Sublimation furnace for metal hafnium production and control method

Abstract

The invention relates to the field of sublimation furnaces for metal hafnium production, and discloses a sublimation furnace for metal hafnium production and a control method.The sublimation furnace for metal hafnium production comprises a base plate, the upper end of the base plate is connected with a fixing table through bolts, and the upper end of the fixing table connects and fixes a supporting frame through screws; the large metal particles can be blocked by the screen plate, the small particles can enter the lower portion through the filtering groove holes, the pushing plate pushes materials above the filtering screen plate along with rotation of the rotating rod, the materials are helped to better pass through the filtering screen plate, the screening speed of the particles is increased, and the situation that due to the size difference of the metal particles, the metal particles in the sublimation furnace are separated from one another can be avoided. In the sublimation process, temperature distribution is uneven, small particles can be heated and sublimated faster due to the large surface area, large particles can be heated and sublimated for a longer time, local overheating or incomplete sublimation caused by uneven temperature distribution in the sublimation furnace is prevented, and it is ensured that the temperature distribution in the sublimation furnace is more even.

Description

Technical Field

[0001] The invention relates to the field of a sublimation furnace for producing metal hafnium, and in particular to a sublimation furnace for producing metal hafnium and a control method thereof. Background Art

[0002] The production process of hafnium metal usually requires a series of high-temperature treatments, in which the sublimation furnace plays an important role. As an important equipment in metal purification, smelting and processing, the sublimation furnace is mainly used to sublimate metals or metal compounds into gas under high temperature conditions, and then re-condense them into metals or alloys through cooling or other means. This process has important applications in metal purification, alloying and other smelting links. The sublimation furnace uses high temperature to heat the metal material, so that it directly changes from solid to gas (sublimation) at high temperature, and then re-condenses the metal gas into solid metal or alloy through cooling and other operations (such as deposition and collection). This process can remove impurities in the metal and obtain a higher purity metal product. Usually, the temperature inside the sublimation furnace needs to be controlled very precisely.

[0003] However, in actual applications, metal raw materials are put into the furnace and their temperature is gradually increased by heating. The temperature in the sublimation furnace needs to be gradually increased to the sublimation point of the metal, that is, the temperature at which the metal changes from solid to gas. At a sufficiently high temperature, the metal will sublimate and change from solid to gas. Different metals have different sublimation temperatures, and the sublimation furnace needs to precisely control the temperature. During the sublimation process, metal impurities usually do not sublimate along with the metal vapor. Impurity substances will be deposited in different areas of the furnace, or exist in other forms in the gas, thereby achieving the purpose of removing impurities. After the metal is sublimated, the metal vapor is transported to the condensation zone through the air flow in the furnace. In the condensation zone, the temperature gradually decreases, and the metal vapor begins to condense into solid metal. The condensation system usually includes a cooler or condenser, which uses a cooling medium (such as water or gas) to reduce the temperature of the metal vapor. The condensed metal solid will be deposited on the surface of the condenser or in other collection devices, which can be collected and used for subsequent processing.

[0004] Since the metal raw materials are put into the furnace for sublimation, the metal raw materials include particles of different sizes. The size difference of the metal particles may cause uneven temperature distribution during the sublimation process. Smaller particles have a larger surface area and may sublime faster, while larger particles may take longer to complete sublimation, resulting in uneven temperature distribution inside the sublimation furnace. Larger particles may delay the sublimation process due to uneven heating, and even cause local overheating or incomplete sublimation. Summary of the invention

[0005] In order to solve the above technical problems, a sublimation furnace and a control method for producing metal hafnium are provided. The technical solution solves the problem raised in the above background technology that when the metal raw materials are put into the furnace for sublimation, the metal raw materials include particles of different sizes. The size difference of the metal particles may cause uneven temperature distribution during the sublimation process. Smaller particles have a larger surface area and may sublimate faster, while larger particles may take longer to complete sublimation, resulting in uneven temperature distribution inside the sublimation furnace. Larger particles may delay the sublimation process due to uneven heating, and even cause local overheating or incomplete sublimation.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows: comprising a base plate, the upper end of the base plate is connected to a fixing platform by bolts, the upper end of the fixing platform is connected and fixed to a support frame by screws, a sublimation furnace body is fixedly installed on the upper end of the support frame, a feeding port is installed on the upper end of the sublimation furnace body, a heating furnace body is installed inside the sublimation furnace body, a placement inner wall is arranged inside the heating furnace body, outer ring plates are installed on the outer sides of both sides of the sublimation furnace body, and a heat insulation pad is fixedly installed on one end of the sublimation furnace body and the outer ring plate; A metal screening mechanism, wherein the metal screening mechanism is arranged beside the sublimation furnace body; A suction pump feeding mechanism, wherein the suction pump feeding mechanism is fixedly mounted on the upper end of the feeding port; A cooling mechanism, wherein the cooling mechanism is arranged on both sides of the sublimation furnace body; A moving mechanism, wherein the moving mechanism is installed at the lower end of the base plate; The regulating mechanism is arranged at the upper end of the sublimation furnace body.

[0007] Preferably, the metal screening mechanism includes a supporting base, a supporting fixing frame is fixedly installed on the upper end of the supporting base, the supporting fixing frame is connected to both sides of the metal screening tank by screws, a built-in filter cartridge is arranged inside the metal screening tank, the built-in filter cartridge is connected and fixed to the inner side of the metal screening tank by fasteners, a filter mesh plate is installed at the lower end of the built-in filter cartridge, and filter slots are opened inside the filter mesh plate.

[0008] Preferably, a tank cover is installed at the upper end of the metal screening tank, a feed hopper is installed at the upper end of the tank cover, a servo motor is connected to the upper end of the tank cover by screws, a rotating rod is installed at the lower end of the servo motor, a stirring rod is fixedly installed on the outer side of the rotating rod, and the stirring rod is arranged on the inner side of the built-in filter cylinder.

[0009] Preferably, a push plate is fixedly mounted on the outer side of the rotating rod, the lower end of the push plate contacts the upper end surface of the filter screen plate, and push-in through holes are provided on the outer sides of the metal screening tank and the built-in filter cartridge.

[0010] Preferably, a discharge pipe is fixedly installed inside the push-in through hole, a spiral rod is installed inside the discharge pipe, a micro motor is fixedly installed at one end of the spiral rod, and an outlet pipe is installed at the lower end of the discharge pipe.

[0011] Preferably, the suction pump feeding mechanism includes a conveying pipe, one end of which is fixedly mounted on the lower end of the metal screening tank, one end of which is mounted inside a connecting sleeve, one end of which is mounted on the upper end of a fixed disc, and the lower end of the suction pump feeding mechanism is mounted on the upper end of a feeding port.

[0012] Preferably, the cooling mechanism includes a connecting block, a main valve is installed at one end of the connecting block, a hollow structure is opened inside the connecting block, cooling circulation pipes are installed at the upper and lower ends of the connecting block, a connecting valve is installed at one end of the cooling circulation pipe, and one end of the connecting valve is installed on both side ends of the sublimation furnace body and the fixed platform.

[0013] Preferably, the moving mechanism includes a fixed frame, the upper end of the fixed frame is fixedly mounted to the lower end of the base plate, an adjusting motor is arranged inside the fixed frame, a threaded rod is installed at the lower end of the adjusting motor, and the threaded rod is connected to the inside of the supporting chassis by rotation.

[0014] Preferably, the moving mechanism includes a fixed frame, the upper end of the fixed frame is fixedly mounted on the lower end of the base plate, an adjusting motor is arranged inside the fixed frame, a threaded rod is installed on the lower end of the adjusting motor, the threaded rod is connected to the inside of the supporting chassis by rotation, the supporting chassis is arranged inside the bracket tube, the upper end of the bracket tube is installed on the lower end of the fixed frame, the supporting chassis can be moved up and down inside the bracket tube for adjustment, a mounting bracket is fixedly mounted on the outer side of the bracket tube, and the mounting bracket is connected to a roller by rotation.

[0015] Preferably, the adjusting mechanism includes a connecting plate, the connecting plate is connected to the upper end of the furnace cover by screws, the furnace cover is closed at both ends of the sublimation furnace body, the upper end of the connecting plate is fixedly installed with a first fixing column, the outer side of the first fixing column is rotatably connected with a rotating sleeve, the outer side of the rotating sleeve is installed with a telescopic guide column, one end of the telescopic guide column is installed inside the telescopic hydraulic cylinder, one end of the telescopic hydraulic cylinder is installed on one end of the movable sleeve plate, the movable sleeve plate is rotatably connected to the outer side of the second fixing column, the lower end of the second fixing column is installed on the upper end of the support plate, the lower end of the support plate is connected to the upper end of the sublimation furnace body by screws, a concave fixing frame is fixedly installed on one side of the outer ring plate of the sublimation furnace body, the concave fixing frame is installed with a hinge bolt, the hinge bolt passes through the interior of the rotating plate, and the concave fixing frame is fixedly installed on one side of the furnace cover, a temperature sensor is provided at one end of the furnace cover, and a handle is installed at one end of the temperature sensor.

[0016] Compared with the prior art, the present invention provides a sublimation furnace and a control method for producing metal hafnium, which have the following beneficial effects: First, the present invention realizes efficient graded screening of metal particles through the synergistic effect of the built-in filter cartridge, filter screen plate and push plate. The built-in filter cartridge adopts a multi-layer filter slot structure, combined with a stirring rod driven by a servo motor and a rotating push plate, which can dynamically disperse the material and accelerate the passage of small particles during the screening process, while pushing large particles to the discharge pipe in a directional manner. This design effectively solves the problem of easy clogging and low efficiency of traditional screening equipment, ensures that the particle size of metal particles entering the sublimation furnace is uniform, avoids the uneven heating phenomenon caused by differences in particle size from the source, significantly improves the stability of the temperature field in the furnace, and makes the sublimation reaction more uniform and controllable.

[0017] Second, the suction pump feeding mechanism of the present invention innovatively adopts a dual-mode linkage mechanism of negative pressure conveying and spiral discharge. The screened small particles are accurately transported to the feeding port through the negative pressure pipeline, while the large particles are forcibly discharged by the spiral rod driven by the micro motor, forming a closed-loop material processing system. The specially designed fixed disc connection structure ensures the sealing of the pipeline and achieves nearly complete material conveying efficiency. This design not only greatly improves the continuity of material transportation, but also significantly enhances the uniformity of sublimation furnace feeding through intelligent control, reducing the frequency of manual intervention and the risk of production interruption.

[0018] Third, the adjustment mechanism of the present invention is the first intelligent lid opening system with hydraulic-mechanical linkage. It drives the multi-stage rotating sleeve structure through a telescopic hydraulic cylinder, and cooperates with the real-time feedback of the temperature sensor to achieve dynamic matching of the furnace cover opening and closing angle and the sublimation temperature. This mechanism can accurately control the temperature fluctuation range in the furnace, and achieve rapid response and stable adjustment. The special design of the concave fixing frame and the hinge bolt makes the movement trajectory of the furnace cover more precise, which significantly improves the maintenance efficiency while ensuring high-temperature sealing, and reduces heat energy loss and operational safety hazards.

[0019] Fourth, the cooling mechanism of the present invention adopts a modular layered cooling design, realizes coolant diversion through the hollow structure in the connecting block, and forms a gradient cooling effect with the adjustable connecting valve. The cooling circulation pipe is distributed in a spiral shape along the axial direction of the sublimation furnace body, which greatly increases the heat exchange area and makes the temperature gradient in the condensation zone more in line with the requirements of metal vapor condensation dynamics. This design significantly improves the metal vapor condensation efficiency and obtains high-purity crystalline products, while reducing the energy consumption of the cooling system and extending the continuous and stable operation time of the equipment.

[0020] Fifth, the mobile mechanism of the present invention creatively combines threaded lifting with universal wheels, and realizes the rapid conversion of the equipment between the mobile state and the working state by adjusting the motor to drive the double threaded rods to synchronously lift the supporting chassis. The guide structure in the bracket tube ensures the high precision of the lifting process, and with the reinforced mounting bracket, it can stably carry heavy equipment. This design greatly shortens the equipment positioning time and significantly improves the site adaptability. It is particularly suitable for flexible production scenarios with multi-production line collaboration, which can qualitatively improve the equipment deployment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle; Figure 2 It is a schematic diagram of the overall structure of the second viewing angle of the present invention; Figure 3 This is a schematic diagram of the structure of the built-in filter cartridge and metal screening tank of the present invention; Figure 4 It is a schematic diagram of the filter screen plate, filter slots and stirring rod structure of the present invention; Figure 5 It is a schematic diagram of the push plate and the rotating rod structure of the present invention; Figure 6 It is a schematic diagram of the structure of the spiral rod and the micro motor of the present invention; Figure 7 It is a schematic diagram of the adjustment mechanism and furnace cover structure of the present invention; Figure 8 It is a schematic diagram of the structure of the heat insulation pad, the heating furnace body and the outer ring plate of the present invention; Fig. 9 It is a schematic diagram of the structure of the mobile mechanism and the fixed platform of the present invention; Fig.10 It is a schematic diagram of the supporting chassis, mounting bracket and roller structure of the present invention; Fig.11 It is a schematic diagram of the support tube and threaded rod structure of the present invention.

[0022] The numbers in the figure are: 1. Base plate; 101. Furnace cover; 102. Sublimation furnace body; 103. Fixing table; 104. Temperature sensor; 105. Handle; 106. Heat insulation pad; 107. Heating furnace body; 108. Place inner wall; 109. Feeding port; 110. Support frame; 111. Outer ring plate; 2. Metal screening mechanism; 201. Support base; 202. Tank cover; 203. Feed hopper; 204. Metal screening tank; 205. Support bracket; 206. Fastener; 208. Discharge pipe; 209. Built-in filter cartridge; 210. Servo motor; 211. Stirring rod; 212. Micro motor; 213. Outlet pipe; 214. Push-in through hole; 215. Filter screen plate; 216. Filter slot; 217. Rotating rod; 218. Pushing plate; 219. Screw rod; 3. Suction pump feeding mechanism; 301. Delivery pipeline; 302. Fixed disc; 303. Connecting sleeve; 4. Cooling mechanism; 401. Connecting block; 402. Main valve; 403. Connecting valve; 404. Cooling circulation pipe; 5. Moving mechanism; 501. Fixed frame; 502. Support chassis; 503. Adjusting motor; 504. Mounting bracket; 505. Roller; 508. Bracket tube; 509. Threaded rod; 6. Adjustment mechanism; 601. Connecting plate; 602. First fixed column; 603. Rotating sleeve; 604. Telescopic guide column; 605. Telescopic hydraulic cylinder; 606. Second fixed column; 607. Support plate; 608. Movable sleeve plate; 609. Articulated bolt; 610. Concave fixing frame; 611. Rotating plate. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0024] Please refer to Figure 1-Figure 2 , Figure 8 As shown, a sublimation furnace for producing metal hafnium, comprising: A base plate 1, the upper end of the base plate 1 is connected to a fixing platform 103 by bolts, the upper end of the fixing platform 103 is connected and fixed to a support frame 110 by screws, a sublimation furnace body 102 is fixedly installed on the upper end of the support frame 110, a feeding port 109 is installed on the upper end of the sublimation furnace body 102, a heating furnace body 107 is installed inside the sublimation furnace body 102, an inner wall 108 is arranged inside the heating furnace body 107, outer ring plates 111 are installed on the outer sides of both sides of the sublimation furnace body 102, and a heat insulation pad 106 is fixedly installed between the sublimation furnace body 102 and one end of the outer ring plate 111; A metal screening mechanism 2, which is arranged beside the sublimation furnace body 102; The suction pump feeding mechanism 3 is fixedly mounted on the upper end of the feeding port 109; A cooling mechanism 4, which is arranged on both sides of the sublimation furnace body 102; A moving mechanism 5, the moving mechanism 5 is mounted on the lower end of the base plate 1; The adjusting mechanism 6 is arranged at the upper end of the sublimation furnace body 102 .

[0025] Please refer to Figure 1-Figure 6 As shown, the metal screening mechanism 2 includes a support base 201, a support fixing frame 205 is fixedly installed on the upper end of the support base 201, and the support fixing frame 205 is connected to both sides of the metal screening tank 204 by screws. The metal screening tank 204 is provided with a built-in filter cartridge 209 inside, and the built-in filter cartridge 209 is connected and fixed to the inner side of the metal screening tank 204 by fasteners 206. A filter screen plate 215 is installed at the lower end of the built-in filter cartridge 209, and a filter slot 216 is provided inside the filter screen plate 215. A tank cover 202 is installed at the upper end of the metal screening tank 204, and a feed hopper 203 is installed at the upper end of the tank cover 202. The upper end of the tank cover 202 is connected to a servo motor 2 by screws. 10. A rotating rod 217 is installed at the lower end of the servo motor 210, and a stirring rod 211 is fixedly installed on the outer side of the rotating rod 217. The stirring rod 211 is arranged on the inner side of the built-in filter cartridge 209. A push plate 218 is fixedly installed on the outer side of the rotating rod 217. The lower end of the push plate 218 contacts the upper end surface of the filter screen plate 215. The metal screening tank 204 and the outer side of the built-in filter cartridge 209 are provided with a push-in hole 214. A discharge pipe 208 is fixedly installed inside the push-in hole 214. A spiral rod 219 is installed inside the discharge pipe 208. A micro motor 212 is fixedly installed on one end of the spiral rod 219. An outlet pipe 213 is installed at the lower end of the discharge pipe 208.

[0026] In actual use, the metal material to be screened is fed into the metal screening tank 204 through the feed hopper 203, the servo motor 210 is started, and the rotating rod 217 is driven to rotate. The rotating rod 217 drives the stirring rod 211 to stir the material in the metal screening tank 204 to ensure that the material is evenly distributed, prevent particle accumulation, and help particles pass through the filter screen plate 215. The material passes through the filter screen plate 215 with the built-in filter cylinder 209. Larger metal particles will be blocked by the screen plate, while smaller particles will enter the bottom through the filter slot 216. The push plate 218 pushes the material above the filter screen plate 215 as the rotating rod 217 rotates, helping the material to pass through the filter screen plate 215 better and speeding up the particle removal. The screening speed of particles is increased. When the metal raw materials are screened for particle size, larger metal particles will remain on the filter screen plate 215. By rotating the push plate 218, the larger metal raw materials are pushed into the push-in hole 214. Then, the micro motor 212 is driven to drive the spiral rod 219 to rotate inside the discharge pipe 208, and the larger metal raw materials are further pushed to the outlet pipe 213 for discharge. This can avoid uneven temperature distribution during the sublimation process caused by differences in the size of the metal particles. Smaller particles with larger surface areas will sublime faster, while larger particles will take longer to complete sublimation, thereby preventing uneven temperature distribution inside the sublimation furnace from causing local overheating or incomplete sublimation.

[0027] Through the metal screening mechanism 2, through the filter mesh plate 215 and the built-in filter cartridge 209, larger metal particles will be blocked by the mesh plate, while smaller particles will enter below through the filter slot 216. The push plate 218 pushes the material above the filter mesh plate 215 as the rotating rod 217 rotates, helping the material to pass through the filter mesh plate 215 better and speeding up the screening of particles. This can avoid the uneven temperature distribution during the sublimation process in the sublimation furnace caused by the size difference of metal particles. Smaller particles with a larger surface area will heat and sublimate faster, while larger particles will take longer to complete heating and sublimation, preventing uneven temperature distribution inside the sublimation furnace from causing local overheating or incomplete sublimation, ensuring that the temperature distribution inside the sublimation furnace is more uniform, and the stirring rod 211 can be used to disperse the accumulated metal raw materials to prevent metal particles from accumulating.

[0028] Please refer to Figure 1-Figure 2 , Figure 8As shown, the suction pump feeding mechanism 3 includes a conveying pipe 301, one end of which is fixedly installed at the lower end of the metal screening tank 204, one end of the conveying pipe 301 is installed inside the connecting sleeve 303, one end of the connecting sleeve 303 is installed on the upper end of the fixed disc 302, and the lower end of the suction pump feeding mechanism 3 is installed on the upper end of the feeding port 109. In actual use, when the motor is started, the impeller starts to rotate at a high speed. The rotation of the impeller causes the gas to be subjected to the effect of centrifugal force, thereby forming a low-pressure area at the inlet of the impeller. Due to the rotation of the impeller, a negative pressure area is formed at the inlet of the impeller. This negative pressure area causes the metal material to be sucked in, and then the screened metal particle raw material at the bottom of the metal screening tank 204 is transported from the conveying pipe 301, and further the metal particle raw material is transported to the inside of the sublimation furnace.

[0029] Please refer to Figure 1 , Figure 7 As shown, the cooling mechanism 4 includes a connecting block 401, one end of which is provided with a main valve 402, the interior of the connecting block 401 is provided with a hollow structure, the upper and lower ends of the connecting block 401 are provided with a cooling circulation pipe 404, one end of the cooling circulation pipe 404 is provided with a connecting valve 403, one end of the connecting valve 403 is provided with two side ends of the sublimation furnace body 102 and the fixed platform 103, in actual use, when the sublimation furnace is in operation, the main valve 402 is adjusted to allow the coolant to start flowing into the cooling circulation pipe 404, the coolant flows through the cooling circulation pipe 404, contacts the two sides of the sublimation furnace body 102 and the fixed platform 103, absorbs heat through heat exchange, and the connecting valve 404 is closed. 03 Adjust the coolant flow rate as needed so that the heat can be evenly taken away. The coolant will flow through each cooling circulation pipe 404, and the flowing coolant will continuously absorb heat. The coolant that absorbs heat will flow back through the cooling system, and after being cooled by the cooling equipment, it will enter the cooling circulation pipe 404 again to continue the heat exchange. Condensation process: After the metal sublimates, the metal vapor is transported to the condensation zone through the air flow in the furnace. In the condensation zone, the temperature gradually decreases, and the metal vapor begins to condense into solid metal. The condensation system usually includes a cooler or condenser, which uses a cooling medium (such as water or gas) to reduce the temperature of the metal vapor. The condensed metal solid will be deposited on the surface of the condenser or other collection devices.

[0030] Please refer to Figure 1 , Figure 9-11As shown, the moving mechanism 5 includes a fixed frame 501, the upper end of the fixed frame 501 is fixedly mounted on the lower end of the base plate 1, an adjusting motor 503 is arranged inside the fixed frame 501, a threaded rod 509 is installed at the lower end of the adjusting motor 503, and the threaded rod 509 is connected to the inside of the supporting chassis 502 by rotation, and the supporting chassis 502 is arranged inside the bracket tube 508, and the upper end of the bracket tube 508 is mounted on the lower end of the fixed frame 501, and the supporting chassis 502 can be moved up and down inside the bracket tube 508 for adjustment, and the bracket tube A mounting bracket 504 is fixedly installed on the outside of 508, and the mounting bracket 504 is connected to the roller 505 by rotation. In actual use, it is first placed when the entire device is moved to other areas, and the threaded rod 509 is driven to rotate by the adjusting motor 503, which further drives the support chassis 502 to move up and down, and then move up and down inside the bracket tube 508. When the support chassis 502 moves downward, the support chassis 502 contacts the ground, which can support the entire device and lift the roller 505 off the ground.

[0031] Please refer to Figure 2 , Figure 7-Figure 8 As shown, the adjustment mechanism 6 includes a connecting plate 601, which is connected to the upper end of the furnace cover 101 by screws. The furnace cover 101 is closed at both ends of the sublimation furnace body 102. The upper end of the connecting plate 601 is fixedly installed with a first fixed column 602, and the outer side of the first fixed column 602 is rotatably connected with a rotating sleeve 603. The outer side of the rotating sleeve 603 is installed with a telescopic guide column 604, one end of the telescopic guide column 604 is installed inside the telescopic hydraulic cylinder 605, and one end of the telescopic hydraulic cylinder 605 is installed on one end of a movable sleeve plate 608. The movable sleeve plate 608 is rotatably connected to the outer side of the second fixed column 606. The lower end is installed on the upper end of the support plate 607, and the lower end of the support plate 607 is connected to the upper end of the sublimation furnace body 102 by screws. A concave fixing frame 610 is fixedly installed on one side of the outer ring plate 111 of the sublimation furnace body 102, and the concave fixing frame 610 is installed with a hinge bolt 609. The hinge bolt 609 passes through the inside of the rotating plate 611, and the concave fixing frame 610 is fixedly installed on one side of the furnace cover 101. A temperature sensor 104 is provided at one end of the furnace cover 101, and a handle 105 is installed at one end of the temperature sensor 104. The temperature sensor 104 is a common Pt100RTD, which is often used for accurate measurement of medium temperature ranges.

[0032] In actual use, when the heating and sublimation process of the metal inside the sublimation furnace is completed, the telescopic guide column 604 is moved by driving the telescopic hydraulic cylinder 605, and then the rotating sleeve 603 is driven to rotate on the first fixed column 602, and the furnace cover 101 is further opened and closed. The telescopic hydraulic cylinder 605 rotates through the movable sleeve plate 608. When the furnace cover 101 is opened or closed, the hinge bolt 609 inside the concave fixed frame 610 rotates, which can reduce the manual operation of the staff to open or close the furnace cover 101. Since the device is equipped with a temperature sensor 104 and a hydraulic adjustment system, it can monitor the temperature in the furnace in real time and adjust the opening and closing state of the furnace cover 101 to ensure that the temperature during the sublimation process is maintained within the set range, avoid the influence of excessively high or low temperature on the sublimation process, and effectively avoid leakage or safety hazards that may occur during the sublimation process, especially for operations under high temperature or high pressure environments.

[0033] By driving the telescopic hydraulic cylinder 605, the telescopic guide column 604 and the rotating sleeve 603 are driven to rotate on the first fixed column 602, so as to realize the automatic opening and closing of the furnace cover 101, reduce the need for manual operation of the staff, improve the operation efficiency and safety, and the equipped temperature sensor 104 can monitor the temperature in the sublimation furnace in real time, and adjust the opening and closing state of the furnace cover 101 through the hydraulic adjustment system to ensure that the temperature in the sublimation process is maintained within the set range, so as to avoid the influence of too high or too low temperature on the sublimation process.

[0034] The working principle and control method of this device are as follows: S1, transporting the metal raw materials into the sublimation furnace; S2, by passing the metal material to be screened into the metal screening tank 204 through the feed hopper 203, the servo motor 210 is started, driving the rotating rod 217 to rotate, and the rotating rod 217 drives the stirring rod 211 to stir the material in the metal screening tank 204 to prevent the accumulation of particles, and the particles pass through the filter mesh plate 215, and the material passes through the filter mesh plate 215 with the built-in filter cylinder 209. Larger metal particles will be blocked by the mesh plate, while smaller particles will enter the bottom through the filter slot 216. The push plate 218 pushes the material above the filter mesh plate 215 as the rotating rod 217 rotates, helping the material to pass through the filter mesh plate 215 better and speed up the screening of the particles, so that the filtered and screened metal particles enter the bottom of the metal screening tank 204; S3. After the metal raw materials are screened into particle sizes, the larger metal particles will remain on the filter screen plate 215. By rotating the push plate 218, the larger metal raw materials are pushed into the push-in hole 214. Then, the micro motor 212 is driven to drive the screw rod 219 to rotate inside the discharge pipe 208, and the larger metal raw materials are further pushed to the outlet pipe 213 for discharge. S4. When driven by the air suction and pumping feeding mechanism 3, after the motor starts, the impeller begins to rotate at high speed. The rotation of the impeller causes the gas to be affected by the centrifugal force, thereby forming a low-pressure area at the impeller inlet. Due to the rotation of the impeller, a negative pressure area will be formed at the impeller inlet. This negative pressure area causes the metal material to be sucked in. Then, the screened metal particle raw materials at the bottom of the metal screening tank 204 are transported through the conveying pipeline 301, and further the metal particle raw materials are transported into the sublimation furnace; S4. The sublimation furnace body 102 is the core part of the entire equipment. The heating furnace body 107 is arranged inside to achieve temperature control and the sublimation process. The heating furnace body 107 provides a necessary high-temperature environment. The outer ring plate 111 and the heat insulation backing plate 106 reduce heat loss and ensure that the temperature of the equipment is controlled. The metal is heated at a high temperature by the sublimation furnace to sublimate it into a gaseous substance. During this process, the impurities in the metal usually separate in a gaseous form, while the pure metal component continues to sublimate; S5. When the sublimation furnace is operating, the main valve 402 is adjusted to allow the coolant to start flowing into the cooling circulation pipe 404. The coolant flows through the cooling circulation pipe 404 and contacts both sides of the sublimation furnace body 102 and the fixed platform 103, absorbing heat through heat exchange. The connecting valve 403 adjusts the coolant flow rate as needed, and the heat can be evenly removed. The coolant will flow through each cooling circulation pipe 404. The flowing coolant continuously absorbs heat. The coolant that has absorbed heat returns through the cooling system, and after being cooled by the cooling equipment, it enters the cooling circulation pipe 404 again to continue heat exchange. Condensation process: After the metal sublimates, the metal vapor is transported to the condensation area through the gas flow in the furnace. In the condensation area, the temperature gradually decreases, and the metal vapor begins to condense into solid metal. The condensation system usually includes a cooler or a condenser, which uses a cooling medium (such as water or gas) to lower the temperature of the metal vapor. The condensed metal solid will be deposited on the surface of the condenser or other collection devices; S6. When the heating and sublimation operation process of the metal inside the sublimation furnace ends, the telescopic hydraulic cylinder 605 is driven to drive the telescopic guide post 604 to move, and then drive the rotating sleeve 603 to rotate on the first fixed column 602, further performing the opening and closing operations of the furnace cover 101. And the telescopic hydraulic cylinder 605 rotates through the movable sleeve plate 608. When the furnace cover 101 is opened or closed, the hinge bolt 609 inside the concave fixed frame 610 rotates, which can reduce the manual operation of the staff to open or close the furnace cover 101. Since the device is equipped with a temperature sensor 104 and a hydraulic regulation system, it can monitor the temperature inside the furnace in real time and adjust the opening and closing state of the furnace cover 101; S7. First, when the entire device is moved to other areas, it is placed. The threaded rod 509 is driven to rotate by the adjusting motor 503, which further drives the supporting chassis 502 to move up and down, and then move up and down inside the bracket tube 508. When the supporting chassis 502 moves downward, the supporting chassis 502 contacts the ground, which can support the entire device and lift the roller 505 off the ground.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A sublimation furnace for producing metal hafnium, characterized in that: include: A base plate, the upper end of which is connected to a fixing platform by bolts, the upper end of which is fixed to a support frame by screws, and the upper end of which is equipped with a sublimation furnace body; A feeding port is arranged at the upper end of the sublimation furnace body, a heating furnace body is installed inside, an inner wall is arranged inside the heating furnace body, outer ring plates are arranged on both sides of the sublimation furnace body, and a heat insulation pad is arranged between the outer ring plate and the sublimation furnace body; A metal screening mechanism is arranged beside the sublimation furnace body; A suction pump feeding mechanism is fixedly installed on the upper end of the feeding port; A cooling mechanism is arranged on both sides of the sublimation furnace body; A moving mechanism, mounted on the lower end of the base plate; The regulating mechanism is arranged at the upper end of the sublimation furnace body.

2. The sublimation furnace for producing metal hafnium according to claim 1, characterized in that: The metal screening mechanism comprises a support base and a metal screening tank, the upper end of the support base is fixed with a support fixing frame, and the support fixing frame is connected to both sides of the metal screening tank by screws; A built-in filter cartridge is arranged inside the metal screening tank, and the built-in filter cartridge is fixed to the inner side of the metal screening tank by fasteners, and a filter screen plate is installed at the lower end, and filter slots are arranged on the filter screen plate.

3. The sublimation furnace for producing metal hafnium according to claim 2, characterized in that: A tank cover is installed on the upper end of the metal screening tank, and a feed hopper and a servo motor are arranged on the upper end of the tank cover; The lower end of the servo motor is connected to a rotating rod, a stirring rod is fixed on the outer side of the rotating rod, and the stirring rod is located on the inner side of the built-in filter cartridge.

4. The sublimation furnace for producing metal hafnium according to claim 3, characterized in that: A push plate is fixed outside the rotating rod, and the lower end of the push plate contacts the surface of the filter screen plate; The metal screening tank and the outer side of the built-in filter cartridge are provided with push-in through holes.

5. The sublimation furnace for producing metal hafnium according to claim 4, characterized in that: A discharge pipe is installed in the push-in through hole, and a spiral rod is arranged in the discharge pipe; One end of the spiral rod is connected to a micro motor, and an outlet pipe is arranged at the lower end of the discharge pipe.

6. The sublimation furnace for producing metal hafnium according to claim 1, characterized in that: The suction pump feeding mechanism comprises a conveying pipeline, one end of which is connected to the lower end of the metal screening tank, and the other end is connected to a fixed disc through a connecting sleeve, and the fixed disc is installed at the upper end of the feeding port.

7. The sublimation furnace for producing metal hafnium according to claim 1, characterized in that: The cooling mechanism comprises a connecting block, one end of which is provided with a main valve and the inside of which is provided with a hollow structure; The upper and lower ends of the connection block are connected to a cooling circulation pipe, and the cooling circulation pipe is connected to the sublimation furnace body and two sides of the fixing platform through a connecting valve.

8. The sublimation furnace for producing metal hafnium according to claim 1, characterized in that: The moving mechanism comprises a fixed frame, the upper end of which is fixed to the lower end of the base plate, and an adjusting motor is arranged inside the fixed frame; The lower end of the regulating motor is connected to a threaded rod, and the threaded rod is threadedly connected to the supporting chassis; The supporting chassis is arranged inside the bracket tube, the upper end of the bracket tube is connected to the lower end of the fixed frame, and a mounting bracket is arranged outside, and the mounting bracket is rotatably connected to the roller.

9. The sublimation furnace for producing metal hafnium according to claim 1, characterized in that: The adjustment mechanism includes a connecting plate, and the connecting plate is connected to the upper end of the furnace cover by screws; A first fixing column is fixed to the upper end of the connecting plate, and the outer side of the first fixing column is rotatably connected to the rotating sleeve; The outer side of the rotating sleeve is connected to a telescopic guide column, and one end of the telescopic guide column is connected to a telescopic hydraulic cylinder; One end of the telescopic hydraulic cylinder is connected to a movable sleeve plate, the movable sleeve plate is rotatably connected to a second fixed column, and the lower end of the second fixed column is fixed to a support plate; A concave fixing frame is provided on one side of the outer ring plate of the sublimation furnace body, and the concave fixing frame is connected to the rotating plate through a hinge bolt; A temperature sensor and a handle are arranged on one side of the furnace cover.

10. The control method for a sublimation furnace for producing metal hafnium according to any one of claims 1 to 9, characterized in that: include: S1, conveying the metal raw materials into the metal screening tank through the feed hopper; S2, start the servo motor to drive the rotating rod to rotate, drive the stirring rod to stir the material in the built-in filter cylinder, and at the same time, the push plate pushes the metal particles that meet the filter slot hole size through the filter screen plate, and the larger particles are retained above the screen plate; S3, start the micro motor to drive the screw rod to rotate in the discharge pipe, and discharge the retained larger particles through the outlet pipe; S4, the suction pump feeding mechanism feeds the screened metal particles into the heating furnace body through the feeding port through the conveying pipeline, and maintains the heating environment through the outer ring plate and the insulation pad; S5, the cooling circulation pipe adjusts the flow of the coolant through the connecting valve to perform heat exchange on the sublimation furnace body; S6, the telescopic hydraulic cylinder drives the rotating sleeve to drive the furnace cover to rotate around the hinge bolt, and the temperature sensor monitors the temperature in the furnace in real time; S7. Adjust the motor to drive the threaded rod to adjust the height of the supporting chassis so that the roller is off the ground to complete the positioning.

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