Joint sealing structure

Abstract

The utility model discloses a joint sealing structure which comprises a bolt assembly for fixing flange plates of two joint bodies, a first sealing ring is arranged between the two flange plates, the bolt assembly is provided with a tightening latch body, the tightening latch body is in threaded connection with a limiting nut, the tightening latch body is sleeved with a spring, the spring is in a compressed state, and the first sealing ring is in threaded connection with the limiting nut. Relates to the technical field of joint sealing, and is characterized in that two joint bodies are fixed through a long bolt, a tightening latch body is sleeved with a spring, and a limiting nut is tightened to compress the spring, so that even if a sealing ring is corroded, deteriorated and thinned, two flange plates can still tightly extrude the sealing ring under the elastic force of the spring; therefore, the continuity of the sealing effect is ensured; the sealing shell is arranged to wrap the bolt assembly, so that the bolt assembly is located in the sealed cavity, the possibility that the bolt assembly is corroded is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of joint sealing, in particular to a joint sealing structure. Background Art

[0002] When two existing joints are butt-sealed, a sealing ring is arranged between the two joints and then the two joints are fixed with bolts, thereby squeezing the sealing ring so that the sealing ring is squeezed and deformed; however, the sealing ring is gradually corroded and deteriorated due to long-term exposure to the air, and as the sealing ring hardens, it gradually loses its sealing function, thereby causing leakage in the joint. Utility Model Content

[0003] In view of the problems existing in an existing joint sealing structure, the utility model is proposed.

[0004] Therefore, the purpose of the utility model is to provide a joint sealing structure, which solves the problem that when two joints are butt-sealed, a sealing ring is arranged between the two joints and the two joints are fixed with bolts, thereby squeezing the sealing ring so that the sealing ring is squeezed and deformed; however, the sealing ring is gradually corroded and deteriorated due to long-term exposure to the air, and as the sealing ring hardens, the sealing function is gradually lost, thereby causing the joint to leak.

[0005] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0006] A joint sealing structure includes a bolt assembly for fixing flanges of two joint bodies, a first sealing ring is arranged between the two flanges, the bolt assembly has a bolt rod body, a limiting nut is threadedly connected to the bolt rod body, a spring is sleeved on the bolt rod body, the spring is in a compressed state, and a nut is integrally provided at one end of the bolt rod body.

[0007] The first sealing ring is provided with a first through hole, the flange is provided with a second through hole, and the bolt rod body passes through the first through hole and the second through hole;

[0008] The diameters of the limiting nut and the spring are both larger than the diameters of the first through hole and the second through hole.

[0009] Two springs are provided, one of which is located between the limiting nut and the flange, and the other spring is located between the nut and the flange.

[0010] As a preferred solution of the joint sealing structure described in the utility model, wherein: a first sealing shell is commonly sleeved on the outer sides of the two flanges;

[0011] The first sealing shell is composed of two first spliced ​​half shells, a sealing ring is bonded at the opening of the first spliced ​​half shell, and the two first spliced ​​half shells are connected by bolts.

[0012] As a preferred solution of the joint sealing structure described in the utility model, a first fixing block is welded on the outer wall of the first spliced ​​half shell, and two adjacent first fixing blocks on the two first spliced ​​half shells are fixed by bolts.

[0013] As a preferred solution of the joint sealing structure described in the utility model, wherein: a second sealing shell is commonly sleeved on the outer sides of the two flanges;

[0014] The second sealing shell is composed of two second spliced ​​half shells, a second sealing ring is bonded to the opening of the second spliced ​​half shell, and the two second spliced ​​half shells are connected by bolts.

[0015] As a preferred solution of the joint sealing structure described in the utility model, a second fixing block is welded on the outer wall of the first spliced ​​half shell, and two adjacent second fixing blocks on the two second spliced ​​half shells are fixed by bolts.

[0016] Compared with existing technologies:

[0017] 1. The two joint bodies are fixed by long bolts, and a spring is set on the bolt rod body. The spring is compressed by tightening the limit nut. Therefore, even if the sealing ring is corroded and deteriorated and becomes thinner, the two flanges can still squeeze the sealing ring tightly under the elastic force of the spring, thereby ensuring the continuity of the sealing effect;

[0018] 2. By providing a sealed shell to wrap the bolt assembly, the bolt assembly is located in a closed cavity, which reduces the possibility of corrosion of the bolt assembly and prolongs its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure provided for Example 1 of the utility model;

[0020] Figure 2 A side view of the sealing ring provided in Example 1 of the utility model;

[0021] Figure 3 A side view of the connector body provided in Example 1 of the utility model;

[0022] Figure 4 A schematic diagram of the structure provided for Embodiment 2 of the present utility model;

[0023] Figure 5 A schematic diagram of the structure provided for Embodiment 3 of the present utility model;

[0024] Figure 6 The utility model embodiment 3 provides Figure 5 A schematic diagram after removing the first sealing shell;

[0025] Figure 7 This is an exploded view of the side view of the first sealed shell provided in Example 3 of the utility model.

[0026] In the figure: joint body 1, flange 11, second through hole 111, first sealing ring 2, first through hole 21, bolt rod body 31, limit nut 32, spring 33, nut 34, first spliced ​​half shell 4, first fixing block 41, second sealing ring 5, second spliced ​​half shell 6, second fixing block 61. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the implementation methods of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Embodiment 1:

[0029] The utility model provides a joint sealing structure, please refer to Figure 1-3 , including a bolt assembly for fixing the flanges 11 of the two joint bodies 1, a first sealing ring 2 is arranged between the two flanges 11, the bolt assembly has a bolt rod body 31, a limiting nut 32 is threadedly connected to the bolt rod body 31, a nut 34 is integrally provided at one end of the bolt rod body 31, a spring 33 is sleeved on the bolt rod body 31, and the spring 33 is in a compressed state.

[0030] The spring 33 can be located between the limit nut 32 and the flange 11, or between the nut 34 and the flange 11. During installation, the limit nut 32 is tightened to compress the spring 33. Therefore, even if the first sealing ring 2 corrodes and deteriorates and becomes thinner, the elastic force of the spring 33 can still drive the two flanges 11 to squeeze the first sealing ring 2 tightly. Of course, this structure can also be used for docking of non-joint bodies, and can also be used on the joints of other components.

[0031] The first sealing ring 2 is provided with a first through hole 21, the flange 11 is provided with a second through hole 111, and the bolt rod body 31 passes through the first through hole 21 and the second through hole 111;

[0032] The diameters of the limiting nut 32 and the spring 33 are both larger than the diameters of the first through hole 21 and the second through hole 111 .

[0033] During specific use, the sealing ring is placed between the two joint bodies 1, the bolt rod body 31 is passed through the two joint bodies 1 and the first sealing ring 2, the spring 33 is sleeved on the bolt rod body 31, and the limiting nut 32 is screwed on the bolt rod body 31. The limiting nut 32 is screwed to squeeze the spring 33, so that the spring 33 is compressed; during use, even if the first sealing ring 2 is corroded, deteriorated and thinned, under the elastic force of the spring 33, the two joint bodies 1 can still squeeze the first sealing ring 2 tightly.

[0034] Embodiment 2:

[0035] See attached Figure 4 , which is different from Example 1, is that two springs 33 are provided, one of which is located between the limiting nut 32 and the flange 11 , and the other spring 33 is located between the nut 34 and the flange 11 .

[0036] During specific use, the sealing ring is placed between the two joint bodies 1, a spring 33 is put on the bolt rod body 31, the bolt rod body 31 passes through the two joint bodies 1 and the first sealing ring 2, and then another spring 33 is put on the bolt rod body 31, and the limiting nut 32 is screwed on the bolt rod body 31, and the limiting nut 32 is screwed to squeeze the spring 33, so that the two springs 33 are compressed; during use, even if the first sealing ring 2 is corroded, deteriorated and thinned, under the elastic force of the spring 33, the two joint bodies 1 can still squeeze the first sealing ring 2 tightly.

[0037] Embodiment 3:

[0038] See attached Figure 5-7 , which is different from the first embodiment: a first sealing housing is commonly sleeved on the outer sides of the two flanges 11;

[0039] The first sealed shell is composed of two first spliced ​​half shells 4, a second sealing ring 5 is bonded to the opening of the first spliced ​​half shells 4, and the two first spliced ​​half shells 4 are connected by bolts. Specifically, a first fixing block 41 is welded on the outer wall of the first spliced ​​half shells 4, and two adjacent first fixing blocks 41 on the two first spliced ​​half shells 4 are fixed by bolts.

[0040] When in use, the sealing ring is placed between the two joint bodies 1, the bolt rod body 31 is passed through the two joint bodies 1 and the first sealing ring 2, the spring 33 is sleeved on the bolt rod body 31, and the limiting nut 32 is screwed on the bolt rod body 31, and the limiting nut 32 is screwed to squeeze the spring 33, so that the spring 33 is compressed; during use, even if the first sealing ring 2 is corroded, deteriorated and becomes thinner, under the elastic force of the spring 33, the two joint bodies 1 can still squeeze the first sealing ring 2 tightly; the two first spliced ​​half shells 4 are sleeved on the flange 11 to seal the spring assembly, thereby avoiding the spring 32, the limiting nut 32 and the bolt rod body 31 in the spring assembly from being exposed, thereby realizing sealing protection for the bolt assembly.

[0041] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A joint sealing structure, comprising a bolt assembly for fixing flanges (11) of two joint bodies (1), a first sealing ring (2) being arranged between the two flanges (11), the bolt assembly having a bolt rod body (31), a limit nut (32) being threadedly connected to the bolt rod body (31), characterized in that: A spring (33) is sleeved on the bolt rod body (31), and the spring (33) is in a compressed state. A nut (34) is integrally provided at one end of the bolt rod body (31); The first sealing ring (2) is provided with a first through hole (21), the flange (11) is provided with a second through hole (111), and the bolt rod body (31) passes through the first through hole (21) and the second through hole (111); The diameters of the limiting nut (32) and the spring (33) are both larger than the diameters of the first through hole (21) and the second through hole (111); Two springs (33) are provided, one of which is located between the limiting nut (32) and the flange (11), and the other of which is located between the nut (34) and the flange (11).

2. A joint sealing structure according to claim 1, characterized in that: A first sealing shell is commonly sleeved on the outer sides of the two flanges (11); The first sealing shell is composed of two first spliced ​​half shells (4), a second sealing ring (5) is bonded to the opening of the first spliced ​​half shell (4), and the two first spliced ​​half shells (4) are connected by bolts.

3. A joint sealing structure according to claim 2, characterized in that: A first fixing block (41) is welded on the outer wall of the first spliced ​​half shell (4), and two adjacent first fixing blocks (41) on the two first spliced ​​half shells (4) are fixed by bolts.

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