Heat exchanger for waste heat recovery

Abstract

The utility model relates to heat exchanger technical field, concretely is a kind of heat exchanger of waste heat recycling, including equipment main body, the side of equipment main body is provided with smoke outlet pipe, one end of smoke outlet pipe is penetrated and is provided with purification tank, the lower end of purification tank is provided with protective cover, the lower end in protective cover is equipped with power mechanism, drive gear is equipped on power mechanism, the other side of drive gear is engaged and has cleaning mechanism, the side of drive gear is engaged and has air suction mechanism. The utility model can when high-efficiency waste heat equipment operates, directly to the flue gas of high-efficiency waste heat equipment discharge is filtered and purified, avoid not having been purified flue gas to be discharged to air, guarantee the environmental protection of high-efficiency waste heat equipment, and can be while purifying flue gas, improve the smoke exhaust and heat exchange efficiency of high-efficiency waste heat equipment.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a heat exchanger for waste heat recovery and utilization. Background Technology

[0002] Industrial production processes, especially in industries such as steel, chemicals, petroleum, building materials, light industry, and food, often generate a large amount of waste heat. If this waste heat is not effectively utilized, it will not only result in enormous energy waste but also have negative environmental impacts, such as increasing greenhouse gas emissions and pollutant emissions. Therefore, the development and application of waste heat recovery technology is particularly important. Waste heat recovery heat exchangers, as a highly efficient and environmentally friendly device, have emerged in this context. Utilizing the principle of heat exchange, this heat energy is converted into reusable energy, such as thermal energy or electrical energy, thereby achieving energy conservation and reducing environmental impact. The working principle of waste heat recovery heat exchangers is based on the fundamental principle of heat exchange, that is, the process of heat being transferred from one medium to another.

[0003] Existing waste heat recovery heat exchangers may be good at recovering and utilizing waste heat, but the hot gas is slowly discharged, and it is inconvenient to repair and maintain the equipment when a fault occurs inside. Opening the equipment casing is also wasteful, and the equipment failure repair will affect normal production operations.

[0004] The waste heat recovery heat exchanger disclosed in CN222812221U includes a heat exchanger shell, through which a heat exchange coil is fixedly connected. Both ends of the heat exchange coil are fixedly connected to reducing couplings. One end of one set of reducing couplings is fixedly connected to a first circulation pipe, and one end of the first circulation pipe is fixedly connected to a first flange. Another set of reducing couplings is fixedly connected to one end of a second circulation pipe, and one end of the second circulation pipe is fixedly connected to a second flange. This invention features a compact internal structure, effectively improving heat exchange efficiency and enabling more complete recovery and utilization of waste heat. It also includes a fan to accelerate the heat exchange process and allows for rapid adjustment of the heat exchange rate when needed, enhancing the practicality of the device. Furthermore, the flange connections facilitate disassembly and individual maintenance of each component, improving the device's convenience.

[0005] Most existing equipment cannot directly purify flue gas during the emission process, resulting in the emission of unpurified flue gas, which reduces the efficiency of waste heat recovery. Therefore, improvements are needed. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a waste heat recovery heat exchanger.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A heat exchanger for waste heat recovery includes a main body of the equipment. A flue pipe is provided on one side of the main body of the equipment. A purification box is provided through one end of the flue pipe. A protective cover is provided at the lower end of the purification box. A power mechanism is provided at the lower end inside the protective cover. A drive gear is provided on the power mechanism. A cleaning mechanism is engaged on the other side of the drive gear. A suction mechanism is engaged on one side of the drive gear. A flue is provided through one side of the purification box, and a filter screen is detachably connected to the other side of the purification box. An activated carbon purification plate is detachably connected to one side of the purification box. A first rotating shaft is provided on the cleaning mechanism, and a cleaning plate is fixedly connected to one end of the first rotating shaft. A brush is provided on one side of the cleaning plate, and the brush abuts against the filter screen. A second rotating shaft is provided on the suction mechanism, and a fan blade is fixedly connected to one end of the second rotating shaft. The fan blade is arranged corresponding to the flue.

[0008] Preferably, in order to provide power for the rotation of the drive gear, the power mechanism includes a motor fixedly installed at the lower end of the protective cover, the output shaft of the motor being fixedly connected to the middle of the lower end of the drive gear, and the lower end of the protective cover having multiple ventilation holes at equal intervals.

[0009] Preferably, in order to drive the first rotating shaft to rotate by rotating the drive gear, the cleaning mechanism includes a large transmission gear meshing on the other side of the drive gear, and a worm gear rotatably connected to the other side of the purification box. The lower end of the worm gear passes through the lower end of the purification box and is fixedly connected to the upper middle part of the large transmission gear. A worm wheel meshes on one side of the worm gear, and the worm wheel is fixedly connected to the other end of the first rotating shaft.

[0010] Preferably, in order to drive the second rotating shaft to rotate via the rotation of the drive gear, the suction mechanism includes a small transmission gear meshing with one side of the drive gear, a transmission rod rotatably connected to one side of the purification box, the lower end of the transmission rod passing through the lower end of the purification box and fixedly connected to the upper middle part of the small transmission gear, a drive bevel gear fixedly sleeved in the middle part of the transmission rod, a transmission bevel gear meshing with one side of the upper end of the drive bevel gear, and the transmission bevel gear fixedly connected to the other end of the second rotating shaft.

[0011] Preferably, in order to support the first rotating shaft and install it inside the purification chamber, a first bearing is rotatably sleeved on the first rotating shaft, and a first crossbar is fixedly connected to both sides of the first bearing. The other ends of the two first crossbars are respectively fixedly connected to the opposite inner walls of the purification chamber.

[0012] Preferably, to support the second rotating shaft and install it inside the purification chamber, a second bearing is rotatably sleeved on the second rotating shaft. Second crossbars are fixedly connected to both sides of the second bearing, and the other ends of the two second crossbars are respectively fixedly connected to the opposite inner walls of the purification chamber. Preferably, to support one side of the filter screen and activated carbon purification plate and prevent them from being deformed by wind, three first rollers are evenly spaced abutting one side of the filter screen, and three second rollers are evenly spaced abutting one side of the activated carbon purification plate. The two ends of the three first rollers and three second rollers are respectively rotatably connected to the opposite inner walls of the purification chamber. Preferably, to facilitate the disassembly and replacement of the filter screen and activated carbon purification plate, the upper end of the filter screen penetrates the upper end of the purification chamber and is provided with a first connecting plate, and the upper end of the activated carbon purification plate penetrates the upper end of the purification chamber and is provided with a second connecting plate. Both the first and second connecting plates are detachably installed on the upper end of the purification chamber, and each of the first and second connecting plates is provided with a handle.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By using components such as filter screens and activated carbon purification plates, the flue gas discharged from the high-efficiency waste heat equipment can be directly filtered and purified, so that the flue gas discharged from the high-efficiency waste heat equipment meets environmental protection standards, avoiding pollution of the surrounding environment by the flue gas discharged from the high-efficiency waste heat equipment, and effectively ensuring the environmental protection effect of the high-efficiency waste heat equipment. 2. Through the use of the cleaning mechanism and the suction mechanism, the cleaning mechanism can clean the filter screen to avoid the filter screen from being blocked and affecting the smoke exhaust and heat exchange efficiency of the high-efficiency waste heat equipment. The suction mechanism can quickly draw the flue gas into the flue during the process of flue gas purification by the activated carbon purification plate, so as to ensure the smoke exhaust and heat exchange efficiency of the high-efficiency waste heat equipment while purifying the flue gas. In summary, this utility model can directly filter and purify the flue gas discharged from the high-efficiency waste heat equipment during operation, preventing unpurified flue gas from being emitted into the air, ensuring the environmental friendliness of the high-efficiency waste heat equipment, and improving the exhaust and heat exchange efficiency of the high-efficiency waste heat equipment while purifying the flue gas. Attached Figure Description

[0014] Figure 1 This is a connection structure diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the purification box of this utility model; Figure 3 Appendix to this utility model Figure 2 Enlarged view of point A; Figure 4 Appendix to this utility model Figure 2 Enlarged view of point B.

[0015] In the diagram: 1. Main body of the equipment; 2. Exhaust pipe; 3. Purification box; 4. Flue; 5. Filter screen; 6. First connecting plate; 7. Activated carbon purification plate; 8. Second connecting plate; 9. Handle; 10. First roller; 11. Second roller; 12. Protective cover; 13. Motor; 14. Drive gear; 15. Large transmission gear; 16. Worm gear; 17. Worm wheel; 18. First rotating shaft; 19. Cleaning plate; 20. Brush; 21. First bearing; 22. First crossbar; 23. Small transmission gear; 24. Transmission rod; 25. Drive bevel gear; 26. Transmission bevel gear; 27. Second rotating shaft; 28. Fan blade; 29. ​​Second bearing; 30. Second crossbar. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-4 A waste heat recovery heat exchanger includes a main body 1, with a flue pipe 2 installed on one side of the main body 1. The main body 1 is a device that uses the waste heat from waste gas, waste materials, or waste liquid in various industrial processes, as well as the heat generated by the combustion of combustible substances, to heat water to a certain working fluid. The flue gas generated when the main body 1 is in operation is discharged through the flue pipe 2. A purification box 3 is installed through one end of the flue pipe 2, and a flue 4 is installed through one side of the purification box 3. The flue gas discharged from the flue pipe 2 enters the purification box 3 and is filtered and purified by the filtration and purification device in the purification box 3 before being discharged into the flue 4. This effectively solves the problem that the traditional main body 1 cannot directly purify the flue gas, effectively improving the environmental friendliness of the main body 1, and ensuring that the flue gas after removing impurities can be fully purified.

[0018] Reference Figure 1-4A filter screen 5 is detachably connected to one side of the purification chamber 3, and an activated carbon purification plate 7 is detachably connected to one side of the purification chamber 3. The filter screen 5 can filter impurities and particles in the flue gas inside the purification chamber 3. The filtered flue gas will then undergo deep purification through the activated carbon purification plate 7, effectively purifying harmful gases in the flue gas and ensuring the environmental friendliness of the flue gas discharged from the main body of the equipment 1. The upper end of the filter screen 5 penetrates through the upper end of the purification chamber 3 and is provided with a first connecting plate 6. The upper end of the activated carbon purification plate 7 penetrates through the upper end of the purification chamber 3 and is provided with a second connecting plate 8. Both the first connecting plate 6 and the second connecting plate 8 can be detachably installed on the upper end of the purification chamber 3. The first connecting plate 6 is fixedly connected to the filter screen 5, and the filter screen 5 can be removed from the purification chamber 3 by removing or installing the first connecting plate 6. The second connecting plate 8 is fixedly connected to the activated carbon purification plate 7. The activated carbon purification plate 7 can be removed from the purification box 3 by disassembling and assembling the second connecting plate 8. Both the first connecting plate 6 and the second connecting plate 8 have handles 9 at their upper ends, allowing for easy removal and assembly / disassembly. Three first rollers 10 are evenly spaced against one side of the filter screen 5, and three second rollers 11 are evenly spaced against one side of the activated carbon purification plate 7. The two ends of the three first rollers 10 and three second rollers 11 are rotatably connected to the opposite inner walls of the purification box 3. The three first rollers 10 support one side of the filter screen 5 to prevent it from being deformed by wind, and the three second rollers 11 support one side of the activated carbon purification plate 7 to prevent it from being deformed by wind. (Refer to...) Figure 2 The lower end of the purification box 3 is equipped with a protective cover 12. The lower end of the protective cover 12 is equipped with a power mechanism. The protective cover 12 is used to support and protect the components of the power mechanism, preventing the components of the power mechanism from being exposed and damaged. The power mechanism is equipped with a drive gear 14. The power mechanism includes a motor 13 fixedly installed in the lower end of the protective cover 12. The output shaft of the motor 13 is fixedly connected to the middle of the lower end of the drive gear 14. The motor 13 and its supporting components are connected to facilitate stable operation. The motor 13 can be programmed to operate automatically. The operation of the motor 13 will drive the drive gear 14 to rotate. Multiple ventilation holes are evenly spaced at the lower end of the protective cover 12. The multiple ventilation holes are used for ventilation inside the protective cover 12 to prevent the motor 13 inside the protective cover 12 from being damaged due to insufficient heat dissipation.

[0019] Reference Figure 2 , 3On the other side of the drive gear 14, a cleaning mechanism is engaged. The cleaning mechanism has a first rotating shaft 18, on which a first bearing 21 is rotatably sleeved. The rotation of the drive gear 14 provides power to the cleaning mechanism, which in turn drives the first rotating shaft 18 to rotate. First crossbars 22 are fixedly connected to both sides of the first bearing 21. The other ends of the two first crossbars 22 are respectively fixedly connected to the opposite inner walls of the purification box 3. The two first crossbars 22 can securely install the first bearing 21. Inside the purification chamber 3, the first bearing 21 supports the first rotating shaft 18, allowing the first rotating shaft 18 to rotate smoothly within the purification chamber 3. A cleaning plate 19 is fixedly connected to one end of the first rotating shaft 18, and a brush 20 is provided on one side of the cleaning plate 19. The brush 20 abuts against the filter screen 5. The rotation of the first rotating shaft 18 will drive the cleaning plate 19 to rotate, and the rotation of the cleaning plate 19 will drive the brush 20 to operate. The operation of the brush 20 will clean the filter screen 5, preventing the filter screen 5 from becoming clogged and affecting the filtration efficiency of the flue gas.

[0020] Reference Figure 2 , 3 The cleaning mechanism includes a large transmission gear 15 meshing with the drive gear 14 on the other side. A worm gear 16 is rotatably connected to the other side of the purification box 3. The lower end of the worm gear 16 passes through the lower end of the purification box 3 and is fixedly connected to the upper middle part of the large transmission gear 15. The large transmission gear 15 has a large diameter. When the drive gear 14 rotates, it will push the large transmission gear 15 to rotate. Because of its large diameter, the large transmission gear 15 will drive the worm gear 16 to rotate slowly. A worm wheel 17 meshes with one side of the worm gear 16. The worm wheel 17 is fixedly connected to the other end of the first rotating shaft 18. The slow rotation of the worm gear 16 will push the worm wheel 17 to rotate slowly. The worm wheel 17 will drive the first rotating shaft 18 to rotate. The rotation of the first rotating shaft 18 will drive the cleaning plate 19 to rotate. The rotation of the cleaning plate 19 will drive the brush 20 to operate. The operation of the brush 20 will clean the filter screen 5 to prevent the filter screen 5 from clogging and affecting the filtration efficiency of the flue gas.

[0021] Reference Figure 2 , 4A suction mechanism is engaged on one side of the drive gear 14. The suction mechanism has a second rotating shaft 27. The rotation of the drive gear 14, while pushing the cleaning mechanism, provides power to the suction mechanism. The suction mechanism, in turn, drives the second rotating shaft 27. A second bearing 29 is rotatably sleeved on the second rotating shaft 27. Second crossbars 30 are fixedly connected to both sides of the second bearing 29. The other ends of the two second crossbars 30 are respectively fixedly connected to the opposite inner walls of the purification box 3. The two second crossbars 30 can support the second bearing... The second bearing 29 is fixed inside the purification chamber 3. The second bearing 29 supports the second rotating shaft 27, allowing it to rotate smoothly within the purification chamber 3. A fan blade 28 is fixedly connected to one end of the second rotating shaft 27. The fan blade 28 is correspondingly positioned with the flue 4. Rotation of the second rotating shaft 27 drives the fan blade 28 to rotate, generating airflow that allows the air inside the purification chamber 3 to quickly pass through the filter screen 5 and activated carbon purification plate 7 into the flue 4, thus improving the filtration and purification efficiency of the flue gas. (Refer to...) Figure 2 , 4 The suction mechanism includes a small transmission gear 23 meshing with one side of the drive gear 14. A transmission rod 24 is rotatably connected to one side of the purification box 3. The lower end of the transmission rod 24 passes through the lower end of the purification box 3 and is fixedly connected to the upper middle part of the small transmission gear 23. The rotation of the drive gear 14 will drive the small transmission gear 23 to rotate. The small transmission gear 23 has a small diameter, so the rotation of the drive gear 14 will drive the small transmission gear 23 to rotate rapidly. The small transmission gear 23 will drive the transmission rod 24 to rotate rapidly. A drive rod 24 is fixedly sleeved in the middle. The driving bevel gear 25 has a transmission bevel gear 26 meshing on one side of its upper end. The transmission bevel gear 26 is fixedly connected to the other end of the second rotating shaft 27. The transmission rod 24 drives the driving bevel gear 25 to rotate, which in turn drives the transmission bevel gear 26 to rotate. The transmission bevel gear 26 then drives the second rotating shaft 27 to rotate, which in turn drives the fan blades 28 to rotate. The rotation of the fan blades 28 generates wind power, which causes the air in the purification box 3 to quickly pass through the filter screen 5 and the activated carbon purification plate 7 and enter the flue 4.

[0022] In this utility model, during use: the flue gas generated when the main body 1 of the equipment is operating is discharged into the purification box 3 through the flue pipe 2. The flue gas in the purification box 3 undergoes the first stage of impurity particle filtration through the filter screen 5. The flue gas passing through the filter screen 5 then undergoes further purification filtration through the activated carbon purification plate 7. The purified flue gas enters the flue 4. During the flue gas purification process, the supporting control equipment controls the operation of the motor 13. The motor 13 drives the drive gear 14 to rotate, which in turn drives the large transmission gear 15 and the small transmission gear 23 to rotate. The large transmission gear 15 drives the worm gear 16 to rotate, which in turn drives the worm wheel 17 to rotate, which in turn drives the second stage of the worm gear 16 to rotate. A rotating shaft 18 rotates, which drives a cleaning plate 19 to rotate. The cleaning plate 19 drives a brush 20 to operate, and the brush 20 cleans the filter screen 5 to prevent the filter screen 5 from clogging and affecting the filtration efficiency of the flue gas. A small transmission gear 23 drives a transmission rod 24 to rotate, which in turn drives a drive bevel gear 25 to rotate. The drive bevel gear 25 then drives a transmission bevel gear 26 to rotate, which in turn drives a second rotating shaft 27 to rotate. The second rotating shaft 27 then drives a fan blade 28 to rotate, and the fan blade 28 generates airflow, causing the air in the purification box 3 to quickly pass through the filter screen 5 and the activated carbon purification plate 7 and enter the flue 4.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat exchanger for waste heat recovery and utilization, comprising a main body (1), characterized in that: A smoke outlet pipe (2) is provided on one side of the main body (1) of the equipment. A purification box (3) is provided through one end of the smoke outlet pipe (2). A protective cover (12) is provided at the lower end of the purification box (3). A power mechanism is provided at the lower end of the protective cover (12). A drive gear (14) is provided on the power mechanism. A cleaning mechanism is engaged on the other side of the drive gear (14). A suction mechanism is engaged on one side of the drive gear (14). A flue (4) is provided through one side of the purification box (3). A filter screen (5) is detachably connected to the other side of the purification box (3). An activated carbon purification plate (7) is detachably connected to one side of the purification box (3). A first rotating shaft (18) is provided on the cleaning mechanism. A cleaning plate (19) is fixedly connected to one end of the first rotating shaft (18). A brush (20) is provided on one side of the cleaning plate (19). The brush (20) abuts against the filter screen (5). A second rotating shaft (27) is provided on the suction mechanism. A fan blade (28) is fixedly connected to one end of the second rotating shaft (27). The fan blade (28) is correspondingly arranged with the flue (4).

2. The heat exchanger for waste heat recovery and utilization according to claim 1, characterized in that: The power mechanism includes a motor (13) fixedly installed inside the lower end of the protective cover (12). The output shaft of the motor (13) is fixedly connected to the middle of the lower end of the drive gear (14). The lower end of the protective cover (12) is provided with multiple ventilation holes at equal intervals.

3. The heat exchanger for waste heat recovery and utilization according to claim 1, characterized in that: The cleaning mechanism includes a large transmission gear (15) meshing on the other side of the drive gear (14), and a worm gear (16) rotatably connected to the other side of the purification box (3). The lower end of the worm gear (16) passes through the lower end of the purification box (3) and is fixedly connected to the upper middle part of the large transmission gear (15). A worm wheel (17) meshes on one side of the worm gear (16), and the worm wheel (17) is fixedly connected to the other end of the first rotating shaft (18).

4. A heat exchanger for waste heat recovery and utilization according to claim 1, characterized in that: The suction mechanism includes a small transmission gear (23) meshing with one side of the drive gear (14). A transmission rod (24) is rotatably connected to one side of the purification box (3). The lower end of the transmission rod (24) passes through the lower end of the purification box (3) and is fixedly connected to the middle of the upper end of the small transmission gear (23). A drive bevel gear (25) is fixedly sleeved in the middle of the transmission rod (24). A transmission bevel gear (26) meshes with one side of the upper end of the drive bevel gear (25). The transmission bevel gear (26) is fixedly connected to the other end of the second rotating shaft (27).

5. A heat exchanger for waste heat recovery and utilization according to claim 1, characterized in that: The first bearing (21) is rotatably sleeved on the first shaft (18). The first crossbar (22) is fixedly connected to both sides of the first bearing (21). The other ends of the two first crossbars (22) are respectively fixedly connected to the opposite inner walls of the purification box (3).

6. A heat exchanger for waste heat recovery and utilization according to claim 1, characterized in that: The second shaft (27) is rotatably sleeved with a second bearing (29), and the two sides of the second bearing (29) are fixedly connected with second crossbars (30). The other ends of the two second crossbars (30) are respectively fixedly connected to the opposite inner walls of the purification box (3).

7. A heat exchanger for waste heat recovery and utilization according to claim 1, characterized in that: Three first rollers (10) are evenly spaced on one side of the filter screen (5), and three second rollers (11) are evenly spaced on one side of the activated carbon purification plate (7). The two ends of the three first rollers (10) and the three second rollers (11) are respectively rotatably connected to the opposite inner walls of the purification box (3).

8. A heat exchanger for waste heat recovery and utilization according to claim 1, characterized in that: The upper end of the filter screen (5) passes through the upper end of the purification box (3) and is provided with a first connecting plate (6). The upper end of the activated carbon purification plate (7) passes through the upper end of the purification box (3) and is provided with a second connecting plate (8). The first connecting plate (6) and the second connecting plate (8) can be detachably installed on the upper end of the purification box (3). The upper ends of the first connecting plate (6) and the second connecting plate (8) are both provided with handles (9).

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