Cupola flue gas cleaning plant

Abstract

The application relates to the technical field of environmental protection equipment, in particular to a cupola flue gas purification equipment, which comprises a tower body, a spraying mechanism, a mixing mechanism and a sealing structure. An exhaust pipe is arranged in an exhaust port arranged at the upper end of the tower body, a discharge pipe is arranged in a discharge port arranged at the lower side of the outer arc surface of the tower body, and a discharge valve is connected in series with the middle part of the discharge pipe. The spraying mechanism comprises a feeding pipe and a conveying hose, the feeding pipe is arranged in a feeding port arranged at the upper side of the outer arc surface of the tower body, a feeding valve is connected in series with the middle part of the feeding pipe, and the rear end of the feeding pipe is connected with a conveying port arranged at the front end of the conveying hose. The mixing mechanism is arranged in the interior of the tower body. The sealing structure is arranged in the interior of the tower body. The equipment can prevent the backflow of slurry in the interior of the tower body into the interior of the feeding pipe, can increase the coverage area of the spray head, can increase the contact area between sulfur dioxide and calcium carbonate solution, and can improve the reaction efficiency.

Description

Technical Field

[0001] This invention relates to the field of environmental protection equipment technology, specifically to a cupola flue gas purification device. Background Technology

[0002] The cupola is an important piece of equipment in casting production for melting cast iron. After melting the cast iron blocks into molten iron, it is poured into a sand mold and cooled before being opened to obtain the casting. The cupola is a vertical cylindrical melting furnace, which is divided into a front furnace and a rear furnace. The cupola uses coke as fuel. The main component of the flue gas produced by the operation of the cupola is sulfur dioxide.

[0003] To prevent cupola flue gas from polluting the environment, purification equipment is usually used to purify the flue gas. The purification equipment typically uses calcium carbonate solution to absorb sulfur dioxide in the cupola flue gas. The sulfur dioxide and calcium carbonate solution react to produce gypsum, thereby reducing the pollution of sulfur dioxide to the environment.

[0004] Existing flue gas purification equipment typically sprays calcium carbonate solution using nozzles. However, the nozzle positions are fixed, resulting in limited coverage. While using multiple nozzles increases coverage, it also increases cost. When the calcium carbonate solution containing sulfur dioxide accumulates at the bottom of the purification equipment, it is stirred. However, the stirring direction is relatively unidirectional, limiting the contact area between sulfur dioxide and calcium carbonate solution and reducing reaction efficiency. Some purification equipment uses multiple stirring devices to further disperse the sulfur dioxide and calcium carbonate solution. While multi-directional stirring and mixing of the solution improves reaction efficiency, it also makes the internal structure of the purification equipment more complex. During the process of injecting cupola flue gas into the purification equipment from the external gas supply equipment, the large temperature difference between the inlet pipe and the purification equipment leads to scale buildup inside the inlet pipe. When the gas pressure inside the inlet pipe is lower than the set value, it is usually necessary to close the inlet pipe through a solenoid valve. However, the solenoid valve may become stuck due to scale buildup, making it impossible to completely close the inlet pipe. This results in the slurry inside the purification equipment flowing back, which can damage the external gas supply equipment. Therefore, we propose a cupola flue gas purification device. Summary of the Invention

[0005] The technical problem this invention aims to solve is to overcome existing defects and provide a cupola flue gas purification device. Through the coordinated arrangement of the mounting base and adjusting base, the position of the sealing plate can be adjusted, replacing the traditional method of sealing the air inlet with a solenoid valve. This solves the problem of the solenoid valve getting stuck during closing due to scaling inside the air inlet pipe, further preventing the slurry inside the tower from flowing back into the air inlet pipe. Through the coordinated arrangement of the adjusting plate, fixing plate, and cam, the nozzle can be driven to perform lateral reciprocating motion during operation, increasing the nozzle coverage area. Through the coordinated arrangement of the driving bevel gears, the sulfur dioxide and calcium carbonate solution can be stirred in multiple directions during mixing, further increasing the contact area between the sulfur dioxide and calcium carbonate solution while preventing gypsum from settling. The structure is simple, and the entire process requires only one motor, improving stirring efficiency and effectively solving the problems in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cupola flue gas purification device, comprising a tower body, a spraying mechanism, a mixing mechanism, and a sealing structure;

[0007] An exhaust pipe is installed in the exhaust port at the top of the tower body, and a discharge pipe is installed in the discharge port on the lower side of the outer arc surface of the tower body. A discharge valve is connected in series in the middle of the discharge pipe.

[0008] The spraying mechanism includes a feed pipe and a conveying hose. The feed pipe is located in the feed port on the upper side of the outer arc surface of the tower body. A feed valve is connected in series in the middle of the feed pipe. The rear end of the feed pipe is connected to the conveying port at the front end of the conveying hose.

[0009] The mixing mechanism is located inside the tower body;

[0010] The sealing structure is located inside the tower body and is fixedly connected to the lower side of the outer arc surface of the tower body. Through the cooperation of the mounting base and the adjusting base, the position of the sealing plate can be adjusted, replacing the traditional method of blocking the air inlet with a solenoid valve. This solves the problem of the solenoid valve getting stuck during closing due to scale buildup inside the air inlet pipe, further preventing the slurry inside the tower body from flowing back into the air inlet pipe. Through the cooperation of the adjusting plate, the fixing plate, and the cam, the nozzle can be driven to perform a lateral reciprocating motion during operation, increasing the nozzle coverage area. Through the cooperation of the bevel gears, the sulfur dioxide and calcium carbonate solution can be stirred in multiple directions during mixing, further increasing the contact area between the sulfur dioxide and calcium carbonate solutions while preventing gypsum from settling. The structure is simple, and the entire process requires only one motor, improving stirring efficiency.

[0011] Furthermore, the spraying mechanism also includes guide slide columns, mounting plates, connecting pipes, and nozzles. The guide slide columns are respectively disposed on the upper side inside the tower body. The guide slide columns are slidably connected to the guide slide holes corresponding to the right end of the mounting plate. A fixed column is disposed in the middle of the upper end of the mounting plate. Connecting pipes are disposed in the clearance grooves opened on the front side of the upper end of the mounting plate. The lower end of the conveying hose is connected to the connection port provided on the upper end of the connecting pipe. The lower end of the connecting pipe is connected to the feeding port opened on the upper end of the mounting pipe. Nozzles are disposed in the spray ports opened on the lower end of the mounting pipe, which can purify the flue gas of the cupola furnace.

[0012] Furthermore, the mixing mechanism includes a rotating cylinder, a transmission plate, a vertical plate, an output rod, stirring blades, a drive motor, a drive bevel gear, and a bevel gear. The rotating cylinder is rotatably connected to the middle of the bottom wall of the tower body via bearings. A transmission plate is provided on the upper side of the outer arc surface of the rotating cylinder, and a vertical plate is provided on the upper end of the transmission plate. The output rod is rotatably connected to the inside of the rotating cylinder via sealed bearings. Stirring blades are provided on the upper side of the outer arc surface of the output rod. The drive motor is located in a cavity opened on the lower side of the tower body. A drive bevel gear is provided on the left end of the output shaft of the drive motor. The bevel gears are respectively located on the lower side of the outer arc surface of the rotating cylinder and the output rod. The bevel gears are meshed with the drive bevel gears, which can further increase the contact area between sulfur dioxide and calcium carbonate solution.

[0013] Furthermore, the sealing structure includes a protective cover, a guide groove, a sealing plate, a mounting base, an adjusting base, and a connecting rod. The protective cover is fixedly connected to the lower side of the outer arc surface of the tower body. The guide groove is located on the left side of the inner arc surface of the tower body. The mounting base is slidably connected inside the guide groove. A sealing plate is located at the right end of the mounting base. The adjusting base is slidably connected to the top wall of the protective cover. A connecting rod is rotatably connected to the adjusting groove at the lower end of the adjusting base via a pin. The lower end of the connecting rod is rotatably connected to the left end of the mounting base via a pin, which allows the position of the sealing plate to be adjusted.

[0014] Furthermore, the sealing structure also includes a screw and an adjusting motor. The screw is rotatably connected to the upper side inside the protective cover via a bearing. The screw is threadedly connected to a threaded hole on the upper side of the left end of the adjusting seat. The adjusting motor is located at the left end of the protective cover, and the right end of the adjusting motor's output shaft is fixedly connected to the left end of the screw, enabling the adjustment of the position of the adjusting seat.

[0015] Furthermore, it also includes a connecting plate, a protective box, a limiting slide groove, an adjusting plate, and a fixing plate. The connecting plate is located at the upper end of the fixing column, the limiting slide groove is located on the right side of the upper end of the connecting plate, the adjusting plate is located on the left side of the lower end of the connecting plate, the fixing plate is located on the right side of the upper end of the connecting plate, the adjusting plate is located on the left side of the limiting slide groove, the fixing plate is located on the right side of the limiting slide groove, and the protective box is located on the right side of the inner arc surface of the tower body. The protective box is located on the upper side of the connecting plate and can adjust the position of the nozzle.

[0016] Furthermore, it also includes a vertical pole, a cam, and a servo motor. The servo motor is located on the left side of the bottom wall of the protective box, the vertical pole is located at the lower end of the output shaft of the servo motor, the vertical pole is located inside the limiting slide groove, and the cam is located on the upper and lower sides of the outer arc surface of the vertical pole. The outer arc surface of the lower cam contacts the right surface of the adjusting plate, and the outer arc surface of the upper cam contacts the left surface of the fixing plate, which can adjust the position of the connecting plate.

[0017] Furthermore, it also includes an air inlet pipe and a pressure detector. The air inlet pipe is located in the air inlet port on the left side of the outer arc surface of the tower body. An air inlet valve is connected in series in the middle of the air inlet pipe. The air inlet pipe is located on the lower side of the protective cover. The pressure detector is located in the mounting groove on the right side of the outer arc surface of the air inlet pipe. The probe at the lower end of the pressure detector is located inside the air inlet pipe. During operation, the external gas supply equipment injects the cupola flue gas into the air inlet pipe, and the pressure detector monitors the air pressure inside the air inlet pipe in real time.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. When the air pressure inside the inlet pipe is lower than the set value, the regulating motor starts to run. The output shaft of the regulating motor drives the screw to rotate. The screw drives the regulating seat to move to the right through the threaded connection. During the movement of the regulating seat to the right, it applies a downward pressure to the mounting seat through the connecting rod. This causes the sealing plate to move downward along the guide groove through the mounting seat, sealing the air inlet and preventing the slurry inside the tower from flowing back into the inlet pipe. Through the cooperation of the mounting seat and the regulating seat, the position of the sealing plate can be adjusted, replacing the traditional method of sealing the air inlet through a solenoid valve. This solves the problem of the solenoid valve getting stuck during the closing process due to scale buildup inside the inlet pipe, further preventing the slurry inside the tower from flowing back into the inlet pipe.

[0020] 2. During the spraying of calcium carbonate solution by the nozzle, the servo motor starts running, driving the upright to rotate. The upright drives the two cams to rotate. When the contact point between the upper cam and the fixed plate changes from proximal to distal, the contact point between the lower cam and the adjusting plate changes from distal to proximal. The upper cam drives the connecting plate to move to the right through the fixed plate, causing the connecting plate to drive the mounting plate to move to the right through the fixed column. The mounting plate then drives the nozzle to move to the right. When the contact point between the lower cam and the adjusting plate changes from proximal to distal, the contact point between the upper cam and the fixed plate changes from distal to proximal. At this time, the lower cam drives the connecting plate to move to the left through the adjusting plate, causing the adjusting plate to drive the mounting plate to move to the left through the fixed column. The mounting plate then drives the nozzle to move to the left, thereby increasing the spraying area of ​​the nozzle. Through the coordinated setting of the adjusting plate, fixed plate, and cams, the nozzle can be driven to perform lateral reciprocating motion during operation, increasing the nozzle coverage area.

[0021] 3. Once the calcium carbonate solution containing sulfur dioxide has accumulated at the bottom of the tower, the drive motor starts operating. The output shaft of the drive motor drives the drive bevel gear to rotate. The drive bevel gear, through meshing connection, drives the lower bevel gear to rotate, which in turn drives the stirring fan blades to rotate via the output rod, thus stirring and mixing the sulfur dioxide and calcium carbonate solution. During the rotation of the output rod, the drive bevel gear, through meshing connection, drives the upper bevel gear to rotate, which in turn drives the vertical plate to rotate via the rotating cylinder. The rotating cylinder and the output rod rotate in opposite directions, further increasing the contact area between the sulfur dioxide and calcium carbonate solution, allowing the calcium carbonate solution to react more fully and preventing waste of the calcium carbonate solution. Through the cooperative design of the drive bevel gear and the bevel gear, the sulfur dioxide and calcium carbonate solution can be stirred in multiple directions during the mixing process, further increasing the contact area between the sulfur dioxide and calcium carbonate solution while preventing gypsum from settling to the bottom. The structure is simple, and the entire process can be completed with only one motor, improving the stirring efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the spray mechanism of the present invention;

[0024] Figure 3 This is a schematic cross-sectional view of the structure on the right side of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the mixing mechanism of the present invention;

[0026] Figure 5 This is an enlarged structural diagram of point A in the present invention;

[0027] Figure 6 This is an enlarged structural diagram of section B of the present invention.

[0028] In the diagram: 1-Tower body, 2-Control unit, 3-Exhaust pipe, 4-Spraying mechanism, 41-Guide slide column, 42-Mounting plate, 43-Connecting pipe, 44-Feed pipe, 45-Conveying hose, 46-Mounting pipe, 47-Sprayer head, 5-Mixing mechanism, 51-Rotating cylinder, 52-Transmission plate, 53-Upright plate, 54-Output rod, 55-Agitator blade, 56-Drive motor, 57-Drive bevel gear, 58-Bevel gear, 6-Sealing structure, 61-Protective cover, 62-Guide slide groove, 63-Sealing plate, 64-Mounting seat, 65-Screw, 66-Adjusting seat, 67-Connecting rod, 68-Adjusting motor, 7-Air inlet pipe, 8-Air pressure detector, 9-Connecting plate, 10-Protective box, 11-Upright column, 12-Cam, 13-Limit slide groove, 14-Adjusting plate, 15-Fixing plate, 16-Servo motor, 17-Discharge pipe. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-6 This embodiment provides a cupola flue gas purification device, including a tower body 1, a control unit 2, a spraying mechanism 4, a mixing mechanism 5, and a sealing structure 6.

[0031] An exhaust pipe 3 is installed in the exhaust port at the upper end of the tower body 1, and a discharge pipe 17 is installed in the discharge port on the lower side of the outer arc surface of the tower body 1. A discharge valve is connected in series in the middle of the discharge pipe 17. During operation, the cupola flue gas is injected into the interior of the tower body 1. Then, a calcium carbonate solution is sprayed through a spraying device to adsorb the sulfur dioxide in the cupola flue gas. When the calcium carbonate solution containing sulfur dioxide accumulates at the bottom of the tower body 1, the sulfur dioxide and calcium carbonate solution are stirred and mixed through a mixing device to further increase the reaction rate of sulfur dioxide and calcium carbonate solution and prevent the gypsum generated by the reaction of sulfur dioxide and calcium carbonate from settling to the bottom. Finally, the discharge valve is opened, and the external gypsum discharge pump discharges the gypsum generated by the reaction of sulfur dioxide and calcium carbonate solution through the discharge pipe 17. The cupola flue gas after desulfurization and purification can be discharged through the exhaust pipe 3.

[0032] The control unit 2 is located outside the tower body 1. The control unit 2 has an integrated STM8S207S8T6C controller, which is used to regulate the electrical components inside the equipment.

[0033] The spraying mechanism 4 includes a feed pipe 44 and a conveying hose 45. The feed pipe 44 is located in the feed inlet on the upper side of the outer arc surface of the tower body 1. A feed valve is connected in series in the middle of the feed pipe 44. The rear end of the feed pipe 44 is connected to the conveying port at the front end of the conveying hose 45. The spraying mechanism 4 also includes guide slides 41, mounting plates 42, connecting pipes 43, mounting pipes 46, and nozzles 47. The guide slides 41 are respectively located on the upper side inside the tower body 1. The guide slides 41 are slidably connected to the guide slide holes corresponding to the right end of the mounting plate 42. A fixing column is provided in the middle of the upper end of the mounting plate 42. Connecting pipes are provided in the clearance grooves opened on the front side of the upper end of the mounting plate 42. 43. The lower end of the conveying hose 45 is connected to the connection port at the upper end of the connecting pipe 43. The lower end of the connecting pipe 43 is connected to the feeding port at the upper end of the installation pipe 46. The spray nozzles 47 are installed in the spray ports at the lower end of the installation pipe 46. During operation, as the flue gas from the cupola floats upward, the feed valve is opened, and the calcium carbonate solution is injected into the inside of the conveying hose 45 through the feed pipe 44. The conveying hose 45 is injected into the inside of the installation pipe 46 through the connecting pipe 43, and finally sprayed out through the nozzles 47. As the calcium carbonate solution falls, it adsorbs the sulfur dioxide in the flue gas from the cupola and finally accumulates at the bottom of the tower body 1.

[0034] The mixing mechanism 5 is located inside the tower body 1. The mixing mechanism 5 includes a rotating cylinder 51, a transmission plate 52, a vertical plate 53, an output rod 54, stirring blades 55, a drive motor 56, a drive bevel gear 57, and bevel gears 58. The rotating cylinder 51 is rotatably connected to the middle of the bottom wall of the tower body 1 via bearings. The transmission plate 52 is located on the upper side of the outer arc surface of the rotating cylinder 51, and the vertical plate 53 is located at the upper end of the transmission plate 52. The output rod 54 is rotatably connected to the interior of the rotating cylinder 51 via sealed bearings. Stirring blades 55 are located on the upper side of the outer arc surface of the output rod 54. The drive motor 56 is located in a cavity opened on the lower side inside the tower body 1. The drive bevel gear 57 is located at the left end of the output shaft of the drive motor 56. The bevel gears 58 are located on the lower side of the outer arc surfaces of the rotating cylinder 51 and the output rod 54, respectively. Both bevel gears 58 mesh with the drive bevel gears 57. When the calcium carbonate solution containing sulfur dioxide accumulates at the bottom of the tower body 1, the drive motor 56 starts operating through the control equipment. The output shaft of the drive motor 56 drives the drive bevel gear 57 to rotate. The drive bevel gear 57, through meshing connection, drives the lower bevel gear 58 to rotate, which in turn drives the stirring fan blade 55 to rotate via the output rod 54, thereby stirring and mixing the sulfur dioxide and calcium carbonate solution. During the rotation of the output rod 54, the drive bevel gear 47, through meshing connection, drives the upper bevel gear 58 to rotate, which in turn drives the vertical plate 53 to rotate via the rotating cylinder 51. The rotating cylinder 51 and the output rod 54 rotate in opposite directions, further increasing the contact area between the sulfur dioxide and calcium carbonate solution, making the calcium carbonate solution react more fully and preventing waste of calcium carbonate solution. Through the cooperative arrangement of the drive bevel gear 47 and bevel gear 48, the sulfur dioxide and calcium carbonate solution can be stirred in multiple directions during the stirring process, further increasing the contact area between the sulfur dioxide and calcium carbonate solution while preventing gypsum from settling to the bottom, thus improving the stirring efficiency.

[0035] A sealing structure 6 is disposed inside the tower body 1 and is fixedly connected to the lower side of the outer arc surface of the tower body 1. The sealing structure 6 includes a protective cover 61, a guide slide 62, a sealing plate 63, a mounting base 64, an adjusting base 66, and a connecting rod 67. The protective cover 61 is fixedly connected to the lower side of the outer arc surface of the tower body 1. The guide slide 62 is disposed on the left side of the inner arc surface of the tower body 1. The mounting base 64 is slidably connected inside the guide slide 62. The sealing plate 63 is disposed at the right end of the mounting base 64. The adjusting base 66 is connected to the protective cover. The top wall of 61 is slidably connected. A connecting rod 67 is rotatably connected to the adjusting groove at the lower end of the adjusting seat 66 via a pin. The lower end of the connecting rod 67 is rotatably connected to the left end of the mounting base 64 via a pin. The sealing structure 6 also includes a screw 65 and an adjusting motor 68. The screw 65 is rotatably connected to the upper side inside the protective cover 61 via a bearing. The screw 65 is threadedly connected to a threaded hole at the upper side of the left end of the adjusting seat 66. The adjusting motor 68 is located at the left end of the protective cover 61. The right side of the output shaft of the adjusting motor 68... The left end of the screw 65 is fixedly connected to the end of the regulating motor 68, and the input end of the regulating motor 68 is electrically connected to the output end of the control unit 2. When the air pressure inside the air inlet pipe 7 is less than the set value, the regulating motor 68 starts to run through the control equipment. The output shaft of the regulating motor 68 drives the screw 65 to rotate. The screw 65 drives the regulating seat 66 to move to the right through the threaded connection. During the movement to the right, the regulating seat 66 applies a downward pressure to the mounting seat 64 through the connecting rod 67. This causes the sealing plate 63 to move downward along the guide groove 62 through the mounting seat 64, sealing the air inlet and preventing the slurry inside the tower body 1 from flowing back into the air inlet pipe 7. Through the cooperation of the mounting seat 64 and the regulating seat 66, the position of the sealing plate 63 can be adjusted, replacing the traditional method of sealing the air inlet through the solenoid valve. This solves the problem of the solenoid valve getting stuck during the closing process due to scale buildup inside the air inlet pipe 7, and further prevents the slurry inside the tower body 1 from flowing back into the air inlet pipe 7.

[0036] It also includes a connecting plate 9, a protective box 10, a limiting slide 13, an adjusting plate 14, and a fixing plate 15. The connecting plate 9 is located at the upper end of the fixing column, the limiting slide 13 is located on the right side of the upper end of the connecting plate 9, the adjusting plate 14 is located on the left side of the lower end of the connecting plate 9, and the fixing plate 15 is located on the right side of the upper end of the connecting plate 9. The adjusting plate 14 is located on the left side of the limiting slide 13, and the fixing plate 15 is located on the right side of the limiting slide 13. The protective box 10 is located on the right side of the inner arc surface of the tower body 1 and is located on the upper side of the connecting plate 9. The connecting plate 9 drives the mounting plate 42 to move to the right through the fixing column, and the mounting plate 42 drives the nozzle 47 to move to the right, thereby adjusting the spraying position of the nozzle 47.

[0037] It also includes a pole 11, a cam 12, and a servo motor 16. The servo motor 16 is located on the left side of the bottom wall of the protective box 10. The pole 11 is located at the lower end of the output shaft of the servo motor 16. The pole 11 is located inside the limiting slide groove 13. The cam 12 is located on the upper and lower sides of the outer arc surface of the pole 11. The outer arc surface of the lower cam 12 contacts the right surface of the adjusting plate 14, and the outer arc surface of the upper cam 12 contacts the left surface of the fixing plate 15. The input end of the servo motor 16 is electrically connected to the output end of the control unit 2. Through the cooperation of the adjusting plate 14 and the fixing plate 15 with the cam 12, the nozzle 47 can be driven to perform lateral reciprocating motion during the operation of the nozzle 47, which increases the coverage area of ​​the nozzle 47. The structure is simple, and the whole process can be completed by only one motor.

[0038] It also includes an air inlet pipe 7 and a pressure detector 8. The air inlet pipe 7 is located in the air inlet on the left side of the outer arc surface of the tower body 1. An air inlet valve is connected in series in the middle of the air inlet pipe 7. The air inlet pipe 7 is located on the lower side of the protective cover 61. The pressure detector 8 is located in the mounting groove on the right side of the outer arc surface of the air inlet pipe 7. The probe at the lower end of the pressure detector 8 is located inside the air inlet pipe 7. The pressure detector 8 is bidirectionally electrically connected to the control unit 2. During operation, the external gas supply equipment injects the cupola flue gas into the air inlet pipe 7. The pressure detector 8 detects the air pressure inside the air inlet pipe 7 in real time and transmits the detected data to the control unit 2.

[0039] The working principle of the cupola flue gas purification equipment provided by this invention is as follows:

[0040] Before use, the equipment is moved to the designated work location using an external traction device, and the tower body 1 is installed and connected with the corresponding workstation to support and fix the tower body 1 and its internal equipment. Then, the inlet pipe 7, feed pipe 44, and discharge pipe 17 are connected to the external pipeline. During operation, the external gas supply equipment injects cupola flue gas into the inlet pipe 7. The pressure detector 8 monitors the pressure inside the inlet pipe 7 in real time and transmits the data to the control unit 2. When the pressure reaches the set value, the inlet valve is opened, and the cupola flue gas is injected into the tower body 1 through the inlet pipe 7. When the pressure inside the inlet pipe 7 is lower than the set value, the control unit 2 regulates the operation of the motor 68, which then starts running. The output shaft of the motor 68 is adjusted... The rotating screw 65 drives the adjusting seat 66 to move to the right via a threaded connection. During this movement, the adjusting seat 66 applies downward pressure to the mounting seat 64 via the connecting rod 67. This pressure, in turn, causes the sealing plate 63 to move downwards along the guide groove 62, sealing the air inlet and preventing the slurry inside the tower body 1 from flowing back into the air inlet pipe 7. Subsequent on-site personnel can then close the air inlet valve. During operation, as the cupola flue gas rises, the feed valve is opened, injecting calcium carbonate solution into the conveying hose 45 through the feed pipe 44. The conveying hose 45 then injects the solution into the mounting pipe 46 via the connecting pipe 43, and finally sprays it out through the nozzle 47. As the calcium carbonate solution falls, the carbonate... The calcium solution adsorbs sulfur dioxide from the cupola flue gas, which then accumulates at the bottom of tower 1. During the spraying of calcium carbonate solution by nozzle 47, the servo motor 16 starts operating under the control of the control unit 2. The servo motor 16 drives the upright 11 to rotate, and the upright 11 drives the two cams 12 to rotate. When the contact point between the upper cam 12 and the fixed plate 15 changes from proximal to distal, the contact point between the lower cam 12 and the adjusting plate 14 changes from distal to proximal. The upper cam 12 drives the connecting plate 9 to move to the right through the fixed plate 15, causing the connecting plate 9 to drive the mounting plate 42 to move to the right through the fixed column. The mounting plate 42 drives the nozzle 47 to move to the right. When the contact point between the lower cam 12 and the adjusting plate 14 changes from proximal to distal... During the change, the contact point between the upper cam 12 and the fixed plate 15 changes from the distal to the proximal. At this time, the lower cam 12 drives the connecting plate 9 to move to the left through the adjusting plate 14, causing the adjusting plate 14 to drive the mounting plate 42 to move to the left through the fixed column. The mounting plate 42 drives the nozzle 47 to move to the left, thereby increasing the spraying area of ​​the nozzle 47. After the calcium carbonate solution containing sulfur dioxide accumulates at the bottom of the tower body 1, the drive motor 56 starts to run through the control unit 2. The output shaft of the drive motor 56 drives the drive bevel gear 57 to rotate. The drive bevel gear 57 drives the lower bevel gear 58 to rotate through meshing connection, which in turn drives the stirring fan blade 55 to rotate through the output rod 54, thereby stirring and mixing the sulfur dioxide and calcium carbonate solution.During the rotation of the output rod 54, the drive bevel gear 47 meshes with the upper bevel gear 58, which in turn rotates the vertical plate 53 via the rotating cylinder 51. The rotating cylinder 51 and the output rod 54 rotate in opposite directions, further increasing the contact area between sulfur dioxide and the calcium carbonate solution, allowing for a more complete reaction of the calcium carbonate solution and preventing waste. Finally, the discharge valve is opened, and the external gypsum discharge pump discharges the gypsum produced by the reaction of sulfur dioxide and calcium carbonate solution through the discharge pipe 17. The cupola flue gas, after desulfurization and purification, is then discharged through the exhaust pipe 3.

[0041] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A cupola furnace flue gas purification device, characterized in that: It includes a tower body (1), a spraying mechanism (4), a mixing mechanism (5), and a sealing structure (6); An exhaust pipe (3) is installed in the exhaust port at the upper end of the tower body (1), and a discharge pipe (17) is installed in the discharge port at the lower side of the outer arc surface of the tower body (1). A discharge valve is connected in series in the middle of the discharge pipe (17). The spraying mechanism (4) includes a feed pipe (44) and a conveying hose (45). The feed pipe (44) is located in the feed port opened on the upper side of the outer arc surface of the tower body (1). A feed valve is connected in series in the middle of the feed pipe (44). The rear end of the feed pipe (44) is connected to the conveying port set at the front end of the conveying hose (45). The mixing mechanism (5) is located inside the tower body (1). The mixing mechanism (5) includes a rotating cylinder (51), a transmission plate (52), a vertical plate (53), an output rod (54), a stirring fan blade (55), a drive motor (56), a drive bevel gear (57), and a bevel gear (58). The rotating cylinder (51) is rotatably connected to the middle of the bottom wall of the tower body (1) through a bearing. The transmission plate (52) is provided on the upper side of the outer arc surface of the rotating cylinder (51). The upper end of the transmission plate (52) is provided with a vertical plate (53). The output rod (54) is rotatably connected to the inside of the rotating cylinder (51) through a sealed bearing. The upper side of the outer arc surface of the output rod (54) is provided with stirring blades (55). The drive motor (56) is located in the cavity opened on the lower side inside the tower body (1). The left end of the output shaft of the drive motor (56) is provided with a drive bevel gear (57). The bevel gears (58) are respectively located on the lower side of the outer arc surface of the rotating cylinder (51) and the output rod (54). The bevel gears (58) are meshed with the drive bevel gears (57). A sealing structure (6) is installed inside the tower body (1). The sealing structure (6) is fixedly connected to the lower side of the outer arc surface of the tower body (1). The sealing structure (6) includes a protective cover (61), a guide groove (62), a sealing plate (63), a mounting base (64), an adjusting base (66), and a connecting rod (67). The protective cover (61) is fixedly connected to the lower side of the outer arc surface of the tower body (1). The guide groove (62) is located on the left side of the inner arc surface of the tower body (1). The mounting base (64) is slidably connected inside the guide groove (62). A sealing plate (63) is provided at the right end of the mounting base (64). The adjusting base (66) and the protective cover (61) are connected to each other. The top wall of the sealing structure (6) is slidably connected, and the lower end of the adjusting seat (66) is provided with an adjusting groove and a connecting rod (67) is rotatably connected by a pin. The lower end of the connecting rod (67) is rotatably connected to the left end of the mounting seat (64) by a pin. The sealing structure (6) also includes a screw (65) and an adjusting motor (68). The screw (65) is rotatably connected to the upper side inside the protective cover (61) by a bearing. The screw (65) is threadedly connected to the threaded hole provided on the upper side of the left end of the adjusting seat (66). The adjusting motor (68) is located at the left end of the protective cover (61). The right end of the output shaft of the adjusting motor (68) is fixedly connected to the left end of the screw (65).

2. The cupola flue gas purification equipment according to claim 1, characterized in that: The spraying mechanism (4) also includes a guide slide column (41), a mounting plate (42), a connecting pipe (43), a mounting pipe (46), and a nozzle (47). The guide slide column (41) is respectively set on the upper side inside the tower body (1). The guide slide column (41) is slidably connected to the guide slide hole corresponding to the right end of the mounting plate (42). A fixed column is set in the middle of the upper end of the mounting plate (42). A connecting pipe (43) is set in the clearance groove opened on the front side of the upper end of the mounting plate (42). The lower end of the conveying hose (45) is connected to the connection port set on the upper end of the connecting pipe (43). The lower end of the connecting pipe (43) is connected to the feeding port opened on the upper end of the mounting pipe (46). A nozzle (47) is set in the spray port opened on the lower end of the mounting pipe (46).

3. The cupola flue gas purification equipment according to claim 2, characterized in that: It also includes a connecting plate (9), a protective box (10), a limiting slide (13), an adjusting plate (14), and a fixing plate (15). The connecting plate (9) is located at the upper end of the fixing column, the limiting slide (13) is located on the right side of the upper end of the connecting plate (9), the adjusting plate (14) is located on the left side of the lower end of the connecting plate (9), the fixing plate (15) is located on the right side of the upper end of the connecting plate (9), the adjusting plate (14) is located on the left side of the limiting slide (13), the fixing plate (15) is located on the right side of the limiting slide (13), the protective box (10) is located on the right side of the inner arc surface of the tower body (1), and the protective box (10) is located on the upper side of the connecting plate (9). The connecting plate (9) drives the mounting plate (42) to move to the right through the fixing column, and the mounting plate (42) drives the nozzle (47) to move to the right, thereby adjusting the spraying position of the nozzle (47).

4. The cupola flue gas purification equipment according to claim 3, characterized in that: It also includes a pole (11), a cam (12) and a servo motor (16). The servo motor (16) is located on the left side of the bottom wall of the protective box (10). The pole (11) is located at the lower end of the output shaft of the servo motor (16). The pole (11) is located inside the limiting slide groove (13). The cam (12) is located on the upper and lower sides of the outer arc surface of the pole (11). The outer arc surface of the lower cam (12) contacts the right surface of the adjusting plate (14), and the outer arc surface of the upper cam (12) contacts the left surface of the fixing plate (15).

5. The cupola flue gas purification equipment according to claim 4, characterized in that: It also includes an air inlet pipe (7) and a pressure detector (8). The air inlet pipe (7) is located in the air inlet on the left side of the outer arc surface of the tower body (1). An air inlet valve is connected in series in the middle of the air inlet pipe (7). The air inlet pipe (7) is located on the lower side of the protective cover (61). The pressure detector (8) is located in the mounting groove on the right side of the outer arc surface of the air inlet pipe (7). The probe at the lower end of the pressure detector (8) is located inside the air inlet pipe (7).

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