Environment-friendly flue conversion device with heat energy recovery function and method thereof

Abstract

The application discloses an environment-friendly flue conversion device with a heat energy recycling function and a method thereof, and belongs to the technical field of fine chemical engineering equipment. In order to solve the problem of heat energy loss caused by incomplete flue gas heat exchange treatment, heat exchange fins are arranged in the heat exchange channel, the heat exchange fins are arranged in a radial array, and the heat exchange fins are internally provided with serpentine pipes. The arrangement of the serpentine pipes and the heat exchange fins enables the main pipeline to have good wear resistance in flue gas, the radial array arrangement is uniform and consistent with the flue gas contact surface, uneven flue gas flow in the cross section is avoided, the full contact of high-temperature flue gas and the first heat exchange assembly is improved, the heat exchange efficiency is improved, the cooling water is used to perform second-stage heat exchange and dust and sulfur removal on the flue gas through the spray head, the cooling water is filtered through the filter screen after the second-stage heat exchange and is discharged, the residual heat in the flue gas is recycled through the second-stage heat exchange while the flue gas is effectively dust and sulfur removed, the heat exchange efficiency of the flue gas is improved, and the heat energy is fully utilized.

Description

Technical Field

[0001] This invention relates to the field of fine chemical equipment technology, and in particular to an environmentally friendly flue gas conversion device and method with heat energy recovery function. Background Technology

[0002] Regarding the recovery of heat energy from boiler flue gas through flues, relevant patents already exist. For example, application number CN201720434106.1 discloses a boiler flue gas heat energy recovery and utilization device, including a flue through which boiler flue gas passes. This patented device recovers and utilizes the heat from the boiler flue gas to heat tap water, supplying hot water to employee bathhouses. It can recover the heat energy from the boiler flue gas, improve the overall thermal efficiency of fuel, increase the economic benefits of enterprises, and reduce environmental pollution. Simultaneously, it can eliminate the need for the original steam heating system required for heating bath water.

[0003] The aforementioned patents actually have the following problems in practice:

[0004] 1. Existing heat exchange components often use water pipes arranged around the pipeline for heat conduction. The contact between flue gas and heat exchange water is insufficient, which can easily lead to a large amount of heat loss and affect heat exchange efficiency.

[0005] 2. After heat exchange, the flue gas often retains some heat. Direct emission can easily lead to heat loss. At the same time, when the flue gas is emitted, dust removal and sulfur reduction operations are required, which will take away most of the heat, resulting in heat energy loss and waste.

[0006] 3. During the process of heat exchange and dust removal and sulfur reduction of flue gas, the filter screen is easily clogged by impurities after long-term use, which affects the filtration effect and causes the heat exchange water to be unable to flow smoothly. Summary of the Invention

[0007] The purpose of this invention is to provide an environmentally friendly flue gas conversion device and method with heat energy recovery function to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly flue gas conversion device with heat recovery function, comprising a boiler, a main flue, a first heat exchange component, and a second heat exchange component. The boiler's exhaust port is connected to the main flue, and the other end of the main flue is connected to the first heat exchange component. The first heat exchange component and the second heat exchange component are connected through a flue gas collection trough. An exhaust pipe is connected to the second heat exchange component. The output end of a first water pump is connected to the first heat exchange component through a first water inlet pipe, and the output end of a second water pump is connected to the second heat exchange component through a second water inlet pipe. Both the first heat exchange component and the second heat exchange component are connected to a drain end through pipes.

[0009] Furthermore, the first heat exchange component includes a main pipe, a heat exchange channel, heat exchange fins, a water inlet, a water outlet, a first ring pipe, a second ring pipe, and a serpentine pipe. The main pipe has a heat exchange channel inside, and heat exchange fins are arranged radially inside the heat exchange channel. The main pipe has a water inlet and a water outlet outside, both of which are connected to the inside of the main pipe. The inner wall of the main pipe has a first ring pipe and a second ring pipe, which are respectively located at both ends of the main pipe. The heat exchange fins have a serpentine pipe inside, and both ends of the serpentine pipe are connected to the first ring pipe and the second ring pipe, respectively.

[0010] Furthermore, the first ring pipe is connected to the water inlet, and the second ring pipe is connected to the water outlet.

[0011] Furthermore, the water inlet is connected to the output end of the first water pump via a first water inlet pipe, and the water outlet is connected to the drain end via a pipe.

[0012] Furthermore, the second heat exchange component includes a main body, a flue gas inlet, a flue gas outlet, a pipe groove, a water tank, a water outlet, a filter screen, a cleaning mechanism, a motor, a spray pipe, a spray head, and an impurity outlet. The top of the front and rear ends of the main body are respectively provided with a flue gas inlet and a flue gas outlet. The flue gas inlet is connected to the flue gas collection trough, and the flue gas outlet is connected to the exhaust pipe. A pipe groove is opened in the inner top of the main body, and a water tank is opened in the inner bottom of the main body. A water outlet is opened in the bottom of the water tank and is connected to a drain end through a pipe. A filter screen is provided on the top surface of the water tank, and a cleaning mechanism is provided above the filter screen. An impurity outlet is opened on one side of the filter screen. A spray pipe is provided inside the pipe groove, and a spray head is provided on the spray pipe. A motor is provided on one side of the main body.

[0013] Furthermore, the spray pipe is connected to the output end of the second water pump via a second water inlet pipe.

[0014] Furthermore, the cleaning mechanism includes a guide rod, a lead screw, a movable box, a rack, a gear disk, and a cleaning brush. The guide rod and the lead screw are arranged horizontally and parallel. The two ends of the lead screw are rotatably connected to the inner walls of the front and rear ends of the main body. The output shaft of the motor is fixedly connected to one end of the lead screw. The movable box has a sliding hole and a threaded hole. The sliding hole is slidably fitted onto the guide rod, and the threaded hole is meshed with the lead screw. A gear disk is provided at the bottom of the movable box. The central shaft of the gear disk is rotatably connected to the bottom surface of the movable box. A cleaning brush is connected to the bottom of the gear disk through a rotating shaft. A rack is provided on one side of the gear disk. The two ends of the rack are fixedly connected to the inner walls of the front and rear ends of the main body. The gear teeth of the gear disk mesh with the rack teeth.

[0015] Furthermore, the input ends of both the first and second water pumps are connected to an external water source via pipes.

[0016] Furthermore, a rotating shaft is provided inside the main flue, and rotating blades are provided on the outside of the rotating shaft.

[0017] Another technical problem to be solved by the present invention is to provide a method for an environmentally friendly flue gas conversion device with heat energy recovery function, comprising the following steps:

[0018] Step 1: Boiler flue gas enters the first heat exchange component through the main flue;

[0019] Step 2: The first water pump pumps cooling water for heat exchange into the inside of the serpentine tube and the first ring tube. The cooling water performs the first stage of heat exchange on the high-temperature flue gas inside the serpentine tube and then enters the second ring tube and is discharged.

[0020] Step 3: The flue gas after the first stage of heat exchange enters the second heat exchange component through the flue gas collection trough;

[0021] Step 4: The second water pump pumps cool water for heat exchange into the inside of the spray pipe. The cool water performs a second-stage heat exchange on the flue gas through the spray head and removes dust and sulfur. After the second-stage heat exchange, the cool water is filtered through the filter screen and discharged. The motor drives the cleaning mechanism to clean the filter screen.

[0022] Step 5: The flue gas that has passed through the second stage of heat exchange meets the emission requirements and is discharged through the exhaust pipe.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. In the existing technology, existing heat exchange components often use water pipes arranged around the pipeline for heat conduction. The contact between flue gas and heat exchange water is insufficient, which easily leads to a large amount of heat loss and affects the heat exchange efficiency. However, the heat exchange channel of the present invention is provided with heat exchange fins inside, which are arranged in a radial array. The heat exchange fins are provided with serpentine tubes inside. The arrangement of serpentine tubes and heat exchange fins gives the main pipeline good wear resistance in the flue gas. The radial array arrangement ensures uniform contact surface with the flue gas, avoiding uneven flow of flue gas in the cross section. At the same time, it improves the full contact between high-temperature flue gas and the first heat exchange component, thereby improving the heat exchange efficiency.

[0025] 2. In the existing technology, flue gas often retains some heat after heat exchange, and direct emission can easily lead to heat loss. At the same time, when emitting flue gas, dust removal and desulfurization operations are required, which will take away most of the heat, resulting in heat energy loss and waste. However, the second water pump of this invention pumps cool water for heat exchange into the inside of the spray pipe. The cool water performs a second-stage heat exchange and dust removal and desulfurization on the flue gas through the spray head. After the second-stage heat exchange, the cool water is filtered through the filter screen and discharged. This allows for effective dust removal and desulfurization of the flue gas, while the spray water can perform a second-stage heat exchange and recovery of the residual heat in the flue gas, thereby improving the heat exchange efficiency of the flue gas and making full use of heat energy.

[0026] 3. In the existing technology, during the heat exchange and dust removal and sulfur reduction process of flue gas, the filter screen is easily clogged by impurities after long-term use, which affects the filtration effect and prevents the heat exchange water from flowing smoothly. However, the motor of this invention drives the lead screw to rotate, thereby moving the moving box along the direction of the guide rod. While the moving box is moving, the gear disk rotates under the action of the rack, thereby driving the bottom cleaning brush to rotate and clean the filter screen, improving the heat exchange and filtration efficiency of the second heat exchange component, and preventing the filter screen from being clogged by impurities during the heat exchange process, which affects the filtration effect and prevents the heat exchange water from flowing smoothly. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the internal structure at point A in the diagram;

[0029] Figure 3 This is a schematic diagram of the structure of the first heat exchange component of the present invention;

[0030] Figure 4 This is a schematic diagram of the internal structure of the first heat exchange component of the present invention;

[0031] Figure 5 This is a schematic diagram of the internal structure of the second heat exchange component of the present invention;

[0032] Figure 6 This is a side cross-sectional view of the second heat exchange component of the present invention;

[0033] Figure 7 This is a schematic diagram of the cleaning mechanism structure of the present invention.

[0034] In the diagram: 1. Boiler; 2. Main flue; 3. First heat exchange assembly; 301. Main pipe; 302. Heat exchange channel; 303. Heat exchange fins; 304. Water inlet; 305. Water outlet; 306. First ring pipe; 307. Second ring pipe; 308. Serpentine pipe; 4. Smoke collection trough; 5. Second heat exchange assembly; 501. Main body; 502. Smoke inlet; 503. Smoke outlet; 504. Tube trough; 505. Water tank; 506. Water outlet; 50 7. Filter screen; 508. Cleaning mechanism; 5081. Guide rod; 5082. Lead screw; 5083. Moving box; 5084. Rack; 5085. Gear disk; 5086. Cleaning brush; 509. Motor; 510. Spray pipe; 511. Spray head; 512. Impurity outlet; 6. Smoke exhaust pipe; 7. First water pump; 8. First water inlet pipe; 9. Second water pump; 10. Second water inlet pipe; 11. Drainage end; 12. Rotating shaft; 13. Rotating blade. Detailed Implementation

[0035] 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.

[0036] Please see Figure 1-2 An environmentally friendly flue gas conversion device with heat recovery function includes a boiler 1, a main flue 2, a first heat exchange component 3, and a second heat exchange component 5. The main flue 2 is connected to the exhaust port of the boiler 1. A rotating shaft 12 is installed inside the main flue 2, and a rotating blade 13 is installed on the outside of the rotating shaft 12. The other end of the main flue 2 is connected to the first heat exchange component 3. The first heat exchange component 3 and the second heat exchange component 5 are connected through a smoke collection trough 4. An exhaust pipe 6 is connected to the second heat exchange component 5. The output end of the first water pump 7 is connected to the first heat exchange component 3 through a first water inlet pipe 8. The output end of the second water pump 9 is connected to the second heat exchange component 5 through a second water inlet pipe 10. The input ends of the first water pump 7 and the second water pump 9 are both connected to an external water source through pipes. The first heat exchange component 3 and the second heat exchange component 5 are both connected to a drain end 11 through pipes.

[0037] Specifically, the flue gas from boiler 1 enters the first heat exchange component 3 through the main flue 2. The first water pump 7 pumps cooling water for heat exchange into the interior of the first heat exchange component 3. After the cooling water performs the first stage of heat exchange on the high-temperature flue gas, it is discharged. The flue gas after the first stage of heat exchange enters the second heat exchange component 5 through the flue gas collection trough 4. The second water pump 9 pumps cooling water for heat exchange into the interior of the second heat exchange component 5. The cooling water performs the second stage of heat exchange on the flue gas through spraying and removes dust and sulfur. After the cooling water performs the second stage of heat exchange, it is filtered and discharged. The flue gas after the second stage of heat exchange meets the emission requirements and is discharged through the exhaust pipe 6.

[0038] To address the technical problem that existing heat exchange components often use water pipes arranged around a central duct for heat conduction, resulting in insufficient contact between the flue gas and the heat exchange water, leading to significant heat loss and reduced heat exchange efficiency, please refer to [link to relevant documentation]. Figure 1 and Figure 3-4 The present invention provides the following technical solutions:

[0039] The first heat exchange assembly 3 includes a main pipe 301, a heat exchange channel 302, heat exchange fins 303, a water inlet 304, a water outlet 305, a first ring pipe 306, a second ring pipe 307, and a serpentine pipe 308. The heat exchange channel 302 is provided inside the main pipe 301, and the heat exchange fins 303 are arranged radially inside the heat exchange channel 302. The water inlet 304 and the water outlet 305 are provided outside the main pipe 301, and both the water inlet 304 and the water outlet 305 are connected to the inside of the main pipe 301. The first ring pipe 306 and the second ring pipe 307 are provided on the inner wall of the main pipe 301. The first ring pipe 306 and the second ring pipe 307 are respectively located at both ends of the main pipe 301. The serpentine pipe 308 is provided inside the heat exchange fins 303, and the two ends of the serpentine pipe 308 are respectively connected to the first ring pipe 306 and the second ring pipe 307. The first ring pipe 306 is connected to the water inlet 304, and the second ring pipe 307 is connected to the water outlet 305. The water inlet 304 is connected to the output end of the first water pump 7 through the first water inlet pipe 8, and the water outlet 305 is connected to the drain end 11 through a pipe.

[0040] Specifically, the first water pump 7 pumps cooling water for heat exchange into the interior of the serpentine tube 308 and the first ring tube 306. After the cooling water performs the first stage of heat exchange on the high-temperature flue gas inside the serpentine tube 308, it enters the second ring tube 307 and is discharged. The arrangement of the serpentine tube 308 and the heat exchange fins 303 gives the main pipe 301 good wear resistance in the flue gas. The radial array arrangement ensures uniform contact with the flue gas, avoiding uneven flow of flue gas in the cross section. At the same time, it improves the full contact between the high-temperature flue gas and the first heat exchange component 3, thereby improving the heat exchange efficiency.

[0041] To address the issue that flue gas often retains some heat after heat exchange, direct emission can easily lead to heat loss. Furthermore, flue gas emission requires dust removal and sulfur reduction operations, which remove a significant amount of heat, resulting in wasted heat energy. Please refer to [link to relevant documentation]. Figure 1 and Figure 5-6 The present invention provides the following technical solutions:

[0042] The second heat exchange component 5 includes a main body 501, a flue gas inlet 502, a flue gas outlet 503, a pipe groove 504, a water tank 505, a water outlet 506, a filter screen 507, a cleaning mechanism 508, a motor 509, a spray pipe 510, a spray head 511, and an impurity outlet 512. The top of the front and rear ends of the main body 501 are respectively provided with a flue gas inlet 502 and a flue gas outlet 503. The flue gas inlet 502 is connected to the flue gas collection trough 4, and the flue gas outlet 503 is connected to the exhaust pipe 6. A pipe groove 504 is provided on the inner top of the main body 501. 04. A water tank 505 is provided at the bottom of the main body 501. A water outlet 506 is provided at the bottom of the water tank 505. The water outlet 506 is connected to the drain end 11 through a pipe. A filter screen 507 is provided on the top surface of the water tank 505. A cleaning mechanism 508 is provided above the filter screen 507. An impurity outlet 512 is provided on one side of the filter screen 507. A spray pipe 510 is provided inside the pipe trough 504. A spray head 511 is provided on the spray pipe 510. A motor 509 is provided on one side of the main body 501. The spray pipe 510 is connected to the output end of the second water pump 9 through the second water inlet pipe 10.

[0043] Specifically, the second water pump 9 pumps cooling water into the spray pipe 510 for heat exchange. The cooling water passes through the spray head 511 to perform secondary heat exchange and dust removal and sulfur reduction on the flue gas. After secondary heat exchange, the cooling water is filtered through the filter screen 507 and discharged. This allows the spray water to effectively remove dust and reduce sulfur in the flue gas, while also recovering the residual heat in the flue gas through secondary heat exchange, thereby improving the heat exchange efficiency of the flue gas and making full use of thermal energy.

[0044] To address the technical problem encountered during flue gas heat exchange and dust removal / sulfurization processes, where filter screens easily become clogged with impurities over long-term use, resulting in reduced filtration efficiency and hindering the smooth flow of heat exchange water, please refer to [link to relevant documentation]. Figure 6-7 The present invention provides the following technical solutions:

[0045] The cleaning mechanism 508 includes a guide rod 5081, a lead screw 5082, a movable box 5083, a rack 5084, a gear disk 5085, and a cleaning brush 5086. The guide rod 5081 and the lead screw 5082 are arranged horizontally and parallel to each other. The two ends of the lead screw 5082 are rotatably connected to the inner walls of the front and rear ends of the main body 501. The output shaft of the motor 509 is fixedly connected to one end of the lead screw 5082. The movable box 5083 has a sliding hole and a threaded hole. The sliding hole is slidably fitted onto the guide rod 5081. The hole is meshed with the lead screw 5082. A gear disk 5085 is provided at the bottom of the moving box 5083. The central shaft of the gear disk 5085 is rotatably connected to the bottom surface of the moving box 5083. A cleaning brush 5086 is connected to the bottom of the gear disk 5085 through a rotating shaft. A rack 5084 is provided on one side of the gear disk 5085. The two ends of the rack 5084 are fixedly connected to the inner walls of the front and rear ends of the main body 501. The gear teeth of the gear disk 5085 mesh with the rack teeth of the rack 5084.

[0046] Specifically, the motor 509 drives the lead screw 5082 to rotate, which in turn drives the movable box 5083 to move along the direction of the guide rod 5081. While the movable box 5083 is moving, the gear disk 5085 rotates under the action of the rack 5084, which in turn drives the bottom cleaning brush 5086 to rotate and clean the filter screen 507. This improves the heat exchange and filtration efficiency of the second heat exchange component 5 and prevents the filter screen 507 from being clogged by impurities during the heat exchange process, which would affect the filtration effect and prevent the heat exchange water from flowing smoothly out.

[0047] To better demonstrate the environmentally friendly flue gas conversion device with heat recovery function, this embodiment proposes a method for using such a device, including the following steps:

[0048] Step 1: Flue gas from boiler 1 enters the first heat exchange component 3 through the main flue 2;

[0049] Step 2: The first water pump 7 pumps cooling water for heat exchange into the inside of the serpentine tube 308 and the first ring tube 306. The cooling water performs the first stage of heat exchange on the high-temperature flue gas inside the serpentine tube 308 and then enters the second ring tube 307 and is discharged.

[0050] Step 3: The flue gas after the first stage of heat exchange enters the second heat exchange component 5 through the flue gas collection trough 4;

[0051] Step 4: The second water pump 9 pumps cool water for heat exchange into the inside of the spray pipe 510. The cool water performs secondary heat exchange on the flue gas through the spray head 511 and removes dust and sulfur. After the second stage of heat exchange, the cool water is filtered through the filter screen 507 and discharged. The motor 509 drives the cleaning mechanism 508 to clean the filter screen 507.

[0052] Step 5: The flue gas that has passed through the second stage of heat exchange meets the emission requirements and is discharged through the exhaust pipe 6.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An environmentally friendly flue gas conversion device with heat recovery function, comprising a boiler (1), a main flue (2), a first heat exchange component (3), and a second heat exchange component (5), characterized in that: The boiler (1) is connected to a main flue (2) at its exhaust port. The other end of the main flue (2) is connected to a first heat exchange assembly (3). The first heat exchange assembly (3) and the second heat exchange assembly (5) are connected by a flue gas collection trough (4). The second heat exchange assembly (5) is connected to an exhaust pipe (6). The output end of the first water pump (7) is connected to the first heat exchange assembly (3) through a first water inlet pipe (8). The output end of the second water pump (9) is connected to the second heat exchange assembly (5) through a second water inlet pipe (10). The first heat exchange assembly (3) and the second heat exchange assembly (5) are both connected to a drain end (11) through pipes. The first heat exchange assembly (3) includes a main pipe (301), a heat exchange channel (302), heat exchange fins (303), a water inlet (304), a water outlet (305), a first ring pipe (306), and a second ring pipe. The main pipe (301) has a heat exchange channel (302) inside and heat exchange fins (303) inside. The heat exchange fins (303) are arranged in a radial array. The main pipe (301) has an inlet end (304) and an outlet end (305) outside. The inlet end (304) and the outlet end (305) are both connected to the inside of the main pipe (301). The inner wall of the main pipe (301) is provided with a first ring pipe (306) and a second ring pipe (307). The first ring pipe (306) and the second ring pipe (307) are respectively located at both ends of the main pipe (301). The heat exchange fins (303) are provided with a serpentine pipe (308) inside. The two ends of the serpentine pipe (308) are respectively connected to the first ring pipe (306) and the second ring pipe (307).

2. The environmentally friendly flue gas conversion device with heat recovery function as described in claim 1, characterized in that: The first ring pipe (306) is connected to the water inlet (304), and the second ring pipe (307) is connected to the water outlet (305).

3. The environmentally friendly flue gas conversion device with heat recovery function as described in claim 1, characterized in that: The water inlet (304) is connected to the output end of the first water pump (7) through the first water inlet pipe (8), and the water outlet (305) is connected to the drain end (11) through the pipe.

4. The environmentally friendly flue gas conversion device with heat recovery function as described in claim 1, characterized in that: The second heat exchange component (5) includes a main body (501), a smoke inlet (502), a smoke outlet (503), a pipe trough (504), a water tank (505), a water outlet (506), a filter screen (507), a cleaning mechanism (508), a motor (509), a spray pipe (510), a spray head (511), and an impurity outlet (512). The top of the front and rear ends of the main body (501) are respectively provided with a smoke inlet (502) and a smoke outlet (503). The smoke inlet (502) is connected to the smoke collection trough (4), and the smoke outlet (503) is connected to the exhaust pipe (6). The inner top of the main body (501) is provided with a... The main body (501) has a water tank (505) at the bottom of the pipe (504) and a water outlet (506) at the bottom of the water tank (505). The water outlet (506) is connected to the drain end (11) through a pipe. A filter screen (507) is provided on the top surface of the water tank (505). A cleaning mechanism (508) is provided above the filter screen (507). An impurity outlet (512) is provided on one side of the filter screen (507). A spray pipe (510) is provided inside the pipe (504). A spray head (511) is provided on the spray pipe (510). A motor (509) is provided on one side of the main body (501).

5. The environmentally friendly flue gas conversion device with heat recovery function as described in claim 4, characterized in that: The spray pipe (510) is connected to the output end of the second water pump (9) through the second water inlet pipe (10).

6. The environmentally friendly flue gas conversion device with heat recovery function as described in claim 4, characterized in that: The cleaning mechanism (508) includes a guide rod (5081), a lead screw (5082), a movable box (5083), a rack (5084), a gear disk (5085), and a cleaning brush (5086). The guide rod (5081) and the lead screw (5082) are arranged horizontally and parallel to each other. The two ends of the lead screw (5082) are rotatably connected to the inner walls of the front and rear ends of the main body (501). The output shaft of the motor (509) is fixedly connected to one end of the lead screw (5082). The movable box (5083) has a sliding hole and a threaded hole, and the sliding hole is slidably fitted onto the guide rod (5081). The threaded hole is meshed with the lead screw (5082). A gear disk (5085) is provided at the bottom of the movable box (5083). The central shaft of the gear disk (5085) is rotatably connected to the bottom surface of the movable box (5083). A cleaning brush (5086) is connected to the bottom of the gear disk (5085) through a rotating shaft. A rack (5084) is provided on one side of the gear disk (5085). The two ends of the rack (5084) are fixedly connected to the inner walls of the front and rear ends of the main body (501). The gear teeth of the gear disk (5085) mesh with the rack teeth of the rack (5084).

7. The environmentally friendly flue gas conversion device with heat recovery function as described in claim 1, characterized in that: The input ends of the first water pump (7) and the second water pump (9) are both connected to an external water source through pipes.

8. The environmentally friendly flue gas conversion device with heat recovery function as described in claim 1, characterized in that: The main flue (2) is provided with a rotating shaft (12) inside, and a rotating blade (13) is provided on the outside of the rotating shaft (12).

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