CN220300625U - Vacuum-pumping system of optical fiber drawing furnace - Google Patents
Vacuum-pumping system of optical fiber drawing furnace Download PDFInfo
- Publication number
- CN220300625U CN220300625U CN202322343916.4U CN202322343916U CN220300625U CN 220300625 U CN220300625 U CN 220300625U CN 202322343916 U CN202322343916 U CN 202322343916U CN 220300625 U CN220300625 U CN 220300625U
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- China
- Prior art keywords
- drawing furnace
- fiber drawing
- optical fiber
- vacuumizing
- connector
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- 238000012681 fiber drawing Methods 0.000 title claims abstract description 35
- 239000013307 optical fiber Substances 0.000 title claims abstract description 31
- 238000005086 pumping Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002184 metal Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000010964 304L stainless steel Substances 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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Abstract
The utility model discloses a vacuum-pumping system of an optical fiber drawing furnace, which comprises an optical fiber drawing furnace, wherein the upper part of the optical fiber drawing furnace is provided with an upper water plate, the lower part of the optical fiber drawing furnace is provided with an extension pipe, and the side edge of the extension pipe is provided with a vacuum-pumping interface; the cover plate is connected with and fixed on the upper water plate; the rubber plug is plugged at the pipe orifice of the extension pipe; and the vacuumizing mechanism is connected with the vacuumizing interface. According to the optical fiber drawing furnace vacuumizing system, the sealing device of the lower opening of the drawing furnace extension pipe is improved, and meanwhile, the position of the vacuumizing interface of the vacuumizing drawing furnace is adjusted, so that the vacuumizing effect of the drawing furnace is maintained, the vacuumizing operation requirement is simplified, and meanwhile, the risk of accessory damage caused by frequent disassembly and assembly is avoided.
Description
Technical Field
The utility model relates to the technical field of optical fiber production, in particular to a vacuum pumping system of an optical fiber drawing furnace.
Background
In the optical fiber drawing process, a graphite piece in a drawing furnace heats, a prefabricated rod is melted, according to the characteristic that the graphite piece is easy to reflect with oxygen at high temperature, the tightness of the drawing furnace needs to be verified through vacuumizing, and if the tightness of the drawing furnace is poor, oxygen can enter the drawing furnace to react with the graphite piece at high temperature. The existing vacuumizing system mainly covers the lower opening of the extension pipe of the wire drawing furnace through a bowl-shaped stainless steel device, the lower opening is fixed through a metal claw, and the lower opening is taken down after vacuumizing is finished. Firstly, the stainless steel device has large weight, the vacuum pumping needs to be forced against, and then the metal claw is installed at the same time, so that the stainless steel device is very inconvenient; in addition, the fittings on the device are easy to age and particularly the corrugated pipe is easy to break under frequent bending.
Disclosure of Invention
Based on the technical defects, the utility model provides the vacuumizing system of the optical fiber drawing furnace, and the sealing device of the lower opening of the extension pipe of the drawing furnace is improved, and meanwhile, the position of the vacuumizing interface of the vacuumizing drawing furnace is adjusted, so that the vacuumizing operation requirement is simplified, and the problems in the prior art are solved.
The utility model provides a vacuum-pumping system of an optical fiber drawing furnace, which comprises an optical fiber drawing furnace, wherein the upper part of the optical fiber drawing furnace is provided with an upper water plate, the lower part of the optical fiber drawing furnace is provided with an extension pipe, and the side edge of the extension pipe is provided with a vacuum-pumping interface; the cover plate is connected with and fixed on the upper water plate; the rubber plug is plugged at the pipe orifice of the extension pipe; and the vacuumizing mechanism is connected with the vacuumizing interface.
In an embodiment of the utility model, the vacuumizing mechanism comprises a three-way pipe, a first connecting head, a second connecting head and a third connecting head, wherein the first connecting head is connected to the vacuumizing interface; the exhaust valve is arranged on the second connector; and the vacuum pump is connected with the third connector.
In an embodiment of the utility model, the vacuum-pumping system of the optical fiber drawing furnace further includes a vacuum-pumping valve connected to the third connector.
In one embodiment of the utility model, the inner diameter of the cover plate is identical to the inner diameter of the upper water outlet plate.
In an embodiment of the present utility model, a groove is formed on the outer peripheral side of the cover plate, and a sealing ring is disposed in the groove.
In an embodiment of the utility model, the sealing ring exceeds the groove, and when the cover plate is covered and fixed on the upper water plate, the sealing ring is extruded to form a sealing structure.
In an embodiment of the present utility model, a limiting groove is also formed in the upper water plate, and when the cover plate is covered and fixed on the upper water plate, the sealing ring is located between the limiting groove and the groove.
In an embodiment of the utility model, the rubber plug is in a truncated cone shape.
In one embodiment of the present utility model, a protruding annular sealing portion is further formed on the outer periphery of the rubber stopper.
In an embodiment of the present utility model, an annular groove is formed on an inner wall of the extension pipe, and the annular sealing portion is sealed in the annular groove.
The beneficial effects are that:
according to the optical fiber drawing furnace vacuumizing system, the sealing device of the lower opening of the drawing furnace extension pipe is improved, the position of the vacuumizing interface of the vacuumizing drawing furnace is adjusted, the vacuumizing effect of the drawing furnace is maintained, the vacuumizing operation requirement is simplified, the risk of accessory damage caused by frequent disassembly and assembly is avoided, the vacuumizing operation difficulty is reduced, the accessory cost is reduced, and the production efficiency and profit are improved.
Drawings
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Fig. 1 is a schematic structural diagram of an evacuation system of an optical fiber drawing furnace according to an embodiment of the present utility model.
Fig. 2 is a schematic diagram of a structure of a cover plate with a sealing ring according to an embodiment of the utility model.
Wherein: 1 an optical fiber drawing furnace; 2, a cover plate; 3, a rubber plug; 4, a vacuumizing mechanism; 5, sealing rings; 11, a water feeding plate; 12 an extension tube; 31 an annular seal; a 41 three-way pipe; 42 an exhaust valve; 43, vacuumizing a valve; 44 vacuum pump.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is referred to in the embodiment of the present utility model, the directional indication is merely used to explain a relative positional relationship, a movement condition, and the like between the components in a specific posture (shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
As shown in fig. 1, the embodiment provides a vacuum-pumping system of an optical fiber drawing furnace, which comprises an optical fiber drawing furnace 1, a cover plate 2, a rubber plug 3 and a vacuum-pumping mechanism 4.
The optical fiber drawing furnace 1 is provided with an upper water outlet plate 11 at the upper part, an extension pipe 12 at the lower part, and a vacuumizing interface at the side.
As shown in fig. 2, the cover plate 2 is covered and fixed on the upper water outlet plate 11; the cover plate 24 is made of 304L stainless steel. The inner diameter of the cover plate 2 is consistent with the inner diameter of the upper water plate 11. The outer peripheral side of the cover plate 2 is provided with a groove (not shown), and a sealing ring 5 is arranged in the groove. The sealing ring 5 is a fluorine rubber ring, when the sealing ring 5 is installed in the groove, a part of the sealing ring exceeds the groove, and when the cover plate 2 is covered and fixed on the upper water plate 11, the sealing ring 5 can be extruded to form a sealing structure. The design is beneficial to sealing and ensures the vacuumizing effect.
Further, a limiting groove (not shown) is also formed in the upper water inlet plate 11, and when the cover plate 2 is covered and fixed on the upper water inlet plate 11, the sealing ring 5 is located between the limiting groove and the groove. This design can further prevent that apron 2 and sealing washer 5 from coming off because of inside and outside pressure differential, can not play sealed effect.
The rubber plug 3 is plugged at the pipe orifice of the extension pipe 12; the rubber plug 3 is in a truncated cone shape. The rubber stopper 3 is also formed at its outer periphery with a protruding annular seal 31. An annular groove is formed in the inner wall of the extension pipe 12, and the annular sealing portion 31 is sealed in the annular groove. This design can further prevent the rubber stopper 3 from falling off due to the internal and external pressure difference, and cannot achieve the sealing effect.
The vacuumizing mechanism 4 is connected to the vacuumizing interface. Specifically, the vacuum pumping mechanism 4 includes a three-way pipe 41, an exhaust valve 42, a vacuum pumping valve 43, and a vacuum pump 44, where the three-way pipe 41 has a first connector, a second connector, and a third connector, and the first connector is connected to the vacuum pumping port; the exhaust valve 42 is disposed on the second connector through a metal pipe; the vacuum valve 43 is connected to the third connector through a metal pipe, and the vacuum pump 44 is connected to the third connector through a metal pipe having the vacuum valve 43.
After the optical fiber drawing furnace 1 is disassembled and assembled, the cover plate 2 is placed on the upper water plate 11 of the drawing furnace, the rubber plug 3 is plugged into the lower opening of the extension pipe 12, the exhaust valve 42 is closed, the vacuumizing valve 43 is opened, and finally the vacuum pump 44 is opened to vacuumize. After the vacuumizing is finished, the vacuumizing valve 43 is closed, the exhaust valve 42 is opened, and after the pressure in the optical fiber drawing furnace 1 is restored to the atmospheric pressure, the rubber plug 3 and the cover plate 2 are removed, so that normal production operation can be performed.
After the system is adopted, the operation difficulty is greatly reduced, and the risk of damage to accessories caused by frequent disassembly and assembly is avoided, so that the utility model can reduce the vacuumizing operation difficulty, reduce the accessory cost and improve the production efficiency and profit.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It should be understood by those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the present utility model, and the present utility model is not limited to the above-described embodiments.
Claims (10)
1. The vacuum pumping system of the optical fiber drawing furnace is characterized by comprising
The upper part of the optical fiber drawing furnace is provided with an upper water outlet plate, the lower part of the optical fiber drawing furnace is provided with an extension pipe, and the side edge of the extension pipe is provided with a vacuumizing interface;
the cover plate is connected with and fixed on the upper water plate;
the rubber plug is plugged at the pipe orifice of the extension pipe;
and the vacuumizing mechanism is connected with the vacuumizing interface.
2. The optical fiber drawing furnace evacuation system of claim 1, wherein the evacuation mechanism comprises
The three-way pipe is provided with a first connector, a second connector and a third connector, and the first connector is connected to the vacuumizing interface;
the exhaust valve is arranged on the second connector;
and the vacuum pump is connected with the third connector.
3. The fiber drawing furnace evacuation system of claim 2, further comprising a vacuum evacuation valve connected to the third connection head.
4. The fiber drawing furnace evacuation system of claim 1, wherein an inner diameter of the cover plate is consistent with an inner diameter of the upper port water plate.
5. The vacuum pumping system of an optical fiber drawing furnace according to claim 1, wherein a groove is provided on the outer peripheral side of the cover plate, and a seal ring is provided in the groove.
6. The fiber drawing furnace evacuation system of claim 5, wherein the seal ring extends beyond the recess, the seal ring being compressed to form a seal when the cover plate is attached to and secured to the upper water plate.
7. The fiber drawing furnace evacuation system of claim 5, wherein a limiting groove is also formed in the upper water plate, and wherein the sealing ring is positioned between the limiting groove and the groove when the cover plate is covered and fixed on the upper water plate.
8. The fiber drawing furnace evacuation system of claim 1, wherein the rubber plug is frustoconical.
9. The optical fiber drawing furnace evacuation system of claim 8, wherein the rubber plug is further formed with a raised annular seal on the outer periphery thereof.
10. The optical fiber drawing furnace evacuation system of claim 9, wherein an annular groove is formed in an inner wall of the extension tube, the annular seal being sealed within the annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322343916.4U CN220300625U (en) | 2023-08-30 | 2023-08-30 | Vacuum-pumping system of optical fiber drawing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322343916.4U CN220300625U (en) | 2023-08-30 | 2023-08-30 | Vacuum-pumping system of optical fiber drawing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220300625U true CN220300625U (en) | 2024-01-05 |
Family
ID=89374976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322343916.4U Active CN220300625U (en) | 2023-08-30 | 2023-08-30 | Vacuum-pumping system of optical fiber drawing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220300625U (en) |
-
2023
- 2023-08-30 CN CN202322343916.4U patent/CN220300625U/en active Active
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