High-quality temperature-control neodymium-iron-boron magnet heat treatment mechanism

By designing a high-quality temperature-controlled NdFeB magnet heat treatment mechanism, and utilizing a pressure box and purification system to extract and purify toxic gases in the furnace, the problem of gas pollution during the sintering process of NdFeB magnets has been solved, achieving environmentally friendly production.

CN223940003UActive Publication Date: 2026-02-24ZHEJIANG YOUHONG NEW MATERIAL TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520636196.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-07
Publication Date
2026-02-24
Estimated Expiration
2035-04-07

AI Technical Summary

Technical Problem

The toxic gases produced during the sintering process of neodymium iron boron magnets can pollute the environment and endanger the health of factory workers.

Method used

A high-quality temperature-controlled NdFeB magnet heat treatment mechanism was designed, including a furnace, a working plate, a pressure box, and a purification system. The pressure motor drives the rotating screw to move the moving plate in the pressure box, using pressure to draw in and purify the toxic gases in the furnace, avoiding direct emission into the air.

Benefits of technology

The system effectively extracts and purifies toxic gases from the furnace, preventing environmental pollution and harm to workers' health, thus achieving a safe and environmentally friendly production process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of neodymium-iron-boron magnet heat treatment, and discloses a high-quality temperature control neodymium-iron-boron magnet heat treatment mechanism which comprises a smelting furnace and a working plate, toxic gas in the smelting furnace is extracted through a pressure extraction box on the working plate, and a pressure extraction motor on the pressure extraction box drives a rotating screw rod to rotate; the rotating rotating screw drives the moving plate to move in the pressure pumping box, the moving plate forms pressure through movement, poisonous gas in the smelting furnace is pumped into the pressure pumping box through the connecting pipe and then exhausted through the pressure pumping box to be purified, and when the moving plate moves towards the connecting pipe, the rotating block can rotate on the rotating shaft, so that the poisonous gas in the smelting furnace is purified. And then, when the movable plate is far away from the connecting pipe, toxic gas in the smelting furnace can be better pumped out, so that the toxic gas in the smelting furnace can be continuously pumped out and purified, and the situation that the toxic gas is directly discharged into air to pollute the environment after materials are refined is avoided.
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Description

Technical Field

[0001] This utility model relates to the field of heat treatment of neodymium iron boron magnets, specifically to a high-quality temperature-controlled heat treatment mechanism for neodymium iron boron magnets. Background Technology

[0002] Neodymium iron boron magnets, also known as neodymium iron boron magnets, are tetragonal crystals formed by neodymium, iron, and boron (Nd2Fe14B). They belong to rare earth permanent magnet materials and are high-performance and widely used permanent magnet materials.

[0003] The raw materials for making neodymium iron boron magnets are placed in a melting furnace, and then the melting furnace is evacuated to allow the raw materials to sinter in a vacuum environment. This is to avoid oxidation and contamination of the magnets. During the sintering process, the temperature inside the melting furnace is constantly adjusted to ensure the magnetic properties and stability of the magnets.

[0004] In existing technology, the raw materials for making NdFeB magnets are placed in a smelting furnace and then the furnace is evacuated to prevent oxidation and contamination of the raw materials. However, a large amount of toxic gas is generated when the NdFeB magnet raw materials are sintered. These toxic gases will escape when the furnace is opened, which will seriously pollute the environment and also endanger the health of the workers in the factory area. Utility Model Content

[0005] The purpose of this utility model is to provide a high-quality temperature-controlled NdFeB magnet heat treatment mechanism to solve the following technical problems;

[0006] The sintering of NdFeB magnet raw materials generates a large amount of toxic gases. These toxic gases escape when the furnace is opened, causing serious environmental pollution and endangering the health of workers in the factory area.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A high-quality temperature-controlled NdFeB magnet heat treatment mechanism includes a furnace and a work plate; the furnace is located below the work plate; a movable sealing assembly is provided on the work plate; the movable sealing assembly includes a sealing cover; a pressure box is fixedly connected to the work plate; a connecting pipe is fixedly connected to one side of the pressure box; the other end of the connecting pipe is fixedly connected to the sealing cover; a rotating screw is rotatably connected inside the pressure box; a pressure pump motor is fixedly connected to one end of the pressure box; the pressure pump motor is connected to the rotating screw; a movable plate is rotatably connected to the rotating screw; a rotating shaft is fixedly connected to the movable plate; and a rotating block is rotatably connected to the rotating shaft.

[0009] Furthermore, a limiting shaft is fixedly connected inside the pressure box; a connecting block is rotatably connected to the limiting shaft; and a sealing block is fixedly connected to the bottom of the connecting block.

[0010] Furthermore, a support rod is slidably connected to the work plate; two support rods are provided and symmetrically arranged on the work plate; a connecting plate is fixedly connected to the top of the support rod; an extension plate is fixedly connected to the connecting plate; a toothed plate is fixedly connected to the bottom of the extension plate; a sealing cover is fixedly connected to the bottom of the support rod; the other end of the toothed plate is fixedly connected to the sealing cover; a fixing block is fixedly connected to the work plate; a lifting gear is rotatably connected to the fixing block; a lifting motor is fixedly connected to the other end of the fixing block; the lifting motor communicates with the lifting gear.

[0011] Furthermore, a purification box is fixedly connected to one side of the pressure box on the work plate; a flue is fixedly connected to the top of the pressure box; the other end of the flue is fixedly connected to the purification box; and an exhaust pipe is fixedly connected to the purification box.

[0012] Furthermore, a water supply pipe is fixedly connected to one side of the purification box; a valve is fixedly connected to the water supply pipe.

[0013] Furthermore, a fixing screw is fixedly connected to the working plate; four fixing screws are provided and are respectively arranged at the four corners of the working plate; a fixing nut is rotatably connected to the fixing screw.

[0014] Furthermore, a limiting column is fixedly connected inside the pressure box; the movable plate is slidably disposed on the limiting column.

[0015] The beneficial effects of this utility model are:

[0016] (1) The toxic gas in the furnace is extracted by the pressure box on the working plate. The pressure extraction motor on the pressure box drives the rotating screw to rotate. The rotating screw drives the moving plate to move in the pressure box. The moving plate creates pressure by moving, so that the toxic gas in the furnace is extracted into the pressure box through the connecting pipe and then discharged through the pressure box for purification. When the moving plate moves towards the connecting pipe, the rotating block will rotate on the rotating shaft, thereby using pressure to vent the gas. When the moving plate moves away from the connecting pipe, it can better extract the toxic gas in the furnace. This setting is to continuously extract and purify the toxic gas in the furnace, and avoid the toxic gas being directly released into the air and polluting the environment after the material is refined. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a frontal perspective view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the furnace in this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a cross-sectional view of the pressure box in this utility model;

[0022] Figure 5 This is a left-side perspective view of the present invention.

[0023] Figure Descriptions: 1. Furnace; 2. Working Plate; 3. Fixing Screw; 4. Fixing Nut; 5. Sealing Cap; 6. Water Supply Pipe; 7. Valve; 8. Purification Box; 9. Exhaust Pipe; 10. Smoke Pipe; 11. Pressure Tank; 12. Pressure Pump Motor; 13. Connecting Plate; 14. Support Rod; 15. Connecting Pipe; 16. Extension Plate; 17. Gear Plate; 18. Lifting Motor; 19. Fixing Block; 20. Lifting Gear; 21. Rotating Screw; 22. Limiting Shaft; 23. Connecting Block; 24. Sealing Block; 25. Limiting Column; 26. Moving Plate; 27. Rotating Block; 28. Rotating Shaft. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 5 As shown, this utility model is a high-quality temperature-controlled NdFeB magnet heat treatment mechanism, including a furnace 1 and a working plate 2; the furnace 1 is located below the working plate 2; a movable sealing assembly is provided on the working plate 2; the movable sealing assembly includes a sealing cover 5; a pressure box 11 is fixedly connected to the working plate 2; a connecting pipe 15 is fixedly connected to one side of the pressure box 11; the other end of the connecting pipe 15 is fixedly connected to the sealing cover 5; a rotating screw 21 is rotatably connected inside the pressure box 11; a pressure pump motor 12 is fixedly connected to one end of the pressure box 11; the pressure pump motor 12 is connected to the rotating screw 21; a movable plate 26 is rotatably connected to the rotating screw 21; a rotating shaft 28 is fixedly connected to the movable plate 26; a rotating block 27 is rotatably connected to the rotating shaft 28.

[0026] The material for making neodymium iron boron magnets is placed in furnace 1, where it is melted and refined. This refining process generates toxic gases. To prevent these gases from polluting the environment and harming workers in the factory area, the sealing cap 5 on the movable sealing assembly seals furnace 1, preventing the toxic gases from escaping. Then, the pressure extraction box 11 on the working plate 2 extracts the toxic gases from furnace 1. The pressure extraction motor 12 on the pressure extraction box 11 drives the rotating screw 21 to rotate. The rotating screw 21 moves the movable plate 26 within the pressure extraction box 11, creating pressure through its movement, thus forcing the molten metal to melt. Toxic gases in furnace 1 are drawn into pressure box 11 through connecting pipe 15, and then discharged through pressure box 11 for purification. When moving plate 26 moves toward connecting pipe 15, rotating block 27 rotates on rotating shaft 28, thereby using pressure to vent the gas. A baffle is provided on the side of moving plate 26 near connecting pipe 15 to prevent rotating block 27 from being sucked in the opposite direction. When moving plate 26 moves away from connecting pipe 15, it can better extract toxic gases from furnace 1. This setting is to continuously extract and purify toxic gases from furnace 1, avoiding the direct release of toxic gases into the air and pollution of the environment after the material is refined.

[0027] Please refer to the attached image. Figure 2 , Figure 3 and Figure 4 As shown, specifically, a limiting shaft 22 is fixedly connected inside the pressure box 11; a connecting block 23 is rotatably connected to the limiting shaft 22; a sealing block 24 is fixedly connected to the bottom of the connecting block 23; during operation, when the moving plate 26 approaches the connecting pipe 15, the connecting block 23 and the sealing block 24 on the limiting shaft 22 will block the connecting pipe 15; when the moving plate 26 moves away from the connecting pipe 15, the sealing block 24 will be pushed open by the pressure, thereby allowing toxic gas to enter the pressure box 11.

[0028] Please refer to the attached image. Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, specifically, a support rod 14 is slidably connected to the working plate 2; two support rods 14 are provided and symmetrically arranged on the working plate 2; a connecting plate 13 is fixedly connected to the top of the support rod 14; an extension plate 16 is fixedly connected to the connecting plate 13; a toothed plate 17 is fixedly connected to the bottom of the extension plate 16; a sealing cover 5 is fixedly connected to the bottom of the support rod 14; the other end of the toothed plate 17 is fixedly connected to the sealing cover 5; a fixing block 19 is fixedly connected to the working plate 2; a lifting gear 20 is rotatably connected to the fixing block 19; a lifting motor 18 is fixedly connected to the other end of the fixing block 19; the lifting motor 18 communicates with the lifting gear 20; during operation, the lifting motor 18 drives the lifting gear 20 to rotate on the fixing block 19. The lifting gear 20 meshes with the toothed plate 17, so the rotation of the lifting gear 20 will drive the toothed plate 17 to rise or fall, thereby causing the support rod 14 to move the sealing cover 5. This arrangement is to control the sealing cover 5 to seal and open.

[0029] Please refer to the attached image. Figure 1 , Figure 4 and Figure 5 As shown, specifically, a purification box 8 is fixedly connected to one side of the pressure box 11 on the working plate 2; a smoke pipe 10 is fixedly connected to the top of the pressure box 11; the other end of the smoke pipe 10 is fixedly connected to the purification box 8; an exhaust pipe 9 is fixedly connected to the purification box 8; during operation, the toxic gas extracted by the pressure box 11 will be discharged into the purification box 8 through the smoke pipe 10. The purification box 8 contains a solution for purifying toxic gas. The smoke pipe 10 passes through the purification box 8 and is inserted into the solution in the purification box 8. In this way, the toxic gas is directly discharged into the solution in the purification box 8, allowing the solution to react with the toxic gas and purify the gas.

[0030] Please refer to the attached image. Figure 1 , Figure 4 and Figure 5 As shown, specifically, a water supply pipe 6 is fixedly connected to one side of the purification tank 8; a valve 7 is fixedly connected to the water supply pipe 6; during operation, purification solution is supplied to the purification tank 8 through the water supply pipe 6, and the valve 7 on the water supply pipe 6 controls the flow of the solution.

[0031] Please refer to the attached image. Figure 1 , Figure 2 and Figure 5 As shown, specifically, a fixing screw 3 is fixedly connected to the working plate 2; four fixing screws 3 are provided and are respectively arranged at the four corners of the working plate 2; a fixing nut 4 is rotatably connected to the fixing screw 3; during operation, by passing the fixing screw 3 through the external fixing component, and then the fixing nut 4 is threadedly engaged with the fixing screw 3, the working plate 2 can be firmly fixed.

[0032] Please refer to the attached image. Figure 2 , Figure 3 and Figure 4 As shown, specifically, a limiting post 25 is fixedly connected inside the pressure box 11; the moving plate 26 is slidably disposed on the limiting post 25; during operation, when the rotating screw 21 drives the moving plate 26 to move, in order to prevent the moving plate 26 from deflecting, the moving plate 26 is allowed to slide on the limiting post 25, so that the moving plate 26 can only move in the direction set by the limiting post 25, thus preventing the moving plate 26 from deflecting.

[0033] The working principle of this utility model is as follows: The material for making neodymium iron boron magnets is placed in a furnace 1, where it is melted and refined. During this refining process, toxic gases are generated. To prevent these gases from polluting the environment and harming personnel working in the factory area, the sealing cover 5 on the movable sealing assembly seals the furnace 1 to prevent the toxic gases from escaping. Then, the toxic gases are extracted from the furnace 1 by a pressure extraction box 11 on the working plate 2. The pressure extraction motor 12 on the pressure extraction box 11 drives the rotating screw 21 to rotate. The rotating screw 21 drives the movable plate 26 to move within the pressure extraction box 11. The movable plate 26 forms... The pressure causes the toxic gases in the furnace 1 to be drawn into the pressure box 11 through the connecting pipe 15, and then discharged through the pressure box 11 for purification. When the moving plate 26 moves toward the connecting pipe 15, the rotating block 27 will rotate on the rotating shaft 28, thereby using pressure to vent the gas. The moving plate 26 is equipped with a baffle on the side near the connecting pipe 15 to prevent the rotating block 27 from being sucked in the opposite direction. When the moving plate 26 moves away from the connecting pipe 15, it can better extract the toxic gases in the furnace 1. This setting is to continuously extract and purify the toxic gases in the furnace 1, and to avoid the direct release of toxic gases into the air and polluting the environment after the material is refined.

[0034] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A high-quality temperature-controlled NdFeB magnet heat treatment mechanism, characterized in that, The system includes a furnace (1) and a work plate (2); the furnace (1) is located below the work plate (2); a movable sealing assembly is provided on the work plate (2); the movable sealing assembly includes a sealing cover (5); a pressure box (11) is fixedly connected to the work plate (2); a connecting pipe (15) is fixedly connected to one side of the pressure box (11); the other end of the connecting pipe (15) is fixedly connected to the sealing cover (5); a rotating screw (21) is rotatably connected inside the pressure box (11); a pressure pump motor (12) is fixedly connected to one end of the pressure box (11); the pressure pump motor (12) is connected to the rotating screw (21); a movable plate (26) is rotatably connected to the rotating screw (21); a rotating shaft (28) is fixedly connected to the movable plate (26); and a rotating block (27) is rotatably connected to the rotating shaft (28).

2. The high-quality temperature-controlled NdFeB magnet heat treatment mechanism according to claim 1, characterized in that, A limiting shaft (22) is fixedly connected inside the pressure box (11); a connecting block (23) is rotatably connected to the limiting shaft (22); and a sealing block (24) is fixedly connected to the bottom of the connecting block (23).

3. The high-quality temperature-controlled NdFeB magnet heat treatment mechanism according to claim 2, characterized in that, A support rod (14) is slidably connected to the working plate (2); two support rods (14) are provided and symmetrically arranged on the working plate (2); a connecting plate (13) is fixedly connected to the top of the support rod (14); an extension plate (16) is fixedly connected to the connecting plate (13); a toothed plate (17) is fixedly connected to the bottom of the extension plate (16); a sealing cover (5) is fixedly connected to the bottom of the support rod (14); the other end of the toothed plate (17) is fixedly connected to the sealing cover (5); a fixing block (19) is fixedly connected to the working plate (2); a lifting gear (20) is rotatably connected to the fixing block (19); a lifting motor (18) is fixedly connected to the other end of the fixing block (19); the lifting motor (18) is connected to the lifting gear (20).

4. The high-quality temperature-controlled NdFeB magnet heat treatment mechanism according to claim 3, characterized in that, A purification box (8) is fixedly connected to the working plate (2) on one side of the pressure box (11); a smoke pipe (10) is fixedly connected to the top of the pressure box (11); the other end of the smoke pipe (10) is fixedly connected to the purification box (8); and an exhaust pipe (9) is fixedly connected to the purification box (8).

5. The high-quality temperature-controlled NdFeB magnet heat treatment mechanism according to claim 4, characterized in that, A water supply pipe (6) is fixedly connected to one side of the purification box (8); a valve (7) is fixedly connected to the water supply pipe (6).

6. The high-quality temperature-controlled NdFeB magnet heat treatment mechanism according to claim 1, characterized in that, A fixing screw (3) is fixedly connected to the working plate (2); four fixing screws (3) are provided and are respectively arranged at the four corners of the working plate (2); a fixing nut (4) is rotatably connected to the fixing screw (3).

7. The high-quality temperature-controlled NdFeB magnet heat treatment mechanism according to claim 1, characterized in that, A limiting post (25) is fixedly connected inside the pressure box (11); the movable plate (26) is slidably disposed on the limiting post (25).