Heat exchange equipment for waste heat recovery

Abstract

The application discloses a heat exchange equipment for waste heat recovery, and relates to the technical field of waste heat recovery.The heat exchange equipment for waste heat recovery comprises a heat exchange pipeline, a flow guide pipe is fixedly installed in the heat exchange pipeline, a speed adjusting part is arranged at one end of the heat exchange pipeline, an air inlet assembly is arranged outside the speed adjusting part, an air outlet part is arranged at the other end of the heat exchange pipeline, a condenser pipe is arranged outside the flow guide pipe in a ring shape, a pipe wall cleaning part is fixedly installed in the heat exchange pipeline, the pipe wall cleaning part comprises a fixing ring, a forward rotating rod and a reverse rotating rod are symmetrically arranged in the fixing ring, the forward rotating rod and the reverse rotating rod are fixedly connected to the air outlet part at the other ends, a driving motor is installed on the heat exchange pipeline, the driving motor is arranged close to the end where the air outlet part is located, and the flow speed of high-temperature flue gas and the flow speed of condensed water can be adapted to each other through cooperation of the air inlet assembly and the speed adjusting part, so that the waste heat of flue gas can be fully utilized, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field, specifically to a heat exchange device for waste heat recovery. Background Technology

[0002] Waste heat recovery technology effectively reduces energy consumption and carbon emissions by recovering and utilizing heat from high-temperature flue gas, making it an important pathway to green manufacturing. Currently, the most widely used waste heat recovery device is the shell-and-tube heat exchanger, which utilizes the temperature difference between high-temperature flue gas and a cooling medium to transfer heat from the flue gas to the cooling medium.

[0003] However, existing industrial flue gas waste heat recovery heat exchange equipment still faces many technical bottlenecks in practical applications, severely restricting the efficiency of waste heat utilization. First, the poor matching between flue gas flow rate and coolant flow rate makes it impossible to dynamically adjust the coolant flow rate according to real-time changes in flue gas volume, resulting in large fluctuations in heat exchange efficiency and poor heat exchange effect. Second, during the heat exchange process, dust particles in the flue gas form an adhesion layer on the outer wall of the condenser tube, creating a "fouling layer" with extremely high thermal resistance, which reduces the heat transfer coefficient and severely weakens the heat exchange efficiency.

[0004] Therefore, there is an urgent need in this field for a heat exchange device that can dynamically match flue gas flow rate with coolant flow rate and can clean condenser tubes in real time, thereby improving heat exchange efficiency and reducing maintenance costs. Summary of the Invention

[0005] The purpose of this invention is to provide a heat exchange device for waste heat recovery, so as to solve the problems raised in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The waste heat recovery heat exchange device includes a heat exchange pipe, a guide pipe is fixedly installed inside the heat exchange pipe, a speed regulating component is provided at one end of the heat exchange pipe, an air inlet component is provided outside the speed regulating component, an air outlet component is provided at the other end of the heat exchange pipe, a condenser pipe is provided around the outer ring of the guide pipe, a pipe wall cleaning component is fixedly installed inside the heat exchange pipe, the pipe wall cleaning component includes a fixing ring, a forward rotating rod and a reverse rotating rod are symmetrically arranged inside the fixing ring, the other ends of the forward rotating rod and the reverse rotating rod are fixedly connected to the air outlet component, and a drive motor is installed on the heat exchange pipe, the drive motor being close to the end where the air outlet component is located.

[0007] As a preferred technical solution, the heat exchange pipe has an inlet end and an outlet end on its side wall. One end of the guide pipe is provided with a main flow port, which is close to the end where the speed regulating component is located. An exhaust fan is fixedly installed at the other end of the guide pipe. Air outlets are uniformly arranged around the side wall of the guide pipe. Guide plates are uniformly arranged inside the guide pipe. The guide plates are cone-shaped and have a guide channel in the middle. The diameter of the guide channel varies uniformly, with the largest diameter near the main flow port.

[0008] As a preferred technical solution, the speed regulating component includes an regulating pipe, a main regulating wheel rotatably connected inside the regulating pipe, a retaining tooth provided on the outer side of the main regulating wheel, a turbine chamber fixedly installed on the outer wall of the regulating pipe, a turbine installed inside the turbine chamber, a drive shaft provided in the middle of the worm gear, an input end of the turbine chamber connected to the water outlet end, a water outlet pipe provided inside the turbine chamber, a driven tooth provided outside the turbine chamber, the driven tooth fixedly connected to the drive shaft, and the driven tooth meshing with the retaining tooth.

[0009] As a preferred technical solution, a fan blade is installed inside the air intake assembly, and a rotating shaft is provided in the middle of the fan blade, the rotating shaft being fixedly connected to the main adjusting wheel.

[0010] As a preferred technical solution, the air outlet is rotatably connected to the guide pipe, the outer side of the air outlet is provided with helical teeth, and the air outlet is provided with through holes.

[0011] As a preferred technical solution, the condenser is a spiral pipe, with one end connected to the water inlet and the other end connected to the water outlet.

[0012] As a preferred technical solution, the fixed ring is fixedly installed inside the heat exchange pipe. The fixed ring has evenly spaced arc-shaped grooves, and an arc-shaped spring is installed in the arc-shaped grooves. A connecting block is installed at one end of the forward rotating rod near the fixed ring. The forward rotating rod has evenly spaced movable grooves, and a slider is installed in the movable grooves. The slider is movably connected to the scraper ring. The scraper ring is sleeved on the condenser tube, and a reciprocating spring is installed in the movable grooves.

[0013] As a preferred technical solution, the installation direction of the reciprocating spring in the reverse rotating rod is opposite to the installation direction in the forward rotating rod, and the movement direction of the scraper ring is also opposite.

[0014] As a preferred technical solution, the drive motor is fixedly installed on the outer wall of the heat exchange pipe, and a drive wheel is provided at the output end of the drive motor. The drive wheel is provided with arc-shaped teeth, and the arc-shaped teeth mesh with the helical teeth.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. When the flue gas velocity changes, the rotation speed of the fan blades inside the air inlet can be changed, which in turn changes the rotation speed of the main regulating wheel that shares a common shaft. The main regulating wheel meshes with the driven gear, which ultimately changes the turbine speed, thereby regulating the circulation of condensate. Therefore, through the cooperation of the air inlet assembly and the speed regulating component, the flow rate of high-temperature flue gas can be matched with the flow rate of condensate, so as to make full use of the waste heat of flue gas and improve the heat exchange efficiency. 2. Due to the presence of a large amount of dust and impurities in the flue gas, these dust and impurities will adhere to the outer wall of the condenser tube during the heat exchange process, affecting the efficiency of heat exchange. By setting up a tube wall cleaning component, the tube wall of the condenser tube can be scraped back and forth under the drive of the drive motor, which can thoroughly clean the condenser tube and ensure the efficiency of heat exchange. 3. Several guide plates are evenly spaced inside the guide pipe, and the diameter of the guide channel in the middle of the guide plate changes uniformly. The closer to the main flow inlet, the larger the diameter of the guide channel. This ensures that the high-temperature flue gas is evenly distributed to all parts of the guide pipe, preventing uneven heating of the condenser tube and ensuring the condenser tube's efficiency in absorbing waste heat. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the main body of the present invention. Figure 3 This is a schematic diagram of the cross-sectional structure of the main body of the present invention; Figure 4 This is a schematic diagram of the pipe wall cleaning component of the present invention; Figure 5 This is a cross-sectional structural diagram of the speed regulating component of the present invention; Figure 6 This is a cross-sectional view of the fixing ring of the present invention; Figure 7 yes Figure 1 Enlarged structural diagram at point A in the diagram; Figure 8 yes Figure 3 A magnified structural diagram at point B in the diagram.

[0017] In the diagram: 1. Heat exchange pipe; 2. Speed ​​regulator; 3. Inlet assembly; 4. Outlet assembly; 5. Condenser pipe; 6. Pipe wall cleaning assembly; 7. Drive motor; 11. Guide pipe; 12. Inlet end; 13. Outlet end; 14. Exhaust fan; 21. Regulating pipe; 22. Main regulating wheel; 23. Turbine chamber; 24. Driven gear; 31. Fan blade; 32. Shaft; 41. Helical gear; 42. Through hole; 61. Fixing ring; 62. Forward rotating rod; 63. Reverse rotating rod; 71. Drive wheel; 72. Arc-shaped gear; 1101, Main flow inlet; 1102, Air outlet; 1103, Guide vane; 1104, Flow channel; 2201, Gear; 2301, Turbine; 2302, Drive shaft; 2303, Water outlet pipe; 6101, Arc groove; 6102, Arc spring; 6201, Connecting block; 6202, Movable groove; 6203, Slider; 6204, Scraper ring; 6205, Reciprocating spring. Detailed Implementation

[0018] 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.

[0019] Example: Figures 1-8 As shown, the present invention provides a technical solution for a waste heat recovery heat exchange device. The waste heat recovery heat exchange device includes a heat exchange pipe 1, a guide pipe 11 fixedly installed inside the heat exchange pipe 1, a speed regulating component 2 at one end of the heat exchange pipe 1, an air inlet component 3 outside the speed regulating component 2, an air outlet component 4 at the other end of the heat exchange pipe 1, a condenser pipe 5 surrounding the guide pipe 11, a pipe wall cleaning component 6 fixedly installed inside the heat exchange pipe 1, the pipe wall cleaning component 6 including a fixing ring 61, a forward rotating rod 62 and a reverse rotating rod 63 symmetrically arranged inside the fixing ring 61, the other ends of the forward rotating rod 62 and the reverse rotating rod 63 being fixedly connected to the air outlet component 4, and a drive motor 7 installed on the heat exchange pipe 1. At the end near the outlet component 4, the inner wall of the heat exchange pipe 1 is insulated to reduce heat loss. The speed regulating component 2 can adjust the flow rate of the condensate. The air intake component 3 can adjust the rotation speed of the fan blade 31 according to the flue gas volume. Through the cooperation of the air intake component 3 and the speed regulating component 2, the flow rate of the condensate can be matched with the flow rate of the flue gas, reducing heat loss and improving heat exchange efficiency. The outlet component 4 serves as the connecting component between the pipe wall cleaning component 6 and the drive motor 7. The condenser pipe 5 is a spiral pipe, which can increase the contact area with the flue gas and improve heat exchange efficiency. The pipe wall cleaning component 6 can clean the dust on the pipe wall of the condenser pipe 5 to prevent dust from reducing the heat transfer coefficient. The drive motor 7 can provide power for the operation of the pipe wall cleaning component 6.

[0020] After the flue gas is introduced into the heat exchange equipment, it first passes through the intake assembly 3. During the process of flue gas entering, the flow rate of the flue gas drives the fan blades 31 to rotate. When the fan blades 31 rotate, they drive the rotating shaft 32 to rotate synchronously. The main regulating wheel 22 and the fan blades 31 share a rotating shaft 32. Therefore, the rotating shaft 32 will drive the main regulating wheel 22 to rotate synchronously. When the main regulating wheel 22 rotates, the outer retaining teeth 2201 mesh with the driven teeth 24. Thus, the rotation of the main regulating wheel 22 will drive the driven teeth 24 to rotate. The driven teeth 24 and the turbine 2301 share a shaft. The drive shaft 2302 causes the driven gear 24 to rotate synchronously, which in turn drives the turbine 2301 to rotate synchronously. The turbine 2301 can change the circulation efficiency of the condensate in the condenser tube 5. In summary, when the flue gas velocity changes, the circulation speed of the condensate can be changed synchronously through a series of transmissions in the heat exchange equipment. This structure can make the flue gas velocity and the circulation efficiency of the condensate match. When the flue gas volume changes, the circulation efficiency of the condensate can be controlled, which greatly reduces the heat loss in the heat exchange pipe 1 and improves the heat exchange efficiency.

[0021] Because the flue gas contains some dust particles, these dust particles will adhere to the outer wall of the condenser tube 5 during the heat exchange process. This dust adhesion has a certain insulating effect, reducing the heat transfer coefficient of the condenser tube 5 and severely weakening the heat exchange efficiency. Therefore, a tube wall cleaning component 6 is installed to clean the tube wall of the condenser tube 5, ensuring that the heat exchange process is not affected. When cleaning the tube wall is required, the drive motor 7 is turned on, and the arc-shaped teeth 72 on the drive wheel 71 mesh with the helical teeth 41. Therefore, the drive motor 7 can drive the drive wheel 71 to rotate, and the cleaning is achieved through the inter-tooth... The meshing of the air outlet 4 can drive the rotation of the air outlet 4, which is also fixedly connected to the forward rotating rod 62 and the reverse rotating rod 63. Therefore, the rotation of the air outlet 4 will drive the forward rotating rod 62 and the reverse rotating rod 63 to rotate synchronously. The other end of the forward rotating rod 62 and the reverse rotating rod 63 is provided with a connecting block 6201. Both connecting blocks 6201 are embedded in independent arc-shaped grooves 6101. When the forward rotating rod 62 and the reverse rotating rod 63 rotate, the connecting block 6201 moves in the arc-shaped groove 6101 and compresses the arc-shaped spring 6102. Meanwhile, as the forward rotating rod 62 and the reverse rotating rod 63 rotate, the scraper ring 6204 fitted on the condenser tube 5 also cleans the outer wall of the condenser tube 5. Since the condenser tube 5 is a spiral pipe, and the scraper ring 6204 is rotatably connected to the slider 6203, during the rotation of the forward rotating rod 62, the slider 6203 will drive the scraper ring 6204 to move along the direction of the movable groove 6202 and compress the reciprocating spring 6205. On the other hand, the slider 6203 on the reverse rotating rod 63 moves in the opposite direction to the forward rotating rod 62. Multiple sets of scraper rings 6204 arranged at equal intervals can clean the entire outer wall of the condenser tube 5 to prevent dust from adhering. During the continuous rotation of the drive motor 7, if the arc-shaped teeth 72 do not contact the helical teeth 41, the forward rotating rod 62 and the reverse rotating rod 63 will move in opposite directions to their original positions under the action of the arc-shaped springs 6102 in their respective arc-shaped grooves 6101. The scraper rings 6204 will also move in opposite directions to their initial positions along the condenser tube 5. During the reverse movement, the scraper rings 6204 will also perform secondary scraping on the wall of the condenser tube 5 to ensure cleaning efficiency.

[0022] When the flue gas velocity changes, the rotation speed of the fan blades 31 inside the intake end can be changed, which in turn changes the rotation speed of the main regulating wheel 22 that shares a common shaft 32. The main regulating wheel 22 meshes with the driven gear 24, which ultimately changes the rotation speed of the turbine 2301, thereby regulating the circulation of condensate. Therefore, through the cooperation of the intake assembly 3 and the speed regulating component 2, the flow rate of high-temperature flue gas can be matched with the flow rate of condensate, so as to make full use of the waste heat of flue gas and improve the heat exchange efficiency.

[0023] Because the flue gas contains a lot of dust and impurities, these dust and impurities will adhere to the outer wall of the condenser tube 5 during the heat exchange process, affecting the efficiency of heat exchange. By setting up the tube wall cleaning component 6, the tube wall of the condenser tube 5 can be scraped back and forth under the drive of the drive motor 7, so as to thoroughly clean the condenser tube 5 and ensure the efficiency of heat exchange.

[0024] Several guide plates 1103 are equidistantly arranged inside the guide pipe 11, and the diameter of the guide channel 1104 in the middle of the guide plate 1103 varies uniformly. The closer to the main flow port 1101, the larger the diameter of the guide channel 1104. This ensures that the high-temperature flue gas is evenly distributed to all parts of the guide pipe 11, preventing uneven heating of the condenser 5 and ensuring the condenser 5's efficiency in absorbing waste heat.

[0025] The heat exchange pipe 1 has an inlet end 12 and an outlet end 13 on its side wall. One end of the guide pipe 11 is provided with a main flow port 1101, which is close to the end where the speed regulating component 2 is located. An exhaust fan 14 is fixedly installed at the other end of the guide pipe 11. The side wall of the guide pipe 11 is uniformly provided with air outlets 1102. Guide plates 1103 are uniformly arranged inside the guide pipe 11. The guide plates 1103 are set in a conical shape. A guide channel 1104 is opened in the middle of the guide plate 1103. The diameter of the guide channel 1104 varies uniformly, and the diameter of the guide channel 1104 near the main flow port 1101 is the largest.

[0026] Speed ​​regulating component 2 includes regulating pipe 21, with a main regulating wheel 22 rotatably connected inside the regulating pipe 21. A retaining tooth 2201 is provided on the outer side of the main regulating wheel 22. A turbine chamber 23 is fixedly installed on the outer wall of the regulating pipe 21, with a turbine 2301 installed inside the turbine chamber 23. A drive shaft 2302 is located in the middle of the worm gear 2301. The input end of the turbine chamber 23 is connected to the water outlet end 13. A water outlet pipe 2303 is provided inside the turbine chamber 23. A driven tooth 24 is provided outside the turbine chamber 23, fixedly connected to the drive shaft 2302. The driven tooth 24 meshes with the retaining tooth 2201, allowing the flue gas to pass through during its entry. The flow rate drives the fan blades 31 to rotate. When the fan blades 31 rotate, they drive the shaft 32 to rotate synchronously. The main regulating wheel 22 and the fan blades 31 share a shaft 32. Therefore, the shaft 32 will drive the main regulating wheel 22 to rotate synchronously. When the main regulating wheel 22 rotates, the outer teeth 2201 mesh with the driven teeth 24. Therefore, the rotation of the main regulating wheel 22 will drive the driven teeth 24 to rotate. The driven teeth 24 and the turbine 2301 share a drive shaft 2302. Therefore, the rotation of the driven teeth 24 will drive the turbine 2301 to rotate synchronously. The turbine 2301 can change the circulation efficiency of the condensate in the condenser tube 5.

[0027] The intake assembly 3 is equipped with a fan blade 31, and a rotating shaft 32 is provided in the middle of the fan blade 31. The rotating shaft 32 is fixedly connected to the main adjusting wheel 22.

[0028] The air outlet 4 is rotatably connected to the guide pipe 11. The outer side of the air outlet 4 is provided with helical teeth 41, and the air outlet 4 is provided with through holes 42.

[0029] The condenser tube 5 is a spiral pipe. One end of the condenser tube 5 is connected to the water inlet 12, and the other end of the condenser tube 5 is connected to the water outlet 13.

[0030] A fixed ring 61 is fixedly installed inside the heat exchange pipe 1. Arc-shaped grooves 6101 are evenly distributed on the fixed ring 61, and arc-shaped springs 6102 are installed within the arc-shaped grooves 6101. A connecting block 6201 is provided at one end of the forward rotating rod 62 near the fixed ring 61. Movable grooves 6202 are evenly distributed on the forward rotating rod 62, and sliders 6203 are installed within the movable grooves 6202. The sliders 6203 are movably connected to scraper rings 6204, which are fitted onto the condenser tube 5. A reciprocating spring 6205 is installed within the movable grooves 6202. Connecting blocks 6201 are provided at the other ends of the forward rotating rod 62 and the reverse rotating rod 63. Both connecting blocks 6201 are embedded within independent arc-shaped grooves 6101. When the forward rotating rod 62 and the reverse rotating rod 63 rotate... The connecting block 6201 moves within the arc-shaped groove 6101 and compresses the arc-shaped spring 6102. Simultaneously, as the forward rotating rod 62 and the reverse rotating rod 63 rotate, the scraper ring 6204 fitted on the condenser tube 5 also cleans the outer wall of the condenser tube 5. Since the condenser tube 5 is a spiral pipe, and the scraper ring 6204 is rotatably connected to the slider 6203, during the rotation of the forward rotating rod 62, the slider 6203 will drive the scraper ring 6204 to move along the direction of the movable groove 6202 and compress the reciprocating spring 6205. Meanwhile, the slider 6203 on the reverse rotating rod 63 on the other side moves in the opposite direction to the forward rotating rod 62. Through multiple sets of scraper rings 6204 arranged at equal intervals, the entire outer wall of the condenser tube 5 can be cleaned to prevent dust from adhering.

[0031] The installation direction of the reciprocating spring 6205 inside the reverse rotating rod 63 is opposite to that inside the forward rotating rod 62, and the movement direction of the scraper ring 6204 is also opposite.

[0032] The drive motor 7 is fixedly installed on the outer wall of the heat exchange pipe 1. The output end of the drive motor 7 is provided with a drive wheel 71, and the drive wheel 71 is provided with arc-shaped teeth 72, which mesh with the helical teeth 41.

[0033] Working principle of the invention: After the flue gas is introduced into the heat exchange equipment, it first passes through the intake assembly 3. During the process of flue gas entering, the flow rate of the flue gas drives the fan blades 31 to rotate. When the fan blades 31 rotate, they drive the rotating shaft 32 to rotate synchronously. The main regulating wheel 22 and the fan blades 31 share a rotating shaft 32. Therefore, the rotating shaft 32 will drive the main regulating wheel 22 to rotate synchronously. When the main regulating wheel 22 rotates, the outer retaining teeth 2201 mesh with the driven teeth 24. Thus, the rotation of the main regulating wheel 22 will drive the driven teeth 24 to rotate. The driven teeth 24 and the turbine 2301 share a shaft. The drive shaft 2302 causes the driven gear 24 to rotate synchronously, which in turn drives the turbine 2301 to rotate synchronously. The turbine 2301 can change the circulation efficiency of the condensate in the condenser tube 5. In summary, when the flue gas velocity changes, the circulation speed of the condensate can be changed synchronously through a series of transmissions in the heat exchange equipment. This structure can make the flue gas velocity and the circulation efficiency of the condensate match. When the flue gas volume changes, the circulation efficiency of the condensate can be controlled, which greatly reduces the heat loss in the heat exchange pipe 1 and improves the heat exchange efficiency.

[0034] Because the flue gas contains some dust particles, these dust particles will adhere to the outer wall of the condenser tube 5 during the heat exchange process. This dust adhesion has a certain insulating effect, reducing the heat transfer coefficient of the condenser tube 5 and severely weakening the heat exchange efficiency. Therefore, a tube wall cleaning component 6 is installed to clean the tube wall of the condenser tube 5, ensuring that the heat exchange process is not affected. When cleaning the tube wall is required, the drive motor 7 is turned on, and the arc-shaped teeth 72 on the drive wheel 71 mesh with the helical teeth 41. Therefore, the drive motor 7 can drive the drive wheel 71 to rotate, and the cleaning is achieved through the inter-tooth... The meshing of the air outlet 4 can drive the rotation of the air outlet 4, which is also fixedly connected to the forward rotating rod 62 and the reverse rotating rod 63. Therefore, the rotation of the air outlet 4 will drive the forward rotating rod 62 and the reverse rotating rod 63 to rotate synchronously. The other end of the forward rotating rod 62 and the reverse rotating rod 63 is provided with a connecting block 6201. Both connecting blocks 6201 are embedded in independent arc-shaped grooves 6101. When the forward rotating rod 62 and the reverse rotating rod 63 rotate, the connecting block 6201 moves in the arc-shaped groove 6101 and compresses the arc-shaped spring 6102. Meanwhile, as the forward rotating rod 62 and the reverse rotating rod 63 rotate, the scraper ring 6204 fitted on the condenser tube 5 also cleans the outer wall of the condenser tube 5. Since the condenser tube 5 is a spiral pipe, and the scraper ring 6204 is rotatably connected to the slider 6203, during the rotation of the forward rotating rod 62, the slider 6203 will drive the scraper ring 6204 to move along the direction of the movable groove 6202 and compress the reciprocating spring 6205. On the other hand, the slider 6203 on the reverse rotating rod 63 moves in the opposite direction to the forward rotating rod 62. Multiple sets of scraper rings 6204 arranged at equal intervals can clean the entire outer wall of the condenser tube 5 to prevent dust from adhering. During the continuous rotation of the drive motor 7, if the arc-shaped teeth 72 do not contact the helical teeth 41, the forward rotating rod 62 and the reverse rotating rod 63 will move in opposite directions to their original positions under the action of the arc-shaped springs 6102 in their respective arc-shaped grooves 6101. The scraper rings 6204 will also move in opposite directions to their initial positions along the condenser tube 5. During the reverse movement, the scraper rings 6204 will also perform secondary scraping on the wall of the condenser tube 5 to ensure cleaning efficiency.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A heat exchange device for waste heat recovery, characterized in that: The waste heat recovery heat exchange equipment includes a heat exchange pipe (1), a guide pipe (11) is fixedly installed inside the heat exchange pipe (1), a speed regulating component (2) is provided at one end of the heat exchange pipe (1), an air inlet component (3) is provided on the outside of the speed regulating component (2), an air outlet component (4) is provided at the other end of the heat exchange pipe (1), a condenser pipe (5) is provided around the outer ring of the guide pipe (11), a pipe wall cleaning component (6) is fixedly installed inside the heat exchange pipe (1), the pipe wall cleaning component (6) includes a fixing ring (61), a forward rotating rod (62) and a reverse rotating rod (63) are symmetrically arranged inside the fixing ring (61), the other ends of the forward rotating rod (62) and the reverse rotating rod (63) are fixedly connected to the air outlet component (4), a drive motor (7) is installed on the heat exchange pipe (1), and the drive motor (7) is close to the end where the air outlet component (4) is located.

2. The waste heat recovery heat exchange device according to claim 1, characterized in that: The heat exchange pipe (1) has an inlet end (12) and an outlet end (13) on its side wall. One end of the guide pipe (11) is provided with a main flow port (1101). The main flow port (1101) is close to the end where the speed regulating component (2) is located. An exhaust fan (14) is fixedly installed at the other end of the guide pipe (11). The side wall of the guide pipe (11) is uniformly provided with air outlets (1102). The guide plate (1103) is uniformly arranged inside the guide pipe (11). The guide plate (1103) is set in a conical shape. A guide channel (1104) is opened in the middle of the guide plate (1103). The diameter of the guide channel (1104) varies uniformly. The diameter of the guide channel (1104) close to the main flow port (1101) is the largest.

3. The waste heat recovery heat exchange device according to claim 2, characterized in that: The speed regulating component (2) includes a regulating pipe (21), a main regulating wheel (22) is rotatably connected inside the regulating pipe (21), a locking tooth (2201) is provided on the outside of the main regulating wheel (22), a turbine chamber (23) is fixedly installed on the outer wall of the regulating pipe (21), a turbine (2301) is installed inside the turbine chamber (23), a drive shaft (2302) is provided in the middle of the worm gear (2301), the input end of the turbine chamber (23) is connected to the water outlet end (13), a water outlet pipe (2303) is provided inside the turbine chamber (23), a driven tooth (24) is provided outside the turbine chamber (23), the driven tooth (24) is fixedly connected to the drive shaft (2302), and the driven tooth (24) meshes with the locking tooth (2201).

4. The waste heat recovery heat exchange device according to claim 3, characterized in that: The air intake assembly (3) is equipped with a fan blade (31), and a rotating shaft (32) is provided in the middle of the fan blade (31). The rotating shaft (32) is fixedly connected to the main adjusting wheel (22).

5. A waste heat recovery heat exchange device according to claim 4, characterized in that: The air outlet (4) is rotatably connected to the guide pipe (11), and the outer side of the air outlet (4) is provided with helical teeth (41), and the air outlet (4) is provided with through holes (42).

6. The waste heat recovery heat exchange device according to claim 5, characterized in that: The condenser tube (5) is a spiral pipe. One end of the condenser tube (5) is connected to the water inlet (12), and the other end of the condenser tube (5) is connected to the water outlet (13).

7. A waste heat recovery heat exchange device according to claim 6, characterized in that: The fixed ring (61) is fixedly installed inside the heat exchange pipe (1). The fixed ring (61) is evenly provided with arc-shaped grooves (6101). An arc-shaped spring (6102) is provided in the arc-shaped grooves (6101). A connecting block (6201) is provided at one end of the forward rotating rod (62) near the fixed ring (61). The forward rotating rod (62) is evenly provided with movable grooves (6202). A slider (6203) is provided in the movable grooves (6202). The slider (6203) is movably connected to the scraper ring (6204). The scraper ring (6204) is sleeved on the condenser pipe (5). A reciprocating spring (6205) is provided in the movable grooves (6202).

8. A waste heat recovery heat exchange device according to claim 7, characterized in that: The installation direction of the reciprocating spring (6205) inside the reverse rotating rod (63) is opposite to the installation direction inside the forward rotating rod (62), and the movement direction of the scraper ring (6204) is also opposite.

9. A waste heat recovery heat exchange device according to claim 8, characterized in that: The drive motor (7) is fixedly installed on the outer wall of the heat exchange pipe (1). The output end of the drive motor (7) is provided with a drive wheel (71). The drive wheel (71) is provided with arc-shaped teeth (72). The arc-shaped teeth (72) mesh with the helical teeth (41).

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