A spiral feeding type quantum electric furnace sand filling device

Abstract

The utility model belongs to metallurgy field provides a kind of spiral feeding formula quantum electric furnace sand filling device, including sand filling equipment, sand filling equipment side is provided with screw feeder, both sides edge part of screw feeder bottom end is symmetrically equipped with directional wheel, the middle part of the front and rear ends of screw feeder is all set up with guide sliding slot, the bottom end of screw feeder inner wall is provided with third driving part, third driving part upper surface output end place is equipped with movable support, movable support inner top rotatable mounting has supporting shaft, supporting shaft outer surface is equipped with connecting frame, connecting frame inside is provided with conveying mechanism, for conveying material to sand filling equipment;The utility model is through the "continuous controllable conveying" characteristics of spiral conveying plate, in combination with the speed regulation of first driving part, spiral blade parameter adaptation, can accurately control single sand filling amount, solve the sand filling amount fluctuation problem caused by traditional gate valve "extensive control";Guarantee the sand filling quality consistency of steel outlet, provide reliable basis for automatic tapping.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgy, specifically a spiral feeding quantum electric furnace sand filling device. Background Technology

[0002] Quantum electric furnaces, as a type of metallurgical equipment integrating advanced electric arc heating technology and intelligent control systems, are mainly used for smelting metal materials. With their high energy conversion efficiency and precise temperature control capabilities, they are widely used in the field of steel smelting. As a key channel for the outflow of molten steel, the tapping port needs to be filled with diversion sand to achieve the functions of sealing and diverting the flow. The diversion sand can prevent the molten steel from leaking during non-tapping stages, and can also automatically open the channel with the help of the gravity of the molten steel during tapping, ensuring that the tapping process is stable and controllable.

[0003] To automate the filling of slag at the tapping spout, various slag filling devices for electric arc furnaces have emerged in existing technologies. Their core function is to replace manual labor in quantitatively feeding slag into the tapping spout, thereby improving operational safety and efficiency. Currently, most published slag filling devices use electric or pneumatic slide gate valves as the control core. The opening and closing of the valve controls the flow of slag: when the valve is open, the slag in the storage bin falls to the tapping spout under gravity; when the valve is closed, the filling process terminates.

[0004] However, in the use of such sand-filling devices that rely on gate valves, the gate valves can only achieve "fully open" or "fully closed" control, making it impossible to continuously and precisely adjust the amount of sand filled per batch according to actual needs. Only a rough estimate can be made by controlling the valve opening and closing time. This crude control leads to large fluctuations in the amount of guiding sand filled each time, resulting in inconsistent filling quality at the taphole. If too much sand is filled, it may cause excessive compaction of the guiding sand, hindering the smooth flow of molten steel and affecting the automatic tapping startup. If too little sand is filled, it is difficult to form an effective seal, potentially causing premature steel leakage or taphole blockage. These problems directly restrict the stability and reliability of the quantum electric arc furnace automatic tapping system, increase the frequency of manual intervention, and are detrimental to the efficient and automated operation of the smelting process. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a spiral feeding type quantum electric furnace sand filling device to solve the problem of inconsistent filling quality at the steel tapping port in the prior art.

[0006] A spiral feeder-type quantum electric furnace sand filling device includes a sand filling device. A spiral feeder is provided on one side of the sand filling device. Directional wheels are symmetrically installed on both sides of the bottom end of the spiral feeder. Guide grooves are opened in the middle of the front and rear ends of the spiral feeder. A third drive unit is provided at the bottom end of the inner wall of the spiral feeder. A movable bracket is installed at the output end of the upper surface of the third drive unit. A support shaft is rotatably installed at the top of the movable bracket. A connecting frame is installed on the outer surface of the support shaft. A conveying mechanism is provided inside the connecting frame for conveying materials to the sand filling device. The conveying mechanism includes a spiral conveying pipe, which is installed at the top of the connecting frame. A feed inlet is provided on one side of the upper surface of the spiral conveying pipe, and a discharge outlet is provided on one side of the bottom end of the spiral conveying pipe. A spiral conveying plate is rotatably installed inside the spiral conveying pipe. The bottom of the connecting frame is equipped with a rotating structure for controlling the rotation of the spiral conveyor plate; The movable support is also provided with a support component on one side of the bottom of the inner wall for supporting the spiral conveying pipe.

[0007] Preferably, the rotating structure includes a first driving part, which is disposed at the bottom of the connecting frame. A driving pulley is installed at one output end of the first driving part, and a driven pulley is installed on one side of the spiral conveying plate extending to the outside of the spiral conveying pipe. A connecting belt is sleeved on the outer surface of both the driven pulley and the driving pulley.

[0008] Preferably, the support component includes a second drive unit, which is disposed on one side of the bottom end of the inner wall of the movable bracket, and a support member is installed at the output end of the upper surface of the second drive unit.

[0009] Preferably, the upper surface of the support member is provided with an arc-shaped groove, and the support member is located near the bottom of the outer surface of the spiral conveying pipe, and the spiral conveying pipe and the support member are adapted to each other.

[0010] Preferably, a support frame is fixedly installed at the top center of the screw feeder, and a hopper is movably arranged inside the support frame, with the bottom opening of the hopper extending into the feed inlet.

[0011] Preferably, the front and rear ends of the movable support extend through the guide groove to the outside of the screw feeder, and the guide groove and the movable support are interlocked.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model utilizes the "continuous and controllable conveying" characteristic of the spiral conveyor plate, combined with the speed adjustment of the first drive unit and the adaptation of spiral blade parameters, to accurately control the amount of sand filled in a single operation, thus solving the problem of sand filling fluctuation caused by the "coarse control" of traditional slide gate valves. Regardless of changes in the moisture content and particle size of the diverting sand, the stable spiral push ensures consistent sand filling quality at the steel outlet, providing a reliable foundation for automatic steel tapping.

[0013] 2. This utility model, through the continuous conveying mode of the spiral conveying pipe, combined with the rapid movement of the directional wheel and the rapid position adjustment of the third drive unit, can significantly shorten the sand filling preparation time; at the same time, the stable support of the spiral conveying pipe by the second drive unit avoids the interruption of the sand filling process due to vibration, realizing a highly efficient closed loop of "rapid alignment, stable conveying, and precise filling", thereby improving the overall production efficiency of the quantum electric furnace.

[0014] 3. This utility model can adapt to complex scenarios such as steel outlet tilting, misalignment, and high-temperature zone avoidance by using the spiral conveying pipe through the dual adjustment of "angle rotation + position movement" of the movable support. (e.g., changes in the distance between the steel outlet and the sand filling equipment, and layout restrictions of the high-temperature zone of the furnace). By adjusting the layout of the spiral conveying pipe, the device body is kept away from the high-temperature zone, reducing the damage to the equipment caused by heat radiation and heat conduction, extending the equipment life, and reducing operation and maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the screw feeder in this utility model; Figure 3 This is a schematic diagram of the connecting frame in this utility model; Figure 4 This is a cross-sectional structural diagram of the spiral conveying pipe in this utility model.

[0016] In the picture: 1. Sand filling equipment; 2. Screw feeder; 3. Directional wheel; 4. Guide chute; 5. Movable support; 6. Support shaft; 7. Screw conveyor pipe; 8. Inlet; 9. Outlet; 10. Screw conveyor plate; 11. Connecting frame; 12. First drive unit; 13. Second drive unit; 14. Support component; 15. Driven pulley; 16. Drive pulley; 17. Connecting belt; 18. Third drive unit; 19. Support frame; 20. Hopper. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0018] Example 1: As attached Figure 1 To be continued Figure 4 As shown: This utility model provides a spiral feeding type quantum electric furnace sand filling device, including a sand filling device 1. A spiral feeder 2 is provided on one side of the sand filling device 1. Directional wheels 3 are symmetrically installed on both sides of the bottom end of the spiral feeder 2. Guide grooves 4 are opened in the middle of the front and rear ends of the spiral feeder 2. A third drive part 18 is provided at the bottom of the inner wall of the spiral feeder 2. The third drive part 18 is an electric telescopic rod. A movable bracket 5 is installed at the output end of the upper surface of the third drive part 18. The front and rear ends of the movable bracket 5 extend through the guide grooves 4 to the outside of the spiral feeder 2. The guide grooves 4 and the movable bracket 5 are interlocked. A support shaft 6 is rotatably installed on the top of the movable bracket 5. A connecting frame 11 is installed on the outer surface of the support shaft 6. A conveying mechanism is provided inside the connecting frame 11 for conveying materials to the sand filling device 1. The conveying mechanism includes a spiral conveying pipe 7, which is installed at the top of the connecting frame 11. A feed inlet 8 is provided on one side of the upper surface of the spiral conveying pipe 7, and a discharge outlet 9 is provided on one side of the bottom end of the spiral conveying pipe 7. A spiral conveying plate 10 is rotatably installed inside the spiral conveying pipe 7. A support frame 19 is fixedly installed at the top center of the screw feeder 2. A hopper 20 is movably arranged inside the support frame 19. The bottom opening of the hopper 20 extends into the feed inlet 8. A rotating structure is provided at the bottom of the connecting frame 11 to control the rotation of the screw conveyor plate 10; The bottom side of the inner wall of the movable bracket 5 is also provided with a support component for supporting the spiral conveying pipe 7.

[0019] As can be seen from the above, before using the spiral feeder type quantum electric furnace sand filling device for sand filling operations, the operator must first move the spiral feeder 2 to a suitable position next to the sand filling equipment 1 by pushing the directional wheel 3 according to the position and height of the quantum electric furnace steel outlet. Next, the third drive unit 18 (electric telescopic rod No. 1) is started. The third drive unit 18 extends or retracts, driving the movable support 5 to move up and down along the guide slide 4 to adjust the height of the movable support 5. At the same time, since the front and rear ends of the movable support 5 pass through the guide slide 4, the guide slide 4 plays a limiting and guiding role for the movable support 5, ensuring that the movable support 5 moves smoothly. After adjusting the height of the movable support 5, because the support shaft 6 is rotatably installed on the top of the movable support 5, the operator can manually rotate the connecting frame 11 to make the connecting frame 11 rotate around the support shaft 6, so that the discharge port 9 of the spiral conveying pipe 7 is initially aligned with the steel outlet of the sand filling equipment 1, in preparation for subsequent precise sand filling. At this time, the hopper 20 is installed on the top of the screw feeder 2 via the support frame 19, and sufficient diversion sand can be added into the hopper 20. The diversion sand will enter the screw conveyor pipe 7 through the feed inlet 8 and wait for conveying. In the entire preliminary preparation process, the various components cooperate with each other to lay the foundation for accurate and stable sand filling. The directional wheel 3 is used to realize the flexible movement of the device. The engagement of the guide slide 4 and the movable bracket 5 ensures the stability of the adjustment process. The support shaft 6 allows the connecting frame 11 to flexibly adjust the angle. The cooperation of multiple components improves the applicability of the device.

[0020] Example 2: Reference Figure 2 and Figure 3 The rotating structure includes a first drive unit 12, which is a drive motor. The first drive unit 12 is located at the bottom of the connecting frame 11. A drive pulley 16 is installed at one output end of the first drive unit 12. A driven pulley 15 is installed on one side of the spiral conveying plate 10 extending to the outside of the spiral conveying pipe 7. A connecting belt 17 is sleeved on the outer surface of both the driven pulley 15 and the drive pulley 16. The support component includes a second drive unit 13, which is a second electric telescopic rod. The second drive unit 13 is located on one side of the bottom of the inner wall of the movable bracket 5. A support member 14 is installed at the output end of the upper surface of the second drive unit 13. An arc-shaped groove is opened on the upper surface of the support member 14. The support member 14 is located near the bottom of the outer surface of the spiral conveying pipe 7. The spiral conveying pipe 7 and the support member 14 are compatible with each other.

[0021] As can be seen from the above, when it is necessary to transport diverting sand to the sand filling equipment 1, the operator first starts the first drive unit 12 (drive motor). The first drive unit 12 operates, and its output end drives the active belt pulley 16 to rotate. The active belt pulley 16 is driven by the connecting belt 17, which makes the driven belt pulley 15 rotate synchronously. The driven belt pulley 15 then drives the spiral conveyor plate 10 to rotate inside the spiral conveyor pipe 7. During the rotation of the spiral conveyor plate 10, the diverting sand that enters from the feed port 8 in the spiral conveyor pipe 7 is pushed along the spiral conveyor pipe 7 to the discharge port 9, thereby realizing the transportation of diverting sand to the sand filling equipment 1. During the conveying process, if better support is needed for the spiral conveying pipe 7 to ensure stable conveying, the second drive unit 13 (electric telescopic rod No. 2) can be activated. The second drive unit 13 extends and pushes the support member 14 upward. Since the upper surface of the support member 14 has an arc-shaped groove that matches the bottom of the outer surface of the spiral conveying pipe 7, after the support member 14 rises, the arc-shaped groove will fit against the bottom of the spiral conveying pipe 7, providing stable support for the spiral conveying pipe 7, reducing the vibration of the spiral conveying pipe 7 caused by the conveying of materials, and making the conveying of the diversion sand more stable and precise.

[0022] Working principle: The screw feeder 2 is driven by the directional wheel 3, so that the discharge port 9 of the screw conveyor pipe 7 is aligned with the steel outlet of the sand filling equipment 1; the third drive unit 18 is started, which drives the movable support 5 to move along the guide slide 4 to adjust the height and horizontal position of the screw conveyor pipe 7; the movable support 5 is rotated so that the discharge angle of the screw conveyor pipe 7 is adapted to the steel outlet; the second drive unit 13 is started, the support 14 rises, and the arc groove fits the screw conveyor pipe 7 to ensure stable conveying; Fill the hopper 20 with guiding sand, start the first drive unit 12, and set the speed of the spiral conveyor plate 10; the spiral conveyor plate 10 rotates, and the guiding sand enters the spiral conveyor pipe 7 through the feed port 8, is pushed along the spiral blades to the discharge port 9, and falls accurately into the steel outlet; after the sand filling is completed, the first drive unit 12 reverses (or stops), the spiral conveyor plate 10 is reset, and it is ready for the next filling. If there is a high-temperature zone (such as the furnace heat dissipation zone) near the steel tapping port, the third drive unit 18 drives the movable support 5 to move along the guide slide 4, so that the spiral conveying pipe 7 is away from the high-temperature zone; at the same time, the angle of the movable support 5 is adjusted to avoid the pipe being directly exposed to heat radiation, reduce the equipment temperature, and extend the equipment life.

[0023] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A spiral feeder type quantum electric furnace sand filling device, comprising a sand filling device (1), wherein a spiral feeder (2) is provided on one side of the sand filling device (1), and directional wheels (3) are symmetrically installed on both sides of the bottom end of the spiral feeder (2), characterized in that: The screw feeder (2) has guide grooves (4) in the middle of both the front and rear ends. The screw feeder (2) has a third drive unit (18) at the bottom of the inner wall. The third drive unit (18) has a movable bracket (5) at the output end of the upper surface. The movable bracket (5) has a support shaft (6) rotatably installed at the top of the inner wall. The support shaft (6) has a connecting frame (11) installed on the outer surface. The connecting frame (11) has a conveying mechanism inside, which is used to convey materials to the sand filling equipment (1). The conveying mechanism includes a spiral conveying pipe (7), which is installed at the top of the connecting frame (11). A feed inlet (8) is provided on one side of the upper surface of the spiral conveying pipe (7), and a discharge outlet (9) is provided on one side of the bottom end of the spiral conveying pipe (7). A spiral conveying plate (10) is rotatably installed inside the spiral conveying pipe (7). The bottom of the connecting frame (11) is provided with a rotating structure for controlling the rotation of the spiral conveyor plate (10); The movable bracket (5) is also provided with a support component on one side of the bottom of the inner wall for supporting the spiral conveying pipe (7).

2. The spiral feeding type quantum electric furnace sand filling device as described in claim 1, characterized in that: The rotating structure includes a first drive unit (12), which is located at the bottom of the connecting frame (11). A drive pulley (16) is installed at the output end of one side of the first drive unit (12). A driven pulley (15) is installed on one side of the spiral conveying plate (10) extending to the outside of the spiral conveying pipe (7). A connecting belt (17) is fitted on the outer surface of both the driven pulley (15) and the drive pulley (16).

3. The spiral feeding type quantum electric furnace sand filling device as described in claim 1, characterized in that: The support component includes a second drive unit (13), which is located on one side of the bottom of the inner wall of the movable bracket (5), and a support member (14) is installed at the output end of the upper surface of the second drive unit (13).

4. The spiral feeding type quantum electric furnace sand filling device as described in claim 3, characterized in that: The upper surface of the support member (14) is provided with an arc-shaped groove. The support member (14) is located near the bottom of the outer surface of the spiral conveying pipe (7). The spiral conveying pipe (7) and the support member (14) are adapted to each other.

5. The spiral feeding type quantum electric furnace sand filling device as described in claim 1, characterized in that: The screw feeder (2) has a support frame (19) fixedly installed at the top center. A hopper (20) is movably arranged inside the support frame (19). The bottom opening of the hopper (20) extends into the feed inlet (8).

6. The spiral feeding type quantum electric furnace sand filling device as described in claim 1, characterized in that: The front and rear ends of the movable bracket (5) extend through the guide groove (4) to the outside of the screw feeder (2), and the guide groove (4) and the movable bracket (5) are interlocked.

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