CN210053184U - Explosion-proof cable lead-in device - Google Patents
Explosion-proof cable lead-in device Download PDFInfo
- Publication number
- CN210053184U CN210053184U CN201920763991.7U CN201920763991U CN210053184U CN 210053184 U CN210053184 U CN 210053184U CN 201920763991 U CN201920763991 U CN 201920763991U CN 210053184 U CN210053184 U CN 210053184U
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- rubber circle
- lead tube
- gland nut
- explosion
- lead
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Abstract
The utility model relates to the technical field of cables, especially, relate to an explosion-proof cable introducing device, including gland nut and lead tube, the one end of lead tube is provided with internal thread and gland nut one end and inserts in the lead tube and with internal thread threaded connection, first rubber circle, second rubber circle and metal packing ring have set gradually between the middle part of lead tube inner wall and the gland nut, the inside annular chamber that is provided with of second rubber circle, the inside packing of annular chamber has inert gas, and when this device used, through gland nut extrusion metal packing ring, metal packing ring extrudees second rubber circle for the inside pressure grow of annular chamber, the second rubber circle takes place the inflation, makes second rubber circle extrusion on the outer wall of cable, and is sealed effectual, and the soft cable that is difficult to crush of second rubber circle texture.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to explosion-proof cable introducing device.
Background
The existing explosion-proof cable leading-in device is unreasonable in structural design, comprises a leading-in device body, a common cylindrical sealing ring and a compression nut, and particularly has certain limitation when the common cylindrical sealing ring in the leading-in device body clamps a cable, the clamping range is small, the cable is easy to damage when the cable is clamped, and the phenomenon of cable deformation is generated. Therefore, it is highly desirable to develop a new explosion-proof cable introduction device by those skilled in the art.
Disclosure of Invention
The utility model aims at solving the defects existing in the prior art and providing an explosion-proof cable leading-in device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
explosion-proof cable introducing device, including gland nut and lead tube, the one end of lead tube is provided with internal thread and gland nut's one end and inserts in the lead tube and with internal thread threaded connection, has set gradually first rubber circle, second rubber circle and metal packing ring between the middle part of lead tube inner wall and the gland nut, the inside annular chamber that is provided with of second rubber circle, the inside packing of annular chamber has inert gas.
Preferably, an annular groove is formed in the inner wall of the lead pipe, an annular convex block is arranged at one end of the first rubber ring, and the annular convex block is inserted into the annular groove.
Preferably, one end of the lead tube body, which is close to the compression nut, is provided with a limiting block which is uniformly distributed, one end of the compression nut, which is far away from the lead tube, is provided with an annular stop block, and the annular stop block is matched with the limiting block.
Preferably, the first rubber ring and the second rubber ring are connected in an adhesive manner.
The utility model has the advantages that:
1. when the device is used, the metal washer is extruded through the compression nut, and the metal washer extrudes the second rubber ring, so that the internal pressure of the annular cavity becomes large, the second rubber ring expands, the second rubber ring is extruded on the outer wall of the cable, the sealing effect is good, and the cable is not easily crushed due to the soft texture of the second rubber ring.
2. When the device is used, the distance between the lead pipe and the compression nut can be prevented from being too short through the limiting block, the second rubber ring is prevented from being excessively extruded and broken, and the device can be used normally.
Drawings
Fig. 1 is a schematic sectional view of an explosion-proof cable lead-in device according to the present invention;
fig. 2 is a schematic side view of the lead tube of the explosion-proof cable introducing device according to the present invention.
In the figure: 1 lead tube, 2 gland nut, 3 first rubber circle, 4 second rubber circles, 5 metal packing rings, 6 stopper, 7 annular chambeies.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, the explosion-proof cable leading-in device comprises a compression nut 2 and a lead tube 1, wherein one end of the lead tube 1 is provided with an internal thread, one end of the compression nut 2 is inserted into the lead tube 1 and is in threaded connection with the internal thread, a first rubber ring 3, a second rubber ring 4 and a metal gasket 5 are sequentially arranged between the middle part of the inner wall of the lead tube 1 and the compression nut 2, an annular cavity 7 is arranged inside the second rubber ring 4, and inert gas such as nitrogen is filled inside the annular cavity 7.
Further, be provided with the annular groove on the inner wall of lead wire pipe 1, the one end of first rubber circle 3 is provided with annular convex block, and annular convex block inserts the inside of establishing at the annular groove for first rubber circle 3 is difficult to drop.
Further, the one end that is close to gland nut 2 on the body of lead tube 1 is provided with evenly distributed's stopper 6, and the one end that gland nut 2 kept away from lead tube 1 is provided with annular dog, annular dog and stopper 6 looks adaptation.
Further, the first rubber ring 3 and the second rubber ring 4 are connected in a gluing mode.
In this embodiment, during the use of this device, through gland nut 2 extrusion metal washer 5, metal washer 5 extrudees second rubber circle 4 for 7 internal pressure enlargements of annular chamber, the inflation takes place for second rubber circle 4 extrudees on the outer wall of cable, and is sealed effectual, and 4 soft not easy crushing cables of second rubber circle texture.
When this device uses, can avoid through stopper 6 that the distance is too near between lead tube 1 and gland nut 2, avoid second rubber circle 4 to receive excessive extrusion and take place to break, guarantee the use that the device can be normal.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. Explosion-proof cable introducing device, including gland nut (2) and lead tube (1), the one end of lead tube (1) is provided with the one end of internal thread and gland nut (2) and inserts in lead tube (1) and with internal thread threaded connection, its characterized in that, first rubber circle (3), second rubber circle (4) and metal packing ring (5) have set gradually between the middle part of lead tube (1) inner wall and gland nut (2), inside annular chamber (7) that is provided with of second rubber circle (4), inside packing of annular chamber (7) has inert gas.
2. An explosion-proof cable lead-in device according to claim 1, wherein an annular groove is provided on the inner wall of the lead tube (1), and an annular projection is provided at one end of the first rubber ring (3) and inserted inside the annular groove.
3. The explosion-proof cable leading-in device according to claim 1, wherein the end of the lead tube (1) close to the gland nut (2) is provided with evenly distributed limiting blocks (6), and the end of the gland nut (2) far away from the lead tube (1) is provided with an annular stop block which is matched with the limiting blocks (6).
4. An explosion-proof cable lead-in device according to claim 1, characterized in that the first rubber ring (3) and the second rubber ring (4) are glued.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920763991.7U CN210053184U (en) | 2019-05-26 | 2019-05-26 | Explosion-proof cable lead-in device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920763991.7U CN210053184U (en) | 2019-05-26 | 2019-05-26 | Explosion-proof cable lead-in device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210053184U true CN210053184U (en) | 2020-02-11 |
Family
ID=69395644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920763991.7U Active CN210053184U (en) | 2019-05-26 | 2019-05-26 | Explosion-proof cable lead-in device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210053184U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178838A (en) * | 2021-05-08 | 2021-07-27 | 哈尔滨电机厂有限责任公司 | Water wheel generator case sleeve type full-insulation isolation protection device |
-
2019
- 2019-05-26 CN CN201920763991.7U patent/CN210053184U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178838A (en) * | 2021-05-08 | 2021-07-27 | 哈尔滨电机厂有限责任公司 | Water wheel generator case sleeve type full-insulation isolation protection device |
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