CN220437665U - Sealing device for air tightness detection - Google Patents
Sealing device for air tightness detection Download PDFInfo
- Publication number
- CN220437665U CN220437665U CN202322046296.8U CN202322046296U CN220437665U CN 220437665 U CN220437665 U CN 220437665U CN 202322046296 U CN202322046296 U CN 202322046296U CN 220437665 U CN220437665 U CN 220437665U
- Authority
- CN
- China
- Prior art keywords
- bearing
- tightening sleeve
- wall
- thrust ball
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 210000004907 gland Anatomy 0.000 claims abstract description 26
- 239000007769 metal material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Abstract
The utility model discloses an air tightness detection sealing device, which comprises a screwing sleeve, a bearing gland, a thrust ball bearing, a compacting plate and a rubber sealing gasket, wherein the screwing sleeve is sleeved on the bearing gland; the tightening sleeve is of a cylindrical structure, a threaded section is processed at the lower end of the inner wall of the tightening sleeve, and a supporting section with the diameter larger than that of the threaded section is arranged at the upper end of the inner wall of the tightening sleeve; the upper end of the bearing gland is a circular plate, and a bearing positioning ring is processed in the center of the lower plate surface of the circular plate; the rubber sealing gasket and the compacting plate are sequentially arranged on a step surface where the thread section of the inner wall of the tightening sleeve is connected with the supporting section; the thrust ball bearing is sleeved on the bearing positioning ring of the bearing gland; and a circular plate at the upper end of the bearing gland is welded and fixed at the upper port part of the tightening sleeve, and the lower end of the thrust ball bearing is tightly pressed against the pressing plate. The tightness detection sealing device can be used for reliably sealing the external threads at the end part of the metal shell part.
Description
Technical Field
The utility model relates to an air tightness detection sealing device, and belongs to the technical field of air tightness detection.
Background
After the processing of metal shell parts such as a bullet tail and an engine is finished, the air tightness detection is carried out, and when the detection is carried out, the end part of the metal shell part is required to be packaged by a sealing cover and a rubber sealing gasket. Because the mouth part of the product blanking cover is of a threaded structure, the airtight detection sealing cover is also processed into threads matched with the blanking cover, and a sealing rubber gasket is arranged on the contact end face of the airtight detection sealing cover and the product blanking cover, so that the installation and the screwing are convenient, and the end face sealing after the screwing is realized. However, in the process of tightening the airtight detection sealing cover, the sealing rubber gasket can rotate along with the rotation of the sealing cover, and especially after the sealing cover, the sealing rubber gasket and the end face of the product plugging cover are in contact, the sealing rubber gasket is wrinkled along with pressure and torsion, so that the sealing is invalid.
Disclosure of Invention
The utility model aims to solve the problem that a rubber sealing gasket is wrinkled along with pressure and torsion in the tightening process of a traditional airtight detection sealing cover, so that the sealing is invalid, and provides an airtight detection sealing device.
The utility model aims at realizing the following technical scheme:
the utility model relates to an air tightness detection sealing device which comprises a screwing sleeve, a bearing gland, a thrust ball bearing, a pressing plate and a rubber sealing gasket, wherein the screwing sleeve is sleeved on the pressing plate;
the tightening sleeve is of a cylindrical structure, a thread section matched with the end part of a product to be detected is processed at the lower end of the inner wall of the tightening sleeve, and a supporting section with the diameter larger than that of the thread section is arranged at the upper end of the inner wall of the tightening sleeve;
the upper end of the bearing gland is a circular plate with the diameter matched with the diameter of the supporting section of the inner wall of the tightening sleeve, and a bearing positioning ring is processed in the center of the lower plate surface of the circular plate;
the inner diameter of the upper ring of the thrust ball bearing is matched with the outer diameter of the bearing gland bearing positioning ring, the inner diameter of the lower ring of the thrust ball bearing is smaller than the outer diameter of the bearing gland bearing positioning ring, and the outer diameter of the thrust ball bearing is smaller than the diameter of the inner wall supporting section of the tightening sleeve;
the diameters of the pressing plate and the rubber sealing gasket are matched with the diameter of the supporting section of the inner wall of the tightening sleeve;
the rubber sealing gasket and the compacting plate are sequentially arranged on a step surface where the thread section of the inner wall of the tightening sleeve is connected with the supporting section; the thrust ball bearing is sleeved on the bearing positioning ring of the bearing gland, and the upper end of the inner ring of the thrust ball bearing is clamped with the outer wall of the bearing positioning ring of the bearing gland; and a circular plate at the upper end of the bearing gland is welded and fixed at the upper port part of the tightening sleeve, and the lower end of the thrust ball bearing is tightly pressed against the pressing plate.
In order to facilitate the rotation of the airtight detection sealing device, a wrench groove is formed in the side wall of the tightening sleeve.
The compacting plates are made of metal materials.
Working process
When the air tightness detection sealing device is in threaded butt joint with the end part of a product to be detected, along with the screwing-in of the threaded sections of the two, the lower end face of the rubber sealing gasket is in contact with the end part of the product to be detected first, after the air tightness detection sealing device is screwed in continuously, the screwing-in sleeve drives the upper ring of the thrust ball bearing to rotate continuously and transmit pressure downwards axially to squeeze the rubber sealing gasket, the lower ring of the thrust ball bearing, the compacting plate and the rubber sealing gasket do not rotate, so that the rubber sealing gasket does not generate wrinkles in the screwing-in process of the air tightness detection sealing device, and the sealing effect of the product is ensured.
Advantageous effects
The airtight detection sealing device is simple in structure and convenient to operate, can be used for reliably sealing the external threads at the end part of the metal shell part, and ensures that the airtight detection of a product is smoothly carried out.
Drawings
FIG. 1 is a schematic view of a seal device for detecting air tightness according to the present utility model;
FIG. 2 is a schematic view showing an assembled state of the airtight detecting and sealing device of the present utility model;
in the figure, a sleeve is screwed 1-, a bearing cover is 2-, a thrust ball bearing is 3-, a pressing plate is 4-, a rubber gasket is 5-and a product to be detected is 6-.
Detailed Description
The present utility model will be further described with reference to the drawings and examples.
Examples
As shown in fig. 1, the air tightness detection sealing device of the present utility model comprises a tightening sleeve 1, a bearing gland 2, a thrust ball bearing 3, a compacting plate 4 and a rubber gasket 5;
the tightening sleeve 1 is of a cylindrical structure, a threaded section matched with the end part of a product 6 to be detected is processed at the lower end of the inner wall of the tightening sleeve 1, a supporting section with the diameter larger than that of the threaded section is arranged at the upper end of the inner wall of the tightening sleeve 1, and a wrench groove is formed in the side wall of the tightening sleeve 1;
the upper end of the bearing gland 2 is a circular plate with the diameter matched with the diameter of the supporting section of the inner wall of the tightening sleeve 1, and a bearing positioning ring is processed in the center of the lower plate surface of the circular plate;
the inner diameter of the upper ring of the thrust ball bearing 3 is matched with the outer diameter of the bearing positioning ring of the bearing gland 2, the inner diameter of the lower ring of the thrust ball bearing 3 is smaller than the outer diameter of the bearing positioning ring of the bearing gland 2, and the outer diameter of the thrust ball bearing 3 is smaller than the diameter of the inner wall supporting section of the tightening sleeve 1;
the diameters of the compacting plates 4 and the rubber gaskets 5 are matched with the diameter of the inner wall supporting section of the tightening sleeve 1; the compaction plate is made of a metal material;
the rubber sealing gasket 5 and the compacting plate 4 are sequentially arranged on a step surface where the thread section of the inner wall of the screwing sleeve 1 is connected with the supporting section; the thrust ball bearing 3 is sleeved on a bearing positioning ring of the bearing gland 2, and the upper end of the inner ring of the thrust ball bearing 3 is clamped with the outer wall of the bearing positioning ring of the bearing gland 2; the circular plate at the upper end of the bearing gland 2 is welded and fixed at the upper port part of the tightening sleeve 1, and the lower end of the thrust ball bearing 3 is tightly pressed against the pressing plate 4.
When the airtight detection sealing device is in threaded butt joint with the end part of the product 6 to be detected, as shown in fig. 2, along with the screwing-in of the thread sections of the two, the lower end surface of the rubber sealing pad 5 is in contact with the end part of the product 6 to be detected first, after the airtight detection sealing device is continuously screwed in, the tightening sleeve 1 drives the upper ring of the thrust ball bearing 3 to continuously rotate and axially downwards transmits pressure to squeeze the rubber sealing pad 5, and the lower ring of the thrust ball bearing 3, the compacting plate 4 and the rubber sealing pad 5 do not rotate, so that the rubber sealing pad 5 does not generate folds in the screwing-in process of the airtight detection sealing device, and the sealing effect of the product is ensured.
Claims (3)
1. The utility model provides a gas tightness detects sealing device which characterized in that: comprises a screwing sleeve, a bearing gland, a thrust ball bearing, a compacting plate and a rubber sealing gasket;
the tightening sleeve is of a cylindrical structure, a thread section matched with the end part of a product to be detected is processed at the lower end of the inner wall of the tightening sleeve, and a supporting section with the diameter larger than that of the thread section is arranged at the upper end of the inner wall of the tightening sleeve;
the upper end of the bearing gland is a circular plate with the diameter matched with the diameter of the supporting section of the inner wall of the tightening sleeve, and a bearing positioning ring is processed in the center of the lower plate surface of the circular plate;
the inner diameter of the upper ring of the thrust ball bearing is matched with the outer diameter of the bearing gland bearing positioning ring, the inner diameter of the lower ring of the thrust ball bearing is smaller than the outer diameter of the bearing gland bearing positioning ring, and the outer diameter of the thrust ball bearing is smaller than the diameter of the inner wall supporting section of the tightening sleeve;
the diameters of the pressing plate and the rubber sealing gasket are matched with the diameter of the supporting section of the inner wall of the tightening sleeve;
the rubber sealing gasket and the compacting plate are sequentially arranged on a step surface where the thread section of the inner wall of the tightening sleeve is connected with the supporting section; the thrust ball bearing is sleeved on the bearing positioning ring of the bearing gland, and the upper end of the inner ring of the thrust ball bearing is clamped with the outer wall of the bearing positioning ring of the bearing gland; and a circular plate at the upper end of the bearing gland is welded and fixed at the upper port part of the tightening sleeve, and the lower end of the thrust ball bearing is tightly pressed against the pressing plate.
2. The airtight detecting and sealing device according to claim 1, wherein: the side wall of the tightening sleeve is provided with a wrench groove.
3. A gas tightness detection sealing device according to claim 1 or 2, characterized in that: the compacting plates are made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322046296.8U CN220437665U (en) | 2023-08-01 | 2023-08-01 | Sealing device for air tightness detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322046296.8U CN220437665U (en) | 2023-08-01 | 2023-08-01 | Sealing device for air tightness detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220437665U true CN220437665U (en) | 2024-02-02 |
Family
ID=89703643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322046296.8U Active CN220437665U (en) | 2023-08-01 | 2023-08-01 | Sealing device for air tightness detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220437665U (en) |
-
2023
- 2023-08-01 CN CN202322046296.8U patent/CN220437665U/en active Active
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