Device for cleaning non-magnetic impurities on surface of neodymium iron boron waste

Abstract

The invention discloses a neodymium iron boron waste surface non-magnetic impurity cleaning device, and relates to the technical field of neodymium iron boron waste treatment, the neodymium iron boron waste surface non-magnetic impurity cleaning device comprises a support frame and a material guide frame, the outlet end of the material guide frame is provided with a magnetic separation mechanism, an attachment cleaning mechanism is arranged below the magnetic separation mechanism, and an acid leaching box is arranged below the attachment cleaning mechanism; a secondary cleaning mechanism is arranged on one side of the attachment cleaning mechanism, and non-magnetic impurity powder attached to the surface of the neodymium-iron-boron waste can be sucked away under the action of negative pressure through mutual cooperation of the attachment cleaning mechanism and the dust remover, so that the non-magnetic impurity powder cannot be subjected to acid leaching in the acid leaching box along with the neodymium-iron-boron waste; and the cleaning mode is simple to operate, cleaning can be completed in the falling process of the neodymium iron boron waste materials, cleaning after independent transferring is not needed, and the overall cleaning efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of NdFeB waste treatment, in particular to a device for cleaning non-magnetic impurities on the surface of NdFeB waste. Background Art

[0002] NdFeB is a magnet. This type of magnet is a permanent magnet whose magnetic properties are second only to the absolute zero holmium magnet. It is also the most commonly used rare earth magnet. A large amount of waste is generated in the production process of NdFeB. The waste contains a large amount of valuable components such as praseodymium and neodymium. Therefore, the recycling of rare earths in NdFeB waste is of great economic significance.

[0003] When NdFeB waste is purified by acid leaching, it is necessary to first crush the NdFeB waste through a crusher, and then further enrich or separate the ferromagnetic substances in the waste by magnetic separation, remove some non-magnetic impurities, and then carry out acid leaching. At the same time, during the crushing process of NdFeB waste, non-magnetic impurities with low hardness and high brittleness, such as carbon and soil, are easily crushed into fine powders, while NdFeB materials are relatively hard, and uneven grooves will be formed during the crushing process, which provides conditions for the adhesion of powders. In addition, during the crushing process, NdFeB waste and non-metallic impurities will be fully mixed and contacted. When non-magnetic impurity powder collides with NdFeB waste particles, it may be adsorbed on the surface of NdFeB waste due to intermolecular forces, electrostatic effects, etc. For example, static electricity may be generated on the waste surface due to friction, thereby attracting non-metallic powders with opposite charges;

[0004] The existing acid leaching purification equipment cannot clean the non-magnetic impurities attached to the surface of NdFeB waste, which will affect the subsequent acid leaching purification, such as consuming acid, reducing the reaction rate, introducing new impurities, etc. Therefore, a device for cleaning non-magnetic impurities on the surface of NdFeB waste is proposed to solve 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 NdFeB waste materials to solve the problems in the background technology.

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

[0007] A device for cleaning non-magnetic impurities on the surface of NdFeB waste, comprising a support frame and a material guide frame, one end of the support frame is fixedly connected to the material guide frame, the top of the material guide 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 material guide 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 immersion box is arranged below the attachment cleaning mechanism, a secondary cleaning mechanism is arranged on one side of the attachment cleaning mechanism, and one end of the secondary cleaning mechanism is connected to a dust collector.

[0008] Preferably, the attachment cleaning mechanism comprises an outer cylinder body fixedly connected to the support frame, and one end of the outer cylinder body is connected to the secondary cleaning mechanism, the top and bottom ends of the outer cylinder body are fixedly connected to an end cover, the inner side of the end cover is fixedly connected to a first bearing, the inner side of the first bearing is fixedly connected to a swivel, the inner side of the swivel is fixedly connected to the inner cylinder body, the inner side of the inner cylinder body is fixedly connected to a limiting ring, the inner side of the limiting ring is rotatably connected to a rotating ball, the inner side of the rotating ball is fixedly connected to an intake pipe, and the two ends of the intake pipe are respectively on the inner side of the inner cylinder body and between the chamber between the inner cylinder body and the outer cylinder body, and the intake pipe is inclined toward the vertical center line of the inner cylinder body, one end of the intake pipe is rotatably connected to an up and down swinging assembly, one end of the inner cylinder body is provided with a first rotating assembly, a shaft seal is provided between the swivel and the end cover, the top end of the inner cylinder body is rotatably connected to a guide hopper, and the guide hopper is fixedly connected to the magnetic separation mechanism.

[0009] Preferably, the first rotating assembly includes a gear ring fixedly connected to the inner cylinder, one end of the gear ring is meshed with a gear, one end of the gear is fixedly connected to a first servo motor via a main shaft, and the first servo motor is fixedly connected to the end cover located on the lower side.

[0010] Preferably, the up and down swinging assembly includes a first connecting rod rotatably connected to the intake pipe, the top end of the first connecting rod is fixedly connected to an offset assembly, one end of the offset assembly is fixedly connected to a second connecting rod, and the second connecting rod is slidably connected to the swivel located on the upper side, one end of the second connecting rod is fixedly connected to a wedge plate, one end of the wedge 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 end of the first connecting rod is fixedly connected to a spring, and the bottom end of the spring is fixedly connected to the swivel located on the lower side.

[0011] Preferably, the offset assembly includes a connecting frame fixedly connected to the first connecting rod, a guide shaft fixedly connected to the inner side of the connecting frame, a linear bearing slidably connected to the outer side of the guide shaft, a slider fixedly connected to the top end of the linear bearing, and the slider 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. Through the secondary cleaning mechanism, after the powder on the surface of the NdFeB waste is sucked away, the NdFeB waste will enter the inner side of the magnet tube. At this time, the magnet tube and the magnet bar will generate magnetism after being energized. The generated magnetism will magnetically attract the NdFeB waste powder in the powder, so that the non-magnetic impurity powder enters the inner side of the dust collector, thereby further cleaning the non-magnetic impurity powder, and the separated NdFeB waste powder is collected and added to the inner side of the acid leaching box, thereby saving raw materials.

[0019] 3. A device for cleaning non-magnetic impurities on the surface of NdFeB waste. The magnetic separation mechanism can be used to magnetically separate the crushed NdFeB waste, magnetically separate the magnetic material and remove the impurities. The magnetic separation mechanism can work continuously and does not need to transfer the crushed NdFeB waste, which reduces the labor intensity of the staff and improves the overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

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

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

[0024] Figure 4 The present invention 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.

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

[0026] Figure 6 The present invention is a schematic diagram of the installation structure of an air intake pipe of a device for cleaning non-magnetic impurities on the surface of NdFeB waste.

[0027] Figure 7The present invention is a schematic diagram of the installation structure of a slider of a device for cleaning non-magnetic impurities on the surface of NdFeB waste.

[0028] Figure 8 The present invention is a schematic diagram of the installation structure of a linear bearing of a device for cleaning non-magnetic impurities on the surface of NdFeB waste.

[0029] Fig. 9 The present invention is a schematic diagram of the installation structure of a rotating ball of a device for cleaning non-magnetic impurities on the surface of NdFeB waste.

[0030] Fig.10 The present invention is a schematic diagram of the installation structure of the gear of a device for cleaning non-magnetic impurities on the surface of NdFeB waste.

[0031] Fig.11 The present invention is a schematic diagram of the installation structure of the outer tube body of a device for cleaning non-magnetic impurities on the surface of NdFeB waste.

[0032] Fig.12 The present invention is a schematic diagram of the installation structure of a second servo motor of a device for cleaning non-magnetic impurities on the surface of NdFeB waste.

[0033] Fig.13 The present invention is a schematic diagram of the installation structure of a magnet bar of a device for cleaning non-magnetic impurities on the surface of NdFeB waste.

[0034] In the figure: 1. attachment cleaning mechanism; 101. outer cylinder; 102. end cover; 103. shaft seal; 104. first bearing; 105. inner cylinder; 106. guide hopper; 107. first servo motor; 108. gear; 109. gear ring; 110. limit ring; 111. first connecting rod; 112. connecting frame; 113. guide shaft; 114. linear bearing; 115. slider; 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 tube; 202. Magnet tube; 203. Magnet rod; 204. Second bearing; 205. Outer tube body; 206. Sprocket; 207. Second servo motor; 208. Chain; 209. Fixing 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. Push rod;

[0037] 4. Support frame; 5. Material guide frame; 6. Crusher; 7. Top cover; 8. Dust collector; 9. Acid immersion box. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with specific embodiments, wherein the accompanying drawings are only used for illustrative descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do 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 accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, which are 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The present invention is further explained below in conjunction with specific implementation methods.

[0040] Example

[0041] like Figure 1-Figure 13 As shown, a device for cleaning non-magnetic impurities on the surface of NdFeB waste includes a support frame 4 and a guide frame 5. The support frame 4 can be a column-type support frame or a frame-type support frame, and can be designed and selected according to the support requirements. The support frame 4 is used to support and fix the mechanism of the device. One end of the support frame 4 is fixedly connected to the guide frame 5. The top of the guide 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. The outlet end of the guide frame 5 is provided with a magnetic separation mechanism 3. The guide frame 5 The inclined setting makes it easy for the NdFeB waste crushed by the crusher 6 to slide to 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 box 9 is arranged below the attachment cleaning mechanism 1, and the NdFeB waste after impurities removal can be acid-leached and purified by the acid leaching box 9. A secondary cleaning mechanism 2 is arranged on one side of the attachment cleaning mechanism 1, and one end of the secondary cleaning mechanism 2 is connected to a dust collector 8, which can be a bag dust collector or other suitable dust removal equipment.

[0042] As a further improvement of the present invention, Figure 6 , Figure 7 , Fig. 9 and Fig.10 As 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 connected to the secondary cleaning mechanism 2, the top and bottom ends of the outer cylinder 101 are fixedly connected to the end cover 102, the inner side of the end cover 102 is fixedly connected to the first bearing 104, the inner side of the first bearing 104 is fixedly connected to the swivel 123, the inner side of the swivel 123 is fixedly connected to the inner side of the inner cylinder 105, the inner side of the inner cylinder 105 is fixedly connected to the limiting ring 110, the inner side of the limiting ring 110 is rotatably connected to the rotating ball 121, and the rotating ball 121 is fixedly connected to the inner side of the inner cylinder 105. 1 is fixedly connected with an air intake pipe 122, and the two ends of the air intake pipe 122 are respectively 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, and the non-magnetic powder attached to the surface of the NdFeB waste can be sucked away by the air intake pipe 122 under the action of negative pressure, and because the air inlet of the air intake pipe 122 is inclined downward, it can prevent the NdFeB waste from entering the inner side of the air intake pipe 122, and one end of the air intake pipe 122 is rotatably connected with an up and down swinging assembly, and the inner cylinder A first rotating assembly is provided at one end of 105, and a shaft seal 103 is provided between the swivel 123 and the end cover 102 to prevent leakage of the medium between the inner cylinder 105 and the end cover 102. The top of the inner cylinder 105 is rotatably connected with a guide hopper 106, and the guide hopper 106 is fixedly connected to the magnetic separation mechanism 3. The width of the guide hopper 106 is greater than the width of the first belt conveyor 301, which can ensure that the NdFeB waste falling from the bottom of the first belt conveyor 301 falls into the inner side of the guide hopper 106, and the NdFeB waste after magnetic separation falls into the inner side through the guide hopper 106. After entering the inner side of the cylinder 105, the dust collector 8 can suck the powder attached to the surface of the NdFeB 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 secondary cleaning mechanism 2, so that the non-magnetic impurity powder will not be acid-leached in the acid leaching box 9 together with the NdFeB waste, thereby reducing the impact of the non-magnetic impurity powder on the 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.

[0043] As a further improvement of the present invention, Fig. 9As shown, the first rotating assembly includes 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 the first servo motor 107 through the main shaft, and the first servo motor 107 is fixedly connected to the end cover 102 located on the lower side. When the NdFeB waste passes through the inner cylinder 105 and the suction pipe 122, the first servo motor 107 will rotate with the gear ring 109 through the gear 108, so that the gear ring 109 rotates with the inner cylinder 105, and then the inner cylinder 105 rotates with the swivel 123 and the suction pipe 122, and the swivel 123 will also rotate with the first connecting rod 111 and the second connecting rod 116. When the suction pipe 122 rotates, it will scatter the NdFeB waste in the falling process to ensure that the NdFeB waste will not pile up on each other, so as to facilitate the suction of powder attached to the surface of the NdFeB waste under the action of negative pressure.

[0044] As a further improvement of the present invention, Figure 6 , Figure 7 and Figure 8 As shown, the up and down swing assembly includes a first connecting rod 111 rotatably connected to the suction pipe 122, the top 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 a swivel 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 number of wedge plates 117 and guide wheels 119 can be designed according to needs, 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 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 swivel 123 located on the lower side; the inner cylinder 105 is provided with The swivel ring 123 rotates together with the first connecting rod 111 and the second connecting rod 116. When the second connecting rod 116 passes the guide wheel 119 with the wedge plate 117, the guide wheel 119 will lift the second connecting rod 116 upwards through the wedge plate 117. When passing the wedge plate 117, the wedge plate 117 will move downward, so that the second connecting rod 116 can reciprocate up and down under the cooperation of the guide wheel 119 and the wedge plate 117. At the same time, the second connecting rod 116 can also swing up and down on the inner side of the inner cylinder 105 through the offset component and the first connecting rod 111 with the suction pipe 122 through the rotating ball 121, so that the suction pipe 122 can rotate horizontally and the NdFeB waste can be moved up and down at the same time, so that the NdFeB waste can be further broken up, and the efficiency and effect of cleaning the powder on the surface of the NdFeB waste can be further improved.

[0045] As a further improvement of the present invention, Figure 6 , Figure 7 and Figure 8 As shown, the offset assembly includes a connecting frame 112 fixedly connected to the first connecting rod 111, a guide shaft 113 is fixedly connected to the inner side of the connecting frame 112, a linear bearing 114 is slidably connected to the outer side of the guide shaft 113, a slider 115 is fixedly connected to the top of the linear bearing 114, 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 move in the vertical direction with the first connecting rod 111 through the slider 115, the linear bearing 114, the guide shaft 113 and the connecting frame 112, and when the first connecting rod 111 reciprocates up and down with the suction pipe 122, the first connecting rod 111 will reciprocate along the linear bearing 114 through the connecting frame 112 and the guide shaft 113, thereby ensuring that the first connecting rod 111 can reciprocate up and down with the suction pipe 122 normally.

[0046] As a further improvement of the present invention, Figure 1 , Figure 6 , Fig.11 , Fig.12 and Fig.13 As shown, the secondary cleaning mechanism 2 includes 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, and the cleaning tube 201 is connected to the dust collector 8, one end of the cleaning tube 201 is spirally connected to the outer side of a threaded cover 210, the inner side of the magnet tube 202 is fixedly connected to a magnet rod 203, the magnet tube 202 and the magnet rod 203 are both electromagnets, which are magnetic when powered on, and the outer side of the magnet rod 203 is rotatably connected to the outer tube 205, and the outer A second rotating assembly is provided at one end of the tube body 205. The dust collector 8 will suck the powder inside the inner tube body 105 into the inner side of the dust collector 8 through the magnet tube 202 under the action of negative pressure. At the same time, the magnet tube 202 and the magnet rod 203 will also magnetically attract the magnetic powder mixed in the powder to the surface of the magnet tube 202 and the outer tube body 205, so that the non-magnetic impurity powder enters the inner side of the dust collector 8, thereby further cleaning the non-magnetic impurity powder, and the separated NdFeB waste powder is collected and added to the inner side of the acid leaching box 9, thereby saving raw materials.

[0047] As a further improvement of the present invention, Figure 1 and Fig.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, the toggle assembly includes a connection cover 304 fixedly connected to the second belt conveyor 303, a third servo motor 305 is fixedly connected to the inner side of the connection 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 connection 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 connection plate 308, and the connection plate 308 is slidably connected to the connection cover 304, the bottom end of the connection plate 308 is fixedly connected to a fixing plate 309, and the bottom of the fixing plate 309 is fixedly connected to the fixing plate 309. A shifting rod 310 is fixedly connected to the end, and a plurality of shifting components are arranged on the second belt conveyor 303. When the second belt conveyor 303 transports NdFeB waste, the third servo motor 305 will move back and forth with the connecting plate 308 through the crankshaft 306, and then the connecting plate 308 will move the NdFeB waste back and forth with the shifting rod 310 through the fixed plate 309, thereby realizing the turning of the NdFeB waste, ensuring that the magnetic material at the bottom of the NdFeB waste can be smoothly magnetically attracted to the bottom end surface of the first belt conveyor 301 by the magnet plate 302, thereby improving the effect of magnetic separation.

[0050] Working process: When acid leaching and purification are required, the NdFeB waste crushed by the crusher 6 will fall onto the conveying belt of the second belt conveyor 303 through the guide frame 5. At the same time, 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 be transported along with the second belt conveyor 303. When the NdFeB waste falls to the ground and the second belt conveyor 303 transports the NdFeB waste, the third servo motor 305 will move back and forth with the connecting plate 308 through the crankshaft 306, and then the connecting plate 308 will move the NdFeB waste back and forth with the lever 310 through the fixed plate 309, thereby realizing the turning of the NdFeB waste, ensuring that the magnetic material at the bottom of the NdFeB waste can be smoothly magnetically attracted to the bottom end surface of the first belt conveyor 301 by the magnet plate 302, thereby improving the effect of magnetic separation;

[0051] The width of the guide hopper 106 is greater than the width of the first belt conveyor 301, which can ensure that all the NdFeB waste falling from the bottom of the first belt conveyor 301 falls into the inner side of the guide hopper 106. After the NdFeB waste after magnetic separation passes through the guide hopper 106 and falls into the inner side of the inner cylinder 105, the first servo motor 107 will rotate with the gear ring 109 through the gear 108, so that the gear ring 109 rotates with the inner cylinder 105, and then the inner cylinder 105 rotates with the rotating ring 123 and the suction pipe 122. At the same time, the swivel 123 will also rotate with the first connecting rod 111 and the second connecting rod 116. When the suction pipe 122 rotates, it will scatter the NdFeB waste in the falling process to ensure that the NdFeB waste will not accumulate together, so as to facilitate the suction of the powder attached to the surface of the NdFeB waste under the action of negative pressure; at the same time, the swivel 123 will also rotate with the first connecting rod 111 and the second connecting rod 116. When the second connecting rod 116 passes the guide wheel 119 with the wedge plate 117, the guide wheel 11 9 will push up the second connecting rod 116 through the wedge plate 117. When it passes over the wedge plate 117, the wedge plate 117 will move downward, so that the second connecting rod 116 will reciprocate up and down under the cooperation of the guide wheel 119 and the wedge plate 117. At the same time, the second connecting rod 116 will also swing up and down on the inner side of the inner cylinder 105 through the offset component and the first connecting rod 111 with the suction pipe 122 through the rotating ball 121, so that the suction pipe 122 can rotate horizontally and the NdFeB waste can be moved up and down. Thereby, the NdFeB waste can be further broken up, and the efficiency and effect of cleaning the powder on the surface of the NdFeB waste can be further improved. At the same time, the dust collector 8 can suck the powder attached to the surface of the NdFeB 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 box 9 together with the NdFeB waste, thereby reducing the impact of the non-magnetic impurity powder on the subsequent acid leaching purification;

[0052] At the same time, the magnet tube 202 and the magnet rod 203 will also magnetically attract the magnetic powder mixed in the powder to the surface of the magnet tube 202 and the outer tube body 205, so that the non-magnetic impurity powder enters the inner side of the dust collector 8, thereby further cleaning the non-magnetic impurity powder, and collecting the separated NdFeB waste powder and adding it to the inner side of the acid leaching box 9, thereby saving raw materials. At the same time, when the magnet rod 203 works normally, the second servo motor 207 drives the outer tube body 205 to rotate on the outer side of the magnet rod 203 through the sprocket 206, so as to ensure 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 rod 203 and the outer tube body 205. Moreover, this cleaning method is simple to operate, and the cleaning can be completed during the falling process of the NdFeB waste, and there is no need to clean it after separate transportation, thereby 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 are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the protection scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected. The protection scope of the present invention is defined by the attached 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), an attachment cleaning mechanism (1) is provided below the magnetic separation mechanism (3), and the attachment cleaning mechanism (1) is fixedly connected to the support frame (4), an acid leaching box (9) is provided below the attachment cleaning mechanism (1), a secondary cleaning mechanism (2) is provided on one side of the attachment cleaning mechanism (1), and one end of the secondary cleaning mechanism (2) is connected to a dust collector (8).

2. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 1, characterized in that: 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 end covers (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).

3. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 2, 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.

4. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 2, characterized in that: The up-and-down swing assembly comprises a first connecting rod (111) rotatably connected to the suction pipe (122); a 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), an 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); a bottom end of the first connecting rod (111) is fixedly connected to a spring (120), and a bottom end of the spring (120) is fixedly connected to the rotating ring (123) located on the lower side.

5. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 4, 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).

6. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 2, characterized in that: 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 communicated with 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).

7. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 6, 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); 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 a main shaft end of the second servo motor (207) is fixedly connected to one of the sprockets (206) at the end.

8. 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).

9. The device for cleaning non-magnetic impurities on the surface of NdFeB waste according to claim 1, 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); a fixing plate (309) is fixedly connected to the bottom end of the fixing plate (309); and a shifting rod (310) is fixedly connected to the bottom end of the fixing plate (309).

Images