A dry concentrate screening device and screening method thereof

Abstract

The invention relates to the technical field of ore dressing and screening, and discloses a dry concentrate ore dressing and screening device and a screening method thereof, which solves the problem that ferromagnetic objects may remain on a magnetic roller due to excessive suction, and a scraping assembly needs to be provided to scrape off the ferromagnetic objects remaining on the magnetic roller, but the scraping is not thorough. The invention comprises a frame, a roller is provided above the frame, side plates are fixedly connected to both sides of the roller, a ferromagnetic material hopper located below the roller is fixedly connected to the frame, a tailings hopper located on one side of the roller is fixedly connected to the frame, a plurality of partitions are provided on the roller, the partitions and the side plates are connected by an elastic swinging structure, a stopping unit matched with the partitions is provided on the tailings hopper, a feeding structure matched with the roller is provided on the frame, a rotating shaft is provided in the roller, both ends of the rotating shaft respectively pass through the side plates, and bearings are provided at the connection between the rotating shaft and the side plates, so that ferromagnetic objects are prevented from remaining on the roller, so that the magnetic separation effect is better.

Description

Technical Field

[0001] The invention belongs to the technical field of ore dressing and screening, and specifically relates to a dry concentrate ore dressing and screening device and a screening method thereof. Background Art

[0002] With the country's control over mining resources and the depletion of resources themselves, it is imperative to efficiently utilize mineral resources and save resources. When producing magnetite, it is first necessary to crush it, and then use a magnetic separator to dry-select the crushed magnetite. The yield of dry-selected concentrate directly affects the yield of iron ore concentrate at the ore dressing terminal. Among them, when using the existing dry magnetic separator, ferromagnetic materials often remain on the magnetic drum due to the strong suction of ferromagnetic materials. It is also necessary to set a scraper assembly to scrape off the ferromagnetic materials remaining on the magnetic drum, which is easy to be scraped incompletely, resulting in reduced magnetic separation effect. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a dry concentrate screening device and a screening method thereof, which effectively solves the problem in the above background technology that the ferromagnetic material has too strong suction and will remain on the magnetic drum, and a scraper assembly needs to be provided to scrape off the ferromagnetic material remaining on the magnetic drum, which is prone to incomplete scraping.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dry concentrate beneficiation and screening device, comprising a frame, a drum is arranged above the frame, side plates are fixedly connected to both sides of the drum, a ferromagnetic material hopper located below the drum is fixedly connected to the frame, a tailings hopper located on one side of the drum is fixedly connected to the frame, a plurality of partitions are arranged on the drum, the partitions and the side plates are connected by an elastic swing structure, a stop unit matching the partitions is arranged on the tailings hopper, a feeding structure matching the drum is arranged on the frame, a rotating shaft is arranged in the drum, and the rotating shaft The two ends of the drum respectively pass through the side plates, bearings are provided at the connection between the rotating shaft and the side plates, a driver for driving the rotating shaft to rotate is provided on the frame, the rotating shaft and the side plates are connected by a locking locator, a plurality of magnetic plates are provided in the drum, an adjustment seat is provided on the side of the magnetic plate close to the rotating shaft, the adjustment seat and the magnetic plate are connected by an elastic reset structure, the rotating shaft and the adjustment seat are connected by a spacing adjustment component, support columns are fixedly connected on both sides of the magnetic plate, a plurality of rectangular holes are opened on the side plates, the support columns pass through the corresponding rectangular holes, and an intermittent pushing mechanism matching the support columns is provided on the frame.

[0005] Preferably, the spacing adjustment assembly includes a fixed sleeve sleeved on the outside of the rotating shaft, the two ends of the fixed sleeve are respectively fixedly connected to the two side plates, the external fixed sleeve of the rotating shaft is provided with a plurality of first bevel gears, and the first bevel gears are located in the fixed sleeve, a plurality of second bevel gears are provided on one side of the first bevel gear, and the second bevel gears are meshed with the first bevel gears, a screw rod is fixedly connected to the second bevel gear, the screw rod passes through the fixed sleeve and the adjustment seat, a bearing is provided at the connection between the screw rod and the fixed sleeve, and the connection method between the screw rod and the adjustment seat is a threaded connection.

[0006] Preferably, the elastic reset structure includes a plurality of first fixed columns fixedly mounted on the magnetic plate, the outer sleeve of the first fixed column is provided with a movable sleeve, the movable sleeve is fixedly connected to the adjustment seat, the outer sleeve of the movable sleeve is provided with a first compression spring, the two ends of the first compression spring are respectively fixedly connected to the magnetic plate and the adjustment seat, a guide groove is provided on the inner wall of the movable sleeve, a guide block is provided in the guide groove, and the guide block is fixedly connected to the first fixed column.

[0007] Preferably, the locking locator includes fixed rings respectively fixedly sleeved on both ends of the rotating shaft, the two fixed rings are respectively located on the side away from the two side plates, a movable ring is provided on the side of the fixed ring away from the side plate, a plurality of limit columns are passed through the fixed ring, a plurality of limit holes are opened on the side plate, one end of the limit column is located in the corresponding limit hole, the other end of the limit column is fixedly connected to the movable ring, a tension spring is provided on the outer sleeve of the limit column, and the two ends of the tension spring are respectively fixedly connected to the fixed ring and the movable ring.

[0008] Preferably, the intermittent pushing mechanism includes fixed plates respectively arranged on the sides away from the two side plates, the fixed plates and the frame are fixedly connected, a connecting shaft passes through the fixed plate, a bearing is provided at the connection between the connecting shaft and the fixed plate, a first connecting plate is fixedly connected to the connecting shaft, a second fixing column is fixedly connected to the first connecting plate, a rectangular ring is provided on the outer sleeve of the second fixing column, an arc plate matching with the supporting column is provided above the rectangular ring, the arc plate and the rectangular ring are connected through the second connecting plate, at least two guide columns are fixedly connected to the bottom of the rectangular ring, a plurality of guide holes are opened on the frame, the bottom ends of the guide columns pass through the corresponding guide holes, and the connecting shaft and the side plates are connected through meshing units.

[0009] Preferably, the meshing unit comprises a gear ring fixedly mounted on one side of the side plate, a first gear is fixedly connected to the connecting shaft, and the first gear and the gear ring are meshed.

[0010] Preferably, the driver includes two first brackets fixedly mounted on the frame, two ends of the rotating shaft respectively pass through the two first brackets, and bearings are provided at the connection between the rotating shaft and the first brackets, one of the first brackets is fixedly connected to a motor, and the output end of the motor is fixedly connected to one end of the rotating shaft.

[0011] Preferably, the feeding structure includes a feed hopper arranged above the frame, and the feed hopper is located on the side of the drum away from the tailings hopper, and the feed hopper and the frame are connected by a second bracket.

[0012] Preferably, the stopping unit includes a plurality of stopping plates arranged above the tailings hopper, the stopping plates and the tailings hopper are connected by a connecting column, the elastic swinging structure includes a transmission shaft fixedly mounted on the partition, the transmission shaft passes through the side plate, a bearing is provided at the connection between the transmission shaft and the side plate, a second gear is fixedly connected to the transmission shaft, a tooth plate meshing with the second gear is provided on one side of the side plate, a movable block is fixedly connected to the tooth plate, a third fixed column passes through the movable block, both ends of the third fixed column are fixedly connected to the side plate through the connecting blocks, a second compression spring is provided on the outer sleeve of the third fixed column, both ends of the second compression spring are respectively fixedly connected to the movable block and one of the connecting blocks, the tooth plate and the movable block are respectively in contact with one side of the side plate.

[0013] The present invention also provides a dry concentrate beneficiation and screening method, comprising the dry concentrate beneficiation and screening device as described above, comprising the following steps:

[0014] Step 1: The crushed magnetite is slid between two adjacent partitions through the feeding structure, and the ferromagnetic material is adsorbed on the drum through the magnetic plate located in the drum;

[0015] Step 2: The drive drives the shaft to rotate, and the magnetite rolls on the drum, so that the ferromagnetic substances in the magnetite are adsorbed on the drum, and the tailings between two adjacent partitions that are not adsorbed on the drum slide through the partition and fall onto the tailings hopper;

[0016] Step 3: The elastic swing structure drives the partition to swing relative to the drum, so that the tailings attached to the partition slide onto the tailings hopper;

[0017] Step 4: As the drum continues to rotate, the intermittent pushing mechanism pushes the corresponding support column upward to reduce the magnetic force exerted by the magnetic plate on the ferromagnetic material. The ferromagnetic material falls from the drum to the ferromagnetic material bucket. When the magnetic plate leaves the ferromagnetic material unloading position, the elastic reset structure drives the magnetic plate to move in the opposite direction to reset the magnetic plate to its initial position relative to the drum.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The corresponding support column is pushed upward by the intermittent pushing mechanism to reduce the magnetic force applied by the magnetic plate to the ferromagnetic object. The ferromagnetic object falls from the drum to the ferromagnetic material bucket. When the magnetic plate leaves the ferromagnetic object unloading position, the elastic reset structure drives the magnetic plate to move in the opposite direction to reset the magnetic plate to the initial position relative to the drum. When the ferromagnetic object moves to the preset position, the magnetic force applied to the ferromagnetic object can be reduced to avoid the ferromagnetic object remaining on the drum, so that the magnetic separation effect is better. The spacing between the adjustment seat and the rotating shaft is adjusted by the spacing adjustment component, and then the spacing between the magnetic plate and the rotating shaft is adjusted, so as to control the spacing between the magnetic plate and the inner wall of the drum. The magnetic force applied by the magnetic plate to the ferromagnetic object on the drum can be controlled, which is convenient for practical use and improves the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] In the attached picture:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 A local enlarged schematic diagram of the middle A;

[0024] Figure 3 It is a schematic diagram of the structure of the rectangular ring of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the side plate of the present invention;

[0026] Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0027] Figure 6 It is a structural schematic diagram of the rotating shaft of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure inside the drum of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the fixing sleeve of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the first fixed column and the movable sleeve being separated according to the present invention.

[0031] In the figure: 1, frame; 2, roller; 3, side plate; 4, ferromagnetic material hopper; 5, tailings hopper; 6, partition; 7, rotating shaft; 8, magnetic plate; 9, support column; 10, rectangular hole; 11, adjustment seat; 12, fixed sleeve; 13, first bevel gear; 14, second bevel gear; 15, screw rod; 16, first fixed column; 17, movable sleeve; 18, first compression spring; 19, guide groove; 20, guide block; 21, fixed ring; 22, movable ring; 23, limit column; 24, tension spring; 25, limit hole; 26 , arc plate; 27, gear ring; 28, first gear; 29, connecting shaft; 30, fixed plate; 31, first connecting plate; 32, second fixed column; 33, rectangular ring; 34, second connecting plate; 35, guide column; 36, guide hole; 37, first bracket; 38, motor; 39, feed hopper; 40, second bracket; 41, stop plate; 42, connecting column; 43, transmission shaft; 44, second gear; 45, gear plate; 46, movable block; 47, third fixed column; 48, connecting block; 49, second compression spring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Embodiment 1, by Figures 1 to 9The present invention comprises a frame 1, a drum 2 is arranged above the frame 1, side plates 3 are respectively fixedly connected on both sides of the drum 2, a ferromagnetic material hopper 4 located below the drum 2 is fixedly connected on the frame 1, a tailings hopper 5 located on one side of the drum 2 is fixedly connected on the frame 1, a plurality of partitions 6 are arranged on the drum 2, the partitions 6 and the side plates 3 are connected by an elastic swinging structure, a stopping unit matched with the partitions 6 is arranged on the tailings hopper 5, a feeding structure matched with the drum 2 is arranged on the frame 1, a rotating shaft 7 is arranged in the drum 2, both ends of the rotating shaft 7 pass through the side plates 3 respectively, a bearing is arranged at the connection between the rotating shaft 7 and the side plates 3, a driver for driving the rotating shaft 7 to rotate is arranged on the frame 1, the rotating shaft 7 and the side plates 3 are connected by a locking positioner, a plurality of magnetic plates 8 are arranged in the drum 2, an adjusting seat 11 is arranged on one side of the magnetic plate 8 close to the rotating shaft 7, the adjusting seat 11 and the magnetic plate 8 are connected by an elastic reset structure, the rotating shaft 7 and the adjusting seat 11 are connected by a spacing adjustment component, The support column 9 is fixedly connected, and a plurality of rectangular holes 10 are opened on the side plate 3. The support column 9 passes through the corresponding rectangular holes 10. The frame 1 is provided with an intermittent pushing mechanism that cooperates with the support column 9; the corresponding support column 9 is pushed upward by the intermittent pushing mechanism to reduce the magnetic force exerted by the magnetic plate 8 on the ferromagnetic object, and the ferromagnetic object falls from the roller 2 to the ferromagnetic material bucket 4. When the magnetic plate 8 leaves the ferromagnetic object unloading position, the elastic reset structure drives the magnetic plate 8 to move in the opposite direction so that the magnetic plate 8 is reset to the initial position relative to the roller 2. When the ferromagnetic object moves to the preset position, the magnetic force exerted on the ferromagnetic object can be reduced to avoid the ferromagnetic object from remaining on the roller 2, so that the magnetic separation effect is better. The spacing between the adjustment seat 11 and the rotating shaft 7 is adjusted by the spacing adjustment component, and then the spacing between the magnetic plate 8 and the rotating shaft 7 is adjusted, so as to control the spacing between the magnetic plate 8 and the inner wall of the roller 2. The magnetic force exerted by the magnetic plate 8 on the ferromagnetic object on the roller 2 can be controlled, which is convenient for practical use and improves the scope of application.

[0034] Embodiment 2, based on embodiment 1, Figure 4 , Figure 6 , Figure 7 and Figure 8The spacing adjustment component includes a fixed sleeve 12 sleeved on the outside of the rotating shaft 7, and the two ends of the fixed sleeve 12 are fixedly connected to the two side plates 3 respectively. The external fixed sleeve of the rotating shaft 7 is provided with a plurality of first bevel gears 13, and the first bevel gears 13 are located in the fixed sleeve 12. One side of the first bevel gear 13 is provided with a plurality of second bevel gears 14, and the second bevel gears 14 are meshed with the first bevel gears 13. A screw rod 15 is fixedly connected to the second bevel gear 14, and the screw rod 15 passes through the fixed sleeve 12 and the adjustment seat 11. A bearing is provided at the connection between the screw rod 15 and the fixed sleeve 12. The connection method of the screw rod 15 and the adjustment seat 11 is as follows: The locking positioner comprises a fixing ring 21 fixedly sleeved on both ends of the rotating shaft 7, the two fixing rings 21 are respectively located on the side away from the two side plates 3, a movable ring 22 is provided on the side of the fixing ring 21 away from the side plate 3, a plurality of limiting columns 23 are passed through the fixing ring 21, a plurality of limiting holes 25 are opened on the side plate 3, one end of the limiting column 23 is located in the corresponding limiting hole 25, the other end of the limiting column 23 is fixedly connected to the movable ring 22, a tension spring 24 is sleeved on the outside of the limiting column 23, and the two ends of the tension spring 24 are respectively fixedly connected to the fixing ring 21 and the movable ring 22;

[0035] When the spacing between the adjusting seat 11 and the magnetic plate 8 needs to be adjusted, the staff drives the movable ring 22 to move so that one end of the limiting column 23 is disengaged from the corresponding limiting hole 25, and the tension spring 24 is in a stretched state, releasing the fixed relationship between the rotating shaft 7 and the side plate 3, so that the roller 2 can rotate relative to the rotating shaft 7. The staff drives the roller 2 to rotate relative to the rotating shaft 7, and the second bevel gear 14 rolls on the first bevel gear 13. The second bevel gear 14 and the screw rod 15 rotate relative to the fixed sleeve 12, and the screw rod 15 drives the adjusting seat 11 to move, and the adjustment is changed. The distance between the seat 11 and the rotating shaft 7, the magnetic plate 8 and the elastic reset structure move synchronously with the adjustment seat 11, the distance between the magnetic plate 8 and the inner wall of the drum 2 can be changed, and then the magnetic force applied by the magnetic plate 8 to the ferromagnetic object on the drum 2 can be controlled. When the distance between the adjustment seat 11 and the rotating shaft 7 is adjusted, the staff releases the movable ring 22, and the tension spring 24 drives the movable ring 22 and the limit column 23 to move, so that one end of the limit column 23 is inserted into the corresponding limit hole 25, so that the rotating shaft 7 can be fixed relative to the drum 2 and the side plate 3 again.

[0036] Embodiment 3, based on embodiment 1, Figure 1 , Figure 2 , Figure 3 , Figure 7 and Fig. 9It is given that the elastic reset structure includes a plurality of first fixed columns 16 fixedly mounted on the magnetic plate 8, the outer sleeve of the first fixed column 16 is provided with a movable sleeve 17, the movable sleeve 17 is fixedly connected to the adjustment seat 11, the outer sleeve of the movable sleeve 17 is provided with a first compression spring 18, the two ends of the first compression spring 18 are respectively fixedly connected to the magnetic plate 8 and the adjustment seat 11, a guide groove 19 is provided on the inner wall of the movable sleeve 17, a guide block 20 is provided in the guide groove 19, and the guide block 20 is fixedly connected to the first fixed column 16; the intermittent pushing mechanism includes fixed plates 30 respectively arranged on the side away from the two side plates 3, the fixed plate 30 is fixedly connected to the frame 1, a connecting shaft 29 passes through the fixed plate 30, a bearing is provided at the connection between the connecting shaft 29 and the fixed plate 30, a first connecting plate 31 is fixedly connected to the connecting shaft 29, a second fixed column 32 is fixedly connected to the first connecting plate 31, and the outer wall of the second fixed column 32 The sleeve is provided with a rectangular ring 33, and an arc plate 26 matching with the support column 9 is provided above the rectangular ring 33. The arc plate 26 and the rectangular ring 33 are connected by a second connecting plate 34. At least two guide columns 35 are fixedly connected to the bottom of the rectangular ring 33. A plurality of guide holes 36 are opened on the frame 1. The bottom ends of the guide columns 35 pass through the corresponding guide holes 36. The connecting shaft 29 and the side plate 3 are connected by a meshing unit. The meshing unit includes a gear ring 27 fixedly installed on one side of the side plate 3. The connecting shaft 29 is fixedly connected with a first gear 28, and the first gear 28 and the gear ring 27 are meshed. The driver includes two first brackets 37 fixedly installed on the frame 1. The two ends of the rotating shaft 7 respectively pass through the two first brackets 37, and a bearing is provided at the connection between the rotating shaft 7 and the first bracket 37. A motor 38 is fixedly connected to one of the first brackets 37, and the output end of the motor 38 is fixedly connected to one end of the rotating shaft 7.

[0037] The motor 38 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the side plate 3 and the roller 2 to rotate synchronously through the locking positioner. The side plate 3 drives the ring gear 27 to rotate, and the ring gear 27 drives the first connecting plate 31 to rotate through the first gear 28 and the connecting shaft 29, so that the second fixed column 32 drives the rectangular ring 33 to move upward. Through the design of the guide column 35 and the guide hole 36, the rectangular ring 33 can move smoothly in the vertical direction relative to the frame 1. With the continuous rotation of the side plate 3 and the roller 2, when one of the corresponding magnetic plates 8 moves to the ferromagnetic material unloading position, the support column 9 located at the ferromagnetic material unloading position moves to the top of the arc plate 26. With the continuous rotation of the roller 2 and the side plate 3, the rectangular ring 33 drives the arc plate 26 to move upward through the second connecting plate 34, so that the arc plate 26 pushes the support column 9 located at the ferromagnetic material unloading position to move upward, and the support column 9 drives the magnetic plate 8 moves in the direction of the adjustment seat 11, the magnetic plate 8 and the first fixed column 16 move synchronously, the guide block 20 slides in the guide groove 19, and the first compression spring 18 is in a compressed state. When the distance between the magnetic plate 8 and the adjustment seat 11 reaches the preset position, the magnetic force exerted by the magnetic plate 8 on the ferromagnetic object is reduced, and the ferromagnetic object falls from the roller 2 to the ferromagnetic material bucket 4. As the side plate 3 and the roller 2 continue to rotate, the second fixed column 32 drives the rectangular ring 33 to move downward so that the arc plate 26 drops to the initial position, and the arc plate 26 no longer supports the support column 9. At the same time, the first compression spring 18 drives the magnetic plate 8 to move in the direction away from the adjustment seat 11. Finally, the guide block 20 contacts the inner wall of one side of the guide groove 19, and the first fixed column 16 and the magnetic plate 8 stop moving relative to the movable sleeve 17 and the adjustment seat 11, and the magnetic plate 8 is reset to the initial position relative to the roller 2.

[0038] Embodiment 4, based on embodiment 1, Figure 1 , Figure 2 , Figure 4 and Figure 5 The feeding structure includes a feed hopper 39 arranged above the frame 1, and the feed hopper 39 is located on the side of the drum 2 away from the tailings hopper 5, the feed hopper 39 and the frame 1 are connected by a second bracket 40, the stop unit includes a plurality of stop plates 41 arranged above the tailings hopper 5, the stop plates 41 and the tailings hopper 5 are connected by a connecting column 42, the elastic swing structure includes a transmission shaft 43 fixedly mounted on the partition 6, the transmission shaft 43 passes through the side plate 3, a bearing is provided at the connection between the transmission shaft 43 and the side plate 3, and a bearing is fixed on the transmission shaft 43. A second gear 44 is connected, a tooth plate 45 meshing with the second gear 44 is provided on one side of the side plate 3, a movable block 46 is fixedly connected to the tooth plate 45, a third fixed column 47 runs through the movable block 46, both ends of the third fixed column 47 are fixedly connected to the side plate 3 through connecting blocks 48, a second compression spring 49 is sleeved on the outside of the third fixed column 47, both ends of the second compression spring 49 are fixedly connected to the movable block 46 and one of the connecting blocks 48, and the tooth plate 45 and the movable block 46 are respectively in contact with one side of the side plate 3;

[0039] The crushed magnetite is poured into the feed hopper 39, and the crushed magnetite slides into between two adjacent partitions 6 through the feed hopper 39. As the drum 2 and the partition 6 continue to rotate, when the partition 6 contacts the stop plate 41, the stop plate 41 limits the position of the partition 6. As the drum 2 continues to rotate, the inclination angle of the partition 6 changes, the partition 6 drives the transmission shaft 43 to rotate, the transmission shaft 43 drives the second gear 44 to rotate, and the second gear 44 drives the toothed plate 45 and the movable block 46 to slide relative to the side plate 3. The second compression spring 49 is in a compressed state. When the inclination angle of the partition 6 reaches a preset value, the partition 6 slides over one side of the stop plate 41. The second compression spring 49 drives the movable block 46 and the tooth plate 45 to move in the opposite direction, so that the second gear 44 and the transmission shaft 43 rotate in the opposite direction. Finally, the movable block 46 hits one of the connecting blocks 48, and the partition 6 is reset to its initial position relative to the drum 2 and the side plate 3. The impact force generated by the collision acts on the partition 6, causing the tailings attached to the partition 6 to slide onto the tailings hopper 5.

[0040] A dry concentrate beneficiation and screening method of this embodiment includes the dry concentrate beneficiation and screening device as described above, and includes the following steps:

[0041] Step 1: The crushed magnetite is slid between two adjacent partitions 6 through the feeding structure, and the ferromagnetic material is adsorbed on the drum 2 through the magnetic plate 8 located in the drum 2;

[0042] Step 2: The rotating shaft 7 is driven to rotate by a driver, and the magnetite rolls on the drum 2, so that the ferromagnetic substances in the magnetite are adsorbed on the drum 2, and the tailings between two adjacent partitions 6 that are not adsorbed on the drum 2 slide through the partitions 6 and fall onto the tailings hopper 5;

[0043] Step 3: The elastic swing structure drives the partition 6 to swing relative to the drum 2, so that the tailings attached to the partition 6 slide down to the tailings hopper 5;

[0044] Step 4: As the drum 2 continues to rotate, the corresponding support column 9 is pushed upward by the intermittent pushing mechanism, reducing the magnetic force exerted by the magnetic plate 8 on the ferromagnetic material, and the ferromagnetic material falls from the drum 2 to the ferromagnetic material bucket 4. When the magnetic plate 8 leaves the ferromagnetic material unloading position, the elastic reset structure drives the magnetic plate 8 to move in the opposite direction, so that the magnetic plate 8 is reset to the initial position relative to the drum 2.

[0045] Working principle: During operation, the crushed magnetite is slid into between two adjacent partitions 6 through the feeding structure, and the magnetite rolls on the drum 2 to the lower partition 6 of the two adjacent partitions 6. The ferromagnetic material is adsorbed on the drum 2 through the magnetic plate 8 located in the drum 2, and the rotating shaft 7 is driven by the driver to rotate, and the rotating shaft 7 drives the side plate 3 and the drum 2 to rotate. When the magnetite between the two partitions 6 rotates to the side of the drum 2 close to the tailings hopper 5, the partition 6 originally located at the lower side of the two adjacent partitions 6 rotates to the upper side, and the partitions located between the two adjacent partitions 6 rotate to the upper side. The magnetite between the two adjacent partitions 6 rolls on the roller 2 again, and the magnetite rolls to the lower partition 6 of the two adjacent partitions 6. The magnetite rolls on the roller 2 twice so that the ferromagnetic material in the magnetite is adsorbed on the roller 2. As the roller 2 continues to rotate, the tailings between the two adjacent partitions 6 that are not adsorbed on the roller 2 slide through the partition 6 and fall onto the tailings hopper 5, and the partition 6 contacts the stop unit. As the roller 2 continues to rotate, the inclination angle of the partition 6 changes. When the inclination angle of the partition 6 reaches a preset value, the partition 6 moves away from the stop unit. The elastic swing structure drives the partition 6 to swing relative to the drum 2, so that the tailings attached to the partition 6 slide onto the tailings hopper 5. As the drum 2 continues to rotate, when the ferromagnetic object moves to the top of the ferromagnetic material hopper 4, the ferromagnetic object is located at the ferromagnetic object unloading position, and the corresponding support column 9 is pushed upward by the intermittent pushing mechanism to move the corresponding magnetic plate 8 upward, so that the distance between the magnetic plate 8 and the drum 2 increases, reducing the magnetic force exerted by the magnetic plate 8 on the ferromagnetic object, and the ferromagnetic object falls from the drum 2 to the ferromagnetic material hopper 4. When the magnetic plate 8 leaves the ferromagnetic object unloading position, the ferromagnetic object is unloaded. After the ferromagnetic object is moved to the preset position, the elastic reset structure drives the magnetic plate 8 to move in the opposite direction, so that the magnetic plate 8 is reset to the initial position relative to the drum 2. When the ferromagnetic object moves to the preset position, the magnetic force applied to the ferromagnetic object can be reduced to prevent the ferromagnetic object from remaining on the drum 2, so that the magnetic separation effect is better. The spacing between the adjustment seat 11 and the rotating shaft 7 is adjusted by the spacing adjustment component, and then the spacing between the magnetic plate 8 and the rotating shaft 7 is adjusted, so as to control the spacing between the magnetic plate 8 and the inner wall of the drum 2. The magnetic force applied by the magnetic plate 8 to the ferromagnetic object on the drum 2 can be controlled, which is convenient for practical use and improves the scope of application.

[0046] When the spacing between the adjusting seat 11 and the magnetic plate 8 needs to be adjusted, the staff drives the movable ring 22 to move so that one end of the limiting column 23 is disengaged from the corresponding limiting hole 25, and the tension spring 24 is in a stretched state, releasing the fixed relationship between the rotating shaft 7 and the side plate 3, so that the roller 2 can rotate relative to the rotating shaft 7. The staff drives the roller 2 to rotate relative to the rotating shaft 7, and the second bevel gear 14 rolls on the first bevel gear 13. The second bevel gear 14 and the screw rod 15 rotate relative to the fixed sleeve 12, and the screw rod 15 drives the adjusting seat 11 to move, and the adjustment is changed. The distance between the seat 11 and the rotating shaft 7, the magnetic plate 8 and the elastic reset structure move synchronously with the adjustment seat 11, the distance between the magnetic plate 8 and the inner wall of the drum 2 can be changed, and then the magnetic force exerted by the magnetic plate 8 on the ferromagnetic object on the drum 2 can be controlled. When the distance between the adjustment seat 11 and the rotating shaft 7 is adjusted, the staff releases the movable ring 22, and the tension spring 24 drives the movable ring 22 and the limit column 23 to move, so that one end of the limit column 23 is inserted into the corresponding limit hole 25, so that the rotating shaft 7 can be fixed relative to the drum 2 and the side plate 3 again;

[0047] The motor 38 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the side plate 3 and the roller 2 to rotate synchronously through the locking positioner. The side plate 3 drives the ring gear 27 to rotate, and the ring gear 27 drives the first connecting plate 31 to rotate through the first gear 28 and the connecting shaft 29, so that the second fixed column 32 drives the rectangular ring 33 to move upward. Through the design of the guide column 35 and the guide hole 36, the rectangular ring 33 can move smoothly in the vertical direction relative to the frame 1. With the continuous rotation of the side plate 3 and the roller 2, when one of the corresponding magnetic plates 8 moves to the ferromagnetic material unloading position, the support column 9 located at the ferromagnetic material unloading position moves to the top of the arc plate 26. With the continuous rotation of the roller 2 and the side plate 3, the rectangular ring 33 drives the arc plate 26 to move upward through the second connecting plate 34, so that the arc plate 26 pushes the support column 9 located at the ferromagnetic material unloading position to move upward, and the support column 9 drives the magnetic plate 8 moves in the direction of the adjustment seat 11, the magnetic plate 8 and the first fixed column 16 move synchronously, the guide block 20 slides in the guide groove 19, and the first compression spring 18 is in a compressed state. When the distance between the magnetic plate 8 and the adjustment seat 11 reaches the preset position, the magnetic force exerted by the magnetic plate 8 on the ferromagnetic object is reduced, and the ferromagnetic object falls from the roller 2 to the ferromagnetic material bucket 4. As the side plate 3 and the roller 2 continue to rotate, the second fixed column 32 drives the rectangular ring 33 to move downward so that the arc plate 26 drops to the initial position, and the arc plate 26 no longer supports the support column 9. At the same time, the first compression spring 18 drives the magnetic plate 8 to move in the direction away from the adjustment seat 11. Finally, the guide block 20 contacts the inner wall of one side of the guide groove 19, and the first fixed column 16 and the magnetic plate 8 stop moving relative to the movable sleeve 17 and the adjustment seat 11, and the magnetic plate 8 is reset to the initial position relative to the roller 2;

[0048] The crushed magnetite is poured into the feed hopper 39, and the crushed magnetite slides into between two adjacent partitions 6 through the feed hopper 39. As the drum 2 and the partition 6 continue to rotate, when the partition 6 contacts the stop plate 41, the stop plate 41 limits the position of the partition 6. As the drum 2 continues to rotate, the inclination angle of the partition 6 changes, the partition 6 drives the transmission shaft 43 to rotate, the transmission shaft 43 drives the second gear 44 to rotate, and the second gear 44 drives the toothed plate 45 and the movable block 46 to slide relative to the side plate 3. The second compression spring 49 is in a compressed state. When the inclination angle of the partition 6 reaches a preset value, the partition 6 slides over one side of the stop plate 41. The second compression spring 49 drives the movable block 46 and the tooth plate 45 to move in the opposite direction, so that the second gear 44 and the transmission shaft 43 rotate in the opposite direction. Finally, the movable block 46 hits one of the connecting blocks 48, and the partition 6 is reset to its initial position relative to the drum 2 and the side plate 3. The impact force generated by the collision acts on the partition 6, causing the tailings attached to the partition 6 to slide onto the tailings hopper 5.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dry concentrate screening device, comprising a frame (1), characterized in that: A roller (2) is provided above the frame (1), and side plates (3) are fixedly connected to both sides of the roller (2), a ferromagnetic material hopper (4) located below the roller (2) is fixedly connected to the frame (1), a tailings hopper (5) located on one side of the roller (2) is fixedly connected to the frame (1), a plurality of partitions (6) are provided on the roller (2), the partitions (6) and the side plates (3) are connected via an elastic swing structure, a stop unit matching the partitions (6) is provided on the tailings hopper (5), a feeding structure matching the roller (2) is provided on the frame (1), a rotating shaft (7) is provided inside the roller (2), both ends of the rotating shaft (7) respectively penetrate the side plates (3), and the connection between the rotating shaft (7) and the side plates (3) is A bearing is provided at the joint, a driver for driving the rotating shaft (7) to rotate is provided on the frame (1), the rotating shaft (7) and the side plate (3) are connected via a locking positioner, a plurality of magnetic plates (8) are provided in the drum (2), an adjustment seat (11) is provided on the side of the magnetic plate (8) close to the rotating shaft (7), the adjustment seat (11) and the magnetic plate (8) are connected via an elastic reset structure, the rotating shaft (7) and the adjustment seat (11) are connected via a spacing adjustment component, support columns (9) are fixedly connected to both sides of the magnetic plate (8), a plurality of rectangular holes (10) are provided on the side plate (3), the support columns (9) penetrate the corresponding rectangular holes (10), and an intermittent pushing mechanism matched with the support columns (9) is provided on the frame (1); The spacing adjustment component comprises a fixed sleeve (12) sleeved on the outside of the rotating shaft (7), the two ends of the fixed sleeve (12) are respectively fixedly connected to the two side plates (3), the fixed sleeve outside the rotating shaft (7) is provided with a plurality of first bevel gears (13), and the first bevel gears (13) are located in the fixed sleeve (12), a plurality of second bevel gears (14) are provided on one side of the first bevel gears (13), and the second bevel gears (14) are meshed with the first bevel gears (13), a screw rod (15) is fixedly connected to the second bevel gears (14), the screw rod (15) passes through the fixed sleeve (12) and the adjustment seat (11), a bearing is provided at the connection between the screw rod (15) and the fixed sleeve (12), and the screw rod (15) and the fixed sleeve (12) are connected to the fixed sleeve (12). The connection between the rod (15) and the adjustment seat (11) is a threaded connection; the elastic reset structure comprises a plurality of first fixed columns (16) fixedly mounted on the magnetic plate (8); the first fixed columns (16) are provided with a movable sleeve (17) on the outside; the movable sleeve (17) and the adjustment seat (11) are fixedly connected; the movable sleeve (17) is provided with a first compression spring (18) on the outside; the two ends of the first compression spring (18) are respectively fixedly connected to the magnetic plate (8) and the adjustment seat (11); a guide groove (19) is provided on the inner wall of the movable sleeve (17); a guide block (20) is provided in the guide groove (19); the guide block (20) and the first fixed column (16) are fixedly connected; The intermittent pushing mechanism comprises a fixing plate (30) respectively arranged on the side away from the two side plates (3); the fixing plate (30) is fixedly connected to the frame (1); a connecting shaft (29) passes through the fixing plate (30); a bearing is provided at the connection between the connecting shaft (29) and the fixing plate (30); a first connecting plate (31) is fixedly connected to the connecting shaft (29); a second fixing column (32) is fixedly connected to the first connecting plate (31); a rectangular ring (33) is sleeved on the outside of the second fixing column (32); an arc plate (26) matching with the support column (9) is provided above the rectangular ring (33); the arc plate (26) and the rectangular ring (33) are connected via the second connecting plate (34); at least two guide columns (35) are fixedly connected to the bottom of the rectangular ring (33); a plurality of guide holes (36) are provided on the frame (1); the bottom ends of the guide columns (35) pass through the corresponding guide holes (36); and the connecting shaft (29) and the side plates (3) are connected via a meshing unit.

2. A dry concentrate screening device according to claim 1, characterized in that: The locking positioner comprises fixed rings (21) respectively fixedly sleeved on both ends of the rotating shaft (7), the two fixed rings (21) are respectively located on the sides of the two side plates (3) away from each other, a movable ring (22) is provided on the side of the fixed ring (21) away from the side plate (3), a plurality of limiting columns (23) pass through the fixed ring (21), a plurality of limiting holes (25) are opened on the side plate (3), one end of the limiting column (23) is located in the corresponding limiting hole (25), the other end of the limiting column (23) is fixedly connected to the movable ring (22), and a tension spring (24) is sleeved on the outside of the limiting column (23), and the two ends of the tension spring (24) are respectively fixedly connected to the fixed ring (21) and the movable ring (22).

3. A dry concentrate screening device according to claim 2, characterized in that: The meshing unit comprises a gear ring (27) fixedly mounted on one side of the side plate (3); a first gear (28) is fixedly connected to the connecting shaft (29), and the first gear (28) and the gear ring (27) are meshed.

4. A dry concentrate screening device according to claim 1, characterized in that: The driver comprises two first brackets (37) fixedly mounted on the frame (1), the two ends of the rotating shaft (7) respectively pass through the two first brackets (37), and a bearing is provided at the connection between the rotating shaft (7) and the first bracket (37), a motor (38) is fixedly connected to one of the first brackets (37), and the output end of the motor (38) is fixedly connected to one end of the rotating shaft (7).

5. A dry concentrate screening device according to claim 1, characterized in that: The feeding structure comprises a feed hopper (39) arranged above the frame (1), and the feed hopper (39) is located on a side of the drum (2) away from the tailings hopper (5), and the feed hopper (39) and the frame (1) are connected via a second bracket (40).

6. A dry concentrate screening device according to claim 1, characterized in that: The stop unit comprises a plurality of stop plates (41) arranged above the tailings hopper (5), the stop plates (41) and the tailings hopper (5) being connected via a connecting column (42), the elastic swing structure comprising a transmission shaft (43) fixedly mounted on the partition plate (6), the transmission shaft (43) passing through the side plate (3), a bearing being provided at the connection between the transmission shaft (43) and the side plate (3), a second gear (44) being fixedly connected to the transmission shaft (43), and a toothed plate (44) meshing with the second gear (44) being provided on one side of the side plate (3). 5), a movable block (46) is fixedly connected to the tooth plate (45), a third fixed column (47) passes through the movable block (46), two ends of the third fixed column (47) are respectively fixedly connected to the side plate (3) through a connecting block (48), a second compression spring (49) is sleeved on the outside of the third fixed column (47), two ends of the second compression spring (49) are respectively fixedly connected to the movable block (46) and one of the connecting blocks (48), and the tooth plate (45) and the movable block (46) are respectively in contact with one side of the side plate (3).

7. A dry concentrate beneficiation and screening method, comprising the dry concentrate beneficiation and screening device according to claim 1, characterized in that: The following steps are involved: Step 1: The crushed magnetite is slid between two adjacent partitions (6) through the feeding structure, and the ferromagnetic material is adsorbed on the drum (2) through the magnetic plate (8) located in the drum (2); Step 2: The rotating shaft (7) is driven to rotate by a driver, and the magnetite rolls on the drum (2), so that the ferromagnetic substances in the magnetite are adsorbed on the drum (2), and the tailings between two adjacent partitions (6) that are not adsorbed on the drum (2) slide through the partitions (6) and fall onto the tailings hopper (5); Step 3: The elastic swing structure drives the partition (6) to swing relative to the drum (2), so that the tailings attached to the partition (6) slide down to the tailings hopper (5); Step 4: As the drum (2) continues to rotate, the corresponding support column (9) is pushed upward by the intermittent pushing mechanism, thereby reducing the magnetic force exerted by the magnetic plate (8) on the ferromagnetic material, and the ferromagnetic material falls from the drum (2) onto the ferromagnetic material bucket (4). When the magnetic plate (8) leaves the ferromagnetic material unloading position, the elastic reset structure drives the magnetic plate (8) to move in the opposite direction, so that the magnetic plate (8) is reset to the initial position relative to the drum (2).

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