A volatile organic compound exhaust gas comprehensive treatment device

Abstract

This invention discloses a comprehensive treatment device for volatile organic compound (VOC) waste gas, comprising a base, a gear sleeve rotatably connected above the base, a fixed box fixedly connected above the gear sleeve, a treatment box slidably connected inside the fixed box, an internal gear rotatably connected to the bottom surface of the treatment box, the internal gear meshing with an internal rack, an activated carbon plate fixedly connected to the end of the internal rack away from the internal gear, a rotating gear rod fixedly connected above the internal gear, and a second rack meshing with the rotating gear rod. By integrating electrothermal desorption technology with a micro-catalytic combustion system, the limitations of traditional activated carbon adsorption technology are overcome. When the activated carbon plate is saturated, it is heated by electricity through a conductive wire rod and a discharge contact plate, causing the adsorbed VOCs to be rapidly desorbed. This avoids the cumbersome process of manually replacing the carbon plates. The desorbed high-concentration waste gas is directly introduced into the micro-catalytic combustion box, where it is decomposed into carbon dioxide and water under the action of a catalyst, achieving harmless treatment.

Description

Technical Field

[0001] This invention relates to the field of volatile organic compound (VOC) waste gas treatment technology, and more particularly to a comprehensive VOC waste gas treatment device. Background Technology

[0002] Volatile organic compounds (VOCs) are a class of organic compounds with high vapor pressure and high volatility. There are over 300 types, mainly including alkanes, alkenes, aromatics, halogenated hydrocarbons, ketones, and esters. As core precursors to air pollution, their sources are widespread and complex, posing multiple threats to the environment and human health.

[0003] Volatile organic compounds (VOCs) are present in various technical and engineering fields. For example, VOCs generated during automotive painting and ship coating are characterized by high concentrations, large volumes, and complex compositions. While activated carbon adsorption technology can effectively reduce emission concentrations, it suffers from limitations such as limited adsorption capacity, difficult regeneration, and high maintenance costs. This invention aims to provide a comprehensive VOCs treatment device to alleviate the aforementioned technical problems in existing technologies. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art, such as the high concentration, large volume, and complex composition of volatile organic compound (VOC) waste gas generated in engineering fields like automotive painting and ship coating. While activated carbon adsorption technology can effectively reduce emission concentrations, it suffers from limited adsorption capacity, difficult regeneration, and high maintenance costs. Therefore, this invention proposes a comprehensive VOC waste gas treatment device.

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

[0006] A comprehensive treatment device for volatile organic compound (VOC) waste gas includes a base, a gear sleeve rotatably connected above the base, a fixed box fixedly connected above the gear sleeve, a treatment box slidably connected inside the fixed box, an internal gear rotatably connected to the bottom surface of the treatment box, the internal gear meshing with an internal rack, an activated carbon plate fixedly connected to the end of the internal rack away from the internal gear, a rotating gear rod fixedly connected above the internal gear, the rotating gear rod meshing with a second rack, the second rack fixedly connected to a second discharge contact plate, the rotating gear rod meshing with a first rack, the first rack fixedly connected to a first discharge contact plate, the bottom of the internal gear penetrating the treatment box and fixedly connected to a second bevel gear, the second bevel gear meshing with a first bevel gear, the first bevel gear being driven by a connecting rod, the connecting rod being driven by a first threaded rod, the end of the connecting rod away from the first threaded rod being driven by a second threaded rod, the first threaded rod being threadedly connected to a first stop block, and the second threaded rod being driven by a second stop block.

[0007] The above technical solution further includes:

[0008] The first bevel gear is sleeved on the outside of the support rod, the support rod is rotatably connected to the connecting block, the support rod is driven by a third belt, the end of the third belt away from the connecting block is driven by a connecting rod, the connecting rod is driven by a first belt, the first belt is driven by a first threaded rod, the connecting rod is driven by a second belt, and the second belt is driven by a second threaded rod.

[0009] A seat gear is rotatably connected above the base, and the seat gear meshes with the outer wall of the gear sleeve. The bottom of the fixed box is provided with a hole for connecting a pipe. A micro catalytic combustion box is fixedly connected to the end of the pipe away from the fixed box. The micro catalytic combustion box is fixed above the base, and an exhaust pipe is provided on the side of the micro catalytic combustion box.

[0010] A volatile organic compound (VOC) concentration detection block is installed above the fixed box, which is used to detect the concentration of VOCs in the current area.

[0011] The fixed box is equipped with a slide rail inside, and the slide rail is slidably connected to the processing box.

[0012] The bottom of the processing box has a round hole, which is used to connect to the opening of the pipe.

[0013] The activated carbon plate is internally equipped with multiple sets of conductive rods, which are used to contact the first and second discharge contacts. These conductive rods ensure precise contact with the first and second discharge contacts, providing a reliable connection for the energized regeneration of the activated carbon plate. When the activated carbon plate reaches saturation from the adsorbed waste gas, this precise conductive contact allows for rapid heating by electricity. This enables the volatile organic compounds adsorbed on the activated carbon plate to quickly escape, improving the regeneration efficiency and ensuring the device can continuously and stably adsorb and treat waste gas. Furthermore, the multiple sets of conductive rods ensure more uniform heating of the activated carbon plate, further enhancing the desorption effect, extending the service life of the activated carbon plate, and reducing replacement costs.

[0014] A fan is installed above the treatment chamber to direct exhaust gas into and out of the circular orifice. This fan plays a crucial role in the entire exhaust gas treatment process. When the activated carbon plate is electrically heated and exhaust gas overflows, the fan quickly and effectively blows this high-concentration exhaust gas into the circular orifice, where it then proceeds to subsequent treatment stages. This active exhaust gas delivery method significantly increases the flow rate of exhaust gas within the device, reduces its residence time in the treatment chamber, and avoids the risk of secondary pollution that may result from exhaust gas accumulation.

[0015] The fixed box has a first square slot for placing the first stop block and a second square slot for placing the second stop block. These slots are of significant practical value. The first slot holds the first stop block, and the second slot holds the second stop block. During device operation, when operations such as electro-regeneration of the activated carbon plate are required, the first and second stop blocks can be moved and stored as needed.

[0016] The connecting rod is rotatably connected to the fixed plate, and a fan is installed outside the treatment box. The coordinated operation of these components makes the entire waste gas treatment system more flexible and stable. The rotatable connection between the connecting rod and the fixed plate provides flexibility to the internal transmission structure, allowing for better coordination between the various transmission components and reducing energy loss and the probability of malfunctions during transmission.

[0017] The present invention has the following beneficial effects:

[0018] 0. This invention overcomes the limitations of traditional activated carbon adsorption technology by integrating electrothermal desorption technology with a micro catalytic combustion system. When the activated carbon plate becomes saturated, it is heated by electricity through a conductive wire and a discharge contact plate, causing rapid desorption of the adsorbed volatile organic compounds. This avoids the cumbersome process of manually replacing the carbon plates. The high-concentration desorbed waste gas is directly introduced into the micro catalytic combustion chamber, where it is decomposed into carbon dioxide and water under the action of a catalyst, achieving harmless treatment. This design not only reduces the frequency of activated carbon replacement and extends the service life of the carbon plates, but also eliminates the need for external treatment equipment for the desorbed waste gas, reducing the risk of secondary pollution.

[0019] 1. In this invention, the device monitors the environmental concentration in real time using a volatile organic compound (VOC) emission concentration detection block, and drives the rollers on the base to automatically move to the high-concentration area for precise adsorption. The gear and rack transmission system ensures dynamic switching and regeneration of the activated carbon plates, maintaining stable adsorption efficiency. The modular design allows for flexible deployment in different workstations such as paint booths and welding areas, eliminating the need for fixed pipelines and adapting to complex site layouts. For temporary scenarios such as municipal engineering and emergency repairs, the device can respond quickly, covering dispersed emission sources. Furthermore, the integrated design of the micro catalytic combustion chamber and treatment chamber reduces the device size to that of traditional devices, combining high-efficiency processing capacity with portability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a comprehensive treatment device for volatile organic compound waste gas proposed in this invention;

[0021] Figure 2This is a schematic diagram of the bottom structure of the processing box in this invention;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0024] Figure 5 This is a schematic diagram of the internal structure of the processing box in this invention;

[0025] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0026] Figure 7 for Figure 5 Enlarged view of point D;

[0027] Figure 8 This is a schematic diagram of the front view structure in this invention;

[0028] Figure 9 for Figure 8 Enlarged diagram of point E in the middle.

[0029] In the diagram: 1. Base; 2. Miniature catalytic combustion box; 3. Pipeline; 4. Gear sleeve; 5. Fixing box; 6. Gear on seat; 7. Volatile organic compound (VOC) waste gas concentration detection block; 8. Activated carbon plate; 9. Conductive screw; 10. Treatment box; 11. Slide rail; 12. First stop block; 13. First square groove; 14. Second square groove; 15. Second stop block; 16. First threaded rod; 17. First belt; 18. Second threaded rod; 19. Second belt; 20. Round hole; 21. Connecting rod; 22. Fixing plate; 23. Third belt; 24. Connecting block; 25. Support rod; 26. First bevel gear; 27. Second bevel gear; 28. Gear inside the box; 29. ​​Rack inside the box; 30. First rack; 31. Second rack; 32. Rotating gear rod; 33. First discharge contact plate; 34. Second discharge contact plate; 35. Fan. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-9As shown, this invention is a comprehensive treatment device for volatile organic compound (VOC) waste gas, comprising a base 1, a gear sleeve 4 rotatably connected above the base 1, a fixed box 5 fixedly connected above the gear sleeve 4, a treatment box 10 slidably connected inside the fixed box 5, an internal gear 28 rotatably connected to the bottom surface of the treatment box 10, the internal gear 28 meshing with an internal rack 29, an activated carbon plate 8 fixedly connected to the end of the internal rack 29 away from the internal gear 28, a rotating gear rod 32 fixedly connected above the internal gear 28, the rotating gear rod 32 meshing with a second rack 31, and the second rack 31 interacting with a second discharge contact plate. 34 is fixedly connected, the rotating gear rod 32 meshes with the first rack 30, the first rack 30 is fixedly connected with the first discharge contact plate 33, the bottom of the gear 28 inside the box passes through the processing box 10 and is fixedly connected with the second bevel gear 27, the second bevel gear 27 meshes with the first bevel gear 26, the first bevel gear 26 is driven by the connecting rod 21, the connecting rod 21 is driven by the first threaded rod 16, the end of the connecting rod 21 away from the first threaded rod 16 is driven by the second threaded rod 18, the first threaded rod 16 is threadedly connected to the first stop 12, and the second threaded rod 18 is driven by the second stop 15.

[0032] In one embodiment, the first bevel gear 26 is sleeved on the outside of the support rod 25. The support rod 25 is rotatably connected to the connecting block 24. The support rod 25 is driven by a third belt 23. The end of the third belt 23 away from the connecting block 24 is driven by a connecting rod 21. The connecting rod 21 is driven by a first belt 17. The first belt 17 is driven by a first threaded rod 16. The connecting rod 21 is driven by a second belt 19. The second belt 19 is driven by a second threaded rod 18.

[0033] In one embodiment, for the first bevel gear 26, a seat gear 6 is rotatably connected above the base 1, the seat gear 6 meshes with the outer wall of the gear sleeve 4, the bottom of the fixed box 5 is provided with a hole for connecting the pipe 3, the end of the pipe 3 away from the fixed box 5 is fixedly connected to a micro catalytic combustion box 2, the micro catalytic combustion box 2 is fixed above the base 1, and an exhaust pipe is provided on the side of the micro catalytic combustion box 2.

[0034] In one embodiment, for the first bevel gear 26, a volatile organic compound (VOC) concentration detection block 7 is provided above the fixed box 5. The VOC concentration detection block 7 is used to detect the concentration of VOC in the current area.

[0035] In one embodiment, for the first bevel gear 26, a slide rail 11 is provided inside the fixed box 5, and the slide rail 11 is slidably connected to the processing box 10.

[0036] In one embodiment, for the first bevel gear 26, a circular hole 20 is provided at the bottom of the processing box 10, and the circular hole 20 is used to connect to the opening of the pipe 3.

[0037] In one embodiment, the activated carbon plate 8 is provided with multiple sets of conductive rods 9 inside, which are used to make contact between the first discharge contact plate 33 and the second discharge contact plate 34.

[0038] In this embodiment, the conductive lead screw 9 can precisely contact the first discharge contact plate 33 and the second discharge contact plate 34, providing a reliable connection method for the energized regeneration of the activated carbon plate 8. When the activated carbon plate 8 reaches saturation with adsorbed waste gas, this precise conductive contact allows for rapid energization and heating of the activated carbon plate 8. This enables the volatile organic compounds adsorbed on the activated carbon plate 8 to quickly overflow, improving the regeneration efficiency of the activated carbon plate 8 and ensuring that the device can continuously and stably adsorb and treat waste gas. In addition, the arrangement of multiple sets of conductive lead screws 9 also makes the activated carbon plate 8 heated more evenly, further improving the desorption effect, extending the service life of the activated carbon plate 8, and reducing replacement costs.

[0039] In one embodiment, for the above-mentioned processing box 10, a fan is provided on the top of the processing box 10 for allowing exhaust gas to enter and exit the circular hole 20.

[0040] In this embodiment, the fan mounted above the treatment chamber 10 plays a crucial role in propelling the entire waste gas treatment process. When the activated carbon plate 8 is electrically heated, causing waste gas to overflow, the fan quickly and effectively blows this high-concentration waste gas into the circular hole 20, thus guiding it into subsequent treatment stages. This active waste gas delivery method significantly increases the flow rate of waste gas within the device, reduces the residence time of waste gas in the treatment chamber 10, and avoids the risk of secondary pollution that may result from waste gas accumulation.

[0041] In one embodiment, the fixed box 5 has a first square groove 13 for placing the first stop 12 inside, and a second square groove 14 for placing the second stop 15 inside.

[0042] In this embodiment, the first square slot 13 and the second square slot 14 inside the fixed box 5 have significant practical value. The first square slot 13 is used to place the first stop block 12, and the second square slot 14 is used to place the second stop block 15. During the operation of the device, when it is necessary to perform operations such as electrical regeneration of the activated carbon plate 8, the first stop block 12 and the second stop block 15 can be moved and stored as needed.

[0043] In one embodiment, the connecting rod 21 and the fixing plate 22 are rotatably connected, and a fan 35 is provided outside the processing box 10.

[0044] In this embodiment, the connecting rod 21 is rotatably connected to the fixed plate 22, and a fan 35 is installed outside the treatment box 10. The coordinated work of these components makes the entire exhaust gas treatment system more flexible and stable. The rotatable connection between the connecting rod 21 and the fixed plate 22 provides a certain degree of flexibility to the internal transmission structure of the device, enabling better coordination between various transmission components and reducing energy loss and the probability of failure during transmission.

[0045] The working principle of the volatile organic compound (VOC) waste gas comprehensive treatment device of this invention is as follows: First, the device is moved to the location where VOCs need to be absorbed using the rollers at the bottom of the base 1. At this time, the fan 35 is started, and the fan 35 absorbs the VOCs in the air. The absorbed gas then passes through the activated carbon plate 8 and is absorbed. After a period of absorption, since the absorption capacity of the activated carbon plate 8 is limited, the gear 28 inside the box can be rotated. The rotation of the gear 28 inside the box will mesh with the second rack 31 and the first rack 30, thereby bringing the second discharge contact plate 34 and the first discharge contact plate 33 closer to each other. As the gear 28 inside the box rotates, it meshes with the rack 29 inside the box, causing the activated carbon plate 8 to gradually move closer to the gear 28 inside the box.

[0046] Meanwhile, the rotation of gear 28 inside the housing drives the second bevel gear 27 at the bottom to rotate. The rotation of the second bevel gear 27 meshes with the first bevel gear 26, thereby driving the support rod 25 to rotate. The support rod 25, in turn, drives the connecting rod 21 to rotate via the third belt 23, thus enabling the first belt 17 and the second belt 19 to transmit power. The rotation of the first belt 17 drives the first threaded rod 16 to rotate, and the rotation of the second belt 19 drives the second threaded rod 18 to rotate. The rotation of the first threaded rod 16 causes the second stop block 15 and the first stop block 12 to move closer together, forming a complete unit. At the same time, the rack 29 inside the housing drives the activated carbon plate 8 to move, causing the second discharge contact plate 34 and the first discharge contact plate 33 on both sides to adhere to the surface of the conductive wire rod 9 on the side of the activated carbon plate 8, thereby energizing the entire activated carbon plate 8. At this time, the volatile organic compound (VOC) waste gas absorbed by the activated carbon plate 8 is released from the treatment box 10 due to the heating effect of electricity. The concentration of the released waste gas is much higher than that of the external waste gas. Then, the fan inside the treatment box 10 is activated to blow the waste gas into the round hole 20. The waste gas passes through the gear sleeve 4 inside the pipe 3 from the round hole 20, and finally enters the micro catalytic combustion box 2. In the micro catalytic combustion box 2, the waste gas is converted into harmless substances such as carbon dioxide and water through high temperature. When the VOC waste gas concentration in a certain space is low, it can be detected by the VOC waste gas concentration detection block 7. Then, the rollers at the bottom of the base 1 are used to move it to a higher area to fully absorb the waste gas.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A comprehensive treatment device for volatile organic compound (VOC) waste gas, characterized in that, The system includes a base (1), a gear sleeve (4) rotatably connected above the base (1), a fixed box (5) fixedly connected above the gear sleeve (4), a processing box (10) slidably connected inside the fixed box (5), an internal gear (28) rotatably connected to the bottom surface of the processing box (10), an internal gear (28) meshing with an internal rack (29), an activated carbon plate (8) fixedly connected to one end of the internal rack (29) away from the internal gear (28), a rotating gear rod (32) fixedly connected above the internal gear (28), a second rack (31) meshing with the rotating gear rod (32), the second rack (31) fixedly connected to a second discharge contact plate (34), the rotating gear rod (32) meshing with a first rack (30), the first rack (30) fixedly connected to a first discharge contact plate (33), and the bottom of the internal gear (28) penetrating the processing box (10) and the second bevel gear (27). The second bevel gear (27) is meshed with the first bevel gear (26), the first bevel gear (26) is driven by the connecting rod (21), the connecting rod (21) is driven by the first threaded rod (16), the end of the connecting rod (21) away from the first threaded rod (16) is driven by the second threaded rod (18), the first threaded rod (16) is threaded by the first stop (12), the second threaded rod (18) is driven by the second stop (15), the seat gear (6) is rotatably connected above the base (1), the seat gear (6) is meshed with the outer wall of the gear sleeve (4), the bottom of the fixed box (5) is provided with a hole for connecting the pipe (3), the end of the pipe (3) away from the fixed box (5) is fixedly connected to the micro catalytic combustion box (2), the micro catalytic combustion box (2) is fixed above the base (1), and the side of the micro catalytic combustion box (2) is provided with an exhaust pipe.

2. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The first bevel gear (26) is sleeved on the outside of the support rod (25). The support rod (25) is rotatably connected to the connecting block (24). The support rod (25) is driven by a third belt (23). The end of the third belt (23) away from the connecting block (24) is driven by a connecting rod (21). The connecting rod (21) is driven by a first belt (17). The first belt (17) is driven by a first threaded rod (16). The connecting rod (21) is driven by a second belt (19). The second belt (19) is driven by a second threaded rod (18).

3. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, A volatile organic compound (VOC) concentration detection block (7) is installed above the fixed box (5), and the VOC concentration detection block (7) is used to detect the concentration of VOC in the current area.

4. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The fixed box (5) is equipped with a slide rail (11), and the slide rail (11) is slidably connected to the processing box (10).

5. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The bottom of the processing box (10) is provided with a round hole (20), which is used to connect to the opening of the pipe (3).

6. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The activated carbon plate (8) is provided with multiple sets of conductive wires (9), which are used to make contact between the first discharge contact plate (33) and the second discharge contact plate (34).

7. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, A fan is provided above the processing box (10) for allowing exhaust gas to enter and exit through the round hole (20).

8. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The fixed box (5) has a first square groove (13) for placing the first stop block (12) inside, and a second square groove (14) for placing the second stop block (15) inside.

9. The comprehensive treatment device for volatile organic compound waste gas according to claim 1, characterized in that, The connecting rod (21) is rotatably connected to the fixing plate (22), and a fan (35) is provided outside the processing box (10).

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