CN114939524A

CN114939524A - Neodymium-iron-boron powder processing device and method

Info

Publication number: CN114939524A
Application number: CN202210327398.4A
Authority: CN
Inventors: 张震; 韩飞
Original assignee: Anhui Hanhai New Material Co ltd
Current assignee: Anhui Hanhai New Material Co ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-08-26
Anticipated expiration: 2042-03-30
Also published as: CN114939524B

Abstract

The invention discloses a neodymium iron boron powder processing device and method, and belongs to the technical field of powder processing devices. The utility model provides a neodymium iron boron powder processingequipment, is including handling the case, handle fixedly connected with inlet pipe on the case, the terminal fixedly connected with mounting disc of inlet pipe still includes: a screening cylinder consisting of a fine screening filter screen and a coarse screening filter screen; according to the invention, the motor drives the spiral propelling fan to rotate in the sieving cylinder, the driving assembly drives the sieving cylinder to rotate reversely relative to the spiral propelling fan, so that powder in the sieving cylinder rapidly passes through the fine sieving filter screen and the coarse sieving filter screen for filtering, the sieving cylinder drives the sealing cylinder to pump air by using the eccentric ring when rotating, so that the main spray nozzle and the small spray nozzle spray air onto the sieving cylinder to treat the blocked fine sieving filter screen and coarse sieving filter screen, the sieving effect and efficiency are improved, and the guide plate is driven to bump when the sleeve is driven to rotate by the eccentric ring, so that the sieving efficiency and effect of the secondary fine sieving screen are improved.

Description

Neodymium-iron-boron powder processing device and method

Technical Field

The invention relates to the technical field of powder processing devices, in particular to a neodymium iron boron powder processing device and method.

Background

The neodymium-iron-boron magnet can be divided into bonded neodymium-iron-boron and sintered neodymium-iron-boron, wherein bonding is actually injection molding, sintering is vacuum pumping and high-temperature heating molding, and the neodymium-iron-boron magnet is a permanent magnet with the strongest magnetic force at normal temperature (the magnetism is second to that of the holmium magnet at absolute zero degree, but the magnetism is far stronger than that of all known permanent magnets at normal temperature);

need filter the powder when neodymium iron boron permanent magnet processing to this obtains the magnet of good performance, in case sneak into the powder granule that the diameter is not of uniform size in the neodymium iron boron powder of suppression usefulness, the great powder of granule can take place loosely with the combination of surrounding alloy structure when the sintering, and this region just appears the sand hole easily when surely grinding, and the sand hole can lead to the product unqualified.

Disclosure of Invention

The invention aims to solve the problems that once powder particles with different diameters are mixed in neodymium iron boron powder for pressing, the powder with larger particles is loosened with the surrounding alloy structure during sintering, and sand holes are easy to appear in the area during cutting and grinding, so that the product is unqualified.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a neodymium iron boron powder processingequipment, is including handling the case, handle fixedly connected with inlet pipe on the case, the terminal fixedly connected with mounting disc of inlet pipe still includes: the screening cylinder consists of a fine screening filter screen and a coarse screening filter screen, one end of the screening cylinder, which is close to the fine screening filter screen, is rotatably connected in the mounting disc, the treatment box is rotatably connected with a spiral propelling fan, and the spiral propelling fan is rotatably connected in the screening cylinder; the driving assembly is used for driving the sieving cylinder to rotate reversely relative to the spiral propelling fan; an anti-clogging assembly for preventing clogging of the fine and coarse screen screens; the symmetry sets up handle the guide plate of incasement, the guide plate is located screening section of thick bamboo below, the thin screen cloth of fixedly connected with second grade on the guide plate, the thin screen cloth of second grade is located screening section of thick bamboo's below.

Preferably, the treatment box is fixedly connected with a motor, and the output end of the motor is fixedly connected with one end of the spiral propelling fan.

Further, drive assembly includes first sprocket, second sprocket, chain, gear, ring gear, first sprocket fixed connection is in screw propulsion fan one end, handle incasement symmetry fixedly connected with fixed block, rotate between two fixed blocks and be connected with the installation axle, the equal fixed connection of second sprocket, gear is at the installation epaxial, the chain is connected on first sprocket, second sprocket, ring gear fixed connection is on a screening section of thick bamboo, ring gear, gear mesh mutually.

Further, prevent blockking up the subassembly and include main shower nozzle, main shower nozzle is equipped with a plurality ofly, and is a plurality of main shower nozzle all sets up in the treatment box, main shower nozzle is located screening section of thick bamboo top, and gives vent to anger the end and handle bottom of the case face towards screening section of thick bamboo and perpendicular to, it is provided with the pump gas subassembly to handle the incasement for pump gas in to main shower nozzle.

Further, the air pumping assembly comprises a plurality of sealing cylinders, the sealing cylinders are fixedly connected to the treatment box, push rods are slidably connected in the sealing cylinders, and air inlet pipes and air outlet pipes are fixedly connected to the sealing cylinders; further comprising: and one end of the air outlet pipe, which is far away from the sealing cylinder, is fixedly connected with the main air pipe and is communicated with the main air pipe.

In order to facilitate the driving of the sealing cylinder for pumping, further, an eccentric ring is fixedly connected to the screening cylinder, sleeves are fixedly connected to two sides of the eccentric ring, an annular limiting groove is formed in the circumference of each sleeve, and one end, far away from the sealing cylinder, of the push rod is connected to the annular limiting groove in a sliding mode.

In order to improve the screening effect, symmetry fixedly connected with branch road pipe on the main gas pipe, the branch road pipe is in the form of buckling and one end stretches into in the sleeve pipe, the little shower nozzle of fixedly connected with on the branch road pipe, little shower nozzle is given vent to anger and is held towards a screening section of thick bamboo.

In order to improve the efficiency and the effect of guide plate screening, it is further, the guide plate is the middle slope form of bending at both ends, the discharge port has been seted up respectively to the both sides of handling the case, the end of guide plate is through the embedded roll connection of bulb on the discharge port, the front end of guide plate stretches into in the sleeve pipe, a plurality of lugs of circumference fixedly connected with on the sleeve pipe internal diameter, the lug is corresponding with the bottom surface of guide plate front end, handle incasement symmetry fixedly connected with installation piece, fixedly connected with extension spring on the installation piece, the one end fixed connection that the installation piece was kept away from to the extension spring is in the guide plate bottom.

In order to facilitate the treatment of the inside of the treatment box, the treatment box is provided with a box door, and the box door is fixedly connected with a breathable net.

A neodymium iron boron powder processing method mainly comprises the following steps:

s1: pouring neodymium iron boron powder into the sieving cylinder through a feeding pipe, and starting a motor;

s2: the motor drives the spiral propelling fan to rotate in the sieving cylinder, and the sieving cylinder is driven to rotate reversely relative to the spiral propelling fan through the driving assembly, so that powder in the sieving cylinder rapidly passes through the fine sieving filter screen and the coarse sieving filter screen for filtering;

s3: when the screening cylinder rotates, the eccentric ring is used for driving the sealing cylinder to pump air, so that the main spray nozzle and the small spray nozzle spray air to the screening cylinder, the blocked fine screening filter net and the blocked coarse screening filter net are treated, and the screening effect and efficiency are improved;

s4: the neodymium iron boron powder screened by the screening cylinder falls on the guide plate, and the secondary fine screen on the guide plate filters the powder again;

s5: when the eccentric ring drives the sleeve to rotate, the guide plate is driven to bump, and the screening efficiency and the screening effect of the second-level fine screen are improved.

Compared with the prior art, the invention provides a neodymium iron boron powder processing device and method, which have the following beneficial effects:

1. the neodymium iron boron powder processing device comprises a motor, wherein the motor drives a spiral propelling fan to rotate in a sieving cylinder, the powder entering one end of the sieving cylinder is pushed towards a coarse sieving filter screen, when the powder moves from a fine sieving filter screen to the coarse sieving filter screen, the fine sieving filter screen filters fine particles in the powder, the fine particles pass through the fine sieving filter screen and fall on a guide plate below the fine sieving filter screen, the guide plate is obliquely arranged in a processing box, so that the fine particle powder can slide to the lower part of the guide plate after falling on the guide plate and can be filtered again through a secondary fine sieving screen when sliding, the fine powder passes through the secondary fine sieving screen again for secondary filtering, and the coarse particle powder which does not pass through the secondary fine sieving screen is discharged out of the processing box through a discharge port; powder that does not pass the fine screen and divide the filter screen through sieving in a section of thick bamboo can be under the promotion of screw propulsion fan, continue to remove to coarse screen filter screen direction, pass on the guide plate that coarse screen filter screen fell below afterwards, and the lapse on the guide plate that the slope set up, can be mingled with some tiny powder in the powder after being filtered by coarse screen filter screen, the guide plate through coarse screen filter screen below filters it once more, improve the screening effect, the coarse grain powder is gone out through the discharge port, the guide plate below all is provided with collects the box, a powder after being used for collecting the guide plate screening.

2. This neodymium iron boron powder processingequipment drives first sprocket syntropy through the screw propulsion fan, and first sprocket passes through the chain and drives second sprocket syntropy, and it is rotatory to drive the gear engagement ring gear through the installation axle after the second sprocket is rotatory, and the ring gear drives the relative screw propulsion fan reverse rotation of screening section of thick bamboo for powder in the screening section of thick bamboo can rock, improves the efficiency of passing the screening section of thick bamboo.

The parts which are not involved in the device are the same as the parts in the prior art or can be realized by the prior art, the spiral propelling fan is driven by the motor to rotate in the sieving cylinder, the sieving cylinder is driven by the driving component to rotate reversely relative to the spiral propelling fan, so that powder in the sieving cylinder rapidly passes through the fine sieving filter screen and the coarse sieving filter screen for filtering, when the sieving cylinder rotates, the eccentric ring is used for driving the sealing cylinder to pump air, the main spray nozzle and the small spray nozzle spray air onto the sieving cylinder, the blocked fine sieving filter screen and the blocked coarse sieving filter screen are treated, the sieving effect and efficiency are improved, when the sleeve is driven by the eccentric ring to rotate, the guide plate is driven to bump, and the sieving efficiency and effect of the secondary fine sieving screen are improved.

Drawings

Fig. 1 is a schematic structural diagram of a neodymium iron boron powder processing device provided by the invention;

fig. 2 is a schematic structural diagram of a in fig. 1 of a neodymium iron boron powder processing apparatus according to the present invention;

fig. 3 is a schematic structural diagram of a neodymium iron boron powder processing device according to the present invention;

fig. 4 is a schematic structural diagram of an eccentric ring and a sleeve of the neodymium iron boron powder processing device provided by the invention;

fig. 5 is a schematic structural diagram of an annular limiting groove of the neodymium iron boron powder processing device provided by the invention;

fig. 6 is a schematic structural diagram of a bump of a neodymium iron boron powder processing apparatus according to the present invention;

fig. 7 is a schematic structural diagram of a guide plate and a secondary fine screen of a neodymium iron boron powder processing device provided by the invention.

In the figure: 1. a treatment tank; 10. a box door; 11. a feed hopper; 12. a feed pipe; 13. mounting a disc; 2. a screening drum; 21. fine screening a filter screen; 22. roughly screening a filter screen; 23. a sleeve; 230. an eccentric ring; 24. an annular limiting groove; 25. a sealing cylinder; 26. a push rod; 27. an air inlet pipe; 28. an air outlet pipe; 29. a main air pipe; 291. a main spray head; 292. a branch pipe; 293. a small nozzle; 3. a motor; 31. a screw propulsion fan; 32. a first sprocket; 33. a fixed block; 34. installing a shaft; 35. a second sprocket; 36. a chain; 37. a gear; 38. a ring gear; 4. mounting a block; 40. a bump; 41. a tension spring; 42. a baffle; 43. a second-stage fine screen; 44. and (7) discharging the air.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-7, a neodymium iron boron powder processingequipment, including handling case 1, handle fixedly connected with inlet pipe 12 on the case 1, the terminal fixedly connected with mounting disc 13 of inlet pipe 12 still includes: the screening cylinder 2 consists of a fine screening filter screen 21 and a coarse screening filter screen 22, one end, close to the fine screening filter screen 21, of the screening cylinder 2 is rotatably connected into the mounting disc 13, the treatment box 1 is rotatably connected with a spiral propulsion fan 31, and the spiral propulsion fan 31 is rotatably connected into the screening cylinder 2; a driving assembly for driving the sieving cylinder 2 to rotate reversely relative to the spiral propelling fan 31; an anti-clogging assembly for preventing clogging of the fine sieve screen 21 and the coarse sieve screen 22; the guide plates 42 are symmetrically arranged in the treatment box 1, the guide plates 42 are positioned below the sieving cylinder 2, the guide plates 42 are fixedly connected with a secondary fine screen 43, and the secondary fine screen 43 is positioned below the sieving cylinder 2; the treatment box 1 is fixedly connected with a motor 3, and the output end of the motor 3 is fixedly connected with one end of a spiral propelling fan 31; the driving assembly comprises a first chain wheel 32, a second chain wheel 35, a chain 36, a gear 37 and a gear ring 38, the first chain wheel 32 is fixedly connected to one end of the spiral propelling fan 31, the treatment box 1 is internally and symmetrically and fixedly connected with fixing blocks 33, a mounting shaft 34 is rotatably connected between the two fixing blocks 33, the second chain wheel 35 and the gear 37 are both fixedly connected to the mounting shaft 34, the chain 36 is connected to the first chain wheel 32 and the second chain wheel 35, the gear ring 38 is fixedly connected to the sieving cylinder 2, and the gear ring 38 and the gear 37 are meshed; the anti-blocking assembly comprises a plurality of main spray heads 291, the main spray heads 291 are arranged in the treatment box 1, the main spray heads 291 are positioned above the sieving cylinder 2, the air outlet end faces the sieving cylinder 2 and is perpendicular to the bottom surface of the treatment box 1, and an air pumping assembly is arranged in the treatment box 1 and used for pumping air into the main spray heads 291; the air pumping assembly comprises a plurality of sealing cylinders 25, the sealing cylinders 25 are fixedly connected to the treatment box 1, push rods 26 are connected in the sealing cylinders 25 in a sliding mode, air inlet pipes 27 and air outlet pipes 28 are fixedly connected to the sealing cylinders 25, and one-way valves are arranged on the air inlet pipes 27 and the air outlet pipes 28; further comprising: one end of the air outlet pipe 28, which is far away from the sealing cylinder 25, is fixedly connected with the main air pipe 29 and is communicated with the main air pipe 29; an eccentric ring 230 is fixedly connected to the screening barrel 2, sleeves 23 are fixedly connected to two sides of the eccentric ring 230, annular limiting grooves 24 are formed in the circumferences of the sleeves 23, and one end, far away from the sealing barrel 25, of the push rod 26 is connected to the annular limiting grooves 24 in a sliding mode; the flow guide plate 42 is bent at two ends and inclined in the middle, the two sides of the treatment box 1 are respectively provided with a discharge port 44, the tail end of the flow guide plate 42 is embedded into the discharge port 44 through a ball head and is connected to the discharge port 44 in a rolling manner, the front end of the flow guide plate 42 extends into the sleeve 23, the inner diameter of the sleeve 23 is fixedly connected with a plurality of convex blocks 40 on the circumference, the convex blocks 40 correspond to the bottom surface of the front end of the flow guide plate 42, the treatment box 1 is internally and symmetrically and fixedly connected with the installation blocks 4, the installation blocks 4 are fixedly connected with tension springs 41, and one ends of the tension springs 41 far away from the installation blocks 4 are fixedly connected to the bottom of the flow guide plate 42;

when the device is used, neodymium iron boron powder (hereinafter referred to as powder) is poured into the device through a feeding funnel 11 fixedly connected to the top end of a feeding pipe 12, the powder sequentially enters a mounting disc 13 through the feeding pipe 12, one side of the mounting disc 13 is in an open shape, and a screening cylinder 2 is rotatably connected into the opening;

by starting the motor 3, the motor 3 drives the spiral propelling fan 31 to rotate in the sieving cylinder 2, the powder entering one end of the sieving cylinder 2 is pushed towards the coarse sieving filter screen 22, when the powder moves from the fine screening filter screen 21 to the coarse screening filter screen 22, the fine screening filter screen 21 filters fine particles in the powder, the fine particles pass through the fine screening filter screen 21 and fall on the guide plate 42 below the fine screening filter screen 21, since the baffle plate 42 is disposed in the treatment tank 1 in an inclined shape, the fine powder particles falling on the baffle plate 42 slide toward the lower portion of the baffle plate 42, and filtered again by the secondary fine mesh 43 while sliding, the fine powder is filtered again by passing through the secondary fine mesh 43, and the coarse powder not passing through the secondary fine mesh 43 is discharged outside the treatment tank 1 through the discharge port 44 (a collection tank is disposed at the discharge port 44 for collecting the discharged powder);

the powder which does not pass through the fine screening filter screen 21 in the screening cylinder 2 continuously moves towards the coarse screening filter screen 22 under the pushing of the spiral propelling fan 31, then passes through the coarse screening filter screen 22 and falls on the guide plate 42 below, and slides downwards on the guide plate 42 which is obliquely arranged, part of fine powder is mixed in the powder filtered by the coarse screening filter screen 22, the fine powder is filtered again through the guide plate 42 below the coarse screening filter screen 22, the screening effect is improved, the coarse particle powder goes out through the discharge port 44, and the collecting boxes are arranged below the guide plate 42 and used for collecting the powder screened by the guide plate 42;

meanwhile, the spiral propelling fan 31 drives the first chain wheel 32 to rotate in the same direction, the first chain wheel 32 drives the second chain wheel 35 to rotate in the same direction through the chain 36, the second chain wheel 35 drives the gear 37 to be meshed with the gear ring 38 to rotate through the mounting shaft 34 after rotating, and the gear ring 38 drives the sieving cylinder 2 to rotate in the opposite direction relative to the spiral propelling fan 31, so that powder in the sieving cylinder 2 can shake, and the efficiency of penetrating through the sieving cylinder 2 is improved;

when the screening cylinder 2 rotates, the eccentric ring 230 eccentrically arranged on the screening cylinder 2 drives the push rod 26 to slide in the sealing cylinder 25 in a reciprocating manner, so that the sealing cylinder 25 realizes a pumping action, the push rod 26 is pulled, the air inlet pipe 27 is used for introducing air into the sealing cylinder 25 and pushed by the push rod 26 to extrude the air in the sealing cylinder 25, the air enters the main air pipe 29 through the air outlet pipe 28 and is blown to the outer wall of the screening cylinder 2 by the air sprayed by the main nozzle 291, after being blown to the outer wall of the screening cylinder 2, part of powder blocked on the fine screening filter screen 21 and the coarse screening filter screen 22 is blown off, and the powder is blown back to the screening cylinder 2 again for screening and filtering, so that the screening efficiency is improved, four sealing cylinders 25 are arranged, and the number of the annular limiting grooves 24 is the same as that of the sealing cylinder 25;

because eccentric ring 230 is eccentric fixed connection on screening section of thick bamboo 2, so, the interval between the circumference inner wall of sleeve pipe 23 and the outer wall of screening section of thick bamboo 2 is different, after screening section of thick bamboo 2 is rotatory, can drive one end and stretch into the guide plate 42 up-and-down motion in screening section of thick bamboo 2, make a round trip jack-up (the distribution of projection 40 circumference has at least 8) to guide plate 42 through lug 40 on the sleeve pipe 23 inner wall simultaneously, and through the drop-down of extension spring 41, make guide plate 42 take place to jolt from top to bottom, the guide plate 42 of jolting can improve the screening efficiency of guide plate 42 to the powder that falls on second grade fine screen 43, and prevent effectively that part tiny powder from discharging from discharge port 44 and handling the case 1 outward, and then improve the screening effect.

Example 2:

referring to fig. 1 and 2, substantially the same as in embodiment 1, further: branch pipes 292 are symmetrically and fixedly connected to the main air pipe 29, the branch pipes 292 are bent, one ends of the branch pipes 292 extend into the sleeve 23, small spray nozzles 293 are fixedly connected to the branch pipes 292, and air outlet ends of the small spray nozzles 293 face the screening drum 2;

because the sleeve 23 of eccentric ring 230 both sides has sheltered part fine screen sieve 21 and coarse screening filter screen 22, through stretching into sleeve 23 branch pipe 292 to carry out the gas injection through little shower nozzle 293 to the part fine screen sieve 21 that is sheltered and coarse screening filter screen 22, prevent to take place to block up, effectively improve screening effect and efficiency.

Example 3:

referring to fig. 3, substantially the same as in embodiment 2, further: a box door 10 is arranged on the treatment box 1, and a ventilation net is fixedly connected to the box door 10;

open chamber door 10 and be convenient for handle in handling case 1, sealed section of thick bamboo 25 extraction simultaneously handles the case 1 outer gas jet advance handle case 1 in, can avoid piling up in handling case 1 with gas discharge through ventilative net, improve the circulation of handling incasement 1 internal gas, and then improve efficiency and the effect of screening the powder.

Example 4:

referring to fig. 1 to 7, a method for processing neodymium iron boron powder mainly includes the following steps:

s1: neodymium iron boron powder is poured into the sieving cylinder 2 through a feeding pipe 12, and the motor 3 is started;

s2: the motor 3 drives the spiral propelling fan 31 to rotate in the sieving cylinder 2, and drives the sieving cylinder 2 to rotate reversely relative to the spiral propelling fan 31 through the driving component, so that the powder in the sieving cylinder 2 rapidly passes through the fine sieving filter screen 21 and the coarse sieving filter screen 22 for filtering;

s3: when the screening cylinder 2 rotates, the eccentric ring 230 is used for driving the sealing cylinder 25 to pump air, so that the main spray nozzle 291 and the small spray nozzle 293 spray air to the screening cylinder 2, the blocked fine screening filter screen 21 and the blocked coarse screening filter screen 22 are treated, and the screening effect and efficiency are improved;

s4: the neodymium iron boron powder screened by the screening cylinder 2 falls on the guide plate 42, and the secondary fine screen 43 on the guide plate 42 filters the powder again;

s5: when the eccentric ring 230 drives the sleeve 23 to rotate, the guide plate 42 is driven to bump, and the screening efficiency and effect of the secondary fine screen 43 are improved.

According to the invention, the motor 3 drives the spiral propelling fan 31 to rotate in the screening cylinder 2, the driving component drives the screening cylinder 2 to rotate reversely relative to the spiral propelling fan 31, so that powder in the screening cylinder 2 rapidly passes through the fine screening filter screen 21 and the coarse screening filter screen 22 for filtration, when the screening cylinder 2 rotates, the eccentric ring 230 is used for driving the sealing cylinder 25 to pump air, so that the main spray head 291 and the small spray head 293 spray air onto the screening cylinder 2, the blocked fine screening filter screen 21 and the blocked coarse screening filter screen 22 are treated, the screening effect and efficiency are improved, when the eccentric ring 230 drives the sleeve 23 to rotate, the guide plate 42 is driven to bump, the screening efficiency and effect of the secondary fine screening screen 43 are improved, the powder is finely screened, and the product quality is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a neodymium iron boron powder processingequipment, is including handling case (1), its characterized in that, fixedly connected with inlet pipe (12) on handling case (1), inlet pipe (12) terminal fixedly connected with mounting disc (13) still include:

the screening cylinder (2) is composed of a fine screening filter screen (21) and a coarse screening filter screen (22), one end, close to the fine screening filter screen (21), of the screening cylinder (2) is rotatably connected into the mounting disc (13), the treatment box (1) is rotatably connected with a spiral propulsion fan (31), and the spiral propulsion fan (31) is rotatably connected into the screening cylinder (2);

a drive assembly for driving the sifting cylinder (2) to rotate in reverse relative to the screw propulsion fan (31);

an anti-clogging assembly for preventing clogging of the fine screen (21) and coarse screen (22);

the symmetry sets up guide plate (42) in handling case (1), guide plate (42) are located screening section of thick bamboo (2) below, fixedly connected with second grade fine mesh (43) on guide plate (42), second grade fine mesh (43) are located the below of screening section of thick bamboo (2).

2. The neodymium iron boron powder processing device according to claim 1, characterized in that a motor (3) is fixedly connected to the processing box (1), and an output end of the motor (3) is fixedly connected with one end of a spiral propelling fan (31).

3. The neodymium iron boron powder processingequipment of claim 2, characterized in that, drive assembly includes first sprocket (32), second sprocket (35), chain (36), gear (37), ring gear (38), first sprocket (32) fixed connection is in screw propulsion fan (31) one end, handle case (1) interior symmetry fixedly connected with fixed block (33), rotate between two fixed blocks (33) and be connected with installation axle (34), the equal fixed connection of second sprocket (35), gear (37) is on installation axle (34), chain (36) are connected on first sprocket (32), second sprocket (35), ring gear (38) fixed connection is on screening section of thick bamboo (2), ring gear (38), gear (37) mesh mutually.

4. A neodymium iron boron powder processingequipment according to claim 3, characterized in that prevent stifled subassembly includes main shower nozzle (291), main shower nozzle (291) is equipped with a plurality ofly, a plurality ofly main shower nozzle (291) all sets up in handling case (1), main shower nozzle (291) is located screening section of thick bamboo (2) top, and gives vent to anger the end and face screening section of thick bamboo (2) and be perpendicular to and handle case (1) bottom surface, be provided with the pump gas subassembly in handling case (1) for pump gas to main shower nozzle (291) interior.

5. A neodymium iron boron powder processing device according to claim 4, characterized in that the pump gas assembly comprises a plurality of sealing cylinders (25), the sealing cylinders (25) are fixedly connected to the processing box (1), push rods (26) are slidably connected in the sealing cylinders (25), and air inlet pipes (27) and air outlet pipes (28) are fixedly connected to the sealing cylinders (25);

further comprising: and one end of the air outlet pipe (28) far away from the sealing cylinder (25) is fixedly connected with the main air pipe (29) and is communicated with the main air pipe (29).

6. The neodymium iron boron powder processing device according to claim 5, characterized in that an eccentric ring (230) is fixedly connected to the sieving barrel (2), sleeves (23) are fixedly connected to both sides of the eccentric ring (230), an annular limiting groove (24) is formed in the upper circumference of each sleeve (23), and one end, far away from the sealing barrel (25), of the push rod (26) is slidably connected to the annular limiting groove (24).

7. The neodymium-iron-boron powder processing device according to claim 6, characterized in that a branch pipe (292) is symmetrically and fixedly connected to the main air pipe (29), the branch pipe (292) is bent, one end of the branch pipe extends into the sleeve (23), a small nozzle (293) is fixedly connected to the branch pipe (292), and the air outlet end of the small nozzle (293) faces the sieving barrel (2).

8. The neodymium iron boron powder processing device according to claim 7, characterized in that guide plate (42) is bent at two ends and is inclined in the middle, discharge ports (44) are respectively formed in two sides of processing box (1), the tail end of guide plate (42) is connected to discharge ports (44) through ball head embedded rolling, the front end of guide plate (42) extends into sleeve (23), a plurality of convex blocks (40) are fixedly connected to the inner diameter of sleeve (23) in a circumferential mode, the convex blocks (40) correspond to the bottom surface of the front end of guide plate (42), mounting blocks (4) are fixedly connected to the processing box (1) in an internal symmetry mode, tension springs (41) are fixedly connected to the mounting blocks (4), and one ends, far away from the mounting blocks (4), of the tension springs (41) are fixedly connected to the bottom of guide plate (42).

9. The neodymium iron boron powder processing device according to claim 7, characterized in that a box door (10) is installed on the processing box (1), and a ventilation net is fixedly connected to the box door (10).

10. A neodymium iron boron powder processing method comprises the neodymium iron boron powder processing device of claim 8, and is characterized by mainly comprising the following steps of:

s1: neodymium iron boron powder is poured into the screening cylinder (2) through a feeding pipe (12), and a motor (3) is started;

s2: the motor (3) drives the spiral propelling fan (31) to rotate in the screening cylinder (2), and drives the screening cylinder (2) to rotate reversely relative to the spiral propelling fan (31) through the driving assembly, so that powder in the screening cylinder (2) rapidly passes through the fine screening filter screen (21) and the coarse screening filter screen (22) for filtering;

s3: when the screening cylinder (2) rotates, the eccentric ring (230) is used for driving the sealing cylinder (25) to pump air, so that the main spray nozzle (291) and the small spray nozzle (293) spray air onto the screening cylinder (2), and the blocked fine screening filter screen (21) and the blocked coarse screening filter screen (22) are treated;

s4: the neodymium iron boron powder screened by the screening cylinder (2) falls on the guide plate (42), and the secondary fine screen (43) on the guide plate (42) filters the powder again;

s5: when the eccentric ring (230) drives the sleeve (23) to rotate, the guide plate (42) is driven to bump, so that the neodymium iron boron powder rapidly passes through the second-level fine screen (43), and the sieving of the neodymium iron boron powder is completed.