A wet dust removal device for iron and steel slag treatment and a method thereof

Abstract

The application discloses a kind of wet dust removal device and method for iron steel slag treatment, it is related to dust removal device technical field, including the dust removal tower of top being provided with spray opening and dust inlet;Gas film isolation mechanism is arranged in dust removal tower;Gas film isolation mechanism includes: first air jet ring and second air jet ring.The application is formed by setting gas film isolation mechanism, gas film is formed in the inner wall of dust removal tower, top gas film vertically covers the upper section of tower wall, middle gas film is inclined to cover the middle and lower section of tower wall, two layers of gas film form gas curtain barrier in tower wall, when dust enters tower with airflow, gas film blocks its direct contact with tower wall, avoids scale formation, reduces cleaning to dust removal tower, guarantees that dust removal tower is long-term and efficient use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust removal devices, in particular to a wet dust removal device for iron and steel slag treatment and a method thereof. BACKGROUND

[0002] As industrial solid waste, iron and steel slag has certain recycling value. Since iron and steel slag generally undergoes crushing, sorting and other processes in the recycling process, a large amount of dust is generated, so a special dust removal device needs to be provided. However, the existing wet dust removal device for iron and steel slag treatment still has the following defects in use:

[0003] For example, a steel slag dust removal device for steelmaking is disclosed in Chinese patent CN115555246A, which comprises a machine case, a controller, a feed pipe and a plurality of universal wheels. The controller and the feed pipe are arranged on the machine case, and the plurality of universal wheels are symmetrically arranged on the machine case. The dust removal device further comprises a screen mesh movably arranged in the machine case and elastically connected thereto; a dust removal system arranged on the machine case for removing dust in the steel slag; and a transmission module arranged between the dust removal system and the screen mesh. The dust removal system controls the movement of the screen mesh through the transmission module when it is working. The device can utilize the linkage structure to simultaneously perform dust removal and turning treatment of the steel slag, thereby realizing dust removal of the steel slag without dead angles and achieving better dust removal effect.

[0004] Since the steel slag dust is rich in alkaline oxides such as calcium oxide and magnesium oxide, it will rapidly undergo hydration reaction after contacting with water in the dust removal device, causing the inner wall surface of the dust removal device to gradually deposit and harden, forming a dense and hard scale layer. As the running time increases, the scale layer thickens, which affects the uniformity of the spraying system and eventually causes the overall performance of the dust removal device to decline. In order to ensure the dust removal effect, the existing technology generally requires periodic shutdown for mechanical scraping, chemical cleaning and other methods to clean the scale layer. However, frequent shutdown for maintenance not only increases the labor and material costs, but also affects the continuity and production efficiency of the steel slag treatment. SUMMARY

[0005] In order to overcome the above technical problems, the purpose of the present application is to provide a wet dust removal device for iron and steel slag treatment and a method thereof, which solves the problem of the existing wet dust removal device for iron and steel slag treatment that is prone to scale formation on the inner wall of the dust removal device, which requires regular treatment and affects the continuity and production efficiency of the steel slag treatment.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] A wet dust removal device for iron and steel slag treatment, comprising a dust removal tower provided with a spraying port and a dust inlet at the top; a gas film isolation mechanism is arranged in the dust removal tower; the gas film isolation mechanism comprises:

[0008] A first jet ring and a second jet ring are provided. The first jet ring is installed on the inner wall of the top of the dust collector tower. A first accumulation chamber is formed inside the first jet ring, and multiple first jet holes are formed on the first jet ring, which are connected to the first accumulation chamber. The outlet of the first jet hole is parallel to the inner wall of the dust collector tower, so that when the airflow is discharged through the first jet hole, a downward flowing air film is formed on the inner wall of the dust collector tower. The second jet ring is installed on the inner wall of the middle part of the dust collector tower. A second accumulation chamber is formed inside the second jet ring, and multiple second jet holes are formed on the second jet ring, which are connected to the second accumulation chamber. The outlet of the second jet hole is inclined to the inner wall of the dust collector tower, so that when the airflow is discharged through the second jet hole, it forms an inclined downward impact on the inner wall of the dust collector tower, thereby forming an air film on the inner wall of the dust collector tower. Multiple guide grooves are spaced apart on the second jet ring to allow the airflow to pass closely to the second jet ring and form an air film.

[0009] Preferably, the air-film isolation mechanism further includes a first air pressure control valve and a second air pressure control valve; the first air pressure control valve is installed on the first jet ring and is used to control the air pressure in the first accumulation chamber; the second air pressure control valve is installed on the second jet ring and is used to control the air pressure in the second accumulation chamber.

[0010] Preferably, a mixing mechanism is provided at the bottom of the dust removal tower; the mixing mechanism is used to generate an airflow toward the top of the dust removal tower to promote the mixing between dust and spray water.

[0011] Preferably, the mixing mechanism includes a first adjusting mechanism and a plurality of nozzles; the plurality of nozzles are disposed at the bottom of the dust removal tower; the first adjusting mechanism is installed on the dust removal tower and is used to adjust the orientation of the nozzles.

[0012] Preferably, the first adjusting mechanism includes a bushing, a first connecting shaft, a second connecting shaft, a first slider, and a driving mechanism; the bushing is fixed to the dust collector along the radial direction of the dust collector tower; the first connecting shaft is coaxially inserted into the bushing; the nozzle is rotatably connected to the bushing around the axis of the first connecting shaft and is connected to the first connecting shaft; the second connecting shaft is inserted into the bushing; one end of the second connecting shaft is sleeved on the first connecting shaft; a spiral groove is formed on the first connecting shaft; the first slider is fixed to the second connecting shaft and slidably connected to the spiral groove; the driving mechanism is installed on the dust collector tower; the other end of the second connecting shaft is connected to the driving mechanism; the driving mechanism is used to drive multiple second connecting shafts to move along their axes.

[0013] Preferably, the first adjustment mechanism further includes an air collecting pipe and a plurality of connecting pipes; the air collecting pipe is installed on the dust removal tower, one end of each connecting pipe passes through the axis of each first connecting shaft and is connected to the nozzle, and the other end of the connecting pipe is connected to the air collecting pipe; a telescopic airbag is provided on the connecting pipe at a position between the first connecting shaft and the second connecting shaft, and is used to prevent interference with the relative movement between the second connecting shaft and the first connecting shaft.

[0014] Preferably, the driving mechanism includes a rotating ring, a cylinder, multiple guide rails, a second slider, and a rotating rod; the multiple guide rails are radially fixed to the dust collector tower, the second slider is slidably connected to the guide rails, the rotating ring is coaxially sleeved on the dust collector tower, and each rotating rod is disposed between the rotating ring and each second slider; the cylinder is installed on the dust collector tower and is used to drive the rotating ring to rotate around its axis, thereby moving the second slider along the length of the guide rail.

[0015] Preferably, the first adjustment mechanism further includes a second adjustment mechanism; the second adjustment mechanism is used to adjust the angle at which the nozzle sprays air upwards.

[0016] Preferably, the second adjusting mechanism includes a rotating shaft, a driving gear, a driven gear, and a rotating sleeve; the rotating sleeve is coaxially inserted into the bushing, and a torsion spring is provided between the rotating sleeve and the bushing; the nozzle is rotatably connected to the rotating sleeve via the rotating shaft; the driven gear is fixed to the rotating shaft; one end of the first connecting shaft passes through the rotating sleeve and is coaxially connected to the driving gear, and the driven gear meshes with the driving gear.

[0017] A wet dust removal method for treating iron and steel slag, employing the aforementioned wet dust removal device for treating iron and steel slag, specifically includes the following steps:

[0018] Step 1, Top air film formation: High-pressure gas is introduced into the first jet ring. After the high-pressure gas accumulates in the first accumulation chamber, it is discharged through the first jet hole. When the high-pressure gas is ejected from the first jet hole in a vertically downward direction, due to the wall adhesion effect, the airflow will move downward close to the inner surface of the tower wall, forming an air film that isolates dust.

[0019] Step 2, Middle Air Film Formation: High-pressure gas is introduced into the second jet ring. After the high-pressure gas accumulates in the second accumulation chamber, it is discharged through the second jet hole. The gas discharged through the second jet hole is inclined to impact the inner wall of the dust removal tower, avoiding the airflow from diverging towards the center of the tower, so that it flows closely to the wall surface to form an air film that isolates dust.

[0020] The beneficial effects of this invention are:

[0021] By setting up an air film isolation mechanism, an air film is formed on the inner wall of the dust collector. The top air film vertically downwards covers the upper section of the tower wall, and the middle air film tilts downwards to cover the middle and lower sections of the tower wall. The two air films form an air curtain barrier on the tower wall. When dust enters the tower with the airflow, the air film prevents it from directly contacting the tower wall, avoiding scaling, reducing the need for cleaning the dust collector, and ensuring the long-term efficient use of the dust collector.

[0022] By setting up a mixing mechanism, an upward airflow is formed at the bottom of the dust removal tower. This airflow forms a countercurrent with the dust and spray water introduced from the top, creating a vortex rolling effect in the central area of ​​the tower. The upward airflow lifts up the fine dust that has not combined with water droplets, prolonging its residence time in the tower and improving the combination effect of dust and spray water.

[0023] By setting a second adjustment mechanism, the nozzle can be adjusted in both horizontal and vertical directions, thereby increasing the turbulence intensity of dust in the tower and significantly improving the mixing uniformity. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of the main view section structure of the present invention;

[0028] Figure 4 This is a partially cross-sectional, enlarged three-dimensional structural diagram of the first jet ring of the present invention;

[0029] Figure 5 This is the present invention. Figure 4 Enlarged structural diagram of region A in the middle;

[0030] Figure 6 This is a partially cross-sectional, enlarged three-dimensional structural diagram of the second jet ring of the present invention;

[0031] Figure 7 This is the present invention. Figure 6 Enlarged structural diagram of region B in the middle;

[0032] Figure 8 This is a three-dimensional enlarged structural schematic diagram of the hybrid mechanism of the present invention;

[0033] Figure 9 This is a three-dimensional enlarged structural diagram of a portion of the mixing mechanism of the present invention;

[0034] Figure 10 This is a three-dimensional enlarged view of a partial cross-section of the bushing of the present invention;

[0035] Figure 11 This is a partially cross-sectional, three-dimensional enlarged structural diagram of the nozzle of the present invention;

[0036] Figure 12 This is the present invention. Figure 11 Enlarged structural diagram of region C in the middle;

[0037] Figure 13 This is a flowchart of the method of the present invention.

[0038] In the diagram: 1. Dust removal tower; 2. Spray nozzle; 3. Dust inlet; 4. Air film isolation mechanism; 41. First jet ring; 411. First accumulation chamber; 412. First jet orifice; 42. First air pressure control valve; 43. Second jet ring; 431. Second accumulation chamber; 432. Second jet orifice; 433. Guide channel; 44. Second air pressure control valve; 5. Mixing mechanism; 51. Nozzle; 52. First adjusting mechanism; 521. Bushing; 52 2. First connecting shaft; 523. Second connecting shaft; 524. Spiral groove; 525. First slider; 526. Connecting pipe; 527. Air collecting pipe; 528. Drive mechanism; 5281. Guide rail; 5282. Second slider; 5283. Rotating ring; 5284. Rotating rod; 5285. Cylinder; 529. Second adjusting mechanism; 5291. Rotating shaft; 5292. Driven gear; 5293. Driven gear; 5294. Rotating sleeve. Detailed Implementation

[0039] 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.

[0040] Example 1: Please refer to Figures 1-12 A wet dust removal device for treating iron and steel slag, such as Figures 1-7As shown, a dust removal tower 1 includes a spray nozzle 2 and a dust inlet 3 at the top; an air film isolation mechanism 4 is installed inside the dust removal tower 1; the air film isolation mechanism 4 includes a first jet ring 41 and a second jet ring 43; wherein, the first jet ring 41 is installed on the inner wall of the top of the dust removal tower 1; a first accumulation chamber 411 is opened inside the first jet ring 41, and a plurality of first jet holes 412 are opened on the first jet ring 41, and the first jet holes 412 are connected to the first accumulation chamber 411; the outlet of the first jet hole 412 is arranged parallel to the inner wall of the dust removal tower 1, so that when the airflow is discharged through the first jet hole 412, it forms a convective atmosphere on the inner wall of the dust removal tower 1. A downward-flowing air film; a second jet ring 43 is installed on the inner wall of the middle part of the dust removal tower 1; a second accumulation chamber 431 is opened in the second jet ring 43, and a plurality of second jet holes 432 are opened on the second jet ring 43, and the second jet holes 432 are connected to the second accumulation chamber 431; the outlet of the second jet hole 432 is inclined to the inner wall of the dust removal tower 1, so that when the airflow is discharged through the second jet hole 432, it forms an impact on the inner wall of the dust removal tower 1 inclined downward, thereby forming an air film on the inner wall of the dust removal tower 1; a plurality of guide grooves 433 are spaced apart on the second jet ring 43, which are used to allow the airflow to pass closely to the second jet ring 43 to form an air film.

[0041] It should be noted that when the high-pressure gas is introduced into the first accumulation chamber 411, it is ejected through the first jet hole 412. Since the outlet of the first jet hole 412 is parallel to the inner wall of the dust removal tower 1 (i.e., the airflow direction is vertically downward), according to the wall adhesion effect, the high-speed airflow will flow downward closely along the inner surface of the dust removal tower 1 wall, forming an annular gas film. The outlet of the second jet hole 432 is inclined to the tower wall (e.g., at a 45° angle). When the high-pressure gas is ejected, it impacts the tower wall at an inclined downward angle. The airflow forms a shear force on the surface of the tower wall. At the same time, the airflow is guided to adhere closely to the surface of the annular body through the guide groove 433, and finally forms a middle gas film superimposed on the top gas film.

[0042] The top air film vertically downwards covers the upper section of the tower wall, while the middle air film tilts downwards to cover the lower middle section of the tower wall. The two air films form an air curtain barrier on the tower wall. When dust enters the tower with the airflow, the air film prevents it from directly contacting the tower wall, thus avoiding the reaction of CaO and MgO with water to form scale. In addition, the air film guides the dust to concentrate in the central area of ​​the tower, creating conditions for subsequent mixing of dust and water and improving the dust removal effect.

[0043] Please see Figures 1-3 The air-film isolation mechanism 4 also includes a first air pressure control valve 42 and a second air jet ring 43; the first air pressure control valve 42 is installed on the first air jet ring 41 and is used to control the air pressure in the first accumulation chamber 411; the second air pressure control valve 44 is installed on the second air jet ring 43 and is used to control the air pressure in the second accumulation chamber 431.

[0044] It should be noted that the first air pressure control valve 42 is installed on the first jet ring 41. The PID controller monitors the air pressure in the first accumulation chamber 411 in real time. A dust concentration sensor connected to the first accumulation chamber 411 can be installed. When the dust concentration sensor detects an increase in the inlet dust concentration, it automatically increases the air pressure and increases the air film flow rate to enhance the isolation effect; conversely, when the concentration decreases, the air pressure decreases to save energy.

[0045] The second air pressure control valve 44 similarly controls the air film pressure in the middle and forms a gradient pressure field with the air film at the top, causing the air film to flow downward along the tower wall and carry away trace amounts of dust; thus, the air film pressure is dynamically adjusted according to the dust concentration, maintaining the stability of the air film under high load conditions and avoiding air film rupture caused by dust impact.

[0046] Please see Figures 1-2 and Figure 8 A mixing mechanism 5 is provided at the bottom of the dust removal tower 1. The mixing mechanism 5 is used to form an airflow toward the top of the dust removal tower 1 to promote the mixing between dust and spray water. The mixing mechanism 5 includes a first adjusting mechanism 52 and a plurality of nozzles 51. The plurality of nozzles 51 are provided at the bottom of the dust removal tower 1. The first adjusting mechanism 52 is installed on the dust removal tower 1 and is used to adjust the orientation of the nozzles 51.

[0047] It should be noted that multiple nozzles 51 spray airflow (such as compressed air or circulating water atomized airflow) upward to form an upward airflow; this airflow forms a countercurrent with the dust introduced from the top, generating a vortex tumbling effect in the central area of ​​the tower.

[0048] The rising airflow lifts up fine dust particles that have not combined with water droplets, prolonging their residence time inside the tower. At the same time, they repeatedly collide with water droplets sprayed from the top in the vortex, causing the dust particles to increase in size. Eventually, they settle because gravity is greater than the airflow resistance.

[0049] To improve the mixing efficiency of dust and water, the collision frequency of dust and water droplets is increased through vortex tumbling, and particle size screening and separation are achieved, so that only particles with gravity greater than the reverse wind force settle down, achieving fine separation and preventing fine dust from escaping.

[0050] Please see Figures 8-10The first adjusting mechanism 52 includes a bushing 521, a first connecting shaft 522, a second connecting shaft 523, a first slider 525, and a driving mechanism 528. The bushing 521 is fixed to the dust removal tower 1 radially. The first connecting shaft 522 is coaxially inserted into the bushing 521. The nozzle 51 is rotatably connected to the bushing 521 around the axis of the first connecting shaft 522 and is connected to the first connecting shaft 522. The second connecting shaft 523 is inserted into the bushing 521. One end of the second connecting shaft 523 is sleeved on the first connecting shaft 522. A spiral groove 524 is provided on the first connecting shaft 522. The first slider 525 is fixed to the second connecting shaft 523 and is slidably connected to the spiral groove 524. The driving mechanism 528 is installed on the dust removal tower 1, and the other end of the second connecting shaft 523 is connected to the driving mechanism 528. The driving mechanism 528 is used to drive multiple second connecting shafts 523 to move along their axes.

[0051] It should be noted that the drive mechanism 528 pushes the second connecting shaft 523 to move along the axis, and the first slider 525 is embedded in the spiral groove 524 of the first connecting shaft 522. When the second connecting shaft 523 moves, the first slider 525 drives the first connecting shaft 522 to rotate, which in turn drives the nozzle 51 to rotate around the axis of the first connecting shaft 522. The upward spray angle of the nozzle 51 is adjusted to prevent the airflow ejected by the nozzle 51 from interfering with the air film. The direction of the nozzle 51 can also be adjusted in real time according to the dust diffusion pattern. For example, when the dust is biased to the left side of the tower, the nozzle 51 is adjusted to spray airflow to the left to enhance the local vortex intensity and improve the collection efficiency.

[0052] Furthermore, after the dust removal work is completed, the nozzle 51 can be driven to rotate downwards to form a downward airflow, which facilitates the discharge of dust particles from the bottom of the dust removal tower 1 and improves the dust removal efficiency.

[0053] Please see Figures 8-10 The first adjustment mechanism 52 also includes an air collection pipe 527 and a plurality of connecting pipes 526; the air collection pipe 527 is installed on the dust removal tower 1, one end of each connecting pipe 526 passes through the axis of each first connecting shaft 522 and is connected to the nozzle 51, and the other end of the connecting pipe 526 is connected to the air collection pipe 527; a telescopic airbag is provided on the connecting pipe 526 at a position between the first connecting shaft 522 and the second connecting shaft 523, and is used to prevent interference with the relative movement between the second connecting shaft 523 and the first connecting shaft 522.

[0054] It should be noted that by using multiple connecting pipes 526 and air collecting pipes 527 in combination, the air pressure of the air sprayed from multiple nozzles 51 is the same, ensuring the stability of the rising airflow; and by compensating through the telescopic airbag, specifically: the connecting pipe 526 passes through the axis of the first connecting shaft 522, and its telescopic airbag elastically deforms when the first connecting shaft 522 and the second connecting shaft 523 move relative to each other, avoiding pipe interference and ensuring smooth airflow delivery, that is, delivering compressed air to the nozzle 51.

[0055] Please see Figures 1-3 and Figures 8-9 It is understood that this application does not limit the specific structure and installation method of the drive mechanism 528. The following only provides a feasible technical solution: The drive mechanism 528 includes a rotating ring 5283, a cylinder 5285, multiple guide rails 5281, a second slider 5282, and a rotating rod 5284. The multiple guide rails 5281 are radially fixed to the dust removal tower 1. The second slider 5282 is slidably connected to the guide rails 5281. The rotating ring 5283 is coaxially sleeved on the dust removal tower 1, and each rotating rod 5284 is disposed between the rotating ring 5283 and each second slider 5282. The cylinder 5285 is installed on the dust removal tower 1 and is used to drive the rotating ring 5283 to rotate around its axis, so as to drive the second slider 5282 to move along the length direction of the guide rail 5281.

[0056] It should be noted that the drive mechanism 528 drives multiple nozzles 51 to move synchronously, improving motion consistency and achieving precise control. Specifically, the cylinder 5285 drives the rotating ring 5283 to rotate around its axis, which in turn causes the rotating rod 5284 to pull or push the second slider 5282 to slide on the guide rail 5281, causing the second slider 5282 to push the second connecting shaft 523 to move, thereby achieving the purpose of driving the nozzles 51 to move. This achieves synchronous driving of multiple nozzles 51, improving adjustment efficiency and consistency.

[0057] Example 2: The technical solution in this example differs from that in Example 1 in that: Please refer to... Figures 11-12 The first adjustment mechanism 52 further includes a second adjustment mechanism 529; the second adjustment mechanism 529 is used to adjust the angle of the airflow sprayed upward from the nozzle 51; the second adjustment mechanism 529 includes a rotating shaft 5291, a driving gear 5292, a driven gear 5293, and a rotating sleeve 5294; the rotating sleeve 5294 is coaxially inserted into the bushing 521, and a torsion spring is provided between the rotating sleeve 5294 and the bushing 521; the nozzle 51 is rotatably connected to the rotating sleeve 5294 through the rotating shaft 5291; the driven gear 5293 is fixed to the rotating shaft 5291; one end of the first connecting shaft 522 passes through the rotating sleeve 5294 and is coaxially connected to the driving gear 5292; and the driven gear 5293 meshes with the driving gear 5292.

[0058] It should be noted that when the second connecting shaft 523 moves along its axis, driving the first connecting shaft 522 to rotate via the first slider 525, the rotating sleeve 5294 remains stationary due to the constraint of the torsion spring. As the first connecting shaft 522 rotates, it drives the driving gear 5292 to rotate, and the driven gear 5293 meshes with the driving gear 5292, thereby driving the rotating shaft 5291 to rotate. This causes the nozzle 51 to tilt around the axis of the rotating sleeve 5294, adjusting the vertical angle. When the nozzle 51 rotates around the rotating shaft 5291 to contact the rotating sleeve 5294, the first connecting shaft 522 continues to rotate, causing the nozzle 51 and the rotating sleeve 5294 to rotate synchronously, thus adjusting the upward spray angle of the nozzle 51 or driving the nozzle 51 to spray air downwards. The torsion spring provides a restoring force, and when the drive mechanism 528 stops operating, the nozzle 51 automatically maintains the set angle.

[0059] The nozzle 51 can be adjusted in both horizontal and vertical directions to form a spiral upward airflow, which increases the turbulence intensity of dust in the tower and significantly improves the mixing uniformity. For coarse dust, the nozzle 51 tilts upward at a larger angle to increase the upward airflow velocity; for fine dust, the angle is reduced to prolong the residence time and improve the collection efficiency.

[0060] Please see Figures 1-13 A wet dust removal method for treating iron and steel slag, employing the aforementioned wet dust removal device for treating iron and steel slag, specifically includes the following steps:

[0061] Step 1, Top air film formation: High-pressure gas is introduced into the first jet ring 41. After the high-pressure gas accumulates in the first accumulation chamber 411, it is discharged through the first jet hole 412. When the high-pressure gas is ejected from the first jet hole 412 in a vertically downward direction, due to the wall adhesion effect, the airflow will move downward close to the inner surface of the tower wall, forming an air film that isolates dust.

[0062] Step 2, Middle Air Film Formation: High-pressure gas is introduced into the second jet ring 43. After the high-pressure gas accumulates in the second accumulation chamber 431, it is discharged through the second jet hole 432. The gas discharged through the second jet hole 432 is inclined to impact the inner wall of the dust removal tower 1, avoiding the airflow from diverging towards the center of the tower, so that it flows closely to the wall surface to form an air film that isolates dust.

[0063] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0064] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0065] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A wet dust removal device for iron and steel slag treatment, comprising a dust removal tower (1) provided with a spray port (2) and a dust inlet (3) at the top; characterized in that, The dust removal tower (1) is provided with an air film isolation mechanism (4); the air film isolation mechanism (4) comprises: A first air jet ring (41) is installed on the inner wall of the top of the dust removal tower (1); a first accumulation cavity (411) is formed in the first air jet ring (41); a plurality of first air jet holes (412) are formed in the first air jet ring (41) and are in communication with the first accumulation cavity (411); the outlet of the first air jet hole (412) is arranged in parallel with the inner wall of the dust removal tower (1), so that when the airflow is guided out through the first air jet hole (412), an air film flowing downward is formed on the inner wall of the dust removal tower (1); and a second air jet ring (43) is installed on the inner wall of the middle of the dust removal tower (1); a second accumulation cavity (431) is formed in the second air jet ring (43); a plurality of second air jet holes (432) are formed in the second air jet ring (43) and are in communication with the second accumulation cavity (431); the outlet of the second air jet hole (432) is arranged obliquely with the inner wall of the dust removal tower (1), so that when the airflow is guided out through the second air jet hole (432), an air film is formed on the inner wall of the dust removal tower (1); a plurality of flow guide grooves (433) are formed in the second air jet ring (43) at intervals and are used to allow the airflow to pass close to the second air jet ring (43) to form an air film; The bottom of the dust removal tower (1) is provided with a mixing mechanism (5); the mixing mechanism (5) is used to form an airflow towards the top of the dust removal tower (1) to promote the mixing of dust and spray water; The mixing mechanism (5) comprises a first adjusting mechanism (52) and a plurality of spray heads (51); a plurality of spray heads (51) are arranged at the bottom of the dust removal tower (1); the first adjusting mechanism (52) is installed on the dust removal tower (1) and is used to adjust the orientation of the spray head (51); The first adjusting mechanism (52) comprises a shaft sleeve (521), a first connecting shaft (522), a second connecting shaft (523), a first sliding block (525) and a driving mechanism (528); the shaft sleeve (521) is fixed to the dust removal tower (1) along the radial direction of the dust removal tower (1), the first connecting shaft (522) is coaxially inserted into the shaft sleeve (521), the nozzle (51) is rotationally connected to the shaft sleeve (521) around the axis of the first connecting shaft (522), and the nozzle (51) is connected to the first connecting shaft (522); the second connecting shaft (523) is inserted into the shaft sleeve (521), one end of the second connecting shaft (523) is sleeved on the first connecting shaft (522), a helical groove (524) is formed in the first connecting shaft (522), and the first sliding block (525) is fixed to the second connecting shaft (523) and is slidingly connected to the helical groove (524); the driving mechanism (528) is installed on the dust removal tower (1), and the other end of the second connecting shaft (523) is connected to the driving mechanism (528); the driving mechanism (528) is used for driving the plurality of second connecting shafts (523) to move along the axes thereof. The first adjusting mechanism (52) further comprises a gas collecting pipe (527) and a plurality of connecting pipes (526); the gas collecting pipe (527) is installed on the dust removal tower (1), one end of each connecting pipe (526) passes through the position of the axis of each first connecting shaft (522) and is connected to the nozzle (51), and the other end of the connecting pipe (526) is connected to the gas collecting pipe (527); a telescopic air bag is arranged at the position of each connecting pipe (526) between the first connecting shaft (522) and the second connecting shaft (523), and is used for preventing interference caused by relative movement between the second connecting shaft (523) and the first connecting shaft (522). The driving mechanism (528) comprises a rotating ring (5283), a gas cylinder (5285), a plurality of guide rails (5281), a second sliding block (5282) and a rotating rod (5284); the plurality of guide rails (5281) are fixed to the dust removal tower (1) along the radial direction of the dust removal tower (1), the second sliding block (5282) is slidingly connected to the guide rails (5281), the rotating ring (5283) is coaxially sleeved on the dust removal tower (1), and each rotating rod (5284) is arranged between the rotating ring (5283) and each second sliding block (5282); the gas cylinder (5285) is installed on the dust removal tower (1) and is used for driving the rotating ring (5283) to rotate around the axis thereof, so as to drive the second sliding block (5282) to move along the length direction of the guide rails (5281).

2. A wet dust removal device for iron and steel slag treatment according to claim 1, characterized in that, The gas film isolation mechanism (4) further comprises a first gas pressure control valve (42) and a second gas pressure control valve (44); the first gas pressure control valve (42) is installed on the first gas jet ring (41) and is used for controlling the gas pressure in the first accumulation cavity (411); and the second gas pressure control valve (44) is installed on the second gas jet ring (43) and is used for controlling the gas pressure in the second accumulation cavity (431).

3. A wet dust removal device for iron and steel slag treatment according to claim 1, characterized in that, The first adjusting mechanism (52) further comprises a second adjusting mechanism (529); the second adjusting mechanism (529) is used for adjusting the angle of the upwardly sprayed airflow of the spray head (51).

4. A wet dust removal device for iron and steel slag treatment according to claim 3, characterized in that, The second adjusting mechanism (529) comprises a rotating shaft (5291), a driving gear (5292), a driven gear (5293) and a rotating sleeve (5294); the rotating sleeve (5294) is coaxially inserted into the shaft sleeve (521), and a torsion spring is arranged between the rotating sleeve (5294) and the shaft sleeve (521); the spray head (51) is rotationally connected to the rotating sleeve (5294) through the rotating shaft (5291); the driven gear (5293) is fixedly arranged on the rotating shaft (5291); one end of the first connecting shaft (522) is coaxially connected with the driving gear (5292) through the rotating sleeve (5294), and the driven gear (5293) is engaged with the driving gear (5292).

5. A wet dust removal method for iron and steel slag treatment, characterized by: The wet dust removal device for iron and steel slag treatment according to any one of claims 1-4, specifically comprising the following steps: Step one, top gas film forming: high-pressure gas is introduced into the first air jet ring (41), and the high-pressure gas is accumulated in the first accumulation cavity (411) and then discharged through the first air jet hole (412); when the high-pressure gas is sprayed in a vertically downward direction from the first air jet hole (412), due to the wall attachment effect, the airflow will move downwardly along the inner surface of the tower wall to form a gas film for isolating dust; Step two, middle gas film forming: high-pressure gas is introduced into the second air jet ring (43), and the high-pressure gas is accumulated in the second accumulation cavity (431) and then discharged through the second air jet hole (432); the direction of the gas discharged through the second air jet hole (432) is inclined to impact the inner wall of the dust removal tower (1), avoiding the airflow from diverging to the center of the tower, so as to flow along the wall surface to form a gas film for isolating dust.

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