CN219795816U - Anti-loose airtight bolt - Google Patents
Anti-loose airtight bolt Download PDFInfo
- Publication number
- CN219795816U CN219795816U CN202320243987.4U CN202320243987U CN219795816U CN 219795816 U CN219795816 U CN 219795816U CN 202320243987 U CN202320243987 U CN 202320243987U CN 219795816 U CN219795816 U CN 219795816U
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- China
- Prior art keywords
- annular groove
- shoulder
- bolt head
- pressure plate
- bolt
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- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000003746 surface roughness Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses an anti-loosening airtight bolt, which comprises a bolt head; the bolt head is provided with a radial through hole; the pressure plate is connected with the bolt head, and a plane annular groove is embedded in one side of the pressure plate, which is away from the bolt head; the convex shoulders are sequentially connected with the pressure plate and are arranged on the same side with the plane annular groove; a cylindrical ring groove is arranged between the adjacent convex shoulders; the sealing ring is arranged in the plane annular groove and the cylindrical annular groove; and the threaded column is connected with the shoulder at the tail end. The anti-loosening airtight bolt is characterized in that a plane annular groove is embedded in a pressure plate, a plurality of convex shoulders are arranged, a cylindrical annular groove is arranged between the adjacent convex shoulders, sealing rings are respectively arranged in the plane annular groove and the cylindrical annular groove, pretightening force is generated on a threaded column in the compression process, meanwhile, a fuse can be penetrated into a radial small hole of a bolt head to realize secondary pretightening and loosening, and the bolt adopts double looseness prevention, so that better looseness prevention and high reliability of air tightness are realized.
Description
Technical Field
The utility model belongs to the technical field of mechanical sealing, and particularly relates to a locking airtight bolt.
Background
In the mechanical seal field, end face seal is usually a platen pressing end face seal ring seal, or seal ring is installed in by adopting a ring groove, the seal effect is poor, long screw thread looseness is easy to cause failure, and especially when gas or liquid is sealed, leakage is easy to occur.
The patent of application number CN201320730388.1 discloses a take bolt of sealing washer, including bolt head, connecting rod and the bolt shank that sets gradually, be equipped with the external screw thread on the bolt shank, be equipped with the annular on the connecting rod, be equipped with the sealing washer of adaptation annular in the annular, the junction of connecting rod and bolt head is equipped with the sealing washer, the other end that the bolt head corresponds the connecting rod is equipped with the recess, and the recess is the prism, is equipped with the needle file in the recess, needle file one end and bolt head fixed connection, the other end and recess opening parallel and level. The bolt is characterized in that the bolt connecting rod is provided with a ring groove, a sealing ring matched with the ring groove is arranged in the ring groove, and the other end of the bolt head corresponding to the connecting rod is provided with a groove. The bolt can be worn in the long-term use process, and particularly, the bolt is applied to special occasions needing strict sealing, for example, when the bolt is sealed with liquid and gas, the bolt is easy to loosen after being worn.
Disclosure of Invention
In order to solve the problems, the present utility model aims to provide a locking airtight bolt.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
an anti-loosening airtight bolt comprises a bolt head; the bolt head is provided with a radial through hole;
the pressure plate is connected with the bolt head, and a plane annular groove is embedded in one side of the pressure plate, which is away from the bolt head;
the convex shoulders are sequentially connected with the pressure plate and are arranged on the same side with the plane annular groove; a cylindrical ring groove is arranged between the adjacent convex shoulders;
the sealing ring is arranged in the plane annular groove and the cylindrical annular groove;
and the threaded column is connected with the shoulder at the tail end.
Preferably, the pressure plate, the planar annular groove, the shoulder and the cylindrical annular groove are arranged as coaxial complete revolution bodies.
Preferably, the number of the shoulders is two, and the two shoulders comprise a first shoulder and a second shoulder which are sequentially connected with the pressure plate; the threaded post is connected with the second shoulder.
Preferably, the inner diameter of the planar annular groove is larger than the outer diameter of the first shoulder, and the outer diameter of the planar annular groove is smaller than the outer diameter of the pressure plate.
Preferably, the first shoulder and the second shoulder have the same outer diameter and the surface roughness is less than Ra0.4.
Preferably, the threaded outer diameter of the threaded post is smaller than the outer diameter of the second shoulder.
Preferably, the bolt head is provided with one of a straight slot, a cross slot, an outer hexagonal slot and an inner hexagonal slot.
Preferably, the radial through hole penetrates through the side wall of the bolt head.
Compared with the prior art, the utility model has the following advantages:
according to the anti-loosening airtight bolt, the plane annular groove is embedded in the pressure plate, the plurality of convex shoulders are arranged, the cylindrical annular groove is arranged between the adjacent convex shoulders, the sealing rings are respectively arranged in the plane annular groove and the cylindrical annular groove, pretightening force is generated on the threaded column in the compression process, meanwhile, a fuse can be penetrated into a radial small hole of the bolt head to realize secondary pretightening and loosening prevention, and the bolt adopts double looseness prevention, so that better looseness prevention and high reliability of air tightness are realized.
Drawings
In order to more clearly illustrate the technical solutions of specific embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic view of a locking airtight bolt in the present utility model;
FIG. 2 is a schematic view of an alternative angle of a lockbolt according to the present utility model;
FIG. 3 is a schematic structural view of an embodiment of a lockbolt according to the present utility model;
reference numerals: the device comprises a bolt head, a pressure plate, a 3-plane annular groove, a 4-first shoulder, a 5-threaded column, a 6-second shoulder, a 7-cylindrical annular groove, an 8-plane annular groove sealing ring, a 9-cylindrical annular groove sealing ring, a 10-radial through hole, a 11-shell and a 12-fluid.
Detailed Description
The present utility model will be further described with reference to the drawings and the specific embodiments, but it should not be construed that the scope of the subject matter of the present utility model is limited to the following embodiments, and various modifications, substitutions and alterations made according to the ordinary skill and familiar means of the art to which this utility model pertains are included within the scope of the present utility model without departing from the above technical idea of the utility model.
Referring to fig. 1 and 2, the anti-loosening airtight bolt of the present utility model includes a bolt head 1, in this embodiment, the bolt head 1 is provided with a slot in a shape of a Chinese character 'i', and in other embodiments, the bolt head may be provided with one of a cross slot, an external hexagonal slot, and an internal hexagonal slot; the bolt head 1 is provided with a radial through hole 10, and the radial through hole 10 penetrates through the side wall of the bolt head 1. .
The pressure plate 2 is connected with the bolt head 1, a plane annular groove 3 is embedded in one side of the pressure plate 2 away from the bolt head 1, and the outer diameter of the plane annular groove 3 is smaller than the outer diameter of the pressure plate 2.
The convex shoulders are sequentially connected with the pressure plate 2 and are arranged on the same side with the planar annular groove 3; a cylindrical ring groove 7 is arranged between the adjacent convex shoulders; in this embodiment, the number of the shoulders is two, including a first shoulder 4 and a second shoulder 6 connected with the platen 2 in turn, and the outer diameters of the first shoulder 4 and the second shoulder 6 are equal, and the surface roughness should be less than ra0.4. A cylindrical ring groove 7 is provided between the first shoulder 4 and the second shoulder 6. The inner diameter of the planar annular groove 3 is greater than the outer diameter of the first shoulder 4.
The sealing rings are arranged in the plane annular groove 3 and the cylindrical annular groove 7 and are matched with the plane annular groove; for convenience of distinction, the seal ring disposed in the planar annular groove 3 is referred to as a planar annular groove seal ring 8; the seal ring in the cylindrical annular groove is referred to as a cylindrical annular groove seal ring 9.
And the threaded column 5 is connected with the shoulder at the tail end. In particular, the threaded post 5 is connected to the second shoulder 6. The threaded outer diameter of the threaded post 5 is smaller than the outer diameter of the second shoulder 6.
The pressure plate 2, the planar annular groove 3, the first shoulder 4, the second shoulder 6 and the cylindrical annular groove 7 are arranged as coaxial complete revolution bodies.
According to the anti-loosening airtight bolt, the plane annular groove is embedded in the pressure plate, the plurality of convex shoulders are arranged, the cylindrical annular groove is arranged between the adjacent convex shoulders, the sealing rings are respectively arranged in the plane annular groove and the cylindrical annular groove, pretightening force is generated on the threaded column in the compression process, meanwhile, a fuse can be penetrated into a radial small hole of the bolt head to realize secondary pretightening and loosening prevention, and the bolt adopts double looseness prevention, so that better looseness prevention and high reliability of air tightness are realized.
When the anti-loosening airtight bolt is used, referring to fig. 3, the plane annular groove sealing ring 8 is installed in the plane annular groove 3, the cylindrical annular groove sealing ring 9 is installed in the cylindrical annular groove 7, the assembled anti-loosening airtight bolt is installed in the shell 11, the anti-loosening airtight bolt is screwed down to the shell 11 by using a practical tool, a fuse passes through the radial through hole 10 and is locked with the shell 11, and at the moment, fluid 12 cannot overflow out of the shell 11 due to the action of the first shoulder 4, the second shoulder 6, the plane annular groove sealing ring 8 and the cylindrical annular groove sealing ring 9, and the anti-loosening airtight bolt has better anti-loosening airtight performance.
The above describes a kind of anti-loose airtight bolt provided by the present utility model in detail, and specific examples are applied to illustrate the structure and working principle of the present utility model, and the above description of the embodiments is only used to help understand the method and core idea of the present utility model. It should be noted that it will be apparent to those skilled in the art that various improvements and modifications can be made to the present utility model without departing from the principles of the utility model, and such improvements and modifications fall within the scope of the appended claims.
Claims (8)
1. An anti-loose airtight bolt, which is characterized in that: comprises a bolt head (1); the bolt head (1) is provided with a radial through hole (10);
the pressure plate (2) is connected with the bolt head (1), and a plane annular groove (3) is embedded in one side of the pressure plate (2) away from the bolt head (1);
the convex shoulders are sequentially connected with the pressure plate (2) and are arranged on the same side with the plane annular groove (3); a cylindrical ring groove (7) is arranged between the adjacent convex shoulders;
the sealing ring is arranged in the plane annular groove (3) and the cylindrical annular groove (7);
and the thread column (5) is connected with the shoulder at the tail end.
2. A lockbolt as claimed in claim 1, wherein: the pressure plate (2), the plane annular groove (3), the shoulder and the cylindrical annular groove (7) are arranged as coaxial complete revolution bodies.
3. A lockbolt as claimed in claim 1 or claim 2, wherein: the number of the convex shoulders is two, and the two convex shoulders comprise a first convex shoulder (4) and a second convex shoulder (6) which are sequentially connected with the pressure plate (2); the threaded post (5) is connected to the second shoulder (6).
4. A lockbolt as claimed in claim 3, wherein: the inner diameter of the plane annular groove (3) is larger than the outer diameter of the first shoulder (4), and the outer diameter of the plane annular groove (3) is smaller than the outer diameter of the pressure plate (2).
5. A lockbolt as claimed in claim 3, wherein: the first shoulder (4) and the second shoulder (6) have the same outer diameter and the surface roughness is less than Ra0.4.
6. A lockbolt as claimed in claim 3, wherein: the thread outside diameter of the thread post (5) is smaller than the outside diameter of the second shoulder (6).
7. A lockbolt as claimed in claim 1, wherein: the bolt head (1) is provided with one of a straight slot, a cross slot, an outer hexagonal slot and an inner hexagonal slot.
8. A lockbolt according to claim 7, wherein the radial through hole (10) extends through a side wall of the bolt head (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320243987.4U CN219795816U (en) | 2023-02-17 | 2023-02-17 | Anti-loose airtight bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320243987.4U CN219795816U (en) | 2023-02-17 | 2023-02-17 | Anti-loose airtight bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219795816U true CN219795816U (en) | 2023-10-03 |
Family
ID=88178171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320243987.4U Active CN219795816U (en) | 2023-02-17 | 2023-02-17 | Anti-loose airtight bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219795816U (en) |
-
2023
- 2023-02-17 CN CN202320243987.4U patent/CN219795816U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |