petrochemical and electric power, which can ensure the safe and stable operation of the pipeline system and effectively prevent leakage. Its materials are diverse, including carbon steel, stainless steel, etc., and can be selected according to different working conditions and requirements.

[0003] In the prior art, connecting flanges are used in pairs in most cases. After aligning the bolt holes on the flange discs, they are fixed through bolts. Due to the vibration during equipment operation or external impacts, the bolts will gradually loosen after long-term action. At the same time, large temperature fluctuations cause differences in thermal expansion and contraction between the flange and the bolts, resulting in loosening, making the bolts in the connecting flange prone to loosening, thereby affecting the connection effect of the flange. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the utility model to solve its technical problems is: a connecting flange capable of preventing connecting bolts from loosening, including: a sleeve; a flange disc, the outer wall of the flange disc is fixedly connected to the outer wall of the sleeve; an adjusting wheel, the outer wall of the adjusting wheel is slidably connected to the inner wall of the flange disc; an adjusting block; the flange disc includes a hollow disc, a communication hole is opened in the wall of the hollow disc, a sliding groove is opened in the inner wall of the hollow disc, a magnetic attraction sheet is fixedly connected to the inner wall of the hollow disc through a limiting groove, and the limiting groove is opened in the wall of the hollow disc. A sliding ring is fixedly connected to the inner wall of the hollow disc, and a stepped groove is opened on the side wall inside the hollow disc. By setting the flange disc, the adjusting wheel and the adjusting block, after two connecting flanges are fitted together, the adjusting block relatively presses to drive the adjusting wheel to rotate, so that the friction sheet on the adjusting wheel cooperates with the inner wall of the communication hole to clamp the bolt, enabling the side of the bolt to be subjected to a clamping force, thereby preventing the bolt from loosening.

[0005] Preferably, the adjusting wheel includes a rotating ring, a friction sheet is fixedly connected to the inner wall of the rotating ring through a movable groove, and a rotating hole is opened at the central axis of the outer wall of the movable groove. The outer wall of the hollow disc is fixedly connected to the outer wall of the sleeve through a stepped groove. The side wall of the rotating hole is slidably connected to the outer wall of the sliding ring, and the outer wall of the rotating ring is slidably connected to the inner wall of the hollow disc.

[0006] Preferably, the adjusting block includes an arc-shaped block. A metal sheet is fixedly connected to the outer wall of the arc-shaped block. An inclined surface groove is formed in the outer wall of the arc-shaped block. The outer wall of the arc-shaped block is fixedly connected to the outer wall of the rotating ring. The outer wall of the arc-shaped block is slidably connected to the outer wall of the sliding groove. The outer wall of the metal sheet is slidably connected to the outer wall of the limiting groove. The outer wall of the metal sheet is fixedly connected to the outer wall of the rotating ring. The metal sheet on the adjusting block is matched with the magnetic attracting sheet. When the flange is completely attached, the position stability of the adjusting block is further increased, making the connection of the flange more stable.

[0007] The beneficial effects of the present utility model are as follows:

[0008] 1. By providing a flange, an adjusting wheel and an adjusting block, when two connecting flanges are attached, the adjusting block is relatively extruded to drive the adjusting wheel to rotate, so that the friction sheet on the adjusting wheel cooperates with the inner wall of the communication hole to clamp the bolt, so that the side of the bolt is subjected to a clamping force, thereby preventing the bolt from loosening.

[0009] 2. By providing the metal sheet and the magnetic attracting sheet on the adjusting block to cooperate, when the flange is completely attached, the position stability of the adjusting block is further increased, making the connection of the flange more stable. Description of the Drawings

[0010] Figure 1 is the front view of the present utility model;

[0011] Figure 2 is the cross-sectional view of the present utility model;

[0012] Figure 3 is the structural schematic diagram of the flange of the present utility model;

[0013] Figure 4 is the structural schematic diagram of the adjusting wheel of the present utility model;

[0014] Figure 5 is the structural schematic diagram of the adjusting block of the present utility model.

[0015] In the figure: 1, sleeve; 2, flange; 3, adjusting wheel; 4, adjusting block; 21, hollow disk; 22, communication hole; 23, sliding groove; 24, limiting groove; 25, magnetic attracting sheet; 26, sliding ring; 27, stepped groove; 31, rotating ring; 32, movable groove; 33, friction sheet; 34, rotating hole; 41, arc-shaped block; 42, metal sheet; 43, inclined surface groove. Detailed Embodiments

[0016] The following further describes the present utility model in detail in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0017] Embodiment: Please refer to Figure 1 - Figure 5 , the present utility model provides a technical solution: a connecting flange capable of preventing loosening of connecting bolts, including: a sleeve 1; a flange plate 2, the outer wall of the flange plate 2 is fixedly connected to the outer wall of the sleeve 1; an adjusting wheel 3, the outer wall of the adjusting wheel 3 is slidably connected to the inner wall of the flange plate 2; an adjusting block 4; the flange plate 2 includes a hollow plate 21, a communication hole 22 is formed in the wall of the hollow plate 21, a sliding groove 23 is formed in the inner wall of the hollow plate 21, a magnetic attraction piece 25 is fixedly connected to the inner wall of the hollow plate 21 through a limiting groove 24, and the limiting groove 24 is formed in the wall of the hollow plate 21, a sliding ring 26 is fixedly connected to the inner wall of the hollow plate 21, a stepped groove 27 is formed in the side wall inside the hollow plate 21. When the connecting flange is connected, the part of the sleeve 1 protruding is sleeved on the pipeline to be connected, the sleeve 1 fixes the flange plate 2 through the stepped groove 27, and then the two flange plates 2 are mutually attached. After the communication holes 22 are aligned, they are fixed by bolts.

[0018] The adjusting wheel 3 includes a rotating ring 31, a friction piece 33 is fixedly connected to the inner wall of the rotating ring 31 through a movable groove 32, and a rotating hole 34 is formed in the middle axis of the outer wall of the movable groove 32. The outer wall of the hollow plate 21 is fixedly connected to the outer wall of the sleeve 1 through the stepped groove 27. The side wall of the rotating hole 34 is slidably connected to the outer wall of the sliding ring 26, and the outer wall of the rotating ring 31 is slidably connected to the inner wall of the hollow plate 21. When the connecting flanges approach each other, the arc-shaped blocks 41 are relatively pushed through the inclined surface grooves 43, so that the side of the arc-shaped block 41 close to the movable groove 32. Since the arc-shaped block 41 and the rotating ring 31 on the adjusting wheel 3 are mutually fixed, when the arc-shaped block 41 moves, it will drive the rotating ring 31 to move, so that the rotating hole 34 of the rotating ring 31 slides along the surface of the sliding ring 26. When the flange plates 2 gradually approach, bolts for connection are inserted into the communication holes 22, and then the flange plates 2 are continuously pushed closer. At this time, the arc-shaped blocks 41 continue to push each other until the arc-shaped block 41 reaches one side of the limiting groove 24. At this time, the arc-shaped block 41 enters the sliding groove 23 of the opposite hollow plate 21, so that the hollow plates 21 can be attached. At this time, the movable groove 32 moves with the rotating ring 31 and drives the friction piece 33 to press against the outer wall of one side of the bolt, and by applying pressure, the reaction force on the communication hole 22 is applied to the other side of the bolt, thereby completing the clamping of the bolt.

[0019] The adjusting block 4 includes an arc-shaped block 41. An outer wall of the arc-shaped block 41 is fixedly connected with a metal sheet 42. An inclined surface groove 43 is formed in the outer wall of the arc-shaped block 41. The outer wall of the arc-shaped block 41 is fixedly connected with the outer wall of the rotating ring 31. The outer wall of the arc-shaped block 41 is slidably connected with the outer wall of the sliding groove 23. The outer wall of the metal sheet 42 is slidably connected with the outer wall of the limiting groove 24. The outer wall of the metal sheet 42 is fixedly connected with the outer wall of the rotating ring 31. Move the arc-shaped block 41 of the adjusting block 4 to make the metal sheet 42 on one side of the arc-shaped block 41 break away from the attraction of the magnetic sheet 25 on the upper side of the limiting groove 24, so that the arc-shaped block 41 is located in the middle of the sliding groove 23. At this time, push the two flange plates 2 closer to each other. Since the two connecting flanges have the same specifications, when one connecting flange is rotated 180 degrees and then fits together, the inclined surface grooves 43 on the arc-shaped block 41 will correspond to each other. When the connecting flanges are closer to each other, the arc-shaped block 41 is relatively pushed through the inclined surface groove 43, so that the arc-shaped block 41 approaches the side close to the movable groove 32.

[0020] Working principle:

[0021] During use, when connecting the flange, the part of the sleeve 1 that extends out is sleeved on the pipeline to be connected. The flange plate 2 is fixed by the sleeve 1 through the stepped groove 27. Then, the two flange plates 2 are attached to each other. After aligning the communication holes 22, they are fixed with bolts. Before the two flange plates 2 approach each other, move the arc-shaped block 41 of the adjusting block 4 so that the metal sheet 42 on one side of the arc-shaped block 41 is separated from the attraction of the magnetic sheet 25 on one side of the limiting groove 24, making the arc-shaped block 41 located in the middle of the sliding groove 23. At this time, push the two flange plates 2 closer to each other. Since the two connecting flanges have the same specifications, when one connecting flange is rotated 180 degrees and then attached to each other, the inclined grooves 43 on the arc-shaped block 41 will correspond to each other. When the connecting flanges approach each other, the arc-shaped block 41 is pushed relative to each other through the inclined groove 43, making the arc-shaped block 41 approach the side of the movable groove 32. Since the arc-shaped block 41 and the rotating ring 31 on the adjusting wheel 3 are fixed to each other, when the arc-shaped block 41 moves, it will drive the rotating ring 31 to move, causing the rotating hole 34 of the rotating ring 31 to slide along the surface of the sliding ring 26. When the flange plate 2 gradually approaches, insert the bolt for connection into the communication hole 22, and then continue to push the flange plate 2 closer. At this time, the arc-shaped blocks 41 continue to push each other until the arc-shaped block 41 reaches one side of the limiting groove 24. At this time, the arc-shaped block 41 enters the sliding groove 23 of the opposite hollow disk 21, enabling the hollow disk 21 to be attached. At this time, the movable groove 32 moves with the rotating ring 31 and drives the friction plate 33 to squeeze the outer wall of one side of the bolt, and by applying pressure, the reaction force on the communication hole 22 is applied to the other side of the bolt, thereby completing the clamping of the bolt, enhancing the stability and reliability of the connected flange after fixation, ensuring that the equipment and structure are less likely to malfunction or pose safety hazards due to bolt loosening during operation, and at the same time reducing the cost and time for frequent maintenance and tightening due to bolt loosening, helping to extend the service life between the bolt and the flange plate 2 and enabling it to play a better role.

[0022] The adjusting block 4 is arranged to be magnetically adsorbed on the magnetic sheet 25 in the hollow disk 21 through the metal sheet 42. Before the bolt is connected, the friction plate 33 on the movable groove 32 is far away from the inner wall of the communication hole 22. When the two connecting flanges are attached to each other, the metal sheet 42 moves with the arc-shaped block 41 and the rotating ring 31 and moves to the other side of the movable groove 32. A magnetic sheet 25 is arranged near the other side of the movable groove 32 and fixed in the limiting groove 24 of the hollow disk 21. The metal sheet 42 and the magnetic sheet 25 are magnetically adsorbed, fixing the position of the adjusting block 4, ensuring that the adjusting block 4 is difficult to shake after the flange plates 2 are attached to each other, guaranteeing the tight and reliable connection, avoiding unstable clamping caused by shaking, and at the same time reducing component wear. Fixing the position before attachment can also reduce the noise and vibration when the flange plate 2 is taken. The stability brought by the fixed position of the adjusting block 4 after the flange plates 2 are attached enhances the reliability of the entire structure.

[0023] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments in the present utility model without creative efforts shall fall within the scope of protection of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model, unless otherwise specified and limited, shall be implemented by conventional means in the art.

Claims

1. A connecting flange capable of preventing the connecting bolts from loosening, characterized in that, Comprising: A sleeve (1); A flange (2), the outer wall of the flange (2) being fixedly connected to the outer wall of the sleeve (1); An adjusting wheel (3), the outer wall of the adjusting wheel (3) being slidably connected to the inner wall of the flange (2); An adjusting block (4); The flange (2) includes a hollow disc (21), a communication hole (22) being formed in the wall of the hollow disc (21), a chute (23) being formed in the inner wall of the hollow disc (21), a magnetic attraction piece (25) being fixedly connected to the inner wall of the hollow disc (21) through a limiting groove (24), and the limiting groove (24) being formed in the wall of the hollow disc (21), a sliding ring (26) being fixedly connected to the inner wall of the hollow disc (21), and a stepped groove (27) being formed in the side wall inside the hollow disc (21).

2. A connecting flange capable of preventing loosening of connecting bolts according to claim 1, characterized in that: The adjusting wheel (3) includes a rotating ring (31), a friction piece (33) being fixedly connected to the inner wall of the rotating ring (31) through a movable groove (32), and a rotating hole (34) being formed in the middle axis of the outer wall of the movable groove (32).

3. The connecting flange capable of preventing the connecting bolts from loosening according to claim 2, wherein: The outer wall of the hollow disc (21) is fixedly connected to the outer wall of the sleeve (1) through the stepped groove (27).

4. A connecting flange capable of preventing loosening of connecting bolts according to claim 2, characterized in that: The side wall of the rotating hole (34) is slidably connected to the outer wall of the sliding ring (26), and the outer wall of the rotating ring (31) is slidably connected to the inner wall of the hollow disc (21).

5. A connecting flange capable of preventing the connecting bolt from loosening according to claim 4, characterized in that: The adjusting block (4) includes an arc-shaped block (41), a metal piece (42) being fixedly connected to the outer wall of the arc-shaped block (41), and an inclined surface groove (43) being formed in the outer wall of the arc-shaped block (41).

6. A connecting flange capable of preventing loosening of connecting bolts according to claim 5, characterized in that: The outer wall of the arc-shaped block (41) is fixedly connected to the outer wall of the rotating ring (31), the outer wall of the arc-shaped block (41) is slidably connected to the outer wall of the chute (23), the outer wall of the metal piece (42) is slidably connected to the outer wall of the limiting groove (24), and the outer wall of the metal piece (42) is fixedly connected to the outer wall of the rotating ring (31).

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