Neodymium-iron-boron rare earth alloy raw material processing device

Abstract

The application is suitable for the alloy raw material grinding technical field, and provides a neodymium-iron-boron rare earth alloy raw material processing device.The device comprises a sealed shell, a grinding mechanism installed in the sealed shell, a negative pressure connecting pipe one and a feeding pipe fixed at one end of the sealed shell, a feeding pipe end fixed with a feeding hopper, a sealing cover threadedly connected to the feeding hopper, a check valve one installed in the middle of the feeding pipe, a negative pressure connecting pipe two installed at the lower part of the feeding hopper, a discharging pipe fixed at the other end of the sealed shell, a filter screen fixed at the end of the discharging pipe extending into the sealed shell and located directly below the grinding mechanism, a collecting tank threadedly connected to the other end of the discharging pipe, a check valve three fixed at the upper part of the collecting tank, and a check valve two fixed at the middle of the discharging pipe.Through controlling the opening and closing of the check valve one, the check valve two and the check valve three, the feeding of the raw material for grinding and the discharging of the raw material after grinding can be realized without destroying the vacuum state in the sealed shell, so that the continuous grinding of the raw material can be realized.

Description

Technical Field

[0001] This invention belongs to the field of alloy raw material grinding technology, and particularly relates to a processing device for neodymium iron boron rare earth alloy raw materials. Background Technology

[0002] Neodymium iron boron (NdFeB) is an important type of rare earth permanent magnet. The production of NdFeB magnets relies on rare earth elements (such as neodymium and praseodymium). The mining and refining process can easily cause land damage, water pollution, and ecological damage. Recycling can significantly reduce the demand for primary ore mining. Furthermore, if discarded magnets are disposed of at will, their heavy metal components may seep into the soil and water sources, threatening the ecological environment.

[0003] The recycling of NdFeB magnets involves a grinding process, during which NdFeB rare earth alloy fragments are easily oxidized, leading to a decline in the quality of the finished product. Currently, the commonly used method for processing rare earth alloy powder is to use a vacuum ball mill for grinding in a vacuum environment.

[0004] During the grinding process, a vacuum environment needs to be maintained. After one grinding cycle, when grinding materials are added to the grinding device again, the vacuum usually needs to be broken to facilitate the addition of grinding materials. Then, a vacuum generator is used to evacuate the grinding device. This makes it impossible to continuously feed materials for grinding. Frequent evacuation of the grinding device takes a long time and affects grinding efficiency. In addition, the internal space of the grinding device is large, and frequent evacuation and breaking of the vacuum results in high grinding costs. Summary of the Invention

[0005] The purpose of this invention is to provide a neodymium iron boron rare earth alloy raw material processing device, which aims to solve the problem that existing neodymium iron boron rare earth alloy raw material processing devices cannot continuously grind the raw materials.

[0006] This invention is implemented as follows: a processing device for neodymium iron boron rare earth alloy raw materials includes a sealed housing and a grinding mechanism installed inside the sealed housing. It also includes: a negative pressure connecting pipe I and a feed pipe fixed to one end of the sealed housing; a feed hopper fixed to the end of the feed pipe; a sealing cap threadedly connected to the feed hopper; a check valve I installed in the middle of the feed pipe; and a negative pressure connecting pipe II installed at the lower part of the feed hopper. A discharge pipe is fixed to the other end of the sealed housing; a filter screen is fixed to one end of the discharge pipe extending into the sealed housing and located directly below the grinding mechanism; a collection tank threadedly connected to the other end of the discharge pipe; a check valve III fixed to the upper part of the collection tank; a check valve II fixed to the middle of the discharge pipe; and a negative pressure connecting pipe III fixed to the lower part of the check valve II. All three negative pressure connecting pipes are connected to a vacuum generator.

[0007] A further technical solution includes a fixed frame fixed inside a sealed housing, a movable grinding part rotatably connected to the middle of the fixed frame, a conical grinding cavity provided on the movable grinding part, a fixed grinding part provided inside the conical grinding cavity, the upper part of the fixed grinding part fixed on the fixed frame, a drive component for driving the movable grinding part to rotate provided on the fixed frame, and a circulating feeding mechanism for supplying neodymium iron boron rare earth alloy raw materials into the conical grinding cavity provided inside the sealed housing.

[0008] In a further technical solution, the drive assembly includes an annular mounting groove provided on the inner wall of the fixed frame. A bevel gear ring, a drive shaft, and a bevel gear are provided in the annular mounting groove. The bevel gear ring is fixed on the side wall of the movable grinding part. The drive shaft is rotatably connected in the fixed frame. The bevel gear is fixed to one end of the drive shaft, and the bevel gear ring meshes with the bevel gear. A motor is fixed on the side wall of the sealed housing, and the rotating end of the motor is connected to the drive shaft.

[0009] A further technical solution is that the circulating feeding mechanism includes a feeding rotating ring rotatably connected inside a sealed housing, a plurality of arc-shaped feeding plates are uniformly fixed on the inner wall of the feeding rotating ring, and a collecting hopper is fixed inside the sealed housing, the collecting hopper being located above the movable grinding part.

[0010] A further technical solution is provided, wherein an external gear ring is embedded and fixed on the side wall of the feeding rotating ring, a gear is rotatably connected to the inner wall of the sealing housing, a second motor is fixed on the sealing housing, the rotating end of the second motor is connected to the gear, and the gear meshes with the external gear ring.

[0011] In a further technical solution, the feeding rotating ring is composed of a rotating ring and a rotating frame. Both the rotating ring and the rotating frame are rotatably connected inside the sealed housing. The arc-shaped feeding plate is composed of multiple grinding sections one, an arc-shaped plate, and multiple crushing sections two. The multiple grinding sections one are fixed on the inner wall of the rotating ring, the arc-shaped plate is fixed on the rotating frame, and the multiple crushing sections two are fixed on the arc-shaped plate. The multiple crushing sections two and the multiple grinding sections one are arranged alternately. A switching component is provided on the rotating frame. The switching component is used to control the fixed or movable connection between the rotating ring and the rotating frame, and the switching component is used to control the fixed or movable connection between the rotating frame and the inner wall of the sealed housing.

[0012] A further technical solution includes an annular cavity located near one end of the discharge pipe within a sealed housing. The annular cavity is connected to the lower part of the discharge pipe via a pipeline. A stop groove is provided within the annular cavity. A horizontal guide groove is provided within the rotating frame. A guide block is slidably connected within the guide groove. One end of the guide block is connected to a piston and a compression spring. The piston extends into the annular cavity. The other end of the guide block is connected to a connecting block. A connecting groove that mates with the connecting block is provided on the side wall of the rotating ring.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. By controlling the opening and closing of check valve one, check valve two and check valve three, the feeding of grinding materials and the unloading of grinding materials can be realized without disrupting the vacuum state inside the sealed housing, thereby achieving continuous grinding of grinding materials;

[0015] 2. The revolving arc-shaped feeding plate drives the grinding material upward until the arc-shaped feeding plate moves above the collecting hopper, where the grinding material is put into the collecting hopper. The grinding material in the collecting hopper enters the conical grinding chamber, realizing the recycling and grinding of the material.

[0016] 3. The guide block drives the connecting block to disengage from the connecting groove, the rotating ring and the rotating frame are movably connected, the guide block drives the piston to insert into the stop groove, the rotating frame is fixedly connected to the sealing shell, the second motor drives the gear to rotate, the gear drives the outer gear ring to rotate, the outer gear ring drives the rotating ring to rotate, the rotating ring drives the first grinding section to revolve around the axis of the rotating ring, the first grinding section moves relative to the second crushing section, the first grinding section and the second crushing section crush the raw material. Attached Figure Description

[0017] Figure 1 A schematic diagram of a neodymium iron boron rare earth alloy raw material processing device provided by the present invention;

[0018] Figure 2 Provided by the present invention Figure 1 A structural diagram from another perspective;

[0019] Figure 3 Provided by the present invention Figure 2 Schematic diagram of the internal structure of the central sealing shell;

[0020] Figure 4 Provided by the present invention Figure 3 Schematic diagram of the internal structure of the rotating ring;

[0021] Figure 5 Provided by the present invention Figure 3 Schematic diagram of the internal structure of the grinding mechanism;

[0022] Figure 6 Provided by the present invention Figure 3 Schematic diagram of the structure of the feed rotator;

[0023] Figure 7 Provided by the present invention Figure 3 Schematic diagram of the rotating ring structure;

[0024] Figure 8 Provided by the present invention Figure 3 Schematic diagram of the rotating frame;

[0025] Figure 9 Provided by the present invention Figure 4 A magnified structural diagram of A in the middle.

[0026] In the attached diagram: 101, sealing shell; 102, negative pressure connecting pipe one; 103, feed pipe; 104, feed hopper; 105, sealing cover; 106, check valve one; 107, negative pressure connecting pipe two; 108, discharge pipe; 109, check valve two; 110, collection tank; 111, check valve three; 112, negative pressure connecting pipe three;

[0027] 2. Grinding mechanism; 201. Fixed frame; 202. Movable grinding part; 203. Fixed grinding part; 204. Conical grinding cavity; 205. Annular mounting groove; 206. Bevel gear ring; 207. Drive shaft; 208. Bevel gear; 209. Motor 1;

[0028] 3. Circulating feeding mechanism; 301. Feeding rotating ring; 302. External gear ring; 303. Gear; 304. Motor II; 305. Arc-shaped feeding plate; 306. Collection hopper; 401. Rotating ring; 402. Rotating frame; 403. Grinding section I; 404. Arc-shaped plate; 405. Crushing section II;

[0029] 5. Switching component; 501. Annular cavity; 502. Guide groove; 503. Guide block; 504. Compression spring; 505. Connecting groove; 506. Connecting block; 507. Stop groove; 508. Piston part. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0032] like Figures 1-4As shown, an embodiment of the present invention provides a neodymium iron boron rare earth alloy raw material processing device, including a sealed housing 101 and a grinding mechanism 2 installed inside the sealed housing 101. It also includes: a negative pressure connecting pipe 102 and a feed pipe 103 fixed to one end of the sealed housing 101; a feed hopper 104 fixed to the end of the feed pipe 103; a sealing cap 105 threaded onto the feed hopper 104; a check valve 106 installed in the middle of the feed pipe 103; and a negative pressure connecting pipe 107 installed at the lower part of the feed hopper 104. The sealed housing... The other end of 101 is fixed with a discharge pipe 108. One end of the discharge pipe 108, which extends into the sealing housing 101, is fixed with a filter screen and is located directly below the grinding mechanism 2. The other end of the discharge pipe 108 is threadedly connected to a collection tank 110. A check valve 111 is fixed on the upper part of the collection tank 110. A check valve 109 is fixed in the middle of the discharge pipe 108. A negative pressure connecting pipe 112 is fixed at the lower part of the check valve 109. A vacuum generator is connected to the negative pressure connecting pipe 102, the negative pressure connecting pipe 107, and the negative pressure connecting pipe 112.

[0033] In this embodiment of the invention, during use, the collection tank 110 is screwed onto the lower end of the check valve 109, the grinding material is fed into the feed hopper 104, the sealing cap 105 is screwed onto the feed hopper 104, the check valve 109 and the check valve 111 are opened, and the check valve 106 is closed. The vacuum generator evacuates the inside of the sealing housing 101 through the negative pressure connecting pipe 102, thereby putting the sealing housing 101, the discharge pipe 108, and the collection tank 110 into a vacuum state. The vacuum generator evacuates the inside of the feed hopper 104 through the negative pressure connecting pipe 107, putting the inside of the feed hopper 104 into a vacuum state. The check valve 106 is opened, and the feed material is fed into the feed hopper 104. The grinding material in the hopper 104 enters the sealed housing 101 through the feed pipe 103. The grinding mechanism 2 grinds the grinding material. In this embodiment, the end of the feed pipe 103 is located above the grinding mechanism 2. The ground material falls into the discharge pipe 108 and is collected in the collection tank 110 through the discharge pipe 108. When the collection tank 110 needs to be replaced, the check valve 2 109 and check valve 3 111 are closed, and the vacuum at the lower part of the discharge pipe 108 is broken through the negative pressure connection pipe 3 112. Then, the collection tank 110 is unscrewed, and the collection tank 110 is in a vacuum state, thereby vacuum storing the ground material. To prevent the ground raw materials from oxidizing upon contact with air, screw the new collection tank 110 onto the lower end of the discharge pipe 108. Then, open the check valve 111. The vacuum generator evacuates the lower part of the discharge pipe 108 and the collection tank 110 through the negative pressure connection pipe 112 until the lower part of the discharge pipe 108 and the collection tank 110 are in a vacuum state. Open the check valve 109 to connect the collection tank 110, the discharge pipe 108, and the sealing housing 101. Before the grinding of the raw materials in the grinding mechanism 2 is completed, close the check valve 106 and break the vacuum in the feed hopper 104 through the negative pressure connection pipe 107. Unscrew the sealing cover 105 and feed the material into the feed hopper 104. Grinding material is added to the feed hopper 104, and the sealing cap 105 is screwed onto the feed hopper 104. The vacuum generator evacuates the feed hopper 104 through the negative pressure connection pipe 107 until the feed hopper 104 is in a vacuum state. Then, the check valve 106 is opened, and the grinding material in the feed hopper 104 enters the sealing housing 101 through the feed pipe 103, thereby replenishing the sealing housing 101 with grinding material. By controlling the opening and closing of the check valve 106, check valve 109, and check valve 111, the feeding of grinding material and the unloading of grinding material can be realized without disrupting the vacuum state inside the sealing housing 101, thus achieving continuous grinding of the grinding material.

[0034] like Figures 1-6As shown, in a preferred embodiment of the present invention, the grinding mechanism 2 includes a fixed frame 201 fixed inside a sealed housing 101. A movable grinding part 202 is rotatably connected to the middle of the fixed frame 201. A conical grinding cavity 204 is provided on the movable grinding part 202. A fixed grinding part 203 is provided inside the conical grinding cavity 204. The upper part of the fixed grinding part 203 is fixed to the fixed frame 201. A drive assembly for driving the movable grinding part 202 to rotate is provided on the fixed frame 201. A mechanism for supplying neodymium iron boron rare earth alloy into the conical grinding cavity 204 is provided inside the sealed housing 101. The gold raw material circulation feeding mechanism 3; the driving component includes an annular mounting groove 205 provided on the inner wall of the fixed frame 201, a bevel ring 206, a drive shaft 207 and a bevel gear 208 provided in the annular mounting groove 205, the bevel ring 206 is fixed on the side wall of the movable grinding part 202, the drive shaft 207 is rotatably connected in the fixed frame 201, the bevel gear 208 is fixed at one end of the drive shaft 207 and the bevel ring 206 meshes with the bevel gear 208, and a motor 209 is fixed on the side wall of the sealed housing 101, the rotating end of the motor 209 is connected to the drive shaft 207.

[0035] In this embodiment of the invention, motor 209 extends into the rotating end of the sealing housing 101 and is sealed by end face sealing. Motor 209 drives drive shaft 207 to rotate, drive shaft 207 drives bevel gear 208 to rotate, bevel gear 208 drives bevel ring 206 to rotate, bevel ring 206 drives movable grinding part 202, movable grinding part 202 rotates relative to fixed grinding part 203, grinding material enters conical grinding cavity 204, movable grinding part 202 cooperates with fixed grinding part 203 to grind grinding material.

[0036] like Figures 1-6 As shown, in a preferred embodiment of the present invention, the circulating feeding mechanism 3 includes a feeding rotating ring 301 rotatably connected inside a sealed housing 101. A plurality of arc-shaped feeding plates 305 are uniformly fixed on the inner wall of the feeding rotating ring 301. A collecting hopper 306 is fixed inside the sealed housing 101. The collecting hopper 306 is located above the movable grinding part 202. An external toothed ring 302 is embedded and fixed on the side wall of the feeding rotating ring 301. A gear 303 is rotatably connected to the inner wall of the sealed housing 101. A second motor 304 is fixed on the sealed housing 101. The rotating end of the second motor 304 is connected to the gear 303, and the gear 303 meshes with the external toothed ring 302.

[0037] In this embodiment of the invention, motor 304 extends into the rotating end of the sealing housing 101 and is sealed by end face sealing. Motor 304 drives gear 303 to rotate, gear 303 drives external gear ring 302 to rotate, external gear ring 302 drives feeding ring 301 to rotate, feeding ring 301 drives arc-shaped feeding plate 305 to revolve around the center of feeding ring 301. Grinding material falls to the lower part of feeding ring 301, and the revolving arc-shaped feeding plate 305 drives the grinding material to move upward until the arc-shaped feeding plate 305 moves above the collecting hopper 306, and the grinding material is put into the collecting hopper 306. The grinding material in the collecting hopper 306 enters the conical grinding chamber 204.

[0038] like Figures 1-9 As shown, in a preferred embodiment of the present invention, the feeding rotating ring 301 is composed of a rotating ring 401 and a rotating frame 402. Both the rotating ring 401 and the rotating frame 402 are rotatably connected within the sealed housing 101. The arc-shaped feeding plate 305 is composed of multiple grinding sections 403, an arc-shaped plate 404, and multiple crushing sections 405. The multiple grinding sections 403 are fixed to the inner wall of the rotating ring 401, the arc-shaped plate 404 is fixed to the rotating frame 402, and the multiple crushing sections 405 are fixed to the arc-shaped plate 404. The multiple crushing sections 405 and the multiple grinding sections 403 are staggered. A switching assembly 5 is provided on the rotating frame 402. The switching assembly 5 is used to control the fixed or movable connection between the rotating ring 401 and the rotating frame 402. Component 5 is used to control the fixed or movable connection between the rotating frame 402 and the inner wall of the sealing housing 101; the switching component 5 includes an annular cavity 501 located near one end of the discharge pipe 108 inside the sealing housing 101. The annular cavity 501 is connected to the lower part of the discharge pipe 108 through a pipeline. A stop groove 507 is provided inside the annular cavity 501. A horizontal guide groove 502 is provided inside the rotating frame 402. A guide block 503 is slidably connected inside the guide groove 502. One end of the guide block 503 is connected to a piston part 508 and a compression spring 504. The piston part 508 extends into the annular cavity 501. The other end of the guide block 503 is connected to a connecting block 506. A connecting groove 505 that cooperates with the connecting block 506 is provided on the side wall of the rotating ring 401.

[0039] In this embodiment of the invention, in the initial state, the check valve 109 is closed, the lower part of the discharge pipe 108 breaks the vacuum through the negative pressure connecting pipe 112, the compression spring 504 is in a compressed state, the compression spring 504 pushes the guide block 503, the guide block 503 drives the connecting block 506 to be inserted into the connecting groove 505, the rotating ring 401 and the rotating frame 402 are fixedly connected, the guide block 503 drives the piston part 508 to disengage from the stop groove 507, the rotating frame 402 is movably set relative to the sealing shell 101, when the rotating ring 401 rotates, the rotating ring 401 drives the rotating frame 402 to rotate together, the rotating ring 401 and the rotating frame 402 drive the grinding part 403, the arc plate 404 and the crushing part 405 to revolve around the axis of the rotating ring 401, thereby making the grinding part 403, the arc plate 404 and the crushing part 405 form an arc-shaped feeding plate 305, and feeding the grinding material to realize the cyclic grinding of the grinding material;

[0040] When the grinding material is too large to enter the conical grinding chamber 204, the check valve 109 is closed. The vacuum generator evacuates the lower part of the discharge pipe 108 and the collection tank 110 through the negative pressure connecting pipe 112. The annular cavity 501 is connected to the lower part of the discharge pipe 108 through a pipeline, thereby evacuating the annular cavity 501. There is a pressure difference between the annular cavity 501 and the guide groove 502. The piston 508 is pulled by the pressure difference. The piston 508 overcomes the elastic force of the compression spring 504 and further compresses the compression spring 504, which drives the guide block 503 to move. The guide block 503 drives the connecting block 506 to disengage from the connecting groove 502. 05. The rotating ring 401 and the rotating frame 402 are movably connected. The guide block 503 drives the piston part 508 to insert into the stop groove 507. The rotating frame 402 is fixedly connected to the sealing housing 101. The second motor 304 drives the gear 303 to rotate. The gear 303 drives the outer gear ring 302 to rotate. The outer gear ring 302 drives the rotating ring 401 to rotate. The rotating ring 401 drives the first grinding part 403 to revolve around the axis of the rotating ring 401. The first grinding part 403 moves relative to the second crushing part 405. The first grinding part 403 and the second crushing part 405 cut the raw material, thereby crushing the raw material to a size that can be fed into the conical grinding chamber 204.

[0041] The above embodiments of the present invention provide a neodymium iron boron rare earth alloy raw material processing device. In use, the collection tank 110 is screwed onto the lower end of the check valve 109, the grinding raw material is put into the feed hopper 104, the sealing cover 105 is screwed onto the feed hopper 104, the check valve 111 is opened, and the check valve 106 and the check valve 109 are closed. The vacuum generator evacuates the inside of the sealing shell 101 through the negative pressure connecting pipe 102, thereby making the inside of the sealing shell 101 a vacuum state. The vacuum generator evacuates the inside of the feed hopper 104 through the negative pressure connecting pipe 107, making the inside of the feed hopper 104 a vacuum state. The check valve 106 is opened, and the grinding raw material in the feed hopper 104 enters the sealing shell 101 through the feed pipe 103.

[0042] When the compression spring 504 is in a compressed state, the compression spring 504 pushes the guide block 503, the guide block 503 drives the connecting block 506 to insert into the connecting groove 505, the rotating ring 401 and the rotating frame 402 are fixedly connected, the guide block 503 drives the piston part 508 to disengage from the stop groove 507, and the rotating frame 402 is movably set relative to the sealing housing 101.

[0043] Motor 2 304 drives gear 303 to rotate, gear 303 drives external gear ring 302 to rotate, external gear ring 302 drives rotating ring 401 to rotate, rotating ring 401 drives rotating frame 402 to rotate together, rotating ring 401 and rotating frame 402 drive grinding section 1 403, arc plate 404 and crushing section 2 405 to revolve around the axis of rotating ring 401, thereby making grinding section 1 403, arc plate 404 and crushing section 2 405 form arc-shaped feeding plate 305, and feeding the grinding material. The revolving arc-shaped feeding plate 305 drives the grinding material to move upward until the arc-shaped feeding plate 305 moves above the collecting hopper 306, and the grinding material is put into the collecting hopper 306. The grinding material in the collecting hopper 306 enters the conical grinding chamber 204 to realize the circulation grinding of the grinding material.

[0044] Motor 209 drives drive shaft 207 to rotate, drive shaft 207 drives bevel gear 208 to rotate, bevel gear 208 drives bevel ring 206 to rotate, bevel ring 206 drives movable grinding part 202, movable grinding part 202 rotates relative to fixed grinding part 203, grinding material enters conical grinding chamber 204, movable grinding part 202 cooperates with fixed grinding part 203 to grind grinding material, grinding material after being filtered by filter screen and falls into discharge pipe 108, unqualified grinding material falls into the lower part of feeding rotating ring 301;

[0045] When the grinding material is too large to enter the conical grinding chamber 204, the check valve 109 is closed. The vacuum generator evacuates the lower part of the discharge pipe 108 and the collection tank 110 through the negative pressure connecting pipe 112. The annular cavity 501 is connected to the lower part of the discharge pipe 108 through a pipeline, thereby evacuating the annular cavity 501. There is a pressure difference between the annular cavity 501 and the guide groove 502. The piston 508 is pulled by the pressure difference. The piston 508 overcomes the elastic force of the compression spring 504 and further compresses the compression spring 504, which drives the guide block 503 to move. The guide block 503 drives the connecting block 506 to disengage from the connecting groove 502. 05, the rotating ring 401 and the rotating frame 402 are movably connected. The guide block 503 drives the piston part 508 to insert into the stop groove 507. The rotating frame 402 is fixedly connected to the sealing housing 101. The motor 304 drives the gear 303 to rotate. The gear 303 drives the outer gear ring 302 to rotate. The outer gear ring 302 drives the rotating ring 401 to rotate. The rotating ring 401 drives the grinding part 403 to revolve around the axis of the rotating ring 401. The grinding part 403 moves relative to the crushing part 405. The grinding part 403 and the crushing part 405 crush the raw material, thereby crushing the raw material to a size that can be fed into the conical grinding chamber 204.

[0046] At the same time, check valve 2 109 is opened, and the ground raw material enters the collection tank 110 through discharge pipe 108 and is collected.

[0047] After the grinding section 1 (403) and crushing section 2 (405) have finished crushing the raw materials, or when it is necessary to replace the collection tank 110, close the check valve 2 (109) and check valve 3 (111). The vacuum at the lower part of the discharge pipe 108 is broken through the negative pressure connecting pipe 3 (112). The compression spring 504 pushes the guide block 503, which in turn drives the connecting block 506 to insert into the connecting groove 505. The rotating ring 401 and the rotating frame 402 are fixedly connected. The guide block 503 drives the piston part 508 to disengage from the stop groove 507. The rotating frame 402 is movably positioned relative to the sealing housing 101.

[0048] Then, unscrew the collection tank 110. The collection tank 110 is in a vacuum state, which allows for vacuum storage of the ground raw materials to prevent them from being oxidized by contact with air. Screw the new collection tank 110 onto the lower end of the discharge pipe 108, and then open the check valve 111. By controlling the opening and closing of the check valves 106, 109, and 111, the feeding of the grinding raw materials and the unloading of the ground raw materials can be achieved without breaking the vacuum state inside the sealed housing 101, thus enabling continuous grinding of the grinding raw materials.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A processing device for neodymium iron boron rare earth alloy raw materials, comprising a sealed housing and a grinding mechanism installed within the sealed housing, characterized in that, Also includes: A negative pressure connecting pipe 1 and a feed pipe are fixed at one end of the sealed housing. A feed hopper is fixed at the end of the feed pipe. A sealing cap is threaded onto the feed hopper. A check valve 1 is installed in the middle of the feed pipe. A negative pressure connecting pipe 2 is installed at the bottom of the feed hopper. A discharge pipe is fixed to the other end of the sealed housing. A filter screen is fixed to one end of the discharge pipe that extends into the sealed housing and is located directly below the grinding mechanism. A collection tank is threaded to the other end of the discharge pipe. A check valve three is fixed to the upper part of the collection tank. A check valve two is fixed to the middle part of the discharge pipe. A negative pressure connecting pipe three is fixed to the lower part of the check valve two. A vacuum generator is connected to negative pressure connecting pipe one, negative pressure connecting pipe two and negative pressure connecting pipe three. The grinding mechanism includes a fixed frame fixed inside a sealed housing, a movable grinding part rotatably connected to the middle of the fixed frame, a conical grinding cavity provided on the movable grinding part, a fixed grinding part provided inside the conical grinding cavity, the upper part of the fixed grinding part fixed on the fixed frame, a drive component for driving the movable grinding part to rotate provided on the fixed frame, and a circulating feeding mechanism for supplying neodymium iron boron rare earth alloy raw materials into the conical grinding cavity provided inside the sealed housing; The circulating feeding mechanism includes a feeding rotating ring rotatably connected inside a sealed housing. Multiple arc-shaped feeding plates are evenly fixed on the inner wall of the feeding rotating ring. A collection hopper is fixed inside the sealed housing and is located above the movable grinding part. The feeding rotating ring consists of a rotating ring and a rotating frame. Both the rotating ring and the rotating frame are rotatably connected inside the sealed housing. The arc-shaped feeding plate consists of multiple grinding sections one, an arc-shaped plate, and multiple crushing sections two. Multiple grinding sections one are fixed on the inner wall of the rotating ring, the arc-shaped plate is fixed on the rotating frame, and multiple crushing sections two are fixed on the arc-shaped plate. Multiple crushing sections two and multiple grinding sections one are arranged alternately. A switching component is provided on the rotating frame. The switching component is used to control the fixed or movable connection between the rotating ring and the rotating frame, and the switching component is used to control the fixed or movable connection between the rotating frame and the inner wall of the sealed housing. The switching assembly includes an annular cavity located near one end of the discharge pipe within a sealed housing. The annular cavity is connected to the lower part of the discharge pipe via a pipeline. A stop groove is provided inside the annular cavity, and a horizontal guide groove is provided inside the rotating frame. A guide block is slidably connected inside the guide groove. One end of the guide block is connected to a piston and a compression spring. The piston extends into the annular cavity, and the other end of the guide block is connected to a connecting block. A connecting groove that mates with the connecting block is provided on the side wall of the rotating ring.

2. The neodymium iron boron rare earth alloy raw material processing apparatus according to claim 1, characterized in that, The drive assembly includes an annular mounting groove on the inner wall of the fixed frame, a bevel gear ring, a drive shaft and a bevel gear are arranged in the annular mounting groove, the bevel gear ring is fixed on the side wall of the movable grinding part, the drive shaft is rotatably connected in the fixed frame, the bevel gear is fixed at one end of the drive shaft and the bevel gear ring meshes with the bevel gear, and a motor is fixed on the side wall of the sealed housing, the rotating end of the motor is connected to the drive shaft.

3. The neodymium iron boron rare earth alloy raw material processing apparatus according to claim 1, characterized in that, An external gear ring is embedded and fixed on the side wall of the feeding rotator, and a gear is rotatably connected to the inner wall of the sealing housing. A second motor is fixed on the sealing housing, and the rotating end of the second motor is connected to the gear, which meshes with the external gear ring.

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