Dismounting device suitable for tuyere sleeve of blast furnace

Abstract

A dismounting device suitable for a blast furnace tuyere sleeve comprises a middle disc, a cylinder, a pulling-out part, an expansion part, a limiting part and a position adjusting part. The middle disc is arranged on the position adjusting part; the end of the cylinder is arranged in the middle of the end face of the middle disc, and a hole is formed in the center of the middle disc and is in butt joint with an inner hole of the cylinder. The pulling part is arranged on the end face of the middle disc; the expansion part is arranged on the end face, away from the middle disc, of the cylinder. And the limiting part is arranged in an inner hole of the cylinder. The disassembly efficiency of the tuyere sleeve is improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to a disassembly device, in particular to a device capable of assisting workers in disassembling the tuyere sleeve at the bottom of a blast furnace, belonging to the technical field of blast furnace tuyere sleeve disassembly. Background Technique

[0002] A blast furnace is a smelting device where various ore materials react inside. During the reaction process, the addition of air is required to help the reaction in the furnace proceed fully; the air supply device that provides air for the blast furnace injects hot air into the blast furnace through the tuyere sleeve on the blast furnace shell; the tuyere sleeve consists of a tuyere large sleeve, a middle sleeve, and a small sleeve; because the tuyere sleeve is in contact with the blast furnace, the tuyere sleeve will be subjected to high-temperature roasting from the blast furnace. During the use of the tuyere sleeve, due to the harsh use environment, its damage rate is relatively high, and it needs to be disassembled, repaired, or replaced regularly; currently, the disassembly of the tuyere sleeve is completed manually. Workers insert a steel bar with hooks at both ends into the tuyere sleeve, so that the hook at one end of the steel bar hooks the end of the tuyere sleeve, and then the worker holds a sledgehammer and strikes the hook at the other end of the steel bar, and the tuyere sleeve is pulled out by the impact force. This process is extremely time-consuming and laborious, and the efficiency is low; therefore, a disassembly device is needed, which is required to be able to disassemble the tuyere sleeve efficiently. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a disassembly device applicable to the blast furnace tuyere sleeve, which can not only reduce the labor intensity of workers but also improve the disassembly efficiency of the tuyere sleeve.

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

[0005] A disassembly device applicable to the blast furnace tuyere sleeve includes an intermediate disk, a cylinder, a pulling-out part, an expanding part, a limiting part, and a position adjusting part; the intermediate disk is arranged on the position adjusting part; the end of the cylinder is arranged at the center position of the end face of the intermediate disk, and a hole is provided at the center of the intermediate disk, and this hole is docked with the inner hole of the cylinder; the pulling-out part is arranged on the end face of the intermediate disk; the expanding part is arranged on the end face of the cylinder far from the intermediate disk; the limiting part is arranged in the inner hole of the cylinder.

[0006] For the above-mentioned disassembly device applicable to the blast furnace tuyere sleeve, the position adjusting part includes a lifting plate, a bottom plate, a first hydraulic cylinder, a guide rod, and a counterweight; walking wheels are arranged at the four corners of the lower end face of the bottom plate; the first hydraulic cylinder is arranged on the upper end face of the bottom plate, and the end of its piston rod is connected to the bottom end face of the lifting 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 the guide rods are inserted into the guide holes; the intermediate disk is arranged at the end of the lifting plate through a bracket; the counterweight is arranged at one end of the upper end face of the bottom plate far from the intermediate disk.

[0007] The above-mentioned disassembly device applicable to the blast furnace tuyere sleeve, wherein the limiting part includes a long rod, a turntable and a conical column; the long rod is inserted into the hole of the cylinder, the inner hole of the cylinder is provided with internal threads, and the outer wall of the long rod is provided with external threads; a turntable is arranged at one end of the long rod close to the lifting plate, a conical column is arranged at the other end of the long rod, and the smaller-diameter end of the conical column is connected to the end of the long rod.

[0008] The above-mentioned disassembly device applicable to the blast furnace tuyere sleeve, wherein the expanding part includes a plurality of expanding mechanisms, and each expanding mechanism is uniformly arranged on the end face of the cylinder far from the middle plate along the circumferential direction of the cylinder; the expanding mechanism includes a hinge seat, a pull rod and a hook; the hinge seat is arranged on the end face of the cylinder far from the middle plate; one end of the pull rod is hinged to the hinge seat; the hook is arranged at one end of the end face of the pull rod far from the axis of the cylinder and away from the hinge seat.

[0009] The above-mentioned disassembly device applicable to the blast furnace tuyere sleeve, wherein the pulling-out part includes a rotating ring and a pulling-out mechanism; an annular guiding strip is arranged on the end face of the rotating ring, an annular guiding groove is arranged on the end face of the middle plate, and the rotating ring is slidably arranged on the annular guiding groove of the middle plate through the annular guiding strip; the rotating ring is located on the end face of the middle plate close to the conical column; the number of the pulling-out mechanisms is multiple, and they are uniformly arranged on the end face of the rotating ring close to the conical column.

[0010] The above-mentioned disassembly device applicable to the blast furnace tuyere sleeve, wherein the pulling-out mechanism includes a square cylinder, a second hydraulic cylinder and a pressing head; the square cylinder is arranged on the end face of the rotating ring close to the conical column, and the second hydraulic cylinder is arranged in the square cylinder; a pressing head is arranged at the end of the piston rod of the second hydraulic cylinder.

[0011] The cooperation between the expanding part and the limiting part of the present utility model effectively grips the end of the tuyere sleeve, and then cooperates with the pulling-out part to pull out the tuyere sleeve. The position adjustment part ensures that the other parts can smoothly contact and dock with the tuyere sleeve, ensuring the smooth progress of the tuyere sleeve pulling-out operation. Description of the Drawings

[0012] Figure 1 It is a schematic three-dimensional structure diagram of the present utility model.

[0013] The list of each label in the figure is as follows: 1. Middle plate, 2. Cylinder, 3. Lifting plate, 4. Bottom plate, 5. First hydraulic cylinder, 6. Guide rod, 7. Counterweight, 8. Long rod, 9. Turntable, 10. Conical column, 11. Hinge seat, 12. Pull rod, 13. Hook, 14. Rotating ring, 15. Square cylinder, 16. Pressing head. Detailed Embodiments

[0014] Refer to Figure 1, the utility model includes an intermediate disc 1, a cylinder 2, a removal part, an expansion part, a limiting part and a position adjustment part; the intermediate disc 1 is arranged on the position adjustment part; the remaining parts are driven by the position adjustment part to move to the front of the tuyere sleeve for operation; the end of the cylinder 2 is arranged at the center of the end face of the intermediate disc 1, and there is a hole in the center of the intermediate disc 1, and this hole is docked with the inner hole of the cylinder 2; the removal part is arranged on the end face of the intermediate disc 1; the removal part is used to provide a force for the tuyere sleeve to move outwards; the expansion part is arranged on the end face of the cylinder 2 far away from the intermediate disc 1; the limiting part is arranged in the inner hole of the cylinder 2; the amplitude of the outward expansion of the expansion part is controlled by the limiting part, and then the front edge of the tuyere sleeve is controlled to be held by the expansion part, so as to facilitate the removal of the tuyere sleeve from its original position.

[0015] The position adjustment part includes a lifting plate 3, a bottom plate 4, a first hydraulic cylinder 5, a guide rod 6 and a counterweight 7; walking wheels are arranged at the four corners of the lower end face of the bottom plate 4; the position adjustment part can walk and adjust its position through the walking wheels; the first hydraulic cylinder 5 is arranged on the upper end face of the bottom plate 4, and the end of its piston rod is connected to the bottom end face of the lifting plate 3; the first hydraulic cylinder 5 drives the lifting plate 3 to vertically lift and lower; guide rods 6 are arranged at the four corners of the upper end face of the bottom plate 4, guide holes are arranged at the four corners of the lifting plate 3, and the guide rods 6 are inserted into the guide holes; the existence of the guide rods 6 provides a guiding function for the lifting and lowering of the lifting plate 3; the intermediate disc 1 is arranged at the end of the lifting plate 3 through a bracket; the intermediate disc 1 and the remaining parts arranged on the intermediate disc 1 are lifted and lowered synchronously with the lifting and lowering of the lifting plate 3 to adjust the position; the counterweight 7 is arranged at one end of the upper end face of the bottom plate 4 far away from the intermediate disc 1, and the counterweight is used to prevent the position adjustment part from tipping over.

[0016] The limiting part includes a long rod 8, a turntable 9 and a tapered column 10; the long rod 8 is inserted into the hole of the cylinder 2, the inner hole of the cylinder 2 is provided with internal threads, and the outer wall of the long rod 8 is provided with external threads; the long rod 8 is driven to rotate by rotating the turntable 9, and the rotating long rod 8 moves along its axis direction in the cylinder 2; a turntable 9 is arranged at one end of the long rod 8 close to the lifting plate 3, a tapered column 10 is arranged at the other end of the long rod 8, and the smaller diameter end of the tapered column 10 is connected to the end of the long rod 8; the tapered column 10 is located between the respective pull rods 12, and when the tapered column 10 moves close to the cylinder 2, it pushes the respective pull rods 12 to turn outwards, so that the hooks 13 at the ends of the respective pull rods 12 firmly hook the front edge of the tuyere sleeve.

[0017] The expansion part includes multiple expansion mechanisms, and each expansion mechanism is evenly arranged on the end surface of the cylinder 2 away from the middle disk 1 along the circumferential direction of the cylinder 2; the expansion mechanism includes a hinge seat 11, a pull rod 12 and a hook 13; the hinge seat 11 is arranged on the end surface of the cylinder 2 away from the middle disk 1; the hinge seat 11 allows the pull rod 12 to be flipped outward, so that the hook 13 at the end of the pull rod 12 hooks the front edge of the air outlet sleeve; one end of the pull rod 12 is hingedly set on the hinge seat 11; the hook 13 is set at one end of the end surface of the pull rod 12 away from the axis of the cylinder 2 away from the hinge seat 11.

[0018] The pulling out part includes a rotating ring 14 and a pulling out mechanism; an annular guide strip is provided on the end face of the rotating ring 14, an annular guide groove is provided on the end face of the intermediate disk 1, and the rotating ring 14 is slidably set on the annular guide groove of the intermediate disk 1 through the annular guide strip; the cooperation of the annular guide groove and the annular guide strip enables the rotating ring 14 to rotate reliably in situ; the rotating ring 14 is located on the end face of the intermediate disk 1 close to the conical column 10; the number of the pulling out mechanisms is multiple, and they are evenly arranged on the end face of the rotating ring 14 close to the conical column 10.

[0019] The extraction mechanism includes a square tube 15, a second hydraulic cylinder and a contact pressure head 16; the square tube 15 is arranged on the end surface of the rotating ring 14 close to the conical column 10, and the second hydraulic cylinder is arranged in the square tube 15; the end of the piston rod of the second hydraulic cylinder is provided with a contact pressure head 16;

[0020] Principle of use: When the tuyere sleeve needs to be removed, move the device to the front of the tuyere sleeve, extend the pull rod 12 and the hook 13 into the tuyere sleeve, and then adjust the position of the bottom plate 4 and the height of the cylinder 2 so that the axis of the cylinder 2 is aligned with the axis of the tuyere sleeve as much as possible; then rotate the turntable 9 to make the long rod 8 drive the conical column 10 to retreat, and in the process of the conical column 10 moving away from the tuyere sleeve, it pushes the pull rods 12 around it to expand outward until each hook 13 hooks the front edge of the tuyere sleeve, and then start each second hydraulic cylinder so that the pressure head 16 is against the outer wall of the blast furnace, and then continue to exert force to slowly pull out the tuyere sleeve until the tuyere sleeve is completely separated from the blast furnace, and the tuyere sleeve disassembly operation is completed.

Claims

1. A disassembly device for a blast furnace tuyere sleeve, characterized in that: The invention comprises an intermediate disk (1), a cylinder (2), a removal portion, an expansion portion, a limiting portion and a position adjustment portion; the intermediate disk (1) is arranged on the position adjustment portion; the end of the cylinder (2) is arranged at a central position of the end surface of the intermediate disk (1), and a hole is arranged at the center of the intermediate disk (1), and the hole is connected to the inner hole of the cylinder (2); the removal portion is arranged on the end surface of the intermediate disk (1); the expansion portion is arranged on the end surface of the cylinder (2) away from the intermediate disk (1); and the limiting portion is arranged in the inner hole of the cylinder (2).

2. The disassembly device for blast furnace tuyere sleeve according to claim 1 is characterized in that: The position adjustment part comprises a lifting plate (3), a bottom plate (4), a first hydraulic cylinder (5), a guide rod (6) and a counterweight (7); the bottom plate (4) has four corners provided with walking wheels at the bottom end surface; the first hydraulic cylinder (5) is arranged on the top end surface of the bottom plate (4), and the end of its piston rod is connected to the bottom end surface of the lifting plate (3); the top end surface of the bottom plate (4) has four corners provided with guide rods (6), the top end surface of the lifting plate (3) has four corners provided with guide holes, and the guide rods (6) are inserted into the guide holes; the intermediate plate (1) is arranged at the end of the lifting plate (3) through a bracket; and the counterweight (7) is arranged at one end of the top end surface of the bottom plate (4) away from the intermediate plate (1).

3. The disassembly device for blast furnace tuyere sleeve according to claim 2 is characterized in that: The limiting part comprises a long rod (8), a rotating disk (9) and a tapered column (10); the long rod (8) is inserted into the hole of the cylinder (2); the inner hole of the cylinder (2) is provided with an internal thread, and the outer wall of the long rod (8) is provided with an external thread; the rotating disk (9) is provided at one end of the long rod (8) close to the lifting plate (3), and the tapered column (10) is provided at the other end of the long rod (8), and the end of the tapered column (10) with a smaller diameter is connected to the end of the long rod (8).

4. The disassembly device for blast furnace tuyere sleeve according to claim 3 is characterized in that: The expansion portion comprises a plurality of expansion mechanisms, and each expansion mechanism is evenly arranged on the end surface of the cylinder (2) away from the intermediate disk (1) along the circumferential direction of the cylinder (2); the expansion mechanism comprises a hinge seat (11), a pull rod (12) and a hook (13); the hinge seat (11) is arranged on the end surface of the cylinder (2) away from the intermediate disk (1); one end of the pull rod (12) is hingedly arranged on the hinge seat (11); the hook (13) is arranged on one end of the end surface of the pull rod (12) away from the axis of the cylinder (2) away from the hinge seat (11).

5. The disassembly device for blast furnace tuyere sleeve according to claim 4 is characterized in that: The plucking part comprises a rotating ring (14) and a plucking mechanism; an annular guide strip is arranged on the end surface of the rotating ring (14), an annular guide groove is arranged on the end surface of the intermediate disk (1), and the rotating ring (14) is slidably arranged on the annular guide groove of the intermediate disk (1) via the annular guide strip; the rotating ring (14) is located on the end surface of the intermediate disk (1) close to the conical column (10); the plucking mechanism is in multiple numbers and is evenly arranged on the end surface of the rotating ring (14) close to the conical column (10).

6. The disassembly device for blast furnace tuyere sleeve according to claim 5 is characterized in that: The extraction mechanism comprises a square cylinder (15), a second hydraulic cylinder and a pressure contact head (16); the square cylinder (15) is arranged on the end surface of the rotating ring (14) close to the conical column (10), and the second hydraulic cylinder is arranged in the square cylinder (15); the end of the piston rod of the second hydraulic cylinder is provided with a pressure contact head (16).

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