CN214578173U - Gas blowing device convenient to optical fiber perform heat treatment butt fusion - Google Patents
Gas blowing device convenient to optical fiber perform heat treatment butt fusion Download PDFInfo
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- CN214578173U CN214578173U CN202023133695.0U CN202023133695U CN214578173U CN 214578173 U CN214578173 U CN 214578173U CN 202023133695 U CN202023133695 U CN 202023133695U CN 214578173 U CN214578173 U CN 214578173U
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Abstract
The utility model provides a blowing device convenient for heat treatment fusion of an optical fiber perform, which is used for being matched with the perform and comprises a tension core and a tension sleeve; the tensioning core is arranged on the inner side of the tensioning sleeve, the tensioning core is used for expanding the tensioning sleeve outwards to ensure that the tensioning sleeve is attached to the inner wall of the preform rod, an air passage for blowing air to the preform rod is arranged inside the tensioning core, and external threads are arranged on the surface of the tensioning core; and a threaded flange is correspondingly arranged on one side of the tensioning sleeve, which is far away from the preform rod. The utility model discloses the tapering that utilizes the core tip that rises makes the tight cover that rises take place the deformation of outside expansion, makes gas blowing device and prefabricated excellent hole closely cooperate, the mobility of compressed air in the reinforcing prefabricated excellent to guarantee the cleanliness factor of prefabricated excellent butt fusion department and prefabricated excellent inner wall.
Description
Technical Field
The utility model belongs to the optical fiber manufacturing field especially relates to a gas blowing device convenient to optical fiber perform heat treatment butt fusion.
Background
The preform rod needs to pour into compressed air into at the hollow inner wall of preform rod in the heat treatment welding process, increases the cleanliness factor in the preform rod inner wall, because of there is some difference in current preform rod internal diameter size and current gas blowing device size singleness, leads to current gas blowing device unable closely to cooperate when inserting the preform rod inner wall, causes the compressed air mobility of preform rod inner wall poor, causes preform rod inner wall and butt fusion kneck production pollution in heat treatment process.
The heat treatment fusion welding is an important link in the pretreatment of the prefabricated rod, the cleanliness of the inner wall of the prefabricated rod and the fusion welding interface directly influences the strength and the light attenuation of the manufactured optical fiber, and the blowing device convenient for the heat treatment fusion welding of the prefabricated rod of the optical fiber is provided for improving the cleanliness of the inner wall of the prefabricated rod and the fusion welding interface.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a gas blowing device convenient to optical fiber perform heat treatment butt fusion to solve the unable closely matched problem of gas blowing device when inserting in the perform.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a blowing device convenient for heat treatment fusion of an optical fiber preform is used for being matched with the preform and comprises a tensioning core and a tensioning sleeve;
the tensioning core is arranged on the inner side of the tensioning sleeve, the tensioning core is used for expanding the tensioning sleeve outwards to ensure that the tensioning sleeve is attached to the inner wall of the preform rod, an air passage for blowing air to the preform rod is arranged inside the tensioning core, and external threads are arranged on the surface of the tensioning core;
and a threaded flange is correspondingly arranged on one side of the tensioning sleeve, which is far away from the preform rod.
Further, the tensioning core comprises a tensioning portion and a connecting portion, the tensioning portion and the connecting portion are integrally formed, the tensioning portion is of a frustum-shaped structure, and the outer diameter of the large end of the tensioning portion is larger than that of the small end of the tensioning portion;
the connecting portion are cylindrical structures, the connecting portion are fixedly arranged at the end portion of the small end of the tensioning portion, external threads are further arranged at one end, close to the small end of the tensioning portion, of the connecting portion, and the connecting portion is in threaded connection with the threaded flange.
Furthermore, the expansion sleeve comprises a boss and an expansion sleeve, the expansion sleeve is fixedly arranged at one end of the boss close to the preform rod, and the boss and the expansion sleeve are integrally formed;
the expansion sleeve is provided with a slot and a split, and the expansion sleeve is matched with the tensioning part.
Furthermore, the top end of the expansion sleeve is inwards provided with a round angle.
Further, the inner diameter of the expansion sleeve is larger than the outer diameter of the connecting part close to the small end of the tensioning part, and the outer diameter of the expansion sleeve is smaller than the inner hole diameter of the preform rod.
Further, a first bolt hole is formed in the boss;
and a second bolt hole corresponding to the first bolt hole is formed in the threaded flange, and the threaded flange is fixedly connected with the boss through bolts.
Further, the bolt is a hexagon socket head cap screw.
Compared with the prior art, a gas blowing device convenient to optical fiber perform heat treatment butt fusion have following advantage:
(1) the blowing device convenient for the heat treatment fusion of the optical fiber perform utilizes the taper of the end part of the tension core to lead the tension sleeve to generate outward expansion deformation, leads the blowing device to be closely matched with the inner hole of the perform, and enhances the fluidity of compressed air in the perform, thereby ensuring the cleanliness of the fusion joint of the perform and the inner wall of the perform;
(2) a gas blowing device convenient to optical fiber perform heat treatment butt fusion simple structure, easy manufacturing can be applied to different perform internal diameter sizes in a flexible way, is applicable to the large tracts of land and promotes.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is an exploded view of a blowing apparatus for facilitating heat treatment fusion of an optical fiber preform according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an air blowing device and a preform for facilitating heat treatment fusion of an optical fiber preform according to an embodiment of the present invention.
Description of reference numerals:
1-tensioning core; 101-the airway; 102-a tensioning part; 103-a connecting portion; 2-tensioning sleeve; 201-a boss; 202-tensioning sleeve; 3-flange nut; 4-a bolt; 5-performing the rod.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 and 2, a blowing device for facilitating heat treatment fusion of an optical fiber preform is used for being matched with a preform 5, and comprises a tensioning core 1 and a tensioning sleeve 2;
the tensioning core 1 is arranged on the inner side of the tensioning sleeve 2, the tensioning core 1 is used for enabling the tensioning sleeve 2 to expand outwards to ensure that the tensioning sleeve 2 is attached to the inner wall of the prefabricated rod 5, an air passage 101 used for blowing air to the prefabricated rod 5 is arranged inside the tensioning core 1, the diameter of the air passage is phi 8.5, external threads are arranged on the surface of the tensioning core 1, the tensioning core 1 adopted in the patent application is 304# stainless steel, the tensioning core 1 is the tensioning core 1 with the size of phi 38 x phi 12 x 230mm, and the surface of the tensioning core 1 is provided with the external threads;
one side that tight cover 2 kept away from prefabricated stick 5 rises still corresponds and is equipped with threaded flange 3, threaded flange's internal thread is M30 pipe thread, threaded flange 3 passes through threaded connection with the tight core 1 that rises, and the threaded flange 3 material that this patent application adopted is 304# stainless steel, and the size is phi 76 x phi 30 x 8 mm's threaded flange 3.
The tensioning core 1 comprises a tensioning portion 102 and a connecting portion 103, the tensioning portion 102 and the connecting portion 103 are integrally formed, the tensioning portion 102 is of a frustum-shaped structure, and the outer diameter of the large end of the tensioning portion 102 is larger than that of the small end of the tensioning portion 102;
the connecting part 103 is of a cylindrical structure, the connecting part 103 is fixedly arranged at the end part of the small end of the tensioning part 102, the connecting part 103 is inserted into the tensioning sleeve 2, an external thread is further arranged at one end, close to the small end of the tensioning part 102, of the connecting part 103, the connecting part 103 is in threaded connection with the threaded flange 3, and the external thread is an M30 pipe thread with the height of 80mm and the length of 65 mm.
The expansion sleeve 2 comprises a boss 201 and an expansion sleeve 202, the expansion sleeve 202 is fixedly arranged at one end of the boss 201 close to the preform rod 5, and the boss 201 and the expansion sleeve 202 are integrally formed;
the expansion sleeve 202 is provided with a groove and is split, the expansion sleeve 202 is matched with the tensioning portion 102, the tensioning sleeve adopted in the application is made of Teflon, the size of the tensioning sleeve is phi 76 multiplied by phi 31 multiplied by 87mm, and the tensioning range of the tensioning sleeve is phi 57-phi 42 mm.
The top end of the expansion sleeve 202 is provided with a round angle inwards.
The inner diameter of the expansion sleeve 202 is larger than the outer diameter of the connecting part 103 close to the small end of the tensioning part 102, and the outer diameter of the expansion sleeve 202 is smaller than the inner hole diameter of the preform rod 5.
A first bolt hole is formed in the boss 201;
and a second bolt hole corresponding to the first bolt hole is formed in the threaded flange 3, and the threaded flange 3 is fixedly connected with the boss 201 through a bolt 4.
Bolt 4 is hexagon socket head cap screw, and the hexagon socket head cap screw that this patent application adopted the size to be M5 x 15 hexagon socket head cap screw.
When the scheme is implemented, during air blowing, the air blowing device is inserted into an inner hole of the prefabricated rod 5, the tensioning sleeve 2 and the threaded flange 3 rotate clockwise, the tensioning sleeve 2 and the threaded flange 3 rise, the tensioning sleeve 2 and the tensioning core 1 are extruded due to a clearance, the tensioning sleeve 2 expands outwards, and after the clearance is tightly matched, compressed air is blown into the inner hole of the prefabricated rod 5 through the inner hole of the air blowing device; after the air blowing is finished, the tensioning sleeve 2 and the threaded flange 3 rotate anticlockwise, the tensioning sleeve 2 and the threaded flange 3 descend, the tensioning sleeve 2 contracts inwards, and the air blowing device is taken out.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a gas blowing device convenient to optical fiber perform heat treatment butt fusion for set up with prefabricated stick (5) cooperation, its characterized in that: comprises a tension core (1) and a tension sleeve (2);
the tensioning core (1) is arranged on the inner side of the tensioning sleeve (2), the tensioning core (1) is used for enabling the tensioning sleeve (2) to expand outwards to ensure that the tensioning sleeve (2) is attached to the inner wall of the prefabricated rod (5), an air passage (101) used for blowing air to the prefabricated rod (5) is arranged inside the tensioning core (1), and external threads are arranged on the surface of the tensioning core (1);
and a threaded flange (3) is correspondingly arranged on one side of the tensioning sleeve (2) far away from the preform rod (5).
2. The blowing apparatus for facilitating heat treatment fusion of an optical fiber preform according to claim 1, wherein: the tensioning core (1) comprises a tensioning portion (102) and a connecting portion (103), the tensioning portion (102) and the connecting portion (103) are integrally formed, the tensioning portion (102) is of a frustum-shaped structure, and the outer diameter of the large end of the tensioning portion (102) is larger than that of the small end of the tensioning portion (102);
the connecting part (103) is of a cylindrical structure, the connecting part (103) is fixedly arranged at the end part of the small end of the tensioning part (102), an external thread is further arranged at one end, close to the small end of the tensioning part (102), of the connecting part (103), and the connecting part (103) is in threaded connection with the threaded flange (3).
3. The blowing apparatus for facilitating heat treatment fusion of an optical fiber preform according to claim 2, wherein: the tensioning sleeve (2) comprises a boss (201) and an expansion sleeve (202), the expansion sleeve (202) is fixedly arranged at one end of the boss (201) close to the preform rod (5), and the boss (201) and the expansion sleeve (202) are integrally formed;
the expansion sleeve (202) is provided with a groove and is split, and the expansion sleeve (202) is matched with the tensioning part (102).
4. The blowing apparatus for facilitating heat treatment fusion of an optical fiber preform according to claim 3, wherein: the top end of the expansion sleeve (202) is provided with a round angle inwards.
5. The blowing apparatus for facilitating heat treatment fusion of an optical fiber preform according to claim 3, wherein: the inner diameter of the expansion sleeve (202) is larger than the outer diameter of the connecting part (103) close to the small end of the tensioning part (102), and the outer diameter of the expansion sleeve (202) is smaller than the inner hole diameter of the preform (5).
6. The blowing apparatus for facilitating heat treatment fusion of an optical fiber preform according to claim 3, wherein: a first bolt hole is formed in the boss (201);
and a second bolt hole corresponding to the first bolt hole is formed in the threaded flange (3), and the threaded flange (3) is fixedly connected with the boss (201) through a bolt (4).
7. The blowing apparatus for facilitating heat treatment fusion of an optical fiber preform according to claim 6, wherein: the bolt (4) is an inner hexagon bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023133695.0U CN214578173U (en) | 2020-12-23 | 2020-12-23 | Gas blowing device convenient to optical fiber perform heat treatment butt fusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023133695.0U CN214578173U (en) | 2020-12-23 | 2020-12-23 | Gas blowing device convenient to optical fiber perform heat treatment butt fusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214578173U true CN214578173U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023133695.0U Active CN214578173U (en) | 2020-12-23 | 2020-12-23 | Gas blowing device convenient to optical fiber perform heat treatment butt fusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214578173U (en) |
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2020
- 2020-12-23 CN CN202023133695.0U patent/CN214578173U/en active Active
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