Preparation device of nitrided rare earth metal powder

Abstract

According to the technical scheme, the preparation device comprises a preparation device body, the preparation device body comprises a machining box and a mounting cover mounted at the top of the machining box, and a grinding structure and a cleaning structure are arranged on the mounting cover; through the arrangement of the grinding structure, when an isolation plate drives a second mounting shaft and a first driven gear to move, under the cooperation of a gear ring, the second mounting shaft drives a second grinding roller with the fixed surface to rotate, that is, the second grinding roller rotates synchronously while the first grinding roller drives the second grinding roller to rotate, and the grinding effect is improved. The first grinding roller and all the second grinding rollers conduct first grinding treatment on the nitrided rare earth metal, the grinding base can conduct grinding treatment on the nitrided rare earth metal again, the number of grinding procedures is large, the material grinding effect is guaranteed, multiple times of rework grinding are not needed, and therefore the production efficiency is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of preparation of rare earth metal nitride powders, and in particular to a device for preparing rare earth metal nitride powders. Background Art

[0002] Rare earth metal nitride powders are powder materials composed of rare earth metals and nitrogen elements, including lanthanum nitride, neodymium nitride, praseodymium nitride, gadolinium nitride, etc. Most of these materials have excellent thermal stability, corrosion resistance and mechanical properties, and are commonly used in the preparation of high-performance magnetic materials, catalysts and other alloy materials for special purposes.

[0003] During the production process of rare earth metal nitride powders, it is necessary to first prepare rare earth metal nitrides. After cooling the prepared rare earth metal nitrides, the products are then pulverized, screened, etc. by mechanical or chemical methods to obtain the required rare earth metal nitride powders. At this time, rare earth grinding equipment can be selected to grind the rare earth metals. The quality of the grinding effect is directly related to the subsequent product quality. However, in the actual working process of existing grinding devices, there are few grinding processes, the grinding effect on materials is poor, a single grinding is not sufficient to grind the materials to the qualified fineness, and even multiple rework grindings are required to meet the standards. The grinding efficiency is low, which greatly slows down the grinding production efficiency. In view of the above problems, the present invention document proposes a device for preparing rare earth metal nitride powders. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose a device for preparing rare earth metal nitride powders with more grinding processes, which can ensure the grinding effect on materials and does not require multiple rework grindings, thus ensuring the production efficiency.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme: A device for preparing rare earth metal nitride powders, including a preparation device body. The preparation device body includes a processing box and a mounting cover installed on the top of the processing box. The mounting cover is provided with a grinding structure, a cleaning structure, and a driving structure for adjusting the grinding structure and the cleaning structure. The processing box is provided with a collecting structure and a discharging structure that cooperate with the cleaning structure. The grinding structure is provided with an auxiliary structure; The grinding structure includes a first mounting shaft, the first mounting shaft is rotatably connected to the mounting cover, a toothed ring is sleeved outside the first mounting shaft, the toothed ring is fixedly connected to the processing box, the outer wall of the first mounting shaft is fixedly connected with a first grinding roller and a partition plate, and the bottom end of the first mounting shaft is fixedly connected with a grinding base. A plurality of second mounting shafts are rotatably connected inside the partition plate, and the outer walls of the second mounting shafts are fixedly connected with first driven gears and second grinding rollers. All the first driven gears are meshed with the toothed ring.

[0006] Preferably, the auxiliary structure includes a rotating shaft, several of the rotating shafts are fixedly connected to the outer wall of the first grinding roller, a grinding roller is rotatably connected to the rotating shaft, and a sieve plate is fixedly connected to the bottom inside the processing box.

[0007] Preferably, the rotating shaft and the grinding roller are located at one end of the surface of the first grinding roller close to the sieve plate, the first mounting shaft is rotatably connected to the sieve plate, the isolation plate is rotatably connected to the processing box, the top shapes of the first grinding roller and the second grinding roller are both set to be frustum-shaped, a feed hopper is installed at the top of the preparation device body, and a discharge hopper is installed at one side of the bottom of the preparation device body away from the feed hopper.

[0008] Preferably, the driving structure includes a mounting frame, the mounting frame is fixedly connected to the top surface of the mounting cover, a driving motor is installed on the mounting frame, and the output end of the driving motor is fixedly connected to the first mounting shaft.

[0009] Preferably, the cleaning structure includes two mounting shells and a driving gear, both of the mounting shells are fixedly connected to the top surface of the mounting cover, and a rotating shaft is rotatably connected inside the mounting shell.

[0010] Preferably, a fan blade is fixedly connected to the outer wall of the rotating shaft, the fan blade is located inside the mounting shell, and a second driven gear is fixedly connected to the bottom end of the rotating shaft.

[0011] Preferably, the driving gear is arranged inside the mounting cover, and the driving gear is fixedly connected to the outer wall of the first mounting shaft, and the driving gear meshes with the two second driven gears.

[0012] Preferably, the collecting structure includes two collecting covers, the two collecting covers are respectively fixedly connected to both sides of the processing box, a discharge port of the collecting cover is connected with a conveying conduit, and a discharge port of the conveying conduit is connected with a feed port of the mounting shell.

[0013] Preferably, a filter screen is fixedly connected inside the collecting cover, and the collecting cover is located at one end of the surface of the processing box close to the mounting cover.

[0014] Preferably, the discharging structure includes a three-way discharging cover, the three-way discharging cover is fixedly connected to the outer wall of the processing box, two feed ports at the top end of the three-way discharging cover are both connected with discharging pipes, and feed ports of the two discharging pipes are respectively connected with discharging ports of the two mounting shells.

[0015] Compared with the prior art, the present invention provides a preparation device for rare earth metal nitride powder, and has the following beneficial effects: 1. The preparation device for the rare earth nitride metal powder, by setting a grinding structure, the operator directly pours the rare earth nitride metal into the interior of the processing box through the feed hopper. Under the action of the driving structure, the first mounting shaft drives the first grinding roller and the grinding base to rotate. At the same time, the first mounting shaft drives the partition plate to rotate. Since the first driven gear meshes with the toothed ring, when the partition plate drives the second mounting shaft and the first driven gear to move, with the cooperation of the toothed ring, the second mounting shaft drives the second grinding roller fixed on its surface to rotate. That is, while the first grinding roller drives the second grinding roller to rotate, the second grinding roller rotates synchronously by itself. Thus, the first grinding roller and all the second grinding rollers perform the first grinding treatment on the rare earth nitride metal, and the grinding base can grind the rare earth nitride metal again. There are many grinding processes, ensuring the grinding effect on the material, and there is no need for multiple rework grindings, thereby ensuring the production efficiency.

[0016] 2. The preparation device for the rare earth nitride metal powder, by setting a cleaning structure, a collecting structure and a discharging structure. When the operator uses the device to prepare the rare earth nitride metal powder, the rare earth nitride metal with a larger volume enters the interior of the processing box. When the device performs crushing and grinding treatment on it, the first mounting shaft drives two second driven gears to rotate through the driving gear. The two second driven gears drive two fan blades to rotate through two rotating shafts, so that the air inside the installation housing can circulate. Since the weight of the dust is less than the weight of the rare earth nitride metal powder, under the action of the fan blades, the dust originally doped in the rare earth nitride metal and entering the interior of the processing box can enter the installation housing through the collecting cover and the conveying conduit, and then be discharged through the discharging pipe and the three-way discharging cover, ensuring the purity of the rare earth nitride metal powder processed by the device, and thus ensuring the quality of the rare earth nitride metal powder processed by the device.

[0017] 3. The preparation device for the rare earth nitride metal powder, by setting an auxiliary structure. When the rare earth nitride metal enters the interior of the processing box and is crushed by the first grinding roller and the second grinding roller, it is transferred downward to the surface of the sieve plate. At this time, the first grinding roller drives all the rotating shafts to rotate, so that the grinding roller can grind and crush the rare earth nitride metal with a larger volume on the surface of the sieve plate again, ensuring the grinding effect, and making full use of the effective space inside the processing box to achieve multiple grindings in a small space and ensuring the quality of the processed product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of a preparation device for a rare earth nitride metal powder proposed by the present invention; Figure 2 is a view of the connection structure of the preparation device body, the cleaning structure, the collecting structure and the discharging structure of the present invention; Figure 3Views of the preparation device body, grinding structure, auxiliary structure and sieve plate connection structure of the present invention; Figure 4 Views of the processing box, mounting cover, mounting rack, drive motor, first mounting shaft, toothed ring and first grinding roller connection structure of the present invention; Figure 5 Views of the connection structure of the first mounting shaft, first grinding roller, partition plate, second mounting shaft, first driven gear and second grinding roller of the present invention; Figure 6 Views of the connection structure of the mounting cover, mounting housing, rotating shaft, fan blade and second driven gear of the present invention; Figure 7 Views of the connection structure of the first mounting shaft, first grinding roller, grinding base and auxiliary structure of the present invention; Figure 8 Views of the connection structure of the second mounting shaft, first driven gear and second grinding roller of the present invention; Figure 9 In the present invention Figure 4 Enlarged view of part A.

[0019] In the figure: 1, preparation device body; 101, processing box; 102, feed hopper; 103, discharge hopper; 104, mounting cover; 2, grinding structure; 201, first mounting shaft; 202, toothed ring; 203, first grinding roller; 204, partition plate; 205, second mounting shaft; 206, first driven gear; 207, second grinding roller; 208, grinding base; 3, auxiliary structure; 301, rotating shaft; 302, grinding roller; 4, sieve plate; 5, drive structure; 501, mounting rack; 502, drive motor; 6, cleaning structure; 601, mounting housing; 602, rotating shaft; 603, fan blade; 604, second driven gear; 605, driving gear; 7, collecting structure; 701, collecting cover; 702, conveying conduit; 703, filter screen; 8, discharging structure; 801, discharging pipe; 802, three-way discharging cover. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. Embodiment 1

[0022] Referring to Figures 1-5 , a preparation device for rare earth metal nitride powder, comprising a preparation device body 1. The preparation device body 1 includes a processing box 101 and a mounting cover 104 installed on the top of the processing box 101. A grinding structure 2, a cleaning structure 6, and a driving structure 5 for adjusting the grinding structure 2 and the cleaning structure 6 are provided on the mounting cover 104. A collecting structure 7 and a discharging structure 8 that cooperate with the cleaning structure 6 are provided on the processing box 101. An auxiliary structure 3 is provided on the grinding structure 2; The grinding structure 2 includes a first mounting shaft 201. The first mounting shaft 201 is rotatably connected to the mounting cover 104. A toothed ring 202 is sleeved outside the first mounting shaft 201. The toothed ring 202 is fixedly connected to the processing box 101. The outer wall of the first mounting shaft 201 is fixedly connected with a first grinding roller 203 and a partition plate 204. And the bottom end of the first mounting shaft 201 is fixedly connected with a grinding base 208. A plurality of second mounting shafts 205 are rotatably connected inside the partition plate 204. The outer wall of the second mounting shaft 205 is fixedly connected with a first driven gear 206 and a second grinding roller 207. All the first driven gears 206 are meshed with the toothed ring 202.

[0023] In the present invention, the auxiliary structure 3 includes a rotating shaft 301. A plurality of rotating shafts 301 are fixedly connected to the outer wall of the first grinding roller 203. A grinding roller 302 is rotatably connected to the rotating shaft 301. A sieve plate 4 is fixedly connected to the inner bottom of the processing box 101. The rotating shaft 301 and the grinding roller 302 are located at one end of the surface of the first grinding roller 203 close to the sieve plate 4. The first mounting shaft 201 is rotatably connected to the sieve plate 4, and the partition plate 204 is rotatably connected to the processing box 101. The top shapes of the first grinding roller 203 and the second grinding roller 207 are both frustum-shaped. A feed hopper 102 is installed on the top of the preparation device body 1, and a discharge hopper 103 is installed on one side of the bottom of the preparation device body 1 away from the feed hopper 102. By providing the rotating shaft 301 and the grinding roller 302, when the rare earth nitride metal enters the inside of the processing box 101 and is subjected to crushing treatment by the first grinding roller 203 and the second grinding roller 207, it is transferred downward to the surface of the sieve plate 4. At this time, the first grinding roller 203 drives all the rotating shafts 301 to rotate, so that the grinding roller 302 can grind and crush the rare earth nitride metal with a larger volume on the surface of the sieve plate 4 again, ensuring the grinding effect, and making full use of the effective space inside the processing box 101 to realize multiple grindings in a small space and ensure the quality of the processed products.

[0024] In the present invention, the driving structure 5 includes a mounting frame 501. The mounting frame 501 is fixedly connected to the top surface of the mounting cover 104. A driving motor 502 is installed on the mounting frame 501. The output end of the driving motor 502 is fixedly connected to the first mounting shaft 201. By providing the mounting frame 501, under the action of the mounting frame 501, the height of the driving motor 502 is raised to prevent the two mounting shells 601 from obstructing the driving motor 502, thereby ensuring that the device can normally prepare rare earth nitride metal powder.

[0025] In the present invention, the cleaning structure 6 includes two mounting housings 601 and a driving gear 605. Both mounting housings 601 are fixedly connected to the top surface of the mounting cover 104. A rotating shaft 602 is rotatably connected inside the mounting housing 601. A fan blade 603 is fixedly connected to the outer wall of the rotating shaft 602. The fan blade 603 is located inside the mounting housing 601. A second driven gear 604 is fixedly connected to the bottom end of the rotating shaft 602. The driving gear 605 is arranged inside the mounting cover 104 and is fixedly connected to the outer wall of the first mounting shaft 201. The driving gear 605 meshes with the two second driven gears 604. The collecting structure 7 includes two collecting covers 701. The two collecting covers 701 are respectively fixedly connected to both sides of the processing box 101. The discharge port of the collecting cover 701 is connected to a conveying conduit 702. The discharge port of the conveying conduit 702 is connected to the feed port of the mounting housing 601. By providing the mounting housing 601, the rotating shaft 602, the fan blade 603, the second driven gear 604, the collecting cover 701 and the conveying conduit 702, when an operator uses the device to prepare rare earth nitride metal powder, rare earth nitride metal with a relatively large volume enters the inside of the processing box 101. When the device performs crushing and grinding treatment on it, the first mounting shaft 201 drives the two second driven gears 604 to rotate through the driving gear 605. The two second driven gears 604 drive the two fan blades 603 to rotate through the two rotating shafts 602, so that the air inside the mounting housing 601 can circulate. Since the weight of the dust is less than the weight of the rare earth nitride metal powder, under the action of the fan blade 603, the dust originally doped in the rare earth nitride metal and thus entering the inside of the processing box 101 can enter the inside of the mounting housing 601 through the collecting cover 701 and the conveying conduit 702 and then be discharged, ensuring the purity of the rare earth nitride metal powder processed by the device, and thus ensuring the quality of the rare earth nitride metal powder processed by the device. Example 2

[0026] Refer to Figures 1-9 A preparation device for rare earth nitride metal powder, comprising a preparation device body 1. The preparation device body 1 includes a processing box 101 and a mounting cover 104 installed on the top of the processing box 101. The mounting cover 104 is provided with a grinding structure 2 and a cleaning structure 6, and a driving structure 5 for adjusting the grinding structure 2 and the cleaning structure 6. The processing box 101 is provided with a collecting structure 7 and a discharging structure 8 that cooperate with the cleaning structure 6. The grinding structure 2 is provided with an auxiliary structure 3. The grinding structure 2 includes a first mounting shaft 201, the first mounting shaft 201 is rotatably connected to the mounting cover 104, a gear ring 202 is sleeved outside the first mounting shaft 201, the gear ring 202 is fixedly connected to the processing box 101, the outer wall of the first mounting shaft 201 is fixedly connected with a first grinding roller 203 and a partition plate 204, and the bottom end of the first mounting shaft 201 is fixedly connected with a grinding base 208. A plurality of second mounting shafts 205 are rotatably connected inside the partition plate 204, the outer wall of the second mounting shaft 205 is fixedly connected with a first driven gear 206 and a second grinding roller 207, and all the first driven gears 206 are meshed with the gear ring 202.

[0027] In the present invention, the auxiliary structure 3 includes a rotating shaft 301, a plurality of rotating shafts 301 are fixedly connected to the outer wall of the first grinding roller 203, a grinding roller 302 is rotatably connected to the rotating shaft 301, a sieve plate 4 is fixedly connected to the inner bottom of the processing box 101, the rotating shaft 301 and the grinding roller 302 are located at one end of the surface of the first grinding roller 203 close to the sieve plate 4, the first mounting shaft 201 is rotatably connected to the sieve plate 4, the partition plate 204 is rotatably connected to the processing box 101, the top shapes of the first grinding roller 203 and the second grinding roller 207 are both set as frustum shapes. A feed hopper 102 is installed on the top of the preparation device body 1, and a discharge hopper 103 is installed on one side of the bottom of the preparation device body 1 away from the feed hopper 102. By setting the rotating shaft 301 and the grinding roller 302, when the rare earth nitride metal enters the inside of the processing box 101 and is broken by the first grinding roller 203 and the second grinding roller 207, it is transported downward to the surface of the sieve plate 4. At this time, the first grinding roller 203 drives all the rotating shafts 301 to rotate, so that the grinding roller 302 can grind and break the rare earth nitride metal with a larger volume on the surface of the sieve plate 4 again, ensuring the grinding effect, and making full use of the effective space inside the processing box 101 to realize multiple grindings in a small space and ensure the quality of the processed products.

[0028] In the present invention, the driving structure 5 includes a mounting frame 501, the mounting frame 501 is fixedly connected to the top surface of the mounting cover 104, a driving motor 502 is installed on the mounting frame 501, and the output end of the driving motor 502 is fixedly connected to the first mounting shaft 201. By setting the mounting frame 501, under the action of the mounting frame 501, the height of the driving motor 502 is raised to avoid the two mounting shells 601 from obstructing the driving motor 502, so as to ensure that the device can normally prepare the rare earth nitride metal powder.

[0029] In the present invention, the cleaning structure 6 includes two mounting housings 601 and a driving gear 605. Both mounting housings 601 are fixedly connected to the top surface of the mounting cover 104. A rotating shaft 602 is rotatably connected inside the mounting housing 601. A fan blade 603 is fixedly connected to the outer wall of the rotating shaft 602. The fan blade 603 is located inside the mounting housing 601. A second driven gear 604 is fixedly connected to the bottom end of the rotating shaft 602. The driving gear 605 is arranged inside the mounting cover 104 and is fixedly connected to the outer wall of the first mounting shaft 201. The driving gear 605 meshes with the two second driven gears 604. The collecting structure 7 includes two collecting covers 701. The two collecting covers 701 are respectively fixedly connected to both sides of the processing box 101. The discharge port of the collecting cover 701 is connected to a conveying conduit 702. The discharge port of the conveying conduit 702 is connected to the feed port of the mounting housing 601. By providing the mounting housing 601, the rotating shaft 602, the fan blade 603, the second driven gear 604, the collecting cover 701 and the conveying conduit 702, when an operator uses the device to prepare rare earth nitride metal powder, larger-volume rare earth nitride metal enters the inside of the processing box 101. When the device performs crushing and grinding on it, the first mounting shaft 201 drives the two second driven gears 604 to rotate through the driving gear 605. The two second driven gears 604 drive the two fan blades 603 to rotate through the two rotating shafts 602, so that the air inside the mounting housing 601 can circulate. Since the weight of the dust is less than the weight of the rare earth nitride metal powder, under the action of the fan blade 603, the dust originally doped in the rare earth nitride metal and thus entering the inside of the processing box 101 can enter the mounting housing 601 through the collecting cover 701 and the conveying conduit 702 and then be discharged, ensuring the purity of the rare earth nitride metal powder processed by the device, and thus ensuring the quality of the rare earth nitride metal powder processed by the device.

[0030] In the present invention, a filter screen 703 is fixedly connected inside the collecting cover 701, and the collecting cover 701 is located at one end of the surface of the processing box 101 close to the mounting cover 104. By providing the filter screen 703, a certain intercepting and filtering effect can be achieved, thereby preventing larger-volume rare earth nitride metal from entering the inside of the collecting cover 701 and avoiding blockage, and thus ensuring the service life of the device.

[0031] In the present invention, the discharging structure 8 includes a three-way discharging cover 802. The three-way discharging cover 802 is fixedly connected to the outer wall of the processing box 101. Both feed ports at the top end of the three-way discharging cover 802 are connected to discharging pipes 801. The feed ports of the two discharging pipes 801 are respectively connected to the discharge ports of the two mounting housings 601. By providing the discharging pipes 801 and the three-way discharging cover 802, with the cooperation of the discharging pipes 801 and the three-way discharging cover 802, the dust adsorbed and transported by the two fan blades 603 can be discharged simultaneously, facilitating the operator to collect and process the dust.

[0032] Working principle: When an operator needs to prepare rare earth nitride metal powder, the rare earth nitride metal is directly poured into the interior of the processing box 101 through the feed hopper 102. Under the action of the driving motor 502, the first mounting shaft 201 drives the first grinding roller 203 and the grinding base 208 to rotate. At the same time, the first mounting shaft 201 drives the partition plate 204 to rotate. Since the first driven gear 206 meshes with the toothed ring 202, when the partition plate 204 drives the second mounting shaft 205 and the first driven gear 206 to move, with the cooperation of the toothed ring 202, the second mounting shaft 205 drives the second grinding roller 207 fixed on its surface to rotate, that is, while the first grinding roller 203 drives the second grinding roller 207 to rotate, the second grinding roller 207 rotates synchronously by itself, so that the first grinding roller 203 and all the second grinding rollers 207 perform the first grinding treatment on the rare earth nitride metal; When the smaller particles of rare earth nitride metal move downward to the surface of the sieve plate 4, since the first grinding roller 203 drives the rotating shaft 301 to rotate, the rolling roller 302 can perform the second grinding on it. When it passes through the sieve plate 4 and moves to the bottom end of the processing box 101, the grinding base 208 performs the third grinding treatment on it, thus completing the preparation of the rare earth nitride metal powder. Finally, the prepared rare earth nitride metal powder is discharged through the discharge hopper 103 at the bottom of the processing box 101, and the operator can collect it; When an operator uses this device to prepare rare earth nitride metal powder, the rare earth nitride metal with a larger volume enters the interior of the processing box 101. When the device performs crushing and grinding treatment on it, the first mounting shaft 201 drives two second driven gears 604 to rotate through the driving gear 605. The two second driven gears 604 drive two fan blades 603 to rotate through two rotating shafts 602, so that the air inside the installation housing 601 can circulate. Since the weight of the dust is less than the weight of the rare earth nitride metal powder, under the action of the fan blades 603, the dust originally doped in the rare earth nitride metal and thus entering the interior of the processing box 101 can enter the interior of the installation housing 601 through the collecting cover 701 and the conveying conduit 702, and then be discharged through the discharge pipe 801 and the three-way discharge cover 802.

[0033] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A device for preparing rare earth metal nitride powder, comprising a preparation device body (1), characterized in that: The preparation device body (1) comprises a processing box (101) and a mounting cover (104) mounted on the top of the processing box (101); the mounting cover (104) is provided with a grinding structure (2) and a cleaning structure (6), and a driving structure (5) for adjusting the grinding structure (2) and the cleaning structure (6); the processing box (101) is provided with a collecting structure (7) and a discharging structure (8) that cooperate with the cleaning structure (6); and the grinding structure (2) is provided with an auxiliary structure (3); The grinding structure (2) comprises a first mounting shaft (201), the first mounting shaft (201) being rotatably connected to the mounting cover (104), a gear ring (202) being sleeved on the outer side of the first mounting shaft (201), the gear ring (202) being fixedly connected to the processing box (101), a first grinding roller (203) and an isolation plate (204) being fixedly connected to the outer wall of the first mounting shaft (201), and a grinding base (208) being fixedly connected to the bottom end of the first mounting shaft (201), a plurality of second mounting shafts (205) being rotatably connected inside the isolation plate (204), a first driven gear (206) and a second grinding roller (207) being fixedly connected to the outer wall of the second mounting shaft (205), and all of the first driven gears (206) being meshed with the gear ring (202).

2. The device for preparing nitrided rare earth metal powder according to claim 1, characterized in that: The auxiliary structure (3) comprises a rotating shaft (301), a plurality of the rotating shafts (301) are fixedly connected to the outer wall of the first grinding roller (203), a grinding roller (302) is rotatably connected to the rotating shaft (301), and a sieve plate (4) is fixedly connected to the bottom of the processing box (101).

3. The preparation device of a nitride rare earth metal powder according to claim 2, characterized in that: The rotating shaft (301) and the grinding roller (302) are located at one end of the surface of the first grinding roller (203) close to the sieve plate (4), the first mounting shaft (201) is rotatably connected to the sieve plate (4), the isolation plate (204) is rotatably connected to the processing box (101), the top shapes of the first grinding roller (203) and the second grinding roller (207) are both set to be truncated cones, a feed hopper (102) is installed on the top of the preparation device body (1), and a discharge hopper (103) is installed on the side of the bottom of the preparation device body (1) away from the feed hopper (102).

4. The device for preparing nitrided rare earth metal powder according to claim 3, characterized in that: The driving structure (5) comprises a mounting frame (501), the mounting frame (501) being fixedly connected to the top surface of the mounting cover (104), a driving motor (502) being mounted on the mounting frame (501), and an output end of the driving motor (502) being fixedly connected to the first mounting shaft (201).

5. The device for preparing nitrided rare earth metal powder according to claim 1, characterized in that: The cleaning structure (6) comprises two mounting shells (601) and a driving gear (605); the two mounting shells (601) are fixedly connected to the top surface of the mounting cover (104); and a rotating shaft (602) is rotatably connected inside the mounting shells (601).

6. The device for preparing nitrided rare earth metal powder according to claim 5, characterized in that: The outer wall of the rotating shaft (602) is fixedly connected with a fan blade (603), the fan blade (603) is located inside the mounting shell (601), and the bottom end of the rotating shaft (602) is fixedly connected with a second driven gear (604).

7. The device for preparing nitrided rare earth metal powder according to claim 6, characterized in that: The driving gear (605) is arranged inside the installation cover (104), and the driving gear (605) is fixedly connected to the outer wall of the first installation shaft (201), and the driving gear (605) and the two second driven gears (604) are meshed with each other.

8. The device for preparing nitrided rare earth metal powder according to claim 7, characterized in that: The collecting structure (7) comprises two collecting covers (701), the two collecting covers (701) are respectively fixedly connected to two sides of the processing box (101), the discharge ports of the collecting covers (701) are connected to the conveying conduits (702), and the discharge ports of the conveying conduits (702) are interconnected with the feed ports of the mounting shell (601).

9. The device for preparing nitrided rare earth metal powder according to claim 8, characterized in that: A filter screen (703) is fixedly connected inside the collecting cover (701), and the collecting cover (701) is located at one end of the surface of the processing box (101) close to the installation cover (104).

10. The device for preparing nitrided rare earth metal powder according to claim 9, characterized in that: The discharge structure (8) comprises a three-way discharge cover (802), wherein the three-way discharge cover (802) is fixedly connected to the outer wall of the processing box (101), and two feed ports at the top of the three-way discharge cover (802) are connected to discharge pipes (801), and the feed ports of the two discharge pipes (801) are respectively connected to the discharge ports of the two mounting shells (601).

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