A de-ironer

Abstract

The utility model relates to magnetic force removes iron technical field especially relates to a kind of iron remover, comprising: suspension part, is hung in the upper portion of conveyer belt, and the arc adsorption surface for adsorbing ferromagnetic impurities is equipped in the lower portion of suspension part, and arc adsorption surface is ferromagnetic material;Several permanent magnets, permanent magnet is semicircular cylinder, and permanent magnet is rotationally arranged on suspension part, and several permanent magnets are annular array in the side of arc adsorption surface away from conveyer belt with the center axis of arc adsorption surface as center, and the center axis of permanent magnet is parallel with the center axis of arc adsorption surface;Sprocket drive mechanism, for driving permanent magnet rotation, by adjusting the orientation of arc magnetic surface of permanent magnet, change the magnetic attraction of arc adsorption surface, realize the adsorption and removal of ferromagnetic impurities.The utility model permanent magnet provides uniform magnetic attraction for arc adsorption surface, and shape is compatible with the coal shape on conveyer belt, avoid the contact of adsorbed ferromagnetic impurities and coal upper portion, effectively improve the adsorption effect of iron remover.

Description

Technical Field

[0001] This utility model relates to the field of magnetic iron removal technology, and in particular to an iron remover. Background Technology

[0002] In many industrial settings, such as coal transportation and processing, to ensure the normal operation of production equipment and improve product quality, it is necessary to efficiently remove ferromagnetic impurities from coal, and magnetic separators play an indispensable role. In coal conveying systems, magnetic separators are responsible for removing ferromagnetic impurities such as iron filings, nails, and wires mixed in with the coal, preventing these impurities from damaging subsequent conveying and grinding equipment, and avoiding impacts on production processes and product quality.

[0003] Currently, self-cooled electromagnetic separators are widely used in coal conveying systems. Their main structure includes an electromagnetic coil, a shell, and a bottom planar adsorption plate. When the electromagnetic coil is energized, it generates a magnetic field, which adsorbs ferromagnetic impurities from the coal through the bottom planar adsorption plate. The planar adsorption plate is the part that directly contacts the coal and plays a crucial role in the iron removal process.

[0004] However, this structure has significant technical problems. First, the planar structure at the bottom of the self-cooled electromagnetic separator does not match the shape of the coal on the conveyor belt. When coal is transported by the conveyor belt, the coal is usually distributed in an arc shape, higher in the middle and lower on both sides. The separator at the bottom of the planar structure cannot fit tightly against the coal surface, resulting in uneven distance between the separator and the coal, and uneven magnetic field distribution, which affects the iron removal effect. Second, when the separator is moved closer to the conveyor belt to enhance the iron removal effect, its bottom is prone to snagging on the coal on the conveyor belt. This not only damages the separator and the conveyor belt, but may also cause coal to spill, affecting the production environment and efficiency. Third, to avoid snagging, the distance between the separator and the conveyor belt must be increased, which weakens the magnetic field strength when it reaches the coal surface, reduces the adsorption capacity for ferromagnetic impurities, and reduces the iron removal efficiency of the coal conveying system. In addition, in cold regions, such as Harbin, the low temperature in winter will affect the performance of the electromagnetic coil, making the magnetic field strength unstable and further reducing the iron removal efficiency. At the same time, the low temperature will also make the conveyor belt hard and brittle, increasing the risk of snagging. Utility Model Content

[0005] In order to solve at least one of the above-mentioned technical problems, this utility model proposes an iron separator to solve the problem of uneven adsorption force and easy scraping with coal in existing iron separators.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A magnetic separator, comprising:

[0008] The suspension part is suspended above the conveyor belt. The lower part of the suspension part is provided with an arc-shaped adsorption surface for adsorbing ferromagnetic impurities. The arc-shaped adsorption surface is made of ferromagnetic material.

[0009] A plurality of permanent magnets are used to provide magnetic force to the arc-shaped adsorption surface. The permanent magnets are semi-cylindrical and are rotatably mounted on the suspension part. The plurality of permanent magnets are arranged in a ring around the central axis of the arc-shaped adsorption surface on the side of the arc-shaped adsorption surface away from the conveyor belt. The central axis of the permanent magnets is parallel to the central axis of the arc-shaped adsorption surface.

[0010] A sprocket drive mechanism is used to drive the permanent magnet to rotate. By adjusting the orientation of the arc-shaped magnetic surface of the permanent magnet, the magnetic attraction force of the arc-shaped adsorption surface is changed, thereby achieving the adsorption and removal of ferromagnetic impurities.

[0011] Preferably, in the adsorption state, the arc-shaped magnetic surfaces of the plurality of permanent magnets all face the central axis of the arc-shaped adsorption surface, and in the unloading state, the arc-shaped magnetic surfaces of the plurality of permanent magnets all face away from the central axis of the arc-shaped adsorption surface.

[0012] Preferably, the sprocket drive mechanism includes:

[0013] Several sprockets are respectively fixed to the same end of the permanent magnet, and the sides of the several sprockets are located on the same plane;

[0014] A chain is wound around the outside of a plurality of sprockets, and the chain meshes with the plurality of sprockets to transmit power;

[0015] A tensioning element is used to adjust the tension of the chain, and the tensioning element is disposed on the lower part of the chain on the side close to the conveyor belt;

[0016] The handle is rotated and fixed to the side of the sprocket located on the outside away from the permanent magnet, which drives the sprocket to rotate and drives other sprockets to rotate through the chain engagement, so as to adjust the orientation of the arc-shaped magnetic surface of the permanent magnet.

[0017] Preferably, the permanent magnet is fixedly provided with connecting shafts at both ends, the connecting shafts are rotatably fixed to both ends of the suspension part, and the central axis of the connecting shafts coincides with the central axis of the permanent magnet; the sprocket is fixedly sleeved on the end of the connecting shaft located outside the suspension part.

[0018] Preferably, the tensioning element is a spring tensioner, a hydraulic tensioner, or an adjustable sprocket.

[0019] Preferably, the number of permanent magnets is 6.

[0020] Preferably, the suspension portion includes:

[0021] The frame has a rectangular cross-section with an arc-shaped surface perpendicular to the central axis of the arc-shaped adsorption surface, and the frame has a accommodating cavity for mounting and rotating the permanent magnet.

[0022] Four first hanging ears are fixedly installed at the upper part of the four corners of the frame, and each first hanging ear is provided with a first hanging hole;

[0023] Two steel wire ropes, each with its two ends fixed to a first lug located diagonally opposite each other.

[0024] Preferably, the iron remover further includes a slide rail perpendicular to the conveyor belt and a trolley that moves along the slide rail. The slide rail is an I-beam, and the trolley is suspended from the lower flange of the I-beam. The frame is suspended from the lower part of the trolley by the wire rope.

[0025] Preferably, the trolley comprises:

[0026] Frame;

[0027] A number of traveling wheels are rotatably fixed on the frame along the direction of the slide rail. The traveling wheels are symmetrically arranged on both sides of the web of the I-beam and parallel to the web. The traveling wheels are in contact with the upper surface of the lower flange of the I-beam.

[0028] Several limiting wheels are rotatably fixed on the frame along the slide direction. The limiting wheels are symmetrically arranged on both sides of the web of the I-beam and perpendicular to the web. The limiting wheels are in contact with the web of the I-beam.

[0029] The second hanging ear is fixedly installed at the lower part of the trolley. The second hanging ear has a second hanging hole, and the two steel wire ropes are threaded through and fixed in the second hanging hole.

[0030] Preferably, there are four traveling wheels and four limiting wheels.

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

[0032] 1. This invention utilizes a permanent magnet to provide magnetic attraction to an arc-shaped adsorption surface, enabling ferromagnetic impurities in coal to be adsorbed and detached from the coal onto the arc-shaped adsorption surface. Simultaneously, the arc-shaped adsorption surface not only increases the contact area of ​​the ferromagnetic impurities but also adapts to the shape of the coal on the conveyor belt, preventing the adsorbed ferromagnetic impurities from contacting the upper part of the coal, thus effectively improving the adsorption effect of the iron separator. A sprocket drive mechanism drives the permanent magnet to rotate, and by changing the magnetic attraction force of the arc-shaped magnetic adsorption surface, the adsorption and removal of ferromagnetic impurities can be conveniently and quickly achieved.

[0033] 2. This invention uses a sprocket drive mechanism to drive the permanent magnets to rotate, ensuring consistent rotation of all permanent magnets and resulting in uniform magnetic attraction on the arc-shaped adsorption surface. That is, the arc-shaped magnetic surfaces of the permanent magnets can simultaneously face the arc-shaped adsorption surface to provide maximum and uniform magnetic attraction for adsorbing ferromagnetic impurities in coal; or simultaneously face away from the arc-shaped adsorption surface to provide minimum magnetic attraction for removing ferromagnetic impurities adsorbed by the arc-shaped adsorption surface, thereby improving the adsorption and removal efficiency of the iron separator. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a magnetic separator;

[0035] Figure 2 This is a side view of an iron separator;

[0036] Figure 3 This is a schematic diagram of the permanent magnet in the adsorption state in this utility model;

[0037] Figure 4 This is a schematic diagram of the permanent magnet in the unloading state of this utility model;

[0038] Figure 5 This is a schematic diagram of the configuration of the slide rail and trolley in this utility model;

[0039] In the diagram: 10, suspension part; 101, frame; 102, first hanging lug; 1021, first hanging hole; 103, wire rope; 104, arc-shaped adsorption surface; 20, permanent magnet; 201, connecting shaft; 30, sprocket drive mechanism; 301, sprocket; 302, chain; 303, tensioning element; 40, rotating handle; 50, slide rail; 501, lower flange; 60, trolley; 601, frame; 602, traveling wheel; 603, limiting wheel; 604, second hanging lug; 6041, second hanging hole; 70, conveyor belt; 80, coal. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solutions in this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this utility model, and not all of the embodiments in this utility model.

[0041] Please refer to Figures 1-5 As shown, an iron separator includes:

[0042] The suspension part 10 is suspended on the upper part of the conveyor belt 70. The lower part of the suspension part 10 is provided with an arc-shaped adsorption surface 104 for adsorbing ferromagnetic impurities. The arc-shaped adsorption surface 104 is made of ferromagnetic material.

[0043] A plurality of permanent magnets 20 are used to provide magnetic force to the arc-shaped adsorption surface 104. The permanent magnets 20 are semi-cylindrical and are rotatably mounted on the suspension part 10. The plurality of permanent magnets 20 are arranged in a ring around the central axis of the arc-shaped adsorption surface 104 on the side of the arc-shaped adsorption surface 104 away from the conveyor belt 70. The central axis of the permanent magnets 20 is parallel to the central axis of the arc-shaped adsorption surface 104.

[0044] The sprocket drive mechanism 30 is used to drive the permanent magnet 20 to rotate. By adjusting the orientation of the arc-shaped magnetic surface of the permanent magnet 20, the magnetic attraction force of the arc-shaped adsorption surface 104 is changed, thereby realizing the adsorption and removal of ferromagnetic impurities.

[0045] In this embodiment, the permanent magnet 20 provides magnetic attraction to the arc-shaped adsorption surface 104, allowing ferromagnetic impurities in the coal 80 to be adsorbed and detached from the coal 80 onto the arc-shaped adsorption surface 104. Simultaneously, the arc-shaped adsorption surface 104 not only increases the contact area of ​​the ferromagnetic impurities but also adapts to the shape of the coal on the conveyor belt 70, preventing the adsorbed ferromagnetic impurities from contacting the upper part of the coal 80, effectively improving the adsorption effect of the iron separator. The permanent magnet 20 is driven to rotate by the sprocket drive mechanism 30, and by changing the magnetic attraction of the arc-shaped magnetic surface, the adsorption and removal of ferromagnetic impurities can be conveniently and quickly achieved.

[0046] To ensure the uniformity of the magnetic force distribution on the arc-shaped adsorption surface 104, in this embodiment, when the permanent magnets 20 are in the adsorption state, the arc-shaped magnetic surfaces of several permanent magnets 20 are all facing the central axis of the arc-shaped adsorption surface 104, and when they are in the removal state, the arc-shaped magnetic surfaces of several permanent magnets 20 are all facing away from the central axis of the arc-shaped adsorption surface 104.

[0047] It should be noted that in this embodiment, the number of permanent magnets 20 is 6. Obviously, in actual operation, the number of permanent magnets 20 can be selected according to the specifications of the permanent magnets 20 and the size of the arc-shaped adsorption surface 104 to provide sufficient magnetic attraction.

[0048] Please refer to Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, the sprocket drive mechanism 30 includes:

[0049] Several sprockets 301 are fixed to the same end of the permanent magnet 20, and the sides of the several sprockets 301 are located on the same plane;

[0050] A chain 302 is wound around the outside of several sprockets 301, and the chain 302 meshes with several sprockets 301 to transmit power;

[0051] Tensioner 303 is used to adjust the tension of chain 302. Tensioner 303 is located on the lower part of the side of chain 302 near conveyor belt 70.

[0052] Rotate the handle 40 to fix it to the side of the sprocket 301 located on the outside away from the permanent magnet 20. This is used to drive the sprocket 301 to rotate and drive the other sprockets 301 to rotate through the meshing of the chain 302, so as to adjust the orientation of the arc-shaped magnetic surface of the permanent magnet 20.

[0053] Understandably, by driving the permanent magnets 20 to rotate via the sprocket drive mechanism 30, the uniformity of rotation of all permanent magnets 20 can be ensured, resulting in a uniform variation of the magnetic attraction force on the arc-shaped adsorption surface 104. That is, the arc-shaped magnetic surfaces of the permanent magnets 20 can simultaneously face the arc-shaped adsorption surface 104 to provide the maximum and uniform magnetic attraction force to adsorb ferromagnetic impurities in the coal 80; or simultaneously face away from the arc-shaped adsorption surface 104 to provide the minimum magnetic attraction force to remove the ferromagnetic impurities adsorbed by the arc-shaped adsorption surface 104. This improves the adsorption and removal efficiency of the iron separator.

[0054] It should be noted that, in order to facilitate the rotation of the sprocket 301, in this embodiment, the rotating handle 40 is fixed to the outermost sprocket 301, which can directly drive the sprocket 301 to rotate. The outermost sprocket 301 serves as the driving sprocket 301, and the power is efficiently transmitted to other sprockets 301 via the chain 302, thereby driving the permanent magnet 20 to rotate and achieving control of the magnetic attraction force of the iron separator. At the same time, this does not affect the layout and operation of other components inside the sprocket drive mechanism 30, which helps maintain the compactness and stability of the entire mechanism, and also provides convenient space for the installation and maintenance of other components.

[0055] In this embodiment, the tension of the chain 302 can be adjusted by setting the tensioning element 303 to achieve a suitable state. Whether it is a spring tensioner, a hydraulic tensioner, or an adjustable sprocket 301, the tension of the chain 302 can be automatically or manually changed according to the operation of the sprocket drive mechanism 30, ensuring that the chain 302 is always in a good working condition. The appropriate tension of the chain 302 can prevent the chain 302 from loosening, jumping, or slipping during transmission, ensuring the stability and accuracy of the transmission between the sprockets 301, enabling the multiple permanent magnets 20 to rotate synchronously and smoothly, thereby ensuring the uniform change and reliable control of the magnetic attraction force of the arc-shaped adsorption surface 104.

[0056] Meanwhile, the tensioner 303 keeps the chain 302 properly tensioned, reducing wear between the chain 302 and the sprocket 301, avoiding abnormal friction and impact caused by the chain 302 being too loose, and avoiding additional stress on the sprocket 301, bearings and other components caused by the chain 302 being too tight. This extends the service life of the chain 302, sprocket 301 and related components of the entire drive mechanism, and reduces maintenance costs and equipment failure rate.

[0057] It should be noted that the spring tensioner, hydraulic tensioner and adjustable sprocket 301 are all prior art, and their structures will not be described in detail in this application.

[0058] Please refer to Figure 1 and Figure 2 As shown, in order to facilitate the fixing of the permanent magnet 20, in this embodiment, the two ends of the permanent magnet 20 are fixedly provided with connecting shafts 201. The connecting shafts 201 are rotatably fixed at both ends of the suspension part 10, and the central axis of the connecting shafts 201 coincides with the central axis of the permanent magnet 20. The sprocket 301 is fixedly sleeved on the end of the connecting shaft 201 located outside the suspension part 10.

[0059] To reduce the rotational resistance between the connecting shaft 201 and the suspension part 10, in this embodiment, a high-precision rolling bearing is installed at the connection between the connecting shaft 201 and the suspension part 10. Compared with sliding friction, the rolling friction coefficient is extremely small, which can significantly reduce the rotational resistance and improve the convenience of operation for workers.

[0060] Please refer to Figure 1 and Figure 2 As shown, in this embodiment, the suspension part 10 includes:

[0061] The frame 101 has a rectangular cross-section with an arc-shaped surface perpendicular to the central axis of the arc-shaped adsorption surface 104. The frame 101 has a accommodating cavity for mounting and rotating the permanent magnet 20.

[0062] Four first hanging ears 102 are fixedly installed at the upper part of the four corners of the frame 101, and each first hanging ear 102 is provided with a first hanging hole 1021;

[0063] Two steel wire ropes 103, each with its two ends fixed to the first lug 102 located diagonally opposite each other.

[0064] It should be noted that, in order to reduce the weight of the suspension part 10, the frame 101 in this embodiment can be a hollow cavity. Specifically, it can be formed by two mounting plates with arc-shaped lower parts and two rectangular plates placed opposite each other to form a hollow structural frame, and the arc-shaped adsorption surface 104 can be fixed to the lower part of the hollow structural frame. At the same time, the permanent magnet 20 can be fixed by the mounting plate. Obviously, this application does not limit the structure of the frame 101 described above.

[0065] Please refer to Figure 1 and Figure 5 As shown, in order to facilitate the movement of the suspension part 10 to the unloading point of ferromagnetic impurities, the iron remover in this embodiment also includes a slide 50 arranged perpendicular to the conveyor belt 70 and a trolley 60 that moves along the slide 50. The slide 50 is an I-beam, and the trolley 60 is suspended from the lower flange 501 of the I-beam. The frame 101 is suspended from the lower part of the trolley 60 by a steel wire rope 103.

[0066] In this embodiment, a trolley 60 that can move along the slide rail 50 drives the suspension part 10 at the lower part of the trolley 60 to move. When ferromagnetic impurities adsorbed on the arc-shaped adsorption surface 104 need to be removed, the trolley 60 is controlled to move the iron remover to the removal point to remove the ferromagnetic impurities. After removal, the trolley 60 is controlled to move the iron remover to the upper part of the conveyor belt 70 to continue the adsorption process.

[0067] Please refer to Figure 5 As shown, the aforementioned trolley 60 includes: a frame 601; a plurality of traveling wheels 602, which are rotatably fixed on the frame 601 along the slide rail 50 direction, the traveling wheels 602 being symmetrically arranged on both sides of the web of the I-beam and parallel to the web, and the traveling wheels 602 contacting the upper surface of the lower flange 501 of the I-beam; a plurality of limiting wheels 603, which are rotatably fixed on the frame 601 along the slide rail direction, the limiting wheels 603 being symmetrically arranged on both sides of the web of the I-beam and perpendicular to the web, and the limiting wheels 603 contacting the web of the I-beam; and a second lug 604, which is fixedly arranged at the lower part of the trolley 60, the second lug 604 having a second hanging hole 6041, and two steel wire ropes 103 passing through and fixed in the second hanging hole 6041.

[0068] In this embodiment, the traveling wheels 602 and the limiting wheels 603 cooperate with the I-beam slide rail 50. The traveling wheels 602 enable the trolley 60 to move smoothly along the slide rail 50 and are symmetrically arranged on both sides of the web of the I-beam and in contact with the upper surface of the lower flange 501, providing good support and guidance. The limiting wheels 603 can limit the lateral displacement of the trolley 60 during movement, prevent the trolley 60 from derailing, and ensure the safety and stability of the iron remover during movement.

[0069] It should be noted that the frame 601 described above in this embodiment includes a channel steel and a mounting plate that is horizontally welded and fixed to the flanges parallel to both sides of the channel steel. The mounting plate has mounting holes along the slide 50 to facilitate the installation of the traveling wheel 602. The axle of the traveling wheel 602 can be fixed to the mounting plate through the axle sleeve.

[0070] To facilitate the installation of the limiting wheel 603, there is an installation gap between the mounting plates. The limiting wheel 603 can be fixed to the side of the mounting plate near the web of the I-beam by the wheel axle bracket.

[0071] Obviously, the above-mentioned frame structure 601 and the installation method of the running wheel 602 and the limiting wheel 603 are only one possible structure, and this application does not limit the above structure and installation method.

[0072] In this embodiment, there are four traveling wheels 602 and four limiting wheels 603. It is understood that in actual operation, the number of traveling wheels 602 and four limiting wheels 603 can be adjusted according to the specifications of the trolley 60 and the load of the iron remover.

[0073] The working process of the iron separator of this utility model:

[0074] The conveyor belt 70 is started to transport coal 80. When the coal 80 enters the magnetic field range of the iron remover, under the magnetic force of the permanent magnet 20, the ferromagnetic impurities in the coal 80 are adsorbed onto the arc-shaped adsorption surface 104.

[0075] When the amount of ferromagnetic impurities on the arc-shaped adsorption surface 104 reaches the amount that needs to be removed, the trolley 60 is controlled to move along the slide rail 50 to move the iron remover to the removal point. By turning the handle 40, the outermost sprocket 301 is rotated, which in turn drives all the permanent magnets 20 to rotate through the chain 302, reducing the magnetic attraction force on the arc-shaped adsorption surface 104, so that the ferromagnetic impurities fall off.

[0076] After the ferromagnetic impurities are removed, the trolley 60 is controlled to return along the slide 50 to the upper part of the conveyor belt 70. The handle 40 is turned to rotate the arc-shaped magnetic surface of the permanent magnet 20 to the position facing the arc-shaped adsorption surface 104, and the adsorption work continues.

[0077] The above description is a specific implementation of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A magnetic separator, characterized in that, include: The suspension part (10) is suspended on the upper part of the conveyor belt (70). The lower part of the suspension part (10) is provided with an arc-shaped adsorption surface (104) for adsorbing ferromagnetic impurities. The arc-shaped adsorption surface (104) is made of ferromagnetic material. A plurality of permanent magnets (20) are used to provide magnetic force to the arc-shaped adsorption surface (104). The permanent magnets (20) are semi-cylindrical and are rotatably mounted on the suspension part (10). The plurality of permanent magnets (20) are arranged in a ring around the central axis of the arc-shaped adsorption surface (104) on the side of the arc-shaped adsorption surface (104) away from the conveyor belt (70). The central axis of the permanent magnets (20) is parallel to the central axis of the arc-shaped adsorption surface (104). The sprocket drive mechanism (30) is used to drive the permanent magnet (20) to rotate. By adjusting the orientation of the arc-shaped magnetic surface of the permanent magnet (20), the magnetic attraction of the arc-shaped adsorption surface (104) is changed, thereby realizing the adsorption and removal of ferromagnetic impurities.

2. The iron remover according to claim 1, characterized in that, In the adsorption state, the arc-shaped magnetic surfaces of the permanent magnets (20) are all facing the central axis of the arc-shaped adsorption surface (104). In the removal state, the arc-shaped magnetic surfaces of the permanent magnets (20) are all facing away from the central axis of the arc-shaped adsorption surface (104).

3. The iron remover according to claim 2, characterized in that, The sprocket drive mechanism (30) includes: A plurality of sprockets (301) are respectively fixed to the same end of the permanent magnet (20), and the sides of the plurality of sprockets (301) are located on the same plane; A chain (302) is wound around the outside of a plurality of sprockets (301), and the chain (302) meshes with the plurality of sprockets (301) to transmit power; Tensioner (303) is used to adjust the tension of the chain (302), and the tensioner (303) is disposed on the lower part of the chain (302) near the conveyor belt (70); Rotate the handle (40) to fix it to the side of the sprocket (301) located on the outside away from the permanent magnet (20), so as to drive the sprocket (301) to rotate and drive other sprockets (301) to rotate through the meshing of the chain (302) to adjust the orientation of the arc-shaped magnetic surface of the permanent magnet (20).

4. The iron remover according to claim 3, characterized in that, The permanent magnet (20) has a connecting shaft (201) fixed at both ends. The connecting shaft (201) is rotatably fixed at both ends of the suspension part (10), and the central axis of the connecting shaft (201) coincides with the central axis of the permanent magnet (20). The sprocket (301) is fixedly sleeved on the end of the connecting shaft (201) located outside the suspension part (10).

5. The iron remover according to claim 4, characterized in that, The tensioning element (303) is a spring tensioner, a hydraulic tensioner, or an adjustable sprocket.

6. The iron remover according to claim 5, characterized in that, The number of permanent magnets (20) is 6.

7. The iron remover according to claim 6, characterized in that, The suspension part (10) includes: The frame (101) has a rectangular cross-section with an arc-shaped surface perpendicular to the central axis of the arc-shaped adsorption surface (104), and the frame (101) has a accommodating cavity for the installation and rotation of the permanent magnet (20). Four first hanging ears (102) are fixedly installed at the upper part of the four corners of the frame (101), and the first hanging ears (102) are provided with first hanging holes (1021); Two steel wire ropes (103), each of which is fixed at both ends to a first lug (102) located diagonally opposite each other.

8. The iron remover according to claim 7, characterized in that, The iron remover also includes a slide (50) perpendicular to the conveyor belt (70) and a trolley (60) that moves along the slide (50). The slide (50) is an I-beam, and the trolley (60) is suspended from the lower flange (501) of the I-beam. The frame (101) is suspended from the lower part of the trolley (60) by the wire rope (103).

9. The iron remover according to claim 8, characterized in that, The trolley (60) includes: Frame (601); A plurality of traveling wheels (602) are rotatably fixed on the frame (601) along the direction of the slide rail (50). The traveling wheels (602) are symmetrically arranged on both sides of the web of the I-beam and parallel to the web. The traveling wheels (602) are in contact with the upper surface of the lower flange (501) of the I-beam. A number of limiting wheels (603) are rotatably fixed on the frame (601) along the direction of the slide (50). The limiting wheels (603) are symmetrically arranged on both sides of the web of the I-beam and perpendicular to the web. The limiting wheels (603) are in contact with the web of the I-beam. The second hanging ear (604) is fixedly installed at the lower part of the trolley (60). The second hanging ear (604) is provided with a second hanging hole (6041), and two steel wire ropes (103) are threaded through and fixed in the second hanging hole (6041).

10. The iron remover according to claim 9, characterized in that, The number of the traveling wheels (602) and the limiting wheels (603) are both 4.

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