Alloy feeding device with premixing function for vacuum induction melting furnace

Abstract

The utility model relates to the technical field of vacuum induction melting, in particular to a vacuum induction melting furnace alloy feeding device with a premixing function, which comprises a feeding tank, the middle of the feeding tank is rotatably connected with a material storage tank through a one-way bearing, and the inner wall of the material storage tank is fixedly connected with a material distribution frame. The material distributing frame is of a polygon prism frame structure with the hollow middle, so that the material storage tank is divided into a plurality of material storage cavities. The bottom of the discharging groove is opened through upward movement of the material sealing plate, materials in the material storage cavities between the first partition plate and the material ejecting plate are accumulated in the material receiving hopper through the discharging groove, at the moment, the second electric control valve is in a closed state, and the materials discharged from the multiple material storage cavities are sequentially accumulated through the material receiving hopper; and then the driving shaft drives the stirring shaft to rotate on the inner wall of the material receiving hopper, so that different types of materials accumulated in the material receiving hopper are premixed, and the purpose of premixing the materials is achieved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum induction melting technology, specifically to an alloy feeding device for a vacuum induction melting furnace with premixing function. Background Technology

[0002] Vacuum induction melting is a process that uses electromagnetic induction in a vacuum environment to melt and alloy metallic materials. It is widely used in aerospace, military, and medical device industries. During vacuum induction melting, various alloying materials need to be added to the furnace to obtain alloys with specific properties. Because the process requirements for alloy melting differ, the melting points and saturated vapor pressures of each metallic element vary, and therefore the order and method of adding these elements also differ. For example, dopant elements, easily oxidized elements, easily evaporated elements, and metals with low melting points cannot be charged into the crucible along with other high-melting-point materials. These materials often need to be pre-loaded into a secondary charging device and added back into the crucible to melt the already molten liquid metal to achieve the desired melting effect.

[0003] For example, CN118856882A discloses a multi-functional feeding device for secondary feeding of a vacuum induction furnace, comprising a furnace body, a secondary feeding assembly above the furnace body, a feeding pipe installed at the bottom of the secondary feeding assembly, the bottom of the feeding pipe being connected to the furnace body, a gate valve installed on the feeding pipe, a feeding tank at the top of the feeding pipe, a top cover installed at the top of the feeding tank, symmetrical slots on both sides of the feeding tank, symmetrically installed snap-fit ​​parts on the top cover for engaging with the slots, a rotation drive unit installed on the top cover, and a material cavity inside the feeding tank. During operation, multiple storage troughs for storing different materials are provided within a fixed block. When the feeding tank and top cover are installed, the snap-fit ​​parts engage with the snap-fit ​​slots, thereby driving a second rotating shaft to rotate via a motor, causing a receiving plate to move below the storage trough requiring feeding, facilitating the addition of the required materials and increasing the versatility of secondary feeding.

[0004] However, in actual use, the feeding device structure is only used for top material classification and feeding, and does not have the function of pre-mixing materials in advance. The existing device needs to set aside a separate storage chamber to store the mixed materials, which not only increases the operation of material transfer, but also cannot meet the needs of "instant premixing and instant feeding" in some processes, and has low applicability. Utility Model Content

[0005] The purpose of this invention is to provide an alloy feeding device for a vacuum induction melting furnace with a premixing function, so as to solve the problem of not having the function of premixing materials in advance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an alloy feeding device for a vacuum induction melting furnace with premixing function, comprising:

[0007] A feeding tank is provided, and a storage tank is rotatably connected to the middle of the feeding tank via a one-way bearing. A material distribution frame is fixedly connected to the inner wall of the storage tank. The material distribution frame is a hollow multi-faceted prism frame structure to divide the storage tank into multiple storage cavities. A hopper and a first partition are fixedly connected to the inner wall of each storage cavity from top to bottom. A first electrically controlled valve is fixedly connected to the bottom of the hopper, and the first electrically controlled valve is fixedly embedded in the middle of the first partition.

[0008] The inner wall of the storage cavity corresponding to the bottom position of the first electrically controlled valve is movably connected to a top plate that moves up and down. The top plate is inclined towards the center of the feeding tank. A discharge chute is opened at one end of the storage tank corresponding to the center position. The discharge chute is connected to the middle of the storage tank and the storage cavity. A sealing plate that moves up and down is movably connected at one end of the inner wall of the distribution rack corresponding to the position of the discharge chute, so as to block the discharge chute.

[0009] A receiving hopper is fixedly connected to the bottom of the middle part of the material distribution rack, and a drive shaft is rotatably connected to the inner wall of the receiving hopper. A stirring shaft is fixedly connected to the surface of the drive shaft, and a second electrically controlled valve is fixedly connected to the bottom of the receiving hopper.

[0010] Preferably, the inner walls of the storage cavity corresponding to the discharge trough are each fixedly connected to a second partition plate to guide the material inside the storage cavity to the discharge trough. The sealing plate is a sideways U-shaped structure, and the side wall of the material distribution rack corresponding to the sealing plate is provided with a movable groove. The movable groove corresponds to the position of the second partition plate so that the movable groove is not connected to the storage cavity. The sealing plate is movably connected to the inner wall of the movable groove.

[0011] Preferably, a lifting frame is fixedly connected to one end of the sealing plate away from the discharge chute. The lifting frame has an inverted L-shaped structure. A baffle plate is fixedly connected to the inner wall of the material distribution frame corresponding to the lifting frame position to guide the material discharged from the discharge chute. A mounting plate is fixedly connected to the top of the multiple baffle plates. The drive shaft is rotatably connected to the middle of the mounting plate through a bearing.

[0012] Preferably, a support frame is fixedly connected to the top of one end of the feeding tank, and the drive shaft is rotatably connected to the middle of the support frame through a one-way bearing. A first electric push rod is fixedly connected to the bottom of the support frame, and a drive frame is fixedly connected to the bottom of the first electric push rod. The drive frame has a C-shaped structure, and the top of one of the lifting frames is located on the inner wall of the drive frame, so that when the first electric push rod drives the drive frame to move upward, the drive frame drives one of the lifting frames to move upward.

[0013] Preferably, the surface of the drive shaft is rotatably connected to a driven gear via a single bearing, the surface of the driven gear is meshed with a drive gear, the top of the drive gear is fixedly connected to a drive motor, and the drive motor is fixedly connected to the bottom of the support frame, the surface of the drive gear is meshed with a driven gear ring, and the driven gear ring is rotatably connected to the inner wall of the material distribution frame via a one-way bearing.

[0014] Preferably, the top plate has a cross-section of an inverted L-shaped structure with an inclined top, and the bottom of the top plate extends through and to the bottom of the storage tank. A first connecting ring is fixedly connected to the bottom of the top plate, a second electric push rod is fixedly connected to the bottom of the first connecting ring, a second connecting pipe is fixedly connected to the bottom of the second electric push rod, and the second connecting pipe is fixedly connected to the surface of the receiving hopper.

[0015] Preferably, a hinged seat is fixedly connected to one end of the feeding tank, a connecting frame is hinged to the top of the hinged seat, and a top cover is fixedly connected to one end of the connecting frame. An observation window is provided in the middle of the top cover, and the position of the observation window corresponds to the position of the first electric push rod, so that the material in the storage cavity corresponding to the position of the first electric push rod can be observed through the observation window.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention opens the bottom of the discharge trough by moving the sealing plate upward, allowing the material in the storage cavity between the first partition and the top plate to accumulate in the receiving hopper through the discharge trough. At this time, the second electrically controlled valve is closed, and the material discharged from multiple storage cavities is accumulated in the receiving hopper in sequence. Then, the drive shaft drives the stirring shaft to rotate on the inner wall of the receiving hopper, thereby premixing different types of materials accumulated in the receiving hopper, thus achieving the purpose of premixing materials.

[0018] This invention also uses a second electric push rod to drive the first connecting ring to move up and down, which in turn causes the first connecting ring to drive the top plate to move up and down, changing the volume of the storage cavity between the first electric control valve and the top plate, thereby achieving the purpose of adjusting the quantitative feeding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the alloy feeding device for a vacuum induction melting furnace with premixing function according to this utility model;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the alloy feeding device for a vacuum induction melting furnace with premixing function according to this utility model;

[0021] Figure 3 This is a partial orthogonal sectional view of the overall structure of the alloy feeding device for a vacuum induction melting furnace with premixing function according to this utility model;

[0022] Figure 4 This is a partial exploded view of the overall structure of the alloy feeding device for a vacuum induction melting furnace with premixing function according to this utility model;

[0023] Figure 5 A cross-sectional view of the material distribution frame structure of the alloy feeding device for a vacuum induction melting furnace with premixing function according to this utility model. Figure 1 ;

[0024] Figure 6 A cross-sectional view of the material distribution frame structure of the alloy feeding device for a vacuum induction melting furnace with premixing function according to this utility model. Figure 2 .

[0025] In the diagram: 1. Feeding tank; 2. Storage tank; 3. Distributor rack; 4. Sluice hopper; 5. First electrically controlled valve; 6. First partition plate; 7. Top plate; 8. Discharge chute; 9. Sealing plate; 10. Receiving hopper; 11. Drive shaft; 12. Agitator shaft; 13. Lifting frame; 14. Baffle plate; 15. Mounting plate; 16. Support frame; 17. First electric push rod; 18. Drive frame; 19. Driven gear; 20. Drive gear; 21. Drive motor; 22. Driven gear ring; 23. First connecting ring; 24. Second electric push rod; 25. Second connecting pipe; 26. Hinge seat; 27. Connecting frame; 28. Top cover; 29. ​​Observation window; 30. Second partition plate; 31. Movable groove; 32. Second electrically controlled valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-6 This utility model provides a technical solution: an alloy feeding device for a vacuum induction melting furnace with premixing function, comprising:

[0028] Feeding tank 1, with a storage tank 2 rotatably connected to the middle of the feeding tank 1 via a one-way bearing. A material distribution frame 3 is fixedly installed on the inner wall of the storage tank 2. The material distribution frame 3 is a multi-faceted prism frame structure with a hollow middle section, so as to divide the storage tank 2 into multiple storage cavities. A hopper 4 and a first partition 6 are fixedly installed on the inner wall of the storage cavity from top to bottom. A first electrically controlled valve 5 is fixedly installed at the bottom of the hopper 4, and the first electrically controlled valve 5 is fixedly embedded in the middle of the first partition 6.

[0029] A top plate 7 that moves up and down is movably connected to the inner wall of the storage cavity corresponding to the bottom position of the first electrically controlled valve 5. The top plate 7 is inclined towards the center of the feeding tank 1. A discharge chute 8 is opened at one end of the storage tank 2 corresponding to the center position. The discharge chute 8 is connected to the middle of the storage tank 2 and the storage cavity. A sealing plate 9 that moves up and down is movably connected to one end of the inner wall of the material distribution rack 3 corresponding to the position of the discharge chute 8, so as to block the discharge chute 8.

[0030] A receiving hopper 10 is fixedly installed at the bottom of the middle part of the material distribution rack 3, and a drive shaft 11 is rotatably connected to the inner wall of the receiving hopper 10. A stirring shaft 12 is fixedly installed on the surface of the drive shaft 11, and a second electrically controlled valve 32 is fixedly installed at the bottom of the receiving hopper 10.

[0031] When the above structure is in use, the dynamic sealing plate 9 moves upward to open the bottom of the discharge trough 8, and the material in the storage cavity between the first partition plate 6 and the top plate 7 is discharged through the discharge trough 8 to the middle of the material distribution frame 3 and piled up in the receiving hopper 10. At this time, the second electric control valve 32 is in the closed state, and the material discharged from multiple storage cavities is piled up in the receiving hopper 10 in sequence. Then, the drive shaft 11 drives the stirring shaft 12 to rotate on the inner wall of the receiving hopper 10, thereby premixing different kinds of materials piled up in the receiving hopper 10, thus achieving the purpose of premixing the materials. After the premixing is completed, the second electric control valve 32 is opened to complete the discharge of the premixed material.

[0032] A second partition plate 30 is fixedly installed at both ends of the inner wall of the storage cavity corresponding to the discharge trough 8, so as to guide the material inside the storage cavity to the discharge trough 8. The sealing plate 9 has a sideways U-shaped structure, and the material distribution frame 3 has a movable groove 31 on the side wall corresponding to the sealing plate 9. The movable groove 31 is positioned corresponding to the second partition plate 30, so that the movable groove 31 is not connected to the storage cavity. The sealing plate 9 is movably connected to the inner wall of the movable groove 31. A lifting frame 13 is fixedly installed at the end of the sealing plate 9 away from the discharge trough 8. The lifting frame 13 has an inverted L-shaped structure. A baffle plate 14 is fixedly installed on the inner wall of the material distribution frame 3 corresponding to the lifting frame 13, so as to prevent the material discharged from the discharge trough 8 from the material distribution frame 3. The material is guided by a mounting plate 15 fixedly installed on the top of multiple baffles 14. The drive shaft 11 is rotatably connected to the middle of the mounting plate 15 through a bearing. A support frame 16 is fixedly installed on the top of one end of the feeding tank 1, and the drive shaft 11 is rotatably connected to the middle of the support frame 16 through a one-way bearing. A first electric push rod 17 is fixedly installed at the bottom of the support frame 16, and a drive frame 18 is fixedly installed at the bottom of the first electric push rod 17. The drive frame 18 has a C-shaped structure, and the top of one of the lifting frames 13 is located on the inner wall of the drive frame 18, so that when the first electric push rod 17 drives the drive frame 18 to move upward, the drive frame 18 drives one of the lifting frames 13 to move upward.

[0033] When the above structure is in use, the material distribution rack 3 will move the storage cavity that needs to be unloaded to the first electric push rod 17. At this time, the top of the lifting rack 13 is located on the inner wall of the drive rack 18. The first electric push rod 17 drives the lifting rack 13 to move upward through the drive rack 18, so that the lifting rack 13 drives the sealing plate 9 to move upward to open the bottom of the discharge chute 8, and so that the material in the storage cavity between the first partition plate 6 and the top plate 7 is discharged into the middle of the interior of the material distribution rack 3 through the discharge chute 8.

[0034] A driven gear 19 is rotatably connected to the surface of the drive shaft 11 via a single bearing. A drive gear 20 meshes with the surface of the driven gear 19. A drive motor 21 is fixedly mounted on the top of the drive gear 20 and is fixedly mounted on the bottom of the support frame 16. A driven gear ring 22 meshes with the surface of the drive gear 20 and is rotatably connected to the inner wall of the material distribution frame 3 via a one-way bearing.

[0035] When the above structure is in use, since the drive gear 20 rotates in one direction with the drive shaft 11, and the drive shaft 11 rotates in one direction with the support frame 16, and the driven gear ring 22 rotates in one direction with the material distribution frame 3, and the material distribution frame 3 and the storage tank 2 rotate in one direction with the feeding tank 1, when the drive gear 20 rotates in the forward direction, the drive gear 20 will drive the material distribution frame 3 to rotate through the driven gear ring 22, and the drive shaft 11 will not rotate. When the drive gear 20 rotates in the reverse direction, the drive gear 20 will drive the drive shaft 11 to rotate through the driven gear 19, and the material distribution frame 3 will not rotate.

[0036] The top plate 7 has a cross-section of an inverted L-shaped structure with an inclined top, and the bottom of the top plate 7 extends through and to the bottom of the storage tank 2. A first connecting ring 23 is fixedly installed at the bottom of the top plate 7, a second electric push rod 24 is fixedly installed at the bottom of the first connecting ring 23, a second connecting pipe 25 is fixedly installed at the bottom of the second electric push rod 24, and the second connecting pipe 25 is fixedly installed on the surface of the receiving hopper 10.

[0037] When the above structure is in use, the first connecting ring 23 is moved up and down by the second electric push rod 24, which in turn moves the top plate 7 up and down, changing the volume of the storage cavity between the first electric control valve 5 and the top plate 7, thereby achieving the purpose of adjusting the quantitative feeding.

[0038] A hinge seat 26 is fixedly installed at one end of the feeding tank 1. A connecting frame 27 is hinged to the top of the hinge seat 26, and a top cover 28 is fixedly installed at one end of the connecting frame 27. An observation window 29 is provided in the middle of the top cover 28, and the position of the observation window 29 corresponds to the position of the first electric push rod 17, so that the material in the storage cavity corresponding to the position of the first electric push rod 17 can be observed through the observation window 29. By setting the hinge seat 26 and the connecting frame 27, it is convenient to open the feeding tank 1 for maintenance. Through the observation window 29, it can be observed whether it is the corresponding material required, preventing the program from making the feeding of non-required materials due to errors.

[0039] Working principle: When in use, this utility model is hinged to the hinge seat 26 via the connecting frame 27. When the top cover 28 is opened, different materials can be added to the multiple storage cavities formed by the storage tank 2 and the distribution frame 3. After the materials are added, the top cover 28 is closed. At this time, the materials move downward in the storage cavity and fall into the storage cavity between the first partition plate 6 and the top plate 7 through the hopper 4 and the first electrically controlled valve 5.

[0040] When it is necessary to adjust the quantitative feeding, the first connecting ring 23 is moved up and down by the second electric push rod 24, which in turn moves the top plate 7 up and down, changing the volume of the storage cavity between the first electric valve 5 and the top plate 7, thereby achieving the purpose of adjusting the quantitative feeding.

[0041] When a material needs to be fed, the drive motor 21 drives the drive gear 20 to rotate. Since the drive gear 20 rotates in one direction with the drive shaft 11 and the support frame 16, and the driven gear ring 22 rotates in one direction with the material distribution frame 3, and the material distribution frame 3 and the storage tank 2 rotate in one direction with the feeding tank 1, when the drive gear 20 rotates in the forward direction, the drive gear 20 will drive the material distribution frame 3 to rotate through the driven gear ring 22, and the drive shaft 11 will not rotate. When the drive gear 20 rotates in the reverse direction, the drive gear 20 will drive the drive shaft 11 to rotate through the driven gear 19, and the material distribution frame 3 will not rotate.

[0042] When the material distribution rack 3 rotates, it will move the storage cavity that needs to be unloaded to the first electric push rod 17. At this time, the top of the lifting frame 13 is located on the inner wall of the drive frame 18. At this time, the first electric control valve 5 in the discharge cavity is closed. Then, the first electric push rod 17 drives the drive frame 18 to move upward, and the drive frame 18 drives the lifting frame 13 to move upward. When the lifting frame 13 moves upward, it will cause the sealing plate 9 to move upward and open the bottom of the discharge trough 8. The material in the storage cavity between the first partition plate 6 and the top plate 7 will be discharged through the discharge trough 8 to the middle of the inside of the material distribution rack 3 and accumulate in the receiving hopper 10. When the second electric control valve 32 is in the connected state, the material in the receiving hopper 10 will fall to complete the purpose of quantitative unloading.

[0043] When different materials need to be premixed, the second electrically controlled valve 32 is closed, and the materials discharged from multiple storage cavities are sequentially accumulated through the receiving hopper 10. Then, the driven gear 19 drives the drive gear 20 to rotate in the opposite direction, so that the drive gear 20 drives the drive shaft 11 to rotate through the driven gear 19. When the drive shaft 11 rotates, it will drive the stirring shaft 12 to rotate on the inner wall of the receiving hopper 10, thereby premixing the different types of materials accumulated in the receiving hopper 10, thus achieving the purpose of premixing the materials. After the premixing is completed, the second electrically controlled valve 32 is opened to complete the discharge of the premixed materials.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An alloy feeding device for a vacuum induction melting furnace with premixing function, characterized in that: include: A feeding tank (1) is connected to a storage tank (2) in a one-way rotatable manner in the middle of the feeding tank (1). A material distribution rack (3) is fixedly connected to the inner wall of the storage tank (2). The material distribution rack (3) is a multi-faceted prism frame structure with a hollow middle section, so as to divide the storage tank (2) into multiple storage cavities. A hopper (4) and a first partition (6) are fixedly connected to the inner wall of the storage cavity from top to bottom. A first electrically controlled valve (5) is fixedly connected to the bottom of the hopper (4), and the first electrically controlled valve (5) is fixedly embedded in the middle of the first partition (6). The inner wall of the storage cavity corresponding to the bottom position of the first electrically controlled valve (5) is movably connected to a top plate (7) that moves up and down. The top plate (7) is inclined towards the center of the feeding tank (1). The storage tank (2) is provided with a discharge trough (8) at one end corresponding to the center position. The discharge trough (8) is connected to the middle part of the storage tank (2) and the storage cavity. The inner wall of the distribution rack (3) is movably connected to a sealing plate (9) that moves up and down at one end corresponding to the position of the discharge trough (8) to block the discharge trough (8). The bottom of the middle part of the material distribution rack (3) is fixedly connected to a receiving hopper (10), and the inner wall of the receiving hopper (10) is rotatably connected to a drive shaft (11). The surface of the drive shaft (11) is fixedly connected to a stirring shaft (12), and the bottom of the receiving hopper (10) is fixedly connected to a second electrically controlled valve (32).

2. The alloy feeding device for a vacuum induction melting furnace with premixing function according to claim 1, characterized in that: The storage cavity is fixedly connected to the two ends of the inner wall of the corresponding discharge trough (8) so as to guide the material inside the storage cavity to the discharge trough (8). The sealing plate (9) is a side-inverted U-shaped structure, and the material distribution rack (3) is provided with a movable groove (31) on the side wall of the corresponding sealing plate (9). The movable groove (31) is corresponding to the position of the second partition (30) so that the movable groove (31) is not connected to the storage cavity. The sealing plate (9) is movably connected to the inner wall of the movable groove (31).

3. The alloy feeding device for a vacuum induction melting furnace with premixing function according to claim 2, characterized in that: The sealing plate (9) is fixedly connected to a lifting frame (13) at one end away from the discharge trough (8). The lifting frame (13) has an inverted L-shaped structure. The material distribution frame (3) is fixedly connected to a baffle plate (14) on the inner wall corresponding to the lifting frame (13) to guide the material discharged from the discharge trough (8). The top of the multiple baffle plates (14) is fixedly connected to a mounting plate (15). The drive shaft (11) is rotatably connected to the middle of the mounting plate (15) through a bearing.

4. The alloy feeding device for a vacuum induction melting furnace with premixing function according to claim 3, characterized in that: A support frame (16) is fixedly connected to the top of one end of the feeding tank (1), and the drive shaft (11) is rotatably connected to the middle of the support frame (16) through a one-way bearing. A first electric push rod (17) is fixedly connected to the bottom of the support frame (16), and a drive frame (18) is fixedly connected to the bottom of the first electric push rod (17). The drive frame (18) has a C-shaped structure, and the top of one of the lifting frames (13) is located on the inner wall of the drive frame (18), so that when the first electric push rod (17) drives the drive frame (18) to move upward, the drive frame (18) drives one of the lifting frames (13) to move upward.

5. The alloy feeding device for a vacuum induction melting furnace with premixing function according to claim 4, characterized in that: The drive shaft (11) is rotatably connected to a driven gear (19) via a single bearing. The driven gear (19) is meshed with a drive gear (20). The top of the drive gear (20) is fixedly connected to a drive motor (21), and the drive motor (21) is fixedly connected to the bottom of the support frame (16). The drive gear (20) is meshed with a driven gear ring (22), and the driven gear ring (22) is rotatably connected to the inner wall of the material distribution frame (3) via a one-way bearing.

6. The alloy feeding device for a vacuum induction melting furnace with premixing function according to claim 5, characterized in that: The top plate (7) has a cross-section of an inverted L-shaped structure with an inclined top, and the bottom of the top plate (7) extends through and to the bottom of the storage tank (2). The bottom of the top plate (7) is fixedly connected to a first connecting ring (23), the bottom of the first connecting ring (23) is fixedly connected to a second electric push rod (24), the bottom of the second electric push rod (24) is fixedly connected to a second connecting pipe (25), and the second connecting pipe (25) is fixedly connected to the surface of the receiving hopper (10).

7. The alloy feeding device for a vacuum induction melting furnace with premixing function according to claim 6, characterized in that: One end of the feeding tank (1) is fixedly connected to a hinge seat (26), and a connecting frame (27) is hinged to the top of the hinge seat (26). One end of the connecting frame (27) is fixedly connected to a top cover (28). An observation window (29) is provided in the middle of the top cover (28), and the position of the observation window (29) corresponds to the position of the first electric push rod (17), so that the material in the storage cavity corresponding to the position of the first electric push rod (17) can be observed through the observation window (29).

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