A seal gasket having a positioning structure

Abstract

This utility model discloses a sealing gasket with a positioning structure, belonging to the field of sealing gasket technology. It includes multiple sealing components. One side of each sealing component is connected to a combined protrusion, and the other side has a combined groove adapted to the combined protrusion. A threaded channel communicating with the combined groove is formed on the outer periphery of each sealing component. A countersunk bolt for combined fixation is threaded into the threaded channel. A combined channel for the countersunk bolt to pass through is formed on the side of the combined protrusion. A hollow limiting plate for limiting the countersunk bolt is rotatably connected to the outer periphery of each sealing component via a rotating shaft. A movable plate is provided inside the limiting plate. A limiting frame adapted to the movable plate is also connected to the outer periphery of each sealing component. This sealing gasket with a positioning structure solves the size adaptation problem through "modular combination, double fixing + flexible compensation to solve the sealing reliability problem, and simplified operation to solve the installation convenience problem."

Description

Technical Field

[0001] This utility model belongs to the field of sealing gasket technology, and in particular to a sealing gasket with a positioning structure. Background Technology

[0002] Gaskets are sealing components used in machinery, equipment, pipelines—anywhere fluid is present. They are materials used both internally and externally to provide a seal. Gaskets are made from metal or non-metal sheet materials through processes such as cutting, stamping, or shearing. Gaskets can be classified into metal gaskets and non-metal gaskets based on their material. Traditional gaskets are designed with an assemblable structure for easy replacement and disassembly. However, they are fixed using only bolts, and under prolonged vibration, the springs can easily disengage, affecting the assembly effect.

[0003] A search revealed a Chinese patent document (authorization announcement number CN223203661U) describing a sealing gasket with a positioning structure. The gasket includes a first sealing body, a second sealing body positioned on one side of the first sealing body, and a connection between the two bodies via a fixing rod. Both the first and second sealing bodies have semi-annular cross-sections, and expansion grooves are formed on their outer sides. This invention features a reasonable and reliable structure. By forming a combined sealing gasket with the first and second sealing bodies, it eliminates the need to replace the entire gasket when any component is damaged or requires maintenance, reducing maintenance costs and simplifying the maintenance process. Furthermore, only the damaged part needs to be replaced, further saving costs and reducing the need for spare parts inventory. However, the aforementioned patent uses only bolts for fixing, which can lead to spring detachment under prolonged vibration, affecting the overall assembly effect. Utility Model Content

[0004] The purpose of this invention is to provide a sealing gasket with a positioning structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sealing gasket with a positioning structure, comprising multiple sealing components, a combined protrusion connected to one side of the sealing component, a combined groove adapted to the combined protrusion on the other side of the sealing component, and a threaded channel communicating with the combined groove on the outer periphery of the sealing component.

[0006] The threaded channel is threaded with countersunk bolts for assembly and fixation. The side of the assembly protrusion has an assembly channel for the countersunk bolts to pass through. The outer periphery of the sealing assembly is rotatably connected to a hollow limiting plate for limiting the countersunk bolts via a rotating shaft. The inner cavity of the limiting plate is provided with a movable plate. The outer periphery of the sealing assembly is also connected with a limiting frame that matches the movable plate. A return spring in a compressed state is connected between the movable plate and the limiting plate.

[0007] As a preferred embodiment, the outer periphery of the movable plate is connected to a lever for easy operation of the movable plate.

[0008] As a preferred embodiment, the sealing assembly includes:

[0009] Two sector-shaped sealing gaskets;

[0010] A connecting block is fixedly connected to the side of one of the sector-shaped sealing gaskets. The side of the connecting block has multiple storage channels. The side of the other sector-shaped sealing gasket is connected to multiple sealing blocks that can be inserted into the storage channels.

[0011] In a preferred embodiment, a buffer spring with a cushioning effect is connected between the sealing block and the inner wall of the storage channel, and the number of sealing components is even.

[0012] As a preferred embodiment, one of the sector-shaped sealing gaskets has multiple positioning grooves on its side, and the other sector-shaped sealing gasket has multiple positioning hemispherical blocks that are adapted to the positioning grooves connected to its side.

[0013] As a preferred embodiment, the side surface of the combined bump is constructed as an arc-shaped surface for easy insertion.

[0014] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0015] This sealing gasket with a positioning structure consists of multiple sealing components, and the number of components is designed to be an even number. Through the matching splicing of "combination protrusions + combination grooves", it is convenient to purchase and replace when needed. The side structure of the combination protrusion is curved, which can guide the protrusion to slide quickly into the combination groove during splicing (avoiding the problem of "stuck and difficult to align" of traditional right-angle protrusions). Even if the installer lacks operating experience, he can efficiently complete the splicing and positioning of multiple components, improving the assembly efficiency.

[0016] This sealing gasket with a positioning structure, after being assembled, is connected via a threaded channel and countersunk bolts (the bolts pass through the combined channel of the combined protrusions) to achieve basic fixation and rigidly lock adjacent sealing components, preventing misalignment of components due to vibration and pressure affecting the sealing surface. The countersunk design also ensures that the bolt head does not protrude from the surface of the sealing component, preventing bolt interference with the sealing surface (avoiding the sealing gap caused by the protrusion of traditional bolts). After the bolt is fixed, the hollow limiting plate is rotated by the rotating shaft, so that the limiting plate covers the bolt head; at the same time, the return spring (in the compressed state) inside the limiting plate pushes the movable plate into the limiting frame of the sealing component, locking the limiting plate in the "covering bolt" position. Even if the bolt becomes slightly loose during long-term use, the limiting plate can prevent the bolt from rotating or falling off, completely eliminating the risk of "component separation and seal failure caused by bolt loosening".

[0017] This sealing gasket with a positioning structure can absorb pressure shocks when the sealing surface is subjected to pressure fluctuations (such as changes in fluid pressure in the pipeline) by a buffer spring, avoiding wear or deformation of the sealing block due to rigid contact, and extending the sealing life. The combination of the positioning groove and positioning hemispherical block between the two sector-shaped sealing gaskets can achieve "pre-positioning" during the assembly of the sealing assembly: after the hemispherical block is inserted into the positioning groove, it can limit the relative displacement of the two sector-shaped sealing gaskets (avoiding lateral sliding) and ensure that the sealing surface of the sealing assembly always remains flat and aligned. Without this structure, the sealing gasket may have "local bulges or depressions" due to splicing misalignment, resulting in sealing gaps and causing leakage.

[0018] This sealing gasket with a positioning structure solves the size adaptation problem through "modular combination, solves the sealing reliability problem through double fixing + flexible compensation, and solves the installation convenience problem through simplified operation". Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the sealing assembly of this utility model;

[0022] Figure 3 This is a cross-sectional view of the sector-shaped sealing gasket of this utility model;

[0023] Figure 4 This is a front view of the two sealing components of this utility model;

[0024] Figure 5 For the present utility model Figure 4 Front view after the middle limit plate has rotated;

[0025] Figure 6 This is a cross-sectional view of the limiting plate of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] In the picture:

[0028] 1. Sealing assembly; 2. Combined protrusion; 3. Combined groove; 4. Countersunk bolt; 5. Limiting plate; 6. Movable plate; 7. Limiting frame; 8. Return spring; 9. Actuating rod;

[0029] 101. Fan-shaped sealing gasket; 102. Connecting block; 103. Sealing block; 104. Buffer spring; 105. Positioning hemispherical block. Detailed Implementation

[0030] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0031] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0032] The connection method can adopt existing methods such as bonding, welding, and bolting, depending on the actual needs. Techniques, methods and equipment known to those skilled in the art may not be discussed in detail. However, where appropriate, the techniques, methods and equipment should be regarded as part of the specification. The proportions of the components in the drawings are for reference only and can be adjusted to a certain extent according to the actual use.

[0033] Please see Figures 1 to 6 As shown, a sealing gasket with a positioning structure is provided in this embodiment. It includes multiple sealing components 1. One side of the sealing component 1 is connected to a combined protrusion 2. The side of the combined protrusion 2 is constructed as an arc-shaped surface for easy insertion. The other side of the sealing component 1 is provided with a combined groove 3 that is adapted to the combined protrusion 2. The outer periphery of the sealing component 1 is provided with a threaded channel that communicates with the combined groove 3. The threaded channel is threadedly connected to a countersunk bolt 4 for assembly and fixation. The side of the combined protrusion 2 is provided with a combined channel for the countersunk bolt 4 to pass through. The pre-assembled sealing components 1 are inserted by aligning the combined protrusion 2 of one sealing component 1 with the combined groove 3 of another sealing component 1. The above steps are repeated to splice all the sealing components in sequence (e.g., 2 components are spliced ​​into a semi-circle, 4 components are spliced ​​into a circle), and finally a "whole sealing gasket structure" that matches the size of the target sealing surface is formed. When all the sealing components 1 are spliced ​​in place, the threaded channel on the outer periphery of the sealing component 1 and the combined channel of the combined protrusion 2 will automatically align (positioning design of the splicing structure). The countersunk bolt 4 is screwed in from the threaded channel until the bolt passes through the combined channel and fully engages with the threaded channel of the adjacent sealing component 1.

[0034] A hollow limiting plate 5 for limiting the countersunk bolt 4 is rotatably connected to the outer periphery of the sealing assembly 1 via a rotating shaft. A movable plate 6 is provided in the inner cavity of the limiting plate 5. A limiting frame 7 adapted to the movable plate 6 is also connected to the outer periphery of the sealing assembly 1. A return spring 8 in a compressed state is connected between the movable plate 6 and the limiting plate 5. A toggle lever 9 for easy operation of the movable plate 6 is connected to the outer periphery of the movable plate 6. After the countersunk bolt 4 is tightened, the limiting plate 5 (the limiting plate 5 is a hollow structure that can completely cover the head of the countersunk bolt 4) is rotated around the rotating shaft so that the opening of the limiting plate 5 is aligned with the limiting frame 7 on the outer periphery of the sealing assembly 1. At this time, the movable plate 6 inside the limiting plate 5 always tends to move towards the limiting frame 7 due to the compression thrust of the return spring 8, thus preventing the movable plate 6 from falling out.

[0035] If the overall structure is small, the parts that require manual operation should be prominently displayed without affecting usability, ensuring ease of operation.

[0036] Sealing assembly 1 includes:

[0037] The two sector-shaped sealing gaskets 101 are adapted to a circular structure in this application. If the structure is square or elliptical, the shape of the sector-shaped sealing gaskets 101 can be adaptively adjusted and is not limited to a specific shape.

[0038] A connecting block 102 is fixedly connected to the side of one of the sector-shaped sealing gaskets 101. The side of the connecting block 102 has multiple storage channels. The side of the other sector-shaped sealing gasket 101 is connected to multiple sealing blocks 103 that insert into the storage channels. A buffer spring 104 with a buffering function is connected between the sealing block 103 and the inner wall of the storage channel. The number of sealing components 1 is even. The side of one sector-shaped sealing gasket 101 has multiple positioning grooves, and the side of the other sector-shaped sealing gasket 101 is connected to multiple positioning hemispherical blocks that fit the positioning grooves. 105. When the entire assembly is installed on the target sealing surface (such as a flange), if there are slight processing errors (unevenness) or deformation after long-term use on the sealing surface, the buffer spring 104 in the sealing assembly will adaptively expand and contract. When the pressure of the sealing medium (such as fluid or gas) fluctuates, the buffer spring 104 can absorb the pressure shock. When the pressure increases, the buffer spring 104 is compressed to prevent the sector-shaped sealing gasket 101 from being deformed due to excessive compression. When the pressure decreases, the buffer spring 104 rebounds to maintain the contact strength between the sector-shaped sealing gasket 101 and the sealing surface, ensuring stable sealing performance.

[0039] Because this application requires precision applications, the accuracy and strength of each structure are very high to avoid leaks due to loose assembly. For high-pressure media (such as hydraulic systems with pressure > 10 MPa), single-stage sealing surfaces are prone to "media breakdown" (high-pressure media seeping through tiny gaps in the sealing surface) under pressure impact, leading to leakage accidents. Low-temperature environments (such as outdoor low-temperature areas with temperatures < -20℃) will cause the gasket to harden, become brittle, and lose its elasticity. The compensating force of the buffer spring 104 cannot push the hardened gasket to fit the sealing surface, forming a rigid gap. If the fan-shaped sealing gasket 101 is made of ordinary flammable rubber, it will melt and burn at high temperatures, not only damaging the sealing structure but also producing toxic fumes (such as hydrogen chloride and carbon monoxide), exacerbating fire hazards. The lack of "flame-retardant materials" (such as fluororubber and asbestos gaskets) or "fireproof structures" (such as metal skeleton support) makes it impossible to maintain the integrity of the seal at high temperatures or in the early stages of a fire, which may lead to leakage of high-temperature media (such as high-temperature steam) and cause secondary accidents.

[0040] Working principle

[0041] The sealing gasket with a positioning structure, and the pre-assembled sealing components 1, are inserted by aligning the combined protrusion 2 of one sealing component 1 with the combined groove 3 of another sealing component 1. This process is repeated until all sealing components are sequentially assembled (e.g., two components are assembled into a semi-circle, four components into a circle), ultimately forming an "integrated sealing gasket structure" that matches the target sealing surface size. Once all sealing components 1 are in place, the threaded channels on the outer periphery of the sealing component 1 automatically align with the combined channels of the combined protrusion 2 (positioning design of the splicing structure). The countersunk bolt 4 is then screwed into the threaded channel until it passes through the combined channel and fully engages with the threaded channel of the adjacent sealing component 1. After the countersunk bolt 4 is tightened, the limiting plate 5 (a hollow structure that completely covers the countersunk bolt) is rotated around the axis. 4. The opening of the limiting plate 5 is aligned with the limiting frame 7 on the outer periphery of the sealing assembly 1. At this time, the movable plate 6 inside the limiting plate 5 tends to move towards the limiting frame 7 due to the compression thrust of the return spring 8, preventing the movable plate 6 from coming off. When the whole assembly is installed on the target sealing surface (such as a flange), if there are slight processing errors (unevenness) or deformation after long-term use on the sealing surface, the buffer spring 104 inside the sealing assembly will adaptively extend and retract. When the pressure of the sealing medium (such as fluid or gas) fluctuates, the buffer spring 104 can absorb the pressure shock. When the pressure increases, the buffer spring 104 is compressed to prevent the fan-shaped sealing gasket 101 from being deformed due to excessive compression. When the pressure decreases, the buffer spring 104 rebounds to maintain the contact force between the fan-shaped sealing gasket 101 and the sealing surface, ensuring stable sealing performance.

[0042] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing gasket with a positioning structure, comprising a plurality of sealing components (1), characterized in that, The sealing assembly (1) is connected to a combination protrusion (2) on one side, and a combination groove (3) adapted to the combination protrusion (2) is opened on the other side of the sealing assembly (1). A threaded channel communicating with the combination groove (3) is opened on the outer periphery of the sealing assembly (1). The threaded channel is threadedly connected to a countersunk bolt (4) for assembly and fixation. The side of the assembly protrusion (2) is provided with an assembly channel for the countersunk bolt (4) to pass through. The outer periphery of the sealing assembly (1) is rotatably connected to a hollow limiting plate (5) for limiting the countersunk bolt (4) via a rotating shaft. The inner cavity of the limiting plate (5) is provided with a movable plate (6). The outer periphery of the sealing assembly (1) is also connected to a limiting frame (7) adapted to the movable plate (6). A return spring (8) in a compressed state is connected between the movable plate (6) and the limiting plate (5).

2. The seal gasket with positioning structure according to claim 1, wherein, The outer periphery of the movable plate (6) is connected to a lever (9) for easy operation of the movable plate (6).

3. The seal gasket with positioning structure according to claim 1, wherein, The sealing assembly (1) includes: Two sector-shaped sealing gaskets (101); A connecting block (102) is fixedly connected to the side of one of the fan-shaped sealing gaskets (101). The side of the connecting block (102) is provided with multiple storage channels, and the side of the other fan-shaped sealing gasket (101) is connected with multiple sealing blocks (103) that are inserted into the storage channels.

4. The seal gasket with positioning structure according to claim 3, wherein, A buffer spring (104) with a buffering effect is connected between the sealing block (103) and the inner wall of the storage channel, and the number of the sealing components (1) is even.

5. The seal gasket with positioning structure of claim 3, wherein, One of the fan-shaped sealing gaskets (101) has multiple positioning grooves on its side, and the other fan-shaped sealing gasket (101) has multiple positioning hemispherical blocks (105) that are adapted to the positioning grooves connected to its side.

6. The seal gasket with positioning structure of claim 1, wherein, The side surface of the combined protrusion (2) is an arc-shaped surface that facilitates insertion.

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