Raw coal dense medium cyclone

Abstract

The invention discloses a raw coal dense medium cyclone, and relates to the technical field of coal mine coal dressing, the raw coal dense medium cyclone comprises a dense medium cyclone, a feeding pipe, a stirring piece and a flow guide piece, the dense medium cyclone is fixedly arranged on the ground, the feeding pipe is fixedly arranged on the dense medium cyclone and communicates with the dense medium cyclone, the stirring piece is rotationally arranged in the feeding pipe, and the flow guide piece is arranged on the stirring piece. The stirring piece can scatter agglomerated magnetic media, the flow guide piece is fixedly arranged in the feeding pipe, the flow guide piece is located under the stirring piece, and the flow guide piece can make heavy suspension liquid and raw coal enter the heavy medium cyclone in the tangential direction; the raw coal separation device has the effect of improving the separation precision when raw coal is subjected to separation treatment.

Description

Technical Field

[0001] This application relates to the field of coal preparation technology, and in particular to a heavy medium cyclone separator for raw coal. Background Technology

[0002] After coal is mined from underground, it is necessary to separate the impurities such as clean coal, middlings, and gangue contained in the raw coal. Due to its advantages such as high separation efficiency, large processing capacity, and compact structure, the heavy medium cyclone separator is widely used in the raw coal separation process.

[0003] One type of heavy medium cyclone consists of a feed pipe, a cyclone chamber, an overflow pipe, and an underflow port. When it is necessary to separate clean coal from middlings in raw coal, a magnetic medium is added to water to form a heavy suspension. The raw coal is then mixed with the heavy suspension. After mixing, the raw coal and heavy suspension enter the cyclone chamber through the feed pipe. Once inside the cyclone chamber, the raw coal and heavy suspension will form a spiral motion under the action of centrifugal force. The lower density clean coal rises with the inner cyclone and is discharged through the overflow pipe, while the higher density middlings and gangue are discharged through the underflow port, thereby achieving the separation of clean coal and middlings.

[0004] When separating clean coal and middlings using the above method, since the raw coal and heavy suspension are forcibly sent into the cyclone chamber by a high-pressure pump after mixing, some magnetic media may agglomerate or deposit due to the high pressure, resulting in uneven density distribution of the heavy suspension and thus affecting the separation accuracy of clean coal and middlings. Summary of the Invention

[0005] In order to improve the separation accuracy when separating raw coal, this application provides a heavy medium cyclone separator for raw coal.

[0006] This application provides a heavy medium cyclone separator for raw coal, employing the following technical solution: A heavy medium cyclone separator for raw coal, comprising: Includes a heavy medium cyclone separator, which is fixedly installed on the ground; The feed pipe is fixedly mounted on the heavy medium cyclone and is connected to the heavy medium cyclone. An agitator is rotatably disposed inside the feed pipe, which can break up agglomerated magnetic media; A flow guide is fixedly installed inside the feed pipe and located directly below the agitator. The flow guide enables the heavy suspension and raw coal to enter the heavy medium cyclone tangentially.

[0007] By adopting the above technical solution, during the separation of raw coal, the mixed raw coal and heavy suspension are conveyed to the feed pipe. After entering the feed pipe, the raw coal and heavy suspension move into the heavy medium cyclone. During this movement, the agitator is activated and begins to rotate. This rotation disperses any agglomerated magnetic media, ensuring its uniform dispersion within the heavy suspension. The dispersed magnetic media then continues to move downwards with the heavy suspension and raw coal, entering the heavy medium cyclone tangentially through the guide. Once inside the cyclone, the magnetic media remains uniformly distributed within the heavy suspension, ensuring a stable density field within the cyclone chamber and effectively improving the separation accuracy between clean coal and middlings.

[0008] Optionally, the agitator includes: The motor is fixedly mounted on the side wall of the feed pipe; A drive gear is rotatably mounted on the side wall of the feed pipe and is fixedly connected to the output shaft of the motor. A gear ring is rotatably mounted on the side wall of the feed pipe, and the gear ring meshes with the drive gear; An internal gear ring is rotatably mounted on the side wall of the feed pipe and is fixedly connected to the inner wall of the gear ring. A drive gear is rotatably mounted on the side wall of the feed pipe and meshes with the internal gear ring. A reduction gear is rotatably mounted on the side wall of the feed pipe, and the reduction gear is coaxially arranged with the drive gear; A first driven gear is rotatably mounted on the side wall of the feed pipe, and the first driven gear meshes with the reduction gear; An agitating gear is rotatably mounted on the side wall of the feed pipe, and the agitating gear meshes with the first driven gear; A stirring rod is rotatably disposed inside the feed pipe, and the stirring rod is fixedly connected to the stirring gear; The second driven gear is rotatably mounted on the side wall of the feed pipe. The second driven gear meshes with the reduction gear, and the second driven gear is located on the side of the reduction gear away from the first driven gear. A sector gear is rotatably mounted on the side wall of the feed pipe, and the sector gear is coaxially arranged with the second driven gear; A spray gear is rotatably mounted on the side wall of the feed pipe, and the spray gear meshes with the sector gear; A spray pipe, which is rotatably disposed inside the feed pipe and is fixedly connected to the spray gear; A nozzle is fixedly mounted on the spray pipe and communicates with the spray pipe, with the spray pipe facing the stirring rod; A water tank, which is fixedly installed on the ground; A water pump, which is fixedly mounted on the side wall of the water tank; The water outlet pipe has one end fixedly connected to the water pump and the other end fixedly connected to the spray pipe via a rotary joint.

[0009] By adopting the above technical solution, when it is necessary to separate raw coal, the raw coal and heavy suspension are mixed and then conveyed to the feed pipe. After the mixture of raw coal and heavy suspension enters the feed pipe, it moves downward along the feed pipe. At this time, the motor is started. After the motor rotates, it drives the drive gear to rotate. After the drive gear rotates, it drives the gear ring to rotate. After the gear ring rotates, it drives the inner gear ring to rotate. After the inner gear ring rotates, it drives the drive gear to rotate. After the drive gear rotates, it drives the reduction gear to rotate. After the reduction gear rotates, it drives the first driven gear and the second driven gear to rotate synchronously. After the first driven gear rotates, it drives the stirring gear to rotate. After the stirring gear rotates, it drives the stirring rod to rotate. After the stirring rod rotates, it can disperse the agglomerated magnetic medium that has passed through the stirring rod. The second driven gear rotates, driving the sector gear to rotate. The sector gear periodically meshes with the spray gear. When meshed, the sector gear drives the spray gear to rotate, which in turn drives the spray pipe to rotate. The spray pipe then drives the nozzles to rotate. At this point, the water pump is activated, delivering high-pressure water to the spray pipe. Since the nozzles are connected to the spray pipe and face the agitator, the high-pressure water is sprayed onto the agitator as it passes through the spray pipe. The water then washes away the magnetic medium adhering to the agitator, allowing it to flow along with the heavy suspension and raw coal through the guide into the heavy medium cyclone separator. This prevents the magnetic medium from accumulating on the agitator and preventing it from rotating. This method effectively separates clean coal and middlings, avoiding uneven distribution of magnetic medium in the heavy suspension entering the heavy medium cyclone separator, which could lead to decreased separation accuracy. This significantly improves the separation accuracy between middlings and clean coal.

[0010] Optionally, the flow guide includes: A guide plate is fixedly installed inside the feed pipe, located directly below the stirring rod, and the guide plate is cone-shaped. Multiple prisms are spaced apart along the guide plate, and each prism is fixedly connected to the guide plate.

[0011] By adopting the above technical solution, when the raw coal and heavy suspension flow downward through the stirring rod, the guide plate can re-aggregate the dispersed raw coal and heavy suspension and allow the raw coal and heavy suspension to slide downward along the rib plate, avoiding the phenomenon of flow deviation or turbulence during the fall of the raw coal and heavy suspension. This ensures that the raw coal and heavy suspension can enter the heavy medium cyclone tangentially and form a stable vortex field, thereby improving the stability of separating clean coal and middlings.

[0012] Optionally, a torsion spring is rotatably mounted on the spray pipe, with one end of the torsion spring fixedly connected to the spray pipe and the other end of the torsion spring fixedly connected to the inner wall of the feed pipe.

[0013] By adopting the above technical solution, the torsion spring allows the spray pipe to quickly return to its original position after the sector gear disengages from the spray gear, preventing the nozzle from deviating from the stirring rod due to excessive rotation angle of the spray pipe. This ensures that the nozzle can continuously flush the magnetic medium on the stirring rod, thereby preventing the magnetic medium from accumulating on the surface of the stirring rod and improving the cleaning effect when cleaning the stirring rod.

[0014] Optionally, multiple agitator rods are provided at intervals along the agitator gear.

[0015] By adopting the above technical solution, the arrangement of multiple stirring rods allows the agglomerated magnetic medium to be repeatedly stirred and dispersed by multiple stirring rods when passing through them. This avoids the situation where the magnetic medium cannot make sufficient contact with the stirring rod when passing through a single stirring rod, resulting in the magnetic medium agglomerates not being completely dispersed. This effectively improves the uniformity of the magnetic medium in the heavy suspension.

[0016] Optionally, multiple nozzles are arranged at intervals along the spray pipe.

[0017] By adopting the above technical solution, the arrangement of multiple nozzles allows the high-pressure water jets from the nozzles to fully cover the surface of the agitator rod, avoiding the presence of cleaning blind spots on the surface of the agitator rod that could lead to the local accumulation of magnetic media on the agitator rod, thereby further improving the cleaning effect when cleaning the agitator rod.

[0018] Optionally, a protective cover is fixedly provided on the side wall of the feed pipe, and the protective cover covers the drive gear and the gear ring.

[0019] By adopting the above technical solution, the protective cover can prevent external impurities from entering the meshing area of ​​multiple gears, thus preventing gear wear or jamming caused by external impurities and extending the service life of multiple gears.

[0020] Optionally, the surfaces of the guide plate and the prism plate are coated with a wear-resistant coating.

[0021] By adopting the above technical solution, during the process of heavy suspension and raw coal sliding along the surface of the guide plate and prism plate, the wear-resistant coating can reduce the wear on the surface of the guide plate and prism plate, avoid excessive surface wear of the guide plate and prism plate due to long-term scouring by raw coal and heavy suspension, and thus extend the service life of the guide plate and prism plate.

[0022] In summary, the embodiments of the present invention provide a raw coal heavy medium cyclone, which includes at least one of the following beneficial technical effects: 1. In the separation process of raw coal, the mixed raw coal and heavy suspension are conveyed to the feed pipe. After entering the feed pipe, the raw coal and heavy suspension move into the heavy medium cyclone. During this movement, the agitator is activated. The agitator rotates, breaking up any agglomerated magnetic media, thus ensuring its uniform dispersion within the heavy suspension. The dispersed magnetic media continues to move downwards with the heavy suspension and raw coal, entering the heavy medium cyclone tangentially through the guide. Once inside the cyclone, the magnetic media remains uniformly distributed within the heavy suspension, ensuring a stable density field within the cyclone chamber and effectively improving the separation accuracy between clean coal and middlings.

[0023] 2. When it is necessary to separate raw coal, the raw coal and heavy suspension are mixed and then fed into the feed pipe. After entering the feed pipe, the mixture of raw coal and heavy suspension moves downward along the feed pipe. At this time, the motor is started. After the motor rotates, it drives the drive gear to rotate. After the drive gear rotates, it drives the gear ring to rotate. After the gear ring rotates, it drives the inner gear ring to rotate. After the inner gear ring rotates, it drives the drive gear to rotate. After the drive gear rotates, it drives the reduction gear to rotate. After the reduction gear rotates, it drives the first driven gear and the second driven gear to rotate synchronously. After the first driven gear rotates, it drives the stirring gear to rotate. After the stirring gear rotates, it drives the stirring rod to rotate. After the stirring rod rotates, it can break up the agglomerated magnetic medium that has passed through the stirring rod. The second driven gear rotates, driving the sector gear to rotate. The sector gear periodically meshes with the spray gear. When meshed, the sector gear drives the spray gear to rotate, which in turn drives the spray pipe to rotate. The spray pipe then drives the nozzles to rotate. At this point, the water pump is activated, delivering high-pressure water to the spray pipe. Since the nozzles are connected to the spray pipe and face the agitator, the high-pressure water is sprayed onto the agitator as it passes through the spray pipe. The water then washes away the magnetic medium adhering to the agitator, allowing it to flow along with the heavy suspension and raw coal through the guide into the heavy medium cyclone separator. This prevents the magnetic medium from accumulating on the agitator and preventing it from rotating. This method effectively separates clean coal and middlings, avoiding uneven distribution of magnetic medium in the heavy suspension entering the heavy medium cyclone separator, which could lead to decreased separation accuracy. This significantly improves the separation accuracy between middlings and clean coal.

[0024] 3. When the raw coal and heavy suspension flow downward through the agitator, the guide plate can re-aggregate the dispersed raw coal and heavy suspension and allow them to slide downward along the rib plate, avoiding flow deviation or turbulence during the fall. This ensures that the raw coal and heavy suspension can enter the heavy medium cyclone tangentially and form a stable vortex field, thereby improving the stability of separating clean coal and middlings. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a heavy medium cyclone separator for raw coal provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the feed pipe in a heavy medium cyclone separator for raw coal, provided by an embodiment of the present invention. Figure 3 This is a schematic diagram of the agitator in a heavy medium cyclone separator for raw coal, provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the flow guide in a heavy medium cyclone separator for raw coal, provided as an embodiment of the present invention.

[0026] Explanation of the markings in the image: 1. Heavy medium cyclone separator; 11. Feed pipe; 2. Agitator; 21. Motor; 22. Drive gear; 23. Gear ring; 24. Internal gear ring; 25. Drive gear; 26. Reduction gear; 27. First driven gear; 28. Agitator gear; 29. ​​Agitator rod; 291. Second driven gear; 292. Sector gear; 293. Spray gear; 294. Nozzle; 295. Water tank; 296. Water pump; 297. Water outlet pipe; 298. Rotary joint; 299. Spray pipe; 3. Guide component; 31. Guide plate; 32. Prism plate; 4. Torsion spring; 5. Protective cover. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0028] Combination Figure 1 This application discloses a heavy medium cyclone separator for raw coal, including a heavy medium cyclone separator 1, a feed pipe 11, an agitator 2, and a guide 3. The heavy medium cyclone separator 1 is fixedly installed on the ground, and the feed pipe 11 is fixedly installed on the heavy medium cyclone separator 1 and is connected to the heavy medium cyclone separator 1. The agitator 2 is rotatably installed inside the feed pipe 11 and can disperse agglomerated magnetic media. The guide 3 is fixedly installed inside the feed pipe 11 and is located directly below the agitator 2. The guide 3 enables the heavy suspension and raw coal to enter the heavy medium cyclone separator 1 tangentially.

[0029] In this embodiment, the heavy medium cyclone 1 is fixedly installed on the ground by bolt connection. The feed pipe 11 has a cylindrical structure and can be fixedly connected to the heavy medium cyclone 1 by integral molding or by welding; no specific limitation is made in this embodiment. The specifications of the agitator 2 match the specifications of the feed pipe 11, and the specifications of the agitator 2 ensure that it can rotate inside the feed pipe 11. The guide 3 can be fixedly connected to the feed pipe 11 by integral molding or by welding; no specific limitation is made in this embodiment.

[0030] In practical use, when it is necessary to separate clean coal and middlings, the raw coal and heavy suspension are mixed and fed into the feed pipe 11. After entering the feed pipe 11, the raw coal and heavy suspension flow into the heavy medium cyclone 1. At this time, the agitator 2 is activated, which disperses the agglomerated magnetic medium, allowing it to be evenly dispersed in the heavy suspension. The dispersed magnetic medium, heavy suspension, and raw coal continue to flow downwards. When the heavy suspension and raw coal pass through the guide 3, the guide 3 re-aggregates the dispersed heavy suspension and raw coal and guides them tangentially into the heavy medium cyclone 1. After entering the heavy medium cyclone 1, the clean coal and middlings are separated under centrifugal force.

[0031] Combination Figure 2 , Figure 3 and Figure 4In a specific embodiment, the agitator 2 includes a motor 21, a drive gear 22, a gear ring 23, an internal gear ring 24, a drive gear 25, a reduction gear 26, a first driven gear 27, an agitating gear 28, an agitating rod 29, a second driven gear 291, a sector gear 292, a spray gear 293, a spray pipe 299, a nozzle 294, a water tank 295, a water pump 296, and a water outlet pipe 297. The motor 21 is fixedly mounted on the side wall of the feed pipe 11, and the drive gear 22 is rotatably mounted on the side wall of the feed pipe 11. The drive gear 22 is fixedly connected to the output shaft of the motor 21. A gear ring 23 is rotatably mounted on the side wall of the feed pipe 11, meshing with the drive gear 22. An internal gear ring 24 is rotatably mounted on the side wall of the feed pipe 11, fixedly connected to the inner wall of the gear ring 23. A drive gear 25 is rotatably mounted on the side wall of the feed pipe 11, meshing with the internal gear ring 24. A reduction gear 26 is rotatably mounted on the side wall of the feed pipe 11, coaxially arranged with the drive gear 25. A first driven gear 27 is rotatably mounted on the side wall of the feed pipe 11, meshing with the reduction gear 26. A stirring gear 28 is rotatably mounted on the side wall of the feed pipe 11. On the side wall of the feed pipe 11, an agitating gear 28 meshes with a first driven gear 27. An agitating rod 29 is rotatably disposed inside the feed pipe 11 and is fixedly connected to the agitating gear 28. A second driven gear 291 is rotatably disposed on the side wall of the feed pipe 11 and meshes with a reduction gear 26. The second driven gear 291 is located on the side of the reduction gear 26 away from the first driven gear 27. A sector gear 292 is rotatably disposed on the side wall of the feed pipe 11 and is coaxially disposed with the second driven gear 291. A spray gear 293 is rotatably disposed on the feed pipe. On the side wall of feed pipe 11, spray gear 293 meshes with sector gear 292. Spray pipe 299 is rotatably installed inside feed pipe 11 and is fixedly connected to spray gear 293. Nozzle 294 is fixedly installed on spray pipe 299 and communicates with spray pipe 299. Spray pipe 299 faces stirring rod 29. Water tank 295 is fixedly installed on the ground. Water pump 296 is fixedly installed on the side wall of water tank 295. One end of water outlet pipe 297 is fixedly connected to water pump 296, and the other end of water outlet pipe 297 is fixedly connected to spray pipe 299 through rotary joint 298. Torsion spring 4 is rotatably installed on spray pipe 299. One end of torsion spring 4 is fixedly connected to spray pipe 299, and the other end of torsion spring 4 is fixedly connected to inner wall of feed pipe 11. Multiple stirring rods 29 are spaced along stirring gear 28. Multiple nozzles 294 are spaced along spray pipe 299. A protective cover 5 is fixedly installed on the side wall of the feed pipe 11, which covers the drive gear 22 and the gear ring 23.

[0032] In this embodiment, the motor 21 is fixedly connected to the feed pipe 11 by bolts, the drive gear 22 is fixedly connected to the output shaft of the motor 21 by integral molding, the specifications of the gear ring 23 match the specifications of the side wall of the feed pipe 11, and the internal gear ring 24 can be fixedly connected to the inner wall of the gear ring 23 by integral molding or by welding, which is not specifically limited in this embodiment. The gear ratio of the reduction gear 26 to the drive gear 25 is 1:2. The reduction gear 26 can be fixedly connected to the drive gear 25 by integral molding or by welding, which is not specifically limited in this embodiment. The stirring rod 29 has a cylindrical structure. The stirring rod 29 can be fixedly connected to the stirring gear 28 by integral molding or by welding, which is not specifically limited in this embodiment. The sector gear 292 is fixedly connected to the second driven gear 291 by integral molding, the spray gear 293 is fixedly connected to the spray pipe 299 by integral molding, and the nozzle 294 is fixedly connected to the spray pipe 299 by integral molding. The water tank 295 is fixed to the ground by bolts. The water pump 296 is fixedly connected to the side wall of the water tank 295 by bolts. The outlet pipe 297 is fixedly connected to the water pump 296 by a flange. The torsion spring 4 is fixedly connected to the inner wall of the spray pipe 299 and the feed pipe 11 by integral molding. The protective cover 5 is a cylindrical structure. The protective cover 5 can be fixedly connected to the side wall of the feed pipe 11 by integral molding or by welding. No specific limitation is made in this embodiment.

[0033] In practical use, when it is necessary to separate the fine coal and middlings in the raw coal, the mixed raw coal and heavy suspension are transported into the feed pipe 11. After entering the feed pipe 11, the raw coal and heavy suspension flow along the feed pipe 11 towards the heavy medium cyclone 1. At this time, the motor 21 is started. After the motor 21 rotates, it drives the drive gear 22 to rotate. After the drive gear 22 rotates, it drives the gear ring 23 to rotate. After the gear ring 23 rotates, it drives the inner gear ring 24 to rotate. After the inner gear ring 24 rotates, it drives the drive gear 25 to rotate. After the drive gear 25 rotates, it drives the reduction gear 26 to rotate. After the reduction gear 26 rotates, it drives the first driven gear 27 and the second driven gear 291 to rotate. After the first driven gear 27 rotates, it drives the stirring gear 28 to rotate. After the stirring gear 28 rotates, it drives multiple stirring rods 29 to rotate. After the stirring rods 29 rotate, they can disperse the agglomerated magnetic medium that has passed through the stirring rods 29, so that the magnetic medium can be evenly dispersed in the heavy suspension. After the second driven gear 291 rotates, it drives the sector gear 292 to rotate. After the sector gear 292 rotates, it can periodically mesh with the spray gear 293. When the sector gear 292 meshes with the spray gear 293, it can drive the spray pipe 299 to rotate. After the spray pipe 299 rotates, it drives multiple nozzles 294 to rotate. At this time, the water pump 296 is started. After the water pump 296 starts, it can transport the water in the water tank 295 to the spray pipe 299 through the water outlet pipe 297. After the water enters the spray pipe 299, it is sprayed out through the nozzles 294. After the water is sprayed out by the nozzles 294, the magnetic medium adhering to the stirring rod 29 can be removed, so as to avoid the magnetic medium adhering to the surface of the stirring rod 29 for a long time, which would prevent the stirring rod 29 from rotating normally. When the sector gear 292 disengages from the spray gear 293, the spray pipe 299 stops rotating. At this time, the spray pipe 299 can return to its initial angle under the action of the torsion spring 4. After the spray pipe 299 returns to its initial angle, the nozzle 294 can be re-aligned with the agitator 29. When the sector gear 292 engages with the spray gear 293 again, the spray pipe 299 rotates again. After the spray pipe 299 rotates, it can rinse the agitator 29 again, thereby realizing periodic automatic rinsing.

[0034] The protective cover 5 prevents external impurities from entering the meshing area of ​​multiple gears, thereby preventing dust and particulate matter from causing the gears to jam or wear more rapidly during rotation, thus extending the service life of the gears.

[0035] Combination Figure 4 In a specific embodiment, the flow guide 3 includes a flow guide plate 31 and prism plates 32. The flow guide plate 31 is fixedly disposed inside the feed pipe 11, located directly below the stirring rod 29, and is cone-shaped. Multiple prism plates 32 are spaced apart along the flow guide plate 31, and each prism plate 32 is fixedly connected to the flow guide plate 31. The surfaces of the flow guide plate 31 and the prism plates 32 are coated with a wear-resistant coating.

[0036] In this embodiment, the guide plate 31 can be integrally formed and fixedly connected to the inner wall of the feed pipe 11, or it can be connected by welding. No specific limitation is made in this embodiment. The rib plate 32 is integrally formed and fixedly connected to the guide plate 31. The wear-resistant coating material can be tungsten carbide or polytetrafluoroethylene. No specific limitation is made in this embodiment.

[0037] In practical use, when the raw coal and heavy suspension move downwards via the agitator 29, the guide plate 31 can redirect the dispersed raw coal and heavy suspension back to the conical surface of the guide plate 31, and allow the raw coal and heavy suspension to flow downwards along the prism plate 32, thereby ensuring that the raw coal and heavy suspension enter the heavy medium cyclone 1 tangentially. The wear-resistant coating reduces wear on the guide plate 31 and prism plate 32 during long-term contact with the raw coal and heavy suspension, thus extending their service life.

[0038] The principle of this embodiment is as follows: When it is necessary to separate clean coal and middlings, the mixed raw coal and heavy suspension are fed into the feed pipe 11. After the raw coal and heavy suspension enter the feed pipe 11, the motor 21 is started. The motor 21 rotates and drives the drive gear 22 to rotate. The drive gear 22 rotates and drives the gear ring 23 to rotate. The gear ring 23 rotates and drives the inner gear ring 24 to rotate. The inner gear ring 24 rotates and drives the drive gear 25 to rotate. The drive gear 25 rotates and drives the reduction gear 26 to rotate. The reduction gear 26 rotates and drives the first driven gear 27 and the second driven gear 291 to rotate. The first driven gear 27 rotates and drives the stirring gear 28 to rotate. The stirring gear 28 rotates and drives multiple stirring rods 29 to rotate. The rotation of the stirring rods 29 can disperse the agglomerated magnetic medium that has passed through the stirring rods 29, so that the magnetic medium can be evenly dispersed in the heavy suspension. After the second driven gear 291 rotates, it drives the sector gear 292 to rotate. After the sector gear 292 rotates, it can periodically mesh with the spray gear 293. When the sector gear 292 meshes with the spray gear 293, it can drive the spray pipe 299 to rotate. After the spray pipe 299 rotates, it drives multiple nozzles 294 to rotate. At this time, the water pump 296 is started. After the water pump 296 starts, it can transport the water in the water tank 295 to the spray pipe 299 through the water outlet pipe 297. After the water enters the spray pipe 299, it is sprayed out through the nozzles 294. After the water is sprayed out by the nozzles 294, the magnetic medium adhering to the stirring rod 29 can be removed, so as to avoid the magnetic medium adhering to the surface of the stirring rod 29 for a long time, which would prevent the stirring rod 29 from rotating normally. After passing the agitator 29, the raw coal and heavy suspension continue to move downwards. When they pass the guide plate 31, the dispersed raw coal and heavy suspension re-aggregate and enter the heavy medium cyclone 1 tangentially along the rib plate 32. After entering the heavy medium cyclone 1, the agglomerated magnetic medium is fully dispersed by the agitator 29, ensuring a uniform and stable density of the heavy suspension. This results in a more uniform distribution of the centrifugal force field within the heavy medium cyclone 1, thereby improving the separation accuracy of the raw coal and middlings.

[0039] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A heavy medium cyclone separator for raw coal, characterized in that, include: Heavy medium cyclone (1), which is fixedly installed on the ground; Feed pipe (11), the feed pipe (11) is fixedly installed on the heavy medium cyclone (1), and the feed pipe (11) is connected to the heavy medium cyclone (1); A stirring element (2) is rotatably disposed inside the feed pipe (11). The stirring element (2) can break up the agglomerated magnetic medium. The guide (3) is fixedly installed inside the feed pipe (11). The guide (3) is located directly below the agitator (2). The guide (3) enables the heavy suspension and raw coal to enter the heavy medium cyclone (1) tangentially.

2. The raw coal heavy medium cyclone according to claim 1, characterized in that, The agitator (2) includes: The motor (21) is fixedly mounted on the side wall of the feed pipe (11); The drive gear (22) is rotatably mounted on the side wall of the feed pipe (11), and the drive gear (22) is fixedly connected to the output shaft of the motor (21); A gear ring (23) is rotatably mounted on the side wall of the feed pipe (11), and the gear ring (23) meshes with the drive gear (22); Internal toothed ring (24), the internal toothed ring (24) is rotatably disposed on the side wall of the feed pipe (11), and the internal toothed ring (24) is fixedly connected to the inner wall of the toothed ring (23); A drive gear (25) is rotatably mounted on the side wall of the feed pipe (11), and the drive gear (25) meshes with the internal gear ring (24); A reduction gear (26) is rotatably mounted on the side wall of the feed pipe (11), and the reduction gear (26) is coaxially mounted with the drive gear (25); The first driven gear (27) is rotatably mounted on the side wall of the feed pipe (11), and the first driven gear (27) meshes with the reduction gear (26); A stirring gear (28) is rotatably mounted on the side wall of the feed pipe (11), and the stirring gear (28) meshes with the first driven gear (27); A stirring rod (29) is rotatably disposed inside the feed pipe (11), and the stirring rod (29) is fixedly connected to the stirring gear (28); The second driven gear (291) is rotatably disposed on the side wall of the feed pipe (11). The second driven gear (291) meshes with the reduction gear (26), and the second driven gear (291) is located on the side of the reduction gear (26) away from the first driven gear (27). A sector gear (292) is rotatably mounted on the side wall of the feed pipe (11), and the sector gear (292) is coaxially mounted with the second driven gear (291); Spray gear (293), which is rotatably mounted on the side wall of the feed pipe (11), and meshes with the sector gear (292); Spray pipe (299), the spray pipe (299) is rotatably disposed inside the feed pipe (11), and the spray pipe (299) is fixedly connected to the spray gear (293); Nozzle (294), the nozzle (294) is fixedly disposed on the spray pipe (299), the nozzle (294) is connected to the spray pipe (299), and the spray pipe (299) faces the stirring rod (29). Water tank (295), which is fixedly installed on the ground; A water pump (296) is fixedly mounted on the side wall of the water tank (295); The water outlet pipe (297) is fixedly connected at one end to the water pump (296), and the other end of the water outlet pipe (297) is fixedly connected to the spray pipe (299) through a rotary joint (298).

3. A heavy medium cyclone separator for raw coal according to claim 2, characterized in that, The flow guide (3) includes: The guide plate (31) is fixedly installed inside the feed pipe (11). The guide plate (31) is located directly below the stirring rod (29) and is cone-shaped. Multiple prism plates (32) are arranged at intervals along the guide plate (31), and each prism plate (32) is fixedly connected to the guide plate (31).

4. A heavy medium cyclone separator for raw coal according to claim 2, characterized in that, A torsion spring (4) is rotatably mounted on the spray pipe (299). One end of the torsion spring (4) is fixedly connected to the spray pipe (299), and the other end of the torsion spring (4) is fixedly connected to the inner wall of the feed pipe (11).

5. A heavy medium cyclone separator for raw coal according to claim 2, characterized in that, The stirring rods (29) are arranged in multiple intervals along the stirring gear (28).

6. A heavy medium cyclone separator for raw coal according to claim 2, characterized in that, The nozzles (294) are arranged at intervals along the spray pipe (299).

7. A heavy medium cyclone separator for raw coal according to claim 2, characterized in that, A protective cover (5) is fixedly installed on the side wall of the feed pipe (11), and the protective cover (5) covers the drive gear (22) and the gear ring (23).

8. A heavy medium cyclone separator for raw coal according to claim 3, characterized in that, The surfaces of the guide plate (31) and the prism plate (32) are coated with a wear-resistant coating.

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