A dust removal device for recovering waste heat from flue gas of steelmaking converter

Abstract

The present application provides a dust removal device for recovering waste heat from flue gas of a steelmaking converter, comprising a housing and a dust removal mechanism, wherein the dust removal mechanism is rotatably mounted in the middle of the inner cavity of the housing, the bottom of the left end of the housing is fixedly connected to an air intake duct, and the right end of the housing is fixedly connected to a pressure relief duct. In order to solve the problem that the smoke dust in the high-temperature flue gas cannot be removed without wasting resources in the prior art, the present application cooperates with the dust removal mechanism through the baffle plate, when the hot gas with smoke dust enters the interior of the housing and impacts the surface of the baffle plate, 60% of the dust in the smoke dust can fall down through the baffle plate deflection effect, and the airflow is deflected back to the surface of the impeller plate and contacts the adsorption plate through the baffle plate deflection effect of the top baffle, and the dust in the smoke dust is further adsorbed through the surface of the adsorption plate, so that the dust in the hot air flow can be further removed, reducing the smoke dust in the waste heat, and realizing the removal and recovery of the dust in the smoke gas.

Description

Technical Field

[0001] The invention relates to the field of converter flue gas dust removal, and in particular to a dust removal device for recovering waste heat from steelmaking converter flue gas. Background Art

[0002] Steelmaking converters produce high-temperature flue gas over 1600℃. Currently, a vaporization flue is generally used to reduce the flue gas temperature to about 800℃, and then water (mist) is sprayed to cool and remove dust. In other words, the heat below 800℃ is wasted. Several experiments have been conducted in China to recover the waste heat of 800℃ flue gas to about 200℃, but none of them were successful. The main reason is that the boiler is seriously ash-accumulated and the dust in the flue gas cannot be recovered.

[0003] For example, the Chinese invention patent (application number: CN201710079525.2) discloses a "semi-dry dust removal device and process for steelmaking converter flue gas with waste heat recovery". Its specification discloses: The biggest commonality of the above three dust removal processes is that they consume water resources and minimize the three major resource efficiencies of converter flue gas: the thermal energy of converter flue gas cannot be recovered; the converter CO gas is converted into gas containing water and water vapor; the converter dust loses the original oxide properties of iron oxide, calcium oxide, and magnesium oxide, and becomes substances such as water-containing iron oxide and calcium hydroxide, magnesium hydroxide, and cannot be directly returned to the converter for utilization. Therefore, the dust removal process of the current dust removal process for converter flue gas is a process of wasting precious converter flue gas resources and consuming water resources. It is impossible to remove dust from high-temperature flue gas without wasting resources. The above patents can prove the defects of the prior art.

[0004] Therefore, we have made improvements to this problem and proposed a dust removal device for recovering waste heat from flue gas in steelmaking converters. Summary of the invention

[0005] The purpose of the present invention is to address the current dust removal process of converter flue gas, which is a process of wasting precious converter flue gas resources and consuming water resources, and it is impossible to remove dust in high-temperature flue gas without wasting resources.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following dust removal device for recovering waste heat from flue gas of a steelmaking converter to improve the above-mentioned problem.

[0007] The specific application is as follows:

[0008] A dust removal device for recovering waste heat from flue gas of a steelmaking converter comprises a box body and a dust removal mechanism, wherein the dust removal mechanism is rotatably mounted in the middle of an inner cavity of the box body, an air intake pipe is fixedly connected to the bottom of the left end of the box body, a pressure relief pipe is fixedly connected to the right end of the box body, a pair of baffles are arranged on one side of the pressure relief pipe in the middle of the inner cavity of the box body, a bottom box is fixedly connected to the bottom of the box body, a storage box is slidably connected to the inside of the bottom box, and a pair of dust collecting baffles are symmetrically fixedly mounted on the top of the bottom box;

[0009] The dust removal mechanism includes a filter drum, and four telescopic grooves are provided at equal angles on the side of the circumference of the filter drum, and a telescopic plate is slidably clamped inside the telescopic groove, and the inner side of the telescopic plate is magnetic, and the outer side of the telescopic plate is fixedly connected to an impeller plate, and a scraper is sleeved inside the impeller plate, and the outer end of the scraper is movably hinged to the outermost side of the impeller plate through a torsion spring, and an array of adsorption plates is fixedly installed inside the impeller plate, and the surface array of the scraper is provided with a separation groove, and the adsorption plate is clamped inside the separation groove, and a layer of smoke is attached to the surface of the adsorption plate by physical fumigation;

[0010] The middle part of the dust removal mechanism is sleeved with a driving mechanism, and the driving mechanism includes a guide barrel, the guide barrel is fixedly installed in the middle part of the box body, and the filter rotary barrel is rotatably sleeved outside the guide barrel.

[0011] As a preferred technical solution of the present application, a collision mechanism is provided at the top of the inner cavity of the bottom box, and the collision mechanism includes a rotating shaft, which is movably hinged to the top of the inner cavity of the bottom box through a torsion spring, and a gear lever is fixedly installed at the inner and outer ends of the left side of the rotating shaft, and a counterweight block is fixedly installed on the inner side of the top of the gear lever.

[0012] As a preferred technical solution of the present application, hollow grooves are symmetrically opened at both ends of the outer side of the impeller plate, and the counterweight block and the hollow groove are located on the same vertical plane. When the hollow groove rotates to the bottom, it docks with the counterweight block, and the two counterweight blocks collide with the two ends of the scraper respectively.

[0013] As a preferred technical solution of the present application, a dust removal plate is fixedly installed on the right array of the rotating shaft, the width of the dust removal plate is the same as the width of the inner side of the scraper, and when the scraper is opened outward, the inner side contacts the top of the dust removal plate.

[0014] As a preferred technical solution of the present application, four inner lining filter plates are fixedly installed at equal angles on the side of the filter rotary barrel, and an outer filter plate is movably hinged on the outer side of the inner lining filter plate. Staggered filter holes are provided on the surfaces of the inner lining filter plate and the outer filter plate, and support rods are fixedly installed at both ends of the side of the outer side of the outer filter plate close to the telescopic plate, and the support rods are engaged in the inside of the hollow groove.

[0015] As a preferred technical solution of the present application, a ventilation groove is provided in the middle of the guide barrel, a conduit is sleeved in the middle of the ventilation groove, a swivel is rotatably clamped in the middle of the conduit, four extrusion blocks are fixedly installed at equal angles on the outside of the swivel, an extrusion groove is provided in the middle of the inner side of the telescopic plate, and the extrusion block is slidably engaged in the inside of the extrusion groove.

[0016] As a preferred technical solution of the present application, a docking slot is provided at an equal angle in the middle of the inner cavity of the filter drum, the docking slot is located on the inner side of the telescopic plate, and the extrusion block is slidably engaged in the docking slot.

[0017] As a preferred technical solution of the present application, the tops of the inner and outer ends of the conduit are respectively fixedly connected with a water outlet pipe and a water inlet pipe, the front of the box is fixedly connected with a hot air recovery port, the water inlet pipe passes through the top of the hot air recovery port, and an electric cylinder is fixedly installed on the outer side of the guide barrel, and the telescopic end of the electric cylinder is fixedly connected to the inner end of the conduit.

[0018] As a preferred technical solution of the present application, the two baffles are movably hinged at the top and bottom of the middle part of the inner cavity of the box body, and a pair of support springs are fixedly installed on the outer side of the baffles, and the outer ends of the support springs are fixedly connected to the inner cavity wall of the box body.

[0019] As a preferred technical solution of the present application, a sealing block is fixedly installed at the top of the inner cavity of the box body, directly above the dust removal mechanism, and a guide block is fixedly installed at the bottom of the inner cavity of the box body, located on the left side of the dust removal mechanism. The sealing block and the guide block are located on one side of the dust removal mechanism and are provided with sealing grooves, and the shape and size of the sealing grooves are adapted to the impeller plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the scheme of this application:

[0022] 1. In order to solve the problem that the dust removal process of the current dust removal process of converter flue gas in the prior art is a process of wasting precious resources of converter flue gas, a process of consuming water resources, and being unable to remove the smoke dust in the high-temperature flue gas without wasting resources, the present application cooperates with the dust removal mechanism through the baffle set. When the hot gas with smoke dust enters the interior of the box and impacts the surface of the baffle, 60% of the dust in the smoke dust can fall down through the baffle deflection effect, and the airflow is deflected back to the surface of the impeller plate and contacts the adsorption plate through the baffle effect of the top baffle, and the dust in the smoke dust is further adsorbed by the surface of the adsorption plate, so that the dust in the hot air flow can be further removed, reducing the smoke dust in the waste heat, and realizing the removal and recovery of dust in the flue gas;

[0023] 2. The dust removal mechanism and the driving mechanism provided in the present application cooperate with each other. When the dust removal mechanism can not only remove dust from smoke, but also the impeller plate, the sealing block and the guide block can be engaged with each other after the structural conversion of the driving mechanism, so as to realize the internal sealing of the box body. When the hollow inside of the conduit in the driving mechanism can be used to heat water, so as to utilize the waste heat, it can realize not only removing dust from smoke and utilizing the waste heat to heat water, but also sealing the inside of the box body after the structural conversion;

[0024] 3. By setting up the baffle and supporting spring, the baffle is used to deflect the smoke, so that the dust in the smoke can be removed. At the same time, the baffle is supported by the supporting spring so that the baffle can be opened when a deflagration occurs inside the box, thereby relieving the internal pressure of the box, achieving the deflection effect on the smoke and reducing the dust in the smoke. At the same time, it can serve as a pressure relief structure during deflagration. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in this application;

[0026] Figure 2 A schematic diagram of the back structure of a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in this application;

[0027] Figure 3 A front cross-sectional view of a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in the present application;

[0028] Figure 4 A schematic diagram of the internal structure of a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in this application;

[0029] Figure 5 A schematic diagram of the structure of the dust removal mechanism and the collision mechanism cooperating with each other in a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in this application;

[0030] Figure 6 A schematic diagram of the hierarchical structure of a dust removal mechanism of a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in this application;

[0031] Figure 7 A partial structural cross-sectional view of a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in this application;

[0032] Figure 8 A schematic diagram of the internal structure of a filter drum of a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in this application;

[0033] Fig. 9An exploded view of the local structure of a dust removal mechanism of a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in this application;

[0034] Fig.10 A schematic diagram of the decomposed structure of a filter drum of a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in this application;

[0035] Fig.11 A schematic diagram of the decomposed structure of a collision mechanism of a dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in this application.

[0036] Indicated in the figure:

[0037] 1. Box body; 101. Air inlet pipe; 102. Pressure relief pipe; 103. Bottom box; 104. Storage box; 105. Hot air recovery port; 106. Electric cylinder; 107. Sealing block; 108. Guide block; 109. Sealing groove; 110. Baffle; 111. Support spring; 112. Dust baffle;

[0038] 2. Dust removal mechanism; 201. Filter drum; 202. Telescopic slot; 203. Docking slot; 204. Lining filter plate; 205. External filter plate; 206. Support rod; 207. Telescopic plate; 208. Impeller plate; 209. Hollow slot; 210. Scraper; 211. Adsorption plate; 212. Extrusion slot; 213. Separation slot;

[0039] 3. Driving mechanism; 301. Guide barrel; 302. Air-permeable groove; 303. Conduit; 304. Rotating ring; 305. Extrusion block; 306. Water outlet pipe; 307. Water inlet pipe;

[0040] 4. Collision mechanism; 401. Rotating shaft; 402. Gear lever; 403. Counterweight block; 404. Dust removal plate. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments 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 creative work should fall within the scope of protection of the present invention.

[0042] As described in the background technology, the dust removal process of the current converter flue gas dust removal process is a process of wasting precious converter flue gas resources, that is, a process of consuming water resources, and it is impossible to remove the dust in the high-temperature flue gas without wasting resources.

[0043] In order to solve this technical problem, the present invention provides a dust removal device for recovering waste heat from flue gas of a steelmaking converter, which is applied to dust removal for waste heat recovery.

[0044] Specifically, please refer to Figure 1-11 A dust removal device for recovering waste heat from flue gas of a steelmaking converter specifically comprises a box body 1 and a dust removal mechanism 2, the dust removal mechanism 2 is rotatably mounted in the middle of the inner cavity of the box body 1, the bottom of the left end of the box body 1 is fixedly connected with an air intake pipe 101, the right end of the box body 1 is fixedly connected with a pressure relief pipe 102, a pair of baffles 110 are arranged on one side of the pressure relief pipe 102 in the middle of the inner cavity of the box body 1, a bottom box 103 is fixedly connected at the bottom of the box body 1, a storage box 104 is slidably connected inside the bottom box 103, and a pair of dust collecting baffles 112 are symmetrically fixedly mounted on the top of the bottom box 103;

[0045] The dust removal mechanism 2 includes a filter drum 201, and four telescopic grooves 202 are provided at equal angles on the side of the circumference of the filter drum 201. A telescopic plate 207 is slidably engaged inside the telescopic groove 202. The inner side of the telescopic plate 207 is provided with a magnetic body. The outer side of the telescopic plate 207 is fixedly connected with an impeller plate 208. A scraper 210 is sleeved inside the impeller plate 208. The outer end of the scraper 210 is movably hinged to the outermost side of the impeller plate 208 through a torsion spring. An array of adsorption plates 211 are fixedly installed inside the impeller plate 208. The surface array of the scraper 210 is provided with a separation groove 213. The adsorption plate 211 is engaged inside the separation groove 213. A layer of smoke is attached to the surface of the adsorption plate 211 by physical fumigation.

[0046] The middle part of the dust removal mechanism 2 is sleeved with a driving mechanism 3 , which includes a guide barrel 301 . The guide barrel 301 is fixedly installed in the middle part of the box body 1 , and the filter rotary barrel 201 is rotatably sleeved outside the guide barrel 301 .

[0047] Through the physical fumigation process, the adsorption plate 211 can be exposed to specific smoke, and the deposition and adsorption of smoke on the surface of the adsorption plate 211 can be used to form a fumigation effect, thereby enhancing the adsorption capacity of the adsorption plate 211 for smoke. The smoke is sent into the interior of the box 1 through the air intake duct 101, and the dust in the smoke is removed by 60% through the baffle 110 at the top of the dust removal mechanism 2. Then, the adsorption plate 211 and the impeller plate 208 are driven by the baffled smoke to rotate the dust removal mechanism 2, so that when the smoke enters the adsorption plate 211, the dust in the smoke can be further adsorbed again by the adsorption plate 211, so that a large amount of dust in the smoke can be removed.

[0048] The present invention provides a dust removal device for recovering waste heat from flue gas of a steelmaking converter. In order to solve the problem that the dust removal process of the current dust removal process for converter flue gas in the prior art is a process of wasting precious resources of converter flue gas, a process of consuming water resources, and being unable to remove smoke dust in high-temperature flue gas without wasting resources, the present application cooperates with the dust removal mechanism 2 through the baffle 110 set. When hot air carrying smoke dust enters the interior of the box body 1 and impacts the surface of the baffle 110, 60% of the dust in the smoke dust can fall down through the deflection effect of the baffle 110. The airflow is deflected back to the surface of the impeller plate 208 and contacts the adsorption plate 211 through the deflection effect of the top baffle 110. The dust in the smoke is further adsorbed by the surface of the adsorption plate 211, so that the dust in the hot air flow can be further removed, the smoke dust in the waste heat is reduced, and the removal and recovery of dust in the flue gas is achieved.

[0049] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0050] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0051] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0052] Example 1

[0053] Please refer to Figure 5 and Fig.11A dust removal device for recovering waste heat from flue gas of a steelmaking converter, wherein a collision mechanism 4 is arranged at the top of the inner cavity of a bottom box 103, and the collision mechanism 4 comprises a rotating shaft 401, and the rotating shaft 401 is hinged at the top of the inner cavity of the bottom box 103 through a torsion spring, and a gear lever 402 is fixedly installed at the inner and outer ends of the left side of the rotating shaft 401, and a counterweight 403 is fixedly installed on the inner side of the top of the gear lever 402, and hollow grooves 209 are symmetrically opened at both ends of the outer side of the impeller plate 208, and the counterweight 403 and the hollow groove 209 are located on the same vertical plane, and the hollow groove When the impeller plate 208 rotates to the bottom, it docks with the counterweight block 403, and the two counterweight blocks 403 collide with the two ends of the scraper 210 respectively. A dust removal plate 404 is fixedly installed in the right array of the rotating shaft 401. The width of the dust removal plate 404 is the same as the width of the inner side of the scraper 210. When the scraper 210 is opened outward, the inner side contacts the top of the dust removal plate 404. The collision mechanism 4 cooperates with the dust removal mechanism 2. When the impeller plate 208 rotates to the bottom, the hollow grooves 209 opened at both ends of the impeller plate 208 collide with the counterweight blocks 403. The two ends of the scraper 210 are docked with each other, and the counterweight block 403 hits the two ends of the scraper 210, so that the scraper 210 is instantly spread out, so that the scraper 210 scrapes off the smoke adsorbed on the surface of the adsorption plate 211 at the moment of spreading out and drops it into the storage box 104 at the bottom, and then, during the continuous rotation of the impeller plate 208, the arc-shaped inner side of the scraper 210 contacts the top of the dust removal plate 404, so that the dust removal plate 404 scrapes off the smoke on the arc-shaped inner side of the scraper 210, so that the smoke is recovered, and at the same time as the scraper 210 is opened, When the support rod 206 on the outside of the outer filter plate 205 adjacent to the scraper 210 loses the support of the scraper 210, the outer filter plate 205 will automatically open, so that the filter holes on the inner lining filter plate 204 and the outer filter plate 205 are opened. At this time, the hot air flow that has passed the dust removal will pass through the filter holes on the surface of the inner lining filter plate 204 and enter the interior of the filter drum 201, and will be recovered through the guide barrel 301 and the hot air recovery port 105. When the inner lining filter plate 204 and the outer filter plate 205 are merged, the two will block and seal the filter holes on the surface of each other.

[0054] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, a dust removal device for recovering waste heat from flue gas in a steelmaking converter, wherein two baffles 110 are respectively movably hinged at the top and bottom of the middle part of the inner cavity of the box body 1, and a pair of supporting springs 111 are fixedly installed on the outer side of the baffle 110, and the outer ends of the supporting springs 111 are fixedly connected to the inner cavity wall of the box body 1. The top of the inner cavity of the box body 1 is located directly above the dust removal mechanism 2 and a sealing block 107 is fixedly installed thereon, and the bottom of the inner cavity of the box body 1 is located on the left side of the dust removal mechanism 2 and a guide block 108 is fixedly installed thereon. The baffle 110 supported by the supporting springs 111 can deflect the incoming smoke and dust, so that most of the dust in the smoke and dust falls and falls into the storage box 104 at the bottom. When deflagration occurs inside the box body 1, the huge impact force will cause the baffle 110 to squeeze the supporting springs 111 and open them outward, thereby achieving pressure relief. The guide block 108 can be used to guide the smoke and dust, so that the smoke and dust pass through the top of the dust removal mechanism 2 and drive the dust removal mechanism 2.

[0055] By setting the baffle 110 and the support spring 111, the baffle 110 is used to deflect the smoke, so that the dust in the smoke can be removed. At the same time, the support spring 111 supports the baffle 110 so that the baffle 110 can be opened when a deflagration occurs inside the box body 1, so that the internal pressure of the box body 1 is relieved, the smoke is deflected, and the dust in the smoke is reduced. At the same time, it can serve as a pressure relief structure during a deflagration.

[0056] Example 2

[0057] The dust removal device for recovering waste heat from flue gas of a steelmaking converter provided in Example 1 is further optimized. Specifically, Figure 4-11As shown, four inner lining filter plates 204 are fixedly installed at equal angles on the side of the filter rotary barrel 201, and an outer filter plate 205 is movably hinged on the outer side of the inner lining filter plate 204. The surfaces of the inner lining filter plate 204 and the outer filter plate 205 are provided with staggered filter holes. Support rods 206 are fixedly installed on both ends of the side of the outer filter plate 205 close to the telescopic plate 207. The support rods 206 are engaged in the interior of the hollow groove 209. A ventilation groove 302 is opened in the middle of the guide barrel 301, and a conduit 303 is sleeved in the middle of the ventilation groove 302. The middle part of the conduit 303 rotates A rotating ring 304 is clamped, and four extrusion blocks 305 are fixedly installed at equal angles on the outer side of the rotating ring 304. An extrusion groove 212 is opened in the middle of the inner side of the telescopic plate 207, and the extrusion block 305 is slidably clamped in the inner part of the extrusion groove 212. A docking slot 203 is opened at equal angles in the middle of the inner cavity of the filter rotary barrel 201. The docking slot 203 is located on the inner side of the telescopic plate 207. The extrusion block 305 is slidably clamped in the inner part of the docking slot 203. The tops of the inner and outer ends of the conduit 303 are respectively fixedly connected with a water outlet pipe 306 and a water inlet pipe 307. The box body 1 The front side of the guide barrel 301 is fixedly connected with a hot gas recovery port 105, and a water inlet pipe 307 passes through the top of the hot gas recovery port 105. An electric cylinder 106 is fixedly installed on the outside of the guide barrel 301, and the telescopic end of the electric cylinder 106 is fixedly connected to the inner end of the guide tube 303. The sealing block 107 and the guide block 108 are located on one side of the dust removal mechanism 2 and are provided with a sealing groove 109. The shape and size of the sealing groove 109 are adapted to the impeller plate 208. When waste heat recovery is not required, the guide tube 303 is driven to move inward by the electric cylinder 106. At this time, the guide tube 303 will pass through The extrusion block 305 on the outside of the rotating ring 304 squeezes the extrusion groove 212 on the inside of the telescopic plate 207, so that the telescopic plate 207 extends outward. At this time, the telescopic plate 207 makes the outer impeller plate 208 engage with the sealing groove 109 on the surface of the sealing block 107 and the guide block 108, so that the interior of the box body 1 is sealed. At this time, smoke and dust with hot air cannot continue to enter the interior of the box body 1. Water can be sent into the interior of the conduit 303 through the water inlet pipe 307, and then sent out through the water outlet pipe 306, thereby realizing the utilization of waste heat.

[0058] The dust removal mechanism 2 and the driving mechanism 3 are used in cooperation with each other. The dust removal mechanism 2 can not only remove the dust in the smoke, but also make the impeller plate 208, the sealing block 107 and the guide block 108 engage with each other after the structural conversion of the driving mechanism 3, so as to realize the internal sealing of the box body 1. When the conduit 303 in the driving mechanism 3 is hollow inside, it can be used to heat water, so as to utilize the waste heat, so as to realize not only the removal of dust in the smoke and the utilization of waste heat to heat the water, but also the sealing of the interior of the box body 1 after the structural conversion.

[0059] The use process of the dust removal device for recovering waste heat from flue gas of a steelmaking converter provided by the present invention is as follows:

[0060] The flue gas is sent into the interior of the box 1 through the air intake duct 101. At this time, the flue gas passes through the guide block 108 to guide the flue gas into the top of the dust removal mechanism 2, and drives the dust removal mechanism 2 to rotate and impact the surface of the baffle 110, so that 60% of the smoke in the flue gas is removed and falls into the dust collecting baffle 112 at the bottom and enters the storage box 104. Then, the flue gas impacts the surface of the impeller plate 208 again, and the smoke in the flue gas is adsorbed by the adsorption plate 211 inside the impeller plate 208, so as to further remove the smoke in the flue gas. When a deflagration occurs inside the box 1, the huge impact force causes the baffle 110 to squeeze the support spring 111 to open outward, thereby achieving pressure relief.

[0061] When the impeller plate 208 rotates to the bottom, it cooperates with the collision mechanism 4, and the hollow grooves 209 opened at both ends of the impeller plate 208 are connected with the counterweight block 403, and the counterweight block 403 hits the two ends of the scraper 210, so that the scraper 210 is instantly spread out, so that the scraper 210 scrapes the smoke adsorbed on the surface of the adsorption plate 211 at the moment of spreading and drops it into the storage box 104 at the bottom, and then in the process of the impeller plate 208 continuing to rotate, the arc-shaped inner side of the scraper 210 contacts the top of the dust removal plate 404, so that the dust removal plate 404 scrapes the smoke on the arc-shaped inner side of the scraper 210, so that the smoke is recovered. When the scraper 210 is opened, the support rod 206 on the outer side of the outer filter plate 205 adjacent to the scraper 210 loses the support of the scraper 210, and the outer filter plate 205 is automatically opened at this time, so that the filter holes on the inner lining filter plate 204 and the outer filter plate 205 are opened, and the hot air flow after dust removal will pass through the filter holes on the surface of the inner lining filter plate 204 to enter the interior of the filter rotary barrel 201, and be recovered through the guide barrel 301 and the hot air recovery port 105. When the inner lining filter plate 204 and the outer filter plate 205 are combined, the filter holes on the surface of the two will be blocked and sealed by each other, and after entering the interior of the guide barrel 301, the hot air flow is sent out for recovery through the hot air recovery port 105;

[0062] When there is no need to recover the waste heat of the flue gas, the electric cylinder 106 drives the conduit 303 to move inward. At this time, the conduit 303 will squeeze the extrusion groove 212 on the inner side of the telescopic plate 207 through the extrusion block 305 on the outer side of the swivel 304, so that the telescopic plate 207 extends outward. At this time, the telescopic plate 207 will make the outer impeller plate 208 engage with the sealing groove 109 on the surface of the sealing block 107 and the guide block 108, so that the interior of the box body 1 is sealed. At this time, the smoke and dust with hot gas cannot continue to enter the interior of the box body 1.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A dust removal device for recovering waste heat from flue gas of a steelmaking converter, characterized in that: The invention comprises a box body (1) and a dust removal mechanism (2), wherein the dust removal mechanism (2) is rotatably mounted in the middle of the inner cavity of the box body (1), the bottom of the left end of the box body (1) is fixedly connected to an air intake pipe (101), the right end of the box body (1) is fixedly connected to a pressure relief pipe (102), a pair of baffles (110) are provided in the middle of the inner cavity of the box body (1) on one side of the pressure relief pipe (102), the bottom of the box body (1) is fixedly connected to a bottom box (103), a storage box (104) is slidably engaged inside the bottom box (103), and a pair of dust collecting baffles (112) are symmetrically fixedly mounted on the top of the bottom box (103); The dust removal mechanism (2) comprises a filter rotary barrel (201), four telescopic grooves (202) are provided at equal angles on the side surface of the circumference of the filter rotary barrel (201), a telescopic plate (207) is slidably engaged inside the telescopic groove (202), the inner side of the telescopic plate (207) is magnetic, the outer side of the telescopic plate (207) is fixedly connected to an impeller plate (208), a scraper (210) is sleeved inside the impeller plate (208), the outer end of the scraper (210) is movably hinged to the outermost side of the impeller plate (208) through a torsion spring, an array of adsorption plates (211) are fixedly installed inside the impeller plate (208), the surface of the scraper (210) is provided with a separation groove (213) in an array, the adsorption plate (211) is engaged inside the separation groove (213), and a layer of smoke is attached to the surface of the adsorption plate (211) by physical fumigation; The middle part of the dust removal mechanism (2) is sleeved with a driving mechanism (3), the driving mechanism (3) comprising a guide barrel (301), the guide barrel (301) being fixedly mounted in the middle part of the box body (1), the filter rotary barrel (201) being rotatably sleeved outside the guide barrel (301), the two baffles (110) being movably hinged at the top and bottom of the middle part of the inner cavity of the box body (1), respectively, a pair of support springs (111) being fixedly mounted on the outer side of the baffles (110), the outer ends of the support springs (111) being fixedly connected to the inner cavity wall of the box body (1).

2. A dust removal device for recovering waste heat from flue gas of a steelmaking converter according to claim 1, characterized in that: A collision mechanism (4) is provided at the top of the inner cavity of the bottom box (103), and the collision mechanism (4) comprises a rotating shaft (401). The rotating shaft (401) is movably hinged to the top of the inner cavity of the bottom box (103) via a torsion spring, and a shift lever (402) is fixedly mounted on the inner and outer ends of the left side of the rotating shaft (401), and a counterweight (403) is fixedly mounted on the inner side of the top of the shift lever (402).

3. A dust removal device for recovering waste heat from flue gas of a steelmaking converter according to claim 2, characterized in that: The outer ends of the impeller plate (208) are symmetrically provided with hollow grooves (209); the counterweight block (403) and the hollow groove (209) are located on the same vertical plane; when the hollow groove (209) rotates to the bottom, it butts against the counterweight block (403); and the two counterweight blocks (403) collide with the two ends of the scraper (210) respectively.

4. A dust removal device for recovering waste heat from flue gas of a steelmaking converter according to claim 3, characterized in that: A dust removal plate (404) is fixedly mounted in the right array of the rotating shaft (401); the width of the dust removal plate (404) is the same as the width of the inner side of the scraper (210); when the scraper (210) is opened outward, the inner side contacts the top of the dust removal plate (404).

5. A dust removal device for recovering waste heat from flue gas of a steelmaking converter according to claim 4, characterized in that: Four inner lining filter plates (204) are fixedly mounted at equal angles on the side of the filter rotary barrel (201); an outer filter plate (205) is movably hinged on the outer side of the inner lining filter plate (204); staggered filter holes are provided on the surfaces of the inner lining filter plate (204) and the outer filter plate (205); support rods (206) are fixedly mounted on both ends of the side of the outer side of the outer filter plate (205) close to the telescopic plate (207); the support rods (206) are engaged in the interior of the hollow groove (209).

6. A dust removal device for recovering waste heat from flue gas of a steelmaking converter according to claim 5, characterized in that: A ventilation groove (302) is provided in the middle of the guide barrel (301), a guide tube (303) is sleeved in the middle of the ventilation groove (302), a rotating ring (304) is rotatably engaged in the middle of the guide tube (303), four extrusion blocks (305) are fixedly mounted at equal angles on the outer side of the rotating ring (304), an extrusion groove (212) is provided in the middle of the inner side of the telescopic plate (207), and the extrusion blocks (305) are slidably engaged in the interior of the extrusion groove (212).

7. A dust removal device for recovering waste heat from flue gas of a steelmaking converter according to claim 6, characterized in that: A docking slot (203) is provided at an equal angle in the middle of the inner cavity of the filter rotary barrel (201); the docking slot (203) is located on the inner side of the telescopic plate (207); and the extrusion block (305) is slidably engaged in the interior of the docking slot (203).

8. The dust removal device for recovering waste heat from flue gas of a steelmaking converter according to claim 7, characterized in that: The tops of the inner and outer ends of the conduit (303) are fixedly connected to a water outlet pipe (306) and a water inlet pipe (307), respectively; the front of the box (1) is fixedly connected to a hot air recovery port (105); the water inlet pipe (307) passes through the top of the hot air recovery port (105); an electric cylinder (106) is fixedly mounted on the outside of the guide barrel (301); and the telescopic end of the electric cylinder (106) is fixedly connected to the inner end of the conduit (303).

9. A dust removal device for recovering waste heat from flue gas of a steelmaking converter according to claim 8, characterized in that: A sealing block (107) is fixedly mounted on the top of the inner cavity of the box body (1) located directly above the dust removal mechanism (2), and a guide block (108) is fixedly mounted on the bottom of the inner cavity of the box body (1) located on the left side of the dust removal mechanism (2). The sealing block (107) and the guide block (108) are both provided with a sealing groove (109) on one side of the dust removal mechanism (2), and the shape and size of the sealing groove (109) are compatible with the impeller plate (208).

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