Flue gas purification device for iron-making blast furnace

Abstract

The utility model relates to the technical field of flue gas purification, and discloses an ironmaking blast furnace flue gas purification device which comprises an ironmaking blast furnace body and a purification shell, a connecting pipe is jointly installed between the ironmaking blast furnace body and the purification shell, and a liquid sprayer communicated with the inside of the purification shell is installed outside the purification shell. The liquid sprayer is used for purifying the flue gas in the purification shell; the purification mechanism synchronously rotates forwards and backwards in the purification shell, residues on the inner wall of the purification shell are cleaned in multiple directions in a reciprocating manner, and a scraping rod, a brush head, a first connecting column and a second connecting column are arranged, so that the scraping rod and the brush head can synchronously rotate forwards and backwards in the purification shell, and the residues on the inner wall of the purification shell are conveniently cleaned in different directions; and meanwhile, the scraping rod and the brush head can be mutually shifted through forward and reverse rotation of the scraping rod and the brush head, residues on the brush head and the scraping rod can be conveniently cleaned, and therefore the purification device can effectively remove smoke dust and pollutants, and the smoke purification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas purification, in particular to a flue gas purification device for an ironmaking blast furnace. Background Art

[0002] A blast furnace is an industrial facility used to produce pig iron. It mixes iron ore, coking coal, and additives (such as limestone) at high temperatures. Through a series of chemical reactions, the iron in the ore is extracted. During the ironmaking process, blast furnaces produce large amounts of flue gas, which contains harmful substances such as sulfur dioxide, nitrogen oxides, and dust. These substances have potential negative impacts on air quality and the ecological environment, so purification equipment is required to treat these harmful substances in the flue gas.

[0003] The Chinese patent with announcement number CN210321251U discloses a blast furnace iron molten dust water purification device, in which a rotatable cleaning component is set inside the purification device, and the liquid sprayed at high speed from the liquid outlet pipe hits the stirring blade on the cleaning component. Since the stirring blade is spiral, the fluid force of the liquid is applied to the stirring blade, causing the stirring blade to rotate around the central axis, and the brush attached to the end of the stirring blade fits the inner wall of the shell, thereby cleaning the residue adhered to the inner wall, so that the inner wall of the purification device shell is always in a clean state, ensuring the normal use of the purification device; however, there is a lot of flue gas inside the purification device, so that the liquid adheres to the particulate matter in the flue gas after being sprayed to form residue, and some of the residue is adsorbed on the inner wall of the purification device, so that the brush is easily adhered to the inside of the brush when it fits with the inside of the shell for cleaning, resulting in the accumulation of residue inside the brush. The accumulation of residue will affect the cleaning effect of the brush, thereby causing the purification device to be unable to effectively remove smoke and pollutants, reducing the purification efficiency of the flue gas. Utility Model Content

[0004] The purpose of the present utility model is to provide a flue gas purification device for an iron-making blast furnace, which solves the problem in the background technology that the scraper rod, the brush head, the first connecting column and the second connecting column are arranged, so that the scraper rod and the brush head can rotate synchronously in the forward and reverse directions in the purification shell, which is convenient for cleaning the residue on the inner wall of the purification shell in different directions. At the same time, the forward and reverse rotation of the scraper rod and the brush head can push each other to facilitate cleaning of the residue on the brush head and the scraper rod, and can avoid the accumulation of residue inside the brush head affecting the cleaning effect of the purification shell, so that the purification device can effectively remove smoke and pollutants and improve the purification efficiency of the flue gas.

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

[0006] A flue gas purification device for an ironmaking blast furnace, comprising:

[0007] The ironmaking blast furnace body and the purification shell are provided with a connecting pipe between the ironmaking blast furnace body and the purification shell. A liquid sprayer is provided on the outside of the purification shell and is communicated with the inside of the purification shell. The liquid sprayer is used to purify the flue gas in the purification shell.

[0008] The purification mechanism realizes synchronous forward and reverse rotation in the purification shell, and cleans the residue on the inner wall of the purification shell in a reciprocating and multi-directional manner. The purification mechanism includes a channel rack fixed in the purification shell, a first connecting column rotatably installed at the bottom end of the channel rack, and two scraping rods symmetrically installed in the purification shell, and there is a distance between the two scraping rods and the first connecting column. The outside of the first connecting column is fixedly sleeved with a connecting plate, and a plurality of stirring blades are fixed to the outside of the connecting plate. Multiple groups of brush heads are fixed to the outside of the multiple stirring blades, and the multiple groups of brush heads pass through the two scraping rods and fit into the inner wall of the purification shell. A synchronization component is provided in the channel rack for driving the first connecting column and the two scraping rods to rotate synchronously. An adjustment component is provided in the synchronization component for adjusting the distance between the scraping rods between the multiple groups of brush heads and the purification shell.

[0009] Preferably, a swing block is fixed between the brush head and the stirring blade, and two soft scraping strips are symmetrically fixed on the outside of the scraper rod, and the curvature of the outside of the swing block is matched with the scraper rod and the soft scraping strip; so that there is floating between the stirring blade and the scraper rod, avoiding conflict between the stirring blade and the scraper rod, which is beneficial to the effective cleaning of the inner wall of the purification shell by the brush head and the scraper rod, and the soft scraping strip makes the scraper rod and the purification shell in soft contact, avoiding scratches when the scraper rod scrapes the inner wall of the purification shell.

[0010] Preferably, the synchronization assembly includes a first gear rotatably connected to the top wall inside the channel frame, a third gear fixed to the top of the first connecting column, and a second gear rotatably connected to the channel frame and meshing with the first gear, and the third gear is located in the channel frame and meshes with the second gear. A servo motor is fixed to the outside of the purification shell, and one end of the servo motor extends into the channel frame and is fixed to one end of the second gear. A second connecting column is fixed to one end of the first gear, and one end of the second connecting column passes through the third gear and is rotatably sleeved on the outside of the first connecting column.

[0011] Preferably, the adjustment component includes a fixed plate fixedly sleeved on the outside of the second connecting column, a fault column fixedly connected to the top of the scraper rod, and an outer screw sleeve fixed to one end of the fixed plate, and one end of the outer screw sleeve is provided with a through groove for inserting the fault column, and the outer screw sleeve is provided with a fixing component for locking the fault column in the through groove.

[0012] Preferably, the fixing assembly includes an inner screw sleeve sleeved on the fault column and a plurality of elastic gaskets fixed to one end of the outer screw sleeve, and the inner screw sleeve is screwed onto the outside of the outer screw sleeve, and a gasket matching the elastic gasket is fixed to one end of the inner screw sleeve, and the gasket is sleeved onto the outside of the fault column.

[0013] Preferably, an inclined plate is further fixed to the outside of the elastic gasket, and a limiting groove matching the inclined plate is provided in the gasket ring; and the limiting groove and the inclined plate are matched in inclination, so that when the gasket moves to the left along the elastic gasket, an inclined conflict is formed between the limiting groove and the inclined plate, and then the elastic gasket is squeezed along the gasket ring toward the outside of the fault column, so that the bottom of the elastic gasket is stably fitted with the outside of the fault column, which facilitates the stable fixation of the fault column in the through groove.

[0014] Preferably, the channel rack and the purification shell are combined to form a W-shaped structure; through the W-shaped setting, the dead zone in the flow of flue gas in the purification shell can be reduced, making the flue gas flow more uniform, reducing the reduction in purification efficiency caused by the flow dead zone, and improving the flue gas purification effect.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] 1. Through the arrangement of the scraper rod, the brush head, the first connecting column and the second connecting column, the scraper rod and the brush head can be synchronously rotated forward and reverse in the purification shell, which is convenient for cleaning the residue on the inner wall of the purification shell in different directions. At the same time, the forward and reverse rotation of the scraper rod and the brush head can move each other to facilitate cleaning of the residue on the brush head and the scraper rod, which can avoid the accumulation of residue inside the brush head and affect the cleaning effect of the purification shell, so that the purification device can effectively remove smoke and pollutants and improve the purification efficiency of the flue gas.

[0017] 2. Through the setting of the synchronization component, the brush head and the scraper rod can be used to maintain synchronous operation, thereby improving the force transmission efficiency of the equipment. At the same time, the synchronous rotation of the brush head and the scraper rod enables them to move and clean each other, thereby reducing the time required for cleaning the residue in the purification shell, improving the overall operating efficiency, and further enhancing the practicality of the purification device.

[0018] 3. By setting up the channel rack and the purification shell, and forming a W-shaped channel between the channel rack and the purification shell, the dead zone of the flue gas flowing in the purification shell can be reduced, making the flue gas flow more uniform, reducing the reduction in purification efficiency caused by the flow dead zone, and improving the flue gas purification effect.

[0019] 4. By adjusting the setting of the component, the distance between the scraper rod and the purification shell can be adjusted, which not only ensures the effective cleaning of the residue in the brush head, but also prevents the situation where the distance between the scraper rod and the purification shell is too far, resulting in a decrease in the cleaning effect, thereby ensuring the smooth operation of the entire purification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure;

[0021] Figure 2 It is a partial cross-sectional view of the purification shell;

[0022] Figure 3 It is a structural diagram of the synchronization component;

[0023] Figure 4 for Figure 2 A magnified view of the structure at center A;

[0024] Figure 5 Schematic diagram of the structure of the adjustment component.

[0025] Among them: 1. Ironmaking blast furnace body; 11. Purification shell; 12. Connecting pipe; 13. Liquid sprayer;

[0026] 2. Purification mechanism; 21. First connecting column; 22. Connecting plate; 23. Stirring blade; 24. Swing block; 25. Brush head; 26. Scraping rod; 27. Soft scraping strip; 28. Channel rack;

[0027] 3. Synchronizing assembly; 31. First gear; 32. Second gear; 33. Second connecting column; 34. Third gear; 35. Servo motor;

[0028] 4. Adjustment assembly; 41. Fault column; 42. Fixed plate; 43. Inner screw sleeve; 44. Outer screw sleeve; 45. Elastic gasket; 46. Gasket; 47. Limiting groove. DETAILED DESCRIPTION

[0029] 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.

[0030] Please refer to Figure 1-5 , a blast furnace flue gas purification device, comprising:

[0031] The iron-making blast furnace body 1 and the purification shell 11, a connecting pipe 12 is installed between the iron-making blast furnace body 1 and the purification shell 11, and the outside of the purification shell 11 is installed with a liquid sprayer 13 that is communicated with its interior, and the liquid sprayer 13 is used to purify the flue gas in the purification shell 11; the structure and principle of the purification shell 11 and the liquid sprayer 13 are existing technologies, and its specific heating principle is existing technologies. Please refer to the comparative document (publication number CN210321251U, patent name is A blast furnace molten iron smoke water purification device), which will not be repeated here.

[0032] The purification mechanism 2 is configured to realize synchronous forward and reverse rotation in the purification shell 11, and to clean the residue on the inner wall of the purification shell 11 in a reciprocating multi-directional manner. The purification mechanism 2 includes a channel frame 28 fixed in the purification shell 11, a first connecting column 21 rotatably mounted at the bottom end of the channel frame 28, and two scraping rods 26 symmetrically mounted in the purification shell 11, and there is a distance between the two scraping rods 26 and the first connecting column 21. The outside of the first connecting column 21 is fixedly sleeved with a connecting plate 22, and the outside of the connecting plate 22 is fixed with a plurality of stirring blades 23. The outside of the plurality of stirring blades 23 is fixed with a plurality of brush heads 25, and the plurality of groups The brush head 25 passes through two scraper rods 26 and fits against the inner wall of the purification shell 11. A synchronization component 3 is provided in the channel frame 28, which is used to drive the first connecting column 21 and the two scraper rods 26 to rotate synchronously. An adjustment component 4 is provided in the synchronization component 3, which is used to adjust the distance between the scraper rods 26 between multiple groups of brush heads 25 and the purification shell 11; the channel frame 28 and the purification shell 11 are combined to form a W-shaped structure; a swing block 24 is also fixed between the brush head 25 and the stirring blade 23, and two soft scraper strips 27 are symmetrically fixed to the outside of the scraper rod 26, and the outside of the swing block 24 is matched with the curvature between the scraper rod 26 and the soft scraper strip 27.

[0033] The synchronization assembly 3 includes a first gear 31 rotatably connected to the top wall of the channel frame 28, a third gear 34 fixed to the top of the first connecting column 21, and a second gear 32 rotatably connected to the channel frame 28 and meshing with the first gear 31. The third gear 34 is located in the channel frame 28 and meshes with the second gear 32. A servo motor 35 is fixed to the outside of the purification shell 11, and one end of the servo motor 35 extends into the channel frame 28 and is fixed to one end of the second gear 32. A second connecting column 33 is fixed to one end of the first gear 31, and one end of the second connecting column 33 passes through the third gear 34 and is rotatably sleeved on the outside of the first connecting column 21.

[0034] Through the above technical solution:

[0035] When the purification shell 11 is in the process of purifying the flue gas generated by ironmaking, and the residue adsorbed on the inner wall of the purification shell 11 needs to be processed, first, the ironmaking process is carried out inside the ironmaking blast furnace body 1, and the flue gas generated is transported to the purification shell 11 by the connecting pipe 12, and the liquid spraying operation is carried out by the sprayer 13, and the stirring blade 23 can change the flow direction of the reaction liquid, so that the flue gas and the reactant can fully react, thereby improving the purification efficiency of the flue gas; and the servo motor 35 drives the second gear 32 to rotate, and then the second gear 32 rotates and engages with the first gear 31 to drive the second connecting column 33 to rotate inside the third gear 34 and outside the first connecting column 21. At this time, the second gear 32 rotates and engages with the third gear 34 to drive the third gear 34 to rotate in the channel frame 28, and then the first connecting column 21 rotates along the bottom end of the channel frame 28, so that the second connecting column 33 and the first connecting column 21 rotate synchronously in forward and reverse directions. However, the rotation of the second connecting column 33 drives the adjustment component 4 to rotate synchronously, so that The adjustment component 4 rotates and drives the two scraping rods 26 and the soft scraping strip 27 to rotate and clean along the inner wall of the purification shell 11. The two scraping rods 26 and the soft scraping strip 27 rotate and pass through the brush head 25. Then the outer sides of the two scraping rods 26 form a conflict with the inner side of the brush head 25 and move the brush head 25 to clean the residue in the brush head 25. As the first connecting column 21 rotates, the stirring blade 23, the swing block 24 and the brush head 25 rotate, so that the brush head 25 rotates and cleans along the inner wall of the purification shell 11. Then the brush head 25 rotates and passes through the two scraping rods 26 and the soft scraper 27, then the inside of the brush head 25 comes into conflict with the outside of the scraper rod 26 and the soft scraper strip 27 and moves the outside of the scraper rod 26 and the soft scraper strip 27, so that the external residue of the scraper rod 26 and the soft scraper strip 27 is cleaned, and the brush head 25 and the scraper rod 26 rotate synchronously forward and reverse, which not only cleans the residue in the purification shell 11 but also cleans the residue between each other, thereby improving the cleaning effect of the residue in the purification shell 11, so that the purification device can effectively remove smoke and pollutants and improve the purification efficiency of the flue gas.

[0036] The adjusting assembly 4 includes a fixed plate 42 fixedly sleeved on the outside of the second connecting column 33, a fault column 41 fixedly connected to the top of the scraper rod 26, and an outer screw sleeve 44 fixed to one end of the fixed plate 42, and one end of the outer screw sleeve 44 is provided with a through groove for inserting the fault column 41, and the outer screw sleeve 44 is provided with a fixing assembly for locking the fault column 41 in the through groove; the fixing assembly includes an inner screw sleeve 43 sleeved on the fault column 41 and a plurality of elastic gaskets 45 fixed to one end of the outer screw sleeve 44, and the inner screw sleeve 43 is screwed onto the outside of the outer screw sleeve 44, one end of the inner screw sleeve 43 is fixed with a backing ring 46 that cooperates with the elastic gasket 45, and the backing ring 46 is sleeved on the outside of the fault column 41; an inclined plate is also fixed to the outside of the elastic gasket 45, and a limiting groove 47 that cooperates with the inclined plate is provided in the backing ring 46.

[0037] Through the above technical solution:

[0038] When the distance between the scraper 26 and the cleaning shell 11 needs to be adjusted, the inner screw sleeve 43 is rotated to engage with the outer screw sleeve 44, and then the inner screw sleeve 43 moves to the right along the outer screw sleeve 44. At this time, the washer 46 moves to the right along the elastic gasket 45, and the inclined distance between the limiting groove 47 and the inclined plate is continuously increasing, reducing the extrusion of the inclined plate, thereby loosening the elastic gasket 45 and the fault column 41. As the fault column 41 is pulled along the through groove and the inner screw sleeve 44, the inner screw sleeve 43 moves to the right along the outer screw sleeve 44. 3 and the limiting groove 47, so that the distance between the scraper rod 26 and the soft scraper strip 27 and the brush head 25 and the purification shell 11 is adjusted; after the distance of the scraper rod 26 is adjusted, the inner screw sleeve 43 is rotated in the opposite direction to ensure that the scraper rod 26 and the soft scraper strip 27 remain stable between the brush head 25 and the purification shell 11, which can not only ensure the effective cleaning of the residue in the brush head 25, but also prevent the situation where the distance between the scraper rod 26 and the purification shell 11 is too far, resulting in a decrease in the cleaning effect, thereby ensuring the smooth operation of the entire purification device.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blast furnace flue gas purification device, characterized in that: include: An ironmaking blast furnace body (1) and a purification shell (11), wherein a connecting pipe (12) is installed between the ironmaking blast furnace body (1) and the purification shell (11), and a liquid sprayer (13) is installed on the outside of the purification shell (11) so as to communicate with the inside thereof, and the liquid sprayer (13) is used to purify the flue gas in the purification shell (11); The purification mechanism (2) is configured to realize synchronous forward and reverse rotation in the purification shell (11) and to reciprocate and multi-directionally clean the residue on the inner wall of the purification shell (11). The purification mechanism (2) comprises a channel frame (28) fixed in the purification shell (11), a first connecting column (21) rotatably mounted at the bottom end of the channel frame (28), and two scraping rods (26) symmetrically mounted in the purification shell (11), and a distance exists between the two scraping rods (26) and the first connecting column (21). The outer portion of the first connecting column (21) is fixedly sleeved with a connecting plate (22). A plurality of stirring blades (23) are fixed to the outside of the connecting plate (22), and a plurality of groups of brush heads (25) are fixed to the outside of the plurality of stirring blades (23), and the plurality of groups of brush heads (25) pass through two scraping rods (26) and fit with the inner wall of the purification shell (11). A synchronization component (3) is provided in the channel frame (28) for driving the first connecting column (21) and the two scraping rods (26) to rotate synchronously. An adjustment component (4) is provided in the synchronization component (3) for adjusting the distance between the scraping rods (26) and the plurality of groups of brush heads (25) and the purification shell (11).

2. The blast furnace flue gas purification device according to claim 1, characterized in that: A swing block (24) is fixed between the brush head (25) and the stirring blade (23), and two soft scraping strips (27) are symmetrically fixed to the outside of the scraping rod (26). The outside of the swing block (24) is matched with the arc between the scraping rod (26) and the soft scraping strip (27).

3. The blast furnace flue gas purification device according to claim 1, characterized in that: The synchronization assembly (3) includes a first gear (31) rotatably connected to the top wall of the channel frame (28), a third gear (34) fixed to the top of the first connecting column (21), and a second gear (32) rotatably connected to the channel frame (28) and meshing with the first gear (31), and the third gear (34) is located in the channel frame (28) and meshing with the second gear (32). A servo motor (35) is fixed to the outside of the purification shell (11), and one end of the servo motor (35) extends into the channel frame (28) and is fixed to one end of the second gear (32). A second connecting column (33) is fixed to one end of the first gear (31), and one end of the second connecting column (33) passes through the third gear (34) and is rotatably sleeved on the outside of the first connecting column (21).

4. The blast furnace flue gas purification device according to claim 3, characterized in that: The adjusting assembly (4) comprises a fixed disk (42) fixedly sleeved on the outside of the second connecting column (33), a fault column (41) fixedly connected to the top of the scraper rod (26), and an outer screw sleeve (44) fixed to one end of the fixed disk (42), and one end of the outer screw sleeve (44) is provided with a through groove for inserting the fault column (41), and the outer screw sleeve (44) is provided with a fixing assembly for locking the fault column (41) in the through groove.

5. The blast furnace flue gas purification device according to claim 4, characterized in that: The fixing assembly comprises an inner screw sleeve (43) sleeved on the fault column (41) and a plurality of elastic gaskets (45) fixed to one end of an outer screw sleeve (44), wherein the inner screw sleeve (43) is screwed onto the outside of the outer screw sleeve (44), and a gasket (46) matching with the elastic gasket (45) is fixed to one end of the inner screw sleeve (43), and the gasket (46) is sleeved onto the outside of the fault column (41).

6. The ironmaking blast furnace flue gas purification device according to claim 5, characterized in that: An inclined plate is fixed to the outside of the elastic gasket (45), and a limiting groove (47) is provided in the gasket ring (46) to match the inclined plate.

7. The blast furnace flue gas purification device according to claim 1, characterized in that: The channel frame (28) and the purification shell (11) are combined to form a W-shaped structure.

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