Secondary quantitative feeding device of vacuum melting furnace

Abstract

In order to solve the problems that the secondary quantitative feeding of the smelting furnace is inconvenient to quantify and is easy to block, the utility model discloses a secondary quantitative feeding device of a vacuum smelting furnace, which comprises a smelting furnace body, a feeding funnel, a feeding cylinder and a quantitative mechanism, the top and the bottom of the feeding cylinder are provided with a first discharging opening communicating with the feeding hopper and a second discharging opening communicating with the smelting furnace body correspondingly. And the quantifying mechanism is composed of a driving motor and a quantifying cylinder, the quantifying cylinder is coaxially and rotatably connected into the feeding cylinder through the driving motor, and the quantifying cylinder is axially provided with material storage grooves distributed corresponding to the first discharging opening and the second discharging opening in position. According to the quantitative feeding device, intermittent quantitative feeding of materials can be achieved through the quantitative mechanism, the material blocking probability is reduced, and the metal smelting efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum melting furnaces, in particular to a secondary quantitative feeding device for a vacuum melting furnace. Background Art

[0002] High temperature melt charging device for vacuum melting furnace is a device specially designed for vacuum melting process, which aims to efficiently and safely add raw materials to high temperature molten metal. The device usually includes a crucible made of high temperature resistant material and a precisely controlled feeding system for storing and gradually releasing raw materials into the melting furnace.

[0003] In application number 202220120321.5, a feeding device for a vacuum melting furnace is provided, in which a feeding mechanism and a sealing mechanism are arranged to feed raw materials into the feeding mechanism. The sealing mechanism discharges the air drawn in during the feeding process, so that no air leaks into the feeding process, thereby ensuring that the metal is melted in a vacuum environment.

[0004] However, in actual operation, the device faces some challenges: due to the large amount of raw materials input, the raw materials are prone to accumulation and blockage at the outlet, which not only reduces the feeding speed and makes the feeding process uneven, but also affects the continuity and stability of smelting. When a blockage occurs, staff are required to intervene directly and stir manually to clear the blockage, which is a time-consuming and labor-intensive process. In addition, existing devices often lack an accurate feeding amount control mechanism, making it difficult to achieve precise control of the feeding amount, which is also a key point that needs to be improved in this device. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes a secondary quantitative feeding device for a vacuum melting furnace.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A secondary quantitative feeding device for a vacuum melting furnace comprises a melting furnace body, a feeding funnel, and also comprises:

[0008] A feed barrel, the feed barrel is fixedly connected between the smelting furnace body and the feed hopper, and the top and bottom of the feed barrel are respectively provided with a first discharge port connected to the feed hopper and a second discharge port connected to the smelting furnace body;

[0009] The quantitative mechanism is composed of a driving motor and a quantitative cylinder. The quantitative cylinder is coaxially connected to the inside of the feed cylinder through the driving motor, and the quantitative cylinder is axially provided with storage grooves corresponding to the positions of the first discharge port and the second discharge port.

[0010] Furthermore, an adjustment component is provided in the material storage tank, and the adjustment component includes a servo motor, a threaded rod, a threaded block, a support rod and a lifting plate. The servo motor is fixedly connected to the internal cavity of the metering cylinder, the threaded rod is fixedly connected to the output end of the servo motor, the threaded block is threadedly connected to the threaded rod, the lifting plate is slidably connected to the inside of the material storage tank along the depth direction of the material storage tank and the lifting plate matches the inner diameter of the material storage tank, and the two ends of the support rod in the length direction are respectively fixedly connected to the threaded block and the lifting plate.

[0011] Furthermore, a lower material barrel is connected to the lower part of the feed funnel, and a shaking mechanism for moving the material inside the lower material barrel is provided between the lower material barrel and the feed barrel.

[0012] Furthermore, the shaking mechanism includes a slider, a material guide plate and an elastic spring. The slider is slidably connected to a second slide groove opened on the inner wall of the lower barrel. The slider is connected to the material guide plate through an elastic spring, and the material guide plate is rotatably connected to the inner wall of the smelting furnace body.

[0013] Furthermore, a shifting assembly is connected between the shaking mechanism and the driving motor and is used to drive the material guide plate to rotate along the inner wall of the lower barrel.

[0014] Furthermore, the toggle assembly includes a cam, a limit rod, and a slide plate. The limit rod is fixedly connected to the first slide groove on the outer side wall of the lower barrel and its length is distributed along the height direction. The slide plate is connected to the limit rod for sliding up and down. The cam is transmission-connected to the output end of the drive motor and the cam is located directly below the slide plate. The rotation of the cam can drive the slide plate to move up and down to drive the slider to move up and down.

[0015] Furthermore, the sliding block and the sliding plate are provided with installation cavities on opposite sides thereof, and magnetic blocks are provided in the two installation cavities, and the two magnetic blocks have opposite polarities.

[0016] Furthermore, a return spring is sleeved on the outer side wall of the limiting rod, and two ends of the return spring are respectively fixedly connected to the slide plate and the side wall of the first sliding groove.

[0017] Furthermore, the discharge cylinder and the feed cylinder are connected via a discharge pipe, and a vacuum valve is provided on the discharge pipe.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. The quantitative mechanism set between the feeding hopper and the smelting furnace body can realize intermittent quantitative feeding of materials, avoiding problems such as blockage caused by one-time feeding during the secondary feeding process and low efficiency caused by manual feeding;

[0020] 2. The storage tank is equipped with an adjustment component to adjust the capacity of the storage tank, thereby adjusting the material feeding speed to meet the feeding requirements in different production environments;

[0021] 3. A feeding barrel is arranged between the quantitative mechanism and the feeding funnel, and a shaking mechanism is arranged inside the feeding barrel to shake the material during the secondary feeding process, further reducing the occurrence of material blockage;

[0022] 3. A toggle assembly is provided between the quantitative mechanism and the shaking mechanism. When the driving motor drives the quantitative cylinder to rotate, it can synchronously drive the cam to toggle the slider to realize the toggle of the guide plate, thereby realizing the synchronization of quantitative feeding and shaking action, and further improving the anti-blocking effect and feeding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a secondary quantitative feeding device for a vacuum melting furnace proposed by the utility model;

[0024] Figure 2 This is a schematic diagram of the connection structure between a feed tube and a first discharge port and a second discharge port in a secondary quantitative feeding device for a vacuum melting furnace proposed by the utility model;

[0025] Figure 3 This is a schematic diagram of the connection structure of a metering cylinder, a material storage tank and an output shaft in a secondary quantitative feeding device for a vacuum melting furnace proposed by the utility model;

[0026] Figure 4 This is a schematic diagram of the connection structure of a servo motor, a threaded rod, a threaded block, a support rod and a lifting plate in a secondary quantitative feeding device for a vacuum melting furnace proposed by the utility model;

[0027] Figure 5 This is a schematic diagram of the internal connection structure of the lower barrel in a secondary quantitative feeding device for a vacuum melting furnace proposed by the utility model;

[0028] Figure 6 The utility model is a schematic diagram of the internal connection structure of a metering cylinder in a secondary quantitative feeding device for a vacuum melting furnace.

[0029] In the figure: 1. smelting furnace body; 2. feeding cylinder; 3. discharge cylinder; 4. discharge pipe; 5. vacuum valve; 6. first discharge port; 7. second discharge port; 8. driving motor; 9. output shaft; 10. cam; 11. metering cylinder; 12. storage tank; 13. servo motor; 14. feeding funnel; 15. threaded block; 16. support rod; 17. lifting plate; 18. first slide groove; 19. limit rod; 20. slide plate; 21. reset spring; 23. slider; 24. guide plate; 25. elastic spring; 26. discharge port; 27. threaded rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] Reference Figure 1-6 A secondary quantitative feeding device for a vacuum melting furnace comprises a melting furnace body 1, the top of the melting furnace body 1 is connected with a feed tube 2, the feed tube 2 is connected with a discharge tube 3 through a discharge tube 4, a discharge port 26 is provided at the bottom of the discharge tube 3, the discharge port 26 is connected with the top of the discharge tube 4, a feed funnel 14 is provided at the top of the discharge tube 3, and a vacuum valve 5 is provided on the discharge tube 4.

[0033] The top and bottom of the feed barrel 2 are respectively provided with a first discharge port 6 and a second discharge port 7, the metering barrel 11 is coaxially rotatably connected to the inside of the feed barrel 2, and the outer wall of the metering barrel 11 is in contact with the inner wall of the feed barrel 2, and a metering mechanism with intermittent quantitative discharge is provided between the metering barrel 11 and the feed barrel 2.

[0034] The quantitative mechanism includes a driving motor 8, an output shaft 9 and a storage tank 12 arranged on the outer wall of the quantitative cylinder 11. The driving motor 8 is fixedly connected to one side of the feeding cylinder 2, and the output end of the driving motor 8 is fixedly connected to the output shaft 9, and the output shaft 9 is coaxially fixedly connected to the inside of the quantitative cylinder 11. The storage tank 12 is distributed in the axial direction of the quantitative cylinder 11 corresponding to the first discharge port 6 and the second discharge port 7. The driving motor 8 and the output shaft 9 can drive the quantitative cylinder 11 to rotate coaxially along the feeding cylinder 2. During the rotation of the quantitative cylinder 11, its storage tank 12 can correspond to the first discharge port 6 and the second discharge port 7 respectively. When the storage tank 11 is connected with the first discharge port 6, the quantitative cylinder 11 is connected with the discharge cylinder 3, and the material inside the discharge cylinder 3 enters the storage tank 12. The quantitative cylinder 11 continues to rotate so that the storage tank 12 corresponds to the second discharge port 7, thereby connecting the storage tank 12 to the inside of the smelting furnace body 1, and then feeding the material into the smelting furnace body 1 to realize intermittent quantitative feeding of the material.

[0035] An adjusting component for adjusting the capacity of the material storage tank 12 is also provided in the metering cylinder 11, and the adjusting component includes a servo motor 13, a threaded rod 27, a threaded block 15, a support rod 16, and a lifting plate 17. A cavity is provided in the metering cylinder 11, and the side wall servo motor 13 is fixedly connected in the cavity, and the output end of the servo motor 13 is fixedly connected to the threaded rod 27, and the threaded block 15 is threadedly connected to the threaded rod 27. The lifting plate 17 is slidably connected to the inside of the material storage tank 12 along the depth direction of the material storage tank 12, and the outer diameter of the lifting plate 17 is the same as the inner diameter of the material storage tank 12. Two groups of support rods 16 are provided, and their lengths are distributed along the depth direction of the material storage tank 12, and the two ends of the support rods 16 in the length direction are fixedly connected to the threaded block 15 and the lifting plate 17 respectively. The servo motor 13 drives the threaded block 15 to slide along the length direction of the threaded rod 27, thereby driving the lifting plate 17 to slide along the depth direction of the material storage tank 12 to achieve the adjustment of the capacity of the material storage tank 12.

[0036] A shaking mechanism is provided in the discharge barrel 3, and the shaking mechanism includes a second slide groove 22 opened on the inner wall of the discharge barrel 3, and a slider 23 is slidably connected to the inner wall of the second slide groove 22. The slider 23 is connected to a guide plate 24 through an elastic spring 25, and the guide plate 24 is rotatably connected to the inner wall of the discharge barrel 3.

[0037] A toggle assembly is also provided between the shaking mechanism and the unloading barrel 2, and the toggle assembly includes a cam 10, a limit rod 19, and a slide plate 20. The cam 10 is coaxially fixedly connected to the end of the output shaft 9 away from the driving motor 8. The limit rod 19 is provided on the first slide groove 18 opened on the outer wall of the unloading barrel 3. The outer wall of the vertically arranged limit rod 19 is slidably sleeved with the slide plate 20. The outer wall of the limit rod 19 is sleeved with a return spring 21. The two ends of the return spring 21 are respectively fixedly connected to the slide plate 20 and the inner wall of the first slide groove 18. The slide plate 23 An installation cavity is provided on the side opposite to the slide plate 20, and magnetic blocks are provided in the two installation cavities. The two magnetic blocks have opposite polarities, and one end of the slide plate 20 extends out of the outside of the discharge barrel 3 by a certain length and is located directly above the cam 10. The driving motor 8 drives the cam 10 to rotate, and the cam 10 can move the slide plate 20 to slide up and down along the limit rod 19. The slider 23 slides up and down along the second slide groove 22 driven by the magnetic block, and then drives the guide plate 24 to rotate along the inner wall of the discharge barrel 3 through the elastic spring 25, thereby realizing the movement of the material inside the discharge barrel 3.

[0038] The specific working principle of the utility model is as follows:

[0039] During actual operation, the material enters the discharge barrel 3 through the feed funnel 14. At this time, the vacuum valve 5 remains open to maintain the vacuum environment in the smelting furnace body 1. The drive motor 8 is started, and the metering barrel 11 and the cam 10 are driven to rotate through the output shaft 9. The cam 10 is arranged directly below the slide plate 20. When the cam 10 rotates, the slide plate 20 is lifted, and then with the cooperation of the reset spring 21 and the limit rod 19, the slide plate 20 makes a reciprocating motion in the vertical direction.

[0040] The servo motor 13 in the quantitative mechanism works, driving the threaded rod 27 to rotate, and the threaded block 15 moves up and down accordingly. The opening and closing of the storage trough 12 is controlled by the support rod 16 and the lifting plate 17, so as to realize accurate metering and intermittent feeding of the material, and the amount of material to be added can be accurately controlled by controlling the height of the lifting plate 17 in the storage trough 12. When the material enters the feed barrel 2 from the first feeding port 6 and the storage trough 12 corresponds to the first feeding port 6, the material will enter the storage trough 12 in the quantitative barrel 11, and then the material will eventually fall into the inside of the feeding barrel 3 from the second feeding port 7 during rotation.

[0041] At the same time, the shaking mechanism plays a role. Since the cam 10 is located directly below the slide plate 20, when the cam 10 rotates, it drives the slide plate 20 to slide on the limit rod 19. Through the interaction of the magnetic blocks and the elastic force of the return spring 21, the slider 23 and the second slide groove 22 reciprocate, and then the elastic spring 25 drives the guide plate 24 to rotate, helping the material to slide smoothly from the discharge port 26 into the high-temperature melt of the smelting furnace body 1 to avoid blockage. This series of actions ensures that in a vacuum environment, the material can be accurately, continuously and uninterruptedly added to the smelting process, thereby improving the smelting efficiency and product quality.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A secondary quantitative feeding device for a vacuum melting furnace, comprising a melting furnace body (1) and a feeding funnel (14), characterized in that: Also included are: A feed barrel (2), the feed barrel (2) being fixedly connected between the smelting furnace body (1) and the feed hopper (14), the top and bottom of the feed barrel (2) being respectively provided with a first discharge port (6) connected to the feed hopper (14) and a second discharge port (7) connected to the smelting furnace body (1); The quantitative mechanism is composed of a driving motor (8) and a quantitative cylinder (11), wherein the quantitative cylinder (11) is coaxially rotatably connected to the inside of a feeding cylinder (2) via the driving motor (8), and a material storage trough (12) is axially arranged on the quantitative cylinder (11) and is distributed correspondingly to the positions of a first material discharge port (6) and a second material discharge port (7).

2. A secondary quantitative feeding device for a vacuum melting furnace according to claim 1, characterized in that: An adjustment component is arranged in the material storage tank (12), and the adjustment component comprises a servo motor (13), a threaded rod (27), a threaded block (15), a support rod (16) and a lifting plate (17). The servo motor (13) is fixedly connected to the internal cavity of the quantitative cylinder (11), the threaded rod (27) is fixedly connected to the output end of the servo motor (13), the threaded block (15) is threadedly connected to the threaded rod (27), the lifting plate (17) is slidably connected to the inside of the material storage tank (12) along the depth direction of the material storage tank (12), and the lifting plate (17) matches the inner diameter of the material storage tank (12), and the two ends of the support rod (16) in the length direction are respectively fixedly connected to the threaded block (15) and the lifting plate (17).

3. A secondary quantitative feeding device for a vacuum melting furnace according to claim 1, characterized in that: The lower portion of the feed funnel (14) is connected to a discharge barrel (3), and a shaking mechanism is provided in the discharge barrel (3).

4. A secondary quantitative feeding device for a vacuum melting furnace according to claim 3, characterized in that: The shaking mechanism comprises a slider (23), a material guide plate (24) and an elastic spring (25); the slider (23) is slidably connected up and down in a second slide groove (22) provided on the inner wall of the lower material barrel (3); the slider (23) is connected to the material guide plate (24) via the elastic spring (25); and the material guide plate (24) is rotatably connected to the inner wall of the lower material barrel (3).

5. A secondary quantitative feeding device for a vacuum melting furnace according to claim 4, characterized in that: A toggle assembly is also connected between the shaking mechanism and the quantitative mechanism and is used to drive the material guide plate (24) to rotate along the inner wall of the lower barrel (3).

6. A secondary quantitative feeding device for a vacuum melting furnace according to claim 5, characterized in that: The toggle assembly comprises a cam (10), a limiting rod (19), and a slide plate (20); the limiting rod (19) is fixedly connected to a first slide groove (18) on the outer side wall of the lower barrel (3) and has a length distributed in the height direction; the slide plate (20) is connected to the limiting rod (19) in a sliding manner up and down; the cam (10) is transmission-connected to the output end of the drive motor (8) and the cam (10) is located directly below the slide plate (20); the rotation of the cam (10) can drive the slide plate (20) to move up and down, thereby driving the slider (23) to move up and down.

7. A secondary quantitative feeding device for a vacuum melting furnace according to claim 6, characterized in that: The sliding block (23) and the sliding plate (20) are each provided with a mounting cavity on one side opposite to the other, and magnetic blocks are each provided in the two mounting cavities, and the two magnetic blocks have opposite polarities.

8. A secondary quantitative feeding device for a vacuum melting furnace according to claim 6, characterized in that: The outer wall of the limiting rod (19) is sleeved with a return spring (21), and the two ends of the return spring (21) are respectively fixedly connected to the slide plate (20) and the side wall of the first slide groove (18).

9. A secondary quantitative feeding device for a vacuum melting furnace according to claim 3, characterized in that: The discharge barrel (3) and the feed barrel (2) are connected via a discharge pipe (4), and a vacuum valve (5) is provided on the discharge pipe (4).

Images