Composite flue gas waste heat recovery device

Abstract

The utility model discloses a combined type flue gas waste heat recovery device which comprises a heat exchange box, a heat exchange pipe is rotationally arranged in the heat exchange box, the heat exchange pipe is arranged in a snake shape, a heat conduction plate is arranged on the heat exchange pipe, a driving motor is arranged on the heat exchange box, a first gear is arranged on a motor shaft of the driving motor, a second gear is arranged on the heat exchange pipe, and a heat preservation layer is arranged in the heat exchange box. An adjusting pipe is arranged on the heat exchange pipe, an adjusting plate is rotationally arranged on the adjusting pipe, an adjusting spring is arranged between the adjusting plate and the adjusting pipe, and a moving device is arranged on the adjusting pipe. A driving motor drives a heat exchange pipe to rotate through cooperation of a first gear and a second gear, water in a heat exchange box is stirred in cooperation with a heat conduction plate, the heat exchange effect and heat exchange efficiency are improved, the circulation radius of gas is adjusted through an adjusting plate, then the circulation speed of smoke is adjusted, and the preheating recovery device is convenient to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, and more specifically, it relates to a composite flue gas waste heat recovery device. Background Art

[0002] When producing composite chemical materials such as graphene, polytetrafluoroethylene, and carbon fiber, high-temperature flue gas will be generated. For example, during the sintering process of polytetrafluoroethylene, this process is usually carried out at high temperature and flue gas will be generated, especially if the exhaust system of the sintering furnace is incomplete or the combustion products are not effectively treated; during the production process of carbon fiber, especially in the high-temperature graphitization stage, the carbon fiber will undergo high-temperature treatment to improve its graphitization degree, and high-temperature flue gas may be generated during this process, which needs to be treated through an appropriate exhaust system and waste gas treatment facilities.

[0003] In the existing waste heat recovery devices, flue gas is simply introduced into the heat exchange tubes. However, it is difficult to adjust the flow rate of the flue gas in the heat exchange tubes. If the flow rate is too fast, the heat exchange time in the heat exchange tubes is short, affecting the heat exchange effect; if the flow rate is too slow, the heat exchange efficiency of the flue gas is affected. At the same time, the contact area between the heat exchange tubes and the water in the heat exchange box is limited, affecting the heat exchange efficiency. Summary of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the problems existing in the prior art, the utility model provides a composite flue gas waste heat recovery device to solve the technical problems of difficult adjustment of the flue gas flow rate and poor heat exchange effect of the flue gas mentioned in the background art.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solution: A composite flue gas waste heat recovery device includes a heat exchange box. A heat exchange tube is rotatably arranged in the heat exchange box. The heat exchange tube is arranged in a serpentine shape. The heat exchange tube is rotatably connected to the heat exchange box through a sealed bearing. A heat conduction plate is arranged on the heat exchange tube. A driving motor is arranged on the heat exchange box. A first gear is arranged on the motor shaft of the driving motor. A second gear is arranged on the heat exchange tube. A heat insulation layer is arranged in the heat exchange box. An adjusting tube is arranged on the heat exchange tube. An adjusting plate is rotatably arranged on the adjusting tube. An adjusting spring is arranged between the adjusting plate and the adjusting tube. A moving device is arranged on the adjusting tube.

[0008] The utility model is further arranged such that the moving device includes a moving inner tube, and a moving ring cooperating with the adjusting plate is arranged on the moving inner tube to facilitate adjusting the angle of the adjusting plate.

[0009] The present utility model is further configured such that a movable outer tube is provided on the adjusting tube, a movable thread is provided on the movable outer tube, a movable block is provided on the movable inner tube, and a movable head engaged with the movable thread is provided on the movable block. By the cooperation of the movable head and the movable thread, the position of the movable inner tube is adjusted.

[0010] The present utility model is further configured such that a movable groove engaged with the movable block is provided on the adjusting tube to limit the moving direction of the movable inner tube.

[0011] The present utility model is further configured such that limiting rings are provided on both sides of the adjusting tube on the movable outer tube to limit the rotational position of the movable outer tube.

[0012] The present utility model is further configured such that a water inlet pipe and a water outlet pipe are provided on the heat exchange box to facilitate the replacement of water in the heat exchange box.

[0013] The present utility model is further configured such that the heat insulation layer includes an aluminum foil layer, a heat insulation coating is provided on the aluminum foil layer, and an aerogel heat insulation layer is provided on the heat insulation coating. The three-layer heat insulation structure insulates the heat exchange box to reduce heat dissipation.

[0014] The present utility model is further configured such that a support seat is provided at the bottom of the heat exchange box, and a support pad is provided at the bottom of the support seat to facilitate the stable support of the heat exchange box.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present utility model provides a composite flue gas waste heat recovery device, which has the following beneficial effects:

[0017] 1. By providing a heat conducting plate on the heat exchange tube, it is convenient to conduct heat on the flue gas in the heat exchange tube, improving the heat dissipation area and heat conduction effect. The driving motor drives the heat exchange tube to rotate through the cooperation of the first gear and the second gear, and cooperates with the heat conducting plate to stir the water in the heat exchange box, improving the heat exchange effect and heat exchange efficiency.

[0018] 2. The movable outer tube drives the movable inner tube to move. The movable inner tube drives the movable ring to squeeze the adjusting plate, and the adjusting plate adjusts the flow radius of the gas, thereby adjusting the flow velocity of the flue gas, making the preheating recovery device easy to adjust.

[0019] 3. By providing a heat insulation layer, the heat insulation effect of the heat exchange box is improved to prevent heat dissipation. By providing a support seat and a support pad, the support stability of the heat exchange box is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a composite flue gas waste heat recovery device in the present utility model;

[0021] Figure 2 Schematic diagram of the internal structure of the heat exchange box in the present utility model;

[0022] Figure 3 Schematic diagram of the cooperative structure of the driving motor, the first gear, the second gear and the heat exchange tube in the present utility model;

[0023] Figure 4 Schematic diagram of the composition structure of the heat insulation layer in the present utility model;

[0024] Figure 5 Schematic cross-sectional structure diagram of the adjusting tube in the present utility model.

[0025] In the figure: 1. Heat exchange box; 2. Heat exchange tube; 3. Heat conduction plate; 4. Driving motor; 5. First gear; 6. Second gear; 7. Heat insulation layer; 8. Adjusting tube; 9. Adjusting plate; 10. Adjusting spring; 11. Moving inner tube; 12. Moving ring; 13. Moving outer tube; 14. Moving thread; 15. Moving block; 16. Moving head; 17. Moving groove; 18. Limiting ring; 19. Water inlet pipe; 20. Water outlet pipe; 21. Aluminum foil layer; 22. Heat insulation paint; 23. Aerogel heat insulation layer; 24. Support seat; 25. Support pad. Detailed implementation manners

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0028] In the present utility model, unless otherwise stated, the orientations such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for ease of understanding and description, "left, right" are usually in the left and right shown in the drawings; "inner, outer" refer to the inner and outer relative to the contours of the respective components, but the above orientation terms are not used to limit the present utility model.

[0029] Please refer to Figures 1-5, A composite flue gas waste heat recovery device, including a heat exchange box 1. Inside the heat exchange box 1, a heat exchange tube 2 is rotatably arranged. The heat exchange tube 2 is arranged in a serpentine shape. The heat exchange tube 2 is rotatably connected to the heat exchange box 1 through a sealed bearing. A heat conduction plate 3 is provided on the heat exchange tube 2. A driving motor 4 is provided on the heat exchange box 1. A first gear 5 is provided on the motor shaft of the driving motor 4. A second gear 6 is provided on the heat exchange tube 2. A heat preservation layer 7 is provided inside the heat exchange box 1. An adjustment tube 8 is provided on the heat exchange tube 2. An adjustment plate 9 is rotatably arranged on the adjustment tube 8. An adjustment spring 10 is provided between the adjustment plate 9 and the adjustment tube 8. A moving device is provided on the adjustment tube 8. A water inlet pipe 19 and a water outlet pipe 20 are provided on the heat exchange box 1. The heat preservation layer 7 includes an aluminum foil layer 21. An insulating paint 22 is provided on the aluminum foil layer 21. An aerogel heat insulation layer 23 is provided on the insulating paint 22. A support base 24 is provided at the bottom of the heat exchange box 1. A support pad 25 is provided at the bottom of the support base 24.

[0030] In this embodiment, during use, the heat exchange box 1 is stably supported by the support base 24 and the support pad 25. Water is added into the heat exchange box 1 through the water inlet pipe 19. High-temperature flue gas is introduced into the heat exchange tube 2. The heat of the high-temperature flue gas is dissipated through the heat conduction plate 3 and the heat exchange tube 2 itself to heat the water, thereby recycling the heat. At the same time, the driving motor 4 is started. The driving motor 4 drives the first gear 5 to rotate. The first gear 5 drives the second gear 6 and the heat exchange tube 2 to rotate. The heat exchange tube 2 cooperates with the heat conduction plate 3 to stir the water in the heat exchange box 1, improving the heat exchange efficiency and effect. Through the aluminum foil layer 21, the insulating paint 22 and the aerogel heat insulation layer 23, the heat dissipation and heat preservation structure insulates the heat exchange box 1 to reduce heat loss.

[0031] Please refer to Figure 5 , As an implementation manner of the moving device: The moving device includes a moving inner tube 11. A moving ring 12 cooperating with the adjustment plate 9 is provided on the moving inner tube 11. A moving outer tube 13 is provided on the adjustment tube 8. A moving thread 14 is provided on the moving outer tube 13. A moving block 15 is provided on the moving inner tube 11. A moving head 16 cooperating with the moving thread 14 is provided on the moving block 15. A moving groove 17 cooperating with the moving block 15 is provided on the adjustment tube 8. The adjustment tube 8 is provided with limiting rings 18 on both sides of the moving outer tube 13.

[0032] More specifically, when adjusting the gas flow rate, rotate the moving outer tube 13. The moving thread 14 inside the moving outer tube 13 cooperates with the moving head 16 on the moving block 15. Under the limiting action of the moving groove 17, drive the moving inner tube 11 to move along the adjustment tube 8. Then the moving inner tube 11 drives the moving ring 12 to squeeze the adjustment plate 9. The gas flow area is adjusted through the adjustment plate 9, thereby changing the air flow rate inside the adjustment tube 8 and adjusting the heat exchange efficiency.

[0033] In summary, when the overall device is in use or operation: during use, the heat exchange box 1 is stably supported by the support base 24 and the support pad 25. Water is added into the heat exchange box 1 through the water inlet pipe 19, and high-temperature flue gas is introduced into the heat exchange pipe 2. The heat of the high-temperature flue gas is dissipated through the heat conduction plate 3 and the heat exchange pipe 2 itself to heat the water, thereby recycling the heat. At the same time, the drive motor 4 is started. The drive motor 4 drives the first gear 5 to rotate, the first gear 5 drives the second gear 6 and the heat exchange pipe 2 to rotate, and the heat exchange pipe 2 cooperates with the heat conduction plate 3 to stir the water in the heat exchange box 1, improving the heat exchange efficiency and effect. The heat exchange box 1 is insulated by the aluminum foil layer 21, the heat insulation coating 22 and the aerogel heat insulation layer 23, a heat dissipation and insulation structure, to reduce heat loss.

[0034] When adjusting the gas flow rate, rotate the movable outer tube 13. The movable thread 14 in the movable outer tube 13 cooperates with the movable head 16 on the movable block 15, and under the limiting action of the movable groove 17, drives the movable inner tube 11 to move along the adjusting tube 8. Then, the movable inner tube 11 drives the movable ring 12 to squeeze the adjusting plate 9, and the gas flow area is adjusted through the adjusting plate 9, thereby changing the air flow rate in the adjusting tube 8 and adjusting the heat exchange efficiency.

[0035] In all the solutions mentioned above, for the connection between two components, welding, connection with bolts and nuts, connection with bolts or screws, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite flue gas waste heat recovery device, comprising a heat exchange box (1), characterized in that: A heat exchange tube (2) is rotatably arranged in the heat exchange box (1), the heat exchange tube (2) is arranged in a serpentine shape, the heat exchange tube (2) and the heat exchange box (1) are rotatably connected via a sealed bearing, a heat conduction plate (3) is provided on the heat exchange tube (2), a drive motor (4) is provided on the heat exchange box (1), a first gear (5) is provided on the motor shaft of the drive motor (4), a second gear (6) is provided on the heat exchange tube (2), a thermal insulation layer (7) is provided in the heat exchange box (1), an adjustment tube (8) is provided on the heat exchange tube (2), an adjustment plate (9) is rotatably arranged on the adjustment tube (8), an adjustment spring (10) is provided between the adjustment plate (9) and the adjustment tube (8), and a moving device is provided on the adjustment tube (8).

2. The composite flue gas waste heat recovery device according to claim 1 is characterized in that: The moving device comprises a moving inner tube (11), and a moving ring (12) cooperating with the adjusting plate (9) is arranged on the moving inner tube (11).

3. The composite flue gas waste heat recovery device according to claim 2 is characterized in that: The regulating tube (8) is provided with a movable outer tube (13), the movable outer tube (13) is provided with a movable thread (14), the movable inner tube (11) is provided with a movable block (15), and the movable block (15) is provided with a movable head (16) that cooperates with the movable thread (14).

4. The composite flue gas waste heat recovery device according to claim 3 is characterized in that: The regulating tube (8) is provided with a moving groove (17) which cooperates with the moving block (15).

5. The composite flue gas waste heat recovery device according to claim 3 is characterized in that: The regulating tube (8) is provided with limiting rings (18) on both sides of the movable outer tube (13).

6. The composite flue gas waste heat recovery device according to claim 1 is characterized in that: The heat exchange box (1) is provided with a water inlet pipe (19) and a water outlet pipe (20).

7. The composite flue gas waste heat recovery device according to claim 1 is characterized in that: The thermal insulation layer (7) comprises an aluminum foil layer (21), a thermal insulation coating (22) is provided on the aluminum foil layer (21), and an aerogel thermal insulation layer (23) is provided on the thermal insulation coating (22).

8. The composite flue gas waste heat recovery device according to claim 1 is characterized in that: A support seat (24) is provided at the bottom of the heat exchange box (1), and a support pad (25) is provided at the bottom of the support seat (24).

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