VOCs waste gas treatment device for chemical production

Abstract

The application discloses a VOCs waste gas treatment device for chemical production and relates to the technical field of environmental protection engineering. The device comprises a shell, two first partitions and two second partitions, which are all fixedly connected in the shell, two mounting plates, which are all detachably connected to the shell, mounting shells fixedly connected to the mounting plates, rectangular arrayed storage shells arranged in the mounting shells, activated carbon filled in the storage shells, rectangular arrayed elastic telescopic rods fixedly connected to the storage shells and telescopic ends of the elastic telescopic rods penetrating through the storage shells. The device can ensure that the high-pollution activated carbon is timely replaced, avoid the decrease of the overall adsorption efficiency caused by local saturation, reduce the replacement frequency, ensure the adsorption effect of the activated carbon and improve the utilization rate of the activated carbon.

Description

Technical Field

[0001] This invention relates to the field of environmental engineering technology, and in particular to a VOCs waste gas treatment device for chemical production. Background Technology

[0002] Volatile organic compounds (VOCs), as the main gaseous pollutants generated in chemical production processes, are characterized by high volatility and high permeability. These compounds can irritate the human respiratory system and mucous membranes. At the same time, VOCs react with nitrogen oxides, sulfur dioxide, and other substances in the atmosphere in a photochemical reaction to generate secondary aerosols and photochemical smog, which are one of the main causes of complex air pollution such as urban haze. Against this background, activated carbon adsorption technology has become one of the most widely used core technologies in VOCs waste gas treatment due to its advantages such as large adsorption capacity, relatively low cost, and simple operation. Currently, when using activated carbon adsorption technology to treat VOCs waste gas, activated carbon adsorption boxes are usually used as terminal treatment equipment. When the waste gas passes through an adsorption bed filled with granular activated carbon or activated carbon fiber, the VOCs components are selectively intercepted, thus achieving waste gas purification.

[0003] In existing activated carbon adsorption boxes, VOCs waste gas typically passes through the activated carbon bed in a unidirectional manner during operation. Because the waste gas always passes through the adsorption box in one direction, the surface activated carbon directly contacts high-concentration pollutants, causing its microporous structure to quickly become saturated or even clogged. Meanwhile, the deeper activated carbon, due to its lighter pollution level, retains some adsorption capacity. Under current technological conditions, companies typically replace the entire activated carbon layer at fixed intervals to ensure the activated carbon adsorption box can properly treat VOCs waste gas during use. However, this complete replacement method forces the deeper activated carbon to be discarded even when it is still usable, resulting in waste of activated carbon and increased disposal costs. Summary of the Invention

[0004] In order to overcome the shortcomings of existing activated carbon adsorption boxes during normal use, the present invention provides a VOCs waste gas treatment device for chemical production.

[0005] The technical implementation scheme of the present invention is: a VOCs waste gas treatment device for chemical production, comprising:

[0006] shell;

[0007] There are two of each of the first and second partitions, and both are fixedly connected to the outer shell;

[0008] The mounting plate has two parts, both of which are detachably connected to the outer shell. The mounting plate is fixedly connected to the mounting shell, which is located between the corresponding first partition and the second partition. The mounting shell contains a rectangular array of storage shells filled with activated carbon. The storage shell is fixedly connected to a rectangular array of elastic telescopic rods, the telescopic ends of which pass through the storage shells. The mounting shell contains symmetrically distributed limiting grooves and symmetrically distributed rotating disks. The rotating disks are provided with positioning grooves. The telescopic ends of the elastic telescopic rods slide within the corresponding limiting grooves and the corresponding positioning grooves.

[0009] A guide plate is fixed inside the outer casing and is fixed to the first partition plate on the upper side and the second partition plate on the lower side. The two mounting shells are respectively located on both sides of the guide plate.

[0010] A drive assembly, disposed within the housing, is used to change the position of all the storage housings.

[0011] Furthermore, the guide plate has symmetrically distributed inclined surfaces on the side away from the second partition plate to guide airflow.

[0012] Furthermore, both the limiting groove and the positioning groove are composed of two horizontal parts and two vertical parts, and the horizontal parts on both are connected to the vertical parts. The horizontal part of the limiting groove is connected to the horizontal part of the adjacent positioning groove.

[0013] Furthermore, the driving component includes:

[0014] The first electric push rod has two parts, both of which are fixed to the housing;

[0015] There are two connecting rods, which are respectively fixed to the telescopic ends of the first electric push rod;

[0016] Two rotating plates are respectively rotatably connected to the corresponding connecting rods, and the rotating plates are used to push the corresponding storage shells.

[0017] There are two second electric push rods, both of which are fixed to the outer shell. The telescopic end of the second electric push rod passes through the second partition and is slidably connected to it. The mounting shell is provided with a through hole for sliding the telescopic end of the corresponding second electric push rod. The second electric push rod is used to push the corresponding storage shell.

[0018] Furthermore, the two first electric actuators and the two second electric actuators are staggered.

[0019] Furthermore, the driving component also includes:

[0020] Two fixing plates are provided, each fixed to a corresponding mounting shell. The fixing plate is provided with a groove and fits against the adjacent first partition plate.

[0021] Two electric rotating shafts are rotatably connected to the corresponding grooves of the fixed plate, and the electric rotating shafts are provided with external threads.

[0022] The movable block has two parts, each threadedly connected to the corresponding electric rotating shaft, and the movable block slides within the groove of the corresponding fixed plate;

[0023] There are two connecting blocks, which are respectively rotatably connected to the corresponding moving blocks. The connecting blocks are located on the side of the adjacent moving blocks that is close to the adjacent storage shell. A torsion spring is fixed between the connecting blocks and the moving blocks. The storage shell is provided with a through hole for the connecting blocks to slide.

[0024] Furthermore, it also includes:

[0025] The rotating shell has two parts, which are rotatably connected to the corresponding mounting shells. The rotating shells are in communication with the mounting shells. The two sides of the rotating shells are respectively fixed to the corresponding rotating disks. The rotating disks are rotatably connected to the corresponding mounting shells.

[0026] Two self-locking motors are symmetrically distributed and fixed to corresponding mounting plates. The output shaft of the self-locking motor passes through the adjacent mounting plate and the adjacent mounting shell and is fixed to the adjacent rotating disk. A sensor for detecting exhaust gas concentration is provided inside the shell.

[0027] Furthermore, the mounting shell has an arc-shaped portion on the side away from the corresponding first electric push rod, and the rotating shell has symmetrically distributed arc-shaped surfaces. The arc-shaped portion and the arc-shaped surface on the rotating shell have the same radius and are concentric.

[0028] Furthermore, a through hole is provided on the lower side of the arc-shaped part, and the angle of the central angle corresponding to the through hole on the arc-shaped part is not larger than the angle of the central angle corresponding to the arc-shaped surface on the rotating shell.

[0029] Furthermore, flow channels are provided on both sides of the storage shell, and several intercepting rods are fixedly connected to the flow channels.

[0030] Compared with the prior art, the present invention has at least the following beneficial effects: by periodically replacing the storage shell that first comes into contact with the exhaust gas, the present invention ensures that the highly polluting activated carbon is replaced in a timely manner, avoids the overall adsorption efficiency decline caused by local saturation, and reduces the number of overall replacements, thus ensuring the adsorption effect of activated carbon while improving the utilization rate of activated carbon.

[0031] Through the coordinated action of the electric push rod, the limiting groove, and the elastic telescopic rod, the machine can be replaced without stopping, ensuring the continuity of exhaust gas treatment.

[0032] The sensor monitors the pollutant concentration in real time. When the detected concentration exceeds the threshold, the rotating shell drives the storage shell inside to rotate synchronously, turning the flow channels on the storage shell into a vertical arrangement. This increases the flow area of ​​the exhaust gas, reduces wind resistance, increases the contact area between the exhaust gas and activated carbon, and improves the treatment efficiency of high-concentration exhaust gas. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0034] Figure 2 This is a three-dimensional structural cross-sectional view of the outer casing of the present invention;

[0035] Figure 3 This is a three-dimensional structural diagram of the first and second partitions of the present invention;

[0036] Figure 4 This is a three-dimensional sectional view of the mounting plate of the present invention;

[0037] Figure 5 This is a three-dimensional structural diagram of the first electric push rod and connecting rod of the present invention;

[0038] Figure 6 This is a three-dimensional structural diagram of the storage shell and elastic telescopic rod of the present invention;

[0039] Figure 7 This is a three-dimensional structural cross-sectional view of the mounting shell of the present invention;

[0040] Figure 8 This is an exploded view of the mounting shell and rotating shell of the present invention;

[0041] Figure 9 This is a three-dimensional sectional view of the fixing plate of the present invention;

[0042] Figure 10 This is a three-dimensional structural diagram of the flow channel and interceptor bar of the present invention.

[0043] Component names and serial numbers in the diagram: 1. Outer shell, 2. First partition, 3. Second partition, 4. Mounting shell, 5. Mounting plate, 6. Storage shell, 7. Elastic telescopic rod, 8. Limiting groove, 9. First electric push rod, 10. Connecting rod, 11. Rotating plate, 12. Second electric push rod, 13. Fixed plate, 14. Electric rotating shaft, 141. Moving block, 142. Connecting block, 15. Rotating shell, 16. Rotating disk, 161. Positioning groove, 162. Arc-shaped part, 17. Self-locking motor, 171. Flow groove, 172. Intercepting rod, 18. Guide plate. Detailed Implementation

[0044] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] Example 1

[0046] Considering that in the process of using existing activated carbon adsorption boxes to treat VOCs waste gas, pollutants are more easily adsorbed on the surface activated carbon, and its microporous structure will quickly become saturated or even blocked, while the deep activated carbon, due to its lighter degree of pollution, still retains some adsorption capacity, under the current technical conditions, the activated carbon is usually replaced periodically to ensure that the activated carbon adsorption box can treat VOCs waste gas normally during use. However, this will lead to the forced disposal of the deep activated carbon even when it is still usable, resulting in waste of activated carbon and increased disposal costs of waste activated carbon. In response, this invention proposes a VOCs waste gas treatment device for chemical production to solve the above problems.

[0047] For the VOCs exhaust gas treatment device, please refer to Figures 1-7 The system includes: an outer shell 1; two first partitions 2, both fixedly connected to the outer shell 1; two second partitions 3, both fixedly connected to the outer shell 1; two mounting plates 5, both detachably connected to the outer shell 1, with mounting shells 4 fixedly connected to the mounting plates 5. The mounting shells 4 are located between the corresponding first partitions 2 and second partitions 3. A rectangular array of storage shells 6 is provided inside the mounting shells 4. A rectangular array of elastic telescopic rods 7 is fixedly connected to the storage shells 6. The telescopic ends of the elastic telescopic rods 7 pass through the storage shells 6. Symmetrically distributed limiting grooves 8 and symmetrically distributed rotating disks 16 are provided inside the mounting shells 4. The rotating disks 16 are provided with positioning grooves 161. The telescopic ends of the elastic telescopic rods 7 slide within the corresponding limiting grooves 8 and corresponding positioning grooves 161; a guide plate 18, fixedly connected to the outer shell 1 and fixedly connected to the upper first partition 2 and the lower second partition 3. The two mounting shells 4 are located on both sides of the guide plate 18; and a drive assembly, located inside the outer shell 1, used to change the position of all storage shells 6.

[0048] In the above scheme, the left side of the outer shell 1 is connected to the exhaust gas conveying pipe, and the right side of the outer shell 1 is connected to the exhaust module; the two first partitions 2 are distributed vertically, and both first partitions 2 are located on the left side inside the outer shell 1; the two second partitions 3 are located on the right side inside the outer shell 1; both mounting shells 4 are located inside the outer shell 1; the mounting plate 5 is located in front of the adjacent mounting shell 4, and the adjacent mounting shell 4 can be pulled out from the outer shell 1 through the mounting plate 5; the storage shells 6 in the same mounting shell 4 are arranged in a matrix of four, with two adjacent storage shells 6 attached vertically, and there is a distance between two corresponding storage shells 6 on the left and right sides, and the length of this distance is greater than the length of the storage shell 6 in the left and right direction. Initially, the storage shell 6 is filled with a certain amount of activated carbon. The elastic telescopic rods 7 on the same storage shell 6 are arranged in a matrix of four, with two located on the front side of the storage shell 6 and two located on the rear side of the storage shell 6. The telescopic ends of the elastic telescopic rods 7 are inlaid with freely rotatable ball bearings to reduce the friction between the telescopic ends of the elastic telescopic rods 7 and the corresponding mounting shell 4. The limiting grooves 8 inside the mounting shell 4 are two symmetrically distributed, and both are located inside the mounting shell 4. In this embodiment, the rotating disk 16 is fixedly connected to the mounting shell 4, and the positioning groove 161 is located on the right side of the adjacent limiting groove 8. There are gaps between the guide plate 18 and the lower first partition 2 and the upper second partition 3. The guide plate 18, the two first partitions 2 and the two second partitions 3 together divide the internal space of the outer shell 1 into upper and lower flow channels.

[0049] For further details, please refer to [link / reference]. Figure 3 The guide plate 18 has symmetrically distributed inclined surfaces on the side away from the second partition 3 to guide airflow.

[0050] In the above scheme, the inclined surface on the guide plate 18 is located on its left side, and the two inclined surfaces are symmetrically distributed vertically.

[0051] For further details, please refer to [link / reference]. Figure 8 Both the limiting groove 8 and the positioning groove 161 are composed of two horizontal parts and two vertical parts, and the horizontal parts on both are connected to the vertical parts. The horizontal part of the limiting groove 8 is connected to the corresponding horizontal part of the adjacent positioning groove 161.

[0052] In the above scheme, the vertical part of the limiting groove 8 is located on its left side, and the vertical part of the positioning groove 161 is located on its right side. The distance between the two vertical parts on the limiting groove 8 and the positioning groove 161 is equal to the distance between the central axes of the two elastic telescopic rods 7 on the front side of the same storage shell 6.

[0053] For further details, please refer to [link / reference]. Figures 2-5The driving assembly includes: two first electric push rods 9, both fixed to the outer shell 1; two connecting rods 10, each fixed to the telescopic end of the corresponding first electric push rod 9; two rotating plates 11, each rotatably connected to the corresponding connecting rod 10, the rotating plates 11 being used to push the corresponding storage shell 6; and two second electric push rods 12, both fixed to the outer shell 1, the telescopic end of the second electric push rod 12 passing through and slidably connected to the second partition 3, the mounting shell 4 having a through hole for the telescopic end of the corresponding second electric push rod 12 to slide, the second electric push rod 12 being used to push the corresponding storage shell 6.

[0054] In the above scheme, the rotating plate 11 is located below the corresponding connecting rod 10. In the initial state, the rotating plate 11 can only rotate counterclockwise around its connection with the corresponding connecting rod 10. The two rotating plates 11 are used to push the storage shell 6 on the upper left side of the corresponding mounting shell 4 to move to the right. The lower side of the rotating plate 11 is lower than the upper side of the corresponding storage shell 6. The connection between the rotating plate 11 and the corresponding connecting rod 10 is located above the corresponding storage shell 6. The two second electric push rods 12 located on the second partition 3 are used to drive the storage shell 6 on the lower right side of the corresponding mounting shell 4 to move to the left. The first electric push rod 9 and the second electric push rod 12 are both multi-stage push rods, which are not shown in detail in the figure.

[0055] For further details, please refer to [link / reference]. Figure 3 The two first electric push rods 9 and the two second electric push rods 12 are staggered, with the extension ends of the two first electric push rods 9 facing to the right and the extension ends of the two second electric push rods 12 facing to the left.

[0056] For further details, please refer to [link / reference]. Figures 2-7 and Figure 9 The drive assembly also includes: two fixed plates 13, each fixed to a corresponding mounting shell 4, the fixed plates 13 having grooves and fitting against an adjacent first partition 2; two electric rotating shafts 14, each rotatably connected to a groove in a corresponding fixed plate 13, the electric rotating shafts 14 having external threads; two moving blocks 141, each threadedly connected to a corresponding electric rotating shaft 14, the moving blocks 141 sliding within a groove in a corresponding fixed plate 13; and two connecting blocks 142, each rotatably connected to a corresponding moving block 141, the connecting blocks 142 being located on the side of an adjacent moving block 141 near an adjacent storage shell 6, a torsion spring fixed between the connecting blocks 142 and the moving blocks 141, and a through hole for the connecting blocks 142 to slide through.

[0057] In the above scheme, the fixing plate 13 is located between the mounting shell 4 and the corresponding first partition plate 2, and the groove on the fixing plate 13 faces to the right; the moving block 141 can only slide up and down along the groove of the corresponding fixing plate 13, and the electric rotating shaft 14 drives the adjacent electric rotating shaft 14 to move through its external thread during rotation; in the initial state, the connecting block 142 can only rotate counterclockwise around its connection with the adjacent moving block 141 (rotation direction is as follows). Figure 4 (The perspective is the baseline perspective).

[0058] The specific workflow of the above scheme is as follows:

[0059] When this device is needed to treat VOCs waste gas (hereinafter referred to as waste gas), the operator connects the left side of the device to the waste gas delivery pipeline and the right side to the extraction module. Then, the operator starts the extraction module to draw the waste gas to the right. During the flow of waste gas, the inclined surface on the guide plate 18 splits the waste gas into upper and lower parts, forcing some waste gas to flow upward and some waste gas to flow downward. Then, the waste gas flowing downward flows to the right along the gap between the lower first partition 2 and the guide plate 18, and the waste gas flowing upward flows to the right along the gap between the upper first partition 2 and the outer shell 1. During the flow of waste gas to the right, it is blocked by the second partition 3, forcing the waste gas to flow through the left storage shell 6 (some waste gas flows upward through the two upper storage shells 6, and some waste gas flows downward through the two lower storage shells 6). The following description uses the process of waste gas flowing downward as an example:

[0060] As the exhaust gas flows downward through the two storage shells 6, impurities contained in the exhaust gas are adsorbed by the activated carbon inside the storage shells 6. Since the activated carbon in the upper left storage shell 6 comes into contact with the exhaust gas first, the volume of pollutants adsorbed on the activated carbon there is the largest. After the exhaust gas has been treated by this device for a predetermined time (set by the operator), the volume of pollutants adsorbed by the activated carbon in the upper left storage shell 6 reaches the set threshold. Subsequently, the operator replaces the upper left storage shell 6, that is, replaces the activated carbon that first came into contact with the exhaust gas, in order to improve the utilization rate of the activated carbon. The specific process is as follows:

[0061] The staff starts the first electric push rod 9, which causes its telescopic end to drive the connecting rod 10 to move to the left in sync. The connecting rod 10 drives the rotating plate 11 to move to the left. During the movement, the rotating plate 11 pushes the storage shell 6 on the upper left side to the right. The storage shell 6 drives the four elastic telescopic rods 7 on it to move. During this process, the telescopic ends of the elastic telescopic rods 7 slide along the adjacent limiting grooves 8, thereby maintaining the horizontal state of the storage shell 6.

[0062] When the storage shell 6 on the upper left side moves to the right and loses contact with the storage shell 6 on the lower left side, the staff turns off the first electric push rod 9 and starts the electric rotating shaft 14 at the same time. During the rotation, the electric rotating shaft 14 drives the moving block 141 to move upward through its external thread. The moving block 141 drives the connecting block 142 to move upward, which in turn drives the storage shell 6 on the lower left side to move upward. The storage shell 6 on the lower left side drives the four elastic telescopic rods 7 on it to move upward synchronously. The telescopic ends of the elastic telescopic rods 7 move upward along the adjacent vertical parts of the adjacent limiting grooves 8.

[0063] When the lower left storage shell 6 moves upward to its limit position (i.e., after reaching the upper left side), the operator shuts off the electric rotating shaft 14 and starts the second electric push rod 12. The telescopic end of the second electric push rod 12 extends to the left and passes through the mounting shell 4 to contact the lower right storage shell 6. Then, the telescopic end of the second electric push rod 12 pushes the lower right storage shell 6, causing the telescopic end of the elastic telescopic rod 7 on the lower right storage shell 6 to move to the left along the horizontal part of the lower limit groove 8. After the lower right storage shell 6 moves to the left and loses contact with the upper right storage shell 6, the upper right storage shell 6 moves downward under its own weight. The telescopic end of the elastic telescopic rod 7 on it moves downward along the vertical part adjacent to the adjacent limit groove 8. When the upper right storage shell 6 moves downward to contact the telescopic end of the second electric push rod 12, the upper right storage shell 6 stops moving downward.

[0064] When the storage shell 6 on the lower right side moves to its extreme position on the left (i.e., after reaching the lower left side), the staff will activate the second electric push rod 12 in the opposite direction to retract the telescopic end of the second electric push rod 12. When the telescopic end of the second electric push rod 12 moves to the right until it loses contact with the storage shell 6 on the upper right side, the storage shell 6 on the upper right side will continue to move downward.

[0065] Simultaneously with the reverse activation of the second electric push rod 12, the electric rotating shaft 14 is activated in the reverse direction. The electric rotating shaft 14 drives the moving block 141 to move downward. The moving block 141 drives the connecting block 142 to move. After the connecting block 142 moves downward and contacts the lower side of the through hole of the storage shell 6 located on the upper left side, the storage shell 6 limits the connecting block 142 as it continues to move downward. This causes the connecting block 142 to rotate around the connection point with the moving block 141 under the pressure of the storage shell 6, and the torsion spring between the two to store torque. At the same time, as the connecting block 142 moves downward, it also contacts the storage shell 6 located on the lower left side and is kept in the rotated position by the limitation of the storage shell 6 until the connecting block 142 moves into the through hole of the storage shell 6. Then, the connecting block 142 rotates to the horizontal position under the action of the torsion spring.

[0066] After the storage case 6 on the upper right side moves downward to its limit position (after the storage case 6 on the upper right side moves to the lower right side), the operator restarts the first electric push rod 9. The first electric push rod 9 drives the storage case 6, which was originally located on the upper left side, to continue moving to the right. After the storage case 6 moves to the upper right side, the operator restarts the first electric push rod 9 in the opposite direction, causing the telescopic end of the first electric push rod 9 to drive the rotating plate 11 to move to the left. When the rotating plate 11 moves to the left and contacts the storage case 6, which is now on the upper left side, the storage case 6 then acts as a counteracting force on the rotating plate as the rotating plate continues to move to the left. 11 is limited, causing the rotating plate 11 to rotate upward around its connection with the connecting rod 10. When the rotating plate 11 moves to the left of the storage shell 6, which is currently located on the upper right side, the rotating plate 11 rotates downward under its own gravity until it moves to the initial position on the left. Then, the operator turns off the first electric push rod 9 to complete the replacement of the upper left storage shell 6, thereby extending the service life of the activated carbon in the storage shell 6. In subsequent use of this device to treat waste gas, the above operation is repeated to ensure the treatment efficiency of waste gas and the utilization rate of activated carbon.

[0067] After the device has been used for a specified period (selected by the operator), the operator connects the left side of the outer casing 1 to the air supply pipe, introduces air into the device, and after the residual exhaust gas in the device has been treated, disconnects the device from the control supply pipe and the device from the exhaust module. Then, the two mounting casings 4 are removed, the activated carbon in all the storage casings 6 is replaced, and the device is cleaned and maintained in preparation for future use.

[0068] Example 2

[0069] Based on Example 1, further refer to... Figures 4-8 It also includes: two rotating shells 15, which are rotatably connected to the corresponding mounting shells 4. The rotating shells 15 are connected to the mounting shells 4. The two sides of the rotating shells 15 are fixed to the corresponding rotating disks 16. The rotating disks 16 are rotatably connected to the corresponding mounting shells 4. Two self-locking motors 17 are symmetrically distributed and fixed to the corresponding mounting plates 5. The output shaft of the self-locking motors 17 passes through the adjacent mounting plates 5 and the adjacent mounting shells 4 and is fixed to the adjacent rotating disks 16. A sensor for detecting the concentration of exhaust gas is provided inside the outer shell 1.

[0070] In the above scheme, the two rotating shells 15 are located on the right side of the corresponding mounting shell 4, and the left side of the rotating shell 15 is connected to the corresponding mounting shell 4; the two rotating disks 16 are located on the front and rear sides of the rotating shell 15 respectively; the sensor inside the outer shell 1 is an existing device and is not shown in the figure. The sensor and the self-locking motor 17 are both connected to the remote control terminal network.

[0071] Furthermore, see Figure 8 The mounting shell 4 has an arc-shaped part 162 on the side away from the corresponding first electric push rod 9, and the rotating shell 15 has symmetrically distributed arc-shaped surfaces. The arc-shaped part 162 and the arc-shaped surface on the rotating shell 15 have the same radius and are concentric.

[0072] In the above scheme, the arc-shaped surface on the mounting shell 4 is located on its inner right side, and the arc-shaped surface on the rotating shell 15 is located on its upper and lower sides.

[0073] Furthermore, see Figure 8 A through hole is provided on the lower side of the arc-shaped part 162. The angle of the central angle corresponding to the through hole on the arc-shaped part 162 is not much different from the angle of the central angle corresponding to the arc-shaped surface on the rotating shell 15.

[0074] In the above scheme, the through hole on the lower side of the arc-shaped part 162 is used to allow exhaust gas to flow after the adjacent rotating shell 15 is rotated 90° clockwise. In the initial state, the arc-shaped surface on the lower side of the rotating shell 15 blocks the through hole on the adjacent arc-shaped part 162.

[0075] Furthermore, see Figure 10 Both sides of the storage shell 6 are provided with flow channels 171, and several intercepting rods 172 are fixedly connected to the flow channels 171.

[0076] In the above scheme, flow channels 171 are provided on both the left and right sides of the storage shell 6, and the height of the flow channels 171 is no more than half the height of the storage shell 6, so that the exhaust gas can still pass through the storage shell 6 after it is rotated 90°; the specific number of interception rods 172 in each flow channel 171 can be selected by the staff to maintain the stability of the activated carbon position in the corresponding storage shell 6.

[0077] The specific workflow of the above scheme is as follows (using the example of downward flow of exhaust gas):

[0078] During the process of exhaust gas flowing into the outer casing 1, the sensor inside the outer casing 1 monitors the concentration of pollutants in the gas. When the concentration of pollutants exceeds the threshold (the threshold is set by the staff), the remote control terminal starts the self-locking motor 17, whose output shaft drives the front rotating disk 16 to rotate. The rotating disk 16 drives the rotating shell 15 and the rear rotating disk 16 to rotate synchronously. The rotating shell 15 drives the two storage shells 6 inside it to rotate clockwise synchronously.

[0079] When the rotating shell 15 rotates 90°, the remote control terminal shuts off the self-locking motor 17. At this time, the two storage shells 6 on the right side rotate 90° simultaneously, so that during the flow of the waste gas, some of the waste gas can flow through the flow grooves 171 on the two storage shells 6 on the right side, increasing the contact area between the waste gas and the activated carbon, thereby improving the waste gas treatment efficiency when the waste gas concentration increases.

[0080] After the storage shell 6, initially located on the upper left, is moved to the upper right, the activated carbon inside the storage shell 6 is generally highly contaminated. However, the activated carbon in the lower part of the storage shell 6 is less contaminated than the activated carbon in the upper part. Therefore, after the rotating shell 15 is rotated 90°, the activated carbon in the lower part of the rotating shell 15 is converted to a vertical distribution, so that this part of the activated carbon can still adsorb pollutants in the exhaust gas, further improving the utilization rate of activated carbon.

[0081] After the pollutant content in the exhaust gas stabilizes, the remote control terminal controls the self-locking motor 17 to drive the rotating shell 15 to rotate counterclockwise. After the rotating shell 15 rotates 90° counterclockwise, the two storage shells 6 inside the rotating shell 15 rotate to their initial positions. Then, the remote control terminal shuts off the self-locking motor 17. The above operation is repeated after the pollutant content in the exhaust gas increases again.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A VOCs waste gas treatment device for chemical production, characterized in that, include: Outer shell (1); The first partition (2) and the second partition (3) each have two, and both are fixed inside the outer shell (1); Mounting plate (5), having two, both detachably connected to the outer shell (1), mounting plate (5) fixedly connected to mounting shell (4), mounting shell (4) located between the corresponding first partition (2) and second partition (3), mounting shell (4) is provided with a rectangular array of storage shells (6), the storage shell (6) is filled with activated carbon, the storage shell (6) is fixedly connected with a rectangular array of elastic telescopic rods (7), the telescopic ends of the elastic telescopic rods (7) pass through the storage shell (6), mounting shell (4) is provided with symmetrically distributed limiting grooves (8) and symmetrically distributed rotating disks (16), the rotating disks (16) are provided with positioning grooves (161). The telescopic end of the elastic telescopic rod (7) slides in the corresponding limiting groove (8) and the corresponding positioning groove (161). The left side of the outer shell (1) is connected to the exhaust gas conveying pipe, and the right side of the outer shell (1) is connected to the exhaust module. The two first partitions (2) are distributed vertically, and both first partitions (2) are located on the left side inside the outer shell (1). The two second partitions (3) are located on the right side inside the outer shell (1). The storage shells (6) in the same mounting shell (4) are arranged in a matrix of four. The two adjacent storage shells (6) are attached to each other, and there is a distance between the two corresponding storage shells (6) on the left and right sides. The length of this distance is greater than the length of the storage shell (6) in the left and right direction. The guide plate (18) is fixed inside the outer shell (1) and is fixed to the first partition plate (2) on the upper side and the second partition plate (3) on the lower side. The two mounting shells (4) are located on both sides of the guide plate (18). There are gaps between the guide plate (18) and the first partition plate (2) on the lower side and the second partition plate (3) on the upper side. The guide plate (18) together with the two first partition plates (2) and the two second partition plates (3) divide the internal space of the outer shell (1) into two flow channels, upper and lower. A drive assembly is disposed within the housing (1), the drive assembly being used to change the position of all the storage housings (6); The guide plate (18) has symmetrically distributed inclined surfaces on the side away from the second partition (3) to guide airflow; The limiting groove (8) and the positioning groove (161) are both composed of two horizontal parts and two vertical parts, and the horizontal parts on both are connected to the vertical parts. The horizontal part of the limiting groove (8) is connected to the horizontal part of the adjacent positioning groove (161). The driving component includes: The first electric push rod (9) has two parts, both of which are fixed to the outer shell (1). The connecting rod (10) has two parts, which are respectively fixed to the telescopic ends of the first electric push rod (9); Two rotating plates (11) are respectively rotatably connected to the corresponding connecting rods (10). The rotating plates (11) are used to push the corresponding storage shells (6). The second electric push rod (12) has two parts, both of which are fixed to the outer shell (1). The telescopic end of the second electric push rod (12) passes through the second partition (3) and is slidably connected to it. The mounting shell (4) is provided with a through hole for sliding the telescopic end of the corresponding second electric push rod (12). The second electric push rod (12) is used to push the corresponding storage shell (6). The two first electric actuators (9) and the two second electric actuators (12) are staggered; The driving component also includes: There are two fixing plates (13), which are respectively fixed to the corresponding mounting shells (4). The fixing plates (13) are provided with grooves and are attached to the adjacent first partition (2). Two electric rotating shafts (14) are respectively rotatably connected to the grooves of the corresponding fixing plate (13), and the electric rotating shafts (14) are provided with external threads; There are two movable blocks (141), which are threadedly connected to the corresponding electric rotating shafts (14) respectively. The movable blocks (141) slide in the grooves of the corresponding fixed plates (13). There are two connecting blocks (142), which are respectively limited and rotatably connected to the corresponding moving blocks (141). The connecting blocks (142) are located on the side of the adjacent moving blocks (141) close to the adjacent storage shell (6). A torsion spring is fixed between the connecting blocks (142) and the moving blocks (141). The storage shell (6) is provided with a through hole for the connecting blocks (142) to slide.

2. A VOCs waste gas treatment device for chemical production according to claim 1, characterized in that, It also includes: Two rotating shells (15) are rotatably connected to the corresponding mounting shells (4). The rotating shells (15) are connected to the mounting shells (4). The two sides of the rotating shells (15) are fixed to the corresponding rotating disks (16). The rotating disks (16) are rotatably connected to the corresponding mounting shells (4). Two self-locking motors (17) are symmetrically distributed and fixed to the corresponding mounting plates (5). The output shaft of the self-locking motor (17) passes through the adjacent mounting plates (5) and the adjacent mounting shells (4) and is fixed to the adjacent rotating disk (16). A sensor for detecting the concentration of exhaust gas is provided inside the shell (1).

3. A VOCs waste gas treatment device for chemical production according to claim 2, characterized in that, The mounting shell (4) has an arc-shaped part (162) on the side away from the first electric push rod (9), and the rotating shell (15) has symmetrically distributed arc-shaped surfaces. The arc-shaped part (162) and the arc-shaped surface on the rotating shell (15) have the same radius and are concentric.

4. A VOCs waste gas treatment device for chemical production according to claim 3, characterized in that, A through hole is provided on the lower side of the arc-shaped part (162), and the angle of the central angle corresponding to the through hole on the arc-shaped part (162) is not larger than the angle of the central angle corresponding to the arc surface on the rotating shell (15).

5. A VOCs waste gas treatment device for chemical production according to claim 4, characterized in that, Both sides of the storage shell (6) are provided with flow channels (171), and several intercepting rods (172) are fixedly connected to the flow channels (171).

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