Efficient flue gas heat exchanger and heat exchange method thereof

Abstract

The invention discloses an efficient flue gas heat exchanger and a heat exchange method thereof, and relates to the technical field of flue gas heat exchangers. The efficient flue gas heat exchanger comprises a shell, a gas inlet pipe is fixedly arranged on one side of the shell, a through groove is formed in the shell, a water storage pipe fixedly penetrates through the through groove, and a cleaning device is arranged on the top face of the shell. The cleaning device comprises a fixing shell, a motor is installed in the fixing shell, a rotating shaft is fixedly arranged at the output end of the motor, the rotating shaft is rotationally arranged in the shell, a rotating disc is fixedly arranged at the end, away from the motor, of the rotating shaft, and a guide rod is fixedly arranged on the bottom face of the rotating disc. And the cleaning plate is internally provided with an opening matched with the water storage pipe, so that when dust and impurities contained in the flue gas are attached to the surface of the water storage pipe, the dust and impurities on the outer surface of the water storage pipe can be cleaned through the cleaning plate, and therefore, water can be efficiently heated during subsequent heat exchange.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas heat exchangers, and particularly to an efficient flue gas heat exchanger and a heat exchange method thereof. Background Art

[0002] A flue gas heat exchanger is a device that can recover the heat energy in industrial flue gas, improve energy efficiency and reduce costs. Its working principle is to transfer the heat energy of the flue gas to other fluids (usually water or air), and then utilize the recovered heat energy. The flue gas heat exchanger is installed in the flue gas discharge pipe of the combustion equipment, and heat transfer is carried out through the heat exchange surface, so that the heat transfer medium is heated, while the flue gas is cooled and discharged into the atmosphere.

[0003] However, during the use of the existing flue gas heat exchangers, since the flue gas usually contains dust impurities, etc., during the transportation of the flue gas, over a long time, the dust impurities in the flue gas will adhere to the outer surface of the water storage pipe, forming a layer of dirt, which is not convenient for cleaning the outer surface of the water storage pipe. This will result in a reduction in the heating efficiency of the water during heat exchange, and after the heat exchange and utilization of the heat in the flue gas are completed, it is generally directly discharged into the air, making it not meet the emission standards and causing environmental pollution. In view of the above problems, the inventor proposes an efficient flue gas heat exchanger and a heat exchange method thereof to solve the above problems. Summary of the Invention

[0004] In order to solve the problem that since the flue gas usually contains dust impurities, etc., during the transportation of the flue gas, over a long time, the dust impurities in the flue gas will adhere to the outer surface of the water storage pipe, forming a layer of dirt, which is not convenient for cleaning the outer surface of the water storage pipe. This will result in a reduction in the heating efficiency of the water during heat exchange; the purpose of the present invention is to provide an efficient flue gas heat exchanger and a heat exchange method thereof.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: An efficient flue gas heat exchanger includes a housing. One side of the housing is fixedly provided with an intake pipe. A through groove is opened in the housing, and a water storage pipe is fixedly penetrated in the through groove. A cleaning device is provided on the top surface of the housing. The cleaning device includes a fixed housing. A motor is installed in the fixed housing. The output end of the motor is fixedly provided with a rotating shaft. The rotating shaft is rotatably arranged in the housing. One end of the rotating shaft away from the motor is fixedly provided with a turntable. The bottom surface of the turntable is fixedly provided with a guide rod. An outer surface of the guide rod is rotatably sleeved with a connecting rod. A cleaning plate is slidably arranged in the housing. The cleaning plate is slidably sleeved on the outer surface of the water storage pipe. A guide groove is opened in the cleaning plate. An auxiliary rod is slidably arranged in the guide groove. One end of the connecting rod away from the guide rod is rotatably sleeved on the outer surface of the auxiliary rod. Symmetric fixing blocks are provided on the top surface of the cleaning plate. The top surfaces of both fixing blocks are fixedly provided with sliders. A chute is opened in the housing. The sliders are slidably arranged in the chute. First, by connecting the intake pipe with a conveying pipe, the conveying pipe conveys flue gas into the housing. By connecting an external water pipe with the water inlet, water can be added into the intake pipe. The number of the provided water storage pipes is four groups. Then the intake pipe conveys water into the four groups of water storage pipes. Thus, when conveying flue gas, heat exchange can be carried out on the water in the four groups of water storage pipes. Then, by connecting an external pipeline with the water outlet, the heated water after heat exchange can be conveyed to the outlet pipe and then conveyed out from the water outlet. Thus, heat in the flue gas can be exchanged; By starting the motor, the rotating shaft drives the turntable to rotate, and the connecting rod rotates on the outer surface of the guide rod. At the same time, the connecting rod can drive the auxiliary rod to slide in the guide groove and drive the cleaning plate to slide on the outer surface of the water storage pipe. An opening adapted to the water storage pipe is opened in the cleaning plate. Thus, when dust and impurities in the flue gas adhere to the surface of the water storage pipe, the cleaning plate can clean the dust and impurities on the outer surface of the water storage pipe. Thus, water can be heated efficiently. A discharge port is opened in the housing, and a fixed frame is fixedly arranged below the discharge port. After the cleaning plate scrapes the dust and impurities on the surface of the water storage pipe, they can fall above the two inclined plates. Through the inclined surfaces of the inclined plates, they can fall into the collection frame from the discharge port. Thus, the dust can be collected and can be centrally processed. When cleaning the dust on the surface of the water storage pipe, the pull-out plate is pulled out of the card slot. Thus, the dust and impurities can fall into the collection box. When conveying flue gas for heat exchange, the pull-out plate is inserted into the card slot. Thus, heat is stored in the housing and is prevented from being discharged from the lower fixed frame, improving the heat exchange efficiency; An air outlet is provided in the shell body, and the air is interconnected with the exhaust pipe. A belt is connected between the driving wheel and the driven wheel. Therefore, after the flue gas heat exchange is completed, while the dust and impurities on the surface of the water storage pipe are cleaned, the rotating shaft and the rotating rod rotate synchronously, so that the fan blades can rotate and the flue gas in the shell body can be extracted and discharged from the exhaust pipe. Through the filter plate, when the flue gas is discharged, the excess dust and impurities in the flue gas are filtered through the filter plate, and then the flue gas is purified through the activated carbon plate so that it can meet the emission standards and avoid pollution to the environment. By pulling the pull rod, the fixed ring slides in the movable groove and the spring is squeezed, so that one end of the pull rod can be separated from the exhaust pipe, so that the mounting frame can be disassembled, the activated carbon plate can be replaced, and the dust and impurities on the surface of the filter plate can be cleaned.

[0006] Preferably, an exhaust device is provided on the top surface of the shell, and the exhaust device includes an exhaust pipe, a positioning plate is fixedly provided in the exhaust pipe, a rotating rod is rotatably provided on the bottom surface of the positioning plate, an exhaust fan blade is fixedly provided on the bottom end of the rotating rod, a driving wheel is fixedly provided on the outer surface of the rotating shaft, a driven wheel is fixedly provided on the outer surface of the rotating rod, a belt is transmittedly connected between the driving wheel and the driven wheel, one end of the exhaust pipe is detachably provided with a mounting frame, an activated carbon plate is placed in the mounting frame, a filter plate is provided on the top surface of the activated carbon plate, and the filter plate is fitted on the bottom end of the exhaust pipe, a pull rod is movably inserted in the mounting frame, the pull rod is movably inserted in the exhaust pipe, a movable groove is opened in the mounting frame, a fixing ring is fixedly provided on the outer surface of the pull rod, the fixing ring is slidably arranged in the movable groove, and a spring is fixedly connected between the fixing ring and the movable groove.

[0007] Preferably, a first fixing plate is fixedly provided on one side of the shell, a water inlet pipe is fixedly provided in the first fixing plate, a water inlet is fixedly provided on the outer surface of the water inlet pipe, one end of the water storage pipe is fixedly connected to the water inlet pipe, and the water storage pipe and the water inlet pipe are interconnected; a second fixing plate is fixedly provided on one side of the shell, a water outlet pipe is fixedly provided in the second fixing plate, a water outlet is fixedly provided on the outer surface of the water outlet pipe, one end of the water storage pipe away from the water inlet pipe is fixedly connected to the water outlet pipe, and the water storage pipe and the water outlet pipe are interconnected.

[0008] Preferably, a collecting device is fixedly provided on the bottom surface of the shell, and the collecting device comprises a fixed frame, in which a collecting frame is slidably provided, a slot is opened in the shell, in which a pull-out plate is slidably provided, and an inclined plate is fixedly provided in the shell.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the cleaning plate slides inside the housing. An opening adapted to the water storage pipe is provided in the cleaning plate. When dust and impurities in the flue gas adhere to the surface of the water storage pipe, the cleaning plate can clean the dust and impurities on the outer surface of the water storage pipe, so that when heat exchange is carried out subsequently, the water can be heated efficiently. 2. In the present invention, the fan blades of the exhaust fan rotate inside the exhaust pipe. After the heat exchange of the flue gas is completed, the flue gas inside the housing is exhausted, so that the flue gas can be discharged. The excess dust and impurities in the flue gas are filtered by the filter plate, and then the flue gas is purified by the activated carbon plate, so that it can meet the emission standards and avoid polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of a partial sectional structure of the housing of the present invention; Figure 3 It is a schematic diagram of a disassembled structure of the present invention; Figure 4 It is a schematic diagram of the cleaning device structure of the present invention; Figure 5 It is a schematic diagram of the exhaust device structure of the present invention; Figure 6 For the present invention Figure 4 The enlarged schematic diagram at position A in; Figure 7 For the present invention Figure 5 The enlarged schematic diagram at position B in; Figure 8 For the present invention Figure 5 The enlarged schematic diagram at position C in.

[0012] In the figure: 1. Housing; 2. Cleaning device; 3. Exhaust device; 4. Collection device; 101. Inlet pipe; 102. First fixing plate; 103. Second fixing plate; 104. Water inlet pipe; 105. Water inlet; 106. Water storage pipe; 107. Outlet pipe; 108. Water outlet; 109. Inclined plate; 110. Through groove; 111. Slide groove; 112. Card slot; 201. Fixed housing; 202. Motor; 203. Rotating shaft; 204. Driving wheel; 205. Belt; 206. Turntable; 207. Guide rod; 208. Connecting rod; 209. Auxiliary rod; 210. Cleaning plate; 211. Guide groove; 212. Fixed block; 213. Slide block; 301. Exhaust pipe; 302. Positioning plate; 303. Rotating rod; 304. Driven wheel; 305. Exhaust fan blade; 306. Mounting frame; 307. Filter plate; 308. Activated carbon plate; 309. Movable groove; 310. Pull rod; 311. Fixed ring; 312. Spring; 401. Fixed frame; 402. Collection frame; 403. Drawer plate. Detailed implementation manner

[0013] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0014] Embodiment: As Figures 1-8As shown in the figure, the present invention provides an efficient flue gas heat exchanger, which includes a housing 1. One side of the housing 1 is fixedly provided with an intake pipe 101. A through groove 110 is opened in the housing 1, and a water storage pipe 106 is fixedly penetrated in the through groove 110. A cleaning device 2 is provided on the top surface of the housing 1. The cleaning device 2 includes a fixed housing 201. A motor 202 is installed in the fixed housing 201. The output end of the motor 202 is fixedly provided with a rotating shaft 203. The rotating shaft 203 is rotatably arranged in the housing 1. One end of the rotating shaft 203 away from the motor 202 is fixedly provided with a turntable 206. A guide rod 207 is fixedly provided on the bottom surface of the turntable 206. A connecting rod 208 is rotatably sleeved on the outer surface of the guide rod 207. A cleaning plate 210 is slidably arranged in the housing 1. The cleaning plate 210 is slidably sleeved on the outer surface of the water storage pipe 106. A guide groove 211 is opened in the cleaning plate 210. An auxiliary rod 209 is slidably arranged in the guide groove 211. One end of the connecting rod 208 away from the guide rod 207 is rotatably sleeved on the outer surface of the auxiliary rod 209. By starting the motor 202, the rotating shaft 203 drives the turntable 206 to rotate, and the connecting rod 208 rotates on the outer surface of the guide rod 207. At the same time, the connecting rod 208 can drive the auxiliary rod 209 to slide in the guide groove 211 and drive the cleaning plate 210 to slide on the outer surface of the water storage pipe 106. An opening adapted to the water storage pipe 106 is opened in the cleaning plate 210. When dust and impurities in the flue gas adhere to the surface of the water storage pipe 106, the cleaning plate 210 can clean the dust and impurities on the outer surface of the water storage pipe 106, and then the water can be heated efficiently.

[0015] An exhaust device 3 is provided on the top surface of the housing 1. The exhaust device 3 includes an exhaust pipe 301. A positioning plate 302 is fixedly provided in the exhaust pipe 301. A rotating rod 303 is rotatably arranged on the bottom surface of the positioning plate 302. The bottom end of the rotating rod 303 is fixedly provided with a blower fan blade 305. A driving wheel 204 is fixedly sleeved on the outer surface of the rotating shaft 203. A driven wheel 304 is fixedly sleeved on the outer surface of the rotating rod 303. A belt 205 is connected between the driving wheel 204 and the driven wheel 304.

[0016] By adopting the above technical solution, an air outlet is opened in the housing 1 and is communicated with the exhaust pipe 301. By providing a belt 205 connected between the driving wheel 204 and the driven wheel 304, after the flue gas heat exchange is completed, while cleaning the dust and impurities on the surface of the water storage pipe 106, the rotating shaft 203 and the rotating rod 303 rotate synchronously, and then the blower fan blade 305 can be rotated to extract the flue gas in the housing 1 and discharge it from the exhaust pipe 301.

[0017] Fixed blocks 212 are symmetrically arranged on the top surface of the cleaning plate 210. Sliders 213 are fixedly provided on the top surfaces of the two fixed blocks 212. A sliding groove 111 is opened in the housing 1. The sliders 213 are slidably arranged in the sliding groove 111.

[0018] By adopting the above technical solution, when the cleaning plate 210 slides, it can drive the fixed block 212 and the forehead slider 213 to slide in the chute 111, and thus can play an auxiliary sliding role for the cleaning plate 210.

[0019] One side of the housing 1 is fixedly provided with a first fixing plate 102. An inlet pipe 104 is fixedly arranged inside the first fixing plate 102. An inlet 105 is fixedly arranged on the outer surface of the inlet pipe 104. One end of a water storage pipe 106 is fixedly connected to the inlet pipe 104, and the water storage pipe 106 communicates with the inlet pipe 104. One side of the housing 1 is fixedly provided with a second fixing plate 103. An outlet pipe 107 is fixedly arranged inside the second fixing plate 103. An outlet 108 is fixedly arranged on the outer surface of the outlet pipe 107. The end of the water storage pipe 106 far from the inlet pipe 104 is fixedly connected to the outlet pipe 107, and the water storage pipe 106 communicates with the outlet pipe 107.

[0020] By adopting the above technical solution, by connecting an external water pipe to the inlet 105, water can be added into the inlet pipe 104. The number of the provided water storage pipes 106 is four groups. Then the inlet pipe 104 conveys water into the four groups of water storage pipes 106. Thus, when conveying flue gas, heat exchange can be carried out on the water in the four groups of water storage pipes 106. Then, by connecting an external pipeline to the outlet 108, the heated water after heat exchange can be conveyed to the outlet pipe 107 and then conveyed out from the outlet 108. Therefore, heat exchange can be carried out on the heat in the flue gas.

[0021] One end of an exhaust pipe 301 is detachably provided with a mounting bracket 306. An activated carbon plate 308 is placed inside the mounting bracket 306. A filter plate 307 is arranged on the top surface of the activated carbon plate 308. The filter plate 307 is fitted to the bottom end of the exhaust pipe 301. A pull rod 310 is movably inserted into the mounting bracket 306. The pull rod 310 is movably inserted into the exhaust pipe 301. An activity groove 309 is formed in the mounting bracket 306. A fixing ring 311 is fixedly arranged on the outer surface of the pull rod 310. The fixing ring 311 slides in the activity groove 309. A spring 312 is fixedly connected between the fixing ring 311 and the activity groove 309.

[0022] By adopting the above technical solution, through the provided filter plate 307, when discharging flue gas, the excess dust and impurities in the flue gas are filtered by the filter plate 307. Then, the flue gas is purified by the activated carbon plate 308 so that it can meet the emission standard and avoid polluting the environment. By pulling the pull rod 310, the fixing ring 311 slides in the activity groove 309 and compresses the spring 312. Thus, one end of the pull rod 310 can be disengaged from the exhaust pipe 301. Therefore, the mounting bracket 306 can be disassembled to replace the activated carbon plate 308 and clean the dust and impurities on the surface of the filter plate 307.

[0023] The bottom surface of the housing 1 is fixedly provided with a collection device 4. The collection device 4 includes a fixed frame 401. A collection frame 402 is slidably arranged in the fixed frame 401. A card slot 112 is formed in the housing 1. A draw plate 403 is slidably arranged in the card slot 112. An inclined plate 109 is fixedly arranged in the housing 1.

[0024] By adopting the above technical solution, a discharge port is formed in the housing 1, and the fixed frame 401 is fixedly arranged below the discharge port. After the cleaning plate 310 scrapes the dust and impurities on the surface of the water storage pipe 106, they can fall above the two inclined plates 109. Through the inclined surface of the inclined plate 109, they can fall into the collection frame 402 from the discharge port, so that the dust can be collected and then centrally processed. When cleaning the dust on the surface of the water storage pipe 106, the draw plate 403 is pulled out of the card slot 112, so that the dust and impurities can fall into the collection box 402. When conveying the flue gas for heat exchange, the draw plate 403 is inserted into the card slot 102, so that the heat is stored in the housing 1 and prevented from being discharged from the lower fixed frame 401, improving the heat exchange efficiency.

[0025] Working principle: First, the intake pipe 101 is connected to the conveying pipe, and the conveying pipe conveys the flue gas into the housing 1. The external water pipe is connected to the water inlet 105, so that water can be added into the water inlet pipe 104. The number of the arranged water storage pipes 106 is four groups. Then the water inlet pipe 104 conveys the water into the four groups of water storage pipes 106. When conveying the flue gas, the water in the four groups of water storage pipes 106 can be heat-exchanged. Then, it is connected to the water outlet 108 through an external pipeline, so that the heat-exchanged hot water can be conveyed to the water outlet pipe 107 and then conveyed from the water outlet 108, so that the heat in the flue gas can be heat-exchanged. After heat exchange is completed, by turning on the motor 202, the rotating shaft 203 drives the turntable 206 to rotate, and the connecting rod 208 rotates on the outer surface of the guide rod 207. At the same time, the connecting rod 208 can drive the auxiliary rod 209 to slide in the guide groove 211 and drive the cleaning plate 210 to slide on the outer surface of the water storage pipe 106. An opening adapted to the water storage pipe 106 is provided in the cleaning plate 210. When dust and impurities in the flue gas adhere to the surface of the water storage pipe 106, the cleaning plate 210 can clean the dust and impurities on the outer surface of the water storage pipe 106, thereby efficiently heating the water. An outlet is provided in the housing 1, and the fixed frame 401 is fixedly arranged below the outlet. After the cleaning plate 310 scrapes the dust and impurities on the surface of the water storage pipe 106, it can fall above the two inclined plates 109, and through the inclined surface of the inclined plate 109, it can fall into the collection box 402 from the outlet, thereby collecting the dust and enabling centralized treatment. When cleaning the dust on the surface of the water storage pipe 106, the pull-out plate 403 is pulled out of the card slot 112, so that the dust and impurities can fall into the collection box 402. When transporting the flue gas for heat exchange, the pull-out plate 403 is inserted into the card slot 102, so that the heat is stored in the housing 1 and prevented from being discharged from the lower fixed frame 401, improving the heat exchange efficiency; An air outlet is provided in the housing 1 and is in communication with the exhaust pipe 301. A belt 205 is connected between the driving wheel 204 and the driven wheel 304. After the heat exchange of the flue gas is completed, while cleaning the dust and impurities on the surface of the water storage pipe 106, the rotating shaft 203 and the rotating rod 303 rotate synchronously, so that the exhaust fan blade 305 can rotate and extract the flue gas in the housing 1, which can be discharged from the exhaust pipe 301. Through the filter plate 307 provided, when the flue gas is discharged, the filter plate 307 filters the excess dust and impurities in the flue gas, and then the activated carbon plate 308 purifies the flue gas so that it can meet the emission standards and avoid polluting the environment. By pulling the pull rod 310, the fixed ring 311 slides in the movable groove 309 and compresses the spring 312, so that one end of the pull rod 310 can be disengaged from the exhaust pipe 301, and then the mounting frame 306 can be disassembled to replace the activated carbon plate 308 and clean the dust and impurities on the surface of the filter plate 307.

[0026] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. An efficient flue gas heat exchanger, comprising a housing (1), characterized in that: One side of the housing (1) is fixedly provided with an air inlet pipe (101). A through groove (110) is formed in the housing (1). A water storage pipe (106) is fixedly penetrated in the through groove (110). A cleaning device (2) is arranged on the top surface of the housing (1). The cleaning device (2) includes a fixed housing (201). A motor (202) is installed in the fixed housing (201). A rotating shaft (203) is fixedly provided at the output end of the motor (202). The rotating shaft (203) is rotatably arranged in the housing (1). A turntable (206) is fixedly provided at one end of the rotating shaft (203) away from the motor (202). A guide rod (207) is fixedly provided on the bottom surface of the turntable (206). A connecting rod (208) is rotatably sleeved on the outer surface of the guide rod (207). A cleaning plate (210) is slidably arranged in the housing (1). The cleaning plate (210) is slidably sleeved on the outer surface of the water storage pipe (106). A guide groove (211) is formed in the cleaning plate (210). An auxiliary rod (209) is slidably arranged in the guide groove (211). One end of the connecting rod (208) away from the guide rod (207) is rotatably sleeved on the outer surface of the auxiliary rod (209).

2. The high-efficiency flue gas heat exchanger according to claim 1, wherein An exhaust device (3) is arranged on the top surface of the housing (1). The exhaust device (3) includes an exhaust pipe (301). A positioning plate (302) is fixedly provided in the exhaust pipe (301). A rotating rod (303) is rotatably arranged on the bottom surface of the positioning plate (302). A suction fan blade (305) is fixedly provided at the bottom end of the rotating rod (303).

3. The high-efficiency flue gas heat exchanger according to claim 2, characterized in that, A driving wheel (204) is fixedly sleeved on the outer surface of the rotating shaft (203). A driven wheel (304) is fixedly sleeved on the outer surface of the rotating rod (303). A belt (205) is connected in a transmission manner between the driving wheel (204) and the driven wheel (304).

4. An efficient flue gas heat exchanger according to claim 1, characterized in that, Fixing blocks (212) are symmetrically arranged on the top surface of the cleaning plate (210). Sliders (213) are fixedly provided on the top surfaces of the two fixing blocks (212). A sliding groove (111) is formed in the housing (1). The sliders (213) are slidably arranged in the sliding groove (111).

5. An efficient flue gas heat exchanger according to claim 1, characterized in that, One side of the housing (1) is fixedly provided with a first fixing plate (102). A water inlet pipe (104) is fixedly provided in the first fixing plate (102). A water inlet (105) is fixedly provided on the outer surface of the water inlet pipe (104). One end of the water storage pipe (106) is fixedly connected to the water inlet pipe (104), and the water storage pipe (106) is communicated with the water inlet pipe (104).

6. The high-efficiency flue gas heat exchanger according to claim 5, wherein, One side of the housing (1) is fixedly provided with a second fixing plate (103). A water outlet pipe (107) is fixedly provided in the second fixing plate (103). A water outlet (108) is fixedly provided on the outer surface of the water outlet pipe (107). One end of the water storage pipe (106) away from the water inlet pipe (104) is fixedly connected to the water outlet pipe (107), and the water storage pipe (106) is communicated with the water outlet pipe (107).

7. The high-efficiency flue gas heat exchanger according to claim 2, wherein One end of the exhaust pipe (301) is detachably provided with a mounting bracket (306). An activated carbon plate (308) is placed inside the mounting bracket (306). A filter plate (307) is provided on the top surface of the activated carbon plate (308). The filter plate (307) is fitted to the bottom end of the exhaust pipe (301).

8. An efficient flue gas heat exchanger according to claim 7, characterized in that, A pull rod (310) is movably inserted into the mounting bracket (306). The pull rod (310) is movably inserted into the exhaust pipe (301). An activity groove (309) is formed inside the mounting bracket (306). A fixing ring (311) is fixedly provided on the outer surface of the pull rod (310). The fixing ring (311) is slidably arranged in the activity groove (309). A spring (312) is fixedly connected between the fixing ring (311) and the activity groove (309).

9. The high-efficiency flue gas heat exchanger according to claim 1, wherein A collection device (4) is fixedly provided on the bottom surface of the housing (1). The collection device (4) includes a fixing frame (401). A collection frame (402) is slidably arranged inside the fixing frame (401). A card slot (112) is formed inside the housing (1). A pull plate (403) is slidably arranged in the card slot (112). An inclined plate (109) is fixedly provided inside the housing (1).

10. A heat exchange method for the high-efficiency flue gas heat exchanger according to any one of claims 1-9, characterized in that, It includes the following steps: S1. First, connect the intake pipe (101) with the delivery pipe, and the delivery pipe conveys the flue gas into the housing (1). S2. Connect an external water pipe to the water inlet (105) so as to add water into the intake pipe (104). The number of the water storage pipes (106) is four groups. Then the intake pipe (104) conveys the water into the four groups of water storage pipes (106). Further, when conveying the flue gas, heat exchange can be carried out on the water in the four groups of water storage pipes (106). Then connect an external pipeline to the water outlet (108) so that the heated water after heat exchange can be conveyed from the water outlet (108), and further heat exchange can be carried out on the heat in the flue gas. S3. After the heat exchange is completed, start the motor (202) so that the rotating shaft (203) drives the turntable (206) to rotate, and the connecting rod (208) rotates on the outer surface of the guide rod (207). At the same time, the connecting rod (208) can drive the auxiliary rod (209) to slide in the guide groove (211), and drive the cleaning plate (210) to slide on the outer surface of the water storage pipe (106). An opening adapted to the water storage pipe (106) is formed in the cleaning plate (210). Further, when dust impurities in the flue gas adhere to the surface of the water storage pipe (106), the cleaning plate (210) can clean the dust impurities on the outer surface of the water storage pipe (106), and further the water can be heated efficiently. S4. A discharge port is formed inside the housing (1), and the fixing frame (401) is fixedly arranged below the discharge port. After the cleaning plate (310) scrapes the dust impurities on the surface of the water storage pipe (106), it can fall into the collection frame (402) from the discharge port through the inclined surface of the inclined plate (109), and further the dust can be collected so as to be centrally processed. S5, a belt (205) is provided between the driving wheel (204) and the driven wheel (304), so that after the smoke heat exchange is completed, while the dust and impurities on the surface of the water storage pipe (106) are cleaned, the rotating shaft (203) and the rotating rod (303) rotate synchronously, thereby enabling the exhaust fan blades (305) to rotate and exhaust the smoke in the housing (1) to be discharged from the exhaust pipe (301); S6. When the smoke is discharged, the filter plate (307) is provided to filter out excess dust and impurities in the smoke, and then the activated carbon plate (308) is used to purify the smoke so that it meets the emission standards and avoids pollution to the environment; S7. By pulling the pull rod (310), the fixing ring (311) slides in the movable groove (309) and squeezes the spring (312), so that one end of the pull rod (310) can be separated from the exhaust pipe (301), and then the mounting frame (306) can be disassembled, the activated carbon plate (308) can be replaced, and the dust and impurities on the surface of the filter plate (307) can be cleaned.

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