Corrosion-resistant bolt connecting structure

Abstract

The utility model discloses an anti-corrosion bolt connecting structure which comprises a bolt structure and a nut structure, a hexagonal anti-corrosion locking block capable of sealing the end of a screw is arranged at the bottom of the nut structure, a first gasket structure is arranged at the top of the nut structure, and a second gasket structure is arranged between the nut structure and the hexagonal anti-corrosion locking block. A first sealing ring is arranged between the nut structure and the first gasket structure, a second sealing ring and a third sealing ring are arranged above and below the second gasket structure, and an auxiliary sealing structure is arranged between the hexagonal head and the screw. Compared with the prior art, the anti-corrosion bolt has the advantages that the bolt structure, the nut structure and the hexagonal anti-corrosion locking block are matched with the auxiliary sealing structure, the gaskets and the sealing rings, so that the bolt can be subjected to full-wrapping sealing anti-corrosion operation, and the bolt made of a common material can be used for a long time in a high-corrosion environment; and repeated disassembly and assembly can also be performed.

Description

Technical Field

[0001] This utility model relates to the field of bolt structure technology, specifically to a corrosion-resistant bolt connection structure. Background Technology

[0002] Bolts are mechanical parts, cylindrical threaded fasteners that are used with nuts. They consist of a head and a shank, which is a cylinder with external threads. They are a type of fastener that needs to be used with a nut to fasten two parts with through holes.

[0003] In some highly corrosive conditions, bolts are prone to corrosion, rusting and becoming impossible to disassemble, or becoming loose as a whole. Traditional methods involve using material changes or applying an external coating for corrosion protection. However, anti-corrosion materials are generally not strong enough, while some high-strength corrosion-resistant materials have high production costs, and the coating is easily worn during installation and disassembly, so corrosion can still occur. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a corrosion-resistant bolt connection structure, addressing the shortcomings mentioned in the background art.

[0005] To solve the above technical problems, the technical solution provided by this utility model is: a corrosion-resistant bolt connection structure, including a bolt structure and a nut structure. The bolt structure includes a hexagonal head and a bottom thread. The inner side of the nut structure is provided with a first internal thread that matches the thread. The bottom of the nut structure is provided with a hexagonal anti-corrosion locking block that can seal the end of the thread.

[0006] The nut structure has a first washer structure on top, a second washer structure between the nut structure and the hexagonal anti-corrosion locking block, a first sealing ring between the nut structure and the first washer structure, a second sealing ring and a third sealing ring above and below the second washer structure, and an auxiliary sealing structure between the hexagonal head and the screw.

[0007] Furthermore, the hexagonal anti-corrosion locking block has a second internal thread for mating with the screw at its top, and an auxiliary groove is provided below the second internal thread inside the hexagonal anti-corrosion locking block to facilitate sealing and anti-corrosion work on the screw end.

[0008] Furthermore, the diameter of the auxiliary groove is larger than that of the screw, which ensures a sealed insertion even when the screw is long.

[0009] Furthermore, the auxiliary sealing structure includes a disc, and the bottom of the disc is provided with multiple fourth sealing rings, which can perform multi-ring sealing operations.

[0010] Furthermore, the outer side of the screw, the nut structure, and the inner side of the hexagonal anti-corrosion locking block are all coated with a nano-ceramic composite coating, which can be used for final anti-corrosion coating operations.

[0011] The advantages of this utility model compared with the prior art are as follows: This utility model, through the bolt structure, nut structure, and hexagonal anti-corrosion locking block, combined with the auxiliary sealing structure and multiple gaskets and sealing rings, can fully enclose the bolt for sealing and anti-corrosion operation, so that ordinary bolts can be used for a long time in highly corrosive environments and can also be disassembled and reassembled multiple times. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a corrosion-resistant bolt connection structure.

[0013] Figure 2 This is a schematic diagram of a bolt structure, which is a corrosion-resistant bolt connection structure.

[0014] Figure 3 This is a schematic diagram of a hexagonal anti-corrosion locking block structure for a corrosion-resistant bolt connection.

[0015] As shown in the figure: 1. Bolt structure; 2. Nut structure; 3. Hexagonal anti-corrosion locking block; 4. Hexagonal head; 5. Screw; 6. First internal thread; 7. Second internal thread; 8. First gasket structure; 9. First sealing ring; 10. Second gasket structure; 11. Second sealing ring; 12. Third sealing ring; 13. Auxiliary sealing structure; 14. Disc; 15. Fourth sealing ring; 16. Auxiliary groove. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Combined with appendix Figure 1-3 A corrosion-resistant bolt connection structure includes a bolt structure 1 and a nut structure 2. The bolt structure 1 includes a hexagonal head 4 and a bottom thread 5. The nut structure 2 has a first internal thread 6 that mates with the thread 5 on its inner side. The bottom of the nut structure 2 has a hexagonal anti-corrosion locking block 3 that can seal the end of the thread 5. The top of the hexagonal anti-corrosion locking block 3 has a second internal thread 7 that mates with the thread 5. The hexagonal anti-corrosion locking block 3 has an auxiliary groove 16 located below the second internal thread 7. The diameter of the auxiliary groove 16 is larger than that of the thread 5. That is, the bolt structure 1 and the nut structure 2 perform a preliminary sealing operation, but it is easy for the bolt to seep into the nut structure 2. Therefore, the hexagonal anti-corrosion locking block 3 can perform a sealing and protection operation on the end of the thread 5, so that after fixing, a comprehensive protective sealing and anti-corrosion operation can be performed.

[0018] The nut structure 2 has a first washer structure 8 on its top, a second washer structure 10 between the nut structure 2 and the hexagonal anti-corrosion locking block 3, a first sealing ring 9 between the nut structure 2 and the first washer structure 8, and a second sealing ring 11 and a third sealing ring 12 above and below the second washer structure 10. The washer structure and multiple sealing rings ensure the sealing of the connection surfaces of the bolt structure 1, the nut structure 2 and the hexagonal anti-corrosion locking block 3. In actual production, the outer diameters of the first washer structure 8 and the second washer structure 10 are generally large to ensure the compression of the sealing rings.

[0019] An auxiliary sealing structure 13 is provided between the hexagonal head 4 and the screw 5. The auxiliary sealing structure 13 includes a disc 14. The bottom of the disc 14 is provided with multiple fourth sealing rings 15. The disc 14 and the multiple fourth sealing rings 15 can increase the contact surface between the hexagonal head 4 and the fixed equipment, and at the same time, the multiple fourth sealing rings 15 can be used to perform multi-layer sealing.

[0020] The outer side of the screw 5, the inner side of the nut structure 2 and the hexagonal anti-corrosion locking block 3 are all coated with a nano-ceramic composite coating, which is composed of nano Al2O3 powder (particle size 50-100nm) and graphene epoxy anti-corrosion coating. The two-dimensional sheet structure of graphene can block the penetration path of corrosive media and at the same time give the coating a self-healing function. The nano-ceramic coating improves hardness and corrosion resistance, which can ensure the corrosion protection operation of the final end.

[0021] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A corrosion-resistant bolt connection structure, comprising a bolt structure (1) and a nut structure (2), wherein the bolt structure (1) comprises a hexagonal head (4) and a bottom thread (5), and the nut structure (2) has a first internal thread (6) that mates with the thread (5) on its inner side, characterized in that: The nut structure (2) is provided with a hexagonal anti-corrosion locking block (3) at the bottom, which can seal the end of the screw (5); The nut structure (2) is provided with a first washer structure (8) on the top, and a second washer structure (10) is provided between the nut structure (2) and the hexagonal anti-corrosion locking block (3). A first sealing ring (9) is provided between the nut structure (2) and the first washer structure (8). A second sealing ring (11) and a third sealing ring (12) are provided above and below the second washer structure (10). An auxiliary sealing structure (13) is provided between the hexagonal head (4) and the screw (5).

2. The corrosion-resistant bolt connection structure according to claim 1, characterized in that: The hexagonal anti-corrosion locking block (3) has a second internal thread (7) for a matching screw (5) at its top, and an auxiliary groove (16) is provided below the second internal thread (7) inside the hexagonal anti-corrosion locking block (3).

3. The corrosion-resistant bolt connection structure according to claim 2, characterized in that: The diameter of the auxiliary groove (16) is larger than that of the screw (5).

4. The corrosion-resistant bolt connection structure according to claim 1, characterized in that: The auxiliary sealing structure (13) includes a disc (14), and the bottom of the disc (14) is provided with a plurality of fourth sealing rings (15).

5. The corrosion-resistant bolt connection structure according to claim 1, characterized in that: The screw (5) is coated with a nano-ceramic composite coating on the outside, the nut structure (2) and the inside of the hexagonal anti-corrosion locking block (3).

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