Blast furnace ironmaking dust removal device and working method

Abstract

This invention relates to the field of blast furnace ironmaking technology, and discloses a dust removal device and its working method for blast furnace ironmaking. The device includes an ironmaking furnace, a first exhaust pipe fixedly connected to the top surface of the furnace, a dust settling box fixedly connected to the end of the first exhaust pipe away from the furnace, a second exhaust pipe fixedly connected to the top of the dust settling box at the right side of the first exhaust pipe, a dust removal unit fixedly connected to the end of the second exhaust pipe away from the dust settling box, and a filter unit fixedly connected to the bottom surface of the dust removal unit. The dust removal unit includes a dust settling box fixedly connected to the end of the second exhaust pipe away from the dust settling box, with a cavity inside the dust settling box, and a motor fixedly connected to the inner side of the dust settling box. Through the cooperation between the structures, the filter components within the filtration range can be quickly moved and replaced, thereby maintaining the dust removal unit at its highest efficiency and extending its service life, thus improving the service life of the dust removal structure and the working efficiency of the device.

Description

Technical Field

[0001] This invention relates to the field of blast furnace ironmaking technology, and in particular to a dust removal device and its working method for blast furnace ironmaking. Background Technology

[0002] Blast furnace ironmaking uses iron ore, coke, and flux as the main raw materials, which are added in batches from the top of the furnace, while high-temperature hot air is blown into the furnace through the tuyeres. The combustion of coke produces high-temperature and reducing carbon monoxide gas, which, in a counter-current process, reduces the iron oxides in the iron ore to metallic iron. At high temperatures, the ore melts and softens, and the molten iron separates from the slag and accumulates at the bottom of the furnace, eventually being discharged from the taphole and slag outlet respectively. The entire process is carried out continuously in a closed, high-temperature vertical shaft furnace, achieving the reduction, melting, slag formation, and collection of molten iron from the iron ore, thus completing continuous ironmaking production.

[0003] The existing dust removal structures in some blast furnace ironmaking systems are cumbersome to replace during use, which greatly hinders the improvement of blast furnace ironmaking efficiency.

[0004] Therefore, it is necessary to provide a dust removal device and working method for blast furnace ironmaking to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a dust removal device and working method for blast furnace ironmaking, which can solve the problem that the replacement of the dust prevention structure is cumbersome during the use of some blast furnace ironmaking dust removal structures, which greatly hinders the improvement of blast furnace ironmaking efficiency.

[0006] According to the technical solution provided by the present invention: a gear end face grinding device includes an ironmaking furnace, a first exhaust pipe is fixedly connected to the top surface of the ironmaking furnace, a dust collection box is fixedly connected to the end of the first exhaust pipe away from the ironmaking furnace, a second exhaust pipe is fixedly connected to the top of the dust collection box at the right side of the first exhaust pipe, a dust removal unit is fixedly connected to the end of the second exhaust pipe away from the dust collection box, and a filter unit is fixedly connected to the bottom surface of the dust removal unit.

[0007] The dust removal unit includes a dust removal box fixedly connected to the end of the second exhaust pipe away from the dust settling box. The dust removal box has an internal cavity. A motor is fixedly connected to the inner side of the dust removal box, and a rotating shaft is fixedly connected to the output end of the motor. Multiple first connecting rods are rotatably connected to the inner wall of the dust removal box. Two second connecting rods are rotatably connected inside the dust removal box, with the second connecting rods located to the left of the first connecting rods. An extrusion sleeve is fixedly connected to the outer wall of each of the first or second connecting rods. A filter assembly is slidably connected between the outer walls of the six extrusion sleeves on the right side, and the two extrusion sleeves on the left side are slidably connected to the filter assembly. A first belt is slidably connected to the outer wall of the rotating shaft. The inner wall of the first belt away from the rotating shaft is slidably connected to a first connecting rod near the second connecting rod. Gears are fixedly connected to the outer walls of adjacent first and second connecting rods, and the two gears mesh with each other. A sealing assembly is slidably connected to the outer wall of the rotating shaft, and the sealing assembly is located at the front of the rotating shaft.

[0008] Preferably, the filter assembly includes a filter screen slidably connected to the outer wall of the extrusion sleeve. Sealing strips are fixedly connected to both the front and rear sides of the filter screen. A chain is fixedly connected to the side of the sealing strip away from the filter screen. A through slit is opened in the middle of the filter screen or sealing strip in the width direction. The filter screen is kept connected in the length direction through the ends on both sides of the break, so that the filter screen is a whole integrated strip. A connecting strip is fixedly connected to the right cross-section of the filter screen. A buckle is snapped into the inner wall of the filter screen. The buckle is fixedly connected to the right cross-section.

[0009] Preferably, the sealing assembly includes a second belt slidably connected to the outer wall of the rotating shaft, a worm gear slidably connected to the inner wall of the second belt away from the rotating shaft, multiple ball screws rotatably connected to the inner wall of the dust collector, with two ball screws located on the front and rear sides of the cavity respectively, the worm gear meshing with a worm wheel fixedly connected to the outer wall of the ball screw, a movable ring slidably connected to the outer wall of the ball screw via a thread, a roller fixedly connected to the left end of the movable ring, a push plate fixedly connected to the end of the roller away from the movable ring, multiple rollers rotatably connected between the front and rear sides of the push plate away from the ball screw via a shaft, and a third belt slidably connected between the outer walls of the multiple rollers.

[0010] Preferably, the inner wall of the dust collector is provided with a groove that matches the push plate, and the inner wall of the groove is provided with stripes.

[0011] Preferably, the filtration unit includes a water spray pipe fixedly connected to the inner wall of the dust collector, the water spray pipe being fixedly connected to an external water pipe via a flange, a filter box being fixedly connected to the bottom of the dust collector, a filter housing being slidably connected to the bottom of the filter housing, a movable groove matching the filter housing being provided on the inner wall of the filter housing, and a drain pipe being fixedly connected to the inner wall of the filter housing.

[0012] Preferably, a slide rod is fixedly connected to the rear side of the filter box, and a correction rod is slidably connected to the inner wall of the slide rod.

[0013] Preferably, a filter plate is fixedly connected to the bottom surface of the filter box, and a rubber strip is fixedly connected to the front side of the filter plate. The dividing line between the filter plate and the rubber strip is between the two ends of the top surface of the drain pipe.

[0014] A method for blast furnace ironmaking includes the following installation steps:

[0015] S1. When using this device, the exhaust gas needs to be transmitted to the dust settling box through the first exhaust pipe, and then the gas enters the interior of the dust removal unit through the second exhaust pipe for detailed dust removal.

[0016] S2. The gas entering the dust removal unit will undergo a series of cooling processes to ensure that the temperature is not too high. The motor starts and drives a rotating shaft to rotate. The rotation of the rotating shaft drives the two first connecting rods located on the upper left side to rotate through the first belt. The two first connecting rods on the left side drive all the first connecting rods to rotate through the structure of the filter assembly.

[0017] S3. The two first connecting rods on the left drive the second connecting rod to rotate through gears. The unfolded area of ​​the filter assembly completely covers the range of the internal cavity of the dust collector, thereby filtering the gas and preventing gas leakage.

[0018] S4. Start the motor to drive the first connecting rod to move, which can move the filter component at the air outlet inside the cavity, move and replace the filter component within the range of filtering gas for a long time, and squeeze and seal the filter component and dust collector box by setting the structure of the sealing component.

[0019] S5. The compression sleeve, which is fixedly connected to the outer wall of the first connecting rod, compresses the filter assembly to prevent gas leakage. Through the cooperation between the structures, the filter assembly within the filtration range can be moved and replaced quickly, thereby maintaining the dust removal unit at its highest efficiency in removing dust from the gas and extending its service life. This improves the service life of the dust removal structure and the working efficiency of the device.

[0020] The gear end face grinding device and working method provided in this embodiment of the invention have the following advantages:

[0021] 1. Through the cooperation between the structures, the filter components within the filtration range can be moved and replaced quickly, thereby maintaining the dust removal unit at its highest efficiency in removing dust from the gas and extending its service life, thus increasing the service life of the dust removal structure and improving the working efficiency of the device.

[0022] 2. After the disconnected part is conveyed to the top of the dust collection box, the new filter component structure is connected, thus completing the replacement of the filter component structure. The operation is convenient and does not require disassembly of many structures, so it will not affect the dust collection structure used, thereby maintaining the high efficiency of the dust collection structure. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a schematic diagram of the dust removal unit structure of the present invention.

[0025] Figure 3 This is a schematic cross-sectional view of the right-side portion of the structure of the present invention.

[0026] Figure 4 This is a cross-sectional structural diagram of the dust collector and filter box of the present invention.

[0027] Reference numerals: 1. Ironmaking furnace; 2. First exhaust pipe; 3. Dust settling box; 4. Second exhaust pipe; 5. Dust removal unit; 51. Dust removal box; 52. Motor; 53. Rotating shaft; 54. First belt; 55. First connecting rod; 56. Sealing assembly; 561. Second belt; 562. Worm gear; 563. Ball screw; 564. Push plate; 565. Moving ring; 566. Roller; 567. Third belt; 57. Second connecting rod; 58. Extrusion sleeve; 59. Filter assembly; 591. Filter screen; 592. Sealing belt; 593. Connecting belt; 594. Locking block; 595. Chain; 510. Gear; 6. Filter unit; 61. Filter box; 62. Moving groove; 63. Filter box; 64. Sliding rod; 65. Filter plate; 66. Rubber belt; 67. Correction rod; 68. Drain pipe; 69. Water spray pipe. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0029] like Figure 1-4As shown, the present invention is a gear end face grinding device, including an iron smelting furnace 1, a first exhaust pipe 2 fixedly connected to the top surface of the iron smelting furnace 1, a dust settling box 3 fixedly connected to the end of the first exhaust pipe 2 away from the iron smelting furnace 1, a second exhaust pipe 4 fixedly connected to the top of the dust settling box 3 at the right side of the first exhaust pipe 2, a dust removal unit 5 fixedly connected to the end of the second exhaust pipe 4 away from the dust settling box 3, and a filter unit 6 fixedly connected to the bottom surface of the dust removal unit 5.

[0030] The dust removal unit 5 includes a dust removal box 51 fixedly connected to the end of the second exhaust pipe 4 away from the dust settling box 3. The dust removal box 51 has an internal cavity. A motor 52 is fixedly connected to the inner side of the dust removal box 51. A rotating shaft 53 is fixedly connected to the output end of the motor 52. Multiple first connecting rods 55 are rotatably connected to the inner wall of the dust removal box 51. Two second connecting rods 57 are rotatably connected inside the dust removal box 51, with the second connecting rods 57 located to the left of the first connecting rods 55. Extrusion sleeves 58 are fixedly connected to the outer wall of either the first connecting rod 55 or the second connecting rod 57. Six extrusion sleeves are located on the right side. A filter assembly 59 is slidably connected between the outer walls of the compression sleeves 58. The two compression sleeves 58 on the left side are slidably connected to the filter assembly 59. A first belt 54 is slidably connected to the outer wall of the rotating shaft 53. The inner wall of the first belt 54 away from the rotating shaft 53 is slidably connected to the first connecting rod 55 near the second connecting rod 57. Gears 510 are fixedly connected to the outer walls of adjacent first connecting rods 55 and second connecting rods 57, and the two gears 510 mesh with each other. A sealing assembly 56 is slidably connected to the outer wall of the rotating shaft 53, and the sealing assembly 56 is located at the front side of the rotating shaft 53.

[0031] Specifically, when using this device, the exhaust gas needs to be transmitted to the dust settling box 3 through the first exhaust pipe 2. Then, the gas enters the dust removal unit 5 through the second exhaust pipe 4 for detailed dust removal. The gas entering the dust removal unit 5 undergoes a series of cooling processes to ensure that the temperature is not too high. The motor 52 starts and drives the rotating shaft 53 to rotate. The rotation of the rotating shaft 53 drives the two first connecting rods 55 located on the upper left side to rotate through the first belt 54. The two first connecting rods 55 on the left side drive all the first connecting rods 55 to rotate through the structure of the filter assembly 59. The two first connecting rods 55 on the left side are connected through... Gear 510 drives the second connecting rod 57 to rotate, and the unfolded area of ​​the filter assembly 59 completely covers the internal cavity of the dust collector 51, thereby filtering the gas and preventing gas leakage. The start motor 52 drives the first connecting rod 55 to move, which can move the filter assembly 59 located at the air outlet inside the cavity, and move and replace the filter assembly 59 within the range of filtering gas for a long time. The structure of the sealing assembly 56 is used to squeeze and seal the filter assembly 59 and the dust collector 51. The compression sleeve 58 fixedly connected to the outer wall of the first connecting rod 55 squeezes the filter assembly 59 to prevent gas leakage.

[0032] Preferably, the filter assembly 59 includes a filter screen 591 slidably connected to the outer wall of the extrusion sleeve 58. Sealing strips 592 are fixedly connected to both the front and rear sides of the filter screen 591. A chain 595 is fixedly connected to the side of the sealing strip 592 away from the filter screen 591. A through slit is opened from the middle position of the filter screen 591 or the sealing strip 592 in the width direction. The filter screen 591 is kept connected in the length direction through the ends on both sides of the break, so that the filter screen 591 is a whole integrated strip. A connecting strip 593 is fixedly connected to the right cross section of the filter screen 591. A buckle 594 is snapped onto the inner wall of the filter screen 591. The buckle 594 is fixedly connected to the right cross section.

[0033] Specifically, by setting the structure of the filter assembly 59 to be disconnectable and reconnectable, it is easy to replace the filter assembly 59 even if its efficiency decreases after prolonged use and even after filtration at the bottom. The replacement is achieved by manually disconnecting the separation chain 595, then separating the connecting belt 593 and the locking block 594, connecting the new filter assembly 59's connecting belt 593 to the used locking block 594, and temporarily connecting the new chain 595 to the used chain 595. After the disconnected part is conveyed to the top of the dust collection box 51, the new filter assembly 59 is connected, thus completing the replacement of the filter assembly 59. The operation is convenient and does not require disassembling many structures, so it will not affect the dust collection structure and maintain the high efficiency of the dust collection structure.

[0034] Preferably, the sealing assembly 56 includes a second belt 561 slidably connected to the outer wall of the rotating shaft 53, a worm gear 562 slidably connected to the inner wall of the second belt 561 away from the rotating shaft 53, a plurality of ball screws 563 rotatably connected to the inner wall of the dust collector 51, with two ball screws 563 located on the front and rear sides of the cavity respectively, the worm gear 562 and the worm wheel fixedly connected to the outer wall of the ball screw 563 meshing with each other, a moving ring 565 slidably connected to the outer wall of the ball screw 563 by a thread, a roller 566 fixedly connected to the left end of the moving ring 565, a push plate 564 fixedly connected to the end of the roller 566 away from the moving ring 565, a plurality of rollers 566 rotatably connected between the front and rear sides of the push plate 564 away from the ball screw 563 by a shaft, a third belt 567 slidably connected between the outer walls of the plurality of rollers 566, and a groove matching the push plate 564 opened on the inner wall of the dust collector 51, with stripes opened on the inner wall of the groove;

[0035] Specifically, the structure of the rotating shaft 53 drives the worm gear 562 to rotate via the second belt 561. The worm gear 562 drives the ball screw 563 to rotate via meshing. The ball screw 563 drives the moving ring 565 to move left and right. The moving ring 565 drives the roller 566 to move. The roller 566, through its elasticity, drives the push plate 564 to move when the pressure limit is reached. This ensures that the movement of the push plate 564 matches the range of filter assembly 59 replacement. When the motor 52 starts, the first connecting rod 55 drives the filter assembly 59 to move. Then, through the roller 566 and the third belt 567, the filter screen 591 is prevented from deforming due to excessive tension caused by the compression of the third belt 567, thus maintaining the integrity of the filter screen 591. By providing a groove inside the dust collection box 51 that matches the push plate 564 and by creating stripes inside the groove, the stability of the push plate 564's movement is maintained.

[0036] Preferably, the filter unit 6 includes a water spray pipe 69 fixedly connected to the inner wall of the dust collector 51. The water spray pipe 69 is fixedly connected to an external water pipe via a flange. A filter box 61 is fixedly connected to the bottom surface of the dust collector 51. A filter box 63 is slidably connected to the bottom surface of the filter box 61. A moving groove 62 matching the filter box 63 is opened on the inner wall of the filter box 61. A drain pipe 68 is fixedly connected to the inner wall of the filter box 61. A sliding rod 64 is fixedly connected to the rear side of the filter box 63. A correction rod 67 is slidably connected to the inner wall of the sliding rod 64. A filter plate 65 is fixedly connected to the bottom surface of the filter box 63. A rubber belt 66 is fixedly connected to the front side of the filter plate 65. The dividing line between the filter plate 65 and the rubber belt 66 is between the two ends of the top surface of the drain pipe 68.

[0037] Specifically, the structure of the filter unit 6 is used to clean the structure of the filter assembly 59, thereby keeping the surface of the filter screen 591 clean and enabling it to be used for a long time. The structure of the water spray pipe 69 is used to powerfully rinse the surface of the filter screen 591. Then, water flows through a groove on the bottom of the dust collector 51 into a moving groove 62 inside the filter box 61. The liquid entering the moving groove 62 is filtered and retained by the filter material placed on the top surface of the slide rod 64. The filtered liquid then enters the drain pipe 68 through the structure of the filter plate 65. The structure of the filter box 63 is that the front side is a sealing plate, and the remaining connecting surfaces are filter plates. When the structure of the filter box 63 needs to be replaced, the structure of the slide rod 64 and the correction rod 67 maintains the stability of the filter box 63 during movement. The structure of the filter plate 65 and the rubber belt 66 increases the discharge volume of the liquid during the movement of the filter box 63, thereby increasing the speed of moving the filter box 63. The structure of the filter unit 6 facilitates the filtration of the cleaning liquid, and the liquid is discharged through the drain pipe 68 for cooling treatment, thereby maintaining the effective utilization of resources.

[0038] A method for blast furnace ironmaking includes the following installation steps:

[0039] S1. When using this device, the exhaust gas needs to be transmitted to the dust collection box 3 through the first exhaust pipe 2, and then the gas enters the interior of the dust removal unit 5 through the second exhaust pipe 4 for detailed dust removal.

[0040] S2. The gas entering the dust removal unit 5 will undergo a series of cooling processes to ensure that the temperature is not too high. The motor 52 starts and drives the shaft 53 to rotate. The rotation of the shaft 53 drives the two first connecting rods 55 located on the upper left side to rotate through the first belt 54. The two first connecting rods 55 on the left side drive all the first connecting rods 55 to rotate through the structure of the filter assembly 59.

[0041] S3. The two first connecting rods 55 on the left drive the second connecting rod 57 to rotate through the gear 510. The unfolded area of ​​the filter assembly 59 completely covers the range of the internal cavity of the dust collector 51, thereby filtering the gas and preventing gas leakage.

[0042] S4. Start motor 52 drives the first connecting rod 55 to move, which can move the filter component 59 located at the air outlet inside the cavity, move and replace the filter component 59 that has been filtering gas for a long time, and squeeze and seal the filter component 59 and the dust collection box 51 by setting the structure of the sealing component 56.

[0043] S5. The compression sleeve 58, which is fixedly connected to the outer wall of the first connecting rod 55, compresses the filter assembly 59 to prevent gas leakage. Through the cooperation between the structures, the filter assembly 59 within the filtration range can be moved and replaced quickly, thereby maintaining the dust removal unit 5 at its highest efficiency in removing dust from the gas and extending its service life, thus improving the service time of the dust removal structure and the working efficiency of the device.

[0044] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A dust removing device for blast furnace iron making, characterized by, The furnace includes an ironmaking furnace (1), a first exhaust pipe (2) is fixedly connected to the top surface of the ironmaking furnace (1), a dust collection box (3) is fixedly connected to the end of the first exhaust pipe (2) away from the ironmaking furnace (1), a second exhaust pipe (4) is fixedly connected to the top of the dust collection box (3) at the right side of the first exhaust pipe (2), a dust removal unit (5) is fixedly connected to the end of the second exhaust pipe (4) away from the dust collection box (3), and a filter unit (6) is fixedly connected to the bottom surface of the dust removal unit (5). The dust removal unit (5) includes a dust removal box (51) fixedly connected to the end of the second exhaust pipe (4) away from the dust settling box (3). The dust removal box (51) has an internal cavity. A motor (52) is fixedly connected to the inner side of the dust removal box (51). A rotating shaft (53) is fixedly connected to the output end of the motor (52). Multiple first connecting rods (55) are rotatably connected to the inner wall of the dust removal box (51). Two second connecting rods (57) are rotatably connected inside the dust removal box (51), and the second connecting rods (57) are located to the left of the first connecting rods (55). An extrusion sleeve (58) is fixedly connected to the outer wall of either the first connecting rod (55) or the second connecting rod (57). Six on the right side A filter assembly (59) is slidably connected between the outer walls of the extrusion sleeves (58). The two extrusion sleeves (58) on the left side are slidably connected to the filter assembly (59). A first belt (54) is slidably connected to the outer wall of the rotating shaft (53). The inner wall of the first belt (54) away from the rotating shaft (53) is slidably connected to the first connecting rod (55) near the second connecting rod (57). Gears (510) are fixedly connected to the outer walls of adjacent first connecting rods (55) and second connecting rods (57), and the two gears (510) mesh with each other. A sealing assembly (56) is slidably connected to the outer wall of the rotating shaft (53), and the sealing assembly (56) is located at the front side of the rotating shaft (53).

2. The dust removal device for blast furnace ironmaking as described in claim 1, characterized in that: The filter assembly (59) includes a filter screen (591) slidably connected to the outer wall of the extrusion sleeve (58). The filter screen (591) is fixedly connected to both the front and rear sides with sealing strips (592). A chain (595) is fixedly connected to the side of the sealing strip (592) away from the filter screen (591). The filter screen (591) or the sealing strip (592) has a through gap at the middle position in the width direction. The filter screen (591) is connected in the length direction through the ends on both sides of the break, so that the filter screen (591) is a whole integrated belt. A connecting strip (593) is fixedly connected to the right cross section of the filter screen (591). A buckle (594) is snapped onto the inner wall of the filter screen (591). The buckle (594) is fixedly connected to the right cross section.

3. The dust removal device for blast furnace ironmaking as described in claim 1, characterized in that: The sealing assembly (56) includes a second belt (561) slidably connected to the outer wall of the rotating shaft (53). A worm gear (562) is slidably connected to the inner wall of the second belt (561) on the side away from the rotating shaft (53). Multiple ball screws (563) are rotatably connected to the inner wall of the dust collector (51), with two ball screws (563) located on the front and rear sides of the cavity, respectively. The worm gear (562) meshes with the worm wheel fixedly connected to the outer wall of the ball screw (563). (563) A movable ring (565) is slidably connected to the outer wall by a thread. A roller (566) is fixedly connected to the left end of the movable ring (565). A push plate (564) is fixedly connected to the end of the roller (566) away from the movable ring (565). Multiple rollers (566) are rotatably connected between the front and rear sides of the push plate (564) away from the ball screw (563) by a shaft. A third belt (567) is slidably connected between the outer walls of the multiple rollers (566).

4. The dust removal device for blast furnace ironmaking as described in claim 1, characterized in that: The dust collector (51) has a groove on its inner wall that matches the push plate (564), and the inner wall of the groove has stripes.

5. The dust removal device for blast furnace ironmaking as described in claim 1, characterized in that: The filter unit (6) includes a water spray pipe (69) fixedly connected to the inner wall of the dust collector (51). The water spray pipe (69) is fixedly connected to an external water pipe via a flange. A filter box (61) is fixedly connected to the bottom surface of the dust collector (51). A filter box (63) is slidably connected to the bottom surface of the filter box (61). A moving groove (62) matching the filter box (63) is opened on the inner wall of the filter box (61). A drain pipe (68) is fixedly connected to the inner wall of the filter box (61).

6. The dust removal device for blast furnace ironmaking as described in claim 5, characterized in that: A slide rod (64) is fixedly connected to the rear side of the filter box (63), and a correction rod (67) is slidably connected to the inner wall of the slide rod (64).

7. The dust removal device for blast furnace ironmaking as described in claim 5, characterized in that: A filter plate (65) is fixedly connected to the bottom surface of the filter box (63), and a rubber strip (66) is fixedly connected to the front side of the filter plate (65). The dividing line between the filter plate (65) and the rubber strip (66) is between the two ends of the top surface of the drain pipe (68).

8. A method for operating a blast furnace ironmaking process, using a blast furnace ironmaking dust removal device as described in any one of claims 1-7, characterized in that: The installation steps include the following: S1. When using this device, the exhaust gas needs to be transmitted to the dust collection box 3 through the first exhaust pipe 2, and then the gas enters the interior of the dust removal unit 5 through the second exhaust pipe 4 for detailed dust removal. S2. The gas entering the dust removal unit 5 will undergo a series of cooling processes to ensure that the temperature is not too high. The motor 52 starts and drives the shaft 53 to rotate. The rotation of the shaft 53 drives the two first connecting rods 55 located on the upper left side to rotate through the first belt 54. The two first connecting rods 55 on the left side drive all the first connecting rods 55 to rotate through the structure of the filter assembly 59. S3. The two first connecting rods 55 on the left drive the second connecting rod 57 to rotate through the gear 510. The unfolded area of ​​the filter assembly 59 completely covers the range of the internal cavity of the dust collector 51, thereby filtering the gas and preventing gas leakage. S4. Start motor 52 drives the first connecting rod 55 to move, which can move the filter component 59 located at the air outlet inside the cavity, move and replace the filter component 59 that has been filtering gas for a long time, and squeeze and seal the filter component 59 and the dust collection box 51 by setting the structure of the sealing component 56. S5. The compression sleeve 58, which is fixedly connected to the outer wall of the first connecting rod 55, compresses the filter assembly 59 to prevent gas leakage. Through the cooperation between the structures, the filter assembly 59 within the filtration range can be moved and replaced quickly, thereby maintaining the dust removal unit 5 at its highest efficiency in removing dust from the gas and extending its service life, thus improving the service time of the dust removal structure and the working efficiency of the device.

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