CN203728719U - Sealing device for fiber drawing furnace - Google Patents
Sealing device for fiber drawing furnace Download PDFInfo
- Publication number
- CN203728719U CN203728719U CN201420114184.XU CN201420114184U CN203728719U CN 203728719 U CN203728719 U CN 203728719U CN 201420114184 U CN201420114184 U CN 201420114184U CN 203728719 U CN203728719 U CN 203728719U
- Authority
- CN
- China
- Prior art keywords
- sealing
- drawing furnace
- vertical feed
- cylinder
- tightness system
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 70
- 238000012681 fiber drawing Methods 0.000 title abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 210000004907 gland Anatomy 0.000 claims description 19
- 238000005491 wire drawing Methods 0.000 claims description 19
- 238000002955 isolation Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/60—Optical fibre draw furnaces
- C03B2205/80—Means for sealing the preform entry or upper end of the furnace
Landscapes
- Tunnel Furnaces (AREA)
Abstract
The utility model relates to a sealing device for a fiber drawing furnace. The sealing device comprises a drawing furnace body and a heating cavity, and is characterized in that a perpendicular feeding table is arranged above a fire hole in the upper end of the heating cavity of the drawing furnace body, wherein one side of the perpendicular feeding table is connected with a perpendicular feeding driving device; the perpendicular feeding table is connected with an extension feeding rod which extends downwards; a preform connecting plate is arranged at the lower end of the extension feeding rod; a telescopic sealing cylinder is arranged on the periphery of the extension feeding rod, and is connected with a lifting mechanism arranged on the perpendicular feeding table; an inner hole of the telescopic sealing cylinder is sealed with the preform connecting plate. According to the sealing device, a fiber preform is totally sealed and covered by the telescopic sealing cylinder to isolate the heating cavity from outside air and ensure the stability of airflow in the drawing furnace during drawing, so that the drawing quality is ensured; the length of the sealing cylinder is effectively reduced, the spatial height occupied by the device is greatly reduced, and the device is compact in structure, reasonable in layout and convenient to use.
Description
Technical field
The utility model relates to a kind of tightness system of fibre drawing furnace.
Background technology
Optical fiber is by preform thermoplastic wire drawing is formed in fibre drawing furnace.In drawing process; in fiber drawing furnace, temperature reaches about 2000 DEG C, in order to protect the graphite heater material in fiber drawing furnace, need in fiber drawing furnace, keep rare gas element; conventionally pass into the mixed gas of argon gas and helium as shielding gas, need to control the outside air that flows into fiber drawing furnace simultaneously.Air enters into fiber drawing furnace when preventing preform drawing, need to tightness system be set at fiber drawing furnace upper end fire door, and the sealing property of tightness system is better, and outside air enters just fewer.
The conventional sealing means of drawing optical fibers furnace upper end fire door is to install quartz ring or carbon felt seal part at fire door at present, sealing member is between fire door and preform, due to preform in drawing process and fire door relative movement, and optical fiber prefabricating rod outside diameter is inhomogeneous, so will leave or produce certain running clearance between sealing member and preform, fire door can not seal completely.Cover on fire door with monoblock type jacket casing part, drawing process preform is rolled in jacket casing by envelope, although solved the problem of wire drawing fire door sealing, but take up room height, how long preform has in theory, and how long this bobbin will have, and the extension rod of feeding platform is also so long.This mode is difficult to the preform that prove-in length is grown.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiency that above-mentioned prior art exists a kind of fibre drawing furnace tightness system is provided, and it is good seal performance not only, and institute take up space low, the preform of can prove-in length growing.
The utility model for the technical scheme that the problem of the above-mentioned proposition of solution adopts is:
Include wire drawing body of heater and heating chamber, it is characterized in that being installed on a vertical feed platform above the fire door of the upper end, heating chamber of wire drawing body of heater, one side of vertical feed platform is connected with vertical feed drive unit, vertical feed platform is connected to the prolongation feed shaft of downward-extension with one, prefabricated rods terminal pad is installed in the lower end that extends feed shaft, be installed on sealing retracting cylinder in the periphery that extends feed shaft, sealing retracting cylinder is connected with the hoisting appliance that is installed in vertical feed platform, endoporus and the prefabricated rods terminal pad seal arrangement of sealing retracting cylinder.
Press such scheme, described sealing retracting cylinder comprises interior sealing bore and outer gland sealing cylinder, between inside and outside sealing bore, seal slide arrangement, the upper end of described outer gland sealing cylinder is connected with hoisting appliance, sealing member and heating upper end, chamber fire door phase configuration are installed in the lower end of outer gland sealing cylinder, the endoporus of described interior sealing bore and prefabricated rods terminal pad sealing slide arrangement.
Press such scheme, between interior sealing bore and outer gland sealing cylinder, be provided with one or several intermediate seal cylinder.
Press such scheme, described hoisting appliance is chain hoisting appliance, and chain hoisting appliance comprises rope or the chain that reel is connected with reel with one end.
Press such scheme, described rope or chain arrange 2 ~ 6, and circumferentially interval is connected with outer gland sealing cylinder upper end.
Press such scheme, on vertical feed platform, be installed on two-dimensional adjustment device, two-dimensional adjustment device is connected with the upper end that extends feed shaft, in order to extend the centering of feed shaft and fire door.
Press such scheme, described vertical feed drive unit comprises drive screw and polished rod, and drive screw is connected with the nut of vertical feed platform, and the sliding sleeve of polished rod and vertical feed platform socket-connects, for the guiding up and down of vertical feed platform.
Press such scheme, in heating upper end, chamber, rare gas element air blowing passage is set, form isolation compression ring.
Working process of the present utility model is: first vertical feed platform is risen to most significant digit, sealing retracting cylinder also rises to most significant digit and is contracted to the shortlyest, then starts installing optical fibres prefabricated rods, and prefabricated rods is connected with prefabricated rods terminal pad; Then enter and prepare the wire drawing stage, to seal retracting cylinder by hoisting appliance declines, making to seal retracting cylinder launches to stretch out, the lower end of outer gland sealing cylinder seals heating upper end, chamber fire door, prefabricated rods terminal pad enters endoporus and its seal arrangement of interior sealing bore, now the front end of preform enters heating chamber, can start wire drawing; In drawing process, prefabricated rods is with the slow feeding of decline of VTOL (vertical take off and landing) platform, and interior sealing bore declines thereupon, in the time that interior sealing bore front end reaches the lower end seam of outer gland sealing cylinder prefabricated rods terminal pad continue descending in endoporus, until wire drawing is complete.
The beneficial effects of the utility model are: 1, by arrange sealing retracting cylinder by whole preform sealing cover sealing retracting cylinder in, chamber and the outside air isolation of generating heat while making wire drawing, in heating upper end, chamber, rare gas element air blowing passage is set simultaneously, form isolation compression ring, further prevent that outside air from entering furnace chamber, ensure the stable of wire drawing gas stream in the stove, thereby ensure the quality of wire drawing, and solved the technical barrier that the very large preform of external diameter fluctuation is difficult to sealing; 2, not only can effectively avoid the oxidation of graphite heater material in fiber drawing furnace heating chamber with effectively completely cutting off of outside air, the acceptable life of raising equipment, and can effectively stop overflowing of the interior shielding gas of fiber drawing furnace, save the consumption of the shielding gas in fiber drawing furnace; 3, adopt sealing retracting cylinder can effectively shorten the length of sealing bore, greatly reduce the shared spatial altitude of equipment, make compact construction, arrange rationally, easy to use and operation, the Wire Drawing of the preform that applicable length is grown; 4, with sealing bore, prefabricated rods is all wrapped up, upper furnace mouth radiation energy reflection is out to prefabricated rods, play the effect to prefabricated rods preheating, be equivalent to prefabricated rods just preheated before entering fiber drawing furnace, not only energy-conservation but also be conducive to the further raising of wire drawing quality.
Brief description of the drawings
Fig. 1 is the structure iron of facing of an embodiment of the utility model.
Fig. 2 is the working state figure that embodiment of the utility model starts to enter the wire drawing stage.
Fig. 3 is the utility model working state figure in an embodiment wire drawing stage.
Fig. 4 is the utility model working state figure in an embodiment wire drawing ending stage.
Fig. 5 is the plan structure figure of an embodiment of the utility model.
Embodiment
Further illustrate embodiment of the present utility model below in conjunction with Figure of description.
Include wire drawing body of heater and heating chamber 12, above the fire door of the upper end, heating chamber of wire drawing body of heater, be installed on a vertical feed platform 3, one side of vertical feed platform is connected with vertical feed drive unit, described vertical feed drive unit comprises drive screw 1 and polished rod, the two ends of drive screw 1 and polished rod are connected with upper and lower supporting seat 14,13, drive screw is connected with the nut of vertical feed platform, and the sliding sleeve of polished rod and vertical feed platform socket-connects, for the guiding up and down of vertical feed platform.On vertical feed platform, be installed on two-dimensional adjustment device 4, two-dimensional adjustment device is connected with the upper end that extends feed shaft 6, in order to extend the centering of feed shaft and fire door, prefabricated rods terminal pad 7 is installed in the lower end that extends feed shaft, for clamping or weld the prolongation rod 8 of prefabricated rods 11; Be installed on sealing retracting cylinder in the periphery that extends feed shaft, described sealing retracting cylinder comprises interior sealing bore 9 and outer gland sealing cylinder 10, between inside and outside sealing bore, seal slide arrangement, and the upper and lower ends of outer gland sealing cylinder is provided with female end, the upper and lower ends of outer gland sealing cylinder is provided with male end, the upper end of described outer gland sealing cylinder is connected with hoisting appliance 2, described hoisting appliance is chain hoisting appliance, chain hoisting appliance comprises the chain 5 that reel is connected with reel with one end, described chain arranges 4, and circumferentially interval is connected with outer gland sealing cylinder upper end; Sealing member 16 and heating upper end, chamber fire door phase configuration are installed in the lower end of outer gland sealing cylinder, the periphery sealing slide arrangement of the endoporus of described interior sealing bore and prefabricated rods terminal pad 7, and form sealing gland 15.In addition, in heating upper end, chamber, rare gas element air blowing passage is set, forms isolation compression ring.
Claims (8)
1. the tightness system of a fibre drawing furnace, include wire drawing body of heater and heating chamber, it is characterized in that being installed on a vertical feed platform above the fire door of the upper end, heating chamber of wire drawing body of heater, one side of vertical feed platform is connected with vertical feed drive unit, vertical feed platform is connected to the prolongation feed shaft of downward-extension with one, prefabricated rods terminal pad is installed in the lower end that extends feed shaft, be installed on sealing retracting cylinder in the periphery that extends feed shaft, sealing retracting cylinder is connected with the hoisting appliance that is installed in vertical feed platform, endoporus and the prefabricated rods terminal pad seal arrangement of sealing retracting cylinder.
2. by the tightness system of fibre drawing furnace claimed in claim 1, it is characterized in that described sealing retracting cylinder comprises interior sealing bore and outer gland sealing cylinder, between inside and outside sealing bore, seal slide arrangement, the upper end of described outer gland sealing cylinder is connected with hoisting appliance, sealing member and heating upper end, chamber fire door phase configuration are installed in the lower end of outer gland sealing cylinder, the endoporus of described interior sealing bore and prefabricated rods terminal pad sealing slide arrangement.
3. by the tightness system of fibre drawing furnace claimed in claim 2, it is characterized in that being provided with one or several intermediate seal cylinder between interior sealing bore and outer gland sealing cylinder.
4. by the tightness system of the fibre drawing furnace described in claim 1 or 2, it is characterized in that described hoisting appliance is chain hoisting appliance, chain hoisting appliance comprises rope or the chain that reel is connected with reel with one end.
5. by the tightness system of fibre drawing furnace claimed in claim 4, it is characterized in that described rope or chain arrange 2 ~ 6, circumferentially interval is connected with outer gland sealing cylinder upper end.
6. by the tightness system of the fibre drawing furnace described in claim 1 or 2, it is characterized in that being installed on two-dimensional adjustment device on vertical feed platform, two-dimensional adjustment device is connected with the upper end that extends feed shaft, in order to extend the centering of feed shaft and fire door.
7. by the tightness system of the fibre drawing furnace described in claim 1 or 2, it is characterized in that described vertical feed drive unit comprises drive screw and polished rod, drive screw is connected with the nut of vertical feed platform, the sliding sleeve of polished rod and vertical feed platform socket-connects, for the guiding up and down of vertical feed platform.
8. by the tightness system of fibre drawing furnace claimed in claim 1, it is characterized in that, in heating upper end, chamber, rare gas element air blowing passage is set, form isolation compression ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420114184.XU CN203728719U (en) | 2014-03-14 | 2014-03-14 | Sealing device for fiber drawing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420114184.XU CN203728719U (en) | 2014-03-14 | 2014-03-14 | Sealing device for fiber drawing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203728719U true CN203728719U (en) | 2014-07-23 |
Family
ID=51198806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420114184.XU Expired - Lifetime CN203728719U (en) | 2014-03-14 | 2014-03-14 | Sealing device for fiber drawing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203728719U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000800A (en) * | 2015-08-18 | 2015-10-28 | 长飞光纤光缆股份有限公司 | Preform feeding device for optical fiber drawing tower |
| CN105150005A (en) * | 2015-08-18 | 2015-12-16 | 长飞光纤光缆股份有限公司 | Combined shaft system for vertical feeding mechanism |
| CN107235625A (en) * | 2017-05-05 | 2017-10-10 | 浙江联飞光纤光缆有限公司 | A kind of prefabricated rods attemperator for fibre drawing furnace |
| CN108383372A (en) * | 2016-03-31 | 2018-08-10 | 杭州富通通信技术股份有限公司 | The processing technology of optical fiber |
| CN110035980A (en) * | 2016-11-30 | 2019-07-19 | 住友电气工业株式会社 | The manufacturing method of the seal construction of optical fiber fiber drawing furnace, optical fiber |
| CN110885184A (en) * | 2019-10-25 | 2020-03-17 | 烽火通信科技股份有限公司 | Common-rail optical fiber drawing device and drawing method thereof |
| CN113165942A (en) * | 2018-11-21 | 2021-07-23 | 住友电气工业株式会社 | Sealing structure of optical fiber drawing furnace and method for manufacturing optical fiber |
| CN113277728A (en) * | 2021-07-01 | 2021-08-20 | 中国计量大学 | Optical fiber drawing furnace suitable for fluoride glass |
-
2014
- 2014-03-14 CN CN201420114184.XU patent/CN203728719U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000800A (en) * | 2015-08-18 | 2015-10-28 | 长飞光纤光缆股份有限公司 | Preform feeding device for optical fiber drawing tower |
| CN105150005A (en) * | 2015-08-18 | 2015-12-16 | 长飞光纤光缆股份有限公司 | Combined shaft system for vertical feeding mechanism |
| CN108383372A (en) * | 2016-03-31 | 2018-08-10 | 杭州富通通信技术股份有限公司 | The processing technology of optical fiber |
| CN108383372B (en) * | 2016-03-31 | 2020-08-21 | 杭州富通通信技术股份有限公司 | Optical fiber processing technology |
| CN110035980A (en) * | 2016-11-30 | 2019-07-19 | 住友电气工业株式会社 | The manufacturing method of the seal construction of optical fiber fiber drawing furnace, optical fiber |
| CN110035980B (en) * | 2016-11-30 | 2021-08-24 | 住友电气工业株式会社 | Sealing structure of optical fiber drawing furnace and method for manufacturing optical fiber |
| CN107235625A (en) * | 2017-05-05 | 2017-10-10 | 浙江联飞光纤光缆有限公司 | A kind of prefabricated rods attemperator for fibre drawing furnace |
| CN113165942A (en) * | 2018-11-21 | 2021-07-23 | 住友电气工业株式会社 | Sealing structure of optical fiber drawing furnace and method for manufacturing optical fiber |
| CN113165942B (en) * | 2018-11-21 | 2023-02-17 | 住友电气工业株式会社 | Sealing structure of optical fiber drawing furnace and method for manufacturing optical fiber |
| CN110885184A (en) * | 2019-10-25 | 2020-03-17 | 烽火通信科技股份有限公司 | Common-rail optical fiber drawing device and drawing method thereof |
| CN110885184B (en) * | 2019-10-25 | 2022-04-29 | 烽火通信科技股份有限公司 | Common-rail optical fiber drawing device and drawing method thereof |
| CN113277728A (en) * | 2021-07-01 | 2021-08-20 | 中国计量大学 | Optical fiber drawing furnace suitable for fluoride glass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170428 Address after: 433100 Qianjiang city of Hubei Province in Jianghan Salt Chemical Industrial Park Road No. 1 special YOFC Patentee after: YANGTZE OPTICAL FIBER QIANJIANG CO.,LTD. Address before: 430073 Hubei city of Wuhan province Wuchang two Guanshan Road No. four Patentee before: YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |