A quick-change hot top sealing structure

Abstract

The utility model relates to hot top sealing technical field discloses a kind of hot top sealing structure of quick replacement, including pipeline, the pipeline top is provided with cover, the cover bottom is provided with quick-release assembly, the cover inner wall is slidably connected with sealing ring, the sealing ring outer wall is provided with lamination assembly, the lamination assembly includes support, the support outer wall and the sealing ring outer wall are pasted, the support outer wall is fixedly connected in the pipeline inner wall, the sealing ring top is fixedly connected with sliding column, the sliding column outer wall is slidably connected with fixed column, the fixed column inside is provided with spring one, the spring one one end is fixedly connected in the sliding column top. In the utility model, sealing ring is slid on the outer wall of support, then sealing ring drives sliding column to move, avoid sealing ring and support not close, easy to form small gap, cause liquid, gas or dust leakage.

Description

Technical Field

[0001] This utility model relates to the field of hot top sealing technology, and in particular to a hot top sealing structure that can be quickly replaced. Background Technology

[0002] In industrial production, energy transmission, and equipment manufacturing, the hot top seal structure is a key component ensuring the safe and stable operation of the system, and its performance directly affects the reliability and efficiency of the equipment. Hot top seal structures are mainly used in high-temperature, high-pressure, or special media environments, such as chemical reactors, thermal pipelines, and aerospace equipment, to prevent media leakage, maintain system pressure stability, and prevent the intrusion of external impurities.

[0003] Currently, common hot-top sealing structures primarily employ traditional sealing methods in their mechanical design and technical principles. In terms of mechanical structure, sealing connections are often achieved by bolting flanges, welding sealing components to the equipment surface, or using complex connection structures such as snap-fits and threads for assembly. Their technical principle is based on the concept of static sealing, relying on the elastic deformation of the sealing material to fill the tiny gaps in the sealing surface. Applying external force ensures a tight seal between the sealing element and the sealing surface, thereby preventing media leakage.

[0004] However, existing hot-top sealing structures have a significant drawback: poor fit between the sealing ring and the sealing surface. During actual operation, factors such as equipment vibration, thermal expansion and contraction, and media pressure fluctuations make it difficult for the sealing ring in traditional sealing structures to maintain a tight seal with the sealing surface at all times. Even if a good sealing effect is achieved initially, over time, the sealing ring may shift or twist due to uneven stress, or the surface roughness or machining precision of the sealing surface may lead to increased local gaps. Once a tiny gap forms between the sealing ring and the sealing surface, liquids, gases, or dust can easily leak, causing not only media waste and environmental pollution but also potential safety accidents. Furthermore, poor fit accelerates the wear and aging of the sealing ring, leading to frequent failures and requiring periodic replacement, significantly increasing maintenance costs and equipment downtime, severely restricting production efficiency and the economic viability of equipment operation. Therefore, a quickly replaceable hot-top sealing structure is proposed to address these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a quick-replaceable hot-top sealing structure, which aims to improve the problem that the sealing ring cannot be fully fitted in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quick-replaceable hot-top sealing structure includes a pipe, a cover plate is provided at the top of the pipe, a quick-release assembly is provided at the bottom of the cover plate, a sealing ring is slidably connected to the inner wall of the cover plate, and a fitting assembly is provided on the outer wall of the sealing ring.

[0008] The fitting assembly includes a bracket, the outer wall of the bracket and the outer wall of the sealing ring are fitted together, the outer wall of the bracket is fixedly connected to the inner wall of the pipe, a sliding column is fixedly connected to the top of the sealing ring, a fixed column is slidably connected to the outer wall of the sliding column, a spring is provided inside the fixed column, one end of the spring is fixedly connected to the top of the sliding column, the other end of the spring is fixedly connected to the inner wall of the fixed column, and the top of the fixed column is fixedly connected to the inner wall of the cover plate.

[0009] As a further description of the above technical solution:

[0010] The quick-release assembly includes a fixing rod, the top of which is fixedly connected to the bottom of the cover plate, and a fixing hole is provided inside the fixing rod;

[0011] As a further description of the above technical solution:

[0012] The outer wall of the fixing rod is slidably connected to the inner wall of the pipe, and a fixing block is fixedly connected to the outer wall of the pipe. A limit rod is slidably connected to the inner wall of the fixing block.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the limiting rod is slidably connected to the inner wall of the pipe, the outer wall of the limiting rod is slidably connected to the inner wall of the fixing hole, and a sliding rod is fixedly connected to the outer wall of the limiting rod;

[0015] As a further description of the above technical solution:

[0016] A second spring is sleeved on the outer wall of the sliding rod. One end of the second spring is fixedly connected to the outer wall of the limiting rod, and the other end of the second spring is fixedly connected to the inner wall of the fixing block.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the sliding rod is slidably connected to the inner wall of the fixed block, the sliding rod has a sliding groove inside, and the outer wall of the fixed block is fixedly connected to a fixing frame;

[0019] As a further description of the above technical solution:

[0020] The inner wall of the fixed frame is rotatably connected to a rotating column, and the outer wall of the rotating column is fixedly connected to a connecting arm.

[0021] As a further description of the above technical solution:

[0022] The outer wall of the connecting arm is slidably connected to the inner wall of the sliding groove, a limit block is fixedly connected to one end of the connecting arm, and a pull rod is fixedly connected to the outer wall of the rotating column.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the sealing ring slides on the outer wall of the bracket, and then the sliding column moves by the sealing ring, which achieves the effect of sealing ring fitting. This avoids the sealing ring and the bracket not fitting tightly, which can easily form small gaps and cause leakage of liquid, gas or dust. The poorly fitted sealing ring is prone to failure due to leakage or wear, and needs to be replaced frequently, increasing maintenance costs. This significantly improves the sealing performance of the equipment and extends the service life of the sealing ring.

[0025] 2. In this utility model, the sliding rod drives the limiting rod to move, and then moves out of the fixing hole through the limiting rod, achieving the effect of quick disassembly of the cover plate. This avoids the traditional sealing structure, which usually uses bolt fastening, welding, or complex snap-fit ​​connections. During disassembly, it is necessary to remove each bolt one by one, use professional tools, or damage part of the structure, which consumes a lot of manpower and time. During disassembly, due to cumbersome operation or improper use of tools, it is also easy to cause the sealing ring to tear or deform, or damage the equipment body. This simplifies the operation process, significantly shortens the disassembly and installation time of the sealing structure, and extends the service life of the sealing ring and the equipment. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a quick-replaceable hot top seal structure proposed in this utility model.

[0027] Figure 2 A schematic diagram of the sealing ring of a quick-replaceable hot-top sealing structure proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the fixing rod of a quick-replaceable hot top sealing structure proposed in this utility model;

[0030] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0031] Figure 6 This is a schematic diagram of the sliding rod of a quick-replaceable hot top sealing structure proposed in this utility model.

[0032] Legend:

[0033] 1. Pipe; 2. Cover plate; 3. Sealing ring; 4. Bracket; 5. Fixed column; 6. Sliding column; 7. Spring 1; 8. Fixed rod; 9. Fixed hole; 10. Fixed block; 11. Limiting rod; 12. Sliding rod; 13. Spring 2; 14. Sliding groove; 15. Fixed frame; 16. Rotating column; 17. Connecting arm; 18. Limiting block; 19. Pull rod. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 1-3 This utility model provides an embodiment of a quick-replaceable hot-top sealing structure, including a pipe 1, a cover plate 2 at the top of the pipe 1, a quick-release assembly at the bottom of the cover plate 2, a sealing ring 3 slidably connected to the inner wall of the cover plate 2, and a fitting assembly on the outer wall of the sealing ring 3. The fitting assembly includes a bracket 4, the outer wall of the bracket 4 fitting against the outer wall of the sealing ring 3. The bracket 4 has an L-shaped annular structure, and its outer wall is tightly fitted against the outer wall of the sealing ring 3. The height of the bracket 4 is half the height of the sealing ring 3, allowing it to fit better against the sealing ring 3. The outer wall of the bracket 4 is fixedly connected to the inner wall of the pipe 1, and a sliding post 6 is fixedly connected to the top of the sealing ring 3. A fixed column 5 is slidably connected to the outer wall of the moving column 6. A spring 7 is installed inside the fixed column 5. One end of the spring 7 is fixedly connected to the top of the moving column 6, and the other end of the spring 7 is fixedly connected to the inner wall of the fixed column 5. The spring 7 cooperates with the moving column 6. When there is a pressure change in the pipeline 1 or equipment vibration, the spring 7 can push the moving column 6 to drive the sealing ring 3 to slide up and down on the inner wall of the cover plate 2. This achieves the effect of keeping the sealing ring 3 tightly attached to the bracket 4, ensuring the reliability of the seal. The top of the fixed column 5 is fixedly connected to the inner wall of the cover plate 2. The fixed column 5 plays a supporting and guiding role, ensuring the sliding stability of the moving column 6 and preventing the sealing ring 3 from shaking.

[0036] Reference Figure 1 and Figures 4-6The quick-release assembly includes a fixing rod 8, the top of which is fixedly connected to the bottom of the cover plate 2. The fixing rod 8 is a cylindrical rod structure used to cooperate with the pipe 1 to achieve initial positioning and support of the cover plate 2, thus achieving a stable connection between the cover plate 2 and the pipe 1. The fixing rod 8 has a fixing hole 9 inside, and its outer wall is slidably connected to the inner wall of the pipe 1. A fixing block 10 is fixedly connected to the outer wall of the pipe 1. The fixing block 10 is a block structure used to install components such as the limit rod 11 and the spring 13, serving to fix and support the components. The inner wall of the fixing block 10... A sliding limit rod 11 is used to restrict the movement of the fixed rod 8, thereby achieving a fixing effect and preventing the fixed rod 8 from shaking during operation, thus increasing its stability. The outer wall of the limit rod 11 is slidably connected to the inner wall of the pipe 1 and the inner wall of the fixing hole 9. A sliding rod 12 is fixedly connected to the outer wall of the limit rod 11. The sliding rod 12 cooperates with the limit rod 11. When it is necessary to remove the cover plate 2, the sliding rod 12 is pulled to move the limit rod 11, and then the limit rod 11 moves out of the fixing hole 9. Internally, this design allows for quick disassembly of the cover plate 2. A second spring 13 is fitted onto the outer wall of the sliding rod 12. One end of the second spring 13 is fixedly connected to the outer wall of the limiting rod 11, and the other end is fixedly connected to the inner wall of the fixing block 10. After the limiting rod 11 is inserted into the fixing hole 9, the elastic force provided by the second spring 13 keeps the limiting rod 11 in a fixed state, preventing it from loosening and falling off. The outer wall of the sliding rod 12 is slidably connected to the inner wall of the fixing block 10. A sliding groove 14 is provided inside the sliding rod 12. A fixing bracket 1 is fixedly connected to the outer wall of the fixing block 10. 5. A rotating column 16 is rotatably connected to the inner wall of the fixed frame 15, and a connecting arm 17 is fixedly connected to the outer wall of the rotating column 16. The outer wall of the connecting arm 17 is slidably connected to the inner wall of the sliding groove 14. A limit block 18 is fixedly connected to one end of the connecting arm 17, and a pull rod 19 is fixedly connected to the outer wall of the rotating column 16. When the pull rod 19 is pulled to drive the rotating column 16 to rotate, the connecting arm 17 slides in the sliding groove 14, pushing the sliding rod 12 and the limit rod 11 to move, thereby realizing the operation of quickly disassembling the cover plate 2, which simplifies the disassembly process and improves maintenance efficiency.

[0037] Working principle: During operation, the spring 7 rebounds and drives the sliding column 6 to move. Then, the movement of the sliding column 6 drives the sealing ring 3 to slide on the inner wall of the cover plate 2, thereby pressing the sealing ring 3 against the bracket 4. This pressing ensures that the sealing ring 3 is always in contact with the outer wall of the bracket 4, preventing the sealing ring 3 from not fitting tightly against the sealing surface, which could easily form tiny gaps and cause leakage of liquid, gas, or dust. Poorly fitted sealing rings 3 are prone to failure due to leakage or wear, requiring frequent replacement and increasing maintenance costs.

[0038] When disassembling the sealing ring 3, first pull down the pull rod 19. Pulling the pull rod 19 causes the rotating column 16 to rotate. Then, the rotation of the rotating column 16 causes the connecting arm 17 to slide inside the sliding groove 14. The sliding arm 17 then pushes out the sliding rod 12 inside the sliding groove 14. Then, the movement of the sliding rod 12 causes the limiting rod 11 to move. The movement of the limiting rod 11 then compresses the spring 13. Finally, when the limiting rod 11 moves out of the fixing hole 9, the disassembly of the sealing ring 3 is completed. 3. During installation, simply slide the fixing rod 8 onto the inner wall of the pipe 1, then press it down, and then release the pull rod 19. The spring 13 will then cause the limiting rod 11 to move into the fixing hole 9, thus completing the installation of the sealing ring 3. This avoids the traditional sealing structure, which usually uses bolt fastening, welding, or complex snap-fit ​​connections. Disassembly requires removing each bolt one by one, using professional tools, or damaging part of the structure, which consumes a lot of manpower and time. During disassembly, due to the cumbersome operation or improper use of tools, the sealing ring 3 may be easily torn, deformed, or the equipment body may be damaged.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-replaceable hot-top seal structure, comprising a pipe (1), characterized in that: The top of the pipe (1) is provided with a cover plate (2), the bottom of the cover plate (2) is provided with a quick-release assembly, the inner wall of the cover plate (2) is slidably connected with a sealing ring (3), and the outer wall of the sealing ring (3) is provided with a fitting assembly; The fitting assembly includes a bracket (4), the outer wall of the bracket (4) and the outer wall of the sealing ring (3) are fitted together, the outer wall of the bracket (4) is fixedly connected to the inner wall of the pipe (1), a sliding column (6) is fixedly connected to the top of the sealing ring (3), a fixed column (5) is slidably connected to the outer wall of the sliding column (6), a spring (7) is provided inside the fixed column (5), one end of the spring (7) is fixedly connected to the top of the sliding column (6), the other end of the spring (7) is fixedly connected to the inner wall of the fixed column (5), and the top of the fixed column (5) is fixedly connected to the inner wall of the cover plate (2).

2. The quick-replaceable hot top seal structure according to claim 1, characterized in that: The quick-release assembly includes a fixing rod (8), the top of which is fixedly connected to the bottom of the cover plate (2), and a fixing hole (9) is provided inside the fixing rod (8).

3. The quick-replaceable hot top seal structure according to claim 2, characterized in that: The outer wall of the fixing rod (8) is slidably connected to the inner wall of the pipe (1), and the outer wall of the pipe (1) is fixedly connected to a fixing block (10), and the inner wall of the fixing block (10) is slidably connected to a limit rod (11).

4. The quick-replaceable hot top seal structure according to claim 3, characterized in that: The outer wall of the limiting rod (11) is slidably connected to the inner wall of the pipe (1), the outer wall of the limiting rod (11) is slidably connected to the inner wall of the fixing hole (9), and a sliding rod (12) is fixedly connected to the outer wall of the limiting rod (11).

5. The quick-replaceable hot top seal structure according to claim 4, characterized in that: A second spring (13) is sleeved on the outer wall of the sliding rod (12). One end of the second spring (13) is fixedly connected to the outer wall of the limiting rod (11), and the other end of the second spring (13) is fixedly connected to the inner wall of the fixing block (10).

6. The quick-replaceable hot top seal structure according to claim 5, characterized in that: The outer wall of the sliding rod (12) is slidably connected to the inner wall of the fixed block (10), and a sliding groove (14) is provided inside the sliding rod (12). A fixed frame (15) is fixedly connected to the outer wall of the fixed block (10).

7. The quick-replaceable hot top seal structure according to claim 6, characterized in that: The inner wall of the fixed frame (15) is rotatably connected to a rotating column (16), and the outer wall of the rotating column (16) is fixedly connected to a connecting arm (17).

8. The quick-replaceable hot top seal structure according to claim 7, characterized in that: The outer wall of the connecting arm (17) is slidably connected to the inner wall of the sliding groove (14), and a limit block (18) is fixedly connected to one end of the connecting arm (17). A pull rod (19) is fixedly connected to the outer wall of the rotating column (16).

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