Optical fiber coating smoke automatic adsorption device and method

Abstract

The invention discloses an optical fiber coating smoke automatic adsorption device and method, and belongs to the technical field of optical fibers. The optical fiber coating smoke automatic adsorption device comprises an illumination curing unit, the illumination curing unit comprises at least two sets of UV lamps, the at least two sets of UV lamps are arranged at intervals in the first direction, and the UV lamps are used for irradiating penetrating optical fibers so that coating layers of the optical fibers can be cured; the air draft unit comprises a flow guide pipeline extending in the first direction and an air draft pipeline extending in the second direction, the air draft pipeline communicates with the side wall of the flow guide pipeline to form a T-shaped structure, and the flow guide pipeline is located between the two sets of UV lamps; the adsorption unit comprises two groups of adsorption outer pipes with first adsorbents, one ends of the adsorption outer pipes are connected with the UV lamp, the other ends of the adsorption outer pipes are embedded in the flow guide pipeline, and the adsorption outer pipes are used for penetrating through optical fibers and adsorbing smoke. Smoke can be timely and efficiently adsorbed, and optical fiber coating defects and body injury caused by the optical fiber coating defects can be eliminated.

Description

Technical Field

[0001] The invention relates to the field of optical fiber technology, and in particular to an automatic optical fiber coating smoke adsorption device and method. Background Art

[0002] Optical fiber is a fiber made of glass or plastic that can be used as a light transmission tool. Its transmission principle is "total reflection of light", that is, when light enters the optical fiber at a suitable angle, the light will be totally reflected inside the optical fiber and transmitted along the optical fiber. Optical fiber is usually composed of three parts: core, cladding and coating. The core and cladding are pure quartz glass or doped quartz glass materials with high refractive index, which determine the optical properties of the optical fiber. However, quartz glass is a brittle and easy to crack material, so it is necessary to coat the surface of the bare optical fiber with a layer of material with a relatively high elastic modulus, that is, the coating, to protect the surface of the optical fiber from damage and improve its mechanical strength.

[0003] During the curing process of single-mode high-speed wire drawing coating, light-curing coating containing organic polymer components will produce a large amount of low-molecular reaction residues during the curing process. These substances exist in the form of gaseous substances under high temperature environment and evaporate from the inside of the coating. When the temperature drops, the gaseous volatiles will condense into liquid (mist) and solid small particles (smoke).

[0004] First, these unknown substances in the paint smoke will be adsorbed on the surface of the optical fiber during the high-speed drawing process, causing optical fiber coating defects; secondly, the unknown substances in the smoke will adhere to the drawing device in the form of particles and oily substances, bringing additional costs for cleaning and replacement of parts; at the same time, the smoke of unknown components is volatilized by the solidification of acrylic paint and has a pungent odor, and it cannot be ruled out that it will cause physical damage to people who inhale it for a long time.

[0005] Therefore, it is urgent to provide an automatic optical fiber coating smoke adsorption device and method to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide an automatic optical fiber coating smoke adsorption device and method, which can timely and efficiently adsorb smoke and help eliminate optical fiber coating defects and physical damage.

[0007] In order to achieve the above objectives, the following technical solutions are provided:

[0008] Optical fiber coating smoke automatic adsorption device, including:

[0009] A light curing unit, comprising at least two groups of UV lamps, wherein the at least two groups of UV lamps are arranged at intervals along a first direction, and the UV lamps are used to irradiate the optical fiber passing therethrough so as to cure the coating layer of the optical fiber;

[0010] An exhaust unit, comprising a guide duct extending along the first direction and an exhaust duct extending along the second direction, the exhaust duct being connected to a side wall of the guide duct to form a T-shaped structure, and the guide duct being located between the two groups of UV lamps;

[0011] The adsorption unit comprises two groups of adsorption outer tubes with a first adsorbent, one end of the adsorption outer tube is connected to the UV lamp, the other end of the adsorption outer tube is embedded in the guide pipe, and the adsorption outer tube is used to pass through the optical fiber and adsorb smoke.

[0012] As an optional solution of the optical fiber coating smoke automatic adsorption device, the exhaust unit also includes:

[0013] A pressure sensor is disposed on the exhaust duct and is used to detect the air pressure in the exhaust duct.

[0014] As an optional solution of the optical fiber coating smoke automatic adsorption device, the exhaust unit also includes:

[0015] An exhaust fan, wherein the exhaust interface of the exhaust fan is connected to an end of the exhaust duct away from the guide duct.

[0016] As an optional solution of the optical fiber coating smoke automatic adsorption device, the exhaust unit also includes:

[0017] A switch valve is arranged in the exhaust duct, and the switch valve is used to adjust the opening of the exhaust duct.

[0018] As an optional solution of the optical fiber coating smoke automatic adsorption device, the exhaust unit also includes:

[0019] The second adsorbent is arranged in the exhaust duct, and the second adsorbent is used for adsorbing smoke.

[0020] As an optional solution of the optical fiber coating smoke automatic adsorption device, the adsorption outer tube includes a first annular wall, and the adsorption unit also includes:

[0021] The adsorption inner tube comprises a second annular wall having a plurality of mesh holes, wherein the second annular wall is arranged inside the first annular wall, a containing space is formed between the second annular wall and the first annular wall, and the first adsorbent is filled in the containing space.

[0022] As an optional solution of the automatic adsorption device for optical fiber coating smoke, the first annular wall includes a first half part and a second half part, and the first half part and the second half part are detachably connected.

[0023] As an optional solution for the automatic adsorption device for optical fiber coating smoke, a third adsorbent is arranged in the UV lamp, and the third adsorbent is used to adsorb and remove oxygen.

[0024] The method uses the above-mentioned optical fiber coating smoke automatic adsorption device to treat the optical fiber, comprising the following steps:

[0025] The optical fiber passes through the optical fiber coating smoke automatic adsorption device along a first direction and moves at a set speed;

[0026] Starting a light curing unit, wherein the light curing unit irradiates the optical fiber with a set light intensity;

[0027] The exhaust fan of the exhaust unit is started to form a vortex inside the adsorption outer tube in the guide duct;

[0028] The smoke passes through the adsorption outer tube, the guide pipe and the exhaust pipe in sequence and is discharged or collected in a container.

[0029] As an optional solution of the method, when the smoke concentration is less than a first set threshold value, the exhaust fan of the exhaust unit stops running.

[0030] As an optional solution of the method, when the negative pressure value in the exhaust duct is greater than a second set threshold value, the opening of the switch valve is increased.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The optical fiber coating smoke automatic adsorption device provided by the present invention has UV lamps of the light curing unit respectively arranged at the upper and lower ends of the guide pipe of the exhaust unit, and the adsorption outer tube with the first adsorbent of the adsorption unit is installed between the UV lamp and the guide pipe. On the one hand, the smoke generated by the curing of the coating layer can be adsorbed by the first adsorbent in the adsorption outer tube, and on the other hand, the exhaust pipe is connected to the side wall of the guide pipe, so that eddy currents can be generated inside the guide pipe and inside the adsorption outer tube, so that the smoke is fully contacted with the first adsorbent in the adsorption outer tube, so that the optical fiber coating smoke automatic adsorption device has the functions of extracting and collecting smoke and adsorbing smoke. The optical fiber coating smoke automatic adsorption device can timely and efficiently adsorb smoke, which helps to eliminate optical fiber coating defects and body damage.

[0033] The method provided by the present invention comprises the following steps: the optical fiber passes through the optical fiber coating smoke automatic adsorption device along a first direction and moves at a set speed; the light curing unit is started, and the light curing unit irradiates the optical fiber with a set light intensity; the exhaust unit is started to form a vortex inside the adsorption outer tube in the guide duct; the smoke is discharged or collected into a container after passing through the adsorption outer tube, the guide duct and the exhaust duct in sequence, so that the smoke can be adsorbed in a timely and efficient manner, which helps to eliminate optical fiber coating defects and physical injuries. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0035] Figure 1 It is a schematic diagram of an explosion of an automatic optical fiber coating smoke adsorption device according to an embodiment of the present invention;

[0036] Figure 2 is a top view of the exhaust unit in an embodiment of the present invention;

[0037] Figure 3 Flow chart of the method in an embodiment of the present invention.

[0038] Reference numerals:

[0039] 100. Optical fiber;

[0040] 1. Light curing unit; 2. Ventilation unit; 3. Adsorption unit;

[0041] 11. UV lamp;

[0042] 21. Diversion duct; 22. Exhaust duct; 23. Pressure sensor; 24. Exhaust fan; 25. Switch valve;

[0043] 31. Adsorb the outer tube; 32. Adsorb the inner tube. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0048] In order to absorb smoke in a timely and efficient manner, which helps to eliminate optical fiber coating defects and physical damage, this embodiment provides an automatic optical fiber coating smoke absorption device and method, as follows: Figures 1 to 3 The specific contents of this embodiment are described in detail.

[0049] like Figure 1 Combination Figure 2As shown, the optical fiber coating smoke automatic adsorption device in this embodiment includes a light curing unit 1, an exhaust unit 2 and an adsorption unit 3. Among them, the light curing unit 1 includes at least two groups of UV lamps 11, at least two groups of UV lamps 11 are arranged at intervals along the first direction, and the UV lamps 11 are used to irradiate the optical fiber 100 passing through and cure the coating layer of the optical fiber 100. The exhaust unit 2 includes a guide pipe 21 extending along the first direction and an exhaust pipe 22 extending along the second direction. The exhaust pipe 22 is connected to the side wall of the guide pipe 21 and forms a T-shaped structure. The guide pipe 21 is located between the two groups of UV lamps 11 to prevent smoke from escaping. The adsorption unit 3 includes two groups of adsorption outer tubes 31 with a first adsorbent, one end of the adsorption outer tube 31 is connected to the UV lamp 11, and the other end of the adsorption outer tube 31 is embedded in the guide pipe 21. The adsorption outer tube 31 is used to pass through the optical fiber 100 and adsorb smoke. Exemplarily, the guide pipe 21 and the exhaust pipe 22 are cylindrical through pipes made of high-density polyethylene. Exemplarily, the first adsorbent includes but is not limited to at least one of coal-based activated carbon, coconut shell activated carbon, molecular sieve and silica gel, which is used for physical adsorption of small organic molecules in smoke, and the activated carbon is convenient to replace and reuse after a certain period of use. If it is necessary to reduce the amount of water in the air entering the reaction, some molecular sieve / montmorillonite, etc. can be added to the first adsorbent. The first direction mentioned in this embodiment is the vertical direction, and the second direction mentioned in this embodiment is the horizontal direction.

[0050] In short, the optical fiber coating smoke automatic adsorption device provided by the present invention has the UV lamp 11 of the light curing unit 1 disposed at the upper and lower ends of the guide duct 21 of the exhaust unit 2, respectively, and the adsorption outer tube 31 with the first adsorbent of the adsorption unit 3 is installed between the UV lamp 11 and the guide duct 21. On the one hand, the smoke generated by the curing of the coating layer can be adsorbed by the first adsorbent in the adsorption outer tube 31. On the other hand, the exhaust duct 22 is connected to the side wall of the guide duct 21, which can generate vortices inside the guide duct 21 and the adsorption outer tube 31, so that the smoke is fully contacted with the first adsorbent in the adsorption outer tube 31, so that the optical fiber coating smoke automatic adsorption device has the functions of extracting and collecting smoke and adsorbing smoke. The optical fiber coating smoke automatic adsorption device can timely and efficiently adsorb smoke, which helps to eliminate coating defects and physical damage of the optical fiber 100.

[0051] Furthermore, the exhaust unit 2 further includes a pressure sensor 23, which is disposed on the exhaust duct 22, and is used to detect the air pressure in the exhaust duct 22. The optical fiber coating smoke automatic adsorption device further includes a control unit, and the pressure sensor 23 is electrically connected to the control unit. The pressure sensor 23 can detect the air pressure in the exhaust duct 22 in real time, which is convenient for maintenance personnel to observe.

[0052] Exemplarily, the exhaust unit 2 further includes an exhaust fan 24, and an exhaust interface of the exhaust fan 24 is connected to an end of the exhaust duct 22 away from the guide duct 21. The exhaust fan 24 provides power for extracting smoke, and can timely discharge the smoke generated by the curing of the coating layer of the optical fiber 100 to avoid surface defects of the optical fiber 100 caused by the smoke.

[0053] Furthermore, the exhaust unit 2 further includes a switch valve 25, which is disposed in the exhaust duct 22, and is used to adjust the opening of the exhaust duct 22. In this embodiment, the switch valve 25 is a hemispherical regulating valve. The exhaust unit 2 adopts unilateral exhaust and non-centrifugal extraction of smoke, uses a pressure sensor 23 to monitor the pressure in the duct in real time, sets a suitable parameter value, and automatically adjusts the opening of the switch valve 25 in the exhaust duct 22 or the power of the exhaust fan 24 when there is paint waste causing blockage and reducing the exhaust pressure.

[0054] Optionally, the exhaust unit 2 further includes a second adsorbent, which is disposed in the exhaust duct 22 and is used to adsorb smoke. By adding the second adsorbent in the exhaust duct 22, it is convenient to adsorb the smoke in the exhaust duct 22, thereby preventing toxic and harmful smoke from polluting the air, and allowing the smoke to be fully adsorbed by the optical fiber-coated smoke automatic adsorption device. The second adsorbent can be a gel-state adsorbent, using a commercial special hydrocarbon ester small molecule adsorbent to filter and absorb the smoke, thereby preventing the discharge and harm of harmful waste smoke.

[0055] Exemplarily, the adsorption outer tube 31 includes a first annular wall, and the adsorption unit 3 also includes an adsorption inner tube 32. The adsorption inner tube 32 includes a second annular wall having a plurality of mesh holes. The adsorption inner tube 32 is arranged in the adsorption outer tube 31. A storage space is formed between the second annular wall of the adsorption inner tube 32 and the first annular wall of the adsorption outer tube 31, and the first adsorbent is filled in the storage space. By adding the adsorption inner tube 32, it can not only be used to limit the filling area of ​​the first adsorbent in the adsorption outer tube 31, but also ensure that the smoke can pass through the mesh and fully contact the first adsorbent. The mesh inner diameter of the adsorption inner tube 32 in this embodiment is less than 2 mm, and it is made of ultraviolet and high temperature resistant materials, which facilitates the entry of smoke while preventing the solid filtered adsorbent from falling. The material used for the inner tube in this article is polyphenylene sulfide (PPS); the material of the adsorption outer tube 31 is selected to be made of high-density polyethylene.

[0056] Exemplarily, the adsorption outer tube 31 includes a first half and a second half, and the first half and the second half are detachably connected. The first annular wall of the adsorption outer tube 31 is divided into two halves, and the first half and the second half can be connected by snap-fit ​​or bolts, and the first half and the second half are combined into a complete pipe, so that the adsorption outer tube 31 can be opened to pour out the first adsorbent inside. The adsorption outer tube 31 and the adsorption inner tube 32 can form a double-layer filter tube with an open top, which is convenient for employees to add the first adsorbent without leakage.

[0057] Furthermore, a third adsorbent is provided in the UV lamp 11, and the third adsorbent is used to adsorb and remove oxygen. By adding the third adsorbent, the siphon effect caused by the movement speed of the optical fiber 100 can be reduced, so that oxygen can enter the UV lamp 11 and participate in the curing process of the optical fiber 100. The third adsorbent is also called a trace oxygen absorber, deoxidizer or deoxidizer. The working principle of the trace oxygen absorber is to absorb the oxygen in the package and convert it into harmless substances through chemical reaction or physical adsorption. For example, the iron-based deoxidizer generates iron oxide by oxidation reaction with oxygen, thereby removing oxygen from the UV lamp 11. Non-iron-based deoxidizers may remove oxygen through catalysis or chemical adsorption. It can be understood that the interior of the optical fiber coating smoke automatic adsorption device is a completely sealed device to reduce the harm of smoke escape to the human body.

[0058] like Figure 3 As shown, this embodiment also provides a method, which uses the above optical fiber coating smoke automatic adsorption device to process the optical fiber 100, including the following steps: the optical fiber 100 passes through the optical fiber coating smoke automatic adsorption device along the first direction and moves at a set speed; the light curing unit 1 is started, and the light curing unit 1 irradiates the optical fiber 100 with a set light intensity; the exhaust fan 24 of the exhaust unit 2 is started to form a vortex inside the adsorption outer tube 31 in the guide duct 21; the smoke passes through the adsorption outer tube 31, the guide duct 21 and the exhaust duct 22 in turn and is discharged or collected in a container. The vortex generated by this method can absorb smoke in a timely and efficient manner, which helps to eliminate coating defects and physical damage of the optical fiber 100.

[0059] Furthermore, in some application scenarios, when the smoke concentration is less than the first set threshold, the exhaust fan 24 of the exhaust unit 2 stops running. When the smoke concentration is small, the optical fiber coating smoke automatic adsorption device can use the adsorption unit 3 to adsorb the smoke. When the smoke concentration is large, the optical fiber coating smoke automatic adsorption device can start the exhaust unit 2. The exhaust unit 2 cooperates with the adsorption unit 3 to distribute or collect the smoke into the container to avoid polluting the air.

[0060] Furthermore, in some application scenarios, when the negative pressure value in the exhaust duct 22 is greater than the second set threshold, the opening of the switch valve 25 is increased. The suction force of the exhaust duct 22 on smoke is controlled by adjusting the opening of the switch valve 25. It can be understood that the first set threshold and the second set threshold can be set according to actual use requirements, and no excessive restrictions are made here.

[0061] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An automatic optical fiber coating smoke adsorption device, characterized in that: include: A light curing unit (1) comprising at least two groups of UV lamps (11), wherein the at least two groups of UV lamps (11) are arranged at intervals along a first direction, and the UV lamps (11) are used to irradiate the optical fiber (100) passing therethrough so that the coating layer of the optical fiber (100) is cured; An air extraction unit (2), comprising a guide duct (21) extending along the first direction and an air extraction duct (22) extending along the second direction, the air extraction duct (22) being connected to a side wall of the guide duct (21) to form a T-shaped structure, and the guide duct (21) being located between the two groups of UV lamps (11); The adsorption unit (3) comprises two groups of adsorption outer tubes (31) having a first adsorbent, one end of the adsorption outer tube (31) being connected to the UV lamp (11), and the other end of the adsorption outer tube (31) being embedded in the guide pipe (21), and the adsorption outer tube (31) being used to pass through the optical fiber (100) and adsorb smoke.

2. The optical fiber coating smoke automatic adsorption device according to claim 1 is characterized in that: The exhaust unit (2) further comprises: A pressure sensor (23), wherein the pressure sensor (23) is arranged on the exhaust duct (22), and the pressure sensor (23) is used to detect the air pressure in the exhaust duct (22).

3. The optical fiber coating smoke automatic adsorption device according to claim 2, characterized in that: The exhaust unit (2) further comprises: An exhaust fan (24), wherein an exhaust interface of the exhaust fan (24) is connected to an end of the exhaust duct (22) away from the guide duct (21).

4. The optical fiber coating smoke automatic adsorption device according to claim 3 is characterized in that: The exhaust unit (2) further comprises: A switch valve (25), wherein the switch valve (25) is arranged in the exhaust duct (22), and the switch valve (25) is used to adjust the opening of the exhaust duct (22).

5. The optical fiber coating smoke automatic adsorption device according to claim 4, characterized in that: The exhaust unit (2) further comprises: A second adsorbent, wherein the second adsorbent is arranged in the exhaust duct (22), and the second adsorbent is used for adsorbing smoke.

6. The optical fiber coating smoke automatic adsorption device according to claim 4, characterized in that: The adsorption outer tube (31) comprises a first annular wall, and the adsorption unit (3) further comprises: The adsorption inner tube (32) comprises a second annular wall having a plurality of mesh holes, wherein the second annular wall is arranged inside the first annular wall, and a containing space is formed between the second annular wall and the first annular wall, wherein the first adsorbent is filled in the containing space.

7. The optical fiber coating smoke automatic adsorption device according to claim 6, characterized in that: The first annular wall includes a first half portion and a second half portion, and the first half portion is detachably connected to the second half portion.

8. The optical fiber coating smoke automatic adsorption device according to any one of claims 4 to 7, characterized in that: A third adsorbent is arranged inside the UV lamp (11), and the third adsorbent is used to adsorb and remove oxygen.

9. A method, characterized in that The optical fiber (100) is treated by using the optical fiber coating smoke automatic adsorption device as claimed in any one of claims 4 to 8, comprising the following steps: The optical fiber (100) passes through the optical fiber coating smoke automatic adsorption device along a first direction and moves at a set speed; Starting a light curing unit (1), wherein the light curing unit (1) irradiates the optical fiber (100) with a set light intensity; The exhaust fan (24) of the exhaust unit (2) is started to form a vortex inside the adsorption outer tube (31) in the guide pipe (21); The smoke passes through the adsorption outer tube (31), the flow guide pipe (21) and the exhaust pipe (22) in sequence and is then discharged or collected into a container.

10. The method according to claim 9, characterized in that When the smoke concentration is less than a first set threshold, the exhaust fan (24) of the exhaust unit (2) stops running.

11. The method according to claim 9, characterized in that When the negative pressure value in the exhaust duct (22) is greater than a second set threshold value, the opening of the switch valve (25) is increased.

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