A device for dismounting a large set of a blast furnace tuyere

Abstract

The utility model discloses a kind of high furnace tuyere big set dismounting device, for the dismounting of the tuyere big set being installed on high furnace tuyere, the big set lug is equipped on the tuyere big set;The high furnace tuyere big set dismounting device includes cross bar and hydraulic jack, and the cross bar is fixed with big set lug;The hydraulic jack is hung on lifting tool, and the hydraulic jack is located between high furnace and the cross bar;The first earring is equipped in the end of the cross bar end close to the hydraulic jack, second earring is equipped on the cross bar, and a pull rope passes through the first earring and the second earring;The outer wall top of one end of the hydraulic jack and high furnace touches, and the other end and the cross bar top touch.The utility model utilizes the hydraulic jack from the tuyere big set outside, force is applied to the cross bar and the tuyere big set, the tuyere big set is dismounted from high furnace, and it is time-saving and labor-saving to operate, and efficiency is high.

Description

Technical Field

[0001] This utility model relates to the technical field of blast furnace front maintenance equipment in the metallurgical industry, and in particular to a blast furnace tuyeres large sleeve disassembly device. Background Technology

[0002] In the blast furnace ironmaking process of the iron and steel metallurgical industry, the tuyere sleeve is a key sealing and cooling component connecting the tuyere and the furnace shell. It is subjected to extremely harsh working conditions under the combined scouring environment of high temperature above 1200℃ and high-speed pulverized coal and molten iron droplets. Affected by factors such as material thermal fatigue, cooling wall deformation, furnace pressure fluctuations and installation stress, the tuyere sleeve needs to be replaced on average every 1-2 years; in the middle and late stages of furnace operation or when the furnace condition is abnormal, the replacement frequency may even be shortened to 3-6 months.

[0003] Currently, both domestically and internationally, the common method of dismantling is through manual hammering and prying, a "violent dismantling" approach. Specifically, a sledgehammer and steel chisel are used to strike the outer edge of the tuyere sleeve, damaging the original refractory filler. Then, a jack or pry bar is used to apply radial force, loosening the tuyere sleeve from the furnace shell cone surface and separating it. Under this method, workers need to continuously hold a sledgehammer high and strike the tuyere platform, resulting in high labor intensity and low dismantling efficiency. Moreover, the tuyere platform is not only narrow but also relatively hot, posing a high safety risk and increasing the risk of heatstroke and burns. In addition, it is difficult to control the striking force during manual hammering, which can easily cause roughening of the tuyere sleeve installation cone surface and dents in the furnace shell steel plate, requiring additional welding and grinding, resulting in significant equipment damage and subsequent repairs. Utility Model Content

[0004] The purpose of this utility model is to provide a disassembly device for the large sleeve of a blast furnace tuyeres.

[0005] The technical solution to achieve the purpose of this utility model is: a blast furnace tuyere sleeve disassembly device, used to disassemble the tuyere sleeve installed on the blast furnace tuyere, wherein the large end of the tuyere sleeve protrudes from the outer wall of the blast furnace, and a sleeve hanging ear is provided on the end face of the large end of the tuyere sleeve, and an ear hole is provided on the sleeve hanging ear along the vertical direction. The blast furnace tuyere sleeve dismantling device includes a horizontal bar and a hydraulic jack. The horizontal bar has horizontal through holes, and a rod is inserted through each of these holes. The rod has a first vertical through hole and a second vertical through hole. The first vertical through hole is located above the sleeve lug and corresponds to and communicates with the lug hole. A first pin is correspondingly positioned in the first vertical through hole, passing through and being fixed within both the first vertical through hole and the lug hole. A second pin is correspondingly positioned in the second vertical through hole, passing through and... Fixed within the second vertical through hole, the first pin and the second pin are respectively located on both sides of the insertion rod; the hydraulic jack is suspended on the lifting device, and the hydraulic jack is located between the blast furnace and the crossbar; a first lug is provided at one end of the hydraulic jack near the crossbar, and a second lug is provided on the crossbar, the second lug and the center of the lifting device are located on the same vertical line of the crossbar, and a pull rope passes through the first lug and the second lug; one end of the hydraulic jack contacts the outer wall of the blast furnace, and the other end contacts the crossbar.

[0006] Furthermore, the large sleeve of the air vent sleeve has two large sleeve hanging ears, which are evenly distributed on both sides of the air vent sleeve port. The crossbar also has two horizontal through holes, with two insert rods passing through each horizontal through hole corresponding one-to-one with the two large sleeve hanging ears. The large sleeve hanging ears are mainly used for hoisting the air vent sleeve, and typically, the air vent sleeve has two large sleeve hanging ears. When the air vent sleeve has two large sleeve hanging ears, the crossbar is provided with two horizontal through holes, each with an insert rod passing through it, and the two insert rods are fixed one-to-one with the two large sleeve hanging ears. Through the fixing structure of the two sets of insert rods and large sleeve hanging ears, the connection and installation of the crossbar and the air vent sleeve is more stable and reliable.

[0007] Furthermore, the horizontal through hole on the crossbar is a strip-shaped hole arranged horizontally along its length. This structure allows for convenient horizontal displacement of the insertion rod within the horizontal through hole, aligning the insertion rod passing through the horizontal through hole with the large sleeve lug. This enables the first pin to pass through the first vertical through hole and the lug hole, achieving connection. This design effectively avoids the problem of misalignment between the insertion rod and the large sleeve lug due to structural errors.

[0008] Furthermore, there are two hydraulic jacks, each located on one side of the tuyeres sleeve. When the hydraulic jacks press down on the tuyeres sleeve from both sides, the force on the tuyeres sleeve is greater and more even, making it easier to remove the tuyeres sleeve from the blast furnace.

[0009] Furthermore, the lifting device is a crane or an electric hoist.

[0010] This utility model relates to a blast furnace tuyere sleeve disassembly device. By installing a crossbar on the tuyere sleeve and placing a hydraulic jack on the side of the tuyere sleeve, between the blast furnace and the crossbar, the hydraulic jack can be used to apply force from outside the tuyere sleeve to the crossbar and the tuyere sleeve, thus disassembling the tuyere sleeve from the blast furnace. Compared to the traditional manual hammering disassembly method, this utility model eliminates the need for manual force application, saving time and effort, increasing efficiency, and avoiding the risks of high-temperature operations, as well as the problems of roughening the tuyere sleeve installation cone surface and denting the furnace shell steel plate caused by difficulty in controlling the force manually.

[0011] This utility model relates to a blast furnace tuyere sleeve disassembly device. A horizontal through hole is formed in the crossbar, and an insert rod with a first vertical through hole and a second vertical through hole passes through the horizontal through hole. A first pin, inserted into the first vertical through hole and the ear hole, fixes the crossbar and the tuyere sleeve's large sleeve lug. A second pin, passing through the second vertical through hole, limits the crossbar's position, thus achieving the installation and fixation of the crossbar onto the tuyere sleeve's large sleeve lug. With this installation structure, the insert rod can be directly installed using the tuyere sleeve's large sleeve lug, eliminating the need for a separate installation bracket on the tuyere sleeve. This design is not only simple in structure, but also allows for detachable installation of the large sleeve lug and the insert rod, making operation more flexible and convenient.

[0012] This utility model's blast furnace tuyere sleeve dismantling device further incorporates a first lug on the end of the hydraulic jack near the crossbar, and a second lug on the crossbar. When the hydraulic jack, suspended between the blast furnace and the crossbar, is horizontally tilted and its ends are not aligned with the tuyere sleeve and the blast furnace, the pull rope can be tightened to reduce the distance between the first and second lugs. This causes the hydraulic jack to automatically rotate, with its ends facing the tuyere sleeve and the blast furnace, respectively, thus aligning with them. The first lug, second lug, and pull rope facilitate adjustment of the hydraulic jack's orientation, ensuring it is aligned with the tuyere sleeve and the blast furnace, and enabling smoother dismantling of the tuyere sleeve. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the blast furnace tuyeres sleeve of this utility model; Figure 2 This is a top view schematic diagram of the blast furnace tuyere sleeve dismantling device of this utility model, excluding the lifting tools and ropes; Figure 3 This is a cross-sectional view of the crossbar, insert rod, and large sleeve hanging lug of the blast furnace tuyere large sleeve disassembly device along the insert rod axis. Figure 4 This is a schematic diagram of the structure of the blast furnace tuyeres large sleeve dismantling device when the hydraulic jack is suspended on the lifting device; Figure 5 This is a top view of the blast furnace tuyere large sleeve dismantling device of this utility model, excluding the lifting tools and with the hydraulic jack tilted. Figure 6 This is a schematic diagram of the crossbar and insert rod of the blast furnace tuyere large sleeve disassembly device of this utility model. Detailed Implementation

[0014] The preferred embodiment of the blast furnace tuyere sleeve disassembly device of this utility model will be described in detail below with reference to the accompanying drawings: like Figures 1 to 6 As shown, a blast furnace tuyere sleeve disassembly device is used to disassemble the tuyere sleeve 10 installed on the blast furnace tuyere. The large end 100 of the tuyere sleeve 10 protrudes from the outer wall of the blast furnace 20. A sleeve hanging lug 101 is provided on the end face of the large end 100 of the tuyere sleeve 10. An ear hole 1011 is opened on the sleeve hanging lug 101 along the vertical direction. The blast furnace tuyere sleeve disassembly device includes a horizontal bar 1 and a hydraulic jack 2. The horizontal bar 1 has horizontal through holes 11, and a rod 3 is inserted through each horizontal through hole 11. The rod 3 has a first vertical through hole 31 and a second vertical through hole 32. The first vertical through hole 31 is located above the sleeve lug 101 and corresponds to and communicates with the lug hole 1011. A first pin 41 is correspondingly provided with the first vertical through hole 31, passing through and being fixed inside the first vertical through hole 31 and the lug hole 1011. A second pin 42 is correspondingly provided with the second vertical through hole 32, passing through and being fixed inside the second vertical through hole 31 and the lug hole 1011. The first pin 41 and the second pin 42 are respectively located on both sides of the insert rod 3 and fixed in the second vertical through hole 32; the hydraulic jack 2 is suspended on the lifting device 5 and is located between the blast furnace 20 and the crossbar 1; the hydraulic jack 2 is provided with a first ear ring 61 at one end near the crossbar 1 and a second ear ring 62 is provided on the crossbar 1. The second ear ring 62 and the center P of the lifting device 5 are located on the same vertical line L of the crossbar 1. A pull rope 6 passes through the first ear ring 61 and the second ear ring 62; one end of the hydraulic jack 2 touches the outer wall of the blast furnace 20 and the other end touches the crossbar 1.

[0015] This utility model relates to a blast furnace tuyere sleeve disassembly device, used for disassembling the tuyere sleeve 10 installed on the blast furnace tuyere. The tuyere sleeve 10 is a cone-shaped cylindrical structure, larger at one end and smaller at the other. When the tuyere sleeve 10 is installed on the blast furnace tuyere, the larger end 100 of the tuyere sleeve 10 extends beyond the outer wall of the blast furnace 20. The end face of the larger end 100 of the tuyere sleeve 10 has a sleeve hanging lug 101, which is typically a cylindrical structure with ear holes 1011 opened in the vertical direction. It serves as a lifting support point and lifting lug for disassembly, transportation, and positioning, and is mainly used for the lifting operation of the tuyere sleeve 10.

[0016] This utility model relates to a blast furnace tuyere sleeve disassembly device, mainly composed of a crossbar 1 and a hydraulic jack 2. The crossbar 1 is installed on the tuyere sleeve 10, providing a fulcrum for the sleeve. A plug 3 passes through the horizontal through hole 11 on the crossbar 1. One end is fixed to the sleeve lug 101 of the tuyere sleeve 10 via a first pin 41 passing through the first vertical through hole 31 and the lug 1011. The other end is secured to the crossbar 1 via a second pin 42 passing through the second vertical through hole 32. The horizontal bar 1, which is fixed at one end to the large sleeve lug 101 and at the other end to limit the movement of the horizontal bar 1, is used to connect the tuyer sleeve 10 and the horizontal bar 1. The hydraulic jack 2 is suspended on the lifting device 5. During operation, one end of the hydraulic jack 2 contacts the outer wall of the blast furnace 20 and the other end contacts the horizontal bar 1, which is used to provide a force to separate the tuyer sleeve 10 from the blast furnace 20. The lifting device 5 is used to provide lifting and support for the hydraulic jack 2 to be in place. The pull rope 6 passes through the first lug 61 on the hydraulic jack 2 and the second lug 62 on the crossbar 1. When the suspended hydraulic jack 2 is tilted horizontally and its two ends are not aligned with the tuyeres sleeve 10 and the blast furnace 20, the pull rope 6 can be used to adjust the orientation of the suspended hydraulic jack 2 so that its two ends are respectively aligned with the tuyeres sleeve 10 and the blast furnace 20.

[0017] The present invention relates to a blast furnace tuyere sleeve disassembly device. When disassembling the tuyere sleeve 10 installed on the blast furnace tuyere, the insert rod 3 is passed through the horizontal through hole 11 on the crossbar 1, the crossbar 1 is lifted and hoisted to the sleeve lug 101 of the tuyere sleeve 10, and then the first pin 41 is passed through the first vertical through hole 31 and the lug hole 1011, and the second pin 42 is passed through the second vertical through hole 32, so that the crossbar 1 is fixed to the tuyere sleeve 10. After the crossbar 1 is fixed to the tuyer sleeve 10, the hydraulic jack 2 is lifted using the lifting device 5, so that the hydraulic jack 2 is positioned horizontally between the blast furnace 20 and the crossbar 1. If the suspended hydraulic jack 2 is tilted horizontally between the blast furnace 20 and the crossbar 1, and its two ends are not aligned with the tuyer sleeve 10 and the blast furnace 20, the two ends of the pull rope 6 are manually pulled to tighten the pull rope 6 of the first earring 61 and the second earring 62. As the spacing of the second earring 62 decreases, the hydraulic jack 2 automatically rotates, with both ends facing the tuyer sleeve 10 and the blast furnace 20 respectively, aligning with them. Then, the hydraulic jack 2 actuates, extending with one end touching the outer wall of the blast furnace 20 and the other end touching the crossbar 1. The hydraulic jack 2 applies force to the crossbar 1 and the tuyer sleeve 10, removing the tuyer sleeve 10 from the blast furnace 20.

[0018] This utility model relates to a blast furnace tuyere sleeve disassembly device. By installing a crossbar 1 on the tuyere sleeve 10, and placing a hydraulic jack 2 between the blast furnace 20 and the crossbar 1 on the side of the tuyere sleeve 10, force can be applied from outside the tuyere sleeve 10 to the crossbar 1 and the tuyere sleeve 10, thereby disassembling the tuyere sleeve 10 from the blast furnace 20. Compared to the traditional manual hammering disassembly method, this utility model eliminates the need for manual force application, saving time and effort, increasing efficiency, and avoiding the risks of high-temperature operations, as well as the problems of roughening the tuyere sleeve installation cone surface and denting the furnace shell steel plate caused by difficulty in controlling the force manually.

[0019] This utility model relates to a blast furnace tuyere sleeve disassembly device. A horizontal through hole 11 is formed in the crossbar 1. A rod 3, with a first vertical through hole 31 and a second vertical through hole 32, passes through the horizontal through hole 11. A first pin 41, passing through the first vertical through hole 31 and the ear hole 1011, fixes the crossbar 1 and the large sleeve hanging ear 101 of the tuyere sleeve 10. The second pin 42, passing through the second vertical through hole 32, limits the movement of the crossbar 1, thus achieving the installation and fixation of the crossbar 1 onto the large sleeve hanging ear 101 of the tuyere sleeve 10. With this installation structure, the rod 3 can be directly installed using the large sleeve hanging ear 101 of the tuyere sleeve 10. No additional installation bracket is needed on the tuyere sleeve 10. This design is not only simple in structure, but also allows for the detachable installation of the large sleeve hanging ear 101 and the rod 3, making operation more flexible and convenient.

[0020] The blast furnace tuyeres sleeve disassembly device of this utility model further includes a first lug 61 at the end of the hydraulic jack 2 near the crossbar 1 and a second lug 62 on the crossbar 1. When the hydraulic jack 2, suspended between the blast furnace 20 and the crossbar 1, is horizontally tilted and its ends are not aligned with the tuyeres sleeve 10 and the blast furnace 20, the pull rope 6 can be tightened at both ends to reduce the distance between the first lug 61 and the second lug 62. This causes the hydraulic jack 2 to automatically turn, with its ends facing the tuyeres sleeve 10 and the blast furnace 20 respectively, aligning with them. The first earring 61, the second earring 62 and the pull rope 6 are provided to facilitate the adjustment of the orientation of the hydraulic jack 2, so that the hydraulic jack 2 can be aligned with the tuyeres sleeve 10 and the blast furnace 20, and the disassembly of the tuyeres sleeve 10 can be completed more smoothly.

[0021] In this utility model, the hydraulic jack 2 located between the blast furnace 20 and the crossbar 1 directly contacts the outer wall of the blast furnace 20, making the support of the blast furnace 20 more stable and reliable.

[0022] In this utility model, the blast furnace tuyere sleeve disassembly device preferably includes two sleeve hanging ears 101 on the tuyere sleeve 10, which are evenly distributed on both sides of the tuyere sleeve 10 port. The crossbar 1 also has two horizontal through holes 11, with two insert rods 3 passing through each horizontal through hole 11 corresponding to one of the sleeve hanging ears 101. The sleeve hanging ears 101 are mainly used for hoisting the tuyere sleeve, and typically the tuyere sleeve 10 has two sleeve hanging ears 101. When the tuyere sleeve 10 has two sleeve hanging ears 101, the crossbar 1 is provided with two horizontal through holes 11, and an insert rod 3 passes through each horizontal through hole 11, with the two insert rods 3 corresponding to and fixed to the two sleeve hanging ears 101. With the fixing structure of the two sets of plug rods and the large sleeve lug 101, the connection and installation of the crossbar 1 and the large air vent sleeve 10 are more stable and reliable.

[0023] In this utility model of a blast furnace tuyere large sleeve disassembly device, preferably, the horizontal through hole 11 on the crossbar 1 is a strip-shaped hole arranged horizontally along its length. This structure allows for convenient horizontal displacement of the insert rod 3 within the horizontal through hole 11, aligning the insert rod 3 passing through the horizontal through hole 11 with the large sleeve hanging lug 101, thereby enabling the first pin 41 to pass through the first vertical through hole 31 and the lug hole 1011 for connection. This design effectively avoids the problem of misalignment between the insert rod 3 and the large sleeve hanging lug 101 due to structural errors.

[0024] Preferably, in this blast furnace tuyere sleeve dismantling device, there are two hydraulic jacks 2, located on opposite sides of the tuyere sleeve 10. When the hydraulic jacks 2 press against the tuyere sleeve 10 from both sides, the force on the tuyere sleeve 10 is greater and more even, making it easier to remove the tuyere sleeve 10 from the blast furnace 20.

[0025] The present invention relates to a blast furnace tuyere large sleeve dismantling device, wherein the lifting device 5 is a crane or an electric hoist.

[0026] For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the protection scope of this utility model.

Claims

1. A blast furnace tuyere sleeve disassembly device, used to disassemble the tuyere sleeve installed on the blast furnace tuyere, wherein the large end of the tuyere sleeve protrudes from the outer wall of the blast furnace, and a sleeve hanging lug is provided on the end face of the large end of the tuyere sleeve, and an ear hole is provided on the sleeve hanging lug along the vertical direction; characterized in that: The blast furnace tuyere sleeve dismantling device includes a horizontal bar and a hydraulic jack. The horizontal bar has horizontal through holes, and a rod is inserted through each of these holes. The rod has a first vertical through hole and a second vertical through hole. The first vertical through hole is located above the sleeve lug and corresponds to and communicates with the lug hole. A first pin is correspondingly positioned in the first vertical through hole, passing through and being fixed within both the first vertical through hole and the lug hole. A second pin is correspondingly positioned in the second vertical through hole, passing through and... Fixed within the second vertical through hole, the first pin and the second pin are respectively located on both sides of the insertion rod; the hydraulic jack is suspended on the lifting device, and the hydraulic jack is located between the blast furnace and the crossbar; a first lug is provided at one end of the hydraulic jack near the crossbar, and a second lug is provided on the crossbar, the second lug and the center of the lifting device are located on the same vertical line of the crossbar, and a pull rope passes through the first lug and the second lug; one end of the hydraulic jack contacts the outer wall of the blast furnace, and the other end contacts the crossbar.

2. The blast furnace tuyeres large sleeve disassembly device according to claim 1, characterized in that: The number of large sleeve lugs on the large sleeve of the air vent is two, and the two large sleeve lugs are evenly distributed on both sides of the port of the large sleeve of the air vent. The number of horizontal through holes on the crossbar is also two, and the two insert rods inserted in the two horizontal through holes correspond one-to-one with the two large sleeve lugs.

3. The blast furnace tuyeres large sleeve disassembly device according to claim 1, characterized in that: The horizontal through hole on the crossbar is a strip-shaped hole arranged horizontally along its length.

4. The blast furnace tuyere sleeve disassembly device according to claim 1, characterized in that: The number of hydraulic jacks is two, and the two hydraulic jacks are located on both sides of the air vent sleeve.

5. The blast furnace tuyeres large sleeve disassembly device according to claim 1, characterized in that: The lifting device is a crane or an electric hoist.

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