Efficient flue gas waste heat exchanger

Abstract

The invention relates to the technical field of flue gas waste heat, and discloses an efficient flue gas waste heat exchanger which comprises two supporting plates, a heat exchange box is fixedly installed at the tops of the two supporting plates, two air inlet pipes are fixedly installed at the top of the heat exchange box, a plurality of heat exchange pipes are fixedly installed in the heat exchange box, and the efficient flue gas waste heat exchanger further comprises a water removal mechanism and a water supply mechanism, and the water removal mechanism comprises rotating sleeves fixedly arranged on the multiple heat exchange pipes in a sleeving mode, fins are fixedly installed on the multiple rotating sleeves correspondingly, an n-shaped air inlet groove is formed in the heat exchange box, and two first sliding grooves are formed in the heat exchange box. In the heating process, water films condensed by water vapor can be generated on the fins, centrifugal force can throw away the water films on the fins in the continuous rotating process of the fins, the water films fall into the water storage inclined grooves, the situation that normal heat absorption of the fins is affected by the water films is avoided, and therefore it is guaranteed that smoke can stably transfer heat, and loss of heat energy is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas waste heat utilization equipment, and particularly to a high-efficiency flue gas waste heat exchanger. Background Technique

[0002] It is a device specifically used to recover the waste heat carried by flue gas in industrial production or other processes. It usually consists of key components such as heat exchange tubes and fins. The heat exchange tubes are made of special materials, with good thermal conductivity and corrosion resistance, and can transfer heat efficiently. The fins are tightly connected to the heat exchange tubes, and their unique structural design greatly increases the contact area with the flue gas, effectively strengthening the heat exchange process.

[0003] After the flue gas contacts the fins, a water film will be generated on the fins due to the temperature difference. If the water film on the fin surface is too thick, water droplets or water flows will be formed between the fins, blocking some of the air flow channels, reducing the air flow rate, thereby reducing the contact area and contact time between the air and the fins, and seriously affecting the heat transfer efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-efficiency flue gas waste heat exchanger to solve the problem that if the water film on the fin surface is too thick, water droplets or water flows will be formed between the fins, blocking some of the air flow channels, reducing the air flow rate, thereby reducing the contact area and contact time between the air and the fins, and seriously affecting the heat transfer efficiency.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention is a high-efficiency flue gas waste heat exchanger, including two support plates. A heat exchange box is fixedly installed on the top of the two support plates. Two air inlet pipes are fixedly installed on the top of the heat exchange box. A number of heat exchange tubes are fixedly installed in the heat exchange box, and further includes: A water removal mechanism. The water removal mechanism includes a rotating sleeve fixedly sleeved on a number of heat exchange tubes. Fins are respectively fixedly installed on a number of the rotating sleeves. A U-shaped air inlet groove is opened in the heat exchange box. Two sliding grooves one are opened in the heat exchange box. The two sliding grooves one are respectively communicated with the U-shaped air inlet groove and the inside of the heat exchange box. A number of water removal springs one are respectively fixedly installed on the inner walls of the two sliding grooves one away from each other. One ends of the number of water removal springs one close to each other are respectively fixedly installed with trapezoidal plates one. One sides of the number of trapezoidal plates one close to each other are in contact.

[0006] Furthermore, a sliding groove two is opened on the heat exchange box. The sliding groove two is communicated with the U-shaped air inlet groove and the inside of the heat exchange box. A number of water removal springs two are respectively fixedly installed on the inner walls of the two sliding grooves two away from each other. One ends of the number of water removal springs two close to each other are respectively fixedly installed with trapezoidal plates two. One sides of the two trapezoidal plates two close to each other are in contact.

[0007] Further, a sealing mechanism is provided at the bottom of the heat exchange box. The sealing mechanism includes a water storage inclined groove formed on the inner wall sleeve at the bottom of the heat exchange box. A sealing groove is formed in the heat exchange box. A plurality of sealing springs are fixedly installed on the back inner wall of the sealing groove. The front ends of the plurality of sealing springs are fixedly installed with a sealing plate.

[0008] Further, C-shaped mounting plates are fixedly installed at the bottoms of the two support plates. Circular air boxes are respectively fixedly installed on the right side and the left side of the C-shaped mounting plate. Rotating rods are respectively rotatably installed on the inner walls of the two circular air boxes close to each other. One ends of the two rotating rods away from each other respectively extend outside the two circular air boxes. A plurality of transmission fan blades are respectively fixedly installed on the two rotating rods.

[0009] Further, a plurality of transmission rods are respectively fixedly installed on the two rotating rods. Rectangular sliding grooves are respectively formed on the right side and the left side of the heat exchange box. Special-shaped rods are respectively fixedly installed on the right side and the left side of the sealing plate. The two special-shaped rods respectively penetrate through the two rectangular sliding grooves and are respectively slidably connected with the two rectangular sliding grooves.

[0010] Further, two arc-shaped plates are fixedly installed on the bottom inner wall of the heat exchange box. A plurality of filter grooves are respectively formed on the two arc-shaped plates. Air inlet grooves are respectively formed on the left inner wall and the right inner wall of the heat exchange box. The two air inlet grooves are respectively communicated with the two circular air boxes.

[0011] Further, dust-proof mechanisms are respectively arranged in the two circular air boxes. The dust-proof mechanism includes a fixed plate with a groove fixedly installed in the circular air box. The rotating rod penetrates through the fixed plate with a groove and is rotatably connected with the fixed plate with a groove. A T-shaped hollow block is slidably installed in the circular air box. The left side of the T-shaped hollow block extends outside the circular air box.

[0012] Further, a limiting spring is fixedly installed on the left side of the fixed plate with a groove. The left end of the limiting spring is fixedly connected with the left inner wall of the T-shaped hollow block. A plurality of exhaust holes are formed in the outer wall of the T-shaped hollow block.

[0013] The present invention has the following beneficial effects: (1)An efficient flue gas waste heat exchanger of the present invention discharges the waste heat flue gas into the heat exchange box through the air inlet pipe. The flue gas will enter the U-shaped air inlet groove on the heat exchange box. As more and more gas enters the U-shaped air inlet groove, the air pressure in the U-shaped air inlet groove will increase. At this time, the flue gas will push the two trapezoidal plates II apart, and the corresponding water removal spring I will undergo compressive deformation. The gas will also push the two trapezoidal plates I away from each other, and the corresponding water removal spring II will undergo compressive deformation. At this time, the flue gas will blow into the heat exchange box from the right inner wall, the right inner wall and the top inner wall of the heat exchange box at the same time. Under the elastic force of the water removal spring I and the water removal spring II, the wind speed of the flue gas when discharging will be increased. The flue gas blows all around towards a number of fins on a number of heat exchange tubes. At this time, the fins will rotate under the blowing of the flue gas. During the rotation of the fins, the flue gas that has contacted the fins in the heat exchange box will be disturbed. At this time, the flue gas will fill every corner of the heat exchange box, facilitating the fins to absorb heat more comprehensively and evenly. The heat absorbed by the fins will be transferred to the heat exchange tubes through the rotating sleeve, and then heat the water in the heat exchange tubes. During the heating process, a water film condensed from water vapor will be generated on the fins. During the continuous rotation of the fins, the centrifugal force will throw off the water film on the fins and fall into the water storage inclined groove, avoiding the water film from affecting the normal heat absorption of the fins, so as to ensure that the flue gas can stably transfer heat and reduce the loss of heat energy; (2)An efficient flue gas waste heat exchanger of the present invention. As more and more gas enters the heat exchange box, the air pressure in the heat exchange box will increase synchronously. The flue gas will enter the circular air box along the air inlet groove. When the flue gas passes through a number of transmission fan blades, it will drive a number of transmission fan blades to rotate. The transmission fan blades will drive the rotating rod to rotate, and the rotating rod will drive the special-shaped rod to rotate. During the rotation of the special-shaped rod, it will contact the transmission rod. At this time, the transmission rod will move away from the circular air box. The special-shaped rod will drive the sealing plate to move away from the circular air box. At this time, the sealing spring will undergo tensile deformation. As the transmission rod rotates continuously, at this time, the sealing plate will close the sealing groove to ensure the sealing of the heat exchange box and prevent the flue gas from leaking and affecting the heat transfer effect of the flue gas; (3)An efficient flue gas waste heat exchanger of the present invention. The flue gas entering the circular air box will enter the T-shaped hollow block through the fixed plate with grooves. At this time, the air pressure in the T-shaped hollow block will increase. The flue gas will push the T-shaped hollow block to move away from the heat exchange box. At this time, the limit spring will undergo tensile deformation. When a number of exhaust holes on the T-shaped hollow block leave the circular air box, the flue gas will be discharged from the exhaust holes for pressure relief. When the input of flue gas into the heat exchange box stops, the corresponding T-shaped hollow block will be reset under the elastic force of the limit spring. At this time, the exhaust holes will enter the circular air box again, effectively preventing dust from entering the device when the device is not in use, resulting in dust adhering to the transmission fan blades and unable to rotate smoothly; (4) In the high-efficiency flue gas waste heat exchanger of the present invention, when the flue gas input stops, the driving rod no longer rotates, and the sealing plate moves in the direction of the circular bellows under the elastic force of the sealing spring, and the sealing groove opens. At this time, the water in the water storage chute is discharged out of the device through the sealing groove, and the heat exchange tubes and fins in the heat exchange box can also be cleaned, so as to keep the device clean and prevent scale impurities from remaining in the heat exchange box and affecting the normal use of the heat exchange box.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the structure of the heat exchange tube of the present invention; Figure 4 For the present invention Figure 2 A is a schematic diagram of the enlarged structure of the middle part; Figure 5 It is a partial cross-sectional structural schematic diagram of the heat exchange box of the present invention; Figure 6 For the present invention Figure 2 Schematic diagram of the enlarged structure of B; Figure 7 It is a schematic diagram of the cross-sectional structure of the side of the heat exchange box of the present invention; Figure 8 For the present invention Figure 5 Schematic diagram of the enlarged structure of C in the figure.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1, support plate; 2, heat exchange box; 3, air inlet pipe; 4, heat exchange tube; 5, water removal mechanism; 501, rotating sleeve; 502, fin; 503, U-shaped air inlet groove; 504, first sliding groove; 505, first water removal spring; 506, first trapezoidal plate; 507, second sliding groove; 508, second water removal spring; 509, second trapezoidal plate; 6, sealing mechanism; 601, water storage inclined groove; 602, sealing groove; 603, sealing spring; 604, sealing plate; 606, U-shaped mounting plate; 607, circular air box; 608, rotating rod; 609, driving fan blade; 610, driving rod; 611, special-shaped rod; 612, rectangular sliding groove; 613, arc plate; 614, filter groove; 615, air inlet groove; 7, dust-proof mechanism; 701, fixed plate with groove; 702, T-shaped hollow block; 703, limiting spring; 704, exhaust hole. Detailed implementation mode

[0018] 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.

[0019] Please refer to Figure 1 - Figure 8 As shown, the present invention is an efficient flue gas waste heat exchanger, including two support plates 1. The top of the two support plates 1 is fixedly installed with a heat exchange box 2. The top of the heat exchange box 2 is fixedly installed with two air inlet pipes 3. A number of heat exchange tubes 4 are fixedly installed in the heat exchange box 2. It further includes: A water removal mechanism 5. The water removal mechanism 5 includes a rotating sleeve 501 fixedly sleeved on a number of heat exchange tubes 4. A number of fins 502 are respectively fixedly installed on the number of rotating sleeves 501. A U-shaped air inlet groove 503 is opened in the heat exchange box 2. Two first sliding grooves 504 are opened in the heat exchange box 2. The two first sliding grooves 504 communicate with the U-shaped air inlet groove 503 and the inside of the heat exchange box 2 respectively. A number of first water removal springs 505 are respectively fixedly installed on the inner walls of the two first sliding grooves 504 away from each other. One ends of the number of first water removal springs 505 close to each other are respectively fixedly installed with first trapezoidal plates 506. One sides of the number of first trapezoidal plates 506 close to each other are in contact.

[0020] Such as Figure 4As shown in the figure, a second sliding groove 507 is formed in the heat exchange box 2. The second sliding groove 507 communicates with the U-shaped air inlet groove 503 and the inside of the heat exchange box 2. A plurality of second water removal springs 508 are fixedly installed on the inner walls of the two sides of the second sliding groove 507 away from each other. One ends of the plurality of second water removal springs 508 close to each other are fixedly installed with second trapezoidal plates 509, and the sides of the two second trapezoidal plates 509 close to each other are in contact with each other.

[0021] As more and more gas enters the U-shaped air inlet groove 503, the air pressure in the U-shaped air inlet groove 503 will increase. At this time, the flue gas will push the two second trapezoidal plates 509 apart, and the corresponding first water removal springs 505 will undergo compressive deformation. The gas will also push the two first trapezoidal plates 506 away from each other, and the corresponding second water removal springs 508 will undergo compressive deformation. At this time, the flue gas will blow air into the heat exchange box 2 from the right inner wall, the right inner wall and the top inner wall of the heat exchange box 2 at the same time. Under the elastic force of the first water removal springs 505 and the second water removal springs 508, the wind speed of the flue gas discharged will be increased.

[0022] As Figure 6 As shown in the figure, a sealing mechanism 6 is arranged at the bottom of the heat exchange box 2. The sealing mechanism 6 includes a water storage inclined groove 601 formed on the inner wall sleeve at the bottom of the heat exchange box 2. A sealing groove 602 is formed in the heat exchange box 2. A plurality of sealing springs 603 are fixedly installed on the back inner wall of the sealing groove 602, and a sealing plate 604 is fixedly installed at the front ends of the plurality of sealing springs 603.

[0023] As the transmission rod 610 rotates continuously, at this time, the sealing plate 604 will close the sealing groove 602 to ensure the sealing performance of the heat exchange box 2 and prevent the leakage of flue gas from affecting the heat transfer effect of the flue gas.

[0024] As Figure 6 As shown in the figure, U-shaped mounting plates 606 are fixedly installed at the bottoms of the two support plates 1. Circular air boxes 607 are fixedly installed on the right side and the left side of the U-shaped mounting plate 606 respectively. Rotating rods 608 are rotatably installed on the inner walls of the two sides of the two circular air boxes 607 close to each other. One ends of the two rotating rods 608 away from each other extend outside the two circular air boxes 607, and a plurality of transmission fan blades 609 are fixedly installed on the two rotating rods 608 respectively.

[0025] The flue gas will enter the circular air box 607 along the air inlet groove 615. When the flue gas passes through the plurality of transmission fan blades 609, it will drive the plurality of transmission fan blades 609 to rotate, and the transmission fan blades 609 will drive the rotating rods 608 to rotate.

[0026] As Figure 7As shown, a plurality of transmission rods 610 are fixedly installed on the two rotating rods 608, rectangular slide grooves 612 are respectively opened on the right and left sides of the heat exchange box 2, and special-shaped rods 611 are respectively fixedly installed on the right and left sides of the sealing plate 604, and the two special-shaped rods 611 respectively penetrate the two rectangular slide grooves 612 and are respectively slidably connected with the two rectangular slide grooves 612.

[0027] The rotating rod 608 drives the transmission rod 610 to rotate. The transmission rod 610 contacts the special-shaped rod 611 during the rotation. At this time, the special-shaped rod 611 moves in a direction away from the circular bellows 607 .

[0028] like Figure 6 As shown, two arc plates 613 are fixedly installed on the bottom inner wall of the heat exchange box 2, and a plurality of filter slots 614 are respectively opened on the two arc plates 613. Air inlet slots 615 are respectively opened on the left inner wall and the right inner wall of the heat exchange box 2. The two air inlet slots 615 are respectively communicated with the two circular air boxes 607.

[0029] After passing through a plurality of filter slots 614 , the smoke will enter the circular bellows 607 from the air inlet slot 615 . The arc plate 613 can effectively prevent the water thrown off the fins 502 from entering the circular bellows 607 .

[0030] like Figure 6 As shown, dustproof mechanisms 7 are respectively provided in the two circular bellows 607, and the dustproof mechanisms 7 include grooved fixing plates 701 fixedly installed in the circular bellows 607, and the rotating rod 608 passes through the grooved fixing plates 701 and is rotatably connected to the grooved fixing plates 701, and a T-shaped hollow block 702 is slidably installed in the circular bellows 607, and the left side of the T-shaped hollow block 702 extends to the outside of the circular bellows 607.

[0031] The flue gas entering the circular bellows 607 will pass through the grooved fixing plate 701 and enter the T-shaped hollow block 702 . At this time, the air pressure in the T-shaped hollow block 702 will increase, and the flue gas will push the T-shaped hollow block 702 to move away from the heat exchange box 2 .

[0032] like Figure 6 As shown, a limit spring 703 is fixedly installed on the left side of the grooved fixing plate 701, and the left end of the limit spring 703 is fixedly connected to the left inner wall of the T-shaped hollow block 702. A plurality of exhaust holes 704 are opened on the outer wall of the T-shaped hollow block 702.

[0033] The limiting spring 703 undergoes tensile deformation. When several exhaust holes 704 on the T-shaped hollow block 702 leave the circular air box 607, the flue gas will be discharged from the exhaust holes 704 for pressure relief. When the input of flue gas into the heat exchange box 2 stops, the corresponding T-shaped hollow block 702 will be reset under the elastic force of the limiting spring 703, and at this time, the exhaust holes 704 will enter the circular air box 607 again, effectively preventing dust from entering the device when the device is not in use and causing the driving fan blades 609 to be attached with dust and unable to rotate smoothly.

[0034] During use, the waste heat flue gas is discharged into the heat exchange box 2 through the air inlet pipe 3. The flue gas will enter the U-shaped air inlet groove 503 on the heat exchange box 2. As more and more gas enters the U-shaped air inlet groove 503, the air pressure in the U-shaped air inlet groove 503 will increase. At this time, the flue gas will push the two trapezoidal plates II 509 apart, and the corresponding water removal spring I 505 will undergo compressive deformation. The gas will also push the two trapezoidal plates I 506 away from each other, and the corresponding water removal spring II 508 will undergo compressive deformation. At this time, the flue gas will blow into the heat exchange box 2 simultaneously from the right inner wall, the right inner wall and the top inner wall of the heat exchange box 2. Under the elastic force of the water removal spring I 505 and the water removal spring II 508, the wind speed when the flue gas is discharged will be increased. The flue gas blows in all directions towards several fins 502 on several heat exchange tubes 4. At this time, the fins 502 will rotate under the blowing of the flue gas. During the rotation process of the fins 502, the flue gas that has come into contact with the fins 502 in the heat exchange box 2 will be disturbed. At this time, the flue gas will fill every corner of the heat exchange box 2, facilitating the fins 502 to absorb heat more comprehensively and evenly. The heat absorbed by the fins 502 will be transferred to the heat exchange tubes 4 through the rotating sleeve 501, and then the water in the heat exchange tubes 4 will be heated. During the heating process, a water film condensed from water vapor will be generated on the fins 502. During the continuous rotation of the fins 502, the centrifugal force will throw off the water film on the fins 502 and fall into the water storage inclined groove 601, preventing the water film from affecting the normal heat absorption of the fins 502, thereby ensuring that the flue gas can stably transfer heat and reducing heat energy loss; As more and more gas accumulates in the heat exchange box 2, the air pressure in the heat exchange box 2 will increase synchronously. The flue gas will enter the circular air box 607 along the air inlet groove 615. When the flue gas passes through several driving fan blades 609, it will drive several driving fan blades 609 to rotate. The driving fan blades 609 will drive the rotating rod 608 to rotate, and the rotating rod 608 will drive the transmission rod 610 to rotate. During the rotation of the transmission rod 610, it will come into contact with the special-shaped rod 611. At this time, the special-shaped rod 611 will move away from the circular air box 607. The special-shaped rod 611 will drive the sealing plate 604 to move away from the circular air box 607. At this time, the sealing spring 603 undergoes tensile deformation. As the transmission rod 610 rotates continuously, at this time, the sealing plate 604 will close the sealing groove 602, ensuring the sealing performance of the heat exchange box 2 and preventing the leakage of flue gas from affecting the heat transfer effect of the flue gas; The smoke entering the circular bellows 607 will pass through the grooved fixing plate 701 and enter the T-shaped hollow block 702. At this time, the air pressure in the T-shaped hollow block 702 will increase, and the smoke will push the T-shaped hollow block 702 to move away from the heat exchange box 2. At this time, the limit spring 703 will be stretched and deformed. After the several exhaust holes 704 on the T-shaped hollow block 702 leave the circular bellows 607, the smoke will be discharged from the exhaust holes 704 to release the pressure. When the smoke is stopped from being input into the heat exchange box 2, the corresponding T-shaped hollow block 702 will be reset under the elastic force of the limit spring 703, and the exhaust hole 704 will enter again. into the circular bellows 607, effectively preventing dust from entering the device when the device is not in use, causing the transmission fan blades 609 to be attached with dust and unable to rotate smoothly; when the flue gas input stops, since the transmission rod 610 no longer rotates, the sealing plate 604 will move in the direction of opening into the circular bellows 607 under the elastic force of the sealing spring 603, and open the sealing groove 602. At this time, the water in the water storage chute 601 will be discharged out of the device through the sealing groove 602, and the heat exchange tubes 4 and fins 502 in the heat exchange box 2 can also be cleaned to keep the device clean and tidy, and avoid scale impurities remaining in the heat exchange box 2 to affect the normal use of the heat exchange box 2.

[0035] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-efficiency flue gas waste heat exchanger, comprising two support plates (1), a heat exchange box (2) being fixedly mounted on the top of the two support plates (1), two air inlet pipes (3) being fixedly mounted on the top of the heat exchange box (2), and a plurality of heat exchange tubes (4) being fixedly mounted inside the heat exchange box (2), characterized in that: It further includes: A water removal mechanism (5), the water removal mechanism (5) includes a rotating sleeve (501) fixedly sleeved on a plurality of heat exchange tubes (4), fins (502) are respectively and fixedly installed on the plurality of rotating sleeves (501), a U-shaped air inlet groove (503) is formed in the heat exchange box (2), two first sliding grooves (504) are formed in the heat exchange box (2), the two first sliding grooves (504) are respectively communicated with the U-shaped air inlet groove (503) and the inside of the heat exchange box (2), a plurality of first water removal springs (505) are respectively and fixedly installed on the inner walls of the two first sliding grooves (504) away from each other, a plurality of first trapezoidal plates (506) are respectively and fixedly installed at the ends of the plurality of first water removal springs (505) close to each other, and the sides of the plurality of first trapezoidal plates (506) close to each other are in contact.

2. The high-efficiency flue gas waste heat exchanger according to claim 1, characterized in that: A second sliding groove (507) is formed in the heat exchange box (2), the second sliding groove (507) is communicated with the U-shaped air inlet groove (503) and the inside of the heat exchange box (2), a plurality of second water removal springs (508) are respectively and fixedly installed on the inner walls of the second sliding groove (507) away from each other, a plurality of second trapezoidal plates (509) are respectively and fixedly installed at the ends of the plurality of second water removal springs (508) close to each other, and the sides of the two second trapezoidal plates (509) close to each other are in contact.

3. The high-efficiency flue gas waste heat exchanger according to claim 2, characterized in that: A sealing mechanism (6) is arranged at the bottom of the heat exchange box (2), the sealing mechanism (6) includes a water storage inclined groove (601) formed on the inner wall sleeve at the bottom of the heat exchange box (2), a sealing groove (602) is formed in the heat exchange box (2), a plurality of sealing springs (603) are fixedly installed on the inner wall of the back of the sealing groove (602), and a sealing plate (604) is fixedly installed at the front ends of the plurality of sealing springs (603).

4. The high-efficiency flue gas waste heat exchanger according to claim 3 is characterized in that: A U-shaped mounting plate (606) is fixedly installed at the bottom of the two support plates (1), circular air boxes (607) are respectively and fixedly installed on the right side and the left side of the U-shaped mounting plate (606), rotating rods (608) are respectively and rotatably installed on the inner walls of the two circular air boxes (607) close to each other, the ends of the two rotating rods (608) away from each other respectively extend outside the two circular air boxes (607), and a plurality of transmission fan blades (609) are respectively and fixedly installed on the two rotating rods (608).

5. The high-efficiency flue gas waste heat exchanger according to claim 4, characterized in that: A plurality of transmission rods (610) are respectively and fixedly installed on the two rotating rods (608), rectangular sliding grooves (612) are respectively formed on the right side and the left side of the heat exchange box (2), special-shaped rods (611) are respectively and fixedly installed on the right side and the left side of the sealing plate (604), and the two special-shaped rods (611) respectively penetrate through the two rectangular sliding grooves (612) and are respectively slidably connected with the two rectangular sliding grooves (612).

6. The high-efficiency flue gas waste heat exchanger according to claim 4, characterized in that: Two arc-shaped plates (613) are fixedly mounted on the bottom inner wall of the heat exchange box (2), and a plurality of filter slots (614) are respectively provided on the two arc-shaped plates (613). Air inlet slots (615) are respectively provided on the left inner wall and the right inner wall of the heat exchange box (2), and the two air inlet slots (615) are respectively communicated with the two circular wind boxes (607).

7. The high-efficiency flue gas waste heat exchanger according to claim 4, characterized in that: A dustproof mechanism (7) is respectively arranged in the two circular bellows (607), the dustproof mechanism (7) comprising a grooved fixing plate (701) fixedly mounted in the circular bellows (607), the rotating rod (608) passing through the grooved fixing plate (701) and being rotatably connected to the grooved fixing plate (701), and a T-shaped hollow block (702) is slidably mounted in the circular bellows (607), the left side of the T-shaped hollow block (702) extending outside the circular bellows (607).

8. The high-efficiency flue gas waste heat exchanger according to claim 7, characterized in that: A limit spring (703) is fixedly installed on the left side of the grooved fixing plate (701), the left end of the limit spring (703) is fixedly connected to the left inner wall of the T-shaped hollow block (702), and a plurality of exhaust holes (704) are provided on the outer wall of the T-shaped hollow block (702).

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