Neodymium-iron-boron magnet degumming device

Abstract

The invention provides a neodymium-iron-boron magnet degumming device, relates to the technical field of neodymium-iron-boron magnet processing, and aims to solve the technical problems of low efficiency, high energy consumption, poor environmental protection property and high defective rate of a neodymium-iron-boron magnet degumming mode in the prior art. A neodymium-iron-boron magnet degumming device comprises a rack, a degumming pool, a circulating filtering assembly, a heating assembly, a cover body and a steam treatment assembly, and the degumming pool is arranged on the rack and provided with a high-boiling-point liquid degumming medium; the circulating filtering assembly comprises a first pump body, a filtering barrel, a first pipeline and a second pipeline, a filtering net is arranged in the filtering barrel, the filtering barrel is communicated with the degumming pool through the first pipeline and the second pipeline, the first pump body is connected to the first pipeline or the second pipeline in series, and the first pump body drives a high-boiling-point liquid degumming medium to flow between the filtering barrel and the degumming pool; the heating assembly comprises a heating pipe arranged in the degumming pool; the cover body covers the upper end of the degumming pool, and the steam treatment assembly is connected with the cover body and communicated with the through hole of the cover body.

Description

Technical Field

[0001] This invention relates to the field of neodymium iron boron magnet processing technology, specifically to a neodymium iron boron magnet degumming device. Background Technology

[0002] During the processing of neodymium iron boron magnets, strong adhesives such as 502 are used for bonding due to process requirements. Subsequently, the adhesive needs to be removed to separate the workpieces; this process is called degumming. Currently, the industry commonly uses two main degumming methods: boiling water degumming and high-temperature dry-frying degumming. The boiling water degumming method involves immersing the bonded neodymium iron boron magnets in a water tank, heating the water to boiling, and maintaining this boiling state for an extended period. The heat and moisture soften and deactivate the adhesive. However, due to the boiling point of water, the maximum degumming temperature can only reach 100 degrees Celsius, resulting in low degumming efficiency. It typically requires continuous boiling for 1 to 2 hours or even longer to complete, which is time-consuming and wasteful of energy. Furthermore, this process generates a large amount of production wastewater, increasing the environmental burden and costs for companies. The high-temperature dry-frying degumming method generates a large amount of harmful fumes and dust, which poses a threat to the working environment and the health of operators. It also requires complex fume treatment facilities. More importantly, during the frying process, collisions and friction inevitably occur between workpieces and between workpieces and containers, which can easily cause damage such as breakage and chipping of neodymium iron boron magnets, resulting in a high rate of defective products. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide a neodymium iron boron magnet degumming device to solve the technical problems of low efficiency, high energy consumption, poor environmental performance and high defect rate of the existing neodymium iron boron magnet degumming method.

[0004] To solve the above-mentioned technical problems, the present invention provides a neodymium iron boron magnet debinding device, comprising: frame; The degumming tank is located on the frame and is equipped with a high-boiling-point liquid degumming medium; The circulating filtration assembly includes a first pump body, a filter barrel, a first pipeline, and a second pipeline. The filter barrel is equipped with a filter screen. The filter barrel is connected to a degumming tank through the first pipeline and the second pipeline. The interface between the first pipeline and the filter barrel and the interface between the second pipeline and the filter barrel are located on both sides of the filter screen, respectively. The first pump body is connected in series on the first pipeline or the second pipeline. The first pump body drives the high-boiling-point liquid degumming medium to flow between the filter barrel and the degumming tank. Heating assembly, including heating tubes disposed in a degumming tank; The cover is placed over the upper end of the degumming tank and has through holes. Steam treatment assembly, connected to the shroud and with through holes.

[0005] With the above structure, the NdFeB magnet degumming device of the present invention has the following advantages: the high-boiling-point liquid degumming medium set in the degumming tank can be heated to a temperature much higher than that of water, thereby quickly softening the glue on the magnet, improving degumming efficiency, and reducing energy consumption; at the same time, driven by the first pump, the high-boiling-point liquid degumming medium continuously circulates between the degumming tank and the filter tank. Impurities such as sludge in the high-boiling-point liquid degumming medium are trapped in the filter tank by the filter screen, which can automatically and continuously remove sludge and impurities generated during the degumming process, avoid the accumulation of impurities in the degumming tank, significantly reduce the frequency and labor intensity of manual cleaning, ensure the continuity of production and the purity of the degumming medium, thereby achieving high-boiling-point liquid degumming. The online purification and reuse of the degumming medium avoids the generation of large amounts of wastewater, exhaust gas, and dust, thus improving environmental friendliness and preventing collisions and friction with neodymium iron boron magnets, thereby reducing the defect rate. In addition, high-boiling-point liquid degumming media (such as glycerin) generate a large amount of water vapor at high temperatures. The water vapor continuously escapes from the degumming tank, causing steam to permeate the production site, reducing visibility, and creating a hot and humid environment, which seriously deteriorates the working environment of operators and poses safety hazards. Therefore, in this invention, by setting up a cover to cover the degumming tank and having the steam treatment component uniformly treat the steam, the problems of low visibility and hot and humid environment caused by high-temperature steam permeating the workshop are avoided, significantly improving the working environment and reducing safety hazards.

[0006] As an improvement, the heating tube is a hollow tube containing heating liquid inside. The heating assembly also includes a heater, a second pump body, a third pipe, and a fourth pipe. Both ends of the heating tube are inserted into the side wall of the degumming tank and protrude outside the tank. The heater is connected to the heating tube through the third and fourth pipes. The second pump body is connected in series on the third or fourth pipe. The second pump body drives the heating liquid to flow between the heating tube and the heater, and the heater heats the heating liquid. With this structure, using the heating liquid as the intermediate heat medium, physical isolation is achieved between the heater and the high-boiling-point liquid degumming medium, improving the safety and service life of the heater. The circulation of the heating liquid can uniformly and stably heat the heating tube, maintaining a stable heating temperature.

[0007] As an improvement, the second pump body is connected in series on the third pipeline, and the heating assembly also includes a feeding box connected in series on the fourth pipeline. The feeding box is equipped with a feeding funnel at the top. This structure provides a convenient feeding channel, which allows the heating liquid to be replenished through the feeding funnel without stopping the machine or affecting normal production. The operation is simple and safe, and it effectively maintains the stability and reliability of the heating system in the long term.

[0008] As an improvement, a first partition is provided inside the degumming tank. The first partition divides the degumming tank into a degumming zone above the first partition and a heating zone below the first partition. The heating tube is located in the heating zone. The first partition is used to place the neodymium iron boron magnets to be degummed. With this structure, the first partition effectively prevents the magnets to be degummed from directly contacting or hitting the heating tube at the bottom, avoiding damage and chipping caused by bumps, and reducing the defect rate.

[0009] As an improvement, a first port and a second port are respectively provided on the left and right side walls of the degumming tank. The first port is located in the heating zone, and the second port is located in the degumming zone. A first pipe is connected to the first port, and a second pipe is connected to the second port. With this structure, the flow of the high-boiling-point liquid degumming medium in the degumming tank can penetrate the entire degumming tank as much as possible, promoting the flow and circulation of the high-boiling-point liquid degumming medium in the degumming tank, and further improving the degumming efficiency.

[0010] As an improvement, the steam treatment assembly includes a shell, a heat exchanger, and a cooler. The shell is provided with a first air inlet, a second air inlet, a third air inlet, and a fourth air inlet. The shell is connected to a cover and covers a through hole, which is connected to the first air inlet. The heat exchanger is located inside the shell. The first air inlet is connected to the second air inlet through the inner cavity of the heat exchanger. The third air inlet is connected to the fourth air inlet through the fin gaps of the heat exchanger. The cooler is connected to the third air inlet and blows cold air into it. With this structure, the steam generated by the high-boiling-point liquid degumming medium (e.g., glycerin) in the degumming tank at high temperature is collected by the cover and enters the inner cavity of the heat exchanger inside the shell through the through hole and the first air inlet. At the same time, the cooler blows cold air into the third air inlet. The cold air flows through the fin gaps of the heat exchanger. During this process, the high-temperature steam undergoes heat exchange in the heat exchanger, and the steam is condensed into a liquid. The cooled non-condensable gas is discharged from the second air inlet. This solution, through forced condensation, avoids the problems of low visibility and humid, stuffy environment caused by high-temperature steam spreading in the workshop, significantly improving the working environment and reducing safety hazards.

[0011] As an improvement, a second partition is provided inside the shell, which divides the inner cavity of the shell into at least a first cavity and a second cavity. A first air outlet is located on the side wall of the first cavity, and a second air outlet is located on the side wall of the second cavity. A drain pipe is provided at the bottom of the second cavity. With this structure, the second partition makes the first cavity that carries steam and the second cavity that handles condensate relatively independent, avoiding airflow interference with the collection and discharge of condensate. The condensate can be concentrated at the bottom of the second cavity and discharged smoothly through the drain pipe, improving the stability and condensation efficiency of the system.

[0012] As an improvement, a conveyor belt is installed on the frame along the front-to-back direction. The middle part of the upper part of the conveyor belt is located in the degumming tank. The front and rear side walls of the enclosure have opposing openings, and each opening is rotatably connected to a baffle for closing or opening the opening. With this structure, the conveyor belt realizes the automated transport of neodymium iron boron magnets, improving the degumming efficiency. When it is necessary to transport neodymium iron boron magnets, the baffle can be opened so that the two opposing openings form a transport channel. During the degumming process, the two baffles close the openings to form a relatively closed enclosure structure, reducing steam leakage.

[0013] As an improvement, a lower cover is provided below the conveyor belt, and an oil drain pipe is provided at the bottom of the lower cover. An oil collection tank is provided on the frame below the oil drain pipe. With this structure, when the neodymium iron boron magnets are transported outside the degumming tank, the lower cover can collect the neodymium iron boron magnets and the high-boiling-point liquid degumming medium dripping from the conveyor belt and discharge them directionally from the oil drain pipe. The oil collection tank is used to collect the high-boiling-point liquid degumming medium, preventing the dripping high-boiling-point liquid degumming medium from contaminating the working environment.

[0014] As an improvement, the high-boiling-point liquid degumming medium is glycerol; with this structure, glycerol not only has a higher boiling point to improve degumming efficiency, but also has good heat preservation properties, further reducing energy consumption. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention with the steam treatment components hidden.

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention from another perspective after the steam treatment components are hidden.

[0017] Figure 3 This is a top view of the interior of the degumming tank in this invention.

[0018] Figure 4 This is a three-dimensional structural diagram of the heating tube in this invention.

[0019] Figure 5 This is a cross-sectional view of the present invention.

[0020] Figure 6 This is a schematic diagram of the steam treatment component in this invention.

[0021] Figure 7 This is a schematic diagram of the lower cover portion of the present invention.

[0022] Reference numerals: 1. Frame; 2. Degumming tank; 3. Circulating filter assembly; 31. First pump body; 32. Filter barrel; 33. First pipeline; 34. Second pipeline; 4. Heating assembly; 41. Heating tube; 42. Heater; 43. Second pump body; 44. Third pipeline; 45. Fourth pipeline; 46. Feeding box; 5. Cover; 6. Through hole; 7. Steam treatment assembly; 71. Shell; 72. Heat exchanger; 8. Feeding funnel; 9. First partition; 10. First port; 11. Second port; 12. First air outlet; 13. Second air outlet; 14. Third air outlet; 15. Fourth air outlet; 16. Second partition; 17. First cavity; 18. Second cavity; 19. Drain pipe; 20. Conveyor belt; 21. Baffle; 22. Lower cover; 23. Oil drain pipe; 24. Oil collection tank; 25. Third cavity; 26. Fourth cavity. Detailed Implementation

[0023] The following is a detailed description of a neodymium iron boron magnet degumming device according to the present invention, with reference to the accompanying drawings.

[0024] like Figures 1 to 7 As shown, a degumming device for neodymium iron boron magnets includes a frame 1, a degumming tank 2, a circulating filter assembly 3, a heating assembly 4, a cover 5, and a steam treatment assembly 7. The degumming tank 2 is mounted on the frame 1 and contains a high-boiling-point liquid degumming medium. Both the frame 1 and the degumming tank 2 are arranged along the front-to-back direction. The middle of the degumming tank 2 is recessed to form a groove for containing the high-boiling-point liquid degumming medium. The front and rear side walls of the groove are inclined, so that the degumming tank 2 has a structure with a large opening and a small bottom. The cover 5 is mounted on the upper end of the degumming tank 2, that is, located at the opening of the degumming tank 2. The cover 5 has a through hole 6.

[0025] like Figure 1 As shown, the circulating filtration assembly 3 includes a first pump body 31, a filter barrel 32, a first pipeline 33, and a second pipeline 34. The first pump body 31 and the filter barrel 32 are both connected to the frame 1. A filter screen is installed inside the filter barrel 32. The filter barrel 32 is connected to the degumming tank 2 via the first pipeline 33 and the second pipeline 34. The interfaces between the first pipeline 33 and the filter barrel 32, and between the second pipeline 34 and the filter barrel 32, are located on opposite sides of the filter screen. The first pump body 31 is connected in series on either the first pipeline 33 or the second pipeline 34. The first pump body 31 drives the high-boiling-point liquid degumming medium to flow between the filter barrel 32 and the degumming tank 2. Specifically, in this embodiment, the first pump body 31 is connected in series on the first pipeline 33. The filter screen is horizontally positioned inside the filter barrel 32. The interface between the first pipeline 33 and the filter barrel 32 is located below the filter screen, and the interface between the second pipeline 34 and the filter barrel 32 is located above the filter screen.

[0026] like Figure 2As shown, the heating assembly 4 includes a heating tube 41, a heater 42, a second pump body 43, a third pipeline 44, and a fourth pipeline 45. The heating tube 41 is disposed inside the degumming tank 2 and is a hollow pipeline containing heating liquid inside. Both ends of the heating tube 41 are inserted into the side wall of the degumming tank 2 and protrude outside the degumming tank 2. The heater 42 is connected to the heating tube 41 through the third pipeline 44 and the fourth pipeline 45. The second pump body 43 is connected in series on the third pipeline 44 or the fourth pipeline 45. The second pump body 43 drives the heating liquid to flow between the heating tube 41 and the heater 42, and the heater 42 heats the heating liquid. In this embodiment, both the first pump body 31 and the second pump body 43 are high-temperature oil pumps.

[0027] like Figure 3 As shown, the degumming tank 2 is provided with a first partition 9, which divides the degumming tank 2 into a degumming zone above the first partition 9 and a heating zone below the first partition 9. The heating tube 41 is located in the heating zone. The first partition 9 is used to place the neodymium iron boron magnets to be degummed.

[0028] like Figure 1 and Figure 2 As shown, the degumming tank 2 has a first port 10 and a second port 11 on its left and right side walls, respectively. The first port 10 is located in the heating zone, and the second port 11 is located in the degumming zone. The first pipe 33 is connected to the first port 10, and the second pipe 34 is connected to the second port 11.

[0029] like Figure 4 As shown, the heating tube 41 consists of two layers of coiled tubes arranged vertically and connected to each other. Specifically, one end of the two coiled tubes is connected to each other, while the other end of the two coiled tubes is inserted into the side wall of the degumming tank 2. The other end of the upper coiled tube is connected to the fourth pipe 45, and the other end of the lower coiled tube is connected to the third pipe 44.

[0030] Furthermore, the second pump body 43 is connected in series with the third pipeline 44, and the heating assembly 4 also includes a feeding box 46, which is connected in series with the fourth pipeline 45. The upper end of the feeding box 46 is provided with a feeding funnel 8.

[0031] A conveyor belt 20 is provided on the frame 1 along the front-to-back direction. The upper middle part of the conveyor belt 20 is located inside the degumming tank 2 and above the first partition 9. In this embodiment, the conveyor belt 20 is a stainless steel hinged conveyor belt. The front and rear side walls of the cover 5 are provided with opposing openings, and each opening is rotatably connected to a baffle 21 for closing or opening the opening. In this embodiment, the high-boiling-point liquid degumming medium is glycerin, and the degumming tank 2 is wrapped with insulation material to slow down the cooling of the glycerin.

[0032] like Figure 1 As shown, a lower cover 22 is provided below the conveyor belt 20. The lower cover 22 is connected to the frame 1. An oil drain pipe 23 is provided at the bottom of the lower cover 22. An oil collection tank 24 is provided on the frame 1 below the oil drain pipe 23.

[0033] The high-boiling-point liquid degumming medium (glycerol) set in the degumming tank 2 can be heated to a temperature much higher than that of water, thereby quickly softening the glue on the magnet, improving degumming efficiency and reducing energy consumption. At the same time, driven by the first pump 31, the high-boiling-point liquid degumming medium continuously circulates between the degumming tank 2 and the filter tank 32. Impurities such as sludge in the high-boiling-point liquid degumming medium are trapped in the filter tank 32 by the filter screen, which can automatically and continuously remove sludge and impurities generated during the degumming process, avoiding the accumulation of impurities in the degumming tank 2, significantly reducing the frequency and labor intensity of manual cleaning, ensuring the continuity of production and the purity of the degumming medium, thus realizing the online purification and reuse of the high-boiling-point liquid degumming medium, without generating a large amount of wastewater, exhaust gas, dust, etc., improving environmental protection, and avoiding collision and friction of neodymium iron boron magnets, reducing the defect rate.

[0034] The magnets to be degummed are automatically transported to the degumming tank 2 via conveyor belt 20. The glycerin can be heated to approximately 200 degrees Celsius, at which point the glue quickly dissolves and disperses. Water, on the other hand, can only be heated to a maximum of 100 degrees Celsius. To maintain the degumming temperature, continuous heating is required during the boiling process. For the same batch of products, boiling in water would take 1-2 hours, while this invention only requires 5-15 minutes to complete the degumming. Traditional water-boiling degumming has poor heat retention; after heating stops, the water cools down quickly. Glycerin, however, has good heat retention properties. Even after the machine is shut down at the end of the workday, the degumming tank 2 will maintain a temperature of approximately 150 degrees Celsius until the next workday, significantly reducing energy consumption.

[0035] In this invention, the magnets are transported without any tumbling or vibration during the entire degumming process, thus avoiding mechanical damage. It also eliminates the defects caused by collisions, scratches, and chipped corners common in traditional processes. Traditional degumming methods can only process a few kilograms or tens of kilograms of magnets at a time, resulting in low efficiency. In this invention, the magnets to be degummed can be directly placed on the conveyor belt 20, and the products enter the degumming tank 2 along with the conveyor belt 20 for degumming. New products to be degummed can then be placed on the conveyor belt 20. After degumming, the degummed products are transported out as the conveyor belt 20 runs, and products to be degummed are transported in. Depending on its size, the degumming tank 2 can hold 100 to 300 kilograms of magnets for degumming at a time, allowing for continuous transport of magnets into the degumming tank 2, significantly improving production speed and capacity.

[0036] The working environment of this invention is clean and tidy. Traditional processes generate a large amount of wastewater, exhaust gas, dust, etc., which increases the processing burden on enterprises. However, the degumming process of this invention produces no wastewater, exhaust gas, or other solid waste emissions. The oil sludge generated during cleaning is located in the filter bucket 32, making oil sludge collection convenient.

[0037] This invention uses a heating liquid (heat transfer oil) as an intermediate heat medium, which realizes the physical isolation between the heater 42 and the high-boiling-point liquid degumming medium, improving the safety and service life of the heater 42. The heating liquid circulation can uniformly and stably heat the heating tube 41, maintain the heating temperature stably, and can also automatically control the temperature by setting a temperature control system, such as setting a temperature sensor to detect the temperature of the heating liquid. Its specific structure and working principle are existing technologies and will not be described in detail here.

[0038] In addition, high-boiling-point liquid degumming media (such as glycerin) will generate a large amount of water vapor at high temperatures. The water vapor will continuously escape from the degumming tank 2, causing the production site to be filled with steam, reducing visibility, and creating a hot and humid environment. This seriously deteriorates the working environment of the operators and poses safety hazards. Therefore, the present invention also provides a steam treatment component 7, which is connected to the cover 5 and connected to the through hole 6.

[0039] Specifically, in this embodiment, the through hole 6 is located at the top of the cover 5; as shown Figure 6 As shown, the steam treatment assembly 7 includes a housing 71, a heat exchanger 72, and a cooler. The housing 71 is provided with a first air vent 12, a second air vent 13, a third air vent 14, and a fourth air vent 15. The housing 71 is connected to the cover 5 and covers the through hole 6, and the through hole 6 is connected to the first air vent 12. The housing 71 can cover the through hole 6 by directly covering the through hole 6 with the side wall of the housing 71, or by connecting the through hole 6 to the first air vent 12 through a separate pipeline. The heat exchanger 72 is located inside the shell 71. The first air outlet 12 is connected to the second air outlet 13 through the inner cavity of the heat exchanger 72, and the third air outlet 14 is connected to the fourth air outlet 15 through the fin gaps of the heat exchanger 72. Specifically, the heat exchanger 72 includes several copper tubes and several fins on the copper tubes. The fins are distributed along the axial direction of the copper tubes. The first air outlet 12 is connected to the second air outlet 13 through the inner cavity of the copper tubes, and the third air outlet 14 is connected to the fourth air outlet 15 through the fin gaps outside the copper tubes. The air cooler is connected to the third air outlet 14 and blows cold air into the third air outlet 14.

[0040] Continue to refer to Figure 6 The housing 71 is provided with a second partition 16, which divides the inner cavity of the housing 71 into at least a first cavity 17 and a second cavity 18. A first air vent 12 is provided on the side wall of the first cavity 17, and a second air vent 13 is provided on the side wall of the second cavity 18. A drain pipe 19 is provided at the bottom of the second cavity 18.

[0041] Furthermore, the second partition 16 further divides the inner cavity of the housing 71 into a third cavity 25 and a fourth cavity 26. The third air vent 14 is located on the side wall of the third cavity 25, and the fourth air vent 15 is located on the side wall of the fourth cavity 26.

[0042] The second partition 16 is cross-shaped, the first cavity 17 and the second cavity 18 are diagonally arranged, the third cavity 25 and the fourth cavity 26 are diagonally arranged, and the heat exchanger 72 is inclinedly embedded in the second partition 16.

[0043] In this embodiment, the first cavity 17 is located in the upper right corner, the second cavity 18 is located in the lower left corner, the third cavity 25 is located in the lower right corner, and the fourth cavity 26 is located in the upper left corner, which can prevent condensate from flowing back from the heat exchanger 72 into the first cavity 17.

[0044] The vapor generated by the high temperature of glycerin in the degumming tank 2 is collected by the cover 5 and enters the inner cavity of the heat exchanger 72 inside the shell 71 through the through hole 6 and the first air vent 12. At the same time, a cold air blower blows cold air into the third air vent 14. The cold air flows through the fin gaps of the heat exchanger 72. During this process, the high-temperature vapor undergoes heat exchange in the heat exchanger 72, and the vapor is condensed into a liquid. The cooled non-condensable gas is discharged from the second air vent 13. This scheme avoids the problems of low visibility and humid and stuffy environment caused by high-temperature vapor spreading in the workshop by using forced condensation, which significantly improves the working environment and reduces safety hazards. In addition, by setting up a drain pipe 19 to discharge the condensate in a specific direction, it prevents the condensate from flowing back into the degumming tank 2 and diluting the glycerin, thereby improving the degumming efficiency.

[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiment. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A degumming device for neodymium iron boron magnets, characterized in that, include: Rack (1); A degumming tank (2) is provided on the frame (1) and is equipped with a high-boiling-point liquid degumming medium; The circulating filtration assembly (3) includes a first pump body (31), a filter barrel (32), a first pipeline (33), and a second pipeline (34). The filter barrel (32) is equipped with a filter screen. The filter barrel (32) is connected to the degumming tank (2) through the first pipeline (33) and the second pipeline (34). The interface between the first pipeline (33) and the filter barrel (32) and the interface between the second pipeline (34) and the filter barrel (32) are respectively located on both sides of the filter screen. The first pump body (31) is connected in series on the first pipeline (33) or the second pipeline (34). The first pump body (31) drives the high-boiling-point liquid degumming medium to flow between the filter barrel (32) and the degumming tank (2). Heating assembly (4) includes heating tube (41) disposed in the degumming tank (2); Cover (5) is placed over the upper end of the degumming tank (2), and the cover (5) is provided with a through hole (6). A steam treatment assembly (7) is connected to the shroud (5) and communicates with the through hole (6).

2. The neodymium iron boron magnet degumming device according to claim 1, characterized in that, The heating tube (41) is a hollow tube with heating liquid inside. The heating assembly (4) also includes a heater (42), a second pump body (43), a third pipe (44), and a fourth pipe (45). Both ends of the heating tube (41) are inserted into the side wall of the degumming tank (2) and exposed outside the degumming tank (2). The heater (42) is connected to the heating tube (41) through the third pipe (44) and the fourth pipe (45). The second pump body (43) is connected in series on the third pipe (44) or the fourth pipe (45). The second pump body (43) drives the heating liquid to flow between the heating tube (41) and the heater (42) and the heater (42) heats the heating liquid.

3. The neodymium iron boron magnet degumming device according to claim 2, characterized in that, The second pump body (43) is connected in series on the third pipeline (44), and the heating assembly (4) also includes a feeding box (46), which is connected in series on the fourth pipeline (45). The feeding box (46) is provided with a feeding funnel (8) at the upper end.

4. The neodymium iron boron magnet degumming device according to claim 1, characterized in that, The degumming tank (2) is provided with a first partition (9), which divides the degumming tank (2) into a degumming zone above the first partition (9) and a heating zone below the first partition (9). The heating tube (41) is located in the heating zone. The first partition (9) is used to place the neodymium iron boron magnets to be degummed.

5. The neodymium iron boron magnet degumming device according to claim 4, characterized in that, The degumming tank (2) has a first port (10) and a second port (11) on its left and right side walls, respectively. The first port (10) is located in the heating zone, and the second port (11) is located in the degumming zone. The first pipe (33) is connected to the first port (10), and the second pipe (34) is connected to the second port (11).

6. The neodymium iron boron magnet degumming device according to claim 1, characterized in that, The steam treatment assembly (7) includes a housing (71), a heat exchanger (72), and a cold air blower. The housing (71) is provided with a first air outlet (12), a second air outlet (13), a third air outlet (14), and a fourth air outlet (15). The housing (71) is connected to the cover (5) and covers the through hole (6), and the through hole (6) is connected to the first air outlet (12). The heat exchanger (72) is located inside the housing (71). The first air outlet (12) is connected to the second air outlet (13) through the inner cavity of the heat exchanger (72). The third air outlet (14) is connected to the fourth air outlet (15) through the fin gap of the heat exchanger (72). The cold air blower is connected to the third air outlet (14) and blows cold air to the third air outlet (14).

7. The neodymium iron boron magnet degumming device according to claim 6, characterized in that, The housing (71) is provided with a second partition (16), which divides the inner cavity of the housing (71) into at least a first cavity (17) and a second cavity (18). The first air vent (12) is provided on the side wall of the first cavity (17), and the second air vent (13) is provided on the side wall of the second cavity (18). The bottom end of the second cavity (18) is provided with a drain pipe (19).

8. The neodymium iron boron magnet degumming device according to claim 1, characterized in that, The frame (1) is provided with a conveyor belt (20) along the front-back direction. The middle part of the upper part of the conveyor belt (20) is located in the degumming tank (2). The front and rear side walls of the cover (5) are provided with opposite openings. Each opening is rotatably connected with a baffle (21) for closing or opening the opening.

9. The neodymium iron boron magnet degumming device according to claim 8, characterized in that, The conveyor belt (20) is provided with a lower cover (22) below it, and the bottom end of the lower cover (22) is provided with an oil drain pipe (23). The frame (1) is provided with an oil collection tank (24) located below the oil drain pipe (23).

10. The neodymium iron boron magnet degumming device according to claim 1, characterized in that, The high-boiling-point liquid degumming medium is glycerol.

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