Heat exchange mechanism for reducing inlet air temperature of cooling section of tunnel furnace

Abstract

The utility model relates to the technical field of tunnel furnace cooling sections, and discloses a heat exchange mechanism for reducing inlet air temperature of a tunnel furnace cooling section, which comprises a conveying belt, a cooling bin is fixedly connected to the upper surface of the conveying belt, a filtering bin is fixedly connected to the upper surface of the cooling bin, and a filtering assembly is arranged in the filtering bin. One end of the filtering bin is fixedly connected with a fan, one side of the outer wall of the filtering bin is fixedly connected with an air supply pipe, the inner wall of the cooling bin is fixedly connected with a flow guide plate, the interior of the flow guide plate is fixedly connected with an annular circulating conveying pipe, and one end of the annular circulating conveying pipe is fixedly connected with a cooling water tank. According to the cooling section of the tunnel furnace, fan driving is combined with the cooling water atomization spraying technology, air and atomized water are fully combined, the quality of dust in the air is effectively improved, the filtering efficiency is improved, then through secondary cooling of circulating cooling water, the efficient heat exchange and cooling effects are achieved, and the overall cooling efficiency of the cooling section of the tunnel furnace is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel furnace cooling section, and in particular to a heat exchange mechanism for reducing the inlet air temperature of the tunnel furnace cooling section. Background Technology

[0002] Tunnel furnaces, as high-temperature industrial equipment, are widely used in processes such as metal heat treatment and ceramic firing. Their cooling sections play a crucial role in ensuring product quality and process stability. Within the cooling section of a tunnel furnace, air temperature control and heat exchange efficiency directly affect the cooling effect, thus impacting product surface quality and production efficiency. Therefore, efficient heat exchange devices and a good temperature control system are essential for the performance of tunnel furnaces. With technological advancements, more and more heat exchange technologies have been proposed and have achieved significant results in practical applications. Among these, air cooling and water cooling technologies are frequently used to improve the heat exchange efficiency of the tunnel furnace cooling section.

[0003] Currently, common technologies in the cooling sections of tunnel furnaces include using fans to introduce external air into the cooling section, utilizing heat exchange between the air and the hot workpiece to reduce its temperature. Many existing technologies rely on directly blowing air into the cooling section to absorb heat, typically using large fans to rapidly deliver air into the furnace body. However, this method often suffers from uneven airflow and low cooling efficiency. Furthermore, to enhance the air cooling effect, some technologies incorporate cooling water spray systems, which use water atomization spraying technology to introduce tiny water droplets into the cooling air, further improving the air's heat exchange capacity.

[0004] In existing heat exchange mechanisms, when outside air enters the cooling section, dust particles in the air often enter the filtration system along with it, resulting in low filtration efficiency and difficulty in effectively removing airborne particulate matter, thus affecting cooling efficiency. Furthermore, air humidity control is also a significant issue; moisture in the air easily combines with dust to form humid air, further hindering heat exchange during the cooling process. Although some technologies mitigate these problems by incorporating filters or cooling devices, they still cannot effectively improve airborne dust filtration efficiency and humidity control. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace. It aims to improve the existing heat exchange mechanism, which has difficulty in effectively removing particulate matter from the air, thus affecting the cooling efficiency, and also has poor heat exchange effect during the cooling process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace, comprising a conveyor belt, a cooling chamber fixedly connected to the upper surface of the conveyor belt, a filter chamber fixedly connected to the upper surface of the cooling chamber, a filter assembly disposed inside the filter chamber, a fan fixedly connected to one end of the filter chamber, an air supply pipe fixedly connected to one side of the outer wall of the filter chamber, a guide plate fixedly connected to the inner wall of the cooling chamber, an annular circulating conveying pipe fixedly connected inside the guide plate, and a cooling water tank fixedly connected to one end of the annular circulating conveying pipe;

[0007] The filter assembly includes a filter plate that is slidably connected inside the filter chamber. A circulating cooling water pipe is fixedly connected to the inner wall of the filter chamber. An atomizing nozzle is fixedly connected inside the circulating cooling water pipe, and a cooling water delivery pipe is fixedly connected to the outer wall of the circulating cooling water pipe.

[0008] Furthermore, a handle is fixedly connected to the outer wall of the filter plate, a rotating sleeve is rotatably connected to the inside of the filter chamber, a locking block is fixedly connected to the outer wall of the rotating sleeve, and a reset component is provided inside the filter chamber.

[0009] Furthermore, the reset assembly includes a fixed shaft and a torsion spring. Both ends of the fixed shaft are fixedly connected to the inside of the filter chamber, and the torsion spring is sleeved on the outer wall of the fixed shaft.

[0010] Furthermore, one end of the torsion spring is fixedly connected to the inside of the rotating sleeve, and the other end of the torsion spring is fixedly connected to the inside of the filter chamber.

[0011] Furthermore, the inner part of the rotating sleeve is rotatably connected to the outer wall of the fixed shaft, and the outer wall of the locking block is in contact with the filter plate.

[0012] Furthermore, the middle part of the annular circulating conveying pipe is arranged in a serpentine shape around the outer wall of the air delivery pipe for cooling the air.

[0013] Furthermore, the fan is located at one end of the air supply pipe, and the fan is used to drive external air to be delivered into the interior of the air supply pipe.

[0014] Furthermore, the bottom of the air delivery pipe is disposed inside the guide plate, which is used to guide the airflow.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, external air is driven into the filter chamber by a fan. During the air transport process, cooling water atomization spraying technology is combined to fully combine the air and atomized water, effectively improving the dust quality in the air and enhancing the filtration efficiency. At the same time, the filter plate is equipped with a dehumidifying sponge, which can further reduce the air humidity. After multiple treatments, the air will be cooled a second time by circulating cooling water after entering the air supply pipe, thereby achieving efficient heat exchange and cooling effects and significantly improving the overall cooling efficiency of the tunnel furnace cooling section.

[0017] 2. In this utility model, by setting a rotatable locking block and a spring limiting mechanism, the user only needs to pull the locking block to rotate it around the fixed axis to release the limiting state of the filter plate, making it easy to pull the filter plate out of the filter chamber for cleaning or replacement by using the handle. After maintenance, the filter plate only needs to be reset and automatically locked by the spring's rebound force. The entire disassembly and assembly process is simple and quick, greatly improving the convenience of daily maintenance and service life of the equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace, as proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the cooling chamber of the heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace, as proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of one side of the filter chamber of the heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace, as proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the other side of the internal structure of the filter chamber of the heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace, as proposed in this utility model.

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0023] Legend:

[0024] 1. Conveyor belt; 2. Cooling chamber; 3. Filter chamber; 4. Fan; 5. Circulating cooling water pipe; 6. Atomizing nozzle; 7. Filter plate; 8. Cooling water delivery pipe; 9. Cooling water tank; 10. Air supply pipe; 11. Guide plate; 12. Annular circulating delivery pipe; 13. Handle; 14. Clamping block; 15. Fixed shaft; 16. Rotating sleeve; 17. Torsion spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 - Figure 3 An embodiment of this utility model provides a heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace, comprising a conveyor belt 1, a cooling chamber 2 fixedly connected to the upper surface of the conveyor belt 1, a filter chamber 3 fixedly connected to the upper surface of the cooling chamber 2, which accommodates a filter plate 7 and performs preliminary air purification to ensure the air quality of the subsequent cooling process, a filter assembly is provided inside the filter chamber 3, a fan 4 is fixedly connected to one end of the filter chamber 3, an air supply pipe 10 is fixedly connected to one side of the outer wall of the filter chamber 3, a guide plate 11 is fixedly connected to the inner wall of the cooling chamber 2, an annular circulation conveying pipe 12 is fixedly connected inside the guide plate 11, and a cooling water tank 9, the main container for storing cooling water, is fixedly connected to one end of the annular circulation conveying pipe 12.

[0027] The filter assembly includes a filter plate 7, the core component for air purification. It contains a dehumidifying sponge structure to efficiently filter and dehumidify dust and moisture in the air. The filter plate 7 is slidably connected to the inside of the filter chamber 3. A circulating cooling water pipe 5 is fixedly connected to the inner wall of the filter chamber 3 to receive cooling water from the cooling water tank 9. The water circulates inside to supply water to the atomizing nozzle 6, achieving primary cooling and dust removal. The atomizing nozzle 6 is fixedly connected inside the circulating cooling water pipe 5 to atomize the cooling water into fine water droplets, which are fully mixed with the air. This causes the dust to absorb moisture and become heavier, making it easier for the filter plate 7 to trap it. A cooling water delivery pipe 8 is fixedly connected to the outer wall of the circulating cooling water pipe 5.

[0028] Specifically, external air is driven by the fan 4 into the filter chamber 3, which is equipped with filter plates 7. During the air intake process, cooling water from the cooling water tank 9 is transported through the cooling water delivery pipe 8 to the annularly arranged circulating cooling water pipe 5, and then atomized and discharged by the atomizing nozzle 6. This mixture thoroughly mixes with the air supplied by the fan 4, causing the dust carried in the air to be enveloped by the atomized water, significantly increasing the mass and volume of the dust in the air, making it easier for the filter plates 7 to trap it. The filter plates 7 are equipped with a dehumidifying sponge component with strong adsorption capacity, which can further dehumidify the air. Dehumidification also helps to improve the cleanliness and dryness of the air. After the air passes through the above-mentioned primary purification and dehumidification treatment, it continues to be transported through the air supply pipe 10. The outer wall of the air supply pipe 10 is covered by an annular circulating supply pipe 12. Cooling water circulates in the pipe, forming a secondary cooling of the air inside the air supply pipe 10. The whole process realizes a multi-stage cooling and heat exchange process from atomization dust reduction, dehumidification and purification to heat exchange on the outer wall, effectively reducing the air temperature entering the cooling section of the tunnel furnace, improving cooling efficiency and heat exchange capacity, and meeting the process requirements of stable low-temperature air intake in continuous production of the tunnel furnace.

[0029] Reference Figure 1 , Figure 4 and Figure 5 A handle 13 is fixedly connected to the outer wall of the filter plate 7. A rotating sleeve 16 is rotatably connected inside the filter chamber 3. A locking block 14 is fixedly connected to the outer wall of the rotating sleeve 16. This locking block, in conjunction with a torsion spring 17 and a fixed shaft 15, is used to fix the filter plate 7 and prevent it from loosening or falling off during operation. A reset assembly is provided inside the filter chamber 3. The reset assembly includes the fixed shaft 15, the torsion spring 17, and the rotation fulcrum of the locking block 14, supporting the locking block 14 to perform opening or locking operations. Both ends of the fixed shaft 15 are fixedly connected to the inside of the filter chamber 3. The torsion spring 17 is sleeved on the outer wall of the fixed shaft 15 and works with the locking block 14 to provide the elastic force required for the locking block 14 to reset. The locking block 14 can automatically rotate back to the limit state after being released. One end of the torsion spring 17 is fixedly connected to the inside of the rotating sleeve 16, and the other end of the torsion spring 17 is fixedly connected to the inside of the filter chamber 3. The inside of the rotating sleeve 16 is rotatably connected to the outer wall of the fixed shaft 15. The outer wall of the locking block 14 is in contact with the filter plate 7. The middle part of the annular circulation conveying pipe 12 is sleeved in an annular snake shape on the outer wall of the air supply pipe 10 for cooling the air. The fan 4 is set at one end of the air supply pipe 10 and is used to drive the external air to the inside of the air supply pipe 10. The bottom of the air supply pipe 10 is set inside the guide plate 11 and the guide plate 11 is used to guide the air.

[0030] Specifically, the filter plate 7 is installed inside the filter chamber 3. A resetting locking mechanism is formed by a rotating locking block 14, a limiting fixed shaft 15, and a torsion spring 17. During use, when the filter plate 7 has a large amount of accumulated dust or its adsorption effect decreases, the operator only needs to pull the locking block 14 to rotate it around the fixed shaft 15, causing the torsion spring 17 to generate torque until the locking block 14 completely disengages from the outer wall of the filter plate 7. Then, the filter plate 7 can be pulled out of the filter chamber 3 using the handle 13 on it. This structure greatly simplifies the cumbersome operations of screw fixing in traditional disassembly and assembly processes, improving the efficiency of cleaning and replacement. After the filter plate 7 is cleaned or replaced, it only needs to be reinserted into its original position. By releasing the locking block 14, it automatically rotates and re-locks into the outer wall of the filter plate 7 under the rebound force of the torsion spring 17, achieving limit reset. The entire process is simple and quick, requiring no professional tools, effectively reducing equipment maintenance cycles and labor costs, extending equipment lifespan, and improving the overall stability and sustainability of the tunnel furnace operation.

[0031] Working principle: When a heat exchange mechanism is needed to reduce the inlet air temperature of the tunnel furnace cooling section, the fan 4 is driven to send external air into the filter chamber 3. At this time, the cooling water in the cooling water tank 9 is transported to the circulating cooling water pipe 5 through the cooling water conveying pipe 8. Then, the air is atomized and discharged through the atomizing nozzle 6, so that the air and atomized water are combined, thereby increasing the dust mass in the air, which can be better filtered by the filter plate 7. In addition, the filter plate 7 is also equipped with a dehumidifying sponge to further dehumidify the air. The filtered air is transported through the air supply pipe 10, and then the cooling water is transported through the annular circulating conveying pipe 12, so that the cooling water circulates on the outer wall of the air supply pipe 10 to further cool the air and achieve efficient cooling and heat exchange.

[0032] In addition, after prolonged use, the locking block 14 is pulled to rotate around the fixed shaft 15, and the torsion spring 17 is twisted at the same time. When the locking block 14 is completely separated from the outer wall of the filter plate 7, the filter plate 7 can be pulled out of the filter chamber 3 for cleaning by the handle 13. During installation, the filter plate 7 is simply put back in its original position, and then the rotation of the torsion spring 17 drives the locking block 14 to reset and limit the filter plate 7 again.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat exchange mechanism for reducing the inlet air temperature of a tunnel furnace cooling section, comprising a conveyor belt (1), characterized in that: A cooling chamber (2) is fixedly connected to the upper surface of the conveyor belt (1), and a filter chamber (3) is fixedly connected to the upper surface of the cooling chamber (2). A filter assembly is provided inside the filter chamber (3). A fan (4) is fixedly connected to one end of the filter chamber (3). An air supply pipe (10) is fixedly connected to one side of the outer wall of the filter chamber (3). A guide plate (11) is fixedly connected to the inner wall of the cooling chamber (2). An annular circulation conveying pipe (12) is fixedly connected inside the guide plate (11). A cooling water tank (9) is fixedly connected to one end of the annular circulation conveying pipe (12). The filter assembly includes a filter plate (7), which is slidably connected inside the filter chamber (3). A circulating cooling water pipe (5) is fixedly connected to the inner wall of the filter chamber (3). An atomizing nozzle (6) is fixedly connected inside the circulating cooling water pipe (5). A cooling water delivery pipe (8) is fixedly connected to the outer wall of the circulating cooling water pipe (5).

2. The heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace according to claim 1, characterized in that: A handle (13) is fixedly connected to the outer wall of the filter plate (7), a rotating sleeve (16) is rotatably connected to the inside of the filter chamber (3), a locking block (14) is fixedly connected to the outer wall of the rotating sleeve (16), and a reset component is provided inside the filter chamber (3).

3. The heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace according to claim 2, characterized in that: The reset assembly includes a fixed shaft (15) and a torsion spring (17). Both ends of the fixed shaft (15) are fixedly connected to the inside of the filter chamber (3), and the torsion spring (17) is sleeved on the outer wall of the fixed shaft (15).

4. The heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace according to claim 3, characterized in that: One end of the torsion spring (17) is fixedly connected to the inside of the rotating sleeve (16), and the other end of the torsion spring (17) is fixedly connected to the inside of the filter chamber (3).

5. The heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace according to claim 3, characterized in that: The inside of the rotating sleeve (16) is rotatably connected to the outer wall of the fixed shaft (15), and the outer wall of the locking block (14) is in contact with the filter plate (7).

6. The heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace according to claim 1, characterized in that: The annular circulating conveying pipe (12) is arranged in a serpentine shape around the outer wall of the air supply pipe (10) to cool the air.

7. The heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace according to claim 1, characterized in that: The fan (4) is located at one end of the air supply pipe (10), and the fan (4) is used to drive external air to be delivered into the air supply pipe (10).

8. The heat exchange mechanism for reducing the inlet air temperature of the cooling section of a tunnel furnace according to claim 1, characterized in that: The bottom of the air supply pipe (10) is located inside the guide plate (11), which is used to guide the air.

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