A magnetic separation and recovery device for NdFeB magnetic material waste

Abstract

The present invention relates to the field of NdFeB processing technology, and in particular to a magnetic separation and recovery device for NdFeB magnetic material waste, comprising a cylinder and a support frame symmetrically fixed to the bottom of the cylinder, a feed hopper connected to the top of the cylinder, a discharge pipe connected to the bottom of the cylinder, and a rotating cylinder connected to the two sides of the cylinder along the circumferential rotation. The present invention pours NdFeB waste into the cylinder through the feed hopper, and the rotating cylinder rotates forward under the magnetic force of the magnetic block to drive the NdFeB to rotate forward for magnetic separation, so that non-magnetic substances are separated from magnetic substances, and the magnetically separated non-magnetic substances are transported to the annular shell by the electric screw shaft, and the transport plate reverses to discharge the non-magnetic substances in the annular shell back into the cylinder through the return hopper to continue to be magnetically separated, and so on repeatedly, the non-magnetic substances can be continuously discharged back into the cylinder for multiple magnetic separations to prevent the non-magnetic substances from being mixed with magnetic substances and affecting the magnetic separation effect, thereby improving the magnetic separation effect.

Description

Technical Field

[0001] The invention relates to the technical field of NdFeB processing, and in particular to a magnetic separation and recovery device for NdFeB magnetic material waste. Background Art

[0002] During the processing of NdFeB, a large amount of waste will be generated, and there are magnetic materials in the waste. The magnetic materials also have recycling value, so the NdFeB waste needs to be magnetically separated and recycled.

[0003] A Chinese patent with publication number CN117380388A discloses a device for removing NdFeB magnet waste, including a support frame, a support base fixedly connected to the bottom of the support frame, a rotating rod rotatably connected between the left and right side walls of the support frame, a cylinder fixedly connected to the outer surface of the rotating rod, a protective shell fixedly connected to the inner wall of the support frame, a feed hopper fixedly connected to the top of the protective shell, and a coarse material trough fixedly connected to the front side wall of the protective shell. Although the above patent can perform magnetic separation and recovery treatment on NdFeB waste, the non-magnetic material separated by magnetic separation is directly discharged and multiple magnetic separations cannot be performed. Since some magnetic materials are easily blocked by non-magnetic materials and are difficult to be attracted for magnetic separation, the magnetic separation is not thorough, which affects the effect of magnetic separation.

[0004] The present invention aims to solve the problems existing in the above patents. To this end, a magnetic separation and recovery device for NdFeB magnetic material waste is proposed, which can perform multiple magnetic separations on both magnetic and non-magnetic materials to improve the magnetic separation effect. Summary of the invention

[0005] In order to overcome the shortcomings of the above patent that although NdFeB waste can be magnetically separated and recovered, the non-magnetic materials separated out are directly discharged and cannot be magnetically separated multiple times, and some magnetic materials are easily blocked by non-magnetic materials and difficult to be attracted and magnetically separated, resulting in incomplete magnetic separation and affecting the effect of magnetic separation, the present invention provides a magnetic separation and recovery device for NdFeB magnetic material waste that can perform multiple magnetic separations on both magnetic and non-magnetic materials to improve the magnetic separation effect.

[0006] The present invention is achieved through the following technical solutions:

[0007] A magnetic separation and recovery device for waste NdFeB magnetic materials, comprising a cylinder and a support frame symmetrically fixed to the bottom of the cylinder, a feed hopper is connected to the top of the cylinder, a discharge pipe is connected to the bottom of the cylinder, a rotating cylinder is connected to the two sides of the cylinder along the circumferential direction, an electric rotating shaft fixedly connected to the center position of the rotating cylinder is installed between the two sides of the cylinder, a mounting frame located on the inner side of the rotating cylinder is fixedly connected to the inner side of the cylinder, arc-shaped magnetic blocks close to the inner wall of the rotating cylinder are fixedly connected to the outer side of the mounting frame at uniform intervals along the circumferential direction, a notch is provided on the upper left side of the arc-shaped magnetic block, and also comprises a circulation component, an electric spiral shaft, an annular shell, a return hopper, an annular plate, a material transport plate, a gear shaft and a pushing component, the circulation component is installed on the cylinder for discharging the magnetic material back into the cylinder for magnetic separation, an annular shell is fixedly connected to the cylinder, and the annular shell is connected to the rear side of the cylinder The annular shell and the cylinder are fixedly connected and communicated, a return hopper is connected between the annular shell and the cylinder, an annular plate is connected to the inner side of the annular shell along the circumferential direction, teeth are evenly spaced along the circumferential direction on the outer side of the annular plate, a transport plate in contact with the inner side of the annular shell is evenly spaced along the circumferential direction and fixed to the inner side of the annular plate along the circumferential direction, a gear shaft meshing with the teeth of the annular plate is rotatably connected to the top of the annular shell, the gear shaft and the electric rotating shaft are driven by a synchronous belt assembly, an electric screw shaft is installed at the lower part of the cylinder, the electric screw shaft is used to drive the non-magnetic material to move backward into the annular shell, the non-magnetic material contacts the transport plate, the transport plate reverses to transport the non-magnetic material to the return hopper, the non-magnetic material in the return hopper is discharged back into the cylinder and is magnetically separated again, the pushing assembly is installed between the electric rotating shaft and the cylinder, and is used to push the NdFeB waste to be fully magnetically separated.

[0008] To further explain, the circulation component includes an annular frame symmetrically fixed to the inner side of the cylinder body, the annular frame is connected to a material guide frame close to the rotating cylinder, and inclined pusher plates are fixed to the outer side of the rotating cylinder at evenly spaced intervals in the circumferential direction. The pusher plates are located on the inner side of the annular frame and are used to drive the magnetic material to rotate forward and be magnetically selected again. A discharge component is provided on the inner side of the cylinder body for discharging the magnetic material after multiple magnetic selections.

[0009] Further explanation, the discharge assembly includes an arc frame fixed to the inner side of the cylinder at even intervals, the feed port of the arc frame is at the top, the arc frame and the annular frame are staggered, and the bottom of the arc frame is connected to an inclined material guide pipe to guide the magnetic material, the front material guide pipe passes through the cylinder, and the rear material guide pipe is connected and communicated with the annular frame.

[0010] Further explanation, the pushing assembly includes a fixed frame fixed to the cylinder at even intervals, the fixed frame is connected to the cylinder body, guide rods are symmetrically slidably inserted into the fixed frame, U-shaped rods are fixed between the ends of all the guide rods, and a pushing frame located on the right side of the rotating cylinder is fixed between the ends of the two guide rods on each fixed frame to push the NdFeB waste, a reset spring is connected between the guide rod and the fixed frame, and a trigger assembly is provided on the electric rotating shaft to drive the U-shaped rod to move.

[0011] To further explain, the trigger assembly includes a rotating frame symmetrically fixedly mounted on the electric rotating shaft, the rotating frame is located outside the cylinder, and the outer side of the rotating frame is fixedly connected with trigger rods corresponding to the U-shaped rod at uniform intervals along the circumferential direction to drive the U-shaped rod to move.

[0012] Further description, it also includes a breaking up component, which includes a fixed plate fixed to the inner side of the cylinder at even intervals, the fixed plate and the annular frame are staggered, and the inner side of the fixed plate is slidably connected with a breaking up frame at even intervals to break up the NdFeB waste. The breaking up frame is located above the pushing frame, and connecting springs are symmetrically connected between the breaking up frame and the fixed plate. The outer side surface of the rotating cylinder is fixed with protrusions at even intervals along the circumferential direction to push the breaking up frame to move.

[0013] According to a further description, a brush plate is fixed to the inner side of the arc frame, and the brush plate contacts the outer wall of the rotating cylinder to remove the NdFeB waste attached to the outer wall of the rotating cylinder.

[0014] The beneficial effects of the present invention are:

[0015] 1. Pour the NdFeB waste into the cylinder through the feed hopper. The rotating cylinder rotates forward and drives the NdFeB to rotate forward for magnetic separation under the magnetic force of the magnetic block, so that the non-magnetic material is separated from the magnetic material. The non-magnetic material separated by magnetic separation is transported to the annular shell by the electric screw shaft. The material transport plate reverses and discharges the non-magnetic material in the annular shell back to the cylinder through the return hopper for further magnetic separation. This can be repeated to continuously discharge the non-magnetic material back to the cylinder for multiple magnetic separations to prevent the non-magnetic material from being mixed with magnetic material and affecting the magnetic separation effect, thereby improving the magnetic separation effect.

[0016] 2. Under the action of the push frame, whenever the NdFeB waste is undergoing magnetic separation, the push frame can push part of the NdFeB waste to contact the outer wall of the rotating cylinder, so that the NdFeB waste is more dispersed and driven by the rotating cylinder to rotate forward for magnetic separation, thereby improving the accuracy of magnetic separation of NdFeB waste.

[0017] 3. Under the action of the scrambler, whenever the NdFeB waste is subjected to magnetic separation, the scrambler can scramble the NdFeB waste, and the scrambled NdFeB waste will continue to be magnetically separated, which can prevent the NdFeB waste from agglomerating and causing some non-magnetic materials to be difficult to be magnetically separated, thereby further improving the magnetic separation effect of the NdFeB waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the rotating drum and the electric rotating shaft of the present invention.

[0020] Figure 3It is a three-dimensional structural schematic diagram of the mounting frame and the arc-shaped magnetic block of the present invention.

[0021] Figure 4 This is a structural separation diagram of the mounting frame and the arc-shaped magnetic block of the present invention.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the annular frame, the material guide frame and the material pusher plate of the present invention.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the annular frame and the arc frame of the present invention.

[0024] Figure 7 It is a schematic cross-sectional structural diagram of the arc frame and the material guide tube of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the pusher assembly of the present invention.

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the return spring of the present invention.

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the disassembled components of the present invention.

[0028] Fig.11 It is a schematic diagram of the three-dimensional structure of the connecting spring of the present invention.

[0029] Fig.12 It is a schematic diagram of the three-dimensional structure of the brush plate of the present invention.

[0030] Markings in the accompanying drawings: 1: cylinder, 2: support frame, 3: feed hopper, 4: discharge pipe, 5: rotating cylinder, 6: electric rotating shaft, 7: mounting frame, 8: arc-shaped magnetic block, 9: ring frame, 10: guide frame, 11: push plate, 12: arc frame, 13: guide pipe, 14: electric screw shaft, 141: ring shell, 142: return hopper, 143: ring plate, 144: transport plate, 145: gear shaft, 15: fixed frame, 151: guide rod, 1511: reset spring, 152: push frame, 153: U-shaped rod, 154: rotating frame, 155: trigger rod, 16: fixed plate, 161: breaking frame, 162: bump, 163: connecting spring, 17: brush plate. DETAILED DESCRIPTION

[0031] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0032] Example: A magnetic separation and recovery device for NdFeB magnetic material waste, please refer to Figure 1-Figure 9 As shown, it includes a cylinder 1 and a support frame 2 symmetrically fixed to the bottom of the cylinder 1, a feed hopper 3 is connected to the right rear side of the top of the cylinder 1, and a discharge pipe 4 is connected to the front side of the bottom of the cylinder 1. A rotating cylinder 5 is connected to the front and rear sides of the cylinder 1 along the circumferential direction, and an electric shaft 6 is installed between the middle of the front and rear sides of the cylinder 1. The electric shaft 6 is fixedly connected to the center of the rotating cylinder 5. A mounting frame 7 is fixed to the rear side of the cylinder 1, and the mounting frame 7 is located on the inner side of the rotating cylinder 5. Three arc-shaped magnetic blocks are fixed to the outer side of the mounting frame 7 at uniform intervals along the circumferential direction. 8, the arc-shaped magnetic block 8 is close to the inner wall of the rotating cylinder 5, and a notch is provided on the upper left of the arc-shaped magnetic block 8. It also includes a circulation component, an electric screw shaft 14, an annular shell 141, a return hopper 142, an annular plate 143, a material transporting plate 144, a gear shaft 145 and a pushing component. The circulation component is installed on the cylinder 1. When the circulation component is in operation, the magnetic material can be discharged back into the cylinder 1 for magnetic separation. The outer side of the cylinder 1 is fixedly connected with an annular shell 141, and the lower part of the annular shell 141 is fixedly connected and communicated with the lower part of the rear side of the cylinder 1. A return hopper 142 is connected between the upper part of the shell 141 and the upper part of the rear side of the cylinder 1. An annular plate 143 is connected to the inner side of the annular shell 141 along the circumferential direction. The outer side of the annular plate 143 is provided with tooth grooves at uniform intervals along the circumferential direction. A material transport plate 144 is fixed to the inner side of the annular plate 143 along the circumferential direction. The material transport plate 144 contacts the inner side of the annular shell 141. A gear shaft 145 is rotatably connected to the middle of the top of the annular shell 141. The gear shaft 145 is meshed with the tooth grooves of the annular plate 143. The rear side of the gear shaft 145 is connected to the rear side of the electric shaft 6. The cylinder 1 is driven by a synchronous belt assembly, and an electric screw shaft 14 is installed at the lower part of the cylinder 1. The electric screw shaft 14 is used to drive the non-magnetic material to move backward into the annular shell 141. The non-magnetic material contacts the transport plate 144. The transport plate 144 reverses to transport the non-magnetic material to the return hopper 142. The non-magnetic material in the return hopper 142 is discharged back into the cylinder 1 to be magnetically separated again. The pushing assembly is installed between the electric rotating shaft 6 and the cylinder 1. When the pushing assembly is in operation, the pushing assembly can push the NdFeB waste to be fully magnetically separated.

[0033] See also Figure 5-Figure 7As shown, the circulation component includes an annular frame 9, a guide frame 10, a push plate 11 and a discharge component. The annular frame 9 is symmetrically fixed to the front and rear sides of the inner side of the cylinder 1. The front right parts of the two annular frames 9 are connected with the guide frame 10. The guide frame 10 is close to the rotating cylinder 5. Two groups of push plates 11 are fixed to the outer side of the rotating cylinder 5 at uniform intervals in the circumferential direction. The two groups of push plates 11 are respectively located on the inner sides of the annular frames 9 on the front and rear sides. The push plates 11 are inclined. When the push plates 11 rotate forward, the push plates 11 can drive the magnetic material to rotate forward again and be magnetically selected. A discharge component is arranged inside the cylinder 1. When the discharge component When the parts are in operation, the discharging assembly can discharge the magnetic materials after multiple magnetic separations; the discharging assembly includes an arc frame 12 and a guide pipe 13. Three arc frames 12 are evenly spaced and fixed on the left side of the cylinder 1. The feed port of the arc frame 12 is at the top. The three arc frames 12 are staggered with the two annular frames 9. The bottoms of the three arc frames 12 are all connected with guide pipes 13. The guide pipes 13 are inclined. The guide pipes 13 can guide the magnetic materials. The front guide pipe 13 runs through the front side of the cylinder 1, and the two rear guide pipes 13 are respectively connected and communicated with the two annular frames 9.

[0034] See also Figure 8 and Fig. 9 As shown, the pusher assembly includes a fixed frame 15, a guide rod 151, a reset spring 1511, a pusher frame 152, a U-shaped rod 153 and a trigger assembly. Three fixed frames 15 are evenly spaced and fixedly connected to the right side of the cylinder 1. The fixed frame 15 is connected to the inside of the cylinder 1. The three fixed frames 15 are all symmetrically slidably connected with guide rods 151 in the front and back directions. A U-shaped rod 153 is fixedly connected between the right ends of all the guide rods 151. A pusher frame 152 is fixedly connected between the left ends of the two guide rods 151 on each fixed frame 15. The pusher frame 152 is located on the right side of the rotating cylinder 5. When the pusher frame 152 moves left and right, the NdFeB waste located in the pusher frame 152 can be pushed. A return spring 1511 is connected between the left side of the guide rod 151 and the right side surface of the fixed frame 15. A trigger assembly is arranged on the electric rotating shaft 6. When the trigger assembly is operated, the trigger assembly can drive the U-shaped rod 153 to move to the right; the trigger assembly includes a rotating frame 154 and a trigger rod 155. The electric rotating shaft 6 is symmetrically fixed with the rotating frame 154 front and back. The rotating frame 154 is located outside the cylinder 1. Five trigger rods 155 are fixedly connected to the outer side surfaces of the rotating frame 154 on the front and rear sides at uniform intervals along the circumferential direction. The trigger rod 155 corresponds to the U-shaped rod 153. When the trigger rod 155 rotates forward, the trigger rod 155 can drive the U-shaped rod 153 to move to the right.

[0035] First, start the electric screw shaft 14 to rotate forward, start the electric shaft 6 to drive the rotating cylinder 5 to rotate forward, and the rotating cylinder 5 drives the push plate 11 to rotate forward. At the same time, the electric shaft 6 also drives the rotating frame 154 to rotate forward, and the rotating frame 154 drives the trigger rod 155 to rotate forward. When the trigger rod 155 rotates forward and contacts the end of the U-shaped rod 153, the trigger rod 155 drives the U-shaped rod 153 to move right, and the U-shaped rod 153 drives the guide rod 151 to move right. The reset spring 1511 is compressed, and the guide rod 151 drives the push frame 152 to move right. As the trigger rod 155 continues to rotate forward and disengages from the U-shaped rod 153, due to the action of the reset spring 1511, the guide rod 151 moves to the left and resets, driving the push frame 152 and the U-shaped rod 153 to move to the left and reset, and this process is repeated. The push frame 152 can be made to move left and right continuously. At the same time, the electric shaft 6 rotates forward through the synchronous belt assembly to drive the gear shaft 145 to rotate forward. The gear shaft 145 drives the annular plate 143 to reverse through the tooth groove. The reverse rotation of the annular plate 143 drives the transport plate 144 to reverse. Then, the NdFeB waste is poured into the cylinder 1 from the feed hopper 3. The NdFeB waste contacts the rotating cylinder 5 and is within the magnetic attraction range of the arc-shaped magnetic block 8. The magnetic block adsorbs the magnetic material in the NdFeB waste on the surface of the rotating cylinder 5 and rotates forward together. The rotating cylinder 5 rotates forward and drives the NdFeB waste to rotate forward for magnetic separation. Part of the NdFeB waste rotates forward and falls into the push frame 152. The push frame 152 moves left and right to push the NdFeB waste to the left onto the rotating cylinder 5, so that the NdFeB waste is driven into the rotating cylinder 5 in a more dispersed manner. Magnetic separation is performed to improve the accuracy of magnetic separation of NdFeB waste. When the NdFeB waste rotates forward to the bottom, the non-magnetic waste in the NdFeB waste falls to the bottom of the cylinder 1 and contacts the electric screw shaft 14. The electric screw shaft 14 rotates forward to drive the non-magnetic material to move backward and be discharged into the annular shell 141. The non-magnetic material contacts the conveying plate 144. The conveying plate 144 reverses to drive the non-magnetic material to reverse. When the non-magnetic material reverses to the top and corresponds to the return hopper 142, the non-magnetic material falls into the return hopper 142. The non-magnetic material in the return hopper 142 is discharged back into the cylinder 1 and is driven by the rotating cylinder 5 to rotate forward again for magnetic separation. This is repeated, and the non-magnetic material can be continuously discharged back to the cylinder 1 for multiple magnetic separations to prevent the non-magnetic material from being mixed with magnetic material and affecting the magnetic separation effect. , thereby improving the magnetic separation effect, at the same time, the forward rotation of the rotating cylinder 5 drives the magnetic material in the NdFeB waste to rotate forward, when the magnetic material rotates forward to the notch position of the arc-shaped magnetic block 8, when the magnetic material is out of the magnetic force range of the arc-shaped magnetic block 8, the magnetic material falls from the rotating cylinder 5 into the arc frame 12, and the magnetic material in the arc frame 12 is discharged into the guide tube 13, and the magnetic material in the guide tube 13 is discharged into the annular frame 9, and the forward rotation of the rotating cylinder 5 drives the push plate 11 to rotate forward, and the forward rotation of the push plate 11 drives the magnetic material in the annular frame 9 to rotate forward, when the magnetic material rotates forward to correspond to the guide frame 10, part of the magnetic material is discharged into the guide frame 10, and the magnetic material is more dispersed on the rotating cylinder 5 through the guide frame 10 and is magnetically separated, so that the non-magnetic material in the magnetic material is magnetically separated more cleanly,This process is repeated, and the magnetic materials separated by magnetic separation can be continuously separated for multiple times. The magnetic materials separated for multiple times are discharged and collected through the front guide pipe 13. When all the NdFeB waste materials are separated by magnetic separation, the electric screw shaft 14 is started to reverse and drive the non-magnetic materials to move forward and discharge into the discharge pipe 4. The discharge pipe 4 discharges and collects the non-magnetic materials. After all the non-magnetic materials are discharged, the electric screw shaft 14 is turned off, and then the electric shaft 6 is turned off. The rotating drum 5 and the rotating frame 154 stop rotating forward, the rotating drum 5 stops driving the push plate 11 to rotate forward, and the push frame 152 stops moving left and right. At the same time, the electric shaft 6 stops driving the gear shaft 145 to rotate, and the annular plate 143 stops driving the transport plate 144 to reverse, and the magnetic and non-magnetic materials can be subsequently processed.

[0036] See also Fig.10 and Fig.11 As shown, it also includes a breaking up component installed between the rotating cylinder 5 and the annular frame 9, the breaking up component includes a fixed plate 16, a breaking up frame 161, a protrusion 162 and a connecting spring 163, three fixed plates 16 are evenly spaced and fixedly connected on the right side of the cylinder body 1, the three fixed plates 16 are staggered with the two annular frames 9, and three breaking up frames 161 are evenly spaced and slidably connected on the inner sides of the three fixed plates 16. When the breaking up frame 161 moves left and right, the breaking up frame 161 can break up the NdFeB waste. The breaking up frame 161 is located above the pushing frame 152, and the connecting spring 163 is symmetrically connected front and back between the right side surface of the breaking up frame 161 and the inner side of the fixed plate 16. The outer side surface of the rotating cylinder 5 is evenly spaced and fixedly connected with protrusions 162 along the circumferential direction. When the protrusions 162 rotate and contact the breaking up frame 161, the protrusions 162 can push the breaking up frame 161 to move to the right.

[0037] When the rotating drum 5 rotates forward to drive the NdFeB waste to rotate forward for magnetic separation, the rotating drum 5 also drives the protrusion 162 to rotate forward. When the protrusion 162 rotates forward and contacts the disassembly frame 161, the protrusion 162 drives the disassembly frame 161 to move to the right, and the connecting spring 163 is compressed. When the protrusion 162 continues to rotate forward and disengages from the disassembly frame 161, due to the action of the connecting spring 163, the disassembly frame 161 moves to the left and resets. This is repeated, so that the disassembly frame 161 can be continuously moved left and right. When the NdFeB waste contacts the disassembly frame 161, the disassembly frame 161 moves left and right to disassemble the NdFeB waste. The disassembled NdFeB waste contacts the rotating drum 5 and is driven to rotate forward for magnetic separation. When the rotating drum 5 stops rotating forward, the rotating drum 5 stops driving the protrusion 162 to rotate forward, and the protrusion 162 stops driving the disassembly frame 161 to move left and right. In this way, it is possible to prevent the NdFeB waste from agglomerating, which would make some non-magnetic materials difficult to be magnetically separated, thereby further improving the magnetic separation effect of the NdFeB waste.

[0038] See also Fig.12As shown, a brush plate 17 is also included. The brush plate 17 is fixedly connected to the upper left side surface of the three arc-shaped frames 12. The brush plate 17 contacts the outer wall of the rotating cylinder 5. When the rotating cylinder 5 rotates forward, the brush plate 17 can remove the NdFeB waste attached to the outer wall of the rotating cylinder 5.

[0039] When the rotating drum 5 rotates forward to drive the NdFeB waste to rotate forward for magnetic separation, the brush plate 17 keeps brushing off the NdFeB waste attached to the outer wall of the rotating drum 5. In this way, the NdFeB waste can be prevented from being attached to the rotating drum 5 and being difficult to be magnetically separated, thereby ensuring that all the NdFeB waste can be magnetically separated.

[0040] Finally, it is necessary to point out that the above content is only used to help understand the technical solution of the present invention and cannot be understood as limiting the scope of protection of the present invention; non-essential improvements and adjustments made by technical personnel in the field of technology based on the above content of the present invention are all within the scope of protection required by the present invention.

Claims

1. A magnetic separation and recovery device for NdFeB magnetic material waste, comprising a cylinder (1) and a support frame (2) symmetrically fixed to the bottom of the cylinder (1), the top of the cylinder (1) is connected to a feed hopper (3), the bottom of the cylinder (1) is connected to a discharge pipe (4), a rotating cylinder (5) is rotatably connected between the two sides of the cylinder (1), an electric rotating shaft (6) fixedly connected to the center position of the rotating cylinder (5) is installed between the two sides of the cylinder (1), a mounting frame (7) located on the inner side of the rotating cylinder (5) is fixedly connected to the inner side of the cylinder (1), and arc-shaped magnetic blocks (8) close to the inner wall of the rotating cylinder (5) are fixedly connected to the outer side of the mounting frame (7) at uniform intervals along the circumferential direction, and a notch is provided at the upper left of the arc-shaped magnetic block (8), characterized in that: The invention also comprises a circulation component, an electric screw shaft (14), an annular shell (141), a return hopper (142), an annular plate (143), a material transporting plate (144), a gear shaft (145) and a material pushing component. The circulation component is mounted on the cylinder (1) and is used to discharge the magnetic material back into the cylinder (1) for magnetic separation. The cylinder (1) is fixedly connected with an annular shell (141). The annular shell (141) is fixedly connected to and communicated with the rear side of the cylinder (1). The annular shell (141) and the cylinder (1) are connected with the return hopper (142). The inner side of the annular shell (141) is rotatably connected with an annular plate (143). The outer side of the annular plate (143) is provided with tooth grooves at uniform intervals in the circumferential direction. The inner side of the annular plate (143) is fixedly connected with the annular shell (141) at uniform intervals in the circumferential direction. 1) a material transport plate (144) in contact with the inner side, a gear shaft (145) is rotatably connected to the top of the annular shell (141) and meshed with the teeth of the annular plate (143), the gear shaft (145) and the electric rotating shaft (6) are driven by a synchronous belt assembly, an electric screw shaft (14) is installed at the lower part of the cylinder (1), the electric screw shaft (14) is used to drive the non-magnetic material to move backward into the annular shell (141), the non-magnetic material contacts the material transport plate (144), the material transport plate (144) reverses to transport the non-magnetic material to the return hopper (142), the non-magnetic material in the return hopper (142) is discharged back into the cylinder (1) and is magnetically separated again, the pushing assembly is installed between the electric rotating shaft (6) and the cylinder (1), and is used to push the NdFeB waste to be fully magnetically separated; The circulation component comprises an annular frame (9) symmetrically fixed to the inner side of the cylinder (1); the annular frame (9) is connected to a material guide frame (10) close to the rotating cylinder (5); obliquely arranged pusher plates (11) are fixed to the outer side of the rotating cylinder (5) at uniform intervals in the circumferential direction; the pusher plates (11) are located on the inner side of the annular frame (9) and are used to drive the magnetic material to rotate forward and be magnetically separated again; and a discharge component is provided on the inner side of the cylinder (1) and is used to discharge the magnetic material after multiple magnetic separations.

2. The NdFeB magnetic material waste magnetic separation and recovery device according to claim 1, characterized in that: The discharge assembly comprises an arc frame (12) fixedly connected to the inner side of the cylinder (1) at even intervals, the feed port of the arc frame (12) is located at the top, the arc frame (12) and the annular frame (9) are arranged alternately, and the bottom of the arc frame (12) is connected to an inclined material guide pipe (13) to guide the magnetic material, the front side material guide pipe (13) passes through the cylinder (1), and the rear side material guide pipe (13) is connected and communicated with the annular frame (9).

3. A magnetic separation and recovery device for NdFeB magnetic material waste according to claim 2, characterized in that: The pusher assembly comprises fixed frames (15) fixedly connected to the cylinder (1) at even intervals, the fixed frames (15) being connected to the cylinder (1), guide rods (151) symmetrically slidably penetrated on the fixed frames (15), U-shaped rods (153) are fixedly connected between the ends of all the guide rods (151), a pusher frame (152) located on the right side of the rotating cylinder (5) is fixedly connected between the ends of two guide rods (151) on each fixed frame (15) to push the NdFeB waste, a return spring (1511) is connected between the guide rods (151) and the fixed frame (15), and a trigger assembly is arranged on the electric rotating shaft (6) for driving the U-shaped rods (153) to move.

4. A magnetic separation and recovery device for NdFeB magnetic material waste according to claim 3, characterized in that: The trigger assembly comprises a rotating frame (154) symmetrically fixedly mounted on the electric rotating shaft (6); the rotating frame (154) is located outside the cylinder (1); and trigger rods (155) corresponding to the U-shaped rods (153) are fixedly connected to the outer side surface of the rotating frame (154) at even intervals along the circumferential direction, so as to drive the U-shaped rods (153) to move.

5. A magnetic separation and recovery device for NdFeB magnetic material waste according to claim 4, characterized in that: The invention also includes a disintegration assembly, which includes a fixed plate (16) fixedly connected to the inner side of the cylinder (1) at uniform intervals, the fixed plate (16) and the annular frame (9) are arranged alternately, and a disintegration frame (161) is slidably connected to the inner side of the fixed plate (16) at uniform intervals to disintegrate the NdFeB waste. The disintegration frame (161) is located above the pushing frame (152), and a connecting spring (163) is symmetrically connected between the disintegration frame (161) and the fixed plate (16). The outer side surface of the rotating cylinder (5) is fixedly connected with protrusions (162) at uniform intervals along the circumferential direction to push the disintegration frame (161) to move.

6. A magnetic separation and recovery device for NdFeB magnetic material waste according to claim 5, characterized in that: The invention also comprises a brush plate (17) fixedly connected to the inner side of the arc frame (12), wherein the brush plate (17) contacts the outer wall of the rotating cylinder (5) and is used for removing the NdFeB waste material attached to the outer wall of the rotating cylinder (5).

Images