Temporary feeding device for optical fiber drawing coating

Abstract

The utility model relates to a feeding device, in particular to a temporary feeding device for optical fiber drawing coating. The feeding device comprises a centralized feeding station, a pipe network and a plurality of drawing wire tank stations, wherein the centralized feeding station is connected with the plurality of drawing wire tank stations through the pipe network. According to the feeding device, after all the paint in the pipe network is discharged into one wire drawing line material tank station, the paint is switched, input into the other wire drawing line material tank station through the pipe network and then conveyed to the wire drawing tower, so that the paint is not easy to mix, and the adverse effect generated by wire drawing due to paint mixing can be effectively avoided. During conveying, conveying is conducted in a gravity and air pressure mode, the manual filling process is omitted, on one hand, the labor intensity is lowered, and on the other hand, thread trimming can be effectively avoided. The problems that an existing feeding system is prone to mixing in the coating switching process, and adverse effects are easily caused on wiredrawing generation are solved.

Description

Technical Field

[0001] The utility model relates to a feeding device, in particular to a temporary feeding device for optical fiber drawing coating. Background Art

[0002] Fiber optic coating, one of the primary raw materials in optical fiber production, is primarily composed of acrylic resin. Fiber optic manufacturers have numerous suppliers to choose from, helping to reduce the cost of raw materials for fiber drawing. The performance of new fiber optic coatings is generally unknown, and coating specifications remain unverified. Therefore, fiber optic manufacturers are extremely cautious when switching coatings. Large-scale changes are avoided, and small-batch testing is performed before switching between different manufacturers' coatings. Currently, most manufacturers manually add coating to the tank during the trial phase. A fully filled tank can typically sustain hundreds of kilometers of fiber drawing. When the tank is depleted, refilling the coating requires close proximity to the fiber. To prevent air bubbles from accidentally entering the coating during refilling, which could affect the coating distribution and, consequently, fiber quality, active "cuttering" (terminating the drawing process) is required. This "cuttering" process, after removing air bubbles and manually adding coating to the tank, is a tedious one. Furthermore, the increased frequency of "cuttering" results in a significant number of scrapped fibers, seriously impacting fiber quality.

[0003] Patent application number CN218475537U discloses a centralized feeding system comprising a paint bucket, a lifting assembly, and a paint pump. The paint bucket is mounted on the lifting assembly, which is raised and lowered to tilt the paint bucket. A liquid level sensor is inserted into the paint bucket, and a paint bucket outlet is formed at the bottom of the paint bucket. The paint bucket outlet is connected to the paint pump via a pipe. The lifting assembly, liquid level sensor, and paint pump are all electrically connected to a controller. This utility model uses a lifting assembly to lift the paint bucket. When the paint level in the paint bucket falls below the paint bucket outlet, a pneumatic cylinder is activated, which drives the paint bucket to tilt, tilting the paint toward the paint bucket outlet, thereby discharging more paint from the paint bucket outlet. This utility model increases paint utilization while preventing air from entering the paint bucket outlet and generating bubbles, which could affect the quality and strength of subsequent optical fibers. This improves product quality and reduces production costs, resulting in a highly practical system.

[0004] Because the centralized feeding system doesn't rely on manual addition, it can feed the entire fiber drawing line without cutting the wire. However, if the coating material is switched during the feeding process, the coating in the feed line cannot be discharged, and coatings of different brands can easily mix, resulting in adverse effects. Therefore, it is necessary to design a temporary feeding device for optical fiber drawing coatings to solve this problem. Summary of the Invention

[0005] The purpose of the utility model is to provide a temporary feeding device for optical fiber drawing coatings that can effectively avoid mixing of coatings of different brands and effectively reduce the adverse effects caused by coating mixing, in order to address the deficiencies of the existing technology.

[0006] The technical solution of the utility model is:

[0007] A temporary feeding device for optical fiber drawing coating includes a centralized feeding station, a pipeline network and a drawing line material tank station, and is characterized in that: the centralized feeding station is connected to multiple drawing line material tank stations through the pipeline network; the drawing line material tank station includes a transition material tank, a terminal material tank and an air pressure control port, the transition material tank is connected to the terminal material tank through a connecting pipe A, and the terminal material tank is connected to the drawing tower through a connecting pipe B; the top of the terminal material tank and the transition material tank are respectively provided with an air pressure control port.

[0008] One end of the connecting pipe A passes through the top of the transition tank and extends to the bottom of the transition tank, and the other end of the connecting pipe A is connected to the top of the terminal tank; a one-way valve is provided on the connecting pipe A above the transition tank, and a connecting valve is provided on the connecting pipe A between the one-way valve and the terminal tank; the end of the connecting pipe B passes through the top of the terminal tank and extends to the bottom of the terminal tank.

[0009] An air inlet valve is provided on the air pressure control port of the transition material tank, an exhaust port is provided on the air pressure control port between the air inlet valve and the transition material tank, and an exhaust valve is provided on the exhaust port.

[0010] Liquid level sensors are respectively provided on the tops of the terminal material tank and the transition material tank.

[0011] The centralized feeding station includes a weighing bracket, a support, a cylinder and a ton barrel. The weighing bracket is provided with a support. One end of the support is connected to the weighing bracket through a pin shaft, and the other end of the support is connected to the weighing bracket through a cylinder; the ton barrel is provided on the support.

[0012] The ton barrel is wrapped with a ton barrel heating belt.

[0013] Each leg of the weighing bracket is provided with a weighing sensor for weighing the ton barrel.

[0014] The pipe network includes a connecting pipe C, a bellows and a distributor. One end of the connecting pipe C is connected to the distributor through a bellows, and the distributor is connected to the top of the transition tank through branch pipes; the other end of the connecting pipe C is connected to the bottom of the ton barrel.

[0015] The connecting pipe C is provided with a main valve, the connecting pipe C between the main valve and the ton barrel is provided with a bypass port, and the bypass port is provided with a bypass valve.

[0016] The branch pipe is provided with a branch valve, and the branch pipe between the branch valve and the transition tank is provided with a feed valve.

[0017] The beneficial effects of the present invention are:

[0018] This temporary feeding device for optical fiber drawing coatings discharges all the coatings from the pipeline network into one drawing line tank station, then switches the coatings and feeds them through the pipeline network to the next drawing line tank station for delivery to the drawing tower. This prevents the coatings from mixing, effectively preventing the adverse effects of coating mixing on fiber drawing. Delivery is done by gravity and air pressure, eliminating the need for manual refilling, reducing labor intensity while effectively preventing "wire shearing." This solves the problem of existing feeding systems where coatings easily mix when switching, which can adversely affect fiber drawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a structural diagram of the wire drawing material tank station of the utility model;

[0021] Figure 3 This is a structural diagram of the centralized feeding station of the utility model;

[0022] Figure 4 This is a schematic diagram of the tilted state of the ton barrel of the utility model;

[0023] Figure 5 It is a structural diagram of the pipe network of the utility model.

[0024] In the figure: 1. Transition tank, 2. Terminal tank, 3. Air pressure control port, 4. Connecting pipe A, 5. Connecting pipe B, 6. Drawing tower, 7. One-way valve, 8. Connecting valve, 9. Inlet valve, 10. Exhaust port, 11. Exhaust valve, 12. Liquid level sensor, 13. Weighing bracket, 14. Support, 15. Cylinder, 16. Ton barrel, 17. Ton barrel heating belt, 18. Weighing sensor, 19. Connecting pipe C, 20. Bellows, 21. Distributor, 22. Branch pipe, 23. Main valve, 24. Bypass port, 25. Bypass valve, 26. Branch valve, 27. Feed valve. DETAILED DESCRIPTION

[0025] The temporary feeding device for optical fiber drawing coating includes a centralized feeding station, a pipeline network and a drawing line material tank station. The centralized feeding station is connected to multiple drawing line material tank stations through the pipeline network. Its purpose is to be able to transport different coatings to the drawing tower through different drawing line material tank stations through the pipeline network when switching coatings at the centralized feeding station, thereby isolating different coatings to avoid mixing between the coatings and causing adverse effects on drawing generation.

[0026] The wire drawing line tank station includes a transition tank 1, a terminal tank 2, and an air pressure control port 3. The transition tank 1 is connected to the terminal tank 2 via a connecting pipe A4, and the terminal tank 2 is connected to the drawing tower 6 via a connecting pipe B5. Air pressure control ports 3 are respectively provided on the top of the terminal tank 2 and the transition tank 1. The function of the transition tank 1 is, on the one hand, to buffer the coating through the transition tank 1, and on the other hand, to regulate the pressure in the terminal tank 2 by adjusting the pressure in the transition tank 1. The function of the air pressure control port 3 is to inject gas into the terminal tank 2 and the transition tank 1 through the air pressure control port 3 to pressurize the terminal tank 2 and the transition tank 1, thereby conveying the coating outward through pressure. By adjusting the pressure, the speed of the coating conveyance can be controlled. Compared with conveying the coating through a pump, conveying by pressure has obvious advantages in both the adjustable range of the outlet pressure and the fineness of the adjustment of the outlet pressure.

[0027] One end of connecting pipe A4 extends through the top of transition tank 1 to the bottom of transition tank 1, and the other end of connecting pipe A4 communicates with the top of terminal tank 2. This ensures that the paint in transition tank 1 can submerge the bottom of connecting pipe A4, thereby ensuring that the paint in transition tank 1 can be transported to terminal tank 2 through connecting pipe A4 when pressurized. A one-way valve 7 is installed on connecting pipe A4 above transition tank 1, and a connecting valve 8 is installed on connecting pipe A4 between one-way valve 7 and terminal tank 2. The end of connecting pipe B5 extends through the top of terminal tank 2 to the bottom of terminal tank 2, ensuring that the paint in terminal tank 2 can submerge the bottom of connecting pipe B5, thereby ensuring that the paint in terminal tank 2 can be transported to the drawing tower through connecting pipe B5 when pressurized.

[0028] The air pressure control port 3 of the transition tank 1 is provided with an air inlet valve 9. An exhaust port 10 is provided on the air pressure control port 3 between the air inlet valve 9 and the transition tank 1, and an exhaust valve 11 is provided on the exhaust port 10. The air pressure control port 3 on the transition tank 1 is a constant-pressure air inlet. Exhaust through the exhaust port 10 and the exhaust valve 11 assists the air pressure control port 3 in controlling the pressure in the transition tank 1. The stable air intake from the air pressure control port 3 ensures stable and continuous delivery of the coating material from the transition tank 1 to the terminal tank 2. The air pressure control port 3 on the terminal tank 2 is a variable-pressure air inlet. Pressure changes at the air pressure control port 3 are used to rapidly adjust the pressure in the terminal tank 2, and thus the speed at which the coating material is delivered to the drawing tower.

[0029] Liquid level sensors 12 are respectively provided on the top of the terminal material tank 2 and the transition material tank 1 to monitor the liquid level of the paint in the terminal material tank 2 and the transition material tank 1, and then control the liquid level of the paint in the terminal material tank 2 and the transition material tank 1 to avoid the liquid level of the paint in the terminal material tank 2 and the transition material tank 1 being too low, resulting in interruption of paint transportation.

[0030] The centralized feeding station includes a weighing bracket 13, a support 14, a cylinder 15, and a ton barrel 16. The support 14 is mounted on the weighing bracket 13. One end of the support 14 is connected to the weighing bracket 13 via a pin, and the other end of the support 14 is connected to the weighing bracket 13 via the cylinder 15. The ton barrel 16 is mounted on the support 14. The cylinder 15 drives the support 14 to rotate about the pin, which in turn tilts the support 14, which in turn tilts the ton barrel 16, thereby unloading as much paint as possible from the ton barrel 16.

[0031] A ton barrel heating belt 17 is wound around the ton barrel 16 to heat the ton barrel through the ton barrel heating belt 17, thereby effectively reducing the viscosity of the paint in the ton barrel 16 by heating, effectively improving the fluidity of the paint, and facilitating rapid unloading.

[0032] A weighing sensor 18 for weighing the ton barrel 16 is respectively provided on each support leg of the weighing bracket 13. The remaining amount of paint in the ton barrel 16 is calculated by weighing the ton barrel 16 through the weighing sensor 18. When the liquid level of the paint in the ton barrel 16 drops below the discharge port, the ton barrel 16 can be tilted to continue unloading.

[0033] The pipe network includes a connecting pipe C19, a bellows 20, and a distributor 21. One end of the connecting pipe C19 is connected to the distributor 21 via the bellows 20. The distributor 21 is connected to the top of the transition tank 1 via branch pipes 22. The other end of the connecting pipe C19 is connected to the bottom of the ton barrel 16. The bellows 20 is flexible, allowing the connecting pipe C19 to bend between the bellows 20 and the distributor 21 when the ton barrel 16 is tilted, while maintaining the paint delivery capacity.

[0034] A main valve 23 is provided on the connecting pipe C19, and a bypass port 24 is provided on the connecting pipe C19 between the main valve 23 and the ton barrel 16. A bypass valve 25 is provided on the bypass port 24 to discharge the paint when bubbles are mixed into the paint through the bypass port 24, thereby discharging the bubbles.

[0035] A branch valve 26 is provided on the branch pipe 22, and a feed valve 27 is provided on the branch pipe 22 between the branch valve 26 and the transition tank 1 to control the unloading of the paint through the branch valve 26 and the feed valve 27 so that the paint can be unloaded into different wire drawing line tank stations.

[0036] When switching between coatings in this temporary fiber drawing coating feeding device, close the air inlet valve 9 of the drawing line tank station currently unloading. After closing the air inlet valve 9, open the exhaust valve 11 for 30 minutes to return the pressure in the transition tank 1 to zero, ensuring that the coating in the ton barrel 16, coiled tubing C19, bellows 20, and distributor 21 is completely discharged into the transition tank 1 under its own weight. After the exhaust valve 11 has been opened for 30 minutes, close the main valve 23, remove the existing ton barrel, and install the new ton barrel 16 on the support 14, connecting the connecting pipe C19. Once the ton barrel 16 is in place, close the branch valve 26 and feed valve 27 of the previously unloading ton barrel. Open the branch valve 26 and feed valve 27 corresponding to the drawing line tank station to be discharged. After the branch valve 26 and feed valve 27 are opened, open the main valve 23 to allow the coating in the ton barrel 16 to be discharged into the transition tank 1 under its own weight.

[0037] This temporary feeding device for optical fiber drawing coatings discharges all the coatings from the pipeline network into one drawing line tank station, then switches the coatings and feeds them through the pipeline network to the next drawing line tank station for delivery to the drawing tower. This prevents the coatings from mixing, effectively preventing the adverse effects of coating mixing on fiber drawing. Delivery is done by gravity and air pressure, eliminating the need for manual refilling, reducing labor intensity while effectively preventing "wire shearing." This solves the problem of existing feeding systems where coatings easily mix when switching, which can adversely affect fiber drawing.

Claims

1. A temporary feeding device for optical fiber drawing coating, comprising a centralized feeding station, a pipe network and a drawing line material tank station, characterized in that: The centralized feeding station is connected to a plurality of wire drawing line tank stations through a pipeline network; the wire drawing line tank station comprises a transition tank (1), a terminal tank (2) and an air pressure control port (3); the transition tank (1) is connected to the terminal tank (2) through a connecting pipe A (4), and the terminal tank (2) is connected to the wire drawing tower (6) through a connecting pipe B (5); the tops of the terminal tank (2) and the transition tank (1) are respectively provided with air pressure control ports (3).

2. The temporary feeding device for optical fiber drawing coating according to claim 1, characterized in that: One end of the connecting pipe A (4) passes through the top of the transition tank (1) and extends to the bottom of the transition tank (1), and the other end of the connecting pipe A (4) is connected to the top of the terminal tank (2); a one-way valve (7) is provided on the connecting pipe A (4) above the transition tank (1), and a connecting valve (8) is provided on the connecting pipe A (4) between the one-way valve (7) and the terminal tank (2); the end of the connecting pipe B (5) passes through the top of the terminal tank (2) and extends to the bottom of the terminal tank (2).

3. The temporary feeding device for optical fiber drawing coating according to claim 1, characterized in that: An air inlet valve (9) is provided on the air pressure control port (3) of the transition tank (1), an air outlet (10) is provided on the air pressure control port (3) between the air inlet valve (9) and the transition tank (1), and an air exhaust valve (11) is provided on the air exhaust port (10).

4. The temporary feeding device for optical fiber drawing coating according to claim 1, characterized in that: Liquid level sensors (12) are respectively provided on the tops of the terminal material tank (2) and the transition material tank (1).

5. The temporary feeding device for optical fiber drawing coating according to claim 1, characterized in that: The centralized feeding station comprises a weighing bracket (13), a support (14), a cylinder (15) and a ton barrel (16); the weighing bracket (13) is provided with a support (14); one end of the support (14) is connected to the weighing bracket (13) through a pin shaft, and the other end of the support (14) is connected to the weighing bracket (13) through a cylinder (15); and the ton barrel (16) is provided on the support (14).

6. A temporary feeding device for optical fiber drawing coating according to claim 5, characterized in that: The ton barrel (16) is wound with a ton barrel heating belt (17).

7. The temporary feeding device for optical fiber drawing coating according to claim 5, characterized in that: Each leg of the weighing bracket (13) is provided with a weighing sensor (18) for weighing the ton barrel (16).

8. The temporary feeding device for optical fiber drawing coating according to claim 7, characterized in that: The pipe network includes a connecting pipe C (19), a bellows (20) and a distributor (21). One end of the connecting pipe C (19) is connected to the distributor (21) through the bellows (20). The distributor (21) is connected to the top of the transition tank (1) through the branch pipe (22). The other end of the connecting pipe C (19) is connected to the bottom of the ton barrel (16).

9. A temporary feeding device for optical fiber drawing coating according to claim 8, characterized in that: The connecting pipe C (19) is provided with a main valve (23), the connecting pipe C (19) between the main valve (23) and the ton barrel (16) is provided with a bypass port (24), and the bypass port (24) is provided with a bypass valve (25).

10. The temporary feeding device for optical fiber drawing coating according to claim 8, characterized in that: A branch valve (26) is provided on the branch pipe (22), and a feed valve (27) is provided on the branch pipe (22) between the branch valve (26) and the transition tank (1).

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