CN207276494U - One kind extension stove lower sealing device - Google Patents
One kind extension stove lower sealing device Download PDFInfo
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- CN207276494U CN207276494U CN201721135247.XU CN201721135247U CN207276494U CN 207276494 U CN207276494 U CN 207276494U CN 201721135247 U CN201721135247 U CN 201721135247U CN 207276494 U CN207276494 U CN 207276494U
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Abstract
The utility model provides a kind of extension stove lower sealing device, it is characterised in that：Include successively from top to bottom：Graphite cavity plate I, graphite cavity plate II, overhead gage, graphite cavity plate III, graphite cavity plate IV, lower baffle plate, graphite cavity plate V, graphite cavity plate VI；There is toroidal cavity structure between the graphite cavity plate I and graphite cavity plate II, graphite cavity plate III and graphite cavity plate IV, graphite cavity plate V and graphite cavity plate VI, form air flue；The overhead gage, lower baffle plate form guard seal；The extension stove sealing device and furnace body slitless connection.The utility model extension stove lower sealing device can realize the smooth smoothly extension of the preform of different-diameter scope with preventing furnace body from aoxidizing.
Description
Technical field
The utility model belongs to fiber manufacturing installation technical field, more particularly relates to a kind of extension stove lower sealing device.
Background technology
The process of fiber manufacturing is that quartzy prefabricated rods are put into melting furnace to be heated to quartzy softening, is pulled out carefully from furnace bottom
Quartz fibre, that is, optical fiber, melting furnace is using heating graphite element, it is necessary to toward being passed through the mixed of argon gas or argon gas and nitrogen in stove
Gas is closed as protection gas, is usually argon gas protection gas, in such stove the flowing of argon gas the optical fiber drawn under stove can be caused very
It is big to influence, the diameter of optical fiber is particularly, so Most current fiber manufacturing factory selects the quartzy prefabricated stick drawn wire of uniform diameter.
With the aggravation of industry competition, each optical fiber factory seek with undressed diameter deviation increase prefabricated rods it is straight
Connecing wire drawing, the advantages of hair rod wire drawing is the post processing costs such as the extension, polishing, pickling of reduction optical wand that can be larger, but because
Hair rod outside diameter deviation is big, and very big challenge is proposed to drawing process, and main problem is that optical fiber string diameter fluctuates big problem, technological difficulties
Be how to ensure that the sealing gland of the stove in prefabricated rod outside diameter excursion is good, the current hair rod wire drawing prior art mainly emphatically from
Two aspects solve technological difficulties：Extend stove furnace roof and place sealing device and extension stove furnace bottom placement sealing device, for furnace roof
The technical solution of air seal set, currently available technology are mainly that furnace roof places long tube scheme, silica wool scheme, complicated cylinder top
Bar scheme, it is more for the technical solution of the research of fiber drawing furnace oven roof sealing device；But for the technology of stove lower sealing device
In scheme, currently available technology is mainly silica wool scheme, selects high-purity quartz cotton to be wrapped at gap at lower fire door, is hindered
Gas is kept off from lower mouth to enter in furnace body, but it is cumbersome, often there are two kinds of problems：Owe filling and cross to fill；If operator
Member's way deficient filling not in place, can cause silica wool to expand not in place, air is easily accessible in fiber drawing furnace, causes graphite piece in stove
Oxidation, so as to shorten the service life of graphite piece；If silica wool crosses because operating personnel's way is not in place and fills, stone after being heated
English cotton crosses expansion, and meeting hard-pressed bale causes optical fiber surface coarse, influence fiber strength in optical fiber surface, easy adhesion.
Therefore, in the prior art on extension stove lower sealing device produced problem, it is necessary to a kind of new extension stove
Lower sealing device, can prevent the oxidation of graphite piece in stove to avoid preform surfaces stick impurity, improve fiber strength.
Utility model content
To overcome in reducing optical wand drawing process existing in the prior art, lower sealing device is poorly sealed, packing material adhesion
Preform, the problem of causing fiber drawing furnace oxidation, preform rough surface, the utility model provides a kind of extension stove
Lower sealing device.
In the technical solution of the utility model：One kind extension stove lower sealing device, it is characterised in that：Wrap successively from top to bottom
Include：Graphite cavity plate I, graphite cavity plate II, overhead gage, graphite cavity plate III, graphite cavity plate IV, lower baffle plate, graphite cavity plate V, graphite chamber
Plate VI；The graphite cavity plate I and graphite cavity plate II, graphite cavity plate III and graphite cavity plate IV, graphite cavity plate V and graphite cavity plate VI
Between there is toroidal cavity structure, form air flue；The overhead gage, lower baffle plate form guard seal；The extension stove sealing dress
Put and furnace body slitless connection.
Further, as a kind of optional embodiment of the utility model, the graphite cavity plate I, graphite cavity plate II, graphite chamber
Plate III, graphite cavity plate IV, graphite cavity plate V, graphite cavity plate VI are ring-shaped structure, successively closed assembly composition sealing device；It is described
Ring-shaped structure is a monoblock circular ring shape graphite cake, or the ring-shaped structure is composed of two half semi-circular graphite cakes；
Circular hole among the ring-shaped structure is used for passing through preform, and has gap between preform.
Further, as the utility model another kind optional embodiment, I lower surface of graphite cavity plate, the graphite
There is circular groove structure in II upper surface of cavity plate, and upper and lower circular groove structure is completely corresponding, forms a toroidal cavity knot
Structure, forms the first air flue, for the protective gas that circulates；There are some half arcs to slit for the side in the circular groove towards the center of circle
Mouthful, upper lower half arc gap forms the stomata towards the center of circle, for blowing out the gas in the first air flue, on preform surface
Form first of air seal circle；III lower surface of graphite cavity plate, IV upper surface of graphite cavity plate have circular groove structure,
Upper and lower circular groove structure is completely corresponding, forms a toroidal cavity structure, forms the second air flue, for the protection gas that circulates
Body；The side in the circular groove towards the center of circle has some half arc gap, and upper lower half arc gap is formed towards the center of circle
Stomata, for blowing out the gas in the second air flue, preform surface formed second air seal circle；The graphite
There are circular groove structure in V lower surface of cavity plate, VI upper surface of graphite cavity plate, and upper and lower circular groove structure is completely corresponding, group
Into a toroidal cavity structure, the 3rd air flue is formed, for the protective gas that circulates；Side of the circular groove towards the center of circle
With some half arc gap, upper lower half arc gap forms the stomata towards the center of circle, for blowing out the gas in the 3rd air flue,
The 3rd air seal circle is formed on preform surface.
Further, the baffle that the overhead gage, lower baffle plate are docked by two half blocks forms, and every half block baffle is in interface
It is provided with semicircular notch at the heart, two notches form a circular hole passages, for by preform, and and optical fiber
There is gap between prefabricated rods.
Further, as the utility model another kind optional embodiment, the graphite cavity plate II is close to center of circle side
Lower surface, close to the upper surface of center of circle side, has concave, opposite step, two steps composition groove-like with graphite cavity plate III
Structure, for being inserted into overhead gage, forms first of guard seal；The graphite cavity plate IV is close to the lower surface of center of circle side and stone
Black cavity plate V has concave, opposite step, two steps composition groove-like structure, is used for close to the upper surface of center of circle side
Lower baffle plate is inserted into, forms second guard seal.
Further, it is in the symmetrical air nozzle of 180 degree to have two on the outside of the sealing device at corresponding each air flue, the gas
Nozzle is connected with air flue, for being passed through protective gas into air flue.
Further, the overhead gage, lower baffle plate are one kind in graphite, quartz；Manually control or cylinder are intelligently controlled
The size of circular hole passage in the mode controllable register of system.
Compared with prior art, the beneficial effects of the utility model are：
1) extending stove lower sealing device has the upper and lower baffle of controllable extension stove lower sealing device pore size, is easy to
The smooth extension of the preform of different-diameter size is with passing through.
2) extension stove lower sealing device has three layers of air seal circle, can prevent that air from entering furnace body and furnace body gas leakage is made
Into the oxidation of furnace body graphite piece.
3) component inside extension stove lower sealing device and preform are contactless, can ensure preform surface
Smoothness, improve fiber strength.
Brief description of the drawings
Fig. 1 is the extension stove lower sealing device left view sectional view of the utility model；
Fig. 2, which is that the extension stove lower sealing device of the utility model is right, regards sectional view；
Attached drawing 1 marks as follows：Graphite cavity plate I 1, graphite cavity plate II 2, graphite cavity plate III 3, graphite cavity plate IV 4, graphite cavity plate
V 5, graphite cavity plate VI 6, overhead gage 7, lower baffle plate 8,9 at optical wand reducing.
Attached drawing 2 marks as follows：Graphite cavity plate I 1, graphite cavity plate II 2, graphite cavity plate III 3, graphite cavity plate IV 4, graphite cavity plate
V 5, graphite cavity plate VI 6, overhead gage 7, lower baffle plate 8,9 at optical wand reducing.
Embodiment
Below in conjunction with drawings and examples, the utility model is further elaborated.It should be appreciated that this place is retouched
The specific embodiment stated only to explain the utility model, is not used to limit the utility model.
Embodiment 1
As depicted in figs. 1 and 2, a kind of extension stove lower sealing device, it is characterised in that：Include successively from top to bottom：Graphite
Cavity plate I, graphite cavity plate II, overhead gage, graphite cavity plate III, graphite cavity plate IV, lower baffle plate, graphite cavity plate V, graphite cavity plate VI；Institute
State has between graphite cavity plate I and graphite cavity plate II, graphite cavity plate III and graphite cavity plate IV, graphite cavity plate V and graphite cavity plate VI
Toroidal cavity structure, forms air flue；The overhead gage, lower baffle plate form guard seal；The extension stove sealing device and furnace body
Slitless connection.
There is circular groove structure for I lower surface of graphite cavity plate, II upper surface of graphite cavity plate, up and down circle
Arc groove structure is completely corresponding, forms a toroidal cavity structure, the first air flue is formed, for the protective gas that circulates；It is described
The side in circular groove towards the center of circle has some half arc gap, and upper lower half arc gap forms the stomata towards the center of circle,
For blowing out the gas in the first air flue, first of air seal circle is formed on preform surface；The graphite cavity plate III
Lower surface, IV upper surface of graphite cavity plate have circular groove structure, and upper and lower circular groove structure is completely corresponding, form one
Toroidal cavity structure, forms the second air flue, for the protective gas that circulates；If the side in the circular groove towards the center of circle has
Dry half arc gap, upper lower half arc gap forms the stomata towards the center of circle, for blowing out the gas in the second air flue, in optical fiber
Prefabricated rods surface forms second air seal circle；There are circular arc in V lower surface of graphite cavity plate, VI upper surface of graphite cavity plate
Connected in star structure, upper and lower circular groove structure is completely corresponding, forms a toroidal cavity structure, forms the 3rd air flue, is used for
Circulate protective gas；The side in the circular groove towards the center of circle has some half arc gap, upper lower half arc gap shape
Into the stomata towards the center of circle, for blowing out the gas in the 3rd air flue, the 3rd air seal is formed on preform surface
Circle.
In the present embodiment, by being blown into protection gas into three air flues, make to fill in the cavity structure of stove lower sealing device
Full protective gas, outside air cannot be introduced into furnace body, so as to avoid, because air enters extension stove, causing furnace oxidation.
The utility model belongs to fiber manufacturing installation technical field, more particularly relates to a kind of extension stove lower sealing device.
Embodiment 2
A kind of as shown in Fig. 2, extension stove lower sealing device, it is characterised in that：Include successively from top to bottom：Graphite cavity plate I,
Graphite cavity plate II, overhead gage, graphite cavity plate III, graphite cavity plate IV, lower baffle plate, graphite cavity plate V, graphite cavity plate VI；The graphite
There is annular sky between cavity plate I and graphite cavity plate II, graphite cavity plate III and graphite cavity plate IV, graphite cavity plate V and graphite cavity plate VI
Cavity configuration, forms air flue；The overhead gage, lower baffle plate form guard seal；The extension stove sealing device and furnace body are seamless right
Connect.
The baffle docked for overhead gage, lower baffle plate by two half blocks forms, and every half block baffle is set at interface center
It is equipped with semicircular notch, two notches form a circular hole passages, for by preform, and and preform
Between have gap；Graphite cavity plate II is close to the lower surface of center of circle side and graphite cavity plate III close to the upper surface of center of circle side, tool
There is concave, opposite step, two steps composition groove-like structure, for being inserted into overhead gage, forms first of guard seal；Institute
Graphite cavity plate IV is stated close to the lower surface of center of circle side and graphite cavity plate V close to the upper surface of center of circle side, have it is concave,
Opposite step, two steps composition groove-like structure, for being inserted into lower baffle plate, forms second guard seal；Overhead gage, lower block
Plate is graphite, one kind in quartz；Manually control or cylinder intelligent control mode controllable register in circular hole passage it is big
It is small.
In the present embodiment, overhead gage and lower baffle plate are carbon barrier, according to the straight of extension stove lower end exit optical fiber
Footpath size adjusts the size of upper and lower carbon barrier circular hole passage by way of cylinder intelligent control, easy to different-diameter
Preform smoothly extends, while avoids the problem that causing air furnace body caused by aoxidize because aperture is excessive, to furnace body
Play certain sealing function.
The utility model belongs to fiber manufacturing installation technical field, more particularly relates to a kind of extension stove lower sealing device.
The preferred embodiment of the utility model has shown and described in described above, as previously described, it should be understood that this practicality is new
Type is not limited to form disclosed herein, is not to be taken as the exclusion to other embodiment, and available for various other groups
Conjunction, modification and environment, and above-mentioned teaching or the technology of association area can be passed through in utility model contemplated scope described herein
Or knowledge is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, then
All should be in the appended claims for the utility model protection domain.
Claims (10)
1. one kind extension stove lower sealing device, it is characterised in that：Include successively from top to bottom：Graphite cavity plate I (1), graphite cavity plate
II (2), overhead gage (7), graphite cavity plate III (3), graphite cavity plate IV (4), lower baffle plate (8), graphite cavity plate V (5), graphite cavity plate
Ⅵ(6)；The graphite cavity plate I (1) and graphite cavity plate II (2), graphite cavity plate III (3) and graphite cavity plate IV (4), graphite cavity plate V
(5) there is toroidal cavity structure between graphite cavity plate VI (6), form air flue；The overhead gage (7), lower baffle plate (8) form gear
Plate seals；The extension stove sealing device and furnace body slitless connection.
2. extension stove lower sealing device according to claim 1, it is characterised in that：The graphite cavity plate I (1), graphite chamber
Plate II (2), graphite cavity plate III (3), graphite cavity plate IV (4), graphite cavity plate V (5), graphite cavity plate VI (6) are circular knot
Structure, successively closed assembly composition sealing device；The ring-shaped structure is a monoblock circular ring shape graphite cake, or the ring-shaped structure by
Two half semi-circular graphite cakes are composed；Circular hole among the ring-shaped structure is used for passing through preform, and with light
There is gap between fine prefabricated rods.
3. extension stove lower sealing device according to claim 2, it is characterised in that：Described I (1) lower surface of graphite cavity plate,
There is circular groove structure in described II (2) upper surface of graphite cavity plate, and upper and lower circular groove structure is completely corresponding, forms one
Toroidal cavity structure, forms the first air flue, for the protective gas that circulates；If the side in the circular groove towards the center of circle has
Dry half arc gap, upper lower half arc gap forms the stomata towards the center of circle, for blowing out the gas in the first air flue, in optical fiber
Prefabricated rods surface forms first of air seal circle.
4. extension stove lower sealing device according to claim 2, it is characterised in that：Described III (3) lower surface of graphite cavity plate,
Graphite cavity plate IV (4) upper surface has circular groove structure, and upper and lower circular groove structure is completely corresponding, forms an annular
Cavity structure, forms the second air flue, for the protective gas that circulates；The side in the circular groove towards the center of circle has some half
Arc gap, upper lower half arc gap forms the stomata towards the center of circle, for blowing out the gas in the second air flue, in optical fiber prefabricating
Rod surface forms second air seal circle.
5. extension stove lower sealing device according to claim 2, it is characterised in that：Described V (5) lower surface of graphite cavity plate,
There is circular groove structure in graphite cavity plate VI (6) upper surface, and upper and lower circular groove structure is completely corresponding, forms an annular
Cavity structure, forms the 3rd air flue, for the protective gas that circulates；The side in the circular groove towards the center of circle has some half
Arc gap, upper lower half arc gap forms the stomata towards the center of circle, for blowing out the gas in the 3rd air flue, in optical fiber prefabricating
Rod surface forms the 3rd air seal circle.
6. stove lower sealing device is extended according to claim 3-5 any one of them, it is characterised in that：The overhead gage (7), under
The baffle that baffle (8) is docked by two half blocks forms, and every half block baffle is provided with semicircular notch at interface center, and two
A notch forms a circular hole passage, for by preform, and has gap between preform.
7. extension stove lower sealing device according to claim 2, it is characterised in that：The graphite cavity plate II (2) is close to circle
The lower surface of heart side and graphite cavity plate III (3) have a concave, opposite step close to the upper surface of center of circle side, two
Rank forms groove-like structure, for being inserted into overhead gage (7), forms first of guard seal.
8. extension stove lower sealing device according to claim 2, it is characterised in that：The graphite cavity plate IV (4) is close to circle
The lower surface of heart side and graphite cavity plate V (5) have a concave, opposite step close to the upper surface of center of circle side, two
Rank forms groove-like structure, for being inserted into lower baffle plate (8), forms second guard seal.
9. the extension stove lower sealing device according to claim 6, it is characterised in that：It is corresponding every on the outside of the sealing device
It is in the symmetrical air nozzle of 180 degree to have two at a air flue, and the air nozzle is connected with air flue, for being passed through protection gas into air flue
Body.
A kind of 10. extension stove lower sealing device according to claim 6, it is characterised in that：The overhead gage (7), lower baffle plate
(8) it is graphite, one kind in quartz；Manually control or cylinder intelligent control mode controllable register in circular hole passage it is big
It is small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721135247.XU CN207276494U (en) | 2017-09-05 | 2017-09-05 | One kind extension stove lower sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721135247.XU CN207276494U (en) | 2017-09-05 | 2017-09-05 | One kind extension stove lower sealing device |
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| Publication Number | Publication Date |
|---|---|
| CN207276494U true CN207276494U (en) | 2018-04-27 |
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ID=61990019
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721135247.XU Active CN207276494U (en) | 2017-09-05 | 2017-09-05 | One kind extension stove lower sealing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555780A (en) * | 2017-09-05 | 2018-01-09 | 江苏斯德雷特通光光纤有限公司 | One kind extension stove lower sealing device |
| CN109264986A (en) * | 2018-11-26 | 2019-01-25 | 南京华信藤仓光通信有限公司 | A kind of sheath covering plate structure of optical fiber drawing heating furnace |
| CN111018337A (en) * | 2019-10-24 | 2020-04-17 | 长飞光纤光缆股份有限公司 | HEC optical fiber collapsing furnace gas path system and gas sealing method |
-
2017
- 2017-09-05 CN CN201721135247.XU patent/CN207276494U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555780A (en) * | 2017-09-05 | 2018-01-09 | 江苏斯德雷特通光光纤有限公司 | One kind extension stove lower sealing device |
| CN107555780B (en) * | 2017-09-05 | 2023-08-08 | 江苏斯德雷特光纤科技有限公司 | Sealing device under extension furnace |
| CN109264986A (en) * | 2018-11-26 | 2019-01-25 | 南京华信藤仓光通信有限公司 | A kind of sheath covering plate structure of optical fiber drawing heating furnace |
| CN109264986B (en) * | 2018-11-26 | 2019-03-29 | 南京华信藤仓光通信有限公司 | A kind of sheath covering plate structure of optical fiber drawing heating furnace |
| CN111018337A (en) * | 2019-10-24 | 2020-04-17 | 长飞光纤光缆股份有限公司 | HEC optical fiber collapsing furnace gas path system and gas sealing method |
| CN111018337B (en) * | 2019-10-24 | 2021-04-02 | 长飞光纤光缆股份有限公司 | HEC optical fiber collapsing furnace gas path system and gas sealing method |
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| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: No. 219, Beihai West Road, Haimen Street, Haimen District, Nantong City, Jiangsu Province 226199 Patentee after: Jiangsu Sterlite Tongguang Fiber Co.,Ltd. Address before: 226100 219 Beihai West Road, Haimen City, Nantong City, Jiangsu Province Patentee before: JIANGSU STERLITE TONGGUANG FIBER Co.,Ltd. |