Impurity removal device and impurity removal method for iron ore mining equipment

Abstract

The invention discloses an impurity removal device and impurity removal method for iron ore mining equipment, comprising a magnetic separation mechanism, a feeding component and a screening mechanism, wherein two feeding components are arranged on both sides of the screening mechanism, the magnetic separation mechanism comprises a magnetic separation bin, and one side of the magnetic separation bin is fixedly connected to a feed port; the invention screens the crushed materials through the arranged screening mechanism, and returns the incompletely crushed materials to the jaw crusher for secondary crushing to form a cycle, thereby avoiding the phenomenon of large materials appearing during magnetic separation, and ensuring the quality of magnetic separation; the bin in the feeding component reciprocates vertically, thereby the triangular blocking block continuously leaves the bottom of the bin, and after the triangular blocking block leaves, the materials flow out and fall on the feeding trough, thereby slowing down the feeding speed, avoiding excessive accumulation of materials in the magnetic separation mechanism, and ensuring the quality of magnetic separation; the invention can be connected to the permanent magnet and taken out together by removing the fixed cover, thereby facilitating the replacement of the permanent magnet, without disassembling the shell, and being more flexible.

Description

Technical Field

[0001] The invention relates to the technical field of iron ore mining, in particular to an impurity removal device and an impurity removal method for iron ore mining equipment. Background Art

[0002] Iron ore refers to a well or mountain containing rocks or sediments that can be used to extract iron compounds. Iron ore is mainly used in the steel industry to smelt pig iron with different carbon contents. Iron is the earliest discovered, most widely used, and most consumed metal in the world, and its consumption accounts for about 95% of the total metal consumption. Therefore, the mining of iron ore is particularly important. When mining iron ore, in addition to stones with high iron content, there are also impurity stones that do not contain iron. In order to facilitate the subsequent smelting, these impurity stones need to be removed. The current impurity removal method is mainly magnetic separation. There are two types of magnetic separation, wet and dry. The dry method is to crush the ore and then separate it through a magnetic separator, and the impurity stones are discharged as tailings. The wet method is to use ball milling to make slurry and then magnetic separation. The wet method requires a lot of water, and water resources are seriously wasted. Therefore, the current impurity removal is mostly done by mining. Using dry magnetic separation; for example, the Chinese invention patent with authorization announcement number CN206549827U discloses an iron ore magnetic screening machine, which includes a support seat, a gearbox, a rotating shaft, a support frame, a drum, a magnetic layer and a scraper. The top of the support seat is fixed with a gearbox, one side of the gearbox is axially connected with a motor, the other side of the gearbox is axially connected to one end of the rotating shaft, the other end of the rotating shaft is connected to the top of the support frame through a bearing seat, the middle of the rotating shaft is supported and connected to the inner wall of the drum through a number of symmetrically arranged support rods, the outer wall of the drum is distributed with a magnetic layer, the outer surface of the magnetic layer is covered with a water-proof and wear-resistant layer, one side of the water-proof and wear-resistant layer is parallelly fitted with a scraper, and the two ends of the scraper are arranged at the top of the support frame and the support seat, but the current impurity removal method has the following defects:

[0003] The current impurity removal method requires the ore to be crushed before magnetic separation. However, larger crushed materials will appear during magnetic separation. These crushed materials are heavy and difficult for the magnetic roller of the magnetic separator to adsorb, which will affect the magnetic separation. In addition, magnetic separators now mostly use vibrating feeders to feed materials. Sometimes the feeding speed is too fast, resulting in material accumulation, which will also affect the quality of magnetic separation. In addition, it is currently difficult to replace the internal magnets of the magnetic separator. The shell needs to be removed to take out the magnetic roller, which is not flexible enough when replacing the magnet.

[0004] For this reason, we propose an impurity removal device and impurity removal method for iron ore mining equipment to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an impurity removal device and impurity removal method for iron ore mining equipment to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an impurity removal device for iron ore mining equipment, comprising a magnetic separation mechanism, a feeding assembly and a screening mechanism, two feeding assemblies are arranged on both sides of the screening mechanism, the magnetic separation mechanism comprises a magnetic separation bin, one side of the magnetic separation bin is fixedly connected to a feeding port, the feeding port is connected to the inside of the magnetic separation bin, one end of the inside of the magnetic separation bin is rotatably connected to a first end cover, the edge of the side wall of the first end cover is fixedly connected to a rotating drum, a ring opening is provided at one end of the magnetic separation bin away from the first end cover, a fixed cover is sleeved in the ring opening, the fixed cover is horizontally fixedly connected to a fixed shaft near the center of one side of the magnetic separation bin, the fixed shaft is located inside the rotating drum, a permanent magnet is fixedly sleeved on the fixed shaft, and the cross-sectional shape of the permanent magnet is a sector;

[0007] The feeding assembly includes a supporting base, a feeding trough is arranged on the top surface of the supporting base, the side walls of the supporting base are vertically fixed to the upright frame, the top of the upright frame is horizontally fixed to the horizontal plate, a square opening is vertically provided on the horizontal plate, the square opening is slidably sleeved with a material bin, the material bin is located directly above one end of the feeding trough, and the other end of the feeding trough is located above the feeding port of the magnetic separation mechanism, the bottom surface of the horizontal plate is vertically fixed to the lower plate body near the square opening, the side wall of the bottom end of the lower plate body is fixed to a triangular blocking block, the triangular blocking block is inserted into the bottom end of the material bin, and the height of the top surface of the triangular blocking block away from one end of the lower plate body is less than the height of the other end.

[0008] Preferably, a guide column is horizontally fixed to the center of the side wall of the first end cover, a column-shaped cavity is defined at the free end of the fixed shaft, the guide column is sleeved in the column-shaped cavity, a plurality of balls are rollingly connected to the inner side wall of the column-shaped cavity, the balls contact the outer side wall of the guide column, a second end cover is rotatably provided on the fixed shaft near the fixed cover, and a bearing is fixedly connected between the outer side of the fixed shaft and the center of the second end cover.

[0009] Preferably, the rotating drum is evenly fixed with a plurality of positioning columns at one end away from the first end cover, a plurality of positioning holes are horizontally provided at the edge of the second end cover corresponding to the positions of the plurality of positioning columns, the positioning holes are sleeved with the positioning columns, a plurality of plug-in blocks are fixed to the peripheral side of the fixed cover, a plurality of sockets are provided on the side wall of the ring mouth corresponding to the positions of the plurality of plug-in blocks, the plug-in blocks are inserted in the sockets, the side walls of the sockets are fixed with the plug-in columns, a socket is horizontally provided on the plug-in block, the plug-in columns are inserted into the sockets, the ends of the plug-in columns are fixed with studs, and the studs are threaded with hexagonal bolts.

[0010] Preferably, the end of the magnetic separation bin away from the ring mouth is fixedly connected to a reducer and a drive motor, the rotating shaft end of the drive motor is fixedly connected to the reducer input shaft, the reducer output shaft is fixedly connected to the center of the first end cover, a tailings port is opened at the bottom end of the magnetic separation bin near the feed port, and a concentrate port is opened at the bottom end of the magnetic separation bin away from the feed port.

[0011] Preferably, the top surface of the horizontal plate is vertically fixed to the vertical plate, the side of the silo close to the vertical plate is fixed to the power plate, the power plate slides in contact with the surface of the vertical plate, a slide groove is provided on the side of the vertical plate close to the power plate, the slide groove is vertically slidably connected to a slider, the slider is fixed to the side wall of the power plate, the slide groove is vertically rotatably connected to a reciprocating screw, a threaded sleeve is fixed to the slider, the reciprocating screw is threadedly connected to the threaded sleeve, the side wall of the vertical plate is fixed to the first servo reduction motor, the rotating shaft end of the first servo reduction motor is located inside the vertical plate and fixed to the driving bevel gear, the bottom end of the reciprocating screw is fixed to a long rod, the bottom end of the long rod is fixed to the driven bevel gear, and the driving bevel gear is meshed and connected to the driven bevel gear.

[0012] Preferably, a plurality of columnar blocks are vertically fixed on both sides of the top surface of the support base, an inner cavity is opened at the top of the columnar block, the bottom of the inner cylinder is movably sleeved in the inner cavity, the top of the inner cylinder is fixed to the bottom surface of the feed trough, a third spring is fixed between the top of the columnar block and the bottom surface of the feed trough, and the bottom surface of the feed trough is fixed to the first vibrator.

[0013] Preferably, the screening mechanism includes a base frame, the top surface of the base frame is fixedly connected to a frame, the top surface and both ends of the frame are open structures, a floating frame is movably arranged inside the frame, the floating frame is U-shaped, a screen plate is movably arranged on the inner side of the floating frame, the screen plate is fixedly connected to the first material guide nozzle at one end away from the feeding assembly, the floating frame is fixedly connected to the second material guide nozzle at one end away from the first material guide nozzle, the height of the screen plate close to the first material guide nozzle is lower than that of the other end, the height of the inner bottom surface of the floating frame close to the second material guide nozzle is lower than that of the other end, two L-shaped frames are fixedly connected to both sides of one end of the base frame away from the first material guide nozzle, a feeding channel is fixedly connected between the top ends of the two L-shaped frames, and the bottom end of the feeding channel is located on the top surface of the end of the screen plate.

[0014] Preferably, two U-shaped frames are fixedly connected to the inner side walls of the frame, a strip plate is vertically slidably arranged on the inner side of the U-shaped frame, the strip plate is fixedly connected to the outer side wall of the floating frame, a plurality of first springs are fixedly connected between the bottom surface of the strip plate and the inner bottom surface of the U-shaped frame, two side grooves are arranged on the inner side walls of the U-shaped frame, two side blocks are fixedly connected to the two ends of the strip plate, the side blocks are vertically slidably connected in the side grooves, two side plates are fixedly connected to the inner side walls of the floating frame, two oblique openings are arranged on the side plates, and a sliding spring is arranged in the oblique openings An inclined block is provided, which is fixedly connected to the side wall of the screen plate, and multiple second springs are fixedly connected between the two ends of the inclined block and the two ends of the inclined opening. The top and bottom surfaces of the inclined block are rotatably connected to multiple guide wheels, and the top and bottom surfaces of the inclined opening are fixedly connected to two slide rails, and the guide wheels roll in contact with the slide rails. The bottom surface of the floating frame is fixedly connected to the second exciter, and a top cover is provided on the top surface of the frame, and multiple threaded through holes are opened on both sides of the top cover, and multiple threaded holes are opened on both sides of the top surface of the frame, and the threaded through holes and the threaded holes are threadedly connected to locking bolts.

[0015] Preferably, the feeding assembly includes a support frame, the top surface of the support frame is fixedly connected to a frame frame, the two ends of the inner side of the frame frame are rotatably connected to two rollers, the two rollers are sleeved with conveyor belts, the top surface of the frame frame is rotatably connected to multiple support rollers, the support rollers contact the bottom surface of the conveyor belt, the frame frame is fixedly connected to a material guide plate at one end away from the screening mechanism, the side wall of the frame frame is fixedly connected to a second servo reduction motor, the shaft end of the second servo reduction motor is fixedly connected to a driving pulley, one end of one of the rollers is fixedly connected to a shaft column, a driven pulley is fixedly sleeved on the shaft column, a synchronous belt is sleeved on the driving pulley and the driven pulley, one end of the conveyor belt of one of the feeding assemblies is located below the second material guide nozzle and the other end is located above the silo, and the conveyor belt end of the other feeding assembly is located below the first material guide nozzle.

[0016] The present invention also provides an impurity removal method for an impurity removal device of iron ore mining equipment, comprising the following steps:

[0017] Step 1 Crushing: The mined large iron ore is transported to the jaw crusher through a conveyor line for crushing to obtain crushed material, which is then transported to the screening mechanism through a conveyor line;

[0018] Step 2: Screening: The crushed material enters the screen plate through the feeding channel for screening, the fine material is discharged through the second feed nozzle, the coarse material is discharged through the first feed nozzle, the coarse material returns to the jaw crusher through one of the feed components for re-crushing, and the fine material is transported to the feeding component through another feed component;

[0019] Step three: Magnetic separation: The fine material enters the feed trough through the silo, and is evenly fed into the feed port of the magnetic separation mechanism by means of vibration feeding. After magnetic separation, the iron-containing concentrate is discharged from the concentrate port, and the iron-free debris is discharged from the tailings port, thus completing the ore removal work.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention screens the crushed materials through the arranged screening mechanism, and returns the incompletely crushed materials to the jaw crusher for secondary crushing to form a cycle, thus avoiding the phenomenon of large materials appearing during magnetic separation and ensuring the quality of magnetic separation. The hopper in the feeding assembly moves back and forth vertically, thus the triangular blocking block will continuously leave the bottom of the hopper. After the triangular blocking block leaves, the materials will flow out and fall on the feeding trough, thus slowing down the feeding speed and avoiding excessive accumulation of materials in the magnetic separation mechanism and ensuring the quality of magnetic separation. The present invention can be connected to the permanent magnet and taken out together by removing the fixed cover, thus facilitating the replacement of the permanent magnet without disassembling the shell and being more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the first, second and third embodiments of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the magnetic separation mechanism in the first, second and third embodiments of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-section structure of the magnetic separation mechanism in the first, second and third embodiments of the present invention;

[0025] Figure 4 It is a schematic diagram of the exploded structure of the magnetic separation mechanism in the first, second and third embodiments of the present invention;

[0026] Figure 5 It is a schematic diagram of the explosion structure of the feeding assembly in the first, second and third embodiments of the present invention;

[0027] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at A in the middle

[0028] Figure 7 Schematic diagram of explosion structure at the screening mechanism in the second and third embodiments of the present invention;

[0029] Figure 8 Schematic diagram of the cross-section structure of the screening mechanism in the second and third embodiments of the present invention;

[0030] Fig. 9 Schematic diagram of the cross-sectional structure of the floating frame in the second and third embodiments of the present invention;

[0031] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at B in the middle

[0032] Fig.11 Structural schematic diagram of the feeding assembly in the second and third embodiments of the present invention;

[0033] Fig.12 For the present invention Fig.11 Schematic diagram of the enlarged structure at point C in the middle.

[0034] In the figure: 1, magnetic separation mechanism; 2, feeding assembly; 3, screening mechanism; 4, feeding assembly; 11, magnetic separation bin; 12, feeding port; 13, drum; 14, reducer; 15, driving motor; 16, first end cover; 17, second end cover; 18, fixed cover; 19, ring mouth; 110, fixed axis; 111, bearing; 112, guide column; 113, column cavity; 114, ball; 115, permanent magnet; 116, positioning column; 117, positioning hole; 118, socket; 119, Insert block; 120, socket; 121, plug column; 122, stud; 123, hexagonal bolt; 124, tailings port; 125, concentrate port; 21, support base; 22, feed trough; 23, stand; 24, horizontal plate; 25, square port; 26, silo; 27, lower plate; 28, triangular blocking block; 29, stand; 210, power plate; 211, slide; 212, slider; 213, reciprocating screw; 214, threaded sleeve; 215, first servo reduction motor; 216, Active bevel gear; 217, long rod; 218, driven bevel gear; 219, columnar block; 220, inner cavity; 221, inner column; 222, third spring; 223, first vibrator; 31, bottom frame; 32, frame; 33, floating frame; 34, sieve plate; 35, first guide nozzle; 36, second guide nozzle; 37, second vibrator; 38, U-shaped frame; 39, strip plate; 310, first spring; 311, side groove; 312, side block; 313, side plate; 314, oblique through opening; 315, inclined block; 316, second spring; 317, slide rail; 318, guide wheel; 319, top cover; 320, threaded hole; 321, threaded through hole; 322, locking bolt; 323, L-shaped frame; 324, feeding channel; 41, support frame; 42, frame frame; 43, roller; 44, conveyor belt; 45, guide plate; 46, second servo reduction motor; 47, driving pulley; 48, shaft column; 49, driven pulley; 410, synchronous belt; 411, support roller. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] See also Figure 1-5The present invention provides a technical solution: an impurity removal device for iron ore mining equipment, comprising a magnetic separation mechanism 1, a feeding assembly 2 and a screening mechanism 3, two feeding assemblies 4 are arranged on both sides of the screening mechanism 3, one of the feeding assemblies 4 is used to feed the screened material into the feeding assembly 2, and the other is used to feed the unqualified material back to the jaw crusher for re-crushing, the magnetic separation mechanism 1 comprises a magnetic separation bin 11, one side of the magnetic separation bin 11 is fixedly connected to a feed port 12, the feed port 12 is connected to the inside of the magnetic separation bin 11, and one end of the inside of the magnetic separation bin 11 is rotatably connected to the first An end cover 16, the side wall edge of the first end cover 16 is fixedly connected to the drum 13, a ring opening 19 is provided at one end of the magnetic separation chamber 11 away from the first end cover 16, a fixed cover 18 is sleeved in the ring opening 19, the fixed cover 18 is horizontally fixedly connected to a fixed shaft 110 near the center of one side of the magnetic separation chamber 11, the fixed shaft 110 is located inside the drum 13, a permanent magnet 115 is fixedly sleeved on the fixed shaft 110, and the cross-sectional shape of the permanent magnet 115 is fan-shaped, and the permanent magnet 115 can be connected and taken out together by removing the fixed cover 18, so that the permanent magnet 115 is easy to replace without disassembling the shell;

[0038] The feeding assembly 2 includes a supporting base 21, a feeding trough 22 is arranged on the top surface of the supporting base 21, a vertically fixed frame 23 is connected to the side wall of the supporting base 21, a horizontally fixed cross plate 24 is connected to the top of the vertical frame 23, a square opening 25 is vertically provided on the cross plate 24, a material bin 26 is slidably connected to the square opening 25, the material bin 26 is located directly above one end of the feeding trough 22, and the other end of the feeding trough 22 is located above the feed port 12 of the magnetic separation mechanism 1, and a lower plate 27 is vertically fixed to the bottom surface of the cross plate 24 near the square opening 25, and the lower plate The bottom side wall of 27 is fixedly connected to a triangular blocking block 28, which is inserted into the bottom of the silo 26. The height of the top surface of the triangular blocking block 28 away from one end of the lower plate 27 is less than the height of the other end. The silo 26 moves back and forth vertically, so that the triangular blocking block 28 will continuously leave the bottom of the silo 26. After the triangular blocking block 28 leaves, the material will flow out and fall on the feeding trough 22, which can slow down the feeding speed, avoid excessive accumulation of material in the magnetic separation mechanism 1, and ensure the quality of magnetic separation.

[0039] Embodiment 2:

[0040] See also Figure 1-12 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The guide column 112 is horizontally fixed to the center of the side wall of the first end cover 16. A column cavity 113 is opened at the free end of the fixed shaft 110. The guide column 112 is sleeved in the column cavity 113. The inner wall of the column cavity 113 is rollingly connected with multiple balls 114. The balls 114 contact the outer wall of the guide column 112. The second end cover 17 is rotatably provided on the fixed shaft 110 near the fixed cover 18. A bearing 111 is fixedly connected between the outer side of the fixed shaft 110 and the center of the second end cover 17.

[0041] A plurality of positioning posts 116 are evenly fixed to one end of the rotating drum 13 away from the first end cover 16, a plurality of positioning holes 117 are horizontally provided at the edge of the second end cover 17 corresponding to the positions of the plurality of positioning posts 116, the positioning holes 117 are sleeved with the positioning posts 116, a plurality of plug blocks 119 are fixed to the circumference of the fixed cover 18, a plurality of sockets 118 are provided on the side wall of the ring mouth 19 corresponding to the positions of the plurality of plug blocks 119, the plug blocks 119 are plugged into the sockets 118, a plug post 121 is fixed to the side wall of the socket 118, a socket 120 is horizontally provided on the plug block 119, the plug post 121 is plugged into the socket 120, a stud 122 is fixed to the end of the plug post 121, a hexagonal bolt 123 is threadedly connected to the stud 122, the fixed cover 18 can be removed by removing the hexagonal bolt 123, so as to facilitate the replacement of the permanent magnet 115.

[0042] One end of the magnetic separation bin 11 away from the ring mouth 19 is fixedly connected to the reducer 14 and the drive motor 15, the rotating shaft end of the drive motor 15 is fixedly connected to the input shaft of the reducer 14, and the output shaft of the reducer 14 is fixedly connected to the center of the first end cover 16. A tailings port 124 is provided at the bottom end of the magnetic separation bin 11 near the feed port 12, and a concentrate port 125 is provided at the bottom end of the magnetic separation bin 11 away from the feed port 12. The drive motor 15 is used to drive the drum 13 to rotate.

[0043] The top surface of the horizontal plate 24 is vertically fixed to the vertical plate 29, and the side of the silo 26 close to the vertical plate 29 is fixed to the power plate 210. The power plate 210 slides and contacts the surface of the vertical plate 29. A slide groove 211 is provided on the side of the vertical plate 29 close to the power plate 210. The slide groove 211 is vertically slidably connected to the slider 212. The slider 212 is fixed to the side wall of the power plate 210. The slide groove 211 is vertically rotatably connected to the reciprocating screw rod 213. The slider 212 is fixed to the threaded sleeve 214, and the reciprocating screw rod 213 is threadedly connected. The threaded sleeve 214 and the side wall of the vertical plate 29 are fixedly connected to the first servo reduction motor 215. The rotating shaft end of the first servo reduction motor 215 is located inside the vertical plate 29 and is fixedly connected to the active bevel gear 216. The bottom end of the reciprocating screw 213 is fixedly connected to the long rod 217. The bottom end of the long rod 217 is fixedly connected to the driven bevel gear 218. The active bevel gear 216 is meshedly connected to the driven bevel gear 218. The reciprocating screw 213 is driven to rotate by the first servo reduction motor 215, thereby driving the vertical reciprocating movement of the silo 26.

[0044] A plurality of columnar blocks 219 are vertically fixedly connected on both sides of the top surface of the support base 21, an inner cavity 220 is opened at the top of the columnar block 219, the bottom of the inner column 221 is movably sleeved in the inner cavity 220, the top of the inner column 221 is fixedly connected to the bottom surface of the feeding trough 22, a third spring 222 is fixedly connected between the top of the columnar block 219 and the bottom surface of the feeding trough 22, and the bottom surface of the feeding trough 22 is fixedly connected to the first vibrator 223.

[0045] The screening mechanism 3 includes a base frame 31, the top surface of the base frame 31 is fixedly connected to a frame 32, the top surface and both ends of the frame 32 are open structures, a floating frame 33 is movably arranged inside the frame 32, the floating frame 33 is U-shaped, a sieve plate 34 is movably arranged on the inner side of the floating frame 33, the end of the sieve plate 34 away from the feeding assembly 2 is fixedly connected to the first material guide nozzle 35, the end of the floating frame 33 away from the first material guide nozzle 35 is fixedly connected to the second material guide nozzle 36, the height of the end of the sieve plate 34 close to the first material guide nozzle 35 is lower than the height of the other end, the inner bottom surface of the floating frame 33 close to the second material guide nozzle 36 is lower than the height of the other end, two L-shaped frames 323 are fixedly connected to both sides of the end of the base frame 31 away from the first material guide nozzle 35, a feeding channel 324 is fixedly connected between the top ends of the two L-shaped frames 323, and the bottom end of the feeding channel 324 is located on the top surface of the end of the sieve plate 34.

[0046] Two U-shaped frames 38 are fixedly connected to the inner side walls of the frame 32. A strip plate 39 is vertically slidably arranged inside the U-shaped frame 38. The strip plate 39 is fixedly connected to the outer side wall of the floating frame 33. A plurality of first springs 310 are fixedly connected between the bottom surface of the strip plate 39 and the inner bottom surface of the U-shaped frame 38. Two side grooves 311 are arranged on the inner side walls of the U-shaped frame 38. Two side blocks 312 are fixedly connected to the two ends of the strip plate 39. The side blocks 312 are vertically slidably connected to the side grooves 311. Two side plates 313 are fixedly connected to the inner side walls of the floating frame 33. Two oblique openings 314 are arranged on the side plates 313. An oblique block 315 is slidably arranged inside the oblique opening 314. The oblique block 315 is fixedly connected to the side wall of the sieve plate 34. The two ends of the oblique block 315 are connected to the oblique opening 314. A plurality of second springs 316 are fixedly connected between the two ends, the top and bottom surfaces of the inclined block 315 are rotatably connected to a plurality of guide wheels 318, the top and bottom surfaces of the inclined opening 314 are fixedly connected to two slide rails 317, the guide wheels 318 roll and contact the slide rails 317, the bottom surface of the floating frame 33 is fixedly connected to the second vibrator 37, a top cover 319 is provided on the top surface of the frame 32, a plurality of threaded through holes 321 are provided on both sides of the top cover 319, a plurality of threaded holes 320 are provided on both sides of the top surface of the frame 32, the threaded through holes 321 and the threaded holes 320 are threadedly connected to locking bolts 322, the floating frame 33 is driven to vibrate by the second vibrator 37, and then the screen plate 34 is driven to vibrate, so that the screen plate 34 can perform dual vibration in two directions, which is convenient for spreading the material.

[0047] The feeding assembly 4 includes a support frame 41, the top surface of the support frame 41 is fixedly connected to a frame frame 42, the two ends of the inner side of the frame frame 42 are rotatably connected to two rollers 43, the two rollers 43 are sleeved with a conveyor belt 44, the top surface of the frame frame 42 is rotatably connected to a plurality of support rollers 411, the support rollers 411 contact the bottom surface of the conveyor belt 44, the end of the frame frame 42 away from the screening mechanism 3 is fixedly connected to a material guide plate 45, the side wall of the frame frame 42 is fixedly connected to a second servo reduction motor 46, the shaft end of the second servo reduction motor 46 is fixedly connected to a driving pulley 47, one end of one of the rollers 43 is fixedly connected to a shaft column 48, a driven pulley 49 is fixedly sleeved on the shaft column 48, and a synchronous belt 410 is sleeved on the driving pulley 47 and the driven pulley 49, one end of the conveyor belt 44 of one feeding assembly 4 is located below the second material guide nozzle 36 and the other end is located above the silo 26, and the end of the conveyor belt 44 of the other feeding assembly 4 is located below the first material guide nozzle 35.

[0048] Embodiment 3:

[0049] See also Figure 1-12 , which is the third embodiment of the present invention, is based on the above two embodiments, and this embodiment provides an impurity removal method of an impurity removal device of an iron ore mining equipment, comprising the following steps:

[0050] Step 1 Crushing: The mined large iron ore is conveyed to a jaw crusher through a conveyor line for crushing to obtain crushed material, which is then conveyed to a screening mechanism 3 through a conveyor line;

[0051] Step 2: Screening: The crushed material enters the screen plate 34 through the feeding channel 324 for screening, the fine material is discharged through the second guide nozzle 36, and the coarse material is discharged through the first guide nozzle 35. The coarse material is returned to the jaw crusher through one of the feeding components 4 for re-crushing, and the fine material is transported to the feeding component 2 through another feeding component 4. The crushed material is screened by the screening mechanism 3, and the incompletely crushed material is returned to the jaw crusher for secondary crushing, forming a cycle, thereby avoiding the phenomenon of large materials appearing during magnetic separation and ensuring the quality of magnetic separation;

[0052] Step three: magnetic separation: the fine material enters the feed trough 22 through the hopper 26, and is evenly fed into the feed port 12 in the magnetic separation mechanism 1 by means of vibration feeding. After magnetic separation, the iron-containing concentrate is discharged from the concentrate port 125, and the iron-free miscellaneous materials are discharged from the tailings port 124, thus completing the ore removal work.

[0053] Embodiment 4:

[0054] See also Figure 1-12, which is the fourth embodiment of the present invention. This embodiment is based on the above three embodiments. When the present invention is used, the mined large pieces of iron ore are transported to the jaw crusher through the conveyor line for crushing to obtain crushed materials, which are then transported to the screening mechanism 3 through the conveyor line; the crushed materials enter the screen plate 34 through the feeding channel 324 for screening, and the fine materials are discharged through the second guide nozzle 36, and the coarse materials are discharged through the first guide nozzle 35. The coarse materials are returned to the jaw crusher through one of the feeding components 4 for further crushing, and the fine materials are transported to the feeding component 2 through another feeding component 4; the fine materials enter the feeding trough 22 through the silo 26, and are uniformly fed into the feeding port 12 in the magnetic separation mechanism 1 by vibrating feeding. After magnetic separation, the iron-containing concentrate is discharged from the concentrate port 125, and the iron-free miscellaneous materials are discharged from the concentrate port 125. The ore is then discharged through the tailings port 124, completing the ore removal work; the present invention screens the crushed material through the screening mechanism 3, and returns the incompletely crushed material to the jaw crusher for secondary crushing to form a cycle, thereby avoiding the phenomenon of larger materials appearing during magnetic separation and ensuring the quality of magnetic separation. The hopper 26 in the feeding assembly moves back and forth vertically, so that the triangular blocking block 28 will continuously leave the bottom of the hopper 26. After the triangular blocking block 28 leaves, the material will flow out and fall on the feeding trough 22, thereby slowing down the feeding speed and avoiding excessive accumulation of materials in the magnetic separation mechanism 1, thereby ensuring the quality of magnetic separation; the present invention can be connected to the permanent magnet 115 by removing the fixed cover 18, so that the permanent magnet 115 can be taken out together, which is convenient for replacing the permanent magnet 115 without disassembling the shell, and is more flexible.

[0055] 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. An impurity removal device for iron ore mining equipment, comprising a magnetic separation mechanism (1), a feeding assembly (2) and a screening mechanism (3), characterized in that: Two feeding assemblies (4) are arranged on both sides of the screening mechanism (3); the magnetic separation mechanism (1) comprises a magnetic separation bin (11); one side of the magnetic separation bin (11) is fixedly connected to a feed port (12); the feed port (12) is connected to the interior of the magnetic separation bin (11); one end of the interior of the magnetic separation bin (11) is rotatably connected to a first end cover (16); the edge of the side wall of the first end cover (16) is fixedly connected to a rotating drum (13); an annular opening (19) is provided at one end of the magnetic separation bin (11) away from the first end cover (16); a fixed cover (18) is sleeved in the annular opening (19); a fixed shaft (110) is horizontally fixedly connected to the fixed cover (18) near the center of one side of the magnetic separation bin (11); the fixed shaft (110) is located inside the rotating drum (13); a permanent magnet (115) is fixedly sleeved on the fixed shaft (110); and the cross-sectional shape of the permanent magnet (115) is fan-shaped; The feeding assembly (2) comprises a supporting base (21), the top surface of the supporting base (21) is provided with a feeding trough (22), the side wall of the supporting base (21) is vertically fixedly connected to a vertical frame (23), the top of the vertical frame (23) is horizontally fixedly connected to a horizontal plate (24), a square opening (25) is vertically provided on the horizontal plate (24), the square opening (25) is slidably connected to a material bin (26), the material bin (26) is located directly above one end of the feeding trough (22), and the other end of the feeding trough (22) is located above the feed port (12) of the magnetic separation mechanism (1), the bottom surface of the horizontal plate (24) is vertically fixedly connected to a lower plate body (27) near the square opening (25), the side wall of the bottom end of the lower plate body (27) is fixedly connected to a triangular blocking block (28), the triangular blocking block (28) is inserted into the bottom end of the material bin (26), and the height of the top surface of the triangular blocking block (28) away from one end of the lower plate body (27) is less than the height of the other end; The end of the magnetic separation bin (11) away from the ring opening (19) is fixedly connected to a reducer (14) and a drive motor (15); the rotating shaft end of the drive motor (15) is fixedly connected to the input shaft of the reducer (14); the output shaft of the reducer (14) is fixedly connected to the center of the first end cover (16); a tailings opening (124) is provided at a position close to the feed opening (12) at the bottom end of the magnetic separation bin (11); and a concentrate opening (125) is provided at a position away from the feed opening (12) at the bottom end of the magnetic separation bin (11); The screening mechanism (3) comprises a base frame (31), the top surface of the base frame (31) is fixedly connected to a frame (32), the top surface and both ends of the frame (32) are open structures, a floating frame (33) is movably arranged inside the frame (32), the floating frame (33) is U-shaped, a sieve plate (34) is movably arranged inside the floating frame (33), one end of the sieve plate (34) away from the feeding assembly (2) is fixedly connected to a first material guide nozzle (35), and one end of the floating frame (33) away from the first material guide nozzle (35) is fixedly connected to a first material guide nozzle (35). The end of the bottom frame (31) is fixedly connected to the second material guide nozzle (36), the height of the end of the sieve plate (34) close to the first material guide nozzle (35) is lower than the height of the other end, the inner bottom surface of the floating frame (33) is closer to the second material guide nozzle (36) than the height of the other end, and two L-shaped frames (323) are fixedly connected to both sides of the end of the bottom frame (31) away from the first material guide nozzle (35), and a feeding channel (324) is fixedly connected between the top ends of the two L-shaped frames (323), and the bottom end of the feeding channel (324) is located on the top surface of the end of the sieve plate (34).

2. The impurity removal device for iron ore mining equipment according to claim 1, characterized in that: A guide column (112) is fixedly connected horizontally to the center of the side wall of the first end cover (16); a column-shaped cavity (113) is provided at the free end of the fixed shaft (110); the guide column (112) is sleeved in the column-shaped cavity (113); a plurality of balls (114) are rollingly connected to the inner wall of the column-shaped cavity (113); the balls (114) contact the outer wall of the guide column (112); a second end cover (17) is rotatably provided at a position of the fixed shaft (110) close to the fixed cover (18); and a bearing (111) is fixedly connected between the outer side of the fixed shaft (110) and the center of the second end cover (17).

3. The impurity removal device of an iron ore mining equipment according to claim 2, characterized in that: The end of the rotating drum (13) away from the first end cover (16) is evenly fixed with a plurality of positioning columns (116); a plurality of positioning holes (117) are horizontally provided at the edge of the second end cover (17) corresponding to the positions of the plurality of positioning columns (116); the positioning holes (117) are sleeved with the positioning columns (116); a plurality of plug blocks (119) are fixedly provided on the circumference of the fixed cover (18); a plurality of sockets (118) are provided on the side wall of the ring opening (19) corresponding to the positions of the plurality of plug blocks (119); the plug blocks (119) are plugged into the sockets (118); the side walls of the sockets (118) are fixedly connected with plug columns (121); a socket (120) is horizontally provided on the plug block (119); the plug column (121) is plugged into the socket (120); the end of the plug column (121) is fixedly connected with a stud (122); the stud (122) is threadedly connected with a hexagonal bolt (123).

4. The impurity removal device for iron ore mining equipment according to claim 1, characterized in that: The top surface of the transverse plate (24) is vertically fixed to the vertical plate (29); the side of the material bin (26) close to the vertical plate (29) is fixed to the power plate (210); the power plate (210) slidably contacts the surface of the vertical plate (29); a slide groove (211) is provided on the side of the vertical plate (29) close to the power plate (210); a slider (212) is vertically slidably connected in the slide groove (211); the slider (212) is fixed to the side wall of the power plate (210); the slide groove (211) is vertically rotatably connected to a reciprocating screw rod (213); the slider (212) is vertically rotatably connected to the ... 12) is fixedly connected to a threaded sleeve (214), the reciprocating screw rod (213) is threadedly connected to the threaded sleeve (214), the side wall of the vertical plate (29) is fixedly connected to a first servo reduction motor (215), the rotating shaft end of the first servo reduction motor (215) is located inside the vertical plate (29) and is fixedly connected to a driving bevel gear (216), the bottom end of the reciprocating screw rod (213) is fixedly connected to a long rod (217), the bottom end of the long rod (217) is fixedly connected to a driven bevel gear (218), and the driving bevel gear (216) is meshingly connected to the driven bevel gear (218).

5. The impurity removal device for iron ore mining equipment according to claim 1, characterized in that: A plurality of columnar blocks (219) are vertically fixedly connected to both sides of the top surface of the support base (21); an inner cavity (220) is provided at the top of the columnar block (219); the bottom of the inner column (221) is movably sleeved in the inner cavity (220); the top of the inner column (221) is fixedly connected to the bottom surface of the feed trough (22); a third spring (222) is fixedly connected between the top of the columnar block (219) and the bottom surface of the feed trough (22); and the bottom surface of the feed trough (22) is fixedly connected to a first vibrator (223).

6. The impurity removal device for iron ore mining equipment according to claim 1, characterized in that: Two U-shaped frames (38) are fixedly connected to the inner side walls of the frame (32); a strip plate (39) is vertically slidably arranged inside the U-shaped frame (38); the strip plate (39) is fixedly connected to the outer side wall of the floating frame (33); a plurality of first springs (310) are fixedly connected between the bottom surface of the strip plate (39) and the inner bottom surface of the U-shaped frame (38); two side grooves (311) are provided on the inner side walls of the U-shaped frame (38); two side blocks (312) are fixedly connected to the two ends of the strip plate (39); the side blocks (312) are vertically slidably connected in the side grooves (311); two side plates (313) are fixedly connected to the inner side walls of the floating frame (33); two oblique openings (314) are provided on the side plates (313); an oblique block (315) is slidably arranged in the oblique opening (314); The inclined block (315) is fixedly connected to the side wall of the screen plate (34); a plurality of second springs (316) are fixedly connected between the two ends of the inclined block (315) and the two ends of the inclined opening (314); the top and bottom surfaces of the inclined block (315) are rotatably connected to a plurality of guide wheels (318); the top and bottom surfaces of the inclined opening (314) are fixedly connected to two slide rails (317); the guide wheels (318) roll in contact with the slide rails (317); the bottom surface of the floating frame (33) is fixedly connected to a second exciter (37); a top cover (319) is provided on the top surface of the frame (32); a plurality of threaded through holes (321) are provided on both sides of the top cover (319); a plurality of threaded holes (320) are provided on both sides of the top surface of the frame (32); the threaded through holes (321) and the threaded holes (320) are threadedly connected to locking bolts (322).

7. The impurity removal device for iron ore mining equipment according to claim 1, characterized in that: The material conveying assembly (4) comprises a support frame (41), the top surface of the support frame (41) is fixedly connected to a frame frame (42), the inner ends of the frame frame (42) are rotatably connected to two rollers (43), the two rollers (43) are sleeved with a conveyor belt (44), the top surface of the frame frame (42) is rotatably connected to a plurality of support rollers (411), the support rollers (411) contact the bottom surface of the conveyor belt (44), one end of the frame frame (42) away from the screening mechanism (3) is fixedly connected to a material guide plate (45), and the side wall of the frame frame (42) is fixedly connected to a second servo reduction motor (46), The rotating shaft end of the second servo reduction motor (46) is fixedly connected to a driving pulley (47), the end of one of the rotating rollers (43) is fixedly connected to a shaft column (48), a driven pulley (49) is fixedly sleeved on the shaft column (48), a synchronous belt (410) is sleeved on the driving pulley (47) and the driven pulley (49), one end of the conveyor belt (44) of one of the feeding components (4) is located below the second material guide nozzle (36) and the other end is located above the silo (26), and the end of the conveyor belt (44) of the other feeding component (4) is located below the first material guide nozzle (35).

8. A method for removing impurities using the impurity removal device of iron ore mining equipment according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Crushing: The mined large pieces of iron ore are conveyed to a jaw crusher through a conveyor line for crushing to obtain crushed material, which is then conveyed to a screening mechanism (3) through a conveyor line; Step 2: Screening: The crushed material enters the screen plate (34) through the feeding channel (324) for screening, the fine material is discharged through the second feed nozzle (36), the coarse material is discharged through the first feed nozzle (35), the coarse material is returned to the jaw crusher through one of the feed components (4) for further crushing, and the fine material is transported to the feed component (2) through the other feed component (4); Step 3: Magnetic separation: The fine material enters the feed trough (22) through the hopper (26) and is evenly fed into the feed port (12) of the magnetic separation mechanism (1) by means of vibration feeding. After magnetic separation, the iron-containing concentrate is discharged from the concentrate port (125), and the iron-free impurities are discharged from the tailing port (124), thereby completing the impurity removal of the ore.

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