An electrostatic precipitator with flue gas waste heat recovery

Abstract

The present invention belongs to the technical field of electrostatic precipitators, and specifically, is an electrostatic precipitator with flue gas waste heat recovery, comprising an electrostatic precipitator body, and a heat recovery box, which is arranged inside the electrostatic precipitator body and contains clean water, and a ventilation box is fixedly connected to the bottom end of the heat recovery box, and a flue gas pipe connected to a boiler is arranged at the bottom end of the ventilation box; a converter is arranged inside the ventilation box, and the heat absorption end faces the flue gas pipe, and is used to absorb heat energy in the flue gas and convert it into electrical energy; an air supply pipe, one end of which extends into the heat recovery box, and the other end extends into the ventilation box, and is used to transport the flue gas to the clean water in the heat recovery box for filtration; an exhaust pipe, which is arranged at the top of the heat recovery box, and is used to transport the flue gas into the electrostatic precipitator body; a cleaning component, which is used to clean the heat absorption end of the converter. Through the above-mentioned structural arrangement, the waste heat in the flue gas can be utilized, and the dust removal effect of the electrostatic precipitator can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electrostatic precipitators, in particular to an electrostatic precipitator with flue gas waste heat recovery. Background Art

[0002] The working principle of the electrostatic precipitator is to use the strong electric field strength generated by high voltage to ionize the gas, generate corona discharge, and then charge the dust, and under the action of the electric field force, separate the suspended particles in the gas. Specifically, when the dust-containing flue gas passes through the electric field space, the negative ions collide with the dust and attach to it, charging the dust. The charged dust is driven to the dust collecting electrode by the Coulomb force in the electric field. After reaching the dust collecting electrode, it releases negative charges and deposits on it (gas and dust separation). When the dust deposited on the electrode reaches a certain thickness, it is vibrated by the vibrating mechanism, so that the dust separates from the electrode plate and falls into the lower ash hopper.

[0003] The Chinese patent with application number CN202311489683.7 discloses an electrostatic precipitator with waste heat recovery function, including a waste heat recovery mechanism, including an electrostatic precipitator body, a horizontal flue connected to the electrostatic precipitator body, an adjustment component arranged in the horizontal flue, a mounting plate connected to the adjustment component, and a heat exchanger arranged on the mounting plate; a dust removal mechanism, including a dust removal component arranged on the mounting plate, and a power component connected to the dust removal component; wherein the power component is connected to the adjustment component, and the power component can drive the dust removal component to move, absorb the heat in the flue gas through the heat exchanger, reduce the temperature of the flue gas, effectively avoid the influence of the high temperature environment on the service life of the material, and at the same time avoid the melting or softening of the particles in the flue gas due to the high temperature, and the recovered heat can be reused for a second time, saving energy. However, during the use of this patent, the heat in the flue gas is lost in vain and cannot be converted into effective energy for utilization, thus leading to the problem of waste of resources.

[0004] The electrostatic precipitator is mainly connected between the boiler tail flue and the induced draft fan. This design enables the electrostatic precipitator to effectively capture the smoke generated by the boiler combustion and then purify the flue gas. The flue gas that is about to enter the electrostatic precipitator has a certain high temperature. Although the flue gas can be purified by the electrostatic precipitator, it will cause the heat in the flue gas to be lost in vain and cannot be converted into effective energy for utilization, thus resulting in a waste of resources.

[0005] Therefore, an electrostatic precipitator with flue gas waste heat recovery is invented to solve the above problems. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: an electrostatic precipitator with flue gas waste heat recovery, including an electrostatic precipitator body, and also including:

[0008] A heat recovery box, which is arranged inside the electrostatic precipitator body and contains clean water, a ventilation box is fixedly connected to the bottom end of the heat recovery box, and a flue gas pipe connected to the boiler is arranged at the bottom end of the ventilation box;

[0009] A pneumatic assembly, which is disposed on one side of the ventilation box and is used to use water vapor to provide power for the cleaning assembly;

[0010] A converter, the converter is arranged inside the ventilation box, with a heat absorbing end facing the smoke pipe, and is used to absorb heat energy in the smoke and convert it into electrical energy;

[0011] A cleaning assembly is arranged on the ventilation box, and the cleaning assembly comprises a sliding rod and a cleaning block. The sliding rod is slidably connected to the inside of the ventilation box and is used to clean the heat absorption end of the converter.

[0012] Preferably, the top end of the heat recovery box is connected to an exhaust pipe, the interior of the heat recovery box is connected to one end of an air supply pipe, the other end of the air supply pipe extends to the interior of the ventilation box, and a partition plate is fixedly connected to the interior of the heat recovery box, and the interior of the heat recovery box is divided into a first chamber and a second chamber by the partition plate, the first chamber is connected to the bottom of the second chamber, one end of the air supply pipe is located in the first chamber, and the exhaust pipe is located above the first chamber.

[0013] Preferably, the cleaning block is fixedly connected to one end of the slide rod facing the converter, one end of the cleaning block is in contact with the heat absorbing end of the converter, and a push block is fixedly connected to the outer wall of the slide rod.

[0014] Preferably, the pneumatic assembly includes a piston cylinder fixedly connected to one side of the ventilation box, the top end of the piston cylinder is fixedly connected to a sub-control box, the interior of the sub-control box is connected to one end of a steam pipe, the other end of the steam pipe extends to the interior of the second chamber, the interior of the sub-control box is slidably connected to an air control block, one end of the air control block close to the ventilation box is fixedly connected to one end of a control rod, and the other end of the control rod extends out of the outer wall of the sub-control box.

[0015] Preferably, the side wall of the ventilation box is fixedly connected with a connecting plate, one side of the connecting plate is rotatably connected with a first rocker arm and a second rocker arm, both of which are connected to the control rod, an air outlet is provided on the side wall of the sub-control box, a first air hole is provided at the bottom end of the sub-control box, a second air hole is provided at the top end of the piston cylinder, the first air hole and the second air hole correspond to each other, a third air hole is provided at the bottom end of the sub-control box, a fourth air hole is provided at the top end of the piston cylinder, the third air hole and the fourth air hole correspond to each other, and a piston is slidably connected to the inside of the piston cylinder.

[0016] Preferably, a cavity is provided inside the sliding rod, a connecting tube is fixedly connected to the air outlet, the other end of the connecting tube extends to the inside of the sliding rod, a cavity is provided inside the cleaning block, the cleaning block is connected to the inner cavity of the sliding rod, and a blowing port is provided at one end of the cleaning block close to the converter.

[0017] Preferably, an arc block with a cavity is provided inside the exhaust pipe, both ends of the arc block extend out of the outer wall of the exhaust pipe, both ends of the arc block are provided with cooling blocks, the arc block is connected to the cooling blocks, the bottom end of the arc block is provided with a first solenoid valve, and the top end of the arc block is provided with a second solenoid valve.

[0018] Preferably, a semiconductor refrigeration plate is provided at one end of the cooling block near the exhaust pipe, the cold end of the semiconductor refrigeration plate faces the inside of the cooling block, the end of the cooling block near the exhaust pipe is made of hard material, and the other end of the cooling block is made of elastic material. A connecting frame is fixedly connected to the outer wall of the exhaust pipe, and an arc-shaped pressure plate is elastically connected to the connecting frame, and the arc-shaped pressure plate fits with the elastic end on the cooling block.

[0019] Preferably, a blocking head is elastically connected to one end of the cooling block facing the exhaust pipe, and a push rod for pressing the blocking head is fixedly connected to the outer wall of the exhaust pipe.

[0020] Preferably, the outer wall of the exhaust pipe is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a winding roller, the bottom outer wall of the arc pressure plate is fixedly connected to a pull rod, a pull rope is fixedly connected to the pull rod, and the other end of the pull rope is fixedly connected to the winding roller.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The electrostatic precipitator with flue gas waste heat recovery described in the present invention receives the heat of the flue gas and converts it into electrical energy for storage through the provided converter, which can effectively utilize the waste heat, and then transports the flue gas to the inside of the heat recovery box through the air supply pipe, which can not only filter the dust particles in the flue gas, but also use the heat energy in the flue gas to heat the clean water inside the heat recovery box and produce water vapor, and the generated water vapor drives the sliding rod and the cleaning block to clean the heat absorption end of the converter, and further utilizes the waste heat of the flue gas to improve the efficiency of the energy conversion of the converter, avoiding the waste of resources, thereby effectively utilizing the heat energy in the flue gas and improving the use of the heat energy in the flue gas.

[0023] 2. The electrostatic precipitator with flue gas waste heat recovery described in the present invention receives the mixture of flue gas and water vapor through the arranged arc block, and cools the mixture of flue gas and water vapor through the semiconductor refrigeration plate arranged inside the cooling block. At this time, the water vapor will condense and liquefy and remain inside the cooling block. At this time, the second solenoid valve is opened to allow the flue gas to re-enter the exhaust pipe, which can effectively reduce the entry of water vapor into the electrostatic precipitator body, and further reduce the influence of water vapor on the dust removal effect of the electrostatic precipitator body, thereby improving the working effect of the electrostatic precipitator and extending the service life of the electrostatic precipitator. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a cross-sectional view of the heat recovery box structure of the present invention;

[0027] Figure 3 The present invention Figure 2 A in the enlarged view;

[0028] Figure 4 It is a cross-sectional view of the piston cylinder structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the cleaning block of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the piston cylinder of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the arc-shaped pressing plate of the present invention.

[0032] In the figure: 1. electrostatic precipitator body; 2. heat recovery box; 3. exhaust pipe; 4. ventilation box; 5. flue gas pipe; 6. air supply pipe; 7. partition plate; 8. pneumatic assembly; 81. steam pipe; 9. converter; 10. first chamber; 11. second chamber; 12. cleaning block; 13. blowing port; 14. cleaning assembly; 141. sliding rod; 15. push block; 16. connecting pipe; 17. sub-control box; 18. piston cylinder; 19. control rod; 20. connecting plate; 21. first Rocker arm; 22, second rocker arm; 23, air control block; 24, air outlet; 25, first air hole; 26, second air hole; 27, third air hole; 28, fourth air hole; 29, piston; 30, winding roller; 31, pull rope; 32, pull rod; 33, connecting frame; 34, arc block; 35, cooling block; 36, semiconductor refrigeration plate; 37, arc pressure plate; 38, first solenoid valve; 39, second solenoid valve; 40, blocking head; 41, push rod; 42, driving motor. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Example 1

[0035] In the existing electrostatic precipitator device, during use, the heat in the flue gas is lost in vain and cannot be converted into effective energy for utilization, thus resulting in a waste of resources.

[0036] like Figure 1 - Figure 3As shown, an electrostatic precipitator with flue gas waste heat recovery includes an electrostatic precipitator body 1; it also includes: a heat recovery box 2, which is arranged inside the electrostatic precipitator body 1 and contains clean water. A ventilation box 4 is fixedly connected to the bottom end of the heat recovery box 2. A flue gas pipe 5 connected to the boiler is arranged at the bottom end of the ventilation box 4. When the boiler burns, a large amount of high-temperature flue gas will be generated. At this time, the high-temperature flue gas will also carry a large amount of dust particles. The high-temperature flue gas will enter the interior of the ventilation box 4 through the flue gas pipe 5; a pneumatic component 8, which is arranged on one side of the ventilation box 4 and is used to use water vapor to provide power for the cleaning component 14. When the flue gas is transported to the clean water, the high temperature of the flue gas will gradually increase the temperature of the clean water until water vapor appears. The pneumatic component 8 can be driven by the water vapor to drive the cleaning component 14 to clean the heat absorption end of the converter 9 to ensure the efficiency of the converter 9 in converting thermal energy into electrical energy; a converter 9, which is arranged inside the ventilation box 4 and is a thermoelectric converter The converter 9 is provided with a heat absorbing end facing the flue gas pipe 5, and is used to absorb the heat energy in the flue gas and convert it into electrical energy. The converter 9 is located directly above the flue gas pipe 5. When the flue gas enters the interior of the ventilation box 4 through the flue gas pipe 5, the high-temperature flue gas will be directly blown onto the heat absorbing end of the converter 9. The heat energy is converted into electrical energy for storage by the converter 9, which can effectively utilize the heat energy in the flue gas and avoid waste of resources. The cleaning component 14 is arranged on the ventilation box 4. The cleaning component 14 includes a slide bar 141 and a cleaning block 12. The slide bar 141 is slidably connected to the interior of the ventilation box 4 and is used to clean the heat absorbing end of the converter 9. When the flue gas continuously impacts the heat absorbing end of the converter 9, the dust and particles in the flue gas may adhere to the heat absorbing end of the converter 9, which will reduce the heat obtained by the heat absorbing end, and the working efficiency of the converter 9 will be reduced, which will lead to a reduction in the generated electrical energy. At this time, the heat absorbing end of the converter 9 is cleaned by the cleaning component 14, so as to maintain the efficiency of converting heat energy into electrical energy.

[0037] like Figure 2 , Figure 3As shown, the top end of the heat recovery box 2 is connected to an exhaust pipe 3 for conveying flue gas into the electrostatic precipitator body 1. The exhaust pipe 3 is connected to the interior of the heat recovery box 2, and the other end is connected to the electrostatic precipitator body 1. The filtered flue gas is discharged from the clean water and can finally enter the interior of the electrostatic precipitator body 1 through the exhaust pipe 3 to carry out dust removal. The dust particles in the flue gas are pre-treated by clean water, and then the final dust treatment is carried out through the electrostatic precipitator body 1, which can further improve the dust removal effect. The interior of the heat recovery box 2 is connected to one end of an air supply pipe 6, and the other end of the air supply pipe 6 extends to the interior of the ventilation box 4. The air supply pipe 6 is used to convey the flue gas to the clean water in the heat recovery box 2 to filter heat. One end of the air supply pipe 6 is connected to the inner cavity of the ventilation box 4, and the other end extends to the interior of the heat recovery box 2. The air supply pipe 6 extends from the top of the heat recovery box 2 to the clean water in the heat recovery box 2. Below the liquid level, the backflow of clean water in the heat recovery box 2 can be effectively avoided. Under the action of air pressure, the high-temperature flue gas can enter the clean water through the air supply pipe 6. The clean water can not only filter the dust particles in the flue gas, but also cool the temperature of the high-temperature flue gas. At this time, the filtered flue gas can float in the clean water. The interior of the heat recovery box 2 is fixedly connected with a partition plate 7. The interior of the heat recovery box 2 is divided into a first chamber 10 and a second chamber 11 by the partition plate 7. The first chamber 10 is connected to the bottom of the second chamber 11. The top of the partition plate 7 is in contact with the top of the interior of the heat recovery box 2, and the bottom of the partition plate 7 is not in contact with the bottom of the interior of the heat recovery box 2. Therefore, the separated first chamber 10 and the second chamber 11 can be connected through the partition at the bottom of the partition plate 7. One end of the air supply pipe 6 is located in the first chamber 10, and the exhaust pipe 3 is located above the first chamber 10.

[0038] The clean water in the upper part can be separated by the partition plate 7. When the air supply pipe 6 transports the flue gas to the clean water in the first chamber 10, the flue gas forms bubbles underwater and moves upward. The flue gas will be stored in the first chamber 10. By setting the partition plate 7, the flue gas in the first chamber 10 will not enter the second chamber 11. At this time, the first chamber 10 can only pass through the exhaust pipe 3 located in the first chamber 10 and finally enter the interior of the electrostatic precipitator body 1. Since the first chamber 10 and the second chamber 11 are connected at the bottom of the clean water, the high temperature of the flue gas will gradually increase the temperature of the clean water. Water vapor can appear in both the first chamber 10 and the second chamber 11. Since the flue gas in the first chamber 10 is blocked by the partition plate 7, there is no flue gas in the water vapor in the second chamber 11.

[0039] like Figure 5As shown, the cleaning block 12 is fixedly connected to one end of the slide bar 141 facing the converter 9, and one end of the cleaning block 12 is in contact with the heat absorbing end of the converter 9. By controlling the slide bar 141 to slide in the direction of the converter 9, the cleaning block 12 can be driven to scrape the heat absorbing end of the converter 9, and the dust adhering to the heat absorbing end can be scraped off, thereby further improving the energy conversion efficiency of the converter 9. The outer wall of the slide bar 141 is fixedly connected with a push block 15.

[0040] like Figure 2 - Figure 5 As shown, the pneumatic assembly 8 includes a piston cylinder 18 fixedly connected to one side of the ventilation box 4, the top of the piston cylinder 18 is fixedly connected to the sub-control box 17, the interior of the sub-control box 17 is connected to one end of the steam pipe 81, one end of the steam pipe 81 is located above the interior of the second chamber 11, and the other end of the steam pipe 81 extends to the interior of the second chamber 11, and the interior of the sub-control box 17 is slidably connected to an air control block 23, the air control block 23 is C-shaped, and the opening faces the piston cylinder 18. Regardless of whether the air control block 23 slides to the left or the right, the air outlet 24 is always located inside the air control block 23, one end of the air control block 23 close to the ventilation box 4 is fixedly connected to one end of the control rod 19, and the other end of the control rod 19 extends out of the outer wall of the sub-control box 17, and the side wall of the ventilation box 4 is fixedly connected to a connecting plate 20, and one side of the connecting plate 20 is rotatably connected to the first swing arm 21 and the second The swing rod 22 and the push block 15 are located in the middle of the first swing rod 21 and the second swing rod 22. Both the first swing rod 21 and the second swing rod 22 are connected to the control rod 19. The first swing rod 21 is close to the sub-control box 17, and the second swing rod 22 is close to the ventilation box 4. The central axes of the first swing rod 21 and the second swing rod 22 are rotatably connected to the connecting plate 20. The top ends of the first swing rod 21 and the second swing rod 22 are rotatably connected to the control rod 19. An air outlet 24 is provided on the side wall of the sub-control box 17, a first air hole 25 is provided at the bottom end of the sub-control box 17, a second air hole 26 is provided at the top end of the piston cylinder 18, and the first air hole 25 and the second air hole 26 correspond to each other. A third air hole 27 is provided at the bottom end of the sub-control box 17, and a fourth air hole 28 is provided at the top end of the piston cylinder 18. The third air hole 27 and the fourth air hole 28 correspond to each other, and a piston 29 is slidably connected to the inside of the piston cylinder 18.

[0041] A cavity is defined inside the slide bar 141, a connecting tube 16 is fixedly connected to the air outlet 24, the other end of the connecting tube 16 extends to the interior of the slide bar 141, a cavity is defined inside the cleaning block 12, the cleaning block 12 is connected to the inner cavity of the slide bar 141, a blowing port 13 is defined at one end of the cleaning block 12 close to the converter 9, water vapor discharged from the air outlet 24 can be transported to the interior of the slide bar 141 through the connecting tube 16, and enter the interior of the cleaning block 12, and the water vapor is ejected from the blowing port 13, thereby improving the cleaning effect of the cleaning block 12 on the heat absorption end of the converter 9, and the ejection of water vapor can also effectively prevent dust from blocking the blowing port 13.

[0042] When the slide bar 141 drives the push block 15 to slide toward the position of the ventilation box 4, the push block 15 will push the bottom end of the second rocker arm 22. At this time, the top end of the second rocker arm 22 and the part that is rotatably connected to the control rod 19 will tilt toward the direction of the sub-control box 17, and at the same time, it will drive the control rod 19 to slide toward the direction of the sub-control box 17. At this time, the air control block 23 will also slide toward the first air hole 25 inside the sub-control box 17. When the slide bar 141 drives the push block 15 to slide toward the direction of the piston cylinder 18, the push block 15 will push the bottom end of the first rocker arm 21. At this time, the top end of the first rocker arm 21 will tilt toward the direction of the ventilation box 4, and will drive the control rod 19 to slide toward the direction of the ventilation box 4, so that the air control block 23 slides toward the third air hole 27.

[0043] The air control block 23 is C-shaped, with its opening facing the piston cylinder 18. No matter whether the air control block 23 slides to the left or the right, the air outlet 24 is always located inside the air control block 23. When the air control block 23 slides to the end in the direction of the ventilation box 4, the air control block 23 will be located above the third air hole 27, and the third air hole 27 will be connected to the air outlet 24. When the air control block 23 slides to the other end, the air control block 23 will be connected to the first air hole 25, and the first air hole 25 will also be connected to the air outlet 24. When the air control block 23 is located above the first air hole 25, the air outlet 24 is connected to the inner cavity of the piston cylinder 18 through the first air hole 25 and the second air hole 26. When the air control block 23 is located above the third air hole 27, the air outlet 24 is connected to the inner cavity of the piston cylinder 18 through the third air hole 27 and the fourth air hole 28. The sliding range of the piston 29 is between the second air hole 26 and the fourth air hole 28.

[0044] When water vapor is produced in the second chamber 11, the water vapor will enter the interior of the steam pipe 81 under the action of pressure, and then be transported to the interior of the sub-control box 17. When the air control block 23 is located above the first air hole 25, the water vapor inside the sub-control box 17 can enter the second air hole 26 through the first air hole 25, and then enter the inner cavity of the piston cylinder 18. At this time, the water vapor is located in the direction of the piston 29 toward the second air hole 26. As the water vapor increases, the piston 29 will be continuously pushed to slide in the direction of the fourth air hole 28. At the same time, the piston 29 pushes the slide rod 141 to move, and the slide rod 141 drives the push block 15 to push the second swing rod 22, so that the control rod 19 drives the air control block 23 toward the first air hole 25. When the air control block 23 slides to the top of the first air hole 25, the water vapor in the direction of the piston 29 close to the first air hole 25 can enter the air control block 23 through the second air hole 26 and the first air hole 25, and finally be discharged through the air outlet 24. By reciprocating motion, the sliding rod 141 can drive the cleaning block 12 to slide back and forth to clean the heat absorption end of the converter 9, and the clean water is heated by the waste heat of the flue gas to produce water vapor, and then the heat absorption end of the converter 9 is cleaned by the power of the water vapor, which can further improve the efficiency of energy conversion of the converter 9.

[0045] By setting up a converter 9, the heat of the flue gas is received and converted into electrical energy for storage, so that the waste heat can be effectively utilized. The flue gas is then transported to the inside of the heat recovery box 2 through the air supply pipe 6, which can not only filter the dust particles in the flue gas, but also use the heat energy in the flue gas to heat the clean water inside the heat recovery box 2 and produce water vapor. The generated water vapor drives the sliding rod 141 and the cleaning block 12 to clean the heat absorption end of the converter 9, and further utilizes the waste heat of the flue gas to improve the efficiency of the energy conversion of the converter 9, avoiding the waste of resources, thereby effectively utilizing the heat energy in the flue gas and improving the use of the heat energy in the flue gas.

[0046] Example 2

[0047] On the basis of the above-mentioned embodiment, water vapor can easily enter the electrostatic precipitator body, and the water vapor affects the dust removal effect of the electrostatic precipitator body.

[0048] like Figure 6 , Figure 7As shown, the exhaust pipe 3 is provided with an arc block 34 with a cavity, both ends of the arc block 34 extend out of the outer wall of the exhaust pipe 3, and both ends of the arc block 34 are provided with cooling blocks 35, and the arc block 34 is connected with the cooling block 35. The bottom end of the arc block 34 is provided with a first solenoid valve 38, and the first solenoid valve 38 is made of high-temperature solenoid valve material. The top end of the arc block 34 is provided with a second solenoid valve 39, and the second solenoid valve 39 is made of high-temperature solenoid valve material. When the first solenoid valve 38 is opened, the second solenoid valve 39 will be closed, and when the second solenoid valve 39 is opened, the first solenoid valve 38 will also be closed. The specific control procedure will not be described in detail here. A semiconductor refrigeration plate 36 is provided at one end of the cooling block 35 near the exhaust pipe 3, and the cold end of the semiconductor refrigeration plate 36 faces the cooling block 35. Internally, one end of the cooling block 35 close to the exhaust pipe 3 is made of a hard material, and the other end of the cooling block 35 is made of an elastic material. The outer wall of the exhaust pipe 3 is fixedly connected to a connecting frame 33, and an arc-shaped pressure plate 37 is elastically connected to the connecting frame 33. The arc-shaped pressure plate 37 fits with the elastic end of the cooling block 35. The connecting frame 33 and the arc-shaped pressure plate 37 are connected by a torsion spring. When the torsion spring is not deformed, one end of the arc-shaped pressure plate 37 will fit with the outer wall of the cooling block 35. When the arc-shaped pressure plate 37 rotates toward the direction of the exhaust pipe 3, the torsion spring will deform to store elastic potential energy. At the same time, the arc-shaped pressure plate 37 will also squeeze the elastic end of the cooling block 35, causing the cooling block 35 to deform and squeeze the inner cavity of the cooling block 35. When the second solenoid valve 39 is opened, the efficiency of the flue gas entering the exhaust pipe 3 can be accelerated.

[0049] like Figure 7 As shown, the cooling block 35 is elastically connected to a blocking head 40 at one end toward the exhaust pipe 3, and a push rod 41 for pressing the blocking head 40 is fixedly connected to the outer wall of the exhaust pipe 3. The cooling block 35 is softly connected to the arc block 34. When the cooling block 35 is squeezed and deformed by the arc pressure plate 37, the cooling block 35 will also approach the position of the exhaust pipe 3. At this time, the blocking head 40 will be pressed by the push rod 41 to make the blocking head 40 slide toward the arc pressure plate 37, and the hole blocked by the blocking head 40 will also be opened, and the condensed water inside the cooling block 35 will also be discharged. The outer wall of the exhaust pipe 3 is fixedly connected to a driving motor 42, and the output end of the driving motor 42 is fixedly connected to the winding roller 30. The bottom outer wall of the arc pressure plate 37 is fixedly connected to a pull rod 32, and a pull rope 31 is fixedly connected to the pull rod 32, and the other end of the pull rope 31 is fixedly connected to the winding roller 30.

[0050] When the flue gas and water vapor enter the exhaust pipe 3, the inner cavity of the exhaust pipe 3 can be blocked by the arc block 34, and the first solenoid valve 38 is opened, so that the mixture of flue gas and water vapor will enter the inner cavity of the arc block 34 and the cooling block 35. At this time, the first solenoid valve 38 is closed and the second solenoid valve 39 is opened, so that the gas in the inner cavity of the arc block 34 and the cooling block 35 can be re-delivered to the inside of the exhaust pipe 3;

[0051] When the flue gas and water vapor enter the cooling block 35 at the same time, the water vapor is cooled by setting the semiconductor cooling plate 36, and the water vapor can be liquefied by condensation and retained in the cooling block 35. At this time, the second solenoid valve 39 is opened, and the flue gas can re-enter the exhaust pipe 3, and finally the dust is removed by the electrostatic precipitator body 1, which can effectively reduce the water vapor from entering the electrostatic precipitator body 1, and further reduce the water vapor from affecting the dust removal effect of the electrostatic precipitator body 1;

[0052] By starting the driving motor 42, the winding roller 30 can be driven to wind up the pull rope 31. At this time, the shortening of the pull rope 31 can drive the pull rod 32 to move closer, and at the same time drive the arc pressure plate 37 to squeeze the cooling block 35. The above-mentioned structures are arranged on both sides of the arc block 34. By driving the driving motor 42 to drive the winding roller 30 to wind up the pull ropes 31 on both sides at the same time, the cooling blocks 35 on both sides can be squeezed. By flipping the driving motor 42, the cooling block 35 can be reset under the action of the torsion spring.

[0053] The mixture of flue gas and water vapor is received by the arc block 34, and the mixture of flue gas and water vapor is cooled by the semiconductor refrigeration plate 36 arranged inside the cooling block 35. At this time, the water vapor will condense and liquefy and remain inside the cooling block 35. At this time, the second solenoid valve 39 is opened so that the flue gas can re-enter the exhaust pipe 3, which can effectively reduce the entry of water vapor into the electrostatic precipitator body 1, and further reduce the influence of water vapor on the dust removal effect of the electrostatic precipitator body 1, thereby improving the working effect of the electrostatic precipitator and extending the service life of the electrostatic precipitator.

[0054] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electrostatic precipitator with flue gas waste heat recovery, comprising an electrostatic precipitator body, characterized in that: Also includes: A heat recovery box, which is arranged inside the electrostatic precipitator body and contains clean water, a ventilation box is fixedly connected to the bottom end of the heat recovery box, and a flue gas pipe connected to the boiler is arranged at the bottom end of the ventilation box; A pneumatic assembly, which is disposed on one side of the ventilation box and is used to use water vapor to provide power for the cleaning assembly; A converter, the converter is arranged inside the ventilation box, with a heat absorbing end facing the smoke pipe, and is used to absorb heat energy in the smoke and convert it into electrical energy; A cleaning assembly, the cleaning assembly is arranged on the ventilation box, the cleaning assembly comprises a sliding rod and a cleaning block, the sliding rod is slidably connected inside the ventilation box, and is used to clean the heat absorption end of the converter; The top of the heat recovery box is connected to an exhaust pipe, an arc block with a cavity is arranged inside the exhaust pipe, both ends of the arc block extend out of the outer wall of the exhaust pipe, both ends of the arc block are provided with cooling blocks, the arc block is connected to the cooling block, a first solenoid valve is arranged at the bottom end of the arc block, and a second solenoid valve is arranged at the top end of the arc block; A semiconductor refrigeration sheet is arranged at one end of the cooling block near the exhaust pipe, and the cold end of the semiconductor refrigeration sheet faces the inside of the cooling block. The end of the cooling block near the exhaust pipe is made of a hard material, and the other end of the cooling block is made of an elastic material. A connecting frame is fixedly connected to the outer wall of the exhaust pipe, and an arc-shaped pressing plate is elastically connected to the connecting frame, and the arc-shaped pressing plate is fitted with the elastic end of the cooling block. A blocking head is elastically connected to one end of the cooling block facing the exhaust pipe, and a push rod for pressing the blocking head is fixedly connected to the outer wall of the exhaust pipe.

2. The electrostatic precipitator with flue gas waste heat recovery according to claim 1, characterized in that: The interior of the heat recovery box is connected to one end of an air supply pipe, the other end of the air supply pipe extends to the interior of the ventilation box, the interior of the heat recovery box is fixedly connected to a partition plate, the interior of the heat recovery box is divided into a first chamber and a second chamber by the partition plate, the first chamber is connected to the bottom of the second chamber, one end of the air supply pipe is located in the first chamber, and the exhaust pipe is located above the first chamber.

3. The electrostatic precipitator with flue gas waste heat recovery according to claim 2, characterized in that: The cleaning block is fixedly connected to one end of the slide bar facing the converter, one end of the cleaning block is in contact with the heat absorbing end of the converter, and a push block is fixedly connected to the outer wall of the slide bar.

4. The electrostatic precipitator with flue gas waste heat recovery according to claim 3, characterized in that: The pneumatic assembly includes a piston cylinder fixedly connected to one side of the ventilation box, the top end of the piston cylinder is fixedly connected to a sub-control box, the interior of the sub-control box is connected to one end of a steam pipe, the other end of the steam pipe extends to the interior of the second chamber, the interior of the sub-control box is slidably connected to an air control block, one end of the air control block close to the ventilation box is fixedly connected to one end of a control rod, and the other end of the control rod extends out of the outer wall of the sub-control box.

5. The electrostatic precipitator with flue gas waste heat recovery according to claim 4, characterized in that: The side wall of the ventilation box is fixedly connected with a connecting plate, and one side of the connecting plate is rotatably connected with a first swing arm and a second swing arm, and the first swing arm and the second swing arm are both connected to the control rod. The side wall of the sub-control box is provided with an air outlet, and the bottom end of the sub-control box is provided with a first air hole, and the top end of the piston cylinder is provided with a second air hole, and the first air hole and the second air hole correspond to each other. The bottom end of the sub-control box is provided with a third air hole, and the top end of the piston cylinder is provided with a fourth air hole, and the third air hole and the fourth air hole correspond to each other, and the piston cylinder is slidably connected with a piston.

6. The electrostatic precipitator with flue gas waste heat recovery according to claim 5, characterized in that: A cavity is provided inside the sliding rod, a connecting tube is fixedly connected to the air outlet, the other end of the connecting tube extends to the inside of the sliding rod, a cavity is provided inside the cleaning block, the cleaning block is connected to the inner cavity of the sliding rod, and a blowing port is provided at one end of the cleaning block close to the converter.

7. The electrostatic precipitator with flue gas waste heat recovery according to claim 6, characterized in that: The outer wall of the exhaust pipe is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a winding roller, the bottom outer wall of the arc pressure plate is fixedly connected to a pull rod, the pull rod is fixedly connected to a pull rope, and the other end of the pull rope is fixedly connected to the winding roller.

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