Vacuum thermal reduction preparation device for rare earth metal

Abstract

The invention relates to the technical field of vacuum thermal reduction preparation devices, and discloses a rare earth metal vacuum thermal reduction preparation device which comprises a reduction device body and a limiting support, a control unit is arranged in the reduction device body, and an air pump is installed on the lower surface of the limiting support. When the control unit judges that the connection position of the flange and the external pipeline leaks, the air pump generates compressed air to drive the rubber ring to be in an expansion state and to be attached to the outer side face of the connection position of the flange and the external pipeline, and the effect of temporarily blocking the leakage position is achieved. When the control unit judges that the joint of the flange and the external pipeline is not limited thoroughly, the air pump generates compressed air to drive the rubber plate to be in an expansion state, and the rubber plate in the expansion state extrudes the surface of the external pipeline to drive the external pipeline to move towards the flange. The effect of temporarily limiting and fixing the joint of the flange and the external pipeline is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum thermal reduction preparation equipment, and more specifically to a vacuum thermal reduction preparation equipment for rare earth metals. Background Art

[0002] A rare earth metal vacuum thermal reduction preparation device is a device specially used for the preparation of rare earth metals. Among them, a common rare earth metal vacuum reduction preparation device is mainly composed of a reaction vessel, a heating layer, a cooling layer, a heat insulation layer, a vacuum pump, a feed and discharge pipe, a transmission shaft, a stirring blade and other mechanisms. The specific working process of the rare earth metal vacuum thermal reduction preparation device is as follows: the prepared rare earth metal raw materials and reducing agent are transported to the reaction vessel through the feed pipe, the heating layer is started, and the reaction chamber is heated to make the rare earth compound and the reducing agent reach the required reaction temperature; while heating, the vacuum pump is started to evacuate the reaction chamber to remove the air and moisture in the reaction chamber; under high temperature and vacuum conditions, the reducing agent and the rare earth compound undergo a thermal reduction reaction to generate rare earth metals and corresponding compounds; after the reaction is completed, the heating and vacuum treatment are stopped; and the reaction product is taken out of the reaction chamber through the discharge pipe;

[0003] During the actual operation, we found that it is very easy to have incomplete connection and non-sealed state when connecting the feed and discharge pipes with the external pipes. The main reasons for the above are: 1. Improper installation process: During the installation process, if the precise docking and tightening are not carried out in accordance with the specifications, gaps may occur at the connection; the fasteners used may not reach the specified torque, resulting in loose connections; 2. Failure of sealing materials: The sealing materials used may lose their sealing performance due to aging, corrosion or poor quality; 3. Loosening due to long service life of fasteners: Due to vibration, temperature changes or long-term operation, fasteners may gradually loosen, resulting in air leakage at the connection; The impacts caused by the above situation are: 1. Poor material flow: Incomplete connection may cause material accumulation or blockage at the pipe connection, affecting the normal flow of materials; 2. System pressure fluctuations: Incomplete connection may also cause pressure fluctuations inside the system, because the material may be obstructed during the flow process, resulting in additional pressure loss; 3. Decreased vacuum: Air leakage will increase the content of impurities such as oxygen and nitrogen in the reaction chamber, and these impurities may react with the reactants unnecessarily, thereby reducing the reaction efficiency;

[0004] The above situation can only be discovered through manual self-inspection, thus causing a certain waste of manpower. At the same time, if the above situation is not handled in time, it will also cause the above impact. Therefore, we are in urgent need of a rare earth metal vacuum thermal reduction preparation device to solve the above problems. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a rare earth metal vacuum thermal reduction preparation device to solve the problems existing in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a rare earth metal vacuum thermal reduction preparation device, comprising a reduction device body, an input pipeline is installed through the inner wall on the right side of the top of the reduction device body, an output pipeline is installed through the inner wall on the left side of the bottom of the reduction device body, and flanges are installed on the sides of the input pipeline and the output pipeline, a limit bracket is installed on the upper surface of the reduction device body, a vacuum pump is installed in the middle position of the upper surface of the limit bracket, and the output end of the vacuum pump is installed inside the reduction device body;

[0007] A control unit is arranged inside the main body of the reduction device, and an air pump is installed on the lower surface of the limiting bracket.

[0008] Furthermore, two groups of output Y-shaped tubes are installed at the output end of the air pump, and a first annular hollow column and a second annular hollow column are installed adjacent to each other on the outer sides of the middle positions of the input pipe and the output pipe. The positions where the first annular hollow column and the second annular hollow column are installed on the outer side of the output pipe are adjacent to each other, forming an adjacent layout.

[0009] Furthermore, the output Y-shaped tube is provided with two groups of air outlet holes at a position far away from the air pump, and the two groups of air outlet holes are installed in the first annular hollow column and the second annular hollow column respectively. Auxiliary delivery pipes are installed in the first annular hollow column and the second annular hollow column, and the number of the auxiliary delivery pipes is two groups.

[0010] Furthermore, a bracket plate is installed at equal distances in the circumferential direction on the side of the flange near the output pipe and the input pipe, a transmission rod is movably sleeved inside the bracket plate, a limited U-shaped bracket is installed at the end of the transmission rod away from the bracket plate, a hollow column is installed on the inner side of the limited U-shaped bracket near the transmission rod position, the inner wall of the hollow column is provided with a clamping column, the outer wall of the clamping column is matched with the inner wall of the hollow column so as to be parallel and coaxially sleeved on the inner wall of the clamping column, and one end of the clamping column extends to the outside of the opening of the hollow column, a first spring is installed on the side of the clamping column near the hollow column, the end of the first spring away from the clamping column position is installed at the bottom of the hollow column, the geometric center point of the first spring is on a straight line with the geometric center point of the hollow column, and a slot column is installed on the flange near the clamping column, and a accommodating chamber matched with the outer wall of the clamping column is opened on the inner wall of the slot column so that the clamping column can be fixed in the accommodating chamber of the slot column.

[0011] Furthermore, a rubber ring is installed on the inner side of the middle position of the limiting U-shaped bracket, and an air pressure sensor is installed inside the rubber ring. The air pressure sensor collects air pressure data in the rubber ring and transmits it to the control unit for analysis. A friction layer is installed on the outer side of the limiting U-shaped bracket away from the hollow column position, and a card slot is opened on the inner side of the limiting U-shaped bracket away from the hollow column position. The rubber plate is movably sleeved in the card slot, and the inner wall of the card slot is adapted to the outer side of the rubber plate. Second springs are installed at both ends of the side of the rubber plate close to the card slot position, and the second spring is vertically installed in the card slot. A weight sensor is installed at the middle position of the side of the rubber plate close to the card slot position. The weight sensor collects pressure data generated when the rubber plate contacts the external pipeline and transmits it to the control unit. A rubber suction cup is installed on the side of the rubber plate away from the card slot position.

[0012] Furthermore, the control unit includes a threshold module and a reminder unit;

[0013] The threshold module simulates the simulated air pressure data generated by the air pressure sensor when the flange and the external pipeline are in a normal connection state, and integrates the simulated air pressure data to form a first threshold range. The control unit compares the real-time air pressure data with the first threshold range. When the real-time air pressure data is not within the first threshold range, it is determined that a leakage occurs at the connection between the flange and the external pipeline. The air pump generates compressed air and delivers it to the inside of the rubber ring, driving the rubber ring to be in an expanded state and attached to the leakage between the flange and the external pipeline. At the same time, the control unit drives the reminder unit to send an early warning message to the staff, reminding them to arrive at the site for inspection.

[0014] Furthermore, the threshold module simulates the simulated pressure data generated by the weight sensor when the flange and the external pipeline are in a normal connection state, and integrates the simulated pressure data to form a second threshold range. The control unit compares the real-time pressure data with the second threshold range. When the real-time pressure data is not within the second threshold range, it is determined that there is an incomplete connection between the flange and the external pipeline. The air pump generates compressed air and delivers it to the inside of the rubber plate, driving the rubber plate to be in an expanded state, achieving a temporary limit to fix the flange and the external pipeline. At the same time, the control unit drives the reminder unit to send an early warning message to the staff, reminding them to arrive at the site for inspection.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention is provided with a control unit, which is conducive to the control unit to determine that when a leakage occurs at the connection between the flange and the external pipeline, the air pump generates compressed air, which is input into the interior of the rubber ring through a group of air outlet holes corresponding to the output Y-tube and a group of auxiliary delivery pipes, driving the rubber ring to be in an expanded state and attached to the outer side surface of the connection between the flange and the external pipeline, thereby achieving the effect of temporarily blocking the leakage, preventing external gas from entering the reaction chamber of the reduction device body, and causing a certain impact on the production efficiency.

[0017] 2. The present invention is provided with a control unit, which is conducive to the control unit to determine that the limit is not complete at the connection between the flange and the external pipeline. The air pump generates compressed air, which is input into the rubber plate through another group of air outlet holes corresponding to the output Y-tube and a corresponding group of auxiliary delivery pipes, driving the rubber plate to be in an expanded state. The rubber plate in the expanded state squeezes the surface of the external pipeline, driving the external pipeline to move toward the flange position, achieving the effect of temporarily limiting and fixing the connection between the flange and the external pipeline, avoiding the falling off phenomenon between the two, and ensuring the normal operation of the main body of the reduction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a partial structural schematic diagram of the present invention.

[0020] Figure 3 It is a schematic diagram of the overall structure of the limiting U-shaped bracket of the present invention.

[0021] Figure 4 It is a schematic diagram of the back structure of the limiting U-shaped bracket of the present invention.

[0022] Figure 5 It is a schematic cross-sectional view of the overall structure of the hollow column of the present invention.

[0023] Figure 6 It is a schematic cross-sectional view of a partial structure of a position-limiting U-shaped bracket of the present invention.

[0024] The accompanying drawings are marked as follows: 1. restoration device body; 101. window; 102. input pipe; 103. limit bracket; 104. vacuum pump; 105. output pipe; 106. flange; 2. air pump; 201. output Y-type tube; 202. first annular hollow column; 203. second annular hollow column; 204. auxiliary delivery pipe; 3. limit U-type bracket; 301. bracket plate; 302. hollow column; 303. slot column; 304. rubber ring; 305. transmission rod; 306. friction layer; 307. rubber plate; 308. clamping column; 309. first spring; 310. rubber suction cup; 311. second spring; 312. weight sensor. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The rare earth metal vacuum thermal reduction preparation device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0026] Reference Figure 1 to Figure 2 As shown, the present invention provides a rare earth metal vacuum thermal reduction preparation device, comprising a reduction device body 1, an input pipe 102 is installed through the inner wall of the top right side of the reduction device body 1, an output pipe 105 is installed through the inner wall of the bottom left side of the reduction device body 1, and flanges 106 are installed on the sides of the input pipe 102 and the output pipe 105, a limiting bracket 103 is installed on the upper surface of the reduction device body 1, a vacuum pump 104 is installed in the middle position of the upper surface of the limiting bracket 103, and the output end of the vacuum pump 104 is installed inside the reduction device body 1;

[0027] A control unit is disposed inside the restoration device body 1 , and an air pump 2 is installed on the lower surface of the limiting bracket 103 .

[0028] In the embodiment of the present application, the specific working process of this part of the application embodiment is: the prepared rare earth compound and the reducing agent are transported to the reaction chamber of the reduction device body 1 to carry out a reduction reaction. During the reaction, the vacuum pump 104 inputs current to carry out a vacuum reaction in the reaction chamber of the reduction device body 1 to remove air and moisture in the reaction chamber; under high temperature and vacuum conditions, the reducing agent and the rare earth compound undergo a thermal reduction reaction to generate rare earth metals and corresponding compounds, which are discharged from the reaction chamber through the output pipe 105.

[0029] Reference Figures 1 to 3 As shown, the present invention provides a rare earth metal vacuum thermal reduction preparation device, the output end of the air pump 2 is equipped with two groups of output Y-shaped tubes 201, and the first annular hollow column 202 and the second annular hollow column 203 are installed adjacently on the outer side of the middle position of the input pipeline 102 and the output pipeline 105, and the first annular hollow column 202 and the second annular hollow column 203 are installed adjacent to each other on the outer side of the output pipeline 105, forming an adjacent layout;

[0030] The output Y-shaped tube 201 is provided with two groups of air outlet holes at a position far away from the air pump 2. The two groups of air outlet holes are installed in the first annular hollow column 202 and the second annular hollow column 203 respectively. Auxiliary delivery pipes 204 are installed in the first annular hollow column 202 and the second annular hollow column 203. The number of auxiliary delivery pipes 204 is two groups.

[0031] In the embodiment of the present application, the specific working process of the embodiment of this part of the application is as follows: when the control unit determines that there is a leak at the connection between the flange 106 and the external pipeline, the air pump 2 generates compressed air, which is input into the interior of the rubber ring 304 through a group of air outlets corresponding to the output Y-shaped tube 201 and a group of auxiliary delivery pipes 204, driving the rubber ring 304 to be in an expanded state and attached to the outer side of the connection between the flange 106 and the external pipeline, thereby achieving the effect of temporarily blocking the leak, preventing external gas from entering the reaction chamber of the reduction device body 1, and causing a certain impact on the production efficiency;

[0032] When the control unit determines that the connection between the flange 106 and the external pipeline is not completely limited, the air pump 2 generates compressed air, which is input into the rubber plate 307 through another set of air outlet holes corresponding to the output Y-tube 201 and a corresponding set of auxiliary delivery pipes 204, driving the rubber plate 307 to be in an expanded state. The expanded rubber plate 307 squeezes the surface of the external pipeline, driving the external pipeline to move toward the position of the flange 106, thereby achieving the effect of temporarily limiting and fixing the connection between the flange 106 and the external pipeline, avoiding the falling-off phenomenon between the two, and ensuring that the restoration device body 1 works normally.

[0033] Reference Figures 2 to 6As shown, the present invention provides a rare earth metal vacuum thermal reduction preparation device, the flange 106 is provided with a support plate 301 at equal distances along the circumferential direction on the side of the position near the output pipe 105 and the input pipe 102, the support plate 301 is movably sleeved with a transmission rod 305 inside, the transmission rod 305 is provided with a limited U-shaped support 3 at one end away from the support plate 301, the inner side of the limited U-shaped support 3 near the transmission rod 305 is provided with a hollow column 302, the inner wall of the hollow column 302 is provided with a clamping column 308, the outer wall of the clamping column 308 is adapted to the inner wall of the hollow column 302, so as to be sleeved in parallel and coaxially. The inner wall of the clamping column 308, and one end of the clamping column 308 extends to the outside of the opening of the hollow column 302, the clamping column 308 is installed with a first spring 309 on the side close to the hollow column 302, and one end of the first spring 309 away from the clamping column 308 is installed at the bottom of the hollow column 302, the geometric center point of the first spring 309 is in a straight line with the geometric center point of the hollow column 302, the flange 106 is installed with a slot column 303 at a position close to the clamping column 308, and the inner wall of the slot column 303 is provided with a storage chamber adapted to the outer wall of the clamping column 308, so that the clamping column 308 can be fixed in the storage chamber of the slot column 303;

[0034] A rubber ring 304 is installed on the inner side surface of the middle position of the limiting U-shaped bracket 3, and an air pressure sensor is installed inside the rubber ring 304. The air pressure sensor collects air pressure data in the rubber ring 304 and transmits it to the control unit for analysis. A friction layer 306 is installed on the outer side surface of the limiting U-shaped bracket 3 away from the hollow column 302. A card slot is opened on the inner side surface of the limiting U-shaped bracket 3 away from the hollow column 302. A rubber plate 307 is movably sleeved in the card slot, and the inner wall of the card slot is adapted to the outer side surface of the rubber plate 307. Second springs 311 are installed at both ends of the side surface of the rubber plate 307 close to the card slot position. The second spring 311 is vertically installed in the card slot. A weight sensor 312 is installed at the middle position of the side surface of the rubber plate 307 close to the card slot position. The weight sensor 312 collects pressure data generated when the rubber plate 307 contacts the external pipeline and transmits it to the control unit. A rubber suction cup 310 is installed on the side of the rubber plate 307 away from the card slot position.

[0035] In the embodiment of the present application, the specific working process of the embodiment of this part of the application is as follows: after the flange 106 and the external pipe are installed, the staff controls the limit U-shaped bracket 3 to rotate with the support of the transmission rod 305 by contacting the friction layer 306, until the clamping column 308 is clamped into the accommodation chamber of the clamping slot column 303, at this time, the limit U-shaped bracket 3 maintains the adjusted angle, and at the same time, the rubber ring 304 contacts the connection between the friction layer 306 and the external pipe, and the rubber suction cup 310 contacts the side of the external pipe and adsorbs on the surface, when the flange 106 and the external pipe leak, an adsorption force is generated at the leaking place, and a part of the rubber ring 304 is driven to be adsorbed to the leaking place between the flange 106 and the external pipe, and the internal volume of the rubber ring 304 changes, so the corresponding air pressure data generated by the air pressure sensor changes, and the control unit analyzes the air pressure data to determine whether there is a leak at the connection between the flange 106 and the external pipe;

[0036] When the flange 106 is not completely connected to the external pipeline, the pressure data inside the input pipeline 102 and the output pipeline 105 control the external pipeline to apply an additional pressure to the rubber plate 307, and the pressure data collected by the weight sensor 312 changes. The control unit analyzes the pressure data to determine whether the flange 106 is not completely connected to the external pipeline.

[0037] Reference Figures 1 to 6 As shown, the present invention provides a rare earth metal vacuum thermal reduction preparation device, wherein the control unit includes a threshold module and a reminder unit;

[0038] The threshold module simulates the simulated air pressure data generated by the air pressure sensor when the flange 106 is in a normal connection state with the external pipeline, and integrates the simulated air pressure data to form a first threshold range. The control unit compares the real-time air pressure data with the first threshold range. When the real-time air pressure data is not within the first threshold range, it is determined that there is a leakage at the connection between the flange 106 and the external pipeline. The air pump 2 generates compressed air and delivers it to the inside of the rubber ring 304, driving the rubber ring 304 to be in an expanded state and attached to the leakage between the flange 106 and the external pipeline. At the same time, the control unit drives the reminder unit to send a warning message to the staff to remind them to arrive at the site for inspection;

[0039] The threshold module simulates the simulated pressure data generated by the weight sensor 312 when the flange 106 is in a normal connection state with the external pipeline, and integrates the simulated pressure data to form a second threshold range. The control unit compares the real-time pressure data with the second threshold range. When the real-time pressure data is not within the second threshold range, it is determined that the connection between the flange 106 and the external pipeline is not complete. The air pump 2 generates compressed air and delivers it to the inside of the rubber plate 307, driving the rubber plate 307 to be in an expanded state, achieving a temporary limit to fix the flange 106 and the external pipeline. At the same time, the control unit drives the reminder unit to send an early warning message to the staff, reminding them to arrive at the site for inspection.

[0040] The specific workflow of this application is as follows:

[0041] Step 1: transport the prepared rare earth compound and the reducing agent to the reaction chamber of the reduction device body 1 to carry out a reduction reaction. During the reaction, the vacuum pump 104 inputs current to carry out a vacuum reaction in the reaction chamber of the reduction device body 1 to remove air and moisture in the reaction chamber. Under high temperature and vacuum conditions, the reducing agent and the rare earth compound undergo a thermal reduction reaction to generate rare earth metals and corresponding compounds, which are discharged from the reaction chamber through the output pipe 105.

[0042] Step 2: When the control unit determines that there is a leak at the connection between the flange 106 and the external pipeline, the air pump 2 generates compressed air, which is input into the interior of the rubber ring 304 through a group of air outlets corresponding to the output Y-shaped tube 201 and a group of auxiliary delivery pipes 204, driving the rubber ring 304 to be in an expanded state and attached to the outer side of the connection between the flange 106 and the external pipeline, thereby temporarily blocking the leak and preventing external gas from entering the reaction chamber of the reduction device body 1, which has a certain impact on the production efficiency.

[0043] When the control unit determines that the flange 106 and the external pipeline connection are not completely limited, the air pump 2 generates compressed air, which is input into the rubber plate 307 through another set of air outlet holes corresponding to the output Y-shaped tube 201 and a corresponding set of auxiliary delivery tubes 204, driving the rubber plate 307 to be in an expanded state. The rubber plate 307 in the expanded state squeezes the surface of the external pipeline, driving the external pipeline to move toward the flange 106 position, achieving the effect of temporarily limiting and fixing the flange 106 and the external pipeline connection, avoiding the falling-off phenomenon between the two, and ensuring that the restoration device body 1 works normally;

[0044] Step 3, after the flange 106 and the external pipeline are installed, the staff controls the limited U-shaped bracket 3 to rotate with the support of the transmission rod 305 by contacting the friction layer 306, until the clamping column 308 is clamped into the accommodation chamber of the clamping slot column 303, at this time, the limited U-shaped bracket 3 maintains the adjusted angle, and the rubber ring 304 contacts the connection between the friction layer 306 and the external pipeline, and the rubber suction cup 310 contacts the side of the external pipeline and adsorbs on the surface. When the flange 106 and the external pipeline leak, an adsorption force is generated at the leaking point, and a part of the rubber ring 304 is driven to be adsorbed to the leaking point between the flange 106 and the external pipeline. The internal volume of the rubber ring 304 changes, so the air pressure data generated by the corresponding air pressure sensor changes, and the control unit analyzes the air pressure data to determine whether there is a leak at the connection between the flange 106 and the external pipeline.

[0045] When the flange 106 is not completely connected to the external pipeline, the pressure data inside the input pipeline 102 and the output pipeline 105 control the external pipeline to apply an additional pressure to the rubber plate 307, and the pressure data collected by the weight sensor 312 changes. The control unit analyzes the pressure data to determine whether the flange 106 is not completely connected to the external pipeline.

[0046] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0047] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0048] Finally: 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rare earth metal vacuum thermal reduction preparation device, comprising a reduction device body (1), characterized in that: An input pipe (102) is installed through the inner wall on the right side of the top of the reduction device body (1), and an output pipe (105) is installed through the inner wall on the left side of the bottom of the reduction device body (1), and flanges (106) are installed on the sides of the input pipe (102) and the output pipe (105). A limit bracket (103) is installed on the upper surface of the reduction device body (1), and a vacuum pump (104) is installed in the middle position of the upper surface of the limit bracket (103), and the output end of the vacuum pump (104) is installed inside the reduction device body (1); A control unit is arranged inside the reduction device body (1), and an air pump (2) is installed on the lower surface of the limiting bracket (103).

2. A rare earth metal vacuum thermal reduction preparation device according to claim 1, characterized in that: The output end of the air pump (2) is provided with two groups of output Y-shaped tubes (201), and the first annular hollow column (202) and the second annular hollow column (203) are installed adjacent to each other on the outer side surfaces of the middle positions of the input pipe (102) and the output pipe (105). The first annular hollow column (202) and the second annular hollow column (203) are installed adjacent to each other on the outer side surfaces of the output pipe (105), forming an adjacent layout.

3. A rare earth metal vacuum thermal reduction preparation device according to claim 1, characterized in that: The output Y-shaped tube (201) is provided with two groups of air outlet holes at a position far away from the air pump (2), and the two groups of air outlet holes are installed in sequence inside the first annular hollow column (202) and the second annular hollow column (203), and auxiliary delivery pipes (204) are installed inside the first annular hollow column (202) and the second annular hollow column (203), and the number of the auxiliary delivery pipes (204) is two groups.

4. A rare earth metal vacuum thermal reduction preparation device according to claim 1, characterized in that: Support plates (301) are installed at equal distances along the circumferential direction on the side of the flange (106) close to the output pipe (105) and the input pipe (102), and a transmission rod (305) is movably sleeved inside the support plate (301).

5. A rare earth metal vacuum thermal reduction preparation device according to claim 4, characterized in that: The transmission rod (305) is provided with a limited U-shaped bracket (3) at one end away from the bracket plate (301); a hollow column (302) is provided on the inner side surface of the limited U-shaped bracket (3) close to the transmission rod (305); a clamping column (308) is provided on the inner wall of the hollow column (302); the outer wall of the clamping column (308) is matched with the inner wall of the hollow column (302) so as to be parallelly and coaxially sleeved on the inner wall of the clamping column (308); and one end of the clamping column (308) extends to the outside of the opening of the hollow column (302).

6. A rare earth metal vacuum thermal reduction preparation device according to claim 5, characterized in that: The clamping column (308) is provided with a first spring (309) on the side close to the hollow column (302), and one end of the first spring (309) away from the clamping column (308) is installed at the bottom of the hollow column (302), and the geometric center point of the first spring (309) is on a straight line with the geometric center point of the hollow column (302).

7. A rare earth metal vacuum thermal reduction preparation device according to claim 5, characterized in that: The flange (106) is provided with a slot column (303) at a position close to the slot column (308), and the inner wall of the slot column (303) is provided with a receiving chamber matched with the outer wall of the slot column (308), so that the slot column (308) can be fixed in the receiving chamber of the slot column (303).

8. The rare earth metal vacuum thermal reduction preparation device according to claim 5, characterized in that: A rubber ring (304) is installed on the inner side surface of the middle position of the limiting U-shaped bracket (3), and an air pressure sensor is installed inside the rubber ring (304). The air pressure sensor collects air pressure data in the rubber ring (304) and transmits it to the control unit for analysis. A friction layer (306) is installed on the outer side surface of the limiting U-shaped bracket (3) away from the hollow column (302), and a card slot is opened on the inner side surface of the limiting U-shaped bracket (3) away from the hollow column (302). A rubber plate (307) is movably sleeved in the card slot, and the inner wall of the card slot Matching with the outer side surface of the rubber plate (307), the second springs (311) are installed at both ends of the side surface of the rubber plate (307) close to the slot position, and the second spring (311) is installed vertically in the slot. A weight sensor (312) is installed at the middle position of the side surface of the rubber plate (307) close to the slot position, and the weight sensor (312) collects pressure data generated when the rubber plate (307) contacts the external pipeline and transmits it to the control unit. A rubber suction cup (310) is installed on the side surface of the rubber plate (307) away from the slot position.

9. A rare earth metal vacuum thermal reduction preparation device according to claim 5, characterized in that: The control unit includes a threshold module and a reminder unit; The threshold module simulates the simulated air pressure data generated by the air pressure sensor when the flange (106) is in a normal connection state with the external pipeline, and integrates the simulated air pressure data to form a first threshold range. The control unit compares the real-time air pressure data with the first threshold range. When the real-time air pressure data is not within the first threshold range, it is determined that a leakage occurs at the connection between the flange (106) and the external pipeline. The air pump (2) generates compressed air and delivers it to the inside of the rubber ring (304), driving the rubber ring (304) to be in an expanded state and attached to the leakage between the flange (106) and the external pipeline. At the same time, the control unit drives the reminder unit to send a warning message to the staff to remind them to arrive at the site for inspection.

10. A rare earth metal vacuum thermal reduction preparation device according to claim 9, characterized in that: The threshold module simulates the simulated pressure data generated by the weight sensor (312) when the flange (106) and the external pipeline are in a normal connection state, and integrates the simulated pressure data to form a second threshold range. The control unit compares the real-time pressure data with the second threshold range. When the real-time pressure data is not within the second threshold range, it is determined that the flange (106) and the external pipeline are not completely connected. The air pump (2) generates compressed air and delivers it to the inside of the rubber plate (307), driving the rubber plate (307) to be in an expanded state, achieving a temporary limit to fix the flange (106) and the external pipeline. At the same time, the control unit drives the reminder unit to send a warning message to the staff to remind them to arrive at the site for inspection.

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