NdFeB rare earth alloy raw material processing device

Abstract

The invention is suitable for the technical field of alloy raw material grinding, and provides a neodymium iron boron rare earth alloy raw material processing device which comprises a sealing shell and a grinding mechanism installed in the sealing shell, and further comprises a first negative pressure connecting pipe and a feeding pipe which are fixed to one end of the sealing shell, a feeding hopper is fixed to the tail end of the feeding pipe, and a sealing cover is in threaded connection with the feeding hopper; a first check valve is installed in the middle of the feeding pipe, and a second negative pressure connecting pipe is installed on the lower portion of the feeding hopper. A discharging pipe is fixed to the other end of the sealing shell, a filter screen is fixed to the end, extending into the sealing shell, of the discharging pipe and located under the grinding mechanism, the other end of the discharging pipe is in threaded connection with a collecting tank, a third check valve is fixed to the upper portion of the collecting tank, and a second check valve is fixed to the middle of the discharging pipe. By controlling opening and closing of the first check valve, the second check valve and the third check valve, feeding of grinding raw materials and returning of the ground raw materials can be achieved without damaging the vacuum state in the sealing shell, and therefore continuous grinding of the grinding raw materials is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of alloy raw material grinding, and in particular relates to a NdFeB rare earth alloy raw material processing device. Background Art

[0002] Rare earth permanent magnet material NdFeB is an important magnetic material. The production of NdFeB magnets depends on rare earth elements (such as neodymium, praseodymium, etc.). Its mining and refining process can easily cause land damage, water pollution and ecological damage. Recycling can significantly reduce the demand for primary ore mining. If the waste magnets are discarded at will, their heavy metal components may seep into the soil and water, threatening the ecological environment.

[0003] When recycling NdFeB magnets, it involves a grinding process. NdFeB rare earth alloy fragments are easily oxidized during the process of being processed into powder, which leads to a decrease in the quality of the finished product. At present, the commonly used rare earth alloy powder processing method is to use a vacuum ball mill to grind in a vacuum environment.

[0004] During the grinding process, a vacuum environment needs to be maintained. After one grinding is completed, when the grinding raw materials are put into the grinding device again, it is generally necessary to break the vacuum to facilitate the addition of the grinding raw materials into the grinding device, and then use the vacuum generating device to evacuate the grinding device. It is impossible to continuously feed and grind the materials, and frequently evacuate the grinding device, which takes a long time and affects the 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 the embodiment of the present invention is to provide a NdFeB rare earth alloy raw material processing device, aiming to solve the problem that the existing NdFeB rare earth alloy raw material processing device cannot continuously grind the raw material.

[0006] The present invention is implemented as follows: a NdFeB rare earth alloy raw material processing device includes a sealed shell and a grinding mechanism installed in the sealed shell, and also includes: a negative pressure connecting pipe 1 and a feed pipe fixed at one end of the sealed shell, a feed hopper is fixed at the end of the feed pipe, a sealing cover is threadedly connected to the feed hopper, a check valve 1 is installed in the middle of the feed pipe, and a negative pressure connecting pipe 2 is installed at the lower part of the feed hopper; a discharge pipe is fixed at the other end of the sealed shell, a filter screen is fixed at one end of the discharge pipe extending into the sealed shell and is located directly below the grinding mechanism, a collecting tank is threadedly connected to the other end of the discharge pipe, a check valve 3 is fixed to the upper part of the collecting tank, a check valve 2 is fixed to the middle of the discharge pipe, a negative pressure connecting pipe 3 is fixed to the lower part of the check valve 2, and the negative pressure connecting pipe 1, the negative pressure connecting pipe 2 and the negative pressure connecting pipe 3 are all connected to a vacuum generating device.

[0007] A further technical solution is that the grinding mechanism includes a fixed frame fixed in a sealed shell, a movable grinding part is rotatably connected to the middle part of the fixed frame, a conical grinding chamber is arranged on the movable grinding part, a fixed grinding part is arranged in the conical grinding chamber, the upper part of the fixed grinding part is fixed on the fixed frame, a driving assembly for driving the movable grinding part to rotate is arranged on the fixed frame, and a circulating feeding mechanism for supplying NdFeB rare earth alloy raw material into the conical grinding chamber is arranged in the sealed shell.

[0008] A further technical solution is that the driving assembly includes an annular mounting groove arranged on the inner wall of the fixed frame, a bevel gear ring, a driving 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 driving shaft is rotatably connected in the fixed frame, the bevel gear is fixed at one end of the driving shaft, and the bevel gear ring is meshed with the bevel gear, and a motor 1 is fixed on the side wall of the sealing housing, and the rotating end of the motor 1 is connected to the driving shaft.

[0009] According to a further technical solution, the circulating feeding mechanism comprises a feeding swivel rotatably connected in a sealed shell, a plurality of arc-shaped feeding plates are evenly fixed on the inner wall of the feeding swivel, a collecting bucket is fixed in the sealed shell, and the collecting bucket is located above the movable grinding part.

[0010] A further technical solution is that an outer 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 shell, a second motor is fixed on the sealing shell, the rotating end of the second motor is connected to the gear, and the gear is meshed with the outer gear ring.

[0011] A further technical solution is that the feeding rotating ring is composed of a rotating ring and a rotating frame, the rotating ring and the rotating frame are both rotatably connected in a sealed shell, the arc-shaped feeding plate is composed of a plurality of grinding parts one, an arc-shaped plate and a plurality of crushing parts two, the plurality of grinding parts one are fixed on the inner wall of the rotating ring, the arc-shaped plate is fixed on the rotating frame, the plurality of crushing parts two are fixed on the arc-shaped plate, the plurality of crushing parts two are alternately arranged with the plurality of grinding parts one, 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 shell.

[0012] A further technical solution is that the switching assembly includes an annular cavity arranged in a sealed shell near one end of the discharge pipe, the annular cavity is connected to the lower part of the discharge pipe through a pipeline, a stop groove is arranged in the annular cavity, a horizontal guide groove is arranged in the rotating frame, a guide block is slidably connected in the guide groove, one end of the guide block is connected to a piston part and a compression spring, the piston part extends into the annular cavity, the other end of the guide block is connected to a connecting block, and a connecting groove matching the connecting block is arranged on the side wall of the rotating ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By controlling the opening and closing of the check valve 1, the check valve 2 and the check valve 3, the feeding of the grinding raw material and the withdrawal of the grinding raw material can be realized without destroying the vacuum state in the sealed shell, thereby realizing the continuous grinding of the grinding raw material; 2. The revolving arc-shaped feeding plate drives the grinding raw materials to move upward until the arc-shaped feeding plate moves to the top of the collecting bucket, and the grinding raw materials are put into the collecting bucket. The grinding raw materials in the collecting bucket enter the conical grinding chamber to realize the circulation grinding of the raw materials; 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 part to insert into the stopping 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 grinding part 1 to revolve around the axis of the rotating ring, the grinding part 1 moves relative to the crushing part 2, and the grinding part 1 and the crushing part 2 cut the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a NdFeB rare earth alloy raw material processing device provided by the present invention; Figure 2 The present invention provides Figure 1 A schematic diagram of the structure from another side perspective; Figure 3 The present invention provides Figure 2 A schematic diagram of the internal structure of the sealed housing; Figure 4 The present invention provides Figure 3 Schematic diagram of the internal structure of the middle rotating ring; Figure 5 The present invention provides Figure 3 Schematic diagram of the internal structure of the grinding mechanism; Figure 6 The present invention provides Figure 3 Schematic diagram of the structure of the middle feeding swivel; Figure 7 The present invention provides Figure 3 Schematic diagram of the structure of the rotating ring; Figure 8 The present invention provides Figure 3 The structural diagram of the rotating frame; Fig. 9 The present invention provides Figure 4 Schematic diagram of the enlarged structure of A.

[0015] In the attached drawings: 101, sealed housing; 102, negative pressure connecting pipe 1; 103, feed pipe; 104, feed hopper; 105, sealing cover; 106, check valve 1; 107, negative pressure connecting pipe 2; 108, discharge pipe; 109, check valve 2; 110, collection tank; 111, check valve 3; 112, negative pressure connecting pipe 3; 2. Grinding mechanism; 201. Fixed frame; 202. Movable grinding part; 203. Fixed grinding part; 204. Conical grinding chamber; 205. Annular mounting groove; 206. Bevel gear ring; 207. Driving shaft; 208. Bevel gear; 209. Motor 1; 3. Circular feeding mechanism; 301. Feeding rotating ring; 302. External gear ring; 303. Gear; 304. Motor 2; 305. Arc-shaped feeding plate; 306. Collecting bucket; 401. Rotating ring; 402. Rotating frame; 403. Grinding part 1; 404. Arc-shaped plate; 405. Crushing part 2; 5. Switching assembly; 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 DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0018] like Figure 1-Figure 4 As shown, a NdFeB rare earth alloy raw material processing device provided by an embodiment of the present invention includes a sealed shell 101, and a grinding mechanism 2 installed in the sealed shell 101, and also includes: a negative pressure connecting pipe 102 and a feed pipe 103 fixed at one end of the sealed shell 101, a feed hopper 104 is fixed at the end of the feed pipe 103, a sealing cover 105 is threadedly connected to the feed hopper 104, a check valve 106 is installed in the middle of the feed pipe 103, and a negative pressure connecting pipe 2 107 is installed at the lower part of the feed hopper 104; the sealed shell A discharge pipe 108 is fixed to the other end of 101, and a filter screen is fixed to one end of the discharge pipe 108 extending into the sealed shell 101 and is located directly below the grinding mechanism 2, and a collection tank 110 is threadedly connected to the other end of the discharge pipe 108, a check valve three 111 is fixed to the upper part of the collection tank 110, a check valve two 109 is fixed to the middle part of the discharge pipe 108, a negative pressure connecting pipe three 112 is fixed to the lower part of the check valve two 109, and the negative pressure connecting pipe one 102, the negative pressure connecting pipe two 107 and the negative pressure connecting pipe three 112 are all connected to a vacuum generating device.

[0019] In the embodiment of the present invention, when in use, the collecting tank 110 is screwed on the lower end of the check valve 109, the ground raw material is put into the feed hopper 104, the sealing cover 105 is screwed on the feed hopper 104, the check valve 109 and the check valve 111 are opened, the check valve 106 is closed, and the vacuum generating device evacuates the inside of the sealed shell 101 through the negative pressure connecting pipe 102, so that the sealed shell 101, the discharge pipe 108 and the collecting tank 110 are in a vacuum state, the vacuum generating device evacuates the inside of the feed hopper 104 through the negative pressure connecting pipe 107, so that the inside of the feed hopper 104 is in a vacuum state, the check valve 106 is opened, and the feed hopper 104 is in a vacuum state. The ground raw materials in the hopper 104 enter the sealed housing 101 through the feed pipe 103, and the grinding mechanism 2 grinds the ground raw materials. In this embodiment, the end of the feed pipe 103 is located above the grinding mechanism 2, and the raw materials ground by the grinding mechanism 2 fall into the discharge pipe 108. The ground raw materials enter the collection tank 110 through the discharge pipe 108 and are collected. When the collection tank 110 needs to be replaced, the check valve 109 and the check valve 111 are closed, and the vacuum is broken at the lower part of the discharge pipe 108 through the negative pressure connecting pipe 112, and then the collection tank 110 is screwed off, and the collection tank 110 is in a vacuum state, so that the ground raw materials are vacuum stored. The material is stored in a vacuum state to prevent the ground raw materials from contacting the air and being oxidized. A new collecting tank 110 is screwed on the lower end of the discharge pipe 108, and then the check valve 3 111 is opened. The vacuum generating device evacuates the lower part of the discharge pipe 108 and the collecting tank 110 through the negative pressure connecting pipe 3 112 until the lower part of the discharge pipe 108 and the collecting tank 110 are in a vacuum state. The check valve 2 109 is opened to connect the collecting tank 110, the discharge pipe 108 and the sealing shell 101. Before the grinding of the raw materials in the grinding mechanism 2 is completed, the check valve 1 106 is closed, and the vacuum is broken on the feed hopper 104 through the negative pressure connecting pipe 2 107. The sealing cover 105 is screwed off and the feed hopper 104 is fed. Grinding raw materials are added into the hopper 104, and the sealing cover 105 is screwed onto the feed hopper 104. The vacuum generating device evacuates the feed hopper 104 through the negative pressure connecting pipe 107 until the feed hopper 104 is in a vacuum state, and then the check valve 106 is opened, and the grinding raw materials in the feed hopper 104 enter the sealed shell 101 through the feed pipe 103, and then the grinding raw materials are replenished into the sealed shell 101. By controlling the opening and closing of the check valve 106, the check valve 109 and the check valve 3 111, the feeding of the grinding raw materials and the withdrawal of the ground raw materials can be realized without destroying the vacuum state in the sealed shell 101, thereby realizing continuous grinding of the grinding raw materials.

[0020] like Figure 1-Figure 6As shown, as a preferred embodiment of the present invention, the grinding mechanism 2 includes a fixed frame 201 fixed in a sealed housing 101, a movable grinding part 202 is rotatably connected to the middle of the fixed frame 201, a conical grinding chamber 204 is provided on the movable grinding part 202, a fixed grinding part 203 is provided in the conical grinding chamber 204, the upper part of the fixed grinding part 203 is fixed on the fixed frame 201, a driving component for driving the movable grinding part 202 to rotate is provided on the fixed frame 201, and a driving component for supplying NdFeB rare earth alloy in the conical grinding chamber 204 is provided in the sealed housing 101. A circulating feeding mechanism 3 for gold raw materials; the driving component includes an annular mounting groove 205 arranged on the inner wall of a fixed frame 201, a bevel gear ring 206, a driving shaft 207 and a bevel gear 208 are arranged in the annular mounting groove 205, the bevel gear ring 206 is fixed on the side wall of the movable grinding part 202, the driving shaft 207 is rotatably connected in the fixed frame 201, the bevel gear 208 is fixed on one end of the driving shaft 207, and the bevel gear ring 206 is meshed with the bevel gear 208, a motor 209 is fixed on the side wall of the sealed housing 101, and the rotating end of the motor 209 is connected to the driving shaft 207.

[0021] In the embodiment of the present invention, the motor 209 extends into the rotating end of the sealed housing 101 and is sealed by end face sealing; the motor 209 drives the drive shaft 207 to rotate, the drive shaft 207 drives the bevel gear 208 to rotate, the bevel gear 208 drives the bevel gear ring 206 to rotate, the bevel gear ring 206 drives the movable grinding part 202, the movable grinding part 202 rotates relative to the fixed grinding part 203, the grinding material enters the conical grinding chamber 204, and the movable grinding part 202 cooperates with the fixed grinding part 203 to grind the grinding material.

[0022] like Figure 1-Figure 6 As shown, as a preferred embodiment of the present invention, the circulating feeding mechanism 3 includes a feeding swivel 301 rotatably connected in the sealing shell 101, a plurality of arc-shaped feeding plates 305 are evenly fixed on the inner wall of the feeding swivel 301, a collecting bucket 306 is fixed in the sealing shell 101, and the collecting bucket 306 is located above the movable grinding part 202, an outer gear ring 302 is embedded and fixed on the side wall of the feeding swivel 301, a gear 303 is rotatably connected on the inner wall of the sealing shell 101, a motor 2 304 is fixed on the sealing shell 101, the rotating end of the motor 2 304 is connected to the gear 303, and the gear 303 is meshed with the outer gear ring 302.

[0023] In an embodiment of the present invention, motor 2 304 extends into the rotating end of the sealed housing 101 and is sealed by end face sealing; motor 2 304 drives gear 303 to rotate, gear 303 drives the outer gear ring 302 to rotate, the outer gear ring 302 drives the loading ring 301 to rotate, the loading ring 301 drives the arc-shaped loading plate 305 to revolve around the center of the loading ring 301, and the grinding raw materials fall on the lower part of the loading ring 301, and the revolving arc-shaped loading plate 305 drives the grinding raw materials to move upward until the arc-shaped loading plate 305 moves to above the collecting bucket 306, and the grinding raw materials are put into the collecting bucket 306, and the grinding raw materials in the collecting bucket 306 enter the conical grinding chamber 204.

[0024] like Figure 1-Figure 9 As shown, as a preferred embodiment of the present invention, the feeding rotating ring 301 is composed of a rotating ring 401 and a rotating frame 402, and the rotating ring 401 and the rotating frame 402 are both rotatably connected in the sealed shell 101, and the arc-shaped feeding plate 305 is composed of a plurality of grinding parts 1 403, an arc plate 404 and a plurality of crushing parts 2 405, the plurality of grinding parts 1 403 are fixed on the inner wall of the rotating ring 401, the arc plate 404 is fixed on the rotating frame 402, and the plurality of crushing parts 2 405 are fixed on the arc plate 404, and the plurality of crushing parts 2 405 and the plurality of grinding parts 1 403 are staggered, and a switching component 5 is provided on the rotating frame 402, and the switching component 5 is used to control the fixed or movable connection between the rotating ring 401 and the rotating frame 402, and the switching component Component 5 is used to control the fixed or movably connection between the rotating frame 402 and the inner wall of the sealed shell 101; the switching component 5 includes an annular cavity 501 arranged in the sealed shell 101 near one end of the discharge pipe 108, the annular cavity 501 is connected with the lower part of the discharge pipe 108 through a pipeline, a retaining groove 507 is arranged in the annular cavity 501, a horizontal guide groove 502 is arranged in the rotating frame 402, a guide block 503 is slidably connected in 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, and a connecting groove 505 cooperating with the connecting block 506 is arranged on the side wall of the rotating ring 401.

[0025] In the embodiment of the present invention, in the initial state, the check valve 109 is closed, the lower part of the discharge pipe 108 is vacuumed 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 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 retaining groove 507, the rotating frame 402 is movably arranged 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 1 403, the arc plate 404 and the crushing part 2 405 to revolve around the axis of the rotating ring 401, so that the grinding part 1 403, the arc plate 404 and the crushing part 2 405 form an arc feeding plate 305, and the grinding raw material is fed, so as to realize the cyclic grinding of the grinding raw material; When the grinding material is too large to enter the conical grinding chamber 204, the check valve 109 is in a closed state, and the vacuum generating device evacuates the lower part of the discharge pipe 108 and the collecting tank 110 through the negative pressure connecting pipe 112. The annular cavity 501 is connected with the lower part of the discharge pipe 108 through the pipeline, so that the annular cavity 501 is evacuated. There is a pressure difference between the annular cavity 501 and the guide groove 502. The piston part 508 is pulled by the pressure difference. The piston part 508 overcomes the elastic force of the compression spring 504, further compresses the compression spring 504, and 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 shell 101, the motor 2 304 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 1 403 to revolve around the axis of the rotating ring 401, the grinding part 1 403 moves relative to the crushing part 2 405, the grinding part 1 403 and the crushing part 2 405 cut the raw material, so that the raw material is crushed to a size that can be put into the conical grinding chamber 204.

[0026] The above embodiment of the present invention provides a NdFeB rare earth alloy raw material processing device. When in use, the collecting tank 110 is screwed on the lower end of the check valve 109, the ground raw material is put into the feed hopper 104, the sealing cover 105 is screwed on the feed hopper 104, the check valve 111 is opened, the check valve 106 and the check valve 109 are closed, the vacuum generating device evacuates the inside of the sealed housing 101 through the negative pressure connecting pipe 102, and then the sealed housing 101 is in a vacuum state, the vacuum generating device evacuates the inside of the feed hopper 104 through the negative pressure connecting pipe 107, and the inside of the feed hopper 104 is in a vacuum state, the check valve 106 is opened, and the ground raw material in the feed hopper 104 enters the sealed housing 101 through the feed pipe 103; 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, and the rotating frame 402 is movably arranged relative 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 rotating frame 402 to rotate together, the rotating ring 401 and the rotating frame 402 drive the grinding part 1 403, the arc plate 404 and the crushing part 2 405 to revolve around the axis of the rotating ring 401, so that the grinding part 1 403, the arc plate 404 and the crushing part 2 405 form an arc loading plate 305, and the grinding raw materials are loaded, the revolving arc loading plate 305 drives the grinding raw materials to move upward, until the arc loading plate 305 moves to the top of the collecting bucket 306, the grinding raw materials are put into the collecting bucket 306, and the grinding raw materials in the collecting bucket 306 enter the conical grinding chamber 204, so as to realize the circulation grinding of the grinding raw materials; The motor 1 209 drives the driving shaft 207 to rotate, the driving shaft 207 drives the bevel gear 208 to rotate, the bevel gear 208 drives the bevel gear ring 206 to rotate, the bevel gear ring 206 drives the movable grinding part 202, the movable grinding part 202 rotates relative to the fixed grinding part 203, the grinding material enters the conical grinding chamber 204, the movable grinding part 202 cooperates with the fixed grinding part 203 to grind the grinding material, the ground material, after being filtered by the filter screen, falls into the discharge pipe 108, and the unqualified grinding material falls on the lower part of the feeding rotating ring 301; When the grinding material is too large to enter the conical grinding chamber 204, the check valve 109 is in a closed state, and the vacuum generating device evacuates the lower part of the discharge pipe 108 and the collecting tank 110 through the negative pressure connecting pipe 112. The annular cavity 501 is connected with the lower part of the discharge pipe 108 through the pipeline, so that the annular cavity 501 is evacuated. There is a pressure difference between the annular cavity 501 and the guide groove 502. The piston part 508 is pulled by the pressure difference. The piston part 508 overcomes the elastic force of the compression spring 504, further compresses the compression spring 504, and 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 shell 101, the motor 2 304 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 1 403 to revolve around the axis of the rotating ring 401, the grinding part 1 403 moves relative to the crushing part 2 405, the grinding part 1 403 and the crushing part 2 405 cut the raw material, so that the raw material is crushed and can be put into the conical grinding chamber 204; At the same time, the check valve 109 is opened, and the ground raw materials enter the collection tank 110 through the discharge pipe 108 to be collected; After the grinding part 1 403 and the crushing part 2 405 finish crushing the raw material, or when the collecting tank 110 needs to be replaced, the check valve 2 109 and the check valve 3 111 are closed, and the vacuum at the lower part of the discharge pipe 108 is broken through the negative pressure connecting pipe 3 112, and the compression spring 504 pushes the guide block 503, and 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, and the guide block 503 drives the piston part 508 to disengage from the retaining groove 507, and the rotating frame 402 is movably arranged relative to the sealing shell 101. Then unscrew the collecting tank 110, and the collecting tank 110 is in a vacuum state, and then the ground raw materials are vacuum stored to prevent the ground raw materials from contacting the air and being oxidized. Screw the new collecting tank 110 on the lower end of the discharge pipe 108, and then open the check valve three 111. By controlling the opening and closing of the check valve one 106, the check valve two 109 and the check valve three 111, the feeding of the ground raw materials and the withdrawal of the ground raw materials can be realized without destroying the vacuum state in the sealed shell 101, thereby realizing continuous grinding of the ground raw materials.

[0027] 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 in the protection scope of the present invention.

Claims

1. A NdFeB rare earth alloy raw material processing device, comprising a sealed housing and a grinding mechanism installed in 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 sealing shell, a feed hopper is fixed at the end of the feed pipe, a sealing cover is threadedly connected to the feed hopper, a check valve 1 is installed in the middle of the feed pipe, and a negative pressure connecting pipe 2 is installed at the lower part of the feed hopper; A discharge pipe is fixed to the other end of the sealed shell, and a filter is fixed to one end of the discharge pipe extending into the sealed shell and is located directly below the grinding mechanism. A collecting tank is threadedly connected to the other end of the discharge pipe, and a check valve three is fixed to the upper part of the collecting tank, a check valve two is fixed to the middle part of the discharge pipe, and a negative pressure connecting pipe three is fixed to the lower part of the check valve two. Negative pressure connecting pipe one, negative pressure connecting pipe two and negative pressure connecting pipe three are all connected to a vacuum generating device.

2. The NdFeB rare earth alloy raw material processing device according to claim 1, characterized in that: The grinding mechanism includes a fixed frame fixed in a sealed shell, a movable grinding part is rotatably connected to the middle of the fixed frame, a conical grinding chamber is arranged on the movable grinding part, a fixed grinding part is arranged in the conical grinding chamber, the upper part of the fixed grinding part is fixed on the fixed frame, a driving component for driving the movable grinding part to rotate is arranged on the fixed frame, and a circulating feeding mechanism for supplying NdFeB rare earth alloy raw material into the conical grinding chamber is arranged in the sealed shell.

3. The NdFeB rare earth alloy raw material processing device according to claim 2, characterized in that: The driving assembly includes an annular mounting groove arranged on the inner wall of the fixed frame, and a bevel gear ring, a driving 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, and the driving shaft is rotatably connected in the fixed frame. The bevel gear is fixed on one end of the driving shaft, and the bevel gear ring is meshed with the bevel gear. A motor 1 is fixed on the side wall of the sealing shell, and the rotating end of the motor 1 is connected to the driving shaft.

4. The NdFeB rare earth alloy raw material processing device according to claim 2, characterized in that: The circulating feeding mechanism comprises a feeding swivel rotatably connected in a sealed shell, a plurality of arc-shaped feeding plates are evenly fixed on the inner wall of the feeding swivel, and a collecting bucket is fixed in the sealed shell, and the collecting bucket is located above the movable grinding part.

5. The NdFeB rare earth alloy raw material processing device according to claim 4, characterized in that: An outer gear ring is embedded and fixed on the side wall of the feeding rotating ring, a gear is rotatably connected on the inner wall of the sealing shell, a second motor is fixed on the sealing shell, the rotating end of the second motor is connected to the gear, and the gear is meshed with the outer gear ring.

6. The NdFeB rare earth alloy raw material processing device according to claim 4, characterized in that: The feeding swivel is composed of a rotating ring and a rotating frame, and the rotating ring and the rotating frame are both rotatably connected in the sealed shell. The arc-shaped feeding plate is composed of multiple grinding parts one, an arc-shaped plate and multiple crushing parts two. The multiple grinding parts 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 parts two are fixed on the arc-shaped plate. The multiple crushing parts two and the multiple grinding parts one are arranged alternately. A switching component is arranged on the rotating frame. The switching component is used to control the fixed or movable connection between the rotating ring and the rotating frame. The switching component is used to control the fixed or movable connection between the rotating frame and the inner wall of the sealed shell.

7. The NdFeB rare earth alloy raw material processing device according to claim 6, characterized in that: The switching assembly includes an annular cavity arranged in a sealed shell near one end of the discharge pipe, the annular cavity is connected to the lower part of the discharge pipe through a pipeline, a stop groove is arranged in the annular cavity, a horizontal guide groove is arranged in the rotating frame, a guide block is slidably connected in the guide groove, one end of the guide block is connected to a piston part and a compression spring, the piston part extends into the annular cavity, the other end of the guide block is connected to a connecting block, and a connecting groove matching the connecting block is arranged on the side wall of the rotating ring.

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