Burning-through device suitable for blast furnace tap hole

Abstract

The utility model discloses a burning through device suitable for a blast furnace tap hole. The burning through device comprises a displacement part, an inclined part, a sliding part, a clamping part and a sealing part, the inclined part is arranged on the displacement part; the sliding part and the sealing part are arranged on the inclined part; the clamping part is arranged on the sliding part, and the oxygen lance is clamped on the clamping part. According to the utility model, the burn-through conduction efficiency of the tap hole is improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to a burn-through device, in particular to a device capable of burn-through treatment for solidified molten iron in a blast furnace tapping hole, belonging to the technical field of tapping hole burn-through equipment. Background Art

[0002] In the high-intensity smelting production of modern iron and steel enterprises, it is inevitable to have some unplanned blast furnace outages and furnace cooling accidents, as well as several faults that may occur in the process of blast furnace ironmaking such as hearth freezing; among them, hearth freezing refers to the phenomenon that the hearth temperature drops significantly, and the slag and molten iron lose fluidity and cannot discharge from the tapping hole by themselves; hearth freezing causes great losses to production, and its treatment also requires a large amount of manpower and material resources; when the freezing is relatively light, molten iron can still flow out of the tapping hole, the slag discharge is very small, and the temperature of the slag and molten iron is very low; when the freezing is severe, the tapping hole is blocked; the molten iron solidifies at the tapping hole. In order to conduct the tapping hole, the current method is to manually hold an oxygen lance and burn through it manually. This process is relatively dangerous. The behavior of the staff approaching the tapping hole and holding the oxygen lance to burn through the tapping hole is highly dangerous, and the burn-through time is relatively long, which is a great test for the physical strength of the staff; therefore, a burn-through device is needed, which is required to assist the staff in burn-through conduction treatment of the tapping hole where molten iron solidifies. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a burn-through device suitable for a blast furnace tapping hole, which can not only reduce the labor intensity of the staff, but also improve the burn-through conduction efficiency of the tapping hole.

[0004] The problems of the utility model are solved by the following technical solutions:

[0005] A burn-through device suitable for a blast furnace tapping hole includes a displacement part, an inclination part, a sliding part, a clamping part and a sealing part; the inclination part is arranged on the displacement part; the sliding part and the sealing part are both arranged on the inclination part; the clamping part is arranged on the sliding part, and the oxygen lance is clamped on the clamping part.

[0006] For the above burn-through device suitable for a blast furnace tapping hole, the displacement part includes a bottom plate, a lifting plate, a first hydraulic cylinder and guide rods; universal wheels are arranged at the four corners of the lower end face of the bottom plate; guide rods are arranged at the four corners of the upper end face of the bottom plate; guide holes are arranged at the four corners of the lifting plate, and guide rods are respectively inserted into the guide holes; the housing of the first hydraulic cylinder is arranged at the central position of the upper end face of the bottom plate, and the end of its piston rod is connected to the central position of the lower end face of the lifting plate.

[0007] The above-mentioned burner device applicable to the blast furnace tapping hole, wherein the inclined part includes a second hydraulic cylinder, a flap and a vertical plate; one end of the top surface of the lifting plate is provided with a hinge seat, and the other end of the top surface of the lifting plate is provided with a vertical plate; both ends of the bottom surface of the flap are provided with hinge seats; the housing of the second hydraulic cylinder is hingedly connected with the hinge seat at the top of the lifting plate, the end of the piston rod of the second hydraulic cylinder is hingedly connected with the hinge seat at one end of the bottom surface of the flap to form a hinged connection structure, and the hinge seat at the other end of the bottom surface of the flap is hingedly connected with the top end of the vertical plate to form a hinged connection structure.

[0008] The above-mentioned burner device applicable to the blast furnace tapping hole, wherein the sliding part includes a third hydraulic cylinder and a long slide plate; the third hydraulic cylinder is arranged on the top surface of the flap, and the axis line of the piston rod of the third hydraulic cylinder is parallel to the length direction line of the flap; a chute is arranged on the side wall of the long slide plate, a slide rail is arranged on the side wall of the flap, and the chute on the side wall of the long slide plate is slidably connected with the slide rail on the side wall of the flap; the length direction line of the long slide plate is parallel to the axis line of the piston rod of the third hydraulic cylinder.

[0009] The above-mentioned burner device applicable to the blast furnace tapping hole, wherein the clamping part includes two clamping mechanisms, and the two clamping mechanisms are symmetrically arranged at both ends of the end surface of the long slide plate away from the flap; each clamping mechanism includes an intermediate plate, an upper clamping plate, a lower clamping plate and a bolt; the intermediate plate is arranged at the end of the long slide plate; the upper clamping plate and the lower clamping plate are respectively arranged at the top and bottom of the end surface of the intermediate plate away from the long slide plate; threaded holes are arranged at one ends of the upper clamping plate and the lower clamping plate away from the intermediate plate, and the bolt passes through the threaded holes of the upper clamping plate and the lower clamping plate, and a nut is arranged at one end of the bolt; the oxygen lance is clamped between the upper clamping plate and the lower clamping plate.

[0010] The above-mentioned burner device applicable to the blast furnace tapping hole, wherein the sealing part includes a fourth hydraulic cylinder, a circular ring and a bell mouth; the fourth hydraulic cylinder is arranged on the top surface of the flap, and the axis line of its piston rod is parallel to the axis line of the piston rod of the third hydraulic cylinder; the end of the piston rod of the fourth hydraulic cylinder is connected with the circular ring; the circular ring is sleeved on the outer wall of the oxygen lance; the bell mouth is arranged on the end surface of the circular ring away from the fourth hydraulic cylinder, the diameter of the end of the bell mouth connected with the circular ring is larger than the diameter of the end of the bell mouth away from the circular ring, and the oxygen lance passes through the bell mouth; the inner diameter of the end of the bell mouth away from the circular ring is consistent with the outer diameter of the oxygen lance.

[0011] The utility model drives the rest parts to move beside the tapping hole through the displacement part, thereby facilitating the operation; the oxygen lance can be aligned with the drilling initially drilled by the taphole drill in the tapping hole through the inclined part; the oxygen lance is effectively clamped through the clamping part, and the oxygen lance is driven by the sliding part to enter the tapping hole drilling for burning through operation, and the oxygen lance is withdrawn in time after burning through; the gap between the oxygen lance and the tapping hole drilling is sealed through the sealing part, so as to ensure the full operation of the oxygen lance as much as possible. Description of the Drawings

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the utility model.

[0013] The list of each label in the figure is as follows: 1. bottom plate, 2. lifting plate, 3. first hydraulic cylinder, 4. guide rod, 5. second hydraulic cylinder, 6. tipping plate, 7. vertical plate, 8. third hydraulic cylinder, 9. long sliding plate, 10. upper clamping plate, 11. lower clamping plate, 12. fourth hydraulic cylinder, 13. circular ring, 14. horn hopper, 15. oxygen lance. Specific embodiments

[0014] Refer to Figure 1 , the utility model includes a displacement part, an inclination part, a sliding part, a clamping part and a sealing part; the inclination part is arranged on the displacement part; the inclination part can adjust the inclination angle of the oxygen lance, so as to ensure that it can be aligned with the drilled hole initially turned out by the taphole drill in the taphole. The reason why the taphole drill cannot completely drill through is that when the molten iron solidifies in the taphole, the taphole drill can only drill through the clay gun part, and the solidified molten iron cannot be drilled through by the taphole drill and can only be burned through by the oxygen lance; the sliding part and the sealing part are both arranged on the inclination part; the sliding part is used to drive the oxygen lance to extend into or slide out of the drilled hole of the taphole, so as to drive the oxygen lance to move to the end of the drilled hole to carry out melting treatment on the solidified molten iron; the sealing part seals the gap between the oxygen lance and the end of the drilled hole to ensure that the oxygen lance can smoothly carry out the melting operation; the clamping part is arranged on the sliding part, and the oxygen lance 15 is clamped on the clamping part.

[0015] The displacement part includes a bottom plate 1, a lifting plate 2, a first hydraulic cylinder 3 and a guide rod 4; universal wheels are arranged at the four corners of the lower end surface of the bottom plate 1; through the universal wheels, the displacement part can be displaced to the platform beside the taphole; guide rods 4 are arranged at the four corners of the upper end surface of the bottom plate 1; guide holes are arranged at the four corners of the lifting plate 2, and guide rods 4 are respectively arranged in the guide holes; the guide rods 4 provide a guiding function for the lifting of the lifting plate 2; the shell of the first hydraulic cylinder 3 is arranged at the central position of the upper end surface of the bottom plate 1, and the end of its piston rod is connected to the central position of the lower end surface of the lifting plate 2; the first hydraulic cylinder 3 is used to drive the lifting plate 2 to vertically lift and lower.

[0016] The inclined part includes a second hydraulic cylinder 5, a tipping plate 6 and a vertical plate 7; one end of the top surface of the lifting plate 2 is provided with a hinge seat, and the other end of the top surface of the lifting plate 2 is provided with a vertical plate 7; both ends of the bottom surface of the tipping plate 6 are provided with hinge seats; the housing of the second hydraulic cylinder 5 is hingedly connected to the hinge seat at the top of the lifting plate 2, and the end of the piston rod of the second hydraulic cylinder 5 is hingedly connected to the hinge seat at one end of the bottom surface of the tipping plate 6 to form a hinged connection structure, and the hinge seat at the other end of the bottom surface of the tipping plate 6 is hingedly connected to the top end of the vertical plate 7; the inclination angle of the tipping plate 6 is controlled by the telescopic movement of the piston rod of the second hydraulic cylinder 5.

[0017] The sliding part includes a third hydraulic cylinder 8 and a long sliding plate 9; the third hydraulic cylinder 8 is arranged on the top surface of the tipping plate 6, and the axis line of the piston rod of the third hydraulic cylinder 8 is parallel to the length direction line of the tipping plate 6; a sliding groove is arranged on the side wall of the long sliding plate 9, a sliding rail is arranged on the side wall of the tipping plate 6, and the sliding groove on the side wall of the long sliding plate 9 is slidably connected with the sliding rail on the side wall of the tipping plate 6; the long sliding plate 9 can slide on the side wall of the tipping plate 6, thereby driving the oxygen lance to enter or leave the drill hole of the tapping spout; the length direction line of the long sliding plate 9 is parallel to the axis line of the piston rod of the third hydraulic cylinder 8; the third hydraulic cylinder 8 is used to drive the long sliding plate 9 to slide, thereby driving the oxygen lance to slide synchronously.

[0018] The clamping part includes two clamping mechanisms, and the two clamping mechanisms are symmetrically arranged at both ends of the end surface of the long sliding plate 9 away from the tipping plate 6; each clamping mechanism includes an intermediate plate, an upper clamping plate 10, a lower clamping plate 11 and a bolt; the two clamping mechanisms cooperate to position and clamp the oxygen lance, thereby facilitating the flipping, advancing or retreating of the oxygen lance along with the operation of the device; the intermediate plate is arranged at the end of the long sliding plate 9; the upper clamping plate 10 and the lower clamping plate 11 are respectively arranged at the top and bottom of the end surface of the intermediate plate away from the long sliding plate 9; threaded holes are arranged at one ends of the upper clamping plate 10 and the lower clamping plate 11 away from the intermediate plate, and the bolt passes through the threaded holes of the upper clamping plate 10 and the lower clamping plate 11, and a nut is arranged at one end of the bolt; the oxygen lance 15 is clamped between the upper clamping plate 10 and the lower clamping plate 11; the oxygen lance can be clamped by tightening the bolt.

[0019] The sealing part includes a fourth hydraulic cylinder 12, a circular ring 13 and a trumpet-shaped hopper 14; the fourth hydraulic cylinder 12 is arranged on the top surface of the tipping plate 6, and the axis line of its piston rod is parallel to the axis line of the piston rod of the third hydraulic cylinder 8; the end of the piston rod of the fourth hydraulic cylinder 12 is connected to the circular ring 13; the fourth hydraulic cylinder can drive the combination of the circular ring 13 and the trumpet-shaped hopper 14 to move forward or backward, so that the trumpet-shaped hopper 14 can extend into the gap between the oxygen lance and the drilled hole of the tapping spout, ensuring that the high-temperature flame generated by the oxygen lance can fully melt the solidified molten iron and reducing the amount of flame overflowing from the gap between the oxygen lance and the drilled hole; the circular ring 13 is sleeved on the outer wall of the oxygen lance 15; the trumpet-shaped hopper 14 is arranged on the end surface of the circular ring 13 away from the fourth hydraulic cylinder 12, and the diameter of the end of the trumpet-shaped hopper 14 connected to the circular ring 13 is larger than the diameter of the end of the trumpet-shaped hopper 14 away from the circular ring 13, and the oxygen lance passes through the trumpet-shaped hopper 14; the inner diameter of the end of the trumpet-shaped hopper 14 away from the circular ring 13 is the same as the outer diameter of the oxygen lance 15; the end of the trumpet-shaped hopper 14 away from the circular ring 13 seals the gap between the oxygen lance and the drilled hole.

[0020] Principle of use: When molten iron solidifies at the tapping spout, push this device to the platform beside the tapping spout; then use the drill rig to drill a hole until the hole reaches the solidified molten iron. At this time, the drill rod of the drill rig cannot move forward any further and the drill rig cannot drill through the solidified molten iron; drive the tipping plate 6 to tilt through the second hydraulic cylinder 5 until the axis line of the oxygen lance is parallel to the axis line of the drilled hole of the tapping spout; then adjust the position of this device and adjust the height through the first hydraulic cylinder so that the head of the oxygen lance is aligned with the drilled hole of the tapping spout. Then start the third hydraulic cylinder 8 to drive the oxygen lance to extend into the drilled hole, and then start the fourth hydraulic cylinder 12 to make the trumpet-shaped hopper 14 block the gap between the oxygen lance and the drilled hole. Then introduce oxygen into the oxygen lance to ignite and blow-melt the solidified iron block. When the value of the pressure gauge at the end of the oxygen lance suddenly changes, it means that the iron block has been burned through. At this time, the fourth hydraulic cylinder 12 operates to retract the trumpet-shaped hopper, and then the third hydraulic cylinder 6 quickly resets to retract the oxygen lance. After the oxygen lance disengages from the drilled hole, the molten iron quickly flows out of the tapping spout; then quickly close the oxygen lance and remove part of the device. Thus, the operation of burning through the solidified iron block in the tapping spout is completed.

Claims

1. A burning-through device applicable to the tapping hole of a blast furnace, characterized in that: It includes a displacement part, an inclination part, a sliding part, a clamping part and a sealing part; the inclination part is arranged on the displacement part; the sliding part and the sealing part are both arranged on the inclination part; the clamping part is arranged on the sliding part, and the oxygen lance (15) is clamped on the clamping part.

2. The burn-through device applicable to the blast furnace tapping hole according to claim 1, characterized in that: The displacement part includes a bottom plate (1), a lifting plate (2), a first hydraulic cylinder (3) and a guide rod (4); universal wheels are arranged at the four corners of the lower end face of the bottom plate (1); guide rods (4) are arranged at the four corners of the upper end face of the bottom plate (1); guide holes are arranged at the four corners of the lifting plate (2), and guide rods (4) are respectively arranged in the guide holes; the shell of the first hydraulic cylinder (3) is arranged at the central position of the upper end face of the bottom plate (1), and the end of its piston rod is connected with the central position of the lower end face of the lifting plate (2).

3. The burn-through device applicable to the blast furnace tapping hole according to claim 2, characterized in that: The inclination part includes a second hydraulic cylinder (5), a flap (6) and a vertical plate (7); a hinge seat is arranged at one end of the top end face of the lifting plate (2), and a vertical plate (7) is arranged at the other end of the top end face of the lifting plate (2); hinge seats are arranged at both ends of the lower end face of the flap (6); the shell of the second hydraulic cylinder (5) is hinged with the hinge seat at the top end of the lifting plate (2), the end of the piston rod of the second hydraulic cylinder (5) is hinged with the hinge seat at one end of the bottom end face of the flap (6), and the hinge seat at the other end of the bottom end face of the flap (6) is hinged with the top end of the vertical plate (7).

4. The burn-through device applicable to the blast furnace tapping hole according to claim 3, characterized in that: The sliding part includes a third hydraulic cylinder (8) and a long sliding plate (9); the third hydraulic cylinder (8) is arranged on the top end face of the flap (6), and the axis line of the piston rod of the third hydraulic cylinder (8) is parallel to the length direction line of the flap (6); a chute is arranged on the side wall of the long sliding plate (9), a slide rail is arranged on the side wall of the flap (6), and the chute on the side wall of the long sliding plate (9) is slidably matched with the slide rail on the side wall of the flap (6); the length direction line of the long sliding plate (9) is parallel to the axis line of the piston rod of the third hydraulic cylinder (8).

5. The burn-through device applicable to the blast furnace tapping hole according to claim 4, characterized in that: The clamping part includes two clamping mechanisms, and the two clamping mechanisms are symmetrically arranged at both ends of the end face of the long sliding plate (9) away from the flap (6); each clamping mechanism includes an intermediate plate, an upper clamping plate (10), a lower clamping plate (11) and a bolt; the intermediate plate is arranged at the end of the long sliding plate (9); the upper clamping plate (10) and the lower clamping plate (11) are respectively arranged at the top and bottom of the end face of the intermediate plate away from the long sliding plate (9); threaded holes are arranged at one ends of the upper clamping plate (10) and the lower clamping plate (11) away from the intermediate plate, and the bolt passes through the threaded holes of the upper clamping plate (10) and the lower clamping plate (11), and a nut is arranged at one end of the bolt; the oxygen lance (15) is clamped between the upper clamping plate (10) and the lower clamping plate (11).

6. The burning-through device applicable to the blast furnace tapping hole according to claim 5, characterized in that: The sealing part includes a fourth hydraulic cylinder (12), a circular ring (13) and a horn-shaped hopper (14); the fourth hydraulic cylinder (12) is arranged on the top surface of the tipping plate (6), and the axis line of its piston rod is parallel to the axis line of the piston rod of the third hydraulic cylinder (8); the end of the piston rod of the fourth hydraulic cylinder (12) is connected to the circular ring (13); the circular ring (13) is sleeved on the outer wall of the oxygen lance (15); the horn-shaped hopper (14) is arranged on the end surface of the circular ring (13) away from the fourth hydraulic cylinder (12), and the diameter of the end of the horn-shaped hopper (14) connected to the circular ring (13) is larger than the diameter of the end of the horn-shaped hopper (14) away from the circular ring (13), and the oxygen lance passes through the horn-shaped hopper (14); the inner diameter of the end of the horn-shaped hopper (14) away from the circular ring (13) is consistent with the outer diameter of the oxygen lance (15).

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