A multi-stage adsorption device for treating VOCs exhaust gas

Abstract

The utility model discloses a kind of VOCs waste gas multistage adsorption treatment device, including air inlet pipe, adsorption treatment box, electric air valve valve, air outlet pipe, induced draft fan, exhaust chimney, high-temperature steam pipe, recovery pipe, cooling recovery tank;Adsorption treatment box front end is equipped with air inlet pipe, adsorption treatment box rear end is equipped with air outlet pipe, air outlet pipe is connected exhaust chimney by induced draft fan, adsorption treatment box upper rear end is equipped with recovery pipe, recovery pipe connects cooling recovery tank;Waste gas enters adsorption treatment box by air inlet pipe, VOCs waste gas carries out filter adsorption treatment in adsorption treatment box, after real-time detection gas reaches emission standard again by exhaust chimney, when adsorption treatment box long time work adsorbent is in saturated state, high-temperature steam pipe is passed into high-temperature steam to adsorption treatment box, high-temperature steam reduces desorption to adsorbent, after desorption gas enters cooling recovery tank by recovery pipe, obtain liquid organic solvent, realize the comprehensive utilization of resources.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas treatment technology, and specifically relates to a multi-stage adsorption treatment device for VOCs waste gas. Background Technology

[0002] Volatile organic compounds (VOCs) are one of the main air pollutants generated during industrial production. Adsorption is a widely used VOCs treatment technology. Traditional VOCs adsorption devices generally adopt a single adsorption layer design. A single adsorption layer lacks buffering capacity and is prone to rapid penetration, resulting in instantaneous emissions exceeding standards. When the adsorption layer reaches saturation and penetration, the saturation of the adsorption material is not uniform, resulting in a waste of adsorption capacity. Frequent replacement or regeneration also increases operation and maintenance costs.

[0003] According to the prior art, a combustion method for treating VOC waste gas is disclosed in the patent application number CN120268143A. The system includes a waste gas recovery mechanism, a filter box and a particle recovery mechanism. The waste gas recovery mechanism is used to recover VOC waste gas and transports the VOC waste gas to the filter box.

[0004] According to the prior art, a device and method for treating VOC waste gas with activated carbon, with the prior art authorization publication number CN121130591A, is described. This device softens the crust and oil film by high-temperature nitrogen injection and cleans the activated carbon filter block by scraping it with a soft scraper wire. However, it is difficult to reduce and desorb the adsorbent in the activated carbon filter block by mechanical cleaning.

[0005] A search revealed a VOCs waste gas adsorption device with the prior art authorization announcement number CN223221231U. This device decomposes the moisture in the waste gas into water droplets through a condenser tube, and then re-adsorbs the moisture in the waste gas through a molecular sieve plate. When the waste gas passes through the adsorption plate, uneven airflow distribution occurs in some areas. The adsorbent in the middle of the adsorption plate becomes saturated, while the adsorbent at the edges has not yet taken effect, resulting in a waste of adsorption capacity. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a multi-stage adsorption treatment device for VOCs waste gas. VOCs waste gas enters the adsorption treatment box through the inlet pipe. The VOCs waste gas is filtered and adsorbed in the adsorption treatment box. After real-time monitoring, the gas meets the emission standards. It then passes through the outlet pipe and the induced draft fan, which ensures gas flow, and is discharged through the exhaust chimney. When the adsorption treatment box has been working for a long time and the adsorbent is saturated, the electric air valves on the inlet and outlet pipes are closed. High-temperature steam is introduced into the adsorption treatment box through the high-temperature steam pipe. The high-temperature steam reduces and desorbs the adsorbent. The desorbed gas enters the cooling and recovery box through the recovery pipe. The gas is cooled and liquefied in the cooling and recovery box to obtain a liquid organic solvent. The solvent is then further purified by distillation to meet industrial use standards, realizing the closed-loop utilization of resources.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A multi-stage adsorption treatment device for VOCs waste gas includes an inlet pipe, an adsorption treatment box, an electric air valve, an outlet pipe, an induced draft fan, an exhaust chimney, a high-temperature steam pipe, a recovery pipe, and a cooling recovery box. The adsorption treatment box has an inlet pipe at its front end and an outlet pipe at its rear end. A gas detector is installed in the outlet pipe, and an induced draft fan is installed at the rear end of the outlet pipe. The outlet pipe is connected to the exhaust chimney through the induced draft fan. A high-temperature steam pipe is installed at the front end of the upper part of the adsorption treatment box, and a recovery pipe is installed at the rear end of the upper part of the adsorption treatment box. The recovery pipe is connected to the cooling recovery box. Electric air valves are installed at all pipe connections.

[0009] The adsorption treatment box includes a box body, an air intake fan, a filtration mechanism, a steam branch pipe, a flow guiding mechanism, activated carbon adsorption plates, a maintenance plate, a transmission mechanism, and a protective cover. The air intake fan is located at the front end of the box body, and the filtration mechanism is located behind the air intake fan. A steam branch pipe is located at the rear end of the filtration mechanism, and a flow guiding mechanism and activated carbon adsorption plates are located behind the steam branch pipe. Multiple sets of flow guiding mechanisms and activated carbon adsorption plates are arranged inside the box body. A maintenance plate is located on the side of the flow guiding mechanism and activated carbon adsorption plates, and the maintenance plate is also located on the side wall of the box body. The transmission mechanism is located on the other side of the side wall of the box body and is connected to the flow guiding mechanism. A protective cover is provided at the connection between the transmission mechanism and the flow guiding mechanism. The air intake fan ensures the flow of exhaust gas. After the exhaust gas enters the box body, it is filtered by the filtration mechanism. The flow guiding mechanism evenly disperses the exhaust gas onto the activated carbon adsorption plates. Multiple sets of activated carbon adsorption plates adsorb organic impurities in the exhaust gas. The transmission mechanism provides power to the flow guiding mechanism. The protective cover prevents the mechanism from being exposed and contaminated. The internal mechanism of the box body is regularly inspected and replaced through the maintenance plate.

[0010] The filtration mechanism includes a filter plate support and filter plates. The filter plate support is slidably connected to the housing. The filter plate support has multiple sets of sliding grooves in the middle. The filter plates have multiple sets and are slidably connected to the filter plate support within the sliding grooves in the filter plate support. Multiple sets of filter plates can be simultaneously pulled out of the housing through the filter plate support, allowing for regular cleaning and replacement of the filter plates to prevent clogging.

[0011] The transmission mechanism includes a motor, a transmission shaft I, and a helical gear I; the motor is mounted on the side wall of the housing, and the output end of the motor is provided with a transmission shaft I, which is equipped with multiple sets of helical gears I.

[0012] The flow guiding mechanism includes a frame, a flow guiding plate, a swing mechanism, and a drive shaft II. The flow guiding plate is provided in multiple sets, and the drive shaft II is located at the center of the flow guiding plate. The drive shaft II passes through the frame and is rotatably connected to the frame. One set of drive shaft II is connected to the swing mechanism, which is located on one side of the frame. The swing mechanism causes the flow guiding plate to swing up and down, so as to uniformly guide the gas inside the box to the activated carbon adsorption plate.

[0013] The swing mechanism includes a support frame, helical gear II, connecting rod, sliding shaft, movable slide plate, connecting slider, rack, gear, limiting slide, synchronous pulley, and synchronous belt. The support frame is fixed on the housing. Helical gear II is mounted on the support frame and rotatably connected to it. Helical gear II also meshes with helical gear I of the transmission mechanism. A connecting rod is provided at the lower end of helical gear II, and a sliding shaft is provided at the other end of the connecting rod. The sliding shaft is located in the movable slide plate and slidably connected to it. Two sets of connecting sliders are provided under the movable slide plate. One set of connecting sliders is located in the limiting slide and slidably connected to it. A rack is provided at the lower part of the other set of connecting sliders. The rack meshes with a gear, and the gear is fixedly connected to the transmission shaft II. Multiple sets of transmission shafts II are interconnected through synchronous pulleys and synchronous belts.

[0014] The device is powered by an external power source and controls the motor based on the existing PLC controller and the adapted control program and programming logic sequence. The motor drives the drive shaft I to rotate, which in turn drives the helical gear I to rotate. The helical gear I meshes with the helical gear II, which in turn drives the connecting rod to rotate. The connecting rod drives the sliding shaft to slide in the moving slide plate. The moving slide plate moves back and forth in a linear motion along the direction of the limiting slide plate. The moving slide plate drives the rack to move back and forth in a linear motion. The rack meshes with the gear, which drives the drive shaft II to rotate. The drive shaft II drives the guide plate to swing up and down. Multiple sets of drive shafts II are connected by synchronous pulleys and synchronous belts to ensure that multiple sets of guide plates swing up and down synchronously, ensuring that the gas entering the box is evenly dispersed on the activated carbon adsorption plate.

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] 1) By setting up multiple sets of activated carbon adsorption plates, VOCs waste gas is treated by adsorption at multiple levels. The activated carbon adsorption plates can be quickly replaced and maintained through the inspection port on the side. By setting multiple sets of filter plates in the filter plate support, the modular replacement design of the filter mechanism is realized, and the filter plates can be cleaned or replaced in batches, simplifying the maintenance process.

[0017] 2) By setting up a flow guiding mechanism, the exhaust gas or high-temperature steam entering the box can be evenly dispersed onto the activated carbon adsorption plate, which improves the contact efficiency between the exhaust gas and the adsorption material, avoids local overload or adsorption dead zone caused by uneven airflow distribution, and thus fully utilizes the overall adsorption capacity of activated carbon, and also ensures high efficiency when the adsorbent is reduced and desorbed by high-temperature steam.

[0018] 3) The desorbed gas enters the cooling recovery tank through the recovery pipe. The gas is cooled and liquefied in the cooling recovery tank to obtain liquid organic solvent, realizing the closed-loop utilization of resources. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the structure of a multi-stage adsorption treatment device for VOCs waste gas according to this utility model;

[0020] Appendix Figure 2 It is attached Figure 1 Schematic diagram of the adsorption treatment box structure Figure 1 ;

[0021] Appendix Figure 3 It is attached Figure 1 Schematic diagram of the adsorption treatment box structure Figure 2 ;

[0022] Appendix Figure 4 It is attached Figure 1 Schematic diagram of the adsorption treatment box structure Figure 3 ;

[0023] Appendix Figure 5 It is attached Figure 4 Schematic diagram of the flow guide mechanism Figure 1 ;

[0024] Appendix Figure 6 It is attached Figure 4 Schematic diagram of the flow guide mechanism Figure 2 ;

[0025] Appendix Figure 7 This is a schematic diagram of the operating state of a multi-stage adsorption treatment device for VOCs waste gas according to this utility model;

[0026] In the diagram: 11. Inlet pipe; 12. Adsorption treatment box; 13. Electric air valve; 14. Outlet pipe; 15. Exhaust fan; 16. Exhaust chimney; 17. High-temperature steam pipe; 18. Recovery pipe; 19. Cooling recovery box;

[0027] 101. Housing; 102. Intake fan; 103. Filter mechanism; 104. Steam branch pipe; 105. Flow guiding mechanism; 106. Activated carbon adsorption plate; 107. Inspection plate; 108. Transmission mechanism; 109. Protective cover;

[0028] 1031. Filter plate support; 1032. Filter plate;

[0029] 2101. Motor; 2102. Drive shaft I; 2103. Helical gear I;

[0030] 1051. Frame; 1052. Deflector; 1053. Swinging mechanism; 1504. Drive shaft II;

[0031] 3101, Support frame; 3102, Helical gear II; 3103, Connecting rod; 3104, Sliding shaft; 3105, Moving slide plate; 3106, Connecting slider; 3107, Rack; 3108, Gear; 3110, Limiting slide; 3112, Synchronous pulley; 3113, Synchronous belt. Detailed Implementation

[0032] To facilitate understanding by those skilled in the art, the following is in conjunction with the appendix. Figure 1-7 The technical solution of this utility model will be further described in detail below.

[0033] A multi-stage adsorption treatment device for VOCs waste gas includes an inlet pipe 11, an adsorption treatment box 12, an electric air valve 13, an outlet pipe 14, an induced draft fan 15, an exhaust chimney 16, a high-temperature steam pipe 17, a recovery pipe 18, and a cooling recovery box 19. The adsorption treatment box 12 has an inlet pipe 11 at its front end and an outlet pipe 14 at its rear end. An induced draft fan 15 is located at the rear end of the outlet pipe 14, and the outlet pipe 14 is connected to the exhaust chimney 16 via the induced draft fan 15. A high-temperature steam pipe 17 is located at the upper front end of the adsorption treatment box 12. The upper rear end of the 12 is equipped with a recovery pipe 18, which is connected to the cooling recovery box 19. All pipe connections are equipped with electric air valves 13. VOCs waste gas enters the adsorption treatment box 12 through the inlet pipe 11. The VOCs waste gas is filtered and adsorbed in the adsorption treatment box 12. The gas passes through the outlet pipe 14, which is equipped with a gas detector, model YF-1012, which is either custom-made or purchased. The gas is detected in real time to ensure that it meets the emission standards. The gas flow is ensured by the induced draft fan 15, and then discharged through the exhaust chimney 16.

[0034] When the adsorption treatment box 12 operates for a long time and the adsorbent is saturated, the gas cannot meet the emission standards as detected in real time. Therefore, the electric air valve 13 on the inlet pipe 11 and the outlet pipe 14 is closed. The electric air valve 13 is a rotary flame-retardant butterfly valve, model XC-ZHF, powered by an external power supply. The control of the electric air valve 13 is achieved based on the existing PLC controller and the adapted control program and programming logic sequence. High-temperature steam is introduced into the adsorption treatment box 12 through the high-temperature steam pipe 17. The high-temperature steam reduces and desorbs the adsorbent. The desorbed gas enters the cooling recovery box 19 through the recovery pipe 18. The gas is cooled and liquefied in the cooling recovery box 19 to obtain a liquid organic solvent. The solvent is then further purified by distillation to meet industrial use standards, realizing the closed-loop utilization of resources.

[0035] The adsorption treatment box 12 includes a box body 101, an air intake fan 102, a filter mechanism 103, a steam branch pipe 104, a flow guiding mechanism 105, an activated carbon adsorption plate 106, a maintenance plate 107, a transmission mechanism 108, and a protective cover 109. The air intake fan 102 is located at the front end inside the box body 101. The filter mechanism 103 is located behind the air intake fan 102. The steam branch pipe 104 is located at the rear end of the filter mechanism 103. The flow guiding mechanism 105 and the activated carbon adsorption plate 106 are located behind the steam branch pipe 104. Multiple sets of the flow guiding mechanism 105 and the activated carbon adsorption plate 106 are arranged inside the box body 101. The maintenance plate 107 is located on the side of the flow guiding mechanism 105 and the activated carbon adsorption plate 106. 7 is simultaneously installed on the side wall of the housing 101, and the transmission mechanism 108 is installed on the other side of the side wall of the housing 101. The transmission mechanism 108 is also connected to the flow guiding mechanism 105. A protective cover 109 is provided at the connection between the transmission mechanism 108 and the flow guiding mechanism 105. The intake fan 102 ensures the flow of exhaust gas. After the exhaust gas enters the housing 101, it is filtered by the filter mechanism 103. The flow guiding mechanism 105 evenly disperses the exhaust gas onto the activated carbon adsorption plate 106. Multiple sets of activated carbon adsorption plates 106 adsorb organic impurities in the exhaust gas. The transmission mechanism 108 provides power to the flow guiding mechanism 105. The protective cover 109 prevents the mechanism from being exposed and contaminated. The internal mechanism of the housing 101 is regularly inspected and replaced through the inspection plate 107.

[0036] The filtration mechanism 103 includes a filter plate support 1031 and a filter plate 1032. The filter plate support 1031 is slidably connected to the housing 101. The filter plate support 1031 has multiple sets of sliding grooves in the middle. The filter plate 1032 has multiple sets and is disposed in the sliding grooves in the filter plate support 1031 and is slidably connected to the filter plate support 1031. Multiple sets of filter plates 1032 can be simultaneously pulled out of the housing 101 through the filter plate support 1031, and the filter plates 1032 can be cleaned and replaced regularly to avoid clogging.

[0037] The transmission mechanism 108 includes a motor 2101, a transmission shaft I 2102, and a helical gear I 2103. The motor 2101 is installed on the side wall of the housing 101, and the output end of the motor 2101 is provided with a transmission shaft I 2102. Multiple sets of helical gears I 2103 are provided on the transmission shaft I 2102.

[0038] The flow guiding mechanism 105 includes a frame 1051, a flow guiding plate 1052, a swing mechanism 1053, and a drive shaft II 1504. The flow guiding plate 1052 is provided in multiple sets, and the drive shaft II 1504 is provided at the center of the flow guiding plate 1052. The drive shaft II 1504 passes through the frame 1051 and is rotatably connected to the frame 1051. One set of drive shaft II 1504 is connected to the swing mechanism 1053, which is located on one side of the frame 1051. The flow guiding plate 1052 swings up and down through the swing mechanism 1053, so as to uniformly guide the gas inside the box 101 to the activated carbon adsorption plate 106.

[0039] The swing mechanism 1053 includes a support frame 3101, a helical gear II 3102, a connecting rod 3103, a sliding shaft 3104, a movable slide plate 3105, a connecting slider 3106, a rack 3107, a gear 3108, a limiting slide groove 3110, a synchronous pulley 3112, and a synchronous belt 3113. The support frame 3101 is fixed on the housing 101. The helical gear II 3102 is mounted on the support frame 3101 and rotatably connected to it. The helical gear II 3102 simultaneously meshes with the helical gear I 2103 of the transmission mechanism 108. A connecting rod 3103 is provided at the lower end of the helical gear II 3102. The other end of the rod 3103 is provided with a sliding shaft 3104. The sliding shaft 3104 is set in the movable slide plate 3105 and is slidably connected to the movable slide plate 3105. The movable slide plate 3105 is provided with two sets of connecting sliders 3106. One set of connecting sliders 3106 is set in the limiting slide groove 3110 and is slidably connected to the limiting slide groove 3110. The lower part of the other set of connecting sliders 3106 is provided with a rack 3107. The rack 3107 meshes with a gear 3108. The gear 3108 is fixedly connected to the transmission shaft II 1504. Multiple sets of transmission shafts II 1504 are interconnected with each other through a synchronous pulley 3112 and a synchronous belt 3113.

[0040] The device is powered by an external power source and controls the motor 2101 based on a PLC controller and a compatible control program and programming logic sequence. The motor 2101 drives the transmission shaft I 2102 to rotate, which in turn drives the helical gear I 2103 to rotate. The helical gear I 2103 meshes with the helical gear II 3102, which in turn drives the connecting rod 3103 to rotate. The connecting rod 3103 then drives the sliding shaft 3104 to slide within the movable slide plate 3105. The movable slide plate 3105 moves along a limit position. The slide 3110 moves in a reciprocating linear motion. The moving slide plate 3105 drives the rack 3107 to move in a reciprocating linear motion. The rack 3107 meshes with the gear 3108. The gear 3108 drives the transmission shaft II 1504 to rotate. The transmission shaft II 1504 drives the guide plate 1052 to swing up and down. Multiple sets of transmission shafts II 1504 are connected by synchronous pulleys 3112 and synchronous belts 3113 to ensure that multiple sets of guide plates 1052 swing up and down synchronously, ensuring that the gas entering the box 101 is evenly dispersed on the activated carbon adsorption plate 106.

[0041] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, the connection methods are divided into fixed connection and movable connection. Fixed connection methods include, but are not limited to, welding and bolting; movable connection methods include, but are not limited to, sliding connection, rotating connection and threaded connection. The connection method to achieve the desired effect should be selected according to the application of the solution.

[0043] In summary, the power systems, including but not limited to motors, fans, and their respective transmission systems, are equipped with protective covers according to their actual installation locations, and sealing rings are provided at the relative rotational connections to prevent wear or damage to the power and transmission systems caused by the external environment, thereby ensuring the normal operation of the power and transmission systems.

[0044] In summary, the electronic or electrical components, including but not limited to motors, fans, gas detectors, electric valves, and PLC controllers, are existing components, obtained through customization or purchase. The electrical connections between these components are conventional circuit or electrical connections in the prior art and are not within the scope of protection of this invention. Furthermore, according to the design requirements of this design scheme, appropriate power supply methods should be selected for the electrical components based on the application scenario. Power supply methods include, but are not limited to, external power supply. The coordinated operation between the various components is achieved based on the existing PLC controller and the adapted control program and programming logic sequence. The aforementioned control program is not within the scope of protection of this utility model.

[0045] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A multi-stage adsorption treatment device for VOCs waste gas, comprising an inlet pipe, an adsorption treatment box, an electric air valve, an outlet pipe, an induced draft fan, an exhaust chimney, a high-temperature steam pipe, a recovery pipe, and a cooling recovery box; characterized in that... The adsorption treatment box is equipped with an air inlet pipe at the front end and an air outlet pipe at the rear end. A gas detector is installed in the air outlet pipe, and an exhaust fan is installed at the rear end of the air outlet pipe. The air outlet pipe is connected to an exhaust chimney through the exhaust fan. A high-temperature steam pipe is installed at the front end of the upper part of the adsorption treatment box, and a recovery pipe is installed at the rear end of the upper part of the adsorption treatment box. The recovery pipe is connected to a cooling recovery box. All pipe connections are equipped with electric air valves. The adsorption treatment box includes a box body, an air intake fan, a filter mechanism, a flow guiding mechanism, an activated carbon adsorption plate, and a transmission mechanism. The air intake fan is located at the front end of the box body, and the filter mechanism is located behind the air intake fan. A steam branch pipe is located at the rear end of the filter mechanism, and the flow guiding mechanism and activated carbon adsorption plate are located behind the steam branch pipe. Multiple sets of flow guiding mechanisms and activated carbon adsorption plates are provided and located inside the box body. A maintenance plate is provided on the side of the flow guiding mechanism and activated carbon adsorption plate, and the maintenance plate is also located on the side wall of the box body. The transmission mechanism is located on the other side of the side wall of the box body and is connected to the flow guiding mechanism. A protective cover is provided at the connection between the transmission mechanism and the flow guiding mechanism.

2. The VOCs waste gas multi-stage adsorption treatment device according to claim 1, characterized in that... The flow guiding mechanism includes a frame, a flow guiding plate, a swing mechanism, and a drive shaft II. The flow guiding plate is provided in multiple sets, and the drive shaft II is provided at the center of the flow guiding plate. The drive shaft II passes through the frame and is rotatably connected to the frame. One set of drive shaft II is connected to the swing mechanism, which is located on one side of the frame.

3. The VOCs waste gas multi-stage adsorption treatment device according to claim 2, characterized in that... The swing mechanism includes a support frame, helical gear II, connecting rod, sliding shaft, movable slide plate, connecting slider, rack, gear, limiting slide, synchronous pulley, and synchronous belt. The support frame is fixed on the housing. Helical gear II is mounted on the support frame and rotatably connected to it. Helical gear II also meshes with helical gear I of the transmission mechanism. A connecting rod is provided at the lower end of helical gear II, and a sliding shaft is provided at the other end of the connecting rod. The sliding shaft is located in the movable slide plate and slidably connected to it. Two sets of connecting sliders are provided under the movable slide plate. One set of connecting sliders is located in the limiting slide and slidably connected to it. A rack is provided at the lower part of the other set of connecting sliders. The rack meshes with a gear, and the gear is fixedly connected to the transmission shaft II. Multiple sets of transmission shafts II are interconnected through synchronous pulleys and synchronous belts.

4. The VOCs waste gas multi-stage adsorption treatment device according to claim 1, characterized in that... The filtration mechanism includes a filter plate support and a filter plate; the filter plate support is slidably connected to the housing, and the filter plate support has multiple sets of sliding grooves in the middle, and the filter plate has multiple sets of sliding grooves in the filter plate support and is slidably connected to the filter plate support.

5. A multi-stage adsorption treatment device for VOCs waste gas according to claim 1, characterized in that... The transmission mechanism includes a motor, a transmission shaft I, and a helical gear I; the motor is mounted on the side wall of the housing, and the output end of the motor is provided with a transmission shaft I, which is equipped with multiple sets of helical gears I.

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