Industrial waste gas desulfurization, denitrification and dust removal equipment

Abstract

The present invention relates to the technical field of waste gas treatment, and particularly to an industrial waste gas desulfurization, denitrification and dust removal device, which includes a treatment tank. A storage tank is fixed on the outer wall of the treatment tank. An air inlet and an air outlet are provided on the side wall of the treatment tank. Between the air inlet and the air outlet and inside the treatment tank, a plurality of net plates are arranged in an up-and-down distribution. A spraying mechanism and a cleaning mechanism are arranged above each net plate. The spraying mechanism is used for desulfurization and denitrification treatment of the waste gas, and the cleaning mechanism is used for cleaning the dust on the surface of the net plate. Among them, a notch is provided at the edge position of the net plate. The present invention intercepts the dust in the waste gas through the net plate. When intercepting the dust, the cleaning mechanism can automatically clean the dust on the surface of the net plate, and the cleaned dust will directly fall from the notch at the edge position of the net plate and finally land at the bottom of the treatment tank, solving the problem in the prior art that it is necessary to stop the machine to clean the surface of the net plate and ensuring the waste gas treatment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, specifically industrial waste gas desulfurization, denitrification and dust removal equipment. Background Technique

[0002] Waste gas purification mainly refers to the work of treating industrial waste gas generated in industrial sites, such as dust particles, flue gas soot, odor gas, toxic and harmful gas. Common waste gas purifications include factory soot waste gas purification, workshop dust waste gas purification, organic waste gas purification, waste gas odor purification, acid-base waste gas purification, chemical waste gas purification, etc. And some industrial waste gas contains sulfur, nitrate, dust and other harmful substances.

[0003] In the prior art, when desulfurizing, denitrifying and dust removing industrial waste gas, most of them use a mesh plate to intercept the dust in the waste gas, and then use a reaction liquid to desulfurize and denitrify the waste gas. However, when intercepting the dust through the mesh plate, a large amount of dust will be adsorbed on the surface of the mesh plate after long-term use, affecting the exhaust effect. This requires shutting down the machine to clean the surface of the mesh plate, wasting time and reducing the waste gas treatment efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide industrial waste gas desulfurization, denitrification and dust removal equipment to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] Industrial waste gas desulfurization, denitrification and dust removal equipment, including a treatment tank. A storage tank is fixed on the outer wall of the treatment tank. An air inlet and an air outlet are provided on the side wall of the treatment tank. Between the air inlet and the air outlet and inside the treatment tank, a plurality of mesh plates are arranged vertically. The mesh plates are in the shape of an inverted funnel. A spraying mechanism and a cleaning mechanism are provided above each mesh plate. The spraying mechanism is used for desulfurization and denitrification treatment of waste gas, and the cleaning mechanism is used for cleaning the dust on the surface of the mesh plate. A notch is provided at the edge position of the mesh plate. A motor is fixed at the bottom outside the treatment tank, and a rotating rod is fixed at the output end of the motor. The rotating rod penetrates the bottom of the treatment tank and is rotatably connected to the bottom of the treatment tank. When the motor drives the rotating rod to rotate, the rotating rod drives the spraying mechanism and the cleaning mechanism to operate. A sewage discharge pipe is provided at the lower part of the side wall of the treatment tank; when the equipment is used for desulfurization, denitrification and dust removal of industrial waste gas, the mesh plates filter the dust in the waste gas, and a spraying mechanism is provided above each mesh plate. When treating the waste gas, the motor at the bottom of the treatment tank can also be started. The motor drives the rotating rod to rotate, and the rotating rod drives the spraying mechanism to operate. The spraying mechanism extracts the reaction liquid inside the storage tank and sprays the reaction liquid inside the treatment tank. The nitrification and sulfide acidic substances in the waste gas are removed through an acid-base neutralization reaction, so as to achieve the purpose of desulfurization and denitrification. At the same time, when the rotating rod rotates, it also drives the cleaning mechanism to operate. The cleaning mechanism cleans the dust on the surface of the mesh plate. The cleaned dust will directly fall from the notch at the edge position of the mesh plate and finally fall to the bottom of the treatment tank, thus achieving a cleaning effect on the dust on the surface of the mesh plate.

[0007] Preferably: The cleaning mechanism includes a transmission rod that penetrates the mesh plate and the top of the treatment tank. A brush plate is fixed outside the transmission rod, and the brush plate is arranged parallel to the mesh plate. The upper end of the transmission rod is connected with a lifting component, and the lower end of the transmission rod is connected with a transmission component. When the lifting component drives the transmission rod to move to the lowest point, the rotating rod rotates and drives the transmission rod to rotate through the transmission component at the same time; the rotating rod drives the transmission rod to rotate through the transmission component, and the transmission rod drives the brush plate to rotate while rotating. The brush plate cleans the surface of the mesh plate, so that the dust on the surface of the mesh plate can fall from the notch. When it is not necessary to clean the surface of the brush plate, the lifting component drives the transmission rod to move upward. On the one hand, it separates the brush plate from the mesh plate, and on the other hand, it makes the rotating rod unable to drive the transmission rod to rotate through the transmission component. At this time, even if the rotating rod continues to rotate, the transmission rod cannot drive the brush plate to clean the surface of the mesh plate. The lifting component and the transmission component enable the equipment to selectively clean the surface of the mesh plate, avoiding damage to the brush plate and the mesh plate caused by long-term contact between the brush plate and the mesh plate, and effectively improving the service life of the equipment.

[0008] Preferably: The transmission component includes a limiting groove provided at the bottom of the transmission rod, and a limiting column adapted to the limiting groove is fixed at the top of the rotating rod.

[0009] Preferably, the lifting assembly includes a fixing plate disposed outside the transmission rod. The fixing plate is rotatably connected to the transmission rod. The top of the processing box is fixed with symmetrically distributed limiting rods. The limiting rods penetrate through the fixing plate and are slidably connected to the fixing plate. First elastic members are provided outside the limiting rods, and two ends of each first elastic member are respectively connected to the fixing plate and the top of the processing box. Symmetrically distributed pin rods penetrate through the side wall of the fixing plate. The pin rods are connected to the side wall of the fixing plate through second elastic members. A pin groove adapted to the pin rod is provided on the side wall of the limiting rod.

[0010] Preferably, the mesh plate is connected with a vibration assembly. When the transmission rod rotates, the vibration assembly is used to drive the mesh plate to vibrate up and down.

[0011] Preferably, the vibration assembly includes symmetrically distributed support plates fixedly connected to the inner wall of the processing box. Guide rods are fixedly connected to the tops of the support plates. A connecting plate is fixedly connected to the bottom of the mesh plate. The guide rods penetrate through the connecting plate and are slidably connected to the connecting plate. A third elastic member is provided outside the guide rods, and two ends of the third elastic member are respectively fixedly connected to the connecting plate and the support plate. An extrusion member is provided outside the transmission rod. When the transmission rod rotates, the extrusion member is used to periodically extrude the connecting plate.

[0012] Preferably, the extrusion member includes a rotating member fixed to the outside of the rotating rod. Symmetrically distributed extrusion bumps are fixedly connected to the top of the rotating member. Symmetrically distributed extrusion columns are fixedly connected to the bottom of the connecting plate.

[0013] Preferably, the spraying mechanism includes an atomizing spray plate disposed above the mesh plate. The atomizing spray irrigation is fixed inside the processing box through symmetrically distributed branch pipes. A plurality of pressure cylinders are fixedly connected to the inner wall of the storage tank. The pressure cylinders are communicated with one of the branch pipes. A piston is provided on the side of the pressure cylinder away from the inside of the storage tank. The piston is fixedly connected to a support rod. A limiting plate is fixedly connected to the inner wall of the storage tank. The support rod penetrates through the limiting plate and is slidably connected to the limiting plate. The support rod is connected with a pushing assembly. The pushing assembly is used to drive the support rod to reciprocate.

[0014] Preferably, the pushing assembly includes a connecting rod rotatably connected to the end of the support rod. The end of the connecting rod away from the support rod is rotatably connected to a movable rod. The movable rod penetrates through the bottom of the storage tank and is slidably connected to the bottom of the storage tank. A turntable is provided below the storage tank. One side of the turntable is connected with a rotating member. The rotating member is used to drive the turntable to rotate. An eccentrically arranged extrusion block is fixedly connected to the other side of the turntable. A limiting frame is slidably connected to the outside of the extrusion block. The limiting frame is fixedly connected to the bottom of the movable rod.

[0015] Preferably, the rotating member includes a first helical gear fixed outside the rotating rod. The first helical gear meshes with a second helical gear, and the second helical gear is fixedly connected to a rotating shaft. The rotating shaft penetrates through the side wall of the processing box and is rotatably connected to the side wall of the processing box. One end of the rotating rod away from the second helical gear is fixedly connected to the turntable.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: When the present invention performs desulfurization and denitrification treatment on waste gas, the dust in the waste gas is intercepted by the mesh plate. When intercepting the dust, the motor drives the rotating rod to rotate. The rotating rod drives the transmission rod to rotate through the cooperation of the limiting column and the limiting groove, and the transmission rod drives the brush plate to rotate so as to clean the surface of the mesh plate. The cleaned dust will directly fall from the notch at the edge of the mesh plate and finally fall to the bottom of the processing box, solving the problem in the prior art that it is necessary to stop the machine to clean the surface of the mesh plate and ensuring the waste gas treatment effect.

[0017] In addition, when the rotating rod rotates, it also drives the rotating member to rotate. The rotating member drives the extrusion bump on its top to perform circular motion. When the extrusion bump rotates to a certain position, the extrusion bump extrudes the extrusion column, so that the extrusion column drives the mesh plate to move upward through the connecting plate. When the extrusion bump rotates to the other side of the extrusion column, the extrusion bump no longer extrudes the extrusion column, and the connecting plate automatically resets to drive the mesh plate to move downward. In this way, the mesh plate can continuously move up and down, and cooperate with the circular motion of the brush plate, which can effectively improve the cleaning effect of the brush plate on the dust on the surface of the mesh plate.

[0018] When it is not necessary to clean the dust on the surface of the mesh plate, move the transmission rod upward, so that the brush plate is separated from the mesh plate, and the limiting column is located inside the limiting groove. At this time, even if the rotating rod drives the limiting column to rotate, the limiting column cannot drive the transmission rod to rotate through the limiting groove, which can play a selective cleaning role on the surface of the mesh plate, avoiding the damage to the brush plate and the mesh plate caused by the long-term contact between the brush plate and the mesh plate, and improving the service life of the equipment. Description of the Drawings

[0019] Figure 1 Schematic diagram of the external structure of the processing box in the embodiment of the present invention Figure 1 。

[0020] Figure 2 Schematic diagram of the external structure of the processing box in the embodiment of the present invention Figure 2 。

[0021] Figure 3 Schematic diagram of the internal structure of the processing box in the embodiment of the present invention.

[0022] Figure 4 Schematic diagram of the connection structure of the mesh plate in the embodiment of the present invention.

[0023] Figure 5 Schematic diagram of the connection structure between the rotating rod and the transmission rod in the embodiment of the present invention.

[0024] Figure 6 Schematic diagram of the connection structure between the transmission rod and the fixing plate in the embodiment of the present invention.

[0025] Figure 7 Schematic diagram of the internal structure of the storage box in the embodiment of the present invention.

[0026] In the figure: 1 - processing box; 2 - storage box; 3 - cleaning mechanism; 31 - transmission rod; 32 - brush plate; 33 - limiting groove; 34 - limiting post; 35 - fixing plate; 36 - limiting rod; 37 - first elastic member; 38 - second elastic member; 39 - pin rod; 310 - pin slot; 311 - rotating member; 312 - connecting plate; 313 - third elastic member; 314 - guiding rod; 315 - supporting plate; 316 - extrusion post; 317 - extrusion bump; 4 - spraying mechanism; 41 - atomizing spray plate; 42 - branch pipe; 43 - pressure cylinder; 44 - piston; 45 - support rod; 46 - limiting plate; 47 - connecting rod; 48 - movable rod; 49 - turntable; 410 - limiting frame; 411 - extrusion block; 412 - rotating shaft; 413 - first helical gear; 414 - second helical gear; 5 - mesh plate; 6 - notch; 7 - rotating rod; 8 - motor; 9 - sewage pipe; 10 - air inlet; 11 - air outlet. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to 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 used to limit the present invention.

[0028] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0029] In one embodiment, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, an industrial waste gas desulfurization, denitrification and dust removal device, including a treatment tank 1, a storage tank 2 is fixed on the outer wall of the treatment tank 1, an air inlet 10 and an air outlet 11 are provided on the side wall of the treatment tank 1. Between the air inlet 10 and the air outlet 11, a plurality of net plates 5 are arranged up and down inside the treatment tank 1. The net plates 5 are in the shape of an inverted funnel. A spraying mechanism 4 and a cleaning mechanism 3 are provided above each net plate 5. The spraying mechanism 4 is used for desulfurization and denitrification treatment of waste gas, and the cleaning mechanism 3 is used for cleaning the dust on the surface of the net plate 5. Among them, a notch 6 is provided at the edge position of the net plate 5. A motor 8 is fixed at the bottom of the outer part of the treatment tank 1. The output end of the motor 8 is fixed with a rotating rod 7. The rotating rod 7 penetrates the bottom of the treatment tank 1 and is rotationally connected with the bottom of the treatment tank 1. When the motor 8 drives the rotating rod 7 to rotate, the rotating rod 7 drives the spraying mechanism 4 and the cleaning mechanism 3 to operate. A sewage discharge pipe 9 is provided at the lower part of the side wall of the treatment tank 1.

[0030] In this embodiment, when the device desulfurizes, denitrifies and removes dust from industrial waste gas, the industrial waste gas enters the inside of the treatment tank 1 through the air inlet 10 and flows downward, and finally discharges from the air outlet 11. During the flow of the waste gas, the waste gas will pass through the inside of the net plate 5, and the net plate 5 filters the dust in the waste gas. The number of the net plates 5 can be three or more. Through the setting of multiple net plates 5, the treatment effect on the waste gas can be effectively improved. And a spraying mechanism 4 is provided above each net plate 5. When treating the waste gas, the motor 8 at the bottom of the treatment tank 1 can also be started. The motor 8 drives the rotating rod 7 to rotate, and the rotating rod 7 drives the spraying mechanism 4 to operate. The spraying mechanism 4 extracts the reaction liquid inside the storage tank 2 and sprays the reaction liquid inside the treatment tank 1. The reaction liquid can be an alkaline solution. Through the acid-base neutralization reaction, the nitrification and sulfide acidic substances in the waste gas are removed, so as to achieve the purpose of desulfurization and denitrification. And a spraying mechanism 4 is provided above each net plate 5. Through the setting of multiple spraying mechanisms 4, the reaction liquid can fully react with the nitrification and sulfide substances, effectively improving the desulfurization and denitrification effect. A feeding port can also be set at the top of the storage tank 2, and the reaction liquid is added into the storage tank 2 through the feeding port, so as to ensure the amount of the reaction liquid inside the storage tank 2. In addition, when the rotating rod 7 rotates, it also drives the cleaning mechanism 3 to operate. The cleaning mechanism 3 cleans the dust on the surface of the net plate 5. Since the net plate 5 is in the shape of an inverted funnel, the cleaned dust will directly fall from the notch 6 at the edge position of the net plate 5 and finally fall to the bottom of the treatment tank 1, thus achieving a cleaning effect on the dust on the surface of the net plate 5, avoiding the phenomenon that the dust blocks the mesh holes, enabling the waste gas to smoothly pass through the mesh holes, ensuring the desulfurization, denitrification and dust removal efficiency, and at the same time, there is no need for manual cleaning of the surface of the net plate 5, saving manpower. A valve can also be set on the sewage discharge pipe 9. When there is more dust or reaction product liquid inside the treatment tank 1, the valve is opened to directly discharge the dust and the reaction product liquid.

[0031] Please refer to Figure 3 , the cleaning mechanism 3 includes a transmission rod 31 passing through the net plate 5 and the top of the processing box 1. A brush plate 32 is fixed to the outside of the transmission rod 31. The brush plate 32 is arranged parallel to the net plate 5. The upper end of the transmission rod 31 is connected to a lifting component, and the lower end of the transmission rod 31 is connected to a transmission component. When the lifting component drives the transmission rod 31 to move to the lowest point, the rotating rod 7 rotates and drives the transmission rod 31 to rotate through the transmission component at the same time;

[0032] When treating waste gas, the motor 8 drives the rotating rod 7 to rotate. The rotating rod 7 drives the transmission rod 31 to rotate through the transmission component. While the transmission rod 31 rotates, it drives the brush plate 32 to rotate. The brush plate 32 cleans the surface of the net plate 5, so that the dust on the surface of the net plate 5 can fall from the notch 6. When it is not necessary to clean the surface of the brush plate 32, the lifting component drives the transmission rod 31 to move upward. On the one hand, it separates the brush plate 32 from the net plate 5. On the other hand, it makes the rotating rod 7 unable to drive the transmission rod 31 to rotate through the transmission component. At this time, even if the rotating rod 7 continues to rotate, the transmission rod 31 cannot drive the brush plate 32 to clean the surface of the net plate 5. Through the lifting component and the transmission component, the device can selectively clean the surface of the net plate 5, avoiding the damage to the brush plate 32 and the net plate 5 caused by the long-term contact between the brush plate 32 and the net plate 5, and effectively improving the service life of the device.

[0033] Please refer to Figure 5 , the transmission component includes a limiting groove 33 arranged at the bottom of the transmission rod 31, and a limiting column 34 fixed to the top of the rotating rod 7 and adapted to the limiting groove 33;

[0034] When it is necessary to clean the dust on the surface of the net plate 5, the lifting component drives the transmission rod 31 to move downward, so that the brush plate 32 outside the transmission rod 31 contacts the net plate 5, and at the same time, the limiting column 34 at the top of the rotating rod 7 can be inserted into the limiting groove 33 at the bottom of the transmission rod 31. At this time, when the rotating rod 7 rotates, it can drive the transmission rod 31 to rotate through the cooperation of the limiting column 34 and the limiting groove 33, and then the transmission rod 31 drives the brush plate 32 to rotate to clean the surface of the net plate 5. The limiting column 34 and the limiting groove 33 can both be square. When it is not necessary to clean the dust on the surface of the net plate 5, the lifting component drives the transmission rod 31 to move upward. On the one hand, it separates the brush plate 32 from the net plate 5. On the other hand, it moves the bottom of the transmission rod 31 above the limiting column 34, losing the limitation of the limiting column 34. At this time, even if the rotating rod 7 drives the limiting column 34 to rotate, the limiting column 34 cannot drive the transmission rod 31 to rotate through the limiting groove 33, which can selectively clean the surface of the net plate 5, avoiding the damage to the brush plate 32 and the net plate 5 caused by the long-term contact between the brush plate 32 and the net plate 5, and improving the service life of the device.

[0035] Please refer to Figure 6 , the lifting assembly includes a fixing plate 35 arranged outside the transmission rod 31. The fixing plate 35 is rotatably connected to the transmission rod 31. The top of the processing box 1 is fixed with symmetrically distributed limiting rods 36. The limiting rods 36 penetrate through the fixing plate 35 and are slidably connected to the fixing plate 35. First elastic members 37 are arranged outside the limiting rods 36. Two ends of the first elastic members 37 are respectively connected to the fixing plate 35 and the top of the processing box 1. Symmetrically distributed pin rods 39 penetrate through the side wall of the fixing plate 35. The pin rods 39 are connected to the side wall of the fixing plate 35 through second elastic members 38. A pin slot 310 adapted to the pin rod 39 is arranged on the side wall of the limiting rod 36;

[0036] When it is necessary to clean the dust on the surface of the mesh plate 5, move the fixing plate 35 downward. The fixing plate 35 drives the transmission rod 31 to move downward. When the transmission rod 31 moves to the lowest point, at this time, the brush plate 32 contacts the mesh plate 5, the limiting column 34 is inserted into the limiting slot 33, and at the same time, the pin rod 39 is exactly aligned with the pin slot 310. Under the action of the second elastic member 38, the end of the pin rod 39 automatically enters the pin slot 310. The pin slot 310 plays a fixing role on the fixing plate 35 and the transmission rod 31 through the pin rod 39, effectively improving the stability of the transmission rod 31 during rotation. When it is not necessary to clean the dust on the surface of the mesh plate 5, pull out the pin rod 39 from the pin slot 310. Losing the limit of the pin slot 310, the fixing plate 35 drives the transmission rod 31 to move upward under the action of the first elastic member 37, so that the brush plate 32 is separated from the mesh plate 5, and the limiting column 34 is located inside the limiting slot 33. Both the first elastic member 37 and the second elastic member 38 can be springs.

[0037] Please refer to Figure 3 , the mesh plate 5 is connected with a vibration assembly. When the transmission rod 31 rotates, the vibration assembly is used to drive the mesh plate 5 to vibrate up and down;

[0038] When cleaning the dust on the surface of the mesh plate 5, while the rotating rod 7 drives the brush plate 32 to rotate, it also drives the vibration assembly to operate. Through the cooperation of the vibration assembly driving the mesh plate 5 to vibrate up and down and the brush plate 32, the cleaning effect of the dust on the surface of the mesh plate 5 can be effectively improved.

[0039] Please refer to Figure 3, the vibration assembly includes support plates 315 fixedly connected to the inner wall of the processing box 1 and symmetrically distributed. Guide rods 314 are fixedly mounted on the tops of the support plates 315. A connecting plate 312 is fixedly connected to the bottom of the mesh plate 5. The guide rods 314 penetrate through the connecting plate 312 and are slidably connected to the connecting plate 312. A third elastic member 313 is provided outside the guide rods 314. The two ends of the third elastic member 313 are fixedly connected to the connecting plate 312 and the support plate 315 respectively. An extrusion member is provided outside the transmission rod 31. When the transmission rod 31 rotates, the extrusion member is used to periodically extrude the connecting plate 312;

[0040] While the transmission rod 31 rotates, it periodically extrudes the connecting plate 312 through the extrusion member. When the extrusion member extrudes the connecting plate 312, the connecting plate 312 drives the mesh plate 5 to move upward. When the extrusion member no longer extrudes the connecting plate 312, the connecting plate 312 moves downward under the action of the third elastic member 313. This cycle repeats, enabling the mesh plate 5 to continuously vibrate up and down. And in cooperation with the circular motion of the brush plate 32, it can effectively improve the cleaning effect of the brush plate 32 on the dust on the surface of the mesh plate 5. The guide rods 314 can play a limiting role on the connecting plate 312, effectively improving the stability of the mesh plate 5 during up and down vibration. The third elastic member 313 can be a spring.

[0041] Please refer to Figure 3 , the extrusion member includes a rotating member 311 fixed to the outside of the rotating rod 7. Symmetrically distributed extrusion bumps 317 are fixed to the top of the rotating member 311. Symmetrically distributed extrusion columns 316 are fixed to the bottom of the connecting plate 312;

[0042] While the rotating rod 7 rotates, it also drives the rotating member 311 to rotate. The rotating member 311 drives the extrusion bumps 317 at its top to move in a circle. When the extrusion bumps 317 rotate to a certain position, the extrusion bumps 317 extrude the extrusion columns 316, so that the extrusion columns 316 drive the mesh plate 5 to move upward through the connecting plate 312. When the extrusion bumps 317 rotate to the other side of the extrusion columns 316, the extrusion bumps 317 no longer extrude the extrusion columns 316, and the connecting plate 312 drives the mesh plate 5 to move downward under the action of the third elastic member 313. This cycle repeats, enabling the mesh plate 5 to continuously vibrate up and down.

[0043] Please refer to Figure 3 and Figure 7, the spray mechanism 4 includes an atomizing spray plate 41 disposed above the mesh plate 5. The atomizing spray irrigation is fixed inside the treatment tank 1 through symmetrically distributed branch pipes 42. A plurality of pressure cylinders 43 are fixed to the inner wall of the storage tank 2. The pressure cylinder 43 is communicated with one of the branch pipes 42. A piston 44 is provided on the side of the pressure cylinder 43 away from the inside of the storage tank 2. The piston 44 is fixedly connected to a support rod 45. A limiting plate 46 is fixed to the inner wall of the storage tank 2. The support rod 45 penetrates through the limiting plate 46 and is slidably connected to the limiting plate 46. The support rod 45 is connected with a pushing assembly, and the pushing assembly is used to drive the support rod 45 to reciprocate;

[0044] When treating the waste gas, while the rotating rod 7 rotates, it drives the support rod 45 to reciprocate through the pushing assembly. The support rod 45 drives the piston 44 to reciprocate. When the piston 44 moves into the pressure cylinder 43, the piston 44 squeezes the reaction liquid inside the pressure cylinder 43, so that the reaction liquid enters the branch pipe 42. Finally, it is sprayed out by the atomizing spray plate 41 and reacts with the sulfurized and nitrified substances in the waste gas, thereby achieving the purpose of desulfurization and denitrification. When the piston 44 moves outside the pressure cylinder 43, the storage liquid inside the storage tank 2 automatically flows into the pressure cylinder 43.

[0045] Please refer to Figure 7 , the pushing assembly includes a connecting rod 47 rotatably connected to the end of the support rod 45. The end of the connecting rod 47 away from the support rod 45 is rotatably connected to a movable rod 48. The movable rod 48 penetrates through the bottom of the storage tank 2 and is slidably connected to the bottom of the storage tank 2. A turntable 49 is provided below the storage tank 2. One side of the turntable 49 is connected with a rotating member, and the rotating member is used to drive the turntable 49 to rotate. An eccentrically arranged extrusion block 411 is fixed to the other side of the turntable 49. A limiting frame 410 is slidably connected to the outside of the extrusion block 411. The limiting frame 410 is fixedly connected to the bottom of the movable rod 48;

[0046] When performing desulfurization and denitrification treatment on the waste gas, the rotating member drives the turntable 49 to rotate. The turntable 49 drives the extrusion block 411 outside it to perform a circular motion. While the extrusion block 411 performs a circular motion, it squeezes the limiting frame 410, so that the limiting frame 410 can continuously move up and down reciprocally, and then drives the movable rod 48 to move up and down reciprocally. Under the limitation of the limiting plate 46, during the up and down movement of the movable rod 48, it drives the support rod 45 to reciprocate through the connecting rod 47, so that the piston 44 can squeeze the reaction liquid inside the pressure cylinder 43 into the atomizing spray plate 41.

[0047] Please refer to Figure 7, the rotating member includes a first helical gear 413 fixed to the outside of the rotating rod 7. The first helical gear 413 meshes with a second helical gear 414. The second helical gear 414 is fixedly connected to a rotating shaft 412. The rotating shaft 412 penetrates the side wall of the processing tank 1 and is rotatably connected to the side wall of the processing tank 1. One end of the rotating rod 7 away from the second helical gear 414 is fixedly connected to the turntable 49;

[0048] When treating the waste gas, the motor 8 drives the rotating rod 7 to rotate. The rotating rod 7 drives the first bevel gear to rotate. The rotation of the first bevel gear drives the rotating shaft 412 to rotate through the engagement with the second bevel gear. The rotating shaft 412 drives the turntable 49 to rotate, so that the movable rod 48 can continuously move up and down reciprocally.

[0049] Working principle: When the device desulfurizes, denitrifies and removes dust from industrial waste gas, the industrial waste gas enters the inside of the processing tank 1 through the air inlet 10 and flows downward, and finally discharges from the air outlet 11. During the flow of the waste gas, the waste gas passes through the inside of the mesh plate 5, and the mesh plate 5 filters the dust in the waste gas. When treating the waste gas, the motor 8 at the bottom of the processing tank 1 can also be started. The motor 8 drives the rotating rod 7 to rotate. The rotating rod 7 drives the first bevel gear to rotate. The rotation of the first bevel gear drives the rotating shaft 412 to rotate through the engagement with the second bevel gear. The rotating shaft 412 drives the turntable 49 to rotate. The turntable 49 drives the extrusion block 411 outside it to do circular motion. While the extrusion block 411 does circular motion, it extrudes the limit frame 410, so that the limit frame 410 can continuously move up and down reciprocally, and then drives the movable rod 48 to move up and down reciprocally. Under the limitation of the limit plate 46, during the up and down movement of the movable rod 48, the support rod 45 is driven to reciprocate through the connecting rod 47. When the piston 44 moves into the pressure cylinder 43, the piston 44 extrudes the reaction liquid inside the pressure cylinder 43, so that the reaction liquid enters the branch pipe 42, and finally is sprayed out by the atomizing spray plate 41 and reacts with the sulfurized and nitrified substances in the waste gas, thereby achieving the purpose of desulfurization and denitrification;

[0050] When it is necessary to clean the dust on the surface of the screen plate 5, the fixed plate 35 is moved downward. The fixed plate 35 drives the transmission rod 31 to move downward. When the transmission rod 31 moves to the lowest point, at this time, the brush plate 32 contacts the screen plate 5, and the limit post 34 is inserted into the limit groove 33. At the same time, the pin rod 39 and the pin groove 310 are exactly aligned. Under the action of the second elastic member 38, the end of the pin rod 39 automatically enters the pin groove 310. The pin groove 310 plays a fixing role on the fixed plate 35 and the transmission rod 31 through the pin rod 39. At this time, while the rotating rod 7 rotates, it drives the transmission rod 31 to rotate through the cooperation of the limit post 34 and the limit groove 33. The transmission rod 31 drives the brush plate 32 to rotate to clean the surface of the screen plate 5. The dust cleaned will directly fall from the notch 6 at the edge of the screen plate 5 and finally fall on the bottom of the treatment box 1, thereby achieving a cleaning effect on the dust on the surface of the screen plate 5, avoiding the phenomenon that the dust blocks the mesh holes, enabling the waste gas to smoothly pass through the mesh holes, ensuring the desulfurization, denitrification and dust removal efficiency, and at the same time, there is no need for manual cleaning of the surface of the screen plate 5, saving manpower. In addition, while the rotating rod 7 rotates, it also drives the rotating member 311 to rotate. The rotating member 311 drives the extrusion bump 317 at its top to perform a circular motion. When the extrusion bump 317 rotates to a certain position, the extrusion bump 317 extrudes the extrusion column 316, so that the extrusion column 316 drives the screen plate 5 to move upward through the connecting plate 312. When the extrusion bump 317 rotates to the other side of the extrusion column 316, the extrusion bump 317 no longer extrudes the extrusion column 316. The connecting plate 312 drives the screen plate 5 to move downward under the action of the third elastic member 313. Repeating this cycle enables the screen plate 5 to continuously vibrate up and down, and in cooperation with the circular motion of the brush plate 32, it can effectively improve the cleaning effect of the brush plate 32 on the dust on the surface of the screen plate 5; when it is not necessary to clean the dust on the surface of the screen plate 5, the pin rod 39 is pulled out from the pin groove 310. Losing the limit of the pin groove 310, the fixed plate 35 drives the transmission rod 31 to move upward under the action of the first elastic member 37, so that the brush plate 32 is separated from the screen plate 5, and the limit post 34 is located inside the limit groove 33. At this time, even if the rotating rod 7 drives the limit post 34 to rotate, the limit post 34 cannot drive the transmission rod 31 to rotate through the limit groove 33, playing a selective cleaning role on the surface of the screen plate 5, avoiding the damage to the brush plate 32 and the screen plate 5 caused by the long-term contact between the brush plate 32 and the screen plate 5, and improving the service life of the device.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An industrial waste gas desulfurization, denitrification and dust removal device, comprising a treatment tank; characterized in that, A storage box is fixed on the outer wall of the treatment box. An air inlet and an air outlet are provided on the side wall of the treatment box. Between the air inlet and the air outlet and inside the treatment box, a plurality of mesh plates are arranged vertically. The mesh plates are in an inverted funnel shape. A spraying mechanism and a cleaning mechanism are provided above each mesh plate. The spraying mechanism is used for desulfurization and denitrification treatment of waste gas, and the cleaning mechanism is used for cleaning the dust on the surface of the mesh plate. A notch is provided at the edge position of the mesh plate. A motor is fixed at the outer bottom of the treatment box, and a rotating rod is fixed at the output end of the motor. The rotating rod penetrates through the bottom of the treatment box and is rotatably connected to the bottom of the treatment box. When the motor drives the rotating rod to rotate, the rotating rod drives the spraying mechanism and the cleaning mechanism to operate. A sewage pipe is provided at the lower part of the side wall of the treatment box; The cleaning mechanism includes a transmission rod that penetrates through the mesh plate and the top of the treatment box. A brush plate is fixed on the outer part of the transmission rod. The brush plate is arranged parallel to the mesh plate. An elevating component is connected to the upper end of the transmission rod, and a transmission component is connected to the lower end of the transmission rod. When the elevating component drives the transmission rod to move to the lowest point, the transmission rod rotates while being driven by the transmission component when the rotating rod rotates; The transmission component includes a limiting groove provided at the bottom of the transmission rod. A limiting post adapted to the limiting groove is fixed at the top of the rotating rod.

2. The industrial waste gas desulfurization, denitrification and dust removal equipment according to claim 1, characterized in that, The elevating component includes a fixing plate arranged on the outer part of the transmission rod. The fixing plate is rotatably connected to the transmission rod. Symmetrically distributed limiting rods are fixed at the top of the treatment box. The limiting rods penetrate through the fixing plate and are slidably connected to the fixing plate. First elastic members are arranged on the outer parts of the limiting rods. Two ends of each first elastic member are respectively connected to the fixing plate and the top of the treatment box. Symmetrically distributed pin rods penetrate through the side wall of the fixing plate. The pin rods are connected to the side wall of the fixing plate through second elastic members. A pin slot adapted to the pin rod is provided on the side wall of the limiting rod.

3. The industrial waste gas desulfurization, denitrification and dust removal equipment according to claim 1 or 2, characterized in that, The mesh plate is connected with a vibration component. When the transmission rod rotates, the vibration component is used to drive the mesh plate to vibrate up and down.

4. The industrial waste gas desulfurization, denitrification and dust removal equipment according to claim 3, characterized in that, The vibration component includes symmetrically distributed support plates fixedly connected to the inner wall of the treatment box. Guide rods are fixed on the tops of the support plates. A connecting plate is fixed at the bottom of the mesh plate. The guide rods penetrate through the connecting plate and are slidably connected to the connecting plate. A third elastic member is arranged on the outer part of the guide rod. Two ends of the third elastic member are respectively fixedly connected to the connecting plate and the support plate. An extrusion component is arranged on the outer part of the transmission rod. When the transmission rod rotates, the extrusion component is used to periodically extrude the connecting plate.

5. The industrial waste gas desulfurization, denitrification and dust removal equipment according to claim 4, characterized in that, The extrusion component includes a rotating member fixed on the outer part of the rotating rod. Symmetrically distributed extrusion bumps are fixed on the top of the rotating member. Symmetrically distributed extrusion columns are fixed at the bottom of the connecting plate.

6. The industrial waste gas desulfurization, denitrification and dust removal equipment according to claim 1, characterized in that The spraying mechanism includes an atomizing spray plate arranged above the mesh plate. The atomizing spray plate is fixed inside the treatment box through symmetrically distributed branch pipes. A plurality of pressure cylinders are fixed on the inner wall of the storage box. The pressure cylinders are communicated with one of the branch pipes. A piston is provided on the side of the pressure cylinder away from the inside of the storage box. The piston is fixedly connected with a support rod. A limiting plate is fixed on the inner wall of the storage box. The support rod penetrates through the limiting plate and is slidably connected to the limiting plate. The support rod is connected with a pushing component, and the pushing component is used to drive the support rod to reciprocate.

7. The industrial waste gas desulfurization, denitrification and dust removal equipment according to claim 6, characterized in that The driving assembly includes a connecting rod rotatably connected to the end of the support rod. One end of the connecting rod away from the support rod is rotatably connected to a movable rod. The movable rod passes through the bottom of the storage box and is slidably connected to the bottom of the storage box. A turntable is provided below the storage box. One side of the turntable is connected with a rotating component for driving the turntable to rotate. An eccentrically arranged extrusion block is fixed on the other side of the turntable. A limiting frame is slidably connected to the outside of the extrusion block, and the limiting frame is fixedly connected to the bottom of the movable rod.

8. The industrial waste gas desulfurization, denitrification and dust removal equipment according to claim 7, characterized in that, The rotating component includes a first helical gear fixed on the outside of the rotating rod. The first helical gear meshes with a second helical gear. The second helical gear is fixedly connected with a rotating shaft. The rotating shaft passes through the side wall of the processing box and is rotatably connected to the side wall of the processing box. The end of the rotating rod away from the second helical gear is fixedly connected to the turntable.

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