CN215444706U - Double-seal bolt structure - Google Patents
Double-seal bolt structure Download PDFInfo
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- CN215444706U CN215444706U CN202122229753.8U CN202122229753U CN215444706U CN 215444706 U CN215444706 U CN 215444706U CN 202122229753 U CN202122229753 U CN 202122229753U CN 215444706 U CN215444706 U CN 215444706U
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Abstract
The utility model relates to a double-seal bolt structure, wherein the lower part of a bolt body is a cylinder, the upper part of the bolt body is a bolt head, the outer ring of the bolt head is a circular ring provided with external threads, the inner side of the bolt head is provided with an inner hexagonal groove, the inner side of the bottom of the bolt head is provided with a first seal groove, and the first seal groove is circular; the outer bolt head is in a circular ring shape, an inner thread is arranged in the hollow part of the inner side of the outer bolt head and matched with the outer thread, a second sealing groove is arranged on the inner side of the bottom of the outer bolt head and is in a circular ring shape, and the outer side of the outer bolt head is in a hexagon shape; the first sealing groove is matched with the first sealing ring, the second sealing groove is matched with the second sealing ring, threads on the lower portion of the bolt body are matched with the nut, and the lower portion of the bolt body penetrates through the first component and the second component. The utility model has double-layer sealing, economy and practicality and good sealing effect.
Description
Technical Field
The utility model relates to the technical field of sealing, in particular to a double-sealing bolt structure which is double-layer sealed, economical and practical and good in sealing effect.
Background
The mechanical seal (mechanical seal) is a device for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in contact and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the matching of an auxiliary seal. The elastic loading mechanism and the auxiliary seal are mechanical seals of metal corrugated pipes, which are called metal corrugated pipe seals. In light sealing, a rubber corrugated pipe is used as auxiliary sealing, the elasticity of the rubber corrugated pipe is limited, and a spring is generally required to be supplemented to meet the loading elasticity. "mechanical seal" is often referred to by one as "mechanical seal" for short.
The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world. The mechanical seal is called a face seal, and is defined in the relevant national standard as a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to a rotating axis, keeping fit and relatively sliding under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal. "
The bolt is a mechanical part and is a cylindrical threaded fastener matched with a nut. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection.
In the prior art, the sealing mode is various, and for the occasion with high requirement on air tightness, a double-sealing bolt structure with double-layer sealing, economy, practicability and good sealing effect is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-sealing bolt structure which is double-layer sealed, economical and practical and has a good sealing effect.
A double seal bolt structure comprising:
the bolt comprises a bolt body, wherein the lower part of the bolt body is a cylinder, the upper part of the bolt body is a bolt head, the outer ring of the bolt head is a circular ring provided with external threads, the inner side of the bolt head is provided with an inner hexagonal groove, the inner side of the bottom of the bolt head is provided with a first sealing groove, and the first sealing groove is in a circular ring shape;
the outer bolt head is in a circular ring shape, an inner thread is arranged in the hollow part of the inner side of the outer bolt head and matched with the outer thread, a second sealing groove is arranged on the inner side of the bottom of the outer bolt head and is in a circular ring shape, and the outer side of the outer bolt head is in a hexagon shape;
the first sealing groove is matched with the first sealing ring, the second sealing groove is matched with the second sealing ring, threads of the lower portion of the bolt body are matched with the nut, and the lower portion of the bolt body penetrates through the first part and the second part.
The bolt body is T-shaped, the lower portion of the bolt body is perpendicular to the bolt head, and the lower portion of the bolt body is located in the center of the bolt head.
The height of the bolt head is equal to the height of the outer bolt head.
The sections of the first sealing groove and the second sealing groove are respectively rectangular.
The inner hexagonal groove is in an equilateral hexagon shape, and the outer side of the outer bolt head is in an equilateral hexagon shape.
The lower part of a bolt body is a cylinder, the upper part of the bolt body is a bolt head, the outer ring of the bolt head is a circular ring provided with external threads, the inner side of the bolt head is provided with an inner hexagonal groove, the inner side of the bottom of the bolt head is provided with a first sealing groove, and the first sealing groove is circular; the outer bolt head is in a circular ring shape, an inner thread is arranged in the hollow part of the inner side of the outer bolt head and matched with the outer thread, a second sealing groove is arranged on the inner side of the bottom of the outer bolt head and is in a circular ring shape, and the outer side of the outer bolt head is in a hexagon shape; the first sealing groove is matched with the first sealing ring, the second sealing groove is matched with the second sealing ring, threads on the lower portion of the bolt body are matched with the nut, and the lower portion of the bolt body penetrates through the first component and the second component. The utility model has double-layer sealing, economy and practicality and good sealing effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic front view of the bolt body of the present invention;
FIG. 3 is a schematic top view of the bolt body of the present invention;
fig. 4 is a front view of the outer bolt head of the present invention;
fig. 5 is a schematic top view of an outer bolt head of the present invention;
in the figure: 1. the bolt comprises a bolt body, 2, a bolt head, 3, an external thread, 4, an internal hexagonal groove, 5, a first sealing groove, 6, an external bolt head, 7, an internal thread, 8, a second sealing groove, 9, a first sealing ring, 10, a second sealing ring, 11, a nut, 12, a first component, 13 and a second component.
Detailed Description
The utility model is further described below with reference to the following figures and specific examples.
A double seal bolt structure comprising: the bolt comprises a bolt body 1, wherein the lower part of the bolt body 1 is a cylinder, the upper part of the bolt body 1 is a bolt head 2, the outer ring of the bolt head 2 is a circular ring provided with external threads 3, the inner side of the circular ring is provided with an inner hexagonal groove 4, the inner side of the bottom of the bolt head 2 is provided with a first sealing groove 5, and the first sealing groove 5 is circular; the outer bolt head 6 is circular, an inner thread 7 is arranged in the hollow part of the inner side of the outer bolt head 6, the inner thread 7 is matched with the outer thread 3, a second sealing groove 8 is arranged on the inner side of the bottom of the outer bolt head 6, the second sealing groove 8 is circular, and the outer side of the outer bolt head 6 is hexagonal; the first seal groove 5 is matched with the first seal ring 9, the second seal groove 8 is matched with the second seal ring 10, threads of the lower portion of the bolt body 1 are matched with the nut 11, and the lower portion of the bolt body 1 penetrates through the first component 12 and the second component 13.
The bolt body 1 is T-shaped, the lower part of the bolt body 1 is vertical to the bolt head 2, and the lower part of the bolt body 1 is positioned in the center of the bolt head 2. The height of the bolt head 2 is equal to the height of the outer bolt head 6. The sections of the first sealing groove 5 and the second sealing groove 8 are respectively rectangular. The inner hexagonal groove 4 is an equilateral hexagon, and the outer side of the outer bolt head 6 is an equilateral hexagon.
The first and second parts 12, 13 are non-metallic pieces that are not suitable for riveting or welding, while still providing a secure connection therebetween and are intended to be disassembled when required.
In use, the first member 12 and the second member 13 are fixed, and the lower portion of the bolt body 1 is inserted through the first member 12 and the second member 13. The bolt head 2 rotates through the inner hexagonal groove 4, namely the hexagonal wrench rotates, the lower part of the bolt body 1 is matched and fixed with the nut 11 tightly, and the bolt body 1 is tightened. When the bolt body 1 is tightened, the first sealing groove 5 of the bolt head 2 presses the first sealing ring 9, and the contact position of the first component 12 and the bolt body 1 is sealed for the first time. After the bolt head 2 is tightened, the external thread 3 of the bolt head 2 is matched with the internal thread 7 of the external bolt head 6, the external bolt head 6 is tightened to be attached to the first component 12 by using a wrench, and when the bolt head is tightened, the second sealing groove 8 compresses the second sealing ring 10 to perform second sealing.
The bolt body 1 is T-shaped, the lower part of the bolt body 1 is perpendicular to the bolt head 2, the lower part of the bolt body 1 is positioned in the center of the bolt head 2, and the bolt is symmetrical in structure, uniform in stress and convenient to seal. The height of the bolt head 2 is equal to that of the outer bolt head 6, and no bulge exists after tightening, so that safety is guaranteed, and collision damage and injury are prevented. The sections of the first sealing groove 5 and the second sealing groove 8 are respectively rectangular, so that sealing is convenient. The inner hexagonal groove 4 is in an equilateral hexagon shape, and the outer side of the outer bolt head 6 is in an equilateral hexagon shape, so that the disassembly is convenient.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. A double seal bolt structure, comprising:
the bolt comprises a bolt body (1), wherein the lower part of the bolt body (1) is a cylinder, the upper part of the bolt body is a bolt head (2), the outer ring of the bolt head (2) is a circular ring provided with external threads (3), the inner side of the bolt head is provided with an inner hexagonal groove (4), the inner side of the bottom of the bolt head (2) is provided with a first sealing groove (5), and the first sealing groove (5) is circular;
the bolt head comprises an outer bolt head (6), wherein the outer bolt head (6) is in a circular ring shape, an inner thread (7) is arranged in the hollow part of the inner side of the outer bolt head, the inner thread (7) is matched with the outer thread (3), a second sealing groove (8) is arranged on the inner side of the bottom of the outer bolt head (6), the second sealing groove (8) is in a circular ring shape, and the outer side of the outer bolt head (6) is in a hexagon shape;
the first sealing groove (5) is matched with the first sealing ring (9), the second sealing groove (8) is matched with the second sealing ring (10), threads of the lower portion of the bolt body (1) are matched with the nut (11), and the lower portion of the bolt body (1) penetrates through the first part (12) and the second part (13).
2. The dual sealing bolt structure according to claim 1, wherein the bolt body (1) is T-shaped, the lower portion of the bolt body (1) and the bolt head (2) are perpendicular to each other, and the lower portion of the bolt body (1) is located at the center of the bolt head (2).
3. Double sealing bolt structure according to claim 1, characterized in that the height of the bolt head (2) is equal to the height of the outer bolt head (6).
4. The dual seal bolt structure according to claim 1, wherein the first seal groove (5) and the second seal groove (8) are respectively rectangular in cross section.
5. Double sealing bolt structure according to claim 1, characterized in that the inner hexagonal socket (4) is an equilateral hexagon and the outer side of the outer bolt head (6) is an equilateral hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122229753.8U CN215444706U (en) | 2021-09-15 | 2021-09-15 | Double-seal bolt structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122229753.8U CN215444706U (en) | 2021-09-15 | 2021-09-15 | Double-seal bolt structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215444706U true CN215444706U (en) | 2022-01-07 |
Family
ID=79699942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122229753.8U Active CN215444706U (en) | 2021-09-15 | 2021-09-15 | Double-seal bolt structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215444706U (en) |
-
2021
- 2021-09-15 CN CN202122229753.8U patent/CN215444706U/en active Active
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