Automatic production line for transformer waste metal treatment and treatment method

Abstract

The invention provides an automatic production line for transformer waste metal treatment and a treatment method, relates to the field of metal material separation, and aims to solve the problem that the material screening efficiency during recycling is affected due to the fact that an existing permanent magnet rotating roller is insufficient in magnetism removal capacity and poor in flexibility. Ferromagnetic metal in materials passing through the magnetic attraction rollers is attracted through the internally-electrified electromagnets, at least two magnetic attraction rollers are used for forming a roller set, switching of working positions is achieved through the overturning action of the roller frame, alternate working is achieved, and the working efficiency is improved. When the magnetic suction roller is located at the non-working position, the adsorbed ferromagnetic metal can be released through power loss of the internal electromagnet, the requirements of different feeding amounts and feeding speeds are met by adjusting the alternate working frequency of the magnetic suction roller and the rotating speed of the magnetic suction roller, upstream and downstream equipment is matched, and the sorting requirement for materials during recycling of the transformer is met.

Description

Technical Field

[0001] The present invention relates to the field of metal material sorting, and in particular to an automated production line and method for processing transformer waste metal. Background Art

[0002] Transformers are frequently used in power stations, substations, urban power grids, and industrial and mining enterprises. After the transformer reaches the end of its service life or has problems and needs to be eliminated, its internal windings can be recycled and reused. When recycling waste metal materials, eddy current magnetic separators are generally used for sorting. When electronic waste scraps containing non-magnetic conductive metals (such as lead, copper, zinc, etc.) pass through an alternating magnetic field at a certain speed, these non-magnetic conductive gold scraps will generate induced eddy currents. Since the material flow and the magnetic field have a relative motion speed, there is a thrust on the metal sheets and blocks that generate eddy currents. This principle can be used to separate some non-ferrous metals from the mixed material flow, but it is mostly used to sort non-ferromagnetic metals such as aluminum and copper, and it is inconvenient to separate materials mixed with ferromagnetic metals.

[0003] A Chinese patent (publication number CN211937372U, publication date 20201117) discloses an eddy current sorting device for screening metal aluminum in the slag of domestic waste incineration furnaces. The feed hopper is located above the demagnetization box, which is used to remove magnetic metals from the slag. The demagnetization box is docked with the transfer conveyor belt below to feed the slag after the magnetic metal is removed into the shaking feeder, which is docked with the conveyor belt for feeding the conveyor belt. A permanent magnetic roller is provided in the demagnetization box, and a stamp block tangent to the bottom of the permanent magnetic roller is provided. The stamp block is used to realize the stripping of the magnetic metal adsorbed on the permanent magnetic roller. The ferromagnetic fragments will rub against the surface of the roller during the process of adsorption and separation from the permanent magnetic roller. In particular, some sharp fragments will cause wear on the surface of the roller and shorten the service life of the permanent magnetic roller. After long-term use, the magnetic material on the surface of the roller may be damaged, resulting in weakened magnetism, affecting the sorting effect, and increasing equipment maintenance costs and downtime. When sorting the waste materials generated during transformer recycling, a large number of sharp structures are generated due to cutting winding wires, crushing shells, iron cores, etc. When the feed volume is large and the feed speed is fast, the demagnetization capacity of the traditional permanent magnet roller is insufficient, and the wear rate is fast. The flexibility of the permanent magnet roller is poor, and it is difficult to adjust the corresponding magnetism according to demand, resulting in the sorting efficiency being difficult to match the needs of upstream and downstream equipment. Summary of the invention

[0004] The purpose of the present invention is to provide an automated production line and method for processing transformer waste metal in view of the defects of the prior art. A magnetic roller is arranged between the feeding hopper and the conveyor belt, and the ferromagnetic metal in the material passing through the magnetic roller is adsorbed by an internally energized electromagnet. At least two magnetic rollers are used to form a roller group, and the flipping action of the roller frame is used to switch the working position and realize alternating operation. When the magnetic roller is in a non-working position, the adsorbed ferromagnetic metal can be released by de-energizing the internal electromagnet, thereby avoiding the problem of accelerated wear of the magnetic roller caused by scraping off the attached ferromagnetic metal with a scraper, etc. The frequency of the alternating operation of the magnetic roller and the rotation speed of the magnetic roller are adjusted to adapt to the needs of different feeding amounts and feeding speeds, adapt to upstream and downstream equipment, and meet the needs of material sorting during transformer recycling.

[0005] The first object of the present invention is to provide an automated production line for transformer waste metal processing, which adopts the following scheme:

[0006] It includes an eddy current magnetic separator, which includes a feed hopper, a magnetic attraction component and a conveyor belt arranged in sequence, the magnetic attraction component includes a magnetic attraction roller and a roller frame, at least two magnetic attraction rollers are arranged at intervals and are rotatably installed on the roller frame respectively, the roller frame is rotatably installed on the frame of the eddy current magnetic separator, the roller frame switches the magnetic attraction roller on the blanking path from the feed hopper to the conveyor belt by rotation, an electromagnet is provided inside the magnetic attraction roller, so as to control the adsorption and release of ferromagnetic materials on the surface of the magnetic attraction roller by turning on and off the electromagnet, and a receiving box is provided under the magnetic attraction roller which is not on the blanking path from the feed hopper to the conveyor belt to receive the ferromagnetic materials released from the surface of the magnetic attraction roller after the electromagnet is powered off.

[0007] Furthermore, a roller driving element is installed on the roller frame, and an output end of the roller driving element is connected to the magnetic roller to drive the magnetic roller to rotate around its axis.

[0008] Furthermore, the at least two magnetic rollers are distributed around the rotation axis of the roller frame, and the roller frame is connected to a roller frame driving element.

[0009] Furthermore, the electromagnets are distributed axially inside the magnetic attraction drum, and the electromagnetic field generated by the electromagnets when energized passes through the side wall of the magnetic attraction drum and acts on the ferromagnetic material.

[0010] Furthermore, it also includes a metal inspection and weighing machine, which includes a metal detector and a conveyor belt 2 arranged in sequence. The end of the conveyor belt 1 is equipped with a magnetic roller to utilize the induced eddy current generated by the magnetic roller to sort the material. The conveyor belt 2 is equipped with a weighing sensor. One end of the conveyor belt 2 passes through the metal detector and connects to the output end of the conveyor belt 1 to receive the metal material sorted out by the end of the eddy current magnetic separator.

[0011] Furthermore, the metal detector is provided with a detection area, and the path of the material conveyed by the second conveyor belt passes through the detection area.

[0012] Furthermore, it also includes a bagging assembly machine and a bag sealing machine. The inlet end of the bagging assembly machine is connected to the two ends of the conveyor belt, and the outlet end of the bagging assembly machine is connected to the bag sealing machine.

[0013] Furthermore, the feeding hopper is connected to a vibration motor, and an output end of the feeding hopper faces a first end of the conveyor belt.

[0014] The second object of the present invention is to provide a processing method for the transformer waste metal processing automated production line as described in the first object, comprising:

[0015] The waste materials generated by the recycling transformer are fed into the feeding hopper and then dropped from the feeding hopper to the first end of the conveyor belt;

[0016] The roller frame rotates to adjust the position of the magnetic roller, so that at least one magnetic roller is located on a material drop path from the feed hopper to the conveyor belt as a working magnetic roller, the electromagnet in the working magnetic roller remains energized, the working magnetic roller rotates and ferromagnetic materials are continuously attached to the surface;

[0017] After the ferromagnetic material adsorbed on the surface of the working magnetic roller reaches a set amount, the roller frame rotates to adjust the position of the magnetic roller, so that at least one working magnetic roller is switched to a non-working position, and at least one magnetic roller in the non-working position is moved to a material drop path from the feeding hopper to the conveyor belt as a working magnetic roller;

[0018] When the magnetic roller with the ferromagnetic material adsorbed on its surface reaches the non-working position, the internal electromagnet is powered off, and the ferromagnetic material adsorbed on the surface of the magnetic roller loses its adsorption effect and falls into the receiving box;

[0019] The switching between the cyclic working magnetic suction roller and the non-working magnetic suction roller can realize the cyclic screening of ferromagnetic materials in the material.

[0020] Furthermore, the switching frequency of the working magnetic roller, the rotation speed of the magnetic roller and / or the working parameters of the electromagnet are controlled according to the flow rate of the material conveyed from the feeding hopper to the conveyor belt.

[0021] Compared with the prior art, the present invention has the following advantages and positive effects:

[0022] In view of the current problems of insufficient demagnetization capacity and poor flexibility of permanent magnet rollers affecting the material screening efficiency during recycling, a magnetic roller is arranged between the feed hopper and the conveyor belt, and the ferromagnetic metal in the material passing through the magnetic roller is adsorbed by an internally energized electromagnet, and at least two magnetic rollers are used to form a roller group, and the flipping action of the roller frame is used to switch the working position and realize alternating operation. When the magnetic roller is in the non-working position, the adsorbed ferromagnetic metal can be released by the internal electromagnet losing power, thereby avoiding the problem of accelerated wear of the magnetic roller caused by scraping off the attached ferromagnetic metal with a scraper, etc., and the frequency of the alternating operation of the magnetic roller and the rotation speed of the magnetic roller are adjusted to meet the needs of different feeding amounts and feeding speeds, adapt to upstream and downstream equipment, and meet the material sorting needs during transformer recycling.

[0023] Eddy current magnetic separator, metal inspection weighing machine, bagging assembly machine and mechanical vision bag sealing machine are arranged in sequence. With the assistance of the conveying mechanism, the above four mechanisms are connected into a complete processing production line, realizing automatic transportation between various processes. The degree of automation is high, which improves the efficiency of sorting waste materials generated by recycling transformers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] Figure 1 It is an axonometric diagram of the overall structure of the automated production line for processing waste metals of transformers in one or more embodiments of the present invention;

[0026] Figure 2 It is a front view of the overall structure of the automated production line for processing transformer waste metals in one or more embodiments of the present invention;

[0027] Figure 3 It is an axonometric diagram of the structure of an eddy current magnetic separator in one or more embodiments of the present invention;

[0028] Figure 4 A front view of the structure of an eddy current magnetic separator in one or more embodiments of the present invention;

[0029] Figure 5 An exploded view of an eddy current magnetic separator in one or more embodiments of the present invention;

[0030] Figure 6 An axonometric view of a magnetic suction drum in an eddy current magnetic separator in one or more embodiments of the present invention;

[0031] Figure 7 It is an axonometric view of a material receiving box in an eddy current magnetic separator in one or more embodiments of the present invention;

[0032] Figure 8 An axonometric diagram of a metal inspection weighing machine in one or more embodiments of the present invention;

[0033] Fig. 9 A front view of a metal inspection and weighing machine in one or more embodiments of the present invention;

[0034] Fig.10 A partial enlarged view of a metal inspection weighing machine in one or more embodiments of the present invention;

[0035] Fig.11 It is an axonometric diagram of a counting sensor in a metal inspection weighing machine in one or more embodiments of the present invention;

[0036] Fig.12 A front view of a bagging assembly mechanism in one or more embodiments of the present invention;

[0037] Fig.13 A side view of a bagging assembly mechanism in one or more embodiments of the present invention;

[0038] Fig.14 An axonometric diagram of a visual bag sealing machine in one or more embodiments of the present invention;

[0039] Fig.15 A partial enlarged view of a visual bag sealing machine in one or more embodiments of the present invention;

[0040] Fig.16 An enlarged view of a visual camera in a visual bag sealing machine in one or more embodiments of the present invention;

[0041] Fig.17 A process flow chart of one or more embodiments of the present invention;

[0042] Among them, Ⅰ eddy current magnetic separator; Ⅱ metal inspection weighing machine; Ⅲ bagging combination mechanism; Ⅳ mechanical vision bag sealing machine;

[0043] Ⅰ-1 receiving box; Ⅰ-2 frame 1; Ⅰ-3 vibration motor; Ⅰ-4 feeding hopper; Ⅰ-5 motor 1; Ⅰ-6 magnetic roller; Ⅰ-7 conveyor belt 1; Ⅰ-8 motor 2; Ⅰ-9 magnetic roller; Ⅰ-10 roller frame; Ⅱ-1 frame 2; Ⅱ-2 metal detector; Ⅱ-3 central control machine; Ⅱ-4 weighing sensor; Ⅱ-5 conveyor belt 2; Ⅱ-6 tension wheel; Ⅲ-1 conveyor belt feeding port; Ⅲ-2 conveyor belt unloading port; Ⅲ-3 metal bagging machine Feeding port; III-4 Motor three; III-5 Conveyor belt three; III-6 Unloading port of metal bagging machine; IV-1 Conveyor belt plate; IV-2 Motor four; IV-3 Slide; IV-4 Fixed column; IV-5 Drag board; IV-6 Visual camera; IV-7 Guide plate; IV-8 Needle plate; IV-9 Tooth rack; IV-10 Tooth rack seat; IV-11 Needle rod housing; IV-6-1 Rack slide; IV-6-2 Coaxial light; IV-6-3 Camera; IV-6-4 Linear joint. DETAILED DESCRIPTION

[0044] Example 1

[0045] In a typical embodiment of the present invention, Figure 1-Figure 17 As shown, an automated production line for processing transformer waste metal is provided.

[0046] At present, in the process of processing waste metal of transformers, using scrapers to scrape off rollers with attached ferromagnetic metal will accelerate the wear of the rollers, shorten their service life, and increase maintenance costs. Based on this, this embodiment provides an automated production line for processing waste metal of transformers, which releases ferromagnetic metal by de-energizing the electromagnet, adjusts the alternating working frequency and speed of magnetic rollers Ⅰ-6, achieves adaptation with upstream and downstream equipment, avoids using scrapers to scrape off ferromagnetic metal, reduces wear on the surface of magnetic rollers Ⅰ-6, reduces equipment maintenance frequency and cost, improves the overall stability and reliability of the equipment, and can flexibly adjust the alternating working frequency and speed of magnetic rollers Ⅰ-6 according to different feeding amounts and feeding speeds, so that the automated production line can better adapt to the complex needs of material sorting during transformer recycling, and improves sorting efficiency and quality.

[0047] like Figure 1 and Figure 2 As shown in the figure, the automated production line for transformer waste metal processing includes an eddy current magnetic separator I, a metal detector weighing machine II, a bagging combination mechanism III, and a mechanical vision bag sealing machine IV, which are arranged in series. Among them, the eddy current magnetic separator I performs preliminary sorting of mixed metals and separates ferromagnetic metals, the metal detector weighing machine II detects metal impurities in the materials and weighs them, the bagging combination mechanism III bags the sorted and weighed materials, and the mechanical vision bag sealing machine IV seals the bagged materials, and uses mechanical vision to improve the bag sealing efficiency.

[0048] Specifically, Figure 3-Figure 5 As shown, the eddy current magnetic separator I includes a feed hopper I-4, a magnetic suction component and a conveyor belt I-7 arranged in sequence, which constructs the basic process framework of material sorting. The feed hopper I-4 is used to store the materials to be sorted, providing a source of materials for subsequent sorting; the conveyor belt I-7 is responsible for conveying the sorted materials to the subsequent processing link. The magnetic suction component includes a magnetic suction roller I-6 and a roller frame I-10, and at least two magnetic suction rollers I-6 are arranged at intervals and rotatably mounted on the roller frame I-10 respectively. Multiple magnetic suction rollers I-6 form a roller group, which provides a hardware basis for realizing alternating work, ensures continuous adsorption and processing of ferromagnetic metals without stopping the machine, and improves work efficiency.

[0049] The roller frame Ⅰ-10 is rotatably mounted on the frame 1Ⅰ-2 of the eddy current magnetic separator Ⅰ, and the magnetic roller Ⅰ-6 on the material dropping path from the feed hopper Ⅰ-4 to the conveyor belt Ⅰ-7 can be switched by rotation. The working positions of different magnetic rollers Ⅰ-6 can be switched, so that the magnetic roller Ⅰ-6 in the working position can absorb ferromagnetic metal, and the magnetic roller Ⅰ-6 in the non-working position can unload materials, etc., to achieve alternating work.

[0050] There is an electromagnet inside the magnetic roller I-6, which is used to control the adsorption and release of ferromagnetic materials on the surface of the magnetic roller I-6 by turning the power on and off. When the power is on, the ferromagnetic materials are adsorbed to separate the ferromagnetic metals in the mixed materials; when the power is off, the materials are released to avoid the use of scrapers to scrape off the ferromagnetic metals, which reduces the wear on the surface of the magnetic roller I-6, reduces the maintenance frequency and cost of the equipment, and improves the overall stability and reliability of the equipment.

[0051] A receiving box Ⅰ-1 is provided below the magnetic roller Ⅰ-6 which is not on the material dropping path from the feed hopper Ⅰ-4 to the conveyor belt Ⅰ-7, and is used to receive the ferromagnetic materials released from the surface of the magnetic roller Ⅰ-6 after the electromagnet is powered off. The setting of the receiving box Ⅰ-1 realizes the collection of the separated ferromagnetic metals, which is convenient for subsequent unified processing. Through the coordinated work of the magnetic roller Ⅰ-6, the electromagnet, the receiving box Ⅰ-1 and other components, the ferromagnetic metals can be accurately adsorbed and released, and collected in the receiving box Ⅰ-1, realizing the efficient sorting and proper collection of the ferromagnetic metals.

[0052] By adjusting the rotation speed of the roller frame Ⅰ-10 and the rotation speed of the magnetic roller Ⅰ-6, adapting to different feeding amounts and feeding speeds, and flexibly adjusting the alternating working frequency and speed of the magnetic roller Ⅰ-6, the automated production line can better adapt to the complex needs of material sorting during transformer recycling and improve the sorting efficiency and quality.

[0053] Under the traditional method, the stability of the drum rotation and the flexibility of the speed adjustment are insufficient, which affects the adsorption efficiency of ferromagnetic metals. In this embodiment, a drum drive element is installed on the drum frame Ⅰ-10, and its output end is connected to the magnetic roller Ⅰ-6. The drum drive element provides stable power for the magnetic roller Ⅰ-6 and can accurately adjust the speed according to the characteristics of the material. Increasing the speed when the material flow is large can increase the adsorption amount per unit time; reducing the speed when the ferromagnetic metal content in the material is low can ensure the adsorption accuracy and ultimately improve the overall sorting efficiency. Among them, the drum drive element can adopt a stepper motor, a servo motor, an electric motor, etc. Gu Tiannong

[0054] If the switching of the working positions of multiple magnetic rollers Ⅰ-6 is not smooth, it will cause discontinuous operation and affect production efficiency. In this embodiment, at least two magnetic rollers Ⅰ-6 are distributed around the rotation axis of the roller frame Ⅰ-10, and the roller frame Ⅰ-10 is connected to the roller frame Ⅰ-10 driving element. The roller frame Ⅰ-10 driving unit can use a motor Ⅰ-5, and the roller frame Ⅰ-10 is installed through the shaft seat. The rotation of the roller frame Ⅰ-10 is controlled by the roller frame Ⅰ-10 driving element to realize the rapid switching of the working position of the magnetic roller Ⅰ-6. After a roller is saturated with adsorption, it can be quickly rotated to the non-working position to unload, and at the same time, the idle roller is turned to the working position to continue adsorption, so that the operation can be carried out continuously, which greatly improves the production efficiency.

[0055] If the magnetic field distribution of the electromagnet is unreasonable, the ferromagnetic material will be insufficiently or unevenly adsorbed, affecting the sorting quality. In this embodiment, the electromagnet is distributed along the axial direction inside the magnetic roller Ⅰ-6. The electromagnetic field generated when energized can evenly pass through the side wall of the roller to act on the ferromagnetic material, ensuring that the adsorption force at each position on the surface of the magnetic roller Ⅰ-6 is consistent, avoiding the omission of ferromagnetic materials, and improving the sorting accuracy of ferromagnetic metals.

[0056] The eddy current separator I includes a vibration motor I-3, which is connected to the frame 1I-2 through a retractable spring on both sides of the feed hopper I-4. The vibration motor I-3 is set in the middle of both sides of the feed hopper I-4, and is connected to the feed hopper I-4 through bolts. Figure 6 As shown, the magnetic roller Ⅰ-6 is placed on the frame 1Ⅰ-2 through the roller frame Ⅰ-10. Figure 7 As shown, the material receiving box Ⅰ-1 is welded on the frame 1Ⅰ-2, the conveyor belt 1Ⅰ-7 and its roller device are connected to the frame 1Ⅰ-2 through the bearing seat, the bearing of the magnetic roller Ⅰ-9 is connected to the motor 2 Ⅰ-8, which is placed at the tail of the eddy current separator Ⅰ, and the magnetic roller Ⅰ-9 is wrapped around the conveyor belt 1Ⅰ-7.

[0057] like Figure 8 and Fig. 9 As shown, the metal inspection weighing machine is composed of a frame 2Ⅱ-1, a metal detector Ⅱ-2, a central control machine Ⅱ-3, a weighing sensor Ⅱ-4, a conveyor belt 2Ⅱ-5 and a tensioning wheel Ⅱ-6. The conveyor belt 2Ⅱ-5 is composed of three sections. The metal detector Ⅱ-2 is arranged on the first section of the conveyor belt 2Ⅱ-5. The shell of the metal detector Ⅱ-2 is welded on the frame 2Ⅱ-1. The central control machine Ⅱ-3 is placed behind the middle section of the conveyor belt 2Ⅱ-5. Fig.10 As shown, the tensioning wheel II-6 is arranged in the middle section of the conveyor belt 2 II-5, behind the weighing sensor II-4, and the input shaft of the tensioning wheel II-6 is connected to the motor, which is connected to the conveyor belt II II-5 through a pin, as shown in FIG. Fig.11 As shown, the weighing sensor Ⅱ-4 is arranged below the middle section of the conveyor belt 2 Ⅱ-5, and is seated on the frame 2 Ⅱ-1 through the weighing feet.

[0058] like Fig.12 and Fig.13 As shown, the bagging combination mechanism includes a conveyor belt loading port III-1, a conveyor belt unloading port III-2, a metal bagging machine loading port III-3, a metal bagging machine unloading port III-6, etc. The conveyor belt loading port III-1 and the conveyor belt unloading port III-2 are connected to the 60° inclined conveyor belt shell by welding, the metal bagging machine loading port III-3 is welded to the frame, the conveyor belt III-5 is connected to the frame by bearing bolts, and its position is just below the conveyor belt loading port III-1, the metal bagging machine unloading port III-6 is arranged at the end of the conveyor belt III-5, the output shaft of the motor III-4 is connected to the reducer, the output shaft of the reducer is connected to the gear, the gear is engaged with the upper belt of the conveyor belt III-5, and the metal bagging machine unloading port III-6 is welded to the frame.

[0059] like Fig.14 As shown, the mechanical vision bag sealing machine includes a conveyor belt plate IV-1, a motor IV-2, a chute IV-3, a fixed column IV-4, a drag line plate IV-5, a visual camera IV-6, a guide plate IV-7, a needle plate IV-8, a tooth frame IV-9, a tooth frame seat IV-10, and a needle bar housing IV-11. The conveyor belt plate IV-1 is welded to the frame, the fixed column IV-4 is arranged in the middle of the conveyor belt plate IV-1, the chute IV-3 is grooved on the side of the fixed column IV-4, the guide plate IV-7 is welded to the side of the conveyor belt plate IV-1, the output shaft of the motor IV-2 is connected to the belt in the belt cover on the needle bar housing IV-11, and the visual camera IV-6 is connected to the side of the conveyor belt plate IV-1 by bolts and nuts, and is flush with the bag sealing mechanism, as shown in FIG. Fig.15 As shown, the tooth frame IV-9 is connected to the tooth frame seat IV-10 through a bearing, and the needle plate IV-8 is connected to the needle bar housing IV-11 through a bolt. Fig.16 As shown, the coaxial light IV-6-2 and the camera IV-6-3 are connected to the rack slide IV-6-1 by bolts, and the linear connector IV-6-4 is inserted behind the camera IV-6-3.

[0060] Eddy current magnetic separator I, metal inspection weighing machine II, bagging assembly machine III and mechanical vision bag sealing machine IV are arranged in sequence. With the assistance of the conveying mechanism, the above four mechanisms are connected into a complete processing production line, realizing automatic transportation between various processes. The degree of automation is high, and the efficiency of sorting waste materials generated by recycling transformers is improved.

[0061] Example 2

[0062] In another typical embodiment of the present invention, Figure 1-Figure 5 As shown, a processing method for an automated production line for processing waste metal from transformers is provided, using the automated production line for processing waste metal from transformers as in Example 1.

[0063] A processing method for an automated production line for processing transformer waste metals, comprising:

[0064] The waste materials generated by the recycled transformer are fed into the feeding hopper I-4, and then dropped from the feeding hopper I-4 to the first end of the conveyor belt;

[0065] The roller frame Ⅰ-10 rotates to adjust the position of the magnetic roller Ⅰ-6, so that at least one magnetic roller Ⅰ-6 is located on the material drop path from the feeding hopper Ⅰ-4 to the conveyor belt as a working magnetic roller Ⅰ-6, and the electromagnet in the working magnetic roller Ⅰ-6 remains energized, the working magnetic roller Ⅰ-6 rotates and the ferromagnetic material is continuously attached to the surface;

[0066] After the ferromagnetic material adsorbed on the surface of the working magnetic roller I-6 reaches a set amount, the roller frame I-10 rotates to adjust the position of the magnetic roller I-6, so that at least one working magnetic roller I-6 is switched to a non-working position, and at least one magnetic roller I-6 in a non-working position is moved to a material drop path from the feeding hopper I-4 to the conveyor belt as a working magnetic roller I-6;

[0067] After the magnetic roller I-6 with the ferromagnetic material adsorbed on its surface reaches the non-working position, the internal electromagnet is powered off, and the ferromagnetic material adsorbed on the surface of the magnetic roller I-6 loses its adsorption effect and falls into the receiving box;

[0068] The switching between the circulating working magnetic suction roller Ⅰ-6 and the non-working position magnetic suction roller Ⅰ-6 realizes the circulating screening of ferromagnetic materials in the material.

[0069] The switching frequency of the working magnetic roller Ⅰ-6, the rotation speed of the magnetic roller Ⅰ-6 and / or the working parameters of the electromagnet are controlled according to the flow rate of the material transported from the feeding hopper Ⅰ-4 to the conveyor belt Ⅰ-7.

[0070] When the power is on, the ferromagnetic materials are adsorbed to separate the ferromagnetic metals in the mixed materials; when the power is off, the materials are released to avoid the use of scrapers to scrape off the ferromagnetic metals, thus reducing the wear on the surface of the magnetic roller I-6, reducing the frequency and cost of equipment maintenance, and improving the overall stability and reliability of the equipment.

[0071] By adjusting the rotation speed of the roller frame Ⅰ-10 and the rotation speed of the magnetic roller Ⅰ-6, adapting to different feeding amounts and feeding speeds, and flexibly adjusting the alternating working frequency and speed of the magnetic roller Ⅰ-6, the automated production line can better adapt to the complex needs of material sorting during transformer recycling and improve the sorting efficiency and quality.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automated production line for processing transformer waste metal, characterized in that: It includes an eddy current magnetic separator, which includes a feed hopper, a magnetic attraction component and a conveyor belt arranged in sequence, the magnetic attraction component includes a magnetic attraction roller and a roller frame, at least two magnetic attraction rollers are arranged at intervals and are rotatably installed on the roller frame respectively, the roller frame is rotatably installed on the frame of the eddy current magnetic separator, the roller frame switches the magnetic attraction roller on the blanking path from the feed hopper to the conveyor belt by rotation, an electromagnet is provided inside the magnetic attraction roller, so as to control the adsorption and release of ferromagnetic materials on the surface of the magnetic attraction roller by turning on and off the electromagnet, and a receiving box is provided under the magnetic attraction roller which is not on the blanking path from the feed hopper to the conveyor belt to receive the ferromagnetic materials released from the surface of the magnetic attraction roller after the electromagnet is powered off.

2. The transformer waste metal processing automated production line according to claim 1, characterized in that: A roller driving element is installed on the roller frame, and the output end of the roller driving element is connected to the magnetic roller to drive the magnetic roller to rotate around its axis.

3. The transformer waste metal processing automated production line according to claim 1 or 2, characterized in that: The at least two magnetic rollers are distributed around the rotation axis of the roller frame, and the roller frame is connected to a roller frame driving element.

4. The transformer waste metal processing automated production line according to claim 3, characterized in that: The electromagnets are distributed axially inside the magnetic attraction drum. When the electromagnets are energized, the electromagnetic field generated passes through the side wall of the magnetic attraction drum and acts on the ferromagnetic material.

5. The transformer waste metal processing automated production line according to claim 1, characterized in that: It also includes a metal inspection and weighing machine, which includes a metal detector and a conveyor belt 2 arranged in sequence. The end of the conveyor belt 1 is equipped with a magnetic roller to use the induced eddy current generated by the magnetic roller to sort the material. The conveyor belt 2 is equipped with a weighing sensor. One end of the conveyor belt 2 passes through the metal detector and connects to the output end of the conveyor belt 1 to receive the metal material sorted out by the end of the eddy current magnetic separator.

6. The transformer waste metal processing automated production line according to claim 5, characterized in that: The metal detector is provided with a detection area, and the path of the material conveyed by the second conveyor belt passes through the detection area.

7. The transformer waste metal processing automated production line according to claim 5 or 6, characterized in that: It also includes a bagging assembly machine and a bag sealing machine. The inlet end of the bagging assembly machine is connected to the two ends of the conveyor belt, and the outlet end of the bagging assembly machine is connected to the bag sealing machine.

8. The transformer waste metal processing automated production line according to claim 1, characterized in that: The feeding hopper is connected with a vibration motor, and the output end of the feeding hopper faces the first end of the conveyor belt.

9. A method for processing transformer waste metal by an automated production line, using the automated production line for processing transformer waste metal as claimed in any one of claims 1 to 8, characterized in that: include: The waste materials generated by the recycling transformer are fed into the feeding hopper and then dropped from the feeding hopper to the first end of the conveyor belt; The roller frame rotates to adjust the position of the magnetic roller, so that at least one magnetic roller is located on a material drop path from the feed hopper to the conveyor belt as a working magnetic roller, the electromagnet in the working magnetic roller remains energized, the working magnetic roller rotates and ferromagnetic materials are continuously attached to the surface; After the ferromagnetic material adsorbed on the surface of the working magnetic roller reaches a set amount, the roller frame rotates to adjust the position of the magnetic roller, so that at least one working magnetic roller is switched to a non-working position, and at least one magnetic roller in the non-working position is moved to a material drop path from the feeding hopper to the conveyor belt as a working magnetic roller; When the magnetic roller with the ferromagnetic material adsorbed on its surface reaches the non-working position, the internal electromagnet is powered off, and the ferromagnetic material adsorbed on the surface of the magnetic roller loses its adsorption effect and falls into the receiving box; The switching between the cyclic working magnetic suction roller and the non-working magnetic suction roller can realize the cyclic screening of ferromagnetic materials in the material.

10. The processing method of the transformer waste metal processing automated production line according to claim 9, characterized in that: The switching frequency of the working magnetic roller, the rotation speed of the magnetic roller and / or the working parameters of the electromagnet are controlled according to the flow rate of the material conveyed from the feeding hopper to the conveyor belt.

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