Dust filtering device for thermal power generation waste gas treatment

Abstract

The invention relates to the technical field of filtering devices, and discloses a dust filtering device for thermal power generation waste gas treatment, which comprises a base, a bracket is arranged at the top of the base, a dust removal mechanism is arranged at the top of the bracket, an air pipe fixedly communicates with the top of the dust removal mechanism, and a dust collection bin is fixedly connected to the bottom of the dust removal mechanism. A liquid spraying device is fixedly arranged at the top of the base, a stirring mechanism is arranged in the liquid spraying device, the front face of the liquid spraying device is communicated with a waste material box, an exhaust pipe is fixedly communicated with the top of the waste material box, and the dust removal mechanism comprises a tank body, an air inlet, a material guide plate, an impeller, a scraping plate, an activated carbon filter plate and an air outlet pipe. According to the present invention, with the device, the problem that the treatment efficiency is reduced due to the influence on the gas output due to the blockage of the activated carbon filtration plate due to the excessive accumulation of the smoke dust particles can be effectively prevented, the service life of the activated carbon filtration plate is effectively prolonged, the replacement frequency is reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of filtering devices, and particularly to a dust filtering device for waste gas treatment in thermal power generation. Background Technique

[0002] The dust filtering device for waste gas treatment in thermal power plants is a multi-link pollution control system, mainly used to remove various pollutants generated during the combustion process to meet environmental protection emission standards. The tail gas during the combustion process is one of the main sources of air pollution, and the pollutants it emits pose a serious threat to the environment, climate and human health, and also lead to a decrease in visibility (haze), affecting traffic and the ecosystem.

[0003] The patent with the publication number CN216703821U discloses a dust filtering device for waste gas treatment in thermal power generation, including a tank body and a fixed box. The upper end of the front surface of the inner cavity of the tank body is fixedly connected with a filter plate, and the middle end of the bottom of the inner cavity of the tank body is fixedly connected with an exhaust pipe. A fixing ring is sleeved on the outer surface of the upper end of the exhaust pipe, the upper surface of the fixing ring is fixedly connected with a second connecting rod, the top end of the second connecting rod is fixedly connected with a fixing block, and the middle end of the upper surface of the fixing block is fixedly connected with a motor box. The middle end of the top of the inner cavity of the motor box is fixedly connected with a first servo motor, and the output end of the first servo motor penetrates through the middle end of the upper surface of the motor box and is fixedly connected with a screw rod. The present invention is provided with a cleaning brush, a filter plate, a second servo motor and a first servo motor, achieving the purpose of good filtering effect, and solving the problem that the existing dust filtering device for waste gas treatment in thermal power generation has a poor filtering effect, resulting in the inability to filter dust cleanly during use and affecting environmental safety. However, it is difficult to clean the soot particles on the filter plate of the above device. Excessive accumulation of soot particles will block the activated carbon filter plate, affecting the air output, resulting in a reduction in treatment efficiency and increasing the maintenance cost of the device. Therefore, a dust filtering device for waste gas treatment in thermal power generation is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a dust filtering device for waste gas treatment in thermal power generation in view of the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a dust filtering device for flue gas treatment in thermal power generation, including a base, a bracket is arranged on the top of the base, a dust removal mechanism is arranged on the top of the bracket, an air duct is fixedly communicated with the top of the dust removal mechanism, a dust collection bin is fixedly connected to the bottom of the dust removal mechanism, a liquid spraying device is fixedly arranged on the top of the base, a stirring mechanism is arranged inside the liquid spraying device, a waste material box is communicated with the front of the liquid spraying device, an exhaust pipe is fixedly communicated with the top of the waste material box, and the dust removal mechanism includes: a tank body, an air inlet, a guide plate, an impeller, a scraping plate, an activated carbon filter plate, and an air outlet pipe. The guide plate is fixedly connected to the inner wall of the tank body, the air outlet pipe is fixedly communicated with the top of the tank body, the air inlet is fixedly communicated with the circumferential surface of the tank body, the activated carbon filter plate is fixedly connected to the inner wall of the air outlet pipe, the impeller is rotatably connected to the circumferential surface of the air outlet pipe, the scraping plate is fixedly connected to the circumferential surface of the impeller, the scraping plate contacts the bottom surface of the activated carbon filter plate, and the impeller is located inside the tank body, which can effectively prevent excessive accumulation of soot particles from blocking the activated carbon filter plate and affecting the air outlet volume, resulting in a reduction in treatment efficiency. It also effectively extends the service life of the activated carbon filter plate, reduces the replacement frequency, and lowers the maintenance cost.

[0006] Preferably, the liquid spraying device includes: a bin body, a fixed frame, a motor, a liquid outlet pipe, and a liquid storage pipe. The bin body is fixedly connected to the top of the base, the fixed frame is fixedly connected to the back of the bin body, the motor is fixedly connected to the top of the fixed frame, the liquid outlet pipe is fixedly connected to the top of the bin body, the liquid storage pipe is rotatably connected to the inner wall of the bin body. The liquid spraying device further includes: a reciprocating lead screw, a sliding ring, a mounting frame, a sliding column, and a limiting rod. The reciprocating lead screw is fixedly connected to the output end of the motor, the sliding ring is movably connected to the circumferential surface of the reciprocating lead screw, the mounting frame is fixedly connected to the circumferential surface of the sliding ring, the sliding column is fixedly connected to the surface of the mounting frame, the limiting rod is fixedly connected to the circumferential surface of the sliding ring, the sliding column contacts the surface groove of the liquid storage pipe, the limiting rod is slidably connected to the inner wall chute of the bin body, a liquid outlet is opened at the bottom of the liquid storage pipe, and the liquid outlet pipe is located at the top opening of the liquid storage pipe, which can realize the left and right rotation of the liquid storage pipe to evenly sprinkle the medicine, thereby expanding the sprinkling range of the liquid medicine and enhancing its purification effect.

[0007] Preferably, the stirring mechanism includes: a fixed groove, a gear, a rack, a rotating shaft, and a stirring plate. The fixed groove is fixedly connected to the inner wall of the bin body. The rack is fixedly connected to the inner wall of the fixed groove. The gear is fixedly connected to the circumferential surface of the rotating shaft. The stirring plate is fixedly connected to the circumferential surface of the rotating shaft. The stirring mechanism further includes: a connecting plate, a stopper, and a pushing plate. The connecting plate is fixedly connected to the circumferential surface of the sliding ring. The pushing plate is hinged to the bottom of the connecting plate. The stopper is fixedly connected to the back of the connecting plate. The gear meshes with the rack. The rotating shaft is rotatably connected to the circumferential surface of the sliding ring. The front surface of the stopper contacts the back surface of the pushing plate, stirring the internal tail gas and the reagent, enabling the tail gas and the reagent to fully contact and improve the fusion effect, thereby enhancing the purification effect and avoiding waste of the reagent, thus reducing the treatment cost. The sediment can also be pushed into the waste bin through the pushing plate for collection, facilitating subsequent treatment and preventing the sediment from accumulating and reducing the tank space and treatment efficiency.

[0008] The present invention adopts the above technical solutions and can bring the following beneficial effects: 1. The dust filtration device for thermal power generation waste gas treatment can effectively prevent excessive accumulation of soot particles from blocking the activated carbon filter plate and affecting the gas outlet volume, resulting in reduced treatment efficiency, and can also effectively extend the service life of the activated carbon filter plate, reduce the replacement frequency, and lower the maintenance cost through the mutual cooperation among the dust collector, the tank body, the air inlet, the guide plate, the impeller, the scraper, and the activated carbon filter plate.

[0009] 2. The dust filtration device for thermal power generation waste gas treatment can achieve the left and right rotation of the liquid storage pipe through the mutual cooperation among the liquid spraying device, the bin body, the fixed frame, the motor, the liquid outlet pipe, the liquid storage pipe, the reciprocating lead screw, the sliding ring, the mounting frame, the sliding column, and the limiting rod, so that the reagent is evenly scattered, thereby expanding the scattering range of the liquid medicine and enhancing the purification effect.

[0010] 3. The dust filtration device for thermal power generation waste gas treatment can make the stirring plate rotate through the mutual cooperation among the connecting plate, the stopper, the fixed groove, the gear, the rack, the rotating shaft, the stirring plate, and the pushing plate, stirring the internal tail gas and the reagent, enabling the tail gas and the reagent to fully contact and improve the fusion effect, thereby enhancing the purification effect and avoiding waste of the reagent, thus reducing the treatment cost. The sediment can also be pushed into the waste bin through the pushing plate for collection, facilitating subsequent treatment and preventing the sediment from accumulating and reducing the tank space and treatment efficiency. Description of the Drawings

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a sectional view of the dust collector structure of the present invention; Figure 3 It is an enlarged view of the impeller structure of the present invention; Figure 4Schematic diagram of the liquid spraying device of the present invention; Figure 5 Cross-sectional view of the liquid spraying device of the present invention; Figure 6 Schematic diagram of the reciprocating lead screw structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of the structure at A in Figure 8 Schematic diagram of the liquid storage pipe structure of the present invention.

[0012] In the figure: 1, base; 2, support; 3, dust removal mechanism; 301, tank body; 302, air inlet; 303, material guiding plate; 304, impeller; 305, scraper; 306, activated carbon filter plate; 307, air outlet pipe; 4, air duct; 5, dust collection bin; 6, liquid spraying device; 601, bin body; 602, fixing frame; 603, motor; 604, liquid outlet pipe; 605, liquid storage pipe; 606, reciprocating lead screw; 607, sliding ring; 608, mounting frame; 609, sliding column; 610, limiting rod; 7, stirring mechanism; 701, connecting plate; 702, block; 703, fixing groove; 704, gear; 705, rack; 706, rotating shaft; 707, stirring plate; 708, pushing plate; 8, waste material box; 9, exhaust pipe. Detailed implementation manners

[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0014] Please refer to Figures 1-8, an embodiment of the present invention is: a dust filtering device for treating waste gas from thermal power generation, which includes a base 1. A bracket 2 is arranged on the top of the base 1, and a dust removal mechanism 3 is arranged on the top of the bracket 2. A wind pipe 4 is fixedly communicated with the top of the dust removal mechanism 3, and a dust collection bin 5 is fixedly connected to the bottom of the dust removal mechanism 3. A liquid spraying device 6 is fixedly arranged on the top of the base 1. A stirring mechanism 7 is arranged inside the liquid spraying device 6. The front of the liquid spraying device 6 is communicated with a waste material box 8. An exhaust pipe 9 is fixedly communicated with the top of the waste material box 8. The dust removal mechanism 3 includes: a tank body 301, an air inlet 302, a guide plate 303, an impeller 304, a scraper 305, an activated carbon filter plate 306, and an air outlet pipe 307. The guide plate 303 is fixedly connected to the inner wall of the tank body 301, and the air outlet pipe 307 is fixedly communicated with the top of the tank body 301. The air inlet 302 is fixedly communicated with the circumferential surface of the tank body 301. The activated carbon filter plate 306 is fixedly connected to the inner wall of the air outlet pipe 307. The impeller 304 is rotatably connected to the circumferential surface of the air outlet pipe 307. The scraper 305 is fixedly connected to the circumferential surface of the impeller 304. The scraper 305 is in contact with the bottom surface of the activated carbon filter plate 306. The impeller 304 located inside the tank body 301 can effectively prevent excessive accumulation of soot particles from blocking the activated carbon filter plate 306 and affecting the air outlet volume, resulting in a reduction in treatment efficiency. It also effectively extends the service life of the activated carbon filter plate 306, reduces the replacement frequency, and lowers the maintenance cost.

[0015] Working principle: When the device operates, the tail gas will first enter the dust removal mechanism 3 along the tangential direction through the air inlet 302. Due to the structure limitation of the tank body 301, a strong swirling air flow is formed. The dust particles in the tail gas are thrown towards the cylinder wall under the action of centrifugal force and separated from the gas. The particles lose kinetic energy after hitting the guide plate 303 on the tank body 301 and slide down along the inner wall to the dust collection bin 5 at the bottom of the cone under the action of gravity. The downward swirling tail gas turns into an inner vortex due to the pressure change when it reaches the bottom of the cone of the tank body 301 and rotates upward along the axis. After being secondarily filtered by the activated carbon filter plate 306 in the top air outlet pipe 307, it is discharged. At the same time, the swirling air flow will blow the impeller 304 to make it rotate. The rotation of the moving impeller 304 drives the scraper 305 to rotate. The rotation of the scraper 305 scrapes off the soot particles accumulated on the surface of the activated carbon filter plate 306, keeping the surface of the activated carbon filter plate 306 clean. It can effectively prevent excessive accumulation of soot particles from blocking the activated carbon filter plate 306 and affecting the air outlet volume, resulting in a reduction in treatment efficiency. It also effectively extends the service life of the activated carbon filter plate 306, reduces the replacement frequency, and lowers the maintenance cost.

[0016] Please refer to Figures 1-8, on the basis of the above embodiments, in another embodiment of the present invention, the liquid spraying device 6 includes: a storage body 601, a fixing frame 602, a motor 603, a liquid outlet pipe 604, a liquid storage pipe 605. The storage body 601 is fixedly connected to the top of the base 1, the fixing frame 602 is fixedly connected to the back of the storage body 601, the motor 603 is fixedly connected to the top of the fixing frame 602, the liquid outlet pipe 604 is fixedly connected to the top of the storage body 601, the liquid storage pipe 605 is rotatably connected to the inner wall of the storage body 601. The liquid spraying device 6 further includes: a reciprocating lead screw 606, a sliding ring 607, a mounting frame 608, a sliding column 609, a limiting rod 610. The reciprocating lead screw 606 is fixedly connected to the output end of the motor 603, the sliding ring 607 is movably connected to the circumferential surface of the reciprocating lead screw 606, the mounting frame 608 is fixedly connected to the circumferential surface of the sliding ring 607, the sliding column 609 is fixedly connected to the surface of the mounting frame 608, the limiting rod 610 is fixedly connected to the circumferential surface of the sliding ring 607. The sliding column 609 is in contact with the surface groove of the liquid storage pipe 605, and the limiting rod 610 is slidably connected to the inside of the chute on the inner wall of the storage body 601. The bottom of the liquid storage pipe 605 is provided with a liquid outlet, and the liquid outlet pipe 604 is located at the top opening of the liquid storage pipe 605, which can realize the left and right rotation of the liquid storage pipe 605 so that the medicament is evenly scattered, thereby expanding the scattering range of the liquid medicine and enhancing its purification effect.

[0017] The stirring mechanism 7 includes: a fixing groove 703, a gear 704, a rack 705, a rotating shaft 706, a stirring plate 707. The fixing groove 703 is fixedly connected to the inner wall of the storage body 601, the rack 705 is fixedly connected to the inner wall of the fixing groove 703, the gear 704 is fixedly connected to the circumferential surface of the rotating shaft 706, the stirring plate 707 is fixedly connected to the circumferential surface of the rotating shaft 706. The stirring mechanism 7 further includes: a connecting plate 701, a stopper 702, a pushing plate 708. The connecting plate 701 is fixedly connected to the circumferential surface of the sliding ring 607, the pushing plate 708 is hinged to the bottom of the connecting plate 701, the stopper 702 is fixedly connected to the back of the connecting plate 701. The gear 704 meshes with the rack 705, the rotating shaft 706 is rotatably connected to the circumferential surface of the sliding ring 607, and the front surface of the stopper 702 is in contact with the back surface of the pushing plate 708. It stirs the internal tail gas and the medicament, makes the tail gas and the medicament fully contact to improve the fusion effect, thereby improving its purification effect and also avoiding the waste of the medicament, reducing the treatment cost. The precipitate can also be pushed into the waste material box 8 through the pushing plate 708 for collection, which is convenient for subsequent treatment and prevents the precipitate from accumulating to reduce the space of the tank body 301 and lower the treatment efficiency.

[0018] Working principle: After the tail gas is preliminarily removed of soot particles, it is discharged into the liquid spraying device 6 through the air duct 4. At this time, the medicament flowing out of the liquid outlet pipe 604 is changed according to the types of harmful substances in the tail gas, and flows into the liquid storage pipe 605. It flows from the bottom opening of the liquid storage pipe 605 to the inside of the bin body 601. At the same time, the motor 603 is started to drive the reciprocating lead screw 606 to rotate. The rotation of the reciprocating lead screw 606 drives the sliding ring 607 to rotate. Since the sliding ring 607 is restricted by the limiting rod 610, the sliding ring 607 can only reciprocate on the reciprocating lead screw 606. The movement of the sliding ring 607 drives the mounting frame 608 to move, and the mounting frame 608 drives the sliding column 609 to move. The sliding column 609 slides in the groove of the liquid storage pipe 605, pushing the liquid storage pipe 605 to rotate left and right along the shape of the groove. The left and right rotation of the liquid storage pipe 605 makes the medicament sprinkle evenly, thus expanding the sprinkling range of the liquid medicine and enhancing its purification effect; The reciprocating movement of the sliding ring 607 will also drive the rotating shaft 706 to move. The movement of the rotating shaft 706 drives the gear 704 to move. Since the gear 704 meshes with the rack 705, the movement of the gear 704 will cause itself to rotate. The rotation of the gear 704 drives the rotating shaft 706 to rotate, and the rotation of the rotating shaft 706 drives the stirring plate 707 to rotate. As the rotating shaft 706 moves, the stirring plate 707 will also rotate, stirring the internal tail gas and the medicament, making the tail gas and the medicament fully contact to improve the fusion effect, thereby improving its purification effect and avoiding the waste of the medicament, thus reducing the treatment cost. In addition, the material of the stirring plate 707 is selected to be corrosion-resistant and wear-resistant, ensuring its stability and durability during long-term operation. The precipitates generated by the reaction accumulate at the bottom of the bin body 601. At the same time, the movement of the sliding ring 607 drives the connecting plate 701 to move, and the movement of the connecting plate 701 drives the pushing plate 708 hinged to it to move. Due to the resistance of the precipitates, the pushing plate 708 will rotate in the opposite direction, but blocked by the stop block 702, the pushing plate 708 cannot rotate, and the precipitates are pushed into the waste material box 8 for collection, which is convenient for subsequent treatment and prevents the accumulation of precipitates from reducing the space of the tank body 301 and lowering the treatment efficiency. During the round-trip process, without the block of the stop block 702, the pushing plate 708 rotates upward under the influence of the resistance and does not contact the tank body 301 to prevent the precipitates from being pushed into the air duct 4, resulting in pipeline blockage and reducing the maintenance cost.

[0019] The present invention provides a dust filtering device for flue gas treatment in thermal power generation. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be implemented by using the existing technology.

Claims

1. A dust filtration device for thermal power generation waste gas treatment, comprising a base, characterized in that: A bracket is provided at the top of the base, a dust removal mechanism is provided at the top of the bracket, an air duct is fixedly communicated at the top of the dust removal mechanism, a dust collection bin is fixedly connected to the bottom of the dust removal mechanism, a liquid spraying device is fixedly arranged at the top of the base, a stirring mechanism is arranged inside the liquid spraying device, a waste material box is communicated at the front of the liquid spraying device, an exhaust pipe is fixedly communicated at the top of the waste material box, and the dust removal mechanism includes: a tank body, an air inlet, a guide plate, an impeller, a scraper, an activated carbon filter plate, and an air outlet pipe. The guide plate is fixedly connected to the inner wall of the tank body, the air outlet pipe is fixedly communicated at the top of the tank body, the air inlet is fixedly communicated with the circumferential surface of the tank body, the activated carbon filter plate is fixedly connected to the inner wall of the air outlet pipe, the impeller is rotatably connected to the circumferential surface of the air outlet pipe, and the scraper is fixedly connected to the circumferential surface of the impeller.

2. The dust filtering device for thermal power generation waste gas treatment according to claim 1, characterized in that: The scraper is in contact with the bottom surface of the activated carbon filter plate, and the impeller is located inside the tank body.

3. A dust filtering device for thermal power generation waste gas treatment according to claim 2, characterized in that: The liquid spraying device includes: a bin body, a fixing frame, a motor, a liquid outlet pipe, and a liquid storage pipe. The bin body is fixedly connected to the top of the base, the fixing frame is fixedly connected to the back of the bin body, the motor is fixedly connected to the top of the fixing frame, the liquid outlet pipe is fixedly connected to the top of the bin body, and the liquid storage pipe is rotatably connected to the inner wall of the bin body.

4. A dust filtering device for thermal power generation waste gas treatment according to claim 3, characterized in that: The liquid spraying device further includes: a reciprocating lead screw, a sliding ring, a mounting frame, a sliding column, and a limiting rod. The reciprocating lead screw is fixedly connected to the output end of the motor, the sliding ring is movably connected to the circumferential surface of the reciprocating lead screw, the mounting frame is fixedly connected to the circumferential surface of the sliding ring, the sliding column is fixedly connected to the surface of the mounting frame, and the limiting rod is fixedly connected to the circumferential surface of the sliding ring.

5. A dust filtering device for thermal power generation waste gas treatment according to claim 4, characterized in that: The sliding column is in contact with the surface groove of the liquid storage pipe, the limiting rod is slidably connected inside the chute on the inner wall of the bin body, a liquid outlet is opened at the bottom of the liquid storage pipe, and the liquid outlet pipe is located at the top opening of the liquid storage pipe.

6. The dust filtration device for thermal power generation waste gas treatment according to claim 5, characterized in that: The stirring mechanism includes: a fixing groove, a gear, a rack, a rotating shaft, and a stirring plate. The fixing groove is fixedly connected to the inner wall of the bin body, the rack is fixedly connected to the inner wall of the fixing groove, the gear is fixedly connected to the circumferential surface of the rotating shaft, and the stirring plate is fixedly connected to the circumferential surface of the rotating shaft.

7. A dust filtration device for thermal power generation waste gas treatment according to claim 6, characterized in that: The stirring mechanism further includes: a connecting plate, a stop block, and a pushing plate. The connecting plate is fixedly connected to the circumferential surface of the sliding ring, the pushing plate is hinged to the bottom of the connecting plate, and the stop block is fixedly connected to the back of the connecting plate.

8. A dust filtration device for thermal power generation waste gas treatment according to claim 7, characterized in that: The gear meshes with the rack, the rotating shaft is rotatably connected to the circumferential surface of the sliding ring, and the front surface of the stop block is in contact with the back surface of the pushing plate.

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