Environment-friendly spraying equipment for flue gas purification of submerged arc furnace

Abstract

The invention discloses environment-friendly spraying equipment for flue gas purification of a submerged arc furnace, and relates to the technical field of alloy smelting. The environment-friendly spraying equipment for flue gas purification of the submerged arc furnace comprises a spraying tank and further comprises an atomizing disc located on the upper portion in the submerged arc furnace, rotational flow plates distributed in the spraying tank in a radial shape are arranged below the atomizing disc, and a filter screen plate is arranged below the rotational flow plates. And the corresponding rotational flow plate and the filter screen plate can rotate oppositely or oppositely by taking the corresponding radius of the spraying tank as the axis. Through the arrangement of the driving assembly, the rotational flow plate keeps rotating and has the characteristic of reciprocating deflection at the same time, so that spiral airflow in different dimensions is formed, the spiral rising state of continuously impacting existing flue gas is achieved, the spiral airflow of the existing flue gas is spirally and dynamically turned over under the subsequent continuously-changing impact, and the flue gas is prevented from being scratched. Therefore, the spiral airflow is completely exposed inside and outside and is fully mixed with water mist, and the atomizing and spraying efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of alloy smelting technology, specifically to an environmentally friendly spraying device for purifying flue gas from submerged arc furnaces. Background Technology

[0002] As a type of smelting equipment, the submerged arc furnace utilizes the electric arc heat between the electrodes and the furnace charge or the resistance heat of the furnace charge itself to achieve high-temperature smelting of refractory metals, alloys and other materials. It is a key thermal equipment in the fields of metallurgy and materials processing. For example, Chinese patent CN111850379A discloses the furnace body structure of the submerged arc furnace, which achieves high-temperature smelting of metals by utilizing the combination of the furnace body and its internal cooling pipes, high thermal conductivity castable layer, high thermal conductivity carbon brick layer and carbon-containing refractory brick layer.

[0003] During the high-temperature smelting of metals in an electric arc furnace, high-temperature dust-laden flue gas is generated. This flue gas contains toxic and harmful components and cannot be directly discharged into the air. Therefore, a spray system is usually installed on one side of the electric arc furnace to purify the high-temperature dust-laden flue gas generated during the smelting of alloy metals. For example, Chinese Patent No. CN111450691B discloses a spray tower. This type of device uses multiple sets of swirl plates arranged in parallel along the cross-sectional direction of the tower body to simultaneously perform gas-liquid mixing. This improves the uniformity of the airflow distribution along the cross-sectional direction of the tower body, allowing the airflow and liquid to mix and contact more fully and evenly, thereby improving the dust removal and purification effect on the gas.

[0004] However, in existing cyclone spray towers, when the cyclone plates spirally guide the high-temperature dust-laden flue gas upwards and mix it with water mist, the spiral upward movement of the high-temperature dust-laden flue gas in a fixed state results in a situation where, although the spiral airflow can generate stable centrifugal force, the spiral thrust generated by the airflow also causes the airflow in the center of the spiral to directly pass over the water mist. As a result, the water mist often only mixes with the gas-liquid mixture of the outer spiral airflow, with a lower degree of gas-liquid combination with the gas flow in the center. This leads to a more localized atomization spray and insufficient comprehensive atomization spray efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an environmentally friendly spraying device for purifying flue gas from submerged arc furnaces, thus solving the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly spraying device for purifying flue gas from a submerged arc furnace, comprising a spraying tank, and further comprising: an atomizing disc located above the spraying tank; swirl plates located below the atomizing disc and radially distributed inside the spraying tank, with an airflow channel formed between adjacent swirl plates, the flue gas forcibly guiding the swirl plates to revolve around the center of the spraying tank, causing the flue gas to spiral upward along the airflow channel; a filter plate located below the swirl plates, with the width of the filter plate sufficient to cover the airflow channel between adjacent swirl plates; the corresponding swirl plates and filter plates can rotate relative to or away from each other about the corresponding radius of the spraying tank, the swirl plates changing their swirl angle with respect to the flue gas when rotating about the corresponding radius of the spraying tank, and the filter plate always covering the airflow channel when rotating; and a driving component for driving the swirl plates to rotate relative to or away from each other.

[0007] Furthermore, a first rotating shaft is provided on one side of the swirl plate, and the first rotating shaft is located on the radius of the spray tank; a second rotating shaft is provided on one side of the filter screen plate, and the second rotating shaft is rotatably installed inside the first rotating shaft, so that the swirl plate and the filter screen plate can rotate coaxially relative to each other or in opposite directions.

[0008] Furthermore, it also includes: a rotating inner ring located in the middle of the swirl plate for supporting the swirl plate; a first bushing rotatably installed inside the rotating inner ring, wherein the inner wall of the first bushing has at least one set of first sliding grooves; and a second bushing slidably installed inside the first bushing and having at least one set of first sliding buckles along its axial direction, wherein the first sliding buckles can slide along the first sliding grooves to convert the linear motion of the second bushing into the rotational motion of the first bushing, so that when the first bushing rotates, it drives the swirl plate to rotate relative to or away from the filter screen.

[0009] Furthermore, the first bushing is provided with a first bevel gear ring in the axial direction, and the first bushing is also provided with a second bevel gear ring opposite to the first bevel gear ring in the axial direction; a first bevel gear is provided at one end of the first rotating shaft, and the first bevel gear meshes with the first bevel gear ring; a second bevel gear is provided at one end of the second rotating shaft, and the second bevel gear meshes with the second bevel gear ring.

[0010] Further, the drive assembly includes: a first drive shaft axially extending through the second bushing, wherein the first drive shaft is provided with a bearing sleeve axially, and the bearing sleeve is rotatably installed inside the second bushing; a third bushing fixedly connected to the bottom end of the first drive shaft, wherein the inner wall of the third bushing is provided with at least one set of second sliding buckles; a third drive shaft rotatably installed inside the third bushing, wherein the third drive shaft is axially formed with a second sliding groove, and the second sliding buckles can slide along the second sliding groove, converting the rotational motion of the third drive shaft into the linear motion of the third bushing, causing the first drive shaft to reciprocate up and down, driving the vortex plate to rotate relative to or opposite to it.

[0011] Furthermore, the drive assembly further includes: a second drive shaft disposed below the third bushing, at least one set of sliding shafts disposed above the second drive shaft, the sliding shafts being slidably connected to the third bushing, so that the second drive shaft drives the first drive shaft to rotate synchronously; a first gear pair is provided in the axial direction of the second drive shaft, and a second gear pair is provided in the axial direction of the third drive shaft, the transmission ratio of the second gear pair being greater than the transmission ratio of the first gear pair, so that the rotational speed of the third drive shaft is greater than that of the second drive shaft, for driving the first drive shaft to reciprocate and rotate synchronously.

[0012] Furthermore, the first drive shaft is fixedly connected to the atomizing disk and is used to drive the atomizing disk to rotate and move up and down to generate spiral water mist of different dimensions. At the same time, a water supply structure that moves synchronously with the atomizing disk is also provided on the moving path of the atomizing disk. The water supply structure includes: a lifting slide rail, which is arranged on the lifting moving path of the atomizing disk and at least one set is provided. The slide of the lifting slide rail is provided with a sliding bracket; a diverter plate, which is fixedly connected to one end of the sliding bracket. The diverter plate is rotatably connected to the atomizing disk through a shaft seal.

[0013] Furthermore, it also includes: a filter tank located at the bottom opening of the spray tank, the filter tank having at least one packing layer inside; a circulating water pump located on at least one side of the filter tank, wherein the inlet of the circulating water pump is provided with a first water pipe connected to the filter tank, and the outlet of the circulating water pump is provided with a second water pipe; and a water supply straight pipe connected to at least one side of the distribution plate and connected to the second water pipe via a water supply hose.

[0014] Furthermore, it also includes: an overflow trough, arranged on the rotation path of the swirl plate, wherein the overflow trough is provided with at least one set of overflow pipes along its circumference, and the overflow pipes extend to the opening of the filter tank; a rotating outer ring, located outside the swirl plate, for supporting the swirl plate, wherein the rotating outer ring is provided with at least one set of scrapers along its circumference, and the scrapers are located inside the overflow trough.

[0015] Furthermore, it also includes a purification tank installed at the top opening of the spray tank, with a purification layer inside the purification tank.

[0016] The present invention has the following beneficial effects:

[0017] (1) The environmentally friendly spraying equipment for purifying flue gas from a blast furnace can drive the swirl plate to rotate and form a spiral upward state of flue gas by setting the drive component, so that the blades of the swirl plate can be driven to swing back and forth. This allows the swirl plate to maintain rotation while also having the characteristic of swinging back and forth, so as to form a spiral airflow in different dimensions, which continuously "impacts" the existing spiral upward state of flue gas. This causes the spiral airflow of the existing flue gas to spiral dynamically roll under the continuous "impact" of subsequent changes, so that the spiral airflow inside and outside is fully exposed and fully mixed with water mist, thereby improving the atomization spraying efficiency.

[0018] (2) The environmentally friendly spraying equipment for purifying flue gas from a submerged arc furnace, through the setting of the drive component, drives the swirl plate to swing back and forth while simultaneously driving the atomizing disc to rotate and move up and down synchronously, so that the atomizing disc responds to the changes in different dimensions of the spiral airflow and generates water mist in different dimensions, which always maintains a suitable distance and height with the spiral airflow for gas-liquid combination, so that the water mist and the spiral airflow can fully and comprehensively contact each other, further improving the atomization spraying efficiency.

[0019] (3) The environmentally friendly spraying equipment for purifying flue gas from a submerged arc furnace, through the setting of the drive components, drives the swirl plate to swing back and forth while simultaneously driving the filter screen plate to move synchronously relative to or away from the swirl plate. When the direction of the airflow channel changes during the swirl plate swinging, the filter screen plate swings synchronously, always "covering" the airflow channel of the flue gas, pre-filtering and removing dust from the flue gas spirally drawn from the airflow channel, reducing the intensity of subsequent atomized spraying. Furthermore, the swinging change of the filter screen plate forms an impact contact state with the flue gas at different angles, causing the impurities adhering to the filter screen plate to fall off under the impact of the flue gas at different angles, thus completing the self-cleaning work.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a partial cross-sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the first state of atomized spraying of flue gas from a submerged arc furnace in this invention.

[0024] Figure 4 This is a schematic diagram of the second state of atomized spraying of flue gas from a submerged arc furnace in this invention.

[0025] Figure 5 This is a schematic diagram of the first arrangement of the cyclone plate and the filter screen plate in this invention;

[0026] Figure 6 This is a schematic diagram of the second arrangement of the cyclone plate and the filter screen plate in this invention;

[0027] Figure 7 This is a schematic diagram of the third arrangement of the cyclone plate and the filter screen plate in this invention;

[0028] Figure 8 This is a schematic diagram of the assembly of the cyclone plate and the filter screen plate in this invention;

[0029] Figure 9 This is an exploded view of the assembly of the cyclone plate and the filter screen plate in this invention;

[0030] Figure 10 This is a schematic diagram of the first driving mechanism of the cyclone plate and the filter screen plate in this invention;

[0031] Figure 11 This is a schematic diagram of the second drive mechanism for the cyclone plate and the filter screen in this invention;

[0032] Figure 12 This is a schematic diagram of the third drive mechanism for the cyclone plate and the filter screen plate in this invention.

[0033] Figure 13 Figures a, b, and c in the diagram represent the changes in the sway state of the cyclone plate and the filter screen plate in this invention, respectively.

[0034] Figure 14 This is a schematic diagram of the overflow channel in this invention;

[0035] Figure 15 This is a schematic diagram of the first rotation and lifting of the atomizing disc in this invention;

[0036] Figure 16 This is a schematic diagram of the second rotation and lifting of the atomizing disc in this invention;

[0037] Figure 17 This is a schematic diagram of the first rotational lifting drive of the drive component in this invention;

[0038] Figure 18 This is a schematic diagram of the second rotational lifting drive of the drive component in this invention;

[0039] Figure 19 This is a schematic diagram of the third rotational lifting drive of the drive component in this invention;

[0040] Figure 20 This is a schematic diagram of the assembly and driving of the third bushing and the third drive shaft in this invention;

[0041] Figure 21 This is a schematic diagram of the conveying and circulation of flue gas from a submerged arc furnace in this invention.

[0042] In the diagram, 1. Spray tank; 110. Air inlet; 2. Purification tank; 3. Filter tank; 4. Circulating water pump; 410. First water pipe; 420. Second water pipe; 5. Swirl plate; 510. First rotating shaft; 520. Clearing cavity; 6. Filter screen; 610. Second rotating shaft; 7. Atomizing disc; 8. Overflow trough; 9. Overflow pipe; 10. Purification layer; 11. Packing layer; 12. Overflow port; 13. Rotating outer ring; 14. Scraper; 15. Water supply hose; 16. Water supply straight pipe; 17. Diverter plate; 18. Sliding bracket; 19. Lifting slide rail; 20. Fixed bracket; 2 1. Housing; 22. Drive motor; 23. Rotating inner ring; 24. First drive shaft; 2410. Bearing sleeve; 25. First bushing; 2510. First slide groove; 26. First bevel gear; 27. Second bevel gear; 28. First bevel gear ring; 29. ​​Second bevel gear ring; 30. Second bushing; 3010. First sliding buckle; 31. Second drive shaft; 32. Third bushing; 3210. Second sliding buckle; 33. Sliding shaft; 34. First gear pair; 35. Second gear pair; 36. Third drive shaft; 3610. Second slide groove; 37. Mineral arc furnace; 38. Ventilation duct. Detailed Implementation

[0043] 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.

[0044] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0045] The following is based on Figures 1-21 This invention describes an environmentally friendly spraying device for purifying flue gas from a submerged arc furnace, provided by an embodiment of the present invention.

[0046] like Figures 1-4 , Figure 13 , Figure 21As shown, an environmentally friendly spraying device for purifying flue gas from a submerged arc furnace includes a submerged arc furnace 37. The submerged arc furnace 37 performs high-temperature melting of alloy metals inside, and the dust-laden flue gas generated during the melting process is guided to a spray tank 1 for spraying purification through a ventilation duct 38. The spray tank 1 has radially distributed swirl plates 5, with airflow channels formed between adjacent swirl plates 5. The flue gas generated from melting alloys in the submerged arc furnace is forcibly guided to rotate around the center of the spray tank 1, causing the flue gas to spiral upward along the airflow channels. Simultaneously, a drive assembly is provided to drive the swirl plates 5 to rotate around the corresponding radius of the spray tank 1, achieving reciprocating oscillation and changing the spiral guide angle of the swirl plates 5. This causes the swirl plates 5 to "disrupt" the existing spiral upward state of the flue gas and generate a new spiral upward state. When the submerged arc furnace flue gas is transported and circulated into the spray tank 1, its wind force drives the swirl plates 5 to rotate, causing the flue gas to change from a chaotic state to an orderly spiral upward state. The spiral flow of flue gas allows for more thorough contact with the water mist, and the spiral flow also generates centrifugal force, causing the water mist to be thrown against the inner wall of the spray tank 1 for settling, making the spiral ascent of the flue gas more continuous. During the rotation of the swirl plate 5, the drive components can drive the blades of the swirl plate 5 to oscillate back and forth, giving the swirl plate 5 the characteristics of rotation and oscillation. By changing the tilt angle of the swirl plate 5 (controlling the tilt angle of the blades of the swirl plate 5 to maintain between 30° and 45° to ensure that the wind power of the electric arc furnace drives the swirl plate 5 to rotate in real time), spiral airflows in different dimensions are formed, continuously "impacting" the existing spiral ascent of the flue gas. Under the spiral "impact" of the airflow in subsequent changes in different dimensions, the existing spiral airflow dynamically tumbles, so that the spiral airflow at the top is fully exposed to the internal and external airflows under the continuous "impact" of the new spiral airflow, and fully mixes with the water mist.

[0047] In this embodiment, an atomizing disk 7 is also arranged above the swirl plate 5. The driving component is also used to drive the atomizing disk 7 to rotate and move up and down, so that the atomizing disk 7 generates spiral water mist, which comes into contact with the flue gas in the spiral state, and moves up and down synchronously in response to the change in the spiral height of the flue gas. While driving the swirl plate 5 to swing back and forth, the driving component also drives the atomizing disk 7 to rotate and move up and down synchronously. On the one hand, the rotation of the atomizing disk 7 is used to form a denser water mist state, which is more comprehensive in gas-liquid combination with the spiral airflow. On the other hand, the up and down movement of the atomizing disk 7 is used to respond to the changes in different dimensions of the spiral airflow, generate water mist of different dimensions, and always maintain a suitable distance and height from the spiral airflow for gas-liquid combination, so that the water mist and the spiral airflow can fully and comprehensively come into contact.

[0048] Furthermore, it also includes filter screens 6 radially distributed below each swirl plate 5. The filter screens 6 are located below the swirl plates 5 and their width is sufficient to cover the airflow channel between two adjacent swirl plates 5. The drive assembly is also used to drive the rotation around the corresponding radius of the spray tank 1, so that the corresponding swirl plates 5 and filter screens 6 can rotate relative to or away from each other around the corresponding radius of the spray tank 1. That is, the filter screens 6 reciprocate relative to the swirl plates 5, and the filter screens 6 can always cover the airflow channel.

[0049] In summary, the filter plate 6 can pre-filter and remove dust from the flue gas spirally drawn from the airflow channel. While driving the swirl plate 5 to reciprocate, the drive assembly also drives the filter plate 6 to synchronously reciprocate relative to the swirl plate 5, so that when the airflow channel direction between adjacent swirl plates 5 changes, the filter plate 6 adjusts synchronously (e.g., ...). Figure 13 As shown in the diagram of state changes a, b, and c, when the sway angle of the swirl plate 5 gradually increases from small to large, the direction of its airflow channel gradually changes, and the spiral flow direction of the airflow gradually increases from low to high. At this time, by controlling the synchronous sway of the filter screen plate 6, the filter screen plate 6 is always inclined to face the opening of the airflow channel, "covering" the flow channel of the flue gas and pre-filtering and removing dust from the flue gas passing through the airflow channel. This ensures that the flue gas passing through the airflow channel is fully pre-filtered and dust-removed by the filter screen plate 6, reducing the intensity of subsequent atomized spraying. Furthermore, the sway change of the filter screen plate 6 forms an impact contact state with the flue gas at different angles, causing the impurities adhering to the filter screen plate 6 to fall off under the impact of the flue gas at different angles, completing the self-cleaning work.

[0050] like Figures 5-13 , Figures 17-20As shown, to achieve the opposing reciprocating oscillation motion of the swirl plate 5 and the filter plate 6 during rotation, the drive assembly includes a rotating inner ring 23 located in the middle of the swirl plate 5 and supporting the swirl plate 5. A housing 21 is located below the rotating inner ring 23, and the housing 21 is fixed to the spray tank 1 by a fixing bracket 20 to provide rotational support for the rotating inner ring 23. Simultaneously, a first bushing 25 is rotatably mounted inside the rotating inner ring 23, and a second bushing 30 is slidably mounted inside the first bushing 25. The inner wall of the first bushing 25 forms at least one set of first grooves 2510 (the first grooves 2510 are spiral structures), and the second bushing 30 moves along its axis... At least one set of first sliding buckles 3010 are provided. The first sliding buckles 3010 can slide along the first sliding groove 2510, converting the linear motion of the second bushing 30 into the rotational motion of the first bushing 25. This causes the first bushing 25 to rotate and drive the vortex plate 5 and the filter screen plate 6 to move in opposite directions. By controlling the second bushing 30 to reciprocate up and down relative to the first bushing 25, the first sliding buckles 3010 are pushed to reciprocate along the first sliding groove 2510, converting the linear motion into rotational motion, which is transmitted to the first bushing 25. The reciprocating rotation of the first bushing 25 generates a driving force that drives the vortex plate 5 and the filter screen plate 6 to reciprocate in opposite directions. Specifically:

[0051] like Figures 7-9 As shown, the first bushing 25 is axially provided with a first bevel gear ring 28, and the first bushing 25 is also axially provided with a second bevel gear ring 29 opposite to the first bevel gear ring 28. The swirl plate 5 has a first rotating shaft 510, and a first bevel gear 26 is provided at one end of the first rotating shaft 510. The first bevel gear 26 meshes with the first bevel gear ring 28. The filter screen plate 6 has a second rotating shaft 610, which is rotatably installed inside the first rotating shaft 510, and a second bevel gear 27 is provided at one end of it. The second bevel gear 27 meshes with the second bevel gear ring 29. During the reciprocating rotation of the first bushing 25, the first bevel gear ring 28 and the second bevel gear ring 29 arranged opposite each other are driven to reciprocate synchronously. Then, by utilizing the meshing of the first bevel gear ring 28 with the first bevel gear 26 and the meshing of the second bevel gear ring 29 with the second bevel gear 27, a driving force is generated to drive the swirl plate 5 and the filter screen plate 6 to rotate in opposite directions, so that the swirl plate 5 and the filter screen plate 6 reciprocate in opposite directions.

[0052] It should be noted that the first rotating shaft 510 is also provided with a clearance cavity 520 in the axial direction to provide the space required for the second rotating shaft 610 to be fixedly connected to the filter screen plate 6, and to enable the filter screen plate 6 and the swirl plate 5 to rotate coaxially with respect to the axes of the two sets of rotating shafts, thereby controlling the filter screen plate 6 and the swirl plate 5 to swing around the same axis.

[0053] As a further solution to this embodiment, such as Figures 10-12As shown, the drive assembly also includes a first drive shaft 24 that passes through the second bushing 30. The first drive shaft 24 is provided with a bearing sleeve 2410 in the axial direction. The bearing sleeve 2410 is rotatably installed in the second bushing 30. By controlling the first drive shaft 24 to reciprocate up and down, the second bushing 30 is driven to reciprocate up and down synchronously, generating a driving force that acts on the filter screen plate 6 and the vortex plate 5 to reciprocate and swing in opposite directions.

[0054] It should be noted that, since the first drive shaft 24 is connected to the second bushing 30 through the bearing sleeve 2410, the first drive shaft 24 and the second bushing 30 are rotatably connected. As the flue gas of the electric arc furnace drives the swirl plate 5 to rotate, the synchronous rotation of its matching rotating inner ring 23, filter screen plate 6 and its auxiliary components, first bushing 25 and its auxiliary components, and second bushing 30 and its auxiliary components does not create relative obstruction with the first drive shaft 24. This allows the second bushing 30 to rotate freely relative to the first drive shaft 24 and move synchronously up and down under the lifting thrust of the first drive shaft 24. By utilizing the lifting drive of the first drive shaft 24 on the second bushing 30, the combined rotation of the swirl plate 5 and the filter screen plate 6 has the characteristic of reciprocating oscillation.

[0055] Furthermore, such as Figures 17-20 As shown, the drive assembly also includes a third bushing 32 fixed to the bottom end of the first drive shaft 24. The inner wall of the third bushing 32 is provided with at least one set of second sliding buckles 3210. At the same time, a second drive shaft 31 is provided below the third bushing 32. The second drive shaft 31 is rotatably mounted on the housing 21, and at least one set of sliding shafts 33 is provided above the second drive shaft 31. The sliding shafts 33 are slidably connected to the third bushing 32, so that the second drive shaft 31 drives the first drive shaft 24 to rotate synchronously (and the first drive shaft 24 can move up and down relative to the second drive shaft 31). Furthermore, a third drive shaft 36 is rotatably mounted inside the third bushing 32. The third drive shaft 36 is rotatably mounted on the housing 21. The third drive shaft 36 has a second sliding groove 3610 formed axially (the second sliding groove 3610 is a closed-loop spiral structure). The second sliding buckle 3210 can slide along the second sliding groove 3610, converting the rotational motion of the third drive shaft 36 into the linear motion of the third bushing 32, so that the first drive shaft 24 rotates and moves up and down at the same time. By controlling the rotation of the second drive shaft 31, the first drive shaft 24 is driven to rotate under the arm force transmission of the sliding shaft 33 (in preparation for driving the rotation of the atomizing disc 7). At the same time, the rotation of the third drive shaft 36 is synchronously controlled. With the cooperation of the second sliding buckle 3210 and the second sliding groove 3610, the third bushing 32 is pushed to move up and down relative to the sliding shaft 33, which in turn drives the first drive shaft 24 to move up and down. The reciprocating up and down of the first drive shaft 24 generates a driving force that acts on the reciprocating sway of the vortex plate 5 and the filter plate 6, and also generates a driving force that acts on the rotation and up and down of the atomizing disc 7.

[0056] It should be noted that a drive motor 22 is provided at the bottom of the housing 21. The drive motor 22 has a first gear pair 34 between it and the second drive shaft 31, and a second gear pair 35 between it and the third drive shaft 36. This allows the drive motor 22 to control the rotation of both the second drive shaft 31 and the third drive shaft 36. Furthermore, by setting the first gear pair 34 as a differential gear structure and the second gear pair 35 as a same-speed gear structure, the third drive shaft 36 rotates on its own axis while also rotating relative to the second drive shaft 31. This drives the second slide groove 3610 to rotate actively relative to the second slide buckle 3210, converting the rotational force into a linear force. This generates a lifting driving force acting on the first drive shaft 24, so that the first drive shaft 24 can rotate while also having the ability to move up and down.

[0057] like Figures 3-4 , Figures 15-16 As shown, to achieve water mist spraying at different dimensions by the atomizing disc 7, the top end of the first drive shaft 24 is fixedly connected to the atomizing disc 7. The rotation and reciprocating lifting of the first drive shaft 24 drive the atomizing disc 7 to rotate and move vertically. Simultaneously, a water supply structure that moves synchronously with the atomizing disc 7 is also provided along its moving path. The water supply structure includes two sets of lifting slide rails 19 arranged along the lifting path of the atomizing disc 7. The lifting slide rails 19 are fixedly connected to the spray tank 1, and the slide table of the lifting slide rails 19 is provided with a sliding bracket 18. The other end of the sliding bracket 18 is connected to the diverter disc. Connected to the atomizing disk 7 via a shaft seal, the diverter disk 17 is rotatably connected to the atomizing disk 7. Utilizing the rotatable connection between the atomizing disk 7 and the diverter disk 17, the diverter disk 17 provides rotational support for the atomizing disk 7 while simultaneously supplying water to the atomizing disk 7 to prepare for spraying water mist. Then, with the cooperation of the lifting slide rail 19 and the sliding bracket 18, the diverter disk 17 is guided and limited (the diverter disk 17 provides rotational support for the atomizing disk 7 while also acting as a lifting guide), allowing the atomizing disk 7 to rotate and rise synchronously around the spiral airflow under the drive of the first drive shaft 24.

[0058] like Figures 1-2 , Figure 14As shown, to achieve circulating water supply to the atomizing disc 7, a filter tank 3 is installed at the bottom opening of the spray tank 1. The filter tank 3 contains at least one packing layer 11. Simultaneously, circulating water pumps 4 are evenly distributed on both sides of the filter tank 3. The inlet of the circulating water pump 4 is connected to a first water pipe 410 connected to the filter tank 3, and the outlet of the circulating water pump 4 is connected to a second water pipe 420. Furthermore, straight water supply pipes 16 are connected to both sides of the distribution disc 17, and the straight water supply pipes 16 are connected to the second water pipes 420 via water supply hoses 15. (Through the water supply hose 15, the expansion and contraction of the atomizing disc 7 and the diversion disc 17 during their lifting and lowering process can always maintain water supply.) The water mist after the gas and liquid combine falls into the filter tank 3 under the action of gravity. During the falling process, the filler layer 11 filters the dust impurities in the water mist, so that the water mist is purified and then re-gathers at the bottom of the filter tank 3. At this time, the pump pressure of the circulating water pump 4 is used to pump the water back into the diversion disc 17 to provide circulating water for the atomizing disc 7.

[0059] It should be noted that, as Figure 14 As shown, an overflow trough 8 is arranged along the rotation path of the swirl plate 5. The overflow trough 8 is fixed to the spray tank 1. The overflow trough 8 has at least one set of overflow ports 12 along its circumference, and an overflow pipe 9 extending to the opening of the filter tank 3 is provided below the overflow ports 12. At the same time, a rotating outer ring 13 is also provided on the outside of the swirl plate 5 for supporting the outer ring of the swirl plate 5. The rotating outer ring 13 has at least one set of scrapers 14 along its circumference. The scrapers 14 are located in the overflow trough 8, and the flue gas from the submerged arc furnace mixes with the flue gas from the submerged arc furnace. During the water mist gas-liquid combination process, under the action of spiral force, the gas-liquid mixture is centrifugally thrown towards the inner wall of the spray tank 1. At this time, under the action of gravity, the gas-liquid mixture gathers in the overflow tank 8. The swirl plate 5 drives the rotation of the outer ring 13, which pushes the scraper 14 to circulate and scrape in the overflow tank 8, pushing the gas-liquid mixture in the overflow tank 8 to the overflow port 12, and directly discharged into the filter tank 3 through the overflow pipe 9, so as to avoid the suspension of the gas-liquid mixture and affect the continuous gas-liquid combination of the airflow and water mist.

[0060] In addition to the above, such as Figures 1-2 As shown, a purification tank 2 is installed at the top opening of the spray tank 1. The purification tank 2 has a purification layer 10 inside. The airflow after atomization spraying flows into the purification tank 2. Through the setting of the purification layer 10 (such as activated carbon material) inside the purification tank 2, the residual SO2 in the flue gas is desulfurized by dry method, so that the flue gas of the electric arc furnace is discharged after atomization spraying and desulfurization treatment.

[0061] When in use (working), the dust-laden flue gas generated by the high-temperature melting of alloy metal inside the electric arc furnace 37 is discharged through the ventilation duct 38 and transported to the spray tank 1 through the air inlet 110 on the spray tank 1 for spray purification. When the flue gas flows inside the spray tank 1, its wind force drives the swirl plate 5 to rotate, so that the flue gas changes from a chaotic state to an orderly spiral upward state for atomization spraying.

[0062] During the spiral ascent of flue gas, the synchronous drive of the drive components drives the rotating swirl plate 5 to reciprocate and swing at the same time, changing the swing angle of the blades of the swirl plate 5, forming spiral airflow in different dimensions. Under the spiral "impact" of the airflow in subsequent changes in different dimensions, the existing spiral airflow spirals and rolls dynamically, and the internal and external airflows are fully exposed, allowing for thorough gas-liquid mixing with the water mist.

[0063] Furthermore, while the drive component drives the swirl plate 5 to reciprocate and swing, it also drives the atomizing disk 7 to rotate and move up and down simultaneously. On the one hand, this makes the atomizing disk 7 form a denser water mist state, and on the other hand, it makes the atomizing disk 7 respond to the changes in different dimensions of the spiral airflow, producing water mist of different dimensions. It maintains a suitable distance and height with the spiral airflow to combine gas and liquid, thereby improving the gas-liquid combination efficiency of water mist and airflow.

[0064] Furthermore, while the driving component drives the swirl plate 5 to reciprocate and swing, it also drives the filter screen plate 6 to reciprocate and swing relative to the swirl plate 5. This causes the filter screen plate 6 to swing synchronously when the direction of the airflow channel between adjacent swirl plates 5 changes, so that the filter screen plate 6 always tends to "cover" the opening of the airflow channel, pre-filtering and removing dust from the flue gas passing through the airflow channel, and reducing the intensity of subsequent atomization spray.

[0065] Then, the flue gas purified by spraying is discharged into the purification tank 2 for further purification and adsorption. The gas-liquid mixture generated by spraying falls into the filter tank 3 for filtration and purification, allowing the filtered water to be recycled.

[0066] 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 process, method, article, or apparatus.

[0067] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An environmentally friendly spraying device for purifying flue gas from a submerged arc furnace, comprising spraying purification within a spray tank (1), characterized in that, Also includes: The atomizing disc (7) is located above the spray tank (1); Swirl plate (5) is located below atomizing disc (7) and is radially distributed inside spray tank (1). An airflow channel is formed between two adjacent swirl plates (5). The flue gas is forced to guide the swirl plate (5) to revolve around the center of spray tank (1) inside the spray tank (1), so that the flue gas spirals up along the airflow channel. The filter screen (6) is located below the swirl plate (5) and the width of the filter screen (6) is sufficient to cover the airflow channel between two adjacent swirl plates (5); The corresponding swirl plate (5) and filter screen plate (6) can rotate relative to or opposite to each other with the corresponding radius of the spray tank (1) as the axis. When the swirl plate (5) rotates with the corresponding radius of the spray tank (1) as the axis, it can change its swirl angle on the flue gas. When the filter screen plate (6) rotates, it can always cover the airflow channel. A drive assembly for driving the cyclone plate (5) to rotate relative to or opposite to the filter plate (6).

2. The environmentally friendly spraying equipment for purifying flue gas from a submerged arc furnace according to claim 1, characterized in that, The swirl plate (5) has a first rotating shaft (510) on one side, and the first rotating shaft (510) is located on the radius of the spray tank (1); The filter screen plate (6) is provided with a second rotating shaft (610) on one side. The second rotating shaft (610) is rotatably installed inside the first rotating shaft (510), so that the vortex plate (5) and the filter screen plate (6) can rotate coaxially relative to each other or in opposite directions.

3. The environmentally friendly spraying equipment for purifying flue gas from a submerged arc furnace according to claim 2, characterized in that, Also includes: The rotating inner ring (23) is located in the middle of the swirl plate (5) and is used to support the swirl plate (5). The first bushing (25) is rotatably mounted inside the rotating inner ring (23), wherein the inner wall of the first bushing (25) is formed with at least one set of first grooves (2510). The second bushing (30) is slidably installed inside the first bushing (25) and has at least one set of first sliding buckles (3010) along its axial direction. The first sliding buckles (3010) can slide along the first sliding groove (2510) to convert the linear motion of the second bushing (30) into the rotational motion of the first bushing (25), so that when the first bushing (25) rotates, it drives the vortex plate (5) to rotate relative to or opposite to the filter screen plate (6).

4. The environmentally friendly spraying equipment for purifying flue gas from a submerged arc furnace according to claim 3, characterized in that, The first bushing (25) is provided with a first bevel gear ring (28) in the axial direction, and the first bushing (25) is also provided with a second bevel gear ring (29) opposite to the first bevel gear ring (28) in the axial direction. The first rotating shaft (510) has a first bevel gear (26) at one end, and the first bevel gear (26) meshes with the first bevel gear ring (28); The second rotating shaft (610) has a second bevel gear (27) at one end, which meshes with the second bevel gear ring (29).

5. An environmentally friendly spraying device for purifying flue gas from a submerged arc furnace according to claim 4, characterized in that, The driving component includes: The first drive shaft (24) passes through the axial direction of the second bushing (30), wherein the first drive shaft (24) is provided with a bearing sleeve (2410) in the axial direction, and the bearing sleeve (2410) is rotatably installed in the second bushing (30); The third bushing (32) is fixed to the bottom end of the first drive shaft (24), wherein the inner wall of the third bushing (32) is provided with at least one set of second sliding buckles (3210). The third drive shaft (36) is rotatably mounted inside the third bushing (32). The third drive shaft (36) has a second slide groove (3610) formed axially. The second slide buckle (3210) can slide along the second slide groove (3610) to convert the rotational motion of the third drive shaft (36) into the linear motion of the third bushing (32), so that the first drive shaft (24) moves back and forth, driving the swirl plate (5) and (6) to rotate relative to or opposite to each other.

6. The environmentally friendly spraying equipment for purifying flue gas from a submerged arc furnace according to claim 5, characterized in that, The driving component also includes: The second drive shaft (31) is arranged below the third bushing (32). At least one set of sliding shafts (33) is provided above the second drive shaft (31). The sliding shafts (33) are slidably connected to the third bushing (32), so that the second drive shaft (31) drives the first drive shaft (24) to rotate synchronously. The second drive shaft (31) is provided with a first gear pair (34) in the axial direction, and the third drive shaft (36) is provided with a second gear pair (35) in the axial direction. The transmission ratio of the second gear pair (35) is greater than that of the first gear pair (34), so that the speed of the third drive shaft (36) is greater than that of the second drive shaft (31), which is used to drive the first drive shaft (24) to reciprocate and rotate synchronously.

7. An environmentally friendly spraying device for purifying flue gas from a submerged arc furnace according to claim 6, characterized in that, The first drive shaft (24) is fixedly connected to the atomizing disk (7) and is used to drive the atomizing disk (7) to rotate and move up and down to generate spiral water mist of different dimensions. At the same time, a water supply structure that moves synchronously with the atomizing disk (7) is also provided on the moving path of the atomizing disk (7). The water supply structure includes: The lifting slide rail (19) is arranged on the lifting and moving path of the atomizing plate (7), and at least one set is provided. The slide table of the lifting slide rail (19) is provided with a sliding bracket (18). The flow divider (17) is fixed to one end of the sliding bracket (18), wherein the flow divider (17) is rotatably connected to the atomizing disc (7) through a shaft seal.

8. An environmentally friendly spraying device for purifying flue gas from a submerged arc furnace according to claim 7, characterized in that, Also includes; A filter tank (3) is installed at the bottom opening of the spray tank (1), and at least one packing layer (11) is provided inside the filter tank (3). A circulating water pump (4) is installed on at least one side of the filter tank (3), wherein the inlet of the circulating water pump (4) is provided with a first water pipe (410) connected to the filter tank (3), and the outlet of the circulating water pump (4) is provided with a second water pipe (420). A water supply straight pipe (16) is connected to at least one side of the distribution plate (17) and is connected to the second water pipe (420) via a water supply hose (15).

9. An environmentally friendly spraying device for purifying flue gas from a submerged arc furnace according to claim 7, characterized in that, Also includes: An overflow trough (8) is arranged on the rotation path of the swirl plate (5), wherein the overflow trough (8) is provided with at least one set of overflow pipes (9) along its circumference, and the overflow pipes (9) extend to the opening of the filter tank (3); The rotating outer ring (13) is located outside the swirl plate (5) and is used to support the swirl plate (5). The rotating outer ring (13) is provided with at least one set of scrapers (14) along its circumference. The scrapers (14) are located in the overflow groove (8).

10. An environmentally friendly spraying device for purifying flue gas from a submerged arc furnace according to claim 7, characterized in that, It also includes a purification tank (2) installed at the top opening of the spray tank (1), and the purification tank (2) has a purification layer (10) inside.

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