Coating line waste heat recovery device

Abstract

The utility model relates to the technical field of coating line waste heat recovery devices, and discloses a coating line waste heat recovery device which comprises a heat exchange box, a servo motor is fixedly connected to the top of the heat exchange box, an air inlet pipe and an air outlet pipe are arranged on the two sides of the heat exchange box respectively, a fan is fixedly connected to the interior of the air outlet pipe, and the fan is fixedly connected to the top of the heat exchange box. A brush cleaning structure with a rotary driving mechanism and a sliding block cleaning structure are arranged in the heat exchange box, synchronous cleaning of a filter plate and a heat exchange finned tube in the equipment operation process is achieved, impurity accumulation is effectively prevented, the heat exchange efficiency is improved, a fan is arranged at an air outlet, it is ensured that airflow stably flows through a heat exchange area, and the heat exchange efficiency is improved. The reverse blowing pipe and the impurity outlet pipe are arranged, directional blowing and concentrated discharging of filtered residual impurities can be achieved, the maintenance frequency is reduced, the service life of equipment is prolonged, in addition, the internal structure improves the gas disturbance degree through the design of flow guiding, sliding grooves, vent holes and the like, the contact efficiency of gas and a heat exchange face is enhanced, and the service life is prolonged. And the recycling efficiency of the high-temperature tail gas of the coating line is integrally improved.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat recovery devices for coating lines, specifically a waste heat recovery device for coating lines. Background Technology

[0002] During the high-temperature processes such as spraying and curing, the coating line will emit a large amount of high-temperature exhaust gas. This exhaust gas contains usable heat energy, but if it is directly emitted, it will not only waste energy, but may also pollute the environment.

[0003] Existing waste heat recovery devices are mostly single static structures that cannot automatically clean internal dust during operation. This results in severe dust accumulation on the surface of heat exchange fins and filter plates, affecting heat exchange efficiency and increasing maintenance frequency. At the same time, there is a lack of effective secondary cleaning and impurity discharge structures for tiny impurities that are not completely removed during filtration, which further restricts the stability and service life of the system.

[0004] Therefore, it is necessary to design a waste heat recovery device for the coating line to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a waste heat recovery device for a coating line, which solves the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery device for a coating line, comprising a heat exchange box, a servo motor fixedly connected to the top of the heat exchange box, an air inlet pipe and an air outlet pipe respectively opened on both sides of the heat exchange box, a fan fixedly connected inside the air outlet pipe, and a first rotating shaft fixedly connected to the output shaft of the servo motor, a fixed plate fixedly connected to the top of the inner cavity of the heat exchange box, and a second rotating shaft rotatably inserted into the fixed plate, and bevel gears fixedly sleeved on the outer surfaces of both the second rotating shaft and the first rotating shaft, the two bevel gears meshing, a sliding block slidably engaging inside the heat exchange box, a rotating disk fixedly connected to the bottom end of the bevel gear, and a pin fixedly connected to the bottom of the rotating disk, the pin sliding mechanism being inserted into the top of the sliding block, multiple heat exchange fins installed inside the heat exchange box, and a first connecting pipe and a second connecting pipe respectively connecting the two ends of the multiple heat exchange fins, and multiple cleaning bristles fixedly connected to the bottom of the sliding block, and a cleaning mechanism provided inside the air inlet pipe.

[0007] Preferably, a backflush pipe is fixedly inserted into the top of the heat exchange box, and the backflush pipe is L-shaped. The horizontal end of the backflush pipe is located on the side of the filter plate away from the rotating block, and a first piston is inserted into the top of the backflush pipe. The cleaning mechanism includes a rotating block, a filter plate is fixedly connected inside the air inlet pipe, and one end of the second rotating shaft passes through the interior of the filter plate. The rotating block is fixedly connected to one end of the second rotating shaft, and multiple bristles are fixedly connected to the outer surface of one side of the filter plate on the rotating block.

[0008] Preferably, the top of the sliding block is provided with a groove, the bottom end of the insertion post is slidably inserted into the inside of the groove, and the outer surface of the insertion post is in contact with the inner wall of the groove. Both ends of the sliding block are fixedly connected with insertion blocks, and both sides of the inner cavity of the heat exchange box are provided with insertion grooves, and the two insertion blocks are slidably inserted into the two insertion grooves respectively.

[0009] Preferably, the outer surface of the rotating disk has two symmetrical vent holes, and the two vent holes are located on both sides of the first rotating shaft.

[0010] Preferably, one end of the air inlet pipe protrudes outside the heat exchange box, and the other end of the air inlet pipe is inserted into the inside of the heat exchange box. The end of the air inlet pipe inside the heat exchange box is located above the rotating disk, and the end of the air inlet pipe inside the heat exchange box is located on one side of the fixed plate.

[0011] Preferably, the bottom of the heat exchange box is connected to a sludge outlet pipe, the bottom end of the sludge outlet pipe is connected to a sludge box, and a sludge discharge port is opened on one side of the sludge discharge port, and a second piston is provided on one side of the sludge discharge port.

[0012] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0013] This invention achieves simultaneous cleaning of the filter plate and heat exchange fins during equipment operation by incorporating a brush cleaning structure with a rotating drive mechanism and a sliding block cleaning structure inside the heat exchange box. This effectively prevents impurity accumulation and improves heat exchange efficiency. A fan is installed at the air outlet to ensure stable airflow through the heat exchange area. The backflush pipe and impurity discharge pipe structures enable directional purging and centralized discharge of filtered residual impurities, reducing maintenance frequency and extending equipment life. Furthermore, the internal structure improves gas turbulence through the design of flow guides, chutes, and vents, enhancing the contact efficiency between the gas and the heat exchange surface, thus improving the overall efficiency of high-temperature exhaust gas recovery and utilization in the coating line. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2This is an exploded view of the heat exchanger box structure of this utility model;

[0016] Figure 3 This is an exploded view of the air inlet pipe structure of this utility model;

[0017] In the diagram: 1. Heat exchanger box; 2. Impurity box; 3. Impurity outlet pipe; 4. Air inlet pipe; 5. First connecting pipe; 7. Servo motor; 8. First piston; 9. Backflush pipe; 10. First rotating shaft; 11. Bevel gear; 12. Second rotating shaft; 13. Rotating disk; 14. Vent hole; 15. Insert post; 16. Sliding block; 17. Insert block; 18. Insertion groove; 19. Cleaning bristles; 20. Heat exchange fin tube; 21. Impurity outlet; 22. Second piston; 23. Rotating block; 24. Filter plate; 25. Fixing plate; 26. Second connecting pipe; 27. Fan; 28. Air outlet pipe. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] Obviously, 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 than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Please see Figure 1-3This utility model provides a waste heat recovery device for a coating line, including a heat exchange box 1. A servo motor 7 is fixedly connected to the top of the heat exchange box 1. An air inlet pipe 4 and an air outlet pipe 28 are respectively opened on both sides of the heat exchange box 1. A fan 27 is fixedly connected inside the air outlet pipe 28. A first rotating shaft 10 is fixedly connected to the output shaft of the servo motor 7. A fixing plate 25 is fixedly connected to the top of the inner cavity of the heat exchange box 1. A second rotating shaft 12 is rotatably inserted into the fixing plate 25. The outer surfaces of the second rotating shaft 12 and the first rotating shaft 10 are both fixedly sleeved. There are bevel gears 11, two of which mesh. A sliding block 16 is slidably engaged inside the heat exchange box 1. A rotating disk 13 is fixedly connected to the bottom end of each bevel gear 11, and a pin 15 is fixedly connected to the bottom of the rotating disk 13. The pin 15 is slidably inserted into the top of the sliding block 16. Multiple heat exchange fins 20 are installed inside the heat exchange box 1, and both ends of the multiple heat exchange fins 20 are respectively connected to a first connecting pipe 5 and a second connecting pipe 26. Multiple cleaning bristles are fixedly connected to the bottom of the sliding block 16. 19. The air inlet pipe 4 is equipped with a cleaning mechanism. By turning on the fan 27, the hot gas from the coating line is drawn into the heat exchange box 1 through the air inlet pipe 4, and heat exchange occurs through multiple heat exchange fins 20. Connected to the heat exchange pipeline via the first connecting pipe 5 and the second connecting pipe 26, heat exchange occurs with the medium inside the pipeline, thus recovering and utilizing the waste heat from the coating line. Simultaneously, during heat recovery, the servo motor 7 is activated, and the meshing of two bevel gears 11 facilitates the flow of heat. The rotation of the second rotating shaft 12 drives the rotating block 23 and multiple brush bristles to rotate, thereby cleaning the gas impurities on the filter plate 24 and preventing impurities from clogging the filter holes and affecting the filtration efficiency. On the other hand, the rotation of the rotating disk 13 causes the sliding block 16 to slide back and forth on the top of multiple heat exchange fins 20, thereby using multiple cleaning bristles 19 to repeatedly clean the outer surface of multiple heat exchange fins 20, preventing unfiltered impurities in the gas from adhering to the outer surface of multiple heat exchange fins 20 and affecting the heat exchange efficiency.

[0021] Furthermore, to facilitate backflushing and cleaning of the filter plate 24 and to remove filtered impurities, a backflushing pipe 9 is fixedly inserted into the top of the heat exchange box 1. The backflushing pipe 9 is L-shaped, and its horizontal end is located on the side of the filter plate 24 away from the rotating block 23. A first piston 8 is inserted into the top of the backflushing pipe 9. The cleaning mechanism includes a rotating block 23. The filter plate 24 is fixedly connected inside the air inlet pipe 4. One end of the second rotating shaft 12 passes through the interior of the filter plate 24. The rotating block 23 is fixedly connected to one end of the second rotating shaft 12. Multiple bristles are fixedly connected to the outer surface of one side of the filter plate 24 on the rotating block 23.

[0022] To facilitate the stable reciprocating sliding of the sliding block 16 and to facilitate the cleaning of filter impurities on one side of the filter plate 24, a groove is provided on the top of the sliding block 16. The bottom end of the insertion post 15 is slidably inserted into the inside of the groove, and the outer surface of the insertion post 15 is in contact with the inner wall of the groove. Insertion blocks 17 are fixedly connected to both ends of the sliding block 16, and insertion grooves 18 are provided on both sides of the inner cavity of the heat exchange box 1. The two insertion blocks 17 are slidably inserted into the two insertion grooves 18 respectively.

[0023] Furthermore, in order to improve the heat exchange efficiency between the gas and the multiple heat exchange fins 20, two symmetrical vent holes 14 are provided on the outer surface of the rotating disk 13, and the two vent holes 14 are respectively located on both sides of the first rotating shaft 10.

[0024] To facilitate the entry of gas into the heat exchange box 1 for heat recovery, one end of the air inlet pipe 4 protrudes from the outside of the heat exchange box 1, and the other end of the air inlet pipe 4 is inserted into the inside of the heat exchange box 1. The end of the air inlet pipe 4 inside the heat exchange box 1 is located above the rotating disk 13, and the end of the air inlet pipe 4 inside the heat exchange box 1 is located on one side of the fixed plate 25.

[0025] To facilitate the collection and treatment of incompletely filtered impurities, the bottom of the heat exchange box 1 is connected to an impurity outlet pipe 3, the bottom end of the impurity outlet pipe 3 is connected to an impurity box 2, and an impurity discharge port 21 is opened on one side of the impurity discharge port 21, and a second piston 22 is movably plugged on one side of the impurity discharge port 21.

[0026] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0027] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0028] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A waste heat recovery device for a coating line, comprising a heat exchange box (1), characterized in that: A servo motor (7) is fixedly connected to the top of the heat exchange box (1). An air inlet pipe (4) and an air outlet pipe (28) are respectively opened on both sides of the heat exchange box (1). A fan (27) is fixedly connected inside the air outlet pipe (28). The output shaft of the servo motor (7) is fixedly connected to a first rotating shaft (10). A fixing plate (25) is fixedly connected to the top of the inner cavity of the heat exchange box (1). A second rotating shaft (12) is rotatably inserted into the fixing plate (25). Bevel gears (11) are fixedly sleeved on the outer surfaces of the second rotating shaft (12) and the first rotating shaft (10). The two bevel gears (11) mesh with each other. The heat exchange box (1) has a sliding block (16) inside, and a rotating disk (13) is fixedly connected to the bottom end of the bevel gear (11). A plug (15) is fixedly connected to the bottom of the rotating disk (13). The sliding mechanism of the plug (15) is inserted into the top of the sliding block (16). Multiple heat exchange fins (20) are installed inside the heat exchange box (1). The two ends of the multiple heat exchange fins (20) are respectively connected to a first connecting pipe (5) and a second connecting pipe (26). Multiple cleaning bristles (19) are fixedly connected to the bottom of the sliding block (16). A cleaning mechanism is provided inside the air inlet pipe (4).

2. The waste heat recovery device for a coating line according to claim 1, characterized in that: A backflush pipe (9) is fixedly inserted into the top of the heat exchange box (1), and the backflush pipe (9) is L-shaped. The horizontal end of the backflush pipe (9) is located on the side of the filter plate (24) away from the rotating block (23). A first piston (8) is plugged into the top of the backflush pipe (9). The cleaning mechanism includes a rotating block (23). The filter plate (24) is fixedly connected inside the air inlet pipe (4). One end of the second rotating shaft (12) passes through the inside of the filter plate (24). The rotating block (23) is fixedly connected to one end of the second rotating shaft (12). Multiple bristles are fixedly connected to the outer surface of the rotating block (23) on one side of the filter plate (24).

3. The waste heat recovery device for a coating line according to claim 1, characterized in that: The top of the sliding block (16) is provided with a groove, the bottom end of the insertion post (15) is slidably inserted into the inside of the groove, and the outer surface of the insertion post (15) is in contact with the inner wall of the groove. Both ends of the sliding block (16) are fixedly connected with insertion blocks (17), and both sides of the inner cavity of the heat exchange box (1) are provided with insertion grooves (18). The two insertion blocks (17) are slidably inserted into the inside of the two insertion grooves (18).

4. The waste heat recovery device for a coating line according to claim 1, characterized in that: The outer surface of the rotating disk (13) is provided with two symmetrical vent holes (14), and the two vent holes (14) are located on both sides of the first rotating shaft (10), and the multiple cleaning bristles (19) are respectively attached to the multiple heat exchange fin tubes (20).

5. The waste heat recovery device for a coating line according to claim 1, characterized in that: One end of the air inlet pipe (4) protrudes outside the heat exchange box (1), and the other end of the air inlet pipe (4) is inserted into the interior of the heat exchange box (1). The end of the air inlet pipe (4) inside the heat exchange box (1) is located above the rotating disk (13), and the end of the air inlet pipe (4) inside the heat exchange box (1) is located on one side of the fixed plate (25).

6. The waste heat recovery device for a coating line according to claim 1, characterized in that: The bottom of the heat exchange box (1) is connected to a sludge outlet pipe (3), the bottom end of the sludge outlet pipe (3) is connected to a sludge box (2), and a sludge discharge port (21) is provided on one side of the sludge discharge port (21), and a second piston (22) is provided on one side of the sludge discharge port (21).

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