Hubbed welding neck flange

Abstract

According to the technical scheme, the welding neck flange is characterized in that the welding neck flange comprises a connecting sleeve, a first containing groove is formed in the outer wall face of the connecting sleeve, a rotating ring is arranged in the first containing groove in a sleeved mode, a connecting block is fixedly installed on the outer wall face of the rotating ring, and the connecting block is of an L-shaped design; a threaded hole is formed in one side of a vertical plate of the connecting block, a bolt is in threaded connection with the interior of the threaded hole, by arranging the rotating ring, after the device is fixed, rotating adjustment can be conducted according to different connecting positions, after the device is adjusted to the proper position, auxiliary fixing of the device can be conducted through cooperation of the connecting block, the threaded hole and the bolt, and the device is convenient to use. The flange plate can be more stable after being subjected to external force, the practicability of the device is improved, positioning can be conducted when the device is installed through the arrangement of the positioning holes and the design of the positioning holes and the positioning blocks, and the situation that the actual installation effect is affected due to deviation between the flange plate and an installation workpiece during installation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of necked butt-welding flanges, in particular to a necked butt-welding flange. Background Art

[0002] A butt-weld neck flange is a flange with a tapered neck that is butt-welded to a cylinder or pipe. It is a one-piece flange. The tapered neck transition structure and butt-weld connection enhance the flange's strength and rigidity, resulting in better sealing than a flat-weld flange. However, its disadvantage is that it requires forgings, which increases material consumption and manufacturing costs. It is suitable for applications with high pressures and temperatures, or where strict sealing requirements are required.

[0003] A butt-weld neck flange for a jacketed pipe, publication number CN220320585U, has the following defects during use:

[0004] The utility model is a necked butt-welding flange for a jacketed pipe. The first sealing unit and the second sealing unit are provided to improve the sealing effect, thereby preventing dust and other debris from entering the flange through the flange connection, causing the butt-welding flange to lose its sealing performance. In actual use, the flange body is connected to the device only through the threads on the flange body, and there is a risk of the device being loosened by external force during operation. For this reason, we have proposed a necked butt-welding flange. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a neck butt-welded flange, which solves the problem that the device may become loose due to external force during operation when connected to the device only through the threads on the flange body during actual use.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A neck butt welding flange includes a connecting sleeve, the outer wall of the connecting sleeve is provided with a first placement groove, the interior of the first placement groove is provided with a rotating ring, the outer wall of the rotating ring is fixedly installed with a connecting block, the connecting block is L-shaped, a threaded hole is provided on one side of the vertical plate of the connecting block, and a bolt is connected to the internal thread of the threaded hole.

[0008] Preferably, a through hole is provided on the top surface of the connecting sleeve, a connecting pipe is provided inside the through hole, two clamping rings are fixedly installed on the outer wall surface of the connecting pipe, and the connecting pipe is clamped inside the through hole through the two clamping rings.

[0009] Preferably, a flange is fixedly mounted on the top end of the connecting pipe, a connecting rod is fixedly mounted on the bottom end of the connecting sleeve, and a thread is provided on the outer wall surface of the connecting rod.

[0010] Preferably, the top surface of the flange is provided with a plurality of connecting holes, and the top surface of the flange is provided with a plurality of second placement grooves, the second placement grooves are arc-shaped structures with the same center, the second placement grooves are connected to the connecting holes, and a sealing strip is fixedly installed inside the second placement grooves.

[0011] Preferably, a positioning hole is provided on the top surface of the flange, and a positioning block is fixedly installed on the top surface of the flange.

[0012] In summary, the present invention has the following beneficial effects:

[0013] 1. By setting a rotating ring, the device can be rotated and adjusted according to different connection positions after being fixed. After being adjusted to the appropriate position, the device can be auxiliary fixed by the combination of the connecting block, threaded holes and bolts, making the device more stable after being subjected to external force, thereby increasing the practicality of the device;

[0014] 2. By setting the positioning holes and the design of the positioning holes and positioning blocks, the device can be positioned during installation. The positioning holes and positioning blocks are respectively used to facilitate the use of block-shaped or hole-shaped positioning mechanisms, avoiding offset between the flange and the installation workpiece during installation, which affects the actual installation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the connecting pipe structure of the present utility model.

[0018] Figure numerals: 1. connecting sleeve; 2. first placement groove; 3. rotating ring; 4. connecting block; 5. threaded hole; 6. bolt; 7. through hole; 8. connecting pipe; 9. clamping ring; 10. flange; 11. connecting rod; 12. connecting hole; 13. second placement groove; 14. sealing strip; 15. positioning hole; 16. positioning block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] refer to Figure 1-Figure 3, a neck butt welding flange, including a connecting sleeve 1, the outer wall surface of the connecting sleeve 1 is provided with a first placement groove 2, the interior of the first placement groove 2 is provided with a rotating ring 3, through the design of the rotating ring 3, it can be rotated and adjusted according to different connection positions after the device is fixed, after adjusting to the appropriate position, the device can be auxiliary fixed by the cooperation of the connecting block 4, the threaded hole 5 and the bolt 6, so that the device can be more stable after being subjected to external force, increasing the practicality of the device, the outer wall surface of the rotating ring 3 is fixedly installed with a connecting block 4, the connecting block 4 is an L-shaped design, a threaded hole 5 is provided on one side of the vertical plate of the connecting block 4, and a bolt 6 is connected to the internal thread of the threaded hole 5;

[0021] A through hole 7 is provided on the top surface of the connecting sleeve 1, and a connecting pipe 8 is provided inside the through hole 7. Two clamping rings 9 are fixedly installed on the outer wall of the connecting pipe 8. The connecting pipe 8 is clamped in the inside of the through hole 7 through the two clamping rings 9. Through the design of the clamping ring 9, it can be rotated inside the connecting sleeve 1 under the premise of limiting the position of the connecting pipe 8, and the connection position of the device thereon can be adjusted, so that the device is more flexible when connected and installed. A flange 10 is fixedly installed on the top of the connecting pipe 8, and a connecting rod 11 is fixedly installed on the bottom end of the connecting sleeve 1. The outer wall surface of the connecting rod 11 is provided with a thread. Through the design of the connecting rod 11, the device itself can be fixed and installed together with the connecting block 4, the threaded hole 5 and the bolt 6. The double fixing method makes the device itself more stable. Qualitatively, a plurality of connecting holes 12 are provided on the top surface of the flange 10, and a plurality of second placement grooves 13 are provided on the top surface of the flange 10. The second placement grooves 13 are concentric arc structures, and the second placement grooves 13 are connected to the connecting holes 12. A sealing strip 14 is fixedly installed inside the second placement groove 13. Through the design of the sealing strip 14, it is possible to seal the parts that may produce gaps after the connection and installation to avoid the existence of bubbles and oxidation inside. A positioning hole 15 is provided on the top surface of the flange 10, and a positioning block 16 is fixedly installed on the top surface of the flange 10. Through the design of the positioning hole 15 and the positioning block 16, it can be positioned during installation to avoid offset between the flange 10 and the installation workpiece during installation, which affects the actual installation effect.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A neck butt welding flange, comprising a connecting sleeve (1), characterized in that: The outer wall surface of the connecting sleeve (1) is provided with a first placement groove (2), the interior of the first placement groove (2) is provided with a rotating ring (3), the outer wall surface of the rotating ring (3) is fixedly mounted with a connecting block (4), the connecting block (4) is L-shaped, a threaded hole (5) is provided on one side of the vertical plate of the connecting block (4), and a bolt (6) is connected to the internal thread of the threaded hole (5).

2. A neck welding flange according to claim 1, characterized in that: A through hole (7) is provided on the top surface of the connecting sleeve (1), a connecting pipe (8) is provided inside the through hole (7), two clamping rings (9) are fixedly installed on the outer wall surface of the connecting pipe (8), and the connecting pipe (8) is clamped inside the through hole (7) through the two clamping rings (9).

3. The neck welding flange according to claim 2, characterized in that: A flange (10) is fixedly mounted on the top end of the connecting pipe (8), and a connecting rod (11) is fixedly mounted on the bottom end of the connecting sleeve (1). The outer wall surface of the connecting rod (11) is provided with threads.

4. The neck welding flange according to claim 3, characterized in that: The top surface of the flange (10) is provided with a plurality of connecting holes (12), and the top surface of the flange (10) is provided with a plurality of second placement grooves (13). The second placement grooves (13) are arc-shaped structures with the same center. The second placement grooves (13) are connected to the connecting holes (12), and a sealing strip (14) is fixedly installed inside the second placement grooves (13).

5. The neck welding flange according to claim 3, characterized in that: A positioning hole (15) is provided on the top surface of the flange (10), and a positioning block (16) is fixedly installed on the top surface of the flange (10).

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