Heavy medium magnetic separator for high strength magnetic coal

Abstract

The invention discloses a heavy medium magnetic separator for high-strength magnetic coal, which relates to the technical field of coal processing, and comprises a base, a magnetic separation pool arranged inside the base and a bracket installed on the top of the base, and also comprises: a magnetic separation roller; a driving mechanism, which comprises a first gear installed at one end of the magnetic separation roller, a gear ring installed on the inner wall of one side of the bracket and a first power component for driving the gear ring to rotate; an adjusting mechanism, which comprises two driving disks and a second power component for driving the two driving disks to rotate; by repeatedly dividing the magnetic material outside the magnetic separation roller, the granular impurities wrapped in the magnetic material are exposed, and the exposed granular impurities are removed by the suction force of the negative pressure air duct, so as to achieve the effect of automatically cleaning the magnetic material separated by the magnetic separation, thereby solving the problem that the magnetic material separated by the magnetic separation in the prior art contains a large number of tiny granular impurities and needs to be processed again, and effectively improving the efficiency and cleanliness of the magnetic separation of the magnetic material.

Description

Technical Field

[0001] The invention relates to the technical field of coal processing, and in particular to a heavy medium magnetic separator for high-strength magnetic coal. Background Art

[0002] Magnetic separators are often used in the mining industry. The water produced by coal washing contains a large amount of metallic magnetic substances. Magnetic separators are needed to use strong magnetism to separate the metallic magnetic substances from the coal washing water.

[0003] The existing magnetic separator selects the magnetic materials in the coal washing water and then directly demagnetizes and discharges them, resulting in a high water content in the magnetic materials separated out, which requires dehydration. In addition, the magnetic materials are easily entrained with tiny particles of impurities, which are difficult to be fully separated from the magnetic materials, resulting in a low cleanliness of the magnetic materials separated out. Summary of the invention

[0004] The purpose of the present invention is to provide a heavy medium magnetic separator for high-strength magnetic coal, so as to solve the problem that in the prior art, the magnetic separator directly demagnetizes and discharges the magnetic materials in the coal washing water after selecting them, resulting in a large water content in the magnetic materials separated out, which requires dehydration treatment. In addition, the magnetic materials are easily entrained with tiny particle impurities, which are difficult to be fully separated from the magnetic materials, resulting in a low cleanliness of the magnetic materials separated out.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a heavy medium magnetic separator for high-strength magnetic coal, comprising a base, a magnetic separation tank arranged inside the base and a bracket installed on the top of the base, and also comprising:

[0006] A plurality of magnetic separation rollers are arranged inside the bracket;

[0007] The driving mechanism comprises a first gear mounted on one end of the magnetic separation roller, a gear ring mounted on the inner wall of one side of the bracket, and a first power assembly for driving the gear ring to rotate, wherein a plurality of the first gears are all meshed with the gear ring;

[0008] The adjusting mechanism comprises two driving disks and a second power assembly for driving the two driving disks to rotate, and the plurality of magnetic separation rollers are all rotatably connected inside the two driving disks;

[0009] The separation mechanism includes a debris collecting hood, a plurality of scraper assemblies installed inside the debris collecting hood, a negative pressure air duct installed on the top of the debris collecting hood, and a first displacement assembly for driving the debris collecting hood to move;

[0010] The collecting mechanism comprises a collecting shell arranged on one side of the top of the base, a scraping block installed inside the collecting shell and a second displacement component for driving the scraping block to move along the inside of the collecting shell.

[0011] Further, the first gear is fixedly connected to one end of the magnetic separation roller, and the gear ring is rotatably connected to the inner wall of the bracket;

[0012] The first power assembly includes a first motor installed on an outer wall of one side of the bracket and a first transmission shaft rotatably connected to the inside of the bracket, the output end of the first motor is fixedly connected to a second gear, and both ends of the first transmission shaft are fixedly connected to third gears, one of the third gears is located on one side of the first gear and meshes with the ring gear, and the other third gear is meshed with the second gear.

[0013] Further, the second power assembly includes a main shaft rotatably connected to the inside of the bracket and a second motor installed on an outer wall of one side of the bracket;

[0014] The two driving disks are fixedly sleeved on the outside of the main shaft, and the plurality of magnetic separation rollers are evenly distributed in a ring array with the main shaft as the center;

[0015] The output end of the second motor is fixedly connected to one end of the main shaft.

[0016] Furthermore, a coal-washing water pipe is installed inside the base, and the coal-washing water pipe is connected to the magnetic separation tank.

[0017] Furthermore, an arc-shaped groove is provided at the bottom of the collecting cover, and a plurality of the scraper assemblies are sequentially distributed along the arc-shaped track of the arc-shaped groove;

[0018] The scraper assembly includes a fixed plate fixed inside the arc groove and a plurality of scraper columns fixed to the bottom of the fixed plate. The plurality of scraper columns are distributed in sequence along the length direction of the fixed plate, and the bottom end of the scraper column is a hemispherical structure.

[0019] Further, the first displacement assembly includes a second transmission shaft rotatably connected to the inside of the bracket, a reciprocating screw fixedly sleeved on the outside of the second transmission shaft, and a fourth gear fixedly connected to one end of the second transmission shaft;

[0020] The outer thread of the reciprocating screw is connected with a slider, the bottom of the slider is fixedly connected with the top of the collecting cover, a slide groove is provided on the inner wall of the top of the bracket, and the slider is slidably connected inside the slide groove;

[0021] The fourth gear meshes with the second gear.

[0022] Further, the second displacement assembly includes a screw rod rotatably connected to the inside of the collection shell and a third motor installed at one end of the collection shell;

[0023] The scraper block is threadedly connected to the outside of the screw rod, and the scraper block is slidably connected to the inside of the collection shell. The top of the scraper block is provided with an arc-shaped scraper groove, and the inner wall of the scraper groove is adapted to the outer wall of the magnetic separation roller;

[0024] The output end of the third motor is fixedly connected to one end of the lead screw.

[0025] Furthermore, two cylinders are installed on one side of the top of the base, and the extended ends of the cylinders are fixedly connected to the outer wall of the collection shell;

[0026] Furthermore, an inclined baffle is installed on the other side of the top of the base, and a plurality of partitions are fixedly connected to the outside of the main shaft, and the partitions are located between two adjacent magnetic separation rollers.

[0027] Compared with the prior art, the high-strength magnetic coal heavy medium magnetic separator provided by the present invention has the following beneficial effects:

[0028] 1. When the magnetic separation roller rotates to the centrifugal dehydration station, the centrifugal force is generated as the magnetic separation roller rotates, and the liquid in the magnetic material outside the magnetic separation roller is thrown out, and the magnetic material selected from the coal washing water is fully dehydrated, which solves the problem of high water content of the magnetic material selected by magnetic separation in the prior art;

[0029] 2. When the magnetic separation roller rotates to the impurity removal station, the scraper columns on the impurity collecting cover move along the outer wall of the magnetic separation roller, and synchronously drive the magnetic separation roller to rotate, so that the scraper columns move along the outside of the magnetic separation roller during the rotation process, and repeatedly divide the magnetic material outside the magnetic separation roller, so that the granular impurities wrapped in the magnetic material are exposed, and the exposed granular impurities are removed with the suction force of the negative pressure air duct, so as to achieve the effect of automatically cleaning the magnetic material separated by the magnetic separation, and solve the problem in the prior art that the magnetic material separated by the magnetic separation contains a large number of tiny granular impurities and needs to be processed again;

[0030] 3. Through the continuous magnetic separation, dehydration, foreign matter cleaning and material removal of magnetic materials in coal washing water, the efficiency and cleanliness of magnetic separation are effectively improved, and the steps of subsequent fine processing of magnetic materials separated by magnetic separation are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the top structure of the base of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of the driving mechanism and the adjusting mechanism of the present invention;

[0035] Figure 4It is a schematic diagram of the structure of the first displacement assembly of the present invention;

[0036] Figure 5 It is a schematic diagram of the structure of the miscellaneous cover of the present invention;

[0037] Figure 6 It is a schematic diagram of the structure of the scraper assembly of the present invention;

[0038] Figure 7 It is a schematic diagram of the structure of the collecting mechanism of the present invention;

[0039] Figure 8 It is a schematic diagram of the baffle and partition structure of the present invention.

[0040] Description of reference numerals:

[0041] 1. Base; 2. Magnetic separation tank; 3. Bracket; 4. Magnetic separation roller; 5. First gear; 6. Gear ring; 7. Driving plate; 8. Collection cover; 9. Negative pressure air duct; 10. Collecting shell; 11. Scraper; 12. First motor; 13. First transmission shaft; 14. Second gear; 15. Third gear; 16. Main shaft; 17. Second motor; 18. Baffle; 19. Coal washing water pipe; 20. Fixed plate; 21. Scraper column; 22. Second transmission shaft; 23. Reciprocating screw; 24. Fourth gear; 25. Slider; 26. Screw; 27. Third motor; 28. Cylinder; 29. ​​Partition. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] Example: See Figure 1 - Figure 7 A heavy medium magnetic separator for high-strength magnetic coal comprises a base 1, a magnetic separation pool 2 arranged inside the base 1 and a bracket 3 installed on the top of the base 1. A coal washing water pipe 19 is installed inside the base 1, and the coal washing water pipe 19 is connected with the magnetic separation pool 2. The coal washing water is introduced into the magnetic separation pool 2 through the coal washing water pipe 19. A plurality of vertically arranged drainage pipes are installed inside the magnetic separation pool 2. The upper edge of the drainage pipe is located below the magnetic separation roller 4 located inside the magnetic separation pool 2, so that the coal washing water must pass through the bottom of the magnetic separation roller 4 when discharged from the drainage pipe, so as to fully remove the magnetic matter in the coal washing water.

[0044] Also includes:

[0045] A magnetic separation roller 4 is arranged inside the bracket 3, and a plurality of magnetic separation rollers 4 are provided. In this embodiment, the number of magnetic separation rollers 4 is four;

[0046] A driving mechanism, which includes a first gear 5 installed at one end of a magnetic separation roller 4, a gear ring 6 installed on an inner wall of one side of a bracket 3, and a first power assembly for driving the gear ring 6 to rotate, wherein a plurality of first gears 5 are all meshed with the gear ring 6, the first gear 5 is fixedly connected to one end of the magnetic separation roller 4, and the gear ring 6 is rotatably connected to the inner wall of the bracket 3; the first power assembly includes a first motor 12 installed on an outer wall of one side of the bracket 3 and a first transmission shaft 13 rotatably connected to the inside of the bracket 3, a second gear 14 is fixedly connected to the output end of the first motor 12, and third gears 15 are fixedly connected to both ends of the first transmission shaft 13, wherein one of the third gears 15 is located on one side of the first gear 5 and meshed with the gear ring 6, and another third gear 15 is meshed with the second gear 14;

[0047] The second gear 14 is driven to rotate by controlling the first motor 12, and the first transmission shaft 13 is driven to rotate through the meshing effect between the second gear 14 and the third gear 15, and the ring gear 6 is driven to rotate through the meshing effect between the third gear 15 and the ring gear 6, and the magnetic separation rollers 4 are driven to rotate synchronously through the meshing effect between each first gear 5 and the ring gear 6.

[0048] The regulating mechanism includes two driving disks 7 and a second power assembly for driving the two driving disks 7 to rotate. The plurality of magnetic separation rollers 4 are rotatably connected to the inside of the two driving disks 7. The second power assembly includes a main shaft 16 rotatably connected to the inside of the bracket 3 and a second motor 17 installed on the outer wall of one side of the bracket 3. The two driving disks 7 are fixedly sleeved on the outside of the main shaft 16. The plurality of magnetic separation rollers 4 are evenly distributed in a ring array with the main shaft 16 as the center. The output end of the second motor 17 is fixedly connected to one end of the main shaft 16.

[0049] The second motor 17 is controlled to drive the main shaft 16 to rotate clockwise, and then the driving disk 7 is used to drive each magnetic separation roller 4 to revolve around the main shaft 16, and the second motor 17 is controlled to drive the driving disk 7 to pause every time it rotates 90°, thereby driving each magnetic separation roller 4 to stay in the magnetic separation pool 2, the centrifugal dehydration station, the impurity removal station and the material removal station in turn.

[0050] The separation mechanism includes a collection cover 8, a plurality of scraper assemblies installed inside the collection cover 8, a negative pressure air duct 9 installed on the top of the collection cover 8, and a first displacement assembly for driving the collection cover 8 to move. The bottom of the collection cover 8 is provided with an arc groove, and the plurality of scraper assemblies are sequentially distributed along the arc track of the arc groove; the scraper assembly includes a fixed plate 20 fixedly connected to the inside of the arc groove and a plurality of scraper columns 21 fixedly connected to the bottom of the fixed plate 20, and the plurality of scraper columns 21 are sequentially distributed along the length direction of the fixed plate 20. The scraper columns 21 The bottom end of the bracket 3 is a hemispherical structure; the first displacement assembly includes a second transmission shaft 22 rotatably connected to the inside of the bracket 3, a reciprocating screw 23 fixedly sleeved on the outside of the second transmission shaft 22, and a fourth gear 24 fixedly connected to one end of the second transmission shaft 22; the external thread of the reciprocating screw 23 is connected to a slider 25, the bottom of the slider 25 is fixedly connected to the top of the collection cover 8, a slide groove is provided on the inner wall of the top of the bracket 3, and the slider 25 is slidably connected to the inside of the slide groove; the fourth gear 24 is meshed with the second gear 14;

[0051] When the magnetic separation roller 4 rotates to the impurity removal station, the second gear 14 is driven to rotate by controlling the first motor 12, and the second transmission shaft 22 is driven to rotate through the meshing effect between the second gear 14 and the fourth gear 24, and the reciprocating screw 23 rotates accordingly, driving the slider 25 to move back and forth along the outside of the reciprocating screw 23. In this process, the scraping columns 21 on the impurity collection cover 8 are driven to move synchronously along the outer wall of the magnetic separation roller 4, and when the first motor 12 drives the second gear 14 to rotate, the magnetic separation roller 4 is driven to rotate synchronously, so that the scraping columns 21 move horizontally along the outside of the magnetic separation roller 4 during the rotation process, and the magnetic material outside the magnetic separation roller 4 is segmented, so that the granular impurities wrapped in the magnetic material are exposed, and the exposed granular impurities are removed by the suction force of the negative pressure air duct 9, so as to achieve the effect of automatically cleaning the magnetic material separated by the magnetic separation;

[0052] After the impurities are cleaned, the impurity collecting cover 8 is driven to reset.

[0053] A collecting mechanism, which includes a collecting shell 10 arranged on one side of the top of the base 1, a scraper block 11 installed inside the collecting shell 10, and a second displacement assembly for driving the scraper block 11 to move along the inside of the collecting shell 10, the second displacement assembly including a screw rod 26 rotatably connected to the inside of the collecting shell 10 and a third motor 27 installed at one end of the collecting shell 10; the scraper block 11 is threadedly connected to the outside of the screw rod 26, and the scraper block 11 is slidably connected to the inside of the collecting shell 10, and a scraper groove with an arc structure is opened on the top of the scraper block 11, and the inner wall of the scraper groove is adapted to the outer wall of the magnetic separation roller 4; the output end of the third motor 27 is fixedly connected to one end of the screw rod 26, and two cylinders 28 are also installed on one side of the top of the base 1, and the extended end of the cylinder 28 is fixedly connected to the outer wall of the collecting shell 10;

[0054] When the magnetic separation roller 4 rotates to the stripping station, the cylinder 28 is controlled to extend, driving the collection shell 10 to move to the bottom of the magnetic separation roller 4. At this time, the lower edge of the scraping groove is at the same horizontal height as the lower edge of the magnetic separation roller 4. Then the magnetic separation roller 4 at the stripping station is powered off, and the magnetic material on the surface of the magnetic separation roller 4 automatically falls into the collection shell 10. However, there is still some residue. By driving the magnetic separation roller 4 to rotate, the third motor 27 is controlled to drive the screw rod 26 to rotate forward, driving the scraper block 11 to move forward along the bottom of the magnetic separation roller 4, and cleaning the residual magnetic material on the outside of the magnetic separation roller 4 to the inside of the collection shell 10. By controlling the third motor 27 to drive the screw rod 26 to rotate reversely, the scraper block 11 is driven to move backward along the bottom of the magnetic separation roller 4 to reset.

[0055] The distance that the scraper block 11 moves when the magnetic separation roller 4 rotates one circle is smaller than the width of the scraper block 11 , so that when the scraper block 11 moves, it cooperates with the rotation of the magnetic separation roller 4 to fully remove the material from the outside of the magnetic separation roller 4 .

[0056] Example 2: Please refer to Figure 8 This embodiment provides a technical solution based on the embodiment 1: an inclined baffle 18 is installed on the other side of the top of the base 1, and a plurality of partitions 29 are fixedly connected to the outside of the main shaft 16, and the partition 29 is located between two adjacent magnetic separation rollers 4;

[0057] When the magnetic separation roller 4 rotates to the centrifugal dehydration station, centrifugal force is generated as the magnetic separation roller 4 rotates, and the liquid in the magnetic material outside the magnetic separation roller 4 is thrown out, and the magnetic material selected from the coal washing water is fully dehydrated. The baffle 18 is set to prevent the thrown liquid from splashing on the top of the base 1, so that the thrown liquid flows back to the inside of the magnetic separation pool 2 along the baffle 18. At the same time, the partition 29 is set to prevent the thrown liquid from splashing to the outside of other magnetic separation rollers 4.

[0058] Working principle: When in use, the coal washing water is introduced into the magnetic separation pool 2 through the coal washing water pipe 19, and one of the magnetic separation rollers 4 is located inside the magnetic separation pool 2. The first motor 12 is controlled to drive the second gear 14 to rotate, and the meshing between the second gear 14 and the third gear 15 drives the first transmission shaft 13 to rotate, and the meshing between the third gear 15 and the gear ring 6 drives the gear ring 6 to rotate, and the meshing between each first gear 5 and the gear ring 6 drives each magnetic separation roller 4 to rotate synchronously. When the coal washing water is discharged from the drain pipe, it passes through the bottom of the magnetic separation roller 4. As the magnetic separation roller 4 rotates, the magnetic matter in the coal washing water is fully absorbed. When a certain amount of magnetic matter accumulates on the outside of the magnetic separation roller 4 currently located in the magnetic separation pool 2 and needs to be replaced, the supply to the magnetic separation pool is first suspended. 2 is injected with coal washing water, and then the second motor 17 is controlled to drive the main shaft 16 and the driving disk 7 to rotate clockwise by 90 degrees, driving the next magnetic separation roller 4 to enter the interior of the magnetic separation pool 2 to perform magnetic separation, and the magnetic separation roller 4 carrying the magnetic material rotates to the centrifugal dehydration station, that is, the left side of the main shaft 16. When the magnetic separation roller 4 rotates at this station, centrifugal force is generated to throw out the liquid in the magnetic material outside the magnetic separation roller 4, and the magnetic material selected from the coal washing water is fully dehydrated. The baffle 18 is set to prevent the thrown liquid from splashing on the top of the base 1, so that the thrown liquid flows back to the inside of the magnetic separation pool 2 along the baffle 18. At the same time, the partition 29 is set to prevent the thrown liquid from splashing to the outside of other magnetic separation rollers 4, and the magnetic material outside the magnetic separation roller 4 is dehydrated. After completion, the second motor 17 is controlled to drive the driving disk 7 to continue to rotate 90° clockwise, driving the dehydrated magnetic separation roller 4 to rotate to the impurity removal station, that is, above the main shaft 16, and the second gear 14 is driven to rotate by the first motor 12. The second transmission shaft 22 is driven to rotate through the meshing effect between the second gear 14 and the fourth gear 24, and the reciprocating screw 23 rotates accordingly, driving the slider 25 to move back and forth along the outside of the reciprocating screw 23. In this process, the scraping columns 21 on the impurity collection cover 8 are driven to move synchronously along the outer wall of the magnetic separation roller 4, and when the first motor 12 drives the second gear 14 to rotate, the magnetic separation roller 4 is driven to rotate synchronously, so that each scraping column 21 moves horizontally along the outside of the magnetic separation roller 4 during the rotation process, and the outside of the magnetic separation roller 4 The magnetic material is segmented to expose the granular impurities wrapped in the magnetic material, and the exposed granular impurities are removed by the suction force of the negative pressure air duct 9, so as to achieve the effect of automatically cleaning the magnetic material separated by magnetic separation. After the impurities inside the magnetic material are cleaned, the second motor 17 is controlled to drive the driving disk 7 to continue to rotate 90° clockwise, driving the magnetic separation roller 4 after impurities removal to rotate to the stripping station, that is, the right side of the main shaft 16, and the cylinder 28 is controlled to extend to drive the collection shell 10 to move to the bottom of the magnetic separation roller 4. At this time, the lower edge of the scraping groove and the lower edge of the magnetic separation roller 4 are at the same horizontal height, and then the magnetic separation roller 4 at the stripping station is powered off, and the magnetic material on the surface of the magnetic separation roller 4 automatically falls into the collection shell 10, but there is still residue, and by driving the magnetic separation roller 4 to rotate,At the same time, the third motor 27 is controlled to drive the screw rod 26 to rotate forward, drive the scraper block 11 to move forward along the bottom of the magnetic separation roller 4, and clean the magnetic substances remaining on the outside of the magnetic separation roller 4 to the inside of the collection shell 10. The third motor 27 is controlled to drive the screw rod 26 to reverse, drive the scraper block 11 to move backward along the bottom of the magnetic separation roller 4 to reset. After the stripping is completed, the second motor 17 is controlled to drive the drive disk 7 to continue to rotate 90° clockwise, drive the stripped magnetic separation roller 4 to rotate to the inside of the magnetic separation pool 2, that is, below the main shaft 16, and continue to adsorb the magnetic substances in the magnetic separation pool 2. In this cycle, continuous magnetic separation, dehydration, foreign matter cleaning and stripping of magnetic substances in coal washing water are realized.

[0059] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in the field understand the principle of the above invention, the specific details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is to automatically control by a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in the field; the above only describes some exemplary embodiments of the present invention by way of explanation. Undoubtedly, for ordinary technicians in the field, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A heavy medium magnetic separator for high-strength magnetic coal, comprising a base (1), a magnetic separation tank (2) arranged inside the base (1), and a bracket (3) installed on the top of the base (1), characterized in that: Also includes: A plurality of magnetic separation rollers (4) are arranged inside the bracket (3); A driving mechanism comprising a first gear (5) mounted on one end of the magnetic separation roller (4), a gear ring (6) mounted on an inner wall of one side of the bracket (3), and a first power assembly for driving the gear ring (6) to rotate, wherein a plurality of the first gears (5) are all meshed with the gear ring (6); An adjustment mechanism, comprising two drive disks (7) and a second power assembly for driving the two drive disks (7) to rotate, wherein the plurality of magnetic separation rollers (4) are all rotatably connected inside the two drive disks (7); A separation mechanism, comprising a debris collecting cover (8), a plurality of scraper assemblies installed inside the debris collecting cover (8), a negative pressure air duct (9) installed on the top of the debris collecting cover (8), and a first displacement assembly for driving the debris collecting cover (8) to move, wherein an arc-shaped groove is provided at the bottom of the debris collecting cover (8), and a plurality of scraper assemblies are sequentially distributed along the arc-shaped track of the arc-shaped groove; the scraper assembly comprises a fixed plate (20) fixedly connected to the inside of the arc-shaped groove and a plurality of scraper columns (21) fixedly connected to the bottom of the fixed plate (20), and the plurality of scraper columns (21) are sequentially distributed along the length direction of the fixed plate (20), and the bottom end of the scraper column (21) is a hemispherical structure; A collecting mechanism comprises a collecting shell (10) arranged on one side of the top of a base (1), a scraping block (11) installed inside the collecting shell (10), and a second displacement component for driving the scraping block (11) to move along the inside of the collecting shell (10).

2. The heavy medium magnetic separator for high-strength magnetic coal according to claim 1, characterized in that: The first gear (5) is fixedly connected to one end of the magnetic separation roller (4), and the ring gear (6) is rotatably connected to the inner wall of the bracket (3); The first power assembly comprises a first motor (12) mounted on an outer wall of one side of the bracket (3) and a first transmission shaft (13) rotatably connected to the inside of the bracket (3); a second gear (14) is fixedly connected to the output end of the first motor (12); and third gears (15) are fixedly connected to both ends of the first transmission shaft (13); one of the third gears (15) is located on one side of the first gear (5) and meshes with the ring gear (6); and the other third gear (15) meshes with the second gear (14).

3. The heavy medium magnetic separator for high-strength magnetic coal according to claim 2, characterized in that: The second power assembly comprises a main shaft (16) rotatably connected to the interior of the bracket (3) and a second motor (17) mounted on an outer wall of one side of the bracket (3); The two driving disks (7) are both fixedly sleeved on the outside of the main shaft (16), and the plurality of magnetic separation rollers (4) are evenly distributed in a ring array with the main shaft (16) as the center; The output end of the second motor (17) is fixedly connected to one end of the main shaft (16).

4. The heavy medium magnetic separator for high-strength magnetic coal according to claim 3, characterized in that: A coal-washing water pipe (19) is installed inside the base (1), and the coal-washing water pipe (19) is connected to the magnetic separation tank (2).

5. The heavy medium magnetic separator for high-strength magnetic coal according to claim 4, characterized in that: The first displacement assembly comprises a second transmission shaft (22) rotatably connected to the inside of the bracket (3), a reciprocating screw (23) fixedly sleeved on the outside of the second transmission shaft (22), and a fourth gear (24) fixedly connected to one end of the second transmission shaft (22); The reciprocating screw (23) is externally threadedly connected to a slider (25), the bottom of the slider (25) is fixedly connected to the top of the debris collecting cover (8), a slide groove is provided on the inner wall of the top of the bracket (3), and the slider (25) is slidably connected inside the slide groove; The fourth gear (24) meshes with the second gear (14).

6. The heavy medium magnetic separator for high-strength magnetic coal according to claim 5, characterized in that: The second displacement assembly comprises a screw rod (26) rotatably connected to the interior of the collection shell (10) and a third motor (27) mounted on one end of the collection shell (10); The scraper block (11) is threadedly connected to the outside of the screw rod (26), and the scraper block (11) is slidably connected to the inside of the collection shell (10), and a scraper groove with an arc structure is formed on the top of the scraper block (11), and the inner wall of the scraper groove is adapted to the outer wall of the magnetic separation roller (4); The output end of the third motor (27) is fixedly connected to one end of the screw rod (26).

7. The heavy medium magnetic separator for high-strength magnetic coal according to claim 6, characterized in that: Two cylinders (28) are also installed on one side of the top of the base (1), and the extended ends of the cylinders (28) are fixedly connected to the outer wall of the collection shell (10).

8. The heavy medium magnetic separator for high-strength magnetic coal according to claim 7, characterized in that: An inclined baffle (18) is installed on the other side of the top of the base (1), and a plurality of partitions (29) are fixedly connected to the outside of the main shaft (16), wherein the partitions (29) are located between two adjacent magnetic separation rollers (4).

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