A flange structure provided with a multi-layer sealing section

Abstract

The utility model relates to a flange structure technical field especially sets up a multilayer sealing section flange structure, including bolt, bolt outside thread connection has the sleeve rod, the sleeve rod is inserted in the first flange and sets up, the first flan one side is connected with the second flange, the second flan one side is installed chuck subassembly, the first flange includes left flange, and the left flange inside is equipped with the clamping hole, and the left flan one side is welded with annular convex surface, and the clamping hole one side is equipped with ring groove, and the ring groove is provided with sealing ring, and the annular convex surface one side is welded with tenon groove block, and the tenon groove block inside is equipped with the block interstice groove, and the second flange includes right flange, and the right flan one side is equipped with recess, and the right flange inside is equipped with alveolar groove, in the utility model, the composite elastic sealing and mechanical interlocking mechanism are introduced, make the device not only can withstand different size pressure fluctuation, also to axial tension, radial deviation and circumferential torsion and so on multidirectional stress load have very strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of flange structure technology, specifically a flange structure with multiple sealing sections. Background Technology

[0002] A flange, also called a flange plate or flange, is a disc-shaped metal component used to connect pipes, containers, valves and other equipment. Its core function is to achieve a detachable and fastened connection between two components. Its structure is usually a circular disc with bolt holes. When connecting, the two flange end faces are put together, a sealing gasket is sandwiched in the middle, and then the bolts are tightened evenly to achieve a sealed and firm connection.

[0003] Traditional flanges mostly use a single sealing section, and the sealing effect depends entirely on the compression of the gasket and the uniformity of the bolt preload. Once the gasket ages, the flange surface is slightly deformed, or the bolt preload weakens, media leakage is very likely to occur. Therefore, in order to avoid this situation, some equipment needs to use flanges with multiple sealing sections to form a "redundant seal" through multiple sealing surfaces. Even if a sealing section fails slightly, the other sealing surfaces can still maintain the sealing performance, which can effectively block the media leakage path.

[0004] However, to ensure that multiple sealing surfaces are uniformly pressurized and achieve effective sealing simultaneously, the flatness, roughness, and concentricity of each sealing surface must be strictly controlled within a very small tolerance range. Because there are almost no gaps between the sealing surfaces of a multi-layer sealing flange, the whole is in a rigid superposition state. Once a sealing surface loses its sealing function, the remaining sealing surfaces will suffer fatigue damage or local failure due to the additional deformation load, eventually leading to the complete collapse of the entire sealing system. The problems caused by its failure are more prominent and more serious than those of traditional single-layer sealing flanges. Therefore, a flange structure with multiple sealing sections is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a flange structure with multiple sealing sections to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flange structure with multiple sealing sections includes bolts, with a sleeve threaded to the outer side of each bolt. The sleeve is inserted into a first flange. A second flange is snapped onto one side of the first flange, and a chuck assembly is installed on one side of the second flange. The first flange includes a left flange with a locking hole on its inner side. An annular convex surface is welded to one side of the left flange, and an annular groove is formed on one side of the locking hole. A sealing ring is disposed in the annular groove. A tenon block is welded to one side of the annular convex surface, and an inter-block groove is formed on the inner side of the tenon block. A rubber bead is embedded in the inner side of the tenon block. The second flange includes a right flange with a groove on one side of the right flange, a threaded groove on the inner side of the right flange, and a shaped convex surface welded to one side of the right flange. A rubber ring is adhered to one side of the shaped convex surface, and a tenon block is adhered to one side of the rubber ring. The chuck assembly includes a chuck with a positioning groove on its edge and an insert plate welded to one side of the chuck.

[0008] As a further optimization of this utility model, the outer side of the annular convex surface is in contact with the inner side of the irregular convex surface, the vertical cross-section of the irregular convex surface is "L" shaped, and the side of the irregular convex surface away from the right flange abuts against the left flange.

[0009] As a further optimization of this utility model, the thickness of the tenon block is equal to the thickness of the tenon block, one side of the tenon block is arc-shaped, and a portion of the rubber bead is exposed on the outside of the tenon block and is located in the inter-block groove.

[0010] As a further optimization of this utility model, the inner side of the annular groove is arc-shaped, the outer side of the sealing ring is in contact with one side of the rubber ring, and the vertical cross-section of the sealing ring in its natural state is circular.

[0011] As a further optimization of this utility model, the rubber ring's lateral projection in its natural state is annular, and the central axis of the rubber ring and the central axis of the right flange are on the same straight line.

[0012] As a further optimization of this utility model, the following features are provided: the thickness of the chuck is the same as the depth of the groove; the outer side of the sleeve rod fits into the inner side of the positioning groove; and one side of the insert plate abuts against one side of the left flange.

[0013] As a further optimization of this utility model, the side of the insert plate that is not connected to the chuck is arc-shaped, the insert plate matches the tooth groove, and the outer side of the insert plate is attached to one side of the rubber ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, a composite elastic sealing and mechanical interlocking mechanism is introduced through the first flange, the second flange, and the chuck assembly. This enables the device to withstand pressure fluctuations of different magnitudes and to have a strong adaptability to multi-directional loads such as axial tension, radial offset, and circumferential torsion, thereby improving the reliability and failure resistance of the sealing system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall exploded structure of this utility model; Figure 3 This is a schematic diagram of the first flange structure of this utility model; Figure 4 This is a cross-sectional structural diagram of the first flange of this utility model; Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the second flange structure of this utility model; Figure 7 This is a schematic diagram of the cross-sectional structure of the second flange of this utility model; Figure 8 This is a schematic diagram of the chuck assembly structure of this utility model.

[0017] In the diagram: 1. Bolt; 2. Sleeve; 3. First flange; 31. Left flange; 32. Clamping hole; 33. Annular convex face; 34. Annular groove; 35. Sealing ring; 36. Tongue and groove block; 37. Inter-block groove; 38. Rubber bead; 4. Second flange; 41. Right flange; 42. Groove; 43. Thread; 44. Irregular convex face; 45. Rubber ring; 46. Tongue block; 5. Chuck assembly; 51. Chuck; 52. Positioning groove; 53. Insert plate; Detailed Implementation

[0018] 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.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Please see Figures 1-8 This utility model provides a technical solution:

[0021] A flange structure with multiple sealing sections includes bolts 1, with a sleeve 2 threadedly connected to the outer side of bolts 1. The sleeve 2 is inserted into a first flange 3. A second flange 4 is snapped onto one side of the first flange 3, and a chuck assembly 5 is installed on one side of the second flange 4. The first flange 3 includes a left flange 31, with a locking hole 32 on its inner side. An annular convex surface 33 is welded to one side of the left flange 31, and an annular groove 34 is formed on one side of the locking hole 32. A sealing ring 35 is placed in the annular groove 34, and a tenon is welded to one side of the annular convex surface 33. Block 36, the inner side of the tenon block 36 is provided with a block groove 37, the inner side of the tenon block 36 is embedded with a rubber bead 38, the second flange 4 includes a right flange 41, the right flange 41 is provided with a groove 42 on one side, the right flange 41 is provided with a toothed groove 43 on the inner side, the right flange 41 is provided with a shaped convex surface 44 welded on one side, the shaped convex surface 44 is attached to a rubber ring 45, the rubber ring 45 is attached to a tenon block 46 on one side, the chuck assembly 5 includes a chuck 51, the edge of the chuck 51 is provided with a positioning groove 52, and the chuck 51 is provided with an insert plate 53 welded to one side.

[0022] As a further implementation of this scheme, the outer side of the annular convex surface 33 is fitted with the inner side of the irregular convex surface 44. The vertical cross-section of the irregular convex surface 44 is "L" shaped. The side of the irregular convex surface 44 away from the right flange 41 abuts against the left flange 31. The design of the outer side of the annular convex surface 33 being fitted with the inner side of the irregular convex surface 44 makes it easy to align the right flange 41 and the left flange 31 during assembly. At the same time, the special shape of the irregular convex surface 44 can enhance the compressive strength of the two after splicing. The design of the side of the irregular convex surface 44 away from the right flange 41 abutting against the left flange 31 ensures that the forces on the right flange 41 and the left flange 31 along the axial direction after splicing can be transmitted between the components.

[0023] As a further implementation of this solution, the thickness of the tenon block 36 is equal to that of the tenon block 46. One side of the tenon block 46 is arc-shaped, and a portion of the rubber bead 38 is exposed on the outside of the tenon block 36 and located in the inter-block groove 37. The design that the thickness of the tenon block 36 is equal to that of the tenon block 46 allows both sides to form a flat fit with the other components, thereby improving the overall flatness and sealing reliability after assembly. The arc-shaped design on one side of the tenon block 46 allows it to better fit into the inter-block groove 37, while the rubber bead 38 can increase the friction between the tenon block 46 and the tenon block 36 when compressed.

[0024] As a further implementation of this solution, the inner side of the annular groove 34 is arc-shaped, and the outer side of the sealing ring 35 is in contact with one side of the rubber ring 45. The vertical cross-section of the sealing ring 35 in its natural state is circular. The arc-shaped design of the inner side of the annular groove 34 allows the sealing ring 35 to deform better in the annular groove 34 when compressed, thus avoiding scratches. The design of the outer side of the sealing ring 35 being in contact with one side of the rubber ring 45 allows the two elastically deformable components to jointly construct a sealing barrier, thereby enhancing the sealing performance of the device. The circular vertical cross-section of the sealing ring 35 in its natural state allows it to have better uniform rebound capability in all directions, thus forming a continuous, dead-zone-free sealing band when compressed.

[0025] As a further implementation of this solution, the rubber ring 45 has a ring-shaped transverse projection in its natural state. The central axis of the rubber ring 45 is on the same straight line as the central axis of the right flange 41. The side of the insert plate 53 that is not connected to the chuck 51 is arc-shaped. The insert plate 53 matches the tooth groove 43. The outer side of the insert plate 53 is in contact with one side of the rubber ring 45. The design of the rubber ring 45 having a ring-shaped transverse projection in its natural state allows it to gradually and evenly bend and deform radially when squeezed by the insert plate 53, and eventually fit with the outer side of the insert plate 53. The arc-shaped design of the side of the insert plate 53 that is not connected to the chuck 51 makes it easier to insert into the tooth groove 43, and also prevents the surface of the rubber ring 45 from being scratched when squeezed.

[0026] As a further implementation of this solution, the thickness of the chuck 51 is the same as the depth of the groove 42, the outer side of the sleeve 2 is in contact with the inner side of the positioning groove 52, and one side of the insert plate 53 is in contact with one side of the left flange 31. The design that the thickness of the chuck 51 is the same as the depth of the groove 42 allows the chuck 51 to be completely inserted into the groove 42, so that there is no part protruding outside the groove 42, avoiding the device from shaking and deforming due to collision. The design that the outer side of the sleeve 2 is in contact with the inner side of the positioning groove 52 allows the sleeve 2 to fix the left flange 31 and the right flange 41 while also limiting the chuck 51. The design that one side of the insert plate 53 is in contact with one side of the left flange 31 allows the insert plate 53 to also play a supporting role in connecting the left flange 31 and the right flange 41.

[0027] Workflow: During installation, the right flange 41 is first moved. The irregularly shaped convex surface 44 welded to one side of the right flange 41 and the rubber ring 45 fixed to it move the tenon 46, aligning its curved side with the opening of the inter-block groove 37. The tenon 46 is then inserted into the groove 67. The right flange 41 is then rotated, causing the tenon 46 to gradually penetrate deeper into the inter-block groove 37. As the tenon 46 penetrates deeper, the rubber bead 38 is gradually compressed and deformed, generating friction with the surface of the tenon 46, increasing the coefficient of friction between the tenon 46 and the mortise block 36. When the tenon 46 is fully inserted into the inter-block groove 37, the right flange 41 can no longer rotate, ensuring good concentricity between the right flange 41 and the left flange 31. Next, the chuck 51 is moved, causing the insert plate 53 fixed to one side of the chuck 51 to insert into the groove 43. The groove 43 then... Squeeze the rubber ring 45 to bend it, wrapping the tenon 46 and the mortise block 36 around it. At the same time, it presses against the outside of the sealing ring 35. Then, insert the sleeve 2 into the clamping hole 32 and pass through the right flange 41. Next, screw the bolt 1 into the sleeve 2 and tighten the nut. The bolt 1 and the sleeve 2 together fix the first flange 3 and the second flange 4. The bolt 1 also restricts the movement of the chuck 51 in the groove 42, so that the chuck assembly 5 and the second flange 4 form a whole. The device is then installed. When the device is put into use, when the fluid flows through the chuck assembly 5 and the second flange 4 and then through the first flange 3, the fluid is guided by the rubber ring 45 and flows quickly. Due to the mutual compression between the rubber ring 45 and the sealing ring 35, the fluid cannot enter the gaps between other parts. At the same time, the elastic properties of the rubber ring 45 and the sealing ring 35 allow them to withstand different pressure fluctuations without sealing failure.

[0028] 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 flange structure with multiple sealing sections, comprising bolts (1), characterized in that: The bolt (1) is threaded with a sleeve (2) on the outside. The sleeve (2) is inserted into the first flange (3). A second flange (4) is snapped onto one side of the first flange (3). A chuck assembly (5) is installed on one side of the second flange (4). The first flange (3) includes a left flange (31), a retaining hole (32) is provided on the inner side of the left flange (31), an annular convex surface (33) is welded on one side of the left flange (31), an annular groove (34) is provided on one side of the retaining hole (32), a sealing ring (35) is provided in the annular groove (34), a tenon block (36) is welded on one side of the annular convex surface (33), an inter-block groove (37) is provided on the inner side of the tenon block (36), and a rubber bead (38) is embedded on the inner side of the tenon block (36). The second flange (4) includes a right flange (41), a groove (42) is provided on one side of the right flange (41), a toothed groove (43) is provided on the inner side of the right flange (41), a shaped convex surface (44) is welded on one side of the right flange (41), a rubber ring (45) is bonded to one side of the shaped convex surface (44), and a tenon (46) is bonded to one side of the rubber ring (45). The chuck assembly (5) includes a chuck (51), a positioning groove (52) is provided at the edge of the chuck (51), and an insert plate (53) is welded to one side of the chuck (51).

2. The flange structure with multiple sealing sections according to claim 1, characterized in that: The outer side of the annular convex surface (33) is in contact with the inner side of the irregular convex surface (44). The vertical cross section of the irregular convex surface (44) is "L" shaped. The side of the irregular convex surface (44) away from the right flange (41) is in contact with the left flange (31).

3. The flange structure with multiple sealing sections according to claim 1, characterized in that: The thickness of the tenon block (36) is equal to the thickness of the tenon block (46). One side of the tenon block (46) is arc-shaped. A portion of the rubber bead (38) is exposed on the outside of the tenon block (36) and is located in the inter-block groove (37).

4. A flange structure with multiple sealing sections according to claim 1, characterized in that: The inner side of the annular groove (34) is arc-shaped, the outer side of the sealing ring (35) is in contact with one side of the rubber ring (45), and the vertical cross section of the sealing ring (35) in its natural state is circular.

5. A flange structure with multiple sealing sections according to claim 1, characterized in that: The rubber ring (45) is annular in its natural state, and the central axis of the rubber ring (45) is on the same straight line as the central axis of the right flange (41).

6. A flange structure with multiple sealing sections according to claim 2, characterized in that: The thickness of the chuck (51) is the same as the depth of the groove (42), the outer side of the sleeve (2) is in contact with the inner side of the positioning groove (52), and one side of the insert plate (53) is in contact with one side of the left flange (31).

7. A flange structure with multiple sealing sections according to claim 1, characterized in that: The side of the insert plate (53) that is not connected to the chuck (51) is arc-shaped. The insert plate (53) matches the tooth groove (43). The outer side of the insert plate (53) is attached to one side of the rubber ring (45).

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