Rare earth permanent magnet material surface oil stain removing device

Abstract

The invention relates to the field of cleaning of rare earth permanent magnet materials, and particularly discloses a device for removing oil stains on the surface of a rare earth permanent magnet material. The bracket B is fixedly connected to the bottom plate; the mounting disc is rotationally connected to the bracket B; the material drying cylinder is fixedly connected between the mounting discs; the dryer is fixedly connected to the bracket B; the surrounding plate is fixedly connected to the bracket B; according to the neodymium-iron-boron magnet drying device, the drying barrel is arranged to dry the decontaminated neodymium-iron-boron magnet, the neodymium-iron-boron magnet is supported with a small contact surface after entering the drying barrel through the special material distributing plate and the barrel wall structure of the drying barrel, the neodymium-iron-boron magnet can be evenly dried and comprehensively dried, and the neodymium-iron-boron magnet can be dried evenly and comprehensively along with rotation of the drying barrel. And the position of the neodymium-iron-boron magnet can change along with the position, insufficient drying caused by long-time shielding of the neodymium-iron-boron magnet during drying is prevented, and the drying comprehensiveness of the neodymium-iron-boron magnet is further improved.

Description

Technical Field

[0001] The present invention relates to the field of cleaning rare earth permanent magnet materials, and specifically discloses a device for removing oil stains on the surface of rare earth permanent magnet materials. Background Art

[0002] Neodymium iron boron magnets are a major classification of rare earth permanent magnet materials. During the production of neodymium iron boron magnets, before magnetizing the neodymium iron boron magnets, it involves decontaminating the pressed blank with a cleaning liquid and drying it after decontamination to remove the oil stains on the surface of the neodymium iron boron magnet blank. After processing, the surface of the neodymium iron boron magnet blank is smooth and clean, meeting the production requirements.

[0003] However, during the drying process after decontaminating the neodymium iron boron magnet using the decontamination device of the prior art, due to the support relationship, one side of the neodymium iron boron magnet will always be in contact with the support surface, resulting in the cleaning liquid at this position not being easily dried, which has a greater impact on the overall processing effect of the neodymium iron boron magnet, or only increasing the drying time, which will cause energy waste. Therefore, the existing technology currently has a defect in the use of poor processing effect on neodymium iron boron magnets. Summary of the Invention

[0004] In view of the technical defects mentioned in the above background art, the present invention proposes a device for removing oil stains on the surface of rare earth permanent magnet materials, aiming to improve the decontamination effect on rare earth permanent magnet materials.

[0005] A device for removing oil stains on the surface of rare earth permanent magnet materials includes: a bottom plate; a decontamination tank fixedly connected to the bottom plate; a support A fixedly connected to the bottom plate; a roller shaft rotatably connected to the support A; a conveyor belt wound between the roller shafts; a servo motor fixedly connected to the support A, the servo motor being fixed to one of the roller shafts; a support B fixedly connected to the bottom plate; a mounting disc rotatably connected to the support B; a drying cylinder fixedly connected between the mounting discs, the drying cylinder being composed of a cylinder wall and a baffle plate. Through holes are provided on the cylinder wall, both sides of the cylinder wall are fixedly connected to the two mounting discs respectively, the baffle plate is fixed outside the cylinder wall, the baffle plates are evenly arranged on the extension line of the radius of the cylinder wall, there are intervals between the baffle plates, and the through holes on the cylinder wall face the intervals between the baffle plates; a dryer fixedly connected to the support B, the dryer being rotatably connected to and communicating with the mounting disc; a surrounding plate fixedly connected to the support B, the surrounding plate covering the outside of the drying cylinder.

[0006] Further, it further includes: a bracket C fixedly connected to the bottom plate; a control ring rotatably connected to the bracket C, the control ring being fixedly connected to the drying material cylinder, the control ring being evenly provided with bumps, the intervals between the bumps being the same as the intervals of the material distribution plate; a toothless disk rotatably connected to the bracket B, the toothless disk being coaxially and fixedly connected to one of the roller shafts; a gear rotatably connected to the bracket C, the gear being capable of meshing with the teeth of the toothless disk; a control plate slidably connected to the bracket C, the control plate being provided with two wedge-shaped blocks, the inclined surfaces of the wedge-shaped blocks being capable of contacting the bumps on the control ring, the two wedge-shaped blocks being centrosymmetric on the control plate; a connecting arm rotatably connected between the gear and the control ring.

[0007] Further, it further includes: a spreading plate provided on the decontamination tank, the spreading plate being perpendicular to the conveyor belt, the interval between the spreading plate and the conveyor belt being the thickness of a neodymium iron boron magnet.

[0008] Further, it further includes: a screw rod fixedly connected to the decontamination tank; a guide rod fixedly connected to the decontamination tank, the spreading plate being slidably connected between the screw rod and the guide rod; a nut rotatably connected to the spreading plate, the nut being threadedly connected to the screw rod.

[0009] Further, the conveyor belt is provided with a channel.

[0010] Further, it further includes: an air pump fixedly connected to the bottom plate; a spray head fixedly connected inside the decontamination tank, the spray heads being evenly distributed inside the decontamination tank, the air pump being communicated with the spray heads.

[0011] Further, it further includes: a pipeline fixedly connected to the decontamination tank; a spray head fixedly connected to the end of the pipeline, the spray head facing the transportation end of the conveyor belt; a valve fixedly connected to the pipeline, the valve controlling the flow of the pipeline.

[0012] Further, it further includes: a pumping machine fixedly connected to the decontamination tank, the pumping machine being communicated with the pipeline; a filter fixedly connected to the bottom of the decontamination tank; a return pipe fixedly connected and communicated between the pumping machine and the filter.

[0013] Advantages of the present invention: Through the provision of a drying mechanism in the present invention, a drying material cylinder is provided to dry the decontaminated neodymium iron boron magnets. Due to the special structure of its own material distribution plate and the cylinder wall of the drying material cylinder, after the neodymium iron boron magnets enter the drying material cylinder, they are supported with a small contact surface, and can be evenly dried and fully dried. And with the rotation of the drying material cylinder, the positions of the neodymium iron boron magnets can also change with the position, preventing the neodymium iron boron magnets from being insufficiently dried due to being blocked for a long time during drying, thereby further improving the comprehensiveness of drying of the neodymium iron boron magnets.

[0014] The present invention is provided with a transmission mechanism, enabling the rotation of the roller shaft to drive the intermittent rotation of the drying cylinder, automatically and dispersedly adding the neodymium iron boron magnet into the drying cylinder, and aligning the rotation of the drying cylinder with the conveying height of the neodymium iron boron magnet, improving the process automation of the present invention and making the docking process more precise.

[0015] The present invention is provided with a blowing mechanism to blow the neodymium iron boron magnet in the decontamination tank, and cooperate with the groove provided on the conveyor belt, reducing the contact area and contact duration between the neodymium iron boron magnet and the conveyor belt, enabling the neodymium iron boron magnet to be more comprehensively decontaminated, thereby improving the decontamination effect of the present invention on the neodymium iron boron magnet.

[0016] The present invention is provided with a flattening mechanism to flatten the neodymium iron boron magnet on the conveyor belt after the decontamination treatment of the neodymium iron boron magnet, preventing the stacking of the neodymium iron boron magnet and enabling the neodymium iron boron magnet to better enter the drying cylinder later; and the height through which the flattening plate restricts the passage of the neodymium iron boron magnet is adjustable, enabling the flattening mechanism to be adjusted accordingly according to the actual size of the neodymium iron boron magnet, improving the application range of the present invention.

[0017] The present invention is provided with a flushing mechanism to flush the neodymium iron boron magnet after decontamination, removing the residue of the dirty liquid on the neodymium iron boron magnet, enabling the neodymium iron boron magnet to be dried more cleanly, and improving the decontamination effect of the neodymium iron boron magnet. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic diagram of the connection structure of the main frame and the conveying mechanism in the present invention.

[0020] Figure 3 It is a schematic diagram of the overall structure of the drying mechanism in the present invention.

[0021] Figure 4 It is an exploded view of the structure of the drying mechanism in the present invention.

[0022] Figure 5 It is a schematic diagram of the overall structure of the transmission mechanism in the present invention.

[0023] Figure 6 It is a schematic diagram of the connection structure between the transmission mechanism and the drying cylinder in the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the control ring and the control board in the present invention.

[0025] Figure 8 It is a schematic diagram of the connection structure of the flattening mechanism in the present invention.

[0026] Figure 9Schematic diagram of the connection structure between the blowing mechanism and the decontamination tank in the present invention.

[0027] Figure 10 Schematic diagram of the connection structure of the blowing mechanism in the present invention.

[0028] Figure 11 Schematic diagram of the overall structure of the flushing mechanism in the present invention.

[0029] Figure 12 Schematic diagram of the positional structure between the flushing mechanism and the decontamination tank in the present invention.

[0030] In the figure: 1 - main frame, 101 - bottom plate, 102 - decontamination tank, 1021 - generator, 103 - support A, 104 - support B, 105 - support C, 2 - conveying mechanism, 201 - roller shaft, 202 - conveyor belt, 2021 - channel, 203 - servo motor, 204 - loading area, 205 - immersion area, 206 - discharging area, 3 - drying mechanism, 301 - mounting plate, 302 - drying cylinder, 3021 - cylinder wall, 3022 - through hole, 3023 - distributing plate, 3024 - fence, 303 - dryer, 304 - enclosure, 3041 - guiding plate, 3042 - inlet, 3043 - outlet plate, 4 - transmission mechanism, 401 - control ring, 4011 - convex block, 402 - toothless disc, 403 - gear, 404 - control board, 4041 - wedge block, 4042 - limiting block, 405 - connecting arm, 5 - flattening mechanism, 501 - flattening plate, 502 - screw, 503 - guiding rod, 504 - nut, 6 - blowing mechanism, 601 - air pump, 602 - nozzle, 7 - flushing mechanism, 701 - pumping machine, 702 - pipeline, 703 - spray head, 704 - valve, 705 - filter, 706 - return pipe, 8 - neodymium iron boron magnet. Detailed implementation manners

[0031] It should be noted that next, in combination with the drawings provided by the present invention and the marks in the drawings, corresponding to the technical solutions of the present invention, the technical solutions of the present invention will be described in detail and completely. However, the described content is necessarily only one of the embodiments presented by the technical solutions of the present invention, and cannot cover all the content of the present invention. Therefore, any embodiments derived from the embodiments cited in the present invention without substantial creation by those skilled in the art will fall within the protection scope of the present invention.

[0032] Embodiment: An apparatus for removing oil stains on the surface of rare earth permanent magnet materials, in combination with Figure 1, including: a main frame 1; a conveying mechanism 2 fixedly installed on the main frame 1, the conveying mechanism 2 being used to convey the neodymium iron boron magnet 8 for decontamination treatment; a drying mechanism 3 fixedly installed on the main frame 1, the drying mechanism 3 being used to dry the decontaminated neodymium iron boron magnet 8; a transmission mechanism 4 arranged between the conveying mechanism 2 and the drying mechanism 3, the transmission mechanism 4 being used to make the conveying mechanism 2 drive the drying mechanism 3 to operate; a flattening mechanism 5 fixedly installed on the main frame 1, the flattening mechanism 5 being used to flatten the neodymium iron boron magnet 8 on the conveying mechanism 2 to prevent the neodymium iron boron magnet 8 from stacking; a blowing mechanism 6 fixedly installed on the main frame 1, the blowing mechanism 6 being used to change the position of the neodymium iron boron magnet 8 to make the neodymium iron boron magnet 8 be decontaminated evenly; a flushing mechanism 7 fixedly installed on the main frame 1, the flushing mechanism 7 being used to flush the residual dirty liquid on the neodymium iron boron magnet 8 after decontamination.

[0033] Combined with Figure 2 , the main frame 1 includes: a bottom plate 101; a decontamination tank 102 fixedly installed on the bottom plate 101, the neodymium iron boron magnet 8 being decontaminated in the decontamination tank 102, a generator 1021 being arranged on the right side wall of the decontamination tank 102, and the decontamination tank 102 performing ultrasonic cleaning through the generator 1021, with fast cleaning speed and good cleaning effect; brackets A103, B104, and C105 fixedly installed on the bottom plate 101.

[0034] Combined with Figure 2 , the conveying mechanism 2 includes: a roller shaft 201 rotatably installed on the bracket A103; a conveyor belt 202 wound between the roller shafts 201, the roller shafts 201 mainly dividing the conveyor belt 202 into three sections, namely a loading area 204 located in front of the decontamination tank 102, an immersion area 205 located inside the decontamination tank 102, and a discharging area 206 located behind the decontamination tank 102. When using this device, the neodymium iron boron magnet 8 is added to this device in the loading area 204 to start the decontamination treatment, and then the conveyor belt 202 conveys the neodymium iron boron magnet 8 to the immersion area 205 for decontamination treatment. Finally, the decontaminated neodymium iron boron magnet 8 is conveyed to the discharging area 206 for discharging. A channel 2021 is arranged on the conveyor belt 202 to reduce the contact area between the conveyor belt 202 and the neodymium iron boron magnet 8; a servo motor 203 fixedly installed on the bracket A103, the output end of the servo motor 203 being fixed to the roller shaft 201 at the rear lower part to drive the conveyor belt 202 to transport the neodymium iron boron magnet 8 backward. Therefore, the loading area 204 is the transport starting end of the conveyor belt 202, and the discharging area 206 is the transport end of the conveyor belt 202.

[0035] Combined with Figures 3 - 4, the bracket B104 is located at the rear side of the decontamination tank 102. The drying mechanism 3 includes: mounting disks 301 rotatably mounted on the bracket B104, with two mounting disks 301, one on the left and one on the right; a drying cylinder 302 fixedly mounted between the mounting disks 301, and the drying cylinder 302 is used to provide a placement space for drying the neodymium iron boron magnet 8. Among them, the drying cylinder 302 is composed of a cylinder wall 3021, a material distribution plate 3023, and a fence 3024. The left and right sides of the cylinder wall 3021 are fixedly mounted with the two mounting disks 301, and the mounting disks 301 seal the two sides of the cylinder wall 3021. Through holes 3022 are opened on the arc side surface of the cylinder wall 3021. The material distribution plate 3023 is fixedly mounted outside the cylinder wall 3021, and the material distribution plates 3023 are evenly arranged on the extension line of the radius of the cylinder wall 3021. There are intervals between the material distribution plates 3023, and the neodymium iron boron magnet 8 is dried within the intervals between the material distribution plates 3023. The through holes 3022 on the cylinder wall 3021 face the intervals between the material distribution plates 3023. The fence 3024 is arranged between adjacent material distribution plates 3023 to prevent the neodymium iron boron magnet 8 from falling from the side of the material distribution plate 3023; Combined with Figures 3 - 4 , the drying mechanism 3 further includes: a dryer 303 fixedly mounted on the bracket B104. The dryer 303 is rotatably mounted and communicated with the mounting disk 301. The hot drying air generated by the dryer 303 will enter the drying cylinder 302. And since the hot drying air can only be discharged from the through holes 3022, the hot drying air can evenly dry the neodymium iron boron magnets 8 in the intervals between the material distribution plates 3023; a shroud 304 fixedly mounted on the bracket B104, and the shroud 304 covers the outer part of the rear half of the drying cylinder 302 to prevent the neodymium iron boron magnet 8 from separating from the drying cylinder 302. A guiding plate 3041 is provided at the top of the shroud 304, and the guiding plate 3041 is docked with the conveyor belt 202 in the discharging area 206. The guiding plate 3041 guides the neodymium iron boron magnet 8 from the discharging area 206 to the interval between the material distribution plates 3023. An inlet 3042 is provided at the end of the guiding plate 3041 on the shroud 304. The inlet 3042 restricts the neodymium iron boron magnet 8 from entering the space of the material distribution plate 3023, and precisely guides the neodymium iron boron magnet 8. A discharging plate 3043 is provided at the bottom of the shroud 304, and the discharging plate 3043 discharges and collects the dried neodymium iron boron magnet 8.

[0036] Combined with Figures 5 - 7, the transmission mechanism 4 includes: a bracket C105 disposed on the right side of the bracket B104, a control ring 401 rotatably mounted on the bracket C105, the control ring 401 fixedly mounted to the drying cylinder 302, the control ring 401 is evenly provided with bumps 4011, and the intervals of the bumps 4011 are the same as the intervals of the distribution plate 3023; a toothless disk 402 rotatably mounted on the bracket B104, the toothless disk 402 is coaxially fixed to the roller shaft 201 at the upper rear; a gear 403 rotatably mounted on the bracket C105, the gear 403 can mesh with the teeth of the toothless disk 402, and the rotation of the toothless disk 402 will drive the gear 403 to rotate intermittently; a control plate 404 slidably mounted on the bracket C105, the control plate 404 is provided with a wedge block 4041 and a limiting block 4042, the limiting block 4042 is slidably connected to the bracket C105 to limit the sliding direction of the control plate 404, the control plate 404 is provided with two wedge blocks 4041, and the inclined surfaces of the wedge blocks 4041 can contact the bumps 4011 on the control ring 401. The two wedge blocks 4041 are centrosymmetric on the control plate 404. When the control plate 404 reciprocates, the drying cylinder 302 will be controlled to rotate by squeezing the bumps 4011 through the wedge blocks 4041, so as to Figure 6 take Figure 6 as an example. When the control plate 404 moves upward, the lower wedge block 4041 squeezes the bump 4011 to move the bump 4011 backward by a distance of half an interval and contacts the upper wedge block 4041. When the control plate 404 moves downward, the upper wedge block 4041 squeezes the bump 4011 to move the bump 4011 backward by another half an interval, and makes the lower wedge block 4041 contact the next bump 4011. Repeating this process can control the rotation of the control ring 401; a connecting arm 405 rotatably mounted between the gear 403 and the control ring 401, the connecting arm 405 is provided with two sub-arms, which are rotatably mounted between the two sub-arms, and the other non-connected ends corresponding to the two sub-arms are respectively rotatably mounted to the rotating shaft of the gear 403 and the upper end of the control ring 401, so that the rotation of the gear 403 can drive the control plate 404 to reciprocate through the connecting arm 405.

[0037] Combined with Figure 8 , the flattening mechanism 5 includes: a screw 502 fixedly mounted on the right side of the decontamination tank 102; a guide rod 503 fixedly mounted on the left side of the decontamination tank 102; a flattening plate 501 slidably mounted between the screw 502 and the guide rod 503, the flattening plate 501 is perpendicular to the conveyor belt 202 in the discharge area 206, and the interval between the flattening plate 501 and the conveyor belt 202 is the thickness of a neodymium iron boron magnet 8; a nut 504 rotatably mounted on the flattening plate 501, the nut 504 is threadedly mounted to the screw 502, and rotating the nut 504 can change the distance between the flattening plate 501 and the conveyor belt 202 in the discharge area 206.

[0038] Combined with Figures 9 - 10, the blowing mechanism 6 includes: an air pump 601 fixedly installed on the bottom plate 101; a spray head 602 fixedly installed in the decontamination tank 102. The spray heads 602 are evenly distributed in the decontamination tank 102. The air pump 601 communicates with the spray heads 602. The air pump 601 jets air onto the neodymium iron boron magnet 8 on the conveyor belt 202 through the spray heads 602 to change the position of the neodymium iron boron magnet 8 on the conveyor belt 202.

[0039] Combined with Figures 11 - 12 , the flushing mechanism 7 includes: a pumping machine 701 fixedly installed on the right side wall of the decontamination tank 102; a pipeline 702 fixedly installed on the right side wall of the decontamination tank 102. The pipeline 702 is a rigid pipe. The pipeline 702 communicates with the pumping machine 701; a spray head 703 fixedly installed at the end of the pipeline 702. The spray head 703 faces the conveyor belt 202 in the discharging area 206; a valve 704 fixedly installed on the pipeline 702. The valve 704 controls the flow of the pipeline 702; a filter 705 fixedly installed at the bottom of the decontamination tank 102; a return pipe 706 fixedly installed and connected between the pumping machine 701 and the filter 705.

[0040] Use this device to decontaminate the neodymium iron boron magnet 8: 1. Place the neodymium iron boron magnet 8 on the conveyor belt 202 in the loading area 204. The servo motor 203 is started. The conveyor belt 202 transports the neodymium iron boron magnet 8 backward. The neodymium iron boron magnet 8 leaves the loading area 204 and enters the decontamination tank 102. The neodymium iron boron magnet 8 falls on the conveyor belt 202 in the immersion area 205. The generator 1021 is started. The high-frequency vibrating cleaning liquid impacts the impurities on the surface of the neodymium iron boron magnet 8 to achieve the removal of sundries. At the same time, the ultrasonic cavitation effect can emulsify the oil stains so that the oil stains no longer adhere to the neodymium iron boron magnet 8 to achieve the removal of oil stains.

[0041] 2. During the process of removing oil stains in the decontamination tank 102, the air pump 601 is started. The spray heads 602 will jet air evenly onto the conveyor belt 202. While continuously agitating the cleaning liquid to decontaminate the neodymium iron boron magnet 8, the position of the neodymium iron boron magnet 8 on the conveyor belt 202 is continuously changed to prevent a certain side of the neodymium iron boron magnet 8 from always contacting the conveyor belt 202, resulting in incomplete decontamination of that side, so as to achieve the purpose of improving the decontamination effect. And the groove 2021 is opened on the conveyor belt 202, which can reduce the contact area between the neodymium iron boron magnet 8 and the conveyor belt 202 while ensuring the transportation of the neodymium iron boron magnet 8 on the conveyor belt 202, and further improve the comprehensiveness of decontamination.

[0042] 3. After the decontamination is completed, the conveyor belt 202 transports the neodymium iron boron magnet 8 to the discharge area 206. The neodymium iron boron magnet 8 will be transported into contact with the spreading plate 501. Due to the treatment of the air jet in the decontamination tank 102 by the air pump 601, there may be a stacking situation among the neodymium iron boron magnets 8. In this state, only the bottom neodymium iron boron magnet 8 can pass through the gap between the neodymium iron boron magnet 8 and the conveyor belt 202, while the remaining neodymium iron boron magnets 8 are blocked by the spreading plate 501. Therefore, the remaining neodymium iron boron magnets 8 will separate from the bottom neodymium iron boron magnet 8 and fall in front of the bottom neodymium iron boron magnet 8. In this way, through the treatment of the spreading plate 501, the stacked neodymium iron boron magnets 8 can be processed to facilitate the subsequent drying treatment of the neodymium iron boron magnets 8 and prevent the impact of the stacking of neodymium iron boron magnets 8 on the decontamination quality of the neodymium iron boron magnets 8. At the same time, the height of the spreading plate 501 is adjustable, so that the spreading plate 501 can be adjusted according to the thickness of different neodymium iron boron magnets 8, improving the application range of this device.

[0043] 4. The flattened neodymium iron boron magnet 8 will be transported through the lower part of the spray head 703. Before that, the end of the cleaning liquid source pipe is connected at the valve 704, and the spray head 703 sprays the cleaning liquid on the neodymium iron boron magnet 8 to remove the residual dirty liquid on the neodymium iron boron magnet 8, enabling the neodymium iron boron magnet 8 to enter the drying mechanism 3 for drying more cleanly and improving the decontamination effect of the neodymium iron boron magnet 8. As the use time of the flushing mechanism 7 increases, the cleaning liquid in the decontamination tank 102 will also increase. At this time, the pump 701 and the filter 705 can be used. The pump 701 sucks the cleaning liquid in the decontamination tank 102, and the filter 705 filters this part of the cleaning liquid for reuse, thus reducing resource waste.

[0044] 5. Finally, the cleaned neodymium iron boron magnet 8 is conveyed onto the guiding plate 3041 at the top of the surrounding plate 304. The guiding plate 3041 guides the neodymium iron boron magnet 8 to pass through the inlet 3042 and enter the drying cylinder 302, and enter the space between the distribution plates 3023. Then the dryer 303 is started to dry the neodymium iron boron magnet 8. At the same time, under the action of the transmission mechanism 4, the continuous rotation of the roller shaft 201 intermittently rotates the transmission gear 403, and further intermittently reciprocates the transmission control plate 404 back and forth for one round, so that the control ring 401 rotates by an angle equal to the interval size of one bump 4011, that is, the drying cylinder 302 is intermittently rotated. In this way, the conveyor belt 202 can evenly add the neodymium iron boron magnet 8 into the drying cylinder 302. Particularly, the neodymium iron boron magnet 8 will enter the drying cylinder 302 in a vertical state, so that the contact area between the neodymium iron boron magnet 8 and the drying cylinder 302 reaches the minimum. Moreover, as the drying cylinder 302 rotates, it will also drive the position of the neodymium iron boron magnet 8 to change, so that the neodymium iron boron magnet 8 is not easily blocked for a long time, thereby improving the drying effect. The surrounding plate 304 and the fence 3024 can prevent the neodymium iron boron magnet 8 from detaching from the drying cylinder 302 at non-discharging positions. Only when the neodymium iron boron magnet 8 is rotated by the drying cylinder 302 to the lower part of the drying cylinder 302 and the neodymium iron boron magnet 8 is no longer blocked by the surrounding plate 304, the neodymium iron boron magnet 8 can be discharged along the guiding of the discharge plate 3043, completing all the decontamination processes. At this time, the neodymium iron boron magnet 8 is clean and free of oil stains.

[0045] The above embodiments are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An oil stain removing device for the surface of rare earth permanent magnet materials, characterized in that, Including: A bottom plate (101); a decontamination tank (102) fixedly connected to the bottom plate (101) for decontaminating a neodymium iron boron magnet (8); a bracket A (103) fixedly connected to the bottom plate (101); a roller shaft (201) rotatably connected to the bracket A (103); a conveyor belt (202) wound between the roller shafts (201); a servo motor (203) fixedly connected to the bracket A (103), the servo motor (203) being fixed to one of the roller shafts (201) to drive the conveyor belt (202) to transport the neodymium iron boron magnet (8); a bracket B (104) fixedly connected to the bottom plate (101); a mounting disc (301) rotatably connected to the bracket B (104); a drying cylinder (302) fixedly connected between the mounting discs (301), the drying cylinder (302) being located at the transport end of the conveyor belt (202), the drying cylinder (302) being composed of a cylinder wall (3021) and a baffle plate (3023), through holes (3022) being formed in the cylinder wall (3021), both sides of the cylinder wall (3021) being fixedly connected to two mounting discs (301) respectively, the baffle plate (3023) being fixed outside the cylinder wall (3021), the baffle plates (3023) being evenly arranged on the extension line of the radius of the cylinder wall (3021), intervals being provided between the baffle plates (3023), the neodymium iron boron magnet (8) being dried after decontamination within the intervals between the baffle plates (3023), the through holes (3022) in the cylinder wall (3021) being opposite to the intervals between the baffle plates (3023); a dryer (303) fixedly connected to the bracket B (104), the dryer (303) being rotatably connected to and communicating with the mounting disc (301); a surrounding plate (304) fixedly connected to the bracket B (104), the surrounding plate (304) covering the outside of the drying cylinder (302).

2. The oil stain removal device for the surface of a rare earth permanent magnet material according to claim 1, wherein, Also including: A bracket C (105) fixedly connected to the bottom plate (101); a control ring (401) rotatably connected to the bracket C (105), the control ring (401) being fixedly connected to the drying material cylinder (302), the control ring (401) being evenly provided with bumps (4011), the intervals of the bumps (4011) being the same as the intervals of the material distribution plate (3023); a toothless disk (402) rotatably connected to the bracket B (104), the toothless disk (402) being coaxially and fixedly connected to one of the roller shafts (201); a gear (403) rotatably connected to the bracket C (105), the gear (403) being able to mesh with the teeth of the toothless disk (402), and the rotation of the toothless disk (402) driving the gear (403) to rotate intermittently; a control plate (404) slidably connected to the bracket C (105), the control plate (404) being provided with two wedge-shaped blocks (4041), the inclined surfaces of the wedge-shaped blocks (4041) being able to contact the bumps (4011) on the control ring (401), and the two wedge-shaped blocks (4041) being centrosymmetric on the control plate (404); a connecting arm (405) rotatably connected between the gear (403) and the control ring (401), and the rotation of the gear (403) driving the control plate (404) to slide reciprocally through the connecting arm (405).

3. The oil stain removing device for the surface of a rare earth permanent magnet material according to claim 2, wherein, It further includes: A flattening plate (501) arranged on the decontamination tank (102), the flattening plate (501) being perpendicular to the conveyor belt (202), and the interval between the flattening plate (501) and the conveyor belt (202) being the thickness of a neodymium iron boron magnet (8).

4. An oil stain removing device for the surface of a rare earth permanent magnet material according to claim 3, characterized in that, It further includes: A screw rod (502) fixedly connected to the decontamination tank (102); a guide rod (503) fixedly connected to the decontamination tank (102), the flattening plate (501) being slidably connected between the screw rod (502) and the guide rod (503); a nut (504) rotatably connected to the flattening plate (501), the nut (504) being threadedly connected to the screw rod (502).

5. The oil stain removing device for the surface of a rare earth permanent magnet material according to claim 4, characterized in that, The conveyor belt (202) is provided with a channel (2021) for reducing the contact area between the conveyor belt (202) and the neodymium iron boron magnet (8).

6. The oil stain removing device for the surface of a rare earth permanent magnet material according to claim 5, characterized in that, It further includes: An air pump (601) fixedly connected to the bottom plate (101); a spray head (602) fixedly connected inside the decontamination tank (102), the spray heads (602) being evenly distributed inside the decontamination tank (102), and the air pump (601) being communicated with the spray heads (602).

7. The oil stain removal device for the surface of a rare earth permanent magnet material according to claim 6, characterized in that, It further includes: A pipeline (702) fixedly connected to the decontamination tank (102); a spray head (703) fixedly connected to the end of the pipeline (702), the spray head (703) facing the transport end of the conveyor belt (202); a valve (704) fixedly connected to the pipeline (702), the valve (704) controlling the flow of the pipeline (702).

8. An oil stain removing device for the surface of a rare earth permanent magnet material according to claim 7, characterized in that, It further includes: A pumping machine (701) fixedly connected to a decontamination tank (102), the pumping machine (701) communicating with a pipeline (702); a filter (705) fixedly connected to the bottom of the decontamination tank (102); a return pipe (706) fixedly connected and communicating between the pumping machine (701) and the filter (705).

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