A steam treatment system for degreasing of neodymium iron boron magnets

Abstract

The utility model provides a kind of for neodymium iron boron magnet degumming steam treatment system, it is related to neodymium iron boron magnet processing technical field, to solve the technical problem that a large amount of steam deteriorates working environment in prior art is generated when using glycerol as degumming medium to degum neodymium iron boron magnet;A kind of for neodymium iron boron magnet degumming steam treatment system, including degumming pool, cover body, shell, heat exchanger and air cooler, cover body is covered in the degumming pool upper end, cover body is equipped with through-hole, shell is equipped with first air port, second air port, third air port and fourth air port, shell is equipped on cover body and covers through-hole and through-hole is communicated with first air port, heat exchanger is located in shell, first air port is communicated with second air port by heat exchanger inner cavity, third air port is communicated with fourth air port by the fin gap of heat exchanger, air cooler is communicated with third air port and blows cold wind to third air port.

Description

Technical Field

[0001] This utility model relates to the field of neodymium iron boron magnet processing technology, specifically to a steam treatment system for degumming neodymium iron boron magnets. 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 most common degumming method used in the industry is boiling water degumming. This 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 water soften and deactivate the adhesive. However, due to the boiling point limitation of water, the maximum degumming temperature can only reach 100 degrees Celsius, resulting in low degumming efficiency. It typically requires boiling for 1 to 2 hours or even longer to complete the process, which is time-consuming and wasteful of energy.

[0003] In the search for higher degumming efficiency, some in the industry have attempted to replace water with glycerin, which has a higher boiling point, hoping to shorten degumming time by increasing the operating temperature. However, when glycerin is heated to temperatures far above the boiling point of water (e.g., 150°C to 200°C), and when glycerin is continuously heated to such high temperatures, a large amount of high-temperature, high-concentration steam is generated. If this steam is not properly treated, it will continuously escape from the opening of the degumming tank, resulting in a steam-filled production area, reduced visibility, a hot and humid environment, severely deteriorating the working conditions for operators and posing safety hazards. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a steam treatment system for degumming neodymium iron boron magnets, thereby solving the technical problem that using glycerol as a degumming medium in the prior art to degumme neodymium iron boron magnets generates a large amount of steam that degrades the working environment.

[0005] To solve the above-mentioned technical problems, this utility model provides a steam treatment system for degumming neodymium iron boron magnets, comprising: Degumming tank; The cover is placed over the upper end of the degumming tank and has through holes. The housing has a first air vent, a second air vent, a third air vent, and a fourth air vent. The housing is mounted on the cover and covers the through holes, which are connected to the first air vent. The heat exchanger is located inside the shell. The first air outlet is connected to the second air outlet through the inner cavity of the heat exchanger, and the third air outlet is connected to the fourth air outlet through the fin gap of the heat exchanger. The air cooler is connected to the third air vent and blows cold air into the third air vent.

[0006] With the above structure, the steam treatment system for degumming neodymium iron boron magnets of this invention has the following advantages: Steam generated by glycerin at high temperature in the degumming tank is collected by the shroud and enters the heat exchanger cavity inside the shell through through holes and the first air inlet; simultaneously, a cold air blower blows cold air into the third air inlet, and the cold air flows through the fin gaps of the heat exchanger. During this process, the high-temperature steam undergoes heat exchange within the heat exchanger, and the steam is condensed into a liquid state. The cooled non-condensable gas is then discharged from the second air inlet. This solution, through forced condensation, avoids the problems of low visibility and a humid, stuffy environment caused by high-temperature steam permeating the workshop, significantly improving the working environment and reducing safety hazards.

[0007] As an improvement, a 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 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, which improves the stability and condensation efficiency of the system.

[0008] As an improvement, the baffle further divides the inner cavity of the shell into a third cavity and a fourth cavity. The third air outlet is located on the side wall of the third cavity, and the fourth air outlet is located on the side wall of the fourth cavity. With this structure, independent flow channels for the hot and cold media are formed. A closed channel is established for the cold air, which is completely isolated from the steam flow channel. It enters from the third air outlet, flows through the fin gaps, and exits from the fourth air outlet. This ensures the efficient and concentrated utilization of the cooling capacity and avoids the mixing of hot and cold airflows, thereby maximizing the heat exchange efficiency.

[0009] As an improvement, the partition is cross-shaped, with the first and second chambers diagonally arranged, and the third and fourth chambers diagonally arranged, and the heat exchanger is inclinedly embedded in the partition.

[0010] As an improvement, the two opposite side walls of the enclosure are provided with opposite openings, and each opening is rotatably connected to a baffle for closing or opening the opening. With this structure, when neodymium iron boron magnets need to be transported, the baffles can be opened so that the two opposite openings form a transport channel, while during the degumming process, the two baffles close the openings to form a relatively closed enclosure structure, reducing steam leakage.

[0011] As an improvement, this utility model also includes a conveyor belt, with the middle part of the upper part of the conveyor belt located in the degumming tank; with this structure, the automatic conveying of neodymium iron boron magnets is realized, and the degumming efficiency is improved.

[0012] 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. 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 glycerin dripping from the conveyor belt and discharge them in a directional manner from the oil drain pipe, preventing the dripping glycerin from contaminating the working environment.

[0013] As an improvement, an oil collection tank is installed below the oil drain pipe; this structure facilitates the recovery of dripping glycerin. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention with the shell portion hidden.

[0015] Figure 2 This is a schematic diagram of the shell portion of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the lower cover portion of this utility model.

[0017] Reference numerals: 1. Degumming tank; 2. Cover; 3. Through hole; 4. Shell; 5. First air outlet; 6. Second air outlet; 7. Third air outlet; 8. Fourth air outlet; 9. Heat exchanger; 10. Baffle; 11. First cavity; 12. Second cavity; 13. Drain pipe; 14. Third cavity; 15. Fourth cavity; 16. Baffle; 17. Conveyor belt; 18. Lower cover; 19. Oil drain pipe; 20. Oil collection tank. Detailed Implementation

[0018] The following is a detailed description of a steam treatment system for degumming neodymium iron boron magnets according to the present invention, with reference to the accompanying drawings.

[0019] like Figures 1 to 3 As shown, a steam treatment system for degumming neodymium iron boron magnets includes a degumming tank 1, a cover 2, a shell 4, a heat exchanger 9, and a cold air blower. Glycerin is provided in the degumming tank 1 as the degumming medium, and a heating pipe is provided in the degumming tank 1 to heat the glycerin. In addition, this utility model also includes a conveyor belt 17, the middle part of the upper part of the conveyor belt 17 is located in the degumming tank 1. Specifically, the conveyor belt 17 is arranged in a left-right direction to transport neodymium iron boron magnets from left to right. The middle part of the upper part of the conveyor belt 17 is immersed in the degumming tank 1, so glycerin will adhere to the conveyor belt 17. The neodymium iron boron magnets sent out of the degumming tank 1 will also be covered with glycerin and drip onto the conveyor belt 17. Therefore, a lower cover 18 is provided below the conveyor belt 17, and an oil drain pipe 19 is provided at the bottom of the lower cover 18. An oil collection tank 20 is provided below the oil drain pipe 19.

[0020] Specifically, the degumming tank 1 and the conveyor belt 17 are both connected to the frame, the lower cover 18 is also connected to the frame and located below the conveyor belt 17, and the oil collection tank 20 is also set on the frame.

[0021] like Figure 1 As shown, the cover 2 is installed over the upper end of the degumming tank 1, and the cover 2 is provided with a through hole 3; as Figure 1 As shown, the cover 2 has two opposite side walls with opposite openings, and each opening is rotatably connected to a baffle 16 for closing or opening the opening; in this embodiment, the openings are set on the left and right end faces of the cover 2, which match the conveying direction of the conveyor belt 17.

[0022] In this embodiment, the through hole 3 is located at the top of the cover 2; as shown Figure 2 As shown, the housing 4 is provided with a first air vent 5, a second air vent 6, a third air vent 7 and a fourth air vent 8. The housing 4 is located on the cover 2 and covers the through hole 3 and the through hole 3 is connected to the first air vent 5. The housing 4 can cover the through hole 3 by directly covering the through hole 3 with the side wall of the housing 4, or by connecting the through hole 3 to the first air vent 5 through another pipeline.

[0023] The heat exchanger 9 is located inside the shell 4. The first air outlet 5 is connected to the second air outlet 6 through the inner cavity of the heat exchanger 9, and the third air outlet 7 is connected to the fourth air outlet 8 through the fin gaps of the heat exchanger 9. Specifically, the heat exchanger 9 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 5 is connected to the second air outlet 6 through the inner cavity of the copper tubes, and the third air outlet 7 is connected to the fourth air outlet 8 through the fin gaps outside the copper tubes. The air cooler is connected to the third air outlet 7 and blows cold air into the third air outlet 7.

[0024] The housing 4 is provided with a partition 10, which divides the inner cavity of the housing 4 into at least a first cavity 11 and a second cavity 12. A first air vent 5 is provided on the side wall of the first cavity 11, and a second air vent 6 is provided on the side wall of the second cavity 12. A drain pipe 13 is provided at the bottom of the second cavity 12.

[0025] Furthermore, the partition 10 further divides the inner cavity of the housing 4 into a third cavity 14 and a fourth cavity 15. The third air vent 7 is located on the side wall of the third cavity 14, and the fourth air vent 8 is located on the side wall of the fourth cavity 15.

[0026] The partition 10 is cross-shaped, the first cavity 11 and the second cavity 12 are diagonally arranged, the third cavity 14 and the fourth cavity 15 are diagonally arranged, and the heat exchanger 9 is inclinedly embedded in the partition 10.

[0027] In this embodiment, the first cavity 11 is located in the upper right corner, the second cavity 12 is located in the lower left corner, the third cavity 14 is located in the lower right corner, and the fourth cavity 15 is located in the upper left corner, which can prevent condensate from flowing back from the heat exchanger 9 into the first cavity 11.

[0028] In the degumming tank 1, the vapor generated by the high temperature of glycerin is collected by the cover 2 and enters the inner cavity of the heat exchanger 9 inside the shell 4 through the through hole 3 and the first air vent 5. At the same time, a cold air blower blows cold air into the third air vent 7. The cold air flows through the fin gaps of the heat exchanger 9. During this process, the high-temperature vapor undergoes heat exchange in the heat exchanger 9, and the vapor is condensed into a liquid. The cooled non-condensable gas is discharged from the second air vent 6. This scheme avoids the problems of low visibility and humid and stuffy environment caused by the 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 13 to discharge the condensate in a specific direction, it prevents the condensate from flowing back into the degumming tank 1 and diluting the glycerin, thereby improving the degumming efficiency.

[0029] 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 steam treatment system for degumming neodymium iron boron magnets, characterized in that, include: Degumming tank (1); Cover (2) is placed over the upper end of the degumming tank (1), and the cover (2) is provided with through holes (3). The housing (4) is provided with a first air vent (5), a second air vent (6), a third air vent (7) and a fourth air vent (8). The housing (4) is disposed on the cover (2) and covers the through hole (3), and the through hole (3) is connected to the first air vent (5). A heat exchanger (9) is disposed inside the housing (4). The first air outlet (5) is connected to the second air outlet (6) through the inner cavity of the heat exchanger (9). The third air outlet (7) is connected to the fourth air outlet (8) through the fin gap of the heat exchanger (9). A cool air blower is connected to the third air outlet (7) and blows cool air into the third air outlet (7).

2. The steam treatment system for degumming neodymium iron boron magnets according to claim 1, characterized in that, The housing (4) is provided with a partition (10), which divides the inner cavity of the housing (4) into at least a first cavity (11) and a second cavity (12). The first air vent (5) is provided on the side wall of the first cavity (11), and the second air vent (6) is provided on the side wall of the second cavity (12). The bottom end of the second cavity (12) is provided with a drain pipe (13).

3. The steam treatment system for degumming neodymium iron boron magnets according to claim 2, characterized in that, The partition (10) further divides the inner cavity of the housing (4) into a third cavity (14) and a fourth cavity (15). The third air vent (7) is located on the side wall of the third cavity (14), and the fourth air vent (8) is located on the side wall of the fourth cavity (15).

4. The steam treatment system for degumming neodymium iron boron magnets according to claim 3, characterized in that, The partition (10) is cross-shaped, the first cavity (11) and the second cavity (12) are diagonally arranged, the third cavity (14) and the fourth cavity (15) are diagonally arranged, and the heat exchanger (9) is inclinedly embedded in the partition (10).

5. The steam treatment system for degumming neodymium iron boron magnets according to claim 1, characterized in that, The cover (2) has two opposite side walls with opposite openings, and each opening is rotatably connected to a baffle (16) for closing or opening the opening.

6. The steam treatment system for degumming neodymium iron boron magnets according to claim 1, characterized in that, It also includes a conveyor belt (17), the upper middle part of which is located in the degumming tank (1).

7. The steam treatment system for degumming neodymium iron boron magnets according to claim 6, characterized in that, The conveyor belt (17) is provided with a lower cover (18) below it, and the bottom end of the lower cover (18) is provided with an oil drain pipe (19).

8. The steam treatment system for degumming neodymium iron boron magnets according to claim 7, characterized in that, An oil collection tank (20) is provided below the oil drain pipe (19).

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