Lifting type stirring device of vacuum induction furnace

Abstract

The utility model discloses a lifting type stirring device of a vacuum induction furnace, which comprises a connecting seat arranged at the top of a furnace cover of the vacuum induction furnace, the outer wall of the top of the connecting seat is fixedly connected with a fixing frame, one side of the outer wall of the top of the fixing frame is provided with a linear guide rail, and the outer wall of the bottom of the fixing frame is provided with a lifting motor. An output shaft of the lifting motor is connected with a threaded rod in the linear guide rail, a positioning frame is fixedly connected to one side of a sliding block in the linear guide rail, a limiting barrel is slidably connected to the inner wall of the fixing frame, a rotary sealing seat is fixedly connected to the outer wall of the top of the limiting barrel, and a stirring motor is installed on the outer wall of the top of the rotary sealing seat; an output shaft of the stirring motor is connected with a connecting rod through a coupling, and the bottom end of the connecting rod is connected with a stirring rod; according to the utility model, the linear guide rail and the positioning frame are arranged to drive the stirring rod to lift, so that the depth of the stirring rod in the crucible can be controlled.

Description

Technical Field

[0001] This utility model relates to the field of vacuum induction furnace technology, and in particular to a lifting stirring device for a vacuum induction furnace. Background Technology

[0002] Currently, vacuum induction furnace steelmaking has become an important process in the production of special steels, precision alloys, electrothermal alloys, high-temperature alloys, and corrosion-resistant alloys. Vacuum induction furnace smelting is widespread, and its two main principles are induction heating and a vacuum system. During operation, the molten metal in the crucible needs to be stirred.

[0003] A search revealed a Chinese patent publication number CN216115358U, which discloses a vacuum induction furnace with a stirring mechanism. The furnace includes a base plate, a rotating rod movably connected to the top of the base plate via a bearing, a turntable fixedly connected to the top of the rotating rod, a first motor fixedly connected to the right side of the top of the base plate, a first gear fixedly connected to the shaft of the first motor, a second gear fixedly sleeved on the surface of the rotating rod, and sealing gaskets fixedly connected to the four corners of the top of the turntable.

[0004] This patent uses a stirring rod to stir the solution inside the crucible, but the position of the stirring rod is fixed, making it inconvenient to adjust the stirring effect when needed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a lifting and stirring device for a vacuum induction furnace.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A lifting stirring device for a vacuum induction furnace includes a connecting seat disposed on the top of the furnace cover of the vacuum induction furnace. A fixing frame is fixedly connected to the top outer wall of the connecting seat. A linear guide rail is disposed on one side of the top outer wall of the fixing frame. A lifting motor is installed on the bottom outer wall of the fixing frame. The output shaft of the lifting motor is connected to a threaded rod in the linear guide rail. A positioning frame is fixedly connected to one side of the slider in the linear guide rail.

[0008] As a further embodiment of this utility model: the inner wall of the fixed frame is slidably connected to a limiting cylinder, the top outer wall of the limiting cylinder is fixedly connected to a rotating sealing seat, and the side wall of the limiting cylinder is fixedly connected to the positioning frame.

[0009] As a further embodiment of this utility model: a stirring motor is installed on the top outer wall of the rotary sealing seat, and the output shaft of the stirring motor is connected to a connecting rod through a coupling, with a stirring rod connected to the bottom end of the connecting rod.

[0010] As a further improvement of this utility model: the connecting rod is coaxial with the limiting cylinder, and the connecting rod slides in conjunction with the inner wall of the limiting cylinder; both the inner wall of the fixing frame and the inner wall of the top of the limiting cylinder are provided with dynamic sealing components.

[0011] As a further embodiment of this utility model: the dynamic sealing assembly includes multiple skeleton-shaped sealing rings and end caps, the multiple skeleton-shaped sealing rings are stacked in a straight line, and the skeleton-shaped sealing rings are located on the inner wall of the fixing frame and the limiting cylinder.

[0012] As a further improvement of this utility model: the end cap is detachably connected to the fixing frame and the limiting cylinder, and a gasket is provided between the skeleton-shaped sealing ring and the end cap.

[0013] As a further embodiment of this utility model: the connecting rod and the stirring rod are connected by a connecting assembly, which includes a connecting sleeve and a threaded sleeve. The connecting sleeve is fixed to the outer wall of the connecting rod, and the threaded sleeve is slidably fitted to the outer wall of the stirring rod. The outer wall of the connecting sleeve is provided with a boss that limits the threaded sleeve.

[0014] As a further improvement of this utility model: a limiting groove is provided on the bottom side wall of the connecting rod, the top of the stirring rod is limited and matched with the limiting groove, and the threaded sleeve is threaded and matched with the connecting sleeve.

[0015] Compared with the prior art, this utility model provides a lifting stirring device for a vacuum induction furnace, which has the following beneficial effects:

[0016] 1. This utility model, by setting a linear guide rail and a positioning frame, drives the stirring rod to rise and fall, thereby controlling the depth of the stirring rod in the crucible.

[0017] 2. This utility model, by setting a dynamic sealing component, achieves dynamic sealing during the movement of the limiting cylinder and the rotation of the connecting rod, thereby improving the sealing effect and ensuring the vacuum of the vacuum induction furnace.

[0018] 3. This utility model, by providing a connecting component, allows for quick assembly and disassembly of the stirring rod, facilitating the replacement of the stirring rod when stirring different metal solutions.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a lifting stirring device for a vacuum induction furnace proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the internal structure of a lifting stirring device for a vacuum induction furnace proposed in this utility model;

[0022] Figure 3 This is a partial structural schematic diagram of a lifting stirring device for a vacuum induction furnace proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the dynamic sealing assembly of a lifting stirring device for a vacuum induction furnace proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the connecting assembly of a lifting stirring device for a vacuum induction furnace proposed in this utility model.

[0025] In the diagram: 1. Vacuum induction furnace cover; 2. Connecting seat; 3. Fixing frame; 4. Linear guide rail; 5. Positioning frame; 6. Limiting cylinder; 7. Connecting rod; 8. Stirring rod; 9. Rotary sealing seat; 10. Dynamic sealing assembly; 11. Stirring motor; 12. Coupling; 13. Skeleton-shaped sealing ring; 14. End cap; 15. Washer; 16. Connecting sleeve; 17. Threaded sleeve; 18. Limiting groove. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Example 1

[0029] A lifting stirring device for a vacuum induction furnace, such as Figures 1 to 4As shown, the furnace includes a connecting seat 2 located on the top of the vacuum induction furnace cover 1. A fixing frame 3 is fixedly connected to the top outer wall of the connecting seat 2. A linear guide rail 4 is provided on one side of the top outer wall of the fixing frame 3. The linear guide rail 4 consists of a frame, a guide rod, a slider, and a threaded rod. The linear guide rail 4 is a mature existing technology. A lifting motor is installed on the bottom outer wall of the fixing frame 3. The output shaft of the lifting motor is connected to the threaded rod in the linear guide rail 4. A positioning frame 5 is fixedly connected to one side of the slider in the linear guide rail 4. The inner wall of the fixing frame 3... A sliding connection is provided with a limiting cylinder 6. A rotary sealing seat 9 is fixedly connected to the top outer wall of the limiting cylinder 6. The side wall of the limiting cylinder 6 is fixedly connected to the positioning frame 5. A stirring motor 11 is installed on the top outer wall of the rotary sealing seat 9. The output shaft of the stirring motor 11 is connected to a connecting rod 7 through a coupling 12. The connecting rod 7 is coaxial with the limiting cylinder 6 and slides with the inner wall of the limiting cylinder 6. Dynamic sealing components 10 are provided on the inner wall of the fixing frame 3 and the top inner wall of the limiting cylinder 6. A stirring rod 8 is connected to the bottom end of the connecting rod 7.

[0030] The dynamic sealing assembly 10 includes a plurality of skeleton-shaped sealing rings 13 and an end cap 14. The plurality of skeleton-shaped sealing rings 13 are arranged in a straight stack. The skeleton-shaped sealing rings 13 are located on the inner wall of the fixing frame 3 and the limiting cylinder 6. The end cap 14 is detachably connected to the fixing frame 3 and the limiting cylinder 6. A gasket 15 is provided between the skeleton-shaped sealing rings 13 and the end cap 14.

[0031] Before melting the metal in the crucible, the lifting motor drives the threaded rod in the linear guide 4 to rotate, causing the slider in the linear guide 4 to move the positioning frame 5 upward, which in turn moves the limiting cylinder 6 upward, causing the stirring rod 8 to move upward and detach from the crucible. After the metal in the crucible melts, the slider in the linear guide 4 moves downward, causing the stirring rod 8 to move into the crucible. The stirring motor 11 drives the connecting rod 7 to rotate through the coupling 12, so that the stirring rod 8 stirs the metal solution in the crucible. At the same time, by controlling the depth of the stirring rod 8 in the crucible and the rotation speed of the stirring rod 8, the skeleton-shaped sealing ring 13 dynamically seals the limiting cylinder 6 and the fixing frame 3 during the movement of the limiting cylinder 6 and the rotation of the connecting rod 7, ensuring the vacuum of the vacuum induction furnace.

[0032] By using a linear guide rail 4 and a positioning frame 5 to move the stirring rod 8 up and down, the depth of the stirring rod 8 in the crucible can be controlled.

[0033] By incorporating a dynamic sealing assembly 10, dynamic sealing is achieved during the movement of the limiting cylinder 6 and the rotation of the connecting rod 7, thereby improving the sealing effect and ensuring the vacuum of the vacuum induction furnace.

[0034] Example 2

[0035] A lifting stirring device for a vacuum induction furnace is provided in this embodiment, which is based on Embodiment 1 and makes the following improvements, such as... Figure 2 , Figure 5 As shown, the connecting rod 7 and the stirring rod 8 are connected by a connecting assembly, which includes a connecting sleeve 16 and a threaded sleeve 17. The connecting sleeve 16 is fixed to the outer wall of the connecting rod 7, and the threaded sleeve 17 is slidably fitted to the outer wall of the stirring rod 8. The outer wall of the connecting sleeve 16 is provided with a boss that limits the engagement of the threaded sleeve 17. A limiting groove 18 is provided on the bottom side wall of the connecting rod 7, and the top end of the stirring rod 8 is limited to the limiting groove 18. The threaded sleeve 17 is threadedly engaged with the connecting sleeve 16.

[0036] When stirring different metal solutions, the stirring rod 8 needs to be replaced for better stirring effect. At this time, rotate the threaded sleeve 17 to move the threaded sleeve 17 downward along the stirring rod 8. After the threaded sleeve 17 is separated from the connecting sleeve 16, the connection between the stirring rod 8 and the connecting rod 7 can be disconnected. Then, insert the top of the new stirring rod 8 into the limiting groove 18, and then rotate the threaded sleeve 17 upward to connect the threaded sleeve 17 with the connecting sleeve 16, thus completing the replacement of the stirring rod 8.

[0037] By setting up a connecting component, the stirring rod 8 can be quickly disassembled and assembled, making it easy to replace the stirring rod 8 when stirring different metal solutions.

[0038] Working principle: Before melting the metal in the crucible, the lifting motor drives the threaded rod in the linear guide rail 4 to rotate, causing the slider in the linear guide rail 4 to move the positioning frame 5 upward, which in turn moves the limiting cylinder 6 upward, causing the stirring rod 8 to move upward and detach from the crucible. After the metal in the crucible melts, the slider in the linear guide rail 4 moves downward, causing the stirring rod 8 to move into the crucible. The stirring motor 11 drives the connecting rod 7 to rotate through the coupling 12, causing the stirring rod 8 to stir the metal solution in the crucible. At the same time, by controlling the depth of the stirring rod 8 in the crucible and the rotation speed of the stirring rod 8, the movement of the limiting cylinder 6 and the rotation of the connecting rod 7 are controlled. During operation, the skeleton-shaped sealing ring 13 provides dynamic sealing to the limiting cylinder 6 and the fixing frame 3 to ensure the vacuum of the vacuum induction furnace. When stirring different metal solutions, the stirring rod 8 needs to be replaced for better stirring effect. At this time, rotate the threaded sleeve 17 to move the threaded sleeve 17 downward along the stirring rod 8. After the threaded sleeve 17 is separated from the connecting sleeve 16, the connection between the stirring rod 8 and the connecting rod 7 can be disconnected. Then, insert the top of the new stirring rod 8 into the limiting groove 18, and then rotate the threaded sleeve 17 upward to connect the threaded sleeve 17 with the connecting sleeve 16, thus completing the replacement of the stirring rod 8.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lifting stirring device for a vacuum induction furnace, comprising a connecting seat (2) disposed on the top of the furnace cover (1) of the vacuum induction furnace, characterized in that, A fixing frame (3) is fixedly connected to the top outer wall of the connecting seat (2). A linear guide rail (4) is provided on one side of the top outer wall of the fixing frame (3). A lifting motor is installed on the bottom outer wall of the fixing frame (3). The output shaft of the lifting motor is connected to the threaded rod in the linear guide rail (4). A positioning frame (5) is fixedly connected to one side of the slider in the linear guide rail (4).

2. The lifting stirring device for a vacuum induction furnace according to claim 1, characterized in that, The inner wall of the fixed frame (3) is slidably connected to the limiting cylinder (6), the top outer wall of the limiting cylinder (6) is fixedly connected to the rotating sealing seat (9), and the side wall of the limiting cylinder (6) is fixedly connected to the positioning frame (5).

3. The lifting stirring device for a vacuum induction furnace according to claim 2, characterized in that, A stirring motor (11) is installed on the top outer wall of the rotary sealing seat (9). The output shaft of the stirring motor (11) is connected to a connecting rod (7) via a coupling (12). A stirring rod (8) is connected to the bottom end of the connecting rod (7).

4. The lifting stirring device for a vacuum induction furnace according to claim 3, characterized in that, The connecting rod (7) is coaxial with the limiting cylinder (6), and the connecting rod (7) slides with the inner wall of the limiting cylinder (6). The inner wall of the fixing frame (3) and the inner wall of the top of the limiting cylinder (6) are both provided with dynamic sealing components (10).

5. A lifting stirring device for a vacuum induction furnace according to claim 4, characterized in that, The dynamic sealing assembly (10) includes multiple skeleton-shaped sealing rings (13) and end caps (14). The multiple skeleton-shaped sealing rings (13) are stacked in a straight line and are located on the inner wall of the fixing frame (3) and the limiting cylinder (6).

6. The lifting stirring device for a vacuum induction furnace according to claim 5, characterized in that, The end cap (14) is detachably connected to the fixing frame (3) and the limiting cylinder (6), and a gasket (15) is provided between the skeleton-shaped sealing ring (13) and the end cap (14).

7. A lifting stirring device for a vacuum induction furnace according to claim 3, characterized in that, The connecting rod (7) and the stirring rod (8) are connected by a connecting assembly, which includes a connecting sleeve (16) and a threaded sleeve (17). The connecting sleeve (16) is fixed to the outer wall of the connecting rod (7), and the threaded sleeve (17) is slidably fitted to the outer wall of the stirring rod (8). The outer wall of the connecting sleeve (16) is provided with a boss that limits the engagement of the threaded sleeve (17).

8. A lifting stirring device for a vacuum induction furnace according to claim 7, characterized in that, The bottom side wall of the connecting rod (7) has a limiting groove (18), the top of the stirring rod (8) is limited to the limiting groove (18), and the threaded sleeve (17) is threaded to the connecting sleeve (16).

Images