Blast furnace slag preheating ironmaking device

Abstract

The utility model relates to the technical field of slag ironmaking, and discloses a blast furnace slag preheating ironmaking device which comprises a furnace body, an ironmaking box is arranged on one side of the furnace body, a filter plate is installed in the ironmaking box, and a through pipe is connected between the furnace body and the ironmaking box. The dismounting and mounting mechanism is located between the iron-making box and the filter plate, and the dismounting and mounting mechanism comprises an extension seat fixed to one side of the filter plate, a positioning mechanism and an insertion mechanism; through the arrangement of the dismounting and mounting mechanism, the filter plate can be quickly dismounted and replaced, so that blast furnace residues left on the surface of the filter plate can be effectively removed, the complexity and time consumption of maintenance work are reduced, the filtering effect of the filter plate in the device is improved, and dust accumulation and pollution in equipment are avoided; meanwhile, the problems that more residues are accumulated on the top of a filter plate in a traditional device, the long-term operation reliability of equipment is influenced, equipment faults occur frequently, and the production continuity and stability are influenced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of slag ironmaking, in particular to a blast furnace slag preheating ironmaking device. Background Technique

[0002] The blast furnace slag preheating ironmaking device is a device that uses the waste heat of blast furnace slag to improve the smelting efficiency. This device usually recovers and utilizes the heat in the high-temperature slag generated during the ironmaking process in the blast furnace, and uses it to preheat the charged materials, such as iron ore and coke, etc., so as to increase their temperature and reduce the energy consumption in the subsequent ironmaking process.

[0003] During the blast furnace ironmaking process, the gangue in the iron ore, the ash in the coke and the injected materials combine with the fluxes such as limestone added to the furnace to generate slag. The slag will be discharged from the slag outlet of the blast furnace and collected. The raw materials to be added to the blast furnace pass through the preheating device to conduct heat exchange with the hot slag. The raw materials absorb the heat released by the slag during the preheating process, thereby increasing their own temperature. Since the raw materials have been preheated, the reaction in the blast furnace can reach the required temperature faster, accelerating the iron reduction process; however, in the traditional device, after the slag is broken by the crushing mechanism, it is filtered through the filter plate, which will leave more blast furnace residues on its surface, increasing the complexity and time consumption of maintenance work, resulting in a decline in the filtering effect, which may cause dust accumulation and pollution inside the equipment. At the same time, the accumulation of more residues on the top of the filter plate will affect the long-term operation reliability of the equipment, causing frequent equipment failures and affecting the continuity and stability of production. Content of the Utility Model

[0004] The purpose of the utility model is to provide a blast furnace slag preheating ironmaking device, which solves the problems in the background technique

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A blast furnace slag preheating ironmaking device, comprising:

[0007] A furnace body, on one side of the furnace body is provided with an ironmaking box, inside the ironmaking box is installed a filter plate, and a through pipe is connected between the furnace body and the ironmaking box;

[0008] A crushing mechanism, which is located on the top of the filter plate and is used for crushing the blast furnace residues;

[0009] A disassembly and assembly mechanism, which is located between the ironmaking box and the filter plate and is used for quickly disassembling the filter plate. The disassembly and assembly mechanism includes an extension seat fixed on one side of the filter plate, a positioning mechanism and a plugging mechanism. The plugging mechanism is located between the extension seat and the ironmaking box and is used for plugging the extension seat, and the positioning mechanism is located between the filter plate and the ironmaking box and is used for positioning the filter plate.

[0010] Preferably, the positioning mechanism includes a fixed seat fixed on one side of the iron smelting box and a receiving cavity opened inside the fixed seat. A moving plate is installed inside the receiving cavity. Two third springs are connected between the moving plate and the receiving cavity. Two rod bodies are fixed on the top of the moving plate. The two rod bodies extend to the top of the fixed seat and jointly install a control rod. A plurality of evenly distributed insertion blocks are fixed on the bottom of the moving plate. The plurality of insertion blocks extend to the bottom of the fixed seat and are inserted into the filter plate.

[0011] Preferably, the crushing mechanism includes a driving motor fixed on the top of the iron smelting box and a plurality of cutting knives arranged inside the iron smelting box. The output end of the driving motor is connected with a transmission shaft. The transmission shaft extends into the iron smelting box and is fixed with a plurality of cutting knives. A plurality of evenly distributed stirring blades are fixed on the outer wall of the transmission shaft.

[0012] Preferably, the plugging mechanism includes a frame fixed on one side of the iron smelting box and a plug rod inserted into the iron smelting box. A jack for inserting the plug rod is opened on one side of the extension seat. A control mechanism for controlling the plug rod is arranged between the plug rod and the frame.

[0013] Preferably, the control mechanism includes a baffle fixed on one side of the plug rod. A second spring is connected between the baffle and the frame. A movable rod is fixed on one side of the baffle. The second spring is sleeved on the outer wall of the movable rod. The movable rod extends to one side of the frame and installs a control sleeve.

[0014] Preferably, a plurality of evenly distributed moving grooves are opened inside the filter plate. A hole plate is installed inside the moving groove. A first spring is connected between the hole plate and the moving groove. A linkage plate is fixed on one side of the hole plate. The linkage plate extends to one side of the filter plate and installs a control plate.

[0015] Preferably, a discharging mechanism for discharging the blast furnace residue is arranged at the bottom of the iron smelting box. The discharging mechanism includes an electric push rod fixed on one side of the iron smelting box and a pushing block arranged at the bottom inside the iron smelting box. A moving block is fixed on the bottom of the pushing block. A sliding groove for the moving block to slide is opened at the bottom inside the iron smelting box. A fixing plate is fixed on one side of the moving block. A groove for the fixing plate to slide is opened at the top of the sliding groove. The telescopic end of the electric push rod is connected with the pushing block. A discharging door corresponding to the pushing block is hinged on one side of the iron smelting box.

[0016] Compared with the prior art, the beneficial effects achieved by the present utility model are:

[0017] 1. Through the setting of the disassembly and assembly mechanism, the utility model can quickly disassemble and replace the filter plate, effectively remove the blast furnace residues remaining on its surface, reduce the complexity and time consumption of maintenance work, improve the filtering effect of the filter plate in this device, avoid dust accumulation and pollution inside the equipment, and at the same time solve the problem that a large amount of residues accumulating on the top of the filter plate in the traditional device will affect the long-term operation reliability of the equipment, cause frequent equipment failures, and affect the continuity and stability of production;

[0018] 2. Through the setting of the discharging mechanism, the utility model can discharge the crushed blast furnace residues, reduce the accumulation inside the equipment, reduce the load of the equipment, thereby improving the overall operation efficiency, ensuring the normal operation of the equipment. At the same time, discharging the crushed residues can reduce the risk of blockage inside the equipment and reduce the possibility of production interruption and safety accidents caused by equipment failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the whole utility model;

[0020] Figure 2 is a sectional view of the whole utility model;

[0021] Figure 3 is a schematic structural diagram of the filter plate of the utility model;

[0022] Figure 4 is a schematic structural diagram of the positioning mechanism of the utility model;

[0023] Figure 5 is a schematic structural diagram of the plugging mechanism of the utility model;

[0024] Figure 6 is a sectional view of the filter plate of the utility model;

[0025] Figure 7 is a schematic structural diagram of the discharging mechanism of the utility model.

[0026] Among them: 1. Furnace body; 2. Ironmaking box; 3. Disassembly and assembly mechanism; 4. Discharging mechanism; 5. Crushing mechanism; 6. Filter plate; 7. Orifice plate; 8. Linkage plate; 9. Control plate; 10. First spring;

[0027] 31. Extension seat; 32. Fixed seat; 33. Control rod; 34. Frame body; 35. Second spring; 36. Plug rod; 37. Plug block; 38. Third spring; 39. Moving plate;

[0028] 41. Electric push rod; 42. Push block; 43. Moving block; 44. Fixed plate; 45. Discharge door;

[0029] 51. Driving motor; 52. Cutting knife; 53. Stirring blade. Specific embodiments

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0031] Please refer to Figure 1 、 Figure 2 and Figure 6 , a blast furnace slag preheating ironmaking device, comprising:

[0032] A furnace body 1, with an ironmaking box 2 provided on one side of the furnace body 1. A filter plate 6 is installed inside the ironmaking box 2, and a through pipe is connected between the furnace body 1 and the ironmaking box 2;

[0033] A crushing mechanism 5, which is located on top of the filter plate 6 and is used to crush the blast furnace residue; the crushing mechanism 5 includes a driving motor 51 fixed on the top of the ironmaking box 2 and a plurality of cutting blades 52 arranged inside the ironmaking box 2. The output end of the driving motor 51 is connected to a transmission shaft, and the transmission shaft extends into the interior of the ironmaking box 2 and is fixed to the plurality of cutting blades 52. A plurality of uniformly distributed stirring blades 53 are fixed on the outer wall of the transmission shaft. A plurality of uniformly distributed moving grooves are opened inside the filter plate 6, and a hole plate 7 is installed inside the moving grooves. A first spring 10 is connected between the hole plate 7 and the moving grooves, and a linkage plate 8 is fixed on one side of the hole plate 7. The linkage plate 8 extends to one side of the filter plate 6 and is installed with a control plate 9. A common valve on the market is provided inside the through pipe, and the valve mainly controls the discharge of the residue inside the furnace body 1.

[0034] The residue is discharged into the ironmaking box 2 through the through pipe, and then the driving motor 51 drives the transmission shaft to start rotating. The rotation of the transmission shaft drives the cutting blades 52 and the stirring blades 53 to rotate synchronously. Through the rotation of the cutting blades 52 and the stirring blades 53, the residue can be fully crushed, and its residual heat can exchange heat with the ironmaking box 2, so as to facilitate ironmaking from the blast furnace slag;

[0035] When the crushed slag needs to be filtered and discharged, push the control plate 9 to drive the linkage plate 8 to move. Through the movement of the linkage plate 8, the hole plate 7 is driven to move. Through the movement of the hole plate 7, the first spring 10 is driven to contract. Through the contraction of the first spring 10, the hole plate 7 is separated from the filter holes on the filter plate 6, so as to facilitate the filtering of the slag through the filter holes.

[0036] Please refer to Figure 2 - Figure 5, the disassembly and assembly mechanism 3, the disassembly and assembly mechanism 3 is located between the iron-making box 2 and the filter plate 6 and is used for quickly disassembling the filter plate 6. The disassembly and assembly mechanism 3 includes an extension seat 31 fixed on one side of the filter plate 6, a positioning mechanism, and a plugging mechanism. The plugging mechanism is located between the extension seat 31 and the iron-making box 2 and is used for plugging the extension seat 31. The positioning mechanism is located between the filter plate 6 and the iron-making box 2 and is used for positioning the filter plate 6. The positioning mechanism includes a fixed seat 32 fixed on one side of the iron-making box 2 and a receiving cavity opened inside the fixed seat 32. A moving plate 39 is installed inside the receiving cavity. Two third springs 38 are connected between the moving plate 39 and the receiving cavity. And two rod bodies are fixed on the top of the moving plate 39. The two rod bodies extend to the top of the fixed seat 32 and jointly install a control rod 33. A plurality of uniformly distributed insertion blocks 37 are fixed on the bottom of the moving plate 39. The plurality of insertion blocks 37 extend to the bottom of the fixed seat 32 and are inserted into the filter plate 6. The plugging mechanism includes a frame body 34 fixed on one side of the iron-making box 2 and a plug rod 36 inserted inside the iron-making box 2. A jack for inserting the plug rod 36 is opened on one side of the extension seat 31. A control mechanism for controlling the plug rod 36 is arranged between the plug rod 36 and the frame body 34. The control mechanism includes a baffle fixed on one side of the plug rod 36. A second spring 35 is connected between the baffle and the frame body 34. And a movable rod is fixed on one side of the baffle. The second spring 35 is sleeved on the outer wall of the movable rod. The movable rod extends to one side of the frame body 34 and installs a control sleeve.

[0037] First, pull the control sleeve to drive the movable rod to move. Through the movement of the movable rod, the baffle is driven to move. Through the movement of the baffle, the second spring 35 is driven to contract. Through the contraction of the second spring 35, the plug rod 36 is separated from the jack.

[0038] Subsequently, pull the control rod 33 to drive the rod body to move. Through the movement of the rod body, the moving plate 39 is driven to move inside the receiving cavity. Through the movement of the moving plate 39, the third spring 38 is driven to contract. Through the contraction of the third spring 38, the moving plate 39 drives the insertion block 37 to move. Through the upward movement of the insertion block 37, it is separated from the filter plate 6.

[0039] When the plug rod 36 is separated from the jack and the insertion block 37 is separated from the filter plate 6, pull the filter plate 6 to separate it from the iron-making box 2, so as to realize the operation of disassembling and replacing the filter plate 6.

[0040] Please also refer to Figure 1 、 Figure 2 and Figure 7, a discharging mechanism 4 for discharging the blast furnace residue is arranged at the bottom of the iron-smelting box 2. The discharging mechanism 4 includes an electric push rod 41 fixed on one side of the iron-smelting box 2 and a pushing block 42 arranged at the inner bottom of the iron-smelting box 2. A moving block 43 is fixed at the bottom of the pushing block 42. A sliding groove for the moving block 43 to slide is formed at the inner bottom of the iron-smelting box 2. A fixing plate 44 is fixed on one side of the moving block 43. A groove for the fixing plate 44 to slide is formed at the top of the sliding groove. The telescopic end of the electric push rod 41 is connected to the pushing block 42. A discharge door 45 corresponding to the pushing block 42 is hinged on one side of the iron-smelting box 2.

[0041] When it is necessary to discharge the slag, first rotate the discharge door 45 to make it in an open state, and then drive the pushing block 42 to move through the electric push rod 41. Through the movement of the pushing block 42, the slag at the bottom of the iron-smelting box 2 can be effectively pushed until it is pushed to be separated from the iron-smelting box 2, that is, the operation of discharging the slag is formed.

[0042] When the pushing block 42 drives the moving block 43 to move during the movement process, through the movement of the moving block 43, the fixing plate 44 is synchronously moved. Through the movement of the fixing plate 44, the top of the sliding groove is always kept sealed, avoiding the problem that the moving block 43 is stuck due to the slag falling into the inside, thereby increasing the smoothness of the discharging operation of the present utility model.

[0043] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A blast furnace slag preheating ironmaking device, characterized in that: include: A furnace body (1), an ironmaking box (2) is arranged on one side of the furnace body (1), a filter plate (6) is installed inside the ironmaking box (2), and a through pipe is connected between the furnace body (1) and the ironmaking box (2); A crushing mechanism (5), the crushing mechanism (5) being located on the top of the filter plate (6) and used for crushing the blast furnace residue; A disassembly and assembly mechanism (3), the disassembly and assembly mechanism (3) is located between the ironmaking box (2) and the filter plate (6) and is used to quickly disassemble the filter plate (6), the disassembly and assembly mechanism (3) comprises an extension seat (31) fixed to one side of the filter plate (6), a positioning mechanism and a plug-in mechanism, the plug-in mechanism is located between the extension seat (31) and the ironmaking box (2) and is used to plug the extension seat (31), and the positioning mechanism is located between the filter plate (6) and the ironmaking box (2) and is used to position the filter plate (6).

2. The blast furnace slag preheating ironmaking device according to claim 1, characterized in that: The positioning mechanism comprises a fixed seat (32) fixed on one side of the ironmaking box (2) and a storage chamber opened inside the fixed seat (32), a movable plate (39) is installed inside the storage chamber, two third springs (38) are connected between the movable plate (39) and the storage chamber, and two rod bodies are fixed on the top of the movable plate (39), the two rod bodies extend to the top of the fixed seat (32) and are jointly installed with a control rod (33), and a plurality of evenly distributed plug blocks (37) are fixed on the bottom of the movable plate (39), and the plurality of plug blocks (37) extend to the bottom of the fixed seat (32) and are plugged into the filter plate (6).

3. The blast furnace slag preheating ironmaking device according to claim 1, characterized in that: The crushing mechanism (5) comprises a driving motor (51) fixed on the top of the ironmaking box (2) and a plurality of cutting knives (52) arranged inside the ironmaking box (2); the output end of the driving motor (51) is connected to a transmission shaft, the transmission shaft extends to the inside of the ironmaking box (2) and is fixed to the plurality of cutting knives (52); the outer wall of the transmission shaft is fixed with a plurality of evenly distributed stirring blades (53).

4. The blast furnace slag preheating ironmaking device according to claim 1, characterized in that: The plug-in mechanism comprises a frame (34) fixed to one side of the ironmaking box (2) and an insertion rod (36) inserted into the inside of the ironmaking box (2); a plug hole for inserting the insertion rod (36) is provided on one side of the extension seat (31); and a control mechanism for controlling the insertion rod (36) is provided between the insertion rod (36) and the frame (34).

5. The blast furnace slag preheating ironmaking device according to claim 4, characterized in that: The control mechanism comprises a baffle fixed on one side of the insertion rod (36), a second spring (35) is connected between the baffle and the frame (34), and a movable rod is fixed on one side of the baffle, the second spring (35) is sleeved on the outer wall of the movable rod, and the movable rod extends to one side of the frame (34) and is installed with a control sleeve.

6. The blast furnace slag preheating ironmaking device according to claim 1, characterized in that: The filter plate (6) is provided with a plurality of evenly distributed movable grooves inside, a perforated plate (7) is installed inside the movable groove, a first spring (10) is connected between the perforated plate (7) and the movable groove, and a linkage plate (8) is fixed on one side of the perforated plate (7), the linkage plate (8) extends to one side of the filter plate (6) and is installed with a control plate (9).

7. The blast furnace slag preheating ironmaking device according to claim 1, characterized in that: The bottom of the ironmaking box (2) is provided with a discharge mechanism (4) for discharging blast furnace residue, the discharge mechanism (4) comprising an electric push rod (41) fixed to one side of the ironmaking box (2) and a push block (42) arranged at the bottom of the ironmaking box (2), a moving block (43) is fixed to the bottom of the push block (42), a slide groove for the moving block (43) to slide is provided at the bottom of the ironmaking box (2), a fixed plate (44) is fixed to one side of the moving block (43), a groove for the fixed plate (44) to slide is provided at the top of the slide groove, the telescopic end of the electric push rod (41) is connected to the push block (42), and a discharge door (45) corresponding to the push block (42) is hinged on one side of the ironmaking box (2).

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