Coal deironing device

Abstract

The utility model relates to the field of thermal power generation, and discloses a coal material iron removal device which comprises a coal material conveying assembly, a first iron removal assembly and a second iron removal assembly. The iron attracting assembly is arranged above the first conveying belt and comprises a second conveying belt used for attracting iron impurities in the coal located on the first conveying belt, the second conveying belt extends in the width direction of the first conveying belt, and at least one end of the second conveying belt extends out of the first conveying belt; and the iron remover is arranged on one side, extending in the width direction of the first conveying belt, of the second conveying belt and is used for counteracting the magnetic force of the part, close to the iron remover, of the second conveying belt. The de-ironing device offsets part of magnetic force of the second conveying belt close to the de-ironing device, iron impurities are not subjected to the magnetic force and supporting force of the iron attraction assembly when rotating on the second conveying belt to be close to the de-ironing device and only fall off due to gravity, de-ironing is cleaner, follow-up iron attraction of the iron attraction assembly is not affected, and the de-ironing efficiency is high.

Description

Technical Field

[0001] The present invention relates to the field of thermal power generation, and particularly to a device for removing iron from coal. Background Art

[0002] In the traditional thermal power generation process, it is necessary to remove ferromagnetic impurities in coal, and this step usually involves using iron removal equipment.

[0003] KR1020120121531A provides an iron sheet removing device. A magnet is arranged in a conveyor belt, so the conveyor belt also has magnetism. The conveyor belt sucks away the iron sheets in the coal material. When the iron sheets rotate on the conveyor belt to a position far from the magnet, the magnetic force becomes smaller, and the magnetic force is less than the gravity, then the iron sheets fall off the conveyor belt. The iron sheets on the conveyor belt are removed by using the fact that the magnetic force at a position far from the magnet is less than the gravity. If the iron sheets have a small mass and the gravity is less than the magnetic force, they will not fall off, and the iron sheets cannot be removed cleanly, which affects the iron absorption of the conveyor belt and reduces the subsequent iron removal efficiency. In addition, the removed iron impurities are directly thrown on the ground and need to be collected manually. Utility Model Content

[0004] The purpose of the present invention is to overcome the problem that iron sheets cannot be removed cleanly on the iron absorption component in the prior art.

[0005] To achieve the above purpose, the present invention provides a device for removing iron from coal, including:

[0006] A coal material conveying component, which includes a first conveyor belt for conveying coal material;

[0007] An iron absorption component, which is arranged above the first conveyor belt and includes a second conveyor belt for adsorbing iron impurities in the coal material located on the first conveyor belt. The second conveyor belt extends along the width direction of the first conveyor belt, and at least one end extends out of the first conveyor belt; and a de-ironer, which is arranged on one side where the second conveyor belt extends in the width direction of the first conveyor belt and is used to offset the magnetic force of a part of the second conveyor belt close to the de-ironer.

[0008] In some embodiments, the iron absorption component further includes a driving roller, a driven roller, a magnet and a first driving member. The second conveyor belt is sleeved on the driving roller and the driven roller, and the first driving member is used to drive the driving roller to rotate. The magnet is arranged in the area surrounded by the driving roller, the driven roller and the second conveyor belt.

[0009] In some embodiments, a plurality of convex strips extending along the width direction of the second conveyor belt are arranged on the outer surface of the second conveyor belt, and the plurality of convex strips are arranged at intervals along the length direction of the second conveyor belt.

[0010] In some embodiments, the iron absorption component is set to be adjustable in height.

[0011] In some embodiments, the magnetic attracting assembly further includes a moving frame which is arranged on the outer periphery of the second conveyor belt in the horizontal direction and is connected to the driving roller and the driven roller. The iron remover is arranged on the moving frame. The coal material iron removing device includes a height adjusting mechanism which is connected to the moving frame and adjusts the height of the magnetic attracting assembly by adjusting the height of the moving frame.

[0012] In some embodiments, the height adjusting mechanism includes a screw rod extending along the vertical direction on one side of the moving frame, a moving block sleeved on the screw rod and threadedly connected to the screw rod, and a second driving assembly for driving the screw rod to rotate about its axis. The moving block is fixedly connected to the moving frame.

[0013] In some embodiments, the height adjusting mechanism further includes a U-shaped housing which is arranged on one side of the moving frame. The screw rod is rotatably arranged in the housing. The second driving assembly includes:

[0014] A second driving member which is arranged on the top end face of the housing and provides power in the horizontal direction;

[0015] A rack which extends along the horizontal direction on the top of the housing and is connected to the output end of the second driving member; and a gear which meshes with the rack and is fixedly connected to the screw rod;

[0016] The height adjusting mechanism further includes a guiding assembly for guiding the rack to move in the horizontal direction.

[0017] In some embodiments, the guiding assembly includes a long bar and a long slot. The long bar is connected below the rack. The long slot is arranged on the top end face of the housing parallel to the power direction of the second driving member. When the rack moves, the long bar slides in the long slot to guide the moving direction of the rack.

[0018] In some embodiments, the coal material iron removing device further includes a vertically arranged bracket. The outer wall of the moving frame is slidably connected to the bracket. The housing is fixedly arranged on the bracket. The height adjusting mechanism adjusts the height of the magnetic attracting assembly by adjusting the up-and-down sliding of the moving frame on the bracket.

[0019] In some embodiments, the coal material iron removing device further includes at least one auxiliary height adjusting mechanism which is arranged on a side of the moving frame different from the height adjusting mechanism.

[0020] In some embodiments, the coal material iron removing device further includes a collecting basket which is arranged below the part of the second conveyor belt extending outside the first conveyor belt.

[0021] In some embodiments, the coal material conveying assembly further includes a stirring mechanism which is arranged on the first conveyor belt and is used for stirring the coal material on the first conveyor belt below the magnetic attracting assembly.

[0022] Through the above technical solution, the iron removal device for coal provided by the utility model offsets part of the magnetic force of the second conveyor belt close to the iron remover by arranging the iron remover. When the iron impurities rotate on the second conveyor belt to be close to the iron remover, they are not affected by the magnetic force and the supporting force of the iron absorbing component, and only fall from the second conveyor belt under the action of gravity, so as to remove the iron impurities from the iron absorbing component. The device removes iron cleanly, does not affect the subsequent iron absorption of the iron absorbing component, and has a high overall iron removal efficiency. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is a three-dimensional view of an embodiment of the iron removal device for coal in the present utility model;

[0025] Figure 2 is Figure 1 a partial structural schematic diagram of

[0026] Figure 3 is Figure 2 the front view of

[0027] Figure 4 is Figure 2 an enlarged view of the A structure in

[0028] Figure 5 is Figure 2 the rear view of

[0029] Figure 6 is a three-dimensional view of an embodiment in which a stirring mechanism is arranged on the first conveyor belt;

[0030] Description of the Reference Numerals

[0031] 1. Base; 2. Stirring mechanism; 21. Stirring member; 22. Second support; 23. Third driving member; 24. Chain; 25. Gear; 26. Stirring teeth; 27. Stirring shaft; 3. Height adjusting mechanism; 31. Housing; 32. Second driving member; 33. First support; 34. Round rod; 35. Gear; 36. Long slot; 37. Rack; 38. Long strip; 39. Screw; 301. Moving block; 302. Second connecting plate; 303. Telescopic rod; 304. First connecting plate; 4. Bracket; 5. Second support rod; 6. Magnet assembly; 61. Magnet; 62. Driving roller; 63. Second conveyor belt; 64. Ridge; 65. Driven roller; 7. Iron remover; 8. Vertical plate; 9. Moving frame; 10. Discharge hopper; 11. Collection basket; 12. Support frame; 13. First conveyor belt; 14. First support rod. Detailed implementation manners

[0032] The following further describes in detail the implementation manners of the present utility model in conjunction with the drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principles of the present utility model, but cannot be used to limit the scope of the present utility model. The present utility model can be implemented in many different forms, not limited to the specific embodiments disclosed in the text, but including all technical solutions falling within the scope of the claims.

[0033] These embodiments of the present utility model are provided to make the present utility model thorough and complete, and to fully express the scope of the present utility model to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be interpreted as merely exemplary, rather than as limitations.

[0034] It should be noted that in the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0035] In addition, the "first", "second" and similar terms used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. The terms "including" or "comprising" and similar terms mean that the elements before this word are covered by the elements listed after this word, and do not exclude the possibility of also covering other elements.

[0036] It should also be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0037] All terms used in the present utility model have the same meanings as understood by those of ordinary skill in the art to which the present utility model pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0038] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be regarded as part of the description.

[0039] To solve the problem that iron flakes cannot be completely removed from the iron attracting component in the prior art, the present utility model provides a coal material iron removing device, including: a coal material conveying component, the coal material conveying component includes a first conveyor belt 13 for conveying coal material; an iron attracting component 6, the iron attracting component 6 is arranged above the first conveyor belt 13, and includes a second conveyor belt 63 for adsorbing iron impurities in the coal material located on the first conveyor belt 13, the second conveyor belt 63 extends along the width direction of the first conveyor belt 13, and at least one end extends out of the first conveyor belt 13; and a de-ironing device 7, the de-ironing device 7 is arranged on one side where the second conveyor belt 63 extends in the width direction of the first conveyor belt 13, and is used to counteract the magnetic force of a part of the second conveyor belt 63 close to the de-ironing device 7.

[0040] Using magnetic field reversal for demagnetization, the de-ironing device 7 is set to have a magnetic property opposite to that of the iron attracting component 6. By applying an external magnetic field to change the arrangement direction of the magnetic domains inside the magnets of the iron attracting component 6, the magnetic force of a part of the iron attracting component 6 is counteracted when it is close to the de-ironing device 7. By setting the relative positions of the de-ironing device 7 and the iron attracting component 6, a specific position can exist on the iron attracting component 6 where the de-ironing device 7 exactly cancels out the magnetic force of the iron attracting component 6 completely. As Figure 1As shown, a specific position is set as the outermost end where the second conveyor belt 63 extends along the width direction of the first conveyor belt 13. At this specific position, the iron impurities are not supported by the iron-absorbing component 6 and only fall under their own gravity, thereby removing the iron impurities adsorbed by the iron-absorbing component 6. The rotation of the second conveyor belt 63 enables the adsorbed iron impurities to reach the specific position, and the iron impurities will not fall onto the first conveyor belt 13 when dropping, thereby removing the iron impurities in the coal material on the first conveyor belt 13.

[0041] In some embodiments, as Figure 2 shown, the iron-absorbing component 6 further includes a driving roller 62, a driven roller 65, a magnet 61, and a first driving member. The second conveyor belt 63 is sleeved on the driving roller 62 and the driven roller 65. The first driving member is used to drive the driving roller 62 to rotate, and the magnet 61 is arranged in the area surrounded by the driving roller 62, the driven roller 65, and the second conveyor belt 63. Since the magnet 61 has magnetism, the second conveyor belt 63 close to it also has this magnetism, and can adsorb the iron impurities in the coal material onto the second conveyor belt 63. The first driving member can be set as a motor to drive the driving roller 62 to rotate, thereby driving the second conveyor belt 63 and the driven roller 65 to rotate synchronously. The magnet 61 is not limited to being arranged in the area surrounded by the driving roller 62, the driven roller 65, and the second conveyor belt 63. Each component in the iron-absorbing component 6 can also be set to have magnetism, and the magnet 61 is not set separately.

[0042] In some embodiments, as Figure 2 shown, a plurality of ridges 64 extending along the width direction of the second conveyor belt 63 are provided on the outer surface of the second conveyor belt 63. The plurality of ridges 64 are arranged at intervals along the length direction of the conveyor belt. The ridges 64 increase the surface area of the second conveyor belt 63, making it easier for the iron impurities in the coal material to be adsorbed by the second conveyor belt 63.

[0043] In some embodiments, the iron-absorbing component 6 is set to be height-adjustable. By adjusting the height of the iron-absorbing component 6, the distance between the iron-absorbing component 6 and the coal material on the first conveyor belt 13 can be adjusted. The iron-absorbing component 6 can be adjusted to an appropriate height according to the actual situations such as the content of iron impurities in the coal material and the height of the coal material on the first conveyor belt 13, improving the convenience of using the coal material iron removal device.

[0044] In some embodiments, the iron-absorbing component 6 further includes a moving frame 9. The moving frame 9 is arranged on the outer periphery of the second conveyor belt 63 in the horizontal direction and is connected to the driving roller 62 and the driven roller 65. As Figure 2 shown, the inner wall of the moving frame 9 is rotatably connected to the driving roller 62 and the driven roller 65. It can also be set that the driving roller 62 and the driven roller 65 pass through the outer wall of the moving frame 9 and are rotatably connected to the moving frame 9. As Figure 1As shown, the iron remover 7 is arranged on the moving frame 9 and connected to the moving frame 9 through the vertical plate 8. The vertical plate 8 is used to adjust the relative position of the iron remover 7 and the iron attracting component 6 to obtain a non-magnetic position on the second conveyor belt 63. The iron remover 7 can also be arranged on the inner wall of the moving frame 9 or the lower edge of the moving frame 9, and the vertical plate 8 is used to adjust the relative position of the iron remover 7 and the iron attracting component 6.

[0045] In some embodiments, as Figure 1 shown, the coal iron removal device includes a height adjustment mechanism 3. The height adjustment mechanism 3 is connected to the moving frame 9. The height adjustment mechanism 3 adjusts the height of the iron attracting component 6 by adjusting the height of the moving frame 9. At the same time, the iron remover 7 is also arranged on the moving frame 9. When the height of the moving frame 9 changes, the relative position of the iron remover 7 and the iron attracting component 6 remains unchanged.

[0046] In some embodiments, as Figure 3 shown, the height adjustment mechanism 3 includes a screw rod 39 extending vertically on one side of the moving frame 9, a moving block 301 sleeved on the screw rod 39 and threadedly connected to the screw rod 39, and a second driving component for driving the screw rod 39 to rotate around its axis. The moving block 301 is fixedly connected to the moving frame 9. The second driving component drives the screw rod 39 to rotate clockwise or counterclockwise around its axis, and the moving block 301 moves up and down, thereby driving the moving frame 9 to move up and down to realize the height adjustment of the iron attracting component 6.

[0047] In some embodiments, the height adjustment mechanism 3 further includes a U-shaped housing 31. The housing 31 is arranged on one side of the moving frame 9. The screw rod 39 is rotatably arranged in the housing 31. As Figure 3 shown, the screw rod 39 is rotatably connected to the bottom end surface inside the housing 31. The moving block 301 is slidably connected to or does not contact the inner side wall of the housing 31 at the end far from the moving frame 9. Figure 2 Part A in Figure 4 is the second driving component. Figure 4As shown, a round rod 34 is also provided at the part passing through the upper surface of the housing 31 between the gear 35 and the screw 39. The outer surface of the round rod 34 is smooth and serves as a connection when the gear 35 drives the screw 39 to rotate.

[0048] In some embodiments, the height adjustment mechanism 3 further includes a guiding assembly for guiding the rack 37 to move in the horizontal direction.

[0049] In some embodiments, as Figure 4 shown, the guiding assembly includes a long bar 38 and a long slot 36. The long bar 38 is connected below the rack 37, and the long slot 36 is arranged on the top end surface of the housing 31 parallel to the power direction of the second driving member 32. When the rack 37 moves, the long bar 38 slides in the long slot 36 to guide the rack 37 to move along the power direction of the second driving member 32 without deviation. The guiding assembly can also be arranged to connect a telescopic rod at one end of the rack 37 away from the second driving member 32. The telescopic direction of the telescopic rod is the same as the power direction of the second driving member 32. A support seat is arranged below the telescopic rod to fix the telescopic rod on the top of the housing 31. In this way, when the rack 37 moves under the drive of the second driving member 32, the telescopic rod guides the rack 37 to move along the power direction of the second driving member 32 without deviation. The structure of the guiding assembly is not limited to the two structures of the present invention, and any structure that can realize guiding the rack 37 to move along the power direction of the second driving member 32 is acceptable.

[0050] In some embodiments, as Figure 3 shown, the coal material iron removal device further includes a vertically arranged bracket 4. The outer wall of the moving frame 9 is slidably connected to the bracket 4, the housing 31 is fixedly arranged on the bracket 4, and the height adjustment mechanism 3 adjusts the height of the iron absorption assembly 6 by adjusting the up and down sliding of the moving frame 9 on the bracket 4. A convex block is provided at the position where the moving frame 9 is connected to the bracket 4, and a groove is provided along the vertical direction on the inner wall of the bracket 4. The convex block slides in the groove, so as to realize the up and down sliding of the moving frame 9 on the bracket 4. Other sliding connection structures can also be arranged, not limited to the structure of the convex block and the groove.

[0051] In some embodiments, the coal material iron removal device further includes at least one auxiliary height adjustment mechanism. The auxiliary height adjustment mechanism is arranged on a side of the moving frame 9 different from the height adjustment mechanism 3, which serves to assist the height adjustment mechanism 3 to adjust the height of the moving frame 9 and support the moving frame 9 after adjusting to an appropriate height. As Figure 5As shown, the auxiliary height adjustment mechanism includes a second connecting plate 302, a telescopic rod 303, and a first connecting plate 304. The second connecting plate 302 is fixedly connected to the moving frame 9, and the first connecting plate 304 is fixedly connected to the support 4. The telescopic rod 303 is arranged in the middle. The telescopic rod 303 operates synchronously with the height adjustment mechanism 3 and plays a supporting role after being adjusted to an appropriate height, preventing skewing caused by the height adjustment mechanism 3 being arranged on one side of the coal material iron removal device. The telescopic rod 303 can be an electric push rod in the prior art, and the first connecting plate 304 can also be arranged at a position on the support 4 below the second connecting plate 302. The structure of the auxiliary height adjustment mechanism is not limited to this, and any height adjustment structure that can assist the height adjustment mechanism 3 in adjusting the height of the moving frame 9 and play a supporting role can be used.

[0052] In some embodiments, the coal material iron removal device further includes a collection basket 11, and the collection basket 11 is arranged below the part of the second conveyor belt 63 extending outside the first conveyor belt 13. As Figure 1 shown, the collection basket 11 is arranged on the support 4. The iron impurities fall into the collection basket 11 after falling on the second conveyor belt 63, and there is no need for additional manual cleaning of the fallen iron impurities. A discharge hopper 10 can also be arranged below the collection basket 11. The bottom of the collection basket 11 is provided with holes. When the iron impurities enter the collection basket 11, they will leak through the holes and fall onto the discharge hopper 10. The discharge hopper 10 is in an inclined state to discharge the iron impurities. The structures of the collection basket 11 and the discharge hopper 10 are not limited to Figure 1 shown, and can be any structure that can play a collection role and a discharge role. The present utility model does not make specific restrictions on this either.

[0053] In some embodiments, the coal material conveying assembly further includes a stirring mechanism 2, and the stirring mechanism 2 is arranged on the first conveyor belt 13 and is used for stirring the coal material on the first conveyor belt 13 below the iron absorption assembly 6. As Figure 6As shown, the stirring mechanism 2 includes at least one stirring member 21. The stirring member 21 is composed of a plurality of stirring teeth 26 and a stirring shaft 27. The stirring teeth 26 are claw-shaped. The stirring shaft 27 passes through the support frames 12 and the brackets 4 on both sides of the first conveyor belt 13 and rotates under the drive of the third driving member 23. The stirring teeth 26 turn out the iron impurities in the coal material on the first conveyor belt 13, making it easier for the iron impurity absorbing assembly 6 to absorb the iron impurities. When multiple stirring members 21 are provided, a third driving member 23 is respectively provided on the bracket 4 at one end of each stirring shaft 27, or only one third driving member 23 is provided, and all the stirring members 21 are driven to rotate synchronously through a transmission mechanism. When only one third driving member 23 is provided, the transmission mechanism can be a chain 24 and a gear 25. A gear 25 is provided on each stirring shaft 27 on the same side of the bracket 4. The chain 24 is sleeved on all the gears 25. The third driving member 23 is provided at one end of one of the stirring shafts 27. The third driving member 23 drives the gear 25 on its corresponding stirring shaft 27 to rotate, and drives all the gears 25 to rotate through the chain 24, so that all the stirring members 21 rotate. A second support 22 is provided below the third driving member 23 for supporting and fixing the third driving member 23 to the bracket 4. The third driving member 23 can be set as a motor. Of course, the stirring mechanism 2 can also adopt other structures that can stir the coal material on the first conveyor belt 13, and the present utility model does not make specific restrictions on this. The bracket 4 may not be set as Figure 6 the shape shown. The bracket 4 is hollow at the position where the stirring shaft 27 passes through the support frame 12. The stirring shaft 27 only passes through the support frame 12. The third driving member 23 and the second support 22 are both provided on the support frame 12.

[0054] In some embodiments, as Figure 1 shown, the coal material iron removing device further includes a base 1, a first support rod 14 and a second support rod 5. The first support rod 14 and the second support rod 5 are arranged on both sides of the coal material iron removing device along the length direction of the first conveyor belt 13 for supporting the entire coal material iron removing device. A base 1 is provided at the bottom of the bracket 4, the first support rod 14 and the second support rod 5 to prevent excessive local pressure. In Figure 1 it, the height of the first support rod 14 is set to be less than the height of the second support rod 5, which is applicable to the situation where the coal material is transported to a higher place. The heights of the first support rod 14 and the second support rod 5 can also be set to be the same according to the actual situation, that is, there is no need to change the height of the coal material, or the height of the first support rod 14 is less than the height of the second support rod 5, that is, the coal material is transported to a lower place. Other arbitrary structures that can support the entire coal material iron removing device can also be adopted, not limited to this disclosure.

[0055] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified or partial technical features can be equivalently replaced without departing from the scope and spirit of the present utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way.

Claims

1. A coal material iron removal device, characterized in that: include: A coal conveying assembly, the coal conveying assembly comprising a first conveyor belt (13) for conveying coal; an iron-absorbing assembly (6), the iron-absorbing assembly (6) being arranged above the first conveyor belt (13), comprising a second conveyor belt (63) for absorbing iron impurities in the coal material on the first conveyor belt (13), the second conveyor belt (63) extending in a width direction of the first conveyor belt (13), and at least one end of the second conveyor belt (63) extending outside the first conveyor belt (13); and The iron remover (7) is arranged on a side of the second conveyor belt (63) extending in the width direction of the first conveyor belt (13), and is used to offset the magnetic force of the part of the second conveyor belt (63) close to the iron remover (7).

2. The coal iron removal device according to claim 1, characterized in that: The magnetic magnet assembly (6) further comprises an active roller (62), a driven roller (65), a magnet (61) and a first driving member, wherein the second conveyor belt (63) is sleeved on the active roller (62) and the driven roller (65), the first driving member is used for driving the active roller (62) to rotate, and the magnet (61) is arranged in an area surrounded by the active roller (62), the driven roller (65) and the second conveyor belt (63).

3. The coal iron removal device according to claim 2, characterized in that: A plurality of convex strips (64) extending along the width direction of the second conveyor belt (63) are provided on the outer surface of the second conveyor belt (63), and the plurality of convex strips (64) are arranged at intervals along the length direction of the second conveyor belt (63); and / or the magnetic magnet assembly (6) is arranged to be height-adjustable.

4. The coal material iron removal device according to claim 3, characterized in that: The magnetic magnet assembly (6) further comprises a movable frame (9), wherein the movable frame (9) is arranged on the outer periphery of the second conveyor belt (63) in the horizontal direction and is connected to the active roller (62) and the driven roller (65); the de-ironing device (7) is arranged on the movable frame (9); the coal material de-ironing device comprises a height adjustment mechanism (3), wherein the height adjustment mechanism (3) is connected to the movable frame (9); and the height adjustment mechanism (3) adjusts the height of the magnetic magnet assembly (6) by adjusting the height of the movable frame (9).

5. The coal iron removal device according to claim 4, characterized in that: The height adjustment mechanism (3) comprises a screw rod (39) extending in a vertical direction and arranged on one side of the moving frame (9), a moving block (301) sleeved on the screw rod (39) and threadedly connected to the screw rod (39), and a second driving component driving the screw rod (39) to rotate around its axis, wherein the moving block (301) is fixedly connected to the moving frame (9).

6. The coal iron removal device according to claim 5, characterized in that: The height adjustment mechanism (3) further comprises a U-shaped housing (31), wherein the housing (31) is arranged on one side of the moving frame (9), and the screw rod (39) is rotatably arranged in the housing (31). The second driving assembly comprises: A second driving member (32), the second driving member (32) being arranged on the top end surface of the shell (31), and the second driving member (32) providing power in a horizontal direction; a rack (37), the rack (37) extending in a horizontal direction and arranged on the top of the housing (31) and connected to an output end of the second driving member (32); and A gear (35), the gear (35) meshing with the rack (37), the gear (35) being fixedly connected to the screw (39); The height adjustment mechanism (3) also includes a guide assembly for guiding the rack (37) to move in a horizontal direction.

7. The coal iron removal device according to claim 6, characterized in that: The guide assembly comprises a long strip (38) and a long slot (36), the long strip (38) being connected below the rack (37), the long slot (36) being arranged on the top end surface of the housing (31) and parallel to the power direction of the second driving member (32), and when the rack (37) moves, the long strip (38) slides in the long slot (36) to guide the movement direction of the rack (37); and / or The coal material iron removal device also includes a vertically arranged bracket (4), the outer wall of the movable frame (9) is slidably connected to the bracket (4), the shell (31) is fixedly arranged on the bracket (4), and the height adjustment mechanism (3) adjusts the height of the iron-absorbing assembly (6) by adjusting the movable frame (9) to slide up and down on the bracket (4).

8. The coal iron removal device according to claim 5, characterized in that: The coal material iron removal device further comprises at least one auxiliary height adjustment mechanism, wherein the auxiliary height adjustment mechanism is arranged on a side of the movable frame (9) different from the side of the height adjustment mechanism (3).

9. The coal material iron removal device according to any one of claims 1 to 8, characterized in that: The coal material iron removal device further comprises a collecting basket (11), wherein the collecting basket (11) is arranged below the portion of the second conveyor belt (63) extending outside the first conveyor belt (13).

10. The coal material iron removal device according to any one of claims 1 to 8, characterized in that: The coal material conveying assembly further comprises a stirring mechanism (2), wherein the stirring mechanism (2) is arranged on the first conveyor belt (13) and is used for stirring the coal material on the first conveyor belt (13) below the magnetic magnet assembly (6).

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