A top of blast furnace noise elimination and dust removal device

Abstract

The application discloses a blast furnace top sound elimination and dust removal equipment and relates to the technical field of flue gas dust removal. Since the temperature of flue gas led out from a blast furnace is high, when the flue gas is directly subjected to dust removal treatment without cooling, the heat of the flue gas is transferred to a dust removal filter element in the filtering process, the filter element is damaged, and the dust removal effect on the flue gas is affected. The blast furnace top sound elimination and dust removal equipment utilizes the contact between flue gas and an inner cavity block and an outer cover bin when the high-temperature flue gas flows, so that the heat of the flue gas is transferred to cooling water through the inner cavity block and the outer cover bin when the flue gas contacts the inner cavity block and the outer cover bin, the temperature of the flue gas is lowered, the filter element is prevented from being damaged due to high-temperature flue gas during dust removal, the arc-shaped protrusions of the inner cavity block are matched with the recesses of the outer cover bin, the tortuosity of the flue gas flow is increased, the area of the contact between the outer cover bin and the inner cavity block and the flue gas is increased, and the cooling effect is improved.

Description

Technical Field

[0001] This invention relates to the field of flue gas dust removal technology, specifically to a blast furnace top noise reduction and dust removal device. Background Technology

[0002] Blast furnace top noise reduction and dust removal refers to the comprehensive engineering measures taken during the blast furnace smelting process to control and treat the high-intensity noise and dust-laden gas generated in the furnace top area, especially during operations such as pressure equalization and charging, using specialized equipment and technical means. This aims to reduce noise pollution and dust emissions, thereby meeting environmental protection standards, ensuring production safety, and improving the working environment. Blast furnace top noise reduction and dust removal equipment refers to a series of devices used at the blast furnace top to reduce noise generated during pressure equalization and discharge and to remove dust particles from the exhaust gas, in order to meet environmental protection and safe production requirements.

[0003] When removing dust from blast furnace flue gas, the high temperature of the flue gas leading out of the blast furnace can cause the heat to be transferred to the dust removal filter during the filtration process without cooling, resulting in damage to the filter and affecting the dust removal effect. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A blast furnace top noise reduction and dust removal device includes:

[0006] A guide pipe is used to connect to the exhaust pipe of the blast furnace top, and a cooling chamber is fixedly installed on the top of the guide pipe, and a connecting pipe is fixedly installed on the top of the cooling chamber.

[0007] The dust removal mechanism is installed at the end of the connecting pipe away from the cooling chamber;

[0008] An exhaust mechanism is installed at the end of the dust removal mechanism away from the connecting pipe;

[0009] An inlet pipe and an outlet pipe are fixedly installed on the outer side of the cooling chamber. These pipes are located on both sides of the cooling chamber and extend through it into its interior. An outer cover is fixedly installed on the inner wall of the cooling chamber. The inlet and outlet pipes are connected to the cavity of the outer cover. The center of the inner wall of the outer cover is recessed inwards, and a connecting pipe is fixedly installed on its inner wall. These connecting pipes are evenly installed along the center of the outer cover, and an inner cavity block is fixedly installed at the end of the connecting pipe furthest from the outer cover. Through the cavity between the inner cavity block and the outer cover, when high-temperature flue gas flows through, the flue gas contacts the inner cavity block. The inner cavity block and the outer casing allow the heat of the flue gas to be transferred to the cooling water through the inner cavity block and the outer casing when they come into contact, thereby reducing the temperature of the flue gas and preventing damage to the filter elements caused by high-temperature flue gas during dust removal. At the same time, the arc-shaped protrusion of the inner cavity block and the concave shape of the outer casing cooperate to increase the tortuosity of the flue gas flow process and increase the contact area between the outer casing and the inner cavity block and the flue gas, thereby improving the cooling effect. The inner cavity block is located at the center of the cooling chamber, and the center of the outer side of the inner cavity block has an arc-shaped protrusion. The arc-shaped protrusion of the inner cavity block corresponds to the concave shape of the outer casing, and the cavity of the inner cavity block and the cavity of the outer casing are connected by a connecting pipe.

[0010] Preferably, the dust removal mechanism includes a fixed pipe, one end of which is fixedly connected to the end of the connecting pipe away from the cooling chamber. An inner pad is fixedly installed on the inner wall of the fixed pipe, and there is a gap between the fixed pipe and the inner pad. A dust collection hood is fixedly installed on the outer side of the fixed pipe away from the connecting pipe. The dust collection hood penetrates the fixed pipe and extends into the interior of the inner pad. A through groove plate is fixedly installed on the inner wall of the inner pad near the connecting pipe. A fixing ring is fixedly installed on the inner wall of the inner pad away from the connecting pipe. A conical pad ring is fixedly installed on the side of the fixing ring near the through groove plate. Through the cooperation of the conical pad ring and the conical cylinder, when the filter screen blocks large dust particles, the large dust particles are driven by the flow of flue gas. The large dust particles filtered by the filter screen are guided into the dust collection hood by the change in the outer diameter of the conical cylinder and the cooperation of the conical pad ring, cleaning the surface of the filter screen and preventing large dust particles from continuously adhering to the surface of the filter screen, which would cause the filter screen to become clogged during continuous filtration and affect the filtration effect of the filter screen.

[0011] Preferably, the outer side of the conical pad ring is tightly fitted to the inner wall of the inner pad tube, and the conical pad ring corresponds to the dust collection hood. A conical cylinder is installed between the fixing ring and the through groove plate. The filtration process of the filter screen and the filter cover is separated by the cooperation of the conical cylinder and the grid groove, so that the filter screen and the filter cover cooperate to achieve dual filtration of dust particles in the flue gas. Compared with single-stage filtration, when the filter screen is damaged, the filter cover can still ensure the dust removal effect of the flue gas. The outer end of the conical cylinder near the through groove plate is fixedly connected to the inner wall of the through groove plate, and the outer end of the conical cylinder near the fixing ring is fixedly connected to the inner wall of the fixing ring. The outer diameter of the conical cylinder gradually decreases as it moves away from the through groove plate, and the outer side of the conical cylinder is uniformly provided with grooves. A filter screen is fixedly installed on the outer side of the conical cylinder. A grid cover is fixedly installed on the side of the fixing ring away from the through groove plate, and a grid groove is uniformly provided on the outer side of the grid cover. A filter cover is fixedly installed on the inner wall of the grid cover.

[0012] Preferably, the exhaust mechanism includes an air guide pipe, one end of which is fixedly connected to a dust removal mechanism, and the other end of which is fixedly installed with an air chamber. Circular grooves are formed on both sides of the air chamber, and exhaust slots are uniformly formed on the top of the air chamber. Exhaust pipes are fixedly installed at the exhaust slots of the air chamber. An end cylinder is slidably installed at the top of the exhaust pipe. A rubber gasket is fixedly installed between the end cylinder and the exhaust pipe. Through the sliding fit between the end cylinder and the exhaust pipe, when the exhaust speed is high, the gas pushes the end cylinder, causing the end cylinder to compress the rubber gasket ring, causing the end cylinder to move upward, absorbing the energy of the flue gas during exhaust, assisting the inner diaphragm ring in blocking the flue gas, reducing the speed of the flue gas during exhaust, and improving the silencing effect. An end cover is fixedly installed at the top of the end cylinder, and the inner diameter of the end cover gradually decreases from top to bottom. An inner diaphragm ring is fixedly installed on the inner wall of the exhaust pipe. The inner diaphragm rings are uniformly installed inside the exhaust pipe, and the end of the inner diaphragm ring away from the exhaust pipe is inclined downwards.

[0013] Preferably, a side cover is fixedly installed at the circular groove of the air chamber. A slide cylinder is fixedly installed at the center of the side cover away from the air chamber. Holes are evenly opened at the outer end of the slide cylinder away from the side cover. Air holes are evenly opened at the edge of the side cover cylinder away from the air chamber. A side slide plate is slidably installed on the inner wall of the side cover. The side slide plate cooperates with the spring. When the gas pressure in the air chamber increases, the pressure is compressed by the side slide plate, connecting rod and slip ring, causing the spring to deform under pressure. At the same time, the side slide plate slides on the inner wall of the side cover, increasing the volume. The deformation of the spring buffers the pressure. When the gas pressure increases, there is no buffering, and the speed of the exhaust pipe is faster, affecting the noise reduction effect. A connecting rod is fixedly installed on the outer side of the side slide plate. A slip ring is fixedly installed on the outer side of the connecting rod. The outer side of the slip ring slides and adapts to the inner wall of the slide cylinder. A spring is fixedly installed between the slip ring and the slide cylinder.

[0014] This invention provides a blast furnace top noise reduction and dust removal device. It has the following beneficial effects:

[0015] I. The blast furnace top silencing and dust removal equipment utilizes the cavity between the inner cavity block and the outer cover chamber. When high-temperature flue gas flows through, the heat of the flue gas is transferred to the cooling water through the contact between the inner cavity block and the outer cover chamber, reducing the temperature of the flue gas and preventing damage to the filter elements caused by high-temperature flue gas during dust removal. At the same time, the arc-shaped protrusion of the inner cavity block and the concave shape of the outer cover chamber increase the tortuosity of the flue gas flow process and increase the contact area between the outer cover chamber and the inner cavity block, thereby improving the cooling effect.

[0016] Second, the blast furnace top noise reduction and dust removal equipment, through the cooperation of a cone-shaped ring and a cone-shaped cylinder, utilizes the movement of flue gas to carry large dust particles while the filter screen blocks them. This allows the large dust particles filtered out by the filter screen to be guided into the dust collection hood by the change in the outer diameter of the cone-shaped cylinder and the cooperation of the cone-shaped ring. This cleans the surface of the filter screen and prevents large dust particles from continuously adhering to the surface of the filter screen, which would cause the filter screen to become clogged during continuous filtration and affect the filtration effect.

[0017] Third, the blast furnace top noise reduction and dust removal equipment uses a conical cylinder and a grid groove to separate the filtration process of the filter screen and the filter cover, so that the filter screen and the filter cover work together to achieve dual filtration of dust particles in the flue gas. Compared with single-stage filtration, when the filter screen is damaged, the filter cover can still ensure the dust removal effect of the flue gas.

[0018] IV. The blast furnace top silencing and dust removal equipment, through the sliding fit between the end cylinder and the exhaust pipe, when the exhaust speed is relatively fast, the gas pushes the end cylinder, causing the end cylinder to compress the rubber pad ring and change, causing the end cylinder to move upward, absorbing the energy when the flue gas is discharged, assisting the inner diaphragm ring to block the flue gas, reducing the speed of the flue gas discharge, and improving the silencing effect.

[0019] 5. The silencing and dust removal equipment at the top of the blast furnace works by using a side sliding plate in conjunction with a spring. When the gas pressure inside the gas chamber increases, the pressure is transmitted through the side sliding plate, connecting rod, and slip ring, compressing the spring and causing it to deform under pressure. At the same time, the side sliding plate slides on the inner wall of the side cover cylinder, increasing the volume. This, combined with the deformation of the spring, buffers the pressure. However, when the gas pressure increases further, this buffering is no longer possible, and the speed at which the gas is discharged through the exhaust pipe increases, affecting the silencing effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a blast furnace top noise reduction and dust removal device according to the present invention;

[0021] Figure 2 This is a structural side view of a blast furnace top noise reduction and dust removal device according to the present invention;

[0022] Figure 3 This is a partial structural schematic diagram of a blast furnace top noise reduction and dust removal device according to the present invention;

[0023] Figure 4 This is a partial structural cross-sectional view of a blast furnace top noise reduction and dust removal device according to the present invention;

[0024] Figure 5 This is a partial sectional side view of a blast furnace top noise reduction and dust removal device according to the present invention;

[0025] Figure 6 This is a schematic diagram of the dust removal mechanism of the present invention;

[0026] Figure 7 This is a sectional view of the dust removal mechanism of the present invention;

[0027] Figure 8 This is a sectional side view of the dust removal mechanism of the present invention;

[0028] Figure 9 This is a schematic diagram of the exhaust mechanism of the present invention;

[0029] Figure 10 This is a cross-sectional view of the exhaust mechanism of the present invention.

[0030] In the diagram: 1. Guide pipe; 2. Dust removal mechanism; 3. Exhaust mechanism; 4. Cooling chamber; 5. Connecting pipe; 6. Water inlet pipe; 7. Water outlet pipe; 8. Outer cover chamber; 9. Connecting pipe; 10. Inner cavity block; 201. Fixed pipe; 202. Dust collection hood; 203. Through groove plate; 204. Inner pad pipe; 205. Filter screen; 206. Conical pad ring; 207. Fixed ring; 208. Grille cover; 209. Filter cover; 210. Conical cylinder; 301. Air guide pipe; 302. Side cover cylinder; 303. Sliding cylinder; 304. Air chamber; 305. Exhaust pipe; 306. End cylinder; 307. End cover; 308. Rubber pad ring; 309. Inner partition ring; 310. Side sliding plate; 311. Sliding ring; 312. Connecting rod; 313. Spring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] First embodiment, such as Figures 1 to 5 As shown, the present invention provides a technical solution:

[0033] A blast furnace top noise reduction and dust removal device includes:

[0034] The guide pipe 1 is used to connect the exhaust pipe of the blast furnace top, and a cooling chamber 4 is fixedly installed on the top of the guide pipe 1, and a connecting pipe 5 is fixedly installed on the top of the cooling chamber 4.

[0035] Dust removal mechanism 2 is installed at the end of the connecting pipe 5 away from the cooling chamber 4;

[0036] Exhaust mechanism 3 is installed at the end of dust removal mechanism 2 away from connecting pipe 5;

[0037] An inlet pipe 6 and an outlet pipe 7 are fixedly installed on the outer side of the cooling chamber 4. The inlet pipe 6 and outlet pipe 7 are located on both sides of the cooling chamber 4, penetrating the cooling chamber 4 and extending into its interior. An outer cover chamber 8 is fixedly installed on the inner wall of the cooling chamber 4. After being connected to the blast furnace flue gas discharge pipe through the guide pipe 1, high-temperature flue gas is introduced into the cooling chamber 4 through the guide pipe 1. In use, the water pipe is connected to the inlet pipe 6 and the outlet pipe 7, allowing cooling water to be introduced through the water pipe from the inlet pipe 6 into the outer cover chamber 8. A connecting pipe 9 connects the inner cavity block 10 and the outer cover chamber 8, allowing cooling water to enter the outer cover chamber 8 and then be introduced into the inner cavity block 10 through the connecting pipe 9, filling the inner cavity block 10 and the interior of the outer cover chamber 8 with cooling water. The inlet pipe 6 and the outlet pipe 7 are connected to the cavity of the outer cover chamber 8. The center of the inner wall of the outer cover chamber 8 is recessed inward, and a [missing information - likely a device or structure] is fixedly installed on the inner wall of the outer cover chamber 8. The connecting pipe 9 is evenly installed along the center of the outer cover chamber 8, and an inner cavity block 10 is fixedly installed at the end of the connecting pipe 9 away from the outer cover chamber 8. The inner cavity block 10 is located at the center of the cooling chamber 4. During use, cooling water is discharged from the outlet pipe 7. When the high-temperature flue gas comes into contact with the inner cavity block 10 and the outer cover chamber 8, the heat is transferred to the cooling water through the inner cavity block 10 and the outer cover chamber 8, reducing the heat of the flue gas introduced into the dust removal mechanism 2. At the same time, during the flue gas flow, the arc-shaped protrusion of the inner cavity block 10 and the concave part of the outer cover chamber 8 cooperate to increase the tortuosity of the flue gas flow path and increase the area of ​​the flue gas in contact with the inner cavity block 10 and the outer cover chamber 8. The arc-shaped protrusion at the center of the outer side of the inner cavity block 10 corresponds to the concave part of the outer cover chamber 8, and the cavity of the inner cavity block 10 and the cavity of the outer cover chamber 8 are connected through the connecting pipe 9.

[0038] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 6 to 8As shown, the dust removal mechanism 2 includes a fixed pipe 201. One end of the fixed pipe 201 is fixedly connected to the end of the connecting pipe 5 away from the cooling chamber 4. An inner gasket 204 is fixedly installed on the inner wall of the fixed pipe 201, and there is a gap between the fixed pipe 201 and the inner gasket 204. A dust collection hood 202 is fixedly installed on the outer end of the fixed pipe 201 away from the connecting pipe 5. In the dust removal mechanism 2, the cooled flue gas is introduced into the fixed pipe 201 through the connecting pipe 5. The flue gas first enters the inner gasket 204, then passes through the through-groove plate 203, and reaches the outer side of the conical cylinder 210, immediately following... As the flue gas passes through the filter screen 205, large dust particles in the flue gas are blocked by the filter screen 205, while small dust particles are carried by the flue gas through the filter screen 205 and the groove of the conical cylinder 210 into the interior of the conical cylinder 210. The dust collection hood 202 passes through the fixed pipe 201 and extends into the interior of the inner pad pipe 204. A through groove plate 203 is fixedly installed on the inner wall of the inner pad pipe 204 near the connecting pipe 5, and a fixed ring 207 is fixedly installed on the inner wall of the inner pad pipe 204 away from the connecting pipe 5. A conical pad ring 206 is fixedly installed on the side of the fixed ring 207 near the through groove plate 203.

[0039] The outer side of the cone ring 206 is tightly fitted to the inner wall of the inner pad tube 204, and the cone ring 206 corresponds to the dust collection hood 202. A cone cylinder 210 is installed between the fixing ring 207 and the through groove plate 203. The outer end of the cone cylinder 210 near the through groove plate 203 is fixedly connected to the inner wall of the through groove plate 203, and the outer end of the cone cylinder 210 near the fixing ring 207 is fixedly connected to the inner wall of the fixing ring 207. The outer diameter of the cone cylinder 210 gradually decreases as it moves away from the through groove plate 203. Large dust particles blocked by the filter screen 205 are carried by the flowing flue gas. The change in the outer diameter of the cone cylinder 210, in conjunction with the cone ring 206, allows the large dust particles to be carried by the flue gas into the dust collection hood. Small dust particles collected in the dust collection hood 202 and entering the conical cylinder 210 move towards the grille hood 208 along with the flue gas. The grille hood 208 cooperates with the filter hood 209, so that the small dust particles are blocked by the filter hood 209 and collected in the grille hood 208. After the dust is removed, the flue gas passes through the grille hood 208 and is introduced into the exhaust mechanism 3 through the fixed pipe 201. The outer side of the conical cylinder 210 is evenly provided with grooves, and a filter screen 205 is fixedly installed on the outer side of the conical cylinder 210. The grille hood 208 is fixedly installed on the side of the fixed ring 207 away from the through groove plate 203. The outer side of the grille hood 208 is evenly provided with grille grooves, and a filter hood 209 is fixedly installed on the inner wall of the grille hood 208.

[0040] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 9 to 10As shown, the exhaust mechanism 3 includes an air guide pipe 301. One end of the air guide pipe 301 is fixedly connected to the dust removal mechanism 2, and the other end of the air guide pipe 301 is fixedly installed with an air chamber 304. Circular grooves are provided on both sides of the air chamber 304, and exhaust grooves are evenly provided on the top of the air chamber 304. Exhaust pipes 305 are fixedly installed at the exhaust grooves of the air chamber 304, and end cylinders 306 are slidably installed at the top of the exhaust pipes 305. In the exhaust mechanism 3, the flue gas after dust removal is introduced into the air chamber 304 through the air guide pipe 301. The flue gas entering the air chamber 304 is discharged through the exhaust pipes 305. During the discharge process through the exhaust pipes 305, the flue gas passes through the inner partition sequentially. The inner diaphragm ring 309 is inclined so that when the gas passes through, some of the gas is blocked by the inner diaphragm ring 309. At the same time, under the guidance of the inner diaphragm ring 309, it counteracts the flue gas flowing out afterward, reducing the speed of flue gas discharge and reducing the noise when the flue gas is discharged. A rubber gasket ring 308 is fixedly installed between the end cylinder 306 and the exhaust pipe 305. An end cover 307 is fixedly installed on the top of the end cylinder 306. The inner diameter of the end cover 307 gradually decreases from top to bottom. An inner diaphragm ring 309 is fixedly installed on the inner wall of the exhaust pipe 305. The inner diaphragm ring 309 is evenly installed inside the exhaust pipe 305, and the end of the inner diaphragm ring 309 away from the exhaust pipe 305 is inclined downward.

[0041] Side hoods 302 are fixedly installed at the circular grooves of the air chamber 304. A sliding cylinder 303 is fixedly installed at the center of the side hood 302 away from the air chamber 304. Holes are evenly distributed on the outer side of the sliding cylinder 303 away from the side hood 302. Air holes are evenly distributed on the edge of the side hood 302 away from the air chamber 304. A side sliding plate 310 is slidably installed on the inner wall of the side hood 302. During the exhaust process, the gas pressure inside the air chamber 304 is transmitted to the spring 313 through the side sliding plate 310, the connecting rod 312, and the slip ring 311. When the pressure suddenly increases, the pressure compresses the spring 313 through the side sliding plate 310, connecting rod 312 and slip ring 311, causing the spring 313 to deform under pressure. At the same time, the side sliding plate 310 slides on the inner wall of the side cover cylinder 302, increasing the volume. In conjunction with the deformation of the spring 313, pressure is buffered. The connecting rod 312 is fixedly installed on the outer side of the side sliding plate 310, and the slip ring 311 is fixedly installed on the outer side of the connecting rod 312. The outer side of the slip ring 311 slides and adapts to the inner wall of the slide cylinder 303, and the spring 313 is fixedly installed between the slip ring 311 and the slide cylinder 303.

[0042] In use, the connecting pipe 1 is connected to the exhaust pipe at the top of the blast furnace, so that the flue gas from the blast furnace enters the connecting pipe 1 through the exhaust pipe and then enters the cooling chamber 4 through the connecting pipe 1. After the high-temperature flue gas is cooled in the cooling chamber 4, it is introduced into the dust removal mechanism 2 through the connecting pipe 5. The dust removal mechanism 2 filters out the dust in the flue gas, and then the flue gas after the dust is filtered out is introduced into the exhaust mechanism 3, and the exhaust mechanism 3 silences and discharges the flue gas.

[0043] After being connected to the blast furnace flue gas discharge pipe through the guide pipe 1, the high-temperature flue gas is introduced into the cooling chamber 4 through the guide pipe 1. During use, the water pipe is connected to the inlet pipe 6 and the outlet pipe 7, so that the cooling water is introduced through the water pipe from the inlet pipe 6 into the outer cover chamber 8. The inner cavity block 10 and the outer cover chamber 8 are connected through the connecting pipe 9, so that the cooling water enters the outer cover chamber 8 and is introduced into the inner cavity block 10 through the connecting pipe 9, so that the interior of the inner cavity block 10 and the outer cover chamber 8 is filled with cooling water. At the same time, during use, the cooling water is discharged from the outlet pipe 7. When the high-temperature flue gas comes into contact with the inner cavity block 10 and the outer cover chamber 8, the heat is transferred to the cooling water through the inner cavity block 10 and the outer cover chamber 8, reducing the heat of the flue gas introduced into the dust removal mechanism 2. At the same time, during the flue gas flow, the arc-shaped protrusion of the inner cavity block 10 and the concave shape of the outer cover chamber 8 cooperate to increase the tortuosity of the flue gas flow path and increase the area of ​​the flue gas in contact with the inner cavity block 10 and the outer cover chamber 8.

[0044] In the dust removal mechanism 2, the cooled flue gas is introduced into the fixed pipe 201 through the connecting pipe 5. The flue gas first enters the inner pad pipe 204, then passes through the through groove plate 203, and reaches the outside of the conical cylinder 210. Next, the flue gas passes through the filter screen 205, where large dust particles in the flue gas are blocked by the filter screen 205. Small dust particles enter the interior of the conical cylinder 210 along with the flue gas through the filter screen 205 and the grooves of the conical cylinder 210. At the same time, the large dust particles blocked by the filter screen 205 are carried by the flowing flue gas. Under the influence of the movement, the outer diameter of the conical cylinder 210 changes and cooperates with the conical gasket ring 206, so that large dust particles are drawn into the dust collection hood 202 and collected under the action of the flue gas. Small dust particles entering the conical cylinder 210 move with the flue gas toward the grille hood 208. The grille hood 208 cooperates with the filter hood 209, so that the small dust particles are blocked by the filter hood 209 and collected in the grille hood 208. After the dust is removed, the flue gas passes through the grille hood 208 and is introduced into the exhaust mechanism 3 through the fixed pipe 201.

[0045] In the exhaust mechanism 3, the flue gas after dust removal is introduced into the gas chamber 304 through the air guide pipe 301. The flue gas then enters the gas chamber 304 and is discharged through the exhaust pipe 305. During its discharge through the exhaust pipe 305, the flue gas passes sequentially through the inner diaphragm ring 309. The inclination of the inner diaphragm ring 309 causes some of the gas to be blocked as it passes through. Simultaneously, guided by the inner diaphragm ring 309, the gas counteracts the flow of subsequent flue gas, reducing the velocity of the discharged flue gas and decreasing its emission rate. During the exhaust process, the gas pressure inside the air chamber 304 is transmitted to the spring 313 through the side sliding plate 310, connecting rod 312 and slip ring 311. When the gas pressure inside the air chamber 304 suddenly increases, the pressure compresses the spring 313 through the side sliding plate 310, connecting rod 312 and slip ring 311, causing the spring 313 to deform under pressure. At the same time, the side sliding plate 310 slides on the inner wall of the side cover cylinder 302 to increase the volume. This, combined with the deformation of the spring 313, provides pressure buffering.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blast furnace top noise reduction and dust removal device, characterized in that, include: A connecting pipe (1) is used to connect the exhaust pipe of the blast furnace top, and a cooling chamber (4) is fixedly installed on the top of the connecting pipe (1), and a connecting pipe (5) is fixedly installed on the top of the cooling chamber (4). A dust removal mechanism (2) is installed at the end of the connecting pipe (5) away from the cooling chamber (4); An exhaust mechanism (3) is installed at the end of the dust removal mechanism (2) away from the connecting pipe (5); An inlet pipe (6) and an outlet pipe (7) are fixedly installed on the outer side of the cooling chamber (4). The inlet pipe (6) and the outlet pipe (7) are located on both sides of the cooling chamber (4), and the inlet pipe (6) and the outlet pipe (7) penetrate the cooling chamber (4) and extend into its interior. An outer cover chamber (8) is fixedly installed on the inner wall of the cooling chamber (4). The inlet pipe (6) and the outlet pipe (7) are connected to the cavity of the outer cover chamber (8). The center of the inner wall of the outer cover chamber (8) is recessed inward, and the inner wall of the outer cover chamber (8) is fixedly installed... A connecting pipe (9) is installed, which is evenly installed along the center of the outer cover (8). An inner cavity block (10) is fixedly installed at the end of the connecting pipe (9) away from the outer cover (8). The inner cavity block (10) is located at the center of the cooling chamber (4). The center of the outer side of the inner cavity block (10) is arc-shaped and the arc-shaped protrusion of the inner cavity block (10) corresponds to the concavity of the outer cover (8). The cavity of the inner cavity block (10) is connected to the cavity of the outer cover (8) through the connecting pipe (9).

2. The blast furnace top noise reduction and dust removal device according to claim 1, characterized in that: The dust removal mechanism (2) includes a fixed pipe (201), one end of which is fixedly connected to the end of the connecting pipe (5) away from the cooling chamber (4). An inner pad pipe (204) is fixedly installed on the inner wall of the fixed pipe (201), and there is a gap between the fixed pipe (201) and the inner pad pipe (204).

3. The blast furnace top noise reduction and dust removal device according to claim 2, characterized in that: A dust collection hood (202) is fixedly installed on the outer side of the fixed tube (201) away from the connecting tube (5). The dust collection hood (202) penetrates the fixed tube (201) and extends into the interior of the inner pad tube (204). A through groove plate (203) is fixedly installed on the inner wall of the inner pad tube (204) near the connecting tube (5). A fixing ring (207) is fixedly installed on the inner wall of the inner pad tube (204) away from the connecting tube (5). A conical pad ring (206) is fixedly installed on the side of the fixing ring (207) near the through groove plate (203).

4. The blast furnace top noise reduction and dust removal device according to claim 3, characterized in that: The outer side of the conical pad ring (206) is tightly fitted to the inner wall of the inner pad tube (204), and the conical pad ring (206) corresponds to the dust collection hood (202). A conical cylinder (210) is installed between the fixing ring (207) and the through groove plate (203). The outer end of the conical cylinder (210) near the through groove plate (203) is fixedly connected to the inner wall of the through groove plate (203), and the outer end of the conical cylinder (210) near the fixing ring (207) is fixedly connected to the inner wall of the fixing ring (207).

5. The blast furnace top noise reduction and dust removal device according to claim 4, characterized in that: The outer diameter of the conical cylinder (210) gradually decreases as it moves away from the through-groove plate (203), and grooves are uniformly opened on the outer side of the conical cylinder (210). A filter screen (205) is fixedly installed on the outer side of the conical cylinder (210).

6. The blast furnace top noise reduction and dust removal device according to claim 5, characterized in that: A grid cover (208) is fixedly installed on the side of the fixing ring (207) away from the through groove plate (203), and a grid groove is evenly opened on the outer side of the grid cover (208). A filter cover (209) is fixedly installed on the inner wall of the grid cover (208).

7. The blast furnace top noise reduction and dust removal device according to claim 1, characterized in that: The exhaust mechanism (3) includes an air guide pipe (301), one end of which is fixedly connected to the dust removal mechanism (2), and the other end of which is fixedly installed with an air chamber (304). Circular grooves are provided on both sides of the air chamber (304), and exhaust grooves are uniformly provided on the top of the air chamber (304).

8. The blast furnace top noise reduction and dust removal device according to claim 7, characterized in that: An exhaust pipe (305) is fixedly installed at the exhaust slot of the air chamber (304). An end cylinder (306) is slidably installed at the top of the exhaust pipe (305). A rubber gasket (308) is fixedly installed between the end cylinder (306) and the exhaust pipe (305). An end cover (307) is fixedly installed at the top of the end cylinder (306). The inner diameter of the end cover (307) gradually decreases from top to bottom. An inner partition ring (309) is fixedly installed on the inner wall of the exhaust pipe (305). The inner partition ring (309) is evenly installed inside the exhaust pipe (305), and the end of the inner partition ring (309) away from the exhaust pipe (305) is inclined downward.

9. The blast furnace top noise reduction and dust removal device according to claim 7, characterized in that: A side cover (302) is fixedly installed at the circular groove of the air chamber (304). A slide cylinder (303) is fixedly installed at the center position of the side cover (302) away from the air chamber (304). Holes are evenly opened at the outer end of the slide cylinder (303) away from the side cover (302). Air holes are evenly opened at the edge of the side cover (302) away from the air chamber (304).

10. The blast furnace top noise reduction and dust removal device according to claim 9, characterized in that: A side slide plate (310) is slidably installed on the inner wall of the side cover cylinder (302). A connecting rod (312) is fixedly installed on the outer side of the side slide plate (310). A slip ring (311) is fixedly installed on the outer side of the connecting rod (312). The outer side of the slip ring (311) is slidably adapted to the inner wall of the slide cylinder (303). A spring (313) is fixedly installed between the slip ring (311) and the slide cylinder (303).

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