Eddy current separation device

Abstract

The present invention provides an eddy current sorting device, comprising: a magnetic conductor; a magnetic roller; a first conveying device; a second conveying device; a negative pressure adsorption device; the first conveying device is provided with the magnetic conductor and the magnetic roller, the magnetic conductor is arranged along the conveying direction of the first conveying device for a distance, the magnetic conductor is magnetically connected to the magnetic roller, the alternating current generated by the rotation of the magnetic roller can generate eddy current in the metal material passing through the magnetic conductor; the second conveying device is arranged above the first conveying device and corresponds to the magnetic conductor, the second conveying device is connected to a first accommodating portion for receiving metal materials, and the negative pressure adsorption device is connected to the second conveying device so as to adsorb the metal material driven by the eddy current and bounced to the second conveying device. The application of this technical solution can provide an eddy current sorting device that can improve sorting efficiency.

Description

Technical Field

[0001] The invention relates to an eddy current separation device. Background Art

[0002] At present, domestic eddy current separators can be divided into concentric and eccentric eddy current separators according to their structures. Concentric and eccentric eddy current separators mainly use the conductivity of various materials. The separation principle is to use the high-speed rotation of the magnetic drum composed of magnets, cut the magnetic flux lines during the rotation process, and generate an alternating magnetic field. When the metal with electrical conductivity passes through the magnetic field, it will induce eddy currents in the metal. This eddy current itself will generate an alternating magnetic field and is opposite to the magnetic field generated by the rotation of the magnetic drum, so that non-ferrous metals (such as aluminum, copper, etc.) will jump out 90 degrees upward along their conveying direction due to the opposite effect, while non-metallic materials with poor conductivity will not generate the opposite magnetic field, thereby achieving the purpose of separation.

[0003] The concentric eddy current separator has the advantages of good sorting effect and large processing capacity because the magnetic field induction area is a fan. However, when the iron impurities are not cleaned up, the iron impurities are easy to penetrate between the belt and the magnetic roller and cannot be discharged, thus causing damage to the belt and the roller. In order to solve the shortcomings of the concentric eddy current separator, predecessors designed an eccentric eddy current separator as an improvement. The eccentric eddy current separator can avoid the fatal defect of the traditional concentric magnetic roller that is easy to penetrate iron impurities. Moreover, since the eddy current separator can adjust the position of the eccentric magnetic roller, the starting point of the material can be controlled to improve the sorting rate of small materials. However, since the magnetic field induction area of ​​the eccentric eddy current separator is a line, it is not suitable for the sorting of large flow materials, which is easy to cause missed selection and low efficiency. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide an eddy current sorting device which can improve the sorting efficiency, avoid the problem of damage of the concentric eddy current sorter due to the infiltration of iron impurities and effectively increase the position difference between the dropping points of metal materials and non-metallic materials, thereby achieving more accurate sorting.

[0005] In order to solve the above technical problems, the present invention provides an eddy current separation device, comprising:

[0006] Magnetic conductor;

[0007] Magnetic roller;

[0008] a first conveying device;

[0009] a second conveying device;

[0010] Negative pressure adsorption device;

[0011] The first conveying device is provided with the magnetic conductor and the magnetic roller. The magnetic conductor is arranged along the conveying direction of the first conveying device for a distance. The magnetic conductor is magnetically connected to the magnetic roller. The alternating current generated by the rotation of the magnetic roller can generate eddy current in the metal material passing through the magnetic conductor.

[0012] The second conveying device is arranged above the first conveying device and corresponds to the magnetic conductor. The second conveying device is connected to a first accommodating portion for receiving metal materials. The negative pressure adsorption device is connected to the second conveying device so as to adsorb the metal materials that are bounced up by the eddy current to the second conveying device.

[0013] In a more preferred embodiment, the first conveying device includes a first conveying plane for receiving metallic materials and non-metallic materials, and the magnetic conductor is located below the first conveying plane.

[0014] In a more preferred embodiment, the magnetic roller rotates below the magnetic conductor, the magnetic conductor includes an extension plane corresponding to the first conveying plane, and the magnetic conductor also includes a magnetic arc surface corresponding to the magnetic roller.

[0015] In a more preferred embodiment, the magnetic conductor includes a plurality of magnetic conductors and a plurality of insulators, the magnetic conductors and insulators are alternately arranged and connected, and the magnetic roller is magnetically connected to the magnetic conductors.

[0016] In a more preferred embodiment, the magnetic roller includes a plurality of N-pole magnets and a plurality of S-pole magnets, and the N-pole magnets and S-pole magnets are alternately arranged along the circumference of the magnetic roller.

[0017] In a more preferred embodiment, the first conveying device includes an active roller, a passive roller and a conveyor belt, the conveyor belt is cyclically connected between the active roller and the passive roller, the conveyor belt is used to receive metal materials and non-metallic materials, the active roller is used to drive the conveyor belt to move, and the magnetic conductor and the magnetic roller are arranged close to the passive roller.

[0018] In a more preferred embodiment, the first conveying device also includes a frame, and the magnetic roller is rotatably arranged on the frame. The frame also includes a telephoto groove extending along the conveying direction of the first conveying device, and the magnetic roller and the magnetic conductor can be adjusted to slide on the telephoto groove respectively to adjust the position of the magnetic roller and the magnetic conductor relative to the first conveying device.

[0019] In a more preferred embodiment, the second conveying device includes a second conveying plane for adsorbing metal materials, the second conveying plane includes a plurality of adsorption holes, and the negative pressure adsorption device is fluidically connected to the adsorption holes.

[0020] In a more preferred embodiment, it further comprises a second accommodating portion for receiving non-metallic materials, and the first conveying device is connected to the second accommodating portion.

[0021] In a more preferred embodiment, it also includes a material box and a guide plate; the material box includes the first accommodating portion and the second accommodating portion; one end of the guide plate is connected to the first accommodating portion, and the upper surface of the guide plate corresponds to the end of the second conveying device to receive the falling metal material; the end of the first conveying device corresponds to the second accommodating portion of the material box to receive the non-metallic material.

[0022] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0023] 1. The first conveying device is provided with the magnetic conductor and the magnetic roller, the magnetic conductor is magnetically connected to the magnetic roller, the alternating current generated by the rotation of the magnetic roller can generate eddy current in the metal material passing through the magnetic conductor, the magnetic roller is not directly close to or in contact with the first conveying device, and is indirectly magnetically conductive through the magnetic conductor, thereby avoiding the problem of damage to the concentric eddy current separator due to the infiltration of iron impurities (there is no relative movement between the magnetic conductor and the first conveying device, and even if iron impurities enter between the magnetic conductor and the first conveying device, it will not cause damage to both);

[0024] The magnetic conductor is arranged to extend a distance along the conveying direction of the first conveying device, thereby increasing the magnetic field sensing area. While avoiding the fatal defect of the traditional concentric magnetic roller that iron impurities are easily infiltrated, the increase in the magnetic field sensing area makes it suitable for the sorting of large flow materials, is not prone to omissions, has high efficiency, and overcomes the defects of concentric eddy current separators and eccentric eddy current separators.

[0025] 2. The second conveying device is arranged above the first conveying device and corresponds to the magnetic conductor. The second conveying device is connected to the first accommodating portion for receiving metal materials. The negative pressure adsorption device is connected to the second conveying device so as to adsorb the metal materials bounced by the eddy current to the second conveying device. This can effectively avoid the metal materials and non-metal materials from falling to similar points after sorting, and can effectively increase the position difference between the falling points of the metal materials and the non-metal materials, thereby achieving more accurate sorting.

[0026] 3. The first conveying device also includes a frame, and a magnetic roller is rotatably arranged on the frame. The frame also includes a telephoto groove extending along the conveying direction of the first conveying device. The magnetic roller and the magnetic conductor can be adjusted to slide on the telephoto groove respectively to adjust the positions of the magnetic roller and the magnetic conductor relative to the first conveying device, so as to control the starting point of the material, thereby improving the sorting rate of small materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional schematic diagram of an eddy current separation device in a preferred embodiment of the present invention;

[0028] Figure 2 It is a three-dimensional cross-sectional schematic diagram of an eddy current separation device in a preferred embodiment of the present invention;

[0029] Figure 3 It is a three-dimensional schematic diagram of a second conveying device and a negative pressure adsorption device in a preferred embodiment of the present invention;

[0030] Figure 4 It is a partial schematic diagram of the connection between the telephoto groove and the magnetic roller in a preferred embodiment of the present invention;

[0031] Figure 5 It is a cross-sectional schematic diagram of the connection between the magnetic roller, the magnetic conductor and the conveyor belt in the preferred embodiment of the present invention;

[0032] Figure 6 It is a schematic diagram of a magnetic conductor in a preferred embodiment of the present invention, showing a magnetic conductor and an insulator. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Certain directional terms used to describe the drawings below, such as "inside", "outside", "above", "below" and other directional terms, will be understood to have their normal meanings and refer to those directions involved when the drawings are normally viewed. Unless otherwise specified, the directional terms described in this specification are basically in accordance with the conventional directions understood by those skilled in the art.

[0035] The terms "first", "first", "second", "second" and the like used in the present invention do not indicate any order, quantity or importance, but are used to distinguish one component from other components.

[0036] See also Figure 1-Figure 6, an eddy current separation device 100, the eddy current separation device 100 includes a first conveying device 10, the first conveying device 10 includes a frame 11, an active roller 12, a passive roller 13 and a conveyor belt 14. The two ends of the active roller 12 and the passive roller 13 are respectively rotatably connected to the two side plates 111 of the frame 11, and the conveyor belt 14 is cyclically connected to the active roller 12 and the passive roller 13. In this embodiment, the active roller 12 is also connected to a motor to drive the active roller 12 to rotate, and the rotation of the active roller 12 drives the conveyor belt 14 to move between the active roller 12 and the passive roller 13. The upper surface of the conveyor belt 14 defines a first conveying plane 141, and the end of the conveyor belt 14 close to the active roller 12 receives mixed metal materials and non-metal materials. The first conveying plane 141 is used to convey the mixed metal materials and non-metal materials to the end of the conveyor belt 14 close to the passive roller 13, that is, the end of the first conveying device 10 along its conveying direction. In this embodiment, the first conveying device 10 includes three passive rollers 13 arranged from top to bottom.

[0037] The eddy current separation device 100 also includes a magnetizer 30 and a magnetic roller 40, which are arranged on the first conveying device 10 and close to the passive roller 13. Specifically, the magnetizer 30 is located below the first conveying plane 141, and the magnetic roller 40 is located below the magnetizer 30. One end of the magnetic roller 40 is also connected to a motor. The magnetizer 30 is arranged to extend a distance along the conveying direction of the first conveying device 10, and the magnetic roller 40 is magnetically connected to the magnetizer 30. The alternating current generated by the magnetic roller 40 can generate eddy current in the metal material passing through the magnetizer 30. The eddy current itself will generate an alternating magnetic field and is opposite to the magnetic field generated by the rotation of the magnetic roller 40, so that the metal material (such as aluminum, copper, etc.) will be driven by the upward repulsive force at 90 degrees or approximately 90 degrees along the conveying direction due to the opposite effect, and jump up, while the non-metallic material with poor conductivity will not generate the opposite magnetic field. The non-metallic material only moves along the conveying direction of the first conveying device 10 until the end of the first conveying device 10.

[0038] The magnetic roller 40 rotates below the magnetizer 30, and the magnetizer 30 includes an extension plane 31 corresponding to the first conveying plane 141, and the magnetizer 30 also includes a magnetic arc surface 32 corresponding to the magnetic roller 40. The magnetic force of the magnetic roller 40 can be transmitted to the magnetizer 30, and then the magnetic force is transmitted to the metal material on the conveyor belt 14 through the magnetizer 30. Because the magnetizer 30 is arranged along the conveying direction of the first conveying device 10 for a distance, the contact area between the magnetic roller 40 and the first conveying plane 141 (that is, the conveyor belt 14) is increased, thereby generating a wider magnetic force range, which is not easy to cause missed selection, and can effectively improve the sorting efficiency of the eddy current sorting device 100.

[0039] The eddy current separation device 100 also includes a second conveying device 20 and a negative pressure adsorption device 50. The second conveying device 20 includes two rolling rollers 21 and an adsorption conveyor belt 22 cyclically connected between the two rolling rollers 21. The second conveying device 20 is arranged above the first conveying device 10 and corresponds to the magnetic conductor 30. Specifically, the downward side of the adsorption conveyor belt defines a second conveying plane 221. One side of the second conveying plane 221 corresponds to the magnetic conductor 30, and the other side corresponds to the first accommodating portion 61 for receiving metal materials. The negative pressure adsorption device 50 is connected to the second conveying device 20 so that the metal materials driven by the eddy current can be adsorbed to the second conveying device 20. A plurality of adsorption holes 222 are provided on the adsorption conveyor belt 22 so that the second conveying plane 221 includes a plurality of adsorption holes 222. The negative pressure adsorption device 50 is fluidically connected to the adsorption holes 222. In this embodiment, the negative pressure adsorption device 50 can be a common vacuum device, or the negative pressure adsorption device 50 can also be a common exhaust fan, etc. The adsorption hole 222 generates an adsorption force on the second conveying plane 221, and the metal material jumping upward enters the action range of the negative pressure adsorption device 50 and is subjected to an upward force. The metal material subjected to a larger force will be captured by the second conveying device 20 and move along the second conveying device 20 to enter the first accommodating portion 61.

[0040] The eddy current separator 100 further includes a second accommodating portion 62 for receiving non-metallic materials, and the first conveying device 10 is connected to the second accommodating portion 62. The eddy current separator 100 further includes a material box 60 and a guide plate 70; the material box 60 includes the first accommodating portion 61 and the second accommodating portion 62; one end of the guide plate 70 is connected to the first accommodating portion 61, and the upper surface of the guide plate 70 corresponds to the end of the second conveying device 20 to receive the falling metal material; the end of the first conveying device 10 corresponds to the second accommodating portion 62 of the material box 60 connected to receive the non-metallic material.

[0041] See also Figure 6 , the magnetizer 30 includes a plurality of magnetizers 33 and a plurality of insulators 34, the magnetizers 33 and insulators 34 are alternately arranged and connected, the magnetic roller 40 is magnetically connected to the magnetizer 33, in this embodiment, the magnetizer 33 is iron, the insulator 34 can be plastic, etc., the magnetizer 33 and insulator 34 are alternately arranged and connected along the width direction of the magnetizer 30. Referring to the figure, the magnetic roller 40 includes a plurality of N-pole magnets and a plurality of S-pole magnets, the N-pole magnets and S-pole magnets are alternately arranged along the circumference of the magnetic roller 40, the N-pole magnets and S-pole magnets can be permanent magnets or electromagnets. The magnetic roller 40 continuously cuts the magnetic flux lines during rotation to generate alternating current, and generates eddy current in the metal material, thereby separating the metal material from the non-metal material.

[0042] See also Figure 4 , the magnetic roller 40 is rotatably arranged on the frame 11, and the frame 11 also includes a telephoto groove 112 extending along the conveying direction of the first conveying device 10, and the magnetic roller 40 and the magnetizer 30 are respectively adjustable and slide on the telephoto groove 112 to adjust the positions of the magnetic roller 40 and the magnetizer 30 relative to the first conveying device 10. Specifically, the two ends of the magnetic roller 40 and the magnetizer 30 are respectively connected to the telephoto groove 112 of the frame 11. When it is necessary to adjust the magnetic roller 40 and the magnetizer 30, the two ends of the magnetic roller 40 and the magnetizer 30 can be driven to slide on the telephoto groove 112 to change the positions of the magnetic roller 40 and the magnetizer 30. In this embodiment, the two ends of the magnetic roller 40 are respectively connected to bearing parts 41, and the bearing parts 41 can slide and be fixed along the telephoto groove 112. For example, the bearing part 41 can be fixed by connecting to the telephoto groove 112 of the frame 11 by screws, and the axis of the magnetic roller 40 slides on one of the telephoto grooves 112.

[0043] When in use, first, the mixed metal materials and non-metal materials are placed on the first conveying device 10; second, the first conveying device 10 is started, and the mixed metal materials and non-metal materials move along with the conveyor belt 14 until they pass through the magnetizer 30. The alternating current generated by the magnetic roller 40 can generate eddy currents in the metal materials passing through the magnetizer 30. The eddy currents themselves will generate alternating magnetic fields and are opposite to the magnetic field generated by the rotation of the magnetic roller 40, so that the metal materials (such as aluminum, copper, etc.) will be driven by the upward repulsive force at 90 degrees or approximately 90 degrees along the conveying direction due to the opposite effect. The non-metallic material jumps up, and continues to move to the second accommodating portion 62 along with the first conveying device 10; thirdly, the metal material that jumps up enters the action range of the negative pressure adsorption device 50, and is subjected to an upward force. The metal material subjected to a larger force will be captured by the second conveying device 20, and moves along the second conveying device 20 to enter the first accommodating portion 61, while the non-metallic material on the conveyor belt 14 is subjected to very little force due to the rapid attenuation of wind force with distance, and will not move upward with the wind force, thereby promoting the separation of metal material and non-metallic material, and the separation of metal material and non-metallic material is completed.

[0044] The above is only a preferred specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. An eddy current separation device, characterized in that: include: Magnetic conductor; Magnetic roller; a first conveying device; a second conveying device; Negative pressure adsorption device; The first conveying device is provided with the magnetic conductor and the magnetic roller. The magnetic conductor is arranged along the conveying direction of the first conveying device for a distance. The magnetic conductor is magnetically connected to the magnetic roller. The alternating current generated by the rotation of the magnetic roller can generate eddy current in the metal material passing through the magnetic conductor. The second conveying device is arranged above the first conveying device and corresponds to the magnetic conductor, the second conveying device is connected to the first accommodating portion for receiving the metal material, and the negative pressure adsorption device is connected to the second conveying device so as to adsorb the metal material bounced by the eddy current to the second conveying device; The first conveying device comprises a first conveying plane for receiving metal materials and non-metal materials, and the magnetic conductor is located below the first conveying plane; The magnetic roller rotates below the magnetic conductor, the magnetic conductor includes an extension plane corresponding to the first conveying plane, and the magnetic conductor also includes a magnetic arc surface corresponding to the magnetic roller; The first conveying device includes an active roller, a passive roller and a conveyor belt, wherein the conveyor belt is cyclically connected between the active roller and the passive roller, the conveyor belt is used to receive metal materials and non-metal materials, the active roller is used to drive the conveyor belt to move, and the magnetic conductor and the magnetic roller are arranged close to the passive roller.

2. An eddy current separation device according to claim 1, characterized in that: The magnetizer includes a plurality of magnetizers and a plurality of insulators. The magnetizers and insulators are alternately arranged and connected, and the magnetic roller is magnetically connected to the magnetizers.

3. An eddy current separation device as claimed in claim 2, characterized in that: The magnetic roller includes a plurality of N-pole magnets and a plurality of S-pole magnets, and the N-pole magnets and the S-pole magnets are alternately arranged along the circumferential direction of the magnetic roller.

4. The eddy current separation device according to claim 1, characterized in that: The first conveying device also includes a frame, and a magnetic roller is rotatably arranged on the frame. The frame also includes a telephoto groove extending along the conveying direction of the first conveying device. The magnetic roller and the magnetic conductor can be adjusted to slide on the telephoto groove respectively to adjust the position of the magnetic roller and the magnetic conductor relative to the first conveying device.

5. An eddy current separation device according to any one of claims 1 to 4, characterized in that: The second conveying device comprises a second conveying plane for adsorbing metal materials, the second conveying plane comprises a plurality of adsorption holes, and the negative pressure adsorption device is fluidically connected to the adsorption holes.

6. An eddy current separation device as claimed in claim 5, characterized in that: It also includes a second receiving portion for receiving non-metallic materials, and the first conveying device is connected to the second receiving portion.

7. An eddy current separation device as claimed in claim 6, characterized in that: It also includes a material box and a guide plate; the material box includes the first accommodating portion and the second accommodating portion; one end of the guide plate is connected to the first accommodating portion, and the upper surface of the guide plate corresponds to the end of the second conveying device so as to receive the falling metal material; the end of the first conveying device corresponds to the second accommodating portion of the material box so as to receive the non-metallic material.

Images