Cooling device for steel blast furnace production

Abstract

The invention discloses a cooling device for steel blast furnace production, relates to the technical field of steel blast furnaces, and aims to solve the problems that when an existing blast furnace is cooled, only cooling liquid is sprayed outside or inside to cool the blast furnace, but the cooling mode is not uniform, the service life of the blast furnace is easily shortened, and the service life of the blast furnace is influenced. The blast furnace comprises a blast furnace body, a circular groove is formed in the upper end of the blast furnace body, and the circular groove communicates with the interior of the blast furnace body; the rotating disc is arranged above the blast furnace body, connecting plates are symmetrically distributed on the periphery of the outer portion of the bottom side of the rotating disc, the connecting plates are located outside the blast furnace body, first nozzles are arranged on the inner sides of the bottoms of the connecting plates, water outlets of the first nozzles face the surface of the blast furnace body, and a vertical rod is arranged in the center of the rotating disc; and a fixing ring is arranged in the center of the upper end of the rotating disc.

Description

Technical Field

[0001] The invention relates to the technical field of steel blast furnaces, in particular to a cooling device for steel blast furnace production. Background Art

[0002] The blast furnace is made of steel plates as the furnace shell, and the shell is lined with refractory bricks. The blast furnace body is divided into five parts from top to bottom: throat, body, waist, belly, and hearth. Due to the advantages of good technical and economic indicators of blast furnace ironmaking, simple process, large production volume, high labor production efficiency, and low energy consumption, the iron produced by this method accounts for the vast majority of the world's total iron production. During blast furnace production, iron ore, coke, and slag flux (limestone) are loaded from the top of the furnace, and preheated air is blown in from the tuyere located at the bottom of the furnace along the furnace periphery. At high temperature, the carbon in the coke burns with the oxygen in the blown air to generate carbon monoxide and hydrogen. The oxygen in the iron ore is removed during the rising process in the furnace, thereby reducing the iron. The molten iron is released from the iron mouth, and the unreduced impurities in the iron ore combine with flux such as limestone to form slag, which is discharged from the slag mouth. The generated coal gas is discharged from the top of the furnace and, after dust removal, is used as fuel for hot blast stoves, heating furnaces, coke ovens, boilers, etc. The main product of blast furnace smelting is pig iron, as well as by-product blast furnace slag and blast furnace gas.

[0003] When cooling an existing blast furnace, cooling liquid is usually only sprayed at one of the outside or inside locations to cool the blast furnace. However, this cooling method is uneven, which can easily reduce the service life of the blast furnace and create the risk of cracking. Therefore, we propose a cooling device for steel blast furnace production to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide a cooling device for steel blast furnace production, so as to solve the problem mentioned in the above background technology that when cooling the existing blast furnace, cooling liquid is usually only sprayed at one of the outside or inside to cool the blast furnace, but such cooling method is uneven, which can easily reduce the service life of the blast furnace and create the risk of cracking.

[0005] To achieve the above object, the present invention provides the following technical solution: A cooling device for steel blast furnace production, comprising a blast furnace body, wherein a circular groove is provided at the upper end of the blast furnace body, and the circular groove is connected to the interior of the blast furnace body;

[0006] Also includes:

[0007] A rotating disk is arranged above the blast furnace body, and connecting plates are symmetrically distributed around the outer bottom side of the rotating disk, and the connecting plates are located outside the blast furnace body. A first nozzle is arranged on the inner side of the bottom of the connecting plate, and the water outlet of the first nozzle faces the surface of the blast furnace body. A vertical rod is arranged at the center of the rotating disk, and a fixing ring is arranged at the center of the upper end of the rotating disk, and the upper end of the fixing ring is open-type, and a circle of teeth is arranged on the upper end of the inner wall of the fixing ring. A second fixing plate is arranged on one side of the outer side of the vertical rod, and the second fixing plate is located above the fixing ring. A second motor is arranged on the upper end of the second fixing plate, and a second gear is arranged at the bottom of the second fixing plate. The first gear is connected to the second motor, and the second gear is meshed with the teeth for transmission. An opening is integrally formed on one side of the outer side of the vertical pole, a first fixed plate is provided inside the vertical pole, a first gear is provided below the first fixed plate, and the second gear passes through the opening for meshing with the first gear for transmission. The first gear is fixed below the first fixed plate through a fixed rod, a connecting rod is provided below the first gear, the connecting rod is located inside the vertical pole, and the connecting rod extends from below the vertical pole, a water diversion tray is provided at the bottom of the connecting rod, and the water diversion tray is located below the vertical pole, and a plurality of evenly distributed second nozzles are provided outside the water diversion tray.

[0008] Preferably, a first water tank is provided on one side of the upper end of the rotating disk, a first water pipe is provided at the rear end of the first water tank, a water dividing ring is provided on the outside of the connecting plate, and the bottom of the first water pipe is connected to the water dividing ring, a second water pipe is provided at the bottom of the water dividing ring, and several second water pipes are provided and respectively pass through the connecting plate to be connected to the corresponding first nozzles.

[0009] Preferably, a second water tank is provided outside the vertical pole, a connecting pipe is provided at the bottom of the second water tank, the connecting pipe is fixed to one side of the upper end of the water distribution tray, and both ends of the connecting pipe are connected to the water distribution tray and the inside of the second water tank respectively.

[0010] Preferably, connection plates are symmetrically provided on both sides of the rear end of the second water tank, the connection plates are engaged with the outside of the vertical pole through bearings, and the second water tank rotates outside the vertical pole through bearings inside the connection plates.

[0011] Preferably, the rotating disk is connected to the vertical pole via a rotating shaft, and the rotating disk rotates outside the vertical pole via the rotating shaft.

[0012] Preferably, a guide rail is provided above the blast furnace body, and the guide rail is installed on the ceiling above the blast furnace body through a fixed support, a movable seat is provided on the outside of the guide rail, a through groove is integrally formed inside the movable seat, and the movable seat is slidably engaged on the outside of the guide rail through the through groove, a side panel is provided on the right side of the outside of the movable seat, a cylinder is provided at the upper end of the side panel, a lifting rod is provided at the lower end of the side panel, the upper end of the lifting rod is connected to the cylinder, and the bottom of the lifting rod is connected to the vertical rod.

[0013] Preferably, a screw is provided inside the guide rail, a third motor is provided at the front end of the guide rail, and the third motor is connected to the screw, a slide groove is integrally formed at the upper end of the guide rail, and the slide groove is connected to the inside of the guide rail, a transmission block is provided inside the movable seat, the transmission block is located at the inner upper end of the through groove, the transmission block passes through the slide groove and is threadedly connected to the screw, and the rotation of the screw drives the movable seat to slide back and forth on the outside of the guide rail.

[0014] Preferably, coolant is provided inside the first water tank and the second water tank, and the coolant is output from the first water pipe and the connecting pipe respectively through water pumps inside the first water tank and the second water tank.

[0015] Preferably, a counterweight is provided on the left side of the movable seat.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Spraying mechanisms are arranged on both the inner and outer sides of the blast furnace body to cool the inner and outer walls of the blast furnace body. Two spraying mechanisms are connected by a vertical pole. The external spraying mechanism consists of a water dividing ring, a first water tank and a first nozzle. The water dividing ring and the first water tank are connected by a first water pipe, and the nozzle is connected by a second water pipe. The nozzle is fixed to the outside of the blast furnace through a connecting plate. The external spraying mechanism is installed on a rotating disk, and the mounting disk is installed on the outside of the vertical pole. At the same time, the bottom of the vertical pole extends to the inside of the blast furnace, and the internal spraying mechanism is installed at the bottom of the vertical pole. The internal spraying mechanism consists of a water dividing disk, a second water tank and a second nozzle. By setting a fixing ring at the upper end of the rotating disk and at one end of the vertical pole A second gear is arranged on the side, and the second gear is meshed and installed on one side of the inner wall of the fixed ring. At the same time, a first gear is arranged inside the vertical rod, and one side of the second gear extends to the inside of the vertical rod to mesh with the first gear for transmission. A connecting rod is arranged at the bottom of the first gear, and the built-in spraying mechanism is installed on the connecting rod, so that the second gear can be driven to rotate, and the fixed ring and the rotating disk can be driven to rotate while driving the first gear to rotate, so that the built-in spraying mechanism and the external spraying mechanism can be driven to rotate together at the same time, so that the inner wall and the outer wall of the blast furnace body can be evenly cooled and cooled, so that the surface of the blast furnace is cooled more evenly, thereby improving the service life of the blast furnace.

[0018] 2. A guide rail is arranged at the upper end of the vertical pole, and the guide rail is installed on the ceiling above the blast furnace, or a vertical bracket is arranged on one side of the blast furnace according to the on-site conditions to fix the guide rail, a screw is arranged inside the guide rail, and a moving seat is arranged outside the guide rail, and the moving seat is connected to the screw for transmission. The vertical pole is fixed on one side of the moving seat, and the moving seat can be driven to move back and forth by rotating the screw, so that the built-in spraying mechanism and the external spraying mechanism can be driven to move from the outside to the top of the blast furnace, and then the built-in spraying mechanism and the external spraying mechanism are driven to descend by the cylinder, so that the built-in spraying mechanism and the external spraying mechanism can smoothly enter the inside of the blast furnace and the outside of the blast furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is the overall structural front view of the present invention;

[0021] Figure 3 It is a top view of the interior of the fixing ring of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the movable seat and the guide rail of the present invention;

[0023] Figure 5 This is an enlarged view of the structure at A of the present invention;

[0024] Figure 6 It is an enlarged view of the structure at B of the present invention;

[0025] In the figure: 1, blast furnace body; 2, circular groove; 3, rotating disk; 4, first water tank; 5, first water pipe; 6, connecting plate; 7, first nozzle; 8, second water pipe; 9, fixed ring; 10, rotating shaft; 11, vertical rod; 12, first fixed plate; 13, fixed rod; 14, connecting rod; 15, first gear; 16, second gear; 17, second fixed plate; 18, teeth; 19, second water tank; 20, connecting disk; 21, connecting pipe; 22, water distribution disk; 23, second nozzle; 24, lifting rod; 25, cylinder; 26, moving seat; 27, side plate; 28, guide rail; 29, fixed support; 30, screw; 31, third motor; 32, transmission block; 33, slide groove; 34, opening; 35, second motor; 36, water distribution ring; 37, through groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figure 1-6, the present invention provides an embodiment: a cooling device for steel blast furnace production, comprising a blast furnace body 1, a circular groove 2 is arranged at the upper end of the blast furnace body 1, and the circular groove 2 is connected to the interior of the blast furnace body 1;

[0028] Also includes:

[0029] The rotating disk 3 is arranged above the blast furnace body 1, and the connecting plates 6 are symmetrically distributed around the outer bottom side of the rotating disk 3, and the connecting plates 6 are located outside the blast furnace body 1, and the first nozzle 7 is arranged on the inner side of the bottom of the connecting plate 6, and the water outlet of the first nozzle 7 faces the surface of the blast furnace body 1. The center of the rotating disk 3 is provided with a vertical rod 11, and the center of the upper end of the rotating disk 3 is provided with a fixing ring 9, and the upper end of the fixing ring 9 is open-type, and the upper end of the inner wall of the fixing ring 9 is provided with teeth 18. A second fixing plate 17 is arranged on one side of the outer side of the vertical rod 11, and the second fixing plate 17 is located above the fixing ring 9, and a second motor 35 is arranged on the upper end of the second fixing plate 17, and a second gear 16 is arranged at the bottom of the second fixing plate 17, and the second gear 16 and the second motor 35 are connected. The vertical rod 11 is connected to the machine 35, and the second gear 16 is meshed with the teeth 18 for transmission. An opening 34 is integrally formed on one side of the outer side of the vertical rod 11. A first fixed plate 12 is provided inside the vertical rod 11. A first gear 15 is provided below the first fixed plate 12, and the second gear 16 passes through the opening 34 to mesh with the first gear 15 for transmission. The first gear 15 is fixed below the first fixed plate 12 through a fixing rod 13. A connecting rod 14 is provided below the first gear 15. The connecting rod 14 is located inside the vertical rod 11 and extends from below the vertical rod 11. A water diversion tray 22 is provided at the bottom of the connecting rod 14, and the water diversion tray 22 is located below the vertical rod 11. A plurality of evenly distributed second nozzles 23 are provided outside the water diversion tray 22.

[0030] A fixing ring 9 is arranged at the upper end of the rotating disk 3, and a second gear 16 is arranged on one side of the vertical rod 11. The second gear 16 is meshed and installed on one side of the inner wall of the fixing ring 9. At the same time, a first gear 15 is arranged inside the vertical rod 11. One side of the second gear 16 extends to the inside of the vertical rod 11 and meshes with the first gear 15 for transmission. A connecting rod 14 is arranged at the bottom of the first gear 15, and the built-in spraying mechanism is installed on the connecting rod 14, so that the second gear 16 can be driven to rotate, and the first gear 15 can be driven to rotate while driving the fixing ring 9 and the rotating disk 3 to rotate, so that the built-in spraying mechanism and the external spraying mechanism can be driven to rotate together, so that the inner wall and the outer wall of the blast furnace body 1 can be evenly cooled.

[0031] See also Figure 2A first water tank 4 is provided on one side of the upper end of the rotating disk 3, a first water pipe 5 is provided at the rear end of the first water tank 4, a water dividing ring 36 is provided on the outside of the connecting plate 6, and the bottom of the first water pipe 5 is connected to the water dividing ring 36, a second water pipe 8 is provided at the bottom of the water dividing ring 36, and the second water pipe 8 is provided with a plurality of and respectively passes through the connecting plate 6 to be connected with the corresponding first nozzle 7, which is used to output the coolant from the first water tank 4 to the first nozzle 7, so as to facilitate the cooling of the outer wall of the blast furnace.

[0032] See also Figure 6 A second water tank 19 is arranged outside the vertical pole 11, and a connecting pipe 21 is arranged at the bottom of the second water tank 19. The connecting pipe 21 is fixed to one side of the upper end of the water dividing plate 22, and the two ends of the connecting pipe 21 are respectively connected to the water dividing plate 22 and the inside of the second water tank 19, so as to output the coolant from the second water tank 19 to the second nozzle 23 around the water dividing plate 22, so as to facilitate the cooling of the inner wall of the blast furnace.

[0033] See also Figure 6 The second water tank 19 is symmetrically provided with connecting plates 20 on both sides of the rear end. The connecting plates 20 are engaged with the outside of the vertical pole 11 through bearings, and the second water tank 19 is rotated outside the vertical pole 11 through the bearings inside the connecting plates 20, so that the second water tank 19 can rotate together with the water diversion plate 22 outside the vertical pole 11.

[0034] See also Figure 5 The rotating disk 3 is connected to the vertical pole 11 through the rotating shaft 10, and the rotating disk 3 rotates outside the vertical pole 11 through the rotating shaft 10, which facilitates the rotating disk 3 to rotate outside the vertical pole 11.

[0035] See also Figure 2 A guide rail 28 is arranged above the blast furnace body 1, and the guide rail 28 is installed on the ceiling above the blast furnace body 1 through a fixed support 29. A moving seat 26 is arranged outside the guide rail 28, and a through groove 37 is integrally formed inside the moving seat 26, and the moving seat 26 is slidably engaged with the outside of the guide rail 28 through the through groove 37. A side plate 27 is arranged on the right side of the outside of the moving seat 26, and a cylinder 25 is arranged at the upper end of the side plate 27, and a lifting rod 24 is arranged at the lower end of the side plate 27. The upper end of the lifting rod 24 is connected to the cylinder 25, and the bottom of the lifting rod 24 is connected to the vertical rod 11, which is used to control the vertical rod 11 to drive the spraying structure on both sides of the blast furnace to move up and down.

[0036] See also Figure 2 and Figure 4A screw 30 is provided inside the guide rail 28, a third motor 31 is provided at the front end of the guide rail 28, and the third motor 31 is connected to the screw 30, a slide groove 33 is integrally formed at the upper end of the guide rail 28, and the slide groove 33 is connected to the inside of the guide rail 28, a transmission block 32 is provided inside the movable seat 26, the transmission block 32 is located at the inner upper end of the through groove 37, the transmission block 32 passes through the slide groove 33 and is threadedly connected to the screw 30, and the screw 30 rotates to drive the movable seat 26 to slide back and forth outside the guide rail 28, so as to drive the movable seat 26 to move on the guide rail 28, so as to drive the cooling structure to leave the surroundings of the blast furnace.

[0037] See also Figure 2 Cooling liquid is provided inside the first water tank 4 and the second water tank 19, and the cooling liquid is output from the first water pipe 5 and the connecting pipe 21 respectively through the water pumps inside the first water tank 4 and the second water tank 19. The cooling liquid stored in the water tank is convenient for cooling the inside and outside of the blast furnace.

[0038] See also Figure 4 A counterweight block is provided on the left side of the moving seat 26 for balancing the left and right sides of the moving seat 26 .

[0039] Working principle: When the blast furnace needs to be cooled, first start the third motor 31 to drive the screw 30 to rotate. The rotation of the screw 30 drives the movable seat 26 to move forward and backward, so that the movable seat 26 moves to the top of the blast furnace body 1, and then start the cylinder 25 to drive the vertical rod 11 to descend, so that the water distribution plate 22 accurately enters the entrance of the blast furnace body 1 from the circular groove 2, and the connecting plate 6 is located on the outside of the blast furnace body 1, and then slowly lowers the vertical rod 11, and at the same time starts the water pump inside the first water tank 4 and the second water tank 19, the first water pipe 5 of the coolant is transported to the water distribution ring 36, and the coolant is distributed to the second water pipe 8, and finally sprayed out from the first nozzle 7 to the outer wall of the blast furnace body 1 The cooling liquid is sprayed on the surface of the blast furnace body 1, and at the same time, the cooling liquid is transported from the connecting pipe 21 to the water dividing plate 22, and then sprayed to the inner wall surface of the blast furnace body 1 through the second nozzle 23. At the same time, the second motor 35 is started to drive the second gear 16 to rotate, and the second gear 16 drives the first gear 15 to rotate, and the first gear 15 drives the connecting rod 14 to rotate, so that the water dividing plate 22 can be driven to rotate inside the blast furnace body 1. At the same time, the second gear 16 drives the fixing ring 9 to rotate, and the fixing ring 9 drives the rotating disk 3 to rotate, so that the first nozzle 7 can be driven to rotate around the outside of the blast furnace body 1, so that the inside and outside of the blast furnace body 1 can be evenly cooled at the same time.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A cooling device for steel blast furnace production, comprising a blast furnace body (1), wherein a circular groove (2) is provided at the upper end of the blast furnace body (1), and the circular groove (2) is connected to the interior of the blast furnace body (1); Features: Also includes: A rotating disk (3) is arranged above a blast furnace body (1); connecting plates (6) are symmetrically distributed around the bottom outer side of the rotating disk (3); the connecting plates (6) are located outside the blast furnace body (1); a first nozzle (7) is arranged on the inner side of the bottom of the connecting plate (6); and the water outlet of the first nozzle (7) faces the surface of the blast furnace body (1); a vertical rod (11) is arranged at the center of the rotating disk (3); a fixing ring (9) is arranged at the center of the upper end of the rotating disk (3); the upper end of the fixing ring (9) is open-type; a circle of teeth (18) is arranged on the upper end of the inner wall of the fixing ring (9); a second fixing plate (17) is arranged on one side of the outer side of the vertical rod (11); the second fixing plate (17) is located above the fixing ring (9); a second motor (35) is arranged at the upper end of the second fixing plate (17); a second gear (16) is arranged at the bottom of the second fixing plate (17); the second gear (16) and the second motor (35) are connected to each other. The vertical rod (11) is connected to a gear (35), and the second gear (16) meshes with the teeth (18) for transmission. An opening (34) is integrally formed on one side of the outside of the vertical rod (11). A first fixing plate (12) is provided inside the vertical rod (11). A first gear (15) is provided below the first fixing plate (12), and the second gear (16) passes through the opening (34) and meshes with the first gear (15) for transmission. The first gear (15) is fixed below the first fixing plate (12) through a fixing rod (13). A connecting rod (14) is provided below the first gear (15). The connecting rod (14) is located inside the vertical rod (11) and extends below the vertical rod (11). A water distribution plate (22) is provided at the bottom of the connecting rod (14), and the water distribution plate (22) is located below the vertical rod (11). A plurality of evenly distributed second nozzles (23) are provided outside the water distribution plate (22).

2. A cooling device for steel blast furnace production according to claim 1, characterized in that: A first water tank (4) is provided on one side of the upper end of the rotating disk (3), a first water pipe (5) is provided at the rear end of the first water tank (4), a water dividing ring (36) is provided on the outside of the connecting plate (6), and the bottom of the first water pipe (5) is connected to the water dividing ring (36), a second water pipe (8) is provided at the bottom of the water dividing ring (36), and a plurality of second water pipes (8) are provided and respectively pass through the connecting plate (6) to be connected to corresponding first nozzles (7).

3. A cooling device for steel blast furnace production according to claim 1, characterized in that: A second water tank (19) is arranged outside the vertical pole (11), and a connecting pipe (21) is arranged at the bottom of the second water tank (19). The connecting pipe (21) is fixed to one side of the upper end of the water distribution tray (22), and the two ends of the connecting pipe (21) are respectively connected to the water distribution tray (22) and the interior of the second water tank (19).

4. A cooling device for steel blast furnace production according to claim 3, characterized in that: Connecting plates (20) are symmetrically arranged on both sides of the rear end of the second water tank (19); the connecting plates (20) are engaged with the outside of the vertical pole (11) via bearings, and the second water tank (19) rotates outside the vertical pole (11) via bearings inside the connecting plates (20).

5. A cooling device for steel blast furnace production according to claim 1, characterized in that: The rotating disk (3) and the vertical rod (11) are connected via a rotating shaft (10), and the rotating disk (3) rotates outside the vertical rod (11) via the rotating shaft (10).

6. A cooling device for steel blast furnace production according to claim 1, characterized in that: A guide rail (28) is arranged above the blast furnace body (1), and the guide rail (28) is installed on the ceiling above the blast furnace body (1) through a fixed support (29). A movable seat (26) is arranged outside the guide rail (28), and a through groove (37) is integrally formed inside the movable seat (26), and the movable seat (26) is slidably engaged with the outside of the guide rail (28) through the through groove (37). A side plate (27) is arranged on the right side of the outside of the movable seat (26), and a cylinder (25) is arranged at the upper end of the side plate (27), and a lifting rod (24) is arranged at the lower end of the side plate (27), and the upper end of the lifting rod (24) is connected to the cylinder (25), and the bottom of the lifting rod (24) is connected to the vertical rod (11).

7. A cooling device for steel blast furnace production according to claim 6, characterized in that: A screw rod (30) is arranged inside the guide rail (28), a third motor (31) is arranged at the front end of the guide rail (28), and the third motor (31) is connected to the screw rod (30), a slide groove (33) is integrally formed at the upper end of the guide rail (28), and the slide groove (33) is connected to the inside of the guide rail (28), a transmission block (32) is arranged inside the movable seat (26), the transmission block (32) is located at the inner upper end of the through groove (37), the transmission block (32) passes through the slide groove (33) and is threadedly connected to the screw rod (30), and the screw rod (30) rotates to drive the movable seat (26) to slide back and forth outside the guide rail (28).

8. A cooling device for steel blast furnace production according to claim 2, characterized in that: The first water tank (4) and the second water tank (19) are both provided with cooling liquid inside, and the cooling liquid is respectively output from the first water pipe (5) and the connecting pipe (21) through the water pumps inside the first water tank (4) and the second water tank (19).

9. A cooling device for steel blast furnace production according to claim 6, characterized in that: A counterweight block is arranged on the left side of the movable seat (26).

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