Electron beam cold bed furnace for recycling titanium alloy

Abstract

The invention discloses an electron beam cold bed furnace for titanium alloy recovery, and relates to the technical field of electron beam cold bed furnaces, the electron beam cold bed furnace comprises a shell and a cold bed, the cold bed used for containing a solution is arranged in the shell, the electron beam cold bed furnace further comprises a swing unit, the swing unit comprises an auxiliary plate, and the auxiliary plate is arranged at the position, located at the top of the cold bed, in the shell. A plurality of through grooves are uniformly formed in the auxiliary plate, a mounting plate capable of swinging in a reciprocating manner is rotationally mounted in each through groove, an electron beam gun is arranged on each mounting plate, and the electron beam guns are driven by the mounting plates to swing so as to realize uniform melting treatment on titanium alloy in the cooling bed; titanium alloy is contained through the cooling bed, the titanium alloy is melted through the electron beam gun, the electron beam gun is driven by the mounting plate which swings in a reciprocating mode to swing, the irradiation area in the cooling bed can be increased through the electron beam gun, and therefore a melted titanium alloy solution in the cooling bed is heated more evenly.

Description

Technical Field

[0001] This invention relates to the field of electron beam cold hearth furnace technology, specifically to an electron beam cold hearth furnace for titanium alloy recycling. Background Technology

[0002] As is generally known, titanium alloy recycling refers to the process of collecting, sorting, processing, and reusing waste or used titanium alloy materials. Titanium alloys are widely used in aerospace, medical devices, and chemical equipment due to their excellent properties (such as high strength, corrosion resistance, and high temperature resistance). Recycling titanium alloys can not only reduce production costs but also reduce resource waste and environmental pollution.

[0003] The main sources of titanium alloy recycling include scrap aerospace parts, medical devices, chemical equipment, and automotive parts. The recycling process typically includes the following steps: 1. Collection and sorting: First, the waste titanium alloy materials need to be sorted, distinguishing between different grades (such as TC4, TA2, etc.) and forms (such as plates, pipes, bars, etc.). The accuracy of sorting directly affects the efficiency of subsequent processing and the quality of recycled materials; 2. Pre-treatment: The sorted titanium alloys are cleaned to remove surface coatings or contaminants. This step typically involves chemical cleaning or mechanical polishing to ensure the purity of the material; 3. Melting and purification: The pretreated titanium alloy is melted, usually using electron beam melting technology to reduce impurities and gas content. Electron beam melting technology uses an electron beam cold hearth furnace to melt the titanium alloy. The electron beam cold hearth furnace uses an electron beam generation system to generate a high-energy-density electron beam to bombard the metal material, realizing processes such as melting, purification, and impurity removal. The melted titanium alloy can be further refined (such as electrolytic refining) to improve its purity and make it meet the standards for reuse; 4. Processing and reuse: The purified titanium alloy can be processed into new products according to needs, thereby realizing the recycling of titanium alloy.

[0004] For example, the patent entitled "A Method for Melting TA10 Titanium Alloy Using an Electron Beam Cold Hearth Furnace" published on March 16, 2021, with announcement number CN108384966B, discloses a method for melting TA10 titanium alloy using an electron beam cold hearth furnace, belonging to the field of titanium alloys. The method includes the following steps: 1) mixing and pressing materials containing titanium, nickel, and molybdenum into blocks, followed by drying; 2) melting the dried blocks using an electron beam cold hearth furnace to obtain TA10 titanium alloy. The electron beam cold hearth furnace melting includes a starting stage, an ingot casting stage, and a stabilization melting stage. The electron beam cold hearth furnace includes sequentially adjacent melting zones, refining zones, and crystallization zones. The power of the melting zone in the stabilization melting stage is 800–1100 kW, the power of the refining zone is 150–180 kW, and the power of the crystallization zone is 180–210 kW. The TA10 titanium alloy prepared by this method has good elemental uniformity and good surface quality.

[0005] The shortcoming of the existing technology is that when melting titanium alloys in an electron beam cold hearth furnace, the titanium alloy (or sponge titanium) needs to be added to the cold hearth, and then the titanium alloy in the cold hearth is heated and melted by an electron beam gun. However, the existing electron beam guns are fixedly installed in the shell, and the shell is in a vacuum state, so that the electron beam gun can melt the titanium alloy in the cold hearth. However, the fixed installation of the electron beam gun makes the temperature in the cold hearth uneven, thereby reducing the efficiency of titanium alloy melting. Summary of the Invention

[0006] The purpose of this invention is to provide an electron beam cold hearth furnace for titanium alloy recycling, thereby solving the technical problems in related technologies.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an electron beam cold bed furnace for titanium alloy recycling, comprising a shell and a cold bed, wherein the shell contains a cold bed for holding a solution, and further comprises a swinging unit, wherein the swinging unit includes an auxiliary plate, the auxiliary plate being disposed at the top of the cold bed within the shell, the auxiliary plate having multiple slots evenly distributed therein, each slot containing a mounting plate capable of reciprocating swinging, and each mounting plate containing an electron beam gun, wherein the electron beam gun is driven to swing by the mounting plates to achieve uniform melting of the titanium alloy within the cold bed.

[0008] The aforementioned swing unit further includes a rectangular frame. Each of the slots on the auxiliary plate is rotatably mounted with a rectangular frame via a positioning shaft. Each of the rectangular frames is rotatably mounted with a mounting plate via a limiting shaft. Each of the mounting plates is equipped with an electron beam gun. The positioning shaft and the limiting shaft in the slot are perpendicular to each other.

[0009] As described above, an inverted U-shaped plate is installed on the side of each slot on the auxiliary plate, a driven shaft is rotatably installed at the top of each U-shaped plate, a bent plate is installed at the bottom of each driven shaft, and each bent plate is connected to its corresponding mounting plate.

[0010] As mentioned above, each of the driven shafts has a driven gear installed on the portion located between the bent plate and the U-shaped plate.

[0011] As described above, each of the U-shaped plates has a slidingly mounted drive rack, and each drive rack is meshed with its corresponding driven gear. The drive racks are connected to each other by a connecting plate.

[0012] As described above, two feeding channels are symmetrically arranged inside the housing, and the ends of the two feeding channels are respectively connected to the side of the cooling bed.

[0013] As described above, each of the two feeding channels is equipped with a loading box at the top, and each loading box is equipped with a conveying plate at the bottom. Each conveying plate is slidably installed in its corresponding feeding channel, and each conveying plate is configured to slide and seal against the loading box and the feeding channel.

[0014] As described above, a long strip plate is slidably and sealed on each side of the housing, and the two long strip plates are respectively connected to their corresponding conveying plates. The outer wall of the housing and its corresponding long strip plate are each connected by a driving component.

[0015] As described above, a push plate is installed on the connecting plate, and the push plate and the conveying plate on the same side thereon are adapted to each other.

[0016] As described above, each of the aforementioned active racks and the loading box is connected by a first elastic element.

[0017] The beneficial effects of this invention are as follows: titanium alloy (or sponge titanium) is placed in a cooling bed, and then a vacuum is applied to the inside of the shell. The titanium alloy in the cooling bed is then melted by an electron beam gun. Simultaneously, the electron beam gun is driven to oscillate by a reciprocating mounting plate, which increases the irradiation area of ​​the electron beam gun in the cooling bed. This results in a more uniform heating of the molten titanium alloy solution in the cooling bed, thereby improving the melting quality and efficiency of the titanium alloy. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a partial three-dimensional structural diagram of the present invention; Figure 2 For the present invention Figure 1 A cross-sectional structural diagram along the feeding channel and the conveying direction of the conveyor plate; Figure 3 For the present invention Figure 2 A partial enlarged cross-sectional structural diagram at point M; Figure 4 This is a cross-sectional structural diagram of the sealing plate of the present invention when it is in the open state; Figure 5 For the present invention Figure 1 A schematic diagram of the cross-sectional structure along the uniformly arranged direction of the slots; Figure 6 For the present invention Figure 5 A schematic diagram of a partially enlarged cross-sectional structure at point N; Figure 7 For the present invention Figure 5 A schematic diagram of a partially enlarged cross-sectional structure at point P; Figure 8 For the present invention Figure 5 A partial enlarged cross-sectional structural diagram at point Q; Figure 9 A partial cross-sectional structural schematic diagram of another embodiment of the present invention is provided; Figure 10 This is a partial three-dimensional structural diagram of the interior of the housing of the present invention from a first perspective; Figure 11 This is a partial three-dimensional structural diagram of the interior of the housing of the present invention from a second perspective; Figure 12 A partial cross-sectional structural diagram of the impurity removal roller and the wedge plate just coming into contact in another embodiment of the present invention; Figure 13 This is a partial cross-sectional structural diagram of the discharge roller located on the overlapping plate in another embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Shell; 2. Cooling bed; 3. Auxiliary plate; 4. Through slot; 5. Mounting plate; 6. Electron beam gun; 7. Observation window; 8. Positioning shaft; 9. Rectangular frame; 10. Limiting shaft; 11. U-shaped plate; 12. Driven shaft; 13. Bend plate; 14. Driven gear; 15. Drive rack; 16. Connecting plate; 17. Feeding channel; 18. Loading box; 19. Conveying plate; 20. Long strip plate; 21. Driving component; 22. Propulsion plate; 23. First elastic element; 4. Sealing plate; 25. Water-cooled copper crucible; 26. Partition plate; 27. Positioning frame; 28. Slide rail; 29. ​​U-shaped frame; 30. Impurity removal roller; 31. Drive screw; 32. Driving component; 33. Liquid outlet tank; 34. Liquid outlet plate; 35. Second elastic component; 36. Passive plate; 37. Inclined surface; 38. Collection box; 39. Liquid drain tank; 40. Liquid drain plate; 41. Third elastic component; 42. Wedge plate; 43. Overlap plate; 44. Cleaning brush; 45. Scraper. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the following will be described in conjunction with the appendix. Figure 1 To be continued Figure 13 The present invention will now be described in further detail.

[0022] In the various embodiments of the present invention, for the sake of convenience of description and understanding and not for the purpose of limitation of claims, the various components of the present invention are capable of operating normally in a vacuum and at high temperatures.

[0023] One embodiment of the present invention relates to an electron beam cold hearth furnace for titanium alloy recycling, comprising a shell 1 and a cold hearth 2. The cold hearth 2 for holding a solution is disposed inside the shell 1, and a swinging unit is also provided. The swinging unit includes an auxiliary plate 3. The auxiliary plate 3 is disposed at the top of the cold hearth 2 inside the shell 1. The auxiliary plate 3 is evenly provided with a plurality of through slots 4. Each through slot 4 is rotatably mounted with a mounting plate 5 capable of reciprocating swinging. Each mounting plate 5 is provided with an electron beam gun 6. The electron beam gun 6 is driven by the mounting plates 5 to swing, thereby achieving uniform melting treatment of the titanium alloy in the cold hearth 2.

[0024] Specifically, the electron beam cooling hearth furnace 2 uses an electron beam generation system to generate a high-energy-density electron beam to bombard metallic materials, achieving processes such as melting, purification, and impurity removal. The core of the electron beam cooling hearth furnace 2 is the electron beam gun 6, which is a device for generating, accelerating, and focusing a high-energy-density electron beam. The electron beam gun 6 is used to heat and melt titanium alloys (or sponge titanium). The shell 1 is a cover for installing various components. The shell 1 is equipped with an observation window 7 and a sealing door (not shown in the figure). Closing the sealing door allows the interior of the shell 1 to be completely sealed. The shell 1 contains a cooling bed 2, which is a container for holding titanium alloy and has a cooling effect. An auxiliary plate 3 is also located inside the shell 1. Multiple slots 4 are evenly distributed on the auxiliary plate 3. A rectangular frame 9 is rotatably mounted in each slot 4 via a positioning shaft 8. An mounting plate 5 is rotatably mounted in each rectangular frame 9 via a limiting shaft 10. An electron beam gun 6 is mounted on each mounting plate 5. The positioning shafts 8 and limiting shafts 10 within the slots 4 are perpendicular to each other. An inverted U-shaped [structure / device] is mounted on the side of each slot 4 on the auxiliary plate 3. Each of the U-shaped plates 11 has a driven shaft 12 rotatably mounted on its top, and a bent plate 13 mounted on the bottom end of each driven shaft 12. Each bent plate 13 is connected to its corresponding mounting plate 5. A driven gear 14 is mounted on the portion of each driven shaft 12 located between the bent plate 13 and the U-shaped plate 11. A driving rack 15 is slidably mounted inside each U-shaped plate 11, and each driving rack 15 meshes with its corresponding driven gear 14. The driving racks 15 are connected to each other via a connecting plate 16. Next, when the titanium alloy needs to be melted, the titanium alloy is transported into the cooling bed 2, and then the sealing door on the shell 1 is closed to make the shell 1 sealed. Then, the shell 1 is evacuated. When evacuating the shell 1, a vacuum system set outside the shell 1 is used. The vacuum system consists of a mechanical pump, a Roots pump and a diffusion pump. The vacuum degree of the melting chamber is generally maintained at 10-1~10-2 Pa, and the vacuum degree of the gun chamber is generally 10-2~10-4 Pa. The vacuum system evacuates the inside of the shell 1, which is common knowledge in the field and will not be elaborated here.The electron beam gun 6 can only function normally under vacuum conditions, driving the connecting plate 16 to perform linear reciprocating motion. This reciprocating motion of the connecting plate 16 is transmitted linearly via a ball screw nut, which is common knowledge in the field and will not be elaborated upon. The connecting plate 16 drives the driving rack 15 to perform linear reciprocating motion. Because the driving rack 15 and the driven gear 14 mesh with each other, the driving rack 15 can drive the driven gear 14 to reciprocate. The driven gear 14 drives the driven shaft 12 and the bent plate 13 to rotate, causing the bent plate 13 to drive the mounting plate 5 to reciprocate. Since the mounting plate 5 is rotatably mounted within the rectangular frame 9 via the limiting shaft 10, and the rectangular frame 9 is rotatably mounted within the rectangular frame 9 via the positioning shaft 8... The mounting plate 5 is rotatably installed within the slot 4. During the reciprocating rotation of the mounting plate 5, the mounting plate 5 can adapt to the rotation of the bent plate 13 within the rectangular frame 9, centered on the limiting shaft 10. Furthermore, the rectangular frame 9 can also adapt to the rotation of the bent plate 13 within the slot 4, centered on the positioning shaft 8. This allows the mounting plate 5 to drive the electron beam gun 6 to reciprocate and rotate, enabling the electron beam gun 6 to comprehensively irradiate, heat, and melt the titanium alloy within the cooling bed 2. This increases the irradiation area within the cooling bed 2, resulting in more uniform heating of the molten titanium alloy solution within the cooling bed 2, thereby improving the melting quality and efficiency of the titanium alloy.

[0025] The shortcoming of the existing technology is that when melting titanium alloy in the electron beam cold hearth furnace 2, titanium alloy (or sponge titanium) needs to be added into the cold hearth 2, and then the titanium alloy in the cold hearth 2 is heated and melted by the electron beam gun 6. However, the existing electron beam gun 6 is fixedly installed in the shell 1, and the shell 1 is in a vacuum state, so that the electron beam gun 6 can melt the titanium alloy in the cold hearth 2. However, the fixed installation of the electron beam gun 6 makes the temperature in the cold hearth 2 uneven, thereby reducing the efficiency of titanium alloy melting.

[0026] The beneficial effects of this embodiment are as follows: the titanium alloy (or sponge titanium) is placed in the cooling bed 2, and then the shell 1 is evacuated. The titanium alloy in the cooling bed 2 is melted by the electron beam gun 6. Simultaneously, the electron beam gun 6 is driven to swing by the reciprocating mounting plate 5, which increases the irradiation area of ​​the electron beam gun 6 in the cooling bed 2. This makes the molten titanium alloy solution in the cooling bed 2 heat up more uniformly, thereby improving the melting quality and efficiency of the titanium alloy.

[0027] In another embodiment of the present invention, two feeding channels 17 are symmetrically arranged inside the housing 1, and the ends of the two feeding channels 17 are respectively connected to the sides of the cooling bed 2; a loading box 18 is installed at the top of each of the two feeding channels 17, and a conveying plate 19 is installed at the bottom of each loading box 18. Each conveying plate 19 is slidably installed in its corresponding feeding channel 17, and each conveying plate 19 is slidably and sealingly arranged between the loading box 18 and the feeding channel 17; a long strip plate 20 is slidably and sealingly installed on each side of the housing 1. The elongated plates 20 are connected to their corresponding conveyor plates 19. The outer wall of the housing 1 and its corresponding elongated plates 20 are each connected by a driving member 21. A pusher plate 22 is installed on the connecting plate 16. The pusher plate 22 and the conveyor plate 19 on the same side are adapted to each other. Each of the active racks 15 and the loading box 18 are connected by a first elastic member 23. A sealing plate 24 is rotatably installed at the bottom of each of the two loading boxes 18. The two sealing plates 24 are adapted to each other with their corresponding conveyor plates 19.

[0028] Specifically, in this embodiment, the loading box 18 is placed inside the housing 1. Only a vacuum treatment is needed inside the housing 1; there is no need to install a feeding vacuum system to vacuum the feeding device. The auxiliary plate 3 and the cooling bed 2 are located between the two loading boxes 18. When titanium alloy needs to be transported into the cooling bed 2, the drive component 21 (a device with a linear reciprocating output, preferably a cylinder) is activated, causing it to move the long strip plate 20 away from the cooling bed 2. The long strip plate 20 then moves the conveying plate 19 away from the cooling bed 2 until both conveying plates 19 have moved to a position where they are disengaged from the sealing plate 24 (e.g., ...). Figure 4As shown), the sealing plate 24 loses the pushing and clamping force of the conveying plate 19, and rotates at the bottom of the loading box 18, causing the end of the sealing plate 24 to press against the feeding channel 17. This puts the sealing plate 24 in an inclined state between the loading box 18 and the feeding channel 17. The sealing plate 24 opens the loading box 18, allowing the titanium alloy inside the loading box 18 to slide from the sealing plate 24 onto the feeding channel 17. The inclined sealing plate 24 can guide the titanium alloy to a certain extent, allowing it to slide along the sealing plate 24 to a further position on the feeding channel 17. The sealing plate 24 can not only open or close the loading box 18, but also guide the titanium alloy from the loading box 18 onto the feeding channel 17. This process allows the titanium alloy to slide more easily from the loading box 18 onto the feeding channel 17. Once the titanium alloy on the feeding channel 17 has accumulated to a certain height, the drive unit 21 is activated to move the long strip 20 towards the end closer to the cooling bed 2. The long strip 20 then moves the conveyor plate 19 towards the end closer to the cooling bed 2 until both conveyor plates 19 reach the edge of the cooling bed 2. During this movement, the conveyor plate 19 first comes into contact with the sealing plate 24, pushing the sealing plate 24 to rotate at the bottom of the loading box 18. Once the conveyor plate 19 reaches the bottom of the loading box 18, it pushes the sealing plate 24 to seal the bottom of the loading box 18. This process continues until both conveyor plates 19 move the titanium alloy along the... The material is conveyed into the cooling bed 2 via the feeding channel 17. Due to the large volume of the titanium alloy or sponge titanium, when the two conveyor plates 19 move to the top position of the cooling bed 2, they can perform a certain compression operation on the sponge titanium or titanium alloy, reducing its volume so that it can slide completely into the cooling bed 2 without falling off the side. Simultaneously, as the conveyor plates 19 move towards the end of the cooling bed 2, when the end of the conveyor plate 19 moves to the side of the loading box 18, the conveyor plate 19 and the pusher plate 22 abut against each other, causing the conveyor plate 19 to drive the pusher plate 22 towards the end of the cooling bed 2. The pusher plate 22 drives the connecting plate 16 towards the end of the cooling bed 2, and the connecting plate 16 drives the drive rack. The drive rack 15 moves towards the end closer to the cooling bed 2, causing the drive rack 15 to drive the driven gear 14 to rotate. The driven gear 14, through the bent plate 13, drives the mounting plate 5 and the electron beam gun 6 to swing and rotate, allowing the electron beam gun 6 to comprehensively irradiate, heat up, and melt the titanium alloy in the cooling bed 2. This increases the irradiation area of ​​the electron beam gun 6 within the cooling bed 2. Simultaneously, the drive rack 15 compresses the first elastic element 23 (the first elastic element 23 is a retractable and restorable element, preferably a spring), putting the first elastic element 23 into a compressed state. After the titanium alloy enters the cooling bed 2, the drive unit 21 is activated, causing it to move the long strip plate 20 away from the cooling bed 2. The long strip plate 20 then drives the conveyor plate 19 away from the cooling bed 2.Until both conveyor plates 19 move to the position where they are separated from the sealing plate 24, synchronously, under the rebound action of the first elastic element 23, the first elastic element 23 pushes the active rack 15 to move away from the cooling bed 2. The active rack 15 drives the connecting plate 16 and the push plate 22 to press against the side wall of the loading box 18. Repeat the above operation to intermittently add titanium alloy to the cooling bed 2, thereby realizing the melting treatment of titanium alloy. The conveyor plate 19 in this embodiment has multiple functions: (1) The conveyor plate 19 performs conveying operations on titanium alloy; (2) The conveyor plate 19 provides power to the sealing plate 24 at the bottom of the loading box 18, enabling the sealing plate 24 to open and close; (3) The two conveyor plates 19 move synchronously towards one end of the cooling bed 2, and the two conveyor plates 19 can perform extrusion operations on the titanium alloy, thereby reducing the volume of the titanium alloy (or sponge titanium), so that the titanium alloy can completely enter the cooling bed 2 and will not fall off the side of the cooling bed 2; (4) The conveyor plate 19 can provide power to the push plate 22, so that the push plate 22 can provide power to the active rack 15 through the connecting plate 16.

[0029] In another embodiment of the present invention, a liquid outlet is provided on one side of the cooling bed 2, and a water-cooled copper crucible 25 is connected to the liquid outlet side of the cooling bed 2. A partition 26 is provided inside the cooling bed 2 near the liquid outlet side, and a positioning frame 27 is provided at the end of the cooling bed 2 away from the partition 26. A slide rail 28 is installed between the positioning frame 27 and the partition 26, and a U-shaped frame 29 is slidably installed on the slide rail 28. A row of miscellaneous rollers 30 is rotatably installed inside the U-shaped frame 29, and the bottom surface of the miscellaneous rollers 30 is located inside the cooling bed 2. A transmission screw 31 is rotatably installed between the positioning frame 27 and the partition 26, and the transmission screw 31 is threadedly connected to the U-shaped frame 29. An active member 32 is installed outside the housing 1, and the end of the transmission screw 31 passes through the mounting frame and the housing 1 and is connected to the output end of the active member 32.

[0030] Specifically, when the electron beam gun 6 melts the titanium alloy in the cooling bed 2, after heating the titanium alloy to a high temperature, most of the impurity elements are reduced to easily volatile gases. High-density impurities have a significant density difference from the molten titanium (i.e., the molten titanium solution) and will sink to the bottom of the cooling bed 2 to be captured by the solidification shell. This is common knowledge in the field. However, a small portion of impurities still melts and floats to the surface of the molten titanium solution. That is, the density of a small portion of impurities after melting is lower than the density of the molten titanium solution, causing a small portion of impurities to float. The U-shaped frame 29 is initially located on the side closest to the partition 26. After the titanium alloy has melted in the cooling bed 2, the U-shaped frame 29 is activated. The driving element 32 (the driving element 32 is a device that can rotate in both directions at the output end, preferably a motor) drives the transmission screw 31 to rotate. Since the transmission screw 31 and the U-shaped frame 29 are connected by threads, the transmission screw 31 can drive the U-shaped frame 29 to move along the track of the slide rail 28 to the end away from the partition 26. The U-shaped frame 29 drives the impurity removal roller 30 to move to the end away from the partition 26, so that the impurity removal roller 30 can push the impurities floating on the top surface of the titanium melt from the end near the baffle to the end away from the baffle. The impurity removal roller 30 can push the impurities to the side away from the baffle for collection and processing, thereby realizing the discharge of impurities in the titanium melt.

[0031] In another embodiment of the present invention, a liquid outlet groove 33 is provided in the middle of the bottom side of the partition plate 26. A liquid outlet plate 34 is slidably and sealedly installed in the liquid outlet groove 33. The top of the liquid outlet plate 34 and the liquid outlet groove 33 are connected by a plurality of uniformly arranged second elastic elements 35. A passive plate 36 is installed on the top of the liquid outlet plate 34. The bottom side of the passive plate 36 is an inclined surface 37. The inclined surface 37 of the passive plate 36 and the impurity removal roller 30 are mutually cooperated. A collection box 38 is connected to the end of the cooling bed 2 away from the liquid outlet. A liquid drain groove 39 is provided at the connection position between the cooling bed 2 and the collection box 38. A liquid drain plate 40 is slidably and sealedly installed in the liquid drain groove 39. The liquid drain plate 40 and the inner wall of the cooling bed 2 are connected by a plurality of uniformly arranged third elastic elements 41. A wedge plate 42 is installed on the top of the liquid drain plate 40. The wedge plate 42 and the impurity removal roller 30 are mutually cooperated.

[0032] Specifically, when the discharge roller 30 is located near the partition 26 and is not moving, under the elastic force of the second elastic element 35 (which is a retractable and repositionable element, preferably a spring), the second elastic element 35 provides elastic force to the discharge plate 34, causing the discharge plate 34 to seal the discharge trough 33, preventing the titanium melt from being discharged from the cooling bed 2. Under the elastic force of the third elastic element 41 (which is a retractable and repositionable element, preferably a spring), the third elastic element 41 provides elastic force to the discharge plate 40, causing the discharge plate 40 to seal the discharge trough 39, preventing the titanium melt from being discharged from the cooling bed 2. After the titanium alloy has melted in the cooling bed 2, the active element 32 is activated to drive the transmission... The moving screw 31 rotates, and the transmission screw 31 drives the U-shaped frame 29 to move along the track of the slide rail 28 towards the end away from the partition 26. The U-shaped frame 29 drives the impurity removal roller 30 to move towards the end away from the partition 26, so that the impurity removal roller 30 can push the impurities floating on the top surface of the titanium melt from the end near the baffle to the end away from the baffle. This allows the impurity removal roller 30 to push the impurities to the side away from the baffle for collection and processing. When the impurity removal roller 30 and the wedge plate 42 are pressed together, the impurity removal roller 30 performs a squeezing operation on the wedge plate 42, causing the wedge plate 42 to drive the drain plate 40 to slide into the cooling bed 2. Simultaneously, the drain plate 40 performs a squeezing operation on the third elastic element 41, so that the third elastic element 41 is in a compressed state, until the impurity removal roller 30 moves to the wedge plate 42. At the top, the wedge plate 42 drives the drain plate 40 to open the drain trough 39, allowing impurities pushed to one side of the collection box 38 by the impurity discharge roller 30 to be discharged from the top opening of the drain trough 39 into the collection box 38. This allows the collection box 38 to collect impurities floating in the titanium melt. After the impurities in the titanium melt of the cooling bed 2 are discharged into the collection box 38, the active component 32 is activated to drive the transmission screw 31 to rotate. The transmission screw 31 drives the U-shaped frame 29 to move along the track of the slide rail 28 towards the end closer to the partition plate 26. The U-shaped frame 29 drives the impurity discharge roller 30 to move towards the end closer to the partition plate 26. After the impurity discharge roller 30 disengages from the wedge plate 42, under the rebound action of the third elastic component 41, the third elastic component 41 provides elastic force to the drain plate 40, making... The drain plate 40 seals the drain trough 39. After the impurity removal roller 30 and the inclined surface 37 on the bottom side of the passive plate 36 are pressed together, the impurity removal roller 30 pushes the passive plate 36 to slide towards the top end of the cooling bed 2 through the inclined surface 37. The passive plate 36 drives the outlet plate 34 to slide towards the top end of the cooling bed 2, so that the outlet plate 34 opens the outlet trough 33. Simultaneously, the outlet plate 34 squeezes the second elastic element 35, so that the second elastic element 35 is in a compressed state. Until the impurity removal roller 30 moves to the bottom of the passive plate 36, the outlet plate 34 fully opens the outlet trough 33, so that the titanium melt in the cooling bed 2 can be discharged from the outlet trough 33 and the outlet into the water-cooled copper crucible 25. Then, the titanium melt is subjected to ingot pulling processing by the water-cooled copper crucible 25 and the ingot pulling device.The casting device for titanium molten material casting is common knowledge in the field and will not be elaborated upon. After the titanium molten material in the cooling bed 2 is discharged into the water-cooled copper crucible 25, the active component 32 is activated to drive the transmission screw 31 to rotate. The transmission screw 31 drives the U-shaped frame 29 to move along the track of the slide rail 28 away from the partition plate 26 until the U-shaped frame 29 drives the impurity removal roller 30 to disengage from the passive plate 36. At this point, the active component 32 stops providing power to the transmission screw 31. Under the rebound action of the second elastic component 35, the second elastic component 35 provides elastic force to the liquid outlet plate 34, so that the liquid outlet plate 34 seals the liquid outlet tank 33. This process prevents the molten titanium from exiting the cooling bed 2. During the reciprocating motion of the impurity removal roller 30, not only are impurities collected and processed, but the drain plate 40 and drain trough 39 are first opened to discharge impurities from the molten titanium. Then, the drain plate 40 and drain trough 39 are closed, and the outlet plate 34 and outlet trough 33 are opened to discharge the molten titanium. This separation of impurities from the molten titanium is achieved, with the impurities flowing into the collection box 38 and the molten titanium flowing into the water-cooled copper crucible 25, thus completing the impurity removal process.

[0033] In another embodiment of the present invention, an overlapping plate 43 is installed on the side of the wedge plate 42 near the collection box 38. The overlapping plate 43 and the discharge roller 30 are adapted to each other. The overlapping plate 43 is evenly provided with a plurality of protrusions for increasing the friction between it and the discharge roller 30. A cleaning brush 44 is provided on the positioning frame 27. The cleaning brush 44 and the discharge roller 30 are adapted to each other. A scraper 45 is provided on the U-shaped frame 29. The top of the scraper 45 is provided with a groove. The scraper 45 and the cleaning brush 44 are adapted to each other.

[0034] Specifically, since the impurity removal roller 30 moves on the titanium melt on the cooling bed 2, solid impurities floating on the titanium melt may remain on the impurity removal roller 30. In this embodiment, after the titanium alloy is melted in the cooling bed 2, the active component 32 is activated to drive the transmission screw 31 to rotate. The transmission screw 31 drives the U-shaped frame 29 to move along the track of the slide rail 28 towards the end away from the partition plate 26. The U-shaped frame 29 drives the impurity removal roller 30 to move towards the end away from the partition plate 26, so that the impurity removal roller 30 can push the impurities floating on the top surface of the titanium melt from the end near the baffle to the end away from the baffle. This allows the impurity removal roller 30 to push the impurities to the side away from the baffle for collection and processing. When the impurity removal roller 30 and the wedge plate 42... After they come into contact with each other, the impurity discharge roller 30 squeezes the wedge plate 42, causing the wedge plate 42 to slide the drain plate 40 towards one end of the cooling bed 2. Simultaneously, the drain plate 40 squeezes the third elastic element 41, compressing it. When the impurity discharge roller 30 reaches the top of the wedge plate 42, the wedge plate 42 drives the drain plate 40 to open the drain trough 39, allowing impurities pushed by the impurity discharge roller 30 to the side of the collection box 38 to be discharged from the top opening of the drain trough 39 into the collection box 38. This allows the collection box 38 to collect impurities floating in the titanium melt. Simultaneously, the impurity discharge roller 30 continues to move from the top of the wedge plate 42 along the overlapping plate 43. The trajectory movement is influenced by the fact that the overlapping plate 43 is evenly provided with multiple protrusions to increase the friction between it and the impurity removal roller 30. This allows the impurity removal roller 30 to rotate under the pressure of the overlapping plate 43 and the protrusions, causing the impurity removal roller 30 and the cleaning brush 44 to roll and rub against each other. This allows the cleaning brush 44 to clean the solid impurities on the surface of the impurity removal roller 30. As the impurity removal roller 30 rotates, some impurities are scraped off by the scraper 45 and fall into the groove. During the rolling and rubbing process between the impurity removal roller 30 and the cleaning brush 44, the scraper 45 and the groove also press against the cleaning brush 44, allowing the cleaning brush 44 to clean the scraper 45 and the groove. After the cleaning brush 44 has finished cleaning the impurities on the scraper 45, groove and impurity removal roller 30, and after the impurities floating in the titanium melt are discharged, the active component 32 is activated to drive the transmission screw 31 to rotate. The transmission screw 31 drives the U-shaped frame 29 to move along the track of the slide rail 28 towards the end closer to the partition plate 26. The U-shaped frame 29 drives the impurity removal roller 30 to move towards the end closer to the partition plate 26. After the impurity removal roller 30 and the wedge plate 42 are separated, under the rebound action of the third elastic component 41, the third elastic component 41 provides elasticity to the drain plate 40, so that the drain plate 40 seals the drain tank 39, which facilitates the removal of impurities floating in the titanium melt in the next cooling bed 2.

[0035] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An electron beam cold hearth furnace for recycling of titanium alloys, comprising a housing and a cold hearth, the cold hearth being arranged inside the housing for containing a solution, characterized in that, Also include a swing unit, the swing unit includes an auxiliary plate, the shell inside the top of the cold bed is provided with an auxiliary plate, a plurality of through slots are uniformly arranged on the auxiliary plate, each of the through slots is rotatably installed with an installation plate capable of reciprocating swing, each of the installation plates is provided with an electron beam gun, and the electron beam gun is swung by the installation plate to uniformly melt the titanium alloy in the cold bed.

2. The electron beam cold hearth furnace for recycling of titanium alloys according to claim 1, characterized in that, The swing unit also includes a rectangular frame, each of the through slots on the auxiliary plate is rotatably installed with a rectangular frame through a positioning shaft, each of the rectangular frames is rotatably installed with an installation plate through a limiting shaft, each of the installation plates is installed with an electron beam gun, and the positioning shaft and the limiting shaft in the through slot are arranged perpendicular to each other.

3. The electron beam cold hearth furnace for recycling of titanium alloys according to claim 2, characterized in that, Each of the auxiliary plates is installed with an inverted U-shaped plate on the side of each through slot, each of the U-shaped plates is rotatably installed with a driven shaft at the top, each of the driven shafts is installed with a bent plate at the bottom, and each of the bent plates is connected with the corresponding installation plate.

4. The electron beam cold hearth furnace for recycling of titanium alloys according to claim 3, characterized in that, Each of the driven shafts is installed with a driven gear between the bent plate and the U-shaped plate.

5. The electron beam cold hearth furnace for recycling of titanium alloys according to claim 4, characterized in that, Each of the U-shaped plates is slidably installed with a driving rack, each of the driving racks is arranged in meshing with the corresponding driven gear, and each of the driving racks is connected by a connecting plate.

6. The electron beam cold hearth furnace for recycling of titanium alloys according to claim 5, characterized in that, The shell is symmetrically provided with two feeding channels, and the ends of the two feeding channels are respectively communicated with the sides of the cold bed.

7. The electron beam cold hearth furnace for recycling of titanium alloys according to claim 6, characterized in that, Each of the two feeding channels is installed with a charging box at the top, each of the charging boxes is installed with a conveying plate at the bottom, each of the conveying plates is slidably installed in the corresponding feeding channel, and each of the conveying plates is slidably sealed between the charging box and the feeding channel.

8. The electron beam cold hearth furnace for recycling of titanium alloys according to claim 7, characterized in that, Each side of the shell is slidably and sealingly installed with a long strip plate, the two long strip plates are connected with each other between the corresponding conveying plates, and the outer wall of the shell and the corresponding long strip plate are connected by a driving member.

9. The electron beam cold hearth furnace for recycling of titanium alloys according to claim 7, characterized in that, The connecting plate is installed with a pushing plate, and the pushing plate and the conveying plate on the same side are adaptively arranged.

10. The electron beam cold hearth furnace for recycling of titanium alloys according to claim 7, characterized in that, Each of the driving racks and the charging box is connected by a first elastic member.

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