Opposite firing secondary reheating boiler

Abstract

The invention discloses an opposed firing secondary reheating boiler, which relates to the technical field of boilers, and comprises a boiler body, a connecting pipe fixed on the outer surface of the boiler body; through cooperation of a smoke exhaust pipe, an annular fixing plate, a cavity and a vibration unit, the function that a traction ring drives a striking rod to strike the annular fixing plate is achieved, so that the annular fixing plate vibrates, accumulated ash and slag attached to the surface of the annular fixing plate are shaken off and temporarily stored through a discharging frame, and the discharging efficiency is improved. Wherein the traction ring moves synchronously with the scraping rings when sliding on the supporting rod, so that the inner wall of the smoke exhaust pipe is scraped together, attachment of accumulated ash and slag to the inner wall of the pipe is further reduced, smoothness of a flue is kept, the discharging pipe is smoother during discharging through cooperation of the flapping unit and the traction assembly, and the discharging efficiency is improved. And meanwhile, the smoke exhaust pipe and the discharging frame are vibrated to a certain degree, so that impurities on the inner wall of the smoke exhaust pipe are further vibrated off, the cleaning effect is improved, and the using effect of the boiler is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of boilers, and particularly to a opposed firing secondary reheat boiler. Background Art

[0002] A boiler is an energy conversion device. The energy input into the boiler includes the chemical energy in fuel and electric energy, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of heat energy. The original meaning of "pot" refers to a water container heated over fire, and "furnace" refers to a place for burning fuel. A boiler includes two major parts: the pot and the furnace. The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's livelihood, or can be converted into mechanical energy through a steam power device, or further converted into electric energy through a generator. A boiler that provides hot water is called a hot water boiler, which is mainly used for life and has a small amount of application in industrial production. A boiler that generates steam is called a steam boiler, often simply referred to as a boiler, and is mostly used in thermal power plants, ships, locomotives and industrial and mining enterprises. A secondary reheat boiler belongs to a type of boiler.

[0003] In the prior art, when the secondary reheat boiler on the market is in use, the secondary reheat boiler will carry out flue gas recycling through the internal primary low-temperature reheater and secondary low-temperature reheater. In actual use, when the secondary reheat boiler is in use, with the continuous expansion of the boiler capacity, coupled with the reasons of the introduced technology, the problems existing in the installation process and the failure of the boiler operation level to keep up in time, there are some problems in the operation of the boiler. For example, ash and slag are likely to accumulate in the exhaust pipe of the boiler, increasing the resistance of the flue, which may lead to an increase in the load of equipment such as induced draft fans. At the same time, it may also block the flue pipe and cause a boiler shutdown accident. For this reason, we propose an opposed firing secondary reheat boiler. Summary of the Invention

[0004] The purpose of the present invention is to provide an opposed firing secondary reheat boiler to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An opposed firing secondary reheat boiler, including a boiler body, further including:

[0006] A connecting pipe, the connecting pipe is fixed on the outer surface of the boiler body. The end of the connecting pipe is fixed with an exhaust pipe, the exhaust end of the exhaust pipe is fixed with a butt joint pipe, the lower end of the outer surface of the exhaust pipe is fixed with a feeding frame, and the bottom of the feeding frame is fixed with a waste valve;

[0007] Support rods, two support rods are provided and symmetrically distributed and fixed to the inner wall of the exhaust pipe. An annular fixing plate is fixed to one side of the inner wall of the exhaust pipe close to the docking pipe. A cavity is provided on one side of the annular fixing plate corresponding to the inner wall of the exhaust pipe. A vibration unit is arranged inside the exhaust pipe and is matched with the annular fixing plate. The discharge end of the waste valve is fixed with a discharge pipe, and a flapping unit is arranged on the outer surface of the blanking frame corresponding to the discharge pipe.

[0008] Preferably, the vibration unit includes:

[0009] A rotating shaft, the rotating shaft is rotatably connected to one side of the inner wall of the exhaust pipe. Two symmetrically distributed rotating wheels are fixedly sleeved on the outer surface of the rotating shaft. A driving motor coaxially connected to the rotating shaft is fixedly installed on the outer surface of the exhaust pipe. A traction ring is slidably connected to the inner wall of the exhaust pipe. The two support rods movably penetrate through the traction ring;

[0010] Extrusion blocks, two extrusion blocks are provided and symmetrically distributed and fixed to one side of the traction ring. The rotating wheels correspond to the extrusion blocks one by one. Two striking rods are fixed to one side of the traction ring and are distributed up and down. A first spring matched with the traction ring is sleeved on the outer surface of the support rod.

[0011] Preferably, the vibration unit further includes:

[0012] Scraping rings, multiple scraping rings are provided and sequentially fixed to the other side of the traction ring. The scraping rings are attached to the inner wall of the exhaust pipe. A T-shaped connecting rod is fixed to the middle of the bottom surface of the scraping ring. A connecting frame is fixed to the end of the T-shaped connecting rod. Multiple evenly distributed cutting rods are fixed to the bottom surface of the connecting frame corresponding to the blanking frame.

[0013] Preferably, the flapping unit includes:

[0014] A movable rod, the movable rod movably penetrates through one side of the discharge pipe. A flapping plate is fixed to one end of the movable rod. The flapping plate is located inside the discharge pipe. A movable plate is fixed to the other end of the movable rod. A second spring is sleeved on the outer surface of the movable rod corresponding to the movable plate. A T-shaped top rod is arranged below the discharge pipe. Triangular extrusion seats matched with the movable plate are fixed to both ends of the T-shaped top rod.

[0015] Preferably, the flapping unit further includes a movable rod fixed to the T-shaped top rod. A pull rod is fixed to the end of the movable rod. A traction assembly matched with the pull rod is arranged on the outer surface of the exhaust pipe.

[0016] Preferably, the traction assembly includes:

[0017] The supporting rod is fixed to the outer surface of the smoke exhaust pipe. A rectangular rod is fixed to the bottom of the supporting rod. A rotating rod is fixed to the end of the rotating shaft. An extrusion column is fixed to the end of the rotating rod. A movable frame is movably sleeved on the outer surface of the extrusion column. A sleeve is slidably sleeved on the outer surface of the rectangular rod. The end of the movable frame is fixed to the outer surface of the sleeve. The end of the pull rod is fixed to the outer surface of the sleeve.

[0018] Preferably, a limiting rod is fixed to the outer surface of the blanking frame, and the limiting rod movably penetrates through the moving rod.

[0019] Preferably, a collision block is fixed to the end of the striking rod, and the collision block is matched with the outer surface of the annular fixing plate.

[0020] Preferably, the smoke exhaust pipe is communicated with the blanking frame, and an L shape is formed between the sleeve and the pull rod.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The cooperation of the smoke exhaust pipe, the annular fixing plate, the cavity and the vibration unit of the present invention realizes the function that the traction ring drives the striking rod to strike the annular fixing plate, so that the annular fixing plate generates vibration, and further shakes off the ash and slag adhering to its surface, and temporarily stores it through the blanking frame. When the traction ring slides on the support rod, it moves synchronously with multiple scraping rings, so as to scrape the inner wall of the smoke exhaust pipe together, further reducing the adhesion of ash and slag on the inner wall of the pipe and keeping the flue unobstructed. Through the cooperation of the beating unit and the traction assembly, the discharge pipe is smoother during blanking, and at the same time, a certain vibration is applied to the smoke exhaust pipe and the blanking frame, so as to further shake off the impurities on the inner wall of the smoke exhaust pipe, improve the cleaning effect, and thus improve the use effect of the boiler.

[0023] 2. When the scraping ring moves, the connecting frame drives the cutting rod to swing horizontally in the blanking frame, so as to cut the slag impurities in the blanking frame, making the waste valve smoother during blanking and reducing blockage. The limiting rod limits the moving rod to maintain the stability of the movement of the triangular extrusion seat. The striking rod drives the collision block to strike the annular fixing plate to improve the vibration effect. The waste in the blanking frame is discharged through the waste valve, which brings convenience to the cleaning work of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the present invention from another perspective;

[0026] Figure 3 It is a sectional view of the structure of the smoke exhaust pipe of the present invention;

[0027] Figure 4 Schematic diagram of the vibration unit structure of the present invention;

[0028] Figure 5 Schematic diagram of the overall structure of the traction ring of the present invention;

[0029] Figure 6 Schematic diagram of the annular fixing plate structure of the present invention;

[0030] Figure 7 Schematic diagram of the partial structure of the present invention;

[0031] Figure 8 Schematic diagram of the flapping unit structure of the present invention.

[0032] In the figure: 1. Boiler body; 2. Connecting pipe; 3. Smoke exhaust pipe; 4. Docking pipe; 5. Feeding frame; 6. Waste valve; 7. Support rod; 8. Annular fixing plate; 9. Cavity; 10. Discharge pipe; 11. Rotating shaft; 12. Runner; 13. Driving motor; 14. Traction ring; 15. Extrusion block; 16. Striking rod; 17. First spring; 18. Scraping ring; 19. T-shaped connecting rod; 20. Connecting frame; 21. Cutting rod; 22. Movable rod; 23. Flapping plate; 24. Movable plate; 25. Second spring; 26. T-shaped ejector rod; 27. Triangular extrusion seat; 28. Moving rod; 29. Pull rod; 30. Supporting rod; 31. Rectangular rod; 32. Rotating rod; 33. Extrusion column; 34. Movable frame; 35. Sleeve; 36. Limiting rod; 37. Bumping block. Detailed implementation manners

[0033] 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 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.

[0034] Embodiment 1

[0035] Please refer to Figure 1-8 , the present invention provides a technical solution: a counter-flow combustion secondary reheating boiler, including a boiler body 1, and further including:

[0036] A connecting pipe 2, the connecting pipe 2 is fixed on the outer surface of the boiler body 1, the end of the connecting pipe 2 is fixed with a smoke exhaust pipe 3, the exhaust end of the smoke exhaust pipe 3 is fixed with a docking pipe 4, the lower end of the outer surface of the smoke exhaust pipe 3 is fixed with a feeding frame 5, the bottom of the feeding frame 5 is fixed with a waste valve 6, and the smoke exhaust pipe 3 is communicated with the feeding frame 5;

[0037] Support rods 7, two support rods 7 are provided and symmetrically distributed and fixed to the inner wall of the exhaust pipe 3. An annular fixing plate 8 is fixed to one side of the inner wall of the exhaust pipe 3 close to the docking pipe 4. A cavity 9 is provided on one side of the annular fixing plate 8 corresponding to the inner wall of the exhaust pipe 3. A vibration unit is arranged inside the exhaust pipe 3 and is matched with the annular fixing plate 8. The discharge end of the waste valve 6 is fixed with a discharge pipe 10, and a flapping unit is arranged on the outer surface of the blanking frame 5 corresponding to the discharge pipe 10.

[0038] It should be noted that the waste gas generated during the operation of the boiler body 1 is discharged from the connecting pipe 2, then passes through the exhaust pipe 3, and finally enters the next treatment process from the docking pipe 4. The annular fixing plate 8 protects one side of the inner wall of the exhaust pipe 3. At the same time, the vibration unit cooperates with the cavity 9 of the annular fixing plate 8, so that the annular fixing plate 8 generates vibration, thereby shaking off the slag and impurities attached to the annular fixing plate 8. The cavity 9 improves the vibration effect of the annular fixing plate 8. When the vibration unit strikes the annular fixing plate 8, it simulates drumming, thereby generating vibration.

[0039] Furthermore, as shown in Figure 1 , Figure 3 , Figure 4 and Figure 5 shown, specifically, the vibration unit includes:

[0040] A rotating shaft 11, the rotating shaft 11 is rotatably connected to one side of the inner wall of the exhaust pipe 3. Two symmetrically distributed runners 12 are fixedly sleeved on the outer surface of the rotating shaft 11. A driving motor 13 coaxially connected to the rotating shaft 11 is fixedly installed on the outer surface of the exhaust pipe 3. A traction ring 14 is slidably connected to the inner wall of the exhaust pipe 3. The two support rods 7 movably penetrate through the traction ring 14;

[0041] Extrusion blocks 15, two extrusion blocks 15 are provided and symmetrically distributed and fixed to one side of the traction ring 14. The runners 12 correspond to the extrusion blocks 15 one by one. Two striking rods 16 distributed up and down are fixed to one side of the traction ring 14. A first spring 17 matched with the traction ring 14 is sleeved on the outer surface of the support rod 7.

[0042] It should be noted that one end of the first spring 17 is fixed to the inner wall of the exhaust pipe 3, and the other end of the first spring 17 is fixed to the surface of the traction ring 14; the driving motor 13 drives the rotation of the rotating shaft 11, thereby driving the rotation of the two rotating wheels 12. Under the elastic force of the first spring 17, the traction ring 14 is pushed to move towards the rotating wheel 12, so that the pressing block 15 on the traction ring 14 is attached to the outer surface of the rotating wheel 12, and when the rotating wheel 12 rotates, its two ends are in contact with the pressing block 15 in turn, thereby driving the traction ring 14 to slide reciprocally on the support rod 7. Then the traction ring 14 drives the end of the striking rod 16 to strike the surface of the annular fixing plate 8, so that the annular fixing plate 8 generates vibration, and further vibrates the slag impurities attached to its surface, avoiding corrosion at the pipe orifice position and facilitating the cleaning work of the exhaust pipe 3.

[0043] Further, as shown in Figure 2 , Figure 7 and Figure 8 , it is specifically worth noting that the flapping unit includes:

[0044] A movable rod 22, the movable rod 22 movably penetrates through one side of the discharge pipe 10, one end of the movable rod 22 is fixed with a flap 23, the flap 23 is located inside the discharge pipe 10, the other end of the movable rod 22 is fixed with a movable plate 24, and a second spring 25 is sleeved on the outer surface of the movable rod 22 corresponding to the movable plate 24. A T-shaped top rod 26 is arranged below the discharge pipe 10, and triangular pressing seats 27 matched with the movable plate 24 are fixed at both ends of the T-shaped top rod 26.

[0045] The flapping unit further includes a moving rod 28 fixed to the T-shaped top rod 26, a pull rod 29 is fixed at the end of the moving rod 28, and a traction assembly matched with the pull rod 29 is arranged on the outer surface of the exhaust pipe 3.

[0046] It is worth noting that one end of the second spring 25 is fixed to the outer surface of the discharge pipe 10, and the other end of the second spring 25 is fixed to the surface of the movable plate 24; the traction assembly drives the moving rod 28 to move up and down through the pull rod 29, and when the moving rod 28 moves up, it moves up through the T-shaped top rod 26, and then pushes the two triangular pressing seats 27 to move up and squeeze the movable plate 24. The movable plate 24 moves along the inclined surface of the triangular pressing seat 27, so that the movable plate 24 pulls the movable rod 22, and further makes the flap 23 move from one side of the inner wall of the discharge pipe 10 to the other side, so that the flap 23 beats the discharge pipe 10. On the one hand, it can prevent the discharge pipe 10 from being blocked when discharging waste, and on the other hand, it can crush the ash particles and impurities to facilitate the discharging of impurities. At the same time, when the flap 23 beats, it can make the blanking frame 5 and the exhaust pipe 3 generate a certain vibration, further avoiding the attachment of slag impurities to the inner wall of the exhaust pipe 3 and keeping the exhaust of the exhaust pipe 3 unobstructed.

[0047] Embodiment 2

[0048] Based on the first embodiment, according to Figure 4 As shown, it is worth noting that the vibration unit also includes:

[0049] A scraper ring 18 is provided in plurality and is fixed in sequence on the other side of the traction ring 14. The scraper ring 18 fits the inner wall of the smoke exhaust pipe 3. A T-shaped lever 19 is fixed in the middle of the bottom surface of the scraper ring 18. A connecting frame 20 is fixed at the end of the T-shaped lever 19. A plurality of evenly distributed cutting rods 21 are fixed on the bottom surface of the connecting frame 20 corresponding to the unloading frame 5.

[0050] It should be noted that when the traction ring 14 moves horizontally back and forth, it drives multiple scraper rings 18 to slide on the inner wall of the smoke exhaust pipe 3, thereby cleaning the attachments on the inner wall of the smoke exhaust pipe 3, greatly reducing the attachment of impurities such as ash, and at the same time, when the scraper ring 18 moves, it drives the cutting rod 21 to swing horizontally in the unloading frame 5 through the connecting frame 20, thereby chopping the impurities in the unloading frame 5, making the waste valve 6 smoother when unloading.

[0051] Further as Figure 4 and Figure 7 As shown, it is worth noting that the traction assembly includes:

[0052] The support rod 30 is fixed to the outer surface of the smoke exhaust pipe 3, a rectangular rod 31 is fixed to the bottom of the support rod 30, a rotating rod 32 is fixed to the end of the rotating shaft 11, an extrusion column 33 is fixed to the end of the rotating rod 32, a movable frame 34 is movably sleeved on the outer surface of the extrusion column 33, a sleeve 35 is slidably sleeved on the outer surface of the rectangular rod 31, an end of the movable frame 34 is fixed to the outer surface of the sleeve 35, an end of the pull rod 29 is fixed to the outer surface of the sleeve 35, and an L-shape is formed between the sleeve 35 and the pull rod 29.

[0053] It is worth mentioning that the sleeve 35 is limited in the vertical moving direction by the rectangular rod 31, so that the stability of the sleeve 35 during movement is maintained, thereby limiting the movable frame 34; the rotating shaft 11 drives the rotating rod 32 to rotate when rotating, and then the extrusion column 33 squeezes the movable frame 34, so that the movable frame 34 moves vertically up and down, and the movable frame 34 drives the sleeve 35 to slide on the rectangular rod 31 when moving, thereby driving the pull rod 29 to move, and then driving the triangular extrusion seat 27 to move, so that the clapper 23 performs a clapping process.

[0054] Further as Figure 5 and Figure 7As shown, it is worth explaining in detail that a limiting rod 36 is fixed on the outer surface of the blanking frame 5, and the limiting rod 36 movably penetrates the moving rod 28. A collision block 37 is fixed on the end of the striking rod 16, and the collision block 37 cooperates with the outer surface of the annular fixed plate 8. The moving rod 28 is limited by the limiting rod 36, which can, on the one hand, ensure the stability of the pull rod 29 when it moves vertically up and down, and on the other hand, improve the stability of the vertical movement of the triangular extrusion seat 27; the striking rod 16 drives the collision block 37 to hit the annular fixed plate 8 to improve the vibration effect.

[0055] Working principle: The driving motor 13 drives the rotating shaft 11 to rotate, thereby driving the two rotating wheels 12 to rotate, and under the elastic force of the first spring 17, the traction ring 14 is pushed to move in the direction of the rotating wheel 12, so that the extrusion block 15 on the traction ring 14 is close to the outer surface of the rotating wheel 12, so that when the rotating rotating wheel 12 rotates, its two ends are in contact with the extrusion block 15 in turn, thereby driving the traction ring 14 to slide back and forth on the support rod 7, and then the traction ring 14 drives the end of the striking rod 16 to knock on the surface of the annular fixing plate 8, so that the annular fixing plate 8 vibrates, and then the slag impurities attached to its surface vibrate to prevent the pipe mouth from being corroded. When the traction ring 14 moves horizontally back and forth, it drives multiple scraper rings 18 to slide on the inner wall of the smoke exhaust pipe 3, thereby cleaning the attachments on the inner wall of the smoke exhaust pipe 3, greatly reducing the attachment of impurities such as ash, and at the same time, when the scraper ring 18 moves, it drives the cutting rod 21 to swing horizontally in the unloading frame 5 through the connecting frame 20, thereby chopping the impurities in the unloading frame 5, so that the waste valve 6 is at the bottom. The material is more smoothly fed, the rotating shaft 11 drives the rotating rod 32 to rotate when rotating, and then the extrusion column 33 squeezes the movable frame 34, so that the movable frame 34 moves vertically up and down, and the movable frame 34 drives the sleeve 35 to slide on the rectangular rod 31 when moving, so that the pull rod 29 drives the moving rod 28 to move up and down, and the moving rod 28 moves up through the T-shaped push rod 26 when moving up, and then pushes the two triangular extrusion seats 27 to move up and squeeze the movable plate 24, and the movable plate 24 moves along the inclined surface of the triangular extrusion seat 27 Move, so that the movable plate 24 pulls the movable rod 22, and then the clapping board 23 moves from one side of the inner wall of the discharge pipe 10 to the other side, so that the clapping board 23 slaps the discharge pipe 10. On the one hand, it can prevent the discharge pipe 10 from being blocked when discharging waste, and on the other hand, it can break up the slag impurities to facilitate the discharge of impurities. At the same time, the clapping board 23 can make the discharge frame 5 and the smoke exhaust pipe 3 vibrate to a certain extent when slapping, which further prevents ash impurities from adhering to the inner wall of the smoke exhaust pipe 3 and keeps the exhaust of the smoke exhaust pipe 3 unobstructed.

[0056] According to the above working process, it can be seen that the cooperation of the smoke exhaust pipe 3, the annular fixing plate 8, the cavity 9 and the vibration unit of the present invention realizes the function of the traction ring 14 driving the striking rod 16 to strike the annular fixing plate 8, so that the annular fixing plate 8 generates vibration, and then shakes off the ash and slag adhering to its surface, and temporarily stores it through the blanking frame 5. When the traction ring 14 slides on the support rod 7, it moves synchronously with a plurality of scraping rings 18, so as to scrape the inner wall of the smoke exhaust pipe 3 together, further reducing the adhesion of ash and slag on the inner wall of the pipe and keeping the flue unobstructed. Through the cooperation of the flapping unit and the traction assembly, the discharge pipe 10 is made more smooth during blanking, and at the same time, a certain vibration is applied to the smoke exhaust pipe 3 and the blanking frame 5, so as to further shake off the impurities on the inner wall of the smoke exhaust pipe 3, improve the cleaning effect, and thus improve the use effect of the boiler. When the scraping ring 18 moves, the present invention drives the cutting rod 21 to swing horizontally in the blanking frame 5 through the connecting frame 20, so as to cut the slag impurities in the blanking frame 5, making the waste valve 6 more smooth during blanking and reducing blockage. The limiting rod 36 limits the moving rod 28 to maintain the stability of the movement of the triangular pressing seat 27. The striking rod 16 drives the striker 37 to strike the annular fixing plate 8 to improve the vibration effect. The waste in the blanking frame 5 is discharged through the waste valve 6, which brings convenience to the cleaning work of the staff.

[0057] The drive motor 13 can be purchased on the market and is equipped with a power supply separately, which is a mature technology in this field and has been fully disclosed, so it will not be repeated in the specification.

[0058] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0059] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hedging combustion secondary reheat boiler, comprising a boiler body (1), characterized in that: It further includes: A connecting pipe (2), which is fixed to the outer surface of the boiler body (1). A smoke exhaust pipe (3) is fixed to the end of the connecting pipe (2). A docking pipe (4) is fixed to the exhaust end of the smoke exhaust pipe (3). A blanking frame (5) is fixed to the lower end of the outer surface of the smoke exhaust pipe (3). A waste valve (6) is fixed to the bottom of the blanking frame (5); Support rods (7), there are two support rods (7) which are symmetrically distributed and fixed to the inner wall of the smoke exhaust pipe (3). An annular fixing plate (8) is fixed to one side of the inner wall of the smoke exhaust pipe (3) close to the docking pipe (4). A cavity (9) is formed on one side of the annular fixing plate (8) corresponding to the inner wall of the smoke exhaust pipe (3). A vibration unit matching with the annular fixing plate (8) is arranged inside the smoke exhaust pipe (3). A discharge pipe (10) is fixed to the discharge end of the waste valve (6). A flapping unit is arranged on the outer surface of the blanking frame (5) corresponding to the discharge pipe (10).

2. The dual reheat boiler with opposed firing according to claim 1, characterized in that: The vibration unit includes: A rotating shaft (11), which is rotatably connected to one side of the inner wall of the smoke exhaust pipe (3). Two symmetrically distributed runners (12) are fixedly sleeved on the outer surface of the rotating shaft (11). A driving motor (13) coaxially connected to the rotating shaft (11) is fixedly installed on the outer surface of the smoke exhaust pipe (3). A traction ring (14) is slidably connected to the inner wall of the smoke exhaust pipe (3). The two support rods (7) movably penetrate through the traction ring (14); Extrusion blocks (15), there are two extrusion blocks (15) which are symmetrically distributed and fixed to one side of the traction ring (14). The runners (12) correspond to the extrusion blocks (15) one by one. Two strikers (16) distributed vertically are fixed to one side of the traction ring (14). A first spring (17) matching with the traction ring (14) is sleeved on the outer surface of the support rod (7).

3. A counter-flow combustion type double reheat boiler according to claim 2, characterized in that: The vibration unit further includes: Scraping rings (18), there are multiple scraping rings (18) which are sequentially fixed to the other side of the traction ring (14). The scraping rings (18) are in contact with the inner wall of the smoke exhaust pipe (3). A T-shaped connecting rod (19) is fixed to the middle of the bottom surface of the scraping ring (18). A connecting frame (20) is fixed to the end of the T-shaped connecting rod (19). Multiple uniformly distributed cutting rods (21) are fixed to the bottom surface of the connecting frame (20) corresponding to the blanking frame (5).

4. A counter-flow combustion secondary reheat boiler according to claim 2, characterized in that: The flapping unit includes: A movable rod (22), which movably penetrates through one side of the discharge pipe (10). A flapping plate (23) is fixed to one end of the movable rod (22). The flapping plate (23) is located inside the discharge pipe (10). A movable plate (24) is fixed to the other end of the movable rod (22). A second spring (25) is sleeved on the outer surface of the movable rod (22) corresponding to the movable plate (24). A T-shaped top rod (26) is arranged below the discharge pipe (10). Triangular extrusion seats (27) matching with the movable plate (24) are fixed to both ends of the T-shaped top rod (26).

5. The one kind of opposed firing and double reheat boiler according to claim 4, characterized in that: The flapping unit further includes a moving rod (28) fixed to the T-shaped ejector rod (26). A pull rod (29) is fixed to the end of the moving rod (28). A traction assembly matching with the pull rod (29) is arranged on the outer surface of the exhaust pipe (3).

6. The dual reheat boiler with opposed firing according to claim 5, characterized in that: The traction assembly includes: A support rod (30) fixed to the outer surface of the exhaust pipe (3). A rectangular rod (31) is fixed to the bottom of the support rod (30). A rotating rod (32) is fixed to the end of the rotating shaft (11). An extrusion column (33) is fixed to the end of the rotating rod (32). A movable frame (34) is movably sleeved on the outer surface of the extrusion column (33). A sleeve (35) is slidably sleeved on the outer surface of the rectangular rod (31). The end of the movable frame (34) is fixed to the outer surface of the sleeve (35). The end of the pull rod (29) is fixed to the outer surface of the sleeve (35).

7. The opposed-firing secondary reheat boiler according to claim 4, characterized in that: A limiting rod (36) is fixed to the outer surface of the blanking frame (5). The limiting rod (36) movably penetrates through the moving rod (28).

8. The dual reheat boiler with opposed firing according to claim 2, wherein: A collision block (37) is fixed to the end of the striking rod (16). The collision block (37) matches with the outer surface of the annular fixing plate (8).

9. A counter-flow combustion dual reheat boiler according to claim 6, wherein: The exhaust pipe (3) is communicated with the blanking frame (5). An L shape is formed between the sleeve (35) and the pull rod (29).

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