Alloy vacuum smelting furnace and smelting method thereof

Abstract

The invention belongs to the technical field of vacuum melting furnaces, and discloses an alloy vacuum melting furnace which comprises a melting furnace body, a sliding lifting frame is installed in the melting furnace body, a rotating electric crucible is installed at the upper end of the lifting frame, a feeding opening is formed in the upper end of the melting furnace body, and a feeding sealing cover is installed at the upper end of the feeding opening. A flow guide disc is fixedly mounted on the side surface of the lower end of the lifting frame, a flow guide opening is formed in the side surface of the lower end of the flow guide disc, a drainage opening is formed in the outer side surface of the smelting furnace body, and a cooling mechanism is arranged on one side of the smelting furnace body. The vacuum degree loss and the cooling waiting time in the cooling and discharging process are reduced in a continuous closed transfer mode, so that the purpose of continuous and efficient smelting is achieved. According to the alloy vacuum melting furnace, in the process that the lifting motor drives the electric crucible to ascend, the mode that the angle gear is meshed with the angle toothed bar is utilized, and the electric crucible automatically turns over to pour molten alloy.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum melting furnaces, in particular to an alloy vacuum melting furnace and a melting method thereof. Background Art

[0002] With the continuous development of industrial technology, alloys are more and more widely used in various fields. In the production process of alloys, smelting is one of the key links. At present, alloy vacuum melting furnaces play an important role in alloy production. Traditional alloy vacuum melting furnaces are usually composed of a furnace body, a heating system, a vacuum system, etc. During the smelting process, the furnace is evacuated into a vacuum state through a vacuum system to prevent the alloy from being oxidized during the smelting process, thereby ensuring the quality of the alloy. However, there are some problems in the use of existing alloy vacuum melting furnaces. Since the alloy still needs to be kept in a vacuum state during melting and cooling, the vacuum furnace cannot be opened for subsequent feeding during cooling, which greatly reduces the continuous processing efficiency of the vacuum furnace. Some vacuum furnaces are equipped with cooling furnaces that can maintain vacuum, but during the unloading process, due to the need for unloading operations, the furnace door has to be opened frequently, which causes the vacuum state in the cooling furnace to be destroyed. After each opening of the furnace door, in order to continue the cooling operation, the cooling furnace needs to be repeatedly evacuated. This frequent vacuum operation not only increases energy consumption but also reduces production efficiency. Summary of the invention

[0003] The object of the present invention is to provide an alloy vacuum melting furnace and a melting method thereof, so as to solve the problem that the poor cooling method proposed in the above background technology leads to high energy consumption and low production efficiency.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: an alloy vacuum melting furnace, comprising a melting furnace body, a sliding lifting frame is installed inside the melting furnace body, and a rotating electric crucible is installed on the upper end of the lifting frame, a feeding port is opened at the upper end of the melting furnace body, and a feeding cover is installed at the upper end of the feeding port, a guide plate is fixedly installed on the lower end side surface of the lifting frame, and a guide port is opened on the lower end side surface of the guide plate, a drainage port is opened on the outer side surface of the melting furnace body, and a rotating lifting frame is installed inside the upper end side surface of the melting furnace body. A lifting motor is provided, and a lifting rod is fixedly connected to the lower end of the output shaft of the lifting motor, an angle gear is fixedly connected to the outer surface of the electric crucible, an angle gear rod is fixedly arranged on the inner top surface of the smelting furnace body, and a first pressure extraction port is fixedly arranged on the side surface of one end of the smelting furnace body, and a pressure extraction pipe is connected between the first pressure extraction port and the inner cavity of the smelting furnace body, a cooling mechanism is provided on one side of the smelting furnace body, which reduces the loss of vacuum degree and the waiting time for cooling in the cooling and discharging process by continuous closed transmission, so as to achieve the purpose of continuous and efficient smelting.

[0005] Preferably, the cooling mechanism comprises: a cooling furnace, the cooling furnace is fixedly arranged on one side of the smelting furnace body, and a second pressure extraction port is fixedly arranged on the lower surface of the cooling furnace, a switching motor is fixedly installed inside the lower end of the cooling furnace, and a center disk is fixedly arranged on the output shaft of the switching motor, an electric push rod is fixedly arranged on the lower surface of the center disk, and a function board is fixedly connected to the lower end of the electric push rod, an air storage box is fixedly arranged on the lower surface of the function board, and a micro air pump is fixedly installed on the lower surface of the function board, and one end of the micro air pump is connected to the air storage box, a sliding clamping rod is installed on the upper side surface of the function board, and a cooling cylinder is clamped and installed on the upper end of the function board, and a clamping groove is provided on the inner surface of the lower end of the cooling cylinder, A rotating switching barrel is installed inside the upper side surface of the furnace, and a cooling barrel is installed inside the switching barrel, a central gear is fixedly connected to the upper end of the rotating shaft of the switching barrel, and the central gear is located inside the cavity on the side surface of the smelting furnace body, and a rotating reversing gear is installed inside the cavity on the side surface of the smelting furnace body where the central gear is located, one end of the rotating shaft of the reversing gear is fixedly connected to a connecting gear, a sliding piston plate is installed inside the side surface of the smelting furnace body above the connecting gear, and a connecting gear is fixedly provided at the lower end of the piston plate, and a rotating gear plate is installed on the side surface of the connecting gear, a rotating material taking barrel is installed on the upper surface of the cooling furnace, and a sealing cover is installed on the upper end of the material taking barrel, and a rotating adjusting rod is installed on the upper surface of the cooling furnace.

[0006] By adopting the above technical solution, a lower vacuum loss can be achieved during the material feeding process, thereby improving processing efficiency and reducing energy consumption.

[0007] Preferably, the guide plate is L-shaped, and the lower end of the guide plate is a concave arc design, the drainage port is designed to be inclined downward toward the outside of the smelting furnace body, the guide port is arranged opposite the drainage port, and the guide port is in contact with the inner surface of the smelting furnace body, the lifting rod and the lifting frame are threadedly connected, the angle gear and the angle gear rod are meshingly connected, and the angle gear is located on the side of the angle gear rod away from the drainage port.

[0008] By adopting the above technical solution, the electric crucible can pour the alloy melt during the rising process.

[0009] Preferably, the function plate is fan-shaped and evenly distributed on the outside of the center disk. The upper end of the function plate is a hollow columnar design. The upper end of the card rod passes through the outer surface of the upper end of the function plate. A spring is connected between the card rod and the function plate. The card rod and the function plate are connected by sliding friction, and the upper end of the card rod is engaged with the card slot.

[0010] By adopting the above technical solution, the functional plate can be engaged with the cooling cylinder to drive the cooling cylinder to move up and down.

[0011] Preferably, the cooling cylinder inside one end of the switching barrel is arranged opposite to the drainage port, the central gear is meshed and connected with the reversing gear, and both the central gear and the reversing gear are designed as bevel gears.

[0012] By adopting the above technical solution, the connecting gear can drive the reversing gear to rotate synchronously when it rotates.

[0013] Preferably, the connecting gear and the reversing gear are concentrically designed, and the connecting gear is meshingly connected with the connecting gear rod via a toothed plate.

[0014] By adopting the above technical solution, the connecting gear rod can drive the connecting gear to rotate through the gear plate.

[0015] Preferably, the piston plate and the smelting furnace body are connected by sliding friction, and a spring is connected between the piston plate and the smelting furnace body.

[0016] By adopting the above technical solution, the piston plate can slide down and return to its original position under the pull of the spring when the negative pressure is lost.

[0017] Preferably, a spring is connected between the tooth plate and the connecting tooth rod, and a lower surface of one end of the tooth plate is in contact with an outer surface of the connecting tooth rod.

[0018] By adopting the above technical solution, the toothed plate will not drive the connecting gear to rotate when it slides down.

[0019] Preferably, the lower end surface of the material taking barrel is in contact with the upper surface of the functional plate directly below, and the material taking barrel is connected to the cooling furnace by sliding friction, and the material taking barrel is connected to the cooling barrel inside it by sliding friction, the upper end of the adjusting rod is rotatably connected to the smelting furnace body, the upper end side surface of the material taking barrel is fixedly provided with a plate-like protrusion, and the plate-like protrusion on the upper end side surface of the material taking barrel is threadedly connected to the adjusting rod.

[0020] By adopting the above technical solution, the material taking barrel can seal the cooling barrel and the internal cavity of the cooling furnace, and at the same time, the material taking barrel can be driven by the adjusting rod to move up and down and remain stable.

[0021] A smelting method of an alloy vacuum smelting furnace, the smelting method comprising the following steps: S1. Open the feeding cover and feed the raw materials into the electric crucible inside the smelting furnace through the feeding port; S2. After the interior of the melting furnace is evacuated through the connection of the first pressure relief port and the vacuum unit, the electric crucible is started to melt the alloy raw materials; S3. Start the lifting motor to drive the electric crucible to move upward, and the electric crucible rotates relative to the lifting frame to pour the molten alloy into the guide plate and out through the guide port and the drainage port; S4. The lifting motor drives the electric crucible to slide down and reset the drainage port to close, and the operator opens the feeding cover to add raw materials; S5. The melting furnace is re-sealed and vacuumed. Under the action of negative pressure, the piston plate drives the tooth plate upward through the connecting gear rod so that the switching barrel drives the cooling cylinder filled with alloy melt and the empty cooling cylinder to exchange positions; S6. The micro air pump is started to push the card rod to slide and engage with the card slot at the lower end of the cooling cylinder. At this time, the electric push rod drives the function board to move downward so that the cooling cylinder is pulled down and disconnected from the switching barrel; S7. The switching motor starts to drive the center disk and the function plate to rotate and switch positions, so that the empty cooling cylinder rotates to the bottom of the switching barrel, and the electric push rod starts to drive the function plate to move up so that the empty cooling cylinder moves up and inserts into one end of the switching barrel; S8. Turn the adjusting rod to move the material taking barrel downward, and the material taking barrel fits with the upper surface of the functional plate. Twist the sealing cover to take out the cooling barrel and insert a new cooling barrel, then cover the sealing cover to continue cooling.

[0022] Compared with the prior art, the invention has the following beneficial effects: the alloy vacuum melting furnace: 1. The electric crucible is automatically turned over to dump the molten alloy by the meshing of the angle gear and the angle gear rod during the process of the electric crucible being driven up by the lifting motor; Furthermore, by switching the barrels to transfer the alloy melt after smelting is completed, the next batch of alloy raw materials can be smelted quickly without waiting after the electric crucible melts the alloy and pours out the material, thereby achieving the purpose of improving the overall smelting efficiency; Furthermore, when the electric crucible is tilted and lowered, the drainage port is closed by the guide plate, so that the alloy melt temporarily stored in the switching barrel will not contact with the air, and the negative pressure in the subsequent vacuuming process pulls the piston plate to drive the switching barrel to rotate, so that the cooling cylinder filled with alloy melt and the empty cooling cylinder in the switching barrel can automatically switch positions to facilitate the collection of the next batch of alloy melt; Furthermore, after the function plate is raised, the internal part of the upper part of the function plate is pressurized, so that the function plate can lock the cooling cylinder containing the alloy melt, and the cooling cylinder is taken out downward when the function plate moves downward. The central disk drives the function plate to rotate and the function plate is lifted relative to the central disk to realize the switching of multiple cooling cylinders, so as to realize automatic unloading. Furthermore, by sliding the material taking barrel down and contacting the upper surface of the functional plate, the purpose of separating the internal cavity of the material taking barrel from the internal cavity of the cooling furnace is achieved, so that when the cooling barrel under the material taking barrel is taken out, the relative vacuum environment in the cooling furnace will not be destroyed, and there is no need to wait for the alloy melt in all the cooling barrels to cool down, thereby improving the material unloading efficiency and avoiding the frequent vacuum process of the cooling furnace, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the overall cutaway surface of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the cross-section surface of the connection between the smelting furnace body and the pumping and pressure pipe of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the angle gear and the angle gear rod of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the central gear and the reversing gear of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the connecting gear, connecting gear rod and gear plate of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the connecting section surface of the connecting gear, connecting gear rod and gear plate of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the functional board, the air storage box and the micro air pump connected in the present invention; Fig. 9 This is a schematic diagram of the three-dimensional structure of the switching motor, the center disk and the electric push rod connected in the present invention; Fig.10 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the functional plate, the clamping rod and the clamping slot of the present invention.

[0024] In the figure: 1. smelting furnace body; 2. lifting frame; 3. electric crucible; 4. feeding port; 5. feeding cover; 6. guide plate; 7. guide port; 8. drainage port; 9. lifting motor; 10. lifting rod; 11. angle gear; 12. angle gear rod; 13. first pressure-extraction port; 14. pressure-extraction pipe; 15. cooling furnace; 16. second pressure-extraction port; 17. switching motor; 18. center plate; 19. electric push rod; 20. function board; 21. gas storage box; 22. micro air pump; 23. clamping rod; 24. cooling cylinder; 25. clamping slot; 26. switching barrel; 27. center gear; 28. reversing gear; 29. ​​connecting gear; 30. piston plate; 31. connecting gear rod; 32. gear plate; 33. material taking cylinder; 34. sealing cover; 35. adjusting rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 10The present invention provides a technical solution: an alloy vacuum melting furnace.

[0027] Embodiment 1: This embodiment discloses a smelting furnace body 1, wherein a sliding lifting frame 2 is installed inside the smelting furnace body 1, and a rotating electric crucible 3 is installed on the upper end of the lifting frame 2, a feeding port 4 is provided on the upper end of the smelting furnace body 1, and a feeding cover 5 is installed on the upper end of the feeding port 4, a guide plate 6 is fixedly installed on the lower end side surface of the lifting frame 2, and a guide port 7 is provided on the lower end side surface of the guide plate 6, a drainage port 8 is provided on the outer surface of the smelting furnace body 1, a rotating lifting motor 9 is installed inside the upper end side surface of the smelting furnace body 1, and a lifting rod 10 is fixedly connected to the lower end of the output shaft of the lifting motor 9, an angle gear 11 is fixedly connected to the outer surface of the electric crucible 3, an angle gear rod 12 is fixedly provided on the inner top surface of the smelting furnace body 1, and a first pressure extraction port 13 is fixedly provided on one end side surface of the smelting furnace body 1, and a pressure extraction pipe 14 is connected between the first pressure extraction port 13 and the inner cavity of the smelting furnace body 1; The guide plate 6 is L-shaped, and the lower end of the guide plate 6 is an inwardly concave arc design. The drainage port 8 is designed to be inclined downward toward the outside of the smelting furnace body 1. The drainage port 7 is arranged opposite to the drainage port 8, and the drainage port 7 is in contact with the inner surface of the smelting furnace body 1. The lifting rod 10 is threadedly connected to the lifting frame 2, and the angle gear 11 is meshed with the angle gear rod 12, and the angle gear 11 is located on the side of the angle gear rod 12 away from the drainage port 8; During the normal smelting process, the feeding cover 5 is rotated to expose the feeding port 4, and the raw materials are fed into the electric crucible 3 inside the smelting furnace body 1 through the feeding port 4, and then the feeding cover 5 is installed to close the feeding port 4. At this time, the first pressure relief port 13 is connected to the vacuum unit and the pressure relief pipe 14 is used to evacuate the inside of the smelting furnace body 1. After the vacuuming is completed, the electric crucible 3 is started to smelt the alloy raw materials. After the smelting is completed, the lifting motor 9 is started. The lifting motor 9 is threadedly connected to the lifting frame 2 through the lifting rod 10 to drive the lifting frame 2 and the electric crucible 3 to move upward. At this time, the electric crucible 3 moves upward. During the process, the angle gear 11 and the angle gear rod 12 are engaged with each other and rotate relative to the lifting frame 2, and the molten alloy in the electric crucible 3 is poured into the guide plate 6. At this time, since the guide plate 6 moves up with the lifting frame 2, the guide port 7 is opposite to the drainage port 8, so that the molten alloy in the guide plate 6 flows out through the guide port 7 and the drainage port 8, and then the lifting motor 9 drives the electric crucible 3 to slide down and reset. At this time, the upper end of the guide plate 6 closes the drainage port 8, so that the operator can immediately open the feeding cover 5 to add raw materials without causing the molten raw materials to contact with the air, thereby improving the overall melting processing efficiency.

[0028] Embodiment 2: Based on Embodiment 1, this embodiment discloses that a cooling mechanism is provided on one side of the smelting furnace body 1, and the loss of vacuum degree and the waiting time for cooling are reduced during the cooling and discharging process by means of continuous closed transfer, so as to achieve the purpose of continuous and efficient smelting; The cooling mechanism includes: a cooling furnace 15, the cooling furnace 15 is fixedly arranged on one side of the smelting furnace body 1, and a second pressure extraction port 16 is fixedly arranged on the lower surface of the cooling furnace 15, a switching motor 17 is fixedly installed inside the lower end of the cooling furnace 15, and a center disk 18 is fixedly arranged on the output shaft of the switching motor 17, an electric push rod 19 is fixedly arranged on the lower surface of the center disk 18, and a function board 20 is fixedly connected to the lower end of the electric push rod 19, an air storage box 21 is fixedly arranged on the lower surface of the function board 20, and a micro air pump 22 is fixedly installed on the lower surface of the function board 20, and one end of the micro air pump 22 is connected to the air storage box 21, a sliding clamping rod 23 is installed on the upper end side surface of the function board 20, and a cooling cylinder 24 is clamped and installed on the upper end of the function board 20, and a clamping groove 25 is provided on the lower inner surface of the cooling cylinder 24, and the cooling furnace 15 is fixedly installed on the lower end side surface of the cooling furnace 15. A rotating switching barrel 26 is installed inside the upper end side surface, and a cooling barrel 24 is installed inside the switching barrel 26, a central gear 27 is fixedly connected to the upper end of the rotating shaft of the switching barrel 26, and the central gear 27 is located inside the cavity on the side surface of the smelting furnace body 1, and a rotating reversing gear 28 is installed inside the cavity on the side surface of the smelting furnace body 1 where the central gear 27 is located, and a connecting gear 29 is fixedly connected to one end of the rotating shaft of the reversing gear 28, a sliding piston plate 30 is installed inside the side surface of the smelting furnace body 1 above the connecting gear 29, and a connecting gear rod 31 is fixedly provided at the lower end of the piston plate 30, and a rotating gear plate 32 is installed on the side surface of the connecting gear rod 31, a rotating material taking barrel 33 is installed on the upper surface of the cooling furnace 15, and a sealing cover 34 is installed on the upper end of the material taking barrel 33, and a rotating adjusting rod 35 is installed on the upper surface of the cooling furnace 15; The function board 20 is fan-shaped and evenly distributed on the outside of the center plate 18. The upper end of the function board 20 is a hollow columnar design. The upper end of the clamping rod 23 penetrates the outer surface of the upper end of the function board 20. A spring is connected between the clamping rod 23 and the function board 20. The clamping rod 23 and the function board 20 are connected by sliding friction. The upper end of the clamping rod 23 is clamped and connected with the clamping groove 25. The cooling cylinder 24 inside one end of the switching barrel 26 is arranged opposite to the drainage port 8, and the central gear 27 is meshed and connected with the reversing gear 28, and both the central gear 27 and the reversing gear 28 are designed as bevel gears; The connecting gear 29 and the reversing gear 28 are designed to be concentric, and the connecting gear 29 is meshed and connected with the connecting gear rod 31 through a tooth plate 32; The piston plate 30 is connected to the smelting furnace body 1 by sliding friction, and a spring is connected between the piston plate 30 and the smelting furnace body 1; A spring is connected between the tooth plate 32 and the connecting tooth rod 31, and the lower surface of one end of the tooth plate 32 is in contact with the outer surface of the connecting tooth rod 31; The lower end surface of the material taking barrel 33 is in contact with the upper surface of the functional plate 20 directly below, and the material taking barrel 33 is connected to the cooling furnace 15 by sliding friction, and the material taking barrel 33 is connected to the cooling barrel 24 inside it by sliding friction; The upper end of the adjusting rod 35 is rotatably connected to the smelting furnace body 1, and a plate-shaped protrusion is fixedly provided on the upper end side surface of the material taking barrel 33, and the plate-shaped protrusion on the upper end side surface of the material taking barrel 33 is threadedly connected to the adjusting rod 35; The alloy melt flowing out through the drainage port 8 flows into the cooling cylinder 24 inside one end of the switching barrel 26 through the drainage port 8. At this time, when the smelting furnace body 1 is re-closed for vacuuming, as the pressure in the vacuuming pipe 14 decreases, the piston plate 30 slides up under the action of negative pressure and drives the toothed plate 32 to move up through the connecting gear rod 31. The toothed plate 32 drives the connecting gear 29 to rotate through the meshing with the connecting gear 29. The connecting gear 29 drives the switching barrel 26 to rotate through the meshing with the reversing gear 28 and the central gear 27, so that the switching barrel 26 drives the cooling cylinder 24 filled with the alloy melt and the empty cooling cylinder 24 to exchange positions to ensure the subsequent acceptance of the alloy raw materials. When the cooling cylinder 24 filled with alloy melt rotates to the top of the functional plate 20, the micro air pump 22 under the functional plate 20 starts to fill the air in the air storage box 21 into the cavity inside the upper end of the functional plate 20. The cavity pressure inside the upper end of the functional plate 20 increases, pushing the clamping rod 23 to slide and engage with the clamping groove 25 at the lower end of the cooling cylinder 24. At this time, the electric push rod 19 drives the functional plate 20 to move downward so that the cooling cylinder 24 is pulled down and disconnected from the switching barrel 26. Then the switching motor 17 starts to drive the center disk 18 to rotate. The center disk 18 drives the functional plate 20 to rotate and switch positions, so that the functional plate 20 with the empty cooling cylinder 24 rotates to the bottom of the switching barrel 26. Then the electric push rod 19 starts to drive the functional plate 20 to move upward so that the empty cooling cylinder 24 moves upward and is inserted into one end of the switching barrel 26. When the alloy melt needs to be taken out of the cooling cylinder 24 that has completely cooled the alloy melt, the adjusting rod 35 is rotated to drive the material taking cylinder 33 to move downward until the material taking cylinder 33 is sleeved on the outer surface of the cooling cylinder 24 below and fits with the upper surface of the functional plate 20 through the lower end surface. At this time, the sealing cover 34 is twisted to take out the cooling cylinder 24 on the inner side of the material taking cylinder 33 and insert a new cooling cylinder 24. The sealing cover 34 is then covered and the adjusting rod 35 is rotated to make the adjusting rod 35 slide up and out of the rotation range of the cooling cylinder 24. During the process, the vacuum degree in the cooling furnace 15 is ensured by briefly and continuously evacuating the second pressure relief port 16. In this way, the loss of vacuum degree and energy consumption during the unloading process are reduced.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An alloy vacuum melting furnace, comprising a melting furnace body (1), a sliding lifting frame (2) is installed inside the melting furnace body (1), and a rotating electric crucible (3) is installed on the upper end of the lifting frame (2), a feeding port (4) is opened on the upper end of the melting furnace body (1), and a feeding cover (5) is installed on the upper end of the feeding port (4), characterized in that: A guide plate (6) is fixedly mounted on the lower side surface of the lifting frame (2), and a guide port (7) is provided on the lower side surface of the guide plate (6); a guide port (8) is provided on the outer side surface of the smelting furnace body (1); a rotating lifting motor (9) is mounted inside the upper side surface of the smelting furnace body (1), and a lifting rod (10) is fixedly connected to the lower end of the output shaft of the lifting motor (9); an angle gear (11) is fixedly connected to the outer side surface of the electric crucible (3); an angle gear rod (12) is fixedly arranged on the inner top surface of the smelting furnace body (1); a first pressure extraction port (13) is fixedly arranged on one side surface of the smelting furnace body (1), and a pressure extraction pipe (14) is connected between the first pressure extraction port (13) and the inner cavity of the smelting furnace body (1); a cooling mechanism is provided on one side of the smelting furnace body (1), and the loss of vacuum degree and the waiting time for cooling are reduced in the cooling and discharging process by a continuous closed transmission method, so as to achieve the purpose of continuous and efficient smelting.

2. The alloy vacuum melting furnace according to claim 1, characterized in that: The cooling mechanism comprises: a cooling furnace (15), the cooling furnace (15) being fixedly arranged on one side of the smelting furnace body (1), and a second pressure extraction port (16) being fixedly arranged on the lower surface of the cooling furnace (15), a switching motor (17) being fixedly installed inside the lower end of the cooling furnace (15), and a center disk (18) being fixedly arranged on the output shaft of the switching motor (17), an electric push rod (19) being fixedly arranged on the lower surface of the center disk (18), and the lower end of the electric push rod (19) being fixedly connected to an active The function plate (20) is provided with an air storage box (21) fixedly arranged on the lower surface of the function plate (20), and a micro air pump (22) is fixedly installed on the lower surface of the function plate (20), and one end of the micro air pump (22) is connected to the air storage box (21), a sliding clamping rod (23) is installed on the upper side surface of the function plate (20), and a cooling cylinder (24) is clamped and installed on the upper end of the function plate (20), and a clamping groove (25) is provided on the inner side surface of the lower end of the cooling cylinder (24), and the cooling furnace (1 5) is internally mounted with a rotatable switching barrel (26), and a cooling barrel (24) is internally mounted in the switching barrel (26), a central gear (27) is fixedly connected to the upper end of the rotating shaft of the switching barrel (26), and the central gear (27) is located inside a cavity on the surface of one side of the smelting furnace body (1), and a rotatable reversing gear (28) is installed inside the cavity on the surface of the side of the smelting furnace body (1) where the central gear (27) is located, and one end of the rotating shaft of the reversing gear (28) is fixedly connected to a connecting gear (29) ), a sliding piston plate (30) is installed inside the side surface of the smelting furnace body (1) above the connecting gear (29), and a connecting gear rod (31) is fixedly provided at the lower end of the piston plate (30), and a rotating gear plate (32) is installed on the side surface of the connecting gear rod (31), a rotating material taking barrel (33) is installed on the upper surface of the cooling furnace (15), and a sealing cover (34) is installed on the upper end of the material taking barrel (33), and a rotating adjusting rod (35) is installed on the upper surface of the cooling furnace (15).

3. The alloy vacuum melting furnace according to claim 1, characterized in that: The guide plate (6) is L-shaped, and the lower end of the guide plate (6) is an inwardly concave arc-shaped design. The drainage port (8) is designed to be inclined downward toward the outside of the smelting furnace body (1). The drainage port (7) is arranged opposite to the drainage port (8), and the drainage port (7) is in contact with the inner surface of the smelting furnace body (1). The lifting rod (10) is threadedly connected to the lifting frame (2). The angle gear (11) is meshedly connected to the angle gear rod (12), and the angle gear (11) is located on the side of the angle gear rod (12) away from the drainage port (8).

4. The alloy vacuum melting furnace according to claim 2, characterized in that: The function plate (20) is fan-shaped, and the function plates (20) are evenly distributed on the outside of the central disk (18). The upper end of the function plate (20) is hollow columnar, and the upper end of the clamping rod (23) passes through the outer surface of the upper end of the function plate (20). A spring is connected between the clamping rod (23) and the function plate (20). The clamping rod (23) and the function plate (20) are connected by sliding friction, and the upper end of the clamping rod (23) is clamped and connected with the clamping groove (25).

5. The alloy vacuum melting furnace according to claim 2, characterized in that: The cooling cylinder (24) inside one end of the switching barrel (26) is arranged opposite to the drainage port (8), and the central gear (27) is meshingly connected with the reversing gear (28), and both the central gear (27) and the reversing gear (28) are designed as bevel gears.

6. The alloy vacuum melting furnace according to claim 2, characterized in that: The connecting gear (29) and the reversing gear (28) are designed to be concentric, and the connecting gear (29) is meshedly connected with the connecting gear rod (31) via a toothed plate (32).

7. The alloy vacuum melting furnace according to claim 2, characterized in that: The piston plate (30) and the smelting furnace body (1) are connected by sliding friction, and a spring is connected between the piston plate (30) and the smelting furnace body (1).

8. The alloy vacuum melting furnace according to claim 2, characterized in that: A spring is connected between the tooth plate (32) and the connecting tooth rod (31), and a lower surface of one end of the tooth plate (32) is in contact with an outer surface of the connecting tooth rod (31).

9. The alloy vacuum melting furnace according to claim 2, characterized in that: The lower end surface of the material taking barrel (33) is in contact with the upper surface of the functional plate (20) directly below, and the material taking barrel (33) is connected to the cooling furnace (15) by sliding friction, and the material taking barrel (33) is connected to the cooling barrel (24) inside it by sliding friction, the upper end of the adjusting rod (35) is rotatably connected to the smelting furnace body (1), and a plate-like protrusion is fixedly provided on the upper end side surface of the material taking barrel (33), and the plate-like protrusion on the upper end side surface of the material taking barrel (33) is threadedly connected to the adjusting rod (35).

10. An alloy vacuum melting furnace smelting method according to any one of claims 1 to 9, characterized in that: The smelting method comprises the following steps: S1. Open the feeding cover (5) and feed the raw materials into the electric crucible (3) inside the smelting furnace (1) through the feeding port (4); S2. After the interior of the smelting furnace (1) is evacuated by connecting the first pressure relief port (13) to the vacuum unit, the electric crucible (3) is started to melt the alloy raw material; S3. Start the lifting motor (9) to drive the electric crucible (3) to move upward, and the electric crucible (3) rotates relative to the lifting frame (2) to pour the molten alloy into the guide plate (6) and out through the guide port (7) and the drainage port (8); S4. The lifting motor (9) drives the electric crucible (3) to slide down and reset the drainage port (8) to close, and the operator opens the feeding cover (5) to add raw materials; S5. The melting furnace body (1) is re-sealed and vacuumized, and the piston plate (30) drives the tooth plate (32) to move upward through the connecting gear rod (31) under the action of negative pressure, so that the switching barrel (26) drives the cooling cylinder (24) filled with alloy melt and the empty cooling cylinder (24) to exchange positions; S6. The micro air pump (22) is started to push the card rod (23) to slide and engage with the card slot (25) at the lower end of the cooling cylinder (24). At this time, the electric push rod (19) drives the function plate (20) to move downward so that the cooling cylinder (24) is pulled down and disconnected from the switching barrel (26); S7. The switching motor (17) is started to drive the center disk (18) and the function plate (20) to rotate and switch positions, so that the empty cooling cylinder (24) is rotated to the bottom of the switching barrel (26), and the electric push rod (19) is started to drive the function plate (20) to move upward so that the empty cooling cylinder (24) moves upward and is inserted into one end of the switching barrel (26); S8. The adjusting rod (35) is rotated to drive the material taking barrel (33) to move downward, and the material taking barrel (33) is fitted with the upper surface of the functional plate (20). The sealing cover (34) is twisted to remove the cooling barrel (24) and insert a new cooling barrel (24). Then, the sealing cover (34) is covered to continue cooling.

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