A carbon fiber product exhaust gas disposal device

Abstract

This invention belongs to the technical field of waste gas treatment devices and discloses a waste gas treatment device for carbon fiber products. Existing waste gas treatment devices have many defects, such as the desorbed airflow being prone to interlayer flow and short-circuiting, uneven hot air distribution, and secondary adsorption of desorbed waste gas when passing through the lower carbon bed. The integral through-type desorption has high resistance and low hot air utilization. The technical solution of this invention includes a box body with a front opening and a hinged sealing door. Support legs are fixedly installed on the bottom surface of the box body, and a waste gas inlet pipe connected to the bottom surface of the box body is fixedly installed. This invention divides the box body into various compartments. The unidirectional airflow structure enables activated carbon filtration of the waste gas. During desorption, the activated carbon layer in each compartment can be desorbed individually. The hot air distribution in each compartment is uniform, improving the desorption effect of each activated carbon layer and avoiding secondary adsorption of the activated carbon layer. The hot air only needs to pass through one layer of activated carbon, resulting in higher hot air utilization.

Description

Technical Field

[0001] This invention relates to environmental protection engineering construction, and belongs to the technical field of waste gas treatment devices, specifically to a waste gas treatment device for carbon fiber products. Background Technology

[0002] The production and processing of carbon fiber products generates a large amount of volatile organic waste gas, which is usually treated using a process of activated carbon adsorption combined with hot air desorption. Existing waste gas treatment devices mostly employ a multi-layer activated carbon bed arrangement in series, with the desorption hot air passing through each layer of the carbon bed from top to bottom. However, this approach has several drawbacks in actual operation. 1. The desorption airflow is prone to cross-flow and short-circuit between layers, and the hot air distribution is uneven, resulting in large differences in the degree of regeneration of activated carbon in each layer, and some carbon layers are not fully regenerated; 2. When the desorbed waste gas passes through the lower carbon bed, it is easy for secondary adsorption to occur, which makes the activated carbon regeneration incomplete, the adsorption capacity drops rapidly, the replacement cycle is shortened, and the operating cost increases. 3. The integral through-type desorption has high resistance, low hot air utilization rate, and high energy consumption. At the same time, the concentration of desorbed waste gas fluctuates greatly, which can easily cause the operating conditions of the downstream treatment device to be unstable, affecting the overall treatment effect and operational safety. Summary of the Invention

[0003] To address the shortcomings of the prior art, the present invention aims to provide a carbon fiber product exhaust gas treatment device. This device divides the housing into compartments, and the unidirectional airflow structure enables activated carbon filtration of the exhaust gas. During desorption, the activated carbon layer in each compartment can be desorbed individually. The hot air is evenly distributed in each compartment, improving the desorption effect of each activated carbon layer. Furthermore, it avoids secondary adsorption by the activated carbon layer, as the hot air only needs to pass through one layer of activated carbon, resulting in higher hot air utilization.

[0004] The technical solution adopted by this carbon fiber product waste gas treatment device to solve its technical problems is as follows: A carbon fiber product exhaust gas treatment device is provided, including a box body with a front opening and a hinged sealing door. Support legs are fixedly installed on the bottom of the box body, and an exhaust gas inlet pipe communicating with it is fixedly installed on the bottom of the box body. An exhaust gas outlet pipe communicating with it is fixedly installed on the top of the box body. Control valves are installed on both the exhaust gas inlet and outlet pipes. Several activated carbon layers are arranged inside the box body, and a disassembly device for replacing the activated carbon layers is provided inside the box body. Partitions are fixedly installed between the activated carbon layers, dividing the box body into several compartments. Each partition has a unidirectional airflow structure. An air inlet structure communicating with the upper layer of a compartment is provided on one side of the box body. A control device is provided between the air inlet structure and the corresponding unidirectional airflow structure on the partition. An air outlet structure communicating with the compartment is provided on one side of the box body.

[0005] Furthermore, the air intake structure includes several hot air connecting pipes and hot air pipes. The hot air connecting pipes are located in corresponding compartments and above corresponding activated carbon layers. The hot air connecting pipes pass through the box body and are fixedly connected. The hot air connecting pipes are all connected to and communicate with the hot air pipes. A one-way air intake valve is provided on each hot air connecting pipe.

[0006] Furthermore, the air outlet structure includes several air outlet connecting pipes and air outlet pipes. The air outlet connecting pipes are located in the corresponding compartments and below the corresponding activated carbon layers. The air outlet connecting pipes pass through the box body and are fixedly connected. The air outlet connecting pipes are all connected to and communicate with the air outlet pipes. A one-way air outlet valve is provided on each air outlet connecting pipe.

[0007] Furthermore, an exhaust control valve is provided on the exhaust pipe.

[0008] Furthermore, the disassembly device includes several guide rails, which are respectively arranged on both sides of the compartment and fixedly installed on the inner wall of the box. The slots of the two guide rails in each compartment are arranged opposite to each other, and the two sides of the activated carbon layer are respectively located in the corresponding guide rails and can slide along them.

[0009] Furthermore, the unidirectional airflow structure includes several air inlets, several cover plates, several connecting rods, and several connecting frames. The air inlets are respectively opened on the partition plates and evenly distributed. The cover plates are respectively provided with corresponding air inlets. The bottom surface of the cover plate contacts and fits with the top surface of the partition plate. The bottom surface of the cover plate is fixedly connected to the upper end of the connecting rod. The connecting rod is fixedly connected to the top surface of the corresponding connecting frame. The connecting rod passes through the corresponding air inlet. A guide structure is provided in the air inlet to guide the air inlet.

[0010] Furthermore, the guide structure is a linear bearing, with connecting rods passing through the corresponding linear bearings, and the outer periphery of the linear bearings being fixedly connected to the outer periphery of the upper air hole via connecting rods.

[0011] Furthermore, the control device includes a piston block, a moving shaft, a guide frame, a spring, and a locking plate. The piston blocks are respectively disposed in the corresponding hot gas connecting pipes and are slidably fitted. One end of the moving shaft is fixedly connected to one side of the piston block. The guide frame is fixedly installed on the bottom surface of the corresponding partition plate. The moving shaft passes through the guide frame and is clearance fitted. The locking plate is fixedly installed on the other end of the moving shaft. The bottom surface of the locking plate has a wedge-shaped structure and can contact the top surface of the connecting frame. The spring is disposed between the guide frame and the piston block, and the moving shaft passes through the spring.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. An example of the present invention is a waste gas treatment device for carbon fiber products. The control valves on the waste gas inlet and outlet pipes are opened, allowing pre-treated waste gas to enter the housing through the inlet pipe. The waste gas passes through an activated carbon layer from bottom to top. The microporous structure of the activated carbon adsorbs volatile organic compounds (VOCs), odor molecules, oily vapors, and other substances in the waste gas. The waste gas then passes through a baffle plate via a one-way airflow structure. Finally, the treated gas is discharged from the housing through the outlet pipe. When the activated carbon layer is saturated, the control valves on the inlet and outlet pipes are closed. Hot air is then introduced into each compartment through the airflow structure, and the control device can close the one-way airflow structure. In this closed system, hot air can pass through the activated carbon layers in each compartment, thereby desorbing the activated carbon layers in each compartment individually. This allows the activated carbon layers to detach adsorbed volatile organic compounds (VOCs), odor molecules, oily vapors, and other substances, and finally discharge them along the exhaust structure. Compared with existing technologies, this invention divides the chamber into individual compartments, and the unidirectional exhaust structure enables activated carbon filtration of waste gas. During desorption, the activated carbon layers in each compartment can be desorbed individually, and the hot air is evenly distributed in each compartment, improving the desorption effect of each activated carbon layer. Furthermore, it avoids secondary adsorption by the activated carbon layers, as the hot air only needs to pass through one layer of activated carbon, resulting in higher hot air utilization.

[0013] 2. An example of the present invention is a carbon fiber product waste gas treatment device. In the VOCs activated carbon adsorption-desorption + catalytic combustion system, the desorption hot air heater can heat part of the filtered waste gas. Under the action of the heat-resistant air pump, the heated air can enter each compartment along the hot air connecting pipe and the hot air pipe respectively, thereby desorbing the activated carbon layer in each compartment. The one-way air inlet valve can prevent the waste gas from entering the hot air pipe during waste gas filtration and prevent the compartments from connecting.

[0014] 3. An example of the present invention is a carbon fiber product exhaust gas treatment device. The heat-resistant gas pump on the exhaust pipe is turned on, thereby generating negative pressure in the exhaust pipe, which can draw the desorbed exhaust gas into the exhaust pipe along the exhaust pipe connection pipe, and finally discharge it along the exhaust pipe. The one-way exhaust valve can prevent the desorbed gas from returning to the box after being discharged, and can also prevent the various compartments from connecting.

[0015] 4. In the example of the present invention, a carbon fiber product waste gas treatment device can close the outlet control valve during waste gas adsorption, thereby preventing the filtered waste gas from escaping along the outlet connecting pipe and the outlet pipe.

[0016] 5. An example of the present invention is a carbon fiber product exhaust gas treatment device. When the sealed door is opened, the activated carbon layer can be disassembled and installed through the guide rail, which facilitates the replacement of the activated carbon layer and is convenient to use.

[0017] 6. An example of the present invention is a carbon fiber product exhaust gas treatment device. Under the action of gravity, the cover plate can cover the corresponding upper air hole respectively. When exhaust gas is dissolved into the box, the exhaust gas moves upward and pushes the cover plate upward, so that the exhaust gas moves upward through the cover plate. The cover plate can prevent the exhaust gas from moving downward, so that the exhaust gas moves upward in one direction.

[0018] 7. In an example of the present invention, a carbon fiber product exhaust gas treatment device uses a linear bearing to guide the connecting rod and reduce the frictional resistance encountered by the connecting rod during its up-and-down movement.

[0019] 8. In an example of the present invention, a carbon fiber product exhaust gas treatment device allows a piston block to be inserted into a hot gas connecting pipe under the elastic force of a spring. When gas is discharged from the hot gas connecting pipe, the desorbed hot gas can push the piston block to move. The piston block can drive a clamping plate to move via a moving shaft. The clamping plate can be inserted between the connecting frame and the partition plate, thereby preventing the cover plate from moving upward and thus preventing the desorbed hot gas from moving upward along the one-way gas structure. When the desorbed hot gas stops flowing in, the clamping plate can be reset under the action of the spring, allowing the one-way gas structure to work. Attached Figure Description

[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the inner wall structure of the present invention; Figure 3 This is a schematic diagram of the control device's results.

[0021] In the diagram: 1. Box body; 2. Sealed door; 3. Exhaust gas inlet pipe; 4. Exhaust gas outlet pipe; 5. Activated carbon layer; 6. Partition plate; 7. Hot gas connecting pipe; 8. Hot gas pipe; 9. Exhaust gas connecting pipe; 10. Exhaust gas pipe; 11. Guide rail; 12. Upper air hole; 13. Cover plate; 14. Connecting rod; 15. Connecting frame; 16. Piston block; 17. Moving shaft; 18. Guide frame; 19. Spring; 20. Clamping plate. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] like Figure 1-3As shown, a carbon fiber product waste gas treatment device includes a housing 1. The front of the housing 1 has an opening and a hinged sealing door 2. Support legs are fixedly installed on the bottom of the housing 1. A waste gas inlet pipe 3, communicating with the inlet pipe, is fixedly installed on the bottom of the housing 1. A waste gas outlet pipe 4, communicating with the outlet pipe, is fixedly installed on the top of the housing 1. Both the waste gas inlet pipe 3 and the waste gas outlet pipe 4 are equipped with control valves. Electric ventilation butterfly valves are selected, as they feature low wind resistance, fast opening and closing, and meet sealing requirements. Alternatively, electric sealing butterfly valves can be used, offering better sealing performance but at a higher cost. Both the waste gas inlet pipe 3 and the waste gas outlet pipe 4 are conventional structural designs for a VOCs activated carbon adsorption-desorption + catalytic combustion system. The waste gas inlet pipe 3 is connected to a pretreatment device, and the waste gas outlet pipe 4... Pipe 4 is connected to the exhaust device. Several activated carbon layers 5 are installed inside the box 1. The activated carbon layers 5 are drawer structures, and granular activated carbon is placed inside the drawer structures. The bottom of the drawer structure adopts a perforated plate + stainless steel mesh structure to support the granular carbon and prevent carbon leakage. The box 1 is equipped with a disassembly device for replacing the activated carbon layers 5. The activated carbon layers 5 are fixedly installed with partitions 6, which divide the box into several compartments. Each partition 6 is equipped with a one-way upward air structure, which allows gas to pass through the partition 6 in only one direction. One side of the box 1 is equipped with an air intake structure that communicates with the upper layer of the compartment. A control device is installed between the air intake structure and the one-way upward air structure on the corresponding partition 6. One side of the box 1 is equipped with an air outlet structure that communicates with the compartment. Open the control valves on the exhaust gas inlet pipe 3 and exhaust gas outlet pipe 4. The pre-treated exhaust gas can enter the housing 1 through the exhaust gas inlet pipe 3. The exhaust gas passes through the activated carbon layer 5 from bottom to top. The microporous structure of the activated carbon 5 can adsorb volatile organic compounds (VOCs), odor molecules, oily vapors and other substances in the exhaust gas. The exhaust gas can pass through the baffle 6 through the one-way airflow structure. Finally, the treated gas can be discharged from the housing 1 through the exhaust gas outlet pipe 4. When the activated carbon layer is saturated, close the control valves on the exhaust gas inlet pipe 3 and exhaust gas outlet pipe 4. The hot gas can be introduced into each compartment through the airflow structure, and the control device can close the one-way airflow structure. The activated carbon layers in each compartment are desorbed separately, allowing the adsorbed volatile organic compounds (VOCs), odor molecules, oily vapors, and other substances to be released along the exhaust structure. Compared with existing technologies, this invention divides the housing 1 into compartments, and the unidirectional exhaust structure enables activated carbon filtration of waste gas. During desorption, the activated carbon layers in each compartment can be desorbed individually, and the hot air is evenly distributed in each compartment, improving the desorption effect of each activated carbon layer. Furthermore, it avoids secondary adsorption by the activated carbon layers, as the hot air only needs to pass through one layer of activated carbon, resulting in higher hot air utilization.

[0025] like Figure 1-3As shown, in a further preferred embodiment, the air intake structure includes several hot air connecting pipes 7 and hot air pipes 8. The hot air connecting pipes 7 are located in corresponding compartments and above corresponding activated carbon layers 5. The hot air connecting pipes 7 pass through the housing 1 and are fixedly connected. The hot air connecting pipes 7 are all connected to and interconnected with the hot air pipes 8. The hot air pipes 8 are connected to and interconnected with the desorption hot air heater. The desorption hot air heater is a conventional setting in the VOCs activated carbon adsorption desorption + catalytic combustion system. A heat-resistant air pump for driving the flow of hot air is installed on the hot air pipes 8. One-way air intake valves are installed on the hot air connecting pipes 7 respectively. In the VOCs activated carbon adsorption-desorption + catalytic combustion system, the desorption hot air heater can heat part of the filtered waste gas. Under the action of the heat-resistant air pump, the heated air can enter each compartment along the hot air connecting pipe 7 and the hot air pipe 8, thereby desorbing the activated carbon layer 5 in each compartment. The one-way air inlet valve can prevent the waste gas from entering the hot air pipe 8 during waste gas filtration, thus preventing the compartments from connecting.

[0026] like Figure 1-3 As shown, in a further preferred embodiment, the gas outlet structure includes several gas outlet connecting pipes 9 and gas outlet pipes 10. The gas outlet connecting pipes 9 are located in corresponding compartments and below corresponding activated carbon layers 5. The gas outlet connecting pipes 9 penetrate the housing 1 and are fixedly connected. Each gas outlet connecting pipe 9 is connected to and interconnected with the gas outlet pipe 10. The gas outlet connecting pipes 9 are connected to and interconnected with the catalytic combustion device in the VOCs activated carbon adsorption-desorption + catalytic combustion system. A heat-resistant gas pump for driving the flow of hot gas is installed on the gas outlet pipe 10, and a one-way gas outlet valve is installed on each gas outlet connecting pipe 9. Opening the heat-resistant gas pump on the gas outlet pipe 10 creates a negative pressure in the gas outlet pipe 10, thereby drawing the desorbed waste gas along the gas outlet connecting pipes 9 into the gas outlet pipe 10, and finally discharging it along the gas outlet pipe 10. The one-way gas outlet valves prevent the desorbed gas from returning to the housing 1 after discharge and also prevent the compartments from interconnecting.

[0027] like Figure 1-3 As shown, in a further preferred embodiment, the exhaust pipe 10 is equipped with an exhaust control valve, which is located downstream of the confluence point of the exhaust pipe 10 and can control the exhaust of each exhaust connecting pipe 9. During waste gas adsorption, the exhaust control valve can be closed, thereby preventing the filtered waste gas from escaping along the exhaust connecting pipe 9 and the exhaust pipe 10.

[0028] like Figure 1-3As shown, in a further preferred embodiment, the disassembly device includes several guide rails 11, which are respectively disposed on both sides of the compartment. The guide rails 11 are fixedly installed on the inner wall of the housing 1. The slots of the two guide rails 11 in each compartment are arranged opposite each other. The two sides of the activated carbon layer 5 are respectively located within the corresponding guide rails 11 and can slide along them. Opening the sealing door 2 allows for the disassembly and installation of the activated carbon layer 5 via the guide rails 11, facilitating replacement of the activated carbon layer and providing convenient use.

[0029] like Figure 1-3 As shown, in a further preferred embodiment, the unidirectional airflow structure includes several upper air holes 12, several cover plates 13, several connecting rods 14, and several connecting frames 15. The upper air holes 12 are respectively opened on the partition plate 6 and evenly distributed. The cover plates 13 are respectively provided with corresponding upper air holes 12. The bottom surface of the cover plate 13 contacts and fits with the top surface of the partition plate 6. The bottom surface of the cover plate 13 is provided with a sealing ring. The bottom surface of the cover plate 13 is respectively fixedly connected to the upper end of the connecting rod 14. The connecting rod 14 is respectively fixedly connected to the top surface of the corresponding connecting frame 15. The connecting rod 14 passes through the corresponding upper air hole 12. A guide structure is provided in the upper air hole 12 to guide the upper air hole 12. Under the influence of gravity, the cover plate 13 can cover the corresponding upper air hole 12. When waste gas is dissolved into the box 1, the upward movement of the waste gas can push the cover plate 13 upward, thereby allowing the waste gas to move upward through the cover plate 13. The cover plate 13 can prevent the waste gas from moving downward, thus allowing the waste gas to move upward in one direction.

[0030] like Figure 1-3 As shown, in a further preferred embodiment, the guide structure is a linear bearing, with the connecting rod 14 passing through the corresponding linear bearing. The linear bearing is a heat-resistant linear bearing, and its outer periphery is fixedly connected to the outer periphery of the upper air hole 12 via a connecting rod. The linear bearing provides guidance for the connecting rod 14 and reduces the frictional resistance experienced by the connecting rod 14 during its vertical movement.

[0031] like Figure 1-3As shown, in a further preferred embodiment, the control device includes a piston block 16, a moving shaft 17, a guide frame 18, a spring 19, and a retaining plate 20. The piston blocks 16 are respectively disposed in the corresponding hot gas connecting pipes 7 and are slidably fitted. One end of the moving shaft 17 is fixedly connected to one side of the piston block 16. The guide frame 18 is fixedly installed on the bottom surface of the corresponding partition 6. The moving shaft 17 passes through the guide frame 18 and is clearance-fitted. The retaining plate 20 is fixedly installed on the other end of the moving shaft 17. The top surface of the retaining plate 20 contacts and slides with the bottom surface of the partition 6. The bottom surface of the retaining plate 20 has a wedge-shaped structure and can contact the top surface of the connecting frame 15. The spring 19 is disposed between the guide frame 18 and the piston block 16. The moving shaft 17 passes through the spring 19. The spring 19 has a reset function. High-temperature resistant alloy springs are preferred because they meet the requirements for adjustment and have a lower cost. They can be replaced by elastic diaphragm reset, magnetic reset, and disc spring group reset methods, which have a longer service life but higher cost. Under the elastic force of spring 19, piston block 16 can be inserted into hot gas connecting pipe 7. When hot gas is discharged from hot gas connecting pipe 7, desorbed hot gas can push piston block 16 to move. Piston block 16 can drive clamping plate 20 to move through moving shaft 17. Clamping plate 20 can be inserted between connecting frame 15 and partition 6, so that cover plate 13 cannot move upward, thereby preventing desorbed hot gas from moving upward along the one-way gas structure. When the desorbed hot gas stops flowing in, clamping plate 20 can be reset under the action of spring, so that the one-way gas structure can work.

[0032] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0033] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this invention, the other technical features will not be described in detail here.

Claims

1. A waste gas treatment device for carbon fiber products, comprising a housing (1), a front opening of the housing (1) with a hinged sealing door (2), a support leg fixedly installed on the bottom surface of the housing (1), a waste gas inlet pipe (3) connected to the bottom surface of the housing (1), a waste gas outlet pipe (4) connected to the top surface of the housing (1), and control valves provided on both the waste gas inlet pipe (3) and the waste gas outlet pipe (4), characterized in that, The box (1) is provided with several activated carbon layers (5). The box (1) is provided with a disassembly device for replacing the activated carbon layers (5). The activated carbon layers (5) are fixedly installed with partitions (6). The partitions (6) divide the box into several compartments. The partitions (6) are provided with one-way air-flow structures. The box (1) is provided with an air-inlet structure that communicates with the upper part of the compartment. The air-inlet structure and the one-way air-flow structure on the corresponding partition (6) are provided with a control device. The box (1) is provided with an air-outlet structure that communicates with the compartment.

2. The waste gas treatment device for carbon fiber products according to claim 1, characterized in that, The air intake structure includes several hot air connecting pipes (7) and hot air pipes (8). The hot air connecting pipes (7) are located in the corresponding compartments and above the corresponding activated carbon layers (5). The hot air connecting pipes (7) pass through the box body (1) and are fixedly connected. The hot air connecting pipes (7) are all connected to the hot air pipes (8) and communicate with each other. One-way air intake valves are provided on the hot air connecting pipes (7).

3. The waste gas treatment device for carbon fiber products according to claim 1, characterized in that, The air outlet structure includes several air outlet connecting pipes (9) and air outlet pipes (10). The air outlet connecting pipes (9) are located in the corresponding compartments and are located below the corresponding activated carbon layers (5). The air outlet connecting pipes (9) pass through the box body (1) and are fixedly connected. All air outlet connecting pipes (9) are connected to and communicate with the air outlet pipes (10). One-way air outlet valves are provided on the air outlet connecting pipes (9).

4. The carbon fiber product waste gas treatment device according to claim 3, characterized in that, An air outlet control valve is provided on the air outlet pipe (10).

5. The waste gas treatment device for carbon fiber products according to claim 1, characterized in that, The disassembly device includes several guide rails (11), which are respectively set on both sides of the compartment. The guide rails (11) are respectively fixedly installed on the inner wall of the box (1). The slots of the two guide rails (11) in each compartment are arranged opposite to each other. The two sides of the activated carbon layer (5) are respectively located in the corresponding guide rails (11) and can slide along them.

6. The waste gas treatment device for carbon fiber products according to claim 2, characterized in that, The unidirectional airflow structure includes several air inlets (12), several cover plates (13), several connecting rods (14), and several connecting frames (15). The air inlets (12) are opened on the partition plate (6) and are evenly distributed. The cover plates (13) are respectively provided with corresponding air inlets (12). The bottom surface of the cover plate (13) is in contact with the top surface of the partition plate (6). The bottom surface of the cover plate (13) is fixedly connected to the upper end of the connecting rod (14). The connecting rod (14) is fixedly connected to the top surface of the corresponding connecting frame (15). The connecting rod (14) passes through the corresponding air inlet (12). The air inlet (12) is provided with a guide structure to guide the air inlet (12).

7. The waste gas treatment device for carbon fiber products according to claim 6, characterized in that, The guide structure is a linear bearing, and the connecting rod (14) passes through the corresponding linear bearing. The outer periphery of the linear bearing is fixedly connected to the outer periphery of the upper air hole (12) by the connecting rod.

8. A carbon fiber product waste gas treatment device according to any one of claims 6 and 7, characterized in that, The control device includes a piston block (16), a moving shaft (17), a guide frame (18), a spring (19), and a clamping plate (20). The piston blocks (16) are respectively set in the corresponding hot gas connecting pipes (7) and are slidably fitted. One end of the moving shaft (17) is fixedly connected to one side of the piston block (16). The guide frame (18) is fixedly installed on the bottom surface of the corresponding partition (6). The moving shaft (17) passes through the guide frame (18) and is clearance fitted. The clamping plate (20) is fixedly installed on the other end of the moving shaft (17). The bottom surface of the clamping plate (20) is a wedge-shaped structure and can contact the top surface of the connecting frame (15). The spring (19) is set between the guide frame (18) and the piston block (16). The moving shaft (17) passes through the spring (19).

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