Blast furnace heat energy recycling device

Abstract

The invention belongs to the technical field of blast furnace heat energy recycling, and particularly relates to a blast furnace heat energy recycling device which comprises a blast furnace tank, a feeding port is formed in the top end of the blast furnace tank, two smoke outlet pipes are fixedly connected to the circumferential face of the top end of the blast furnace tank, and a discharging groove is formed in one side of the circumferential face of the blast furnace tank. A discharging plate is arranged at the symmetrical position of the discharging groove, a slag outlet is formed in the position, corresponding to the discharging plate, of the circumferential face of the blast furnace tank, the slag outlet is used for outflow of steel slag, a supporting plate is fixedly connected to the lower surface of the discharging plate, and a heat recovery assembly is arranged on the lower surface of the discharging plate. The heat recovery assembly comprises a heat exchange plate fixedly connected to the lower surface of the discharging plate, and by arranging the heat exchange plate, the problems that in the molten iron production process, waste of a large number of resources is caused, and the utilization efficiency of generated pig iron is low are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of blast furnace heat energy recovery and utilization, in particular to a blast furnace heat energy recovery and utilization device. Background Art

[0002] Blast furnace ironmaking is an important part of modern steel production. It uses raw materials such as coke, iron ore and flux to continuously produce liquid pig iron in a vertical reactor - a blast furnace. This method is simple in process, has high output, high labor productivity and low energy consumption, and is still the main ironmaking method in the world.

[0003] The existing blast furnace smelting pig iron mainly uses raw materials including iron ore, coke and flux. In the blast furnace, the carbon monoxide produced by the combustion of coke takes away the oxygen in the iron ore and reduces it to iron. At the same time, the gangue in the iron ore, coke and flux combine to form slag. The produced molten iron is discharged from the bottom of the blast furnace, the slag is discharged from the slag outlet, and the coal gas is discharged from the top of the furnace and used as industrial fuel. The blast furnace ironmaking process is simple and has a large output. It is the main method of modern steel production.

[0004] The products are molten iron and molten slag (slag), but the temperature of blast furnace slag is above 1400℃ when it is discharged from the blast furnace. According to data, under normal circumstances, 1 ton of blast furnace slag contains sensible heat of 1675MJ, which is roughly equivalent to the heat released by the combustion of 57kg of standard coal. The heat of slag is hugely wasted, and a large amount of resources are wasted in the process of producing molten iron, resulting in low pig iron utilization efficiency.

[0005] To this end, the present invention provides a blast furnace heat energy recovery and utilization device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a blast furnace heat energy recovery and utilization device described in the present invention comprises a blast furnace tank, a feed port is provided at the top of the blast furnace tank, two smoke outlet pipes are fixedly connected to the circumferential surface of the top of the blast furnace tank, a discharge trough is provided on one side of the circumferential surface of the blast furnace tank, a discharge plate is provided at a symmetrical position of the discharge trough, a slag outlet is provided at a position of the circumferential surface of the blast furnace tank corresponding to the discharge plate, the slag outlet is used for the outflow of steel slag, and a support plate is fixedly connected to the lower surface of the discharge plate.

[0008] A heat recovery component is provided on the lower surface of the discharge plate, and the heat recovery component includes a heat exchange plate fixedly connected to the lower surface of the discharge plate, a water inlet pipe is fixedly connected to one side of the heat exchange plate, a water outlet pipe is fixedly connected to the lower surface of the heat exchange plate, and a water storage tank is fixedly connected to the lower surface of the water outlet pipe.

[0009] Preferably, inclined plates are fixedly connected to both sides of the discharge plate, and the two inclined plates are used to protect the water tank.

[0010] Preferably, a positioning plate is provided on one side of the water tank, and a cleaning assembly is provided on the upper surface of the positioning plate, the cleaning assembly includes a first motor fixedly connected to the upper surface of the positioning plate, the output end of the first motor is fixedly connected to a fixed shaft, the upper surface of the positioning plate is fixedly connected to a limiting plate, the limiting plate is rotatably connected to the fixed shaft, one end of the fixed shaft is fixedly connected to a first rotating wheel, the first rotating wheel is transmission-connected to a top plate, the lower surface of the top plate is elastically connected to a scraper, the scraper matches the cross-section of the discharging plate, and the scraper is used to scrape slag on the surface of the discharging plate.

[0011] Preferably, the first rotating wheel is transmission-connected to the first steel strip, the end of the first steel strip away from the first rotating wheel is transmission-connected to the second rotating wheel, a rotating shaft is fixedly connected to the middle of the second rotating wheel, the rotating shaft is a reciprocating screw, a sliding block is slidingly connected to the circumferential surface of the rotating shaft, a first hydraulic cylinder is fixedly connected to the upper surface of the sliding block, and an output end of the first hydraulic cylinder is fixedly connected to the top plate.

[0012] Preferably, two telescopic rods are fixedly connected to the lower surface of the top plate, a same scraper is fixedly connected to the lower surfaces of the two telescopic rods, and springs are sleeved on the circumferential surfaces of the two telescopic rods.

[0013] Preferably, a first guide rail is fixedly connected to one side of the positioning plate, a first guide groove is formed on a side of the first guide rail close to the sliding block, a limit block is fixedly connected to one side of the sliding block, and the sliding block can stably slide along the first guide groove through the limit block.

[0014] Preferably, a scraper bar is fixedly connected to the lower surface of the sliding block, and the scraper bar is used to clean the residual slag between the positioning plate and the water tank.

[0015] Preferably, the circumferential surface of the fixed shaft is fixedly connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, the middle part of the second bevel gear is fixedly connected with an auxiliary shaft, the upper surface of the positioning plate is fixedly connected with an auxiliary plate, the auxiliary plate is rotatably connected to the auxiliary shaft, and a crushing assembly is provided at one end of the auxiliary shaft, and the crushing assembly is used to crush the solidified steel slag on the upper surface of the discharge plate.

[0016] Preferably, a cam is clamped at one end of the auxiliary shaft, a fixing column is slidably connected to the upper surface of the positioning plate, a connecting disk is fixed to the top of the fixing column, a compression spring is fixed to the lower surface of the connecting disk, the compression spring is sleeved on the circumferential surface of the fixing column, one end of the compression spring away from the connecting disk is fixed to the positioning plate, a crushing plate is fixed to the lower surface of the fixing column, and a plurality of crushing columns are fixed to the lower surface of the crushing plate.

[0017] Preferably, a storage box is fixedly connected to the upper surface of the positioning plate, a telescopic tube is fixedly connected to one side of the storage box, the telescopic tube is fixedly connected to the crushing plate, and a sealing cover is threadedly connected to the upper surface of the storage box.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The blast furnace heat energy recovery and utilization device described in the present invention has a heat exchange plate fixed on the lower surface of the discharge plate, which absorbs the heat released by the slag in a direct contact manner. The water inlet pipe provides cooling water for the heat exchange plate. When the cooling water flows through the inside of the heat exchange plate, it forms heat exchange with the hot slag above, thereby absorbing heat and heating up. The heated cooling water flows into the water storage tank through the water outlet pipe. The water storage tank can store the hot water converted from the heat energy for subsequent production or life use, thereby improving the energy utilization efficiency and converting the blast furnace waste heat that was originally wasted into valuable thermal energy resources; it also reduces environmental pollution. By recycling the blast furnace waste heat, the thermal pollution caused by the direct discharge of high-temperature flue gas is reduced, and the demand for cooling water is also reduced.

[0020] 2. A blast furnace heat energy recovery and utilization device described in the present invention, in the process of heat exchange using a heat exchange plate, the slag flowing to the upper surface of the discharge plate will gradually solidify on the discharge plate. The existing operation is to crush and clean it by operators to improve the heat exchange effect of the heat exchange plate, but the cleaning process is time-consuming and labor-intensive, resulting in poor heat recovery efficiency. Therefore, a cleaning component is provided to automatically clean it. First, a first motor fixed to the upper surface of the positioning plate is started. The first motor drives the fixed shaft to rotate. The fixed shaft maintains stable rotation through the rotation connection of the limit plate, and the first rotary wheel at the end thereof rotates accordingly. The first rotary wheel drives the top plate to move through the transmission device, and a scraper elastically connected to the lower surface of the top plate slides on the surface of the discharge plate accordingly. The shape of the scraper matches the cross-section of the discharge plate to ensure that it can fit tightly and effectively scrape off the accumulated slag. The cleaning process reduces manual intervention and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the water storage tank of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the positioning plate of the present invention;

[0025] Figure 4 is a schematic structural diagram of a first motor of the present invention;

[0026] Figure 5is a schematic structural diagram of the first guide rail of the present invention;

[0027] In the figure: 1, blast furnace tank; 11, feed port; 12, smoke outlet pipe; 13, discharge chute; 14, slag outlet; 15, discharge plate; 16, support plate; 17, inclined plate;

[0028] 2. Water inlet pipe; 21. Water storage tank; 22. Water outlet pipe; 23. Heat exchange plate;

[0029] 3. Positioning plate; 31. First motor; 32. Fixed shaft; 33. First bevel gear; 34. Limiting plate; 35. First rotating wheel; 36. First strip steel; 37. Second rotating wheel; 38. Rotating shaft; 39. Sliding block; 310. Limiting block; 311. First guide rail; 312. First guide groove; 313. First hydraulic cylinder; 314. Top plate; 315. Telescopic rod; 316. Spring; 317. Scraper; 318. Scraper strip; 319. Second bevel gear; 320. Auxiliary plate; 321. Auxiliary shaft; 322. Cam; 323. Connecting plate; 324. Fixed column; 325. Compression spring; 326. Crushing plate; 327. Crushing column; 328. Telescopic tube; 329. Storage box; 330. Sealing cover. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] Embodiment 1

[0032] like Figures 1 to 5 As shown, a blast furnace heat energy recovery and utilization device according to an embodiment of the present invention comprises a blast furnace tank 1, a feed port 11 is provided at the top of the blast furnace tank 1, two smoke outlet pipes 12 are fixedly connected to the circumferential surface of the top of the blast furnace tank 1, a discharge trough 13 is provided on one side of the circumferential surface of the blast furnace tank 1, a discharge plate 15 is symmetrically provided at the discharge trough 13, a slag outlet 14 is provided at a position corresponding to the discharge plate 15 on the circumferential surface of the blast furnace tank 1, the slag outlet 14 is used for the outflow of steel slag, and a support plate 16 is fixedly connected to the lower surface of the discharge plate 15,

[0033] A heat recovery component is provided on the lower surface of the discharge plate 15, and the heat recovery component includes a heat exchange plate 23 fixedly connected to the lower surface of the discharge plate 15, a water inlet pipe 2 is fixedly connected to one side of the heat exchange plate 23, a water outlet pipe 22 is fixedly connected to the lower surface of the heat exchange plate 23, and a water storage tank 21 is fixedly connected to the lower surface of the water outlet pipe 22.

[0034] Specifically, the existing blast furnace smelting pig iron mainly uses raw materials including iron ore, coke and flux. In the blast furnace, the carbon monoxide produced by the combustion of coke removes oxygen from the iron ore and reduces it to iron. At the same time, the gangue, coke and flux in the iron ore combine to form slag. The produced molten iron is discharged from the bottom of the blast furnace, the slag is discharged from the slag outlet, and the coal gas is discharged from the top of the furnace and used as industrial fuel. The blast furnace ironmaking process is simple and has a large output. It is the main method of modern steel production.

[0035] The products are molten iron and molten slag (slag), but the temperature of blast furnace slag is above 1400℃ when it is discharged from the blast furnace. According to data, under normal circumstances, 1 ton of blast furnace slag contains 1675MJ of sensible heat, which is roughly equivalent to the heat released by burning 57kg of standard coal. The heat of slag is hugely wasted, which causes a large amount of resources to be wasted in the process of producing molten iron, resulting in low pig iron utilization efficiency.

[0036] Therefore, the present invention solves this problem by setting a certain structure. First, during the iron-making process of the blast furnace tank 1, the high-temperature flue gas generated is discharged through the smoke outlet 12. At the same time, the molten slag in the blast furnace tank 1 will flow out from the slag outlet 14 after cooling. When the slag flows through the discharge plate 15, the large amount of heat energy it carries will be effectively captured by the heat recovery component on the lower surface. The core component of the heat recovery component is the heat exchange plate 23, which fits tightly under the discharge plate 15 and absorbs the heat released by the slag by direct contact. The water inlet pipe 2 provides cooling for the heat exchange plate 23. When the cooling water flows through the heat exchange plate 23, it forms heat exchange with the hot slag above, thereby absorbing heat and heating up. The heated cooling water flows into the water storage tank 21 through the outlet pipe 22. The water storage tank 21 can store the hot water after the heat energy conversion for subsequent production or life use, thereby improving the energy utilization efficiency and converting the blast furnace waste heat that was originally wasted into valuable thermal energy resources; it also reduces environmental pollution. By recycling the blast furnace waste heat, the thermal pollution caused by the direct discharge of high-temperature flue gas is reduced, and the demand for cooling water is also reduced;

[0037] The invention solves the problem that the heat of slag is wasted greatly, a large amount of resources are wasted and the utilization efficiency of pig iron is low in the process of producing molten iron.

[0038] like Figure 2 As shown, in this embodiment, inclined plates 17 are fixedly connected to both sides of the discharge plate 15 , and the two inclined plates 17 are used to protect the water storage tank 21 .

[0039] Specifically, fixed inclined plates 17 are added on both sides of the discharge plate 15. The blocking effect of the inclined plates 17 is utilized to prevent high-temperature slag or flying sparks from directly contacting and damaging the water tank 21, thereby ensuring the integrity of the water tank 21 during the heat recovery process, thereby extending the service life of the entire recovery system.

[0040] Embodiment 2

[0041] like Figures 1 to 5 As shown, compared with Example 1, another embodiment of the present invention is: a positioning plate 3 is provided on one side of the water tank 21, and a cleaning assembly is provided on the upper surface of the positioning plate 3, and the cleaning assembly includes a first motor 31 fixedly connected to the upper surface of the positioning plate 3, and the output end of the first motor 31 is fixedly connected to a fixed shaft 32, and the upper surface of the positioning plate 3 is fixedly connected to a limit plate 34, and the limit plate 34 is rotatably connected to the fixed shaft 32, and one end of the fixed shaft 32 is fixedly connected to a first rotating wheel 35, and the first rotating wheel 35 is transmission-connected to a top plate 314, and a scraper 317 is elastically connected to the lower surface of the top plate 314, and the scraper 317 is matched with the cross-section of the discharge plate 15, and the scraper 317 is used to scrape off the slag on the surface of the discharge plate 15.

[0042] Specifically, during the heat exchange process using the heat exchange plate 23, the slag flowing to the upper surface of the discharge plate 15 will gradually solidify on the discharge plate 15. The existing method is to crush and clean the slag by operators to improve the heat exchange effect of the heat exchange plate 23, but the cleaning process is time-consuming and labor-intensive, resulting in poor heat recovery efficiency. Therefore, a cleaning component is provided to automatically clean the slag. First, the first motor 31 fixed to the upper surface of the positioning plate 3 is started. The first motor 31 drives the fixed shaft 32 to rotate. The fixed shaft 32 is kept in stable rotation through the rotation connection of the limit plate 34, and the first rotating wheel 35 at its end rotates accordingly. The first rotating wheel 35 drives the top plate 314 to move through the transmission device, and the scraper 317 elastically connected to the lower surface of the top plate 314 slides on the surface of the discharge plate 15 accordingly. The shape of the scraper 317 is consistent with the cross-section of the discharge plate 15, ensuring that it can fit tightly and effectively scrape off the accumulated slag. The cleaning process reduces manual intervention and improves production efficiency.

[0043] like Figure 4 As shown, in this embodiment, the first rotating wheel 35 is transmission-connected to the first steel strip 36, and the end of the first steel strip 36 away from the first rotating wheel 35 is transmission-connected to the second rotating wheel 37, and the middle part of the second rotating wheel 37 is fixedly connected to a rotating shaft 38, and the rotating shaft 38 is a reciprocating screw, and the circumferential surface of the rotating shaft 38 is slidingly connected to a sliding block 39, and the upper surface of the sliding block 39 is fixedly connected to the first hydraulic cylinder 313, and the output end of the first hydraulic cylinder 313 is fixedly connected to the top plate 314.

[0044] Specifically, when the first wheel 35 rotates, power is transmitted to the second wheel 37 through the first steel strip 36, driving the second wheel 37 to rotate synchronously. The rotating shaft 38 fixed to the middle of the second wheel 37 is a reciprocating screw, and the sliding block 39 on its circumferential surface slides reciprocatingly accordingly. The first hydraulic cylinder 313 fixed to the upper surface of the sliding block 39 has its output end fixed to the top plate 314. As the sliding block 39 moves, the hydraulic cylinder pushes the top plate 314 and the scraper 317 below it to perform reciprocating scraping operations on the surface of the discharge plate 15. The reciprocating scraping improves the cleaning efficiency and ensures comprehensive cleaning of the surface of the discharge plate 15.

[0045] like Figure 4 As shown, in this embodiment, two telescopic rods 315 are fixedly connected to the lower surface of the top plate 314 , and a same scraper 317 is fixedly connected to the lower surfaces of the two telescopic rods 315 . Springs 316 are sleeved on the circumferential surfaces of the two telescopic rods 315 .

[0046] Specifically, when the top plate 314 moves under the drive of the first hydraulic cylinder 313, the scraper 317, pushed by the elastic force of the spring 316, can adapt to the slight undulations on the surface of the discharge plate 15, achieve a more uniform scraping effect, improve the cleaning efficiency, and enhance the adaptability between the scraper 317 and the discharge plate 15, thereby extending the service life of the equipment.

[0047] like Figure 5 As shown, a first guide rail 311 is fixedly connected to one side of the positioning plate 3 of this embodiment, a first guide groove 312 is provided on the side of the first guide rail 311 close to the sliding block 39, a limiting block 310 is fixedly connected to one side of the sliding block 39, and the sliding block 39 can slide stably along the first guide groove 312 through the limiting block 310.

[0048] Specifically, the sliding block 39 can slide accurately along the first guide groove 312 through the fixed limit block 310, ensuring the stability and accuracy of the movement of the top plate 314 and the scraper 317, the accuracy of the cleaning operation, and effectively preventing the sliding block 39 from shifting during the movement, thereby enhancing the stability and durability of the overall structure.

[0049] like Figure 4 As shown, in this embodiment, a scraper bar 318 is fixedly connected to the lower surface of the sliding block 39 , and the scraper bar 318 is used to clean the residual slag between the positioning plate 3 and the water tank 21 .

[0050] Specifically, during the movement of the sliding block 39, the scraper bar 318 fixed to its lower surface can also be driven to move. The movement of the scraper bar 318 can clean the residual slag between the positioning plate 3 and the water tank 21, thereby improving the cleanliness of the equipment and extending the service life of the equipment.

[0051] like Figure 4As shown, in this embodiment, the circumferential surface of the fixed shaft 32 is fixedly connected with the first bevel gear 33, the first bevel gear 33 is meshed with the second bevel gear 319, the middle part of the second bevel gear 319 is fixedly connected with the auxiliary shaft 321, the upper surface of the positioning plate 3 is fixedly connected with the auxiliary plate 320, the auxiliary plate 320 is rotatably connected with the auxiliary shaft 321, and a crushing assembly is provided at one end of the auxiliary shaft 321, which is used to crush the solidified slag on the upper surface of the discharge plate 15.

[0052] Specifically, when the first motor 31 drives the fixed shaft 32 to rotate, the first bevel gear 33 drives the second bevel gear 319 and the auxiliary shaft 321 fixed thereto to rotate synchronously. The auxiliary shaft 321 realizes stable rotation through the auxiliary plate 320 on the upper surface of the positioning plate 3, and the crushing component arranged at one end thereof moves accordingly, thereby effectively crushing the solidified slag on the upper surface of the discharge plate 15, thereby realizing the automated operation of the crushing component and improving the cleaning efficiency. The setting of the crushing component crushes the solidified slag on the discharge plate 15 that is difficult to scrape off directly, thereby ensuring the thoroughness of the cleaning, so that it can both scrape off the slag and crush the solidified material, further improving the practicability and application range of the equipment.

[0053] like Figure 4 As shown, in this embodiment, a cam 322 is clamped at one end of the auxiliary shaft 321, a fixing column 324 is slidably connected to the upper surface of the positioning plate 3, a connecting disk 323 is fixed to the top of the fixing column 324, a compression spring 325 is fixed to the lower surface of the connecting disk 323, the compression spring 325 is sleeved on the circumferential surface of the fixing column 324, one end of the compression spring 325 away from the connecting disk 323 is fixed to the positioning plate 3, a crushing plate 326 is fixed to the lower surface of the fixing column 324, and a plurality of crushing columns 327 are fixed to the lower surface of the crushing plate 326.

[0054] The cam 322 is clamped on one end of the auxiliary shaft 321 when the crushing assembly is in use. The cam 322 then rotates with the rotation of the auxiliary shaft 321, and the fixing column 324 and the crushing plate 326 on the lower surface thereof are driven to reciprocate through the interaction of the fixing column 324 slidably connected to the upper surface of the positioning plate 3 and the connecting disk 323 at its top. The compression spring 325 on the lower surface of the connecting disk 323 not only provides elastic support for the fixing column 324, but also ensures the close contact between the crushing plate 326 and the discharge plate 15, thereby enhancing the crushing effect. The several crushing columns 327 fixedly connected to the lower surface of the crushing plate 326 further enhance the crushing force and ensure the effective crushing of the solidified steel slag on the discharge plate 15. The reciprocating motion of the crushing plate 326 is realized through the rotation drive of the cam 322 and the elastic support of the compression spring 325, thereby improving the crushing efficiency. The setting of the crushing column 327 enhances the uniformity and thoroughness of the crushing and ensures the cleanliness of the discharge plate 15. At the same time, it is easy to maintain and reduces the use cost of the equipment.

[0055] like Figure 4As shown, a storage box 329 is fixedly connected to the upper surface of the positioning plate 3 of this embodiment, a telescopic tube 328 is fixedly connected to one side of the storage box 329, the telescopic tube 328 is fixedly connected to the crushing plate 326, and a sealing cover 330 is threadedly connected to the upper surface of the storage box 329.

[0056] Specifically, the storage box 329 stores a slag remover, which is fixedly connected to the crushing plate 326 via a telescopic tube 328, so that the slag remover can be sprayed onto the discharge plate 15 along with the movement of the crushing plate 326 to soften and decompose the solidified steel slag. The sealing cover 330 ensures that the storage box 329 is sealed to prevent leakage of the slag remover, and can also facilitate the filling of the slag remover, thereby improving the cleaning efficiency and convenience of the cleaning assembly.

[0057] Working principle: First, during the ironmaking process in the blast furnace tank 1, the high-temperature flue gas generated is discharged through the smoke outlet 12. At the same time, the molten slag in the blast furnace tank 1 will flow out from the slag outlet 14 after cooling. When the slag flows through the discharge plate 15, the large amount of heat energy it carries will be effectively captured by the heat recovery component on the lower surface. The core component of the heat recovery component is the heat exchange plate 23, which fits tightly under the discharge plate 15 and absorbs the heat released by the slag by direct contact. The water inlet pipe 2 provides cooling water for the heat exchange plate 23, and the cooling water flows through When the heat exchanger is inside the heat exchange plate 23, it forms heat exchange with the hot steel slag above, thereby absorbing heat and heating up. The heated cooling water flows into the water storage tank 21 through the outlet pipe 22. The water storage tank 21 can store the hot water after the heat energy conversion for subsequent production or life use, thereby improving the energy utilization efficiency and converting the blast furnace waste heat that was originally wasted into valuable thermal energy resources; it also reduces environmental pollution. By recycling the blast furnace waste heat, the thermal pollution caused by the direct discharge of high-temperature flue gas is reduced, and the demand for cooling water is also reduced;

[0058] In the process of heat exchange using the heat exchange plate 23, the slag flowing to the upper surface of the discharge plate 15 will gradually solidify on the discharge plate 15. The existing operation is to crush and clean it by the operator to improve the heat exchange effect of the heat exchange plate 23, but the cleaning process is time-consuming and labor-intensive, resulting in poor heat recovery efficiency. Therefore, a cleaning component is set to automatically clean it. First, the first motor 31 fixed to the upper surface of the positioning plate 3 is started. The first motor 31 drives the fixed shaft 32 to rotate. The fixed shaft 32 is connected to the limit plate 34 to maintain stable rotation, and the first rotating wheel 35 at the end thereof rotates accordingly. When the first rotating wheel 35 rotates, the first strip steel 36 is used to The power is transmitted to the second rotating wheel 37, driving the second rotating wheel 37 to rotate synchronously. The rotating shaft 38 fixedly connected to the middle of the second rotating wheel 37 is a reciprocating screw, and the sliding block 39 on the circumferential surface thereof slides reciprocatingly accordingly. The first hydraulic cylinder 313 fixedly connected to the upper surface of the sliding block 39 has its output end fixedly connected to the top plate 314. As the sliding block 39 moves, the hydraulic cylinder pushes the top plate 314 and the scraper 317 below it to perform reciprocating scraping operations on the surface of the discharge plate 15. The reciprocating scraping improves the cleaning efficiency, ensures the comprehensive cleaning of the surface of the discharge plate 15, and can closely fit and effectively scrape off the accumulated slag. The cleaning process reduces manual intervention and improves production efficiency.

[0059] At the same time, during the movement of the sliding block 39, the scraper bar 318 fixed to its lower surface can also be driven to move. The movement of the scraper bar 318 can clean the residual steel slag between the positioning plate 3 and the water storage tank 21, thereby improving the cleanliness of the equipment and extending the service life of the equipment.

[0060] The cam 322 is then rotated with the rotation of the auxiliary shaft 321, and the fixed column 324 and the crushing plate 326 on the lower surface thereof are driven to reciprocate through the interaction of the fixed column 324 slidably connected to the upper surface of the positioning plate 3 and the connecting disk 323 at the top thereof. The compression spring 325 on the lower surface of the connecting disk 323 not only provides elastic support for the fixed column 324, but also ensures the close contact between the crushing plate 326 and the discharge plate 15, thereby enhancing the crushing effect. The crushing columns 327 fixed to the lower surface of the crushing plate 326 further enhance the crushing force and ensure the The solidified slag on the discharge plate 15 is effectively crushed. The reciprocating motion of the crushing plate 326 is realized through the rotation drive of the cam 322 and the elastic support of the compression spring 325, thereby improving the crushing efficiency. The setting of the crushing column 327 enhances the uniformity and thoroughness of the crushing, ensures the cleanliness of the discharge plate 15, and is easy to maintain, thereby reducing the use cost of the equipment, realizing the automatic operation of the crushing component, and improving the cleaning efficiency. The setting of the crushing component crushes the solidified slag on the discharge plate 15 that is difficult to scrape off directly, thereby ensuring the thoroughness of the cleaning, so that it can not only scrape off the slag but also crush the solidified material, further improving the practicability and application range of the equipment.

[0061] A slag remover is also stored in the storage box 329, which is fixed to the crushing plate 326 through a telescopic tube 328, so that the slag remover can be sprayed onto the discharge plate 15 as the crushing plate 326 moves, softening and decomposing the solidified steel slag. The sealing cover 330 ensures that the storage box 329 is sealed to prevent leakage of the slag remover, and also facilitates the filling of the slag remover, thereby improving the cleaning efficiency and convenience of the cleaning assembly.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A blast furnace heat energy recovery and utilization device, comprising a blast furnace tank (1), a feed port (11) is provided at the top of the blast furnace tank (1), two smoke exhaust pipes (12) are fixedly connected to the circumferential surface of the top of the blast furnace tank (1), a discharge trough (13) is provided on one side of the circumferential surface of the blast furnace tank (1), a discharge plate (15) is symmetrically provided on the discharge trough (13), a slag outlet (14) is provided on the circumferential surface of the blast furnace tank (1) at a position corresponding to the discharge plate (15), the slag outlet (14) is used for the outflow of steel slag, and a support plate (16) is fixedly connected to the lower surface of the discharge plate (15), characterized in that: A heat recovery component is provided on the lower surface of the discharge plate (15), and the heat recovery component comprises a heat exchange plate (23) fixedly connected to the lower surface of the discharge plate (15), a water inlet pipe (2) is fixedly connected to one side of the heat exchange plate (23), a water outlet pipe (22) is fixedly connected to the lower surface of the heat exchange plate (23), and a water storage tank (21) is fixedly connected to the lower surface of the water outlet pipe (22).

2. A blast furnace heat recovery and utilization device according to claim 1, characterized in that: Inclined plates (17) are fixedly connected to both sides of the discharge plate (15), and the two inclined plates (17) are used to protect the water storage tank (21).

3. The blast furnace heat recovery and utilization device according to claim 1, characterized in that: A positioning plate (3) is provided on one side of the water storage tank (21), and a cleaning assembly is provided on the upper surface of the positioning plate (3). The cleaning assembly comprises a first motor (31) fixedly connected to the upper surface of the positioning plate (3), the output end of the first motor (31) is fixedly connected to a fixed shaft (32), the upper surface of the positioning plate (3) is fixedly connected to a limit plate (34), the limit plate (34) is rotatably connected to the fixed shaft (32), one end of the fixed shaft (32) is fixedly connected to a first rotating wheel (35), the first rotating wheel (35) is transmission-connected to a top plate (314), the lower surface of the top plate (314) is elastically connected to a scraper (317), the scraper (317) is matched with the cross section of the discharge plate (15), and the scraper (317) is used to scrape off the steel slag on the surface of the discharge plate (15).

4. A blast furnace heat recovery and utilization device according to claim 3, characterized in that: The first rotating wheel (35) is drivingly connected to a first steel strip (36); one end of the first steel strip (36) away from the first rotating wheel (35) is drivingly connected to a second rotating wheel (37); a rotating shaft (38) is fixedly connected to the middle of the second rotating wheel (37); the rotating shaft (38) is a reciprocating screw; a sliding block (39) is slidingly connected to the circumferential surface of the rotating shaft (38); a first hydraulic cylinder (313) is fixedly connected to the upper surface of the sliding block (39); an output end of the first hydraulic cylinder (313) is fixedly connected to a top plate (314).

5. The blast furnace heat recovery and utilization device according to claim 3, characterized in that: Two telescopic rods (315) are fixedly connected to the lower surface of the top plate (314), a same scraper (317) is fixedly connected to the lower surfaces of the two telescopic rods (315), and springs (316) are sleeved on the circumferential surfaces of the two telescopic rods (315).

6. A blast furnace heat recovery and utilization device according to claim 3, characterized in that: A first guide rail (311) is fixedly connected to one side of the positioning plate (3); a first guide groove (312) is provided on a side of the first guide rail (311) close to the sliding block (39); a limit block (310) is fixedly connected to one side of the sliding block (39); and the sliding block (39) can slide stably along the first guide groove (312) through the limit block (310).

7. A blast furnace heat recovery and utilization device according to claim 4, characterized in that: A scraper bar (318) is fixedly connected to the lower surface of the sliding block (39), and the scraper bar (318) is used to clean the residual steel slag between the positioning plate (3) and the water storage tank (21).

8. The blast furnace heat recovery and utilization device according to claim 3, characterized in that: The circumferential surface of the fixed shaft (32) is fixedly connected to a first bevel gear (33), the first bevel gear (33) is meshed with a second bevel gear (319), the middle part of the second bevel gear (319) is fixedly connected to an auxiliary shaft (321), the upper surface of the positioning plate (3) is fixedly connected to an auxiliary plate (320), the auxiliary plate (320) is rotatably connected to the auxiliary shaft (321), and a crushing assembly is provided at one end of the auxiliary shaft (321), and the crushing assembly is used to crush the solidified steel slag on the upper surface of the discharge plate (15).

9. A blast furnace heat recovery and utilization device according to claim 8, characterized in that: A cam (322) is clamped at one end of the auxiliary shaft (321); a fixing column (324) is slidably connected to the upper surface of the positioning plate (3); a connecting disk (323) is fixedly connected to the top of the fixing column (324); a compression spring (325) is fixedly connected to the lower surface of the connecting disk (323); the compression spring (325) is sleeved on the circumferential surface of the fixing column (324); one end of the compression spring (325) away from the connecting disk (323) is fixedly connected to the positioning plate (3); a crushing plate (326) is fixedly connected to the lower surface of the fixing column (324); and a plurality of crushing columns (327) are fixedly connected to the lower surface of the crushing plate (326).

10. A blast furnace heat recovery and utilization device according to claim 9, characterized in that: A storage box (329) is fixedly connected to the upper surface of the positioning plate (3), a telescopic tube (328) is fixedly connected to one side of the storage box (329), the telescopic tube (328) is fixedly connected to the crushing plate (326), and a sealing cover (330) is threadedly connected to the upper surface of the storage box (329).

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