CN219529523U - Corrosion-resistant special alloy nut - Google Patents

Abstract

The utility model relates to a nut and discloses an anti-corrosion special alloy nut, which comprises a nut body, wherein a base plate is arranged below the nut body, a connecting groove is formed above the nut body, a sealing cover is arranged on the nut body, the sealing cover is of a cylindrical structure with an opening below, the sealing cover can be arranged in the connecting groove in a vertically movable mode, a groove is formed at the bottom of the base plate, a first connecting ring is connected below the first connecting ring in a sliding mode, a connecting rod is connected above the first connecting ring, penetrates through the nut body and is positioned in the connecting groove, a second connecting ring is connected above the connecting rod, and the second connecting ring is arranged in the connecting groove.

Description

Corrosion-resistant special alloy nut

Technical Field

The utility model relates to a nut, in particular to an anti-corrosion special alloy nut.

Background

The nut is a common fastening connecting piece, under a part of severe working environment, the nut or the screw rod is contacted with corrosive liquid, the existing nut is simple in structure, the corrosive liquid cannot be prevented from entering the joint of the nut and the screw rod, once the screw thread fails after corrosion, the screw thread is difficult to install again after disassembly, and the problem of fastener failure is caused.

Disclosure of Invention

To solve the technical problems: the existing nut is simple in structure, corrosive liquid cannot be prevented from entering the joint of the nut and the screw rod, threads fail once the corrosive liquid is generated, the threads are difficult to install again after the screw rod is disassembled, and the problem of failure of a fastener is caused.

The utility model provides an anti-corrosion special alloy nut which comprises a nut body, wherein a base plate is arranged below the nut body, a connecting groove is formed above the nut body, a sealing cover is arranged on the nut body, the sealing cover is of a cylindrical structure with an opening at the lower part, and the sealing cover can be arranged in the connecting groove in a vertically movable mode.

Through the technical scheme: the sealing cover covers the tail end of the bolt connected with the nut body to prevent most of corrosive liquid from directly contacting with the bolt, further, the sealing cover and the connecting groove are matched to form a groove type sealing structure, so that the corrosive liquid can be prevented from entering the joint of the bolt and the nut body, and the purpose of corrosion prevention is realized.

As a further improvement of the technical scheme, a water retaining ring is arranged above the nut body, and the outer wall of the water retaining ring is obliquely arranged.

As a further improvement of the technical scheme, a sealing ring is arranged at the bottom of the base plate, and the sealing ring is of an annular structure.

As a further improvement of the technical scheme, the sealing cover is in threaded connection in the connecting groove.

As a further improvement of the technical scheme, the bottom of the base plate is provided with a groove, a first connecting ring is connected in the groove in a sliding manner, the sealing ring is connected below the first connecting ring, a connecting rod is connected above the first connecting ring, the connecting rod penetrates through the nut body to be located in the connecting groove, a second connecting ring is connected above the connecting rod, and the second connecting ring is arranged in the connecting groove.

As a further improvement of the technical scheme, the inner side of the connecting groove is provided with a threaded pore plate, and the thickness of the threaded pore plate is between 0.5 and 1 cm.

The utility model has the technical effects and advantages that: according to the utility model, the connecting gap between the nut body and the bolt is protected through the arranged sealing cover, so that corrosive liquid is prevented from falling into the connecting gap, in addition, the sealing ring can be pushed to be tightly attached to the surface of a workpiece below the nut body and further compacted through screwing the sealing cover, and the sealing performance is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a nut body according to the present utility model;

fig. 3 is a schematic view of a seal ring connection structure according to the present utility model.

Reference numerals illustrate:

10. a nut body; 11. a backing plate; 12. a water blocking ring; 13. a connecting groove; 14. a threaded orifice plate;

20. sealing cover;

30. a seal ring; 31. a first connection ring; 32. a connecting rod; 33. and a second connecting ring.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the detailed description. The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Examples

Referring to fig. 1-3, the present embodiment provides an anti-corrosion special alloy nut, which comprises a nut body 10, wherein the nut body 10 is made of S50C high-carbon special steel, the high-carbon special steel has increased hardness, good workability and is convenient for slotting and punching, a backing plate 11 is arranged below the nut body 10, the backing plate 11 and the nut are integrally formed, the backing plate is used as a skirt and can prevent water and dust, a connecting groove 13 is formed above the nut body 10, a sealing cover 20 is arranged on the nut body 10, the sealing cover 20 is in a cylindrical structure with an opening at the lower part, and the sealing cover 20 can be arranged in the connecting groove 13 in a vertically movable manner.

In addition, the water retaining ring 12 is arranged above the nut body 10, the outer wall of the water retaining ring 12 is obliquely arranged, specifically, the radius of the outer ring of the water retaining ring 12 is gradually reduced, the inner wall of the water retaining ring 12 is equal to the outer wall of the sealing cover 20 in size, and the water retaining ring is tightly attached to the outer wall of the sealing cover 20, so that most of corrosive liquid is guided to leave the joint of the sealing cover 20 and the nut body 10 through the inclined surface on the outer side of the water retaining ring 12 when the corrosive liquid falls down from the sealing cover 20, and the possibility that the corrosive liquid contacts with the inner side of the screw and the nut body 10 is reduced.

Further, referring to fig. 2, considering the problem of uneven surface of the workpiece contacting with the nut body 10, the bottom of the backing plate 11 is provided with the sealing ring 30, the sealing ring 30 has an annular structure, and in the process of tightening the nut body 10, the sealing ring 30 can adapt to the surface shape change so as to enable the lower part of the nut body 10 to enter a sealing state, thereby avoiding corrosive liquid from entering the junction of the backing plate 11 and the workpiece surface and the nut body 10 and the screw.

Further, in order to prevent the sealing cover 20 from falling, the sealing cover 20 is screwed in the connecting groove 13, so that the sealing cover 20 can be quickly fixed on the nut body 10 in a threaded connection manner, and preferably, an internal thread is formed on the outer side of the sealing cover 20 to ensure that the water blocking ring 12 can be attached to the surface of the sealing cover 20.

In addition, referring to fig. 2 and 3, the bottom of the backing plate 11 is provided with a groove, a first connecting ring 31 is slidably connected in the groove, a sealing ring 30 is connected below the first connecting ring 31, a connecting rod 32 is connected above the first connecting ring 31, the connecting rod 32 passes through the nut body 10 and is located in the connecting groove 13, a second connecting ring 33 is connected above the connecting rod 32, the second connecting ring 33 is arranged in the connecting groove 13, and in the process of screwing the sealing cover 20, the sealing cover 20 pushes the connecting rod 32 and the second connecting ring 33 to move in the connecting groove 13 so as to press the sealing ring 30, so that the sealing ring 30 is tightly attached to the surface of a workpiece, the sealing isolation effect of the sealing ring 30 is improved, the contact area between the sealing ring 30 and the sealing cover 20 can be increased through the second connecting ring 33, and the pressing force of the first connecting ring 31 is more uniform.

Further, the inner side of the connecting slot 13 is provided with a threaded hole plate 14, the thickness of the threaded hole plate 14 is between 0.5 cm and 1 cm, in this embodiment, the connecting slot 13 is made of special high carbon steel with high hardness, for example, S50C, the hardness of the connecting slot is between 143 HBS and 187HBS, based on the above hardness condition, the minimum thickness of the connecting performance of the threaded hole plate 14 is ensured to be 0.5 cm, and the maximum size should be set to be 1 cm in consideration of the overall size limitation.

When the special anti-corrosion alloy nut is used, the end of the bolt connected with the nut body 10 is covered by the sealing cover 20 to prevent most of corrosion liquid from directly contacting with the bolt, further, the sealing cover 20 and the connecting groove 13 are matched to form a groove type sealing structure, so that the corrosion liquid can be prevented from entering a position between the bolt and the joint of the nut body 10, the corrosion is prevented to the greatest extent, meanwhile, the backing plate 11 at the bottom of the nut body 10 can also prevent part of the corrosion liquid from entering a position below the nut body 10 and the joint of the bolt when contacting with the surface of a workpiece, and the performance of the corrosion liquid is further increased.

It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present utility model without the inventive step, are intended to be within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims (6)

1. The utility model provides a special alloy nut of anticorrosion, includes nut body (10), its characterized in that: the nut is characterized in that a backing plate (11) is arranged below the nut body (10), a connecting groove (13) is formed in the upper portion of the nut body (10), a sealing cover (20) is arranged on the nut body (10), the sealing cover (20) is of a cylindrical structure with an opening in the lower portion, and the sealing cover (20) can be arranged in the connecting groove (13) in a vertically movable mode.

2. The corrosion-resistant specialty alloy nut of claim 1, wherein: a water retaining ring (12) is arranged above the nut body (10), and the outer wall of the water retaining ring (12) is obliquely arranged.

3. The corrosion-resistant specialty alloy nut of claim 1, wherein: the bottom of the base plate (11) is provided with a sealing ring (30), and the sealing ring (30) is of an annular structure.

4. The corrosion-resistant specialty alloy nut of claim 1, wherein: the sealing cover (20) is in threaded connection in the connecting groove (13).

5. A corrosion-resistant specialty alloy nut as set forth in claim 3 wherein: the novel connecting device is characterized in that a groove is formed in the bottom of the base plate (11), a first connecting ring (31) is connected in the groove in a sliding mode, a sealing ring (30) is connected below the first connecting ring (31), a connecting rod (32) is connected above the first connecting ring (31), the connecting rod (32) penetrates through a nut body (10) to be located in the connecting groove (13), a second connecting ring (33) is connected above the connecting rod (32), and the second connecting ring (33) is arranged in the connecting groove (13).

6. The corrosion-resistant specialty alloy nut of claim 1, wherein: the inner side of the connecting groove (13) is provided with a threaded pore plate (14), and the thickness of the threaded pore plate (14) is between 0.5 and 1 cm.