Rare earth crusher with screening and circulating crushing functions

Abstract

The invention discloses a rare earth crusher with screening and circulating crushing functions, and relates to the technical field of rare earth crushing. The rare earth crusher with the screening and circulating crushing functions aims at solving the technical problems that in the prior art, a rare earth crusher cannot circularly crush and is difficult to meet the crushing requirement at a time, crushing rollers are prone to tooth clamping and damage, and the maintenance cost is high. The rare earth crusher comprises a crusher body; a feeding groove is fixedly connected to the left end of the crusher body, a fixing plate is fixedly connected to the upper end of the crusher body, a feeding assembly used for feeding is arranged between the feeding groove and the fixing plate, a crushing groove is formed in the crusher body, and a crushing assembly used for crushing large rare earth blocks is arranged in the crushing groove. According to the rare earth crusher with the screening and circulating crushing functions, particle powder which does not meet the diameter requirement is screened through the screening frame, rare earth particles which do not pass through are guided into the feeding groove again to be circularly crushed till the requirements are met, operation steps are reduced, and the crushing efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of rare earth crushing, and particularly relates to a rare earth crusher with a screening and circulating crushing function. Background Art

[0002] A rare earth crusher is a device used to crush and pulverize raw materials such as rare earth ores or rare earth permanent magnet materials. Rare earth materials usually have high hardness and brittleness, so they need to be crushed to meet the requirements of subsequent processing and utilization.

[0003] Currently, the working principle of a rare earth crusher is usually to place the raw materials in the crushing chamber and apply mechanical impact, extrusion, cutting, or grinding forces to crush the raw materials. However, it is difficult for existing rare earth crushers to completely crush rare earth ores in one go. After the first crushing, there are still relatively large particles that do not meet the usage requirements. It is necessary to screen the crushed rare earth particles and then put them back into the rare earth crusher for secondary crushing. In this process, the operation is relatively cumbersome, and it is difficult to efficiently crush rare earth to directly obtain rare earth particles that meet the requirements. Moreover, when in use, hard rare earth blocks are directly crushed, which easily increases the wear of the crushing rollers, and even causes problems such as gear jamming, motor damage, and tooth breakage, resulting in high maintenance costs.

[0004] Therefore, aiming at the problems that the existing rare earth crusher is difficult to meet the crushing requirements in one go and is prone to damage with high maintenance costs, it is urgently necessary to be solved to improve the usage scenario of the rare earth crusher. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a rare earth crusher with a screening and circulating crushing function. This rare earth crusher with a screening and circulating crushing function aims to solve the technical problems that the existing rare earth crusher cannot perform circulating crushing, is difficult to meet the crushing requirements in one go, and has increased wear of the crushing rollers, and is even prone to gear jamming and damage, resulting in high maintenance costs.

[0007] (2) Technical Solutions

[0008] To solve the above technical problems, the present invention provides a rare earth crusher with a screening and circulating crushing function, including a crusher main body; wherein, a feeding trough is fixedly connected to the left end of the crusher main body, a fixing plate is fixedly connected to the upper end of the crusher main body, a feeding assembly for feeding is arranged between the feeding trough and the fixing plate, a crushing trough is arranged inside the crusher main body, a crushing assembly for crushing larger rare earth blocks is arranged inside the crushing trough, a fine crushing assembly is arranged inside the crusher main body, a transmission assembly for transmission is arranged between the crushing assembly and the fine crushing assembly, a connecting shaft is fixedly connected inside the crusher main body, a screening assembly for sieving and circulating crushing is arranged outside the connecting shaft, an output assembly for outputting fine materials is arranged at the lower end of the crusher main body, and a drying assembly for drying rare earth is arranged at the upper end of the feeding assembly.

[0009] Further, the feeding assembly includes a conveying motor, a first transmission shaft, a second transmission shaft, a feeding conveyor belt and a feeding hopper. The conveying motor is fixedly connected to the outside of the fixing plate, the first transmission shaft is rotatably connected inside the fixing plate, the second transmission shaft is rotatably connected inside the feeding trough, the conveying motor is connected to the first transmission shaft through a coupling, the feeding conveyor belt is arranged outside the first transmission shaft and the second transmission shaft, and multiple groups of feeding hoppers are fixedly connected to the outside of the feeding conveyor belt. By setting the conveying motor to drive the feeding conveyor belt outside the first transmission shaft and the second transmission shaft to convey the rare earth blocks inside the feeding trough into the crusher main body, the feeding hoppers arranged on the outside thereof scrape up the rare earth at the arc-shaped bottom of the feeding trough and the rare earth sieved from the rear inclined surface and convey it upward, forming a crushing and screening cycle.

[0010] Further, the feeding assembly further includes a top protection plate and a side protection plate. The top protection plate is fixedly connected to the upper end of the crusher main body, and the side protection plate is fixedly connected inside the crusher main body. The side protection plate is located above the crushing trough. By setting the top protection plate and the side protection plate, it can be avoided that during the crushing process, the rare earth blocks shoot out from the upper end and the front end of the crusher main body, causing injuries to the operators.

[0011] Further, the crushing assembly includes an arc-shaped baffle, an arc-shaped groove, a rotating shaft, a fixed sleeve and a fixed block. The arc-shaped baffle is fixedly connected inside the crushing trough, multiple groups of arc-shaped grooves are opened inside the arc-shaped baffle, the rotating shaft is rotatably connected inside the crusher main body, multiple groups of fixed sleeves are fixedly connected to the outside of the rotating shaft, the fixed sleeves correspond to the arc-shaped grooves one by one, and multiple groups of fixed blocks are fixedly connected to the outside of the fixed sleeves. When the rare earth blocks enter the inside of the crushing trough, they are staggered and distributed on the upper end of the arc-shaped baffle and inside the arc-shaped grooves, which is convenient for better hammering in the later stage.

[0012] Furthermore, the crushing component further includes a rotating rod, a connecting bolt, a crushing hammer, and a leakage groove. The rotating rod is rotatably connected to the outside of the fixed block. A connecting bolt is arranged inside the rotating rod. The crushing hammer is rotatably connected to the outside of the connecting bolt. The width of the crushing hammer is slightly smaller than the width of the arc-shaped groove. A leakage groove is opened at the lower end of the arc-shaped baffle. When the rotating shaft drives the fixed sleeve and the rotating rod outside the fixed block to rotate, the crushing hammer connected by the connecting bolt hammers the rare earth blocks inside the arc-shaped groove under the action of the centrifugal force of high-speed rotation. Since the crushing hammer is rotatably connected to the connecting bolt, it avoids the direct hard hammering that causes the crushing hammer to be damaged at an accelerated rate. And after damage, the single crushing hammer can be directly disassembled and replaced to reduce costs. The fine particles of rare earth after hammering fall from the leakage groove opened at the lower end of the arc-shaped baffle to the lower end for more detailed crushing.

[0013] Furthermore, the pulverizing component includes a pulverizing roller, a reduction motor, and a transmission gear. Two groups of pulverizing rollers are rotatably connected inside the crusher main body. The reduction motor is fixedly connected to the outside of the crusher main body. The reduction motor is connected to one group of pulverizing rollers through a coupling. Transmission gears are fixedly connected to the outside of the two groups of pulverizing rollers. The two groups of transmission gears mesh with each other. After starting the reduction motor, the two groups of pulverizing rollers are driven to move relative to each other under the action of the transmission gears, and the rare earth blocks are pulverized more carefully. Since the rare earth is hammered at the upper end and then falls between the two groups of pulverizing rollers, its pulverizing efficiency is higher, and it avoids phenomena such as the rare earth blocks being too large and causing tooth jamming and tooth breakage, better protecting the pulverizing rollers and extending their service life.

[0014] Furthermore, the transmission component includes a first pulley, a second pulley, and a transmission belt. The first pulley is fixedly connected to the outside of one group of transmission gears. The second pulley is fixedly connected to the outside of the rotating shaft. The transmission belt is arranged outside the first pulley and the second pulley. The diameter of the first pulley is larger than the diameter of the second pulley. When the reduction motor is started, the first pulley drives the second pulley to rotate through the transmission belt, so that the rotating shaft and the transmission gear rotate synchronously. Since the diameter of the first pulley is larger than that of the second pulley, the rotating shaft has a higher speed to generate the centrifugal force that drives the crushing hammer.

[0015] Further, the screening assembly includes a vibrating frame, a sliding groove, a screening frame, a handle and a guiding plate. The vibrating frame is rotatably connected to the outside of the connecting shaft. A sliding groove is formed inside the vibrating frame. The screening frame is slidably connected inside the sliding groove. The handle is fixedly connected to the outside of the screening frame. The guiding plate is fixedly connected to the outside of the vibrating frame. The guiding plate is located at the upper end of the feeding chute. When the rare earth is crushed by the crushing roller and falls onto the upper end of the screening frame inside the vibrating frame, it screens the particle powder that does not meet the diameter requirement. The unpassed rare earth particles are guided by the guiding plate back into the feeding chute and slide to the bottom. Under the action of the feeding assembly, they are recycled and crushed again until they meet the requirements. Since the screening frame is slidably connected to the sliding groove, it can be pulled out through the handle according to the needs to replace the screen mesh of different specifications.

[0016] Further, the screening assembly further includes a double-shaft motor, an eccentric wheel disc, a connecting rod and a docking shaft. The double-shaft motor is fixedly connected to the outside of the crusher main body. Eccentric wheel discs are arranged at both ends of the double-shaft motor. The connecting rod is rotatably connected to the outside of the eccentric wheel disc. The docking shaft is fixedly connected to the outside of the connecting rod. The docking shaft is rotatably connected to the vibrating frame. By driving the eccentric wheel disc to rotate through the double-shaft motor, the connecting rod and the docking shaft on its outside drive the connected vibrating frame to vibrate up and down at a high frequency, improving the screening efficiency.

[0017] Further, the output assembly includes a guiding plate, a fixing frame, an output roller, an output motor and a discharge belt. The guiding plate is fixedly connected to the inside of the crusher main body. The guiding plate is located at the lower end of the vibrating frame. The fixing frame is fixedly connected to the outside of the crusher main body. Output rollers are rotatably connected to both the crusher main body and the inside of the fixing frame. The output motor is fixedly connected to the outside of the crusher main body. The output motor and the output roller inside the crusher main body are connected by a coupling. A discharge belt is arranged on the outside of the two output rollers. The qualified rare earth particles after screening are guided to the upper end of the discharge belt under the action of the guiding plate. Then, the output motor is started to drive the output roller to rotate, so that the discharge belt on the outside transports the crushed rare earth particles outwards.

[0018] Further, the drying assembly includes a heating cover, a heating pipe, a heating control box and a ventilation slot. The heating cover is fixedly connected to the upper end of the feeding chute. The heating pipe is arranged inside the heating cover. The heating control box is fixedly connected to the outside of the heating cover. The heating pipe is electrically connected to the heating control box. The ventilation slot is opened at the upper end of the heating cover. By controlling the heating pipe inside the heating cover through the heating control box to increase the temperature, the rare earth blocks inside the feeding hopper are heated and dried, avoiding the adhesion caused by the entry of wet rare earth blocks into the crusher main body for crushing, facilitating the subsequent rapid crushing and the maintenance of the machine. The arranged ventilation slot can enable the evaporated moisture to disperse quickly, accelerating the drying process.

[0019] (3) Beneficial effects

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The screening frame is provided to screen the particulate powder that does not meet the diameter requirement. The unpassed rare earth particles are guided by the guide plate and re-introduced into the feeding trough, and slide downward. Under the action of the feeding assembly, they are recycled and broken again until they meet the requirements. At the same time, the double-shaft motor is started to drive the eccentric wheel disc to rotate, driving the vibration frame to vibrate up and down at high frequency, improving the screening efficiency. The qualified rare earth particles after screening are guided to the upper end of the discharge belt under the action of the guide plate. Then, the output motor is started to transmit the rare earth particles on the discharge belt outward. Compared with the existing crusher, the qualified rare earth particles can be directly obtained after cyclic screening and crushing, reducing the operation steps and improving the crushing efficiency.

[0022] 2. The crushing hammer is provided to hammer the rare earth block inside the arc-shaped groove under the action of the centrifugal force of high-speed rotation. Since the crushing hammer is rotationally connected to the connecting bolt, it is avoided that the direct hard hammering causes the rapid damage of the crushing hammer, and after damage, the single crushing hammer can also be directly disassembled and replaced to reduce the cost. The fine rare earth particles after hammering fall from the leakage groove opened at the lower end of the arc-shaped baffle to the lower end. The two crushing rollers move relatively to crush the rare earth block more finely. Since the rare earth is hammered at the upper end and then falls between the two crushing rollers, its crushing efficiency is higher, and the phenomenon of the rare earth block being too large and causing tooth jamming and tooth breakage is avoided, reducing the wear of the crushing rollers and better protecting the crushing rollers and extending their service life.

[0023] 3. The heating control box is provided to control the heating tube inside the heating cover to raise the temperature, heating and drying the rare earth block inside the feeding hopper, avoiding the adhesion caused by the entry of wet rare earth blocks into the main body of the crusher during crushing, facilitating rapid crushing in the later stage and the maintenance of the machine. The provided air permeable grooves can enable the evaporated moisture to quickly disperse and accelerate the drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic diagram of a specific embodiment of a rare earth crusher with a screening and cyclic crushing function of the present invention;

[0025] Figure 2 It is a rear three-dimensional structure schematic diagram of a specific embodiment of a rare earth crusher with a screening and cyclic crushing function of the present invention;

[0026] Figure 3 It is a left-side structure schematic diagram of a specific embodiment of a rare earth crusher with a screening and cyclic crushing function of the present invention;

[0027] Figure 4 It is a structure schematic diagram of a drying component of a specific embodiment of a rare earth crusher with a screening and cyclic crushing function of the present invention;

[0028] Figure 5 Schematic cross-sectional structure diagram of a specific embodiment of the rare earth crusher with screening and circulating crushing function of the present invention;

[0029] Figure 6 Schematic cross-sectional structure diagram of the crusher main body of a specific embodiment of the rare earth crusher with screening and circulating crushing function of the present invention;

[0030] Figure 7 Schematic structure diagram of the arc-shaped baffle of a specific embodiment of the rare earth crusher with screening and circulating crushing function of the present invention;

[0031] Figure 8 Schematic structure diagram of the crushing hammer of a specific embodiment of the rare earth crusher with screening and circulating crushing function of the present invention;

[0032] Figure 9 Schematic disassembled structure diagram of the screening assembly of a specific embodiment of the rare earth crusher with screening and circulating crushing function of the present invention.

[0033] The reference signs in the drawings are: 1. Crusher main body; 2. Feeding trough; 3. Fixed plate; 4. Conveyor motor; 5. First transmission shaft; 6. Second transmission shaft; 7. Feeding conveyor belt; 8. Feeding hopper; 9. Top protection plate; 10. Side protection plate; 11. Crushing trough; 12. Arc-shaped baffle; 13. Arc-shaped groove; 14. Rotating shaft; 15. Fixed sleeve; 16. Fixed block; 17. Rotating rod; 18. Connecting bolt; 19. Crushing hammer; 20. Leakage trough; 21. Crushing roller; 22. Reduction motor; 23. Transmission gear; 24. First pulley; 25. Second pulley; 26. Transmission belt; 27. Connecting shaft; 28. Vibration frame; 29. Sliding groove; 30. Screening frame; 31. Handle; 32. Guide plate; 33. Biaxial motor; 34. Eccentric wheel disc; 35. Connecting rod; 36. Docking shaft; 37. Guide plate; 38. Output roller; 39. Fixed frame; 40. Output motor; 41. Discharge conveyor belt; 42. Heating cover; 43. Heating pipe; 44. Heating control box; 45. Ventilation slot; 100. Feeding assembly; 200. Crushing assembly; 300. Crushing component; 400. Transmission component; 500. Screening component; 600. Output component; 700. Drying component. Specific embodiments

[0034] A rare earth crusher with screening and circulating crushing function, according to Figures 1-9As shown in the figure, it includes a crusher main body 1; a feeding chute 2 is fixedly connected to the left end of the crusher main body 1, a fixing plate 3 is fixedly connected to the upper end of the crusher main body 1, a feeding assembly 100 for feeding is arranged between the feeding chute 2 and the fixing plate 3, a crushing groove 11 is arranged inside the crusher main body 1, a crushing assembly 200 for crushing larger rare earth blocks is arranged inside the crushing groove 11, a fine crushing assembly 300 is arranged inside the crusher main body 1, a transmission assembly 400 for transmission is arranged between the crushing assembly 200 and the fine crushing assembly 300, a connecting shaft 27 is fixedly connected inside the crusher main body 1, a screening assembly 500 for sieving and circulating crushing is arranged outside the connecting shaft 27, an output assembly 600 for outputting fine materials is arranged at the lower end of the crusher main body 1, and a drying assembly 700 for drying rare earth is arranged at the upper end of the feeding assembly 100.

[0035] Among them, the feeding assembly 100 includes a conveying motor 4, a first transmission shaft 5, a second transmission shaft 6, a feeding conveyor belt 7 and a feeding hopper 8. The conveying motor 4 is fixedly connected to the outside of the fixing plate 3, the first transmission shaft 5 is rotatably connected inside the fixing plate 3, the second transmission shaft 6 is rotatably connected inside the feeding chute 2, the conveying motor 4 is connected to the first transmission shaft 5 through a coupling, the feeding conveyor belt 7 is arranged outside the first transmission shaft 5 and the second transmission shaft 6, and multiple feeding hoppers 8 are fixedly connected to the outside of the feeding conveyor belt 7. The feeding conveyor belt 7 driven by the arranged conveying motor 4 conveys the rare earth blocks inside the feeding chute 2 into the crusher main body 1, and the feeding hoppers 8 arranged on its outside scrape up the rare earth at the arc-shaped bottom of the feeding chute 2 and the rare earth screened by the rear-end inclined surface and convey it upward, forming a crushing and screening cycle. The feeding assembly 100 further includes a top protection plate 9 and a side protection plate 10. The top protection plate 9 is fixedly connected to the upper end of the crusher main body 1, the side protection plate 10 is fixedly connected inside the crusher main body 1, and the side protection plate 10 is located at the upper end of the crushing groove 11. By arranging the top protection plate 9 and the side protection plate 10, it can be avoided that during the crushing process, the rare earth blocks shoot out from the upper end and the front end of the crusher main body 1, causing injury to the operator.

[0036] Meanwhile, the crushing component 200 includes an arc-shaped baffle 12, an arc-shaped groove 13, a rotating shaft 14, a fixed sleeve 15 and a fixed block 16. An arc-shaped baffle 12 is fixedly connected inside the crushing groove 11. Multiple groups of arc-shaped grooves 13 are formed inside the arc-shaped baffle 12. A rotating shaft 14 is rotatably connected inside the crusher main body 1. Multiple groups of fixed sleeves 15 are fixedly connected to the outer side of the rotating shaft 14. The fixed sleeves 15 correspond to the arc-shaped grooves 13 one by one. Multiple groups of fixed blocks 16 are fixedly connected to the outer side of the fixed sleeves 15. When the rare earth blocks enter the inside of the crushing groove 11, they are staggered and distributed on the upper end of the arc-shaped baffle 12 and inside the arc-shaped grooves 13, which is convenient for better hammering in the later stage. The crushing component 200 further includes a rotating rod 17, a connecting bolt 18, a crushing hammer 19 and a leakage groove 20. A rotating rod 17 is fixedly connected to the outer side of the fixed block 16. A connecting bolt 18 is arranged inside the rotating rod 17. A crushing hammer 19 is rotatably connected to the outer side of the connecting bolt 18. The width of the crushing hammer 19 is slightly smaller than the width of the arc-shaped groove 13. A leakage groove 20 is formed at the lower end of the arc-shaped baffle 12. When the rotating shaft 14 drives the fixed sleeve 15 and the rotating rod 17 on the outer side of the fixed block 16 to rotate, the crushing hammer 19 connected by the connecting bolt 18 hammers the rare earth blocks inside the arc-shaped groove 13 under the action of the centrifugal force of high-speed rotation. Since the crushing hammer 19 is rotatably connected to the connecting bolt 18, it avoids the direct hard hammering that causes the rapid damage of the crushing hammer 19. And after damage, the single crushing hammer 19 can be directly disassembled and replaced to reduce costs. The fine rare earth particles after hammering fall from the leakage groove 20 formed at the lower end of the arc-shaped baffle 12 to the lower end for more detailed crushing.

[0037] In addition, the crushing assembly 300 includes a crushing roller 21, a reduction motor 22 and a transmission gear 23. Two groups of crushing rollers 21 are rotatably connected inside the crusher main body 1. The reduction motor 22 is fixedly connected to the outside of the crusher main body 1. The reduction motor 22 is connected to one group of crushing rollers 21 through a coupling. Transmission gears 23 are fixedly connected to the outside of the two groups of crushing rollers 21. The two groups of transmission gears 23 are meshed with each other. After the reduction motor 22 is started, the two groups of crushing rollers 21 are driven to move relatively under the action of the transmission gears 23, so as to crush the rare earth blocks more finely. Since the rare earth is hammered from the upper end and then falls between the two groups of crushing rollers 21, its crushing efficiency is higher, and the phenomenon of the rare earth block being too large and causing tooth jamming and tooth breakage is avoided, which better protects the crushing rollers 21 and extends their service life. The transmission assembly 400 includes a first pulley 24, a second pulley 25 and a transmission belt 26. The first pulley 24 is fixedly connected to the outside of one group of transmission gears 23. The second pulley 25 is fixedly connected to the outside of the rotating shaft 14. The transmission belt 26 is arranged outside the first pulley 24 and the second pulley 25. The diameter of the first pulley 24 is larger than that of the second pulley 25. When the reduction motor 22 is started, the first pulley 24 drives the second pulley 25 to rotate through the transmission belt 26, so that the rotating shaft 14 and the transmission gear 23 rotate synchronously. Since the diameter of the first pulley 24 is larger than that of the second pulley 25, the rotating shaft 14 has a higher speed to generate the centrifugal force for driving the crushing hammer 19.

[0038] Furthermore, the screening assembly 500 includes a vibration frame 28, a sliding groove 29, a screening frame 30, a handle 31, and a material guiding plate 32. The vibration frame 28 is rotatably connected to the outside of the connecting shaft 27. A sliding groove 29 is formed inside the vibration frame 28. The screening frame 30 is slidably connected inside the sliding groove 29. The handle 31 is fixedly connected to the outside of the screening frame 30. The material guiding plate 32 is fixedly connected to the outside of the vibration frame 28. The material guiding plate 32 is located at the upper end of the feeding chute 2. When the rare earth is crushed by the crushing roller 21 and falls onto the upper end of the screening frame 30 inside the vibration frame 28, the particles and powders that do not meet the diameter requirements are screened. The unpassed rare earth particles are guided by the material guiding plate 32 back into the feeding chute 2 and slide downward. Under the action of the feeding assembly 100, they are recycled and crushed again until they meet the requirements. Since the screening frame 30 is slidably connected to the sliding groove 29, different specifications of sieve meshes can be replaced by pulling out the screening frame 30 through the handle 31 according to needs. The screening assembly 500 further includes a double-shaft motor 33, an eccentric wheel disc 34, a connecting rod 35, and a docking shaft 36. The double-shaft motor 33 is fixedly connected to the outside of the crusher main body 1. The eccentric wheel discs 34 are arranged at both ends of the double-shaft motor 33. The connecting rod 35 is rotatably connected to the outside of the eccentric wheel disc 34. The docking shaft 36 is fixedly connected to the outside of the connecting rod 35. The docking shaft 36 is rotatably connected to the vibration frame 28. By driving the eccentric wheel disc 34 to rotate through the double-shaft motor 33, the connecting rod 35 and the docking shaft 36 on its outside drive the connected vibration frame 28 to vibrate up and down at a high frequency, improving the screening efficiency.

[0039] In addition, the output component 600 includes a guide plate 37, an output roller 38, a fixing frame 39, an output motor 40, and a discharge belt 41. A guide plate 37 is fixedly connected inside the crusher main body 1. The guide plate 37 is located at the lower end of the vibration frame 28. A fixing frame 39 is fixedly connected to the outside of the crusher main body 1. Output rollers 38 are rotatably connected inside both the crusher main body 1 and the fixing frame 39. An output motor 40 is fixedly connected to the outside of the crusher main body 1. The output motor 40 is connected to the output roller 38 inside the crusher main body 1 through a coupling. A discharge belt 41 is arranged outside the two output rollers 38. The qualified rare earth particles after screening are guided to the upper end of the discharge belt 41 under the action of the guide plate 37. Then, the output motor 40 is started to drive the output roller 38 to rotate, so that the discharge belt 41 outside conveys the crushed rare earth particles outward. The drying component 700 includes a heating cover 42, a heating pipe 43, a heating control box 44, and a ventilation slot 45. A heating cover 42 is fixedly connected to the upper end of the feeding trough 2. The heating pipe 43 is arranged inside the heating cover 42. A heating control box 44 is fixedly connected to the outside of the heating cover 42. The heating pipe 43 is electrically connected to the heating control box 44. A ventilation slot 45 is opened at the upper end of the heating cover 42. The heating pipe 43 inside the heating cover 42 is controlled by the heating control box 44 to increase the temperature, so as to heat and dry the rare earth blocks in the feeding hopper 8, avoid the adhesion caused by the entry of wet rare earth blocks into the crusher main body 1 for crushing, facilitate the subsequent rapid crushing and the maintenance of the machine, and the arranged ventilation slot 45 can quickly disperse the evaporated moisture to accelerate the drying process.

[0040] When using the rare earth crusher with a screening and cyclic crushing function of the present technical solution, first, the feeding conveyor belt 7 outside the first transmission shaft 5 and the second transmission shaft 6 driven by the arranged conveying motor 4 conveys the rare earth blocks in the feeding trough 2 into the crusher main body 1. The arranged feeding hopper 8 outside is convenient for scraping up the rare earth at the arc bottom of the feeding trough 2. The arranged top protection plate 9 and side protection plate 10 can prevent the rare earth blocks from ejecting from the upper end and the front end of the crusher main body 1 during the crushing process, causing injury to the operator. During this process, the heating pipe 43 inside the heating cover 42 is controlled by the heating control box 44 to increase the temperature, so as to heat and dry the rare earth blocks in the feeding hopper 8, avoid the adhesion caused by the entry of wet rare earth blocks into the crusher main body 1 for crushing, facilitate the subsequent rapid crushing and the maintenance of the machine, and the arranged ventilation slot 45 can quickly disperse the evaporated moisture to accelerate the drying process.

[0041] After starting the reduction motor 22, the first pulley 24 outside the transmission gear 23 drives the second pulley 25 to rotate through the transmission belt 26, causing the rotating shaft 14 to rotate synchronously with the transmission gear 23. Since the diameter of the first pulley 24 is larger than that of the second pulley 25, the rotating shaft 14 has a higher speed to generate a centrifugal force that drives the breaker 19. When the rare earth block enters the inside of the crushing groove 11, it is staggered and distributed at the upper end of the arc-shaped baffle 12 and inside the arc-shaped groove 13, which is convenient for better hammering in the later stage. When the rotating shaft 14 drives the rotating rod 17 outside the fixed sleeve 15 and the fixed block 16 to rotate, the breaker 19 connected by the connecting bolt 18 hammers the rare earth block inside the arc-shaped groove 13 under the action of the centrifugal force generated by high-speed rotation. Since the breaker 19 is rotatably connected to the connecting bolt 18, it avoids directly hard hammering, which causes the breaker 19 to be damaged more quickly. And after damage, the single breaker 19 can be directly disassembled and replaced to reduce costs. The fine rare earth particles after hammering fall from the leakage groove 20 opened at the lower end of the arc-shaped baffle 12 to the lower end. At this time, the two crushing rollers 21 move relative to each other to crush the rare earth block more finely. Since the rare earth is hammered at the upper end and then falls between the two crushing rollers 21, its crushing efficiency is higher, and it avoids phenomena such as the rare earth block being too large and causing tooth jamming and tooth breakage, which better protects the crushing rollers 21 and extends their service life.

[0042] When the rare earth is crushed by the crushing rollers 21 and falls onto the upper end of the screening frame 30 inside the vibrating frame 28, it screens the particle powder that does not meet the diameter requirements. The unqualified rare earth particles are led by the guide plate 32 and imported into the feeding trough 2 again, and slide downward. Under the action of the feeding assembly 100, they are recycled and crushed again until they meet the requirements. Since the screening frame 30 is slidably connected to the sliding groove 29, it can be pulled out according to the needs through the handle 31 to replace the screen with different specifications. At the same time, the double-shaft motor 33 is started to drive the eccentric wheel disc 34 to rotate, and the connecting rod 35 and the docking shaft 36 outside it drive the connected vibrating frame 28 to vibrate up and down at a high frequency, improving the screening efficiency. The qualified rare earth particles after screening are guided to the upper end of the discharge belt 41 under the action of the guide plate 37. Then the output motor 40 is started to drive the output roller 38 to rotate, so that the discharge belt 41 outside it transports the crushed rare earth particles outward.

Claims

1. A rare earth crusher with screening and cyclic crushing function, comprising a crusher body (1); characterized in that: The left end of the crusher body (1) is fixedly connected to a feeding trough (2), the upper end of the crusher body (1) is fixedly connected to a fixing plate (3), a feeding assembly (100) for feeding is arranged between the feeding trough (2) and the fixing plate (3), a crushing trough (11) is arranged inside the crusher body (1), a crushing assembly (200) for crushing larger rare earth blocks is arranged inside the crushing trough (11), and a crushing assembly (300) for fine crushing is arranged inside the crusher body (1). 0), a transmission assembly (400) for transmission is arranged between the crushing assembly (200) and the pulverizing assembly (300), a connecting shaft (27) is fixedly connected inside the crusher body (1), a screening assembly (500) for screening and circulating pulverization is arranged outside the connecting shaft (27), an output assembly (600) for outputting fine materials is arranged at the lower end of the crusher body (1), and a drying assembly (700) for drying rare earth is arranged at the upper end of the feeding assembly (100).

2. The rare earth crusher with screening and cyclic crushing function according to claim 1 is characterized in that: The feeding assembly (100) comprises a conveying motor (4), a first transmission shaft (5), a second transmission shaft (6), a feeding conveyor belt (7) and a feeding hopper (8); the outer side of the fixed plate (3) is fixedly connected to the conveying motor (4); the inner side of the fixed plate (3) is rotatably connected to the first transmission shaft (5); the inner side of the feeding trough (2) is rotatably connected to the second transmission shaft (6); the conveying motor (4) is connected to the first transmission shaft (5) via a coupling; the outer sides of the first transmission shaft (5) and the second transmission shaft (6) are provided with a feeding conveyor belt (7); the outer side of the feeding conveyor belt (7) is fixedly connected to a plurality of feeding hoppers (8).

3. The rare earth crusher with screening and cyclic crushing function according to claim 1, characterized in that: The feeding assembly (100) also includes a top protective plate (9) and a side protective plate (10); the top protective plate (9) is fixedly connected to the upper end of the crusher body (1); the side protective plate (10) is fixedly connected inside the crusher body (1); and the side protective plate (10) is located at the upper end of the crushing trough (11).

4. The rare earth crusher with screening and cyclic crushing function according to claim 1, characterized in that: The crushing assembly (200) comprises an arc-shaped baffle (12), an arc-shaped groove (13), a rotating shaft (14), a fixed sleeve (15) and a fixed block (16); the crushing groove (11) is fixedly connected to the inside of the arc-shaped baffle (12); a plurality of groups of arc-shaped grooves (13) are provided inside the arc-shaped baffle (12); the crusher body (1) is rotatably connected to the inside of the rotating shaft (14); a plurality of groups of fixed sleeves (15) are fixedly connected to the outside of the rotating shaft (14); the positions of the fixed sleeves (15) and the arc-shaped grooves (13) correspond one to one; and a plurality of groups of fixed blocks (16) are fixedly connected to the outside of the fixed sleeve (15).

5. The rare earth crusher with screening and circulating crushing function according to claim 4 is characterized in that: The crushing assembly (200) further comprises a rotating rod (17), a connecting bolt (18), a crushing hammer (19) and a leakage groove (20); the outer side of the fixed block (16) is rotatably connected to the rotating rod (17); a connecting bolt (18) is arranged inside the rotating rod (17); the outer side of the connecting bolt (18) is rotatably connected to the crushing hammer (19); the width of the crushing hammer (19) is slightly smaller than the width of the arc groove (13); and the lower end of the arc baffle (12) is provided with a leakage groove (20).

6. The rare earth crusher with screening and cyclic crushing function according to claim 4, characterized in that: The crushing assembly (300) comprises a crushing roller (21), a reduction motor (22) and a transmission gear (23); two groups of crushing rollers (21) are rotatably connected inside the crusher body (1); a reduction motor (22) is fixedly connected to the outside of the crusher body (1); the reduction motor (22) is connected to a group of crushing rollers (21) via a coupling; the outsides of the two groups of crushing rollers (21) are fixedly connected to the transmission gears (23); and the two groups of transmission gears (23) are meshed with each other.

7. The rare earth crusher with screening and cyclic crushing function according to claim 6, characterized in that: The transmission assembly (400) comprises a first pulley (24), a second pulley (25) and a transmission belt (26); the first pulley (24) is fixedly connected to the outer side of the group of transmission gears (23); the second pulley (25) is fixedly connected to the outer side of the rotating shaft (14); a transmission belt (26) is arranged on the outer sides of the first pulley (24) and the second pulley (25); the diameter of the first pulley (24) is larger than the diameter of the second pulley (25).

8. The rare earth crusher with screening and cyclic crushing function according to claim 1, characterized in that: The screening assembly (500) comprises a vibration frame (28), a sliding groove (29), a screening frame (30), a handle (31) and a material guide plate (32); the outer side of the connecting shaft (27) is rotatably connected to the vibration frame (28); the interior of the vibration frame (28) is provided with a sliding groove (29); the interior of the sliding groove (29) is slidably connected to the screening frame (30); the outer side of the screening frame (30) is fixedly connected to the handle (31); the outer side of the vibration frame (28) is fixedly connected to the material guide plate (32); the material guide plate (32) is located at the upper end of the loading trough (2).

9. The rare earth crusher with screening and cyclic crushing function according to claim 8, characterized in that: The screening assembly (500) further comprises a double-shaft motor (33), an eccentric wheel disc (34), a connecting rod (35) and a docking shaft (36); the double-shaft motor (33) is fixedly connected to the outside of the crusher body (1); eccentric wheels (34) are arranged at both ends of the double-shaft motor (33); the connecting rod (35) is rotatably connected to the outside of the eccentric wheel disc (34); the connecting rod (35) is fixedly connected to the outside of the connecting rod (35); and the docking shaft (36) is rotatably connected to the vibration frame (28).

10. The rare earth crusher with screening and circulating crushing function according to claim 9, characterized in that: The output assembly (600) comprises a guide plate (37), an output roller (38), a fixed frame (39), an output motor (40) and a discharging belt (41); the guide plate (37) is fixedly connected to the inside of the crusher body (1); the guide plate (37) is located at the lower end of the vibration frame (28); the fixed frame (39) is fixedly connected to the outside of the crusher body (1); the output roller (38) is rotatably connected to the inside of the crusher body (1) and the fixed frame (39); the output motor (40) is fixedly connected to the outside of the crusher body (1); the output motor (40) is rotatably connected to the inside of the crusher body (1) and the fixed frame (39); 1) The internal output rollers (38) are connected by a coupling, and a discharge belt (41) is arranged outside the two groups of output rollers (38). The drying component (700) includes a heating cover (42), a heating pipe (43), a heating control box (44) and a ventilation groove (45). The upper end of the upper feeding chute (2) is fixedly connected with the heating cover (42), a heating pipe (43) is arranged inside the heating cover (42), and a heating control box (44) is fixedly connected to the outer side of the heating cover (42). The heating pipe (43) is electrically connected to the heating control box (44), and a ventilation groove (45) is opened at the upper end of the heating cover (42).

Images