A blast furnace swing nozzle soot collection device

Abstract

The present invention relates to the technical field of dust treatment for the swinging nozzle of a blast furnace, and specifically refers to a dust collection device for the swinging nozzle of a blast furnace, comprising: a frame body; a top plate fixedly connected to the top of the frame body; four observation holes opened on the top plate; a bottom plate fixedly connected to the bottom of the frame body; a nozzle body arranged inside the frame body; through the cooperation of the flowing nozzle body, refractory buffer layer, steel shell and steel reinforcement cage, a layer of refractory bricks is laid inside the steel shell of the swinging nozzle body, and the brick joints of the refractory bricks are filled with fireproof cotton, and the brick joints are controlled within 5 mm. The refractory bricks and fireproof cotton are used to buffer the expansion stress and water analysis generated during the baking of the swinging castable, further release the expansion stress, and reduce the generation of cracks in the thick refractory materials on both sides of the swing. A steel reinforcement cage is added at the bottom of the steel shell, and the steel reinforcement cage is made of 10 mm steel bars with a spacing of 160 mm. The steel reinforcement cage is used to further tighten the refractory materials, reduce the possibility of crack generation, and achieve the protection of the nozzle body.

Description

Technical Field

[0001] The present invention relates to the technical field of blast furnace swing nozzle dust treatment, and in particular to a blast furnace swing nozzle dust collection device. Background Art

[0002] During the process of hot metal flowing from the iron runner into the swing nozzle and pouring from the swing nozzle into the hot metal ladle car in the blast furnace, there are two relatively large height differences. The hot metal has a high speed and large flow rate. The high-temperature hot metal contacts the surrounding air for a short time, forming a strong thermal plume phenomenon and generating a large amount of dust. In addition, in order to facilitate operation and maintenance, an open observation hole is provided on the swing nozzle cover plate. Therefore, a large amount of flue gas often escapes from the observation hole, which not only affects the environmental hygiene of the workshop but also often causes the operator to be unable to observe the molten steel flow situation in time, resulting in production accidents.

[0003] A Chinese patent with the publication number CN102134623B discloses a blast furnace swing nozzle dust collection hood, which includes a frame. The frame is a rectangular concrete structure wall. Exhaust ports are provided on the concrete structure walls of both long sides. One end of the exhaust port is connected to an exhaust pipe, and the other end of the exhaust pipe is connected to an exhaust fan; a top cover is provided at the upper end of the frame, and an observation hole is provided on the top cover. The bottom end of the frame is fixed on the support legs. The swing nozzle is arranged inside the frame. The output port of the iron runner groove passes through the frame and is located inside the frame, and the output port of the iron runner groove is located above the swing nozzle; the hot metal ladle cars are arranged below both ends of the swing nozzle; the invention has a simple structure. Through the setting of the bottom plate and the exhaust port, the dust overflow of the swing nozzle is effectively prevented, the operation environment of workers is greatly improved, and the labor efficiency of workers is improved.

[0004] In the current prior art, the swing nozzle is an important device for tapping iron in front of the blast furnace. During the baking process, due to the influence of factors such as the refractory thickness and baking process, longitudinal cracks will occur on both sides of the swing nozzle. When the swing nozzle is eroded during tapping and enters the cracks, it will affect the service life of the swing, and seriously cause accidents such as hot metal spilling to the ground.

[0005] Therefore, the present invention provides a blast furnace swing nozzle dust collection device. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art that the swing nozzle is an important device for tapping iron in front of the blast furnace. During the baking process, due to the influence of factors such as the refractory thickness and baking process, longitudinal cracks will occur on both sides of the swing nozzle. When the swing nozzle is eroded during tapping and enters the cracks, it will affect the service life of the swing, and seriously cause accidents such as hot metal spilling to the ground.

[0007] To solve the above technical problems, the present invention provides a blast furnace swing nozzle dust collection device, including:

[0008] Frame;

[0009] Top plate fixedly connected to the top of the frame;

[0010] Four observation holes opened on the top plate;

[0011] Bottom plate fixedly connected to the bottom of the frame;

[0012] Nozzle body arranged inside the frame;

[0013] A connecting block is fixedly connected to the bottom of the nozzle body. A first motor is fixedly connected to the outer side wall of the frame. The output shaft of the first motor is rotatably connected to the frame through a bearing. The output shaft of the first motor extends to the inner side wall of the frame far from the first motor through a connecting rod; the connecting block is fixedly connected to the connecting rod; iron discharge ports are opened at both ends of the nozzle body. The nozzle body sequentially includes a refractory buffer layer, a steel shell, and a steel reinforcement cage from inside to outside; the refractory buffer layer includes refractory bricks fixedly connected to the inner wall of the steel shell. The brick joints of the refractory bricks are filled with fireproof cotton, and a refractory material is coated on the inner side wall of the refractory bricks; the steel reinforcement cage is fixedly connected to the outer side wall of the steel shell; an iron discharge trough is fixedly connected and communicated to the inner side wall of the frame, and one end of the iron discharge trough is directly above the nozzle body.

[0014] In an embodiment of the present invention, two mounting plates are fixedly connected to the top of the bottom plate. A gear is rotatably connected between the two mounting plates through a rotating shaft. A semi-toothed ring is fixedly connected to the outer side wall of the connecting block, and the semi-toothed ring meshes with the gear.

[0015] In an embodiment of the present invention, two discharge ports are opened on the bottom plate, and the two discharge ports are respectively matched with the iron discharge ports; a plurality of baking pipes are fixedly connected to the inner wall of the bottom plate, and the baking pipes include a straight pipe and a longitudinal pipe fixedly connected and communicated.

[0016] In an embodiment of the present invention, two blanking cylinders are fixedly connected to the bottom of the bottom plate. The blanking cylinders are respectively matched with the discharge ports and have a cross-sectional area larger than that of the discharge ports; lifting frames are slidably connected to the outer side walls of the blanking cylinders.

[0017] In an embodiment of the present invention, molten iron ladle cars are arranged below the blanking cylinders. Limit grooves are fixedly connected to the outer side walls of the molten iron ladle cars. The blanking cylinders are respectively matched with the molten iron ladle cars, and the limit grooves are respectively matched with the lifting frames; four moving wheels are installed at the bottoms of the molten iron ladle cars; two guide rails are arranged below the molten iron ladle cars, and the moving wheels roll on the guide rails respectively.

[0018] In an embodiment of the present invention, an installation frame is fixedly connected to the bottom of the bottom plate; two reciprocating lead screws are rotatably connected to the installation frame through bearings, the tops of the reciprocating lead screws are rotatably connected to the bottom of the bottom plate through bearings, and two connecting plates are fixedly connected between the two lifting frames, and the connecting plates are respectively threadedly connected to the reciprocating lead screws; the bottoms of the reciprocating lead screws are fixedly connected with runners, and a belt is sleeved between the two runners; an L-shaped plate is fixedly connected to the bottom of the installation frame, and a second motor is fixedly connected to the L-shaped plate, and the output shaft of the second motor is fixedly connected to one end of the reciprocating lead screw.

[0019] In an embodiment of the present invention, two fixing plates are respectively fixedly connected to the two side walls of the lifting frame; a plurality of sliding columns are fixedly connected to the bottom of the bottom plate, and the fixing plates are respectively slidably connected to the sliding columns.

[0020] In an embodiment of the present invention, two side plates are fixedly connected to the side wall of the frame body, blowers are fixedly connected to the side plates, two air outlet pipes are communicated and fixedly connected to the side wall of the frame body, and one end of each air outlet pipe is installed on the blower; the tops of the blowers are communicated and fixedly connected with air delivery pipes, smoke elimination barrels are respectively arranged on both sides of the frame body, one end of the air delivery pipe is inserted into the smoke elimination barrel, and smoke elimination liquid is arranged in the smoke elimination barrel.

[0021] In an embodiment of the present invention, Y-shaped filters are installed on the air outlet pipes, and filter covers are threadedly connected to one ends of the Y-shaped filters.

[0022] In an embodiment of the present invention, four support columns are fixedly connected to the bottom of the bottom plate, and the support columns are respectively arranged at the four corners of the bottom plate.

[0023] The above technical solution of the present invention has the following advantages compared with the prior art:

[0024] For a blast furnace swing nozzle smoke and dust collection device of the present invention, through the cooperation of a flowing nozzle body, a refractory buffer layer, a steel shell and a steel reinforcement cage, a layer of refractory bricks is laid inside the steel shell of the swing nozzle body, the brick joints of the refractory bricks are filled with fireproof cotton, and the brick joints are controlled within 5 mm. The refractory bricks and fireproof cotton are used to buffer the expansion stress and water analysis generated during the baking of the swing casting material, further release the expansion stress, and reduce the generation of cracks in the thick refractory materials on both sides of the swing; a steel reinforcement cage is added at the bottom of the steel shell, and the steel reinforcement cage is made of 10 mm steel bars with a spacing of 160 mm. The steel reinforcement cage is used to further tighten the refractory materials and reduce the possibility of crack generation; when tapping molten iron, the molten iron flows from the blast furnace through the tapping trough to the nozzle body through the set time, the nozzle body can be rotated, the molten iron flows out from the tapping port, the nozzle body is restored, and tapping continues. Then the nozzle body is turned to another molten iron ladle car until all the molten iron ladle cars are full; through the arrangement of the refractory buffer layer and the steel reinforcement cage, the protection of the nozzle body is realized.

[0025] A kind of smoke and dust collection device for the swinging nozzle of a blast furnace according to the present invention, through the cooperation of a rotating wheel, a belt and a reciprocating lead screw. When the molten iron ladle car moves to directly below the blanking cylinder, it is necessary to insert the bottom of the lifting frame into the limiting groove. By starting the second motor, the output shaft of the second motor drives the connected reciprocating lead screw to rotate. The reciprocating lead screw drives the connected rotating wheel to rotate. This rotating wheel drives another rotating wheel to rotate through the belt. When this rotating wheel rotates, it drives the connected reciprocating lead screw to rotate, so as to realize the synchronous rotation of the two reciprocating lead screws. The reciprocating lead screw drives the connecting plate to move up and down, and the connecting plate drives the lifting frame to move up and down. When the lifting frame descends into the limiting groove and cooperates with the limiting groove, it can prevent the smoke and dust from overflowing; when the lifting frame rises to the bottom plate, the limit on the molten iron ladle car is released, and the molten iron ladle car can move.

[0026] A kind of smoke and dust collection device for the swinging nozzle of a blast furnace according to the present invention, through the cooperation of a blower and a smoke elimination barrel. When the molten iron flows from the tapping trough into the nozzle body, smoke and dust will be generated. When the molten iron flows through the nozzle body to the molten iron ladle car, smoke and dust will also be generated. Through the cooperation of the frame body, the top plate and the bottom plate, the smoke and dust are collected into the frame body. By starting the blower, under the action of the blower, the smoke and dust are quickly sucked out through the air outlet pipe, and then transported to the smoke elimination barrel through the air delivery pipe. The smoke and dust enter the smoke elimination liquid to eliminate the smoke and dust. The setting of the blower not only accelerates the air flow, but also makes a negative pressure generated in the frame body, so that the smoke and dust in the frame body will not be discharged from the observation hole, reducing environmental pollution and maintaining the visual observation of the staff. Brief Description of the Drawings

[0027] In order to make the content of the present invention easier to be clearly understood, the following further describes the present invention in detail according to the specific embodiments of the present invention and in conjunction with the drawings.

[0028] Figure 1 is the three-dimensional view of the present invention;

[0029] Figure 2 is the partial three-dimensional view of the present invention;

[0030] Figure 3 is the sectional view of the present invention;

[0031] Figure 4 is the three-dimensional view of the gear and the semi-tooth ring in the present invention;

[0032] Figure 5 is the three-dimensional view of the molten iron viewing ladle car in the present invention;

[0033] Figure 6 is the three-dimensional view of the lifting frame and the blanking cylinder in the present invention;

[0034] Figure 7 is the three-dimensional view of the limiting groove in the present invention;

[0035] Figure 8 is a perspective view of the smoke elimination barrel in the present invention;

[0036] Explanation of reference numerals in the drawings of the specification: 1. Frame body; 11. Top plate; 12. Bottom plate; 13. Observation hole; 14. Support column; 15. Baking pipe; 16. Discharge port; 2. Tap trough; 3. First motor; 31. Nozzle body; 311. Refractory buffer layer; 312. Steel shell; 313. Steel reinforcement cage; 32. Tap hole; 33. Connecting block; 34. Half gear ring; 35. Gear; 36. Mounting plate; 4. Guide rail; 41. Ladle car; 42. Limit groove; 43. Moving wheel; 44. Lifting frame; 441. Fixed plate; 442. Slide column; 45. L-shaped plate; 451. Second motor; 452. Reciprocating lead screw; 453. Mounting bracket; 454. Connecting plate; 455. Runner; 456. Belt; 46. Feeding cylinder; 5. Exhaust pipe; 51. Y-type filter; 52. Blower; 53. Air delivery pipe; 54. Smoke elimination barrel; 55. Side plate. Detailed implementation manners

[0037] The present invention will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited are not intended to limit the present invention.

[0038] Please refer to Figure 1 - Figure 8 , the present invention provides a smoke and dust collection device for a swinging nozzle of a blast furnace, including: a frame body 1; a top plate 11 fixedly connected to the top of the frame body 1; four observation holes 13 opened on the top plate 11; a bottom plate 12 fixedly connected to the bottom of the frame body 1; a nozzle body 31 arranged inside the frame body 1; a connecting block 33 fixedly connected to the bottom of the nozzle body 31, an outer side wall of the frame body 1 is fixedly connected with a first motor 3, an output shaft of the first motor 3 is rotatably connected to the frame body 1 through a bearing, and the output shaft of the first motor 3 extends to an inner side wall of the frame body 1 far from the first motor 3 through a connecting rod; the connecting block 33 is fixedly connected to the connecting rod; tap holes 32 are opened at both ends of the nozzle body 31, and the nozzle body 31 sequentially includes a refractory buffer layer 311, a steel shell 312 and a steel reinforcement cage 313 from inside to outside; the refractory buffer layer 311 includes refractory bricks fixedly connected to the inner wall of the steel shell 312, the brick joints of the refractory bricks are filled with fireproof cotton, and a refractory material is coated on the inner side wall of the refractory bricks; the steel reinforcement cage 313 is fixedly connected to the outer side wall of the steel shell 312; an inner side wall of the frame body 1 is fixedly connected and communicated with a tap trough 2, and one end of the tap trough 2 is directly above the nozzle body 31.

[0039] When the nozzle body 31 provided by the present invention is in use, the nozzle body 31 sequentially includes a refractory buffer layer 311, a steel shell 312, and a steel reinforcement cage 313 from the inside to the outside. By providing the refractory buffer layer 311, a layer of refractory bricks is laid inside the steel shell 312 of the swinging nozzle body 31, and the joints of the refractory bricks are filled with fireproof cotton, and the joints are controlled within 5 mm. The refractory bricks and fireproof cotton are used to buffer the expansion stress and water analysis generated during the baking of the swinging castable, further release the expansion stress, and reduce the generation of cracks in the thick refractory materials on both sides of the swing; a steel reinforcement cage 313 is added at the bottom of the steel shell 312, and the steel reinforcement cage 313 is made of 10 mm steel bars with a spacing of 160 mm. The steel reinforcement cage 313 is used to further tighten the refractory materials and reduce the possibility of crack generation; when tapping the molten iron, the molten iron flows from the blast furnace through the tapping trough 2 to the nozzle body 31 for a set time, then the nozzle body 31 can be rotated, the molten iron flows out from the tapping port 32, the nozzle body 31 is restored, and tapping continues. Then the nozzle body 31 is turned to another molten iron ladle car 41 until all the molten iron ladle cars 41 are filled; through the settings of the refractory buffer layer 311 and the steel reinforcement cage 313, the protection of the nozzle body 31 is realized; through the settings of the frame 1, the top plate 11, and the bottom plate 12, the soot is trapped inside the frame 1 to prevent overflow; through the setting of the blower 52, not only the air flow is accelerated, but also a negative pressure is generated inside the frame 1, and the soot inside the frame 1 will not be discharged from the observation hole 13.

[0040] Further, as Figure 3 and Figure 4 shown, two mounting plates 36 are fixedly connected to the top of the bottom plate 12, a gear 35 is rotatably connected between the two mounting plates 36 through a rotating shaft, a semi-toothed ring 34 is fixedly connected to the outer side wall of the connecting block 33, and the semi-toothed ring 34 meshes with the gear 35.

[0041] When the semi-toothed ring 34 and the gear 35 provided by the present invention are in use, during the process of driving the nozzle body 31 to rotate, by turning on the first motor 3, the first motor 3 drives the connecting rod to rotate through the output shaft, drives the connecting block 33 to drive the semi-toothed ring 34 to rotate through the connecting rod, drives the gear 35 to rotate through the semi-toothed ring 34, and the semi-toothed ring 34 and the gear 35 cooperate to provide a support point for the nozzle body 31 to prevent the nozzle body 31 from getting out of control during the rotation due to the excessive weight of the molten iron inside.

[0042] Further, as Figure 2 and Figure 3 shown, two discharge ports 16 are opened on the bottom plate 12, and the two discharge ports 16 are respectively matched with the tapping ports 32; a plurality of baking pipes 15 are fixedly connected to the inner wall of the bottom plate 12, and the baking pipes 15 include a straight pipe and a longitudinal pipe connected and fixed.

[0043] When the baking tube 15 provided by the present invention is in use, by adding longitudinal baking tubes 15 on both sides of the straight tube, the baking area on both sides of the nozzle body 31 is increased, avoiding the phenomenon of cracks caused by too thick refractory material and uneven heat absorption, thereby improving the swinging baking tube 15 mode. By opening a discharge port 16 on the bottom plate 12, and the discharge port 16 is matched with the tapping hole 32, it is avoided that the discharge port 16 is too small and the molten iron splashes onto the bottom plate 12.

[0044] Further, as Figure 3 and Figure 6 shown, two discharge cylinders 46 are fixedly connected to the bottom of the bottom plate 12. The discharge cylinders 46 are all matched with the discharge port 16, and the cross-sectional area is larger than that of the discharge port 16; lifting frames 44 are slidably connected to the outer side walls of the discharge cylinders 46.

[0045] When the discharge cylinder 46 provided by the present invention is in use, the cross-sectional area of the discharge cylinder 46 is larger than that of the discharge port 16, reducing the molten iron splashing on the inner wall of the discharge cylinder 46. By setting the lifting frame 44, the area of smoke and dust protection is enlarged.

[0046] Further, as Figure 3 and Figure 5 shown, molten iron ladle cars 41 are arranged below the discharge cylinders 46. Limit grooves 42 are fixedly connected to the outer side walls of the molten iron ladle cars 41. The discharge cylinders 46 are all matched with the molten iron ladle cars 41, and the limit grooves 42 are all matched with the lifting frames 44; four moving wheels 43 are installed at the bottoms of the molten iron ladle cars 41; two guide rails 4 are arranged below the molten iron ladle cars 41, and the moving wheels 43 roll on the guide rails 4 respectively.

[0047] When the molten iron ladle car 41 provided by the present invention is in use, the cross-sectional area of the molten iron ladle car 41 is slightly larger than that of the discharge cylinder 46 to ensure the inflow of molten iron. During tapping, the bottom of the lifting frame 44 is inserted into the limit groove 42 to prevent the smoke and dust generated when the molten iron contacts the molten iron ladle car 41 from overflowing; by setting the moving wheels 43 and the guide rails 4, it is convenient for the movement of the molten iron ladle car 41.

[0048] Further, as Figure 6 and Figure 7As shown in the figure, an installation frame 453 is fixedly connected to the bottom of the bottom plate 12; two reciprocating lead screws 452 are rotatably connected to the installation frame 453 through bearings, the tops of the reciprocating lead screws 452 are rotatably connected to the bottom of the bottom plate 12 through bearings, and two connecting plates 454 are fixedly connected between the two lifting frames 44. The connecting plates 454 are respectively threadedly connected to the reciprocating lead screws 452; the bottoms of the reciprocating lead screws 452 are fixedly connected with runner wheels 455, and a belt 456 is sleeved between the two runner wheels 455; the bottom of the installation frame 453 is fixedly connected with an L-shaped plate 45, and a second motor 451 is fixedly connected to the L-shaped plate 45. The output shaft of the second motor 451 is fixedly connected to one end of the reciprocating lead screw 452.

[0049] When the runner wheels 455, the belt 456 and the reciprocating lead screws 452 provided by the present invention are in use, when the molten iron ladle car 41 moves to directly below the blanking cylinder 46, it is necessary to insert the bottom of the lifting frame 44 into the limiting groove 42. By turning on the second motor 451, the output shaft of the second motor 451 drives the connected reciprocating lead screw 452 to rotate. The reciprocating lead screw 452 drives the connected runner wheel 455 to rotate. This runner wheel 455 drives another runner wheel 455 to rotate through the belt 456. When this runner wheel 455 rotates, it drives the connected reciprocating lead screw 452 to rotate, so as to realize the synchronous rotation of the two reciprocating lead screws 452. The reciprocating lead screw 452 drives the connecting plate 454 to move up and down, and the connecting plate 454 drives the lifting frame 44 to move up and down. When the lifting frame 44 descends into the limiting groove 42 and cooperates with the limiting groove 42, it can prevent the smoke and dust from overflowing; when the lifting frame 44 rises to the bottom plate 12, the limiting of the molten iron ladle car 41 is released, and the molten iron ladle car 41 can move.

[0050] Further, as Figure 6 shown, two fixing plates 441 are respectively fixedly connected to the two side walls of the lifting frame 44; a plurality of sliding columns 442 are fixedly connected to the bottom of the bottom plate 12, and the fixing plates 441 are respectively slidably connected to the sliding columns 442.

[0051] When the sliding columns 442 provided by the present invention are in use, during the movement of the lifting frame 44, the fixing plates 441 are driven to move up and down. During the movement, the fixing plates 441 slide on the sliding columns 442, and the sliding columns 442 limit the fixing plates 441 in the vertical direction.

[0052] Further, as Figure 8As shown in the figure, two side plates 55 are fixedly connected to the side wall of the frame body 1. Blowers 52 are fixedly connected to the side plates 55. Two air outlet pipes 5 are connected and fixedly connected to the side wall of the frame body 1. One ends of the air outlet pipes 5 are respectively installed on the blowers 52. The top ends of the blowers 52 are respectively connected and fixedly connected with air delivery pipes 53. Smoke elimination barrels 54 are respectively arranged on both sides of the frame body 1. One end of the air delivery pipe 53 is inserted into the smoke elimination barrel 54, and smoke elimination liquid is arranged in the smoke elimination barrel 54.

[0053] When the blower 52 provided by the present invention is in use, when the molten iron flows from the tapping trough 2 into the nozzle body 31, smoke and dust will be generated. When the molten iron flows through the nozzle body 31 to the molten iron tank car 41, smoke and dust will also be generated. Through the cooperation of the frame body 1, the top plate 11 and the bottom plate 12, the smoke and dust are collected into the frame body 1. By starting the blower 52, under the action of the blower 52, the smoke and dust are quickly sucked out through the air outlet pipe 5, and then conveyed to the smoke elimination barrel 54 through the air delivery pipe 53. The smoke and dust enter the smoke elimination liquid, and the smoke and dust are eliminated, reducing environmental pollution and maintaining the visual observation of the staff.

[0054] Further, as Figure 8 shown, Y-shaped filters 51 are installed on the air outlet pipes 5, and filter covers are threadedly connected to one ends of the Y-shaped filters 51.

[0055] When the Y-shaped filter 51 provided by the present invention is in use, by arranging the Y-shaped filter 51, the particulate impurities in the smoke and dust are quickly filtered, realizing the function of filtering the smoke and dust.

[0056] Further, as Figure 1 shown, four support columns 14 are fixedly connected to the bottom of the bottom plate 12, and the support columns 14 are respectively arranged at the four corners of the bottom plate 12.

[0057] When the support column 14 provided by the present invention is in use, by arranging the support column 14 for supporting the bottom plate 12 and the frame body 1, sufficient space is also provided below the bottom plate 12, facilitating the movement of the molten iron tank car 41.

[0058] Working principle: The nozzle body 31 successively includes a refractory buffer layer 311, a steel shell 312, and a steel reinforcement cage 313 from the inside to the outside. By setting the refractory buffer layer 311, a layer of refractory bricks is laid inside the steel shell 312 of the swing nozzle body 31, and the joints of the refractory bricks are filled with fireproof cotton, with the joint width controlled within 5 mm. The refractory bricks and fireproof cotton are used to buffer the expansion stress and water analysis generated during the baking of the swing casting material, further releasing the expansion stress and reducing the generation of cracks in the thick refractories on both sides of the swing. A steel reinforcement cage 313 is added at the bottom of the steel shell 312. The steel reinforcement cage 313 is made of 10-mm steel bars with a spacing of 160 mm. The steel reinforcement cage 313 is used to further tighten the refractories and reduce the possibility of crack generation. When tapping, the molten iron flows from the blast furnace through the tapping trough 2 to the nozzle body 31. After flowing for a set time, the nozzle body 31 can be rotated. The molten iron flows out from the tapping port 32, and then the nozzle body 31 is restored to continue tapping. Then the nozzle body 31 is turned to another molten iron ladle car 41 until all the molten iron ladle cars 41 are filled. Through the settings of the refractory buffer layer 311 and the steel reinforcement cage 313, the protection of the nozzle body 31 is realized. Through the settings of the frame 1, the top plate 11, and the bottom plate 12, the soot is captured inside the frame 1 to prevent spillage.

[0059] During the process of driving the nozzle body 31 to rotate, by starting the first motor 3, the first motor 3 drives the connecting rod to rotate through the output shaft, drives the connecting block 33 to drive the semi-toothed ring 34 to rotate through the connecting rod, and drives the gear 35 to rotate through the semi-toothed ring 34. The semi-toothed ring 34 and the gear 35 cooperate to provide a support point for the nozzle body 31, preventing the nozzle body 31 from losing control during rotation due to the excessive weight of the molten iron inside.

[0060] When the molten iron ladle car 41 moves to directly below the feeding cylinder 46, the bottom of the lifting frame 44 needs to be inserted into the limiting groove 42. By starting the second motor 451, the output shaft of the second motor 451 drives the connected reciprocating lead screw 452 to rotate. The reciprocating lead screw 452 drives the connected runner 455 to rotate. This runner 455 drives another runner 455 to rotate through the belt 456. When this runner 455 rotates, it drives the connected reciprocating lead screw 452 to rotate, thus realizing the synchronous rotation of the two reciprocating lead screws 452. The reciprocating lead screw 452 drives the connecting plate 454 to move up and down. The connecting plate 454 drives the lifting frame 44 to move up and down. When the lifting frame 44 descends into the limiting groove 42 and cooperates with the limiting groove 42, it can prevent the soot from spilling. When the lifting frame 44 rises to the bottom plate 12, the limit on the molten iron ladle car 41 is released, and the molten iron ladle car 41 can move.

[0061] When the molten iron flows from the tapping trough 2 into the nozzle body 31, smoke and dust will be generated. When the molten iron flows through the nozzle body 31 into the molten iron ladle car 41, smoke and dust will also be generated. Through the cooperation of the frame body 1, the top plate 11 and the bottom plate 12, the smoke and dust are captured into the frame body 1. By turning on the blower 52, under the action of the blower 52, the smoke and dust are quickly sucked out through the air outlet pipe 5, and then transported to the smoke elimination barrel 54 through the air delivery pipe 53. The smoke and dust enter the smoke elimination liquid to eliminate the smoke and dust. The setting of the blower 52 not only accelerates the air flow, but also creates a negative pressure in the frame body 1, so that the smoke and dust in the frame body 1 will not be discharged from the observation hole 13, reducing environmental pollution and maintaining the visual observation of the staff.

[0062] Obviously, the above embodiments are only examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A fume collection device for a swinging nozzle of a blast furnace, comprising: a frame body (1); a top plate (11) fixedly connected to the top of the frame body (1); four observation holes (13) opened on the top plate (11); a bottom plate (12) fixedly connected to the bottom of the frame body (1); a nozzle body (31) arranged inside the frame body (1); It is characterized in that: a connecting block (33) is fixedly connected to the bottom of the nozzle body (31), a first motor (3) is fixedly connected to the outer side wall of the frame body (1), the output shaft of the first motor (3) is rotatably connected to the frame body (1) through a bearing, and the output shaft of the first motor (3) extends to the inner side wall of the frame body (1) far from the first motor (3) through a connecting rod; the connecting block (33) is fixedly connected to the connecting rod; iron tapping openings (32) are opened at both ends of the nozzle body (31), and the nozzle body (31) sequentially includes a refractory buffer layer (311), a steel shell (312) and a steel reinforcement cage (313) from inside to outside; the refractory buffer layer (311) includes refractory bricks fixedly connected to the inner wall of the steel shell (312), the brick joints of the refractory bricks are filled with fireproof cotton, and a refractory material is coated on the inner side wall of the refractory bricks; the steel reinforcement cage (313) is fixedly connected to the outer side wall of the steel shell (312); an iron tapping trough (2) is fixedly connected and communicated to the inner side wall of the frame body (1), and one end of the iron tapping trough (2) is directly above the nozzle body (31); Two mounting plates (36) are fixedly connected to the top of the bottom plate (12), a gear (35) is rotatably connected between the two mounting plates (36) through a rotating shaft, a semi-tooth ring (34) is fixedly connected to the outer side wall of the connecting block (33), and the semi-tooth ring (34) meshes with the gear (35); Two discharge ports (16) are opened on the bottom plate (12), and the two discharge ports (16) are respectively matched with the iron tapping openings (32); a plurality of baking pipes (15) are fixedly connected to the inner wall of the bottom plate (12), and the baking pipes (15) include a straight pipe and a longitudinal pipe fixedly connected and communicated; Two blanking cylinders (46) are fixedly connected to the bottom of the bottom plate (12), the blanking cylinders (46) are respectively matched with the discharge ports (16), and the cross-sectional area is larger than that of the discharge ports (16); lifting frames (44) are slidably connected to the outer side walls of the blanking cylinders (46); A molten iron ladle car (41) is arranged below each of the blanking cylinders (46), a limiting groove (42) is fixedly connected to the outer side wall of each of the molten iron ladle cars (41), the blanking cylinders (46) are respectively matched with the molten iron ladle cars (41), and the limiting grooves (42) are respectively matched with the lifting frames (44); four moving wheels (43) are installed at the bottom of each of the molten iron ladle cars (41); two guide rails (4) are arranged below each of the molten iron ladle cars (41), and the moving wheels (43) roll on the guide rails (4) respectively; The bottom of the bottom plate (12) is fixedly connected with a mounting frame (453); two reciprocating lead screws (452) are rotatably connected to the mounting frame (453) through bearings, the tops of the reciprocating lead screws (452) are rotatably connected to the bottom of the bottom plate (12) through bearings, and two connecting plates (454) are fixedly connected between the two lifting frames (44), and the connecting plates (454) are respectively threadedly connected to the reciprocating lead screws (452); the bottoms of the reciprocating lead screws (452) are fixedly connected with runners (455), and a belt (456) is sleeved between the two runners (455); the bottom of the mounting frame (453) is fixedly connected with an L-shaped plate (45), and a second motor (451) is fixedly connected to the L-shaped plate (45), and the output shaft of the second motor (451) is fixedly connected to one end of the reciprocating lead screw (452).

2. The blast furnace swing nozzle dust collection device according to claim 1, characterized in that: Two fixing plates (441) are respectively fixedly connected to the two side walls of the lifting frame (44); a plurality of sliding columns (442) are fixedly connected to the bottom of the bottom plate (12), and the fixing plates (441) are respectively slidably connected to the sliding columns (442).

3. The fume collection device for a swinging nozzle of a blast furnace according to claim 2, characterized in that: Two side plates (55) are fixedly connected to the side wall of the frame body (1), blowers (52) are fixedly connected to the side plates (55), two air outlet pipes (5) are connected and fixed to the side wall of the frame body (1) in a communicating manner, and one ends of the air outlet pipes (5) are respectively installed on the blowers (52); air delivery pipes (53) are connected and fixed to the tops of the blowers (52) in a communicating manner, smoke elimination barrels (54) are respectively arranged on both sides of the frame body (1), one ends of the air delivery pipes (53) are inserted into the smoke elimination barrels (54), and smoke elimination liquid is arranged in the smoke elimination barrels (54).

4. The fume collection device for a swinging nozzle of a blast furnace according to claim 3, wherein: Y-shaped filters (51) are installed on the air outlet pipes (5), and filter covers are threadedly connected to one ends of the Y-shaped filters (51).

5. The blast furnace swing nozzle soot collection device according to claim 4, characterized in that: Four support columns (14) are fixedly connected to the bottom of the bottom plate (12), and the support columns (14) are respectively arranged at the four corners of the bottom plate (12).

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