A system and method for detecting germanium content in discarded optical fibers

Abstract

The invention discloses a system and method for detecting the germanium content of waste optical fibers, comprising: a crushing and screening device, which is used for crushing the waste optical fibers and screening them into particles of uniform size; an electric separation device, which uses a high-voltage electric field to separate the optical fiber particles into glass particles and plastic particles; a pickling device, which is used for pickling the glass particles to obtain a pickling solution; and an atomic absorption spectrometer, which is used for detecting the germanium content of the pickling solution. The invention separates the glass fiber particles and the plastic cladding particles in the waste optical fibers by combining physical and chemical methods, thereby avoiding the interference of additives that may exist in the plastic cladding on the germanium detection, thereby improving the reliability of the detection result.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber waste treatment, and in particular to a system and method for detecting the germanium content of waste optical fibers. Background Art

[0002] Optical fiber consists of two main parts: the core and the cladding. The core is the central part of the fiber, usually made of high-purity silica (SiO2), and sometimes doped with other elements (such as germanium) to adjust its optical properties. The cladding is the outer part surrounding the core, usually made of plastic or other materials, which is used to protect the core and maintain the transmission of light. Germanium, as a doping element, can increase the refractive index of the optical fiber, and is used in some specialty optical fibers to create a core with specific optical properties.

[0003] Optical fiber waste refers to waste generated during the production and use of optical fibers, including waste containing germanium. In the production process of optical fibers, the utilization rate of germanium dioxide is low, and about 30% to 70% of germanium is wasted. These wasted germanium wastes can be recycled as secondary germanium resources.

[0004] Before recycling germanium waste, it is necessary to first determine the germanium content and purity. Knowing the germanium content in optical fiber waste is very important for market transactions. It can serve as a basis for buyers and sellers to evaluate the value of waste and help form a fair transaction price. In addition, detecting the germanium content in optical fiber waste helps monitor the production process and ensure product quality. The existing method for detecting the germanium content in optical fiber waste is to directly pickle the broken optical fiber waste, separate the germanium-containing solution, and then use a spectroscopic analyzer to detect the germanium-containing solution. The defect of this method is that germanium is mainly doped in the glass core of the optical fiber, not in the plastic cladding. The plastic cladding particles may contain various additives, such as plasticizers, stabilizers, flame retardants, etc. These substances may react with the acid during the pickling process to produce interfering substances, affecting the detection results of germanium. Summary of the invention

[0005] The purpose of the present invention is to provide a system and method for detecting the germanium content of waste optical fibers in view of the problems existing in the prior art. By combining physical and chemical methods, the glass fiber particles and plastic cladding particles in the waste optical fibers are separated, thereby avoiding the interference of additives that may exist in the plastic cladding on the germanium detection, thereby improving the reliability of the detection results.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A system for detecting germanium content in waste optical fibers comprises: a crushing and screening device, which is used to crush the waste optical fibers and screen them into particles of uniform size; an electric separation device, which uses a high-voltage electric field to separate optical fiber particles into glass particles and plastic particles; a pickling device, which is used to pickle glass particles to obtain a pickling solution; and an atomic absorption spectrometer, which is used to detect the germanium content of the pickling solution.

[0008] Furthermore, the electrostatic separation and sorting device includes a cabinet, and a material box, a vibrating feeder rack, a polarization pretreatment component, and an electrostatic separation and sorting component are arranged inside the cabinet; two material receiving hoppers are fixedly arranged at the lower part of the cabinet, and a material receiving container is arranged under each of the material receiving hoppers; the material box is used to load optical fiber particles, and the polarization pretreatment component is used to perform polarization pretreatment on the optical fiber particles in the material box; the vibrating feeder rack is used to transport the polarization pretreated optical fiber particles to the electrostatic separation and sorting component, and the electrostatic separation and sorting component is used to sort the optical fiber particles.

[0009] Furthermore, the vibrating feeding rack includes two vertically opposite mounting plates, the two mounting plates are connected by a cross beam, the outer walls of the two mounting plates are respectively connected to vibration motors, the inner walls of the two mounting plates are connected to a plurality of suspended vibration plates, the suspension ends of the vibration plates are tilted downward, and the plurality of vibration plates are staggered and arranged at intervals up and down.

[0010] Furthermore, vertical T-shaped guide grooves are provided on the upper inner walls of the two mounting plates, lower limit blocks are provided inside the T-shaped guide grooves, and T-shaped sliding blocks cooperating with the T-shaped guide grooves are provided on opposite sides of the material box.

[0011] Furthermore, a sliding door is provided on the top plate of the cabinet at a position corresponding to the material box, and a handle is provided on the top of the material box; a feed door is provided on the top plate of the material box, and the bottom plate of the material box is inclined downward toward one side, and a discharge door is provided at the downward end of the bottom plate of the material box, and a cylinder is connected to the outer wall of the bottom plate of the material box, and a movable rod of the cylinder is hinged to the outer wall of the discharge door.

[0012] Furthermore, the polarization pretreatment component includes a first pole plate, a second pole plate and a first insulating bracket, the first insulating bracket is fixedly connected to the cabinet, the first insulating bracket connects the first pole plate and the second pole plate respectively, and the first pole plate and the second pole plate are vertically symmetrically arranged on the front and rear sides of the upper part of the vibrating feeding frame.

[0013] Furthermore, the first insulating bracket includes a first movable bracket, a second movable bracket and a first fixed guide rod, the first fixed guide rod is fixedly connected to the cabinet, and the two first fixed guide rods are horizontally arranged on the left and right sides of the upper part of the vibrating feeder frame, the first movable bracket is connected to the back side of the first electrode plate through a plurality of insulating columns, and the second movable bracket is connected to the back side of the second electrode plate through a plurality of insulating columns; the two sides of the first movable bracket are respectively slidably connected to the first fixed guide rod on the corresponding side, and the two sides of the second movable bracket are respectively slidably connected to the first fixed guide rod on the corresponding side.

[0014] Furthermore, the electric separation and sorting assembly includes a third pole plate, a fourth pole plate and a second insulating bracket, the second insulating bracket is fixedly connected to the cabinet, the second insulating bracket respectively connects the third pole plate and the fourth pole plate, and the third pole plate and the fourth pole plate are vertically symmetrically arranged on the front and rear sides of the lower part of the vibrating feeding frame.

[0015] Furthermore, the second insulating bracket includes a third movable bracket, a fourth movable bracket and two second fixed guide rods, the second fixed guide rod is fixedly connected to the cabinet, the two second fixed guide rods are horizontally arranged on the left and right sides of the lower part of the vibrating feeder frame, the third movable bracket is connected to the back side of the third electrode plate through a plurality of insulating columns, and the fourth movable bracket is connected to the back side of the fourth electrode plate through a plurality of insulating columns; the two sides of the third movable bracket are respectively slidably connected to the second fixed guide rods on the corresponding sides, and the two sides of the fourth movable bracket are respectively slidably connected to the second fixed guide rods on the corresponding sides.

[0016] A second aspect of the present application provides a method for detecting germanium content in discarded optical fibers, comprising the following steps:

[0017] S1. Crushing the waste optical fiber sample and screening it into particles of uniform size;

[0018] S2, loading the optical fiber particles into a material box, and loading the material box into a vibrating feeding rack;

[0019] S3, using a polarization pretreatment component to perform polarization pretreatment on the optical fiber particles in the material box;

[0020] S4, opening the discharge door of the material box, so that the optical fiber particles fall on the vibration plate of the uppermost layer of the vibration feeding frame, and the optical fiber particles gradually move to the vibration plate of the next layer under the action of vibration, and so on;

[0021] S5, the vibrating feeder transports the optical fiber particles to the electric separation area, and the plastic particles in the optical fiber particles fall out from the rear side of the vibrating feeder under the action of the electric field, while the glass particles continue to descend along the vibrating plate until they fall out from the vertical bottom of the vibrating feeder;

[0022] S6, the glass particles falling from the vertical lower side of the vibrating feeding frame enter the first receiving container through the first receiving hopper, and the plastic particles falling from the rear side of the vibrating feeding frame enter the second receiving container through the second receiving hopper;

[0023] S7, acid-washing the glass particles in the first receiving container to obtain an acid-washing solution;

[0024] S8. Using an atomic absorption spectrometer to detect the germanium content of the pickling solution, thereby calculating the germanium content of the waste optical fiber sample.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. Through a combination of physical and chemical methods, the glass fiber particles and plastic cladding particles in the optical fiber waste are first separated to ensure the accuracy of subsequent pickling and germanium content detection; the separation process avoids the interference of additives that may exist in the plastic cladding on the germanium detection, thereby improving the reliability of the test results;

[0027] 2. The electric separation device uses a high voltage electric field to effectively separate the optical fiber particles. This method has high separation efficiency and can process a large number of waste samples, which is suitable for industrial applications;

[0028] 3. The combination of crushing and screening device, electric separation device and atomic absorption spectrometer realizes the automation of optical fiber waste treatment, reduces manual operation, and improves work efficiency and safety;

[0029] 4. Accurate detection of germanium content provides a reliable basis for the market transaction of discarded optical fibers, helps to form a fair transaction price, and protects the interests of both buyers and sellers;

[0030] 5. Regular testing of the germanium content in discarded optical fibers can help monitor the optical fiber production process, ensure product quality, and provide data support for production optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the external structure of the electric separation and sorting device in one embodiment of the present application;

[0032] Figure 2 This is a schematic diagram of the internal structure of an electric separation and sorting device in one embodiment of the present application;

[0033] Figure 3 This is a schematic diagram of the structure of a material box and a vibrating feeder in one embodiment of the present application;

[0034] Figure 4 This is a structural schematic diagram of a material box in one embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of the structure of a polarization pretreatment component and an electrical separation component in one embodiment of the present application;

[0036] In the figure: 1. cabinet; 2. material box; 201. T-shaped slider; 3. receiving hopper; 4. receiving container; 5. mounting plate; 6. vibration motor; 7. vibration plate; 8. T-shaped guide groove; 9. sliding door; 10. handle; 11. feed door; 12. discharge door; 13. cylinder; 14. first pole plate; 15. second pole plate; 16. first movable bracket; 17. second movable bracket; 18. first fixed guide rod; 19. third pole plate; 20. fourth pole plate; 21. third movable bracket; 22. fourth movable bracket; 23. second fixed guide rod. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Before recycling germanium waste, it is necessary to first determine the germanium content and purity. Knowing the germanium content in optical fiber waste is very important for market transactions. It can serve as a basis for buyers and sellers to evaluate the value of waste and help form a fair transaction price. In addition, detecting the germanium content in optical fiber waste helps monitor the production process and ensure product quality. The existing method for detecting the germanium content in optical fiber waste is to directly pickle the broken optical fiber waste, separate the germanium-containing solution, and then use a spectroscopic analyzer to detect the germanium-containing solution. The defect of this method is that germanium is mainly doped in the glass core of the optical fiber, not in the plastic cladding. The plastic cladding particles may contain various additives, such as plasticizers, stabilizers, flame retardants, etc. These substances may react with the acid during the pickling process to produce interfering substances, affecting the detection results of germanium.

[0039] In the description of the present invention, in the first aspect of the present application, a system for detecting the germanium content of discarded optical fibers is provided, comprising: a crushing and screening device, the crushing and screening device is used to crush the discarded optical fibers and screen them into particles of uniform size; an electrostatic sorting device, the electrostatic sorting device uses a high-voltage electric field to sort the optical fiber particles into glass particles and plastic particles; a pickling device, the pickling device is used to pickle the glass particles to obtain a pickling solution; and an atomic absorption spectrometer, the atomic absorption spectrometer is used to detect the germanium content of the pickling solution.

[0040] The discarded optical fiber is first physically processed by a crushing and screening device to break it into smaller particles. The screening process ensures that all particles are of uniform size to facilitate the sorting efficiency of the electric separation device.

[0041] Specifically, the crushing and screening device includes a primary coarse crushing device, a secondary fine crushing device and a screening device. Preferably, the primary coarse crushing device can use a roller crusher to crush the waste optical fiber into 10 mm particles, and the secondary fine crushing device can use a cone crusher to further crush the 10 mm particles into 2 mm particles. The screening device is used to screen out larger and smaller particles. The above devices are all relatively mature existing technologies, and the specific structures are not described here one by one.

[0042] The crushed optical fiber particles include plastic cladding particles and glass fiber particles. When separating the glass fiber particles and the plastic cladding particles, due to the different electrical conductivities of the two materials, effective separation can be achieved by adjusting the parameters of the electrostatic separator.

[0043] The sorted glass particles enter the pickling unit and are treated with an appropriate acid solution to dissolve and extract the germanium doped in the glass fiber. The pickling process produces a pickling solution containing germanium, while other components in the glass fiber do not dissolve or react in different ways.

[0044] After separating the glass fiber particles from the plastic cladding particles, the glass fiber particles are pickled. Since the plastic cladding particles are removed, the glass fiber particles are pure and contain no or less impurities, which will not affect the test results of the germanium content.

[0045] An atomic absorption spectrometer is an analytical instrument used to determine the content of specific elements in a sample. It is based on the principle of atomic absorption spectroscopy and quantitatively analyzes the content of elements by measuring the degree of absorption of light of a specific wavelength by ground state atoms in the sample. Using an atomic absorption spectrometer to measure the germanium content in a solution is an existing technology and will not be described in detail here.

[0046] The above scheme combines physical and chemical separation methods. First, the discarded optical fiber is broken into particles of uniform size through a crushing and screening device, and then the glass particles and plastic particles are separated by an electric separation device under the action of a high-voltage electric field. The germanium doped in the glass fiber is then extracted by acid washing. The separation efficiency is high, the environmental pollution is less, and the detection results are accurate.

[0047] The following will be combined with the attached Figures 1 to 5 , the electrostatic separation device is described in detail.

[0048] like Figure 1As shown, in some embodiments, the electrostatic separation and sorting device includes a cabinet 1, and a material box 2, a vibrating feeder rack, a polarization pretreatment component, and an electrostatic separation and sorting component are provided inside the cabinet 1. Two material receiving hoppers 3 are fixedly provided at the lower part of the cabinet 1, and a material receiving container 4 is provided under each of the material receiving hoppers 3; the material box 2 is used to load optical fiber particles, and the polarization pretreatment component is used to polarize the optical fiber particles in the material box 2, and the vibrating feeder rack is used to transport the polarization pretreated optical fiber particles to the electrostatic separation and sorting component, and the electrostatic separation and sorting component is used to sort the optical fiber particles.

[0049] The material box 2 is used to load the crushed and screened optical fiber particles, which facilitates the subsequent processing steps. The polarization pretreatment component performs electrical treatment on the optical fiber particles in the material box, and changes the charge state on the particle surface by applying a high voltage electric field, thereby enhancing the separation effect in the subsequent electro-selection process; the vibration feeder uses the vibration generated by the vibration motor to gradually transport the optical fiber particles after polarization pretreatment from the material box to the electro-selection and separation component; the design of the vibration plate allows the particles to be evenly distributed and smoothly transmitted; the electro-selection and separation component uses a high-voltage electric field to sort the optical fiber particles; under the action of the electric field, glass fiber particles and plastic cladding particles with different charges will be separated according to their electrical property differences; the separated glass fiber particles and plastic cladding particles fall into the corresponding receiving hopper and receiving container respectively, which is convenient for subsequent processing and recycling.

[0050] The principle of the above polarization pretreatment is that the polarization pretreatment component applies a high voltage electric field to the optical fiber particles in the material box. Under the action of the electric field, the surface of the optical fiber particles will accumulate charges; for glass fiber and plastic cladding, due to their different electrical properties, such as dielectric constant and conductivity, they will show different charge accumulation behaviors in the electric field. Generally speaking, plastic cladding particles have a higher dielectric constant and lower conductivity, and are more likely to accumulate charges. By adjusting the electric field, the plastic cladding particles can be made positively charged while the glass fiber particles remain neutral. In this way, in the subsequent electrostatic separation process, particles with different charges will move in different directions under the action of the electric field, thereby achieving separation.

[0051] like Figure 2 and Figure 3As shown, in some embodiments, the vibrating feeder comprises two mounting plates 5 arranged vertically opposite to each other, the two mounting plates 5 are connected by a crossbeam, the outer walls of the two mounting plates 5 are respectively connected to a vibration motor 6, and the inner walls of the two mounting plates 5 are connected to a plurality of suspended vibration plates 7, the suspension ends of the vibration plates 7 are tilted downward, and the plurality of vibration plates 7 are staggered in intervals from top to bottom. The vibration plates 7 suspended on the inner wall of the mounting plate 5 are the parts that directly contact the optical fiber particles; the downward tilt design of the suspension ends of the vibration plates 7 helps guide the particles to move along the vibration plates; the vibration plates 7 are staggered in intervals from top to bottom, so that a wave-like vibration transmission can be formed under the action of the vibration motor 6, which helps the uniform distribution and continuous flow of the particles.

[0052] like Figure 2 and Figure 3 As shown, in some embodiments, the upper inner wall of the two mounting plates 5 is provided with a vertical T-shaped guide groove 8, the interior of the T-shaped guide groove 8 is provided with a lower limit block, and the opposite sides of the material box 2 are respectively provided with a T-shaped slider 201 that cooperates with the T-shaped guide groove 8. By providing the T-shaped guide groove 8 and cooperating with the T-shaped slider 201, the detachable connection between the material box 2 and the vibration feeder is facilitated. When the vibration motor 6 is started, the vibration is transmitted to the vibration plate 7 through the mounting plate 5, thereby generating sufficient vibration energy to cause the optical fiber particles in the material box 2 to vibrate; the vibration effect helps to overcome the friction and adhesion between the particles, so that the optical fiber particles can be smoothly discharged from the discharge port of the material box 2.

[0053] like Figures 1 to 4 As shown, in some embodiments, a sliding door 9 is provided on the top plate of the cabinet 1 at a position corresponding to the material box 2, and a handle 10 is provided on the top of the material box 2; a feed door 11 is provided on the top plate of the material box 2, and the bottom plate of the material box 2 is inclined downward toward one side, and a discharge door 12 is provided at the downward end of the bottom plate of the material box 2, and a cylinder 13 is connected to the outer wall of the bottom plate of the material box 2, and a movable rod of the cylinder 13 is hinged to the outer wall of the discharge door 12.

[0054] The sliding door 9 is used to facilitate the loading and unloading of the material box 2. The top plate of the material box 2 is provided with a feed door 11 for adding materials into the material box 2; the bottom plate of the material box 2 is designed to be inclined downward toward one side, which is conducive to the flow and discharge of materials; the discharge door 12 is located at the downward end of the bottom plate, which is used to control the discharge of materials; the outer wall of the bottom plate of the material box 2 is connected to a cylinder 13, and the movable rod of the cylinder 13 is hinged to the outer wall of the discharge door 12; the telescopic action of the cylinder 13 is used to control the opening and closing of the discharge door 12.

[0055] like Figure 5As shown, in some embodiments, the polarization pretreatment component includes a first pole plate 14, a second pole plate 15 and a first insulating bracket, the first insulating bracket is fixedly connected to the cabinet 1, the first insulating bracket respectively connects the first pole plate 14 and the second pole plate 15, and the first pole plate 14 and the second pole plate 15 are vertically symmetrically arranged on the front and rear sides of the upper part of the vibrating feeding frame.

[0056] The first pole plate 14 and the second pole plate 15 are the main components for generating the polarization pretreatment electric field. When a high voltage is applied between the two pole plates, a high-intensity electric field will be formed between them. The first insulating bracket serves as a supporting structure to fix the first pole plate and the second pole plate in appropriate positions and keep them electrically isolated from the cabinet 1 to ensure safe and effective electric field distribution.

[0057] Through the action of the polarization pretreatment component, the surface charge state of the optical fiber particles is changed, which creates favorable conditions for the subsequent electrostatic separation process. The polarization pretreatment not only improves the separation efficiency, but also helps to reduce the cross-contamination between plastic cladding particles and glass fiber particles, ensuring the accuracy of germanium content detection. In addition, this design also helps to improve the degree of automation and operational safety of the entire waste optical fiber processing system.

[0058] like Figure 5 As shown, in some embodiments, the first insulating bracket includes a first movable bracket 16, a second movable bracket 17 and a first fixed guide rod 18, the first fixed guide rod 18 is fixedly connected to the cabinet 1, and the two first fixed guide rods 18 are horizontally arranged on the left and right sides of the upper part of the vibration feeder, the first movable bracket 16 is connected to the back side of the first pole plate 14 through a plurality of insulating columns, and the second movable bracket 17 is connected to the back side of the second pole plate 15 through a plurality of insulating columns; the two sides of the first movable bracket 16 are respectively slidably connected to the first fixed guide rod 18 on the corresponding side, and the two sides of the second movable bracket 17 are respectively slidably connected to the first fixed guide rod 18 on the corresponding side.

[0059] Both sides of the first movable bracket 16 and the second movable bracket 17 are connected to the first fixed guide rod 18 through sliding connections respectively. Through this sliding connection mechanism, the distance between the first electrode plate 14 and the second electrode plate 15 can be easily adjusted, thereby changing the intensity and distribution of the electric field to adapt to different polarization requirements.

[0060] like Figure 5As shown, in some embodiments, the electrostatic separation component includes a third pole plate 19, a fourth pole plate 20 and a second insulating bracket, the second insulating bracket is fixedly connected to the cabinet 1, the second insulating bracket is respectively connected to the third pole plate 19 and the fourth pole plate 20, and the third pole plate 19 and the fourth pole plate 20 are vertically symmetrically arranged on the front and rear sides of the lower part of the vibrating feeder.

[0061] The symmetrical layout of the third electrode plate 19 and the fourth electrode plate 20 helps to form a uniform electric field under the vibrating feeder, so that the optical fiber particles passing through the vibrating feeder can be subjected to the uniform electric field force; under the action of the electric field, the charged optical fiber particles will be affected by the electric field force and move in the corresponding direction according to their charge properties. For example, the positively charged plastic cladding particles will be attracted to the negative electrode plate direction during the downward vibration process, while the neutral glass fiber particles will continue to be transported downward.

[0062] like Figure 5 As shown, in some embodiments, the second insulating bracket includes a third movable bracket 21, a fourth movable bracket 22 and two second fixed guide rods 23, the second fixed guide rod 23 is fixedly connected to the cabinet 1, and the two second fixed guide rods 23 are horizontally arranged on the left and right sides of the lower part of the vibration feeding frame, the third movable bracket 21 is connected to the back side of the third pole plate 19 through a plurality of insulating columns, and the fourth movable bracket 22 is connected to the back side of the fourth pole plate 20 through a plurality of insulating columns; the two sides of the third movable bracket 21 are respectively slidably connected to the second fixed guide rods 23 on the corresponding sides, and the two sides of the fourth movable bracket 22 are respectively slidably connected to the second fixed guide rods 23 on the corresponding sides.

[0063] The third movable bracket 21 and the fourth movable bracket 22 are connected to the second fixed guide rod 23 via sliding connection. Through the sliding connection mechanism, the distance between the third electrode plate 19 and the fourth electrode plate 20 can be easily adjusted, thereby changing the intensity and distribution of the electric field to meet different electrical selection requirements.

[0064] A second aspect of the present application provides a method for detecting germanium content in discarded optical fibers, comprising the following steps:

[0065] S1. Crushing the waste optical fiber sample and screening it into particles of uniform size;

[0066] S2, loading the optical fiber particles into the material box 2, and loading the material box 2 into the vibrating feeding frame;

[0067] S3, using a polarization pretreatment component to perform polarization pretreatment on the optical fiber particles in the material box 2;

[0068] S4, opening the discharge door 12 of the material box 2, so that the optical fiber particles fall on the vibration plate 7 of the uppermost layer of the vibration feeding frame, and the optical fiber particles gradually move to the vibration plate of the next layer under the action of vibration, and so on;

[0069] S5, the vibrating feeder transports the optical fiber particles to the electric separation area, and the plastic particles in the optical fiber particles fall out from the rear side of the vibrating feeder under the action of the electric field, while the glass particles continue to descend along the vibrating plate until they fall out from the vertical bottom of the vibrating feeder;

[0070] S6, the glass particles falling from the vertical lower side of the vibrating feeding frame enter the first receiving container through the first receiving hopper, and the plastic particles falling from the rear side of the vibrating feeding frame enter the second receiving container through the second receiving hopper;

[0071] S7, acid-washing the glass particles in the first receiving container to obtain an acid-washing solution;

[0072] S8. Using an atomic absorption spectrometer to detect the germanium content of the pickling solution, thereby calculating the germanium content of the waste optical fiber sample.

[0073] It should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or 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 position, be constructed and operated in a specific position, 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.

[0074] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0075] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A system for detecting germanium content in discarded optical fibers, characterized in that: include: A crushing and screening device, which is used to crush the discarded optical fibers and screen them into particles of uniform size; An electric separation device, which uses a high voltage electric field to separate optical fiber particles into glass particles and plastic particles; A pickling device, wherein the pickling device is used to pickle the glass particles to obtain a pickling solution; An atomic absorption spectrometer, which is used to detect the germanium content of the pickling solution; The electrostatic separation device comprises a cabinet, and a material box, a vibrating feeder, a polarization pretreatment component, and an electrostatic separation component are arranged inside the cabinet. Two receiving hoppers are fixedly arranged at the lower part of the cabinet, and a receiving container is arranged under each receiving hopper. The material box is used to load optical fiber particles, the polarization pretreatment component is used to perform polarization pretreatment on the optical fiber particles in the material box, the vibration feeding frame is used to transport the optical fiber particles after polarization pretreatment to the electrical separation and sorting component, and the electrical separation and sorting component is used to sort the optical fiber particles; The vibrating feeder frame comprises two mounting plates arranged vertically opposite to each other, the two mounting plates are connected by a crossbeam, the outer walls of the two mounting plates are respectively connected with a vibration motor, the inner walls of the two mounting plates are connected with a plurality of suspended vibration plates, the suspension ends of the vibration plates are arranged to be tilted downward, and the plurality of vibration plates are arranged alternately at intervals up and down; The upper parts of the inner walls of the two mounting plates are provided with vertical T-shaped guide grooves, the interior of the T-shaped guide grooves is provided with lower limit blocks, and the opposite sides of the material box are respectively provided with T-shaped sliding blocks that cooperate with the T-shaped guide grooves; The polarization pretreatment component includes a first pole plate, a second pole plate and a first insulating bracket, the first insulating bracket is fixedly connected to the cabinet, the first insulating bracket connects the first pole plate and the second pole plate respectively, and the first pole plate and the second pole plate are vertically symmetrically arranged on the front and rear sides of the upper part of the vibrating feeding frame.

2. A system for detecting germanium content in discarded optical fibers according to claim 1, characterized in that: The top plate of the cabinet is provided with a sliding door at a position corresponding to the material box, and a handle is provided on the top of the material box; the top plate of the material box is provided with a feed door, one end of the bottom plate of the material box is inclined downward, and a discharge door is provided at the downward end of the bottom plate of the material box, and the outer wall of the bottom plate of the material box is connected to a cylinder, and the movable rod of the cylinder is hinged to the outer wall of the discharge door.

3. The system for detecting germanium content in discarded optical fibers according to claim 1, characterized in that: The first insulating bracket includes a first movable bracket, a second movable bracket and a first fixed guide rod, the first fixed guide rod is fixedly connected to the cabinet, and two first fixed guide rods are horizontally arranged on the left and right sides of the upper part of the vibrating feeder frame, the first movable bracket is connected to the back side of the first electrode plate through a plurality of insulating columns, and the second movable bracket is connected to the back side of the second electrode plate through a plurality of insulating columns; the two sides of the first movable bracket are respectively slidably connected to the first fixed guide rod on the corresponding side, and the two sides of the second movable bracket are respectively slidably connected to the first fixed guide rod on the corresponding side.

4. The system for detecting germanium content in discarded optical fibers according to claim 1, characterized in that: The electric separation component includes a third pole plate, a fourth pole plate and a second insulating bracket, the second insulating bracket is fixedly connected to the cabinet, the second insulating bracket is respectively connected to the third pole plate and the fourth pole plate, and the third pole plate and the fourth pole plate are vertically symmetrically arranged on the front and rear sides of the lower part of the vibrating feeding frame.

5. The system for detecting germanium content in discarded optical fibers according to claim 4, characterized in that: The second insulating bracket includes a third movable bracket, a fourth movable bracket and two second fixed guide rods, the second fixed guide rod is fixedly connected to the cabinet, the two second fixed guide rods are horizontally arranged on the left and right sides of the lower part of the vibrating feeding frame, the third movable bracket is connected to the back side of the third electrode plate through a plurality of insulating columns, and the fourth movable bracket is connected to the back side of the fourth electrode plate through a plurality of insulating columns; the two sides of the third movable bracket are respectively slidably connected to the second fixed guide rods on the corresponding sides, and the two sides of the fourth movable bracket are respectively slidably connected to the second fixed guide rods on the corresponding sides.

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