CN215288528U - Sealing device of optical fiber perform reducing tail handle - Google Patents
Sealing device of optical fiber perform reducing tail handle Download PDFInfo
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- CN215288528U CN215288528U CN202120072042.1U CN202120072042U CN215288528U CN 215288528 U CN215288528 U CN 215288528U CN 202120072042 U CN202120072042 U CN 202120072042U CN 215288528 U CN215288528 U CN 215288528U
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Abstract
The utility model relates to a sealing device of optical fiber perform reducing tail-stock belongs to optical fiber perform technical field. Including quartz sleeve and sealed cowling, quartz sleeve overlaps in the thin footpath section of reducing caudal peduncle, the sealed cowling cover is in the thick footpath section of reducing caudal peduncle, the quartz sleeve outer wall is equipped with the clamping ring, the clamping ring with sealed cowling sealing connection. The wire drawing furnace is characterized in that an upper flange plate is arranged on the upper end face of the sealing cover, a lower flange plate is arranged on the lower end face of the sealing cover, the lower flange plate is supported at a wire drawing furnace opening, the upper flange plate is in butt joint with the compression ring, and a sealing gasket is arranged at the butt joint position. The sealing cover and the pressure ring are respectively made of quartz, and the sealing washer is a quartz felt. This application is simple structure not only, labour saving and time saving, can seal reducing caudal peduncle department in whole journey, and the sealed cowling has the guard action to the sleeve moreover, has prolonged quartz sleeve's life.
Description
Technical Field
The utility model relates to a sealing device of optical fiber perform reducing tail-stock belongs to optical fiber perform technical field.
Background
The optical fiber is produced by heating (about 2000 ℃) and softening an optical fiber preform in an optical fiber drawing furnace and drawing out a fine quartz fiber from the furnace bottom. Use graphite heating element in the optical fiber wire drawing stove, in order to protect graphite spare normal work under high temperature, need to let into protective gas, generally inert gas in the stove: argon and helium, and simultaneously, the external air is required to be controlled to enter the furnace, so that the graphite piece is prevented from being burnt. After the preform is produced, there is typically a tapered tail. The sealing device is arranged at the tail part of the fiber drawing furnace, and the sealing effect of the sealing device directly determines the flow of the outside air flowing into the optical fiber drawing furnace.
At present, the commonly used sealing mode of the furnace mouth at the upper end of the optical fiber drawing furnace is as follows:
1. the diameter-variable tail handle is cut and welded with a thick tail handle with the same thickness as the preform, but the steps of tail cutting, welding, acid washing and the like are needed, so that the process is complex, and the investment of equipment and human capital is increased.
2. A quartz sleeve with the same thickness as the non-diameter-variable area of the prefabricated rod is directly sleeved on the diameter-variable tail handle to cover the diameter-variable area, but the quartz sleeve is easy to melt and adhere with the prefabricated rod in a hot area of a wire drawing furnace, so that the service life of the quartz sleeve is extremely short.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a sealing device of a reducing tail handle of an optical fiber perform aiming at the prior art, which can not only seal the reducing tail handle in the whole process; and simple structure, labour saving and time saving prolongs quartz sleeve's life.
The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a sealing device of optical fiber perform reducing caudal peduncle, includes quartz sleeve and sealed cowling, quartz sleeve overlaps in the thin footpath section of reducing caudal peduncle, the sealed cowling cover is at the thick footpath section of reducing caudal peduncle, the quartz sleeve outer wall is equipped with the clamping ring, the clamping ring with sealed cowling sealing connection.
The wire drawing furnace is characterized in that an upper flange plate is arranged on the upper end face of the sealing cover, a lower flange plate is arranged on the lower end face of the sealing cover, the lower flange plate is supported at a wire drawing furnace opening, the upper flange plate is in butt joint with the compression ring, and a sealing gasket is arranged at the butt joint position.
The sealing cover and the pressure ring are respectively made of quartz, and the sealing washer is a quartz felt.
Compared with the prior art, the utility model has the advantages of: the utility model provides a sealing device of optical fiber perform reducing tail handle, establishes quartz sleeve at prefabricated excellent reducing tail handle department cover, and quartz sleeve supports on optical fiber perform, and the cover is established to the cover on quartz sleeve, and is equipped with seal ring on the seal cover and presses on the seal cover through clamping ring warp seal ring, and seal ring seals the clearance between seal cover inner wall and the quartz sleeve outer wall, when wire drawing to afterbody, whole stability when keeping sealed in order to guarantee wire drawing technology. This application is simple structure not only, labour saving and time saving, can seal reducing caudal peduncle department in whole journey, and the sealed cowling has the guard action to the sleeve moreover, has prolonged quartz sleeve's life.
Drawings
Fig. 1 is a schematic view of a sealing device of a reducing tail handle of an optical fiber preform rod according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
in the figure, 1 quartz sleeve, 2 pressure rings, 3 quartz felt, 4 sealing covers, 4.1 lower flange plates, 4.2 upper flange plates, 5 optical fiber prefabricated rods and 5.1 reducing tail handles are arranged.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 and 2, the sealing device for the reducing tail handle of the optical fiber perform in this embodiment includes a quartz sleeve 1, the quartz sleeve 1 is sleeved on the small diameter section of the reducing tail handle 5.1, and the bottom of the quartz sleeve 1 is supported on the large diameter section of the reducing tail handle 5.1, so that the quartz sleeve 1 is in contact with the optical fiber perform 5, and when the optical fiber perform 5 moves, the quartz sleeve 1 moves synchronously. The quartz sleeve 1 is sleeved with a sealing cover 4 made of quartz, the sealing cover 4 is arranged at the joint of the quartz sleeve 1 and the reducing tail handle 5.1, and a gap is formed between the inner wall of the sealing cover 4 and the outer wall of the quartz sleeve 1. The upper end face of the sealing cover 4 is provided with an upper flange plate 4.2, the lower end face of the sealing cover 4 is provided with a lower flange plate 4.1, the upper flange plate 4.2 is provided with a quartz felt 3, the quartz felt 3 presses the upper flange plate 4.2 through a pressing ring made of quartz, so that the quartz felt 3 and the sealing cover 4 move synchronously, the quartz felt 3 seals a gap, and then the reducing tail handle 5.1 is sealed.
When 5 fiber drawing of optical fiber perform to the afterbody stage, the reducing tail handle 5.1 decline of prefabricated stick is followed to sealing boot 4, and the lower flange 4.1 and the contact of wire drawing furnace mouth of sealing boot 4 bottom hold up sealing boot 4 upwards, break away from with prefabricated stick. At this time, the sealing between the sealing cover 4 and the quartz sleeve 1 is realized by the quartz felt 3, and the sealing is kept all the way to ensure the stability of the wire drawing process. This application simple structure, labour saving and time saving can seal reducing caudal peduncle department in whole journey, and the sealed cowling has the guard action to the sleeve moreover, has prolonged quartz sleeve's life.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (3)
1. The utility model provides a sealing device of optical fiber perform reducing caudal peduncle which characterized in that: including quartz sleeve (1) and sealed cowling (4), quartz sleeve (1) overlaps in the thin footpath section of reducing caudal peduncle (5.1), sealed cowling (4) cover is in the thick footpath section of reducing caudal peduncle (5.1), quartz sleeve (1) outer wall is equipped with clamping ring (2), clamping ring (2) with sealed cowling (4) sealing connection.
2. The apparatus of claim 1, wherein the sealing means comprises: the wire drawing furnace is characterized in that an upper flange plate (4.2) is arranged on the upper end face of the sealing cover (4), a lower flange plate (4.1) is arranged on the lower end face of the sealing cover (4), the lower flange plate (4.1) is supported at a wire drawing furnace opening, the upper flange plate (4.2) is in butt joint with the pressing ring (2), and a sealing gasket is arranged at the butt joint.
3. The sealing device of the reducing tail handle of the optical fiber preform rod as claimed in claim 2, wherein: the sealing cover (4) and the pressure ring (2) are respectively made of quartz, and the sealing washer is a quartz felt (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120072042.1U CN215288528U (en) | 2021-01-12 | 2021-01-12 | Sealing device of optical fiber perform reducing tail handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120072042.1U CN215288528U (en) | 2021-01-12 | 2021-01-12 | Sealing device of optical fiber perform reducing tail handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215288528U true CN215288528U (en) | 2021-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120072042.1U Active CN215288528U (en) | 2021-01-12 | 2021-01-12 | Sealing device of optical fiber perform reducing tail handle |
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| CN (1) | CN215288528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988688A (en) * | 2022-06-20 | 2022-09-02 | 江苏永鼎股份有限公司 | Sealing device and method for wire drawing furnace with original tail handle of preform rod |
-
2021
- 2021-01-12 CN CN202120072042.1U patent/CN215288528U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988688A (en) * | 2022-06-20 | 2022-09-02 | 江苏永鼎股份有限公司 | Sealing device and method for wire drawing furnace with original tail handle of preform rod |
| CN114988688B (en) * | 2022-06-20 | 2023-12-29 | 江苏永鼎股份有限公司 | Sealing device and method for preform original tail handle wire drawing furnace |
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