A waste heat recycling structure of a drying furnace

Abstract

The utility model discloses a kind of waste heat recycling structures of drying furnace, including drying furnace main body and waste heat utilization tank, the inside of waste heat utilization tank is equipped with heat-conducting heat exchange component, the export end and import end of heat-conducting heat exchange component are correspondingly equipped with waste heat flow guide pipe body.The utility model, waste heat is heat exchanged by heat-conducting heat exchange component, water source in waste heat utilization tank is heated, waste heat flow guide pipe body reflows waste heat flue gas to waste heat utilization tank, secondary heating is carried out to water source, waste heat utilization rate is high, first filtering component carries out first filtration, then by second filtering component secondary filtration is carried out, finally flows to waste heat utilization tank, carries out secondary heat exchange and water filtration cleaning, flue gas harmful substance filtration processing capacity is excellent, make device have secondary waste heat utilization capacity, heat exchange rate is high, utilization efficiency is excellent, and flue gas can be adsorbed filtration multiple times, environmental protection performance is good.

Description

Technical Field

[0001] This utility model relates to the field of waste heat utilization technology of drying ovens, and in particular to a structure for reusing waste heat from drying ovens. Background Technology

[0002] In industrial production, drying ovens are commonly used material drying equipment, widely applied in industries such as chemicals, building materials, and food. During operation, drying ovens generate large amounts of high-temperature flue gas carrying heat. Directly releasing this flue gas into the atmosphere not only wastes energy but may also have adverse environmental impacts. Waste heat recovery from drying ovens involves using specific technologies and structural designs to recover and reuse the heat contained in the high-temperature flue gas emitted from the oven, achieving the goals of energy conservation, reduced production costs, and reduced environmental pollution. This waste heat recovery method is of great significance for improving the energy efficiency of industrial production.

[0003] However, existing technologies for utilizing waste heat from drying ovens often employ only simple heat exchange methods. Common waste heat utilization devices typically involve installing heat exchange pipes along the flue gas emission path of the drying oven, allowing high-temperature flue gas to exchange heat with the medium requiring heating within the pipes. However, this structure has a limited heat exchange area, and the flow path and velocity of the flue gas within the pipes are difficult to optimize, resulting in insufficient heat exchange, low heat exchange rate, and a significant amount of heat wasted with the flue gas emission, failing to be effectively recovered and utilized. Furthermore, the waste heat utilization efficiency is insufficient, and the exhaust gas cannot effectively filter and adsorb harmful gases, requiring secondary filtration, leading to relatively poor environmental performance. Therefore, we propose a waste heat reuse structure for drying ovens to address these issues. Utility Model Content

[0004] In response to the problems raised, this utility model provides a structure for reusing waste heat from a drying oven to solve the aforementioned issues.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A structure for reusing waste heat from a drying oven includes a drying oven body and a waste heat utilization tank, wherein the waste heat utilization tank is provided with a heat conduction and heat exchange component.

[0007] The heat conduction and heat exchange component is provided with waste heat guiding pipes at its outlet and inlet ends. The two sets of waste heat guiding pipes pass through the waste heat utilization tank and are respectively connected to the main body of the drying furnace and the waste heat utilization tank. The middle part of the two waste heat guiding pipes is provided with a first filter component and a second filter component.

[0008] The waste heat recovery tank is equipped with an exhaust assembly at its top.

[0009] Preferably, the heat exchange component includes a heat exchange copper tube and heat-conducting fins. The heat exchange copper tube is installed inside the waste heat utilization tank, and the heat-conducting fins are installed at equal intervals inside the heat exchange copper tube. The two ends of the heat exchange copper tube are respectively connected to two waste heat guiding pipes.

[0010] Preferably, the waste heat recovery tank includes a main body and an inner isolation box. The inner isolation box divides the interior of the main body into a waste heat recovery chamber and a secondary filtration chamber. The secondary filtration chamber is located on the upper and lower sides of the waste heat recovery chamber. The heat conduction and heat exchange component is installed inside the inner isolation box and is located inside the waste heat recovery chamber. The interior of the inner isolation box is provided with multiple waste heat venting pipes, which connect the two secondary filtration chambers. The exhaust component is located on the top of the main body of the waste heat recovery tank and is connected to the secondary filtration chamber.

[0011] Preferably, the first filter assembly includes a filter box, a flue gas filter layer, a flue gas adsorption layer, and a first smoke outlet pipe. The filter box is connected and installed in the middle of the waste heat guiding pipe body. The flue gas filter layer and the flue gas adsorption layer are sequentially installed inside the filter box. The first smoke outlet pipe is connected and installed on the side of the filter box. Both waste heat guiding pipe bodies are equipped with high-temperature resistant fans.

[0012] Preferably, the second filter assembly includes a flue gas adsorption box, an outer adsorption core, and an inner adsorption core. Both ends of the flue gas adsorption box are connected to the waste heat guiding pipe. The outer adsorption core is installed inside the flue gas adsorption box, and the inner adsorption core is installed inside the outer adsorption core. Both the outer adsorption core and the inner adsorption core are cylindrical and connected to the bottom of the flue gas adsorption box.

[0013] Preferably, both the outer and inner adsorption cores are activated carbon adsorption cylinders, and both are fitted inside the flue gas adsorption box.

[0014] Preferably, the exhaust assembly includes an exhaust pipe and an exhaust cap, which are connected to the top of the waste heat recovery tank, and the exhaust cap is installed on the top of the exhaust pipe.

[0015] Preferably, the main body of the drying oven is connected in sequence by a waste heat guide pipe to a first filter assembly, a heat conduction and heat exchange assembly, a second filter assembly, a waste heat utilization tank, and an exhaust assembly. The waste heat utilization tank has a first drain outlet on its side and a second drain outlet at its bottom.

[0016] Preferably, the secondary filtration chamber at the bottom is provided with a guide air pipe, which is connected to the waste heat guide pipe body. Anti-backflow jet nozzles are provided at equal intervals on the top of the guide air pipe, and waterproof vent covers are provided on the top of the multiple waste heat venting pipes.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0018] 1. The waste heat recovery structure of this drying oven introduces the waste heat from the main body of the drying oven into the interior of the heat exchange component through the waste heat guide pipe. The heat exchange component then heats the water in the waste heat recovery tank, performing a primary waste heat recovery. Another waste heat guide pipe redirects the waste heat flue gas back into the waste heat recovery tank, where the high-temperature flue gas can reheat the water. This allows for two waste heat recovery processes, resulting in high waste heat utilization rate, good waste heat recovery effect, high heat exchange rate, and excellent utilization efficiency.

[0019] 2. The waste heat recovery structure of this drying oven performs a first filtration through the first filter component. After the waste heat flue gas from the heat conduction and heat exchange component is discharged through the waste heat guide pipe, it can be filtered a second time by the second filter component. Finally, it is guided into the waste heat recovery tank for a second heat exchange and water filtration and cleaning of particulate matter in the flue gas. Finally, it is discharged by the exhaust component, completing three stages of flue gas adsorption and filtration. The flue gas has excellent filtration capacity for harmful substances, allowing the device to adsorb and filter flue gas multiple times, resulting in good environmental performance. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the connection between the waste heat utilization tank and the waste heat diversion pipe in this utility model;

[0022] Figure 3 This is a first-view perspective sectional view of the present invention;

[0023] Figure 4 This is a perspective view showing the connection between the heat conduction and heat exchange component, the waste heat guiding pipe, and the first filter component in this utility model.

[0024] Figure 5 This is a three-dimensional cross-sectional view of the waste heat utilization tank in this utility model;

[0025] Figure 6 This is a three-dimensional cross-sectional view of the connection between the waste heat utilization tank and the first filter assembly in this utility model.

[0026] In the diagram: 1. Drying oven body; 2. Waste heat utilization tank; 21. Regenerator tank body; 22. Inner isolation box; 23. Waste heat recovery chamber; 24. Secondary filtration chamber; 25. Waste heat drainage pipe; 26. First drain outlet; 27. Second drain outlet; 28. Waterproof vent hood; 3. Heat conduction and heat exchange assembly; 31. Heat exchange copper pipe; 32. Heat conduction fins; 4. Waste heat guide pipe body; 41. High temperature resistant fan; 42. Guide air duct; 43. Anti-backflow jet nozzle; 5. First filter assembly; 51. Filter box; 52. Flue gas filter layer; 53. Flue gas adsorption layer; 54. First flue gas outlet pipe; 6. Second filter assembly; 61. Flue gas adsorption box; 62. Adsorption outer core; 63. Adsorption inner core; 7. Exhaust assembly; 71. Exhaust pipe; 72. Exhaust hood. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0029] Please see Figures 1-6 A structure for reusing waste heat from a drying oven includes a drying oven body 1 and a waste heat utilization tank 2, wherein a heat conduction and heat exchange component 3 is provided inside the waste heat utilization tank 2.

[0030] The heat conduction and heat exchange component 3 is provided with waste heat guide pipe body 4 at the outlet and inlet ends respectively. The two sets of waste heat guide pipe bodies 4 pass through the waste heat utilization tank 2 and are connected to the drying furnace body 1 and the waste heat utilization tank 2 respectively. The middle part of the two waste heat guide pipe bodies 4 is provided with a first filter component 5 and a second filter component 6 respectively.

[0031] The top of the waste heat recovery tank 2 is equipped with an exhaust assembly 7;

[0032] The beneficial effects of this scheme are as follows: The waste heat in the main body 1 of the drying oven is introduced into the interior of the heat exchange component 3 through the waste heat guide pipe 4. The heat exchange component 3 performs heat exchange to heat the water in the waste heat utilization tank 2, thus performing one waste heat utilization. Another waste heat guide pipe 4 guides the waste heat flue gas back into the waste heat utilization tank 2. The high-temperature flue gas can reheat the water in the waste heat utilization tank 2, thus performing two waste heat utilizations. The waste heat utilization rate is high. The first filter component 5 performs the first filtration. After the waste heat flue gas from the heat exchange component 3 is discharged through the waste heat guide pipe 4, it can be filtered again by the second filter component 6. Finally, it is guided into the waste heat utilization tank 2 for a second heat exchange and water filtration and cleaning of particulate matter in the flue gas. Finally, it is discharged by the exhaust component 7, completing three flue gas adsorption and filtration processes. The flue gas has excellent filtration and treatment capabilities for harmful substances, enabling the device to have secondary waste heat utilization capabilities, high heat exchange rate, excellent utilization efficiency, and multiple adsorption and filtration of flue gas, resulting in good environmental performance.

[0033] Furthermore, the heat exchange component 3 includes a heat exchange copper tube 31 and heat-conducting fins 32. The heat exchange copper tube 31 is installed inside the waste heat utilization tank 2, and the heat-conducting fins 32 are installed at equal intervals inside the heat exchange copper tube 31. The two ends of the heat exchange copper tube 31 are respectively connected to two waste heat guiding pipe bodies 4.

[0034] Specifically, when the hot flue gas flows into the heat exchange copper tube 31, the heat exchange copper tube 31 and the heat-conducting fins 32 conduct heat exchange. The heat exchange area is large, which improves the heat exchange efficiency and the waste heat utilization rate is high.

[0035] Furthermore, the waste heat utilization tank 2 includes a regenerating tank body 21 and an inner isolation box 22. The inner isolation box 22 divides the interior of the regenerating tank body 21 into a waste heat recovery chamber 23 and a secondary filtration chamber 24. The secondary filtration chamber 24 is located on the upper and lower sides of the waste heat recovery chamber 23. The heat conduction and heat exchange component 3 is installed inside the inner isolation box 22 and is located inside the waste heat recovery chamber 23. The interior of the inner isolation box 22 is provided with multiple waste heat venting pipes 25, which connect the two secondary filtration chambers 24. The exhaust component 7 is located on the top of the regenerating tank body 21 and is connected to the secondary filtration chamber 24.

[0036] Specifically, the inner isolation box 22 can divide the interior of the regenerating tank body 21 into a waste heat recovery chamber 23 and a secondary filtration chamber 24. The heat conduction and heat exchange component 3 is located in the waste heat recovery chamber 23 to utilize waste heat. The waste heat guide pipe 4 introduces the flue gas in the regenerating tank body 21, which can be heat exchanged and filtered by the water source in the secondary filtration chamber 24, completing water filtration and heat exchange guidance. The inner isolation box 22 is equipped with a waste heat venting pipe 25. After the waste heat is filtered and heat exchanged by water in the secondary filtration chamber 24 at the bottom, it is conducted to the secondary filtration chamber 24 at the top by the waste heat venting pipe 25 for secondary water filtration guidance. During the conduction by the waste heat venting pipe 25, the waste heat recovery chamber 23 is heated and filtered again. Together with the two secondary filtration chambers 24, the waste heat recovery chamber 23 is heat exchanged and conducted, resulting in good waste heat utilization.

[0037] Furthermore, the first filter assembly 5 includes a filter box 51, a flue gas filter layer 52, a flue gas adsorption layer 53, and a first smoke outlet pipe 54. The filter box 51 is connected and installed in the middle of the waste heat guiding pipe body 4. The flue gas filter layer 52 and the flue gas adsorption layer 53 are sequentially installed inside the filter box 51. The first smoke outlet pipe 54 is connected and installed on the side of the filter box 51. Both waste heat guiding pipe bodies 4 are equipped with high-temperature resistant fans 41.

[0038] Specifically, both sides of the filter box 51 are connected to the waste heat guide pipe body 4. When the waste heat flue gas is guided into the filter box 51, the harmful gases and particulate matter in the flue gas are adsorbed and filtered by the flue gas filter layer 52 and the flue gas adsorption layer 53 in sequence, and then the first smoke is discharged through the first smoke outlet pipe 54, and the filtration is stable.

[0039] Furthermore, the second filter assembly 6 includes a flue gas adsorption box 61, an outer adsorption core 62, and an inner adsorption core 63. Both ends of the flue gas adsorption box 61 are connected to the waste heat guide pipe body 4. The outer adsorption core 62 is installed inside the flue gas adsorption box 61, and the inner adsorption core 63 is installed inside the outer adsorption core 62. Both the outer adsorption core 62 and the inner adsorption core 63 are cylindrical and connected to the bottom of the flue gas adsorption box 61.

[0040] Specifically, the waste heat guide pipe 4 connects the upper and lower sides of the flue gas adsorption box 61. The high-temperature flue gas enters from the top of the flue gas adsorption box 61 and is filtered and adsorbed by the outer adsorption core 62 and the inner adsorption core 63 in sequence. Then, it is introduced into the waste heat utilization tank 2 by the waste heat guide pipe 4 for a third water cleaning and filtration. The filtration quality and convenience are excellent.

[0041] Furthermore, both the outer adsorption core 62 and the inner adsorption core 63 are activated carbon adsorption cylinders, and both the outer adsorption core 62 and the inner adsorption core 63 are fitted inside the flue gas adsorption box 61.

[0042] Specifically, both the outer adsorption core 62 and the inner adsorption core 63 are activated carbon adsorption cylinders, which have good adsorption and filtration capabilities for harmful particulate matter in flue gas. Both the outer adsorption core 62 and the inner adsorption core 63 are fitted into the flue gas adsorption box 61, making them convenient and stable to install and disassemble, and easy to use.

[0043] Furthermore, the exhaust assembly 7 includes an exhaust pipe 71 and an exhaust cap 72, which are connected to the top of the waste heat recovery tank 2, and the exhaust cap 72 is installed on the top of the exhaust pipe 71.

[0044] Specifically, after the flue gas completes adsorption and heat exchange, it can be discharged through the exhaust pipe 71 at the top of the waste heat utilization tank 2 and filtered by the exhaust cap 72, resulting in stable discharge.

[0045] Furthermore, the main body 1 of the drying oven is connected in sequence by the waste heat guide pipe 4 to the first filter assembly 5, the heat conduction and heat exchange assembly 3, the second filter assembly 6, the waste heat utilization tank 2 and the exhaust assembly 7. The side of the waste heat utilization tank 2 is provided with a first drain outlet 26, and the bottom of the waste heat utilization tank 2 is provided with a second drain outlet 27.

[0046] Specifically, the waste heat is guided by the main body of the drying furnace 1 through the first filter assembly 5, the heat conduction and heat exchange assembly 3, the second filter assembly 6, and the waste heat utilization tank 2 in sequence, and finally discharged by the exhaust assembly 7. The operation is stable. The first drain port 26 can discharge or introduce water in the waste heat recovery chamber 23, and the second drain port 27 can discharge or introduce water in the secondary filter chamber 24, which is convenient to use.

[0047] Furthermore, the bottom secondary filtration chamber 24 is provided with a guide air pipe 42, which is connected to the waste heat guide pipe body 4. Anti-backflow jet nozzles 43 are provided at equal intervals on the top of the guide air pipe 42, and waterproof air outlet covers 28 are provided on the top of the multiple waste heat venting pipes 25.

[0048] Specifically, the bottom of the waste heat diversion pipe body 4 is provided with a diversion air pipe 42, and the top of the diversion air pipe 42 is provided with anti-backflow jet nozzles 43 at equal intervals. After the flue gas enters the diversion air pipe 42, it is discharged by multiple anti-backflow jet nozzles 43. The anti-backflow jet nozzles 43 play the role of flue gas discharge and waterproofing, preventing water backflow. The anti-backflow jet nozzles 43 can cut the flue gas into fine bubbles, which improves the quality of flue gas water filtration and cleaning, and has excellent filtration and environmental protection capabilities.

[0049] The top of the multiple waste heat venting pipes 25 is equipped with a waterproof vent 28. When the flue gas is introduced into the secondary filtration chamber 24 at the top through the waste heat venting pipes 25, the water source in the secondary filtration chamber 24 at the top is not easy to flow back. The waterproof vent 28 plays the role of waterproofing and flue gas diversion, which is practical. In addition, the water source in the waste heat recovery chamber 23 is not easily contaminated by the flue gas, while the secondary filtration chamber 24 can filter the flue gas with water, which has good waste heat utilization and flue gas particle filtration and adsorption capabilities.

[0050] How to use and how to work this device:

[0051] By providing a waste heat utilization tank 2 on the side of the main body 1 of the drying oven, and providing a heat conduction and heat exchange component 3 inside the waste heat utilization tank 2, the waste heat in the main body 1 of the drying oven can be introduced into the heat conduction and heat exchange component 3 through the waste heat guide pipe 4. The heat conduction and heat exchange component 3 will perform heat exchange to heat the water in the waste heat utilization tank 2, thus performing waste heat utilization once. Then, the waste heat flue gas is guided back into the waste heat utilization tank 2 through another waste heat guide pipe 4. The high-temperature flue gas can heat the water in the waste heat utilization tank 2 a second time. Finally, the flue gas is discharged by the exhaust component 7. This allows for two waste heat utilizations, resulting in a high waste heat utilization rate and good waste heat utilization effect.

[0052] The heat exchange component 3 includes a heat exchange copper tube 31 and heat-conducting fins 32. When the high-temperature flue gas flows into the heat exchange copper tube 31, heat exchange occurs between the heat exchange copper tube 31 and the heat-conducting fins 32. The heat exchange area is large, which improves the heat exchange efficiency. The waste heat utilization tank 2 includes a regenerating tank body 21 and an inner isolation box 22. The inner isolation box 22 can divide the interior of the regenerating tank body 21 into a waste heat recovery chamber 23 and a secondary filtration chamber 24. The heat exchange component 3 is located in the waste heat recovery chamber 23 to utilize waste heat. The waste heat guide pipe 4 introduces the flue gas into the regenerating tank body 21, which can be heat-exchanged and filtered by the water source in the secondary filtration chamber 24, completing water filtration and heat exchange guidance. The inner isolation box 22 is equipped with a waste heat diversion pipe 25. When waste heat enters from the secondary filtration chamber 24 at the bottom, it is diverted to the waste heat recovery chamber. After water filtration and heat exchange, the waste heat is conducted to the secondary filtration chamber 24 at the top via the waste heat venting pipe 25 for secondary water filtration and diversion. During the conduction of the waste heat venting pipe 25, the waste heat recovery chamber 23 is heated and filtered for the second time. Together with the two secondary filtration chambers 24, the waste heat recovery chamber 23 is heat exchanged and conducted, resulting in good waste heat utilization. The top of the multiple waste heat venting pipes 25 is equipped with a waterproof vent 28. When the flue gas is introduced into the secondary filtration chamber 24 at the top via the waste heat venting pipe 25, the water source in the secondary filtration chamber 24 at the top is not prone to backflow. The waterproof vent 28 serves the functions of waterproofing and flue gas diversion and diversion, which is practical. Moreover, the water source in the waste heat recovery chamber 23 is not easily contaminated by the flue gas, while the secondary filtration chamber 24 can perform water filtration on the flue gas, resulting in good waste heat utilization and flue gas particle filtration and adsorption capabilities.

[0053] During the process of guiding the waste heat of the main body 1 of the drying oven to the heat exchange component 3, the first filter component 5 performs the first filtration. After the waste heat flue gas of the heat exchange component 3 is discharged from the waste heat guide pipe 4, it can be filtered again by the second filter component 6. Finally, it is guided to the waste heat utilization tank 2 for secondary heat exchange and water filtration and cleaning of particulate matter in the flue gas. Finally, it is discharged by the exhaust component 7. It can complete the three-stage flue gas adsorption and filtration while completing the waste heat utilization, and has excellent flue gas harmful substance filtration and treatment capabilities.

[0054] The first filter assembly 5 includes a filter box 51, a flue gas filter layer 52, a flue gas adsorption layer 53, and a first smoke outlet pipe 54. Both sides of the filter box 51 are connected to the waste heat guide pipe body 4. When the waste heat flue gas is guided into the filter box 51, the harmful gases and particulate matter in the flue gas are adsorbed and filtered by the flue gas filter layer 52 and the flue gas adsorption layer 53 in sequence, and then the first smoke outlet pipe 54 is used for the first smoke discharge. The second filter assembly 6 includes a flue gas adsorption box 61, an adsorption outer core 62, and an adsorption inner core 63. The waste heat guide pipe body 4 connects the upper and lower sides of the flue gas adsorption box 61. The high-heat flue gas enters from the top of the flue gas adsorption box 61, and the harmful substances in the flue gas are filtered and adsorbed by the adsorption outer core 62 and the adsorption inner core 63 in sequence. Then the waste heat guide pipe body 4 is introduced into the waste heat utilization tank 2 for the third water cleaning filtration. The filtration quality and convenience are excellent.

[0055] Both waste heat guiding pipes 4 are equipped with high-temperature resistant fans 41, which serve to draw and guide flue gas. The flue gas flow is stable. When the flue gas in the waste heat guiding pipe 4 enters the waste heat utilization tank 2, the flue gas output is stable and not prone to clogging. The bottom of the waste heat guiding pipe 4 is equipped with a guiding ventilation pipe 42, and the top of the guiding ventilation pipe 42 is equipped with anti-backflow jet nozzles 43 at equal intervals. After the flue gas enters the guiding ventilation pipe 42, it is discharged by multiple anti-backflow jet nozzles 43. The anti-backflow jet nozzles 43 serve to discharge the flue gas and prevent water backflow. The anti-backflow jet nozzles 43 can cut the flue gas into fine bubbles, which improves the quality of flue gas water filtration and cleaning, and has excellent filtration and environmental protection capabilities. This enables the device to have secondary waste heat utilization capabilities, high heat exchange rate, excellent utilization efficiency, and multiple adsorption and filtration of flue gas, resulting in good environmental performance.

[0056] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A structure for reusing waste heat from a drying oven, comprising a drying oven body (1) and a waste heat utilization tank (2), characterized in that: The waste heat utilization tank (2) is equipped with a heat conduction and heat exchange component (3) inside; The heat conduction and heat exchange component (3) is provided with waste heat guide pipes (4) at its outlet and inlet ends respectively. The two sets of waste heat guide pipes (4) pass through the waste heat utilization tank (2) and are connected to the main body of the drying furnace (1) and the waste heat utilization tank (2) respectively. The middle part of the two waste heat guide pipes (4) is provided with a first filter component (5) and a second filter component (6) respectively. The waste heat utilization tank (2) is equipped with an exhaust assembly (7) on its top.

2. The structure for reusing waste heat from a drying oven according to claim 1, characterized in that: The heat exchange component (3) includes a heat exchange copper tube (31) and heat-conducting fins (32). The heat exchange copper tube (31) is installed inside the waste heat utilization tank (2). The heat-conducting fins (32) are installed at equal intervals inside the heat exchange copper tube (31). The two ends of the heat exchange copper tube (31) are respectively connected to two waste heat guiding pipes (4).

3. The structure for reusing waste heat from a drying oven according to claim 1, characterized in that: The waste heat utilization tank (2) includes a heat recovery tank body (21) and an inner isolation box (22). The inner isolation box (22) divides the interior of the heat recovery tank body (21) into a waste heat recovery chamber (23) and a secondary filtration chamber (24). The secondary filtration chamber (24) is located on the upper and lower sides of the waste heat recovery chamber (23). The heat conduction and heat exchange component (3) is installed inside the inner isolation box (22). The heat conduction and heat exchange component (3) is located inside the waste heat recovery chamber (23). The interior of the inner isolation box (22) is provided with multiple waste heat venting pipes (25). The multiple waste heat venting pipes (25) connect the two secondary filtration chambers (24). The exhaust component (7) is set on the top of the heat recovery tank body (21). The exhaust component (7) is connected to the secondary filtration chamber (24).

4. The structure for reusing waste heat from a drying oven according to claim 1, characterized in that: The first filter assembly (5) includes a filter box (51), a flue gas filter layer (52), a flue gas adsorption layer (53), and a first smoke outlet pipe (54). The filter box (51) is connected and installed in the middle of the waste heat guiding pipe body (4). The flue gas filter layer (52) and the flue gas adsorption layer (53) are installed in sequence inside the filter box (51). The first smoke outlet pipe (54) is connected and installed on the side of the filter box (51). Both waste heat guiding pipe bodies (4) are equipped with high-temperature resistant fans (41).

5. The structure for reusing waste heat from a drying oven according to claim 1, characterized in that: The second filter assembly (6) includes a flue gas adsorption box (61), an outer adsorption core (62), and an inner adsorption core (63). Both ends of the flue gas adsorption box (61) are connected to the waste heat guide pipe (4). The outer adsorption core (62) is installed inside the flue gas adsorption box (61), and the inner adsorption core (63) is installed inside the outer adsorption core (62). Both the outer adsorption core (62) and the inner adsorption core (63) are cylindrical and connected to the bottom of the flue gas adsorption box (61).

6. The structure for reusing waste heat from a drying oven according to claim 5, characterized in that: The outer adsorption core (62) and the inner adsorption core (63) are both activated carbon adsorption cylinders, and the outer adsorption core (62) and the inner adsorption core (63) are both fitted and installed inside the flue gas adsorption box (61).

7. The structure for reusing waste heat from a drying oven according to claim 1, characterized in that: The exhaust assembly (7) includes an exhaust pipe (71) and an exhaust cap (72), which are connected to the top of the waste heat utilization tank (2), and the exhaust cap (72) is installed on the top of the exhaust pipe (71).

8. The structure for reusing waste heat from a drying oven according to claim 1, characterized in that: The main body (1) of the drying oven is connected in sequence by the waste heat guide pipe (4) to the first filter assembly (5), the heat conduction and heat exchange assembly (3), the second filter assembly (6), the waste heat utilization tank (2) and the exhaust assembly (7). The waste heat utilization tank (2) has a first drain outlet (26) on its side and a second drain outlet (27) at its bottom.

9. The structure for reusing waste heat from a drying oven according to claim 3, characterized in that: The secondary filtration chamber (24) at the bottom is provided with a guide air pipe (42), which is connected to the waste heat guide pipe body (4). Anti-backflow jet nozzles (43) are provided at equal intervals on the top of the guide air pipe (42), and waterproof vent covers (28) are provided on the top of the multiple waste heat venting pipes (25).

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