Blast furnace heat energy optimizing device

Abstract

The utility model relates to the technical field of blast furnaces, and discloses a blast furnace heat energy optimizing device which comprises a blast furnace body and a waste gas pipe fixedly installed at the top of the blast furnace body in a penetrating mode, a purifying box is arranged above the left side of the waste gas pipe, and the end, away from the blast furnace body, of the waste gas pipe fixedly penetrates and extends into an inner cavity of the purifying box. A filter screen plate is attached to the position, close to the middle, of an inner cavity of the purification box, a cleaning assembly is installed on the right side of the top of the filter screen plate, a sealing opening is formed in the position, close to the middle, of the left side of the purification box, and a sealing plate is inserted into an inner cavity of the sealing opening. According to the waste gas treatment device, the scraping plate can be driven to move on the filter screen plate, impurities on the filter screen plate can be cleaned, particle impurities in waste gas can be filtered through the filter screen plate, the particle impurities are left on the surface, the subsequent filtering effect can be improved through cleaning of the filter screen plate, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnaces, in particular to a blast furnace thermal energy optimization device. Background Art

[0002] With the development of China's steel industry, blast furnace ironmaking technology has also made great progress. As a common method of ironmaking, more and more blast furnaces are being built. Due to the continuous reduction of fossil energy and increasingly fierce market competition, the steel market has encountered new challenges. In addition, the current requirements for energy conservation and emission reduction have led to the continuous reduction of the profit margins of steel companies. Therefore, steel companies need to take active and effective measures to reduce steelmaking costs based on actual conditions.

[0003] When a blast furnace is in use, it will produce a large amount of blast furnace exhaust gas. The exhaust gas has a high temperature and contains a large amount of combustible gas. The existing methods directly discharge the blast furnace exhaust gas into the air, which easily causes heat loss and does not play a role in increasing production and reducing consumption, so that the thermal energy cannot be optimized, reducing the effectiveness of the device.

[0004] Therefore, we proposed a blast furnace thermal energy optimization device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a blast furnace thermal energy optimization device to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blast furnace thermal energy optimization device, comprising a blast furnace body and an exhaust pipe fixedly installed through the top of the blast furnace body, a purification box is provided at the upper left side of the exhaust pipe, and the end of the exhaust pipe away from the blast furnace body is fixedly extended through the inner cavity of the purification box, the inner cavity of the purification box is fitted with a filter screen near the middle, a cleaning component is installed on the right side of the top of the filter screen plate, and a sealing opening is opened on the left side of the purification box near the middle, the inner cavity of the sealing opening is plugged with a sealing plate, a collection trough is fixedly installed on the left side of the purification box near the bottom, and a disassembly and assembly component is installed on the front side of the purification box, a coal powder box is provided below the bottom of the purification box, and a fan is fixedly installed in the middle of the top of the coal powder box, a suction pipe is fixedly installed on the right side of the fan, the upper end of the suction pipe is fixedly extended through the inner cavity of the purification box, and an input pipe is fixedly installed on the left side of the fan, the lower end of the input pipe is fixedly extended through the inner cavity of the coal powder box, and a heat exchange tube disc is fixedly installed;

[0007] The cleaning assembly includes a scraper attached to the right side of the top of the filter screen plate and two threaded sleeves fixedly installed on the top of the scraper, the threaded sleeves are arranged in front and back, and a threaded rod is installed with a thread through the middle of the threaded sleeve, the right end of the threaded rod is movably installed on the inner wall of the inner cavity of the purification box, and the left end of the threaded rod is movably extended to the outside of the purification box, and the output end of the threaded rod is fixedly sleeved with a first single groove wheel and a second single groove wheel, and the outer sides of the first single groove wheel and the second single groove wheel are jointly sleeved with a belt, an L-shaped support plate is fixedly installed on the left side of the purification box near the rear side, and a servo motor is fixedly installed on the left side of the inner side of the L-shaped support plate, and the output end of the servo motor is fixedly connected to the left end of the rear threaded rod.

[0008] Preferably, a plurality of push rods are fixedly mounted on the left side of the scraper near the top, and the push rods are arranged at equal intervals on the scraper.

[0009] Preferably, pads are respectively attached to the left and right sides of the bottom of the filter screen plate, and opposite sides of the pads are respectively fixedly mounted on the inner wall of the inner cavity of the purification box.

[0010] Preferably, the output pipe of the heat exchange tube disc is fixedly extended through the outside of the coal powder box, and the top of the heat exchange tube disc is fixedly installed on the inner wall of the inner cavity of the coal powder box, the lower end of the coal powder box is fixedly installed with a discharge pipe, and a valve is provided on the outside of the discharge pipe, a coal injection gun barrel is provided below the bottom of the coal powder box, and the lower end of the discharge pipe is fixedly extended through the inner cavity of the coal injection gun barrel, the right end of the coal injection gun barrel is fixedly extended through the inner cavity of the blast furnace body, and a connecting pipe is fixedly installed on the left side of the coal injection gun barrel.

[0011] Preferably, a feed pipe is fixedly installed on the left side of the coal powder box near the top, and support rods are fixedly installed on the top of the coal powder box near the left and right sides respectively, and the upper ends of the support rods are fixedly installed on the purification box respectively, and a fixed column is fixedly installed on the right side of the coal powder box near the top, and the right end of the fixed column is fixedly installed on the blast furnace body.

[0012] Preferably, the disassembly and assembly components include a sealing door attached to the front side of the purification box, the rear side of the sealing door is fixedly installed on the filter plate, and connecting plates A are fixedly installed at the middle of the top and bottom of the sealing door, and connecting plates B are respectively provided on the rear sides of the connecting plates A, and the opposite sides of the connecting plates B are respectively fixedly installed on the purification box, and T-shaped bolts are respectively threaded through the connecting plates A and the adjacent connecting plates B.

[0013] Preferably, an L-shaped plate is provided on the left side of the sealing plate, and the right side of the L-shaped plate is fixedly mounted on the collecting trough, and guide rods are movably installed on the L-shaped plate near the front and rear sides, and the right ends of the guide rods are fixedly mounted on the sealing plate, and springs are respectively sleeved on the outer sides of the guide rods, and the two ends of the springs are respectively fixedly mounted on the sealing plate and the L-shaped plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. Through the mutual cooperation between the scraper, push rod, threaded sleeve, threaded rod, belt and servo motor, the scraper can be driven to move on the filter plate to clean the impurities on the filter plate, because the filter plate will filter the particulate impurities in the exhaust gas and leave them on the surface. Cleaning the filter plate can improve the effect of subsequent filtration and has a good use effect.

[0016] 2. Through the mutual cooperation between the sealing door, connecting plate A, connecting plate B and T-shaped bolts, the sealing door can be installed and disassembled, so that the filter plate can be disassembled and assembled, and it can be taken out after long-term use. Because after long-term use, impurities will remain in the internal aperture of the filter plate and it cannot be scraped off. Taking it out can be rinsed more thoroughly, which has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall three-dimensional diagram of the utility model;

[0018] Figure 2 It is a partial cross-sectional perspective view of the present utility model;

[0019] Figure 3 It is a partial cross-sectional expanded perspective view of the utility model;

[0020] Figure 4 It is a partial cross-sectional perspective view of the purification box of the present invention;

[0021] Figure 5 It is a partial bottom-view sectional perspective view of the present invention;

[0022] Figure 6 It is a partial cross-sectional perspective view of the pulverized coal box of the present utility model;

[0023] Figure 7 It is a right side perspective view of a partial cross section of the present invention;

[0024] Figure 8 It is a partial bottom-view cross-sectional expanded three-dimensional view of the present invention;

[0025] Figure 9 For the utility model Figure 3 Enlarged view of point A in the middle;

[0026] Figure 10 For the utility model Figure 3 Enlarged view of point B in the middle.

[0027] In the figure: 1. Blast furnace body; 2. Exhaust gas pipe; 3. Purification box; 4. Filter plate; 41. Pad; 5. Cleaning assembly; 51. Scraper; 511. Push rod; 52. Threaded sleeve; 53. Threaded rod; 54. Belt; 55. Servo motor; 6. Sealing plate; 61. L-shaped plate; 62. Guide rod; 63. Spring; 7. Collecting trough; 8. Disassembly and assembly assembly; 81. Sealing door; 82. Connecting plate A; 83. Connecting plate B; 84. T-bolt; 9. Pulverized coal box; 91. Feed pipe; 92. Support rod; 93. Fixing column; 10. Fan; 20. Heat exchange tube coil; 30. Coal injection gun tube. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figure 1-10 , a blast furnace thermal energy optimization device, including a blast furnace body 1 and an exhaust pipe 2 fixedly installed on the top of the blast furnace body 1, a purification box 3 is provided at the upper part of the left side of the exhaust pipe 2, and the exhaust pipe 2 is fixedly extended to the inner cavity of the purification box 3 at one end away from the blast furnace body 1, a filter screen plate 4 is attached to the inner cavity of the purification box 3 near the middle, a cleaning component 5 is installed on the right side of the top of the filter screen plate 4, and a sealing port is opened on the left side of the purification box 3 near the middle, and a sealing plate 6 is inserted into the inner cavity of the sealing port, a collecting tank 7 is fixedly installed near the bottom of the left side of the purification box 3, and a It is equipped with a disassembly and assembly component 8, a coal powder box 9 is provided below the bottom of the purification box 3, and a fan 10 is fixedly installed in the middle of the top of the coal powder box 9, a suction pipe is fixedly installed on the right side of the fan 10, and the upper end of the suction pipe is fixedly extended through the inner cavity of the purification box 3, and an input pipe is fixedly installed on the left side of the fan 10, and the lower end of the input pipe is fixedly extended through the inner cavity of the coal powder box 9, and a heat exchange tube disc 20 is fixedly installed. The setting of the cleaning component 5 can realize the cleaning of impurities on the filter screen plate 4, and the setting of the disassembly and assembly component 8 can realize the disassembly and cleaning of the filter screen plate 4, and the cleaning effect is better.

[0030] The cleaning assembly 5 includes a scraper 51 attached to the right side of the top of the filter plate 4 and two threaded sleeves 52 fixedly installed on the top of the scraper 51. The threaded sleeves 52 are arranged front and back, and a threaded rod 53 is threadedly installed at the middle part of the threaded sleeves 52. The right end of the threaded rod 53 is movably installed on the inner wall of the inner cavity of the purification box 3, and the left end of the threaded rod 53 is movably extended to the outside of the purification box 3, and the output end of the threaded rod 53 is fixedly sleeved with a first single groove wheel and a second single groove wheel, and a belt 54 is jointly sleeved on the outer sides of the first single groove wheel and the second single groove wheel. An L-shaped support plate is fixedly installed on the left side of the purification box 3 near the rear side, and a servo motor 55 is fixedly installed on the left side of the inner side of the L-shaped support plate. The output end of the servo motor 55 is fixedly connected to the left end of the rear threaded rod 53, which can drive the scraper 51 to move to scrape off impurities on the filter plate 4, without the need for staff to repeatedly disassemble and clean the filter plate 4.

[0031] Several push rods 511 are fixedly installed on the left side of the scraper 51 near the top, and the push rods 511 are arranged at equal intervals on the scraper 51. The setting of the push rods 511 can push the sealing plate 6 to move a certain distance, making it convenient for impurities to fall into the collection tank 7 through the sealing port.

[0032] Pads 41 are respectively attached to the left and right sides of the bottom of the filter screen plate 4 , and opposite sides of the pads 41 are respectively fixedly mounted on the inner wall of the inner cavity of the purification box 3 to support the filter screen plate 4 .

[0033] The output pipe of the heat exchange tube disc 20 is fixedly extended to the outside of the pulverized coal box 9. The output pipe can be connected to the external exhaust gas treatment equipment, and the top of the heat exchange tube disc 20 is fixedly installed on the inner wall of the inner cavity of the pulverized coal box 9. The lower end of the pulverized coal box 9 is fixedly installed with a discharge pipe, and a valve is provided on the outside of the discharge pipe. A coal injection gun pipe 30 is provided below the bottom of the pulverized coal box 9, and the lower end of the discharge pipe is fixedly extended to the inner cavity of the coal injection gun pipe 30. The right end of the coal injection gun pipe 30 is fixedly extended to the inner cavity of the blast furnace body 1, and a connecting pipe is fixedly installed on the left side of the coal injection gun pipe 30. The setting of the connecting pipe is conducive to connection with external compressed gas equipment, which is conducive to the utilization of exhaust gas, thereby preheating the pulverized coal in the pulverized coal box 9 and playing an optimization role.

[0034] A feed pipe 91 is fixedly installed on the left side of the coal powder box 9 near the top, and support rods 92 are fixedly installed on the left and right sides of the top of the coal powder box 9 respectively. The upper ends of the support rods 92 are fixedly installed on the purification box 3 respectively. A fixed column 93 is fixedly installed on the right side of the coal powder box 9 near the top, and the right end of the fixed column 93 is fixedly installed on the blast furnace body 1, which is beneficial to feeding and supporting.

[0035] An L-shaped plate 61 is provided on the left side of the sealing plate 6, and the right side of the L-shaped plate 61 is fixedly mounted on the collecting trough 7, and guide rods 62 are movably installed on the front and rear sides of the L-shaped plate 61, and the right ends of the guide rods 62 are fixedly mounted on the sealing plate 6, and springs 63 are respectively sleeved on the outer sides of the guide rods 62, and the two ends of the spring 63 are respectively fixedly mounted on the sealing plate 6 and the L-shaped plate 61, which is beneficial to the movement and restoration of the sealing plate 6.

[0036] In this embodiment: when in use, molten iron can be smelted through the setting of the blast furnace body 1, and the operation of the fan 10 can suck the exhaust gas generated during the smelting process into the interior of the heat exchange tube disc 20 in the pulverized coal box 9 through the exhaust pipe 2, thereby exchanging heat with the pulverized coal inside the pulverized coal box 9 to achieve the purpose of preheating the pulverized coal. The preheated pulverized coal enters the interior of the coal injection gun tube 30 and is blown into the interior of the blast furnace body 1 by compressed gas, providing energy for the smelting of molten iron and achieving the effect of thermal energy optimization. Before the exhaust gas enters the heat exchange tube disc 20, the particulate impurities therein will be filtered through the filter plate 4, and after use, the servo motor 55 can be operated. When the servo motor 55 is running, it will drive the rear threaded rod 53 to rotate, and then the belt 54 drives it. When the screw threaded rod 53 rotates, it drives the adjacent screw threaded sleeve 52 to move to the left. When the screw threaded sleeve 52 moves to the left, it drives the scraper 51 to move on the filter screen 4, thereby pushing the impurities on it to the left. After moving a certain distance, the push rod 511 on the scraper 51 will contact the sealing plate 6. As the scraper 51 continues to move, the push rod 511 will squeeze the sealing plate 6 to move to the left and squeeze the spring 63. At this time, the sealing plate 6 can be slowly moved away from the sealing port, so that the impurities fall into the collecting tank 7 through the sealing port for collection. After cleaning is completed, the reverse operation can be performed to move the scraper 51 to the right to restore. At this time, the push rod 511 will slowly move away from the sealing plate 6, and the sealing plate 6 will be restored under the action of the rebound force of the spring 63.

[0037] Example 2: This example is an improvement made on the basis of Example 1. For details, please refer to Figure 1 and Figure 10 The disassembly and assembly component 8 includes a sealing door 81 attached to the front side of the purification box 3, and the rear side of the sealing door 81 is fixedly installed on the filter screen plate 4. The middle parts of the top and bottom of the sealing door 81 are respectively fixedly installed with connecting plates A82, and the rear sides of the connecting plates A82 are respectively provided with connecting plates B83, and the opposite sides of the connecting plates B83 are respectively fixedly installed on the purification box 3. T-shaped bolts 84 are respectively threaded through the connecting plates A82 and the adjacent connecting plates B83, which can realize the disassembly of the filter screen plate 4 and can be cleaned more thoroughly after a period of time.

[0038] In this embodiment, after long-term use, the upper and lower T-bolts 84 can be rotated to move them away from the adjacent connecting plate B83. At this time, the sealing door 81 can be moved forward to remove the sealing door 81, thereby also driving the filter plate 4 to move to the outside of the purification box 3, which is beneficial for the staff to clean it more thoroughly. After cleaning, the reverse operation can restore the filter plate 4 to its original position.

[0039] Working principle: When in use, molten iron can be smelted through the setting of the blast furnace body 1, and the operation of the fan 10 can suck the exhaust gas generated during the smelting process into the inside of the heat exchange tube disc 20 in the pulverized coal box 9 through the exhaust pipe 2, thereby exchanging heat with the pulverized coal inside the pulverized coal box 9 to achieve the purpose of preheating the pulverized coal. The preheated pulverized coal enters the coal injection gun tube 30 and is blown into the inside of the blast furnace body 1 by compressed gas, providing energy for the smelting of molten iron and achieving the effect of thermal energy optimization. Before the exhaust gas enters the heat exchange tube disc 20, the particulate impurities therein will be filtered through the filter plate 4. After use, the servo motor 55 can be operated. When the servo motor 55 is running, it will drive the rear threaded rod 53 to rotate, and then drive the front and rear threaded rods 53 to rotate synchronously under the transmission of the belt 54. When the threaded rod 53 rotates, it will drive the adjacent threaded sleeve 52 to move to the left, and when the threaded sleeve 52 moves to the left, it will move together The scraper 51 is driven to move on the filter screen plate 4, and the impurities on it can be pushed to the left. After moving a certain distance, the push rod 511 on the scraper 51 will contact the sealing plate 6. As the scraper 51 continues to move, the push rod 511 will squeeze the sealing plate 6 to move to the left and squeeze the spring 63. At this time, the sealing plate 6 can be slowly moved away from the sealing port, so that the impurities fall into the collecting tank 7 through the sealing port for collection. After cleaning is completed, the reverse operation can be performed to move the scraper 51 to the right to restore. At this time, the push rod 511 will slowly move away from the sealing plate 6, and the sealing plate 6 will restore under the action of the rebound force of the spring 63. After long-term use, the T-shaped bolts 84 on the upper and lower sides can be rotated to make it away from the adjacent connecting plate B83. At this time, the sealing door 81 can be moved forward to remove the sealing door 81, thereby also driving the filter screen plate 4 to move to the outside of the purification box 3, which is beneficial for the staff to clean it more thoroughly. After cleaning is completed, the reverse operation can restore the filter screen plate 4 to its original position.

[0040] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blast furnace thermal energy optimization device, comprising a blast furnace body (1) and an exhaust gas pipe (2) fixedly installed through the top of the blast furnace body (1), characterized in that: A purification box (3) is provided above the left side of the exhaust pipe (2), and one end of the exhaust pipe (2) away from the blast furnace body (1) is fixedly extended through the inner cavity of the purification box (3), a filter screen plate (4) is attached to the inner cavity of the purification box (3) near the middle, a cleaning assembly (5) is installed on the right side of the top of the filter screen plate (4), and a sealing port is opened near the middle of the left side of the purification box (3), a sealing plate (6) is inserted into the inner cavity of the sealing port, and a collecting tank is fixedly installed near the bottom of the left side of the purification box (3) (7), and a disassembly assembly (8) is installed on the front side of the purification box (3), a coal powder box (9) is provided below the bottom of the purification box (3), and a fan (10) is fixedly installed in the middle of the top of the coal powder box (9), a suction pipe is fixedly installed on the right side of the fan (10), the upper end of the suction pipe is fixedly extended through the inner cavity of the purification box (3), and an input pipe is fixedly installed on the left side of the fan (10), the lower end of the input pipe is fixedly extended through the inner cavity of the coal powder box (9), and a heat exchange tube coil (20) is fixedly installed; The cleaning assembly (5) comprises a scraper (51) attached to the right side of the top of the filter screen plate (4) and two threaded sleeves (52) fixedly mounted on the top of the scraper (51), the threaded sleeves (52) are arranged front and back, and a threaded rod (53) is respectively threadedly installed at the middle part of the threaded sleeve (52), the right end of the threaded rod (53) is respectively movably mounted on the inner wall of the inner cavity of the purification box (3), the left end of the threaded rod (53) is respectively movably penetrated and extended to the outside of the purification box (3), and the output end of the threaded rod (53) is respectively fixedly sleeved with a first single groove wheel and a second single groove wheel, and the outer sides of the first single groove wheel and the second single groove wheel are jointly sleeved with a belt (54), an L-shaped support plate is fixedly mounted on the left side of the purification box (3) near the rear side, and a servo motor (55) is fixedly mounted on the left side of the inner side of the L-shaped support plate, and the output end of the servo motor (55) is fixedly connected to the left end of the rear threaded rod (53).

2. A blast furnace thermal energy optimization device according to claim 1, characterized in that: A plurality of push rods (511) are fixedly installed on the left side of the scraper (51) near the top, and the push rods (511) are arranged at equal intervals on the scraper (51).

3. The blast furnace thermal energy optimization device according to claim 1, characterized in that: Pads (41) are respectively attached to the left and right sides of the bottom of the filter screen plate (4), and opposite sides of the pads (41) are respectively fixedly mounted on the inner wall of the inner cavity of the purification box (3).

4. The blast furnace thermal energy optimization device according to claim 1, characterized in that: The output pipe of the heat exchange tube coil (20) is fixedly extended through the outside of the coal powder box (9), and the top of the heat exchange tube coil (20) is fixedly installed on the inner wall of the inner cavity of the coal powder box (9). A discharge pipe is fixedly installed at the lower end of the coal powder box (9), and a valve is provided on the outer side of the discharge pipe. A coal injection gun tube (30) is provided below the bottom of the coal powder box (9), and the lower end of the discharge pipe is fixedly extended through the inner cavity of the coal injection gun tube (30). The right end of the coal injection gun tube (30) is fixedly extended through the inner cavity of the blast furnace body (1), and a connecting pipe is fixedly installed on the left side of the coal injection gun tube (30).

5. The blast furnace thermal energy optimization device according to claim 1, characterized in that: A feed pipe (91) is fixedly installed on the left side of the pulverized coal box (9) near the top, and support rods (92) are fixedly installed on the left and right sides of the top of the pulverized coal box (9), and the upper ends of the support rods (92) are fixedly installed on the purification box (3). A fixing column (93) is fixedly installed on the right side of the pulverized coal box (9) near the top, and the right end of the fixing column (93) is fixedly installed on the blast furnace body (1).

6. The blast furnace thermal energy optimization device according to claim 1, characterized in that: The disassembly assembly (8) includes a sealing door (81) attached to the front side of the purification box (3), the rear side of the sealing door (81) is fixedly mounted on the filter screen plate (4), a connecting plate A (82) is fixedly mounted at the middle of the top and bottom of the sealing door (81), and a connecting plate B (83) is provided on the rear side of the connecting plate A (82), and the opposite side of the connecting plate B (83) is fixedly mounted on the purification box (3), and a T-shaped bolt (84) is threadedly installed between the connecting plate A (82) and the adjacent connecting plate B (83).

7. The blast furnace thermal energy optimization device according to claim 1, characterized in that: An L-shaped plate (61) is provided on the left side of the sealing plate (6), and the right side of the L-shaped plate (61) is fixedly mounted on the collecting trough (7). Guide rods (62) are movably mounted on the front and rear sides of the L-shaped plate (61), and the right ends of the guide rods (62) are fixedly mounted on the sealing plate (6). Springs (63) are sleeved on the outer sides of the guide rods (62), and the two ends of the springs (63) are fixedly mounted on the sealing plate (6) and the L-shaped plate (61).

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