A burn-through device suitable for blast furnace iron troughs
By designing a burn-through device suitable for blast furnace iron troughs, and using an electric motor to drive the oxygen-burning tube to rotate and advance, the safety hazards and uneven hole problems of manual burn-through were solved, achieving efficient and safe burn-through of iron troughs.
Patent Information
- Application Number
- CN202522385829.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-11
AI Technical Summary
In blast furnace ironmaking, manually burning through iron troughs poses safety hazards, is labor-intensive, and results in uneven hole sizes, affecting subsequent sealing and venting.
A burn-through device comprising positioning, rotation, and forward movement sections was designed. The device utilizes a motor to drive the oxygen burning tube to rotate and move forward, while a positioning mechanism ensures accurate alignment and uniform burn-through.
It reduces the labor intensity of workers, improves the efficiency of burn-through conduction, and ensures the uniformity of the holes, facilitating subsequent operations.
Smart Images
Figure CN224942638U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a burn-through device, and more particularly to a device capable of burning through and connecting the blast furnace iron trough, belonging to the technical field of iron trough connection equipment. Background Technology
[0002] In blast furnace ironmaking, the work in front of the furnace is a crucial link in the normal operation of the blast furnace. The main tasks of this work are to ensure timely and complete removal of slag and iron, while maintaining the furnace equipment and the mud lining of the tapping trough and taphole. In actual production, accidents affecting normal blast furnace operation due to the maintenance and repair of the tapping trough, taphole mud lining, and small pits are common, increasing labor intensity and the probability of burns. Damage to the tapping trough is mainly caused by the repeated and frequent scouring and abrasion of the working lining by high-temperature molten iron and slag. The corrosion and harsh working conditions are related to the current method of burning through the blast furnace trough. Currently, the burning through operation is done manually. Workers hold one end of the oxygen-burning pipe and insert the other end into the trough to blow oxygen and melt it, thus burning through the solidified part of the trough and making it open. During this process, workers stand in front of the trough, which poses a safety hazard and is labor-intensive. Moreover, the size of the holes created by manual burning is unpredictable and uneven, which affects subsequent sealing and drainage. Therefore, a device that can evenly burn through and open the blast furnace trough is needed. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a burn-through device suitable for blast furnace iron troughs. It can not only reduce the labor intensity of workers, but also improve the burn-through conduction efficiency of blast furnace iron troughs.
[0004] The problem described in this utility model is solved by the following technical solution: A burn-through device suitable for blast furnace iron troughs includes a positioning part, a long plate, a rotating part, a forward moving part, and a front baffle; the positioning part is disposed on the side wall of the long plate; the rotating part is disposed on the top surface of the long plate; the forward moving part is disposed on the rotating part; and the front baffle is disposed on the end face of the long plate near the blast furnace iron trough.
[0005] The aforementioned burn-through device for blast furnace iron troughs includes a rotating part comprising a front collar, a rear collar, a straight cylinder, a first motor, a driving gear, and a driven gear ring. Both the front and rear collars are mounted on the top surface of a long plate via supports. A limiting strip is provided on the inner wall of both the front and rear collars, and limiting grooves are provided at both ends of the outer wall of the straight cylinder, with the limiting grooves at both ends engaging with the limiting strips on the inner walls of the front and rear collars. A driven gear ring is provided at the end of the outer wall of the straight cylinder furthest from the blast furnace iron trough. The first motor is mounted on the long plate, and a driving gear is mounted on its output shaft, meshing with the driven gear ring for transmission.
[0006] The above-described burn-through device for blast furnace iron troughs includes a cylindrical cylinder with a radially arranged strip-shaped hole inside, the length of which is equal to the radius of the cylinder. A pressure plate is installed inside the strip-shaped hole, and a spring is positioned between the pressure plate and the end face of the strip-shaped hole near the axis of the cylinder. A threaded hole is provided on the side wall of the cylinder, and a screw passes through this hole into the strip-shaped hole. An oxygen-burning pipe passes through the strip-shaped hole, and the end of the screw presses against the outer wall of the oxygen-burning pipe inside the hole. The oxygen-burning pipe is located between the screw and the pressure plate. A through hole is provided on the front baffle, the diameter of which is equal to the diameter of the cylinder, and the axis of the through hole coincides with the axis of the cylinder. The oxygen-burning pipe passes through the through hole of the front baffle.
[0007] The above-described burn-through device for blast furnace iron troughs includes a forward-moving section comprising a clamping mechanism and a battery. Two clamping mechanisms are provided, each located on the end face of a straight cylinder away from the front baffle, with the two clamping mechanisms situated on opposite sides of a strip-shaped hole. The battery is located on the end face of the straight cylinder away from the front baffle. Each clamping mechanism includes a first support plate, a second support plate, a clamping roller, and a second motor. Both the first and second support plates are located at the ends of the straight cylinder, and bearings are provided on the end faces of the first and second support plates that are close to each other. The inner walls of the inner rings of the bearings on both sides are connected to the two ends of the clamping roller. The second motor is located on the side wall of the first support plate, and its output shaft passes through the first support plate and connects to the end of the clamping roller. The second motor is connected to the battery via a wire. Fluororubber pads are provided on the outer wall of the clamping roller, and the oxygen-burning tube is clamped between the fluororubber pads on the outer walls of the clamping rollers on both sides.
[0008] The above-mentioned burn-through device for blast furnace iron troughs includes a positioning part comprising four positioning mechanisms, which are respectively positioned at the four corners of the long plate. Each positioning mechanism includes a first support rod, a second support rod, a long threaded rod, and a base. One end of the first support rod is connected to one end of the second support rod, and the end of the first support rod is positioned at the corner of the long plate via a bracket. The end of the second support rod has a threaded hole, through which the long threaded rod passes. A handle is provided at the top of the long threaded rod, and a base is provided at the bottom of the long threaded rod.
[0009] This invention ensures that the oxygen-burning tube is aligned with the iron groove through the positioning part, guaranteeing that the oxygen-burning tube can reliably align with the iron groove for melting treatment during its subsequent advancement; the rotating part drives the oxygen-burning tube to rotate, thereby ensuring that the outline of the burned hole is uniform; and the advancing part ensures that the oxygen-burning tube advances evenly to melt the iron groove. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention; Figure 2 This is a partially enlarged structural diagram of component A of this utility model; Figure 3 This is a schematic diagram of the second three-dimensional structure of the present invention; Figure 4 This is a partially enlarged structural diagram of the present invention, B.
[0011] The list of labels in the diagram is as follows: 1. Long plate, 2. Front collar, 3. Rear collar, 4. Straight cylinder, 5. First motor, 6. Driving gear, 7. Driven gear ring, 8. Oxygen-burning tube, 9. Pressure plate, 10. Front baffle, 11. Battery, 12. First support plate, 13. Second support plate, 14. Clamping roller, 15. Second motor, 16. First support rod, 17. Second support rod, 18. Long threaded rod, 19. Base. Detailed Implementation
[0012] See Figure 1 , 2 3 and Figure 4This utility model includes a positioning part, a long plate 1, a rotating part, a forward moving part, and a front baffle 10. The positioning part is disposed on the side wall of the long plate 1. The function of the positioning part is to ensure that the oxygen-burning tube 8 can be aligned with the iron trough. The rotating part is disposed on the top surface of the long plate 1. The rotating part can drive the oxygen-burning tube 8 to rotate circumferentially to burn through the iron trough, ensuring that the outline of the burned hole is clear, which facilitates the smooth flow of molten iron. The forward moving part is disposed on the rotating part. The forward moving part can drive the oxygen-burning tube 8 to gradually move forward in the iron trough, thereby burning through the iron trough. The front baffle 10 is disposed on the end face of the long plate 1 near the blast furnace iron trough. The function of the front baffle 10 is to prevent some molten iron from splashing onto the device and reduce the damage caused by high-temperature molten iron.
[0013] The rotating part includes a front collar 2, a rear collar 3, a straight cylinder 4, a first motor 5, a driving gear 6, and a driven gear ring 7. The front collar 2 and the rear collar 3 are both mounted on the top surface of the long plate 1 via brackets. A limiting strip is provided on the inner wall of both the front collar 2 and the rear collar 3. Limiting grooves are provided at both ends of the outer wall of the straight cylinder 4, and these grooves engage with the limiting strips on the inner walls of the front collar 2 and the rear collar 3. Under the support and limiting influence of the front collar 2 and the rear collar 3, the straight cylinder 4 can rotate in place. This causes the oxygen-burning tube 8 to rotate; a driven gear ring 7 is provided at the end of the outer wall of the straight cylinder 4 away from the blast furnace iron trough; the first motor 5 is mounted on the long plate 1, and a driving gear 6 is mounted on its output shaft, which meshes with the driven gear ring 7 for transmission; the first motor 5 can drive the driving gear 6 to rotate, which in turn drives the driven gear 7 to rotate, and finally drives the straight cylinder 4 to rotate, and the rotating straight cylinder 4 drives the oxygen-burning tube 8 to rotate circumferentially, and the oxygen-burning tube 8 performs uniform melting treatment on the iron trough during the rotation process.
[0014] The straight cylinder 4 has a strip-shaped hole arranged radially inside, and the length of the strip-shaped hole in the radial direction of the straight cylinder 4 is equal to the radius of the straight cylinder 4; a pressure plate 9 is arranged inside the strip-shaped hole, and a spring is arranged between the pressure plate 9 and the end face of the strip-shaped hole near the axis of the straight cylinder 4; a threaded hole is arranged on the side wall of the straight cylinder 4, and a screw passes through the threaded hole on the side wall of the straight cylinder 4 and enters the strip-shaped hole of the straight cylinder 4; the oxygen-burning tube 8 passes through the strip-shaped hole of the straight cylinder 4, and the end of the screw presses against the outer wall of the oxygen-burning tube 8 inside the strip-shaped hole of the straight cylinder 4; The oxygen-burning tube 8 is located between the screw and the pressure plate 9; the pressure plate 9 provides an outward thrust to the oxygen-burning tube 8, and the screw is used to limit the position of the oxygen-burning tube 8. Therefore, the position of the oxygen-burning tube 8 can be fixed by the cooperation of the pressure plate 9 and the screw, so that it moves within a set circumferential trajectory when rotating. The diameter of the hole in the iron groove is determined by limiting the rotation trajectory of the oxygen-burning tube 8. The front baffle 10 is provided with a through hole, and the diameter of the through hole is equal to the diameter of the straight cylinder 4, and the axis of the through hole coincides with the axis of the straight cylinder 4. The oxygen-burning tube 8 passes through the through hole of the front baffle 10.
[0015] The forward section includes a clamping mechanism and a battery 11; there are two clamping mechanisms, both of which are located on the end face of the straight cylinder 4 away from the front baffle 10, and the two clamping mechanisms are respectively located on both sides of the strip-shaped hole; the battery 11 is located on the end face of the straight cylinder 4 away from the front baffle 10; the battery 11 is used to power the second motor 15 in the clamping mechanism; ensuring that the second motor 15 can still receive reliable power during rotation; the clamping mechanism includes a first support plate 12, a second support plate 13, a clamping roller 14, and a second motor 15; the first support plate 12 and the second support plate 13 are both located at the end of the straight cylinder 4, and the first support plate 12 and the second support plate 13 are ... Bearings are provided on the end faces of the support plates 13 that are close to each other. The inner walls of the inner rings of the bearings on both sides are connected to the two ends of the clamping rollers 14 respectively. The clamping rollers 14 can rotate between the two support plates. The rotation of the clamping rollers is driven by the second motor 15. The two opposing rotating clamping rollers 14 drive the oxygen-burning tube 8 in the middle to move forward. The second motor 15 is located on the side wall of the first support plate 12, and its output shaft passes through the first support plate 12 and is connected to the end of the clamping rollers 14. The second motor 15 is connected to the battery 11 through a wire. Fluororubber pads are provided on the outer wall of the clamping rollers 14. The oxygen-burning tube 8 is clamped between the fluororubber pads on the outer walls of the clamping rollers 14 on both sides.
[0016] The positioning part includes four positioning mechanisms, which are respectively located at the four corners of the long plate 1. By adjusting the positioning mechanisms, the oxygen burning tube 8 can be aligned with the iron groove, ensuring that the oxygen burning tube 8 can be aligned with the iron groove and proceed to melt.
[0017] The positioning mechanism includes a first support rod 16, a second support rod 17, a long threaded rod 18, and a base 19. One end of the first support rod 16 is connected to one end of the second support rod 17, and the end of the first support rod 16 is set at the corner of the long plate 1 by a bracket. The end of the second support rod 17 is provided with a threaded hole, and the long threaded rod passes through the threaded hole of the second support rod 17. The top end of the long threaded rod is provided with a handle, and the bottom end of the long threaded rod is provided with a base 19. By rotating the four long threaded rods 18, the tilt angle and position of the long plate 1 are adjusted, and the purpose of adjusting the position and orientation of the oxygen combustion tube 8 is finally achieved.
[0018] Operating principle: Place this device on the foundation in front of the iron trench, adjust the position of the straight cylinder 4 to align with the pre-drilled position of the iron trench, then maintain the position of the straight cylinder 4 and adjust each long threaded rod 18 so that the base 19 touches the ground; at this time, the straight cylinder 4 is aligned with the front side of the preset burn-through position of the iron trench; then insert the oxygen-burning tube into the strip-shaped hole of the straight cylinder 4, adjust the position of the screw to adjust the position of the oxygen-burning tube 8, so that the distance between the axis of the oxygen-burning tube 8 and the axis of the straight cylinder 4 is equal to the approximate diameter of the preset burn-through hole in the iron trench, which makes the burn-through... The diameter of the hole is made as regular and uniform as possible. The oxygen-burning tube 8 is pushed to the front of the iron trough and then ignited to begin the melting operation on the iron trough. During this process, the first motor 5 drives the straight cylinder 4 to rotate 360 degrees forward and then 360 degrees backward. This is repeated so that the flame at the head of the oxygen-burning tube 8 moves in a circle and forward to melt the iron trough. The second motor 15 drives the clamping roller 14 to rotate slowly, which drives the oxygen-burning tube 8 to move forward slowly. Until the oxygen-burning tube 8 burns through the iron trough, the first motor 5 is turned off, and the second motor reverses to pull out the oxygen-burning tube 8. Then the device is removed.
Claims
1. A burn-through device suitable for blast furnace iron troughs, characterized in that: It includes a positioning part, a long plate (1), a rotating part, a forward part and a front baffle (10); the positioning part is disposed on the side wall of the long plate (1); the rotating part is disposed on the top surface of the long plate (1); the forward part is disposed on the rotating part; the front baffle (10) is disposed on the end surface of the long plate (1) near the blast furnace trough.
2. The burn-through device for blast furnace iron troughs according to claim 1, characterized in that: The rotating part includes a front collar (2), a rear collar (3), a straight cylinder (4), a first motor (5), a driving gear (6), and a driven gear ring (7); the front collar (2) and the rear collar (3) are both mounted on the top surface of the long plate (1) by a bracket; the inner walls of the front collar (2) and the rear collar (3) are each provided with a ring of limiting strips, and the two ends of the outer wall of the straight cylinder (4) are provided with limiting grooves, and the limiting grooves at both ends of the straight cylinder (4) are engaged with the limiting strips on the inner walls of the front collar (2) and the rear collar (3); the end of the outer wall of the straight cylinder (4) away from the blast furnace iron trough is provided with a driven gear ring (7); the first motor (5) is mounted on the long plate (1), and its output shaft is provided with a driving gear (6), which meshes with the driven gear ring (7) for transmission.
3. The burn-through device for blast furnace iron troughs according to claim 2, characterized in that: The straight cylinder (4) has a strip-shaped hole arranged in its radial direction, and the length of the strip-shaped hole in the radial direction of the straight cylinder (4) is equal to the radius of the straight cylinder (4); a pressure plate (9) is arranged in the strip-shaped hole, and a spring is arranged between the pressure plate (9) and the end face of the strip-shaped hole near the axis of the straight cylinder (4); a threaded hole is arranged on the side wall of the straight cylinder (4), and a screw passes through the threaded hole on the side wall of the straight cylinder (4) and enters the straight cylinder (4). The oxygen tube (8) passes through the strip-shaped hole of the straight cylinder (4), and the end of the screw presses against the outer wall of the oxygen tube (8) inside the strip-shaped hole of the straight cylinder (4); the oxygen tube (8) is located between the screw and the pressure plate (9); the front baffle (10) is provided with a through hole, and the diameter of the through hole is equal to the diameter of the straight cylinder (4), and the axis of the through hole coincides with the axis of the straight cylinder (4), and the oxygen tube (8) passes through the through hole of the front baffle (10).
4. The burn-through device for blast furnace iron troughs according to claim 3, characterized in that: The forward section includes a clamping mechanism and a battery (11); there are two clamping mechanisms, both of which are located on the end face of the straight cylinder (4) away from the front baffle (10), and the two clamping mechanisms are located on both sides of the strip hole; the battery (11) is located on the end face of the straight cylinder (4) away from the front baffle (10); the clamping mechanism includes a first support plate (12), a second support plate (13), a clamping roller (14), and a second motor (15); the first support plate (12) and the second support plate (13) are both located at the end of the straight cylinder (4), and the first... Bearings are provided on the end faces of the support plate (12) and the second support plate (13) that are close to each other. The inner walls of the inner rings of the bearings on both sides are connected to the two ends of the clamping roller (14). The second motor (15) is located on the side wall of the first support plate (12), and its output shaft passes through the first support plate (12) and is connected to the end of the clamping roller (14). The second motor (15) is connected to the storage battery (11) through a wire. Fluororubber pads are provided on the outer wall of the clamping roller (14), and the oxygen-burning tube (8) is clamped between the fluororubber pads on the outer walls of the clamping rollers (14) on both sides.
5. The burn-through device for blast furnace iron troughs according to claim 4, characterized in that: The positioning part includes four positioning mechanisms, which are respectively set at the four corners of the long plate (1); the positioning mechanism includes a first support rod (16), a second support rod (17), a long threaded rod (18), and a base (19); one end of the first support rod (16) is connected to one end of the second support rod (17), and the end of the first support rod (16) is set at the corner of the long plate (1) through a bracket, and the end of the second support rod (17) is provided with a threaded hole, and the long threaded rod passes through the threaded hole of the second support rod (17); the top of the long threaded rod is provided with a handle, and the bottom of the long threaded rod is provided with a base (19).