Inner magnetic roller and magnetic roller structure of eddy current separator

Abstract

The utility model belongs to the technical field of eddy current sorting machines, and particularly relates to an inner magnetic roller and a magnetic roller structure of an eddy current sorting machine. According to the inner magnetic roller disclosed by the utility model, the axial movement of the non-porous tile-shaped magnetic block is prevented through the two magnetic system check rings, and the non-porous tile-shaped magnetic block and the magnetic system check rings are fixed by the carbon fiber yarns, so that the non-porous tile-shaped magnetic block does not need to be perforated and is fixed on the magnetic conductive cylinder through a bolt; the inner magnetic roller with low magnetic energy loss, safety, reliability and high magnetic field intensity can be effectively formed. And through cooperative arrangement of the magnetic conduction cylinder, the driving half shaft and the fixed half shaft, the inner magnetic roller can rotate at a higher speed and rotate more stably. According to the magnetic roller structure, the inner magnetic roller, the inner magnetic roller support, the outer roller, the magnetic roller structure support and the magnetic declination angle adjusting mechanism are arranged in a matched mode, the declination angle of a magnetic system can be conveniently adjusted, the magnetic roller structure can adapt to separation operation of materials with different components, performance is greatly improved, and the recovery rate can be remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of eddy current separators, in particular to an inner magnetic roller and a magnetic drum structure of an eddy current separator. Background Art

[0002] Eddy current separators for nonferrous metals utilize Lenz's law, the magnetic circuit law, and the principle of electromagnetic induction to separate nonferrous metals. The high-frequency alternating magnetic field generated by a magnetic drum induces eddy currents in the conductor. The resulting magnetic field is opposite to the original field, and the metal is pulled out of the separator due to the reaction force, achieving separation. Eddy current separators are widely used in recycling various industrial waste, domestic garbage, plastic waste, glass waste, and waste electrical and electronic equipment.

[0003] The inner magnetic roller in the magnetic drum of an existing eddy current separator generally uses a traditional integral through-shaft connected to the outer magnetic cylinder via a key, and a tile-shaped magnetic block with holes is fixed to the magnetic cylinder via bolts. The weight of the structure in which the integral through-shaft is connected to the magnetic cylinder via a key is also relatively high. The key connection method may also cause the inner magnetic roller to have a weight imbalance defect, which will reduce the rotation speed of the inner magnetic roller. The holes opened on the tile-shaped magnetic block for passing the bolts cause the formed inner magnetic roller to have a large magnetic energy loss, and thus the high-frequency alternating magnetic field generated by the formed magnetic roller is also low. Therefore, the performance of the magnetic drum with an inner magnetic roller using the above structure is relatively low, and the corresponding eddy current separator has a relatively poor recovery rate of small-particle metals. Utility Model Content

[0004] In view of the above problems, the purpose of the present invention is to provide an inner magnetic roller and a magnetic drum structure of an eddy current separator.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] An inner magnetic roller comprises a magnetic conductive cylinder, a driving half shaft, a fixed half shaft, a tile-shaped magnetic block without holes, a magnetic retaining ring, and carbon fiber wire;

[0007] Both ends of the magnetic conductive cylinder in the length direction are open;

[0008] The driving half shaft is divided into an embedded shaft portion A, a limit stop edge portion A, and a connecting shaft portion A, which are sequentially connected together. The embedded shaft portion A of the driving half shaft is embedded in an opening at one end of the magnetic conductive cylinder and connected to the magnetic conductive cylinder. The end surface of the opening at one end of the magnetic conductive cylinder abuts against the limit stop edge portion A of the driving half shaft. The connecting shaft portion A of the driving half shaft is located outside the magnetic conductive cylinder.

[0009] The fixed half-shaft is divided into an embedded shaft portion B, a limit stop edge portion B, and a connecting shaft portion B, which are connected together in sequence. The embedded shaft portion B of the fixed half-shaft is embedded in the opening at the other end of the magnetic conductive cylinder and connected to the magnetic conductive cylinder. The end surface of the opening at the other end of the magnetic conductive cylinder abuts against the limit stop edge portion B of the driving half-shaft. The connecting shaft portion B of the driving half-shaft is located outside the magnetic conductive cylinder.

[0010] A magnetic retaining ring is provided at each end position on the outer circumference of the magnetic conductive cylinder, and a plurality of evenly arranged non-porous tile-shaped magnetic blocks are provided on the outer circumference of the magnetic conductive cylinder between the two magnetic retaining rings. The outer circumference of the whole formed by the non-porous tile-shaped magnetic blocks and the magnetic retaining rings after the arrangement is completed is circumferentially wound with the carbon fiber filaments coated with glue.

[0011] The magnetic conductive cylinder is made of seamless steel pipe.

[0012] The embedded shaft portion A of the driving half shaft is fastened to the opening at one end of the magnetic cylinder by heat-fitting, and the embedded shaft portion B of the fixed half shaft is fastened to the opening at the other end of the magnetic cylinder by heat-fitting.

[0013] Each of the magnetic system retaining rings is fixedly connected to the outer peripheral surface of the magnetic conductive cylinder by welding.

[0014] A magnetic drum structure of an eddy current separator, comprising the aforementioned inner magnetic drum, and also comprising an inner magnetic drum bracket, an outer drum, a magnetic drum structure support and a magnetic deflection adjustment mechanism, characterized in that: a connecting shaft portion A of the driving half shaft of the inner magnetic drum is rotatably connected to one of the inner magnetic drum brackets and is used to be connected to the driving shaft of an external driving motor, a connecting shaft portion B of the fixed half shaft of the inner magnetic drum is rotatably connected to the other inner magnetic drum bracket, the outer drum is a hollow structure with openings at both ends, an opening at one end of the outer drum is rotatably connected to one of the inner magnetic drum brackets, and an opening at the other end of the outer drum is rotatably connected to the other inner magnetic drum bracket, the outer drum cover is arranged on the outside of the inner magnetic drum, and an axial centerline of the inner magnetic drum as a whole is parallel to and not collinear with an axial centerline of the outer drum;

[0015] A connecting shaft portion C is extended from the outer end surface of each inner magnetic roller bracket, and the axial center line of the connecting shaft portion C of each inner magnetic roller bracket is collinear with the axial center line of the outer roller. The connecting shaft portion C of each inner magnetic roller bracket is rotatably connected to a corresponding magnetic roller structure support, and each magnetic roller structure support is connected to an external frame. The magnetic deflection adjustment mechanism is connected to the connecting shaft portion C of an inner magnetic roller bracket located near the fixed half-axis of the inner magnetic roller, and the magnetic deflection adjustment mechanism is used to drive the whole composed of the two inner magnetic roller brackets and the inner magnetic roller to rotate relative to the magnetic roller structure support.

[0016] The adjusting screw is fixedly mounted on the adjusting base, and the adjusting screw is installed in a fixed position along the adjusting cam path, wherein the adjusting screw is installed in a fixed position along the adjusting cam path, and the adjusting screw is installed in a fixed position along the adjusting cam path.

[0017] An angle indicating scale plate is provided on one end of the crank near the connecting shaft portion C of the inner magnetic roller bracket to which the crank is connected, and a pointer used in conjunction with the angle indicating scale plate is provided on the magnetic roller structure support located at the crank.

[0018] The connecting shaft portion A of the driving half shaft of the inner magnetic roller is rotatably connected to the corresponding inner magnetic roller bracket through the bearing A, and the connecting shaft portion B of the fixed half shaft of the inner magnetic roller is rotatably connected to the corresponding inner magnetic roller bracket through the bearing A. Each of the inner magnetic roller brackets is also provided with a bearing pressure cover for limiting the corresponding bearing A and sealing the location where the bearing A is set. A visual glass window is provided on one of the bearing pressure covers located near the fixed half shaft of the inner magnetic roller.

[0019] The bearing gland is provided with a thermistor for detecting the temperature of a chamber where the adjacent bearing A is provided.

[0020] The openings at both ends of the outer drum are rotatably connected to the corresponding inner magnetic roller brackets through bearings B.

[0021] The advantages and positive effects of this utility model are:

[0022] 1. The inner magnetic roller of the utility model prevents the axial movement of the non-porous tile-shaped magnetic block through two magnetic retaining rings, and the non-porous tile-shaped magnetic block and the magnetic retaining ring are fixed by carbon fiber wire. There is no need to drill holes in the non-porous tile-shaped magnetic block and fix it to the magnetic cylinder by bolts, which can effectively form a safe, reliable and high magnetic field strength inner magnetic roller with low magnetic energy loss.

[0023] 2. The inner magnetic roller of the utility model realizes the hollowing of the inner magnetic roller through the coordinated arrangement of the magnetic tube, the driving half-shaft and the fixed half-shaft. Compared with the traditional integral through-shaft structure in which the magnetic tube is connected by a key, the overall mass is effectively reduced and the weight imbalance defect caused by the key connection is avoided, which can make the inner magnetic roller rotate at a higher speed and more stably.

[0024] 3. The magnetic drum structure of the utility model can conveniently adjust the magnetic system deflection through the coordinated arrangement of the inner magnetic roller, the inner magnetic roller bracket, the outer drum, the magnetic drum structure support and the magnetic deflection adjustment mechanism, and can adapt to the sorting operations of materials with different components. The performance is greatly improved, the structure is simple, the operation is convenient, and the maintenance is easy. It can significantly improve the recovery rate of small-particle metals in garbage and waste materials by the corresponding eddy current separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the inner magnetic roller of the present utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the magnetic drum structure of the present invention;

[0027] Figure 3 This is a side structural diagram of the magnetic drum structure of the present invention;

[0028] Figure 4 for Figure 2 A magnified view of point A;

[0029] Figure 5 for Figure 3 Enlarged view of point B.

[0030] In the figure: 1 is a magnetic cylinder, 2 is a driving half shaft, 201 is an embedded shaft portion A, 202 is a limit stop edge portion A, 203 is a connecting shaft portion A, 3 is a fixed half shaft, 301 is an embedded shaft portion B, 302 is a limit stop edge portion B, 303 is a connecting shaft portion B, 4 is a non-porous tile-shaped magnetic block, 5 is a magnetic system retaining ring, and 6 is a carbon fiber wire;

[0031] 7 is the inner magnetic roller bracket, 701 is the connecting shaft C, 8 is the outer roller, 9 is the magnetic roller structure support, 10 is the crank, 11 is the adjustment connecting rod, 1101 is the external threaded part, 12 is the adjustment nut, 13 is the adjustment connecting rod fastening seat, 14 is the angle indicating scale plate, 15 is the pointer, 16 is the bearing A, 17 is the bearing cover, 18 is the thermistor, and 19 is the bearing B;

[0032] 001 is the inner magnetic roller, 002 is the drive motor, and 003 is the coupling. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 The utility model is further described in detail.

[0034] An inner magnetic roller, such as Figure 1 As shown, this embodiment includes a magnetic tube 1, a driving half shaft 2, a fixed half shaft 3, a non-hole tile-shaped magnetic block 4, a magnetic retaining ring 5, and carbon fiber wire 6.

[0035] In this embodiment, both ends of the magnetic tube 1 in the longitudinal direction are open, and the magnetic tube 1 is made of a seamless steel pipe.

[0036] In this embodiment, the drive shaft 2 is comprised of an embedded shaft portion A 201, a stopper edge portion A 202, and a connecting shaft portion A 203, which are sequentially connected. The embedded shaft portion A 201, the stopper edge portion A 202, and the connecting shaft portion A 203 form an integral structure. In this embodiment, the embedded shaft portion A 201 of the drive shaft 2 is embedded in an opening at one end of the magnetic cylinder 1 and connected to the magnetic cylinder 1. The end surface of the opening at one end of the magnetic cylinder 1 abuts the stopper edge portion A 202 of the drive shaft 2. The connecting shaft portion A 203 of the drive shaft 2 is located outside the magnetic cylinder 1.

[0037] In this embodiment, the fixed half-shaft 3 comprises an embedded shaft portion B 301, a stopper edge portion B 302, and a connecting shaft portion B 303, which are sequentially connected. The embedded shaft portion B 301, the stopper edge portion B 302, and the connecting shaft portion B 303 form an integral structure. In this embodiment, the embedded shaft portion B 301 of the fixed half-shaft 3 is embedded in the opening at the other end of the magnetic cylinder 1 and connected to the magnetic cylinder 1. The end surface of the opening at the other end of the magnetic cylinder 1 abuts the stopper edge portion B 302 of the driving half-shaft 2. The connecting shaft portion B 303 of the driving half-shaft 2 is located outside the magnetic cylinder 1.

[0038] A magnetic retaining ring 5 is provided at each end of the outer circumference of the magnetic tube 1. A plurality of evenly arranged non-porous tile-shaped magnetic blocks 4 are provided on the outer circumference of the magnetic tube 1 between the two magnetic retaining rings 5. The arrangement and setting of the non-porous tile-shaped magnetic blocks 4 in this embodiment adopts the existing technology. After the non-porous tile-shaped magnetic blocks 4 and the magnetic retaining rings 5 ​​are set, the outer circumference of the whole formed by the arrangement is circumferentially wound with carbon fiber filaments 6 coated with glue. The carbon fiber filaments 6 are commercially available high-strength polyacrylonitrile-based carbon fiber filament products, and the glue used is a structural glue commonly used in the existing technology.

[0039] Two magnetic retaining rings 5 ​​prevent axial movement of the non-porous tile-shaped magnetic block 4, and carbon fiber filaments 6 secure the non-porous tile-shaped magnetic block 4 and the magnetic retaining ring 5. This eliminates the need for drilling holes in the non-porous tile-shaped magnetic block 4 and allows bolts to be fixed to the magnetic cylinder 1, effectively forming a safe, reliable, high-magnetic-field-strength inner magnetic roller 001 with low magnetic energy loss. The coordinated arrangement of the magnetic cylinder 1, the driving half-shaft 2, and the fixed half-shaft 3 achieves a hollow interior of the inner magnetic roller 001. Compared to the traditional integral through-shaft structure connected to the magnetic cylinder via a key, this effectively reduces the overall mass and avoids the unbalanced weight defects caused by the key connection, enabling the inner magnetic roller 001 to rotate at a higher speed and with more stable rotation.

[0040] Specifically, in this embodiment, the embedded shaft portion A 201 of the driving half shaft 2 is fastened to the opening at one end of the magnetic tube 1 by heat-fitting, and the embedded shaft portion B 301 of the fixed half shaft 3 is fastened to the opening at the other end of the magnetic tube 1 by heat-fitting. Each magnetic retaining ring 5 is fixed to the outer peripheral surface of the magnetic tube 1 by welding. During installation, one of the magnetic retaining rings 5 ​​is welded first, and then the hole-free tile-shaped magnetic blocks 4 are arranged and placed, and then the other magnetic retaining ring 5 is welded and fixed. The connection is convenient and avoids affecting the magnetic field of the inner magnetic roller 001.

[0041] A magnetic drum structure of an eddy current separator, such as Figure 1-5 As shown, the device comprises the aforementioned inner magnetic roller 001, as well as an inner magnetic roller support 7, an outer roller 8, a magnetic roller structural support 9, and a magnetic deflection adjustment mechanism. In this embodiment, the connection structure between the inner magnetic roller 001, the inner magnetic roller support 7, the outer roller 8, and the magnetic roller structural support 9 can be based on existing technologies. The connecting shaft portion A 203 of the driving half-shaft 2 of the inner magnetic roller 001 is rotatably connected to one inner magnetic roller support 7 and is used to connect to the drive shaft of the external drive motor 002 via a coupling 003. The connecting shaft portion B 303 of the fixed half-shaft 3 of the inner magnetic roller 001 is rotatably connected to the other inner magnetic roller support 7.

[0042] The outer drum 8 is a hollow structure with two openings at both ends. The opening at one end of the outer drum 8 is rotatably connected to one of the inner magnetic roller supports 7 via a bearing B19, while the opening at the other end of the outer drum 8 is rotatably connected to the other inner magnetic roller support 7 via a bearing B19. The outer drum 8 is positioned over the outer surface of the inner magnetic roller 001. The overall axial centerline of the inner magnetic roller 001 is parallel to, but not collinear with, the axial centerline of the outer drum 8. This means that the center of the inner magnetic roller 001 is eccentric to the center of the outer drum 8. Bearing B19 is a commercially available product. The drive motor 002 drives the inner magnetic roller 001 at high speed, thereby generating a high-frequency alternating magnetic field on the outer surface of the outer drum 8. The outer drum 8 is driven by the conveyor belt of the eddy current separator to separate the metal material on the conveyor belt. The connection between the outer drum 8 and the conveyor belt of the eddy current separator is conventional.

[0043] A connecting shaft portion C 701 is extended from the outer end surface of each inner magnetic roller bracket 7. The axial centerline of the connecting shaft portion C 701 of each inner magnetic roller bracket 7 is collinear with the axial centerline of the outer roller 8. The connecting shaft portion C 701 of each inner magnetic roller bracket 7 is rotatably connected to a corresponding magnetic roller structure support 9. Each magnetic roller structure support 9 is fixed to the frame of an external eddy current separator. The magnetic deflection adjustment mechanism is connected to the connecting shaft portion C 701 of an inner magnetic roller bracket 7 located near the fixed half-shaft 3 of the inner magnetic roller 001. The magnetic deflection adjustment mechanism is used to drive the entire body composed of the two inner magnetic roller brackets 7 and the inner magnetic roller 001 to rotate relative to the magnetic roller structure support 9, thereby achieving adjustment of the magnetic system deflection.

[0044] Specifically, if Figure 2 and Figure 3 As shown, the magnetic deflection angle adjustment mechanism in this embodiment includes a crank 10, an adjustment link 11, an adjustment nut 12 and an adjustment link fastening seat 13. One end of the crank 10 is fixedly connected to a connecting shaft portion C 701 of an inner magnetic roller bracket 7 located at a fixed half-shaft 3 near the inner magnetic roller 001, and the other end of the crank 10 is hinged to one end of the adjustment link 11. The other end of the adjustment link 11 is formed with an external threaded portion 1101. The adjustment link fastening seat 13 is fixedly connected to the frame of an external eddy current separator. A long hole is provided on the adjustment link fastening seat 13 for the external threaded portion 1101 of the adjustment link 11 to pass through. An adjustment nut 12 is respectively connected to the external threaded portion 1101 of the adjustment link 11 located on both sides of the adjustment link fastening seat 13 through a thread. The length direction of the crank 10 is perpendicular to the connecting shaft portion C 701 of the inner magnetic roller bracket 7. The axial centerline of the inner magnetic roller support 701 is perpendicular to the horizontal projection of the axial centerline of the inner magnetic roller support 7, and the horizontal projection of the axial centerline of the adjusting connecting rod 11 is perpendicular to the horizontal projection of the axial centerline of the connecting shaft portion C 701 of the inner magnetic roller support 7. In this embodiment, one end of the crank 10 can be fixedly connected to the square shaft portion formed on the corresponding connecting shaft portion C 701 of the inner magnetic roller support 7 via a square hole, or other fixing methods can be used. The adjusting connecting rod 11, through the crank 10, drives the entire assembly consisting of the two inner magnetic roller supports 7 and the inner magnetic roller 001 to rotate relative to the magnetic drum structure support 9. In the normal state, the two adjusting nuts 12 are respectively tightly attached to the adjusting connecting rod fastening base 13, locking the adjusting connecting rod 11 to the adjusting connecting rod fastening base 13 to maintain the current magnetic system deflection angle. When the adjusting connecting rod 11 needs to be adjusted to change the magnetic system deflection angle, the adjusting nuts 12 can be loosened to adjust the position of the adjusting connecting rod 11. After adjusting to the new magnetic system deflection angle, the adjusting nuts 12 can be re-tightened.

[0045] Specifically, if Figure 2 、 Figure 3 and Figure 5As shown, in this embodiment, an angle indicator scale plate 14 is screwed onto one end of the crank 10, near the connecting shaft portion C 701 of the inner magnetic roller support 7 to which the crank 10 is connected. A pointer 15 is provided on the magnetic roller structure support 9 located at the crank 10, which cooperates with the angle indicator scale plate 14. The coordinated arrangement of pointer 15 and angle indicator scale plate 14 facilitates the operator's ability to view the angle between the line connecting the center of the inner magnetic roller 001 and the center of the outer roller 8 and the vertical line, thereby obtaining the current magnetic deflection angle.

[0046] Specifically, if Figure 3 and Figure 4 As shown, in this embodiment, the connecting shaft portion A203 of the driving half-shaft 2 of the inner magnetic roller 001 is rotatably connected to the corresponding inner magnetic roller bracket 7 via a bearing A16. The connecting shaft portion B303 of the fixed half-shaft 3 of the inner magnetic roller 001 is rotatably connected to the corresponding inner magnetic roller bracket 7 via a bearing A16, ensuring smooth rotation of the inner magnetic roller 001. The bearing A16 is commercially available. Each inner magnetic roller bracket 7 is also equipped with a bearing cover 17 to limit the corresponding bearing A16 and seal the location where the bearing A16 is located. One of the bearing covers 17 located near the fixed half-shaft 3 of the inner magnetic roller 001 is equipped with a sight glass window. The sight glass window is designed using existing technology. The bearing cover 17 with a sight glass window effectively prevents dust and other impurities from entering the inner magnetic roller bracket 7 and affecting the rotation of the inner magnetic roller 001. The sight glass window allows personnel to observe the operation and lubrication status of the bearing A16 in real time. Bearing gland 17 is equipped with a thermistor 18 for detecting the temperature of the chamber adjacent to bearing A16. In this embodiment, thermistor 18 is a commercially available product and is connected to an external controller. The detection end of thermistor 18 is located near bearing A16, effectively monitoring the real-time temperature of the chamber adjacent to bearing A16 through electrical conversion.

Claims

1. An inner magnetic roller, characterized in that: It comprises a magnetic tube (1), a driving half-shaft (2), a fixed half-shaft (3), a tile-shaped magnetic block without holes (4), a magnetic retaining ring (5), and carbon fiber wire (6); Both ends of the magnetic conductive cylinder (1) in the longitudinal direction are open; The driving half shaft (2) is divided into an embedded shaft portion A (201), a limit stop edge portion A (202) and a connecting shaft portion A (203) which are connected together in sequence. The embedded shaft portion A (201) of the driving half shaft (2) is embedded in an opening at one end of the magnetic cylinder (1) and connected to the magnetic cylinder (1). The end face of the opening at one end of the magnetic cylinder (1) abuts against the limit stop edge portion A (202) of the driving half shaft (2). The connecting shaft portion A (203) of the driving half shaft (2) is located on the outside of the magnetic cylinder (1). The fixed half-shaft (3) is divided into an embedded shaft portion B (301), a limit stop portion B (302) and a connecting shaft portion B (303) which are connected together in sequence. The embedded shaft portion B (301) of the fixed half-shaft (3) is embedded in the opening of the other end of the magnetic cylinder (1) and connected to the magnetic cylinder (1). The end face of the opening of the other end of the magnetic cylinder (1) abuts against the limit stop portion B (302) of the driving half-shaft (2). The connecting shaft portion B (303) of the driving half-shaft (2) is located outside the magnetic cylinder (1). A magnetic retaining ring (5) is provided at each end position on the outer circumference of the magnetic conductive cylinder (1); a plurality of evenly arranged non-porous tile-shaped magnetic blocks (4) are provided on the outer circumference of the magnetic conductive cylinder (1) between the two magnetic retaining rings (5); and the outer circumference of the whole formed by the non-porous tile-shaped magnetic blocks (4) and the magnetic retaining ring (5) after the arrangement is completed is circumferentially wound with the carbon fiber filaments (6) coated with glue.

2. The inner magnetic roller according to claim 1, characterized in that: The magnetic conductive cylinder (1) is made of a seamless steel pipe.

3. The inner magnetic roller according to claim 1, characterized in that: The embedded shaft portion A (201) of the driving half shaft (2) is fastened to the opening at one end of the magnetic tube (1) by heat-fitting, and the embedded shaft portion B (301) of the fixed half shaft (3) is fastened to the opening at the other end of the magnetic tube (1) by heat-fitting.

4. The inner magnetic roller according to claim 1, characterized in that: Each of the magnetic system retaining rings (5) is fixedly connected to the outer peripheral surface of the magnetic conductive cylinder (1) by welding.

5. A magnetic drum structure for an eddy current separator, comprising the inner magnetic drum according to any one of claims 1 to 4, and further comprising an inner magnetic drum support (7), an outer drum (8), a magnetic drum structure support (9) and a magnetic deflection adjustment mechanism, characterized in that: The connecting shaft portion A (203) of the driving half shaft (2) of the inner magnetic roller is rotatably connected to one of the inner magnetic roller brackets (7) and is used to be connected to the driving shaft of the external driving motor. The connecting shaft portion B (303) of the fixed half shaft (3) of the inner magnetic roller is rotatably connected to the other inner magnetic roller bracket (7). The outer roller (8) is a hollow structure with openings at both ends. The opening at one end of the outer roller (8) is rotatably connected to one of the inner magnetic roller brackets (7). The opening at the other end of the outer roller (8) is rotatably connected to the other inner magnetic roller bracket (7). The outer roller (8) is covered on the outside of the inner magnetic roller. The axial center line of the inner magnetic roller as a whole is parallel to the axial center line of the outer roller (8) and is not collinear. A connecting shaft portion C (701) is extended from the outer end surface of each inner magnetic roller bracket (7), and the axial center line of the connecting shaft portion C (701) of each inner magnetic roller bracket (7) is collinear with the axial center line of the outer roller (8). The connecting shaft portion C (701) of each inner magnetic roller bracket (7) is rotatably connected to a corresponding magnetic roller structure support (9), and each magnetic roller structure support (9) is connected to an external frame. The magnetic deflection adjustment mechanism is connected to the connecting shaft portion C (701) of an inner magnetic roller bracket (7) located near the fixed half-axis (3) of the inner magnetic roller. The magnetic deflection adjustment mechanism is used to drive the whole formed by the two inner magnetic roller brackets (7) and the inner magnetic roller to rotate relative to the magnetic roller structure support (9).

6. The magnetic drum structure of an eddy current separator according to claim 5, characterized in that: The magnetic deflection adjustment mechanism includes a crank (10), an adjustment connecting rod (11), an adjustment nut (12) and an adjustment connecting rod fastening seat (13), one end of the crank (10) is fixedly connected to a connecting shaft portion C (701) of an inner magnetic roller bracket (7) located near the fixed half-axis (3) of the inner magnetic roller, the other end of the crank (10) is hinged to one end of the adjustment connecting rod (11), the other end of the adjustment connecting rod (11) is formed with an external thread portion (1101), the adjustment connecting rod fastening seat (13) is fixedly connected to an external frame, and the adjustment connecting rod fastening seat (13) is opened. A long hole is provided for the external threaded portion (1101) of the adjustment link (11) to pass through, and an adjustment nut (12) is respectively connected to the external threaded portion (1101) of the adjustment link (11) located on both sides of the adjustment link fastening seat (13) through a thread, the length direction of the crank (10) is perpendicular to the axial center line of the connecting shaft portion C (701) of the inner magnetic roller bracket (7), and the projection of the axial center line of the adjustment link (11) on the horizontal plane is perpendicular to the projection of the axial center line of the connecting shaft portion C (701) of the inner magnetic roller bracket (7) on the horizontal plane.

7. The magnetic drum structure of an eddy current separator according to claim 6, characterized in that: An angle indicating scale plate (14) is provided on one end of the crank (10) near the connecting shaft portion C (701) of the inner magnetic roller bracket (7) to which the crank (10) is connected, and a pointer (15) for use in conjunction with the angle indicating scale plate (14) is provided on the magnetic roller structure support (9) located at the crank (10).

8. The magnetic drum structure of an eddy current separator according to claim 5, characterized in that: The connecting shaft portion A (203) of the driving half shaft (2) of the inner magnetic roller is rotatably connected to the corresponding inner magnetic roller bracket (7) through the bearing A (16), and the connecting shaft portion B (303) of the fixed half shaft (3) of the inner magnetic roller is rotatably connected to the corresponding inner magnetic roller bracket (7) through the bearing A (16). Each of the inner magnetic roller brackets (7) is also provided with a bearing pressure cover (17) for limiting the corresponding bearing A (16) and sealing the location where the bearing A (16) is set. A visual glass window is provided on one of the bearing pressure covers (17) located near the fixed half shaft (3) of the inner magnetic roller.

9. The magnetic drum structure of an eddy current separator according to claim 8, characterized in that: The bearing cover (17) is provided with a thermistor (18) for detecting the temperature of a chamber where the adjacent bearing A (16) is provided.

10. The magnetic drum structure of an eddy current separator according to claim 5, characterized in that: The openings at both ends of the outer roller (8) are rotatably connected to the corresponding inner magnetic roller bracket (7) via bearings B (19).

Images