A rough particle ore sorting outer magnetic cylinder type magnetic separator

Abstract

The application is suitable for the field of outer magnetic cylinder type magnetic separators, and provides an outer magnetic cylinder type magnetic separator for coarse particle ore separation, which comprises an outer shell and further comprises: a feeding groove, wherein a roller pressing mechanism is arranged, and an air pressure mechanism is arranged in the roller pressing mechanism, and the air pressure mechanism can absorb dust generated during roller pressing; an arc-shaped guide groove is arranged in the outer shell, the arc-shaped guide groove is arranged on one side of a magnetic selection cylinder body, and the arc-shaped guide groove is provided with a pushing mechanism; the pushing mechanism is communicated with a water washing mechanism, and the water washing mechanism can wash and remove impurities from crushed ore. The outer magnetic cylinder type magnetic separator for coarse particle ore separation can effectively increase the crushing effect on coarse particle ore, improve the magnetic selection efficiency and precision, and avoid device blockage while the second roller rotates around the fixed rod and reciprocates along the length direction of the fixed rod.

Description

Technical Field

[0001] This invention belongs to the field of external magnetic drum separators, and particularly relates to an external magnetic drum separator for separating coarse-grained ores. Background Technology

[0002] The external magnetic drum separator is a new type of magnetic separation equipment. Its main features are: the slurry is fed along the axial direction inside the separation cylinder, and the magnetic minerals are discharged from the top of the cylinder as the cylinder rotates. It can effectively recover magnetic particles in the slurry, with a high metal recovery rate and broad market application prospects.

[0003] In existing technologies, grinding coarse ore particles reduces their volume and improves magnetic separation accuracy and efficiency. However, grinding the ore has limited efficiency and easily generates dust. After grinding, the ore tends to accumulate and clog in the equipment, further reducing magnetic separation efficiency.

[0004] To avoid the aforementioned technical problems, it is indeed necessary to provide an external magnetic drum separator for coarse-grained ore separation to overcome the deficiencies in the prior art. Summary of the Invention

[0005] The purpose of this invention is to provide an external magnetic drum separator for the separation of coarse-grained ores, which aims to solve the problem that existing equipment is prone to clogging and further reducing magnetic separation efficiency after grinding.

[0006] This invention is implemented as follows: a coarse-grained ore separation machine using an external magnetic drum type includes a shell, a support frame fixedly connected to the shell, a magnetic separation drum body rotatably connected to the support frame, a drive motor connected to the magnetic separation drum body, a discharge rod provided on one side of the magnetic separation drum body, a concentrate trough provided on one side of the discharge rod, and further includes:

[0007] The feed trough is connected to the outer shell. A roller pressing mechanism is provided in the feed trough. The roller pressing mechanism can crush coarse ore particles. A pneumatic mechanism is provided in the roller pressing mechanism. The pneumatic mechanism can absorb the dust generated during roller pressing.

[0008] The outer shell is provided with an arc-shaped material guide trough, which is located on one side of the magnetic separator cylinder. The arc-shaped material guide trough is provided with a pushing mechanism, which can push the crushed ore horizontally along the length of the magnetic separator cylinder. The pushing mechanism is connected to a water washing mechanism, which can wash the crushed ore to remove impurities.

[0009] The arc-shaped feed chute is connected to an opening and closing mechanism, which can open and close intermittently under the drive of the pushing mechanism. The opening and closing mechanism is connected to a water tank, which is connected to a washing mechanism. The washing mechanism is equipped with a filter assembly, which can filter and collect tailings.

[0010] A further technical solution is that the rolling mechanism includes a first rotating motor, a first roller, a gear transmission pair, a fixed rod, a sliding sleeve, a second roller, and a transmission assembly;

[0011] The feeding trough is provided with a guide trough. The first roller is rotatably connected to the inner wall of the feeding trough. The first rotating motor is fixedly connected to the central shaft of the first roller. The fixed rod is fixedly connected to the inner wall of the feeding trough. The second roller is slidably connected along the length of the sliding sleeve. The sliding sleeve is rotatably connected to the fixed rod. The gear transmission pair is set between the sliding sleeve and the central shaft of the first roller. The transmission assembly is used to drive the second roller to slide back and forth along the fixed rod.

[0012] In a further technical solution, the transmission assembly includes a gear disk, a bevel gear, a push rod, and a guide groove;

[0013] The gear disk is fixedly connected to the fixed rod, the bevel gear is rotatably connected to the sliding sleeve, and the bevel gear meshes with the gear disk. An insert rod is fixedly connected to the eccentric position of the bevel gear. A guide groove is provided in the inner wall of the second roller, and the insert rod is inserted into the guide groove.

[0014] In a further technical solution, the pneumatic mechanism includes an air intake port, a one-way air intake valve, a one-way air outlet valve, an air outlet, and a piston plate;

[0015] The second roller is provided with multiple air intake holes along its end face. Each air intake hole is connected to a one-way air intake valve. The piston plate is fixedly connected to the fixing rod, and the piston plate is sealed against the inner wall of the second roller.

[0016] The fixing rod is provided with an air outlet and is connected to a one-way air outlet valve. The fixing rod is covered with a rubber sleeve, which is engaged with the end face of the second roller. The fixing rod is connected to the arc-shaped guide trough through a pipe.

[0017] In a further technical solution, the pushing mechanism includes a second rotating motor, a rotating shaft, and blades;

[0018] The second rotating motor is fixedly connected to the side wall of the arc-shaped guide trough, and the rotating shaft is fixedly connected to the output shaft of the second rotating motor. The rotating shaft is spirally equipped with blades, which are disposed in the arc-shaped guide trough.

[0019] A further technical solution is that the water washing mechanism includes a water pump, a conduit, and a spray nozzle;

[0020] The water pump is fixedly connected to the side wall of the housing. One end of the conduit is fixedly connected to the water outlet of the water pump. The other end of the conduit is rotatably connected to one end of the rotating shaft. The rotating shaft is provided with multiple spray holes along its length, and the water pump's pumping end is connected to the water tank.

[0021] In a further technical solution, the opening and closing mechanism includes a mechanism box, a baffle, a guide seat, a sliding seat, a spring, and a thrust assembly;

[0022] The mechanism box is connected to the arc-shaped guide trough, and the mechanism box is rotatably connected to a baffle, which can be sealed to the side wall of the arc-shaped guide trough.

[0023] A sliding seat is slidably connected in the mechanism box, and a guide seat is fixedly connected to the baffle. The inclined surfaces of the guide seat and the sliding seat abut against each other. The spring is connected between the sliding seat and the inner end face of the mechanism box. The thrust assembly can drive the sliding seat to slide in the mechanism box. The mechanism box is connected to the water tank.

[0024] In a further technical solution, the thrust assembly includes a connecting rod, a stop rod, and a pusher seat;

[0025] One end of the connecting rod is fixedly connected to the sliding seat, and the other end of the connecting rod is fixedly connected to the stop rod. The push seat is fixedly connected to the rotating shaft, and the push seat abuts against the stop rod. The push seat can push the baffle to move horizontally.

[0026] A further technical solution includes a filter assembly comprising a filter screen and an elastic torsion spring. A tailings trough is provided in the water tank. The filter screen is rotatably connected to the inner end face of the water tank via the elastic torsion spring. The tailings trough is located on one side of the filter screen.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. The present invention provides an external magnetic drum type magnetic separator for coarse particle ore separation. The first roller and the second roller work together to crush the coarse particle ore. While the second roller rotates around the fixed rod, the second roller moves back and forth along the length of the fixed rod, thereby applying crossbar extrusion force while pressing the coarse particle ore, effectively increasing the crushing effect of the coarse particle ore, thereby improving the magnetic separation efficiency and magnetic separation accuracy, and avoiding device blockage.

[0029] 2. The coarse particle ore separation external magnetic drum type magnetic separator provided by the present invention effectively absorbs the dust during the crushing of coarse particle ore through a pneumatic mechanism, thereby avoiding environmental pollution;

[0030] 3. The present invention provides a coarse particle ore separation method using an external magnetic drum type magnetic separator. The second rotating motor drives the rotating shaft to rotate, and the rotating shaft drives the blades to rotate. The blades push the ore at a uniform speed, and the separation of the blades can effectively prevent the ore from clogging during the conveying process, thus affecting the magnetic separation efficiency.

[0031] 4. The present invention provides a coarse particle ore separation method using an external magnetic drum type magnetic separator. The water pump in the water tank is pumped to the rotating shaft through a conduit, and then the ore is washed and impurities are removed through the spray nozzles. As the rotating shaft rotates, the washing range of the spray nozzles can be increased, and the side wall of the arc-shaped guide trough can be effectively washed.

[0032] 5. The coarse-particle ore separation external magnetic drum type magnetic separator provided by the present invention allows water to be discharged intermittently from the arc-shaped guide trough as the baffle opens and closes intermittently, which can prevent impurities from settling at the bottom of the arc-shaped guide trough. At the same time, the water flow in the arc-shaped guide trough carries impurities and intermittently impacts the filter screen plate. Driven by the elastic torsion spring, the filter screen plate swings back and forth, thereby filtering the impurities and discharging them into the tailings trough in a timely manner, avoiding blockage and affecting the magnetic separation efficiency. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention;

[0034] Figure 2 for Figure 1 A sectional view;

[0035] Figure 3 for Figure 2 Top view of the feed chute;

[0036] Figure 4 This is a cross-sectional view of roller number two;

[0037] Figure 5 for Figure 2 Enlarged structural diagram of region A in the middle;

[0038] Figure 6 This is a schematic diagram of the roller pressing mechanism;

[0039] Figure 7 This is a cross-sectional view of the water tank.

[0040] In the attached diagram: 1. Outer shell; 2. Support frame; 3. Drive motor; 4. Roller pressing mechanism; 41. First rotating motor; 42. First roller; 43. Gear transmission pair; 44. Fixed rod; 45. Sliding sleeve; 46. Second roller; 47. Transmission assembly; 471. Gear disk; 472. Bevel gear; 473. Insert rod; 474. Guide groove;

[0041] 5. Pneumatic mechanism; 51. Suction port; 52. One-way inlet valve; 53. One-way outlet valve; 54. Outlet port; 55. Piston plate; 6. Pushing mechanism; 61. Second rotating motor; 62. Rotating shaft; 63. Blade; 7. Washing mechanism; 71. Water pump; 72. Conduit; 73. Spray nozzle; 8. Opening and closing mechanism; 81. Mechanism box; 82. Baffle; 83. Guide seat; 84. Sliding seat; 85. Spring; 86. Thrust assembly; 861. Connecting rod; 862. Stop rod; 863. Push seat; 9. Filter assembly; 91. Filter screen; 92. Elastic torsion spring; 10. Unloading rod; 11. Concentrate trough; 12. Feed trough; 13. Arc-shaped guide trough; 14. Water tank; 15. Guide trough; 16. Rubber sleeve; 17. Tailings trough; 18. Magnetic separator cylinder. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0043] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0044] like Figures 1-6 As shown, an external magnetic drum separator for coarse-grained ore separation provided by the present invention includes a shell 1, a support frame 2 fixedly connected to the shell 1, a magnetic separation drum 18 rotatably connected to the support frame 2, a drive motor 3 connected to the magnetic separation drum 18, a discharge rod 10 provided on one side of the magnetic separation drum 18, and a concentrate trough 11 provided on one side of the discharge rod 10. The separator also includes:

[0045] The feed trough 12 is connected to the outer shell 1. A roller pressing mechanism 4 is provided in the feed trough 12. The roller pressing mechanism 4 can crush coarse ore particles. A pneumatic mechanism 5 is provided in the roller pressing mechanism 4. The pneumatic mechanism 5 can absorb the dust generated during roller pressing.

[0046] An arc-shaped material guide trough 13 is provided in the outer shell 1. The arc-shaped material guide trough 13 is located on one side of the magnetic separation cylinder 18, and the arc-shaped material guide trough 13 is provided with a pushing mechanism 6. The pushing mechanism 6 can horizontally push the crushed ore along the length direction of the magnetic separation cylinder 18. The pushing mechanism 6 is connected to a water washing mechanism 7, which can wash and remove impurities from the crushed ore.

[0047] The arc-shaped feed trough 13 is connected to an opening and closing mechanism 8. Driven by the pushing mechanism 6, the opening and closing mechanism 8 can open and close intermittently. The opening and closing mechanism 8 is connected to a water tank 14, which is connected to a washing mechanism 7. The washing mechanism 7 is equipped with a filter assembly 9, which can filter and collect tailings.

[0048] When in use, coarse ore particles are fed into the feed trough 12. The roller pressing mechanism 4 can crush the coarse ore particles, thereby improving the magnetic separation efficiency and magnetic separation accuracy and avoiding device blockage.

[0049] The roller pressing mechanism 4 is equipped with a pneumatic mechanism 5, which can absorb the dust generated during roller pressing and avoid environmental pollution; then the pushing mechanism 6 can push the crushed ore horizontally along the length of the magnetic separation cylinder 18, and the washing mechanism 7 can wash the crushed ore to remove impurities.

[0050] At this time, the drive motor 3 drives the magnetic separation cylinder 18 to rotate, thereby performing magnetic separation on the mineral particles in the arc-shaped feed trough 13. The concentrate is adsorbed onto the magnetic separation cylinder 18 and enters the concentrate trough 11 under the interception of the unloading rod 10.

[0051] Driven by the pushing mechanism 6, the opening and closing mechanism 8 can open and close intermittently, thereby allowing the water in the arc-shaped guide trough 13 to be discharged intermittently. By opening and closing the opening and closing mechanism 8 intermittently, the water can be discharged multiple times, which can prevent the sedimentation of impurities at the bottom of the arc-shaped guide trough 13.

[0052] The washing mechanism 7 is equipped with a filter assembly 9, which can filter and collect tailings.

[0053] In this embodiment of the invention, as a preferred embodiment of the invention, the roller pressing mechanism 4 includes a first rotating motor 41, a first roller 42, a gear transmission pair 43, a fixed rod 44, a sliding sleeve 45, a second roller 46, and a transmission assembly 47.

[0054] The feeding trough 12 is provided with a guide trough 15. The first roller 42 is rotatably connected to the inner wall of the feeding trough 12. The first rotating motor 41 is fixedly connected to the central shaft of the first roller 42. The fixed rod 44 is fixedly connected to the inner wall of the feeding trough 12. The second roller 46 is slidably connected along the length direction of the sliding sleeve 45. The sliding sleeve 45 is rotatably connected to the fixed rod 44. The gear transmission pair 43 is arranged between the sliding sleeve 45 and the central shaft of the first roller 42. The transmission assembly 47 is used to drive the second roller 46 to slide back and forth along the fixed rod 44.

[0055] In the roller pressing mechanism 4, the first rotating motor 41 is started, the first rotating electrode 41 drives the first roller 42 to rotate, the first roller 42 drives the sliding sleeve 45 to rotate through the gear transmission pair 43, the sliding sleeve 45 drives the second roller 46 to rotate, and the first roller 42 and the second roller 46 together crush and grind the coarse ore.

[0056] In this embodiment of the invention, as a preferred embodiment, the transmission assembly 47 includes a gear disk 471, a bevel gear 472, a plug rod 473, and a guide groove 474.

[0057] The gear disk 471 is fixedly connected to the fixed rod 44, the bevel gear 472 is rotatably connected to the sliding sleeve 45, and the bevel gear 472 meshes with the gear disk 471. The eccentric position of the bevel gear 472 is fixedly connected to the insertion rod 473. The inner wall of the second roller 46 is provided with a guide groove 474, and the insertion rod 473 is inserted into the guide groove 474.

[0058] In the transmission assembly 47, when the second roller 46 rotates, the sliding sleeve 45 drives the bevel gear 472 to move around the fixed rod 44 in a circular motion. The bevel gear 472 meshes with the gear disk 471. Driven by the gear disk 471, the bevel gear 472 rotates itself. The bevel gear 472 drives the insert rod 473 to move in the guide groove 474. The insert rod 473 pushes the second roller 46 to slide along the sliding sleeve 45. While the second roller 46 rotates around the fixed rod 44, it also moves back and forth along the length of the fixed rod 44. This applies crossbar extrusion force while compressing the coarse ore particles, effectively increasing the crushing effect of the coarse ore particles.

[0059] In this embodiment of the invention, as a preferred embodiment of the invention, the pneumatic mechanism 5 includes an air intake port 51, a one-way air intake valve 52, a one-way air outlet valve 53, an air outlet port 54, and a piston plate 55.

[0060] The second roller 46 is provided with a plurality of air intake holes 51 along its end face. Each air intake hole 51 is connected to a one-way air intake valve 52. The piston plate 55 is fixedly connected to the fixing rod 44, and the piston plate 55 is sealed against the inner wall of the second roller 46.

[0061] The fixing rod 44 is provided with an air outlet 54 and is connected to a one-way air outlet valve 53. A rubber sleeve 16 is fitted on the outside of the fixing rod 44. The rubber sleeve 16 is engaged with the end face of the second roller 46. The fixing rod 44 is connected to the arc-shaped guide groove 13 through a pipe.

[0062] For example, 3- Figure 4In the pneumatic mechanism 5, when the second roller 46 moves downward relative to the piston plate 55, the air pressure in the cavity below the piston plate 55 decreases, the one-way air inlet valve 52 is opened, and the external dust enters the cavity below the piston plate 55 through the suction hole 51. Then, the second roller 46 moves upward relative to the piston plate 55, the one-way air outlet valve 53 is opened, and the dust in the cavity below the piston plate 55 is discharged through the air outlet 54. The dust enters the water flow in the arc-shaped guide trough 13 through the pipe. Through the pneumatic mechanism 5, the dust during the crushing of coarse ore particles is effectively absorbed.

[0063] In this embodiment of the invention, as a preferred embodiment, the pushing mechanism 6 includes a second rotating motor 61, a rotating shaft 62, and a blade 63;

[0064] The second rotating motor 6 is fixedly connected to the side wall of the arc-shaped guide trough 13, the rotating shaft 62 is fixedly connected to the output shaft of the second rotating motor 61, and the rotating shaft 62 is spirally provided with blades 63, which are disposed in the arc-shaped guide trough 13.

[0065] In the pushing mechanism 6, the second rotating motor 61 is started, which drives the rotating shaft 62 to rotate. The rotating shaft 62 drives the blades 63 to rotate. The blades 63 push the ore at a uniform speed. At the same time, the separation of the blades 63 can effectively prevent the ore from getting blocked during the conveying process, which would affect the magnetic separation efficiency.

[0066] In this embodiment of the invention, as a preferred embodiment, the water washing mechanism 7 includes a water pump 71, a conduit 72, and a spray nozzle 73;

[0067] The water pump 71 is fixedly connected to the side wall of the outer casing 1. One end of the conduit 72 is fixedly connected to the water outlet of the water pump 71. The other end of the conduit 72 is rotatably connected to one end of the rotating shaft 62. The rotating shaft 62 is provided with a plurality of spray holes 73 along its length. The water pump 7's pumping end is connected to the water tank 14.

[0068] In the water washing mechanism 7, the water pump 71 pumps water from the water tank 14 to the rotating shaft 62 through the conduit 72, and then washes and removes impurities from the ore through the spray nozzle 73. As the rotating shaft 62 rotates, the washing range of the spray nozzle 73 can be increased, and the side wall of the arc-shaped guide trough 13 can be effectively washed.

[0069] In this embodiment of the invention, as a preferred embodiment, the opening and closing mechanism 8 includes a mechanism box 81, a baffle 82, a guide seat 83, a sliding seat 84, a spring 85, and a thrust assembly 86.

[0070] The mechanism box 81 is connected to the arc-shaped guide trough 13. The mechanism box 81 is rotatably connected to a baffle 82, which can be sealed to the side wall of the arc-shaped guide trough 13.

[0071] A sliding seat 84 is slidably connected in the mechanism box 81, a guide seat 83 is fixedly connected to the baffle 82, the guide seat 83 and the inclined surface of the sliding seat 84 abut against each other, the spring 85 is connected between the sliding seat 84 and the inner end face of the mechanism box 81, the thrust assembly 86 can drive the sliding seat 84 to slide in the mechanism box 81, and the mechanism box 81 is connected to the water tank 14;

[0072] In the opening and closing mechanism 8, the thrust assembly 86 can drive the sliding seat 84 to slide in the mechanism box 81. The sliding seat 84 releases the limit on the guide seat 83, the spring 85 contracts, and the baffle 82 releases the seal on the arc-shaped guide channel 13, so that the water in the arc-shaped guide channel 13 carries impurities into the mechanism box 81, and then flows into the water tank 14. Then, under the action of the spring 85, the baffle 82 re-seals the arc-shaped guide channel 13.

[0073] In this embodiment of the invention, as a preferred embodiment, the thrust assembly 86 includes a connecting rod 861, a stop rod 862, and a push seat 863;

[0074] One end of the connecting rod 861 is fixedly connected to the sliding seat 84, and the other end of the connecting rod 861 is fixedly connected to the stop rod 862. The push seat 863 is fixedly connected to the rotating shaft 62, and the push seat 863 abuts against the stop rod 862. The push seat 863 can push the stop rod 862 to move horizontally.

[0075] In the thrust assembly 86, the rotating shaft 62 drives the push seat 863 to rotate, the push seat 863 can push the stop lever 862 to move horizontally, and the stop lever 862 drives the sliding seat 84 to slide through the connecting rod 861.

[0076] In this embodiment of the invention, as a preferred embodiment, the filter assembly 9 includes a filter screen 91 and an elastic torsion spring 92. A tailings trough 17 is provided in the water tank 14. The filter screen 91 is rotatably connected to the inner end face of the water tank 14 through the elastic torsion spring 92. The tailings trough 17 is located on one side of the filter screen 91. As the baffle 82 opens and closes intermittently, the water in the arc-shaped guide trough 13 is discharged intermittently, which can prevent impurities from settling at the bottom of the arc-shaped guide trough 13. At the same time, the water in the arc-shaped guide trough 13 carries impurities and intermittently impacts the filter screen 91. Driven by the elastic torsion spring 92, the filter screen 91 swings back and forth, thereby filtering the impurities and discharging them into the tailings trough 17 in a timely manner, avoiding blockage and affecting the magnetic separation efficiency.

[0077] Working principle:

[0078] When in use, coarse ore particles are fed into the feed trough 12, and the first rotating motor 41 is started. The first rotating electrode 41 drives the first roller 42 to rotate. The first roller 42 drives the sliding sleeve 45 to rotate through the gear transmission pair 43. The sliding sleeve 45 drives the second roller 46 to rotate. The first roller 42 and the second roller 46 together crush and grind the coarse ore particles.

[0079] When the second roller 46 rotates, the sliding sleeve 45 drives the bevel gear 472 to move around the fixed rod 44 in a circular motion. The bevel gear 472 meshes with the gear disk 471. Driven by the gear disk 471, the bevel gear 472 rotates on its own. The bevel gear 472 drives the insert rod 473 to move in the guide groove 474. The insert rod 473 pushes the second roller 46 to slide along the sliding sleeve 45. While the second roller 46 rotates around the fixed rod 44, it also moves back and forth along the length of the fixed rod 44. This applies crossbar extrusion force while compressing the coarse ore particles, effectively increasing the crushing effect of the coarse ore particles, thereby improving the magnetic separation efficiency and magnetic separation accuracy, and avoiding device blockage.

[0080] In the pneumatic mechanism 5, when the second roller 46 moves downward relative to the piston plate 55, the air pressure in the cavity on the lower side of the piston plate 55 decreases, the one-way air inlet valve 52 is opened, and the external dust enters the cavity on the lower side of the piston plate 55 through the suction hole 51. Then, the second roller 46 moves upward relative to the piston plate 55, the one-way air outlet valve 53 is opened, and the dust in the cavity on the lower side of the piston plate 55 is discharged through the air outlet 54. The dust enters the water flow in the arc-shaped guide trough 13 through the pipe. Through the pneumatic mechanism 5, the dust during the crushing of coarse ore particles is effectively absorbed, avoiding environmental pollution.

[0081] Then, the second rotating motor 61 drives the rotating shaft 62 to rotate, and the rotating shaft 62 drives the blades 63 to rotate. The blades 63 push the ore at a constant speed. At the same time, the separation of the blades 63 can effectively prevent the ore from getting blocked during the conveying process, which would affect the magnetic separation efficiency.

[0082] At this time, the drive motor 3 drives the magnetic separation cylinder 18 to rotate, thereby performing magnetic separation on the mineral particles in the arc-shaped feed trough 13. The concentrate is adsorbed onto the magnetic separation cylinder 18 and enters the concentrate trough 11 under the interception of the unloading rod 10.

[0083] The water pump 71 pumps water from the water tank 14 through the conduit 72 to the rotating shaft 62, and then washes and removes impurities from the ore through the nozzle 73. As the rotating shaft 62 rotates, the washing range of the nozzle 73 can be increased, and the side wall of the arc-shaped guide chute 13 can be effectively washed.

[0084] The rotating shaft 62 drives the push seat 863 to rotate, and the push seat 863 can push the stop rod 862 to move horizontally. The stop rod 862 drives the sliding seat 84 to slide through the connecting rod 861. The sliding seat 84 releases the limit on the guide seat 83, the spring 85 contracts, and the baffle 82 releases the seal on the arc-shaped guide channel 13, so that the water in the arc-shaped guide channel 13 carries impurities into the mechanism box 81, and then flows into the water tank 14. Then, under the action of the spring 85, the baffle 82 re-seals the arc-shaped guide channel 13.

[0085] As the baffle 82 opens and closes intermittently, the water in the arc-shaped guide trough 13 is discharged intermittently, which can prevent impurities from settling at the bottom of the arc-shaped guide trough 13. At the same time, the water in the arc-shaped guide trough 13 carries impurities and intermittently impacts the filter screen 91. Driven by the elastic torsion spring 92, the filter screen 91 swings back and forth, thereby filtering the impurities and discharging them into the tailings trough 17 in a timely manner, avoiding blockage and affecting the magnetic separation efficiency.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0087] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A magnetic separator for coarse-grained ores, of the type with an external magnetic drum, comprising a casing (1), characterized in that, Also include: The feeding tank (12) is communicated with the shell (1), the roller pressing mechanism (4) is arranged in the feeding tank (12), the roller pressing mechanism (4) can be rolled and crushed to the coarse particle ore, and the air pressure mechanism (5) is arranged in the roller pressing mechanism (4), the air pressure mechanism (5) can absorb the dust generated during rolling; The arc-shaped guide chute (13) is arranged on one side of the magnetic separation cylinder body (18), and the arc-shaped guide chute (13) is provided with the pushing mechanism (6), the pushing mechanism (6) can push the crushed ore along the length direction of the magnetic separation cylinder body (18); the pushing mechanism (6) is communicated with the water washing mechanism (7), and the water washing mechanism (7) can wash the crushed ore; The arc-shaped guide chute (13) is connected with the opening and closing mechanism (8), and under the driving of the pushing mechanism (6), the opening and closing mechanism (8) can be intermittently opened and closed; the opening and closing mechanism (8) is communicated with the water tank (14), the water tank (14) is communicated with the water washing mechanism (7), the water washing mechanism (7) is provided with the filtering assembly (9), and the filtering assembly (9) can filter and collect tailings; The pushing mechanism (6) comprises a second rotating motor (61), a rotating shaft (62) and a blade (63); The second rotating motor (61) is fixedly connected with the side wall of the arc-shaped guide chute (13), the rotating shaft (62) is fixedly connected with the output shaft of the second rotating motor (61), the rotating shaft (62) is spirally provided with the blade (63), and the blade (63) is arranged in the arc-shaped guide chute (13); The water washing mechanism (7) comprises a water pump (71), a conduit (72) and a spray hole (73); The water pump (71) is fixedly connected with the side wall of the shell (1), one end of the conduit (72) is fixedly communicated with the water outlet end of the water pump (71), the other end of the conduit (72) is rotatably communicated with one end of the rotating shaft (62), a plurality of spray holes (73) are arranged on the rotating shaft (62) along the length direction, and the water inlet end of the water pump (71) is communicated with the water tank (14); The opening and closing mechanism (8) comprises a mechanism box (81), a baffle (82), a guide seat (83), a sliding seat (84), a spring (85) and a thrust assembly (86); The mechanism box (81) is communicated with the arc-shaped guide chute (13), the mechanism box (81) is rotatably connected with the baffle (82), and the baffle (82) can be sealingly connected with the side wall of the arc-shaped guide chute (13); The sliding seat (84) is slidably connected in the mechanism box (81), the baffle (82) is fixedly connected with the guide seat (83), the guide seat (83) and the inclined surface of the sliding seat (84) abut each other, the spring (85) is connected between the sliding seat (84) and the inner end face of the mechanism box (81), the thrust assembly (86) can drive the sliding seat (84) to slide in the mechanism box (81), and the mechanism box (81) is communicated with the water tank (14). ​ The thrust assembly (86) comprises a connecting rod (861), a blocking rod (862) and a pushing seat (863); One end of the connecting rod (861) is fixedly connected with the sliding seat (84), the other end of the connecting rod (861) is fixedly connected with the blocking rod (862), the pushing seat (863) is fixedly connected with the rotating shaft (62), and the pushing seat (863) abuts against the blocking rod (862), and the pushing seat (863) can push the blocking rod (862) to move horizontally.

2. The coarse particle ore separating out magnetic drum type magnetic separator according to claim 1, characterized in that, The roller pressing mechanism (4) comprises a first rotating motor (41), a first roller (42), a gear transmission pair (43), a fixed rod (44), a sliding sleeve (45), a second roller (46) and a transmission assembly (47); The feeding groove (12) is provided with a guide groove (15), the first roller (42) is rotatably connected with the inner wall of the feeding groove (12), the first rotating motor (41) is fixedly connected with the central shaft of the first roller (42), the fixed rod (44) is fixedly connected with the inner wall of the feeding groove (12), the second roller (46) is slidably connected along the length direction of the sliding sleeve (45), the sliding sleeve (45) is rotatably connected with the fixed rod (44), the gear transmission pair (43) is arranged between the sliding sleeve (45) and the central shaft of the first roller (42), and the transmission assembly (47) is used for driving the second roller (46) to reciprocatingly slide along the fixed rod (44).

3. The rough particles ore separating out magnetic drum type magnetic separator as claimed in claim 2 wherein, The transmission assembly (47) comprises a gear disc (471), a bevel gear (472), a plug rod (473) and a guide groove (474); The gear disc (471) is fixedly connected with the fixed rod (44), the bevel gear (472) is rotatably connected with the sliding sleeve (45), the bevel gear (472) is engaged with the gear disc (471), the eccentric position of the bevel gear (472) is fixedly connected with the plug rod (473), and the inner wall of the second roller (46) is annularly provided with the guide groove (474), and the plug rod (473) is inserted into the guide groove (474).

4. The rough particles ore separating out magnetic drum type magnetic separator as claimed in claim 2 wherein, The air pressure mechanism (5) comprises air suction holes (51), one-way air inlet valves (52), one-way air outlet valves (53), air outlet holes (54) and a piston plate (55); The second roller (46) is provided with a plurality of air suction holes (51) along the end face, the air suction holes (51) are all communicated with the one-way air inlet valves (52), the piston plate (55) is fixedly connected with the fixed rod (44), and the piston plate (55) is sealingly abutted against the inner wall of the second roller (46); The fixed rod (44) is provided with the air outlet holes (54), and the fixed rod (44) is communicated with the one-way air outlet valves (53), the fixed rod (44) is externally sleeved with a rubber sleeve (16), the rubber sleeve (16) is clamped with the end face of the second roller (46), and the fixed rod (44) is communicated with the arc-shaped guide groove (13) through a pipeline.

5. The rough particles ore separating out magnetic drum type magnetic separator as claimed in claim 1 wherein, The filtering assembly (9) comprises a filtering screen plate (91) and an elastic torsion spring (92), a tailing groove (17) is arranged in the water tank (14), the filtering screen plate (91) is rotationally connected with the inner end surface of the water tank (14) through the elastic torsion spring (92), and the tailing groove (17) is arranged on one side of the filtering screen plate (91).

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