A device for cleaning non-magnetic impurities on the surface of NdFeB waste

Abstract

The present invention discloses a device for cleaning non-magnetic impurities on the surface of NdFeB waste materials, which relates to the technical field of NdFeB waste material treatment. It includes a support frame and a feeding frame. A magnetic separation mechanism is arranged at the outlet end of the feeding frame. An attachment cleaning mechanism is arranged below the magnetic separation mechanism. An acid leaching tank is arranged below the attachment cleaning mechanism. A secondary cleaning mechanism is arranged on one side of the attachment cleaning mechanism. Through the mutual cooperation of the arranged attachment cleaning mechanism and the dust collector, the non-magnetic impurity powder adhered to the surface of the NdFeB waste materials can be sucked away under the action of negative pressure, so that the non-magnetic impurity powder will not be acid-leached in the acid leaching tank together with the NdFeB waste materials, thereby reducing the influence of the non-magnetic impurity powder on the subsequent acid leaching and purification. Moreover, this cleaning method is simple in operation and can be completed during the falling process of the NdFeB waste materials without the need for separate transportation and then cleaning, improving the overall cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of neodymium iron boron waste treatment, and particularly relates to a device for cleaning non-magnetic impurities on the surface of neodymium iron boron waste. Background Technique

[0002] Neodymium iron boron is a kind of magnet, which is the permanent magnet with the second strongest magnetism only after holmium magnet at absolute zero temperature nowadays, and is also the most commonly used rare earth magnet. A large amount of waste is generated during the production of neodymium iron boron. The waste contains a large amount of valuable components such as praseodymium and neodymium. Therefore, the recycling of rare earths in neodymium iron boron waste has great economic significance.

[0003] When acid leaching and purifying neodymium iron boron waste, it is necessary to first crush the neodymium iron boron waste through a crusher, and then further enrich or separate the ferromagnetic substances in the waste through magnetic separation to remove some non-magnetic impurities, and then perform acid leaching treatment. At the same time, during the crushing process of neodymium iron boron waste, non-magnetic impurities with low hardness and high brittleness, such as carbon and soil, are easily crushed into fine powders. The neodymium iron boron material is relatively hard, and concave and convex grooves will be formed on the surface during the crushing process, providing conditions for the attachment of powders. Moreover, during the crushing process, the neodymium iron boron waste and non-metallic impurities will be fully mixed and contacted. When the non-magnetic impurity powder collides with the neodymium iron boron waste particles, due to intermolecular forces, electrostatic forces, etc., it may be adsorbed on the surface of the neodymium iron boron waste. For example, static electricity may be generated on the surface of the waste due to friction, thus attracting non-metallic powders with opposite charges;

[0004] Existing acid leaching and purification equipment cannot clean the non-magnetic impurities attached to the surface of neodymium iron boron waste, which will affect the subsequent acid leaching and purification, such as consuming acid solution, reducing the reaction rate, introducing new impurities, etc. Therefore, a device for cleaning non-magnetic impurities on the surface of neodymium iron boron waste is proposed for the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for cleaning non-magnetic impurities on the surface of neodymium iron boron waste to solve the problems in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A device for cleaning non-magnetic impurities on the surface of neodymium iron boron waste, comprising a support frame and a feeding frame. One end of the support frame is fixedly connected to the feeding frame. The top of the feeding frame is fixedly connected to a crusher, and the crusher is fixedly connected to the support frame. A magnetic separation mechanism is arranged at the outlet end of the feeding frame. An attachment cleaning mechanism is arranged below the magnetic separation mechanism, and the attachment cleaning mechanism is fixedly connected to the support frame. An acid leaching tank is arranged below the attachment cleaning mechanism. A secondary cleaning mechanism is arranged on one side of the attachment cleaning mechanism. One end of the secondary cleaning mechanism is communicated with a dust collector.

[0008] Preferably, the attachment cleaning mechanism includes an outer cylinder fixedly connected to the support frame, and one end of the outer cylinder is communicated with the secondary cleaning mechanism. Both the top and the bottom of the outer cylinder are fixedly connected with end covers. The inner side of the end cover is fixedly connected with a first bearing. The inner side of the first bearing is fixedly connected with a rotating ring. The inner side of the rotating ring is fixedly connected with an inner cylinder. Limiting rings are fixedly connected to the inner sides of the four circumferences of the inner cylinder. A rotating ball is rotatably connected to the inner side of the limiting ring. An air suction pipe is fixedly connected to the inner side of the rotating ball, and both ends of the air suction pipe are respectively between the inner side of the inner cylinder and the chamber between the inner cylinder and the outer cylinder, and the air suction pipe inclines towards the vertical center line of the inner cylinder. One end of the air suction pipe is rotatably connected with an up-and-down swing assembly. A first rotating assembly is arranged at one end of the inner cylinder. A shaft seal is arranged between the rotating ring and the end cover. A feeding hopper is rotatably connected to the top of the inner cylinder, and the feeding hopper is fixedly connected to the magnetic separation mechanism.

[0009] Preferably, the first rotating assembly includes a toothed ring fixedly connected to the inner cylinder. One end of the toothed ring is engaged with a gear. One end of the gear is fixedly connected to a first servo motor through a main shaft, and the first servo motor is fixedly connected to the lower end cover.

[0010] Preferably, the up-and-down swing assembly includes a first connecting rod rotatably connected to the air suction pipe. The top of the first connecting rod is fixedly connected with an offset assembly. One end of the offset assembly is fixedly connected with a second connecting rod, and the second connecting rod is slidably connected to the upper rotating ring. One end of the second connecting rod is fixedly connected with a wedge-shaped plate. One end of the wedge-shaped plate is rotatably connected to a guide wheel. The outer side of the guide wheel is rotatably connected to a connecting seat, and the connecting seat is fixedly connected to the end cover. The bottom of the first connecting rod is fixedly connected with a spring, and the bottom of the spring is fixedly connected to the lower rotating ring.

[0011] Preferably, the offset assembly includes a connecting frame fixedly connected to the first connecting rod. A guide shaft is fixedly connected to the inner side of the connecting frame. A linear bearing is slidably connected to the outer side of the guide shaft. The top of the linear bearing is fixedly connected with a slider, and the slider is fixedly connected to the second connecting rod.

[0012] Preferably, the secondary cleaning mechanism includes a cleaning tube fixedly connected to the outer cylinder body, the bottom end of the cleaning tube is fixedly connected to a vibration servo motor, the inner side of the cleaning tube is fixedly connected to a magnet tube, and the cleaning tube is connected to a dust collector, a threaded cover is spirally connected to the outer side of one end of the cleaning tube, a magnet rod is fixedly connected to the inner side of the magnet tube, the outer side of the magnet rod is rotatably connected to the outer tube body, and a second rotating component is provided at one end of the outer tube body.

[0013] Preferably, the second rotating assembly includes a second bearing fixedly connected to the outer tube body, and the second bearing is fixedly connected to the cleaning tube, a sprocket is fixedly connected to the top end of the outer tube body, a chain is meshed on the outer side of the sprocket, one end of the cleaning tube is fixedly connected to a fixing frame, one end of the fixing frame is fixedly connected to a second servo motor, and the end of the main shaft of the second servo motor is fixedly connected to one of the sprockets at the end.

[0014] Preferably, the magnetic separation mechanism includes a first belt conveyor fixedly connected to a support frame, a magnet plate is arranged on the inner side of the first belt conveyor, and the magnet plate is fixedly connected to the frame of the first belt conveyor, one end of the support frame is fixedly connected to a second belt conveyor, and a material guide frame is arranged above the second belt conveyor, a top cover is fixedly connected to the top of the second belt conveyor, and the top cover is arranged above the material guide frame, the second belt conveyor and the top cover are arranged below the first belt conveyor, and a toggle assembly is arranged at the top of the second belt conveyor.

[0015] Preferably, the shifting assembly includes a connecting cover fixedly connected to the second belt conveyor, a third servo motor is fixedly connected to the inner side of the connecting cover, a crankshaft is fixedly connected to the end of the main shaft of the third servo motor, the crankshaft is rotatably connected to the connecting cover, a push rod is rotatably connected to the outer side of the crankshaft, the other end of the push rod is rotatably connected to a connecting plate, and the connecting plate is slidably connected to the connecting cover, the bottom end of the connecting plate is fixedly connected to a fixing plate, and the bottom end of the fixing plate is fixedly connected to a shifting rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. A device for cleaning non-magnetic impurities on the surface of NdFeB waste. The non-magnetic impurity powder attached to the surface of NdFeB waste can be sucked away under the action of negative pressure through the cooperation of the attached cleaning mechanism and the dust collector, so that the non-magnetic impurity powder will not be acid-leached in the acid leaching box together with the NdFeB waste, thereby reducing the impact of the non-magnetic impurity powder on subsequent acid leaching purification. In addition, this cleaning method is simple to operate, and the cleaning can be completed during the falling process of the NdFeB waste, without the need for separate transportation and cleaning, thereby improving the overall cleaning efficiency.

[0018] 2. A device for cleaning non-magnetic impurities on the surface of NdFeB waste. After the powder on the surface of the NdFeB waste is sucked away by the secondary cleaning mechanism provided, the NdFeB waste will enter the inner side of the magnet cylinder. At this time, when the magnet cylinder and the magnet rod are energized, magnetism will be generated. The generated magnetism will magnetically attract the NdFeB waste powder in the powder, enabling the non-magnetic impurity powder to enter the inner side of the dust collector, thereby realizing further cleaning of the non-magnetic impurity powder. The separated NdFeB waste powder is collected and added to the inner side of the acid leaching tank, thus saving raw materials.

[0019] 3. A device for cleaning non-magnetic impurities on the surface of NdFeB waste. The magnetic separation mechanism provided can perform magnetic separation on the crushed NdFeB waste, magnetically separate the magnetic substances, remove the impurities, and the magnetic separation mechanism can work continuously without transferring the crushed NdFeB waste, reducing the labor intensity of the staff and improving the overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of a device for cleaning non-magnetic impurities on the surface of NdFeB waste according to the present invention.

[0022] Figure 2 It is a schematic diagram of the installation structure of the feeding frame of a device for cleaning non-magnetic impurities on the surface of NdFeB waste according to the present invention.

[0023] Figure 3 It is a schematic diagram of the installation structure of the magnet plate of a device for cleaning non-magnetic impurities on the surface of NdFeB waste according to the present invention.

[0024] Figure 4 It is a schematic diagram of the installation structure of the third servo motor of a device for cleaning non-magnetic impurities on the surface of NdFeB waste according to the present invention.

[0025] Figure 5 It is a schematic diagram of the installation structure of the push rod of a device for cleaning non-magnetic impurities on the surface of NdFeB waste according to the present invention.

[0026] Figure 6 It is a schematic diagram of the installation structure of the suction pipe of a device for cleaning non-magnetic impurities on the surface of NdFeB waste according to the present invention.

[0027] Figure 7Schematic installation structure diagram of the slider of a device for cleaning non-magnetic impurities on the surface of NdFeB waste materials according to the present invention.

[0028] Figure 8 Schematic installation structure diagram of the linear bearing of a device for cleaning non-magnetic impurities on the surface of NdFeB waste materials according to the present invention.

[0029] Figure 9 Schematic installation structure diagram of the rotating ball of a device for cleaning non-magnetic impurities on the surface of NdFeB waste materials according to the present invention.

[0030] Figure 10 Schematic installation structure diagram of the gear of a device for cleaning non-magnetic impurities on the surface of NdFeB waste materials according to the present invention.

[0031] Figure 11 Schematic installation structure diagram of the outer tube body of a device for cleaning non-magnetic impurities on the surface of NdFeB waste materials according to the present invention.

[0032] Figure 12 Schematic installation structure diagram of the second servo motor of a device for cleaning non-magnetic impurities on the surface of NdFeB waste materials according to the present invention.

[0033] Figure 13 Schematic installation structure diagram of the magnet bar of a device for cleaning non-magnetic impurities on the surface of NdFeB waste materials according to the present invention.

[0034] In the figure: 1. Attachment cleaning mechanism; 101. Outer cylinder; 102. End cover; 103. Shaft seal; 104. First bearing; 105. Inner cylinder; 106. Feeding hopper; 107. First servo motor; 108. Gear; 109. Tooth ring; 110. Limit ring; 111. First connecting rod; 112. Connecting frame; 113. Guide shaft; 114. Linear bearing; 115. Slide block; 116. Second connecting rod; 117. Wedge plate; 118. Connecting seat; 119. Guide wheel; 120. Spring; 121. Rotating ball; 122. Suction pipe; 123. Rotating ring;

[0035] 2. Secondary cleaning mechanism; 201. Cleaning pipe; 202. Magnet cylinder; 203. Magnet bar; 204. Second bearing; 205. Outer tube body; 206. Sprocket; 207. Second servo motor; 208. Chain; 209. Fixed frame; 210. Threaded cover; 211. Vibration servo motor;

[0036] 3. Magnetic separation mechanism; 301. First belt conveyor; 302. Magnet plate; 303. Second belt conveyor; 304. Connecting cover; 305. Third servo motor; 306. Crankshaft; 307. Push rod; 308. Connecting plate; 309. Fixed plate; 310. Poking rod;

[0037] 4. Support frame; 5. Feeding frame; 6. Crusher; 7. Top cover; 8. Dust collector; 9. Acid leaching tank. Detailed implementation manners

[0038] The present invention will be further described below in conjunction with the specific implementation manners. Among them, the attached drawings are only used for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to the present invention. In order to better illustrate the specific implementation manners of the present invention, some components in the attached drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted. Based on the specific implementation manners in the present invention, all other specific implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0039] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. The present invention will be further described below in conjunction with the specific implementation manners.

[0040] Embodiment

[0041] As Figures 1 - 13 shown, a device for cleaning non-magnetic impurities on the surface of neodymium iron boron waste includes a support frame 4 and a feeding frame 5. The support frame 4 can be a columnar support frame or a frame-type support frame, and can be designed and selected according to the support requirements. The mechanism of the present device is supported and fixed through the support frame 4. One end of the support frame 4 is fixedly connected to the feeding frame 5. The top end of the feeding frame 5 is fixedly connected to a crusher 6, and the crusher 6 is fixedly connected to the support frame 4. The crusher 6 can be a jaw crusher. A magnetic separation mechanism 3 is arranged at the outlet end of the feeding frame 5. The feeding frame 5 is inclined to facilitate the neodymium iron boron waste crushed by the crusher 6 to slide into the inner side of the magnetic separation mechanism 3. An attachment cleaning mechanism 1 is arranged below the magnetic separation mechanism 3, and the attachment cleaning mechanism 1 is fixedly connected to the support frame 4. An acid leaching tank 9 is arranged below the attachment cleaning mechanism 1. The neodymium iron boron waste after impurity removal can be acid leached and purified through the acid leaching tank 9. A secondary cleaning mechanism 2 is arranged on one side of the attachment cleaning mechanism 1. One end of the secondary cleaning mechanism 2 is communicated with a dust collector 8. The dust collector 8 can be a bag type dust collector or other suitable dust removal equipment.

[0042] As a further improvement of the present invention, as Figure 6 , Figure 7 , Figure 9 and Figure 10 shown, the attachment cleaning mechanism 1 includes an outer cylinder 101 fixedly connected to the support frame 4, and one end of the outer cylinder 101 is communicated with the secondary cleaning mechanism 2. Both the top and bottom ends of the outer cylinder 101 are fixedly connected with end caps 102. The inner side of the end cap 102 is fixedly connected with a first bearing 104. The inner side of the first bearing 104 is fixedly connected with a rotating ring 123. The inner side of the rotating ring 123 is fixedly connected with an inner cylinder 105. The inner sides of the four circumferences of the inner cylinder 105 are all fixedly connected with limiting rings 110. The inner side of the limiting ring 110 is rotatably connected with a rotating ball 121. The inner side of the rotating ball 121 is fixedly connected with an air suction pipe 122. The two ends of the air suction pipe 122 are respectively between the inner side of the inner cylinder 105 and the chamber between the inner cylinder 105 and the outer cylinder 101. And the air suction pipe 122 is inclined towards the vertical center line of the inner cylinder 105. Through the air suction pipe 122, the powdery non-magnetic substances attached to the surface of the neodymium iron boron waste can be sucked away under the action of negative pressure. And because the air inlet of the air suction pipe 122 is inclined downward, it can prevent the neodymium iron boron waste from entering the inner side of the air suction pipe 122. One end of the air suction pipe 122 is rotatably connected with an up-and-down swing assembly. One end of the inner cylinder 105 is provided with a first rotation assembly. A shaft seal 103 is arranged between the rotating ring 123 and the end cap 102 to prevent the leakage of the medium between the inner cylinder 105 and the end cap 102. The top end of the inner cylinder 105 is rotatably connected with a feeding hopper 106. And the feeding hopper 106 is fixedly connected with the magnetic separation mechanism 3. The width of the feeding hopper 106 is greater than the width of the first belt conveyor 301, which can ensure that all the neodymium iron boron waste falling from the bottom end of the first belt conveyor 301 falls into the inner side of the feeding hopper 106. After the magnetically separated neodymium iron boron waste falls into the inner side of the inner cylinder 105 through the feeding hopper 106, the dust collector 8 can suck the powdery substances attached to the surface of the neodymium iron boron waste into the inner side of the dust collector 8 through the air suction pipe 122, the chamber between the inner cylinder 105 and the outer cylinder 101, and the secondary cleaning mechanism 2, so that the non-magnetic impurity powder will not be acid-leached in the acid leaching tank 9 together with the neodymium iron boron waste, thereby reducing the influence of the non-magnetic impurity powder on the subsequent acid leaching and purification. And this cleaning method is simple to operate and can complete the cleaning during the falling process of the neodymium iron boron waste, without the need for separate transportation and then cleaning, improving the overall cleaning efficiency.

[0043] As a further improvement of the present invention, as Figure 9As shown in the figure, the first rotating assembly includes a toothed ring 109 fixedly connected to the inner cylinder 105. One end of the toothed ring 109 meshes with a gear 108. One end of the gear 108 is fixedly connected to a first servo motor 107 through a main shaft, and the first servo motor 107 is fixedly connected to the lower end cover 102. During the process that the neodymium iron boron waste passes through the inner cylinder 105 and the suction pipe 122, the first servo motor 107 drives the toothed ring 109 to rotate through the gear 108, causing the toothed ring 109 to drive the inner cylinder 105 to rotate. Then, the inner cylinder 105 drives the rotating ring 123 and the suction pipe 122 to rotate together. At the same time, the rotating ring 123 also drives the first connecting rod 111 and the second connecting rod 116 to rotate together. When the suction pipe 122 rotates, it will disperse the neodymium iron boron waste during the falling process, ensuring that the neodymium iron boron waste does not pile up with each other, so as to facilitate sucking away the powder attached to the surface of the neodymium iron boron waste under the action of negative pressure.

[0044] As a further improvement of the present invention, as Figure 6 、 Figure 7 and Figure 8 shown, the up and down swinging assembly includes a first connecting rod 111 rotatably connected to the suction pipe 122. The top end of the first connecting rod 111 is fixedly connected with an offset assembly. One end of the offset assembly is fixedly connected with a second connecting rod 116, and the second connecting rod 116 is slidably connected to the upper rotating ring 123. One end of the second connecting rod 116 is fixedly connected with a wedge plate 117. One end of the wedge plate 117 is rotatably connected with a guide wheel 119. The number of the wedge plates 117 and the guide wheels 119 can be designed according to requirements and are evenly distributed around the vertical center line of the inner cylinder 105. The outer side of the guide wheel 119 is rotatably connected with a connecting seat 118, and the connecting seat 118 is fixedly connected with the end cover 102. The bottom end of the first connecting rod 111 is fixedly connected with a spring 120, and the bottom end of the spring 120 is fixedly connected with the lower rotating ring 123. The inner cylinder 105 drives the rotating ring 123 to rotate together. At the same time, the rotating ring 123 also drives the first connecting rod 111 and the second connecting rod 116 to rotate together. When the second connecting rod 116 drives the wedge plate 117 past the guide wheel 119, the guide wheel 119 will push the second connecting rod 116 upward through the wedge plate 117. When passing over the wedge plate 117, the wedge plate 117 will move downward. Thus, under the mutual cooperation of the guide wheel 119 and the wedge plate 117, the second connecting rod 116 moves up and down reciprocally. At the same time, the second connecting rod 116 also drives the suction pipe 122 to swing up and down inside the inner cylinder 105 through the offset assembly and the first connecting rod 111 by means of a rotating ball 121, so that while the suction pipe 122 rotates horizontally, it can also move the neodymium iron boron waste up and down, thereby further dispersing the neodymium iron boron waste and further improving the efficiency and effect of cleaning the powder on the surface of the neodymium iron boron waste.

[0045] As a further improvement of the present invention, as Figure 6 、 Figure 7 andFigure 8 As shown, the offset component includes a connection frame 112 fixedly connected to the first connecting rod 111. A guide shaft 113 is fixedly connected to the inner side of the connection frame 112. A linear bearing 114 is slidably connected to the outer side of the guide shaft 113. The top end of the linear bearing 114 is fixedly connected to a slider 115, and the slider 115 is fixedly connected to the second connecting rod 116. When the second connecting rod 116 reciprocates in the vertical direction, the second connecting rod 116 will also drive the first connecting rod 111 to move in the vertical direction through the slider 115, the linear bearing 114, the guide shaft 113, and the connection frame 112. When the first connecting rod 111 drives the suction pipe 122 to swing up and down reciprocally, the first connecting rod 111 will reciprocate along the linear bearing 114 through the connection frame 112 and the guide shaft 113, so as to ensure that the first connecting rod 111 can drive the suction pipe 122 to swing up and down reciprocally normally.

[0046] As a further improvement of the present invention, as Figure 1 , Figure 6 , Figure 11 , Figure 12 and Figure 13 As shown, the secondary cleaning mechanism 2 includes a cleaning pipe 201 fixedly connected to the outer cylinder 101. A vibration servo motor 211 is fixedly connected to the bottom end of the cleaning pipe 201. A magnet cylinder 202 is fixedly connected to the inner side of the cleaning pipe 201, and the cleaning pipe 201 is communicated with the dust collector 8. A threaded cover 210 is spirally connected to the outer side of one end of the cleaning pipe 201. A magnet bar 203 is fixedly connected to the inner side of the magnet cylinder 202. Both the magnet cylinder 202 and the magnet bar 203 are electromagnets and have magnetism after being energized. An outer pipe body 205 is rotatably connected to the outer side of the magnet bar 203. A second rotating component is arranged at one end of the outer pipe body 205. The dust collector 8 will suck the powder in the inner side of the inner cylinder 105 into the inner side of the dust collector 8 through the magnet cylinder 202 under the negative pressure action. At the same time, the magnet cylinder 202 and the magnet bar 203 will also magnetically attract the magnetic powder mixed in the powder on the surfaces of the magnet cylinder 202 and the outer pipe body 205, so that the non-magnetic impurity powder enters the inner side of the dust collector 8, thereby realizing the further cleaning of the non-magnetic impurity powder, and enabling the separated neodymium iron boron waste powder to be collected and added into the acid leaching tank 9, thus saving raw materials.

[0047] As a further improvement of the present invention, as Figure 1 and Figure 12As shown, the second rotating assembly includes a second bearing 204 fixedly connected to the outer tube body 205, and the second bearing 204 is fixedly connected to the cleaning tube 201, a sprocket 206 is fixedly connected to the top of the outer tube body 205, and a chain 208 is meshed on the outer side of the sprocket 206, one end of the cleaning tube 201 is fixedly connected to a fixing frame 209, one end of the fixing frame 209 is fixedly connected to a second servo motor 207, and the end of the main shaft of the second servo motor 207 is fixedly connected to one of the sprockets 206 at the end. When the magnet bar 203 works normally, the second servo motor 207 drives the outer tube body 205 to rotate on the outer side of the magnet bar 203 through the sprocket 206, thereby ensuring that the magnetic powder will not only adhere to one side of the outer tube body 205, so that the magnetic powder is evenly attached to the surrounding areas of the outer tube body 205, and the efficiency of magnetic attraction of the magnetic powder can be improved by setting the magnet bar 203 and the outer tube body 205.

[0048] As a further improvement of the present invention, Figure 1 , Figure 2 and Figure 3 As shown, the magnetic separation mechanism 3 includes a first belt conveyor 301 fixedly connected to the support frame 4, the first belt conveyor 301 rotates clockwise, a magnet plate 302 is arranged on the inner side of the first belt conveyor 301, and the magnet plate 302 is fixedly connected to the frame of the first belt conveyor 301, the magnet plate 302 is an electromagnet, and generates magnetism after being energized, one end of the magnet plate 302 extends to the edge of the guide hopper 106, one end of the support frame 4 is fixedly connected to the second belt conveyor 303, and the guide frame 5 is arranged above the second belt conveyor 303, the second belt conveyor 303 rotates clockwise, and the top of the second belt conveyor 303 is fixedly connected to a top cover 7, and the top cover 7 is arranged above the material guide frame 5, the second belt conveyor 303 and the top cover 7 are arranged below the first belt conveyor 301, and a toggle assembly is arranged at the top of the second belt conveyor 303. The NdFeB waste crushed by the crusher 6 will fall onto the conveying belt of the second belt conveyor 303 through the material guide frame 5, and the magnet plate 302 will adsorb the magnetic material on the bottom end surface of the first belt conveyor 301, and move with the first belt conveyor 301. When the magnetic material passes through the magnet plate 302, the magnetic material will fall to the inner side of the guide hopper 106, and the non-magnetic material will fall to the ground with the second belt conveyor 303.

[0049] As a further improvement of the present invention, Figure 2 , Figure 4 and Figure 5As shown in the figure, the toggling assembly includes a connecting cover 304 fixedly connected to the second belt conveyor 303. A third servo motor 305 is fixedly connected to the inner side of the connecting cover 304. The end of the main shaft of the third servo motor 305 is fixedly connected to a crankshaft 306. The crankshaft 306 is rotatably connected to the connecting cover 304. A push rod 307 is rotatably connected to the outer side of the crankshaft 306. The other end of the push rod 307 is rotatably connected to a connecting plate 308. The connecting plate 308 is slidably connected to the connecting cover 304. A fixing plate 309 is fixedly connected to the bottom end of the connecting plate 308. A toggling rod 310 is fixedly connected to the bottom end of the fixing plate 309. Multiple toggling assemblies are arranged on the upper surface of the second belt conveyor 303. When the second belt conveyor 303 transports neodymium iron boron waste, the third servo motor 305 drives the connecting plate 308 to move back and forth through the crankshaft 306. Then, the connecting plate 308 drives the toggling rod 310 to reciprocally toggle the neodymium iron boron waste through the fixing plate 309, thereby realizing the turning of the neodymium iron boron waste and ensuring that the magnetic substances at the bottom of the neodymium iron boron waste can be smoothly magnetically attracted by the magnet plate 302 to the bottom end surface of the first belt conveyor 301, thus improving the magnetic separation effect.

[0050] Workflow: When acid leaching and purification are required, the neodymium iron boron waste crushed by the crusher 6 will fall onto the conveyor belt of the second belt conveyor 303 through the material guiding frame 5. At the same time, the magnet plate 302 will adsorb the magnetic substances on the bottom end surface of the first belt conveyor 301 and move along with the first belt conveyor 301. When the magnetic substances pass by the magnet plate 302, the magnetic substances will fall into the inner side of the material guiding hopper 106. At the same time, the non-magnetic substances will fall to the ground along with the second belt conveyor 303. When the second belt conveyor 303 transports neodymium iron boron waste, the third servo motor 305 drives the connecting plate 308 to move back and forth through the crankshaft 306. Then, the connecting plate 308 drives the toggling rod 310 to reciprocally toggle the neodymium iron boron waste through the fixing plate 309, thereby realizing the turning of the neodymium iron boron waste and ensuring that the magnetic substances at the bottom of the neodymium iron boron waste can be smoothly magnetically attracted by the magnet plate 302 to the bottom end surface of the first belt conveyor 301, thus improving the magnetic separation effect;

[0051] The width of the material guiding hopper 106 is greater than that of the first belt conveyor 301, which can ensure that all the neodymium iron boron waste falling from the bottom end of the first belt conveyor 301 falls into the inner side of the material guiding hopper 106. After the magnetically separated neodymium iron boron waste falls into the inner side of the inner cylinder 105 through the material guiding hopper 106, the first servo motor 107 will drive the toothed ring 109 to rotate through the gear 108, so that the toothed ring 109 drives the inner cylinder 105 to rotate. Then, the inner cylinder 105 drives the rotating ring 123 and the suction pipe 122 to rotate together. At the same time, the rotating ring 123 will also drive the first connecting rod 111 and the second connecting rod 116 to rotate together. When the suction pipe 122 rotates, it will disperse the neodymium iron boron waste during the falling process, ensuring that the neodymium iron boron waste does not accumulate on each other, so as to facilitate sucking away the powder attached to the surface of the neodymium iron boron waste under the negative pressure effect; At the same time, the rotating ring 123 will also drive the first connecting rod 111 and the second connecting rod 116 to rotate together. When the second connecting rod 116 drives the wedge-shaped plate 117 past the guide wheel 119, the guide wheel 119 will push up the second connecting rod 116 through the wedge-shaped plate 117. When passing over the wedge-shaped plate 117, the wedge-shaped plate 117 will move downward. Thus, under the mutual cooperation of the guide wheel 119 and the wedge-shaped plate 117, the second connecting rod 116 moves up and down reciprocally. At the same time, the second connecting rod 116 will also drive the suction pipe 122 to swing up and down inside the inner cylinder 105 through the offset component and the first connecting rod 111 with the rotating ball 121, so that while the suction pipe 122 rotates horizontally, it can also move the neodymium iron boron waste up and down, so as to further disperse the neodymium iron boron waste, further improving the efficiency and effect of cleaning the powder on the surface of the neodymium iron boron waste. At the same time, the dust collector 8 can suck the powder attached to the surface of the neodymium iron boron waste into the inner side of the dust collector 8 through the suction pipe 122, the chamber between the inner cylinder 105 and the outer cylinder 101, and the magnet cylinder 202, so that the non-magnetic impurity powder will not be acid-leached in the acid-leaching tank 9 together with the neodymium iron boron waste, thus reducing the influence of the non-magnetic impurity powder on the subsequent acid-leaching purification;

[0052] At the same time, the magnet cylinder 202 and the magnet bar 203 will also magnetically attract the magnetic powder mixed in the powder on the surfaces of the magnet cylinder 202 and the outer pipe body 205, so that the non-magnetic impurity powder enters the inner side of the dust collector 8, thus realizing the further cleaning of the non-magnetic impurity powder. The separated neodymium iron boron waste powder is collected and then added to the inner side of the acid-leaching tank 9, thus saving raw materials. At the same time, when the magnet bar 203 works normally, the second servo motor 207 drives the outer pipe body 205 to rotate outside the magnet bar 203 through the sprocket 206, so as to ensure that the magnetic powder will not only adhere to one side of the outer pipe body 205, but make the magnetic powder evenly adhere to the four sides of the outer pipe body 205. And by setting the magnet bar 203 and the outer pipe body 205, the efficiency of magnetically attracting the magnetic powder can be improved. Moreover, this cleaning method is simple in operation and can be completed during the falling process of the neodymium iron boron waste, without the need for separate transportation and then cleaning, improving the overall cleaning efficiency.

[0053] The above is a preferred embodiment of the present invention. The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the protection scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for cleaning non-magnetic impurities on the surface of NdFeB waste, comprising a support frame (4) and a material guide frame (5), characterized in that: One end of the support frame (4) is fixedly connected to a material guide frame (5), the top of the material guide frame (5) is fixedly connected to a crusher (6), and the crusher (6) is fixedly connected to the support frame (4), the outlet end of the material guide frame (5) is provided with a magnetic separation mechanism (3), a deposit cleaning mechanism (1) is provided below the magnetic separation mechanism (3), and the deposit cleaning mechanism (1) is fixedly connected to the support frame (4), an acid immersion tank (9) is provided below the deposit cleaning mechanism (1), a secondary cleaning mechanism (2) is provided on one side of the deposit cleaning mechanism (1), and one end of the secondary cleaning mechanism (2) is connected to a dust collector (8); The attachment cleaning mechanism (1) comprises an outer cylinder (101) fixedly connected to a support frame (4), and one end of the outer cylinder (101) is connected to a secondary cleaning mechanism (2); the top and bottom ends of the outer cylinder (101) are fixedly connected to an end cover (102); the inner side of the end cover (102) is fixedly connected to a first bearing (104); the inner side of the first bearing (104) is fixedly connected to a swivel (123); the inner side of the swivel (123) is fixedly connected to an inner cylinder (105); the inner sides of the inner cylinder (105) are fixedly connected to a limiting ring (110); the inner side of the limiting ring (110) is rotatably connected to a rotating ball (121); the rotating ball (121) is rotatably connected to the inner side of the limiting ring (110); An air intake pipe (122) is fixedly connected to the inner side of the ball (121), and two ends of the air intake pipe (122) are respectively located on the inner side of the inner cylinder (105) and between the chambers between the inner cylinder (105) and the outer cylinder (101), and the air intake pipe (122) is inclined toward the vertical center line of the inner cylinder (105), one end of the air intake pipe (122) is rotatably connected to an up-and-down swing assembly, one end of the inner cylinder (105) is provided with a first rotating assembly, a shaft seal (103) is provided between the rotating ring (123) and the end cover (102), and a guide hopper (106) is rotatably connected to the top end of the inner cylinder (105), and the guide hopper (106) is fixedly connected to the magnetic separation mechanism (3); The secondary cleaning mechanism (2) comprises a cleaning tube (201) fixedly connected to the outer cylinder (101); the bottom end of the cleaning tube (201) is fixedly connected to a vibration servo motor (211); the inner side of the cleaning tube (201) is fixedly connected to a magnet tube (202); the cleaning tube (201) is connected to a dust collector (8); a threaded cover (210) is spirally connected to the outer side of one end of the cleaning tube (201); a magnet rod (203) is fixedly connected to the inner side of the magnet tube (202); the outer side of the magnet rod (203) is rotatably connected to the outer tube (205); and a second rotating component is provided at one end of the outer tube (205).

2. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 1, characterized in that: The first rotating assembly comprises a gear ring (109) fixedly connected to the inner cylinder (105), one end of the gear ring (109) is meshed with a gear (108), one end of the gear (108) is fixedly connected to a first servo motor (107) via a main shaft, and the first servo motor (107) is fixedly connected to the end cover (102) located at the lower side.

3. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 1, characterized in that: The up and down swing assembly comprises a first connecting rod (111) rotatably connected to the suction pipe (122); the top end of the first connecting rod (111) is fixedly connected to an offset assembly; one end of the offset assembly is fixedly connected to a second connecting rod (116), and the second connecting rod (116) is slidably connected to the rotating ring (123) located on the upper side; one end of the second connecting rod (116) is fixedly connected to a wedge plate (117), one end of the wedge plate (117) is rotatably connected to a guide wheel (119), the outer side of the guide wheel (119) is rotatably connected to a connecting seat (118), and the connecting seat (118) is fixedly connected to the end cover (102); the bottom end of the first connecting rod (111) is fixedly connected to a spring (120), and the bottom end of the spring (120) is fixedly connected to the rotating ring (123) located on the lower side.

4. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 3, characterized in that: The offset assembly comprises a connection frame (112) fixedly connected to the first connecting rod (111), a guide shaft (113) fixedly connected to the inner side of the connection frame (112), a linear bearing (114) slidably connected to the outer side of the guide shaft (113), a slider (115) fixedly connected to the top end of the linear bearing (114), and the slider (115) fixedly connected to the second connecting rod (116).

5. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 1, characterized in that: The second rotating assembly comprises a second bearing (204) fixedly connected to the outer tube body (205), and the second bearing (204) is fixedly connected to the cleaning tube (201); a sprocket (206) is fixedly connected to the top end of the outer tube body (205), and a chain (208) is meshed on the outer side of the sprocket (206); one end of the cleaning tube (201) is fixedly connected to a fixing frame (209), and one end of the fixing frame (209) is fixedly connected to a second servo motor (207); and a main shaft end of the second servo motor (207) is fixedly connected to one of the sprockets (206) at the end.

6. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 1, characterized in that: The magnetic separation mechanism (3) comprises a first belt conveyor (301) fixedly connected to a support frame (4); a magnet plate (302) is arranged on the inner side of the first belt conveyor (301), and the magnet plate (302) is fixedly connected to the frame of the first belt conveyor (301); one end of the support frame (4) is fixedly connected to a second belt conveyor (303), and a material guide frame (5) is arranged above the second belt conveyor (303); a top cover (7) is fixedly connected to the top of the second belt conveyor (303), and the top cover (7) is arranged above the material guide frame (5); the second belt conveyor (303) and the top cover (7) are arranged below the first belt conveyor (301); and a toggle assembly is arranged at the top of the second belt conveyor (303).

7. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 6, characterized in that: The shifting assembly comprises a connecting cover (304) fixedly connected to the second belt conveyor (303); a third servo motor (305) is fixedly connected to the inner side of the connecting cover (304); a crankshaft (306) is fixedly connected to the end of the main shaft of the third servo motor (305); the crankshaft (306) is rotatably connected to the connecting cover (304); a push rod (307) is rotatably connected to the outer side of the crankshaft (306); the other end of the push rod (307) is rotatably connected to a connecting plate (308); the connecting plate (308) is slidably connected to the connecting cover (304); the bottom end of the connecting plate (308) is fixedly connected to a fixing plate (309); and the bottom end of the fixing plate (309) is fixedly connected to a shifting rod (310).

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