Anti-corrosion connecting structure

Abstract

The utility model belongs to the technical field of bolts, and particularly relates to an anti-corrosion connecting structure which comprises a bolt, a nut assembly and a gasket, the nut assembly and the gasket are in threaded connection with the bolt, the bolt comprises a bolt body, and the bolt body is provided with external threads; the nut assembly comprises a nut and a nut sleeve which are integrally connected, the bottom of the nut sleeve is sealed, the upper portion of the nut sleeve is connected with the nut, and internal threads are arranged on the inner wall of the nut and the inner wall of the nut sleeve. Anti-corrosion layers are sprayed on the outer surfaces of the bolt body, the nut and the nut sleeve. The connecting position of the bolt body and the nut is sealed and protected through the gasket, the tail end of the bolt body is isolated from the outside through the nut sleeve, the anti-corrosion effect is improved, the outer surface of the bolt body, the outer surface of the nut and the outer surface of the nut sleeve are coated with the anti-corrosion layers, and the overall anti-corrosion effect is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolts, and in particular relates to an anti-corrosion connection structure. Background Art

[0002] The electrolytic rectifier of the galvanizing line cleaning is a vertical tank structure. The distance between the left and right electrode plates of the vertical tank structure is relatively close, and stray current between the plates will be generated. The stray current will reduce the efficiency of electrolytic cleaning and accelerate the consumption of the electrode plates. In order to solve the problem of stray current between the plates, ensure the efficiency of electrolytic cleaning and protect the electrode plates, an insulating plate is used in the middle of the electrode plates for electrical isolation. The problem is that the mounting bolts on the insulating partition are severely corroded and damaged by the electrolytic reaction, and the service life of the bolts is short. The fixing structure of the insulating partition is installed on the electrode plate on the outlet side of the electrolytic equipment by metal bolts. The metal bolts cause poor local electric field shielding and generate stray current. When the insulating bolts are completely used instead of the metal bolts, the insufficient strength will cause the bolts to break, causing the insulating plate to fall off into the tank and cause a belt break accident.

[0003] The key reasons for these problems are: the bolt composition structure in the prior art is single, the corrosion resistance is relatively low, and the strength of the bolt is reduced after corrosion. For this reason, an anti-corrosion connection structure is improved and designed. Utility Model Content

[0004] In view of the above-mentioned deficiencies existing in the prior art, the utility model provides an anti-corrosion connection structure to solve the above-mentioned problems in the background technology.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An anti-corrosion connection structure comprises a bolt, a nut assembly threadedly connected to the bolt, and a gasket, wherein the bolt comprises a bolt body, and the bolt body is provided with an external thread;

[0007] The nut assembly comprises a nut and a nut sleeve connected in one piece, the bottom of the nut sleeve is sealed, the upper part of the nut sleeve is connected to the nut, and the inner walls of the nut and the nut sleeve are provided with internal threads;

[0008] The outer surfaces of the bolt body, the nut and the nut sleeve are sprayed with an anti-corrosion layer.

[0009] By adopting the above-mentioned structural design, the anti-corrosion connection structure includes a bolt, a nut assembly threadedly connected to the bolt, and a gasket, wherein the nut assembly further includes a nut and a nut sleeve connected as an integral part, wherein the bottom of the nut sleeve is sealed, and the gasket seals and protects the bolt body and the nut connection position, and the nut sleeve isolates the rear end of the bolt body from the outside world, thereby improving the anti-corrosion effect, and the outer surfaces of the bolt body, the nut and the nut sleeve are sprayed with an anti-corrosion layer to enhance the overall anti-corrosion effect.

[0010] Furthermore, there are two gaskets, namely a first sealing gasket and a second sealing gasket, wherein the second sealing gasket is connected to a nut.

[0011] Furthermore, a circular groove is formed on the top of the nut, and a tubular protrusion protrudes downward from the bottom of the second sealing gasket, and the protrusion can be correspondingly inserted into the groove.

[0012] By adopting the above structural design, a protrusion is provided at the bottom of the second sealing gasket and a circular groove is provided at the top of the nut. When the second sealing gasket and the nut are connected, the protrusion extends into the groove to achieve a sealed connection between the second sealing gasket and the nut, isolating the thread on the inner wall of the nut from the outside world to a certain extent, thereby playing a protective role.

[0013] Furthermore, a nut is provided on the top of the bolt body.

[0014] Furthermore, the anti-corrosion layer is a mixture of nickel powder, zinc powder and chromic acid. A very thin passivation film can be quickly formed on the surface of the connection structure, which can resist corrosion from the atmosphere, alkali and certain acids, and can effectively protect the outer wall of the connection structure, preventing the outer wall of the connection structure from being corroded and causing damage to the threads of the outer wall of the connection structure.

[0015] Furthermore, the gasket is made of rubber material.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The anti-corrosion connection structure includes a bolt, a nut assembly threadedly connected to the bolt, and a gasket, wherein the nut assembly further includes a nut and a nut sleeve connected in one piece, wherein the bottom of the nut sleeve is sealed, and the gasket seals and protects the connection position between the bolt body and the nut, and the nut sleeve isolates the tail end of the bolt body from the outside world, thereby improving the anti-corrosion effect, and the outer surfaces of the bolt body, the nut and the nut sleeve are sprayed with an anti-corrosion layer to enhance the overall anti-corrosion effect;

[0018] 2. A protrusion is provided at the bottom of the second sealing gasket and a circular groove is provided at the top of the nut. When the second sealing gasket and the nut are connected, the protrusion extends into the groove to achieve a sealed connection between the second sealing gasket and the nut, isolating the thread on the inner wall of the nut from the outside world to a certain extent, thereby playing a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a bolt assembly in the prior art;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of an anti-corrosion connection structure of the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of a nut assembly in an embodiment of an anti-corrosion connection structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the second sealing gasket in an embodiment of an anti-corrosion connection structure of the utility model;

[0023] The reference numerals in the drawings of the specification include:

[0024] A bolt (1), a bolt body (11), a nut (12), a first sealing gasket (2), a second sealing gasket (3), a protrusion (31), a nut assembly (4), a nut (41), a groove (411), a nut sleeve (42), an internal thread (43), and an anti-corrosion layer (01). DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Embodiment 1:

[0030] like Figure 2-4 Specifically, an anti-corrosion connection structure includes a bolt 1 and a nut assembly 4 threadedly connected to the bolt 1 and a gasket, wherein the bolt 1 includes a bolt body 11, and the bolt body 11 is provided with an external thread; the nut assembly 4 includes an integrally connected nut 41 and a nut sleeve 42, the bottom of the nut sleeve 42 is sealed, the upper part of the nut sleeve 42 is connected to the nut 41, and the inner walls of the nut 41 and the nut sleeve 42 are provided with an internal thread 43; the outer surfaces of the bolt body 11, the nut 41 and the nut sleeve 42 are sprayed with an anti-corrosion layer 01. By adopting the above-mentioned structural design, the anti-corrosion connection structure includes a bolt 1 and a nut assembly 4 threadedly connected to the bolt 1 and a gasket, wherein the nut assembly 4 further includes a nut 41 and a nut sleeve 42 that are integrally connected, wherein the bottom of the nut sleeve 42 is sealed, and the gasket seals and protects the connection position between the bolt body 11 and the nut 41, and the nut sleeve 42 isolates the rear end of the bolt body 11 from the outside world, thereby improving the anti-corrosion effect, and the outer surfaces of the bolt body 11, the nut 41 and the nut sleeve 42 are sprayed with an anti-corrosion layer 01 to enhance the overall anti-corrosion effect.

[0031] In this embodiment, there are two gaskets, namely, the first sealing gasket 2 and the second sealing gasket 3, wherein the second sealing gasket 3 is connected to the nut 41. A circular groove 411 is provided at the top of the nut 41, and a tubular protrusion 31 protrudes downward from the bottom of the second sealing gasket 3, and the protrusion 31 can be correspondingly inserted into the groove 411. By adopting the above structural design, the bottom of the second sealing gasket 3 is provided with a protrusion 31, and the top of the nut 41 is provided with a circular groove 411. When the second sealing gasket 3 and the nut 41 are connected, the protrusion 31 extends into the groove 411, so that the second sealing gasket 3 and the nut 41 are sealed and connected, and the thread 43 on the inner wall of the nut 41 is isolated from the outside to a certain extent, which plays a protective role.

[0032] In this embodiment, a nut 12 is disposed on the top of the bolt body 11 .

[0033] In this embodiment, the anti-corrosion layer 01 is a mixture of nickel powder, zinc powder and chromic acid. A very thin passivation film can be quickly formed on the surface of the connection structure, which can resist corrosion from the atmosphere, alkali and certain acids, and can effectively protect the outer wall of the connection structure, preventing the outer wall of the connection structure from being corroded and causing damage to the threads of the outer wall of the connection structure.

[0034] In this embodiment, the gasket is made of rubber material.

[0035] Working principle: The anti-corrosion connection structure includes a bolt 1 and a nut assembly 4 threadedly connected to the bolt 1, and a gasket, wherein the nut assembly 4 further includes a nut 41 and a nut sleeve 42 connected as an integral part, wherein the bottom of the nut sleeve 42 is sealed, and the gasket seals and protects the connection position between the bolt body 11 and the nut 41, and the nut sleeve 42 isolates the tail end of the bolt body 11 from the outside world to improve the anti-corrosion effect. The outer surfaces of the bolt body 11, the nut 41 and the nut sleeve 42 are sprayed with an anti-corrosion layer 01 to enhance the overall anti-corrosion effect. A protrusion 31 is provided at the bottom of the second sealing gasket 3, and a circular groove 411 is provided at the top of the nut 41. When the second sealing gasket 3 and the nut 41 are connected, the protrusion 31 extends into the groove 411 to achieve a sealed connection between the second sealing gasket 3 and the nut 41, isolating the thread 43 on the inner wall of the nut 41 from the outside world to a certain extent, thereby playing a protective role.

[0036] The above are only embodiments of the utility model, and the circuits, electronic components and modules involved are all prior art, which can be fully implemented by those skilled in the art. It is needless to say that the content protected by this application does not involve improvements to software and methods. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the prior art in the field, and have the ability to apply conventional experimental means before the date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A corrosion-resistant connection structure, comprising a bolt (1), a nut assembly (4) threadedly connected to the bolt (1), and a gasket, characterized in that: The bolt (1) comprises a bolt body (11), and the bolt body (11) is provided with an external thread; The nut assembly (4) comprises a nut (41) and a nut sleeve (42) connected in one piece, the bottom of the nut sleeve (42) is sealed, the upper part of the nut sleeve (42) is connected to the nut (41), and the inner walls of the nut (41) and the nut sleeve (42) are provided with internal threads (43); The outer surfaces of the bolt body (11), the nut (41) and the nut sleeve (42) are sprayed with an anti-corrosion layer (01).

2. The anti-corrosion connection structure according to claim 1, characterized in that: There are two gaskets, namely a first sealing gasket (2) and a second sealing gasket (3), wherein the second sealing gasket (3) is connected to a nut (41).

3. The anti-corrosion connection structure according to claim 2, characterized in that: A circular groove (411) is formed on the top of the nut (41), and a tubular protrusion (31) protrudes downward from the bottom of the second sealing gasket (3), and the protrusion (31) can be correspondingly inserted into the groove (411).

4. The anti-corrosion connection structure according to claim 1, characterized in that: A nut (12) is provided on the top of the bolt body (11).

5. The anti-corrosion connection structure according to claim 2, characterized in that: The gasket is made of rubber material.

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