KR desulfurization device for high-sulfur molten iron

Abstract

The utility model discloses a high-sulfur molten iron KR desulfurization device, which is applied to the field of desulfurization devices, and comprises a desulfurization tank, a bracket and a controller, and a stirring head is arranged in the desulfurization tank; the driving motor is arranged to drive the rotating rod to rotate, the rotating rod drives the fourth belt pulley to rotate, the fourth belt pulley drives the first belt pulley and the connecting rod in the first belt pulley to rotate through a belt, and the connecting rod can drive the stirring head to rotate to stir molten iron; the rotating rod can further drive a third belt pulley to rotate, the third belt pulley drives a second belt pulley and an adjusting screw rod in the second belt pulley to rotate through a belt, a controller controls a driving motor to rotate clockwise or anticlockwise, the adjusting screw rod rotates clockwise or anticlockwise, and the adjusting screw rod can drive a movable plate to drive a connecting rod and a stirring head to move up and down; the stirring head can stir at different positions of the desulfurization tank; the stirring head is driven to the top of the desulfurization tank, so that a worker can conveniently maintain and replace the stirring head.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization, and in particular to a KR desulfurization device for high-sulfur molten iron. Background Technology

[0002] Hot metal desulfurization is a pretreatment process where molten iron is desulfurized outside the furnace before entering the steelmaking furnace to reduce the sulfur content of pig iron and improve steel quality. The KR (King Refractories) method of desulfurization is used in industrial production to limit the amount of magnesium used. The KR method involves immersing a cross-shaped stirring head, cast with refractory material and baked, to a certain depth in the molten iron ladle. The vortex generated by its rotation draws a weighed desulfurizing agent, fed through a feeder, onto the surface of the molten iron. The agent is then drawn into the molten iron by the vortex, ensuring thorough contact and reaction between the calcium oxide-based desulfurizing powder and the molten iron, thus achieving desulfurization. A desulfurization device is required for the KR method.

[0003] The current announcement number CN209227011U discloses a composite injection molten iron pre-desulfurization device. In this prior art, the stirring head is fixed in position and installed inside the device. Since the stirring head is in contact with the high temperature molten iron for a long time, the stirring head wears a lot. Therefore, the stirring head needs to be maintained or replaced regularly. The prior art installs the stirring head inside the device, which is not convenient for the stirring head to be maintained and replaced.

[0004] To address the aforementioned problems, we propose a KR desulfurization device for high-sulfur molten iron. Utility Model Content

[0005] The purpose of this invention is to provide a KR desulfurization device for high-sulfur molten iron, which has the advantage of facilitating the maintenance and replacement of the stirring head.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-sulfur molten iron KR desulfurization device, including a desulfurization tank, a support, and a controller. The desulfurization tank is equipped with a stirring head inside. A connecting rod is mounted on the top of the stirring head via a flange. A pulley is fitted on the surface of the connecting rod. Two sliding grooves are formed on the surface of the connecting rod. A slider fixedly connected to the pulley is slidably connected inside the sliding grooves. A movable plate is rotatably connected to the surface of the connecting rod via a bearing. An adjusting screw is threadedly connected inside the movable plate. A pulley is fixedly fitted on the surface of the adjusting screw. A pulley is connected to the pulley via a belt drive. A rotating rod is fixedly fitted inside the pulley. A pulley is fixedly fitted on the surface of the rotating rod and connected to the pulley via a belt drive. A drive motor is mounted on the top of the support. The output end of the drive motor is mounted to the rotating rod via a coupling.

[0007] By adopting the above technical solution, and by setting up a drive motor, pulley four, rotating rod, pulley three, pulley two adjusting screw, movable plate, slider one, slide groove one, pulley one, connecting rod and stirring head, the stirring head can be lifted to the top of the desulfurization tank, which facilitates the maintenance and replacement of the stirring head by the staff; at the same time, during the stirring process, the stirring head can stir at different positions inside the desulfurization tank.

[0008] The present invention is further configured such that: a connecting seat is fixedly connected to one side of the bracket, and the interior of the connecting seat is slidably connected to the connecting rod.

[0009] By adopting the above technical solution, the connecting seat is used to support the sliding block and ensure a stable connection between the sliding block and the annular groove.

[0010] The present invention is further configured such that: a circular groove is provided at the bottom of the connecting seat, and two sliding blocks that are fixedly connected to the pulley are slidably connected inside the circular groove.

[0011] The above technical solution uses an annular groove and a sliding block to limit the position of pulley one and assist pulley one in rotating.

[0012] The present invention is further configured such that: the controller and the drive motor are remotely connected via wires, and the controller is installed in the operating room.

[0013] Using the above technical solution, the controller is configured to remotely control the start and stop of the drive motor, as well as control the clockwise or counterclockwise rotation of the drive motor output and set the number of clockwise or counterclockwise rotations of the drive motor.

[0014] The present invention is further configured such that: a second sliding groove is provided on one side of the bracket, and a second slider that is fixedly connected to the movable plate is slidably connected inside the second sliding groove.

[0015] By adopting the above technical solution, the sliding groove 2 and the slider 2 are used to guide the vertical movement of the movable plate in a straight line and to prevent the movable plate from rotating along with the adjusting screw when the adjusting screw rotates.

[0016] The present invention is further configured such that: the output end of the drive motor is rotatably connected to the bracket via a bearing, and the rotating rod is rotatably connected to a fixed plate via a bearing.

[0017] The above technical solution uses a fixed plate to support the rotating rod.

[0018] The present invention is further configured such that: the adjusting screw is rotatably connected to two fixing plates that are fixedly connected to the bracket via bearings.

[0019] By adopting the above technical solution, the setting of the second fixing plate is used to support the adjusting screw, and the bearing can restrict the rotation of the adjusting screw in a fixed position.

[0020] In summary, this utility model has the following beneficial effects:

[0021] This invention features a drive motor that rotates a rotating rod, which in turn drives pulley four to rotate. Pulley four, via a belt, drives pulley one and its internal connecting rod to rotate, causing the connecting rod to rotate the stirring head and agitate the molten iron. Furthermore, the rotating rod also drives pulley three to rotate, which in turn drives pulley two and its internal adjusting screw to rotate. A controller controls the drive motor to rotate clockwise or counterclockwise, causing the adjusting screw to rotate clockwise or counterclockwise as well. The adjusting screw then drives a movable plate, which in turn moves the connecting rod and the stirring head up and down, allowing the stirring head to be positioned at different locations within the desulfurization tank for agitation. By driving the stirring head to the top of the desulfurization tank, maintenance and replacement of the stirring head can be easily performed by personnel. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural view of the present invention;

[0023] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0024] Figure 3 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0025] Reference numerals in the attached diagram: 1. Desulfurization tank; 2. Stirring head; 3. Connecting rod; 4. Pulley 1; 5. Slide 1; 6. Slider 1; 7. Movable plate; 8. Adjusting screw; 9. Pulley 2; 10. Pulley 3; 11. Rotating rod; 12. Pulley 4; 13. Bracket; 14. Drive motor; 15. Connecting seat; 16. Circular slide 1; 17. Sliding block; 18. Controller; 19. Slide 2; 20. Slider 2; 21. Fixed plate 1; 22. Fixed plate 2. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1:

[0028] refer to Figure 1 , Figure 2 and Figure 3A high-sulfur molten iron KR desulfurization device includes a desulfurization tank 1, a support 13, and a controller 18. The desulfurization tank 1 has an internal stirring head 2. A connecting rod 3 is mounted on the top of the stirring head 2 via a flange. A pulley 4 is fitted onto the surface of the connecting rod 3. Two grooves 5 are formed on the surface of the connecting rod 3. A slider 6, fixedly connected to the pulley 4, is slidably connected inside the grooves 5. A movable plate 7 is rotatably connected to the surface of the connecting rod 3 via a bearing. An adjusting screw 8 is threadedly connected inside the movable plate 7. A pulley 9 is fixedly fitted onto the surface of the adjusting screw 8. A pulley 10 is connected to the pulley 10 via a belt drive. A rotating rod 11 is fixedly fitted inside the pulley 10. A pulley 12, connected to the pulley 4 via a belt drive, is fixedly fitted onto the surface of the rotating rod 11. A drive motor 14 is mounted on the top of the support 13. The output end of the drive motor 14 is connected via a coupling. The rotating rod 11 is installed with a drive motor 14 to drive the rotating rod 11 to rotate. The rotating rod 11 drives the pulley 12 to rotate, and the pulley 12 drives the pulley 4 and its internal connecting rod 3 to rotate via a belt. The connecting rod 3 drives the stirring head 2 to rotate and stir the molten iron. The rotating rod 11 can also drive the pulley 10 to rotate, and the pulley 10 drives the pulley 9 and its internal adjusting screw 8 to rotate via a belt. The controller 18 controls the drive motor 14 to rotate clockwise or counterclockwise, so that the adjusting screw 8 rotates clockwise or counterclockwise. The adjusting screw 8 drives the movable plate 7 to move the connecting rod 3 and the stirring head 2 up and down, so that the stirring head 2 can be placed in different positions in the desulfurization tank 1 for stirring. After the stirring head 2 is driven to the top of the desulfurization tank 1, it is convenient for the staff to maintain and replace the stirring head 2.

[0029] Furthermore, a connecting seat 15 is fixedly connected to one side of the bracket 13. The interior of the connecting seat 15 is slidably connected to the connecting rod 3. The connecting seat 15 is used to support the sliding block 17 and ensure a stable connection between the sliding block 17 and the annular groove 16.

[0030] Furthermore, the bottom of the connecting seat 15 is provided with an annular groove 16. Inside the annular groove 16, there are two sliding blocks 17 that are fixedly connected to the pulley 4. The annular groove 16 and the sliding blocks 17 are used to limit the pulley 4 and assist the pulley 4 in rotating.

[0031] Furthermore, the controller 18 and the drive motor 14 are remotely connected via wires. The controller 18 is installed in the control room. The controller 18 is configured to remotely control the start and stop of the drive motor 14, as well as control the clockwise or counterclockwise rotation of the output terminal of the drive motor 14 and set the number of clockwise or counterclockwise rotations of the drive motor 14.

[0032] Furthermore, a second slide groove 19 is provided on one side of the bracket 13. A second slider 20, which is fixedly connected to the movable plate 7, is slidably connected inside the slide groove 19. The slide groove 19 and the second slider 20 are used to guide the vertical movement of the movable plate 7 in a straight line and to prevent the movable plate 7 from rotating with the adjusting screw 8 when the adjusting screw 8 rotates.

[0033] Furthermore, the output end of the drive motor 14 is rotatably connected to the bracket 13 via a bearing, and the rotating rod 11 is rotatably connected to a fixing plate 21 via a bearing. The fixing plate 21 is used to support the rotating rod 11.

[0034] Furthermore, the adjusting screw 8 is rotatably connected to two fixing plates 22 that are fixedly connected to the bracket 13 via bearings. The fixing plates 22 are used to support the adjusting screw 8, and together with the bearings, they can restrict the adjusting screw 8 from rotating in a fixed position.

[0035] Brief description of the usage process: When using, put molten iron and desulfurizing agent into the desulfurization tank 1.

[0036] The output end of the drive motor 14 is controlled to rotate by the controller 18. The output end of the drive motor 14 can drive the rotating rod 11 and its surface pulleys 12 and 10 to rotate.

[0037] When pulley 12 rotates, it drives pulley 4 to rotate via belt drive. Pulley 4 then drives connecting rod 3 and stirring head 2 connected to the bottom of connecting rod 3 via slide groove 5 and slider 6 to rotate. The rotation of stirring head 2 can stir the molten iron and desulfurizer inside desulfurization tank 1.

[0038] At the same time, the rotation of pulley 310 will cause the belt drive pulley 29 and its internal adjusting screw 8 to rotate. The rotation of adjusting screw 8 can drive the movable plate 7 to move up or down (if the movable plate 7 moves up, the adjusting screw 8 needs to be rotated counterclockwise; if the movable plate 7 moves up, the adjusting screw 8 needs to be rotated clockwise. Specifically, the rotation direction of the drive motor 14 and the rotation time of different directions can be set by the controller 18).

[0039] When the movable plate 7 moves upward, it will drive the connecting rod 3 and the stirring head 2 upward. After the stirring head 2 is adjusted to the top of the desulfurization tank 1, the drive motor 14 stops rotating and the stirring head 2 is positioned, which makes it convenient for the staff to maintain and replace the stirring head 2.

[0040] The controller 18 times the clockwise and counterclockwise rotation of the drive motor 14.

[0041] The upward and downward heights of the movable plate 7 are controlled to be half the length of the adjusting screw 8 (that is, set the clockwise rotation time of the output end of the drive motor 14, and then set the counterclockwise rotation time of the drive motor 14. After the output end of the drive motor 14 rotates clockwise for the set time, the output end of the drive motor 14 rotates counterclockwise for the set time, and then repeats continuously).

[0042] The stirring head 2 can be driven by the drive motor 14 and the adjusting screw 8 to continuously reciprocate inside the desulfurization tank 1, so that the stirring head 2 can perform stirring work at different positions inside the desulfurization tank 1.

[0043] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A high-sulfur molten iron KR desulfurization device, comprising a desulfurization tank (1), a support frame (13), and a controller (18), characterized in that: The desulfurization tank (1) is equipped with a stirring head (2) inside. A connecting rod (3) is mounted on the top of the stirring head (2) via a flange. A pulley (4) is fitted on the surface of the connecting rod (3). Two sliding grooves (5) are formed on the surface of the connecting rod (3). A slider (6) that is fixedly connected to the pulley (4) is slidably connected inside the sliding groove (5). A movable plate (7) is rotatably connected to the surface of the connecting rod (3) via a bearing. An adjusting screw (8) is threadedly connected inside the movable plate (7). The surface of the adjusting screw (8) is fixedly fitted with a second pulley (9), the second pulley (9) is connected to a third pulley (10) via a belt drive, the inside of the third pulley (10) is fixedly fitted with a rotating rod (11), the surface of the rotating rod (11) is fixedly fitted with a fourth pulley (12) which is connected to the first pulley (4) via a belt drive, and the top of the bracket (13) is equipped with a drive motor (14), the output end of the drive motor (14) is installed with the rotating rod (11) via a coupling.

2. The KR desulfurization device for high-sulfur molten iron according to claim 1, characterized in that: A connecting seat (15) is fixedly connected to one side of the bracket (13), and the interior of the connecting seat (15) is slidably connected to the connecting rod (3).

3. The KR desulfurization device for high-sulfur molten iron according to claim 2, characterized in that: The bottom of the connecting seat (15) is provided with an annular groove (16), and two sliding blocks (17) that are fixedly connected to the pulley (4) are slidably connected inside the annular groove (16).

4. The KR desulfurization device for high-sulfur molten iron according to claim 1, characterized in that: The controller (18) and the drive motor (14) are remotely connected by wires, and the controller (18) is installed in the operating room.

5. The KR desulfurization device for high-sulfur molten iron according to claim 1, characterized in that: The bracket (13) has a second sliding groove (19) on one side. The sliding groove (19) has a second slider (20) that is fixedly connected to the movable plate (7).

6. The KR desulfurization device for high-sulfur molten iron according to claim 1, characterized in that: The output end of the drive motor (14) is rotatably connected to the bracket (13) via a bearing, and the rotating rod (11) is rotatably connected to a fixed plate (21) via a bearing.

7. The KR desulfurization device for high-sulfur molten iron according to claim 1, characterized in that: The adjusting screw (8) is rotatably connected to two fixing plates (22) that are fixedly connected to the bracket (13) via bearings.

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