CN108689594B - Optical fiber drawing process - Google Patents
Optical fiber drawing process Download PDFInfo
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- CN108689594B CN108689594B CN201810589543.XA CN201810589543A CN108689594B CN 108689594 B CN108689594 B CN 108689594B CN 201810589543 A CN201810589543 A CN 201810589543A CN 108689594 B CN108689594 B CN 108689594B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
- C03C25/1065—Multiple coatings
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/48—Coating with two or more coatings having different compositions
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/62—Surface treatment of fibres or filaments made from glass, minerals or slags by application of electric or wave energy; by particle radiation or ion implantation
- C03C25/6206—Electromagnetic waves
- C03C25/6226—Ultraviolet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention discloses an optical fiber drawing process, which comprises the following steps: 1) a melt wire drawing step; 2) a shaping and cooling process; 3) primary coating process; 4) a primary curing process; 5) a secondary coating process; 6) a secondary curing process; the coating device is characterized in that the coating device comprises the same centralized feeding system in the step 3) and the step 5), the centralized feeding system comprises a feeding system and a feeding tank, the feeding system conveys the coating to the feeding tank through a pipeline, the feeding tank comprises a temperature control system, the temperature control system controls the temperature of the coating in the feeding tank to be constant, and the feeding tank conveys the coating to the coating device. According to the invention, the centralized feeding system is adopted to uniformly supply and convey the coating, so that the labor intensity of personnel is reduced, the production continuity is ensured, and meanwhile, the temperature control system is utilized to ensure that the temperature of the coating in the feeding tank is constant, and the viscosity of the coating entering the coating device is proper.
Description
The application is a divisional application with the application date of 2016, 03 and 31, the application number of 201610195952.2 and the name of 'optical fiber drawing process'.
Technical Field
The invention relates to the field of optical fiber production, in particular to an optical fiber drawing process.
Background
Optical fibers are short for optical fibers, and are fibers made of glass or plastic that can be used as a light conducting means. The optical fiber is composed of two layers of glass with different refractive indexes, the inner layer is an optical inner core, the diameter of the inner layer is several micrometers to dozens of micrometers, and the diameter of the outer layer is 0.1-0.2 mm. Typically, the refractive index of the core glass is 1% greater than that of the outer glass. According to the principle of refraction and total reflection of light, when the angle of light striking the interface of the inner core and the outer layer is larger than the critical angle for generating total reflection, the light can not pass through the interface and is totally reflected. Optical fibers are widely available in many types, and the required functions and properties vary depending on the application. But for cable tv and optical fiber for communications, the design and manufacturing principles are basically the same, such as: the loss is small; has certain bandwidth and small dispersion; the wiring is easy; the method is easy to be systematized; the reliability is high; the manufacture is simpler; low price and the like. The existing optical fiber production process comprises the working procedures of melt drawing, shaping and cooling, solidification, coating and the like.
In the prior art, in the coating process, each production line is provided with an independent coating material feeding system, and a resin coating raw barrel which is 10kg and is insulated to 50 ℃ is opened and poured into a feeding tank by manual operation. Because the coating is consumed quickly, operators are required to frequently convey the resin coating stored at the bottom layer to the top layer for replacement, and the feeding temperature of the coating is difficult to ensure; meanwhile, the work of carrying, unpacking, changing materials and the like greatly increases the labor amount and labor intensity of operators, and influences the working efficiency. An operator frequently detaches the sealing barrel cover of the large coating barrel and replaces the coating barrel, so that impurities are easily mixed and polluted, bubbles are easily generated in the replacement process, and further, the optical fiber is abnormal in production, the coating defect is generated, and waste products are caused; in addition, in severe cases, operators can replace two different coatings frequently, so that batch products are scrapped, the shutdown rate of a production line is increased, the yield is reduced, and the cost is increased. And if the change of coating is untimely, the coating in the coating bucket is not supplemented in time after empty, also can lead to the production line to break fine, or appear not coated optic fibre, lead to appearing useless fine, seriously influence assembly line continuation production.
Disclosure of Invention
The invention provides an optical fiber drawing process, which solves the defects that the existing optical fiber drawing process has high labor intensity of personnel, high operation risk, high possibility of error and difficult guarantee of coating feeding temperature.
In order to solve the problems, the invention discloses an optical fiber drawing process, which comprises the following steps:
1) a melting and wire drawing process: melting the prefabricated rod at 2200-2300 ℃, and drawing the prefabricated rod by means of self gravity;
2) shaping and cooling: the drooping silk threads are cooled and shaped through a shaping pipe, and then are further cooled through a cooling pipe;
3) primary coating procedure: delivering the coating material into a coating device through a centralized feeding system, wherein the coating device coats the coating material on the outer surface of the silk thread;
4) a primary curing process: curing the optical fiber coated with the coating by using ultraviolet curing equipment;
5) a secondary coating procedure: delivering the coating material into a coating device through a centralized feeding system, wherein the coating device coats the coating material on the outer surface of the silk thread;
6) a secondary curing process: curing the optical fiber coated with the coating by using ultraviolet curing equipment;
the coating device is characterized in that the coating device comprises the same centralized feeding system in the step 3) and the step 5), the centralized feeding system comprises a feeding system and a feeding tank, the feeding system conveys the coating to the feeding tank through a pipeline, the feeding tank comprises a temperature control system, the temperature control system controls the temperature of the coating in the feeding tank to be constant, and the feeding tank conveys the coating to the coating device. According to the invention, the centralized feeding system is adopted to uniformly supply and convey the coating, so that the labor intensity of personnel is reduced, the production continuity is ensured, and meanwhile, the temperature control system is utilized to ensure that the temperature of the coating in the feeding tank is constant, and the viscosity of the coating entering the coating device is proper.
Optionally, the feeding system includes a storage tank, one side of the storage tank is connected to a main pipeline, a pressure pump is arranged on the main pipeline, and the main pipeline is connected to the feeding pipeline through a control valve; the feeding pipeline is connected with a plurality of feeding tanks. The storage tank is arranged to be connected with the feeding tanks, so that coatings can be uniformly mixed, reloaded and beaten, and the service efficiency of the centralized feeding system is improved.
Optionally, the feeding tank includes a tank wall, the tank wall is hollow to form a cavity, hot water is filled in the cavity, the hot water in the cavity is connected with the heat exchange pipe through a pipeline, the hot water is introduced into the heat exchange pipe, and the hot water circularly flows between the heat exchange pipe and the cavity under the action of the water pump; the circulated hot water is heated to a constant temperature by a heater. The feeding tank is provided with a hot water circulating system, the structure is simple, the feeding tank is convenient to control the coating in the feeding tank at about 50 ℃ efficiently and stably, and the stirring is facilitated to remove bubbles at a higher temperature.
Optionally, the heat exchange tube is arranged in the feed tank, the heat exchange tube comprises a side tube and a bottom tube which are connected with each other, the side tube is arranged in parallel with the tank wall of the feed tank, the bottom tube is arranged in parallel with the tank bottom of the feed tank, and the side tube is densely folded and coiled into a rectangle. The heat exchange tubes with the tubes parallel to the tank wall and the bottom tubes parallel to the tank bottom structure are adopted, so that stirring of a stirring paddle in the feeding tank is facilitated, meanwhile, the side tubes are densely folded and coiled into a rectangle, the heat exchange area is large, and the heat exchange effect is good.
Optionally, the feeding tank is further provided with a blade-falling type stirring paddle, and the blade-falling type stirring paddle is driven by a driving motor. The falling-blade stirring paddle is adopted to be convenient for overturning the liquid at the bottom to the upper part of the material liquid, and the falling-blade stirring paddle is deep into the tank and is not easy to generate bubbles.
Optionally, a flow control valve is arranged on a pipeline between the heat exchange pipe and the cavity, the cavity is connected with a temperature tester, the flow control valve and the temperature tester are connected with a temperature control system, and the temperature control system controls the flow speed of hot water and further controls the temperature of the coating in the feeding tank. The temperature of the coating in each feeding tank is controlled by the temperature control system, so that unified monitoring and management are facilitated, labor intensity of operators is reduced, and operation errors are reduced.
Optionally, the feeding tank is connected with a feeding pipe, the feeding pipe is used for dropwise adding a defoaming agent, the defoaming agent is a polydimethylsiloxane defoaming agent, and the dropwise adding amount of the polydimethylsiloxane defoaming agent is 0.02ml-0.04 ml/L. The addition of a certain amount of defoaming agent is favorable for removing bubbles, the formation of micro bubbles is reduced, and the defoaming effect is further improved, so that the coating is uniformly coated on the surface of a drooping silk thread, the polydimethylsiloxane defoaming agent is convenient to dissolve in an organic solvent, and the defoaming effect on low-medium viscosity liquid is obvious.
Optionally, the coating inlet pipe and coating discharging pipe are connected to the feeding jar, be equipped with the opening on the side pipe wall of coating inlet pipe, be equipped with the bubble filter on the coating discharging pipe, coating discharging pipe end is equipped with the bubble apparatus. The opening is formed in the pipe wall of the upper side of the coating feeding pipe, so that bubbles brought in a feeding pipeline when the coating enters the feeding tank can be conveniently discharged, the bubble filter is arranged, the bubbles can be conveniently further removed, the bubble removing condition of the bubble can be conveniently monitored by the bubble measuring instrument, the occurrence of special conditions is prevented, the influence of the bubbles on subsequent production procedures is reduced, and the defective rate is reduced to the maximum extent.
Compared with the prior art, the technical scheme has the following advantages:
the invention adopts the centralized feeding system to uniformly supply and convey the coating, reduces the labor intensity of personnel, ensures the production continuity, simultaneously utilizes the temperature control system to ensure the constant temperature of the coating in the feeding tank and ensures the proper viscosity of the coating entering the coating device.
In addition, the material storage tank is connected with the plurality of feeding tanks, so that the resin coatings can be uniformly mixed, reloaded and beaten, and the service efficiency of the centralized feeding system is improved. The feeding tank is provided with a hot water circulation system, the structure is simple, the feeding tank is convenient to control the coating in the feeding tank at about 50 ℃ efficiently and stably, and the stirring of the stirring paddle is facilitated to remove bubbles at a higher temperature. The heat exchange tubes with the tubes parallel to the tank wall and the bottom tubes parallel to the tank bottom structure are adopted, so that the stirring in the feeding tank is facilitated, and meanwhile, the side tubes are densely folded and coiled into a rectangle, so that the heat exchange area is large, and the heat exchange effect is good. The falling-blade stirring paddle is adopted to be convenient for overturning the liquid at the bottom to the upper part of the material liquid, and the falling-blade stirring paddle is deep into the tank and is not easy to generate bubbles.
The temperature of the coating in each feeding tank is controlled by the temperature control system, so that unified monitoring and management are facilitated, labor intensity of operators is reduced, and operation errors are reduced. The addition of a certain amount of defoaming agent is beneficial to removing bubbles, the formation of micro bubbles is reduced, and the defoaming effect is further improved, so that the coating is uniformly coated on the surface of a drooping silk thread, the polydimethylsiloxane defoaming agent is convenient to dissolve in an organic solvent, and the defoaming effect on low-viscosity liquid is obvious. The opening is formed in the pipe wall of the upper side of the coating feeding pipe, so that bubbles brought in a feeding pipeline when the coating enters the feeding tank can be conveniently discharged, the bubble filter is arranged, the bubbles can be conveniently further removed, the bubble removing condition of the bubble can be conveniently monitored by the bubble measuring instrument, the occurrence of special conditions is prevented, the influence of the bubbles on subsequent production procedures is reduced, and the defective rate is reduced to the maximum extent.
The invention has simple and effective structure and low cost, and accords with the management idea of lean production.
Drawings
FIG. 1 is a process flow diagram of an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a centralized feeding system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the structure of a feed tank of an embodiment of the present invention;
FIG. 4 is a schematic diagram of a side tube arrangement according to an embodiment of the present invention.
1. The system comprises a feeding system, 2, a feeding tank, 3, a temperature control system, 4, a material storage tank, 5, a pressure pump, 6, a main pipeline, 7, a feeding pipeline, 8, a coating material feeding pipe, 9, a coating material discharging pipe, 10, a bubble filter, 11, a bubble tester, 21, a cavity, 22, a heat exchange pipe, 23, a falling vane type stirring paddle, 24, a flow control valve, 25, a temperature tester, 26, a feeding pipe, 27, a water pump, 28, a heater, 29, a driving motor, 31, a return pipeline, 32, a booster pump, 33, a three-way valve, 34, a temperature sensor, 81, an opening, 221, a side pipe, 222 and a bottom pipe.
Detailed Description
The technical solution of the present invention is described in detail and fully with reference to the accompanying drawings.
The invention discloses an optical fiber drawing process, which comprises the following steps (shown in figure 1):
1) a melting and wire drawing process: melting the prefabricated rod at 2200-2300 ℃, and drawing the prefabricated rod by means of self gravity;
2) shaping and cooling: the drooping silk threads are cooled and shaped through a shaping pipe, and then are further cooled through a cooling pipe;
3) primary coating procedure: delivering the coating material into a coating device through a centralized feeding system, wherein the coating device coats the coating material on the outer surface of the silk thread;
4) a primary curing process: curing the optical fiber coated with the coating by using ultraviolet curing equipment;
5) a secondary coating procedure: delivering the coating material into a coating device through a centralized feeding system, wherein the coating device coats the coating material on the outer surface of the silk thread;
6) a secondary curing process: the coated optical fiber is cured by an ultraviolet curing apparatus.
Example (b): the embodiment of the invention discloses a centralized feeding system (shown in attached figures 2, 3 and 4), which can be applied to the step 3) and the step 5), wherein the centralized feeding system comprises a feeding system 1 and a feeding tank 2, the feeding system conveys a coating 1 to the feeding tank 2 through a pipeline, the feeding tank 2 comprises a temperature control system 3, the temperature control system 3 controls the temperature of the coating in the feeding tank 2 to be constant, and the feeding tank 2 conveys the coating to a coating device. According to the invention, the centralized feeding system is adopted to uniformly supply and convey the coating, so that the labor intensity of personnel is reduced, the production continuity is ensured, and meanwhile, the temperature control system is utilized to ensure that the temperature of the coating in the feeding tank is constant, and the viscosity of the coating entering the coating device is proper.
The feeding system 1 comprises a storage tank 4, one side of the storage tank 4 is connected with a main pipeline 5, a pressure pump 6 is arranged on the main pipeline 5, and the main pipeline 5 is connected with a feeding pipeline 7 through a control valve; the feeding pipeline 7 is connected with a plurality of feeding tanks 2. The material storage tank 4 is arranged to be connected with the plurality of feeding tanks 2, so that the resin coatings can be uniformly mixed and changed. In an embodiment, the control valve is a three-way valve 33; the main line 6 connects return line 31 through three-way valve 33, return line 31 backward flow is connected storage tank 4, still connects booster pump 32 on its return line 31, through setting up return line 31, and the coating of being convenient for is fed, is mixed, reduces the material loss.
The feeding tank 2 comprises a tank wall, the tank wall is hollow to form a cavity 21, hot water is filled in the cavity 21, the hot water in the cavity 21 is connected with a heat exchange pipe 22 through a pipeline, the heat exchange pipe 22 is internally communicated with the hot water, and the hot water circularly flows between the heat exchange pipe 22 and the cavity 21 under the action of a water pump 27; the circulated hot water is heated to a constant temperature by the heater 28. The feeding tank 2 is provided with a hot water circulating system, the structure is simple, the feeding tank is convenient to control the coating in the feeding tank at about 50 ℃ efficiently and stably, and the stirring is facilitated to remove bubbles at a higher temperature.
The heat exchange tube 22 is arranged in the feed tank 2, the heat exchange tube 22 comprises a side tube 221 and a bottom tube 222 which are connected with each other, the side tube 221 is arranged in parallel with the tank wall of the feed tank 2, the bottom tube 222 is arranged in parallel with the tank bottom of the feed tank 2, and the side tube 221 is densely folded and coiled into a rectangle. The heat exchange tube 22 with the tube parallel to the wall of the tank and the bottom tube 222 parallel to the bottom structure of the tank is adopted, so that the material is conveniently stirred in the feeding tank 2, and meanwhile, the side tubes 221 are densely folded and coiled into a rectangle, so that the heat exchange area is large, and the heat exchange effect is good.
The feeding tank 2 is also provided with a blade-falling type stirring paddle 23, and the blade-falling type stirring paddle 23 is driven by a driving motor 29. The falling-blade stirring paddle 23 is adopted to facilitate the liquid at the bottom to be stirred to the upper part of the material liquid, and the falling-blade stirring paddle 23 is inserted into the tank, so that bubbles are not easy to generate. In this embodiment, the rotation speed of the falling blade type stirring paddle 23 is controlled to 5 to 10 revolutions per minute in order to reduce the effect of the liquid mixed with the stirring gas.
Be equipped with flow control valve 24 on the pipeline between heat exchange pipe 22 and the cavity 21, temperature tester 25 is connected to cavity 21, temperature control system 3 is connected to flow control valve 24 and temperature tester 25, the hydrothermal velocity of flow of temperature control system 3 control and then the temperature of coating in the control feed tank 2. The temperature of the coating in each feeding tank 2 is controlled by the temperature control system 3, so that unified monitoring and management are facilitated, labor intensity of operators is reduced, and operation errors are reduced. In this embodiment, the inner wall of the feeding tank 2 is provided with a temperature sensor 34, the temperature sensor 34 is linked with the temperature control system 3, and the temperature of the coating in this embodiment is controlled to be 40-60 ℃.
The feeding tank 2 is connected with a feeding pipe 26, the feeding pipe 26 is used for dropwise adding a defoaming agent, the defoaming agent is a polydimethylsiloxane defoaming agent, and the dropwise adding amount of the polydimethylsiloxane defoaming agent is 0.02ml-0.04 ml/L. The addition of a certain amount of defoaming agent is beneficial to removing bubbles, the formation of micro bubbles is reduced, and the defoaming effect is further improved, so that the coating is uniformly coated on the surface of a drooping silk thread, the polydimethylsiloxane defoaming agent is convenient to dissolve in an organic solvent, and the defoaming effect on low-viscosity liquid is obvious. In this example, a composite polydimethylsiloxane defoamer was used.
The coating inlet pipe 8 and the coating discharging pipe 9 are connected to feed tank 2, be equipped with opening 81 on the side pipe wall of coating inlet pipe 8, be equipped with bubble filter 10 on the coating discharging pipe 9, coating discharging pipe end is equipped with bubble apparatus 11. The upper side pipe wall of the coating feeding pipe 8 is provided with an opening, so that bubbles brought in the feeding pipeline 7 when the coating enters the feeding tank 2 can be discharged conveniently, the bubble filter 10 is arranged to further remove the bubbles conveniently, the bubble determinator 11 is arranged to monitor the removal condition of the bubbles conveniently so as to prevent special conditions, the influence of the bubbles on subsequent production procedures is reduced, and the defective rate is reduced to the maximum extent.
When the feeding system is implemented in the embodiment of the invention, the newly added materials are uniformly mixed by the feeding system through the return pipeline and the booster pump. And closing the return pipeline, and conveying the coating to each feeding tank by the feeding system through the main pipeline and the feeding pipeline. The heater heats hot water in the feeding tank, and the temperature control system controls the coating temperature in the feeding tank by controlling the flow of the circulating hot water; after the feeding tank is filled with the coating, the driving motor drives the falling-blade type stirring paddle to stir slowly, and the defoaming agent is dripped according to the amount of the coating in the feeding tank. The discharged coating is further subjected to bubble elimination through a bubble filter, and the number of bubbles contained in the final discharged coating is monitored through a bubble measuring instrument on a coating discharging pipe.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (3)
1. An optical fiber drawing process, characterized by comprising the steps of:
primary coating procedure: delivering the coating material into a coating device through a centralized feeding system, wherein the coating device coats the coating material on the outer surface of the silk thread;
a primary curing process: curing the optical fiber coated with the coating by using ultraviolet curing equipment;
a secondary coating procedure: delivering the coating material into a coating device through a centralized feeding system, wherein the coating device coats the coating material on the outer surface of the silk thread;
a secondary curing process: curing the optical fiber coated with the coating by using ultraviolet curing equipment;
the primary coating process and the secondary coating process are provided with the same centralized feeding system, the centralized feeding system comprises a feeding system and a feeding tank, the feeding system conveys the coating to the feeding tank through a pipeline, the feeding tank comprises a temperature control system, the temperature control system controls the temperature of the coating in the feeding tank to be constant, and the feeding tank conveys the coating to a coating device;
the feeding system comprises a storage tank, one side of the storage tank is connected with a main pipeline, a pressure pump is arranged on the main pipeline, and the main pipeline is connected with a feeding pipeline through a control valve; the feeding pipeline is connected with a plurality of feeding tanks;
the feeding tank comprises a tank wall, the tank wall is hollow to form a cavity, hot water is filled in the cavity, the hot water in the cavity is connected with a heat exchange pipe through a pipeline, the hot water is introduced into the heat exchange pipe, and the hot water circularly flows between the heat exchange pipe and the cavity under the action of a water pump; the circulated hot water is heated to a constant temperature by a heater;
the heat exchange tube is arranged in the feeding tank and comprises a side tube and a bottom tube which are mutually connected, the side tube is arranged in parallel with the wall of the feeding tank, the bottom tube is arranged in parallel with the bottom of the feeding tank, and the side tube is densely folded and coiled into a rectangle;
a flow control valve is arranged on a pipeline between the heat exchange pipe and the cavity, the cavity is connected with a temperature tester, the flow control valve and the temperature tester are connected with a temperature control system, and the temperature control system controls the flow rate of hot water so as to control the temperature of the coating in the feeding tank;
the feeding tank is connected with a feeding pipe, the feeding pipe is used for dropwise adding a defoaming agent, the defoaming agent is a polydimethylsiloxane defoaming agent, and the dropwise adding amount of the polydimethylsiloxane defoaming agent is 0.02-0.04 ml/L.
2. The optical fiber drawing process according to claim 1, wherein the feed tank is further provided with a paddle blade, and the paddle blade is driven by a driving motor.
3. The optical fiber drawing process according to claim 1, wherein the feed tank is connected to a paint feed pipe and a paint discharge pipe, an opening is formed in the upper pipe wall of the paint feed pipe, a bubble filter is arranged on the paint discharge pipe, and a bubble tester is arranged at the tail end of the paint discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810589543.XA CN108689594B (en) | 2016-03-31 | 2016-03-31 | Optical fiber drawing process |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810589543.XA CN108689594B (en) | 2016-03-31 | 2016-03-31 | Optical fiber drawing process |
| CN201610195952.2A CN105859121B (en) | 2016-03-31 | 2016-03-31 | Drawing optical fibers technique |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610195952.2A Division CN105859121B (en) | 2016-03-31 | 2016-03-31 | Drawing optical fibers technique |
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| CN108689594A CN108689594A (en) | 2018-10-23 |
| CN108689594B true CN108689594B (en) | 2020-12-22 |
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| CN201810589543.XA Active CN108689594B (en) | 2016-03-31 | 2016-03-31 | Optical fiber drawing process |
| CN201610195952.2A Active CN105859121B (en) | 2016-03-31 | 2016-03-31 | Drawing optical fibers technique |
| CN201810341195.4A Active CN108545926B (en) | 2016-03-31 | 2016-03-31 | Optical fiber drawing process |
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| CN201610195952.2A Active CN105859121B (en) | 2016-03-31 | 2016-03-31 | Drawing optical fibers technique |
| CN201810341195.4A Active CN108545926B (en) | 2016-03-31 | 2016-03-31 | Optical fiber drawing process |
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| CN107311474B (en) * | 2017-05-27 | 2019-12-31 | 杭州富通通信技术股份有限公司 | Optical fiber deuterium processing system |
| CN108103590A (en) * | 2018-01-26 | 2018-06-01 | 江苏南方光纤科技有限公司 | The offline feeding system of coating |
| CN111138092B (en) * | 2019-12-20 | 2022-03-04 | 杭州富通通信技术股份有限公司 | Optical fiber production process |
| US12012358B2 (en) | 2020-06-19 | 2024-06-18 | Corning Incorporated | Method of applying coating liquid to an optical fiber |
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| CN101852886A (en) * | 2009-03-31 | 2010-10-06 | 中国电子科技集团公司第二十三研究所 | High anti-damage energy transfer optical fiber and manufacturing method |
| CN102531411A (en) * | 2012-03-09 | 2012-07-04 | 江苏通鼎光电股份有限公司 | Feeding system suitable for large-sized high speed continuous wiredrawing |
| CN202519161U (en) * | 2012-03-09 | 2012-11-07 | 江苏通鼎光电股份有限公司 | Feeding system suitable for large-scale high-speed continuous wiredrawing |
| CN203657243U (en) * | 2014-01-07 | 2014-06-18 | 陈永峰 | Separated heat pipe flat plate solar water heater |
| CN204237709U (en) * | 2014-11-14 | 2015-04-01 | 江苏南方光纤科技有限公司 | A kind of optical fiber coating feed system |
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| JP2000001341A (en) * | 1998-06-09 | 2000-01-07 | Yazaki Corp | Resin coating device for optical fiber |
| CN103699050B (en) * | 2013-12-17 | 2016-06-29 | 中天科技光纤有限公司 | A kind of fibre coating diameter automatic control system and control method thereof |
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- 2016-03-31 CN CN201810589543.XA patent/CN108689594B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852886A (en) * | 2009-03-31 | 2010-10-06 | 中国电子科技集团公司第二十三研究所 | High anti-damage energy transfer optical fiber and manufacturing method |
| CN102531411A (en) * | 2012-03-09 | 2012-07-04 | 江苏通鼎光电股份有限公司 | Feeding system suitable for large-sized high speed continuous wiredrawing |
| CN202519161U (en) * | 2012-03-09 | 2012-11-07 | 江苏通鼎光电股份有限公司 | Feeding system suitable for large-scale high-speed continuous wiredrawing |
| CN203657243U (en) * | 2014-01-07 | 2014-06-18 | 陈永峰 | Separated heat pipe flat plate solar water heater |
| CN204237709U (en) * | 2014-11-14 | 2015-04-01 | 江苏南方光纤科技有限公司 | A kind of optical fiber coating feed system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105859121B (en) | 2018-06-26 |
| CN108689594A (en) | 2018-10-23 |
| CN108545926A (en) | 2018-09-18 |
| CN105859121A (en) | 2016-08-17 |
| CN108545926B (en) | 2020-09-25 |
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