Waste gas treatment equipment convenient for dust accumulation and used for steel plant

Abstract

The invention relates to the technical field of waste gas treatment, and particularly discloses waste gas treatment equipment convenient for dust accumulation and used for a steel plant. Comprising a conical annular plate, dust screening round holes are formed in the outer side of the conical annular plate, a cross-shaped fixing plate is fixedly connected to the bottom of the conical annular plate, a driving motor is fixedly connected to the bottom of the cross-shaped fixing plate, and a driving shaft of the driving motor penetrates through the cross-shaped fixing plate and is fixedly connected with a linkage rod. A plurality of dust screening round holes are formed in a conical annular plate to screen and filter dust particles in waste gas, so that the situation that the dust particles are accumulated on a filter element for purifying the waste gas to affect the purification effect due to the fact that the dust particles in the waste gas are difficult to screen in advance when the waste gas is treated is prevented; and the conical inclined surface of the conical annular plate is arranged, so that dust particles can be conveniently guided to be concentrated and accumulated at the position, close to the arc-shaped through hole, of the bottom, and the situation that the screened and filtered dust particles are dispersed on the filter plate and are difficult to uniformly collect is prevented.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a waste gas treatment device for steel plants that facilitates dust accumulation. Background Technology

[0002] Steel plant exhaust gas is a general term for gases containing various pollutants emitted from all stages of steel production (such as sintering, ironmaking, steelmaking, and rolling). These gases include particulate matter (dust), sulfur dioxide, nitrogen oxides, carbon monoxide, volatile organic compounds (VOCs), and trace amounts of dioxins. These substances not only cause air pollution (such as acid rain, smog, and photochemical smog), but also harm the human respiratory system, cause poisoning, and even lead to cancer. Steel plant exhaust gas treatment is the process of purifying gases containing pollutants such as particulate matter, sulfur dioxide, nitrogen oxides, carbon monoxide, VOCs, and dioxins generated from all stages of steel production (sintering, ironmaking, steelmaking, and rolling) to achieve compliant emissions and reduce harm to the atmospheric environment and human health.

[0003] When treating exhaust gas, it is difficult to remove dust particles in advance, causing dust particles to accumulate on the filter element used to purify the exhaust gas, which affects the purification effect. Therefore, we have proposed an exhaust gas treatment device for steel plants that is easy to accumulate dust. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a waste gas treatment device for steel plants that facilitates dust accumulation, including a circular treatment tank. The top of the circular treatment tank is connected to an air inlet pipe, the top of the inner wall of the circular treatment tank is connected to a drainage pipe, a dust accumulation and air filtration device is fixedly connected to the inner wall of the circular treatment tank, an arc-shaped through hole is opened on the inner wall of the circular treatment tank, a dust discharge device is slidably connected to the inner wall of the arc-shaped through hole, an inner inclined ring plate is fixedly connected to the inner wall of the circular treatment tank, a liquid inlet pipe is connected to the outer side of the circular treatment tank, and a separate gas-liquid discharge device is connected to the outer side of the circular treatment tank.

[0005] The dust collection and filtration device includes a conical ring plate. The conical slope of the ring plate facilitates the concentration and accumulation of dust particles at the bottom near the arc-shaped through hole, preventing the filtered dust particles from being dispersed on the filter plate and difficult to collect uniformly. The outer side of the conical ring plate is provided with dust screening holes. By setting multiple dust screening holes on the conical ring plate, dust particles in the exhaust gas are screened and filtered out, preventing the dust particles in the exhaust gas from being difficult to screen out in advance during exhaust gas treatment, which would cause the dust particles to accumulate on the filter element used to purify the exhaust gas and affect the purification effect.

[0006] Two arc-shaped through holes are provided, and the two arc-shaped through holes are distributed on the inner wall of the circular processing tank near the dust collection and air filtration device. One side of the dust discharge device is fixedly connected to the outer side of the circular processing tank.

[0007] The outer side of the conical ring plate is fixedly connected to the inner wall of the circular treatment tank. Multiple dust screening holes are provided, and the multiple dust screening holes are distributed on the outer side of the conical ring plate.

[0008] A cross-shaped fixing plate is fixedly connected to the bottom of the conical ring plate, and a drive motor is fixedly connected to the bottom of the cross-shaped fixing plate. The drive shaft of the drive motor passes through the cross-shaped fixing plate and is fixedly connected to a linkage rod. A curved inclined plate is fixedly connected to the outside of the linkage rod. When the curved inclined plate rotates with the linkage rod, it scrapes off the dust particles attached to the surface of the conical inclined plate, preventing some of the filtered dust particles from adhering to the surface of the conical ring plate and failing to slide smoothly to the bottom and accumulating in one place. Arc-shaped spiral strips are fixedly connected to both sides of the curved inclined plate. By setting arc-shaped spiral strips between the two curved inclined plates, the dust particles in the exhaust gas are intercepted in contact, preventing a large amount of dust particles from accumulating and covering the surface of the conical ring plate when too much exhaust gas enters, thus affecting the filtration effect.

[0009] The outer side of the cross-shaped fixing plate is fixedly connected to the inner wall of the circular processing tank, and the bottom of the linkage rod is rotatably connected to the top of the cross-shaped fixing plate through a rotating bolt.

[0010] Three curved inclined plates are provided, and the three curved inclined plates are distributed on the linkage rod at the position outside the conical ring plate. Multiple arc-shaped spiral strips are provided, and the multiple arc-shaped spiral strips are respectively distributed between two curved inclined plates.

[0011] Furthermore, the dust removal device includes a concave fixed plate, with an arc-shaped sliding plate slidably connected to the inner side of the concave fixed plate. A concave limiting block is fixedly connected to the outer side of the arc-shaped sliding plate. By setting the concave limiting block on the outer side of the arc-shaped sliding plate, the rotation angle of the bottom corner plate is limited, preventing the bottom corner plate from rotating back to a horizontal state when it moves with the fixed block, thus ensuring effective discharge of dust particles. A fixed strip is fixedly connected to one side of the arc-shaped sliding plate, and the bottom of the fixed strip is rotatably connected to the bottom corner plate via a rotating bolt. As the fixed strip moves, the bottom corner plate pushes the dust particles accumulated in the arc-shaped through hole outward along the inclined surface of the bottom corner plate, preventing the accumulation of too much dust particles in the arc-shaped through hole from being difficult to handle in a timely manner. To improve exhaust gas filtration, the bottom corner plate has a top-opening circular groove. A connecting rod is rotatably connected to the bottom of the inner wall of the top-opening circular groove via a rotating bolt. A rotary spring is fixedly connected to the bottom of the inner wall of the top-opening circular groove. The elastic connection between the return spring and the bottom corner plate facilitates angle adjustment of the bottom corner plate to open and close the arc-shaped through-hole and for cleaning. This prevents the cleaning of accumulated dust particles on the inner wall of the arc-shaped through-hole from being too cumbersome and affecting exhaust gas treatment efficiency. One side of the concave fixing plate is fixedly connected to the outer side of the circular treatment tank. The top of the fixing block is slidably connected to the inner wall of the arc-shaped through-hole. The top of the connecting rod is fixedly connected to the bottom of the fixing block. The top of the rotary spring is fixedly connected to the bottom of the fixing block.

[0012] Furthermore, the separate gas-liquid discharge device includes an arc-shaped exhaust pipe, one side of which is connected to an annular connecting plate. By setting the annular connecting plate between the arc-shaped exhaust pipe and the arc-shaped connecting gas pipe, the gas and absorbent flow within the annular connecting plate, preventing some waste gas or absorbent from overflowing from the side of the arc-shaped exhaust pipe or arc-shaped drain pipe during switching between waste gas and absorbent discharge, thus preventing difficult handling. An arc-shaped drain pipe is connected to the side of the annular connecting plate closest to the arc-shaped exhaust pipe. An inner open-ring groove is formed on the inner side of the annular connecting plate. A notched circular plate is rotatably connected to the inner wall of the inner open-ring groove via a bearing. The arc-shaped notched area of ​​the notched circular plate facilitates the separate discharge of waste gas and absorbent, preventing difficulties in effectively separating waste gas and absorbent when discharge is required, thus ensuring treatment efficiency. A circular handle is fixedly connected to one side of the notched circular plate, and a side circular handle is fixedly connected to the side of the notched circular plate away from the circular handle. A vertical sleeve rod is rotatably connected to the outer side of the side round rod. The vertical sleeve rod is used to limit the missing circular plate by setting the vertical sleeve rod between the arc-shaped exhaust pipe and the arc-shaped drain pipe, preventing the missing circular plate from shaking locally during rotation and causing some waste gas or absorbent to leak out from the inner circular groove. The side of the annular connecting plate away from the arc-shaped exhaust pipe is connected to the arc-shaped connecting gas pipe, and the side of the annular connecting plate away from the arc-shaped drain pipe is connected to the arc-shaped connecting liquid pipe. The side of the arc-shaped exhaust pipe away from the annular connecting plate is connected to the outer side of the circular treatment tank, and the side of the arc-shaped drain pipe away from the annular connecting plate is connected to the outer side of the circular treatment tank. The annular connecting plate is an annular plate with an arc-shaped hole on its surface. The missing circular plate is a circular plate with a missing arc-shaped area on its outer side. The top of the vertical sleeve rod is fixedly connected to the inner side of the arc-shaped exhaust pipe, and the bottom of the vertical sleeve rod is fixedly connected to the inner side of the arc-shaped drain pipe.

[0013] This invention provides a waste gas treatment device for steel plants that facilitates dust accumulation. It has the following beneficial effects:

[0014] 1. This waste gas treatment equipment for steel plants, which facilitates dust accumulation, uses multiple dust-screening holes on a conical ring plate to filter dust particles in the waste gas. This prevents dust particles from accumulating on the filter element used for purifying the waste gas and affecting the purification effect. As the fixed blocks move, the bottom corner plate pushes the dust particles accumulated in the arc-shaped through holes outward along the slope of the bottom corner plate, preventing excessive accumulation of dust particles in the arc-shaped through holes from affecting the timely filtration of the waste gas. The arc-shaped missing area of ​​the missing plate facilitates the separate discharge of waste gas and absorbent, preventing difficulties in effectively separating waste gas and absorbent when discharge is required, thus ensuring the treatment effect.

[0015] 2. This waste gas treatment equipment for steel plants, designed for easy dust collection, is equipped with a dust collection and filtration device. Multiple dust-screening holes are set on a conical ring plate to screen and filter dust particles in the waste gas. This prevents dust particles from accumulating on the filter element and affecting the purification effect, which would otherwise be difficult to remove in advance. The conical slope of the ring plate guides dust particles to accumulate at the bottom near the arc-shaped through-holes, preventing filtered dust particles from being scattered on the filter plate and difficult to collect uniformly. As the curved inclined plate rotates with the linkage rod, it scrapes off the dust particles adhering to the surface of the conical inclined plate, preventing some filtered dust particles from adhering to the surface of the ring plate and accumulating at the bottom. An arc-shaped spiral strip is set between two curved inclined plates to intercept dust particles in the waste gas through contact, preventing a large amount of dust particles from accumulating on the surface of the conical ring plate and affecting the filtration effect when too much waste gas enters.

[0016] 3. This waste gas treatment equipment for steel plants, which facilitates dust accumulation, is equipped with a dust removal device. As the fixed block moves, the bottom corner plate pushes the dust particles accumulated in the arc-shaped through hole outward along the inclined surface of the bottom corner plate. This prevents excessive accumulation of dust particles in the arc-shaped through hole from affecting timely treatment and thus the filtration of waste gas. A concave limiting block is set on the outside of the arc-shaped sliding plate to limit the rotation angle of the bottom corner plate, preventing the bottom corner plate from rotating back to a horizontal state when moving with the fixed block, which would make it difficult to effectively discharge dust particles. The elastic connection between the return spring and the bottom corner plate facilitates the adjustment of the bottom corner plate to open, close, and clean the arc-shaped through hole. This prevents the cleaning process from being too cumbersome and affecting the efficiency of waste gas treatment.

[0017] 4. This waste gas treatment equipment for steel plants, which facilitates dust accumulation, is equipped with a separate gas-liquid discharge device. The arc-shaped notch area of ​​the notched circular plate facilitates the separate discharge of waste gas and absorbent, preventing difficulties in effectively separating the waste gas and absorbent when discharge is required, thus ensuring treatment efficiency. A vertical sleeve is installed between the arc-shaped exhaust pipe and the arc-shaped drain pipe to limit the notched circular plate, preventing local shaking during rotation that could cause some waste gas or absorbent to leak from the inner opening groove. An annular connecting plate is installed between the arc-shaped exhaust pipe and the arc-shaped connecting gas pipe, allowing gas and absorbent to flow within the annular connecting plate. This prevents some waste gas or absorbent from overflowing from the side of the arc-shaped exhaust pipe or the arc-shaped drain pipe during switching discharge, thus preventing difficult treatment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the waste gas treatment equipment of the present invention;

[0019] Figure 2This is a schematic diagram of the bottom side section of the waste gas treatment equipment of the present invention;

[0020] Figure 3 This is a schematic diagram of the bottom structure of the dust collection and air filtration device of the present invention;

[0021] Figure 4 This is a schematic diagram of the dust collection and air filtration device of the present invention;

[0022] Figure 5 This is a schematic diagram of the dust removal device of the present invention;

[0023] Figure 6 This is a partial side sectional view of the dust removal device of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the gas-liquid separation discharge device of the present invention;

[0025] Figure 8 This is a partial side-sectional structural diagram of the gas-liquid separation discharge device of the present invention.

[0026] In the diagram: 1. Circular processing tank; 2. Air inlet pipe; 3. Drain pipe; 4. Dust collection and filtration device; 5. Arc-shaped through hole; 6. Dust removal device; 7. Inner inclined ring plate; 8. Liquid inlet pipe; 9. Separate gas-liquid discharge device; 401. Conical ring plate; 402. Dust screening hole; 403. Cross-shaped fixing plate; 404. Drive motor; 405. Linkage rod; 406. Curved inclined plate; 407. Arc-shaped spiral strip; 601. Concave fixing plate; 602. Arc-shaped slide... Plate; 603, concave limiting block; 604, fixing strip; 605, bottom corner plate; 606, top opening circular groove; 607, docking circular rod; 608, rotary spring; 901, arc-shaped exhaust pipe; 902, annular connecting plate; 903, arc-shaped drain pipe; 904, inner opening annular groove; 905, missing block circular plate; 906, circular gripping rod; 907, side circular rod; 908, vertical sleeve rod; 909, arc-shaped docking air pipe; 910, arc-shaped docking liquid pipe. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-4This invention provides a waste gas treatment device for steelmaking plants that facilitates dust accumulation, including a circular treatment tank 1. The top of the circular treatment tank 1 is connected to an air inlet pipe 2, the top of the inner wall of the circular treatment tank 1 is connected to a drainage pipe 3, the inner wall of the circular treatment tank 1 is fixedly connected to a dust accumulation and air filtration device 4, the inner wall of the circular treatment tank 1 has an arc-shaped through hole 5, the inner wall of the arc-shaped through hole 5 is slidably connected to a dust discharge device 6, the inner wall of the circular treatment tank 1 is fixedly connected to an inner inclined ring plate 7, the outer side of the circular treatment tank 1 is connected to a liquid inlet pipe 8, and the outer side of the circular treatment tank 1 is connected to a separate gas-liquid discharge device 9.

[0029] The dust collection and air filtration device 4 includes a conical ring plate 401, and a dust screening hole 402 is provided on the outer side of the conical ring plate 401.

[0030] Two arc-shaped through holes 5 are provided, and the two arc-shaped through holes 5 are distributed on the inner wall of the circular treatment tank 1 near the dust accumulation and air filtration device 4. One side of the dust discharge device 6 is fixedly connected to the outer side of the circular treatment tank 1.

[0031] The outer side of the conical ring plate 401 is fixedly connected to the inner wall of the circular treatment tank 1. Multiple dust screening holes 402 are provided, and the multiple dust screening holes 402 are distributed on the outer side of the conical ring plate 401.

[0032] A cross-shaped fixing plate 403 is fixedly connected to the bottom of the conical ring plate 401. A drive motor 404 is fixedly connected to the bottom of the cross-shaped fixing plate 403. The drive shaft of the drive motor 404 passes through the cross-shaped fixing plate 403 and is fixedly connected to a linkage rod 405. A curved inclined plate 406 is fixedly connected to the outside of the linkage rod 405. Arc-shaped spiral strips 407 are fixedly connected to both sides of the curved inclined plate 406.

[0033] The outer side of the cross-shaped fixing plate 403 is fixedly connected to the inner wall of the circular processing tank 1, and the bottom of the linkage rod 405 is rotatably connected to the top of the cross-shaped fixing plate 403 through a rotating bolt.

[0034] Three curved inclined plates 406 are provided, and the three curved inclined plates 406 are distributed on the linkage rod 405 at the outer position of the conical ring plate 401. Multiple arc-shaped spiral strips 407 are provided, and the multiple arc-shaped spiral strips 407 are distributed between two curved inclined plates 406 respectively. In use, the exhaust gas is introduced into the diversion pipe 3 from the intake pipe 2. The exhaust gas discharged from the diversion pipe 3 enters the circular treatment tank 1 and first contacts the dust collection and filtration device 4 before spreading outwards. The dust collection and filtration device 4 removes dust particles from the exhaust gas and discharges the removed dust into the arc-shaped through hole 5. When too much dust particles accumulate in the arc-shaped through hole 5, the filling of exhaust gas into the circular treatment tank 1 is stopped, and the dust in the arc-shaped through hole 5 is discharged through the dust discharge device 6. After the dust in the arc-shaped through hole 5 is cleaned, it is discharged through the dust discharge device 6. The arc-shaped through hole 5 is sealed, and waste gas is injected into the circular treatment tank 1 again. The waste gas, after being screened by the dust filtration device 4 to remove dust particles, flows downward and contacts the inner inclined ring plate 7. It flows in a converging manner along the inclined surface of the inner inclined ring plate 7 towards the center. The waste gas passing through the inner inclined ring plate 7 comes into contact with the absorbent at the bottom of the inner wall of the circular treatment tank 1 and is purified. The purified waste gas is discharged to the outside through the separation gas-liquid discharge device 9. When the absorbent has been used for a long time, the exhaust hole can be sealed through the separation gas-liquid discharge device 9, so that the separation gas-liquid discharge device 9 is connected to the drain hole to discharge the reacted absorbent to the outside. After the absorbent is discharged, the separation gas-liquid discharge device 9 can be switched back to the state of being connected to the exhaust hole. At the same time, the absorbent can be added back into the circular treatment tank 1 through the liquid inlet pipe 8.

[0035] The exhaust gas discharged from the drain pipe 3 comes into contact with the conical ring plate 401 and is filtered by the dust-screening holes 402 to remove dust particles before continuing to flow downwards. Multiple dust-screening holes 402 are provided on the conical ring plate 401 to filter dust particles in the exhaust gas. The dust particles filtered out by the dust-screening holes 402 remain on the surface of the conical ring plate 401 and are blown along the surface of the conical ring plate 401 as the exhaust gas continues to flow in, eventually accumulating near the arc-shaped through hole 5. The conical slope of the conical ring plate 401 facilitates the concentration of dust particles at the bottom near the arc-shaped through hole 5. Simultaneously, the drive motor 404 is activated, driving the linkage rod 405. The rotation of the linkage rod 405 causes the outer curved inclined plate 406 to rotate. As the curved inclined plate 406 rotates with the linkage rod 405, it scrapes off the dust particles attached to the surface of the conical inclined plate. The rotation of the curved inclined plate 406 also causes the outer arc-shaped spiral strip 407 to rotate together. The arc-shaped spiral strip 407, which rotates with the linkage rod 405, is in constant contact with the dust particles in the exhaust gas. By setting the arc-shaped spiral strip 407 between the two curved inclined plates 406, the dust particles in the exhaust gas are intercepted through contact. As the curved inclined plate 406 rotates with the linkage rod 405, the dust particles that are concentrated and accumulated on the outer side of the conical inclined plate near the bottom are discharged into the arc-shaped through hole 5.

[0036] Please see Figures 1-8 This invention provides a waste gas treatment device for steelmaking plants that facilitates dust accumulation: the dust removal device 6 includes a concave fixing plate 601, an arc-shaped sliding plate 602 slidably connected to the inner side of the concave fixing plate 601, a concave limiting block 603 fixedly connected to the outer side of the arc-shaped sliding plate 602, a fixing strip 604 fixedly connected to one side of the arc-shaped sliding plate 602, and a bottom corner plate 605 rotatably connected to the bottom of the fixing strip 604 via a rotating bolt. The top of the bottom corner plate 605 has a top-opening circular groove 606. The bottom of the inner wall of the opening circular groove 606 is rotatably connected to the docking rod 607 by a rotating bolt. The bottom of the inner wall of the opening circular groove 606 is fixedly connected to the rotary spring 608. One side of the concave fixing plate 601 is fixedly connected to the outer side of the circular processing tank 1. The top of the fixing block 604 is slidably connected to the inner wall of the arc-shaped through hole 5. The top of the docking rod 607 is fixedly connected to the bottom of the fixing block 604. The top of the rotary spring 608 is fixedly connected to the bottom of the fixing block 604.

[0037] The separate gas-liquid discharge device 9 includes an arc-shaped exhaust pipe 901. One side of the arc-shaped exhaust pipe 901 is connected to an annular connecting plate 902. The side of the annular connecting plate 902 closest to the arc-shaped exhaust pipe 901 is connected to an arc-shaped discharge pipe 903. An inner open annular groove 904 is formed on the inner side of the annular connecting plate 902. A notched circular plate 905 is rotatably connected to the inner wall of the inner open annular groove 904 via a bearing. A circular handle 906 is fixedly connected to one side of the notched circular plate 905. A side circular rod 907 is fixedly connected to the side of the notched circular plate 905 away from the circular handle 906. A vertical sleeve rod 908 is sleeved and rotatably connected to the outer side of the side circular rod 907. An arc-shaped connecting gas pipe 909 is connected to the side of the annular connecting plate 902 away from the arc-shaped exhaust pipe 901. An arc-shaped connecting pipe 910 is connected to the side of the annular connecting plate 902 away from the arc-shaped drain pipe 903. An arc-shaped exhaust pipe 901 is connected to the outside of the circular treatment tank 1 on the side away from the annular connecting plate 902. The arc-shaped drain pipe 903 is also connected to the outside of the circular treatment tank 1 on the side away from the annular connecting plate 902. The annular connecting plate 902 is an annular plate with an arc-shaped hole on its surface. The missing circular plate 905 is a circular plate with a missing arc-shaped area on its outer side. The top of the vertical sleeve 908 is fixedly connected to the inside of the arc-shaped exhaust pipe 901, and the bottom of the vertical sleeve 908 is fixedly connected to the inside of the arc-shaped drain pipe 903. During use, when too much dust particles accumulate in the arc-shaped through hole 5, the discharge is initiated from the side away from the concave limit. One side of block 603 pulls the curved slide plate 602 to slide. When the curved slide plate 602 slides, it drives the fixed strip 604 on one side to move. When the fixed strip 604 moves, it drives the bottom corner plate 605 to move together. As the fixed strip 604 moves, the bottom corner plate 605, affected by the rotational force of the rotary spring 608, rotates around the docking rod 607 in a direction away from the curved slide plate 602 until the bottom corner plate 605 rotates to contact the concave limiting block 603 and stops. At this time, the bottom corner plate 605 continues to move with the fixed strip 604. When the bottom corner plate 605 moves, it pushes the accumulated dust particles outward from the hollow area between the bottom corner plate 605 and the curved slide plate 602. The bottom corner plate 605 pushes the dust particles accumulated in the arc-shaped through hole 5 outward along the inclined surface of the bottom corner plate 605. The rotation angle of the bottom corner plate 605 is limited by the concave limiting block 603 set on the outside of the arc-shaped sliding plate 602. After the dust particles in the arc-shaped through hole 5 are cleaned, the arc-shaped sliding plate 602 is pushed back and moves the bottom corner plate 605 together. When the bottom corner plate 605 contacts the inner wall of the arc-shaped through hole 5 as the arc-shaped sliding plate 602 moves back, it is pushed and rotates around the docking round rod 607 towards the arc-shaped sliding plate 602 until the bottom corner plate 605 stops rotating when it contacts the arc-shaped sliding plate 602. At this time, the bottom corner plate 605 and the arc-shaped sliding plate 602 cover and seal the arc-shaped through hole 5.The elastic connection between the return spring and the bottom corner plate 605 facilitates the adjustment of the angle of the bottom corner plate 605 to open, close, and clean the arc-shaped through hole 5. The exhaust gas, which gathers towards the center in contact with the inner inclined ring plate 7, is purified after contact with the absorbent and then enters the arc-shaped exhaust pipe 901 through the exhaust hole, passes through the annular connecting plate 902, and enters the arc-shaped docking gas pipe 909 to be discharged outwards. When the absorbent needs to be replaced after prolonged use, the missing part of the circular plate 905 is aligned with the arc-shaped drain pipe 903 by rotating the circular handle 906. The absorbent at the bottom of the inner wall of the tank 1 can pass through the arc-shaped drain pipe 903 and the annular connecting plate 902, and be discharged outward from the arc-shaped docking pipe 910. The arc-shaped notched area of ​​the notched circular plate 905 facilitates the separate discharge of waste gas and absorbent. A vertical sleeve 908 is installed between the arc-shaped exhaust pipe 901 and the arc-shaped drain pipe 903 to limit the notched circular plate 905. The annular connecting plate 902 is installed between the arc-shaped exhaust pipe 901 and the arc-shaped docking pipe 909 to allow gas and absorbent to flow within the annular connecting plate 902.

[0038] In operation, the waste gas is introduced into the drain pipe 3 through the inlet pipe 2. The waste gas discharged from the drain pipe 3 enters the circular treatment tank 1 and first contacts the dust collection and filtration device 4 before spreading outwards. The dust collection and filtration device 4 filters out dust particles in the waste gas and discharges the filtered dust into the arc-shaped through hole 5. When too much dust particles accumulate in the arc-shaped through hole 5, the filling of waste gas into the circular treatment tank 1 is stopped, and the dust in the arc-shaped through hole 5 is discharged through the dust removal device 6. After the dust in the arc-shaped through hole 5 is cleaned, the arc-shaped through hole 5 is sealed through the dust removal device 6, and waste gas is filled into the circular treatment tank 1 again, passing through the dust collection and filtration device 4 to filter out dust particles. The exhaust gas flows downward and contacts the inner inclined ring plate 7. It flows in a converging manner along the inclined surface of the inner inclined ring plate 7 towards the center. The exhaust gas passing through the inner inclined ring plate 7 comes into contact with the absorbent at the bottom of the inner wall of the circular treatment tank 1 and is purified. The purified exhaust gas is discharged to the outside through the separation gas-liquid discharge device 9. When the absorbent has been used for a long time, the exhaust port can be blocked through the separation gas-liquid discharge device 9, so that the separation gas-liquid discharge device 9 is connected to the drain port to discharge the reacted absorbent to the outside. After the absorbent is discharged, the separation gas-liquid discharge device 9 can be switched back to the state of being connected to the exhaust port. At the same time, the absorbent can be added back into the circular treatment tank 1 through the liquid inlet pipe 8.

[0039] The exhaust gas discharged from the drain pipe 3 comes into contact with the conical ring plate 401 and is filtered by the dust-screening holes 402 to remove dust particles before continuing to flow downwards. Multiple dust-screening holes 402 on the conical ring plate 401 are used to filter dust particles in the exhaust gas. The dust particles filtered out by the dust-screening holes 402 remain on the surface of the conical ring plate 401 and are blown along its surface as the exhaust gas continues to flow in, eventually accumulating near the arc-shaped through hole 5. The conical slope of the conical ring plate 401 facilitates the concentration of dust particles at the bottom near the arc-shaped through hole 5. Simultaneously, the drive motor 404 is activated, causing the linkage rod 405 to rotate. The rotation of the linkage rod 405 causes the outer curved inclined plate 406 to rotate. When the curved inclined plate 406 rotates with the linkage rod 405, it scrapes off the dust particles attached to the surface of the conical inclined plate. The curved inclined plate 406 also drives the outer arc-shaped spiral strip 407 to rotate together with the linkage rod 405. The arc-shaped spiral strip 407, rotating with the linkage rod 405, is constantly in contact with the dust particles in the exhaust gas. By setting the arc-shaped spiral strip 407 between the two curved inclined plates 406, the dust particles in the exhaust gas are intercepted through contact. When the curved inclined plate 406 rotates with the linkage rod 405, the dust particles accumulated on the outer side of the conical inclined plate near the bottom are discharged into the arc-shaped through hole 5. When too many dust particles accumulate in the arc-shaped through hole 5, the arc-shaped sliding plate 602 is pulled from the side away from the concave limiting block 603. 02 When sliding, it moves the fixed strip 604 on one side, which in turn moves the bottom corner plate 605. As the fixed strip 604 moves, the bottom corner plate 605, under the influence of the rotational force of the rotary spring 608, rotates around the connecting rod 607 in a direction away from the arc-shaped sliding plate 602 until it stops when it contacts the concave limiting block 603. At this time, the bottom corner plate 605 continues to move with the fixed strip 604. When the bottom corner plate 605 moves, it pushes the accumulated dust particles outward from the hollow area between the bottom corner plate 605 and the arc-shaped sliding plate 602. As the fixed strip 604 moves, the bottom corner plate 605 pushes the dust particles accumulated in the arc-shaped through hole 5 along the slope of the bottom corner plate 605. Facing outwards, a concave limiting block 603 is set on the outside of the arc-shaped sliding plate 602 to limit the rotation angle of the bottom corner plate 605. After the dust particles in the arc-shaped through hole 5 are cleaned, the arc-shaped sliding plate 602 is pushed back, causing the bottom corner plate 605 to move together. As the arc-shaped sliding plate 602 moves back, the bottom corner plate 605 contacts the inner wall of the arc-shaped through hole 5 and is pushed around the docking rod 607 towards the arc-shaped sliding plate 602 until the bottom corner plate 605 stops rotating when it contacts the arc-shaped sliding plate 602. At this time, the bottom corner plate 605 and the arc-shaped sliding plate 602 cover and seal the arc-shaped through hole 5. The elastic connection between the return spring and the bottom corner plate 605 facilitates the adjustment of the angle of the bottom corner plate 605 to open, close and clean the arc-shaped through hole 5.The exhaust gas, which gathers towards the center in contact with the inner inclined ring plate 7, is purified after contact with the absorbent and then enters the arc-shaped exhaust pipe 901 through the exhaust port, passes through the annular connecting plate 902, and enters the arc-shaped docking gas pipe 909 to be discharged outward. When the absorbent needs to be replaced after a long period of use, the missing part of the circular plate 905 is rotated by the circular handle 906 so that the missing part of the circular plate 905 is aligned with the arc-shaped drain pipe 903. At this time, the absorbent at the bottom of the inner wall of the circular treatment tank 1 can then pass through the arc-shaped drain pipe 903. The gas passes through the annular connecting plate 902 and exits outward from the arc-shaped docking liquid pipe 910. The arc-shaped notch area of ​​the notched circular plate 905 facilitates the separate discharge of waste gas and absorbent. A vertical sleeve 908 is installed between the arc-shaped exhaust pipe 901 and the arc-shaped liquid discharge pipe 903 to limit the notched circular plate 905. The annular connecting plate 902, installed between the arc-shaped exhaust pipe 901 and the arc-shaped docking gas pipe 909, allows the gas and absorbent to flow within the annular connecting plate 902.

[0040] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A waste gas treatment device for steel plants that facilitates dust accumulation, comprising a circular treatment tank (1), characterized in that: The top of the circular processing tank (1) is connected to an air inlet pipe (2), the top of the inner wall of the circular processing tank (1) is connected to a drainage pipe (3), the inner wall of the circular processing tank (1) is fixedly connected to a dust collection and air filtration device (4), the inner wall of the circular processing tank (1) is provided with an arc-shaped through hole (5), the inner wall of the arc-shaped through hole (5) is slidably connected to a dust discharge device (6), the inner wall of the circular processing tank (1) is fixedly connected to an inner inclined ring plate (7), the outer side of the circular processing tank (1) is connected to a liquid inlet pipe (8), and the outer side of the circular processing tank (1) is connected to a separate gas-liquid discharge device (9). The dust collection and air filtration device (4) includes a conical ring plate (401), and a dust screening hole (402) is provided on the outer side of the conical ring plate (401).

2. The waste gas treatment equipment for steel plants that facilitates dust accumulation according to claim 1, characterized in that: Two arc-shaped through holes (5) are provided, and the two arc-shaped through holes (5) are distributed on the inner wall of the circular processing tank (1) near the dust accumulation and air filtration device (4). One side of the dust discharge device (6) is fixedly connected to the outer side of the circular processing tank (1).

3. The waste gas treatment equipment for steel plants that facilitates dust accumulation according to claim 1, characterized in that: The outer side of the conical ring plate (401) is fixedly connected to the inner wall of the circular treatment tank (1). Multiple dust screening holes (402) are provided, and the multiple dust screening holes (402) are distributed on the outer side of the conical ring plate (401).

4. The waste gas treatment equipment for steel plants that facilitates dust accumulation according to claim 1, characterized in that: A cross-shaped fixing plate (403) is fixedly connected to the bottom of the conical ring plate (401). A drive motor (404) is fixedly connected to the bottom of the cross-shaped fixing plate (403). The drive shaft of the drive motor (404) passes through the cross-shaped fixing plate (403) and is fixedly connected to a linkage rod (405). A curved inclined plate (406) is fixedly connected to the outside of the linkage rod (405). Arc-shaped spiral strips (407) are fixedly connected to both sides of the curved inclined plate (406).

5. The waste gas treatment equipment for steel plants that facilitates dust accumulation according to claim 4, characterized in that: The outer side of the cross-shaped fixing plate (403) is fixedly connected to the inner wall of the circular processing tank (1), and the bottom of the linkage rod (405) is rotatably connected to the top of the cross-shaped fixing plate (403) through a rotating bolt.

6. The waste gas treatment equipment for steel plants that facilitates dust accumulation according to claim 4, characterized in that: Three curved inclined plates (406) are provided, and the three curved inclined plates (406) are distributed on the linkage rod (405) at the position outside the conical ring plate (401). Multiple arc-shaped spiral strips (407) are provided, and the multiple arc-shaped spiral strips (407) are respectively distributed between two curved inclined plates (406).

7. The waste gas treatment equipment for steel plants that facilitates dust accumulation according to claim 1, characterized in that: The dust removal device (6) includes a concave fixing plate (601), an arc-shaped sliding plate (602) is slidably connected to the inner side of the concave fixing plate (601), a concave limiting block (603) is fixedly connected to the outer side of the arc-shaped sliding plate (602), a fixing strip (604) is fixedly connected to one side of the arc-shaped sliding plate (602), a bottom corner plate (605) is rotatably connected to the bottom of the fixing strip (604) by a rotating bolt, a top opening circular groove (606) is provided on the top of the bottom corner plate (605), a connecting rod (607) is rotatably connected to the bottom of the inner wall of the top opening circular groove (606) by a rotating bolt, and a rotary spring (608) is fixedly connected to the bottom of the inner wall of the top opening circular groove (606).

8. The waste gas treatment equipment for steel plants that facilitates dust accumulation according to claim 7, characterized in that: One side of the concave fixing plate (601) is fixedly connected to the outside of the circular processing tank (1), the top of the fixing block (604) is slidably connected to the inner wall of the arc-shaped through hole (5), the top of the docking round rod (607) is fixedly connected to the bottom of the fixing block (604), and the top of the rotary spring (608) is fixedly connected to the bottom of the fixing block (604).

9. The waste gas treatment equipment for steel plants that facilitates dust accumulation according to claim 1, characterized in that: The separate gas-liquid discharge device (9) includes an arc-shaped exhaust pipe (901), one side of which is connected to an annular connecting plate (902). An arc-shaped drain pipe (903) is connected to the side of the annular connecting plate (902) near the arc-shaped exhaust pipe (901). An inner open annular groove (904) is formed on the inner side of the annular connecting plate (902). A notched circular plate (905) is rotatably connected to the inner wall of the inner open annular groove (904) via a bearing. A circular gripping rod (906) is fixedly connected to one side. A side circular rod (907) is fixedly connected to the side of the missing circular plate (905) away from the circular gripping rod (906). A vertical sleeve rod (908) is sleeved and rotatably connected to the outside of the side circular rod (907). An arc-shaped connecting pipe (909) is connected to the side of the annular connecting plate (902) away from the arc-shaped exhaust pipe (901). An arc-shaped connecting liquid pipe (910) is connected to the side of the annular connecting plate (902) away from the arc-shaped drain pipe (903).

10. A waste gas treatment device for steel plants that facilitates dust accumulation according to claim 9, characterized in that: The side of the arc-shaped exhaust pipe (901) away from the annular connecting plate (902) is connected to the outside of the circular treatment tank (1). The side of the arc-shaped drain pipe (903) away from the annular connecting plate (902) is connected to the outside of the circular treatment tank (1). The annular connecting plate (902) is configured as an annular plate with an arc-shaped hole on its surface. The missing circular plate (905) is configured as a circular plate with a missing arc-shaped area on its outer side. The top of the vertical sleeve (908) is fixedly connected to the inside of the arc-shaped exhaust pipe (901). The bottom of the vertical sleeve (908) is fixedly connected to the inside of the arc-shaped drain pipe (903).

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