Dense medium sorting device with desliming and non-desliming structure

Abstract

A dense medium separation device with a desliming and non-desliming structure comprises a dense medium separation screen, a coal washing chute and an intelligent control assembly, and is characterized in that the dense medium separation screen comprises a clean coal screen, a middling coal screen and a gangue screen, and the dense medium separation screen comprises a magnetic separation and flow guide integrated assembly, a high-pressure pulse cleaning assembly and a high-pressure washing assembly; the coal washing chute comprises a chute assembly and a medium switching assembly, the intelligent control assembly is arranged to be of a module integrated structure, the three-stage magnetic separation assembly comprises a clean coal, middling coal and gangue three-stage magnetic separation unit, and a desliming screen I and a desliming screen II are arranged at lower ports of a branch channel I and a branch channel II correspondingly. And lower ports of the branch channel III and the branch channel IV and oversize product discharge ports of the desliming screen I and the desliming screen II are communicated with a medium cyclone through a Z-shaped inclined plate chute and a feeding funnel. The problems that an efficient pre-separation dense medium separating screen cannot be used, a coal washing chute for on-line switching of a desliming separation process and a non-desliming separation process cannot be used, and a three-stage magnetic separation assembly cannot be used are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heavy medium sorting technical field especially relates to a heavy medium sorting device with desliming and non-desliming structure. BACKGROUND

[0002] In the field of coal processing and utilization, heavy medium sorting uses heavy medium (such as magnetite powder) as sorting medium, realizes effective separation of coal and impurities through gravity and medium buoyancy, and is widely used due to its high sorting precision, strong adaptability and large processing capacity, and is particularly suitable for sorting of difficult-to-wash coal and extremely difficult-to-wash coal, which is an important means to improve coal quality and realize efficient utilization of coal resources. However, the heavy medium sorting device of the prior art cannot use a high-efficiency pre-desliming heavy medium sorting screen, cannot quickly collect and recycle magnetic heavy medium, cannot reduce the load of subsequent desliming equipment, cannot effectively save costs and improve overall coal washing efficiency, cannot automatically adjust the washing intensity according to real-time data of pressure and material flow, cannot regularly or automatically clean the screen, cannot use a coal washing chute that switches between desliming and non-desliming sorting processes online, cannot automatically control and switch between desliming and non-desliming sorting processes online in real time according to the type of coal, cannot compare raw coal data directly with multi-coal quality characteristic data information in a storage card, cannot use a combined design of a three-stage magnetic separation assembly, cannot perform three-stage desliming on the three desliming links of clean coal, middlings and gangue after heavy medium sorting, cannot maximize the recycling of heavy medium, and cannot effectively reduce the loss of heavy medium resources.

[0003] Patent No. ZL202321245609.6 discloses an "efficient heavy medium sorting system with reduced medium consumption", which comprises a pressureless three-product heavy medium cyclone, an arc screen, a desliming screen, a primary flow divider box, a clean coal centrifuge, a medium combining barrel, a dilute medium barrel, a clean coal magnetic separator, the gangue outlet, the middlings outlet and the clean coal outlet of the pressureless three-product heavy medium cyclone are connected with the arc screen, the screen of the arc screen is connected with the desliming screen, the screen of the desliming screen is connected with the primary flow divider box, the screen of the desliming screen of the gangue and the middlings is connected with the medium combining barrel, the screen of the desliming screen of the gangue and the middlings is connected with the dilute medium barrel, the dilute medium barrel is connected with a dilute medium sorting assembly, the dilute medium section of the screen of the desliming screen of the clean coal is connected with the medium combining barrel and a clean coal magnetic tail barrel through the clean coal magnetic separator, the clean coal magnetic tail barrel is connected with a clean coal reselection assembly, and the system has the advantages of simple system, good medium recycling effect, high sorting efficiency and reduced medium consumption.

[0004] The invention patent with the patent number ZL202311284063.X discloses a "full-grain heavy medium ore dressing system and ore dressing method", which comprises a grading unit, a heavy medium coarse-grained separation unit, a fine-grained desliming unit, a heavy medium fine-grained separation unit, and a fine-grained desliming / dewatering unit. The grading unit is used to divide the material into coarse-grained and fine-grained units. The coarse-grained outlet of the grading unit is connected with the heavy medium coarse-grained separation unit. The fine-grained outlet of the grading unit is sequentially connected with the fine-grained desliming unit, the heavy medium fine-grained separation unit, and the fine-grained desliming / dewatering unit. The invention breaks the disadvantages of the lower limit of heavy medium separation particle size, has the advantages of high comprehensive yield, good separation effect, small equipment investment, low production cost, energy saving and environmental protection, etc. SUMMARY

[0005] To solve the above technical problems, the utility model provides a heavy medium separation device with desliming and non-desliming structure, which is provided with a heavy medium separation screen, a coal washing chute, a three-stage magnetic separation assembly, an intelligent control assembly and a heavy medium recovery bin, etc. It realizes rapid collection and recycling of magnetic heavy medium, reduces the load of subsequent desliming equipment, effectively saves costs, improves overall coal washing efficiency, automatically adjusts the washing intensity according to real-time data of pressure and material flow, regularly or automatically cleans the screen, automatically controls and real-time online switches the desliming and non-desliming separation process according to the type of coal quality, compares the raw coal data directly with the multi-coal quality characteristic data information in the storage card, and carries out three-stage desliming on the three desliming links of clean coal, medium coal and gangue after heavy medium separation. The heavy medium is recycled to the greatest extent, and the loss of heavy medium resources is effectively reduced, effectively solving the above technical problems.

[0006] To achieve the above purpose, the utility model adopts the technical scheme to solve its technical problems:

[0007] The heavy medium separation device with desliming and non-desliming structure comprises a heavy medium separation screen, a coal washing chute and an intelligent control assembly, characterized in that,

[0008] The heavy medium separation screen is provided with a clean coal screen, a medium coal screen and a gangue screen. The heavy medium separation screen comprises a magnetic separation and flow guide integrated assembly, a cavity, a screen plate I, a screen plate II, a high-pressure pulse cleaning assembly, a high-pressure washing assembly and a support frame. The magnetic separation and flow guide integrated assembly comprises a flow guide groove, a magnetic separation roller and a drive motor. The high-pressure pulse cleaning assembly comprises a gas pipe, a high-pressure nozzle, a compressor and a vibration sensor. The high-pressure washing assembly comprises a liquid pipe, a nozzle, a circulating pump I, a flow sensor and a pressure sensor. The gas pipe and the liquid pipe are both provided in a serpentine coil structure.

[0009] The coal washing chute comprises a chute assembly, a medium switching assembly and a fixed support device, the chute assembly comprises a five-way branched chute and a plug-in gate, the five-way branched chute is arranged in a downward inclined structure along a conveying direction, the five-way branched chute comprises a main channel and four branch channels, the four branch channels are branch channel I, branch channel II, branch channel III and branch channel IV respectively, the medium switching assembly comprises a water medium supply pipe, a heavy medium supply pipe, a three-way electromagnetic valve, a medium output pipe, a circulating pump II and a circulating pump III, and the four branch channels are all provided with electric plug-in gates along a cross-sectional direction;

[0010] The intelligent control assembly is arranged in a module integrated structure, and comprises a power distribution controller, a flow meter, a pressure analysis module, a vibration analysis module, an ash content meter, a sulfur content meter, a Y-ray density processing assembly, a processor and a liquid crystal touch screen arranged in the power distribution controller, and the processor internally stores a storage card containing multiple coal quality characteristic data information, so that the purpose of quickly adjusting the heavy medium density of separation and automatically switching the desliming and non-desliming separation processes is achieved.

[0011] The cavity is internally fixedly provided with a sieve plate I and a sieve plate II from top to bottom, the sieve plate I and the sieve plate II are arranged in a downward inclined structure from front to back, and the included angle with the ground is 30°, the sieve plate I is provided with strip-slit-shaped sieve holes which are arranged in a staggered manner and have a length of 15 mm and a width of 0.5 mm, the sieve plate II is provided with circular sieve holes which are arranged in a staggered manner and have a diameter of 0.3 mm, the flow guide groove is arranged at the bottom of the cavity, the magnetic separation roller is arranged at the upper end of the flow guide groove, the flow guide groove and the magnetic separation roller are both arranged in a downward inclined structure from front to back, and the included angle with the ground is 8°, the magnetic separation roller is rotationally connected with the output shaft of the driving motor through a gear, the non-magnetic discharge area of the magnetic separation roller is provided with a U-shaped scraper, the U-shaped scraper is used for scraping and guiding the magnetic material to the medium recovery groove at the lower end, the gas pipe is provided with a preset number of high-pressure nozzles, the gas pipe is arranged at the bottom of the sieve plate I and the sieve plate II respectively, the preset positions of the sieve plate I and the sieve plate II are both provided with vibration sensors, the liquid pipe is provided with a preset number of nozzles, the liquid pipe is arranged at the upper end of the sieve plate I, and the flow sensor and the pressure sensor are arranged at the preset positions in the cavity respectively;

[0012] The sieve plate I is provided with a feed inlet in a front-narrow-and-rear-wide trapezoidal structure at the front end, the feed inlet is provided with a preset number of flow dividing plates, the tail part of the cavity is provided with a medium discharge port, the rear end of the medium discharge port is communicated with the front end of the flow guide groove, the rear end of the flow guide groove is provided with an outlet I, the middle position of the rear end of the sieve plate I is provided with an outlet II, the middle position of the rear end of the sieve plate II is provided with an outlet III, and the support frame is fixed with the ground fixing member through bolts.

[0013] The outlet II and the outlet III of the clean coal screen are respectively connected with external dewatering equipment, the outlet II and the outlet III of the medium coal screen are respectively connected with external dewatering equipment, and the outlet II and the outlet III of the gangue screen are respectively connected with external dewatering equipment.

[0014] The front end of the main channel is fixedly provided with a U-shaped plate, the inclination angle of the U-shaped plate is consistent with the inclination angle of the main channel, the bottom surface of the U-shaped plate is provided with an ash content sensor, a sulfur content sensor, a Y-ray emitter and a Y-ray detector, the front end of the branch channel I and the front end of the branch channel II are connected with the rear end of the main channel, the main channel, the branch channel I and the branch channel II form a Y-shaped structure, the front end of the upper section of the branch channel III is connected with the inner side of the branch channel I, the front end of the upper section of the branch channel IV is connected with the inner side of the branch channel II, the branch channel III and the branch channel IV are provided in an upper and lower two-section corner structure, the bottom surfaces of the branch channel III and the branch channel IV are respectively provided with a plurality of drop plates, and the bottom surfaces of the drop plates are fixedly provided with vibrators.

[0015] One end of the water medium supply pipe, the heavy medium supply pipe and the medium output pipe is respectively connected with three interfaces of a three-way electromagnetic valve, the other end of the water medium supply pipe is provided with a circulating pump II between the water container, the other end of the heavy medium supply pipe is provided with a circulating pump III between the discharge port of the medium mixing barrel, the inner walls of the four branch channels are fixedly provided with spray pipes, the spray pipes are provided with a plurality of spray holes, the spray pipes are connected with the medium output pipe through a five-way electromagnetic valve, the top surface of the five-way branched chute is provided with a plurality of observation openings, the observation openings are flange-connected with detachable transparent cover plates, the inner sides of four surfaces in the five-way branched chute and the U-shaped plate are fixedly provided with ceramic lining plates, and the five-way branched chute is fixedly provided with a fixed support device at a preset position.

[0016] The three-stage magnetic separation assembly further includes a clean coal three-stage magnetic separation unit, a medium coal three-stage magnetic separation unit and a gangue three-stage magnetic separation unit.

[0017] The clean coal three-stage magnetic separation unit includes a magnetic separation flow guide integrated assembly of the clean coal screen, a magnetic separator I and a magnetic separator II, the lower port of the medium recovery groove of the clean coal screen is connected with the heavy medium recovery bin, the outlet I of the clean coal screen is connected with the feeding port of the magnetic separator I through a pipeline, the magnetic material discharge port of the magnetic separator I is connected with the heavy medium recovery bin, the non-magnetic material discharge port of the magnetic separator I is connected with the feeding port of the magnetic separator II through a pipeline, the magnetic material discharge port of the magnetic separator II is connected with the heavy medium recovery bin, and the non-magnetic material discharge port of the magnetic separator II is connected with the flotation equipment through a pipeline.

[0018] The medium coal three-stage magnetic separation unit comprises a magnetic flow guide integrated assembly of a medium coal screen, a magnetic separator III and a magnetic separator IV, the lower port of the medium coal screen medium recovery groove is connected with the heavy medium recovery bin, the outlet I of the medium coal screen is connected with the feeding port of the magnetic separator III through a pipeline, the magnetic material discharge port of the magnetic separator III is connected with the heavy medium recovery bin, the non-magnetic material discharge port of the magnetic separator III is connected with the feeding port of the magnetic separator IV through a pipeline, the magnetic material discharge port of the magnetic separator IV is connected with the heavy medium recovery bin, and the non-magnetic material discharge port of the magnetic separator IV is connected with the flotation device or the coal slurry water treatment device through a pipeline.

[0019] The gangue three-stage magnetic separation unit comprises a magnetic flow guide integrated assembly of a gangue screen, a magnetic separator V and a magnetic separator VI, the lower port of the gangue screen medium recovery groove is connected with the heavy medium recovery bin, the outlet I of the gangue screen is connected with the feeding port of the magnetic separator V through a pipeline, the magnetic material discharge port of the magnetic separator V is connected with the heavy medium recovery bin, the non-magnetic material discharge port of the magnetic separator V is connected with the feeding port of the magnetic separator VI through a pipeline, the magnetic material discharge port of the magnetic separator VI is connected with the heavy medium recovery bin, and the non-magnetic material discharge port of the magnetic separator VI is connected with the flotation device or the coal slurry water treatment device through a pipeline.

[0020] The desliming screen I and the desliming screen II are further included, the feeding port of the desliming screen I is arranged at the lower end of the lower port of the branch channel I, the feeding port of the desliming screen II is arranged at the lower end of the lower port of the branch channel II, the desliming screen I and the desliming screen II are both arranged as a circular screen hole with a diameter of 0.5 mm, and the undersize discharge ports of the desliming screen I and the desliming screen II are connected with the coal slurry water treatment device.

[0021] The medium cyclone is further included, the medium cyclone adopts a pressureless three-product heavy medium cyclone, the material inlet of the medium cyclone is provided with a feeding hopper, the lower port of the feeding hopper is connected with the material inlet of the medium cyclone, the size and shape of the lower port of the feeding hopper are matched with the size and shape of the material inlet of the medium cyclone, the clean coal outlet of the medium cyclone is connected with the feeding port of the clean coal screen through a pipeline, the medium coal outlet of the medium cyclone is connected with the feeding port of the medium coal screen through a pipeline, and the gangue outlet of the medium cyclone is connected with the feeding port of the gangue screen through a pipeline.

[0022] The medium cyclone is further included, the medium cyclone adopts a pressureless three-product heavy medium cyclone, the material inlet of the medium cyclone is provided with a feeding hopper, the lower port of the feeding hopper is connected with the material inlet of the medium cyclone, the size and shape of the lower port of the feeding hopper are matched with the size and shape of the material inlet of the medium cyclone, the clean coal outlet of the medium cyclone is connected with the feeding port of the clean coal screen through a pipeline, the medium coal outlet of the medium cyclone is connected with the feeding port of the medium coal screen through a pipeline, and the gangue outlet of the medium cyclone is connected with the feeding port of the gangue screen through a pipeline. The discharge port of the medium barrel is provided with a tee joint, the other two interfaces of the tee joint are connected with the heavy medium suspension inlet of the medium cyclone and the heavy medium supply pipe through pipelines, a circulating pump IV is arranged between the interface of the tee joint and the heavy medium suspension inlet of the medium cyclone, the dry powder inlet of the medium barrel is connected with the feeding port of the heavy medium recovery bin through a pipeline, a pneumatic conveying device is arranged between the dry powder inlet of the medium barrel and the feeding port of the heavy medium recovery bin, and the water supplement port of the medium barrel is connected with an external water supply device through a pipeline.

[0023] The Z-shaped inclined plate chute is arranged in a trapezoidal structure with the front being wide and the rear being narrow, and comprises a chute body, a feeding port, a discharging port, a side wall and an inclined baffle, the feeding port is arranged at the lower end of the discharging port of the screen oversize of the desliming screen I and the desliming screen II and the lower end of the branch channel III and the branch channel IV, the discharging port is connected with the upper end of the feeding hopper, the size of the discharging port is matched with the size of the upper end of the feeding hopper, and the chute body is internally provided with a preset number of the inclined baffles arranged in a Z-shaped staggered manner, and the height of the inclined baffles is equal to the height of the side wall.

[0024] The driving motor, the compressor, the circulating pump I, the plug gate, the three-way electromagnetic valve, the circulating pump II, the circulating pump III, the flow meter, the pressure analysis module, the vibration analysis module, the ash content instrument, the sulfur content instrument, the Y-ray density processing assembly, the processor, the liquid crystal touch screen, the Y-ray emitter, the vibrator, the five-way electromagnetic valve, the magnetic separators I, II, III, IV, V, VI, the medium cyclone, the medium mixing barrel and the circulating pump IV are connected with the power distribution controller through wires.

[0025] The vibration sensor, the flow sensor, the pressure sensor, the ash content sensor, the sulfur content sensor and the Y-ray detector are connected with the power distribution controller through wires.

[0026] The coal washing chute, the intelligent control assembly, the desliming screen I and the desliming screen II are arranged, and the coal washing chute can realize automatic control and real-time online switching of the desliming and non-desliming separation process according to the type of coal quality, compares the raw coal data with the multiple coal quality characteristic data information in the storage card directly, and effectively solves the problems that the coal washing chute cannot use the online switching of the desliming and non-desliming separation process, cannot automatically control and realize real-time online switching of the desliming and non-desliming separation process according to the type of coal quality, and cannot compare the raw coal data with the multiple coal quality characteristic data information in the storage card directly.

[0027] The coal washing chute, the intelligent control assembly, the desliming screen I and the desliming screen II are arranged, and the coal washing chute can realize automatic control and real-time online switching of the desliming and non-desliming separation process according to the type of coal quality, compares the raw coal data with the multiple coal quality characteristic data information in the storage card directly, and effectively solves the problems that the coal washing chute cannot use the online switching of the desliming and non-desliming separation process, cannot automatically control and realize real-time online switching of the desliming and non-desliming separation process according to the type of coal quality, and cannot compare the raw coal data with the multiple coal quality characteristic data information in the storage card directly.

[0028] The coal washing chute, the intelligent control assembly, the desliming screen I and the desliming screen II are arranged, and the coal washing chute can realize automatic control and real-time online switching of the desliming and non-desliming separation process according to the type of coal quality, compares the raw coal data with the multiple coal quality characteristic data information in the storage card directly, and effectively solves the problems that the coal washing chute cannot use the online switching of the desliming and non-desliming separation process, cannot automatically control and realize real-time online switching of the desliming and non-desliming separation process according to the type of coal quality, and cannot compare the raw coal data with the multiple coal quality characteristic data information in the storage card directly.

[0029] The utility model discloses set up three -stage magnetic separation assembly and with its corresponding heavy medium sorting screen and heavy medium recycling bin etc., can do three -stage demedium on the three demedium links of clean coal, medium coal and gangue after heavy medium sorting, recycle and utilize heavy medium to the maximum extent, effectively reduce the loss of heavy medium resource, effectively solved the problem of not using the combination design of three -stage magnetic separation assembly, cannot do three -stage demedium on the three demedium links of clean coal, medium coal and gangue after heavy medium sorting, recycle and utilize heavy medium to the maximum extent, cannot effectively reduce the heavy medium resource loss problem. BRIEF DESCRIPTION OF DRAWINGS

[0030] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is the structural schematic diagram of the utility model;

[0031] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the left -sight structure diagram of heavy medium sorting screen of the utility model;

[0032] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is the left -sight structure diagram of coal washing chute of the utility model.

[0033] LEGEND:

[0034] 1. heavy medium separation screen, 2. coal washing chute, 3. intelligent control assembly, 4. clean coal screen, 5. middlings screen, 6. gangue screen, 7. magnetic separation guide integration assembly, 8. cavity, 9. sieve plate I, 10. sieve plate II, 11. high pressure pulse cleaning assembly, 12. high pressure flushing assembly, 13. support frame, 14. guide groove, 15. magnetic separation roller, 16. drive motor, 17. gas pipe, 18. high pressure nozzle, 19. compressor, 20. vibration sensor, 21. liquid pipe, 22. nozzle, 23. circulating pump I, 24. flow sensor, 25. pressure sensor, 26. chute assembly, 27. medium switching assembly, 28. fixed support device, 29. five-way branched chute, 30. plug gate, 31. main channel, 32. branch channel I, 33. branch channel II, 34. branch channel III, 35. branch channel IV, 36. water medium supply pipe, 37. heavy medium supply pipe, 38. three-way electromagnetic valve, 39. medium output pipe, 40. circulating pump II, 41. circulating pump III, 42. power distribution controller, 43. flow meter, 44. pressure analysis module, 45. vibration analysis module, 46. ash content meter, 47. sulfur content meter, 48. Y-ray density processing assembly, 49. processor, 50. liquid crystal touch screen, 51. U-shaped scraper, 52. medium recovery tank, 53. flow distribution plate, 54. medium discharge port, 55. outlet I, 56. outlet II, 57. outlet III, 58. U-shaped plate, 59. ash content sensor, 60. sulfur content sensor, 61. Y-ray emitter, 62. Y-ray detector, 63. drop plate, 64. vibrator, 65. injection pipe, 66. injection hole, 67. five-way electromagnetic valve, 68. observation port, 69. transparent cover plate, 70. three-stage magnetic separation assembly, 71. clean coal three-stage magnetic separation unit, 72. middlings three-stage magnetic separation unit, 73. gangue three-stage magnetic separation unit, 74. magnetic separator I, 75. magnetic separator II, 76. heavy medium recovery bin, 77. magnetic separator III, 78. magnetic separator IV, 79. magnetic separator V, 80. magnetic separator VI, 81. desliming screen I, 82. desliming screen II, 83. medium cyclone, 84. feed hopper, 85. medium mixing bucket, 86. circulating pump IV, 87. Z-shaped inclined plate chute. DETAILED DESCRIPTION

[0035] In combination Figure 1 , Figure 2 , Figure 3 and examples are further described in detail so that the public can better grasp the implementation method of the utility model, and the specific implementation scheme of the utility model is as follows:

[0036] The heavy medium separation device with desliming and non-desliming structures, comprising a heavy medium separation screen 1, a coal washing chute 2 and an intelligent control assembly 3, characterized in that,

[0037] The heavy medium separation screen 1 is provided with clean coal screen 4, medium coal screen 5 and gangue screen 6, the heavy medium separation screen 1 includes magnetic separation flow guide integrated assembly 7, cavity 8, screen plate I 9, screen plate II 10, high pressure pulse cleaning assembly 11, high pressure flushing assembly 12 and support frame 13, the magnetic separation flow guide integrated assembly 7 includes flow guide groove 14, magnetic separation roller 15 and drive motor 16, the high pressure pulse cleaning assembly 11 includes gas pipe 17, high pressure nozzle 18, compressor 19 and vibration sensor 20, the high pressure flushing assembly 12 includes liquid pipe 21, nozzle 22, circulating pump I 23, flow sensor 24 and pressure sensor 25, the gas pipe 17 and liquid pipe 21 are all provided as a serpentine coil structure, the heavy medium separation screen 1 can automatically adjust the flushing intensity according to the real-time data detected by the flow sensor 24 and pressure sensor 25 in the cavity 8, control the high pressure flushing assembly 12 to flush the heavy medium adhered on the material, control the high pressure pulse cleaning assembly 11 to automatically clean the screen mesh according to the vibration sensor 20 detecting the abnormal vibration of the screen mesh, can quickly collect and recycle the magnetic heavy medium, reduce the load of subsequent medium removal equipment, effectively save the cost, and improve the overall coal washing efficiency;

[0038] The coal washing chute 2 includes chute assembly 26, medium switching assembly 27 and fixed support device 28, the chute assembly 26 includes five-way branched chute 29 and plug-in gate 30, the five-way branched chute 29 is provided as a downward inclined structure along the conveying direction, the five-way branched chute 29 includes main channel 31 and four branch channels, the four branch channels are branch channel I 32, branch channel II 33, branch channel III 34 and branch channel IV 35 respectively, the medium switching assembly 27 includes water medium supply pipe 36, heavy medium supply pipe 37, three-way electromagnetic valve 38, medium output pipe 39, circulating pump II 40 and circulating pump III 41, the four branch channels are all provided with electric plug-in gate 30 along the cross-sectional direction, the coal washing chute 2 can automatically control three-way electromagnetic valve 38, five-way electromagnetic valve 67, circulating pump II 40, circulating pump III 41 and medium mixing barrel 85 according to the type of coal quality, without stopping operation, online switching water medium or heavy medium in real time, automatically adjusting the appropriate density of heavy medium, automatically controlling plug-in gate 30 through processor 49, and automatically switching branch channels for raw coal desliming and non-desliming separation process;

[0039] The intelligent control assembly 3 is provided as a module integrated structure, the intelligent control assembly 3 includes power distribution controller 42 and flowmeter 43, pressure analysis module 44, vibration analysis module 45, ash content instrument 46, sulfur content instrument 47, Y-ray density processing assembly 48, processor 49 and liquid crystal touch screen 50 arranged inside the power distribution controller 42, the processor 49 internally stores a memory card containing multiple coal quality characteristic data information, achieving the purpose of quickly adjusting the separation heavy medium density online and automatically switching the desliming and non-desliming separation process.

[0040] The cavity 8 is internally fixedly provided with a sieve plate I 9 and a sieve plate II 10 from top to bottom, the sieve plate I 9 and the sieve plate II 10 are inclined downward from front to back, and the angle with the ground is 30°, the sieve plate I 9 is provided with strip-shaped sieve holes with a length of 15mm and a width of 0.5mm arranged in a staggered manner, the sieve plate II 10 is provided with circular sieve holes with a diameter of 0.3mm arranged in a staggered manner, the flow guide groove 14 is arranged at the bottom of the cavity 8, the magnetic separation roller 15 is arranged at the upper end of the flow guide groove 14, the flow guide groove 14 and the magnetic separation roller 15 are inclined downward from front to back, and the angle with the ground is 8°, the magnetic separation roller 15 is rotationally connected with the output shaft of the driving motor 16 through a gear, the non-magnetic discharge area of the magnetic separation roller 15 is provided with a U-shaped scraper 51, the U-shaped scraper 51 is used to scrape off the magnetic material and guide the magnetic material to the medium recovery groove 52 at the lower end, the gas pipe 17 is provided with a plurality of high-pressure nozzles 18, the gas pipe 17 is arranged at the bottom of the sieve plate I 9 and the sieve plate II 10 respectively, the preset positions of the sieve plate I 9 and the sieve plate II 10 are provided with vibration sensors 20, the liquid pipe 21 is provided with a plurality of nozzles 22, the liquid pipe 21 is arranged at the upper end of the sieve plate I 9, the flow sensor 24 and the pressure sensor 25 are arranged at the preset positions inside the cavity 8 respectively;

[0041] The front end of the sieve plate I 9 is provided with a feed inlet with a front narrow and rear wide trapezoidal structure, the feed inlet is provided with a plurality of shunt plates 53, the tail part of the cavity 8 is provided with a medium discharge port 54, the rear end of the medium discharge port 54 is connected with the front end of the flow guide groove 14, the rear end of the flow guide groove 14 is provided with an outlet I 55, the middle position of the rear end of the sieve plate I 9 is provided with an outlet II 56, the middle position of the rear end of the sieve plate II 10 is provided with an outlet III 57, the support frame 13 is fixed by bolts and ground fixing members;

[0042] The outlet II 56 and the outlet III 57 of the clean coal screen 4 are respectively connected with external dewatering equipment, the outlet II 56 and the outlet III 57 of the medium coal screen 5 are respectively connected with external dewatering equipment, and the outlet II 56 and the outlet III 57 of the gangue screen 6 are respectively connected with external dewatering equipment.

[0043] The front end of the main channel 31 is fixedly provided with a U-shaped plate 58, the inclination angle of the U-shaped plate 58 is consistent with the inclination angle of the main channel 31, the bottom surface of the U-shaped plate 58 is provided with an ash content sensor 59, a sulfur content sensor 60, a Y-ray emitter 61 and a Y-ray detector 62, the front end of the branch channel I 32 and the front end of the branch channel II 33 are communicated with the rear end of the main channel 31, the main channel 31, the branch channel I 32 and the branch channel II 33 form a Y-shaped structure, the front end of the upper segment of the branch channel III 34 is communicated with the inner side of the branch channel I 32, the front end of the upper segment of the branch channel IV 35 is communicated with the inner side of the branch channel II 33, the branch channel III 34 and the branch channel IV 35 are provided as two segments of corner structure, the bottom surface of the branch channel III 34 and the branch channel IV 35 is respectively provided with a plurality of drop plates 63, and the bottom surface of the drop plate 63 is fixedly provided with a vibrator 64.

[0044] One end of the water medium supply pipe 36, the heavy medium supply pipe 37 and the medium output pipe 39 is respectively communicated with three interfaces of the three-way electromagnetic valve 38, the other end of the water medium supply pipe 36 is provided with a circulating pump II 40 between the water container, the other end of the heavy medium supply pipe 37 is provided with a circulating pump III 41 between the discharge port of the medium mixing barrel 85, the inner wall of the four branch channels is fixedly provided with a spray pipe 65, the spray pipe 65 is provided with a plurality of spray holes 66, the spray pipe 65 is communicated with the medium output pipe 39 through a five-way electromagnetic valve 67, a plurality of observation openings 68 are formed in the top surface of the five-way branched chute 29, the observation openings 68 are flange-connected with detachable transparent cover plates 69, the inner four surfaces of the five-way branched chute 29 and the inner side surface of the U-shaped plate 58 are fixedly provided with ceramic lining plates, and the five-way branched chute 29 is fixedly provided with the fixed support device 28 at a predetermined position.

[0045] Further comprising a three-stage magnetic separation assembly 70, the three-stage magnetic separation assembly 70 comprises a clean coal three-stage magnetic separation unit 71, a medium coal three-stage magnetic separation unit 72 and a gangue three-stage magnetic separation unit 73.

[0046] The clean coal three-stage magnetic separation unit 71 comprises a magnetic separation flow guide integrated assembly 7 of the clean coal screen 4, a magnetic separator I 74 and a magnetic separator II 75, the lower port of the medium recovery groove 52 of the clean coal screen 4 is communicated with a heavy medium recovery bin 76, the outlet I 55 of the clean coal screen 4 is communicated with the feeding port of the magnetic separator I 74 through a pipeline, the magnetic material discharge port of the magnetic separator I 74 is communicated with the heavy medium recovery bin 76, the non-magnetic material discharge port of the magnetic separator I 74 is communicated with the feeding port of the magnetic separator II 75 through a pipeline, the magnetic material discharge port of the magnetic separator II 75 is communicated with the heavy medium recovery bin 76, and the non-magnetic material discharge port of the magnetic separator II 75 is communicated with a flotation device through a pipeline;

[0047] The medium coal three-stage magnetic separation unit 72 comprises a magnetic flow guide integrated assembly 7 of the medium coal screen 5, a magnetic separator III 77, and a magnetic separator IV 78. The lower port of the medium recovery groove 52 of the medium coal screen 5 is connected with the heavy medium recovery bin 76. The outlet I 55 of the medium coal screen 5 is connected with the feeding port of the magnetic separator III 77 through a pipeline. The magnetic material discharge port of the magnetic separator III 77 is connected with the heavy medium recovery bin 76. The non-magnetic material discharge port of the magnetic separator III 77 is connected with the feeding port of the magnetic separator IV 78 through a pipeline. The magnetic material discharge port of the magnetic separator IV 78 is connected with the heavy medium recovery bin 76. The non-magnetic material discharge port of the magnetic separator IV 78 is connected with the flotation device or the coal slurry water treatment device through a pipeline.

[0048] The gangue three-stage magnetic separation unit 73 comprises a magnetic flow guide integrated assembly 7 of the gangue screen 6, a magnetic separator V 79, and a magnetic separator VI 80. The lower port of the medium recovery groove 52 of the gangue screen 6 is connected with the heavy medium recovery bin 76. The outlet I 55 of the gangue screen 6 is connected with the feeding port of the magnetic separator V 79 through a pipeline. The magnetic material discharge port of the magnetic separator V 79 is connected with the heavy medium recovery bin 76. The non-magnetic material discharge port of the magnetic separator V 79 is connected with the feeding port of the magnetic separator VI 80 through a pipeline. The magnetic material discharge port of the magnetic separator VI 80 is connected with the heavy medium recovery bin 76. The non-magnetic material discharge port of the magnetic separator VI 80 is connected with the flotation device or the coal slurry water treatment device through a pipeline.

[0049] Further comprising a desliming screen I 81 and a desliming screen II 82. The feeding port of the desliming screen I 81 is arranged at the lower end of the lower port of the branch channel I 32. The feeding port of the desliming screen II 82 is arranged at the lower end of the lower port of the branch channel II 33. The desliming screen I 81 and the desliming screen II 82 are both arranged as a circular screen hole with a diameter of 0.5 mm. The underflow discharge ports of the desliming screen I 81 and the desliming screen II 82 are connected with the coal slurry water treatment device.

[0050] Further comprising a medium cyclone 83. The medium cyclone 83 adopts a pressureless three-product heavy medium cyclone. The material inlet of the medium cyclone 83 is provided with a feeding hopper 84. The lower port of the feeding hopper 84 is connected with the material inlet of the medium cyclone 83. The size and shape of the lower port of the feeding hopper 84 match the size and shape of the material inlet of the medium cyclone 83. The clean coal outlet of the medium cyclone 83 is connected with the feeding port of the clean coal screen 4 through a pipeline. The medium coal outlet of the medium cyclone 83 is connected with the feeding port of the medium coal screen 5 through a pipeline. The gangue outlet of the medium cyclone 83 is connected with the feeding port of the gangue screen 6 through a pipeline.

[0051] The combined medium bucket 85 is provided with a three-way pipe, and the other two interfaces of the three-way pipe are respectively connected with the heavy medium suspension inlet of the medium cyclone 83 and the heavy medium supply pipe 37 through pipes, and a circulating pump IV 86 is arranged between the interface of the three-way pipe and the heavy medium suspension inlet of the medium cyclone 83. The dry powder inlet of the combined medium bucket 85 is connected with the supply port of the heavy medium recovery bin 76 through a pipe, and a pneumatic conveying device is arranged between the dry powder inlet of the combined medium bucket 85 and the supply port of the heavy medium recovery bin 76. The water supplement port of the combined medium bucket 85 is connected with an external water supply device through a pipe.

[0052] The Z-shaped inclined plate chute 87 is arranged in a trapezoidal structure with a wide front and a narrow back, and comprises a chute body, a feed port, a discharge port, a side wall and an inclined baffle. The feed port is arranged at the lower end of the undersize discharge port of the desliming screen I 81 and the desliming screen II 82 and the lower end of the branch channel III 34 and the branch channel IV 35. The discharge port is connected with the upper port of the feeding hopper 84, and the size of the discharge port matches the size of the upper port of the feeding hopper 84. A predetermined number of Z-shaped staggered inclined baffles are arranged in the chute body, and the height of the inclined baffles is equal to the height of the side wall.

[0053] The driving motor 16, the compressor 19, the circulating pump I 23, the plug gate 30, the three-way electromagnetic valve 38, the circulating pump II 40, the circulating pump III 41, the flow meter 43, the pressure analysis module 44, the vibration analysis module 45, the ash content instrument 46, the sulfur content instrument 47, the Y-ray density processing assembly 48, the processor 49, the liquid crystal touch screen 50, the Y-ray emitter 61, the vibrator 64, the five-way electromagnetic valve 67, the magnetic separator I 74, the magnetic separator II 75, the magnetic separator III 77, the magnetic separator IV 78, the magnetic separator V 79, the magnetic separator VI 80, the medium cyclone 83, the combined medium bucket 85 and the circulating pump IV 86 are connected with the power distribution controller 42 through wires.

[0054] The vibration sensor 20, the flow sensor 24, the pressure sensor 25, the ash content sensor 59, the sulfur content sensor 60 and the Y-ray detector 62 are respectively connected with the power distribution controller 42 through wires. Specific embodiment one:

[0055] A coal mine uses the heavy medium separation device with desliming and non-desliming structure. In the factory building, each device is installed, connected and fixed according to the determined position and requirements. After checking that all devices are normal before use, the power distribution controller 42 is electrically connected, the liquid crystal touch screen 50 is turned on and constantly bright, and each electric device of the heavy medium separation device with desliming and non-desliming structure enters a standby state.

[0056] The raw coal is conveyed to the U-shaped plate 58 by the belt conveyor, the ash content sensor 59, the sulfur content sensor 60 and the Y-ray detector 62 receive the signal of the Y-ray emitter 61, each collects the data information of the ash content, the sulfur content and the density of the raw coal, and each transmits to the ash content meter 46, the sulfur content meter 47 and the Y-ray density processing assembly 48. The processed data is transmitted to the processor 49 and compared with the multiple coal quality characteristic data information stored in the processor 49. The separation heavy medium density can be quickly adjusted online and the desliming and non-desliming separation processes can be automatically switched;

[0057] After comparison, the coal quality of the raw coal belongs to the low-ash and low-sulfur type. The automatic non-desliming separation scheme is used. The processor 49 simultaneously sends a command to close the plug-in gate 30 of the branch channel I 32 and the branch channel II 33 and opens the plug-in gate 30 of the branch channel III 34 and the branch channel IV 35. Due to the downward inclination angle of the U-shaped plate 58 and the five-way branched chute 29, the raw coal sequentially flows downward through the U-shaped plate 58, the main channel 31, the branch channel III 34 and the branch channel IV 35;

[0058] At the same time, under the instruction of the processor 49, the circulating pump I 23 starts to extract the water medium from the water container. The three-way electromagnetic valve 38 closes the switch of the heavy medium supply pipe 37. The automatic switching is performed to the water medium supply pipe 36 and the medium output pipe 39 to form a passage. The five-way electromagnetic valve 67 closes the switch of the injection pipe 65 in the branch channel I 32 and the branch channel II 33. The automatic switching is performed to the medium output pipe 39 and the injection pipe 65 in the branch channel III 34 and the branch channel IV 35 to simultaneously form a passage. The water medium enters the injection pipe 65 in the branch channel III 34 and the branch channel IV 35 through the water medium supply pipe 36 and the medium output pipe 39. The water medium is sprayed from the injection hole 66 toward the raw coal to wet the raw coal. After a preset number of drop plates 63, the raw coal is slowed down, the impurities are separated and the raw coal is fully wetted. From then on, the raw coal separated from the impurities and fully wetted through the coal washing chute 2 flows out from the outlet of the branch channel III 34 and the branch channel IV 35 and enters the Z-shaped inclined plate chute 87;

[0059] The operator can set the self-cleaning interval time of the vibrator 64 through the liquid crystal touch screen 50 and can also immediately start the self-cleaning function. After being started, the vibrator 64 receives the instruction of the power distribution controller 42 to drive the drop plate 63 and the five-way branched chute 29 to vibrate. The adhered raw coal flow is shaken down to effectively prevent the occurrence of the blockage. The observation port 68 can observe the working condition of the five-way branched chute 29 in real time, whether there is blockage and the like. The detachable transparent cover plate 69 can maintain the five-way branched chute 29 and the internal equipment thereof;

[0060] The Z-shaped inclined plate chute 87 is provided with a preset number of Z-shaped staggered inclined baffles in the chute body, which effectively slows down the raw coal feeding speed, avoids the impact on the feeding hopper 84 and the medium cyclone 83, ensures the separation effect, and ensures the separation effect. The raw coal enters the medium cyclone 83 in sequence through the Z-shaped inclined plate chute 87 and the feeding hopper 84;

[0061] The medium cyclone 83 adopts a pressureless three-product dense medium cyclone. The raw coal enters the first-stage cylindrical medium cyclone 83 under the action of gravity. The dense medium suspension prepared in the previous step is continuously injected into the first-stage cylindrical medium cyclone 83 along the tangent direction by the qualified medium pump. Through the stirring of the first-stage medium cyclone 83, double cyclone layers are generated inside. The clean coal with low density is separated out of the first-stage cylindrical medium cyclone 83. The heavy product of the first stage enters the second-stage conical medium cyclone 83 by the residual pressure of the discharge, and the medium coal and gangue are obtained after high-density separation. The separated clean coal, medium coal and gangue are discharged from the respective outlets together with the dense medium suspension. The mixture of clean coal and dense medium suspension enters the clean coal screen 4, the mixture of medium coal and dense medium suspension enters the medium coal screen 5, and the mixture of gangue and dense medium suspension enters the gangue screen 6. The three mixtures are respectively subjected to medium removal treatment;

[0062] The mixture is conveyed to the feed inlet of the dense medium separation screen 1. The trapezoidal structure with a narrow front and a wide rear and the longitudinally symmetrical flow divider 53 evenly distribute the material on the entire screen panel I 9. In addition, the inclined design of the screen panel I 9 allows the material to slide down by its own gravity. In the process of sliding, the nozzles 22 of the high-pressure washing assembly 12 perform high-pressure water washing on the material, separating small particles of material from the material on the screen panel I 9. The mixture of material and water smaller than the width of the slit-shaped screen hole falls to the screen panel II 10 for secondary separation. The material on the screen panel I 9 slides down the flow guide plate inclined from both ends to the middle and flows out of the outlet II 56, obtaining large-particle clean coal. The material under the screen panel I 9 is subjected to secondary separation by the screen panel II 10. The material smaller than the diameter of the circular screen hole falls to the bottom of the cavity 8. The material on the screen panel II 10 slides down the flow guide plate inclined from both ends to the middle and flows out of the outlet III 57. The use of two layers of screen mesh realizes rapid and efficient separation of dense medium, improves the passing rate of dense medium, reduces the loss of dense medium, and respectively obtains large-particle and small-particle clean coal, medium coal and gangue for subsequent processing. The products are put into the market according to the demand;

[0063] In the sorting process, the setting is made through the liquid crystal touch screen 50. On the one hand, the intelligent control assembly 3 automatically obtains the pressure data in the cavity and the flow data of the material according to the flow sensor 24 and the pressure sensor 25, automatically controls the high-pressure water supply intensity of the circulating pump I 23, provides the nozzle 22 of the high-pressure flushing assembly 12 with flushing water, continuously high-pressure flushes the heavy medium particles adhered to the material, realizes the efficient separation of the heavy medium particles and the material, ensures the continuity of the work, and on the other hand, the intelligent control assembly 3 automatically analyzes whether the vibration of the screen is abnormal according to the screen surface detection data collected by the vibration sensor 20, judges whether the screen is blocked, automatically controls the compressor 19 to spray high-pressure gas to the high-pressure nozzle 18 of the high-pressure pulse cleaning assembly 11 towards the sieve plate I 9 and the sieve plate II 10, automatically cleans the screen blockage, ensures the efficiency of the work, and also can set the spraying time period through the liquid crystal touch screen 50 to automatically clean the screen regularly.

[0064] The magnetic heavy medium suspension falling to the bottom of the cavity 8 flows into the flow guide groove 14 through the medium discharge port 54. Due to the trapezoidal structure and the inclined design of the flow guide groove 14, the downward flow of the magnetic heavy medium suspension is accelerated. In addition to the integrated design of the magnetic separation roller 15 and the flow guide groove 14, the rotating magnetic separation roller 15 quickly absorbs the magnetic substances in the magnetic heavy medium suspension, rotates the magnetic substances into the non-magnetic discharge area, and the U-shaped scraper 51 scrapes the magnetic substances from the surface of the magnetic separation roller 15 and guides them to the medium recovery groove 52 through the U-shaped scraper 51, and then enters the heavy medium recovery bin 76 for recycling, thereby reducing the load of the subsequent medium removal equipment, effectively saving costs, improving the overall coal washing efficiency, and the heavy medium suspension after the first-stage medium removal enters the magnetic separator I 74 for the second-stage medium removal, the magnetic substances enter the heavy medium recovery bin 76 through the magnetic material discharge port of the magnetic separator I 74, the heavy medium suspension after the second-stage medium removal enters the magnetic separator II 75 for the third-stage medium removal, the magnetic substances enter the heavy medium recovery bin 76 through the magnetic material discharge port of the magnetic separator II 75, and the non-magnetic substances after the third-stage medium removal are discharged from the non-magnetic material discharge port of the magnetic separator II 75 to the flotation equipment or the coal slurry water equipment for further processing. The heavy medium collected by the three-stage magnetic separation assembly 70 enters the heavy medium recovery bin 76, and under the control of the intelligent control assembly 3, the expected heavy medium is punched into the medium mixing barrel 85 through the pneumatic conveying equipment for recycling, forming a closed loop. Specific embodiment two:

[0065] After comparison, the coal quality of the raw coal belongs to the type with high ash content and high sulfur content, it is determined to use the desliming separation scheme, the processor 49 simultaneously sends a command to close the plug-in gate 30 of the branch channel III 34 and the branch channel IV 35, and opens the plug-in gate 30 of the branch channel I 32 and the branch channel II 33, due to the downward inclination angle of the U-shaped plate 58 and the five-way branched chute 29, the raw coal sequentially slides downward through the U-shaped plate 58, the main channel 31, the branch channel I 32 and the branch channel II 33, the downward inclination angle of the branch channel I 32 and the branch channel II 33 is greater than the downward inclination angle of the branch channel III 34 and the branch channel IV 35, the purpose is to increase the sliding speed because the density of the heavy medium is greater than the density of the water medium;

[0066] Meanwhile, under the instruction of the processor 49, the suitable heavy medium suspension is automatically adjusted in the medium mixing barrel 85, the circulating pump III 41 is started to extract the heavy medium suspension from the medium mixing barrel 85, the three-way electromagnetic valve 38 closes the switch of the water medium supply pipe 36, and automatically switches to the heavy medium supply pipe 37 and the medium output pipe 39 to form a passage, the five-way electromagnetic valve 67 closes the switch of the injection pipe 65 in the branch channel III 34 and the branch channel IV 35, and automatically switches to the medium output pipe 39 to form a passage with the injection pipe 65 in the branch channel I 32 and the branch channel II 33 at the same time, the heavy medium suspension enters the injection pipe 65 in the branch channel I 32 and the branch channel II 33 through the heavy medium supply pipe 37 and the medium output pipe 39, and sprays the heavy medium suspension toward the raw coal from the injection hole 66 to wet the raw coal, from then on, the raw coal that has separated impurities and is fully wetted in the coal washing chute 2 flows out from the branch channel I 32 outlet into the desliming screen I 81, and flows out from the branch channel II 33 outlet into the desliming screen II 82, and is screened through the desliming screen I 81 and the desliming screen II 82, the undersize material enters the coal slurry treatment equipment for subsequent treatment, and the oversize material enters the medium cyclone 83 through the Z-shaped inclined plate chute 87 and the feed hopper 84 for separation, and the subsequent separation and medium removal steps are the same as described in the first embodiment;

[0067] The heavy medium suspension automatically adjusted by the same medium mixing barrel 85 in the five-way branched chute 29 and the medium cyclone 83 is used, so that the density of the heavy medium suspension mixed in the raw coal does not change in the whole cleaning and separation process, and the best cleaning and separation effect of the raw coal is ensured, and the coal washing quality is improved.

Claims

1. A heavy medium separation device with desliming and non-desliming structures, comprising a heavy medium separation screen (1), a coal washing chute (2), and an intelligent control component (3), characterized in that, The heavy medium separation screen (1) is equipped with a fine coal screen (4), a middlings screen (5) and a gangue screen (6). The heavy medium separation screen (1) includes a magnetic separation and flow guiding integrated component (7), a cavity (8), a screen plate I (9), a screen plate II (10), a high-pressure pulse cleaning component (11), a high-pressure flushing component (12) and a support frame (13). The magnetic separation and flow guiding integrated component (7) includes a flow guide groove (14), a magnetic separation roller (15) and a drive motor (16). The high-pressure pulse cleaning component (11) includes a gas pipe (17), a high-pressure nozzle (18), a compressor (19) and a vibration sensor (20). The high-pressure flushing component (12) includes a liquid pipe (21), a nozzle (22), a circulating pump I (23), a flow sensor (24) and a pressure sensor (25). The gas pipe (17) and the liquid pipe (21) are both configured as serpentine coil structures. The coal washing chute (2) includes a chute assembly (26), a medium switching assembly (27), and a fixed support device (28). The chute assembly (26) includes a five-way branch chute (29) and a gate valve (30). The five-way branch chute (29) is configured as a downward inclined structure along the conveying direction. The five-way branch chute (29) includes a main channel (31) and four branch channels. The four branch channels are branch channel I (32), branch channel II (33), branch channel III (34), and branch channel IV (35). The medium switching assembly (27) includes a water medium supply pipe (36), a heavy medium supply pipe (37), a three-way solenoid valve (38), a medium output pipe (39), a circulating pump II (40), and a circulating pump III (41). Each of the four branch channels is equipped with an electric gate valve (30) along the cross-sectional direction. The intelligent control component (3) is configured as a modular integrated structure. The intelligent control component (3) includes a power distribution controller (42) and a flow meter (43), a pressure analysis module (44), a vibration analysis module (45), an ash analyzer (46), a sulfur analyzer (47), a gamma-ray density processing component (48), a processor (49), and an LCD touch screen (50) installed inside the power distribution controller (42). The processor (49) has a memory card containing multi-coal quality characteristic data information, so as to achieve the purpose of quickly adjusting the density of the heavy medium for separation and automatically switching between desliming and non-desliming separation processes online.

2. The heavy medium separation device with desliming and non-desliming structures as described in claim 1, characterized in that, Inside the cavity (8), sieve plate I (9) and sieve plate II (10) are fixedly arranged from top to bottom. The sieve plate I (9) and sieve plate II (10) are inclined downward from front to back, with an angle of 30° with the ground. The sieve plate I (9) is provided with interleaved slotted sieve holes with a length of 15 mm and a width of 0.5 mm. The sieve plate II (10) is provided with interleaved circular sieve holes with a diameter of 0.3 mm. The guide groove (14) is located at the bottom of the cavity (8). The magnetic separation roller (15) is located at the upper end of the guide groove (14). The guide groove (14) and the magnetic separation roller (15) are both inclined downward from front to back, with an angle of 8° with the ground. The magnetic separation roller (15) is connected to the output shaft of the drive motor (16) through gears. Rotary connection, the non-magnetic unloading area of ​​the magnetic separation roller (15) is provided with a U-shaped scraper (51), the U-shaped scraper (51) is used to scrape off magnetic materials and guide the magnetic materials to the media recovery tank (52) at the lower end, the gas pipe (17) is provided with a preset number of high pressure nozzles (18), the gas pipe (17) is respectively provided at the bottom of the sieve plate I (9) and the sieve plate II (10), the sieve plate I (9) and the sieve plate II (10) are respectively provided with vibration sensors (20) at preset positions, the liquid pipe (21) is provided with a preset number of nozzles (22), the liquid pipe (21) is provided at the upper end of the sieve plate I (9), the flow sensor (24) and the pressure sensor (25) are respectively provided at preset positions inside the cavity (8); The front end of the sieve plate I (9) is provided with a trapezoidal inlet with a narrow front and wide rear structure. The inlet is provided with a preset number of diverting plates (53). The rear end of the cavity (8) is provided with a discharge port (54). The rear end of the discharge port (54) is connected to the front end of the guide channel (14). The rear end of the guide channel (14) is provided with an outlet I (55). The middle position of the rear end of the sieve plate I (9) is provided with an outlet II (56). The middle position of the rear end of the sieve plate II (10) is provided with an outlet III (57). The support frame (13) is fixed to the ground fixing parts by bolts. The outlets II (56) and III (57) of the refined coal screen (4) are connected to external dewatering equipment, the outlets II (56) and III (57) of the medium coal screen (5) are connected to external dewatering equipment, and the outlets II (56) and III (57) of the gangue screen (6) are connected to external dewatering equipment.

3. A heavy medium separation device with desliming and non-desliming structures as described in claim 1, characterized in that, A U-shaped plate (58) is fixedly installed at the front end of the main channel (31). The inclination angle of the U-shaped plate (58) is the same as that of the main channel (31). An ash sensor (59), a sulfur sensor (60), a gamma-ray emitter (61), and a gamma-ray detector (62) are installed on the bottom surface of the U-shaped plate (58). The front ends of the branch channel I (32) and the branch channel II (33) are connected to the rear end of the main channel (31). The main channel (31), branch channel I (32), and branch channel II (63) are connected to the rear end of the main channel (31). 33) Forming a Y-shaped structure, the front end of the upper section of the branch channel Ⅲ (34) is connected to the inner side of the branch channel Ⅰ (32), the front end of the upper section of the branch channel Ⅳ (35) is connected to the inner side of the branch channel Ⅱ (33), the branch channel Ⅲ (34) and the branch channel Ⅳ (35) are set as a corner structure with upper and lower sections, and the bottom surface of the branch channel Ⅲ (34) and the branch channel Ⅳ (35) are respectively provided with a preset number of drop plates (63), and the bottom surface of the drop plate (63) is fixedly provided with a vibrator (64). One end of the water medium supply pipe (36), the heavy medium supply pipe (37), and the medium output pipe (39) are respectively connected to the three ports of the three-way solenoid valve (38). A circulation pump II (40) is installed between the other end of the water medium supply pipe (36) and the water container. A circulation pump III (41) is installed between the other end of the heavy medium supply pipe (37) and the discharge port of the mixing tank (85). A spray pipe (65) is fixedly installed on the inner wall of each of the four branch channels. The spray pipe (65) has a preset number of openings. The injection pipe (65) is connected to the medium output pipe (39) through a five-way solenoid valve (67). The top surface of the five-way branch chute (29) is provided with a preset number of observation ports (68). The observation ports (68) are flanged and connected to a detachable transparent cover plate (69). The four sides inside the five-way branch chute (29) and the inner side of the U-shaped plate (58) are all fixedly provided with ceramic liners. The five-way branch chute (29) is fixedly provided with a fixed support device (28) at a preset position.

4. A heavy medium separation device with desliming and non-desliming structures as described in claim 1, characterized in that, It also includes a three-stage magnetic separation assembly (70), which includes a three-stage magnetic separation unit (71) for clean coal, a three-stage magnetic separation unit (72) for middlings coal, and a three-stage magnetic separation unit (73) for gangue. The three-stage magnetic separation unit (71) for clean coal includes an integrated magnetic separation guide component (7) for a clean coal screen (4), magnetic separator I (74) and magnetic separator II (75). The lower port of the medium recovery tank (52) of the clean coal screen (4) is connected to the heavy medium recovery chamber (76). The outlet I (55) of the clean coal screen (4) is connected to the feed port of magnetic separator I (74) through a pipe. The magnetic discharge port of magnetic separator I (74) is connected to the heavy medium recovery chamber (76). The non-magnetic discharge port of magnetic separator I (74) is connected to the feed port of magnetic separator II (75) through a pipe. The magnetic discharge port of magnetic separator II (75) is connected to the heavy medium recovery chamber (76). The non-magnetic discharge port of magnetic separator II (75) is connected to the flotation equipment through a pipe. The three-stage magnetic separation unit (72) for medium coal includes an integrated magnetic separation and flow guiding component (7) of the medium coal screen (5), magnetic separator III (77) and magnetic separator IV (78). The lower port of the medium recovery tank (52) of the medium coal screen (5) is connected to the heavy medium recovery chamber (76). The outlet I (55) of the medium coal screen (5) is connected to the feed port of the magnetic separator III (77) through a pipe. The magnetic discharge port of the magnetic separator III (77) is connected to the heavy medium recovery chamber (76). The non-magnetic discharge port of the magnetic separator III (77) is connected to the feed port of the magnetic separator IV (78) through a pipe. The magnetic discharge port of the magnetic separator IV (78) is connected to the heavy medium recovery chamber (76). The non-magnetic discharge port of the magnetic separator IV (78) is connected to the flotation equipment or coal slurry water equipment through a pipe. The gangue three-stage magnetic separation unit (73) includes a gangue screen (6) magnetic separation guide integrated component (7), magnetic separator V (79) and magnetic separator VI (80). The lower port of the medium recovery tank (52) of the gangue screen (6) is connected to the heavy medium recovery bin (76). The outlet I (55) of the gangue screen (6) is connected to the feed port of the magnetic separator V (79) through a pipe. The magnetic discharge port of the magnetic separator V (79) is connected to the heavy medium recovery bin (76). The non-magnetic discharge port of the magnetic separator V (79) is connected to the feed port of the magnetic separator VI (80) through a pipe. The magnetic discharge port of the magnetic separator VI (80) is connected to the heavy medium recovery bin (76). The non-magnetic discharge port of the magnetic separator VI (80) is connected to the flotation equipment or coal slurry water equipment through a pipe.

5. A heavy medium separation device with desliming and non-desliming structures as described in claim 1, characterized in that, It also includes a desliming screen I (81) and a desliming screen II (82). The feed inlet of the desliming screen I (81) is located at the lower end of the lower port of the branch channel I (32), and the feed inlet of the desliming screen II (82) is located at the lower end of the lower port of the branch channel II (33). Both the desliming screen I (81) and the desliming screen II (82) are set with circular screen holes with a diameter of 0.5 mm. The discharge ports of the undersize material of the desliming screen I (81) and the desliming screen II (82) are connected to the coal slurry water treatment equipment.

6. A heavy medium separation device with desliming and non-desliming structures as described in claim 1, characterized in that, It also includes a medium cyclone separator (83), which is a pressureless three-product heavy medium cyclone separator (83). The material inlet of the medium cyclone separator (83) is provided with a feed funnel (84). The lower port of the feed funnel (84) is connected to the material inlet of the medium cyclone separator (83). The size and shape of the lower port of the feed funnel (84) match the size and shape of the material inlet of the medium cyclone separator (83). The clean coal outlet of the medium cyclone separator (83) is connected to the feed inlet of the clean coal screen (4) through a pipe. The middlings outlet of the medium cyclone separator (83) is connected to the feed inlet of the middlings screen (5) through a pipe. The gangue outlet of the medium cyclone separator (83) is connected to the feed inlet of the gangue screen (6) through a pipe.

7. A heavy medium separation device with desliming and non-desliming structures as described in claim 1, characterized in that, It also includes a media mixing tank (85), the outlet of which is provided with a tee, the other two ports of which are respectively connected to the heavy medium suspension inlet and the heavy medium supply pipe (37) of the media hydrocyclone (83) through pipes, a circulation pump IV (86) is provided between the port of the tee and the heavy medium suspension inlet of the media hydrocyclone (83), the dry powder inlet of the media mixing tank (85) is connected to the supply port of the heavy medium recovery chamber (76) through a pipe, a pneumatic conveying device is provided between the dry powder inlet of the media mixing tank (85) and the supply port of the heavy medium recovery chamber (76), and the water inlet of the media mixing tank (85) is connected to an external water supply device through a pipe.

8. A heavy medium separation device with desliming and non-desliming structures as described in claim 2, characterized in that, It also includes a Z-shaped inclined plate chute (87), which is a trapezoidal structure that is wider at the front and narrower at the back. The Z-shaped inclined plate chute (87) includes a trough body, a feed inlet, a discharge outlet, a side wall, and inclined baffles. The feed inlet is located at the lower end of the discharge outlet of the oversize material of the desliming screen I (81) and the desliming screen II (82) and the lower end of the branch channel III (34) and the branch channel IV (35). The discharge outlet is connected to the upper end of the feed funnel (84). The size of the discharge outlet matches the size of the upper end of the feed funnel (84). The trough body is provided with a preset number of inclined baffles arranged in a Z-shape. The height of the inclined baffles is equal to the height of the side wall.

9. A heavy medium separation device with desliming and non-desliming structures as described in claim 8, characterized in that, The drive motor (16), compressor (19), circulating pump I (23), gate valve (30), three-way solenoid valve (38), circulating pump II (40), circulating pump III (41), flow meter (43), pressure analysis module (44), vibration analysis module (45), ash analyzer (46), sulfur analyzer (47), gamma-ray density processing component (48), processor (49), LCD touch screen (50), gamma-ray emitter (61), vibrator (64), five-way solenoid valve (67), magnetic separator I (74), magnetic separator II (75), magnetic separator III (77), magnetic separator IV (78), magnetic separator V (79), magnetic separator VI (80), media cyclone separator (83), media mixing tank (85) and circulating pump IV (86) are connected to the power distribution controller (42) by wires; Vibration sensor (20), flow sensor (24), pressure sensor (25), ash sensor (59), sulfur sensor (60), and gamma ray detector (62) are connected to power distribution controller (42) via wires.

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