CN214586128U - Dry-type loose tube aerating device - Google Patents
Dry-type loose tube aerating device Download PDFInfo
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- CN214586128U CN214586128U CN202023240214.6U CN202023240214U CN214586128U CN 214586128 U CN214586128 U CN 214586128U CN 202023240214 U CN202023240214 U CN 202023240214U CN 214586128 U CN214586128 U CN 214586128U
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Abstract
The utility model relates to a dry-type loose tube aerating device belongs to optical cable and makes technical field. The inflatable base is provided with a central hole, an inlet die unit is arranged at the inlet end of the inflatable base, and an inflatable die unit is arranged at the outlet end of the inflatable base; an annular conical gap is formed between the outer wall of the outlet end of the inlet die unit and the inner wall of the central hole, an air inlet is formed in the inflatable base, and the air inlet is communicated with the annular gap to form an air cavity; the air inlet is connected with an air source device; the inlet die unit is provided with an optical fiber leading-in channel, the inflatable die unit is provided with an optical fiber leading-out channel, the optical fiber leading-in channel and the optical fiber leading-out channel are concentrically arranged, and the optical fiber leading-out channel is respectively communicated with the air cavity and the optical fiber leading-in channel. This application not only the air current is unobstructed, has reduced the air current to the optic fibre bundle and the disturbance of the yarn that blocks water, and the yarn that blocks water moreover and the leading-in loose sleeve pipe that the optic fibre bundle can smoothly not have the scratch, has avoided optic fibre bundle and loose sleeve pipe wall adhesion.
Description
Technical Field
The utility model relates to a dry-type loose tube aerating device belongs to optical cable and makes technical field.
Background
The minimum optical fiber unit of the conventional outdoor optical cable is a loose tube, the production process of the loose tube is to extrude and mould a layer of high polymer material outside optical fibers (bundles), and water-blocking ointment is filled among the optical fibers and the high polymer material. The water-blocking ointment has the main functions of longitudinally blocking water, preventing the optical fiber from being adhered to the wall of the loose tube during production and ensuring the roundness of the loose tube. However, long-term application shows that the base oil in the water-blocking ointment volatilizes along with the passage of time to influence the transmission performance of the optical fiber; the ointment can be accumulated at the lower end of the optical cable in the optical cable which is vertically arranged, and water resistance at the upper end of the optical cable is influenced; the ointment wastes time and labor when the optical cable is connected, and is not environment-friendly. Therefore, dry water-blocking loose tubes have been proposed and developed rapidly. The dry-type water-blocking loose tube is called a dry-type loose tube for short, generally uses water-blocking materials such as water-blocking yarn or water-blocking powder and the like, and has the advantages of environmental protection, no pollution, quick connection, cleanness and the like.
Although the water-blocking performance of the dry loose tube is ensured by the dry water-blocking material; however, how to prevent the adhesion between the optical fiber and the wall of the dry loose tube needs to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a dry-type loose tube aerating device is provided to above-mentioned prior art can smoothly guide optic fibre and the leading-in loose tube of yarn that blocks water, avoids optic fibre and the adhesion of loose tube pipe wall.
The utility model provides a technical scheme that above-mentioned problem adopted does: a dry-type loose tube inflation device comprises an inflation base, wherein the inflation base is provided with a horizontal central hole, an inlet die unit is arranged at the inlet end of the inflation base, and an inflation die unit is arranged at the outlet end of the inflation base; an annular conical gap is formed between the outer wall of the outlet end of the inlet die unit and the inner wall of the central hole, an air inlet is formed in the inflation base, and the air inlet is communicated with the annular conical gap to form an air cavity; the air inlet is connected with an air source device, and air flows into the air cavity through the air inlet; the inlet die unit is provided with an optical fiber leading-in channel, the inflatable die unit is provided with an optical fiber leading-out channel, the optical fiber leading-in channel and the optical fiber leading-out channel are concentrically arranged, the optical fiber leading-out channel is respectively communicated with the air cavity and the optical fiber leading-in channel, the optical fiber bundle and the water-blocking yarn are led into the optical fiber leading-out channel through the optical fiber leading-in channel, and the air is led into the optical fiber leading-out channel through the air cavity, so that the optical fiber bundle, the water-blocking yarn and the air are led to the loose tube together.
The inlet die unit comprises an inlet die and a sealing cover plate, the outlet end of the inlet die is arranged in the sealing cover plate, the outlet end of the inlet die is provided with a fiber guide pipe, and the inlet die is fixedly connected with the sealing cover plate through threads so that the fiber guide pipe is embedded in the sealing cover plate; the center of the inlet die is provided with a first fiber penetrating hole, the center of the sealing cover plate is provided with a second fiber penetrating hole, and the first fiber penetrating hole, the central hole of the fiber guide pipe and the second fiber penetrating hole are communicated to form the optical fiber leading-in channel.
The outlet end of the fiber guide pipe is also provided with an extension section, and the extension section extends into the inflation die unit.
The inlet end of the inlet die is provided with a circular arc chamfer.
The outlet end of the sealing cover plate is provided with a conical boss, and the taper of the central hole is smaller than that of the boss.
The inflatable mold unit comprises an inflatable mold and a connecting pipe, the inlet end of the connecting pipe is arranged in the inflatable base, the inlet end of the inflatable mold is arranged at the outlet end of the connecting pipe, and the outlet of the inflatable mold is connected with the needle pipe; and a third fiber penetrating hole is formed in the center of the inflation die, and the central hole of the connecting pipe is communicated with the third fiber penetrating hole and the central hole of the needle tube to form the optical fiber leading-out channel.
The aperture of the inflation die is in two sections, and the aperture is reduced section by section.
The aperture of the first fiber penetrating hole is smaller than that of the fiber guide tube, and the aperture of the first fiber penetrating hole is smaller than that of the needle tube; the aperture of the fiber guide tube is matched with the number of optical fiber cores.
Compared with the prior art, the utility model has the advantages of: the utility model provides a dry-type loose tube aerating device, uses through the cooperation of entrance mould, fiber guide pipe and aerify the mould to the design of special air cavity is added, guarantees the seal of device, makes atmospheric pressure stable, the air current unobstructed, has reduced the disturbance of air current to optic fibre bundle and yarn that blocks water. The holes formed by the entrance mould, the fiber guide pipe, the sealing cover plate, the inflatable base, the connecting pipe and the inflatable mould are through holes and are concentrically arranged, so that the water-blocking yarns and the optical fiber bundles can be smoothly led into the loose sleeve without scratches, and the air flow is led into the loose sleeve together, thereby avoiding the adhesion of the optical fiber bundles and the wall of the loose sleeve.
Drawings
Fig. 1 is a schematic view of a dry loose tube inflation device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
in the figure, 1 optical fiber bundle, 2 water-blocking yarn, 3 inlet die, 3.1 first fiber penetrating hole, 4 sealing cover plate, 4.1 second fiber penetrating hole, 5 fiber guide pipe, 5.1 extension section, 6 inflating base, 6.1 annular conical gap, 6.2 step, 7 connecting pipe, 8 inflating die, 8.1 third fiber penetrating hole, 8.2 needle tube and 9 air inlet.
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 dry-type loose tube inflation device in this embodiment includes an inflation base 6, the inflation base 6 has a horizontal tapered central hole, a large diameter end of the tapered central hole is an inlet end of the inflation base 6, and a small diameter end of the tapered central hole is an outlet end of the inflation base 6. An inlet die unit is arranged at the inlet end of the inflatable base 6, the outlet end of the inlet die unit is arranged in the conical central hole, and the inlet die unit and the conical central hole are fixedly connected through threads. The inflatable base 6 is provided with a step 6.2 which is fixed on the slide rail at the inlet of the machine head through the step 6.2. An outlet end of the inflatable base 6 is provided with an inflatable module unit, an inlet end of the inflatable module unit is arranged in the inflatable base 6, and the inflatable module unit and the inflatable base are fixedly connected through threads. An annular conical gap 6.1 is formed between the outer wall of the outlet end of the inlet die unit and the inner wall of the central hole, an air inlet 9 is formed in the inflatable base 6, and the air inlet 9 is communicated with the annular conical gap 6.1 to form an air cavity. The air inlet 9 is connected with the air source device in a thread sealing way, and the air flows to the air cavity through the inlet of the air inlet 9. The inlet die unit is provided with an optical fiber leading-in channel, the inflatable die unit is provided with an optical fiber leading-out channel, the optical fiber leading-in channel and the optical fiber leading-out channel are concentrically arranged, the optical fiber leading-out channel is respectively communicated with the air cavity and the optical fiber leading-in channel, the optical fiber bundle 1 and the water-blocking yarn 2 are led into the optical fiber leading-out channel through the optical fiber leading-in channel, and air is led into the optical fiber leading-out channel through the air cavity, so that the optical fiber bundle 1, the water-blocking yarn 2 and the air lead to the loose tube together.
The inlet die unit comprises an inlet die 3 and a sealing cover plate 4, the outlet end of the inlet die 3 is arranged in the sealing cover plate 4, the outlet end of the inlet die 3 is provided with a fiber guide pipe 5, and the inlet die 3 is fixedly connected with the sealing cover plate 4 through threads, so that the fiber guide pipe 5 is embedded in the sealing cover plate 4. The center of the inlet die 3 is provided with a first fiber penetrating hole 3.1, the center of the sealing cover plate 4 is provided with a second fiber penetrating hole 4.1, the first fiber penetrating hole 3.1 is communicated with the center hole of the fiber guide pipe 5 and the second fiber penetrating hole 4.1, and the first fiber penetrating hole, the center hole of the fiber guide pipe 5 and the second fiber penetrating hole are concentrically arranged to form an optical fiber leading-in channel. The outlet end of the fiber guide pipe 5 is also provided with an extension section 5.1, and the extension section 5.1 extends into the inflation module unit. The fiber guide pipe 5 is nested between the inlet die 3 and the sealing cover plate 4, so that the disturbance of direct air flow to the optical fiber bundle and the water-blocking yarns is reduced, and the threading is facilitated.
The inlet end of the inlet die 3 is provided with an R4 arc chamfer, so that the optical fiber bundle 1 and the water blocking yarn 2 can be conveniently introduced, and the scratch of the optical fiber bundle 1 and the water blocking yarn 2 on the inlet die 3 is reduced.
The inflatable mould unit comprises an inflatable mould 8 and a connecting pipe 7, the inlet end of the connecting pipe 7 is arranged in the inflatable base 6, and the inlet end are in threaded connection. The inlet end of the inflation die 8 is arranged at the outlet end of the connecting pipe 7, and the inlet end and the outlet end are in threaded connection. The outlet end of the air inflation die 8 is provided with a needle tube 8.2. The center of the inflation die 8 is provided with a third fiber penetrating hole 8.1, the center hole of the connecting pipe 7 is communicated with the third fiber penetrating hole 8.1 and the center hole of the needle tube 8.2, and the three are concentrically arranged to form an optical fiber leading-out channel. The aperture of the inflatable mold 8 is in two sections: the third fiber passing hole 8.1 and the needle tube 8.2 have the aperture gradually reduced, namely the aperture of the third fiber passing hole 8.1 is larger than that of the needle tube 8.2. The diameter of the third fiber penetrating hole 8.1 is fixed, and the diameter of the needle tube 8.2 is adjusted according to the number of the optical fiber cores of the sleeve and the inner diameter of the sleeve.
The outlet end of the sealing cover plate 4 is provided with a conical boss, the taper of the central hole is smaller than that of the boss, and the sealing cover plate 4 is in left-handed threaded connection with the inflating base 6, so that the stability of air flow in the air cavity is ensured.
When the mould is matched, the aperture of the first fiber penetrating hole 3.1 of the inlet mould is smaller than that of the fiber guide pipe 5, and the aperture of the first fiber penetrating hole 3.1 of the inlet mould 3 is smaller than that of the needle pipe 8.2. The aperture of the fiber guide tube 5 is changed along with the number of optical fiber cores, the aperture of 1.0mm corresponds to 1-6 core conventional fibers, the aperture of 1.5mm corresponds to 7-12 core conventional fibers, the aperture of 2.0mm corresponds to 13-18 core conventional fibers, and the aperture of 2.5mm corresponds to 19-24 core conventional fibers.
The holes formed in the entrance mould 3, the fiber guide pipe 5, the sealing cover plate 4, the inflatable base 6, the connecting pipe 7 and the inflatable mould 8 are through holes which are concentrically arranged, so that the water-blocking yarns and the optical fiber bundles can be smoothly led into the loose sleeve without scratches, and the airflow is led into the loose sleeve together, thereby avoiding the adhesion of the optical fiber bundles and the wall of the loose sleeve.
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 (8)
1. A dry-type loose tube aerating device which characterized in that: the inflatable device comprises an inflatable base (6), wherein the inflatable base (6) is provided with a horizontal central hole, an inlet die unit is arranged at the inlet end of the inflatable base (6), and an inflatable die unit is arranged at the outlet end of the inflatable base (6); an annular conical gap (6.1) is formed between the outer wall of the outlet end of the inlet die unit and the inner wall of the central hole, an air inlet (9) is formed in the inflating base (6), and the air inlet (9) is communicated with the annular conical gap (6.1) to form an air cavity; the air inlet (9) is connected with an air source device, and air flows into the air cavity through the inlet of the air inlet (9); the inlet die unit is provided with an optical fiber leading-in channel, the inflatable die unit is provided with an optical fiber leading-out channel, the optical fiber leading-in channel and the optical fiber leading-out channel are concentrically arranged, the optical fiber leading-out channel is respectively communicated with the air cavity and the optical fiber leading-in channel, the optical fiber bundle (1) and the water-blocking yarn (2) pass through the optical fiber leading-in channel to be led into the optical fiber leading-out channel, and the air passes through the air cavity to be led into the optical fiber leading-out channel, so that the optical fiber bundle, the water-blocking yarn and the air are led into the loose tube together.
2. The dry loose tube inflation device of claim 1, wherein: the inlet die unit comprises an inlet die (3) and a sealing cover plate (4), the outlet end of the inlet die (3) is arranged in the sealing cover plate (4), the outlet end of the inlet die (3) is provided with a fiber guide pipe (5), and the inlet die (3) is fixedly connected with the sealing cover plate (4) in a threaded manner, so that the fiber guide pipe (5) is embedded in the sealing cover plate (4); the center of the entrance mould (3) is provided with a first fiber penetrating hole (3.1), the center of the sealing cover plate (4) is provided with a second fiber penetrating hole (4.1), and the center holes of the first fiber penetrating hole (3.1) and the fiber guide pipe (5) are communicated with the second fiber penetrating hole (4.1) to form the optical fiber guide-in channel.
3. A dry loose tube inflation device as claimed in claim 2, wherein: the outlet end of the fiber guide pipe (5) is also provided with an extension section (5.1), and the extension section (5.1) extends into the inflation die unit.
4. A dry loose tube inflation device as claimed in claim 2, wherein: the inlet end of the inlet die (3) is provided with an arc chamfer.
5. A dry loose tube inflation device as claimed in claim 2, wherein: the outlet end of the sealing cover plate (4) is provided with a conical boss, and the taper of the central hole is smaller than that of the boss.
6. A dry loose tube inflation device as claimed in claim 2, wherein: the inflatable mould unit comprises an inflatable mould (8) and a connecting pipe (7), the inlet end of the connecting pipe (7) is arranged in the inflatable base (6), the inlet end of the inflatable mould (8) is arranged at the outlet end of the connecting pipe (7), and the outlet of the inflatable mould (8) is connected with a needle tube (8.2); and a third fiber penetrating hole (8.1) is formed in the center of the inflation die (8), and a center hole of the connecting pipe (7) is communicated with the third fiber penetrating hole (8.1) and a center hole of the needle tube (8.2) to form the optical fiber leading-out channel.
7. The dry loose tube inflation device of claim 5, wherein: the aperture of the inflation die (8) is in two sections, and the aperture is reduced section by section.
8. The dry loose tube inflation device of claim 6, wherein: the aperture of the first fiber penetrating hole (3.1) is smaller than that of the fiber guide pipe (5), and the aperture of the first fiber penetrating hole (3.1) is smaller than that of the needle pipe (8.2); the aperture of the fiber guide tube (5) is matched with the number of optical fiber cores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023240214.6U CN214586128U (en) | 2020-12-29 | 2020-12-29 | Dry-type loose tube aerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023240214.6U CN214586128U (en) | 2020-12-29 | 2020-12-29 | Dry-type loose tube aerating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214586128U true CN214586128U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023240214.6U Active CN214586128U (en) | 2020-12-29 | 2020-12-29 | Dry-type loose tube aerating device |
Country Status (1)
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|---|---|
| CN (1) | CN214586128U (en) |
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2020
- 2020-12-29 CN CN202023240214.6U patent/CN214586128U/en active Active
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