Waste gas recovery device for thermal power plant

Abstract

The present invention relates to the technical field of thermal power plants, and discloses a waste gas recovery device for a thermal power plant, comprising a cylinder body, wherein a first connecting pipe is fixedly connected to one side of the cylinder body, a first housing is fixedly connected to the end of the first connecting pipe provided on the outside of the cylinder body, a fixing ring is fixedly connected to a circumferential inner wall of the first housing, a waste container is provided on the top of the fixing ring, and a circumferential outer wall of the waste container is in contact with the circumferential inner wall of the first housing. In the present invention, an absorption liquid in the cylinder body, a filter plate, second connecting pipes and the first housing work in conjunction, so that waste gas can be filtered multiple times, thereby greatly improving the filtration efficiency of the waste gas and avoiding the problem of insufficient filtration precision. In addition, by providing a cover plate, the waste container and a magnetic strip, the filter plate can be quickly replaced, so that the operation is simple and fast when the filter plate is replaced, and cumbersome replacement of an old filter screen or other complex operations are not required.

Description

A waste gas recovery device for thermal power plants Technical Field

[0001] This invention relates to the field of thermal power plant technology, specifically to a waste gas recovery device for thermal power plants. Background Technology

[0002] Thermal power plants generate a large amount of waste gas during industrial production. This waste gas not only pollutes the environment but may also pose a health threat to the community. In order to deal with this waste gas, thermal power plants usually need to introduce recycling equipment.

[0003] A search revealed Chinese patent CN218306773U, which discloses an industrial waste gas recovery device, including a filter box. The filter box contains a fixed plate and a filter bag, with the fixed plate fixedly connected to the inner wall of the filter box. The filter bag is positioned at the bottom of the fixed plate. However, this device suffers from the following drawback: it uses only a single filter bag to filter the waste gas. This single-bag filtration method is prone to insufficient filtration precision when dealing with complex waste gases, resulting in poor filtration performance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a waste gas recovery device for thermal power plants. The main purpose is to solve the problem that using only a single filter bag to filter waste gas can easily lead to insufficient filtration accuracy when dealing with complex waste gases, resulting in poor filtration performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A waste gas recovery device for thermal power plants includes a cylindrical body. A first connecting pipe is fixedly connected to one side of the cylindrical body. A first housing is fixedly connected to one end of the first connecting pipe located on the outer side of the cylindrical body. A fixing ring is fixedly connected to the inner circumference of the first housing. A waste box is provided at the top of the fixing ring, and the outer circumference of the waste box contacts the inner circumference of the first housing. A through groove is provided at the bottom of the waste box. A filter plate is provided on the inner wall of the waste box. A lifting mechanism for easy replacement of the filter plate is provided at the top of the first housing. Multiple guide rods are fixedly connected between the inner walls of the two sides of the cylindrical body. Two sliders are slidably connected between each pair of adjacent guide rods. A second connecting pipe is rotatably connected between each pair of adjacent guide rods. Multiple through holes are provided on the outer circumference of the two second connecting pipes, and the multiple through holes are all located on the upper surface of the second connecting pipes. A flexible hose is fixedly connected to the outer circumference of the two second connecting pipes, and the flexible hose communicates with the second connecting pipe. A pushing mechanism for moving the two second connecting pipes is provided on the inner wall of the bottom of the cylindrical body.

[0007] Furthermore, the lifting mechanism includes a cover plate, which is disposed on the top of the first housing. A magnetic strip is fixedly connected to the top of the waste box, and the magnetic strip is attracted to the cover plate. A limiting mechanism for fixing the cover plate is provided on the outer circumference of the first housing.

[0008] Based on the aforementioned scheme, the limiting mechanism includes multiple protrusions, which are uniformly and fixedly connected to the outer circumferential wall of the first housing. Multiple threaded rods are slidably connected to the top of the cover plate, and the threaded rods are threadedly connected to the protrusions. Each of the multiple threaded rods is fixedly connected to a pressure plate at one end of the top of the cover plate, and the bottom of the multiple pressure plates is in contact with the top of the cover plate.

[0009] As a further embodiment of the present invention, the pushing mechanism includes a bottom shell, which is fixedly connected to the bottom inner wall of the cylinder. A motor is fixedly connected to one side of the bottom shell, and the output shaft of the motor passes through the bottom shell and is connected to a missing gear via a key. A guide frame is fixedly connected to one side inner wall of the cylinder. A fixed frame is slidably connected to the outer circumference of the guide frame, and two second connecting pipes are rotatably connected to the fixed frame. A third rack is fixedly connected to the bottom of the fixed frame, and the third rack meshes with the missing gear. A tension spring is fixedly connected to one side of the fixed frame, and the other end of the tension spring is fixed to the guide frame.

[0010] Furthermore, two first racks are fixedly connected to one side of the cylinder, and two second racks are fixedly connected to one side of the cylinder. One end of each of the two second connecting tubes passes through the slider and is fixedly connected to a first gear, and the first gear can mesh with the first rack and the second rack.

[0011] Based on the aforementioned scheme, a second guide pipe connected to the cylinder is fixedly connected to one side of the cylinder. A spiral blade is fixedly connected to the outer circumference of the output shaft of the motor, and the outer side of the spiral blade is in contact with the inner circumference of the second guide pipe. A second housing connected to the second guide pipe is fixedly connected to one end of the second guide pipe. A first guide pipe connected to the second housing is fixedly connected to one side of the second housing, and the first guide pipe is fixed to the cylinder. A filtration mechanism for filtering the absorbent liquid is provided on the inner wall of the second housing.

[0012] As a further embodiment of the present invention, the filtration mechanism is a filter element, which is disposed on the inner wall of the second housing.

[0013] Furthermore, an air outlet pipe is fixedly connected to the top of the cylinder, and the air outlet pipe is connected to the cylinder. An air inlet pipe is fixedly connected to the outer circumference of the first shell, and the air inlet pipe is connected to the first shell. A flange is fixedly connected to one end of both the air inlet pipe and the air outlet pipe.

[0014] Compared with the prior art, the present invention provides a waste gas recovery device for thermal power plants, which has the following beneficial effects:

[0015] 1. This invention achieves multiple filtrations of waste gas by using the absorbent liquid, filter plate, second connecting pipe, and first shell in the cylinder, which greatly improves the filtration efficiency of waste gas, avoids the problem of insufficient filtration accuracy, ensures the safety and environmental protection of the emitted gas, and improves the efficiency and effectiveness of the waste gas recovery equipment.

[0016] 2. This invention enables quick replacement of the filter plate by incorporating a cover plate, a waste box, and a magnetic strip. This makes filter plate replacement simple and fast, eliminating the need for tedious old filter replacement or other complex operations. This reduces equipment downtime, improves filtration efficiency and equipment maintenance efficiency, and the waste box can collect the impurities filtered out by the filter plate for convenient subsequent processing.

[0017] 3. By using the combination of the missing gear, the third rack, and the fixing frame, this invention greatly increases the range of exhaust gas injection through the through hole, thereby significantly increasing the contact area between the exhaust gas and the absorbent liquid. As the exhaust gas passes through the absorbent liquid, it can be more fully absorbed and purified, and the filtration efficiency is greatly improved.

[0018] 4. By using the first gear, the first rack, and the second rack in combination, the present invention further improves the range of exhaust gas injection through the through hole, so that the exhaust gas can be evenly injected into the absorbent liquid, thereby significantly improving the filtration efficiency of the absorbent liquid.

[0019] 5. This invention, by incorporating spiral plates and a filter element, achieves filtration of the absorbent liquid, effectively removing impurities and particulate matter. This not only greatly improves the utilization rate of the absorbent liquid but also significantly saves resources. Attached Figure Description

[0020] Figure 1 is a three-dimensional structural schematic diagram of a waste gas recovery device for thermal power plants proposed in this invention.

[0021] Figure 2 is a schematic cross-sectional view of the cylindrical structure of a waste gas recovery device for thermal power plants proposed in this invention.

[0022] Figure 3 is a partially enlarged structural schematic diagram of a waste gas recovery device for thermal power plants proposed in this invention.

[0023] Figure 4 is a schematic cross-sectional view of the first shell structure of a waste gas recovery device for thermal power plants proposed in this invention.

[0024] Figure 5 is an enlarged structural schematic diagram of the waste box of a thermal power plant waste gas recovery device proposed in this invention.

[0025] In the diagram: 1. Cylinder; 2. Exhaust pipe; 3. Cover plate; 4. First shell; 5. First connecting pipe; 6. Second shell; 7. First guide pipe; 8. First rack; 9. Second rack; 10. Spiral blade; 11. Second guide pipe; 12. Filter element; 13. Gear; 14. Guide frame; 15. Guide rod; 16. Slider; 17. Tension spring; 18. Fixing frame; 19. Third rack; 20. Second connecting pipe; 21. Through hole; 22. Hose; 23. First gear; 24. Magnetic strip; 25. Pressure plate; 26. Protrusion; 27. Waste box; 28. Fixing ring; 29. ​​Filter plate; 30. Inlet pipe; 31. Through groove; 32. Bottom shell; 33. Threaded rod. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Referring to Figures 1-5, a waste gas recovery device for a thermal power plant includes a cylindrical body 1. A first connecting pipe 5 is welded to one side of the cylindrical body 1. A first housing 4 is bolted to one end of the first connecting pipe 5 located on the outer side of the cylindrical body 1. An outlet pipe 2 is welded to the top of the cylindrical body 1, and the outlet pipe 2 is connected to the cylindrical body 1. An inlet pipe 30 is welded to the outer circumference of the first housing 4, and the inlet pipe 30 is connected to the first housing 4. A flange is welded to one end of both the inlet pipe 30 and the outlet pipe 2, allowing for easy connection of the inlet pipe 30. The connection between the exhaust pipe 2 and the external pipeline greatly improves the efficiency of installation and maintenance. A fixing ring 28 is welded to the inner circumference of the first housing 4. A waste box 27 is provided at the top of the fixing ring 28, and the outer circumference of the waste box 27 is in contact with the inner circumference of the first housing 4. A through groove 31 is provided at the bottom of the waste box 27. A filter plate 29 is provided on the inner wall of the waste box 27. A lifting mechanism is provided at the top of the first housing 4 to facilitate the replacement of the filter plate 29. Multiple guide rods are welded between the inner walls of the two sides of the cylinder 1. 15. Two sliders 16 are slidably connected between each pair of adjacent guide rods 15. A second connecting pipe 20 is rotatably connected between each pair of adjacent guide rods 15 via a bearing. Multiple through holes 21 are opened on the outer circumference of the two second connecting pipes 20, and the multiple through holes 21 are all located on the upper surface of the second connecting pipes 20. A hose 22 is fixed to the outer circumference of the two second connecting pipes 20 by bolts, and the hose 22 is connected to the second connecting pipe 20. A pushing mechanism is provided on the inner wall of the bottom of the cylinder 1 to drive the two second connecting pipes 20 to move. The exhaust gas enters the first housing 4, passes through the filter plate 29 from the first housing 4 and enters the first connecting pipe 5. The exhaust gas in the first connecting pipe 5 enters the two second connecting pipes 20 through the two hoses 22 respectively. The exhaust gas in the second connecting pipe 20 is evenly sprayed into the absorbent liquid in the cylinder 1 through the multiple through holes 21, so that the exhaust gas is filtered multiple times by the filter plate 29 and the absorbent liquid in the cylinder 1, which greatly improves the filtration efficiency of the exhaust gas and avoids the problem of insufficient filtration accuracy.

[0028] In this invention, the lifting mechanism includes a cover plate 3, which is disposed on the top of the first housing 4. A magnetic strip 24 is bolted to the top of the waste box 27, and the magnetic strip 24 is attracted to the cover plate 3. The magnetic force of the magnetic strip 24 is greater than the weight of the waste box 27 and the filter plate 29. A limiting mechanism for fixing the cover plate 3 is provided on the outer circumference of the first housing 4. The limiting mechanism includes multiple protrusions 26, which are evenly fixed to the outer circumference of the first housing 4 by bolts. Multiple threaded rods 33 are slidably connected to the top of the cover plate 3, and the threaded rods 33 are threadedly connected to the protrusions 26. Each end of the multiple threaded rods 33 at the top of the cover plate 3 is bolted to a pressure plate 25, and the bottom of the multiple pressure plates 25 is in contact with the top of the cover plate 3. Rotating the pressure plate 25 causes the threaded rods 33 to rotate. The threaded rod 33 is threadedly connected to the protrusion 26. At the same time, the threaded rod 33 drives the pressure plate 25 to move downward, so that the pressure plate 25 contacts the cover plate 3, thereby achieving quick fixation of the cover plate 3. By rotating the limiting mechanism, the cover plate 3 is disengaged from the fixation. Then, the cover plate 3 is pulled upward, so that the cover plate 3 is disengaged from the first housing 4. At the same time, the cover plate 3 drives the magnetic strip 24 to move upward. The magnetic strip 24 drives the waste box 27 and the filter plate 29 to move upward, so that the waste box 27 is disengaged from the first housing 4. Then, the filter plate 29 is taken out from the waste box 27, and a new filter plate 29 is put into the waste box 27. Then, the waste box 27 is put into the first housing 4, and then the cover plate 3 is closed. This achieves quick replacement of the filter plate 29, greatly reducing downtime and improving filtration efficiency and equipment maintenance efficiency.

[0029] In this invention, the driving mechanism includes a bottom shell 32, which is welded to the inner wall of the bottom of the cylinder 1. A motor is fixed to one side of the bottom shell 32 by bolts, and the output shaft of the motor passes through the bottom shell 32 and is connected to a missing gear 13 via a key. A guide frame 14 is fixed to the inner wall of one side of the cylinder 1 by bolts. A fixed frame 18 is slidably connected to the outer circumference of the guide frame 14, and both second connecting pipes 20 are rotatably connected to the fixed frame 18. A third rack 19 is fixed to the bottom of the fixed frame 18 by bolts, and the third rack 19 meshes with the missing gear 13. A tension spring 17 is fixed to one side of the fixed frame 18 by bolts, and the other end of the tension spring 17 is fixed to the guide frame 14. When the motor is started, the output shaft of the motor drives the missing gear 13 to rotate. The third rack 19 moves to the right, which in turn moves the fixed frame 18 to the right. The fixed frame 18 then moves the two second connecting pipes 20 to the right. When the missing gear 13 rotates to the missing tooth position, it cannot mesh with the rack. The tension of the tension spring 17 causes the fixed frame 18 to move to the left, which in turn moves the two second connecting pipes 20 to the left. At the same time, the fixed frame 18 moves the third rack 19 to the left, causing the third rack 19 to reset. This process is repeated, causing the two second connecting pipes 20 to move back and forth. This greatly increases the range of exhaust gas injection through the through hole 21, thereby increasing the contact area between the exhaust gas and the absorbent liquid. This further improves the efficiency of exhaust gas filtration, making the exhaust gas recovery equipment more effective at recovering exhaust gas.

[0030] In this invention, two first racks 8 are fixed to one side of the cylinder 1 by bolts, and two second racks 9 are fixed to one side of the cylinder 1 by bolts. One end of each of the two second connecting pipes 20 passes through the slider 16 and is fixed with a first gear 23 by bolts. The first gear 23 can mesh with the first racks 8 and the second racks 9. The two second connecting pipes 20 move back and forth, which drives the first gear 23 to move back and forth. The first gear 23 meshes with the first racks 8 and the second racks 9 in sequence, causing the first gear 23 to rotate back and forth. The first gear 23 drives the second connecting pipes 20 to swing, thereby further increasing the range of exhaust gas injection through the through hole 21, so that the exhaust gas can be evenly injected into the absorbent liquid, thereby improving the filtration efficiency of the absorbent liquid for exhaust gas.

[0031] In this invention, a second guide pipe 11 connected to the cylinder 1 is welded to one side of the cylinder 1. A spiral blade 10 is welded to the outer circumference of the motor output shaft, and the outer side of the spiral blade 10 contacts the inner circumference of the second guide pipe 11. A second housing 6 connected to the second guide pipe 11 is welded to one end of the second guide pipe 11. A first guide pipe 7 connected to the second housing 6 is welded to one side of the second housing 6, and the first guide pipe 7 is fixed to the cylinder 1. A filtration mechanism for filtering the absorbent liquid is provided on the inner wall of the second housing 6. The filtration mechanism is a filter element 12. The filter element 12 is installed on the inner wall of the second housing 6 and then filters the diluent, effectively removing impurities and particulate matter, thereby improving the utilization rate of the absorbent and greatly saving resources. The motor output shaft drives the spiral blade 10 to rotate, and the spiral blade 10 pushes the absorbent in the cylinder 1 through the first guide pipe 11 into the second housing 6. The diluent passes through the filtration mechanism and enters the first guide pipe 7, and then flows back into the cylinder 1 through the second guide pipe 7, thereby circulating the absorbent. Then, the diluent is filtered by the filtration mechanism, thereby improving the utilization rate of the absorbent.

[0032] The working principle of this embodiment is as follows: During use, exhaust gas enters the first housing 4 through the inlet pipe 30, passes through the filter plate 29 from the first housing 4, and enters the first connecting pipe 5. The exhaust gas from the first connecting pipe 5 enters the two second connecting pipes 20 through two hoses 22 respectively. The exhaust gas in the second connecting pipes 20 is evenly sprayed into the absorbent liquid in the cylinder 1 through multiple through holes 21. At the same time, the motor is started, and the output shaft of the motor drives the missing gear 13 to rotate. The missing gear 13 drives the third rack 19 to move to the right. The third rack 19 drives the fixed frame 18 to move to the right. The fixed frame 18 drives the two second connecting pipes 20 to move to the right. When the missing gear 13 rotates to the missing tooth position, the missing gear 13 and the rack cannot mesh. The tension of the tension spring 17 drives the fixed frame 18 to move to the left. The fixed frame 18 drives the two... The second connecting pipe 20 moves to the left, and at the same time, the fixing bracket 18 drives the third rack 19 to move to the left, so that the third rack 19 returns to its original position. This process is repeated, causing the two second connecting pipes 20 to move back and forth, which greatly increases the range of exhaust gas injection through the through hole 21. The two second connecting pipes 20 move back and forth, and the two second connecting pipes 20 drive the first gear 23 to move back and forth. The first gear 23 meshes with the first rack 8 and the second rack 9 in sequence, causing the first gear 23 to rotate back and forth. The first gear 23 drives the second connecting pipe 20 to swing. At the same time, the motor output shaft drives the spiral blade 10 to rotate. The spiral blade 10 pushes the absorbent liquid in the cylinder 1 through the first guide pipe 11 into the second shell 6. The diluted liquid passes through the filter element 12 into the first guide pipe 7, and then flows back into the cylinder 1 through the second guide pipe 7.

[0033] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0034] In the description herein, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to fixed connections, mechanical connections, electrical connections, or direct connections. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0035] In the description herein, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste gas recovery device for thermal power plants, comprising a cylindrical body (1), characterized in that, A first connecting pipe (5) is fixedly connected to one side of the cylinder (1). A first housing (4) is fixedly connected to one end of the first connecting pipe (5) located on the outside of the cylinder (1). A fixing ring (28) is fixedly connected to the inner circumference of the first housing (4). A waste box (27) is provided at the top of the fixing ring (28), and the outer circumference of the waste box (27) is in contact with the inner circumference of the first housing (4). A through groove (31) is provided at the bottom of the waste box (27). A filter plate (29) is provided on the inner wall of the waste box (27). A lifting mechanism is provided at the top of the first housing (4) to facilitate the replacement of the filter plate (29). The two sides of the cylinder (1) Multiple guide rods (15) are fixedly connected between the inner walls. Two sliders (16) are slidably connected between each pair of adjacent guide rods (15). A second connecting pipe (20) is rotatably connected between each pair of adjacent guide rods (15). Multiple through holes (21) are opened on the outer circumference of the two second connecting pipes (20), and the multiple through holes (21) are all located on the upper surface of the second connecting pipes (20). A hose (22) is fixedly connected to the outer circumference of the two second connecting pipes (20), and the hose (22) is connected to the second connecting pipe (20). The inner wall of the bottom of the cylinder (1) is provided with a pushing mechanism that drives the two second connecting pipes (20) to move.

2. The waste gas recovery equipment for thermal power plants according to claim 1, characterized in that, The lifting mechanism includes a cover plate (3), which is located on the top of the first housing (4). A magnetic strip (24) is fixedly connected to the top of the waste box (27), and the magnetic strip (24) is attracted to the cover plate (3). A limiting mechanism for fixing the cover plate (3) is provided on the outer circumference of the first housing (4).

3. The waste gas recovery equipment for thermal power plants according to claim 2, characterized in that, The limiting mechanism includes multiple protrusions (26), which are uniformly fixedly connected to the outer circumferential wall of the first housing (4). Multiple threaded rods (33) are slidably connected to the top of the cover plate (3), and the threaded rods (33) are threadedly connected to the protrusions (26). Each of the multiple threaded rods (33) is fixedly connected to a pressure plate (25) at one end of the top of the cover plate (3), and the bottom of the multiple pressure plates (25) is in contact with the top of the cover plate (3).

4. The waste gas recovery equipment for thermal power plants according to claim 1, characterized in that, The pushing mechanism includes a bottom shell (32), which is fixedly connected to the bottom inner wall of the cylinder (1). A motor is fixedly connected to one side of the bottom shell (32), and the output shaft of the motor passes through the bottom shell (32) and is connected to a missing gear (13) via a key. A guide frame (14) is fixedly connected to one side inner wall of the cylinder (1). A fixed frame (18) is slidably connected to the outer circumference of the guide frame (14), and two second connecting pipes (20) are rotatably connected to the fixed frame (18). A third rack (19) is fixedly connected to the bottom of the fixed frame (18), and the third rack (19) meshes with the missing gear (13). A tension spring (17) is fixedly connected to one side of the fixed frame (18), and the other end of the tension spring (17) is fixed to the guide frame (14).

5. The waste gas recovery equipment for thermal power plants according to claim 4, characterized in that, Two first racks (8) are fixedly connected to one side of the cylinder (1), and two second racks (9) are fixedly connected to one side of the cylinder (1). One end of each of the two second connecting tubes (20) passes through the slider (16) and is fixedly connected to a first gear (23). The first gear (23) can mesh with the first rack (8) and the second rack (9).

6. The waste gas recovery equipment for thermal power plants according to claim 5, characterized in that, A second guide pipe (11) connected to the cylinder (1) is fixedly connected to one side of the cylinder (1). A spiral blade (10) is fixedly connected to the outer circumference of the output shaft of the motor, and the outer side of the spiral blade (10) is in contact with the inner circumference of the second guide pipe (11). A second housing (6) connected to the second guide pipe (11) is fixedly connected to one end of the second guide pipe (11). A first guide pipe (7) connected to the second housing (6) is fixedly connected to one side of the second housing (6), and the first guide pipe (7) is fixed to the cylinder (1). A filtration mechanism for filtering the absorbent liquid is provided on the inner wall of the second housing (6).

7. The waste gas recovery equipment for thermal power plants according to claim 6, characterized in that, The filtration mechanism is a filter element (12), which is disposed on the inner wall of the second housing (6).

8. The waste gas recovery equipment for thermal power plants according to claim 6, characterized in that, The top of the cylinder (1) is fixedly connected to an air outlet pipe (2), which is connected to the cylinder (1). An air inlet pipe (30) is fixedly connected to the outer circumference of the first shell (4), and the air inlet pipe (30) is connected to the first shell (4). One end of the air inlet pipe (30) and the air outlet pipe (2) are both fixedly connected to a flange.

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