Self-tightening flange connection sealing hook
The self-tightening flange connection sealing hook solves the sealing problem of air ducts in high-flow, high-speed or high-temperature application scenarios through the design of hook parts and elastic elements. It realizes the fixing of bolts and dynamic compensation of sealing force, avoiding leakage caused by thermal expansion and contraction and vibration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ZHAOHE VENTILATION ENG CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-28
AI Technical Summary
In high-flow, high-speed, or high-temperature applications, bolts on ducts can easily loosen, leading to sealing problems.
The sealing hook is connected by a self-tightening flange. Through the design of the hook and elastic element, the angle of the hook and the reinforced flange is converted into radial sealing force. Combined with the elastic element, the sealing force is dynamically compensated to avoid leakage caused by thermal expansion and contraction and vibration.
It effectively prevents bolts from loosening, maintains the airtightness of the duct, and avoids leakage caused by thermal expansion and contraction and vibration.
Smart Images
Figure CN224566943U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flange connection sealing technology, and in particular to a self-tightening flange connection sealing hook. Background Technology
[0002] Traditionally, air ducts are connected by bolts to fix flanges. However, air ducts are used in many different scenarios. In some scenarios, the air flow rate is large and the speed is fast, which can easily cause the air ducts to vibrate. Over time, the vibration can cause the bolts to loosen, resulting in problems with the sealing between the air ducts. In other scenarios, the air temperature is high. Due to thermal expansion and contraction, the bolts will also loosen after a long period of use, which will also cause problems with the sealing between the air ducts. Utility Model Content
[0003] (I) Purpose of the utility model
[0004] In view of this, the purpose of this utility model is to propose a self-tightening flange connection sealing hook. The technical problem it aims to solve is that there are many application scenarios for air ducts. In some application scenarios, the air flow rate and speed are large, which can easily cause the air duct to vibrate. Over a long period of use, vibration can easily cause the bolts to loosen, thus causing problems with the sealing between air ducts. In other application scenarios, the air temperature is high. Due to thermal expansion and contraction, the bolts will also loosen after a long period of use, which will also cause problems with the sealing between air ducts.
[0005] (II) Technical Solution
[0006] To achieve the above technical objectives, this utility model provides a self-tightening flange connection sealing hook:
[0007] It includes a duct, with frame flanges fixed to the outer sides of both ends of the duct. Reinforcing flanges are fixed to the outer sides of all four sides of the frame flanges, and the reinforcing flanges are partially folded inward to form a concave area. A hook fastener is provided between two adjacent reinforcing flanges for fixing the reinforcing flanges. The hook fastener includes a hook fastener body, a hook fastener connector one fixed to one side of the hook fastener body, a hook fastener connector two fixed to the other side of the hook fastener body, and a hook fastener hook fixed to the side of the hook fastener connector two away from the hook fastener body. A bolt is provided inside the hook fastener connector one. The bolt and the hook fastener hook can be respectively embedded in the concave areas of two adjacent reinforcing flanges.
[0008] In a preferred embodiment of the self-tightening flange connection sealing hook described in this utility model, when the end of the hook member away from the hook member connection body two abuts against the reinforcing flange, the angle between the end of the hook member and the reinforcing flange is denoted as α. Figure 4As shown, a is 25°, which converts the pressure between the hook and the reinforcing flange into a radial sealing force.
[0009] As a preferred embodiment of the self-tightening flange connection sealing hook of this utility model, wherein: a threaded hole is provided in the hook connection body, and the threaded hole is threadedly connected to a bolt.
[0010] As a preferred embodiment of the self-tightening flange connection sealing hook of this utility model, a pressure ring is fixed on one side of the hook connection body, and two locking plates are fixed inside the pressure ring. The locking plates can deform under force, and the deformed locking plates can be locked in the thread groove of the bolt.
[0011] As a preferred embodiment of the self-tightening flange connection sealing hook of this utility model, an elastic element is provided on the outside of the bolt, one end of the elastic element abuts against the hook connection body, and the other end of the elastic element abuts against the reinforcing flange.
[0012] As a preferred embodiment of the self-tightening flange connection sealing hook of this utility model, a flange gasket is provided between two adjacent frame flanges, and the flange gasket is clamped by two adjacent reinforcing flanges.
[0013] As can be seen from the above technical solutions, this application has the following beneficial effects:
[0014] 1: Rotate the bolt to move it on the hook connector. When the hook and elastic element are both pressed against the reinforcing flange, that is, the adjacent reinforcing flanges are fixed together, the sealing force is dynamically compensated by the elastic element to avoid leakage caused by thermal expansion and contraction.
[0015] 2: When the bolt moves within the hook-and-weight connector, the bolt will compress the locking plate and deform it. The deformed locking plate will then be locked in the threaded groove of the bolt, forming a mechanical lock and preventing the bolt and the hook-and-weight connector from falling off due to vibration. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0017] Figure 1 A structural schematic diagram of a self-tightening flange connection sealing hook provided by this utility model;
[0018] Figure 2Provided by this utility model Figure 1 Schematic diagram of the structure at point A in the middle;
[0019] Figure 3 A side view of a self-tightening flange connection sealing hook provided by this utility model;
[0020] Figure 4 Provided by this utility model Figure 3 Schematic diagram of the structure at point B;
[0021] Figure 5 A schematic diagram of the structure of the hook weight provided by this utility model;
[0022] Figure 6 A cross-sectional structural diagram of the hook weight provided by this utility model;
[0023] Figure 7 Provided by this utility model Figure 6 Schematic diagram of the structure at point C.
[0024] Attached diagram descriptions: 1. Air duct; 2. Frame flange; 3. Reinforced flange; 4. Recessed area; 5. Hook body; 6. Hook connector one; 7. Hook connector two; 8. Hook hook; 9. Bolt; 10. Flange gasket; 11. Threaded hole; 12. Pressure ring; 13. Locking plate; 14. Elastic element. Detailed Implementation
[0025] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures.
[0026] Reference Figure 1-7 :
[0027] In one embodiment of this utility model, a self-tightening flange connection sealing hook is provided, including a duct 1. Frame flanges 2 are fixed to the outer sides of both ends of the duct 1. Reinforcing flanges 3 are fixed to the outer sides of all four sides of the frame flanges 2. A portion of the reinforcing flange 3 is folded inward to form a concave area 4. A hook component for fixing the reinforcing flange 3 is provided between two adjacent reinforcing flanges 3. The hook component includes a hook body 5. A hook connector 1 6 is fixed to one side of the hook body 5, and a hook connector 2 7 is fixed to the other side of the hook body 5. A hook hook 8 is fixed to the side of the hook connector 2 7 away from the hook body 5. A bolt 9 is provided inside the hook connector 1 6. The bolt 9 and the hook hook 8 can be respectively embedded in the concave areas 4 of two adjacent reinforcing flanges 3.
[0028] When the end of the hook member 8 furthest from the hook connector 7 abuts against the reinforcing flange 3, the angle between the end of the hook member 8 and the reinforcing flange 3 is denoted as 'a'. Figure 4 As shown, a is 25°, which converts the pressure between the hook 8 and the reinforcing flange 3 into radial sealing force.
[0029] Furthermore, a threaded hole 11 is provided in the hook connector body 6, and the threaded hole 11 is threadedly connected to the bolt 9. A pressure ring 12 is fixed on one side of the hook connector body 6, and two locking plates 13 are fixed inside the pressure ring 12. The locking plates 13 can deform under force, and the deformed locking plates 13 can be locked in the thread groove of the bolt 9. An elastic element 14 is sleeved on the outside of the bolt 9. One end of the elastic element 14 abuts against the hook connector body 6, and the other end of the elastic element 14 abuts against the reinforcing flange 3.
[0030] It should be noted that the elastic element 14 can be a spring or other device. By using the elastic element 14 to dynamically compensate for the sealing force, leakage caused by thermal expansion and contraction can be avoided. In addition, when the bolt 9 moves within the hook connector 6, the bolt 9 will squeeze the locking piece 13, thereby causing the locking piece 13 to deform. The deformed locking piece 13 will be stuck in the thread groove of the bolt 9, forming a mechanical lock, preventing the bolt 9 and the hook connector 6 from falling off due to vibration.
[0031] Specifically, a flange gasket 10 is provided between two adjacent frame flanges 2, and the flange gasket 10 is clamped by two adjacent reinforcing flanges 3.
[0032] In use, the reinforcing flange 3 is welded to the outside of the frame flange 2, and then multiple hooks are used to fix the adjacent reinforcing flanges 3. When fixing the adjacent reinforcing flanges 3 with the hooks, the hooks are first moved laterally so that the hook 8 moves into the concave area 4 of one of the reinforcing flanges 3, and the elastic element 14 moves into the concave area 4 of the other reinforcing flange 3. The hook body 5 and one side of the two reinforcing flanges 3 are in contact. After the hook body 5, hook 8, and elastic element 14 are moved to the required position, the bolt 9 is turned with a wrench so that the bolt 9 moves on the hook connector 6, so that the hook 8 and elastic element 14 are both pressed against the reinforcing flanges 3, that is, the adjacent reinforcing flanges 3 are fixed, thus completing the connection of the duct 1.
[0033] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.
Claims
1. A self-tightening flange connection sealing hook, comprising a duct (1), characterized in that, A frame flange (2) is fixed to the outer side of both ends of the air duct (1). A reinforcing flange (3) is fixed to the outer side of all four sides of the frame flange (2). The reinforcing flange (3) is partially folded inward to form a concave area (4). A hook fastener is provided between two adjacent reinforcing flanges (3) for fixing the reinforcing flange (3). The hook fastener includes a hook fastener body (5). A hook fastener connector one (6) is fixed to one side of the hook fastener body (5). A hook fastener connector two (7) is fixed to the other side of the hook fastener body (5). A hook fastener hook (8) is fixed to the side of the hook fastener connector two (7) away from the hook fastener body (5). A bolt (9) is provided in the hook fastener connector one (6). The bolt (9) and the hook fastener hook (8) can be embedded in the concave area (4) of two adjacent reinforcing flanges (3).
2. The self-tightening flange connection sealing hook according to claim 1, characterized in that, When the end of the hook (8) away from the hook connector (7) abuts against the reinforcing flange (3), the angle between the hook (8) and the reinforcing flange (3) is 25°.
3. The self-tightening flange connection sealing hook according to claim 1, characterized in that, The hook connector (6) has a threaded hole (11) inside, and the threaded hole (11) is threadedly connected to the bolt (9).
4. The self-tightening flange connection sealing hook according to claim 1, characterized in that, A pressure ring (12) is fixed on one side of the hook connector (6). Two locking pieces (13) are fixed inside the pressure ring (12). The locking pieces (13) can deform under force, and the deformed locking pieces (13) can be locked in the thread groove of the bolt (9).
5. A self-tightening flange connection sealing hook according to claim 1, characterized in that, An elastic element (14) is sleeved on the outside of the bolt (9). One end of the elastic element (14) abuts against the hook connector (6), and the other end of the elastic element (14) abuts against the reinforcing flange (3).
6. A self-tightening flange connection sealing hook according to claim 1, characterized in that, A flange gasket (10) is provided between two adjacent frame flanges (2), and the flange gasket (10) is clamped by two adjacent reinforcing flanges (3).