Device for recovering praseodymium neodymium oxide from neodymium iron boron waste

Abstract

The device comprises a device body, an inner cavity, a feeding hopper, a net plate, a pushing air cylinder, a discharging port and a liquid outlet pipe, a liquid distribution cavity is formed in the top of the inner cavity, the liquid distribution cavity and the inner cavity are separated through a partition plate, the feeding hopper is arranged on the side wall of the upper end of the inner cavity, and the net plate is arranged on the side wall of the lower end of the inner cavity. One side of the supporting block is hinged to the net plate through a hinge, the other side of the supporting block is connected with the bottom of the net plate through a tension spring, the discharging port is formed in the side wall of the inner cavity and the same side of the hinge, a side installation frame is arranged on the outer side of the discharging port, and a material blocking air cylinder is installed outside the side installation frame; by arranging the screen plate and the material pushing air cylinder structure, neodymium iron boron waste materials on the screen plate can be pushed up and down, the waste materials collide with the protruding blocks on the lower side of the partition plate, the material dispersing effect is achieved, coatings on the outer surfaces of the waste materials fully react with soaking liquid, the coatings are cleaned, the cleaned raw materials are conveyed to the next station from the discharging port, and praseodymium neodymium oxide is recycled; and the soaking liquid is discharged from the liquid outlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of NdFeB waste recovery devices, in particular to a device for recovering praseodymium-neodymium oxide from NdFeB waste materials. Background Art

[0002] Neodymium magnets, also known as NdFeB magnets, are tetragonal crystals formed by neodymium, iron, and boron. Neodymium magnets were discovered in 1982. The magnetic energy product of this magnet is greater than that of samarium cobalt magnets, and it was the material with the largest magnetic energy product in the world at that time. Later, Sumitomo Special Metals successfully developed powder metallurgy, and General Motors successfully developed the rotary spray melting method, which can produce NdFeB magnets. This magnet is the permanent magnet with magnetic properties second only to absolute zero holmium magnets today, and is also the most commonly used rare earth magnet. NdFeB magnets are widely used in electronic products, such as hard drives, mobile phones, headphones, and battery-powered tools. In the process of production and cutting of NdFeB magnets, a large amount of cutting edges and qualified waste materials will appear. These recycled materials need to be cleaned of the surface coating before subsequent processing during the recycling process, so as to better recover the praseodymium and neodymium inside.

[0003] Since NdFeB waste has strong magnetism, it is easy to be adsorbed together during recycling, resulting in that the surface coating is not easy to clean, and impurities may be wrapped in the middle. In order to solve the above problems, the utility model provides a solution. Utility Model Content

[0004] The utility model aims to provide a device for recovering praseodymium-neodymium oxide from NdFeB waste.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A device for recovering praseodymium-neodymium oxide from NdFeB waste, comprising a device body, an inner cavity, a feed hopper, a mesh plate, a push cylinder, a discharge port and a liquid discharge pipe, wherein a liquid distribution cavity is arranged at the top of the inner cavity, the liquid distribution cavity is separated from the inner cavity by a partition plate, a plurality of evenly distributed liquid spray holes are arranged on the partition plate, a liquid inlet joint is arranged on the side wall of the liquid distribution cavity, the feed hopper is arranged on the upper end side wall of the inner cavity, the push cylinder is installed on a bottom mounting frame at the bottom of the device body, a piston rod of the push cylinder extends into the inner cavity, a support block is installed on the top of the piston rod, one side of the support block is connected to the mesh plate by a The hinge is hinged, and the other side of the support block is connected to the bottom of the mesh plate through a tension spring. The discharge port is arranged on the same side of the inner cavity side wall as the hinge, and a guide wedge protruding into the inner cavity is provided below the discharge port. A side mounting frame is provided on the outer side of the discharge port, and a blocking cylinder is installed on the outside of the side mounting frame. A blocking block for blocking the discharge port is installed on the end of the piston rod of the blocking cylinder. The inner cavity is also provided with a resist block, and the resist block and the guide wedge block are arranged on two opposite sides of the inner cavity, and the resist block is located obliquely above the guide wedge block. The liquid outlet pipe is arranged on the bottom side wall of the inner cavity, and a valve is installed on the liquid outlet pipe.

[0007] Furthermore, a plurality of evenly distributed protrusions are provided at the bottom of the partition, and the protrusions are spaced apart from the liquid spraying holes.

[0008] Furthermore, the discharge port is arranged in a conical structure, and the structure of the blocking block is adapted to the discharge port.

[0009] Furthermore, the distance from the material guiding wedge to the bottom of the inner cavity is one fifth of the total height of the inner cavity.

[0010] Furthermore, a sealing ring is provided at the contact position between the bottom of the device body and the piston rod of the pushing cylinder.

[0011] Furthermore, the shape of the protrusion is a sawtooth structure.

[0012] Furthermore, the valve is a solenoid valve.

[0013] In summary, the utility model has the following beneficial effects: the utility model can push the NdFeB waste on the mesh plate up and down by setting the mesh plate and the pushing cylinder structure, so that the waste material collides with the protrusion on the lower side of the partition plate to achieve the effect of dispersing the material, so that the coating on the surface of the waste material reacts fully with the soaking liquid, the coating is cleaned, and the cleaned raw materials are sent to the next workstation from the discharge port to recover the praseodymium neodymium oxide, and the soaking liquid is discharged from the liquid outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the utility model during material cutting.

[0016] In the figure, 1. device body; 2. inner cavity; 3. feed hopper; 4. mesh plate; 5. push cylinder; 6. support block; 7. hinge; 8. discharge port; 9. blocking block; 10. side mounting frame; 11. blocking cylinder; 12. guide wedge block; 13. liquid inlet joint; 14. liquid distribution cavity; 15. liquid spray hole; 16. partition; 17. bump; 18. bottom mounting frame; 19. piston rod; 20. stop block; 21. liquid discharge pipe; 22. valve; 23. sealing ring. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1-2 As shown, a device for recovering praseodymium and neodymium oxide from NdFeB waste includes a device body 1, an inner cavity 2, a feed hopper 3, a mesh plate 4, a push cylinder 5, a discharge port 8 and a liquid outlet pipe 21. A liquid distribution cavity 14 is provided on the top of the inner cavity 2. The liquid distribution cavity 14 is separated from the inner cavity 2 by a partition 16. The partition 16 is provided with a plurality of evenly distributed liquid spray holes 15. A liquid inlet joint 13 is provided on the side wall of the liquid distribution cavity 14. Soaking liquid is connected from the liquid inlet joint 13. The soaking liquid reacts with the coating on the surface of the NdFeB waste to dissolve the coating, thereby achieving the effect of cleaning the surface of the waste. The feed hopper 3 is arranged on the upper side wall of the inner cavity 2. The push cylinder 5 is installed on a bottom mounting frame 18 at the bottom of the device body 1. The piston rod 19 of the push cylinder 5 extends into the inner cavity 2. The top of the piston rod 19 is arranged A support block 6 is installed, one side of the support block 6 is hinged to the mesh plate 4 by a hinge 7, and the other side of the support block 6 is connected to the bottom of the mesh plate 4 by a tension spring. The discharge port 8 is arranged on the same side of the side wall of the inner cavity 2 as the hinge 7, and a guide wedge 12 protruding toward the inner cavity 2 is arranged below the discharge port 8, and a side mounting frame 10 is arranged on the outside of the discharge port 8, and a blocking cylinder 11 is installed on the outside of the side mounting frame 10, and a blocking block 9 for blocking the discharge port is installed at the end of the piston rod of the blocking cylinder 11. The inner cavity 2 is also provided with a stopper 20, and the stopper 20 and the guide wedge 12 are arranged on the opposite sides of the inner cavity 2, and the stopper 20 is located obliquely above the guide wedge 12, and the liquid outlet pipe 21 is arranged on the bottom side wall of the inner cavity 2, and a valve 22 is installed on the liquid outlet pipe 21; when the partition 16 moves down to such Figure 2 As shown, the partition 16 will be tilted, and the material will move down along the mesh plate and be discharged from the discharge port 8.

[0019] Furthermore, a plurality of evenly distributed protrusions 17 are provided at the bottom of the partition 16. The protrusions 17 are spaced apart from the liquid spraying holes 15. When the protrusions 17 collide with the material, the material can be effectively crushed, so that the material contacts the soaking liquid, thereby improving the reaction efficiency.

[0020] Furthermore, the discharge port 8 is provided with a conical structure, the structure of the blocking block 9 is adapted to the discharge port 8, and the blocking cylinder 11 drives the blocking block 9 to seal the discharge port 8, and drives the blocking block 9 to move outwards during discharge.

[0021] Furthermore, the distance from the guide wedge 12 to the bottom of the inner cavity 2 is one fifth of the total height of the inner cavity 2, thereby ensuring that a portion of space is reserved at the bottom of the inner cavity 2 for storing the soaking liquid.

[0022] Furthermore, a sealing ring 23 is provided at the contact position between the bottom of the device body 1 and the piston rod 19 of the push cylinder 5, and the sealing ring 23 mainly ensures the sealing performance of the contact position.

[0023] Furthermore, the protrusion 17 has a sawtooth structure in appearance, so as to achieve a better material dispersing effect after colliding with the material.

[0024] Furthermore, the valve 22 is a solenoid valve, and the discharge of the liquid after the reaction is controlled by controlling the valve 22 .

[0025] Working principle: NdFeB waste enters the inner cavity 2 of the device body 1 from the feed hopper 3, the soaking liquid enters the liquid distribution cavity 14 from the liquid inlet joint 13, and then enters the inner cavity 2 through the spray hole 15 to contact and react with the NdFeB waste, and the pushing cylinder 5 drives the mesh plate 4 and the NdFeB material thereon to move up and down, so that it collides with the protrusion 17 to achieve the effect of dispersing the material. When the mesh plate 4 moves down, it does not contact the stop block 20. When the reaction is completed, the mesh plate 4 moves down, and the mesh plate 4 first contacts the stop block 20, causing the mesh plate 4 to tilt, and the cleaned material slides down, is discharged from the discharge port and sent to the next workstation for subsequent recovery of praseodymium neodymium oxide, and the soaking liquid is discharged from the liquid outlet pipe.

[0026] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as the modifications are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A device for recovering praseodymium-neodymium oxide from NdFeB waste, characterized in that: The invention comprises a device body (1), an inner cavity (2), a feed hopper (3), a mesh plate (4), a push cylinder (5), a discharge port (8) and a liquid discharge pipe (21), wherein a liquid distribution cavity (14) is provided at the top of the inner cavity (2), the liquid distribution cavity (14) is separated from the inner cavity (2) by a partition (16), the partition (16) is provided with a plurality of evenly distributed liquid spray holes (15), a side wall of the liquid distribution cavity (14) is provided with a liquid inlet joint (13), the feed hopper (3) is arranged on the upper side wall of the inner cavity (2), the push cylinder (5) is installed on a bottom mounting frame (18) at the bottom of the device body (1), a piston rod (19) of the push cylinder (5) extends into the inner cavity (2), and a support is installed at the top of the piston rod (19). A support block (6), one side of the support block (6) is hinged to the mesh plate (4) through a hinge (7), and the other side of the support block (6) is connected to the bottom of the mesh plate (4) through a tension spring. The discharge port (8) is arranged on the same side of the side wall of the inner cavity (2) as the hinge (7). A guide wedge (12) protruding toward the inner cavity (2) is arranged below the discharge port (8). A side mounting frame (10) is arranged on the outer side of the discharge port (8). A blocking cylinder (11) is installed on the outside of the side mounting frame (10). A blocking block (9) for blocking the discharge port is installed at the end of the piston rod of the blocking cylinder (11). The inner cavity (2) is also provided with a stopper (20). The stopper (20) and the guide wedge (12) are arranged on opposite sides of the inner cavity (2). The stop block (20) is located obliquely above the material guide wedge block (12), the liquid outlet pipe (21) is arranged on the bottom side wall of the inner cavity (2), and a valve (22) is installed on the liquid outlet pipe (21).

2. The device for recovering praseodymium-neodymium oxide from NdFeB waste according to claim 1, characterized in that: A plurality of evenly distributed protrusions (17) are provided at the bottom of the partition (16), and the protrusions (17) are spaced apart from the liquid spraying holes (15).

3. The device for recovering praseodymium-neodymium oxide from NdFeB waste according to claim 2, characterized in that: The discharge port (8) is provided with a conical structure, and the structure of the blocking block (9) is adapted to the discharge port (8).

4. The device for recovering praseodymium-neodymium oxide from NdFeB waste according to claim 3, characterized in that: The distance between the guide wedge (12) and the bottom of the inner cavity (2) is one fifth of the total height of the inner cavity (2).

5. The device for recovering praseodymium-neodymium oxide from NdFeB waste according to claim 4, characterized in that: A sealing ring (23) is provided at the contact position between the bottom of the device body (1) and the piston rod (19) of the pushing cylinder (5).

6. The device for recovering praseodymium-neodymium oxide from NdFeB waste according to claim 2, characterized in that: The protrusion (17) has a sawtooth-shaped appearance.

7. The device for recovering praseodymium-neodymium oxide from NdFeB waste according to claim 1, characterized in that: The valve (22) is a solenoid valve.

Images