Crushing device special for neodymium iron boron

Abstract

The invention relates to the technical field of crushing devices, and discloses a special neodymium iron boron crushing device which comprises a shell, a conveying table is mounted on the inner wall of the shell, and a dustproof shell is fixedly connected to the left side of the shell; according to the neodymium-iron-boron crushing device, when neodymium-iron-boron crushing work is started, neodymium-iron-boron is put into a feeding opening in the top of the shell, then the neodymium-iron-boron is crushed through a crushing roller, the crushed neodymium-iron-boron falls to the top of a second sieve plate, the neodymium-iron-boron falling to the top of a first sieve plate can be shaken and screened, and the neodymium-iron-boron crushing efficiency is improved. According to the neodymium iron boron crushing device, neodymium iron boron which is not crushed thoroughly is conveyed out through the conveying table and then thrown into the device again to be crushed, the neodymium iron boron which is crushed to be qualified falls down through holes of the sieve plate I, and meanwhile, the neodymium iron boron can be screened more finely, so that during subsequent secondary crushing, the neodymium iron boron can be crushed more thoroughly.

Description

Technical Field

[0001] The invention relates to the technical field of pulverizing devices, in particular to a special pulverizing device for NdFeB. Background Art

[0002] There are also some problems with traditional crushing equipment in the NdFeB crushing process. For example, some equipment does not have the pre-crushing function, resulting in low crushing efficiency; some equipment cannot adjust the degree of crushing and cannot meet the requirements of different production processes for the particle size of NdFeB powder; some equipment cannot classify and collect the crushed particles according to size after crushing, and subsequent screening is required, which increases the production process and cost.

[0003] The patent with publication number CN217663538U relates to a crushing device for NdFeB waste, which belongs to the field of NdFeB technology, and comprises a box body, a crushing box is arranged at the inner center of the box body, a feed port is fixedly installed on the top of the box body, a fixed shell is fixedly installed on one side of the box body, a circulation mechanism is arranged inside the fixed shell, and the circulation mechanism comprises a rotating motor, an auger blade shaft, a chassis and a discharge pipe, a rotating motor is fixedly installed on the top of the fixed shell, the output end of the rotating motor is transmission-connected to the auger blade shaft, and the other end of the auger blade shaft is rotationally connected to the chassis; the device The device is equipped with the components of the above-mentioned circulation mechanism and then used in combination, so as to facilitate the circulation and crushing of NdFeB waste, so that the waste can be crushed thoroughly, thereby improving the efficiency and quality of the waste crushing. However, when the device crushes the NdFeB waste, it is easy for the crushing to be incomplete and need to be re-crushed. The crushed NdFeB is mixed with the large pieces of NdFeB that have not been completely crushed. When the crushing is re-performed, manual screening is required, which affects the working efficiency of the NdFeB crushing. Therefore, a special crushing device for NdFeB is proposed to solve the above-mentioned problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a special crushing device for NdFeB in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a special crushing device for NdFeB, comprising a shell, a conveying platform is installed on the inner wall of the shell, and an anti-ash shell is fixedly connected to the left side of the shell; a screening device is arranged at the front of the shell, a cleaning device is arranged on the inner wall of the anti-ash shell, and a flow limiting device is arranged on the inner wall of the anti-ash shell; the screening device comprises a crushing roller, a fixed platform, a motor, a fixed rod 1, a sieve plate 1, a top plate, a sieve plate 2, a reciprocating screw rod, a cam, a baffle, a fixed rod 2, a brush plate, and a connecting rod. The crushing roller is rotatably connected to the inner wall of the shell, the fixed platform is fixedly connected to the front of the shell, the motor is fixedly connected to the top of the fixed platform, the fixed rod 1 is fixedly installed on the inner wall of the shell, the connecting rod is fixedly connected to the inner wall of the shell, the sieve plate 1 is rotatably connected to the circumferential surface of the fixed rod 1, the top plate is fixedly connected to the top of the sieve plate 1, the sieve plate 2 is rotatably connected to the circumferential surface of the connecting rod, the reciprocating screw is fixedly connected to the output end of the motor, the cam is fixedly connected to the circumferential surface of the reciprocating screw, and the baffle is fixedly connected to the outer The inner wall of the shell, the fixed rod 2 is fixedly connected to the inner wall of the conveyor platform, the brush plate is movably connected to the circumferential surface of the reciprocating screw rod, the circumferential surface of the reciprocating screw rod is rotatably connected to the inner wall of the shell, the surface of the cam is in contact with the bottom of the sieve plate 1, the top of the baffle is in contact with the bottom of the sieve plate 1, the top of the top plate is in contact with the bottom of the sieve plate 2, the circumferential surface of the fixed rod 2 is in contact with the inner wall of the brush plate, the top of the brush plate is in contact with the bottom of the sieve plate 1, when the crushing work of the NdFeB starts, NdFeB is put into the feeding port at the top of the shell, and then crushed by the crushing roller. The crushed NdFeB will fall on the top of the sieve plate 2. The NdFeB falling on the top of the sieve plate 1 can be shaken and screened, and the NdFeB that has not been completely crushed can be transported out through the conveyor platform and then put back into the device for crushing. The qualified NdFeB will fall through the holes of the sieve plate 1. At the same time, the NdFeB can be screened more finely, so that it can be crushed more thoroughly during the subsequent secondary crushing.

[0006] Preferably, the cleaning device includes a fixed plate, a rotating plate, a fixed block 1, and a cleaning roller, the fixed plate is fixedly connected to the top of the brush plate, the rotating plate is rotatably connected to the inner wall of the fixed plate, the fixed block 1 is fixedly connected to the bottom of the rotating plate, and the cleaning roller is rotatably connected to the inner wall of the fixed block 1. The cleaning device also includes a transmission wheel, a collection box, and a push plate, the transmission wheel is fixedly connected to the circumferential surface of the cleaning roller, the collection box is fixedly connected to the inner wall of the shell, the push plate is fixedly connected to the top of the brush plate, the circumferential surface of the transmission wheel is in contact with the top of the screen plate 1, and the surface of the push plate is in contact with the collection box The inner walls of the box are in contact with each other. When screening is carried out, the rotation of the transmission wheel drives the cleaning roller to rotate, so that the NdFeB powder blocked in the holes of the sieve plate can be cleared to avoid the long-term accumulation of NdFeB powder, which causes the blockage of the sieve plate, and further affects the screening of NdFeB on the sieve plate. At the same time, the movement of the brush plate drives the movement of the push plate, so that the NdFeB powder fallen into the collection box can be pushed away to avoid excessive accumulation of NdFeB powder in the central part of the collection box, which in turn causes the space utilization rate of the collection box to be reduced, resulting in a decrease in the storage capacity of NdFeB powder, and requiring workers to clean the collection box more frequently, increasing manpower and material resources.

[0007] Preferably, the current limiting device includes a chute plate, a second fixed block, a fixed column, an arc plate, a protrusion, a fixed strip, an elastic telescopic plate, and a limit strip, the chute plate is slidably connected to the inner wall of the dustproof shell, the second fixed block is fixedly connected to the left side of the fixed plate, the fixed column is fixedly connected to the left side of the fixed block, the arc plate is fixedly connected to the left side of the push plate, the protrusion is fixedly connected to the inner wall of the collection box, the fixed strip is fixedly connected to the top of the push plate, the elastic telescopic plate is fixedly connected to the left side of the fixed strip, and the limit strip is fixedly connected to the inner wall of the dustproof shell, the surface of the chute plate is in contact with the inner wall of the limit strip, the circumferential surface of the fixed column is in contact with the inner wall of the chute plate, the telescopic end of the elastic telescopic plate is in contact with the inner wall of the collection box, and the arc plate The left side is in contact with the surface of the conveyor table. When the elastic telescopic plate moves and passes over the protrusion, the elastic telescopic plate is reset, thereby generating knocking vibration on the inner wall of the collection box, causing the NdFeB powder attached to the collection box to fall off, thereby improving the collection rate of the NdFeB powder, and loosening the accumulated NdFeB powder to further improve the capacity to hold the NdFeB powder. At the same time, the movement of the fixed block 2 will squeeze the chute plate, causing the chute plate to move up and down, thereby delaying the discharge speed of the NdFeB that has not been completely crushed, thereby extending the time that the NdFeB stays on the surface of the screen plate 1, and then the NdFeB residue attached to the surface of the NdFeB block can be shaken off and collected, thereby avoiding the NdFeB powder from falling off during transportation during the subsequent re-crushing of the NdFeB and causing waste.

[0008] The present invention adopts the above technical solution to bring the following beneficial effects: 1. The special crushing device for NdFeB operates in coordination with an outer shell, a conveying platform, an anti-ash shell, a crushing roller, a fixed platform, a motor, a fixed rod 1, a sieve plate 1, a top plate, a sieve plate 2, a reciprocating screw, a cam, a baffle, a fixed rod 2, a brush plate, and a connecting rod. When the crushing work of NdFeB starts, the NdFeB is put into the feeding port at the top of the outer shell, and then crushed by the crushing roller. The crushed NdFeB will fall onto the top of the sieve plate 2. The NdFeB falling on the top of the sieve plate 1 can be shaken and screened, and the NdFeB that has not been completely crushed can be transported out through the conveying platform and then put back into the device for crushing. The qualified NdFeB will fall through the holes of the sieve plate 1. At the same time, the NdFeB can be screened more finely, so that it can be crushed more thoroughly during the subsequent secondary crushing.

[0009] 2. The special crushing device for NdFeB operates in coordination with a fixed plate, a rotating plate, a fixed block, a cleaning roller, a transmission wheel, a collection box, and a push plate. When screening, the transmission wheel rotates to drive the cleaning roller to rotate, thereby clearing the NdFeB powder blocked in the holes of the screen plate 1, avoiding long-term accumulation of NdFeB powder, causing blockage of the screen plate 1, and further affecting the screening of NdFeB on the screen plate 1. At the same time, the movement of the brush plate drives the movement of the push plate, thereby dispersing the NdFeB powder that falls into the collection box, avoiding excessive accumulation of NdFeB powder in the central part of the collection box, thereby reducing the space utilization rate of the collection box, reducing the storage capacity of NdFeB powder, and requiring workers to clean the collection box more frequently, increasing manpower and material resources.

[0010] 3. The special crushing device for NdFeB operates through the cooperation among the chute plate, the second fixed block, the fixed column, the arc plate, the protrusion, the fixed bar, the elastic telescopic plate and the limit bar. When the elastic telescopic plate moves and passes over the protrusion, the elastic telescopic plate is reset, thereby generating knocking vibration on the inner wall of the collection box, causing the NdFeB powder attached to the collection box to fall off, thereby improving the collection rate of the NdFeB powder, and loosening the accumulated NdFeB powder to further improve the capacity to accommodate the NdFeB powder. At the same time, the movement of the second fixed block will squeeze the chute plate, causing the chute plate to move up and down, thereby delaying the discharge speed of the NdFeB that has not been completely crushed, so that the time that the NdFeB stays on the surface of the sieve plate can be extended, and then the NdFeB residue attached to the surface of the NdFeB block can be shaken off and collected, thereby avoiding the NdFeB powder from falling off during transportation during the subsequent re-crushing of the NdFeB and causing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A half-section diagram of the screening device of the present invention; Figure 3A half-section view of the top plate structure of the present invention; Figure 4 For the present invention Figure 3 A magnified view of the structure at center; Figure 5 For the present invention Figure 3 A magnified view of the structure at B in the middle; Figure 6 A half-section view of the cleaning device of the present invention; Figure 7 For the present invention Figure 6 A magnified view of the structure at C in the middle; Figure 8 A half-section view of the push plate structure of the present invention; Fig. 9 A half-section diagram of the current limiting device of the present invention; Fig.10 For the present invention Fig. 9 A magnified view of the structure at D in the middle; Fig.11 It is a half-section view of the fixing strip structure of the present invention.

[0012] In the figure: 1. shell; 2. conveying platform; 3. ash-proof shell; 4. screening device; 41. crushing roller; 42. fixed platform; 43. motor; 44. fixed rod one; 45. sieve plate one; 46. top plate; 47. sieve plate two; 48. reciprocating screw rod; 49. cam; 410. baffle; 411. fixed rod two; 412. brush plate; 413. connecting rod; 5. cleaning device; 51. fixed plate; 52. rotating plate; 53. fixed block one; 54. cleaning roller; 55. transmission wheel; 56. collecting box; 57. push plate; 6. current limiting device; 61. chute plate; 62. fixed block two; 63. fixed column; 64. arc plate; 65. convex block; 66. fixed strip; 67. elastic telescopic plate; 68. limit strip. DETAILED DESCRIPTION

[0013] 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.

[0014] See also Figure 1-Figure 11An embodiment of the present invention is: a special crushing device for NdFeB, comprising a shell 1, a conveying platform 2 is installed on the inner wall of the shell 1, and an anti-ash shell 3 is fixedly connected to the left side of the shell 1; a screening device 4 is arranged at the front of the shell 1, a cleaning device 5 is arranged on the inner wall of the anti-ash shell 3, and a flow limiting device 6 is arranged on the inner wall of the anti-ash shell 3; the screening device 4 comprises a crushing roller 41, a fixed platform 42, a motor 43, a fixed rod 1 44, a sieve plate 1 45, a top plate 46, a sieve plate 2 47, a reciprocating screw rod 48, a cam 49, a baffle 410, a fixed rod 2 411, a brush plate 412, and a connecting rod 413, the crushing roller 41 is rotatably connected to the inner wall of the shell 1, the fixed platform 42 is fixedly connected to the front of the shell 1, and the motor 43 The fixing rod 44 is fixedly connected to the top of the fixing platform 42, the fixing rod 44 is fixedly installed on the inner wall of the shell 1, the connecting rod 413 is fixedly connected to the inner wall of the shell 1, the sieve plate 45 rotates on the circumferential surface of the fixing rod 44, the top plate 46 is fixedly connected to the top of the sieve plate 45, the sieve plate 2 47 is rotatably connected to the circumferential surface of the connecting rod 413, the reciprocating screw rod 48 is fixedly connected to the output end of the motor 43, and the cam 49 is fixedly connected to the circumferential surface of the reciprocating screw rod 48. When the NdFeB crushing work starts, the NdFeB is put into the feeding port at the top of the shell 1, and then the NdFeB is crushed by the crushing roller 41. The crushed NdFeB will fall into the top of the sieve plate 2 47, and the motor 43 is started at this time, and the motor 43 starts to drive The reciprocating screw 48 rotates, and the rotation of the reciprocating screw 48 drives the cam 49 to rotate. The rotation of the cam 49 can lift up the screen plate 45. When the cam 49 rotates to the smooth place between the screen plates 45, the screen plate 45 will fall down by gravity, so that the neodymium iron boron falling on the top of the screen plate 45 can be shaken and screened, and the neodymium iron boron that has not been completely crushed can be transported out through the conveying platform 2, and then put back into the device for crushing. The qualified neodymium iron boron will fall through the holes of the screen plate 45. The baffle 410 is fixedly connected to the inner wall of the shell 1, the fixing rod 411 is fixedly connected to the inner wall of the conveying platform 2, and the brush plate 412 is movably connected to the circumferential surface of the reciprocating screw 48. The circumferential surface of the reciprocating screw 48 is connected to the outer The inner wall of the shell 1 is rotatably connected, the surface of the cam 49 contacts the bottom of the sieve plate 45, the top of the baffle 410 contacts the bottom of the sieve plate 45, the top of the top plate 46 contacts the bottom of the sieve plate 47, the circumferential surface of the fixing rod 411 contacts the inner wall of the brush plate 412, the top of the brush plate 412 contacts the bottom of the sieve plate 45, and at the same time, the movement of the sieve plate 45 drives the top plate 46 to move. The movement of the top plate 46 will generate pressure on the sieve plate 47, forcing the sieve plate 47 to rotate slightly. When the top plate 46 moves down, the sieve plate 47 moves down by gravity, so that the neodymium iron boron can be screened more finely, so that the neodymium iron boron can be crushed more thoroughly during the subsequent secondary crushing.

[0015] The cleaning device 5 includes a fixed plate 51, a rotating plate 52, a fixed block 53, and a cleaning roller 54. The fixed plate 51 is fixedly connected to the top of the brush plate 412, the rotating plate 52 is rotatably connected to the inner wall of the fixed plate 51, the fixed block 53 is fixedly connected to the bottom of the rotating plate 52, and the cleaning roller 54 is rotatably connected to the inner wall of the fixed block 53. The cleaning device 5 also includes a transmission wheel 55, a collecting box 56, and a pushing plate 57. The transmission wheel 55 is fixedly connected to the circumferential surface of the cleaning roller 54. When screening, the brush plate 412 moves to drive the fixed plate 51 to move, the fixed plate 51 moves to drive the rotating plate 52 to move, the rotating plate 52 moves to drive the fixed block 53 to move, the rotating plate 52 will automatically adjust according to the rotation angle of the sieve plate 45, the fixed block 53 moves to drive the cleaning roller 54 to move, the cleaning roller 54 moves to drive the transmission wheel 55 to move, and the transmission wheel 55 will contact with the sieve plate 45 during the movement, so that the transmission wheel 55 The driving wheel 55 rotates by the friction force generated between the sieve plate 45 and the driving wheel 55, driving the cleaning roller 54 to rotate, so that the NdFeB powder blocked in the holes of the sieve plate 45 can be cleared to avoid the long-term accumulation of NdFeB powder, resulting in the blockage of the sieve plate 45, and further affecting the screening of NdFeB by the sieve plate 45. The collecting box 56 is fixedly connected to the inner wall of the outer shell 1, and the push plate 57 is fixedly connected to the top of the brush plate 412. The circumferential surface of the driving wheel 55 contacts the top of the sieve plate 45, and the surface of the push plate 57 contacts the inner wall of the collecting box 56. At the same time, the movement of the brush plate 412 drives the push plate 57 to move, so that the NdFeB powder dropped into the collecting box 56 can be pushed away to avoid excessive accumulation of NdFeB powder in the central part of the collecting box 56, thereby reducing the space utilization rate of the collecting box 56, reducing the storage capacity of the NdFeB powder, and requiring workers to clean the collecting box 56 more frequently, increasing manpower and material resources.

[0016] Working principle: When the NdFeB crushing work begins, the NdFeB is put into the feeding port at the top of the shell 1, and then the NdFeB is crushed by the crushing roller 41. The crushed NdFeB will fall on the top of the sieve plate 2 47. At this time, the motor 43 starts, and the motor 43 starts to drive the reciprocating screw 48 to rotate. The reciprocating screw 48 rotates and drives the cam 49 to rotate. The rotation of the cam 49 can lift the sieve plate 1 45. When the cam 49 rotates to the smooth part between the sieve plates 1 45, the sieve plate 1 45 will fall by gravity, so that the material falling on the top of the sieve plate 1 45 can be lifted. The NdFeB is shaken and screened, and the NdFeB that is not completely crushed is transported out through the conveyor platform 2, and then put back into the device for crushing. The qualified NdFeB will fall through the holes of the sieve plate 45, and the movement of the sieve plate 45 drives the top plate 46 to move. The movement of the top plate 46 will generate pressure on the sieve plate 47, forcing the sieve plate 47 to rotate slightly. When the top plate 46 moves down, the sieve plate 47 moves down by gravity, so that the NdFeB can be screened more finely, so that the NdFeB can be crushed more thoroughly during the subsequent secondary crushing.

[0017] When screening is performed, the movement of the brush plate 412 drives the fixed plate 51 to move, the movement of the fixed plate 51 drives the rotating plate 52 to move, the movement of the rotating plate 52 drives the fixed block 53 to move, the rotating plate 52 will automatically adjust according to the rotation angle of the sieve plate 45, the movement of the fixed block 53 drives the cleaning roller 54 to move, the movement of the cleaning roller 54 drives the transmission wheel 55 to move, the transmission wheel 55 will contact the sieve plate 45 during the movement, so that the transmission wheel 55 rotates through the friction force generated between the sieve plate 45, and the rotation of the transmission wheel 55 drives the cleaning roller 54 to rotate, so that In order to clear the NdFeB powder blocked in the holes of the sieve plate 45, the NdFeB powder can be prevented from being accumulated for a long time, causing the sieve plate 45 to be blocked, thereby affecting the screening of NdFeB by the sieve plate 45. At the same time, the movement of the brush plate 412 drives the push plate 57 to move, so that the NdFeB powder dropped into the collection box 56 can be pushed and dispersed, avoiding excessive accumulation of NdFeB powder in the central part of the collection box 56, thereby reducing the space utilization rate of the collection box 56, reducing the storage capacity of the NdFeB powder, and requiring workers to clean the collection box 56 more frequently, increasing manpower and material resources.

[0018] See also Figure 1-Figure 11On the basis of the above embodiment, in another embodiment of the present invention, the current limiting device 6 includes a chute plate 61, a fixed block 62, a fixed column 63, an arc plate 64, a protrusion 65, a fixed strip 66, an elastic telescopic plate 67, and a limit strip 68. The chute plate 61 is slidably connected to the inner wall of the ashproof shell 3, the fixed block 62 is fixedly connected to the left side of the fixed plate 51, the fixed column 63 is fixedly connected to the left side of the fixed block 62, the arc plate 64 is fixedly connected to the left side of the push plate 57, and the protrusion 65 is fixedly connected to the collection box 56. When screening, the push plate 57 moves to drive the fixed bar 66 to move, and the fixed bar 66 moves to drive the elastic expansion plate 67 to move. When the elastic expansion plate 67 moves, it will contact the protrusion 65, so that the elastic expansion plate 67 will be squeezed by the protrusion 65 and then compressed. When the elastic expansion plate 67 moves and passes over the protrusion 65, the elastic expansion plate 67 is reset, so that the inner wall of the collection box 56 can be knocked and vibrated, so that the NdFeB powder attached to the collection box 56 falls off, thereby improving the collection rate of the NdFeB powder, and can also In order to loosen the accumulated NdFeB powder and further improve the capacity of containing NdFeB powder, the fixing strip 66 is fixedly connected to the top of the push plate 57, the elastic telescopic plate 67 is fixedly connected to the left side of the fixing strip 66, the limiting strip 68 is fixedly connected to the inner wall of the anti-ash shell 3, the surface of the inclined slot plate 61 is in contact with the inner wall of the limiting strip 68, the circumferential surface of the fixing column 63 is in contact with the inner wall of the inclined slot plate 61, the telescopic end of the elastic telescopic plate 67 is in contact with the inner wall of the collecting box 56, and the left side of the arc plate 64 is in contact with the inner wall of the conveying platform 2. The surfaces are in contact with each other, and at the same time, the movement of the fixed plate 51 drives the movement of the fixed block 2 62. The movement of the fixed block 2 62 will squeeze the chute plate 61, causing the chute plate 61 to move up and down, thereby delaying the discharge speed of the NdFeB that has not been completely crushed, so that the time that the NdFeB stays on the surface of the sieve plate 45 can be extended, and then the NdFeB residue attached to the surface of the NdFeB block can be shaken off and collected, avoiding the NdFeB powder from falling off during transportation during the subsequent re-crushing of the NdFeB and causing waste.

[0019] Working principle: When screening, the push plate 57 moves to drive the fixed bar 66 to move, and the fixed bar 66 moves to drive the elastic expansion plate 67 to move. When the elastic expansion plate 67 moves, it will contact the bump 65, so that the elastic expansion plate 67 will be squeezed by the bump 65 and then compressed. When the elastic expansion plate 67 moves and passes over the bump 65, the elastic expansion plate 67 is reset, so that the inner wall of the collection box 56 can be knocked and vibrated, so that the NdFeB powder attached to the collection box 56 falls off, thereby improving the collection rate of the NdFeB powder, and the accumulated NdFeB powder can also be sorted. The loose surface further improves the capacity of containing NdFeB powder. At the same time, the movement of the fixed plate 51 drives the movement of the fixed block 2 62. The movement of the fixed block 2 62 will squeeze the chute plate 61, so that the chute plate 61 moves up and down, thereby delaying the discharge speed of the NdFeB that has not been completely crushed, so that the time that the NdFeB stays on the surface of the sieve plate 45 can be extended, and then the NdFeB residue attached to the surface of the NdFeB block can be shaken off and collected, so as to avoid the NdFeB powder falling off during transportation during the subsequent re-crushing of the NdFeB and causing waste.

[0020] The present invention provides a special crushing device for NdFeB. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A special NdFeB pulverizing device, comprising a housing (1), characterized in that: A conveying platform (2) is installed on the inner wall of the outer shell (1), and a dustproof shell (3) is fixedly connected to the left side of the outer shell (1); The front part of the outer shell (1) is provided with a screening device (4), the inner wall of the ash-proof shell (3) is provided with a cleaning device (5), and the inner wall of the ash-proof shell (3) is provided with a flow limiting device (6); The screening device (4) comprises a crushing roller (41), a fixed platform (42), a motor (43), a fixed rod (44), a sieve plate (45), a top plate (46), a sieve plate (47), a reciprocating screw (48), a cam (49), a baffle (410), a fixed rod (411), a brush plate (412), and a connecting rod (413). The crushing roller (41) is rotatably connected to the inner wall of the housing (1), the fixed platform (42) is fixedly connected to the front part of the housing (1), the motor (43) is fixedly connected to the top of the fixed platform (42), the fixed rod (44) is fixedly installed on the inner wall of the housing (1), and the connecting rod (413) is connected to the inner wall of the housing (1). 3) is fixedly connected to the inner wall of the outer shell (1), the sieve plate 1 (45) is rotatable on the circumferential surface of the fixed rod 1 (44), the top plate (46) is fixedly connected to the top of the sieve plate 1 (45), the sieve plate 2 (47) is rotatably connected to the circumferential surface of the connecting rod (413), the reciprocating screw rod (48) is fixedly connected to the output end of the motor (43), the cam (49) is fixedly connected to the circumferential surface of the reciprocating screw rod (48), the baffle plate (410) is fixedly connected to the inner wall of the outer shell (1), the fixed rod 2 (411) is fixedly connected to the inner wall of the conveying platform (2), and the brush plate (412) is movably connected to the circumferential surface of the reciprocating screw rod (48).

2. A special NdFeB pulverizing device according to claim 1, characterized in that: The circumferential surface of the reciprocating screw rod (48) is rotatably connected to the inner wall of the housing (1), the surface of the cam (49) is in contact with the bottom of the sieve plate 1 (45), and the top of the baffle plate (410) is in contact with the bottom of the sieve plate 1 (45).

3. A special NdFeB pulverizing device according to claim 2, characterized in that: The top of the top plate (46) contacts the bottom of the second sieve plate (47), the circumferential surface of the second fixing rod (411) contacts the inner wall of the brush plate (412), and the top of the brush plate (412) contacts the bottom of the first sieve plate (45).

4. A special NdFeB pulverizing device according to claim 3, characterized in that: The cleaning device (5) comprises a fixed plate (51), a rotating plate (52), a fixed block one (53), and a cleaning roller (54); the fixed plate (51) is fixedly connected to the top of the brush plate (412); the rotating plate (52) is rotatably connected to the inner wall of the fixed plate (51); the fixed block one (53) is fixedly connected to the bottom of the rotating plate (52); and the cleaning roller (54) is rotatably connected to the inner wall of the fixed block one (53).

5. A special NdFeB pulverizing device according to claim 4, characterized in that: The cleaning device (5) further comprises a transmission wheel (55), a collection box (56), and a push plate (57); the transmission wheel (55) is fixedly connected to the circumferential surface of the cleaning roller (54); the collection box (56) is fixedly connected to the inner wall of the outer shell (1); and the push plate (57) is fixedly connected to the top of the brush plate (412).

6. A special NdFeB pulverizing device according to claim 5, characterized in that: The circumferential surface of the driving wheel (55) contacts the top of the sieve plate 1 (45), and the surface of the push plate (57) contacts the inner wall of the collecting box (56).

7. A special NdFeB pulverizing device according to claim 6, characterized in that: The current limiting device (6) comprises an inclined slot plate (61), a second fixed block (62), a fixed column (63), an arc plate (64), a protrusion (65), a fixed strip (66), an elastic telescopic plate (67), and a limit strip (68); the inclined slot plate (61) is slidably connected to the inner wall of the dustproof shell (3); the second fixed block (62) is fixedly connected to the left side of the fixed plate (51); the fixed column (63) is fixedly connected to the left side of the second fixed block (62); the arc plate (64) is fixedly connected to the left side of the push plate (57); the protrusion (65) is fixedly connected to the inner wall of the collection box (56); the fixed strip (66) is fixedly connected to the top of the push plate (57); the elastic telescopic plate (67) is fixedly connected to the left side of the fixed strip (66); and the limit strip (68) is fixedly connected to the inner wall of the dustproof shell (3).

8. The NdFeB special pulverizing device according to claim 7, characterized in that: The surface of the chute plate (61) contacts the inner wall of the limit strip (68), the circumferential surface of the fixing column (63) contacts the inner wall of the chute plate (61), the telescopic end of the elastic telescopic plate (67) contacts the inner wall of the collection box (56), and the left side of the arc plate (64) contacts the surface of the conveying platform (2).

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