Boiler flue gas condensation waste heat recovery device

Abstract

The utility model discloses a boiler flue gas condensation waste heat recovery device, and relates to the technical field of flue gas waste heat recovery, the boiler flue gas condensation waste heat recovery device comprises a boiler body, one side of the bottom end of the boiler body is provided with a motor through a mounting plate, the output end of the motor is fixedly connected with a first rotating shaft, and the first rotating shaft penetrates into the boiler body; one end of the first rotating shaft is fixedly connected with a first bevel gear, and the bottom end of the interior of the furnace body is fixedly connected with a protective shell. A motor is arranged to drive a first rotating shaft to rotate, when the first rotating shaft rotates, a second bevel gear is driven to rotate through a first bevel gear, when the second bevel gear rotates, a fixing plate is driven to rotate through a second rotating shaft, meanwhile, when the second rotating shaft rotates, a connecting shaft is driven to rotate through a first disc, and when the connecting shaft rotates, a connecting frame is driven to move; and the connecting frame drives the annular cleaning plate to move when moving, in the design, smoke can be distributed more evenly, the heat exchanger can be cleaned, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of flue gas waste heat recovery technology, specifically a boiler flue gas condensation waste heat recovery device. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. During the operation of the boiler, hot flue gas is generated. When recovering the waste heat from the condensation of the hot flue gas, a flue gas condensation waste heat recovery device is required.

[0003] Patent CN221055607U discloses a boiler flue gas condensation waste heat recovery device. It can quickly exchange heat with flue gas through heat exchange tubes, thereby recovering the heat of flue gas. The filter screen can filter the flue gas to reduce the entry of dust and other impurities into the device. After the device is used, the filter screen is pulled out and the external water collection structure is installed at the bottom of the device. The external cleaning water inlet structure is connected and fixed to the water guide pipe. The cleaning water is introduced into the nozzle through the water guide pipe and sprayed onto the heat exchange tube through the nozzle to clean the surface of the heat exchange tube.

[0004] However, existing waste heat recovery devices still have problems when in use. The distribution of flue gas is uneven, which reduces the heat exchange efficiency. Also, after a period of use, it is difficult to replace the filter screen. Utility Model Content

[0005] The purpose of this utility model is to provide a boiler flue gas condensation waste heat recovery device to solve the problems mentioned in the background art, such as uneven distribution of flue gas, reduced heat exchange efficiency, and difficulty in replacing the filter screen after a period of use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a boiler flue gas condensation waste heat recovery device, comprising a furnace body, a motor mounted on one side of the bottom end of the furnace body via a mounting plate, providing a power source, a first rotating shaft fixedly connected to the output end of the motor, allowing rotation, the first rotating shaft penetrating into the interior of the furnace body, a first bevel gear fixedly connected to one end of the first rotating shaft, allowing transmission through meshing, a protective shell fixedly connected to the bottom end of the interior of the furnace body, providing protection and support, a second rotating shaft rotatably connected to the top end of the protective shell, allowing rotation, a second bevel gear fixedly connected to the bottom end of the second rotating shaft, allowing transmission through meshing, the second bevel gear meshing with the first bevel gear, a fixing plate fixedly connected to the outer side of the second rotating shaft, allowing rotation.

[0007] Preferably, a first disc is fixedly connected to the top of the second rotating shaft, allowing it to rotate. A connecting shaft is fixedly connected to the top of the first disc, serving as a connection. A support plate is fixedly connected inside the furnace body, providing support. A connecting frame is slidably connected inside the support plate, serving as a connection and allowing it to move. One end of the connecting frame is fixedly connected to an annular cleaning plate, serving as a cleaning plate.

[0008] Preferably, the bottom of the furnace body is provided with an air inlet to allow flue gas to enter the interior of the furnace body, and the top of the furnace body is provided with an air outlet to discharge the flue gas. The interior of the furnace body is provided with a heat exchanger, which can play a role in waste heat recovery. The heat exchanger is a tubular structure.

[0009] Preferably, the first rotating shaft is rotatably connected to the protective housing, which can provide support for the first rotating shaft.

[0010] Preferably, the number of fixing plates is four, which can make the flue gas distribution more uniform.

[0011] Preferably, a vertical groove that mates with the connecting shaft is provided at the middle position of the connecting frame, and the connecting shaft is slidably connected to the connecting frame, so that the connecting shaft can drive the connecting frame to move through the vertical groove when it rotates.

[0012] Preferably, the annular cleaning plate is located on the outside of the heat exchanger and is slidably connected to the heat exchanger, so that the annular cleaning plate can clean the heat exchanger when it moves.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The motor drives the first rotating shaft to rotate. When the first rotating shaft rotates, it drives the second bevel gear to rotate through the first bevel gear. When the second bevel gear rotates, it drives the fixed plate to rotate through the second rotating shaft. At the same time, when the second rotating shaft rotates, it drives the connecting shaft to rotate through the first disc. When the connecting shaft rotates, it drives the connecting frame to move. When the connecting frame moves, it drives the annular cleaning plate to move. In this design, the flue gas can be distributed more evenly, and the heat exchanger can be cleaned, thus improving the working efficiency.

[0015] 2. A third rotating shaft is installed. When the third rotating shaft rotates, it drives the transmission rod to move through the second disc. When the transmission rod moves, it causes the moving frame to move through the wedge block. When the moving frame moves, it causes the fixed block to detach from the sealing plate. During installation, the sealing plate and filter screen are placed in the designated position by the handle. Then, the third rotating shaft is rotated in the opposite direction. Under the action of the spring force, the moving frame causes the fixed block to insert into the interior of the sealing plate. In this design, the flue gas can be filtered through the filter screen, and the filter screen can be replaced by simple operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is an exploded view of the furnace body structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection of the annular cleaning plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the sealing plate connection of this utility model;

[0020] Figure 5 This is an enlarged view of point A in this utility model;

[0021] Figure 6 This is an enlarged view of section B of this utility model.

[0022] In the diagram: 1. Furnace body; 2. Air inlet; 3. Air outlet; 4. Heat exchanger; 5. Motor; 6. First rotating shaft; 7. Protective shell; 8. First bevel gear; 9. Second rotating shaft; 10. Second bevel gear; 11. Fixing plate; 12. First disc; 13. Connecting shaft; 14. Support plate; 15. Connecting frame; 16. Annular cleaning plate; 17. Sealing plate; 18. Filter screen; 19. Handle; 20. Third rotating shaft; 21. Second disc; 22. Transmission rod; 23. Wedge block; 24. Moving frame; 25. Fixing block; 26. Spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6This utility model provides a technical solution for a boiler flue gas condensation waste heat recovery device: it includes a furnace body 1, a motor 5 is mounted on one side of the bottom of the furnace body 1 via a mounting plate, the output end of the motor 5 is fixedly connected to a first rotating shaft 6, the first rotating shaft 6 penetrates into the interior of the furnace body 1, one end of the first rotating shaft 6 is fixedly connected to a first bevel gear 8, when the first rotating shaft 6 rotates, it can drive the first bevel gear 8 to rotate, a protective shell 7 is fixedly connected to the bottom of the interior of the furnace body 1, a second rotating shaft 9 is rotatably connected to the top of the protective shell 7, a second bevel gear 10 is fixedly connected to the bottom of the second rotating shaft 9, the second bevel gear 10 meshes with the first bevel gear 8, so that when the first bevel gear 8 rotates, it can drive the second bevel gear 10 to rotate, and a fixing plate 11 is fixedly connected to the outside of the second rotating shaft 9.

[0025] In this embodiment: by starting the motor 5, the motor 5 drives the first rotating shaft 6 to rotate. When the first rotating shaft 6 rotates, it drives the first bevel gear 8 to rotate. When the first bevel gear 8 rotates, it drives the second bevel gear 10 meshing with it to rotate. When the second bevel gear 10 rotates, it drives the second rotating shaft 9 to rotate. When the second rotating shaft 9 rotates, it drives the fixed plate 11 to rotate. This can make the flue gas distribution more uniform and improve the heat exchange efficiency.

[0026] Please see Figure 2 , Figure 3 and Figure 5 The top of the second rotating shaft 9 is fixedly connected to the first disc 12, and the top of the first disc 12 is fixedly connected to the connecting shaft 13, so that the first disc 12 can drive the connecting shaft 13 to rotate when it rotates. The inside of the furnace body 1 is fixedly connected to the support plate 14, and the inside of the support plate 14 is slidably connected to the connecting frame 15, so that the connecting frame 15 can move stably. One end of the connecting frame 15 is fixedly connected to the annular cleaning plate 16.

[0027] In this embodiment: when the second rotating shaft 9 rotates, it drives the first disc 12 to rotate. When the first disc 12 rotates, it drives the connecting shaft 13 to rotate. When the connecting shaft 13 rotates, it drives the connecting frame 15 to move. When the connecting frame 15 moves, it drives the annular cleaning plate 16 to move, thereby cleaning the heat exchanger 4 and preventing the heat exchanger 4 from being affected by excessive dust.

[0028] Please see Figure 1 , Figure 2 and Figure 3The furnace body 1 has an air inlet 2 at the bottom and an air outlet 3 at the top. A heat exchanger 4 is installed inside the furnace body 1. A first rotating shaft 6 is rotatably connected to a protective shell 7, which can support the first rotating shaft 6. There are four fixing plates 11. A vertical groove that cooperates with the connecting shaft 13 is opened at the middle position of the connecting frame 15. The connecting shaft 13 is slidably connected to the connecting frame 15, so that the connecting shaft 13 can drive the connecting frame 15 to move when it rotates. An annular cleaning plate 16 is located on the outside of the heat exchanger 4. The annular cleaning plate 16 is slidably connected to the heat exchanger 4, so that the annular cleaning plate 16 can clean the heat exchanger 4 when it moves. The heat exchanger 4 is a tubular structure.

[0029] In this embodiment: the air inlet 2 allows flue gas to enter the interior of the furnace body 1, the air outlet 3 allows flue gas to be discharged, the heat exchanger 4 allows waste heat recovery from the flue gas, the four fixed plates 11 improve the heat exchange efficiency, the vertical grooves allow the connecting shaft 13 to move the connecting frame 15 when rotating, and the annular cleaning plate 16 cleans the heat exchanger 4.

[0030] Please see Figure 1 , Figure 4 and Figure 6 A sealing plate 17 is detachably connected to one side of the top of the furnace body 1. A filter screen 18 is fixedly connected to one side of the sealing plate 17, and a handle 19 is fixedly connected to the other side of the sealing plate 17. A third rotating shaft 20 is rotatably connected to one side of the top of the furnace body 1. A second disc 21 is fixedly connected to one end of the third rotating shaft 20. A transmission rod 22 is rotatably connected to one side of the second disc 21. A wedge block 23 is slidably connected inside the furnace body 1. One end of the wedge block 23 is rotatably connected to the transmission rod 22, so that the transmission rod 22 can drive the wedge block 23 to move when it moves. A moving frame 24 is slidably connected to one side of the wedge block 23 inside the furnace body 1. A fixing block 25 is fixedly connected to one end of the moving frame 24. A fixing groove that cooperates with the fixing block 25 is opened inside the sealing plate 1. A spring 26 is set inside the furnace body 1 above the moving frame 24. One end of the spring 26 is fixedly connected to the moving frame 24.

[0031] In this embodiment: by rotating the third rotating shaft 20, the second disk 21 is driven to rotate, and the transmission rod 22 is moved when the second disk 21 rotates. When the transmission rod 22 moves, the wedge block 23 moves, and the moving frame 24 moves when the wedge block 23 moves. When the moving frame 24 moves, the fixing block 25 moves, causing the fixing block 25 to detach from the sealing plate 17. Then, the sealing plate 17 and the filter screen 18 can be removed by using the handle 19. During installation, the sealing plate 17 and the filter screen 18 are placed in the designated position by using the handle 19. Then, the third rotating shaft 20 is rotated in the opposite direction. Under the elastic force of the spring 26, the moving frame 24 drives the fixing block 25 to reset, so that the fixing block 25 is inserted into the interior of the sealing plate 17 to fix the filter screen 18. The flue gas can be filtered through the filter screen 18, and the filter screen 18 can be replaced by simple operation.

[0032] Working Principle: During operation, flue gas enters the furnace body 1 through the air inlet 2. Simultaneously, the motor 5 is started, driving the first rotating shaft 6 to rotate. The rotation of the first rotating shaft 6 drives the first bevel gear 8 to rotate, which in turn drives the meshing second bevel gear 10 to rotate. The rotation of the second bevel gear 10 drives the second rotating shaft 9 to rotate, which in turn drives the fixed plate 11 to rotate. This allows for more even distribution of flue gas, improving heat exchange efficiency. Simultaneously, the rotation of the second rotating shaft 9 drives the first disc 12 to rotate, which in turn drives the connecting shaft 13 to rotate. The rotation of the connecting shaft 13 moves the connecting frame 15, which in turn moves the annular cleaning plate 16 to clean the heat exchanger 4, preventing excessive dust from affecting its working efficiency. This process not only ensures more even distribution of flue gas but also cleans the heat exchanger 4, improving working efficiency. Finally, the flue gas is filtered through the filter screen 18. The filtered flue gas is then discharged from the outlet 3. When the filter screen 18 needs to be replaced, the third rotating shaft 20 can be rotated. When the third rotating shaft 20 rotates, it drives the second disc 21 to rotate. When the second disc 21 rotates, it drives the transmission rod 22 to move. When the transmission rod 22 moves, it drives the wedge block 23 to move. When the wedge block 23 moves, it causes the moving frame 24 to move. When the moving frame 24 moves, it drives the fixing block 25 to move, causing the fixing block 25 to detach from the sealing plate 17. Then, the sealing plate 17 and the filter screen 18 can be removed by using the handle 19. During installation, the sealing plate 17 and the filter screen 18 can be placed in the designated position by using the handle 19. Then, the third rotating shaft 20 is rotated in the opposite direction. Under the elastic force of the spring 26, the moving frame 24 drives the fixing block 25 to reset, so that the fixing block 25 is inserted into the interior of the sealing plate 17 to fix the filter screen 18. The flue gas can be filtered through the filter screen 18, and the filter screen 18 can be replaced by simple operation.

[0033] Furthermore, all content not described in detail in this specification is prior art known to those skilled in the art.

[0034] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boiler flue gas condensation waste heat recovery device, comprising a furnace body (1), characterized in that: A motor (5) is mounted on one side of the bottom of the furnace body (1) via a mounting plate. The output end of the motor (5) is fixedly connected to a first rotating shaft (6). The first rotating shaft (6) extends into the interior of the furnace body (1). One end of the first rotating shaft (6) is fixedly connected to a first bevel gear (8). A protective shell (7) is fixedly connected to the bottom of the interior of the furnace body (1). A second rotating shaft (9) is rotatably connected to the top of the protective shell (7). A second bevel gear (10) is fixedly connected to the bottom of the second rotating shaft (9). The second bevel gear (10) meshes with the first bevel gear (8). A fixing plate (11) is fixedly connected to the outer side of the second rotating shaft (9).

2. The boiler flue gas condensation waste heat recovery device according to claim 1, characterized in that: The top of the second rotating shaft (9) is fixedly connected to the first disc (12), the top of the first disc (12) is fixedly connected to the connecting shaft (13), the inside of the furnace body (1) is fixedly connected to the support plate (14), the inside of the support plate (14) is slidably connected to the connecting frame (15), and one end of the connecting frame (15) is fixedly connected to the annular cleaning plate (16).

3. The boiler flue gas condensation waste heat recovery device according to claim 1, characterized in that: The furnace body (1) has an air inlet (2) at the bottom and an air outlet (3) at the top. The furnace body (1) has a heat exchanger (4) inside, which is a tubular structure.

4. The boiler flue gas condensation waste heat recovery device according to claim 1, characterized in that: The first rotating shaft (6) is rotatably connected to the protective housing (7).

5. The boiler flue gas condensation waste heat recovery device according to claim 1, characterized in that: The number of the fixing plates (11) is four.

6. A boiler flue gas condensation waste heat recovery device according to claim 2, characterized in that: The connecting frame (15) has a vertical groove at the middle position that matches the connecting shaft (13), and the connecting shaft (13) is slidably connected to the connecting frame (15).

7. A boiler flue gas condensation waste heat recovery device according to claim 2, characterized in that: The annular cleaning plate (16) is located on the outside of the heat exchanger (4), and the annular cleaning plate (16) is slidably connected to the heat exchanger (4).

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