Extruder exhaust gas recovery treatment device

Abstract

The application provides an extruder waste gas recovery treatment device, and belongs to the technical field of waste gas treatment. The device comprises a rack, a rotating disc, a plurality of partition plates, a plurality of activated carbon modules and a set of conveying mechanisms. The rotating disc is vertically arranged on the rack. A driving assembly for driving the rotating disc to rotate is arranged on the rack. The plurality of partition plates are fixed equidistantly on the inner side of the rotating disc. Each activated carbon module is located between two adjacent partition plates. One end of the conveying mechanism is connected to the exhaust port of the extruder, and the other end is connected to the rack. The rack is divided into an adsorption area and a circulating cleaning area at a position directly above the rotating disc. The conveying mechanism is used for pumping the waste gas of the extruder into the activated carbon module directly below the adsorption area. A cleaning assembly for flushing and cleaning the activated carbon module directly below the circulating cleaning area is arranged on the rack. The application solves the interruption problem of waste gas treatment, greatly improves the waste gas treatment efficiency, and realizes the automation and continuity of waste gas recovery treatment.

Description

An extruder exhaust gas recovery and treatment device Technical Field

[0001] This application belongs to the technical field of waste gas treatment, and more specifically, relates to an extruder waste gas recovery and treatment device. Background Technology

[0002] A plastic extruder is a device that processes plastic powder or plastic granules into plastic tubes. It uses a screw of a specific shape to rotate in a heated barrel, extruding the plastic fed from the hopper forward, so that the plastic is uniformly plasticized (i.e. melted), and then extruded into continuous plastic layers or plastic tubes of various shapes through the die head and different shaped molds.

[0003] During the operation of an extruder, some harmful gases are generated. Common waste gas treatment devices include filter boxes with activated carbon plates. The waste gas generated by the extruder is drawn into the filter box, purified by adsorption by the activated carbon plates, and then discharged.

[0004] However, the activated carbon plates need to be replaced after they become saturated with adsorption, which means that the waste gas treatment has to be stopped every once in a while, and then restarted after the activated carbon plates are replaced, which reduces the treatment efficiency. Summary of the Invention

[0005] The purpose of this application is to provide an extruder exhaust gas recovery and treatment device to solve the technical problem in the prior art that the activated carbon plate needs to be replaced after adsorption saturation, which causes the exhaust gas treatment to be stopped every once in a while, and then restarted after the activated carbon plate is replaced, thus reducing the treatment efficiency.

[0006] To achieve the above objectives, the technical solution adopted in this application is: to provide an extruder exhaust gas recovery and treatment device, comprising:

[0007] frame;

[0008] A turntable is vertically rotatably mounted on the frame, and the turntable has openings at the top and bottom; a drive assembly for rotating the turntable is mounted on the frame.

[0009] Multiple partition plates are fixed at equal intervals to the inside of the turntable, dividing the internal space of the turntable into multiple equal parts;

[0010] Multiple activated carbon modules are disposed inside the turntable, with each activated carbon module located between two adjacent partition plates; and

[0011] The conveying mechanism is connected at one end to the extruder exhaust port and at the other end to the frame;

[0012] The frame, located directly above the turntable, is divided into an adsorption zone and a circulation cleaning zone. The conveying mechanism is used to draw the exhaust gas from the extruder into the activated carbon module directly below the adsorption zone. The frame is equipped with a cleaning component for rinsing and cleaning the activated carbon module directly below the circulation cleaning zone.

[0013] In one possible implementation, based on the above technical solutions, the circulating cleaning zone sequentially includes a rinsing zone, a drying zone, and a cooling zone along the rotation direction of the turntable; the cleaning assembly includes:

[0014] A flushing pipe is installed in the flushing area. One end of the flushing pipe is connected to an external water source via a pump body, and the other end faces downward and has a nozzle.

[0015] The recycling bin has an opening at the top and is located directly below the flushing pipe;

[0016] A dryer, disposed within the drying zone, is used to dry the activated carbon module directly below the drying zone; and

[0017] A cooling fan is installed in the cooling zone to cool the activated carbon module directly below the cooling zone.

[0018] In one possible implementation, based on the above technical solutions, the driving component includes:

[0019] A drive motor is mounted on the frame;

[0020] The first bevel gear is coaxially fixed on the output shaft of the drive motor; and

[0021] The second bevel gear is coaxially fixed to the top of the rotating shaft of the turntable and meshes with the first bevel gear.

[0022] In one possible implementation, based on the above technical solutions, the diameter of the second bevel gear is at least twice the diameter of the first bevel gear.

[0023] In one possible implementation, based on the above technical solutions, the conveying mechanism includes:

[0024] A spray box having an exhaust pipe for connecting to the exhaust port of the extruder, and a spray assembly for absorbing liquid spraying onto the internal exhaust gas;

[0025] The delivery pipe is connected to the spray box;

[0026] A gas-liquid separator, connected to the conveying pipe, is used to separate the mixed absorbent liquid and waste gas;

[0027] An air supply pipe is connected to the gas-liquid separator; and

[0028] A fixing cover is fixed on the frame and located within the adsorption zone. The fixing cover is fastened to the activated carbon module directly below the adsorption zone, and the top of the fixing cover is connected to the gas supply pipe.

[0029] In one possible implementation, based on the above technical solutions, the spray assembly includes:

[0030] The spray pipe has one end connected to an external absorbent liquid source via a pump body, and the other end splits into a multi-pipe structure and connects to the top of the spray box; and

[0031] Multiple spray heads are provided, each corresponding to one end of the spray pipe located inside the spray box; the spray heads are disposed at the inner end of the spray pipe.

[0032] In one possible implementation, based on the above technical solutions, the conveying pipe is inclined downwards from the spray box to the gas-liquid separation box; multiple guide plates are respectively provided on the opposite side walls of the conveying pipe, and the guide plates on different side walls of the conveying pipe are staggered, so that all the guide plates divide the internal space of the conveying pipe into a serpentine distribution.

[0033] In one possible implementation, based on the above technical solutions, the gas-liquid separation chamber is equipped with a filter assembly for filtering the absorbent liquid, the filter assembly comprising:

[0034] A filter screen is installed inside the gas-liquid separation chamber;

[0035] A honeycomb activated carbon plate is disposed inside the gas-liquid separation chamber and located below the filter screen; and

[0036] Two brackets are fixed inside the gas-liquid separation box and are used to support the filter screen and the honeycomb activated carbon plate, respectively.

[0037] In one possible implementation, based on the above technical solutions, the bottom of the gas-liquid separator is provided with a cooling pipe and a reflux assembly. The two ends of the cooling pipe extend out of the gas-liquid separator and are connected to an external cooling liquid circulation tower. The reflux assembly is connected between the bottom of the gas-liquid separator and the spray pipe, and is used to pump the absorbent liquid at the bottom of the gas-liquid separator into the spray pipe.

[0038] In one possible implementation, based on the above technical solutions, the recirculation component includes:

[0039] A reflux pump is located outside the gas-liquid separator and connected to the bottom of one side of the gas-liquid separator; and

[0040] The return pipe is connected at one end to the return pump and at the other end to the spray pipe.

[0041] The beneficial effects of the extruder exhaust gas recovery and treatment device provided in this application are as follows: Compared with the prior art, this application uses a conveying mechanism to pump the exhaust gas from the extruder into an activated carbon module directly below the adsorption zone. The activated carbon is used to purify the exhaust gas. After the activated carbon module is saturated, the drive component drives the turntable to rotate, causing the next activated carbon module to rotate into the adsorption zone to continue the exhaust gas purification operation. At the same time, the saturated activated carbon module rotates to the circulation cleaning zone, where the cleaning component cleans the activated carbon module. It can then continue to rotate into the adsorption zone for purification operations. This solves the problem of interruption in exhaust gas treatment, greatly improves the efficiency of exhaust gas treatment, and realizes the automation and continuity of exhaust gas recovery and treatment. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 is a schematic diagram of the structure of an extruder exhaust gas recovery and treatment device provided in an embodiment of this application;

[0044] Figure 2 is a schematic diagram of the structure of the driving component and the cleaning component provided in an embodiment of this application;

[0045] Figure 3 is a partial cross-sectional view of the delivery pipe and guide plate provided in an embodiment of this application;

[0046] Figure 4 is a partial cross-sectional view of the gas-liquid separator and filter assembly provided in an embodiment of this application.

[0047] The labels for the attached figures are as follows:

[0048] 1. Frame; 11. Adsorption Zone; 12. Circulation Cleaning Zone; 121. Rinsing Zone; 122. Drying Zone; 123. Cooling Zone;

[0049] 2. Turntable;

[0050] 3. Drive assembly; 31. Drive motor; 32. First bevel gear; 33. Second bevel gear;

[0051] 4. Divider;

[0052] 5. Activated carbon module;

[0053] 6. Conveying mechanism; 61. Spray box; 611. Exhaust pipe; 62. Spray assembly; 621. Spray pipe; 63. Conveying pipe; 631. Guide plate; 64. Gas-liquid separator; 65. Air supply pipe; 66. Fixing cover;

[0054] 7. Cleaning components; 71. Flushing pipe; 72. Recycling bin; 73. Dryer; 74. Cooling fan;

[0055] 8. Filter assembly; 81. Filter screen; 82. Honeycomb activated carbon plate; 83. Support frame;

[0056] 9. Cooling pipes. Detailed Implementation

[0057] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this application and are not intended to limit this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] It should be further noted that the accompanying drawings and embodiments of this application mainly describe the concept of this application. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this application, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0059] When a component is referred to as "connected to" or "set on" another component, it can be directly on or indirectly on that other component.

[0060] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0061] The present application provides a description of an extruder exhaust gas recovery and treatment device.

[0062] As shown in Figures 1 and 2, one embodiment of this application provides an extruder exhaust gas recovery and treatment device, including a frame 1, a turntable 2, multiple partition plates 4, multiple activated carbon modules 5, and a set of conveying mechanisms 6.

[0063] The turntable 2 is vertically rotatable on the frame 1, with openings at the top and bottom. A drive assembly 3 for rotating the turntable 2 is installed on the frame 1. Multiple partition plates 4 are fixed at equal intervals on the inner side of the turntable 2, dividing the internal space of the turntable 2 into multiple equal parts. Multiple activated carbon modules 5 are installed inside the turntable 2, with each activated carbon module 5 located between two adjacent partition plates 4. One end of the conveying mechanism 6 is connected to the exhaust port of the extruder, and the other end is connected to the frame 1.

[0064] The frame 1, located directly above the turntable 2, is divided into an adsorption zone 11 and a circulation cleaning zone 12. The conveying mechanism 6 is used to pump the exhaust gas from the extruder into the activated carbon module 5 directly below the adsorption zone 11. A cleaning component 7 is provided on the frame 1 to rinse and clean the activated carbon module 5 directly below the circulation cleaning zone 12.

[0065] This embodiment provides an extruder exhaust gas recovery and treatment device. Compared with the prior art, the exhaust gas from the extruder is drawn into the activated carbon module 5 directly below the adsorption zone 11 by the conveying mechanism 6. The activated carbon is used to purify the exhaust gas. After the activated carbon module 5 is saturated, the drive component 3 drives the turntable 2 to rotate, so that the next activated carbon module 5 rotates to the adsorption zone 11 to continue the exhaust gas purification operation. At the same time, the saturated activated carbon module 5 rotates to the circulation cleaning zone 12, where the cleaning component 7 cleans the activated carbon module 5. It can then continue to rotate to the adsorption zone 11 for purification operation. This solves the problem of interruption in exhaust gas treatment, greatly improves the efficiency of exhaust gas treatment, and realizes the automation and continuity of exhaust gas recovery and treatment.

[0066] As shown in Figures 1 and 2, this application provides another specific implementation method based on the above-described implementation method as follows:

[0067] The circulating cleaning zone 12 includes, in sequence along the rotation direction of the turntable 2, a rinsing zone 121, a drying zone 122, and a cooling zone 123; the cleaning assembly 7 includes a rinsing pipe 71, a recycling box 72, a dryer 73, and a cooling fan 74.

[0068] A rinsing pipe 71 is installed on the rinsing zone 121. One end of the rinsing pipe 71 is connected to an external water source through a pump body, and the other end faces downward and has a nozzle. The top opening of the recovery box 72 is located directly below the rinsing pipe 71. The dryer 73 is installed in the drying zone 122 and is used to dry the activated carbon module 5 directly below the drying zone 122. The cooling fan 74 is installed in the cooling zone 123 and is used to cool the activated carbon module 5 directly below the cooling zone 123.

[0069] In the rinsing zone 121, the rinsing pipe 71 is connected to an external water source through a pump body. The activated carbon module 5 is rinsed using a nozzle, which can effectively remove impurities and pollutants adsorbed by the activated carbon module 5 and restore the adsorption performance of the activated carbon. The recovery box 72 is used to recover the rinsing liquid and the impurities washed off.

[0070] The dryer 73 in drying zone 122 can quickly remove moisture from the activated carbon module 5, ensuring the activated carbon reaches a suitable degree of dryness and preparing it for subsequent adsorption. The cooling fan 74 in cooling zone 123 cools the dried activated carbon module 5 with airflow, lowering its temperature and preventing high temperatures from affecting its adsorption efficiency. This zoned and targeted cleaning method ensures a more thorough and efficient cleaning of the activated carbon module 5, further improving the overall waste gas treatment efficiency and stability of the device.

[0071] As shown in Figures 1 and 2, this application provides another specific implementation method based on the above-described implementation method as follows:

[0072] The drive assembly 3 includes a drive motor 31, a first bevel gear 32, and a second bevel gear 33. The drive motor 31 is mounted on the frame 1. The first bevel gear 32 is coaxially fixed on the output shaft of the drive motor 31. The second bevel gear 33 is coaxially fixed on the top of the rotating shaft of the turntable 2 and meshes with the first bevel gear 32.

[0073] The drive motor 31 serves as the power source, providing stable power output. The drive motor 31 drives the first bevel gear 32 to rotate, which in turn drives the second bevel gear 33 and the turntable 2 to rotate. Bevel gear transmission offers advantages such as high transmission efficiency, compact structure, and low noise. By rationally designing the parameters of the bevel gears, the rotational speed and direction of the turntable 2 can be precisely controlled, meeting the exhaust gas treatment requirements under different operating conditions.

[0074] As shown in Figures 1 and 2, this application provides another specific implementation method based on the above-described implementation method as follows:

[0075] The diameter of the second bevel gear 33 is at least twice the diameter of the first bevel gear 32.

[0076] By using the design of two bevel gears with different diameters, the drive assembly 3 achieves a speed reduction and torque increase effect. When the drive motor 31 outputs the same power, the larger diameter second bevel gear 33 can reduce the rotational speed of the turntable 2 while increasing the torque output; the lower rotational speed makes the turntable 2 rotate more smoothly, reducing vibration and noise, and improving the operational stability of the device.

[0077] As shown in Figures 1 and 2, this application provides another specific implementation method based on the above-described implementation method as follows:

[0078] The conveying mechanism 6 includes a spray box 61, a conveying pipe 63, a gas-liquid separator 64, an air supply pipe 65, and a fixed cover 66. The spray box 61 has an exhaust pipe 611 for connecting to the exhaust port of the extruder, and a spray assembly 62 for absorbing liquid spraying onto the internal exhaust gas is provided on the spray box 61; the conveying pipe 63 is connected to the spray box 61.

[0079] The gas-liquid separator 64 is connected to the conveying pipe 63 and is used to separate the mixed absorbent liquid and waste gas; the air supply pipe 65 is connected to the gas-liquid separator 64; the fixing cover 66 is fixed on the frame 1 and located in the adsorption zone 11. The fixing cover 66 is fastened to the activated carbon module 5 directly below the adsorption zone 11, and the top of the fixing cover 66 is connected to the air supply pipe 65.

[0080] The spray box 61 is connected to the exhaust port of the extruder through the exhaust pipe 611, and the exhaust gas entering the spray box 61 is sprayed with absorbent liquid through the spray assembly 62; this can initially remove some pollutants and harmful substances in the exhaust gas, reduce the concentration of the exhaust gas, and reduce the adsorption burden on the subsequent activated carbon module 5.

[0081] The conveying pipe 63 transports the sprayed waste gas to the gas-liquid separation box 64, which can effectively separate the mixed absorbent liquid and waste gas. The gas supply pipe 65 transports the separated waste gas to the fixed cover 66, which is fastened to the activated carbon module 5 directly below the adsorption zone 11, so that the waste gas can be concentratedly adsorbed and treated by the activated carbon module 5. The entire conveying mechanism 6 forms a complete waste gas conveying and pretreatment system, which improves the effect and efficiency of waste gas recovery and treatment.

[0082] As shown in Figure 1, this application provides another specific implementation method based on the above-described implementation method as follows:

[0083] The spray assembly 62 includes a spray pipe 621 and multiple spray heads (not shown in the figure); one end of the spray pipe 621 is connected to an external absorbent liquid source through a pump body, and the other end is split into a multi-pipe structure and connected to the top of the spray box 61; the multiple spray heads correspond one-to-one with the end of the spray pipe 621 located inside the spray box 61; the spray heads are located at the inner end of the spray pipe 621.

[0084] The absorbent liquid from the external absorbent liquid source is pumped into the spray pipe 621 by the pump body and sprayed out from each spray head, so that the absorbent liquid can be evenly sprayed into the exhaust gas in the spray box 61, which can more effectively absorb pollutants and harmful substances in the exhaust gas and improve the pretreatment effect of the exhaust gas.

[0085] As shown in Figures 1 and 3, this application provides another specific implementation method based on the above-described implementation method as follows:

[0086] The conveying pipe 63 is inclined downward from the spray box 61 to the gas-liquid separator 64; multiple guide plates 631 are respectively provided on the opposite side walls inside the conveying pipe 63, and the guide plates 631 on different side walls inside the conveying pipe 63 are staggered, and all the guide plates 631 divide the internal space of the conveying pipe 63 into a serpentine distribution.

[0087] First, the downward tilt allows the exhaust gas to flow naturally downwards during transport, which is beneficial for liquid discharge and reduces the accumulation of liquid in the transport pipe 63.

[0088] Secondly, the baffle plate 631 increases the flow path and residence time of the exhaust gas within the conveying pipe 63, allowing for more thorough mixing and reaction between the exhaust gas and the absorbent liquid, further improving the pretreatment effect of the exhaust gas. Simultaneously, the serpentine distribution of the conveying pipe 63 also serves as a buffer and energy dissipator, reducing pressure fluctuations and noise during exhaust gas flow, ensuring the stability and safety of the exhaust gas delivery.

[0089] As shown in Figure 4, this application provides another specific implementation method based on the above implementation method as follows:

[0090] The gas-liquid separation chamber 64 is equipped with a filter assembly 8 for filtering the absorbent liquid. The filter assembly 8 includes a filter screen 81, a honeycomb activated carbon plate 82, and two supports 83. The filter screen 81 is disposed inside the gas-liquid separation chamber 64. The honeycomb activated carbon plate 82 is disposed inside the gas-liquid separation chamber 64 and located below the filter screen 81. The two supports 83 are fixed inside the gas-liquid separation chamber 64 and are used to support the filter screen 81 and the honeycomb activated carbon plate 82, respectively.

[0091] The filter screen 81 can initially filter larger particulate impurities in the absorbent liquid, while the honeycomb activated carbon plate 82 has a large specific surface area and adsorption capacity, which can further adsorb small particles and harmful substances in the absorbent liquid, improve the purification level of the absorbent liquid, and realize the recycling of the absorbent liquid.

[0092] As shown in Figures 1 and 4, this application provides another specific implementation method based on the above-described implementation method as follows:

[0093] The bottom of the gas-liquid separator 64 is provided with a cooling pipe 9 and a reflux assembly. The two ends of the cooling pipe 9 extend out of the gas-liquid separator 64 and are connected to an external cooling liquid circulation tower. The reflux assembly is connected between the bottom of the gas-liquid separator 64 and the spray pipe 621 and is used to pump the absorbent liquid at the bottom of the gas-liquid separator 64 into the spray pipe 621.

[0094] The cooling pipe 9 cools the absorbent liquid in the gas-liquid separator 64, lowering its temperature to improve its absorption capacity for pollutants in the exhaust gas and reduce evaporation, thus saving resources. The reflux assembly pumps the absorbent liquid at the bottom of the gas-liquid separator 64 into the spray pipe 621, enabling the recycling of the absorbent liquid.

[0095] As shown in Figure 1, this application provides another specific implementation method based on the above-described implementation method as follows:

[0096] The reflux assembly includes a reflux pump and a reflux pipe (not shown in the figure); the reflux pump is located outside the gas-liquid separator 64 and connected to the bottom of one side of the gas-liquid separator 64; one end of the reflux pipe is connected to the reflux pump and the other end is connected to the spray pipe 621.

[0097] The reflux pump can provide sufficient power to extract the absorbent liquid from the bottom of the gas-liquid separator 64 and then transport it to the spray pipe 621 through the reflux pipe, effectively realizing the recycling of the absorbent liquid.

[0098] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0099] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0100] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. An extruder exhaust gas recovery and treatment device, characterized in that, include: A frame (1); a turntable (2), which is vertically rotatably mounted on the frame (1), with openings at the top and bottom; a drive assembly (3) for rotating the turntable (2) is mounted on the frame (1); multiple partition plates (4), which are fixed at equal intervals on the inner side of the turntable (2) and divide the internal space of the turntable (2) into multiple parts; multiple activated carbon modules (5), which are mounted inside the turntable (2), with each activated carbon module (5) located between two adjacent partition plates (4); The conveying mechanism (6) is connected at one end to the exhaust port of the extruder and at the other end to the frame (1). The frame (1) is located directly above the turntable (2) and is divided into an adsorption zone (11) and a circulation cleaning zone (12). The conveying mechanism (6) is used to pump the exhaust gas of the extruder into the activated carbon module (5) directly below the adsorption zone (11). A cleaning component (7) is provided on the frame (1) for rinsing and cleaning the activated carbon module (5) directly below the circulation cleaning zone (12). The circulation cleaning zone (12) includes a rinsing zone (121) and a drying zone (122) in sequence along the rotation direction of the turntable (2). The cleaning assembly (7) includes: a flushing pipe (71) disposed on the flushing area (121), one end of the flushing pipe (71) being connected to an external water source via a pump body, and the other end facing downwards and having a nozzle; a recycling box (72) with an opening at the top and located directly below the flushing pipe (71); a dryer (73) disposed in the drying area (122) for drying the activated carbon module (5) directly below the drying area (122); and a cooling fan (74) disposed in the cooling area (123) for cooling the activated carbon module (5) directly below the cooling area (123).

2. The extruder exhaust gas recovery and treatment device as described in claim 1, characterized in that, The drive assembly (3) includes: a drive motor (31) mounted on the frame (1); a first bevel gear (32) coaxially fixed on the output shaft of the drive motor (31); and a second bevel gear (33) coaxially fixed on the top of the rotating shaft of the turntable (2) and meshing with the first bevel gear (32).

3. The extruder exhaust gas recovery and treatment device as described in claim 2, characterized in that, The diameter of the second bevel gear (33) is at least twice the diameter of the first bevel gear (32).

4. The extruder exhaust gas recovery and treatment device as described in claim 1, characterized in that, The conveying mechanism (6) includes: a spray box (61) having an exhaust pipe (611) for connecting to the exhaust port of the extruder, and a spray assembly (62) for spraying the internal waste gas with absorbent liquid; a conveying pipe (63) connected to the spray box (61); a gas-liquid separation box (64) connected to the conveying pipe (63) for separating the mixed absorbent liquid and waste gas; an air supply pipe (65) connected to the gas-liquid separation box (64); and a fixing cover (66) fixed on the frame (1) and located in the adsorption zone (11), the fixing cover (66) being fastened to the activated carbon module (5) directly below the adsorption zone (11), and the top of the fixing cover (66) being connected to the air supply pipe (65).

5. The extruder exhaust gas recovery and treatment device as described in claim 4, characterized in that, The spray assembly (62) includes: a spray pipe (621), one end of which is connected to an external absorbent liquid source via a pump body, and the other end of which is split into a multi-pipe structure and connected to the top of the spray box (61); and multiple spray heads, each corresponding to one end of the spray pipe (621) located inside the spray box (61); the spray heads are disposed inside the spray pipe (621).

6. The extruder exhaust gas recovery and treatment device as described in claim 4, characterized in that, The conveying pipe (63) is inclined downward from the spray box (61) to the gas-liquid separator (64); multiple guide plates (631) are respectively provided on the opposite side walls inside the conveying pipe (63), and the guide plates (631) on different side walls inside the conveying pipe (63) are staggered, and all the guide plates (631) divide the internal space of the conveying pipe (63) into a serpentine distribution.

7. The extruder exhaust gas recovery and treatment device as described in claim 4, characterized in that, The gas-liquid separation box (64) is provided with a filter assembly (8) for filtering the absorbent liquid. The filter assembly (8) includes: a filter screen (81) disposed in the gas-liquid separation box (64); a honeycomb activated carbon plate (82) disposed in the gas-liquid separation box (64) and located below the filter screen (81); and two brackets (83) fixed in the gas-liquid separation box (64) and used to support the filter screen (81) and the honeycomb activated carbon plate (82) respectively.

8. The extruder exhaust gas recovery and treatment device as described in claim 5, characterized in that, The bottom of the gas-liquid separator (64) is provided with a cooling pipe (9) and a reflux assembly. The cooling pipe (9) extends out of the gas-liquid separator (64) at both ends and is connected to an external cooling liquid circulation tower. The reflux assembly is connected between the bottom of the gas-liquid separator (64) and the spray pipe (621) and is used to pump the absorbent liquid at the bottom of the gas-liquid separator (64) into the spray pipe (621).

9. The extruder exhaust gas recovery and treatment device as described in claim 8, characterized in that, The reflux assembly includes: a reflux pump, disposed outside the gas-liquid separator (64) and connected to the bottom of one side of the gas-liquid separator (64); and a reflux pipe, one end of which is connected to the reflux pump and the other end of which is connected to the spray pipe (621).

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