A VOCs recovery treatment device and operating method

Abstract

The application discloses a VOCs recovery treatment device and an operation method thereof. The device comprises a tank body and a filter cartridge connected to the tank body. A cross-shaped partition plate is installed in the filter cartridge. The cross-shaped partition plate is used for dividing an adsorption cavity arranged in the filter cartridge. The cross-shaped partition plate is connected with a plugging mechanism used for plugging the corresponding adsorption cavity. The plugging mechanism comprises a second motor, a rotating shaft, a guide plate, a second spring, a spring seat and a baffle. The uniform disc is connected with a pressing mechanism used for pressing the baffle. The adsorption cavity is connected with a tumbling mechanism used for tumbling the adsorbent up and down. The uniform disc is connected with a lifting mechanism used for driving the uniform disc to lift. The application can realize seamless alternating use of multiple adsorption cavities, can normally filter waste gas in a non-stop state, improves operation efficiency, realizes tumbling of the adsorbent in the adsorption cavity up and down, changes the adsorbent located at the upper part into the lower part, facilitates secondary use next time, and avoids resource waste.

Description

Technical Field

[0001] This invention relates to the field of VOCs recovery and treatment technology, specifically to a VOCs recovery and treatment device and its operating method. Background Technology

[0002] VOCs, or volatile organic compounds, are a common type of air pollutant. VOCs are diverse and widely distributed, mainly originating from crude oil, chemical plants, organic chemical and solvent production and processing, and industrial paint production and use. They pose a serious threat to the surrounding environment and human health. Important VOCs include toluene, xylene, formic acid, dimethylaniline, formaldehyde, n-hexane, butyl acetate, and alcohol. With the continuous improvement of industrialization, the proportion of air pollutants generated by enterprises is constantly increasing. Since ambient air is an indispensable part of our natural environment, the treatment of waste gas is a crucial step in preventing air pollution and protecting public health; this is precisely the value and significance of waste gas treatment.

[0003] Existing treatment methods often employ adsorption, which uses adsorbents to absorb harmful substances in waste gas. However, after prolonged use, the adsorption capacity of the adsorbent decreases, resulting in poor absorption. Therefore, it is necessary to shut down the machine for replacement, which is quite troublesome. Furthermore, the downtime prevents the waste gas from being treated, thus affecting operational efficiency and incurring significant economic costs. Summary of the Invention

[0004] The purpose of this invention is to provide a VOCs recovery and treatment device and operating method, which has the advantages of enabling seamless alternation of multiple adsorption chambers, normal filtration of waste gas without stopping the machine, improving operating efficiency, and realizing the up-and-down tumbling of adsorbent in the adsorption chamber, so that the adsorbent at the top is transferred to the bottom, which is convenient for secondary use and avoids resource waste. This invention solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a VOCs recovery and treatment device, comprising a tank and a filter cartridge connected to the tank, wherein a cross-shaped baffle is installed inside the filter cartridge, the cross-shaped baffle is used to divide the adsorption chambers disposed inside the filter cartridge, and the cross-shaped baffle is connected to a sealing mechanism for sealing the corresponding adsorption chambers, the sealing mechanism comprising a second motor, a rotating shaft, a guide plate, a second spring, a spring seat, and a baffle, the second motor is used to drive the rotating shaft to rotate, the guide plate is connected to the outside of the rotating shaft and is used to guide the baffle, the second spring is used to drive the baffle to move towards the spring seat, a uniform disk for gas guidance is connected inside the tank, the uniform disk is connected to a pressing mechanism for pressing the baffle, a tumbling mechanism for the adsorbent to tumble up and down is connected inside the adsorption chamber, and a lifting mechanism for driving the uniform disk to rise and fall;

[0006] When operating normally, the clamping mechanism presses against the corresponding baffle, and the clamping mechanism is used to activate the corresponding tumbling mechanism.

[0007] Preferably, the top and bottom ends of the filter cylinder are respectively connected to an upper perforated plate and a lower perforated plate, and the outer side of the filter cylinder is connected to four feed pipes and four discharge pipes.

[0008] Preferably, the second motor is connected to the top of the tank, and the power output end of the second motor is connected to the rotating shaft, which passes through the center of the cross-shaped partition and is rotatably connected.

[0009] Preferably, the spring seat is fixed to the bottom of the rotating shaft, the second spring is sleeved on the rotating shaft, and both ends of the second spring are connected to the baffle and the spring seat.

[0010] Preferably, there are two guide plates, which are distributed opposite to each other, and the guide plates are slidably connected to the baffles.

[0011] Preferably, the clamping mechanism includes four support cylinders, four support columns, four guide grooves, four positioning grooves, four springs, and four motors. The support cylinders are rotatably connected to the uniformizing disk. The motors are fixed to the bottom of the uniformizing disk, and the power output end of the motors is connected to the support cylinders. The support columns are slidably connected to the support cylinders. The springs are used to drive the support columns to move away from the uniformizing disk. The guide grooves are connected to the positioning grooves, and both the guide grooves and the positioning grooves are located on the top of the support columns.

[0012] Preferably, the spring is located inside the support cylinder, and both ends of the spring are connected to the support column and the support cylinder.

[0013] Preferably, the tumbling mechanism includes a spiral shaft and a connector. The two ends of the spiral shaft are rotatably connected to the upper perforated plate and the lower perforated plate. The connector is connected to the end of the spiral shaft and matches the positioning groove.

[0014] Preferably, the lifting mechanism includes a motor, a support plate, a stud, two moving blocks, and two top plates. The motor is connected to the outside of the tank, and the power output end of the motor is connected to the stud. The stud is threadedly connected to the two moving blocks, and the two moving blocks are slidably connected to the top of the support plate. The support plate is fixed inside the tank, and both ends of the top plate are connected to the corresponding moving blocks and the equalizing disc.

[0015] An operating method for a VOCs recovery and treatment device includes the following steps:

[0016] Step 1: The exhaust gas moves from bottom to top along the height of the tank. The uniform disk disperses the exhaust gas and acts as a guide. Then it enters the opened adsorption chamber. The adsorbent in the adsorption chamber adsorbs and purifies the exhaust gas. The clean gas is discharged from the top of the tank.

[0017] Step 2: Motor 1 drives the uniform disk to move further upward, which in turn moves the support cylinder, support column, and motor 3 upward. The three support columns are further pressed against the baffle to achieve the baffle being pressed and fixed. Meanwhile, another support column is connected to the connector located in the saturated adsorption chamber. The corresponding motor 3 drives the corresponding support cylinder and support column to rotate synchronously, which in turn drives the spiral shaft to rotate, so that the adsorbent in the adsorption chamber is tumbled up and down, and the adsorbent located at the top is transferred to the bottom for easy reuse next time.

[0018] Step 3: Then, motor 1 drives the stud to rotate, causing the two moving blocks to move away from each other. With the use of the two top plates, the uniform plate can move down, synchronously driving the support cylinder, support column, and motor 3 to move down. That is, the support column separates from the baffle. The stretched spring 2 drives the baffle to return to its original position, that is, the baffle moves down, separating the baffle from the filter cylinder. Motor 2 drives the rotating shaft to rotate, causing the baffle to rotate 90°. A new adsorption chamber is opened, while the saturated adsorption chamber (which has been tumbled) is closed.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention is equipped with a sealing mechanism, a pressing mechanism, and a tumbling mechanism. The sealing mechanism includes a second motor, a rotating shaft, a guide plate, a second spring, a spring seat, and a baffle. The pressing mechanism includes four support cylinders, four support columns, four guide grooves, four positioning grooves, four first springs, and four third motors. The tumbling mechanism includes a spiral shaft and a connector. When the adsorbent in a certain adsorption chamber is saturated, the first motor drives the uniform disk to move upward, which in turn moves the support cylinders, support columns, and third motors upward. The three support columns further press against the baffle, thereby pressing and fixing the baffle. The other support column is connected to the connector located in the (saturated) adsorption chamber. The corresponding third motor drives the corresponding support cylinder and support column to rotate synchronously, which in turn drives the spiral shaft to rotate, thereby tumbling the adsorbent in the adsorption chamber. The adsorbent located at the top is transferred to the bottom, which is convenient for secondary use and avoids resource waste. Then, motor one drives the stud to rotate, causing the two moving blocks to move away from each other. With the use of the two top plates, the uniform plate can move downward, synchronously driving the support cylinder, support column, and motor three to move downward. That is, the support column separates from the baffle. The stretched spring two drives the baffle to return to its original position, that is, the baffle moves downward, separating the baffle from the filter cylinder. Motor two drives the rotating shaft to rotate, causing the baffle to rotate 90°. A new adsorption chamber is opened, while the (saturated) adsorption chamber is closed (this adsorption chamber has been tumbled up and down). This allows multiple adsorption chambers to be used seamlessly and alternately, enabling normal filtration of exhaust gas without stopping the machine, thus improving operating efficiency. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal bottom structure of the tank body of the present invention;

[0022] Figure 3 for Figure 2 A partial view;

[0023] Figure 4 This is a schematic diagram of the internal structure of the tank of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal top structure of the tank body of the present invention;

[0025] Figure 6 This is a schematic diagram of the connection structure between the support cylinder and the support column of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure between the baffle and the filter cylinder of the present invention;

[0027] Figure 8 for Figure 7 Enlarged view of point B;

[0028] Figure 9 for Figure 7 Enlarged view of point A;

[0029] Figure 10 This is a schematic diagram of the principle of the present invention.

[0030] In the diagram: 1. Tank body; 2. Inlet pipe; 3. Exhaust pipe; 4. Motor 1; 5. Motor 2; 6. Feed pipe; 7. Discharge pipe; 8. Support cylinder; 9. Equalizing disc; 10. Support column; 11. Motor 3; 12. Top plate; 13. Moving block; 14. Support plate; 15. Stud; 16. Baffle; 17. Lower perforated plate; 18. Spiral shaft; 19. Adsorption chamber; 20. Filter cylinder; 21. Cross-shaped baffle; 22. Upper perforated plate; 23. Rotating shaft; 24. Guide groove; 25. Positioning groove; 26. Spring 1; 27. Guide plate; 28. Spring 2; 29. ​​Spring seat; 30. Connector. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 10 This invention provides a VOCs recovery and treatment device, including a tank 1 and a filter cartridge 20 connected inside the tank 1. A cross-shaped baffle 21 is installed inside the filter cartridge 20, which is used to divide the adsorption chambers 19 disposed inside the filter cartridge 20. The four adsorption chambers 19 can be filled with different adsorbents and are isolated from each other by the cross-shaped baffle 21. The cross-shaped baffle 21 is connected to a sealing mechanism for sealing the corresponding adsorption chambers 19. The sealing mechanism includes a second motor 5, a rotating shaft 23, a guide plate 27, a second spring 28, a spring seat 29, and a baffle 16. The second motor 5 is used to drive the rotating shaft 23 to rotate. The guide plate 27 is connected to the outside of the rotating shaft 23 and is used to guide the baffle 16. The second spring 28 is used to drive the baffle 16 to move towards the spring seat 29. The baffle 16 has a disc-shaped structure and is provided with a quarter notch. Gas passes through the notch and is transported to the corresponding adsorption chamber 19, then is adsorbed and purified by the adsorbent, and finally discharged from the exhaust pipe 3. The tank body 1 is connected to a uniform disk 9 for gas guidance. The uniform disk 9 is connected to a pressing mechanism for pressing the baffle 16. The adsorption chamber 19 is connected to a tumbling mechanism for the adsorbent to tumble up and down. The uniform disk 9 is connected to a lifting mechanism for driving the uniform disk 9 to rise and fall.

[0033] When the adsorbent in a certain adsorption chamber 19 is saturated (before the baffle 16 rotates), motor 4 drives the uniform disk 9 to move upward, which in turn drives the support cylinder 8, support column 10, and motor 11 to move upward. The three support columns 10 further press against the baffle 16, thus fixing the baffle 16 in place. Meanwhile, another support column 10 is connected to the connector 30 located in the (saturated) adsorption chamber 19. The corresponding motor 11 drives the corresponding support cylinder 8 and support column 10 to rotate synchronously, which in turn drives the spiral shaft 18 to rotate, thus tumbling the adsorbent in the adsorption chamber 19 up and down. The adsorbent located at the top is transferred to the bottom, making it easier to reuse next time (the four adsorption chambers 19 can be used 8 times, achieving full utilization) and avoiding resource waste. Then, motor 4 drives stud 15 to rotate, causing the two moving blocks 13 to move away from each other. With the use of the two top plates 12, the uniform disk 9 can move down, synchronously driving the support cylinder 8, support column 10, and motor 11 to move down. That is, the support column 10 separates from the baffle 16. The stretched spring 28 drives the baffle 16 to return to its original position, that is, the baffle 16 moves down, separating the baffle 16 from the filter cylinder 20. Motor 5 drives the rotating shaft 23 to rotate, causing the baffle 16 to rotate 90°. The new adsorption chamber 19 is opened, while the (saturated) adsorption chamber 19 is closed (this adsorption chamber has been tumbled up and down). This allows multiple adsorption chambers 19 to be used seamlessly and alternately, enabling normal filtration of exhaust gas without stopping the machine, thus improving operating efficiency.

[0034] Two tanks 1 can be set up, and the two tanks 1 are used alternately. At the same time, the air inlet end of the tank 1 is connected to the inlet fan c1, and the inlet pressure transmitter P1 is connected to the pipeline connected to the inlet fan c1. The tank 1 is connected to the oxidation system Y1, and the oxidation system Y1 is connected to the nitrogen heat exchanger E1. The two tanks 1 are connected to the refrigeration heat exchanger E2, the self-refrigeration unit Z1, the return collection tank R3, and the recovery liquid transfer pump C2.

[0035] 1) The inlet pressure transmitter P1 detects whether the pressure of the VOCs gas phase pipeline has reached the design value. If it reaches the start-up set value, the inlet fan C1 is started to introduce VOCs into the treatment system.

[0036] 2) VOCs first pass through the adsorption system, that is, VOCs are adsorbed and concentrated by a combination of adsorbents in tank 1; after the adsorbent in tank 1 is saturated, it automatically switches to another tank 1 to continue adsorbing and concentrating VOCs (based on time settings or automatic control based on changes in outlet concentration).

[0037] 3) After adsorption and concentration, VOCs re-enter the oxidation system Y1. The oxidation system Y1 selects CO, TO or RTO for oxidation and emission control according to the differences in the components being treated, so that the concentration of non-methane total hydrocarbons of the emitted VOCs meets or is even far below the national and local emission standards.

[0038] 4) The saturated adsorbent is desorbed and regenerated by inert gas heating (generally nitrogen). Before entering the two tanks 1, the nitrogen gas exchanges heat with the heat generated by the oxidation system Y1. The nitrogen gas is heated to 90°C in the nitrogen heat exchanger E1 (set according to the composition properties). The high temperature nitrogen gas raises the temperature of the adsorbent and at the same time desorbs the VOCs components in the adsorbent.

[0039] 5) The VOCs concentrations extracted are high and directly enter the refrigeration heat exchanger E2 of the condensation recovery system for liquefaction and recovery. The cold source for the refrigeration heat exchanger E2 comes from the refrigeration unit Z1 (the condensation temperature is selected as 0℃, -20℃ or -70℃ according to the VOCs components being treated).

[0040] 6) The condensed and recovered liquid is stored in the recovery and storage system. The recovery collection tank R3 is equipped with a level transmitter L1. The automatic control system automatically transports the recovered liquid to the user-designated pipeline through the recovery liquid transfer pump C2 according to the set parameters of the level transmitter L1.

[0041] The top and bottom ends of the filter cartridge 20 are connected to an upper porous plate 22 and a lower porous plate 17, respectively. Four feed pipes 6 and four discharge pipes 7 are connected to the outside of the filter cartridge 20. The lower porous plate 17 is used to support the adsorbent.

[0042] Motor 25 is connected to the top of tank 1, and the power output end of motor 25 is connected to rotating shaft 23. Rotating shaft 23 passes through the center of cross-shaped partition 21 and is rotatably connected, which can improve the stability of rotating shaft 23 and thus improve the stability of baffle 16 rotation.

[0043] Spring seat 29 is fixed to the bottom of rotating shaft 23, and spring 28 is sleeved on rotating shaft 23, with both ends of spring 28 connected to baffle 16 and spring seat 29.

[0044] Two guide plates 27 are provided and are distributed opposite to each other. The guide plates 27 are slidably connected to the baffle 16. The guide plates 27 play a good guiding role for the baffle 16, that is, the baffle 16 can only move up and down along the height direction of the rotation axis 23 and cannot rotate. In other words, the rotation of the rotation axis 23 can synchronously drive the baffle 16 to rotate, and there is no misalignment.

[0045] The clamping mechanism includes four support cylinders 8, four support columns 10, four guide grooves 24, four positioning grooves 25, four springs 26, and four motors 11. The support cylinders 8 are rotatably connected to the uniform disk 9. The motors 11 are fixed to the bottom of the uniform disk 9, and the power output end of the motors 11 is connected to the support cylinders 8. The support columns 10 are slidably connected to the support cylinders 8. The springs 26 are used to drive the support columns 10 to move away from the uniform disk 9. The guide grooves 24 are connected to the positioning grooves 25, and both the guide grooves 24 and the positioning grooves 25 are located on the top of the support columns 10. During normal use, the three support columns 10 are pressed against the baffle 16, which can improve the stability of the baffle 16. The other support column 10 corresponds to the notch, but is not connected to the connector 30. When the adsorbent in the corresponding adsorption chamber 19 is saturated, the four uniform disks 9 move further upward, driving the four support cylinders 8 to move further upward. The positions of the three support columns 10 remain unchanged, but the spring 26 is further compressed, increasing the pressure on the baffle 16 and improving the stability of the baffle 16. The other support column 10 moves upward normally and connects with the connector 30. The corresponding motor 11 drives the rotation of the support column 10 and the support cylinder 8, which in turn drives the rotation of the connector 30 and the spiral shaft 18, realizing the up-and-down tumbling of the saturated adsorbent.

[0046] Spring 26 is located inside support cylinder 8, and both ends of spring 26 are connected to support column 10 and support cylinder 8.

[0047] The tumbling mechanism includes a spiral shaft 18 and a connector 30. The two ends of the spiral shaft 18 are rotatably connected to the upper perforated plate 22 and the lower perforated plate 17. The connector 30 is connected to the end of the spiral shaft 18 and matches the positioning groove 25, which can improve the rotational stability of the spiral shaft 18.

[0048] The lifting mechanism includes a motor 4, a support plate 14, a stud 15, two moving blocks 13, and two top plates 12. The motor 4 is connected to the outside of the tank 1, and the power output end of the motor 4 is connected to the stud 15. The stud 15 is threadedly connected to the two moving blocks 13. The two moving blocks 13 are slidably connected to the top of the support plate 14. The support plate 14 is fixed inside the tank 1. The two ends of the top plate 12 are connected to the corresponding moving blocks 13 and the equalization disc 9.

[0049] An operating method for a VOCs recovery and treatment device includes the following steps:

[0050] Step 1: The exhaust gas moves from bottom to top along the height of the tank 1. The uniform disk 9 disperses the exhaust gas and acts as a guide. Then it enters the opened adsorption chamber 19. The adsorbent in the adsorption chamber 19 adsorbs and purifies the exhaust gas. The clean gas is discharged from the top of the tank 1.

[0051] Step 2: Motor 1 4 drives the uniform disk 9 to move further upward, which in turn drives the support cylinder 8, support column 10, and motor 3 11 to move upward. The three support columns 10 are further pressed against the baffle 16 to achieve the pressing and fixing of the baffle 16. Meanwhile, another support column 10 is connected to the connector 30 located in the saturated adsorption chamber 19. The corresponding motor 3 11 drives the corresponding support cylinder 8 and support column 10 to rotate synchronously, which in turn drives the spiral shaft 18 to rotate, so that the adsorbent in the adsorption chamber 19 is tumbled up and down, and the adsorbent located at the top is changed to the bottom, which is convenient for secondary use.

[0052] Step 3: Then, motor 4 drives the stud 15 to rotate, causing the two moving blocks 13 to move away from each other. With the use of the two top plates 12, the uniform disk 9 can be moved down, which simultaneously drives the support cylinder 8, support column 10, and motor 11 to move down. That is, the support column 10 separates from the baffle 16. The stretched spring 28 drives the baffle 16 to return to its original position, that is, the baffle 16 moves down, separating the baffle 16 from the filter cylinder 20. Motor 5 drives the rotating shaft 23 to rotate, causing the baffle 16 to rotate 90°. The new adsorption chamber 19 is opened, while the saturated adsorption chamber 19 (which has been tumbled) is closed.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A VOCs recovery and treatment device, characterized in that, The device includes a tank (1) and a filter cartridge (20) connected inside the tank (1). A cross-shaped baffle (21) is installed inside the filter cartridge (20). The cross-shaped baffle (21) is used to divide the adsorption chambers (19) set inside the filter cartridge (20). The cross-shaped baffle (21) is connected to a sealing mechanism for sealing the corresponding adsorption chambers (19). The sealing mechanism includes a second motor (5), a rotating shaft (23), a guide plate (27), a second spring (28), a spring seat (29), and a baffle (16). The second motor (5) is used to drive the rotating shaft (23). Rotation, the guide plate (27) is connected to the outside of the rotating shaft (23), and the guide plate (27) is used to guide the baffle (16). The second spring (28) is used to drive the baffle (16) to move closer to the spring seat (29). The tank (1) is connected to a uniform disk (9) for gas guidance. The uniform disk (9) is connected to a pressing mechanism for pressing the baffle (16). The adsorption chamber (19) is connected to a tumbling mechanism for the adsorbent to tumble up and down. The uniform disk (9) is connected to a lifting mechanism for driving the uniform disk (9) to rise and fall. When working normally, the clamping mechanism presses against the corresponding baffle (16), and the clamping mechanism is used to open the corresponding tumbling mechanism; The top and bottom ends of the filter cylinder (20) are respectively connected to an upper perforated plate (22) and a lower perforated plate (17), and four feed pipes (6) and four discharge pipes (7) are connected to the outside of the filter cylinder (20). The clamping mechanism includes four support cylinders (8), four support columns (10), four guide grooves (24), four positioning grooves (25), four springs (26), and four motors (11). The support cylinders (8) are rotatably connected to the uniform disk (9). The motors (11) are fixed to the bottom of the uniform disk (9), and the power output end of the motors (11) is connected to the support cylinders (8). The support columns (10) are slidably connected to the support cylinders (8). The springs (26) are used to drive the support columns (10) to move away from the uniform disk (9). The guide grooves (24) are connected to the positioning grooves (25), and the guide grooves (24) and positioning grooves (25) are both located on the top of the support columns (10). The spring 1 (26) is located inside the support cylinder (8), and both ends of the spring 1 (26) are connected to the support column (10) and the support cylinder (8); The tumbling mechanism includes a spiral shaft (18) and a connector (30). The two ends of the spiral shaft (18) are rotatably connected to the upper perforated plate (22) and the lower perforated plate (17). The connector (30) is connected to the end of the spiral shaft (18) and matches the positioning groove (25).

2. The VOCs recovery and treatment device according to claim 1, characterized in that, The second motor (5) is connected to the top of the tank (1), and the power output end of the second motor (5) is connected to the rotating shaft (23). The rotating shaft (23) passes through the center of the cross-shaped partition (21) and is rotatably connected.

3. The VOCs recovery and treatment device according to claim 1, characterized in that, The spring seat (29) is fixed to the bottom of the rotating shaft (23), and the second spring (28) is sleeved on the rotating shaft (23), with both ends of the second spring (28) connected to the baffle (16) and the spring seat (29).

4. The VOCs recovery and treatment device according to claim 1, characterized in that, Two guide plates (27) are provided and are distributed relative to each other. The guide plates (27) are slidably connected to the baffle (16).

5. The VOCs recovery and treatment device according to claim 1, characterized in that, The lifting mechanism includes a motor (4), a support plate (14), a stud (15), two moving blocks (13), and two top plates (12). The motor (4) is connected to the outside of the tank (1), and the power output end of the motor (4) is connected to the stud (15). The stud (15) is threadedly connected to the two moving blocks (13). The two moving blocks (13) are slidably connected to the top of the support plate (14). The support plate (14) is fixed inside the tank (1). The two ends of the top plate (12) are connected to the corresponding moving blocks (13) and the equalization disc (9).

6. The operation method of the VOCs recovery and treatment device according to claim 5, characterized in that, Includes the following steps: Step 1: The exhaust gas moves from bottom to top in the height direction of the tank (1). The uniform disk (9) disperses the exhaust gas and plays a guiding role. Then it enters the opened adsorption chamber (19). The adsorbent in the adsorption chamber (19) adsorbs and purifies the exhaust gas. The clean gas is discharged from the top of the tank (1). Step 2: Motor 1 (4) drives the uniform disk (9) to move further upward, which in turn drives the support cylinder (8), support column (10), and motor 3 (11) to move upward. The three support columns (10) are further pressed against the baffle (16) to achieve the pressing and fixing of the baffle (16). Another support column (10) is connected to the connector (30) located in the saturated adsorption chamber (19). The corresponding motor 3 (11) drives the corresponding support cylinder (8) and support column (10) to rotate synchronously, which in turn drives the spiral shaft (18) to rotate, so that the adsorbent in the adsorption chamber (19) can be tumbled up and down. The adsorbent located at the top is transformed into the one at the bottom, which is convenient for secondary use next time. Step 3: Then, motor 1 (4) drives the stud (15) to rotate, causing the two moving blocks (13) to move away from each other. With the use of the two top plates (12), the uniform disk (9) moves down, which in turn drives the support cylinder (8), support column (10), and motor 3 (11) to move down. That is, the support column (10) separates from the baffle (16). The stretched spring 2 (28) drives the baffle (16) to return to its original position, that is, the baffle (16) moves down, causing the baffle (16) to separate from the filter cylinder (20). Motor 2 (5) drives the rotating shaft (23) to rotate, causing the baffle (16) to rotate 90°. The new adsorption chamber (19) is opened, while the saturated adsorption chamber (19) has been closed after being tumbled.

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