Atmosphere protection device for preparing neodymium-iron-boron slurry

Abstract

The utility model relates to the technical field of preparation neodymium iron boron slurry, disclose a kind of atmosphere protection device of preparation neodymium iron boron slurry, including processing component, processing component is handled to material, processing component includes main box, transition chamber, vacuum pump module, nitrogen injection module and water oxygen detection module, transition chamber is fixedly connected with the bottom of main box, the bottom of main box is respectively arranged vacuum pump module and nitrogen injection module, through the multistage sealing partition design of "transition chamber-main box", in combination with water oxygen content real-time monitoring, ensure the extreme stability of main processing area environment in material transmission process (such as maintaining 50ppm low water oxygen environment), effectively prevent fluctuation caused by external gas invasion;More important is, its intelligent control system can be automatically accurately regulated nitrogen injection amount by PID algorithm according to monitoring data, while maintaining ultralow water oxygen environment, greatly reduce the consumption of inert gas, realizes the unity of precision control and resource conservation.

Description

Technical Field

[0001] This utility model belongs to the technical field of neodymium iron boron slurry preparation, specifically, it relates to an atmosphere protection device for preparing neodymium iron boron slurry. Background Technology

[0002] Rare earth hydrogenation powder is highly reactive and easily ignites when exposed to air, causing it to heat up spontaneously. High-energy ball milling is a preparation method that can refine the powder particle size while passivating the powder activity. However, during the powder loading and unloading process, collisions can easily generate heat or sparks, causing the powder to react with oxygen in the air.

[0003] Currently, glove boxes do not consider industrial application scenarios, and the transition chamber lacks water and oxygen control. They rely solely on experience to determine whether materials can be transferred, resulting in large fluctuations in water and oxygen content when the internal and external environments are interconnected, posing an oxidation risk. If employees misoperate, the environment inside the chamber can deteriorate rapidly, leading to powder oxidation or even fire. Industrial production places high demands on the glove box's sealing performance, transition efficiency, ease of operation for personnel, and system stability.

[0004] During continuous operation, existing equipment is prone to internal water and oxygen concentration increases due to pressure imbalance or external leakage. This can cause rare earth hydride powder to react with oxygen, thus compromising operational safety. Furthermore, due to actual production needs, the entire box needs to maintain a low water and oxygen environment for extended periods. Existing glove boxes only achieve this requirement by switching the exhaust valve, resulting in a certain amount of nitrogen waste.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To solve the technical problem of water oxygen content, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] An atmosphere protection device for preparing NdFeB slurry includes a processing component for processing the material. The processing component includes a main housing, a transition chamber, a vacuum pump module, a nitrogen injection module, and a water and oxygen detection module. The transition chamber is fixedly connected to the bottom of the main housing. The vacuum pump module and the nitrogen injection module are respectively installed at the bottom of the main housing. The vacuum pump module and the nitrogen injection module are fixedly connected to the main housing and the transition chamber through pipelines. The water and oxygen detection modules are fixedly connected to both the main housing and the transition chamber.

[0008] In a preferred embodiment of this utility model, observation ports are arrayed on the main housing and are symmetrically arranged. Glove box modules are symmetrically arranged on the wall of the main housing, and multiple sets of glove box modules are provided. Each glove box module is fixedly connected to the main housing.

[0009] In a preferred embodiment of this utility model, a first sealing door is provided at the end of the main housing, and a second sealing door is provided at the end of the transition chamber. The first sealing door is connected to the main housing and the transition chamber is connected to the second sealing door by hinges and are sealed together.

[0010] In a preferred embodiment of this utility model, a hydraulic cylinder is provided on the top of the main housing, the hydraulic cylinder is fixedly connected to the main housing, and the output end of the hydraulic cylinder is connected to a lifting frame through a coupling.

[0011] In a preferred embodiment of this utility model, the ends and bottom of the lifting frame can be used to seal the connection between the main body and the transition chamber, and a placement rack is provided inside the hydraulic cylinder.

[0012] In a preferred embodiment of this utility model, mounting frames are symmetrically arranged on the placement rack, each mounting frame is rotatably connected to the placement rack, and the same storage tank is fixedly connected to each mounting frame.

[0013] In a preferred embodiment of this utility model, a swing rod is fixedly connected to one of the mounting brackets, and limiting blocks are arranged in an array and symmetrically inside the main housing.

[0014] In a preferred embodiment of this utility model, each limiting block is connected to the main housing via a damping pivot, and the limiting block is engaged with the bottom of the placement rack for restriction.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This atmosphere protection device for preparing NdFeB slurry, through a multi-stage sealed partition design of "transition chamber - main chamber" combined with real-time monitoring of water and oxygen content, ensures the extreme stability of the main processing area environment during material transfer (such as maintaining a low water and oxygen environment of 50ppm), effectively preventing fluctuations caused by the intrusion of external gases; more importantly, its intelligent control system can automatically and accurately adjust the nitrogen injection amount according to the monitoring data through a PID algorithm, which greatly reduces the consumption of inert gas while maintaining an ultra-low water and oxygen environment, achieving a balance between precise control and resource conservation.

[0017] 2. This atmosphere protection device for preparing NdFeB slurry integrates mechanized operation units such as automatic lifting and material turning. Workers can complete the entire process of material transfer, positioning, and turning (powder loading / unloading) through the glove box without directly contacting the material or entering the chamber. This "human-machine isolation" design minimizes the pollution and risks introduced by human operation, while transforming tedious physical labor into simple control operations, making the entire processing process safer, more efficient, and more ergonomic.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] In the attached diagram:

[0020] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 This is a bottom view of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the device of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure on the shelf of this utility model;

[0024] Figure 5 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0025] In the diagram: 1. Main housing; 11. First sealed door; 12. Observation port; 13. Glove box module; 2. Transition chamber; 21. Second sealed door; 3. Vacuum pump module; 31. Nitrogen injection module; 4. Water and oxygen detection module; 5. Hydraulic cylinder; 51. Lifting frame; 6. Placement frame; 61. Storage tank; 62. Mounting frame; 63. Swing rod; 64. Limiting block. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0027] Please see Figure 1-5 An atmosphere protection device for preparing NdFeB slurry includes a processing component for processing the material. The processing component includes a main housing 1, a transition chamber 2, a vacuum pump module 3, a nitrogen injection module 31, and a water and oxygen detection module 4. The transition chamber 2 is fixedly connected to the bottom of the main housing 1. The vacuum pump module 3 and the nitrogen injection module 31 are respectively installed at the bottom of the main housing 1. The vacuum pump module 3 and the nitrogen injection module 31 are both fixedly connected to the main housing 1 and the transition chamber 2 through pipelines. The water and oxygen detection module 4 is fixedly connected to both the main housing 1 and the transition chamber 2.

[0028] During operation, the material is first placed in the transition chamber 2. Then, the water and oxygen content in the main chamber 1 and the transition chamber 2 is monitored by the water and oxygen detection module 4. Subsequently, the appropriate amount of nitrogen is injected into the main chamber 1 and the transition chamber 2 by the vacuum pump module 3 and the nitrogen injection module 31, thereby reducing the internal water and oxygen content. After the water and oxygen content in the transition chamber 2 is appropriate, the material in the transition chamber 2 is sent into the main chamber 1 for processing. Through multi-level partitioning, the internal water and oxygen content can be accurately controlled, and leakage can be avoided.

[0029] Through the intelligent control system, based on the feedback data from the water and oxygen detection module 4 inside the main tank 1, the opening of the nitrogen input valve in the nitrogen injection module 31 is adjusted by PID, and the nitrogen input is reduced by proportional integral automatic feedback control, while maintaining a stable low water and oxygen environment inside the main tank 1 for a long time, thus reducing nitrogen waste.

[0030] Ensure that the oxygen content of the material in the transition chamber 2 is maintained within the range of 100 PPM and water content of 50 ppm before and after material transfer, so as to avoid fluctuations when the environment of the main chamber 1 is connected.

[0031] The main housing 1 has observation ports 12 arranged symmetrically. Glove box modules 13 are symmetrically arranged on the wall of the main housing 1, and there are multiple sets of glove box modules 13. Each glove box module 13 is fixedly connected to the main housing 1. A first sealing door 11 is provided at the end of the main housing 1, and a second sealing door 21 is provided at the end of the transition chamber 2. The first sealing door 11 is connected to the main housing 1 and the transition chamber 2 is connected to the second sealing door 21 by hinges and is sealed.

[0032] During operation, the second sealing door 21 is opened first, and then the material is sent to the transition chamber 2. After the water and oxygen in the main body 1 and the transition chamber 2 are balanced, the material is sent from the transition chamber 2 into the main body 1. The material is observed through the observation port 12, and then the glove box module 13 is used to facilitate the processing of the material by the construction personnel. After the material is processed, it is collected, and the first sealing door 11 is opened. The processed material is then taken out.

[0033] The main housing 1 is equipped with a hydraulic cylinder 5 at its top, which is fixedly connected to the main housing 1. The output end of the hydraulic cylinder 5 is connected to a lifting frame 51 via a coupling. Both the end and bottom of the lifting frame 51 can seal the connection between the main housing 1 and the transition chamber 2. The hydraulic cylinder 5 is equipped with a placement frame 6, and mounting frames 62 are symmetrically arranged on the placement frame 6. Each mounting frame 62 is rotatably connected to the placement frame 6, and the same storage tank 61 is fixedly connected between each mounting frame 62. A swing rod 63 is fixedly connected to one of the mounting frames 62. Limiting blocks 64 are arranged in an array and symmetrically within the main housing 1. Each limiting block 64 is connected to the main housing 1 via a damping shaft, and the limiting block 64 is engaged with the bottom of the placement frame 6 for restriction.

[0034] Before operation, the material is placed in the storage tank 61, and then the placement rack 6 is placed in the transition chamber 2. After the water and oxygen content in the main body 1 and the transition chamber 2 are balanced and meet the standard, the hydraulic cylinder 5 drives the lifting rack 51 to rise and fall into the main body 1 through the output end and coupling. Then, the placement rack 6 is taken out from the lifting rack 51 through the glove box module 13 and moved to a suitable position in the main body 1. Then, the limiting block 64 is manually moved to restrict the bottom of the placement rack 6. Then, the swing rod 63 is manually moved, and the swing rod 63 drives the mounting frame 62 to rotate. The mounting frame 62 drives the storage tank 61 to flip, thereby performing the powder loading and unloading process. This makes it easy to deal with the rotation of the material and ensures the safety and efficiency of the operation.

[0035] Working Principle: During operation, materials are first placed in transition chamber 2. Then, the water and oxygen content in the main chamber 1 and transition chamber 2 is monitored by the water and oxygen detection module 4. Subsequently, the vacuum pump module 3 and nitrogen injection module 31 inject an appropriate amount of nitrogen into the main chamber 1 and transition chamber 2, thereby reducing the internal water and oxygen content. Once the water and oxygen content in transition chamber 2 is suitable, the materials in transition chamber 2 are sent to the main chamber 1 for processing. Through multi-level zoning, precise control of the internal water and oxygen content is achieved, preventing leakage. Intelligent... The control system, based on feedback data from the water and oxygen detection module 4 inside the main chamber 1, adjusts the opening of the nitrogen input valve in the nitrogen injection module 31 via PID control. Through proportional-integral automatic feedback control, it reduces nitrogen input while maintaining a stable low-water-oxygen environment inside the main chamber 1 for an extended period, minimizing nitrogen waste. It ensures that the transition chamber 2 maintains a water-oxygen content of 100 PPM and a water content of 50 ppm before and after material transfer, preventing fluctuations when communicating with the environment of the main chamber 1. During operation, the second sealing door 21 is opened first, and then the material is sent to… Inside the transition chamber 2, after the water and oxygen levels in the main body 1 and transition chamber 2 are balanced, the material is sent from transition chamber 2 into the main body 1. Observation is performed through the observation port 12, and then the material is processed by the glove box module 13. After processing, the material is collected, and the first sealing door 11 is opened. The processed material is then removed. Before work begins, the material is placed in the storage tank 61, and then the placement rack 6 is placed in the transition chamber 2. After the water and oxygen content in the main body 1 and transition chamber 2 is balanced and meets the standards, the hydraulic system... Cylinder 5 drives the lifting frame 51 to rise and fall into the main housing 1 through the output end and coupling. Then, the glove box module 13 takes the placement rack 6 out of the lifting frame 51 and moves the placement rack 6 to a suitable position in the main housing 1. Then, the limiting block 64 is manually moved to restrict the bottom of the placement rack 6. Then, the swing rod 63 is manually moved, which drives the mounting frame 62 to rotate. The mounting frame 62 drives the storage tank 61 to flip, thereby performing the powder loading and unloading process. This makes it easy to deal with the rotation of the material and ensures safe and efficient operation.

[0036] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An atmosphere protection device for preparing NdFeB slurry, characterized in that, include: The processing component is used to process materials. The processing component includes a main box (1), a transition chamber (2), a vacuum pump module (3), a nitrogen injection module (31), and a water and oxygen detection module (4). The transition chamber (2) is fixedly connected to the bottom of the main box (1). The vacuum pump module (3) and the nitrogen injection module (31) are respectively installed at the bottom of the main box (1). The vacuum pump module (3) and the nitrogen injection module (31) are fixedly connected to the main box (1) and the transition chamber (2) through pipelines. The water and oxygen detection module (4) is fixedly connected to both the main box (1) and the transition chamber (2).

2. The atmosphere protection device for preparing NdFeB slurry according to claim 1, characterized in that, The main housing (1) has an array of observation ports (12) arranged symmetrically. Glove box modules (13) are symmetrically arranged on the wall of the main housing (1), and there are multiple sets of glove box modules (13). Each glove box module (13) is fixedly connected to the main housing (1).

3. The atmosphere protection device for preparing NdFeB slurry according to claim 1, characterized in that, The main housing (1) is provided with a first sealing door (11) at one end, and the transition chamber (2) is provided with a second sealing door (21) at one end. The first sealing door (11) is connected to the main housing (1) and the transition chamber (2) is connected to the second sealing door (21) by hinges and is sealed.

4. The atmosphere protection device for preparing NdFeB slurry according to claim 1, characterized in that, A hydraulic cylinder (5) is provided on the top of the main housing (1). The hydraulic cylinder (5) is fixedly connected to the main housing (1). The output end of the hydraulic cylinder (5) is connected to a lifting frame (51) through a coupling.

5. The atmosphere protection device for preparing NdFeB slurry according to claim 4, characterized in that, The lifting frame (51) can seal the connection between the main box (1) and the transition chamber (2) at both the end and the bottom. A placement rack (6) is provided inside the hydraulic cylinder (5).

6. The atmosphere protection device for preparing NdFeB slurry according to claim 5, characterized in that, The placement rack (6) is symmetrically provided with mounting racks (62), each mounting rack (62) is rotatably connected to the placement rack (6), and each mounting rack (62) is fixedly connected to the same storage tank (61).

7. The atmosphere protection device for preparing NdFeB slurry according to claim 6, characterized in that, One of the mounting brackets (62) is fixedly connected to a swing rod (63), and the main housing (1) is arranged in an array and symmetrically with limiting blocks (64).

8. The atmosphere protection device for preparing NdFeB slurry according to claim 7, characterized in that, Each of the aforementioned limiting blocks (64) is connected to the main housing (1) via a damping pivot, and the limiting blocks (64) are engaged with the bottom of the placement rack (6).

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