Steelmaking waste gas treatment device

Abstract

The present invention belongs to the field of waste gas treatment, and provides a steelmaking waste gas treatment device, including a box body, a partition is fixedly connected to the inside of the box body, the partition divides the inside of the box body into a dust filter chamber and a waste gas treatment chamber, and an air inlet pipe connected to the dust filter chamber is arranged on the side of the box body, and a protrusion is fixedly connected to the side of the partition close to the dust filter chamber. The present invention provides a dust cleaning mechanism, and uses the waste gas flow as a power to scrape the dust on the filter plate to avoid clogging of the filter plate; by providing a storage bin and a feeding mechanism, in the process of waste gas treatment, quicklime is added to the lime water all the time to maintain the concentration of the lime water, thereby improving the treatment effect and treatment efficiency of the waste gas. At the same time, since sulfur dioxide, hydrogen sulfide and carbon dioxide will generate water when reacting with lime water, the total amount of water in the treatment box remains unchanged, and the water resources in the treatment box can be recycled to avoid wasting water resources.

Description

Technical Field

[0001] The invention belongs to the field of waste gas treatment, and in particular relates to a steelmaking waste gas treatment device. Background Art

[0002] Steelmaking refers to controlling carbon content, eliminating harmful elements such as P, S, O, and N, retaining or increasing beneficial elements such as Si, Mn, Ni, and Cr, and adjusting the ratio between elements to obtain the best performance. Putting pig iron for steelmaking into a steelmaking furnace and smelting it according to a certain process will produce steel. During the steelmaking process, waste gas will be generated. These waste gases contain various toxic and harmful gases, which mainly include pollutants such as dust, carbon dioxide, nitrogen, sulfur dioxide, and hydrogen sulfide. Before discharge, these waste gases need to be treated before they can be discharged into the air.

[0003] In the process of exhaust gas treatment, the dust is generally filtered first, and then chemical solutions are used to purify and absorb toxic and harmful gases. Since the dust is mostly iron oxide smoke, it has small particle size and strong adsorption capacity, and is very easy to adsorb onto the filter plate, clogging the filter plate and reducing the dust filtration efficiency. Considering practicality and economy, the harmful gases in the exhaust gas are generally treated by spraying lime water, and the treated lime water will be discharged, but this method requires a large amount of water resources, which is not conducive to energy conservation and environmental protection. Summary of the invention

[0004] The purpose of the present invention is to provide a steelmaking waste gas treatment device, aiming to solve the technical problems in the prior art that dust is easy to block the filter plate and waste water resources.

[0005] The present invention is implemented as follows: a steelmaking waste gas treatment device comprises a box body, a partition is fixedly connected to the interior of the box body, the partition divides the interior of the box body into a dust filter chamber and a waste gas treatment chamber, an air inlet pipe connected to the dust filter chamber is arranged on the side of the box body, a convex block is fixedly connected to the side of the partition close to the dust filter chamber, a movable groove is provided on the side of the convex block, a sliding frame is slidably connected to the interior of the movable groove, a No. 1 compression spring is connected between the sliding frame and the side wall of the movable groove, a filter plate is fixedly connected to the interior of the sliding frame, the filter plate is used to filter dust, the interior of the waste gas treatment chamber is fixedly connected to a treatment box via a fixed platform, and the interior of the treatment box is provided with Lime water, sulfur dioxide, hydrogen sulfide and carbon dioxide in the waste gas can react chemically with the lime water to generate precipitates, thereby removing sulfur dioxide, hydrogen sulfide and carbon dioxide in the waste gas to avoid air pollution. A ventilation cavity connected to the movable groove is provided inside the protrusion, and a gas pipeline connected to the ventilation cavity is fixedly connected to the side of the partition, one end of the gas pipeline extends to the inside of the treatment box, and the end of the gas pipeline is located below the lime water. An exhaust pipe is connected to the side of the treatment box, and one end of the exhaust pipe extends out of the box body. The bottom of the treatment box is connected to a sedimentation box, and the top of the box body is fixedly connected to a storage bin, and quicklime is arranged inside the storage bin. It also includes:

[0006] A dust cleaning mechanism, wherein the dust cleaning mechanism is installed on the box body, the input end of the dust cleaning mechanism is located on the extension line of the axis of the air intake pipe, and the output end of the dust cleaning mechanism abuts against the surface of the filter plate. When the intensity of the airflow entering the air intake pipe changes, the dust cleaning mechanism is used to clean the dust on the surface of the filter plate to prevent the filter plate from being blocked by dust;

[0007] A slag removal mechanism, wherein the slag removal mechanism is installed on the treatment box, and the output end of the slag removal mechanism contacts the inner bottom of the treatment box. The slag removal mechanism is used to clean the sediment at the bottom of the treatment box into the sedimentation box. The staff takes out the sediment in the sedimentation box in time to avoid further reaction of the excessive sediment with the lime water, and avoids the dilution of the lime water by the newly generated chemical substances, thereby ensuring the concentration of the lime water and improving the efficiency of the waste gas treatment;

[0008] A feeding mechanism, wherein the feeding mechanism is installed on the top of the box body, the input end of the feeding mechanism is connected to the bottom of the storage bin, and the output end of the feeding mechanism is connected to the processing box. The feeding mechanism is used to transport the quicklime inside the storage bin to the inside of the processing box, and the quicklime and water react again to form lime water, so that the concentration of the lime water inside the processing box remains unchanged, thereby improving the processing efficiency;

[0009] A sliding rheostat is installed on the side wall of the movable groove, the input end of the sliding rheostat is connected to the side of the sliding frame, and the sliding rheostat is connected to the circuit of the feeding mechanism. When the exhaust gas entry rate increases, the exhaust gas will push the filter plate and the sliding frame to move, and the sliding frame drives the sliding rheostat to move, and the resistance value of the sliding rheostat decreases, thereby increasing the power of the feeding mechanism, improving the feeding speed of the feeding mechanism, and allowing the exhaust gas to be processed in time.

[0010] Further technical solution: the dust cleaning mechanism includes a mounting seat and a fixing block fixedly connected to the top of the box body, the mounting seat is rotatably connected to a connecting rod through a pin shaft, one end of the connecting rod is fixedly connected to a swing ball, the swing ball is a hollow sphere with a certain weight, so that it can be blown up more easily, the center of the swing ball is located on the extension line of the axis of the intake pipe, preferably, the diameter of one end of the intake pipe located in the dust filter chamber is smaller than the diameter of the other end of the intake pipe, according to Bernoulli's principle, when a constant flow rate of air passes through the intake pipe, the speed of the airflow is greater when passing through a pipe with a smaller diameter, So that it is easier to blow up the swinging ball, the fixed block is slidably connected with a second connecting rod, a sliding groove is provided on the side of the connecting rod, the second connecting rod is slidably connected to the sliding groove through a positioning pin, the sliding groove and the swinging ball are located on both sides of the pin shaft, the other end of the second connecting rod is hinged with the first connecting rod, one end of the first connecting rod is hinged with a lifting rod, the side of the box body is fixedly connected with a second fixed sleeve through the second fixed rod, the lifting rod is slidably connected to the inside of the second fixed sleeve, and a plurality of scrapers are fixedly connected to the side of the lifting rod close to the filter plate, and the plurality of scrapers all abut against the surface of the filter plate.

[0011] Further technical solution: the slag removal mechanism includes a slideway opened on the inner wall of the processing box, a movable plate is slidably connected to the slideway, and a filter screen plate is hinged on the side of the movable plate close to the sedimentation box through a spring hinge, and the bottom of the filter screen plate is in contact with the bottom of the processing box, and a single-head reciprocating screw is rotatably connected inside the processing box, and the single-head reciprocating screw is threadedly connected to the movable plate, and a first motor is fixedly installed on the outer side of the processing box, and the output shaft of the first motor is fixedly connected to one end of the single-head reciprocating screw.

[0012] Further technical solution: also includes a sweeping mechanism, which is installed inside the processing box, the input end of the sweeping mechanism is connected to the single-head reciprocating screw, and the output end of the sweeping mechanism can contact the side of the filter screen plate. When the filter screen plate moves to the top of the sedimentation box, the sweeping mechanism is used to sweep the sediment on the surface of the filter screen plate to prevent the filter screen plate from being blocked by the sediment, thereby preventing the sediment at the bottom of the processing box from being lifted up again, thereby improving the sediment removal effect.

[0013] Further technical solution: the sweeping mechanism includes a double-headed reciprocating screw rotatably connected to the inside of the processing box, the double-headed reciprocating screw is composed of two reciprocating screws welded together, the two reciprocating screws are symmetrically distributed about the middle of the double-headed reciprocating screw, and the double-headed reciprocating screw and the single-headed reciprocating screw are vertically distributed, the double-headed reciprocating screw is fixedly connected to a worm gear, the single-headed reciprocating screw is fixedly connected to a worm, the worm and the worm gear are meshingly connected, the double-headed reciprocating screw is threaded with two cleaning components, the two cleaning components are respectively located at the two ends of the double-headed reciprocating screw, and the cleaning components are slidingly connected to the side walls of the processing box.

[0014] Further technical solution: The cleaning assembly includes a moving block threadedly connected to a double-head reciprocating screw, a mounting groove being provided on the side of the moving block, an extension block being slidingly connected inside the mounting groove, a cleaning brush being fixedly connected to one end of the extension block, and a No. 2 compression spring being connected between the extension block and the side wall of the mounting groove.

[0015] A further technical solution also includes a closing mechanism, which includes a guide rail fixedly connected to the sedimentation box and communicated with the interior of the sedimentation box, a closing plate is slidably connected to the interior of the guide rail, a telescopic rod is fixedly connected to the side wall of the box, and the movable end of the telescopic rod is fixedly connected to the side of the closing plate.

[0016] Further technical solution: the feeding mechanism includes a feeding box fixedly connected to the top of the box body, the bottom of the storage bin is connected to the interior of the feeding box, a second motor is fixedly installed on the side of the feeding box, the output shaft of the second motor is fixedly connected to a rotating rod, one end of the rotating rod located inside the feeding box is fixedly connected to a spiral blade, the end of the feeding box away from the storage bin is connected to a feeding pipe, and one end of the feeding pipe is connected to the interior of the processing box.

[0017] Further technical solution: also includes a stirring mechanism, the stirring mechanism includes a first stirring shaft rotatably connected to the top of the processing box, a plurality of horizontal stirring plates are fixedly connected to the first stirring shaft, the end of the first stirring shaft extending out of the box body is fixedly connected to the third bevel gear, the end of the rotating rod extending out of the feeding box is fixedly connected to the fourth bevel gear, the fourth bevel gear and the third bevel gear are meshingly connected, the interior of the processing box is fixedly connected to two first fixed sleeves through the first fixed rod, the two first fixed sleeves are respectively located on both sides of the first stirring shaft, the two first fixed sleeves are rotatably connected to the second stirring shaft, the opposite ends of the two second stirring shafts are fixedly connected to the vertical stirring plates, the opposite ends of the two second stirring shafts are fixedly connected to the first bevel gear, the first stirring shaft is fixedly connected to the second bevel gear, and the two first bevel gears are meshingly connected to the second bevel gear.

[0018] Further technical solution: a dust box is provided at the bottom of the dust filter chamber, a slag box is provided inside the sedimentation box, a first inspection door and a second inspection door are hinged on the side of the box body, the size and position of the first inspection door are matched with the dust box, and the size and position of the second inspection door are matched with the slag box.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. When the exhaust gas enters the box from the air inlet pipe, the exhaust gas will blow up the swinging ball. Affected by the firepower during steelmaking, the flow rate and volume of the exhaust gas will change all the time, causing the swinging ball to swing back and forth irregularly. The swinging ball drives the second connecting rod to move through the positioning pin, and the second connecting rod drives the lifting rod to move through the first connecting rod. The lifting rod drives the scraper to move, and the scraper repeatedly scrapes the dust on the surface of the filter plate. The scraped dust will fall into the dust collecting box, thereby avoiding the filter plate from being blocked and ensuring the filtering effect of the exhaust gas;

[0021] 2. During the waste gas treatment process, the second motor drives the rotating rod to rotate, and the rotating rod drives the spiral blade to rotate. The spiral blade brings the quicklime in the storage bin to the charging box and enters the treatment box through the discharge pipe. The quicklime reacts with the water in the treatment box to generate lime water, ensuring that the lime water is always in a saturated state, so that the waste gas treatment efficiency is always in the best state, improving the waste gas treatment effect and efficiency. At the same time, sulfur dioxide, hydrogen sulfide and carbon dioxide will generate water when reacting with lime water, and the total water volume in the treatment box remains unchanged, so that the water resources in the treatment box can be recycled to avoid wasting water resources;

[0022] 3. When the sediment is generated, the first motor drives the moving plate to move back and forth, and the moving plate drives the filter screen plate to clean the sediment at the bottom of the treatment box, and clean it into the slag collecting box in the sedimentation box, and take out the sediment in the slag collecting box in time to reduce the amount of sediment in the treatment box, avoid the sediment from reacting with lime water again, and improve the treatment effect of lime water on waste gas;

[0023] 4. When the amount of exhaust gas suddenly increases, the filter plate has no time to filter the dust in the exhaust gas, so that the exhaust gas pushes the filter plate to move, the filter plate drives the sliding frame to move, and the sliding frame drives the sliding rheostat to move, so that the resistance value of the sliding rheostat decreases, thereby increasing the power of the second motor, increasing the speed of the second motor, improving the feeding efficiency, and enabling the lime water in the treatment box to treat the exhaust gas in time, thereby improving the treatment effect of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2It is a schematic diagram of the three-dimensional interior of the box in the present invention.

[0026] Figure 3 For the present invention Figure 2 A is an enlarged schematic diagram.

[0027] Figure 4 It is a three-dimensional cross-sectional schematic diagram of the cleaning component in the present invention.

[0028] Figure 5 It is a schematic diagram of a front view cross section in the present invention.

[0029] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged view at B.

[0030] In the attached drawings: 1, box body; 2, ash box; 3, convex block; 4, partition; 5, gas pipeline; 6, treatment box; 7, fixed platform; 8, slag box; 9, sedimentation box; 10, closing mechanism; 101, guide rail; 102, closing plate; 103, telescopic rod; 11, sweeping mechanism; 111, cleaning brush; 112, extension block; 113, moving block; 114, worm gear; 115, worm; 116, double-headed reciprocating screw; 117, No. 2 compression spring; 118, mounting groove; 12, slag removal mechanism; 121, moving plate; 122, filter screen plate; 123, slideway; 124, single-headed reciprocating screw; 125, first motor; 13, stirring mechanism; 131, first stirring shaft; 132, horizontal stirring plate; 133, vertical stirring plate; 134, second stirring shaft; 135, first fixed sleeve; 1 36. first bevel gear; 137. second bevel gear; 138. third bevel gear; 139. fourth bevel gear; 14. exhaust pipe; 15. feeding mechanism; 151. second motor; 152. spiral blade; 153. rotating rod; 154. feeding box; 155. feeding pipe; 16. storage bin; 17. cleaning mechanism; 171. first connecting rod; 172. second fixing sleeve; 173. lifting rod; 174. scraper; 175. mounting seat; 176. connecting rod; 177. swing ball; 178. slide groove; 179. positioning pin; 1710. second connecting rod; 1711. fixing block; 18. air inlet pipe; 19. first inspection door; 20. second inspection door; 22. sliding frame; 23. filter plate; 24. sliding rheostat; 25. No. 1 compression spring; 26. ventilation cavity; 27. movable groove. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0033] like Figure 1-Figure 6 As shown, a steelmaking waste gas treatment device provided by the present invention comprises a box body 1, wherein a partition plate 4 is fixedly connected to the interior of the box body 1, wherein the partition plate 4 divides the interior of the box body 1 into a dust filter chamber and a waste gas treatment chamber, wherein an air inlet pipe 18 connected to the dust filter chamber is arranged on the side of the box body 1, wherein a protrusion 3 is fixedly connected to the side of the partition plate 4 close to the dust filter chamber, wherein a movable groove 27 is provided on the side of the protrusion 3, wherein a sliding frame 22 is slidably connected to the interior of the movable groove 27, wherein a No. 1 compression spring 25 is connected between the sliding frame 22 and the side wall of the movable groove 27, wherein a filter plate 23 is fixedly connected to the interior of the sliding frame 22, wherein the filter plate 23 is used to filter dust, wherein a treatment box 6 is fixedly connected to the interior of the waste gas treatment chamber via a fixed platform 7, wherein the interior of the treatment box 6 The part is provided with lime water, and the sulfur dioxide, hydrogen sulfide and carbon dioxide in the exhaust gas can react chemically with the lime water to generate precipitates, thereby removing the sulfur dioxide, hydrogen sulfide and carbon dioxide in the exhaust gas to avoid air pollution. The inside of the protrusion 3 is provided with a ventilation cavity 26 connected to the movable groove 27, and the side of the partition 4 is fixedly connected with a gas pipeline 5 connected to the ventilation cavity 26, one end of the gas pipeline 5 extends to the inside of the treatment box 6, and the end of the gas pipeline 5 is located below the lime water, the side of the treatment box 6 is connected with an exhaust pipe 14, one end of the exhaust pipe 14 extends out of the box body 1, the bottom of the treatment box 6 is connected with a sedimentation box 9, the top of the box body 1 is fixedly connected with a storage bin 16, and the inside of the storage bin 16 is provided with quicklime, and also includes:

[0034] A dust cleaning mechanism 17, the dust cleaning mechanism 17 is installed on the box body 1, the input end of the dust cleaning mechanism 17 is located on the extension line of the axis of the air inlet pipe 18, and the output end of the dust cleaning mechanism 17 abuts against the surface of the filter plate 23. When the intensity of the airflow entering the air inlet pipe 18 changes, the dust cleaning mechanism 17 is used to clean the dust on the surface of the filter plate 23 to prevent the filter plate 23 from being blocked by dust;

[0035] A slag removal mechanism 12, wherein the slag removal mechanism 12 is installed on the treatment box 6, and the output end of the slag removal mechanism 12 is in contact with the inner bottom of the treatment box 6. The slag removal mechanism 12 is used to clean the sediment at the bottom of the treatment box 6 into the sedimentation box 9. The staff takes out the sediment in the sedimentation box 9 in time to avoid further reaction of the excessive sediment with the lime water, and avoids the dilution of the lime water by the newly generated chemical substances, thereby ensuring the concentration of the lime water and improving the efficiency of the waste gas treatment;

[0036] A feeding mechanism 15, wherein the feeding mechanism 15 is installed at the top of the housing 1, wherein the input end of the feeding mechanism 15 is communicated with the bottom of the storage bin 16, and the output end of the feeding mechanism 15 is communicated with the processing box 6, and the feeding mechanism 15 is used to transport the quicklime in the storage bin 16 to the inside of the processing box 6, and the quicklime and water react again to form lime water, so that the concentration of the lime water in the processing box 6 remains unchanged, thereby improving the processing efficiency;

[0037] A sliding rheostat 24 is installed on the side wall of the movable groove 27. The input end of the sliding rheostat 24 is connected to the side of the sliding frame 22. The sliding rheostat 24 is connected to the circuit of the feeding mechanism 15. When the exhaust gas entry rate increases, the exhaust gas will push the filter plate 23 and the sliding frame 22 to move. The sliding frame 22 drives the sliding rheostat 24 to move, and the resistance value of the sliding rheostat 24 decreases, thereby increasing the power of the feeding mechanism 15, improving the feeding speed of the feeding mechanism 15, and allowing the exhaust gas to be processed in time.

[0038] like Figure 2 and Figure 5-Figure 6 As shown, a steel-making waste gas treatment device provided by the present invention, in this embodiment, the dust cleaning mechanism 17 includes a mounting seat 175 and a fixed block 1711 fixedly connected to the top of the box body 1, and the mounting seat 175 is rotatably connected to a connecting rod 176 through a pin shaft, and one end of the connecting rod 176 is fixedly connected to a swing ball 177, and the swing ball 177 is a hollow sphere with a certain weight, so that it can be blown up more easily, and the center of the swing ball 177 is located on the extension line of the axis of the intake pipe 18. Preferably, the diameter of one end of the intake pipe 18 located in the dust filter chamber is smaller than the diameter of the other end of the intake pipe 18. According to the Bernoulli principle, when a constant flow rate of air passes through the intake pipe 18, the speed of the air flow is greater when passing through a pipe with a smaller diameter, so that it can be more easily blown up. When the swinging ball 177 is blown up, the second connecting rod 1710 is slidably connected to the fixed block 1711, and a sliding groove 178 is provided on the side of the connecting rod 176. The second connecting rod 1710 is slidably connected to the sliding groove 178 through a positioning pin 179, and the sliding groove 178 and the swinging ball 177 are located on both sides of the pin shaft. The other end of the second connecting rod 171 is hinged to the first connecting rod 171, and one end of the first connecting rod 171 is hinged to the lifting rod 173. The side of the box body 1 is fixedly connected to the second fixed sleeve 172 through the second fixed rod, and the lifting rod 173 is slidably connected to the inside of the second fixed sleeve 172. The lifting rod 173 is fixedly connected to a plurality of scrapers 174 on the side of the lifting rod 173 close to the filter plate 23, and the plurality of scrapers 174 are all in contact with the surface of the filter plate 23.

[0039] like Figure 3As shown, a steelmaking waste gas treatment device provided by the present invention, in this embodiment, the slag removal mechanism 12 includes a slide 123 opened on the inner wall of the treatment box 6, and a movable plate 121 is slidably connected to the slide 123, and the movable plate 121 is hinged with a filter screen plate 122 on the side close to the sedimentation box 9 through a spring hinge, and the bottom of the filter screen plate 122 is in contact with the bottom of the treatment box 6, and the internal rotation of the treatment box 6 is connected to a single-head reciprocating screw 124, and the single-head reciprocating screw 124 is threadedly connected to the movable plate 121, and a first motor 125 is fixedly installed on the outer side of the treatment box 6, and the output shaft of the first motor 125 is fixedly connected to one end of the single-head reciprocating screw 124.

[0040] When the first motor 125 drives the single-head reciprocating screw rod 124 to rotate, the single-head reciprocating screw rod 124 drives the moving plate 121 to move, and the moving plate 121 drives the filter screen plate 122 to move. When the filter screen plate 122 moves toward the sedimentation box 9, due to the obstruction of the moving plate 121, the bottom of the filter screen plate 122 will always contact with the bottom of the processing box 6, so that the sediment at the bottom of the processing box 6 can be swept into the sedimentation box 9; when the filter screen plate 122 moves in the direction away from the sedimentation box 9, under the impact of the water flow, the filter screen plate 122 will rotate upward, reducing the impact of the filter screen plate 122 on the water flow, and avoiding the sediment at the bottom of the processing box 6 from being taken away from the sedimentation box 9. When the filter screen plate 122 stops moving or moves toward the sedimentation box 9 again, under the impact of the spring hinge and the water flow, the bottom of the filter screen plate 122 contacts with the bottom of the processing box 6 again, so that the sediment at the bottom of the processing box 6 can be cleaned more cleanly.

[0041] like Figure 2-Figure 4 As shown, a steelmaking waste gas treatment device provided by the present invention, in this embodiment, also includes a sweeping mechanism 11, the sweeping mechanism 11 is installed inside the treatment box 6, the input end of the sweeping mechanism 11 is connected to the single-head reciprocating screw 124, the output end of the sweeping mechanism 11 can contact the side of the filter screen plate 122, when the filter screen plate 122 moves to the top of the sedimentation box 9, the sweeping mechanism 11 is used to sweep the sediment on the surface of the filter screen plate 122 to prevent the filter screen plate 122 from being blocked by the sediment, thereby preventing the sediment at the bottom of the treatment box 6 from being re-lifted, thereby improving the sediment removal effect.

[0042] like Figure 3-Figure 4As shown, a steelmaking waste gas treatment device provided by the present invention, in this embodiment, the sweeping mechanism 11 includes a double-headed reciprocating screw 116 rotatably connected to the inside of the treatment box 6, the double-headed reciprocating screw 116 is composed of two reciprocating screws welded together, the two reciprocating screws are symmetrically distributed about the middle of the double-headed reciprocating screw 116, and the double-headed reciprocating screw 116 and the single-headed reciprocating screw 124 are vertically distributed, the double-headed reciprocating screw 116 is fixedly connected with a worm gear 114, the single-headed reciprocating screw 124 is fixedly connected with a worm 115, the worm 115 and the worm gear 114 are meshingly connected, the double-headed reciprocating screw 116 is threadedly connected with two cleaning components, the two cleaning components are respectively located at the two ends of the double-headed reciprocating screw 116, and the cleaning components are slidably connected to the side walls of the treatment box 6.

[0043] like Figure 3-Figure 4 As shown, a steelmaking waste gas treatment device provided by the present invention, in this embodiment, the cleaning component includes a moving block 113 threadedly connected to a double-head reciprocating screw 116, a mounting groove 118 is provided on the side of the moving block 113, an extension block 112 is slidably connected inside the mounting groove 118, a cleaning brush 111 is fixedly connected to one end of the extension block 112, and a No. 2 compression spring 117 is connected between the extension block 112 and the side wall of the mounting groove 118.

[0044] When the filter screen plate 122 is close to the sedimentation box 9, the cleaning brush 111 will first contact the side of the filter screen plate 122. While the single-head reciprocating screw 124 drives the filter screen plate 122 to move, the single-head reciprocating screw 124 also drives the worm wheel 114 to rotate through the worm 115. The worm wheel 114 drives the double-head reciprocating screw 116 to rotate. The double-head reciprocating screw 116 drives the moving block 113, the extension block 112 and the cleaning brush 111 to reciprocate. The cleaning brush 111 cleans the sediment on the surface of the filter screen plate 122. Due to the presence of the No. 2 compression spring 117, the extension block 112 does not affect the movement of the filter screen plate 122.

[0045] like Figure 3 As shown, a steelmaking waste gas treatment device provided by the present invention, in this embodiment, also includes a closing mechanism 10, the closing mechanism 10 includes a guide rail 101 fixedly connected to the sedimentation box 9 and connected to the interior of the sedimentation box 9, the interior of the guide rail 101 is slidably connected with a closing plate 102, the side wall of the box body 1 is fixedly connected with a telescopic rod 103, and the movable end of the telescopic rod 103 is fixedly connected to the side of the closing plate 102.

[0046] When cleaning the sediment, the telescopic rod 103 drives the closing plate 102 to move, and the closing plate 102 extends into the interior of the sedimentation box 9 and seals the interior of the sedimentation box 9 to prevent the lime water in the treatment box 6 from entering the sedimentation box 9. Then, the sediment inside the sedimentation box 9 can be cleaned without shutting down the entire device.

[0047] like Figure 5 As shown, a steelmaking waste gas treatment device provided by the present invention, in this embodiment, the feeding mechanism 15 includes a feeding box 154 fixedly connected to the top of the box body 1, the bottom of the storage bin 16 is connected to the interior of the feeding box 154, and a second motor 151 is fixedly installed on the side of the feeding box 154, and the output shaft of the second motor 151 is fixedly connected to a rotating rod 153, and one end of the rotating rod 153 located inside the feeding box 154 is fixedly connected to a spiral blade 152, and the end of the feeding box 154 away from the storage bin 16 is connected to a discharge pipe 155, and one end of the discharge pipe 155 is connected to the interior of the treatment box 6.

[0048] like Figure 2 As shown, a steelmaking waste gas treatment device provided by the present invention, in this embodiment, also includes a stirring mechanism 13, the stirring mechanism 13 includes a first stirring shaft 131 rotatably connected to the top of the treatment box 6, a plurality of horizontal stirring plates 132 are fixedly connected to the first stirring shaft 131, one end of the first stirring shaft 131 extending out of the box body 1 is fixedly connected to a third bevel gear 138, and one end of the rotating rod 153 extending out of the feeding box 154 is fixedly connected to a fourth bevel gear 139, the fourth bevel gear 139 and the third bevel gear 138 are meshed and connected, and the interior of the treatment box 6 Two first fixed sleeves 135 are fixedly connected by a first fixed rod, and the two first fixed sleeves 135 are respectively located on both sides of the first stirring shaft 131, and the two first fixed sleeves 135 are rotatably connected to the second stirring shaft 134, and the opposite ends of the two second stirring shafts 134 are fixedly connected to the vertical stirring plates 133, and the opposite ends of the two second stirring shafts 134 are fixedly connected to the first bevel gears 136, and the first stirring shaft 131 is fixedly connected to the second bevel gear 137, and the two first bevel gears 136 are meshed with the second bevel gear 137.

[0049] like Figure 1-Figure 2 and Figure 5 As shown, a steelmaking waste gas treatment device provided by the present invention is provided. In this embodiment, an ash box 2 is provided at the bottom of the dust filter chamber, a slag box 8 is provided inside the sedimentation box 9, and a first inspection door 19 and a second inspection door 20 are hinged on the side of the box body 1. The size and position of the first inspection door 19 are compatible with the ash box 2, and the size and position of the second inspection door 20 are compatible with the slag box 8.

[0050] In the present invention, the second motor 151 and the first motor 125 are motors, and of course they can also be other components that can output rotational power, such as hydraulic motors. The telescopic rod 103 is an electric telescopic rod 103, and of course it can also be other components that can actively change the length, such as hydraulic cylinders.

[0051] When in use, the steelmaking waste gas is introduced into the box body 1 from the air inlet pipe 18. When the waste gas passes through the filter plate 23, the dust in the waste gas will be blocked by the filter plate 23. After passing through the filter plate 23, the waste gas passes through the gas pipeline 5 and enters the treatment box 6. The sulfur dioxide, hydrogen sulfide and carbon dioxide in the waste gas react with the lime water in the treatment box 6 to generate precipitates. The purified gas is discharged from the exhaust pipe 14, and the discharged gas can also be further processed.

[0052] When the exhaust gas enters the box body 1 from the air inlet pipe 18, the exhaust gas will blow up the swing ball 177. However, due to the influence of the firepower during steelmaking, the flow rate and volume of the exhaust gas will change all the time, thereby causing the swing ball 177 to swing back and forth irregularly. The swing ball 177 drives the second connecting rod 1710 to move through the positioning pin 179. The second connecting rod 1710 drives the lifting rod 173 to move up and down through the first connecting rod 171. The lifting rod 173 drives the scraper 174 to move. The scraper 174 repeatedly scrapes the dust on the surface of the filter plate 23. The scraped dust will fall into the dust collecting box 2, thereby preventing the filter plate 23 from being blocked and ensuring the filtering effect of the exhaust gas.

[0053] At the same time, the first motor 125 drives the single-head reciprocating screw 124 to rotate, the single-head reciprocating screw 124 drives the moving plate 121 to move back and forth, and the moving plate 121 drives the filter screen plate 122 to clean the sediment at the bottom of the treatment box 6, and clean it into the slag collecting box 8 in the sedimentation box 9, thereby reducing the amount of sediment in the treatment box 6, preventing the sediment from reacting with the lime water again, and improving the treatment effect of the lime water on the exhaust gas;

[0054] When the filter screen plate 122 moves to the top of the sedimentation box 9, the cleaning brush 111 cleans the sediment on the surface of the filter screen plate 122 to prevent the filter screen plate 122 from being blocked, thereby preventing the sediment at the bottom of the treatment box 6 from being lifted up again, thereby improving the treatment efficiency of the sediment;

[0055] At the same time, the second motor 151 drives the rotating rod 153 to rotate, and the rotating rod 153 drives the spiral blade 152 to rotate. The spiral blade 152 brings the quicklime in the storage bin 16 to the charging box 154, and enters the processing box 6 through the discharge pipe 155. The quicklime reacts with the water in the processing box 6 to generate lime water, ensuring that the lime water is always in a saturated state, so that the waste gas treatment efficiency is always in an optimal state, thereby improving the waste gas treatment effect and treatment efficiency. At the same time, sulfur dioxide, hydrogen sulfide and carbon dioxide will generate water when reacting with lime water, and the total water volume in the processing box 6 remains unchanged, so that the water resources in the processing box 6 can be recycled to avoid wasting water resources;

[0056] When quicklime is added into the treatment box 6, the rotating rod 153 will also drive the fourth bevel gear 139 to rotate, the fourth bevel gear 139 drives the third bevel gear 138 and the first stirring shaft 131 to rotate, the first stirring shaft 131 drives the horizontal stirring plate 132 to rotate, the horizontal stirring plate 132 stirs the lime water horizontally, so that the quicklime and water are quickly mixed, the generation speed of lime water is increased, and the treatment efficiency of the waste gas is improved. At the same time, the first stirring shaft 131 drives the second bevel gear 137 to rotate, the second bevel gear 137 drives the two first bevel gears 136 and the second stirring shaft 134 to rotate, the second stirring shaft 134 drives the vertical stirring plate 133 to rotate, and the vertical stirring plate 133 stirs the lime water in a vertical direction, which can quickly exchange the lime water at the top of the treatment box 6 with the lime water at the bottom thereof, so that the lime water is more evenly distributed. In the process of the waste gas rising from the bottom of the treatment box 6, the sulfur dioxide, hydrogen sulfide and carbon dioxide in the waste gas can always react with the lime water, thereby improving the treatment effect of the waste gas;

[0057] When the amount of waste gas suddenly increases, the filter plate 23 has no time to filter the dust in the waste gas, so that the waste gas pushes the filter plate 23 to move, the filter plate 23 drives the sliding frame 22 to move, and the sliding frame 22 drives the sliding rheostat 24 to move, so that the resistance value of the sliding rheostat 24 decreases, thereby increasing the power of the second motor 151, increasing the speed of the second motor 151, improving the feeding efficiency, and enabling the lime water in the processing box 6 to process the waste gas in time, thereby improving the treatment effect of the waste gas;

[0058] In order to prevent the precipitate from reacting with the lime water again, the precipitate should be taken out from the processing box 6 in time. When taking it out, the telescopic rod 103 drives the closing plate 102 to close the sedimentation box 9, and then the second inspection door 20 is opened to take out the slag collecting box 8, and the precipitate in the slag collecting box 8 can be taken out, the slag collecting box 8 is reinstalled, and the closing plate 102 is removed to collect the precipitate again.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0060] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A steelmaking waste gas treatment device, comprising a housing (1), characterized in that: A partition (4) is fixedly connected to the interior of the box (1), and the partition (4) divides the interior of the box (1) into a dust filter chamber and an exhaust gas treatment chamber. An air inlet pipe (18) connected to the dust filter chamber is arranged on the side of the box (1). A protrusion (3) is fixedly connected to the side of the partition (4) close to the dust filter chamber. A movable groove (27) is provided on the side of the protrusion (3). A sliding frame (22) is slidably connected to the interior of the movable groove (27). A No. 1 compression spring (25) is connected between the sliding frame (22) and the side wall of the movable groove (27). A filter plate (23) is fixedly connected to the interior of the sliding frame (22). The interior of the exhaust gas treatment chamber is fixedly connected to the dust filter chamber via a fixed platform. (7) is fixedly connected to a treatment box (6), wherein lime water is arranged inside the treatment box (6), a ventilation cavity (26) communicating with the movable groove (27) is opened inside the protrusion (3), a gas pipeline (5) communicating with the ventilation cavity (26) is fixedly connected to the side of the partition (4), one end of the gas pipeline (5) extends into the interior of the treatment box (6), and the end of the gas pipeline (5) is located below the lime water, the side of the treatment box (6) is connected to an exhaust pipe (14), the bottom of the treatment box (6) is connected to a sedimentation box (9), the top of the box body (1) is fixedly connected to a storage bin (16), and quicklime is arranged inside the storage bin (16), and further comprises: a dust cleaning mechanism (17), the dust cleaning mechanism (17) being mounted on the housing (1), the input end of the dust cleaning mechanism (17) being located on an extension line of the axis of the air intake pipe (18), the output end of the dust cleaning mechanism (17) being in contact with a surface of a filter plate (23), and when the intensity of the airflow entering the air intake pipe (18) changes, the dust cleaning mechanism (17) is used to clean dust on the surface of the filter plate (23); A slag removal mechanism (12), the slag removal mechanism (12) being mounted on the processing box (6), the output end of the slag removal mechanism (12) being in contact with the inner bottom of the processing box (6), the slag removal mechanism (12) being used to sweep sediment at the bottom of the processing box (6) into the sedimentation box (9), the slag removal mechanism (12) comprising a slideway (123) provided on the inner side wall of the processing box (6), a movable plate (121) being slidably connected to the slideway (123), the movable plate (121) being close to the sedimentation box (9) A filter screen plate (122) is hingedly connected to the side surface of the processing box (6) via a spring hinge, the bottom of the filter screen plate (122) contacts the bottom of the processing box (6), a single-head reciprocating screw rod (124) is rotatably connected inside the processing box (6), the single-head reciprocating screw rod (124) is threadedly connected to the movable plate (121), and a first motor (125) is fixedly mounted on the outer side surface of the processing box (6), the output shaft of the first motor (125) is fixedly connected to one end of the single-head reciprocating screw rod (124); A feeding mechanism (15), the feeding mechanism (15) being installed on the top of the box body (1), the input end of the feeding mechanism (15) being connected to the bottom of the storage bin (16), the output end of the feeding mechanism (15) being connected to the processing box (6), the feeding mechanism (15) being used to transport the quicklime in the storage bin (16) to the inside of the processing box (6); A sliding rheostat (24), the sliding rheostat (24) being mounted on a side wall of the movable groove (27), the input end of the sliding rheostat (24) being connected to a side surface of the sliding frame (22), and the sliding rheostat (24) being connected to a circuit of a feeding mechanism (15); A sweeping mechanism (11), the sweeping mechanism (11) being installed inside a processing box (6), the input end of the sweeping mechanism (11) being connected to a single-head reciprocating screw (124), the output end of the sweeping mechanism (11) being able to contact a side surface of a filter screen plate (122), the sweeping mechanism (11) being used to sweep sediment on the surface of the filter screen plate (122), the sweeping mechanism (11) comprising a double-head reciprocating screw (116) rotatably connected inside the processing box (6), the double-head reciprocating screw (116) being able to contact a side surface of a filter screen plate (122), the sweeping mechanism (11) being used to sweep sediment on the surface of the filter screen plate (122), the sweeping mechanism (11) comprising a double-head reciprocating screw (116) being rotatably connected inside the processing box (6), the double-head reciprocating screw (116) being able to contact a side surface of a filter screen plate (122), the sweeping mechanism (11) being able to contact a side surface of a filter screen plate (122), the sweeping mechanism (11) being able to sweep sediment on the surface of the ... The double-headed reciprocating screw (116) and the single-headed reciprocating screw (124) are vertically distributed, the double-headed reciprocating screw (116) is fixedly connected to a worm wheel (114), the single-headed reciprocating screw (124) is fixedly connected to a worm (115), the worm (115) and the worm wheel (114) are meshingly connected, the double-headed reciprocating screw (116) is threadedly connected to two cleaning assemblies, the two cleaning assemblies are respectively located at two ends of the double-headed reciprocating screw (116), and the cleaning assemblies are slidably connected to the side wall of the processing box (6); A closing mechanism (10), the closing mechanism (10) comprising a guide rail (101) fixedly connected to the sedimentation box (9) and communicating with the interior of the sedimentation box (9), a closing plate (102) being slidably connected to the interior of the guide rail (101), a telescopic rod (103) being fixedly connected to the side wall of the box body (1), and a movable end of the telescopic rod (103) being fixedly connected to a side surface of the closing plate (102); The cleaning assembly comprises a moving block (113) threadedly connected to a double-ended reciprocating screw rod (116); a mounting groove (118) is provided on a side of the moving block (113); an extension block (112) is slidably connected inside the mounting groove (118); a cleaning brush (111) is fixedly connected to one end of the extension block (112); and a No. 2 compression spring (117) is connected between the extension block (112) and a side wall of the mounting groove (118).

2. The steelmaking waste gas treatment device according to claim 1, characterized in that: The dust cleaning mechanism (17) comprises a mounting seat (175) and a fixed block (1711) fixedly connected to the top of the box body (1); a connecting rod (176) is rotatably connected to the mounting seat (175) via a pin shaft; a swing ball (177) is fixedly connected to one end of the connecting rod (176); the center of the swing ball (177) is located on the extension line of the axis of the intake pipe (18); a second connecting rod (1710) is slidably connected to the fixed block (1711); a sliding groove (178) is provided on the side of the connecting rod (176); the second connecting rod (1710) is connected to the sliding groove (178) via a positioning pin (179). ) are slidably connected, the slide groove (178) and the swing ball (177) are located on both sides of the pin shaft, the other end of the second connecting rod (1710) is hinged to the first connecting rod (171), one end of the first connecting rod (171) is hinged to the lifting rod (173), the side of the box body (1) is fixedly connected to the second fixing sleeve (172) through the second fixing rod, the lifting rod (173) is slidably connected to the inside of the second fixing sleeve (172), and the lifting rod (173) is fixedly connected to the side of the filter plate (23) close to a plurality of scrapers (174), and the plurality of scrapers (174) are all in contact with the surface of the filter plate (23).

3. The steelmaking waste gas treatment device according to claim 1, characterized in that: The feeding mechanism (15) comprises a feeding box (154) fixedly connected to the top of the box body (1); the bottom of the storage bin (16) is connected to the interior of the feeding box (154); a second motor (151) is fixedly mounted on the side of the feeding box (154); the output shaft of the second motor (151) is fixedly connected to a rotating rod (153); one end of the rotating rod (153) located inside the feeding box (154) is fixedly connected to a spiral blade (152); one end of the feeding box (154) away from the storage bin (16) is connected to a discharge pipe (155); one end of the discharge pipe (155) is connected to the interior of the processing box (6).

4. The steelmaking waste gas treatment device according to claim 3, characterized in that: The invention also comprises a stirring mechanism (13), wherein the stirring mechanism (13) comprises a first stirring shaft (131) rotatably connected to the top of the processing box (6), a plurality of horizontal stirring plates (132) being fixedly connected to the first stirring shaft (131), an end of the first stirring shaft (131) extending out of the box body (1) being fixedly connected to a third bevel gear (138), an end of the rotating rod (153) extending out of the feeding box (154) being fixedly connected to a fourth bevel gear (139), the fourth bevel gear (139) being meshingly connected to the third bevel gear (138), and the interior of the processing box (6) being fixedly connected to a first fixed rod. Two first fixed sleeves (135), the two first fixed sleeves (135) are respectively located on both sides of the first stirring shaft (131), the two first fixed sleeves (135) are rotatably connected to the second stirring shaft (134), the two second stirring shafts (134) are fixedly connected to the vertical stirring plates (133) at the opposite ends, the two second stirring shafts (134) are fixedly connected to the first bevel gear (136) at the opposite ends, the first stirring shaft (131) is fixedly connected to the second bevel gear (137), and the two first bevel gears (136) are meshingly connected to the second bevel gear (137).

5. The steelmaking waste gas treatment device according to claim 1, characterized in that: A dust collecting box (2) is arranged at the bottom of the dust filtering chamber, a slag collecting box (8) is arranged inside the settling box (9), and a first inspection door (19) and a second inspection door (20) are hingedly connected to the side of the box body (1), the size and position of the first inspection door (19) are both compatible with the dust collecting box (2), and the size and position of the second inspection door (20) are both compatible with the slag collecting box (8).

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