Debugging device for automatic control system of blast furnace hot blast stove

Abstract

The utility model discloses a blast furnace hot blast stove automatic control system debugging device, which relates to the technical field of debugging devices, and comprises an adjusting box, a driving box and a fixed box, the driving box is rotatably connected to the lower wall surface of the adjusting box, the fixed box is rotatably connected to the outer wall surface of the adjusting box, the fixed box is provided with a smoke pipe positioning hole, and the smoke pipe positioning hole is communicated with the adjusting box. A guide hole is formed in the adjusting box, the input end of a smoke exhaust corrugated pipe is fixedly installed in a smoke pipe positioning hole, a double-end motor drives a storage wire wheel to wind and unwind a steel wire, the steel wire pulls a connecting plate through an output wire wheel and drives a sliding block to slide along the guide hole, then the position of the output end of the smoke exhaust corrugated pipe is adjusted, and smoke is conveyed through the smoke exhaust corrugated pipe. The smoke is prevented from being in direct contact with the assembly, and the problems that according to an existing debugging device, smoke is directly discharged into the adjusting assembly, dust and impurities carried in the smoke fall into a sliding limiting groove and a gear plate, the lifting smoothness of the device is easily affected, blockage is even caused after long-time use, and the sliding clamping phenomenon is caused are solved.

Description

Technical Field

[0001] This utility model relates to the field of debugging device technology, specifically a debugging device for the automatic control system of a blast furnace hot blast stove. Background Technology

[0002] The blast furnace hot blast stove is a core thermal energy device in iron and steel smelting, providing high-temperature hot blast for blast furnace smelting. Used in conjunction with the blast furnace, it improves blast furnace smelting efficiency by preheating air and is a key device for reducing ironmaking energy consumption. Its core working principle is "regenerative heat exchange": first, high-temperature flue gas is generated by burning fuels such as blast furnace gas or coke oven gas, which heats the heat storage medium (mostly checker bricks or spherical heat storage medium) inside the hot blast stove to 1000-1300℃; then, the airflow direction is switched, allowing room temperature air to flow through the high-temperature heat storage medium, absorbing heat and rising... The temperature is raised to 800-1200℃, and then the high-temperature hot air is sent into the blast furnace to provide heat for the reduction of iron ore and the combustion of coke in the blast furnace. Common types include internal combustion, external combustion and top combustion. Among them, the top combustion type is widely used because of its high thermal efficiency (up to 85% or more) and compact structure. During the use of the blast furnace hot blast stove, it needs to be controlled by an automatic control system. However, the blast furnace hot blast stove needs to be debugged before use. When the debugging equipment is connected to different models of blast furnace hot blast stoves, it will face the problem of different air outlet positions, which makes it inconvenient to connect.

[0003] For example, the utility model patent with announcement number CN215713104U discloses a debugging device for the automatic control system of a blast furnace hot blast stove, including an air outlet pipe, an adjustment component, an air inlet pipe, and a stable moving component. The air outlet pipe is threaded to the top side of the adjustment component, and the air inlet pipe is threaded to the bottom side of the adjustment component. The adjustment component is embedded in the stable moving component. This utility model can not only adjust its own height and the angle of its own air outlet pipe through the adjustment component, but also has good sealing performance of the overall ventilation pipeline, which is very convenient for later maintenance and repair. The design of the sliding limit groove and gear plate also prevents the structure from detaching when moving up and down. The stable moving component facilitates the movement of the device and the angle adjustment of the adjustment component. Moreover, the large area of ​​the entire base ensures the stability of the center of gravity. The design of the stable outer shell also makes the switching between moving and stable states more convenient.

[0004] However, because the flue gas is directly discharged into the regulating component, the dust and impurities carried in the flue gas fall into the sliding limit groove and gear plate, which can easily affect the smoothness of the device's lifting. Long-term use may even cause blockage and sliding jamming. In addition, the rigid transmission method of gear meshing is used during lifting. In order to ensure smooth sliding, the meshing part bears the full weight and is subjected to a large load, which makes the noise during the debugging process loud, the operation is unstable, and the service life is short. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a debugging device for the automatic control system of a blast furnace hot blast stove. This device solves the problems of existing devices where flue gas is directly discharged into the regulating components, and dust and impurities carried in the flue gas fall into the sliding limit groove and gear plate, which can easily affect the smoothness of the device's lifting. Over time, this can even cause blockages and lead to sliding jamming. Furthermore, the rigid transmission method using gear meshing during lifting results in a large load on the meshing parts to ensure smooth sliding, leading to high noise during debugging, unstable operation, and a short service life.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a debugging device for an automatic control system of a blast furnace hot blast stove, comprising an adjustment box, a drive box, and a fixed box. The drive box is rotatably connected to the lower wall of the adjustment box, and the fixed box is rotatably connected to the outer wall of the adjustment box. The fixed box is fixedly connected to the drive box. The fixed box has a smoke pipe positioning hole, and the adjustment box has a guide hole. The input end of a flue gas corrugated pipe is fixedly installed in the smoke pipe positioning hole. An output seat ring is fixedly installed on the lower wall of the adjustment box. A transmission box is fixedly installed inside the drive box. An input gear that meshes with the output seat ring is fixedly installed at the output end of the transmission box. A sliding adjustment mechanism is provided in the guide hole. An adjustment structure for the position of the flue gas corrugated pipe; the adjustment structure includes a slider, a pulley fixing seat, and a double-headed motor. The slider is slidably connected in a guide hole and fixedly connected to the output end of the flue gas corrugated pipe. A connecting plate is fixedly installed on the rear wall of the slider. The pulley fixing seat is fixedly installed on the upper wall inside the adjustment box. A guide wheel and two output wire wheels are rotatably connected to the pulley fixing seat. The middle section of the flue gas corrugated pipe rests on the guide wheel. The double-headed motor is fixedly installed on the lower wall inside the adjustment box. Two wire receiving wheels are fixedly installed at the output end of the double-headed motor. Each of the two wire receiving wheels contains a steel wire. The two steel wires are fixed to the upper wall of the connecting plate through the two output wire wheels.

[0007] Preferably, two retraction springs are fixedly installed between the connecting plate and the lower wall of the regulating box, and two damping rods are also fixedly installed between the connecting plate and the lower wall of the regulating box.

[0008] Preferably, the lower wall of the fixed box is fixedly installed with a transition rod for rotating connection with the adjustment box, the inner wall of the fixed box is provided with a slide rail, and the outer wall of the output seat ring is fixedly installed with a sliding plate for sliding connection with the slide rail.

[0009] Preferably, transport wheels are fixedly installed on the lower walls of the regulating box and the fixing box, and two auxiliary handles are fixedly installed on the fixing box.

[0010] Preferably, a planar bearing for reducing the rotational friction between the drive box and the regulating box is fixedly installed on the upper wall surface.

[0011] Preferably, the regulating box has a clearance groove for avoiding the exhaust bellows when rotating.

[0012] Preferably, the edges of the adjusting box and the fixing box are provided with safety chamfers.

[0013] Beneficial effects

[0014] This utility model provides a debugging device for the automatic control system of a blast furnace hot blast stove, which has the following beneficial effects:

[0015] The double-headed motor drives the take-up reel to take in and release the steel wire. The steel wire pulls the connecting plate through the output reel, causing the slider to slide along the guide hole, thereby adjusting the position of the output end of the exhaust bellows. The exhaust bellows delivers the flue gas, avoiding direct contact between the flue gas and the components. This solves the problem in the existing debugging device where the flue gas is directly discharged into the adjustment component, and the dust and impurities carried in the flue gas fall into the sliding limit groove and gear plate, which can easily affect the smoothness of the device's lifting. Long-term use may even cause blockage and lead to sliding jamming.

[0016] The return spring between the connecting plate and the regulating box assists in resetting, and the damping rod slows down the sliding speed. The middle section of the exhaust bellows slides smoothly through the guide wheel, avoiding hard friction. The clearance groove of the regulating box also provides it with room to move and prevents compression. This design avoids the exhaust bellows from being pulled and broken or worn due to excessive speed or uneven force during adjustment, thus extending the service life of the components and ensuring smooth exhaust during commissioning. It solves the problem of existing commissioning devices using a rigid gear transmission method during lifting, which requires the gear part to bear the full weight to ensure smooth sliding, resulting in a large load, high noise during commissioning, unstable operation, and short service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the adjustment structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the output ring structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the fixed box structure of this utility model.

[0021] In the diagram: 1. Adjustment box; 2. Drive box; 3. Fixing box; 4. Smoke pipe positioning hole; 5. Guide hole; 6. Exhaust bellows; 7. Output seat ring; 8. Transmission box; 9. Input gear; 10. Slider; 11. Pulley fixing seat; 12. Dual-head motor; 13. Connecting plate; 14. Guide wheel; 15. Output wire wheel; 16. Wire storage wheel; 17. Steel wire; 18. Retraction spring; 19. Damping rod; 20. Adapter rod; 21. Slide rail; 22. Slide plate; 23. Transport wheel; 24. Auxiliary handle; 25. Surface bearing; 26. Clearance groove. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Please see Figures 1-4 A debugging device for an automatic control system of a blast furnace hot blast stove includes an adjusting box 1, a drive box 2, and a fixed box 3. The drive box 2 is rotatably connected to the lower wall of the adjusting box 1, and the fixed box 3 is rotatably connected to the outer wall of the adjusting box 1. The fixed box 3 is fixedly connected to the drive box 2. The fixed box 3 has a smoke pipe positioning hole 4, and the adjusting box 1 has a guide hole 5. The input end of the exhaust bellows 6 is fixedly installed in the smoke pipe positioning hole 4. An output seat ring 7 is fixedly installed on the lower wall of the adjusting box 1. A transmission box 8 is fixedly installed inside the drive box 2. An input gear 9 that meshes with the output seat ring 7 is fixedly installed at the output end of the transmission box 8. An adjusting structure for adjusting the position of the exhaust bellows 6 is slidably arranged in the guide hole 5. The adjusting structure includes a slider. 10. A pulley fixing seat 11 and a double-headed motor 12 are provided. The slider 10 is slidably connected in the guide hole 5 and fixedly connected to the output end of the exhaust corrugated pipe 6. A connecting plate 13 is fixedly installed on the rear wall of the slider 10. The pulley fixing seat 11 is fixedly installed on the upper wall inside the regulating box 1. A guide wheel 14 and two output wire wheels 15 are rotatably connected to the pulley fixing seat 11. The middle section of the exhaust corrugated pipe 6 rests on the guide wheel 14. The double-headed motor 12 is fixedly installed on the lower wall inside the regulating box 1. Two wire receiving wheels 16 are fixedly installed at the output end of the double-headed motor 12. Each of the two wire receiving wheels 16 contains a steel wire 17. The two steel wires 17 are fixed to the upper wall of the connecting plate 13 through the two output wire wheels 15.

[0024] Please see Figures 2-3 Two retraction springs 18 are fixedly installed between the connecting plate 13 and the lower wall inside the regulating box 1. Two damping rods 19 are also fixedly installed between the connecting plate 13 and the lower wall inside the regulating box 1. In use, the retraction springs 18 can assist the connecting plate 13 in driving the slider 10 to reset after the adjustment structure has completed the position adjustment, ensuring the stability of the position of the exhaust bellows 6. The damping rods 19 can slow down the speed of the slider 10 when it slides, avoiding the exhaust bellows 6 from being violently pulled or collided due to excessive sliding, thus extending the service life of the components.

[0025] Please see Figures 3-4 The lower wall of the fixed box 3 is fixedly equipped with a transition rod 20 for rotating connection with the regulating box 1. The inner wall of the fixed box 3 is provided with a slide rail 21. The outer wall of the output seat ring 7 is fixedly equipped with a sliding plate 22 for sliding connection with the slide rail 21. In use, the transition rod 20 provides stable support for the rotation of the fixed box 3 and the regulating box 1. The cooperation between the slide rail 21 and the sliding plate 22 further restricts the relative movement trajectory of the two, ensuring that the fixed box will not deviate when rotating around the regulating box, thus improving the overall structural stability of the device.

[0026] Please see Figure 2 Transport wheels 23 are fixedly installed on the lower walls of the regulating box 1 and the fixed box 3. Two auxiliary handles 24 are fixedly installed on the fixed box 3. When in use, the transport wheels 23 make it convenient for the staff to push the device to move on the blast furnace hot blast stove site to adapt to the needs of different debugging positions; the auxiliary handles 24 provide a force point for pushing the device or adjusting the angle of the fixed box, improving the ease of operation.

[0027] Please see Figure 2 A flat bearing 25 is fixedly installed on the upper wall of the drive box 2 to reduce the rotational friction between the drive box 2 and the regulating box 1. In use, the flat bearing 25 can effectively reduce the rotational frictional resistance between the drive box 2 and the regulating box 1, making the drive box 2 drive the output seat ring 7 to rotate more smoothly through the input gear 9, reducing mechanical wear, and ensuring the accuracy of the rotational adjustment of the regulating box.

[0028] Please see Figure 3 The regulating box 1 is provided with a clearance groove 26 for avoiding the exhaust bellows 6 when rotating. In use, the clearance groove 26 can provide sufficient space for the exhaust bellows 6 to move during the rotation of the regulating box 1 around the drive box 2, so as to avoid the exhaust bellows 6 being squeezed and worn by the inner wall of the regulating box 1, ensuring the smoothness of the exhaust channel and not affecting the exhaust function during the commissioning process.

[0029] Please see Figure 1 The edges of the regulating box 1 and the fixed box 3 are provided with safety chamfers. When in use, the safety chamfers can remove the sharp edges of the regulating box 1 and the fixed box 3, preventing workers from being scratched when installing, debugging or moving the device, and improving the safety of the device during use.

[0030] Specifically, during preparation, the staff holds the two auxiliary handles 24 on the fixed box 3 with both hands and applies a pushing force to drive the fixed box 3 and the adjustment box 1 and drive box 2 connected to it to move synchronously. The transport wheels 23 on the lower wall of the adjustment box 1 and the transport wheels 23 on the lower wall of the fixed box 3 roll simultaneously to reduce the frictional resistance between the device and the ground. After the device moves to the target debugging position, the pushing is stopped and the self-locking device of the transport wheels 23 is activated to keep the device stationary and stably parked in the designated area.

[0031] During angle adjustment, the transmission box 8 inside the drive box 2 is activated, and the transmission box 8 drives the input gear 9 at the output end to rotate. The input gear 9 meshes with the output seat ring 7 on the lower wall of the adjustment box 1. As the input gear 9 rotates, the output seat ring 7 drives the adjustment box 1 to rotate around the plane bearing 25 on the upper wall of the drive box 2 (the plane bearing 25 can reduce the rotational friction between the adjustment box 1 and the drive box 2, making the adjustment process smoother). When the adjustment box 1 rotates, it rotates around the fixed box 3 through the adapter rod 20, and at the same time, the sliding plate 22 on the outer wall of the output seat ring 7 moves along the fixed box 3. The slide rail 21 on the inner wall slides, and the cooperation between the slide rail 21 and the sliding plate 22 restricts the relative movement trajectory of the fixed box 3 and the regulating box 1, preventing them from deviating when rotating. During this process, the clearance groove 26 opened on the regulating box 1 provides space for the flue gas corrugated pipe 6 to move, preventing the flue gas corrugated pipe 6 from being squeezed and worn when the regulating box 1 rotates. After the operator observes the rotation angle of the regulating box 1 and adjusts it to the angle that matches the debugging interface of the blast furnace hot blast stove, the transmission box 8 is closed, the input gear 9 stops rotating, and the positions of the output seat ring 7 and the regulating box 1 are fixed.

[0032] During height adjustment, the dual-head motor 12 on the lower wall of the adjustment box 1 is activated. The two output ends of the dual-head motor 12 drive the two wire-receiving wheels 16 to rotate. If it is necessary to move the output end of the exhaust corrugated pipe 6 closer to the guide wheel 14, the wire-receiving wheels 16 are controlled to wind up the steel wire 17. The two steel wires 17 are guided by the two output wheels 15, pulling the connecting plate 13 upward. The connecting plate 13 drives the slider 10 fixed on the rear wall to slide along the guide hole 5 opened in the adjustment box 1. The slider 10 simultaneously pulls the output end of the exhaust corrugated pipe 6 to move. The middle section of the exhaust corrugated pipe 6 slides on the guide wheel 14. The guide wheel 14 rotates with the movement of the exhaust corrugated pipe 6, reducing the friction between them. During this process, the two retraction springs 18 between the connecting plate 13 and the lower wall of the adjustment box 1 are stretched. The damping rod 19 extends synchronously, slowing down the sliding speed of the connecting plate 13 and the slider 10, preventing the flue gas corrugated pipe 6 from being violently pulled due to excessive sliding speed. If it is necessary to move the output end of the flue gas corrugated pipe 6 away from the guide wheel 14, the double-headed motor 12 is controlled to rotate in the opposite direction, the wire receiving wheel 16 releases the steel wire 17, the return spring 18 releases the elastic force, pulling the connecting plate 13 downward, and the slider 10 slides in the opposite direction along the guide hole 5 with the connecting plate 13, driving the output end of the flue gas corrugated pipe 6 to reset. The damping rod 19 retracts synchronously to ensure that the slider 10 slides smoothly. After the output end of the flue gas corrugated pipe 6 is adjusted to the position of precise docking with the flue gas interface of the blast furnace hot blast stove, the double-headed motor 12 is turned off, the wire receiving wheel 16 stops rotating, the steel wire 17 remains taut, and the positions of the slider 10 and the flue gas corrugated pipe 6 are fixed.

[0033] After the work is completed, first start the dual-head motor 12 to control the take-up reel 16 to release or reel in the steel wire 17, and reset the output ends of the slider 10 and the exhaust bellows 6 to their initial positions. Then turn off the dual-head motor 12. Start the transmission box 8 to control the input gear 9 to rotate in the opposite direction, driving the output seat ring 7 and the adjustment box 1 to rotate in the opposite direction on the plane bearing 25 until the adjustment box 1 and the fixed box 3 return to their initial angles. Then turn off the transmission box 8. The staff will hold the two auxiliary handles 24 again and push the device to the storage area via the transport wheel 23 to complete the component reset and device storage of the entire debugging process.

[0034] 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. A debugging device for an automatic control system of a blast furnace hot blast stove, comprising an adjustment box (1), a drive box (2), and a fixed box (3), wherein the drive box (2) is rotatably connected to the lower wall of the adjustment box (1), the fixed box (3) is rotatably connected to the outer wall of the adjustment box (1), the fixed box (3) is fixedly connected to the drive box (2), the fixed box (3) is provided with a smoke pipe positioning hole (4), and the adjustment box (1) is provided with a guide hole (5), characterized in that, The input end of the exhaust bellows (6) is fixedly installed in the smoke pipe positioning hole (4), the output seat ring (7) is fixedly installed on the lower wall of the regulating box (1), the transmission box (8) is fixedly installed inside the drive box (2), the output end of the transmission box (8) is fixedly installed with an input gear (9) that meshes with the output seat ring (7), and the guide hole (5) is slidably provided with an adjustment structure for adjusting the position of the exhaust bellows (6); The adjustment structure includes a slider (10), a pulley fixing seat (11), and a double-headed motor (12). The slider (10) is slidably connected in the guide hole (5) and fixedly connected to the output end of the exhaust corrugated pipe (6). A connecting plate (13) is fixedly installed on the rear wall of the slider (10). The pulley fixing seat (11) is fixedly installed on the upper wall inside the adjustment box (1). A guide wheel (14) and two output wire wheels (15) are rotatably connected on the pulley fixing seat (11). The middle section of the exhaust corrugated pipe (6) rests on the guide wheel (14). The double-headed motor (12) is fixedly installed on the lower wall inside the adjustment box (1). Two wire receiving wheels (16) are fixedly installed on the output end of the double-headed motor (12). Steel wires (17) are respectively stored in the two wire receiving wheels (16). The two steel wires (17) are respectively fixed to the upper wall of the connecting plate (13) through the two output wire wheels (15).

2. The debugging device for the automatic control system of a blast furnace hot blast stove according to claim 1, characterized in that, Two retraction springs (18) are fixedly installed between the connecting plate (13) and the lower wall inside the regulating box (1), and two damping rods (19) are also fixedly installed between the connecting plate (13) and the lower wall inside the regulating box (1).

3. The debugging device for the automatic control system of a blast furnace hot blast stove according to claim 1, characterized in that, The lower wall of the fixed box (3) is fixedly installed with a transition rod (20) for rotating connection with the adjustment box (1). The inner wall of the fixed box (3) is provided with a slide rail (21). The outer wall of the output seat ring (7) is fixedly installed with a sliding plate (22) for sliding connection with the slide rail (21).

4. The debugging device for the automatic control system of a blast furnace hot blast stove according to claim 1, characterized in that, Transport wheels (23) are fixedly installed on the lower wall of the regulating box (1) and the fixed box (3), and two auxiliary handles (24) are fixedly installed on the fixed box (3).

5. The debugging device for the automatic control system of a blast furnace hot blast stove according to claim 4, characterized in that, The upper wall of the drive box (2) is fixedly equipped with a flat bearing (25) for reducing the rotational friction with the regulating box (1).

6. The debugging device for the automatic control system of a blast furnace hot blast stove according to claim 5, characterized in that, The regulating box (1) has a clearance groove (26) for avoiding the exhaust bellows (6) when rotating.

7. The debugging device for the automatic control system of a blast furnace hot blast stove according to claim 5, characterized in that, The edges of the regulating box (1) and the fixing box (3) are provided with safety chamfers.

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