A system for treating waste gas from a cigarette package printing workshop

Abstract

The application discloses a kind of active carbon waste gas treatment systems of cigarette packaging printing workshop, it is related to waste gas treatment technical field, including waste gas collecting device, pretreatment device, activated carbon adsorption tank, catalytic combustion device and desorption regeneration device, the bottom end of the activated carbon adsorption tank is equipped with air inlet discharge port, the top of activated carbon adsorption tank is equipped with exhaust port, one side of activated carbon adsorption tank is equipped with manhole, the inside of activated carbon adsorption tank is equipped with upper net baffle and lower net baffle respectively, and activated carbon particles are equipped between upper net baffle and lower net baffle.The present application can adjust the distance between upper net baffle and lower net baffle by lifting drive mechanism, compact activated carbon particles, and improve the adsorption effect.The distributor is arranged at the air inlet in the adsorption tank, so that the waste gas is uniformly dispersed, effectively solving the problems of low adsorption and regeneration efficiency, inconvenient maintenance and other problems of traditional waste gas treatment system, realizing efficient and stable treatment of waste gas, and reaching the environmental protection standard.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, and particularly relates to an activated carbon waste gas treatment system for a cigarette packaging and printing workshop. BACKGROUND

[0002] In the cigarette packaging and printing industry, a large amount of ink, organic solvents and other materials are used in the production process, which inevitably produces waste gas containing volatile organic compounds (VOCs) and other pollutants. If these waste gases are directly discharged without effective treatment, not only will they cause serious harm to the health of workers in the workshop, such as causing respiratory diseases, nervous system damage, and even cancer after long-term exposure, but also will pollute the surrounding air environment, which is one of the important factors for the formation of haze, photochemical smog and other bad weather.

[0003] At present, as a common means for treating such waste gas, the activated carbon adsorption method has certain effectiveness, but the traditional activated carbon waste gas treatment system still has many problems to be solved. For example, the activated carbon is not evenly distributed in the adsorption tank, which leads to insufficient contact between the waste gas and the activated carbon, and low adsorption efficiency; after the activated carbon is saturated, the regeneration process is not efficient enough, which affects the continuity and stability of the overall waste gas treatment system; and there are inconveniences in the maintenance of the equipment, such as the replacement of activated carbon, the cleaning of the inside of the equipment, and other difficult operations, which increase the maintenance cost and time cost. Therefore, it is urgent to develop an activated carbon waste gas treatment system for a cigarette packaging and printing workshop which can overcome the above-mentioned defects, is efficient, stable and easy to maintain. SUMMARY

[0004] In order to solve the problems mentioned in the background art, the present application provides an activated carbon waste gas treatment system for a cigarette packaging and printing workshop.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] An activated carbon waste gas treatment system for a cigarette packaging and printing workshop, comprising a waste gas collecting device, a pretreatment device, an activated carbon adsorption tank, a catalytic combustion device and a desorption regeneration device, the bottom end of the activated carbon adsorption tank is provided with an air inlet discharge port, the top end of the activated carbon adsorption tank is provided with an air outlet, one side of the activated carbon adsorption tank is provided with a manhole, the inside of the activated carbon adsorption tank is respectively provided with an upper net partition and a lower net partition, activated carbon particles are arranged between the upper net partition and the lower net partition, a lifting driving mechanism is arranged on the inner wall of the top end of the activated carbon adsorption tank, and the output end of the lifting driving mechanism is fixed with the upper net partition.

[0007] Preferably, a distributor is mounted at a position corresponding to the air inlet discharge port in the inside of the activated carbon adsorption tank, a plurality of distribution pipes are arranged around the distributor, and a plurality of air outlet holes are equidistantly arranged at the top end of the distribution pipes.

[0008] Preferably, the lifting driving mechanism comprises a hydraulic cylinder fixed on the inner wall of the top end of the activated carbon adsorption tank, a transmission box is fixed on the top end of the upper net partition, and the output shaft of the hydraulic cylinder is fixed on the top end of the transmission box.

[0009] Preferably, a rotating frame is rotatably installed in one end of the receiving opening on the upper net partition, and a stirrer is rotatably installed on the rotating frame.

[0010] Preferably, an elastic telescopic rod is fixed in the transmission box, a connecting bracket is fixed on the top end of the elastic telescopic rod, a vertical rack is fixed on the bottom end of the connecting bracket, a horizontal transmission shaft is rotatably installed on the top end of the upper net partition, first gears are fixed on both ends of the horizontal transmission shaft, a second gear is fixed on the rotating frame, one of the first gears is engaged with the vertical rack, and the other first gear is engaged with the second gear.

[0011] Preferably, a lifting rod is fixed on the top end of the connecting bracket, the top end of the connecting bracket is movably extended to the outside of the transmission box, a baffle is installed on the fixed part of the hydraulic cylinder, and the position of the baffle corresponds to the lifting rod.

[0012] Preferably, an inner hexagonal sleeve is rotatably installed on the rotating frame, the inner hexagonal sleeve is fixed with the stirrer, a driving shaft is rotatably installed on the inner wall of the top end of the activated carbon adsorption tank, the driving shaft is driven to rotate by a first rotary motor, and a prismatic bolt corresponding to the inner hexagonal sleeve is fixed on the bottom end of the driving shaft.

[0013] Preferably, the top end of the desorption regeneration device is provided with an activated carbon adding port and a hot air inlet pipe, the bottom end of the desorption regeneration device is provided with an air outlet, a stirring shaft is rotatably installed in the desorption regeneration device, and a plurality of groups of stirring blades are distributed equidistantly on the stirring shaft.

[0014] Preferably, the top end of the stirring shaft is extended to the outside of the desorption regeneration device and connected with the hot air inlet pipe through a rotary joint, the stirring shaft and the stirring blades are hollow and communicate with each other, and a plurality of air injection ports are arranged on the stirring blades.

[0015] Preferably, the air injection ports are equidistantly distributed on the stirring blades, and a scraper is fixed on the stirring blades and in contact with the inner wall of the desorption regeneration device, a second rotary motor is fixed on the top end of the desorption regeneration device, belt pulleys are fixed on the outside of the output shaft of the second rotary motor and the stirring shaft, a belt is sleeved between the outer sides of the two belt pulleys, an observation window is arranged on the outside of the desorption regeneration device, the observation window is rectangular, a transparent glass is arranged in the observation window, a flow meter is installed on the hot air inlet pipe, and a backwashing branch is connected to the hot air inlet pipe.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. Adjust the distance between the upper and lower net partitions by the lifting drive mechanism to compact the activated carbon particles, reduce the inter-particle voids, make the exhaust gas contact the activated carbon surface more fully, improve the adsorption efficiency of pollutants in the exhaust gas, and the distributor is arranged to make the exhaust gas enter from the air inlet discharge port, then uniformly dispersed in the activated carbon adsorption tank through the distribution pipe and the exhaust hole, fully contacts with the activated carbon particles, and ensures the uniform adsorption effect. The agitator on the upper net partition can be automatically rotated to the horizontal state and stored in the storage port when not in use, ensuring that the upper net partition will not interfere when moving downward, and can be automatically rotated to the vertical state when needed, compact structure, easy to use.

[0018] 2. The agitator on the upper net partition can be automatically rotated to the horizontal state and stored in the storage port when not in use, ensuring that the upper net partition will not interfere when moving downward, and can be automatically rotated to the vertical state when needed, compact structure, easy to use.

[0019] 3. In the desorption regeneration device, the stirring shaft and the hot air inlet pipe are connected through a rotary joint, hot air is sprayed from the air outlet of the stirring blade and directly acts on the activated carbon particles, while the stirring blade stirs the activated carbon, greatly improving the contact efficiency of hot air and activated carbon, accelerating the desorption process and improving the regeneration efficiency.

[0020] 4. The scraper on the stirring blade scrapes off the residual activated carbon particles on the tank wall during stirring to prevent incomplete discharge; the backwashing branch of the hot air inlet pipe can introduce cleaning liquid, which is sprayed from the air outlet to flush the inner wall of the device, ensuring the cleanliness of the equipment and maintaining a good desorption regeneration environment.

[0021] 5. The observation window facilitates the staff to master the regeneration situation of activated carbon in real time; the flow meter accurately measures the hot air flow, which is beneficial to precise control according to the demand, and ensures the stable and efficient desorption regeneration process. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0023] Figure 1 The flowchart of the present application;

[0024] Figure 2 The perspective view of the activated carbon adsorption tank of the present application;

[0025] Figure 3 The front view of the activated carbon adsorption tank of the present application;

[0026] Figure 4The perspective view of the activated carbon adsorption tank of the present application;

[0027] Figure 5 The schematic diagram of the distributor structure of the present application;

[0028] Figure 6 The top view of the upper mesh partition plate of the present application;

[0029] Figure 7 The schematic diagram of the stirs of the upper mesh partition plate of the present application in the retracted state;

[0030] Figure 8 The perspective view of the stirs of the upper mesh partition plate of the present application in the lowered state;

[0031] Figure 9 The front view of the stirs of the upper mesh partition plate of the present application in the lowered state;

[0032] Figure 10 The perspective view of the desorption regeneration device of the present application;

[0033] Figure 11 The sectional view of the desorption regeneration device of the present application;

[0034] Figure 12 The Figure 11 The enlarged detail view of the position A;

[0035] In the figure: 1, waste gas collecting device; 2, activated carbon adsorption tank; 201, air inlet; 202, air outlet; 203, manhole; 204, lower mesh partition plate; 206, distributor; 2061, distribution pipe; 2062, air outlet hole; 207, activated carbon particles; 3, pretreatment device; 4, catalytic combustion device; 5, desorption regeneration device; 501, activated carbon inlet; 502, air outlet; 503, observation window; 504, stirring shaft; 505, hot air inlet pipe; 506, backwash branch; 507, flow meter; 508, second rotary motor; 509, pulley; 510, belt; 511, stirring blade; 512, scraper; 513, air jet; 7, upper mesh partition plate; 701, transmission box; 7011, elastic telescopic rod; 7012, lifting rod; 7013, connecting bracket; 7014, vertical rack; 7015, horizontal transmission shaft; 7016, first gear; 702, hydraulic cylinder; 7021, baffle; 703, rotating frame; 7031, second gear; 7032, internal hex socket; 704, stirrer; 705, storage port; 8, drive shaft; 801, first rotary motor; 802, prismatic bolt. DETAILED DESCRIPTION

[0036] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0037] Embodiment 1

[0038] With reference to Figures 1-12 A waste gas treatment system for a cigarette packaging printing workshop, comprising a waste gas collecting device 1, a pretreatment device 3, an activated carbon adsorption tank 2, a catalytic combustion device 4 and a desorption regeneration device 5, the bottom end of the activated carbon adsorption tank 2 is provided with an air inlet discharge port 201, the top end of the activated carbon adsorption tank 2 is provided with an exhaust port 202, one side of the activated carbon adsorption tank 2 is provided with a manhole 203, which facilitates workers to enter the inside of the activated carbon adsorption tank 2 to perform equipment inspection, activated carbon addition or maintenance and the like, the inside of the activated carbon adsorption tank 2 is respectively provided with an upper net partition plate 7 and a lower net partition plate 204, activated carbon particles are arranged between the upper net partition plate 7 and the lower net partition plate 204, a lifting driving mechanism is arranged on the inner wall of the top end of the activated carbon adsorption tank 2, and the output end of the lifting driving mechanism is fixed with the upper net partition plate 7;

[0039] The waste gas collecting device 1 is arranged at each waste gas discharge point of the printing equipment, such as above the ink tank of the printing machine and the outlet of the drying channel, a gas collecting hood is installed, the waste gas collected by each gas collecting hood is collected into a main pipeline through a ventilation pipeline, and then is transported to the pretreatment device 3. The pretreatment device 3 is arranged before the activated carbon adsorption tank 2 because the waste gas may contain ink particles, dust and other impurities, which will affect the adsorption effect and service life of the activated carbon. Therefore, the pretreatment device 3 is arranged before the activated carbon adsorption tank 2. The pretreatment device 3 usually adopts a filtering mode and is composed of a primary filter and a medium filter. The primary filter can remove larger particle impurities, and the medium filter further removes smaller particle dust and part of aerosols, so as to ensure that the waste gas entering the activated carbon adsorption tank 2 is relatively clean.

[0040] The activated carbon has a huge specific surface area and a rich microporous structure, and has a strong adsorption capacity for VOCs. The exhaust gas slowly passes through the activated carbon layer in the activated carbon adsorption tank 2, and the VOCs are adsorbed on the surface of the activated carbon. The treated gas is directly discharged. As the amount of VOCs adsorbed by the activated carbon increases, the adsorption capacity of the activated carbon will gradually decrease. In order to restore the adsorption performance of the activated carbon, it is necessary to regenerate the activated carbon by desorption. The activated carbon particles 207 in the activated carbon adsorption tank 2 are transferred to the desorption regeneration device 5, hot air is introduced into the desorption regeneration device 5, the VOCs on the surface of the activated carbon are heated and desorbed, and then introduced into the catalytic combustion device 4. The catalytic combustion device is provided with a catalyst. Under the action of the catalyst, the VOCs are oxidized at a lower temperature to generate carbon dioxide and water. The heat released by the catalytic combustion reaction can be used to heat the hot air for desorption, realizing energy recycling and reducing the operating cost of the system.

[0041] The upper net partition plate 7 is lifted by the lifting drive mechanism, the distance between the upper net partition plate 7 and the lower net partition plate 204 can be adjusted, the activated carbon particles 207 in the activated carbon adsorption tank 2 can be compacted, the activated carbon particles 207 are compacted, the interstitial space between the particles is reduced, and the exhaust gas is more fully contacted with the surface of the activated carbon when passing through the activated carbon layer. More exhaust gas molecules have the opportunity to contact the adsorption sites of the activated carbon, thereby improving the adsorption efficiency of the pollutants in the exhaust gas.

[0042] The distributor 206 is installed at the position corresponding to the gas inlet and discharge port 201 in the interior of the activated carbon adsorption tank 2. A plurality of distribution pipes 2061 are arranged around the distributor 206, and a plurality of exhaust holes 2062 are equidistantly arranged at the top of the distribution pipes 2061.

[0043] After the exhaust gas enters the distributor 206 through the gas inlet and discharge port 201, it uniformly flows out through the distribution pipes 2061 and the exhaust holes 2062, and is uniformly dispersed in the interior of the activated carbon adsorption tank 2, fully contacts with the activated carbon particles 207, and improves the adsorption effect.

[0044] Example 2

[0045] Reference Figures 1-12 The difference between this embodiment and example 1 is that the lifting drive mechanism includes a hydraulic cylinder 702 fixed on the inner wall of the top end of the activated carbon adsorption tank 2, and the top end of the upper net partition plate 7 is fixed with a transmission box 701. The output shaft of the hydraulic cylinder 702 is fixed with the top end of the transmission box 701. The hydraulic cylinder 702 is elongated and shortened to drive the upper net partition plate 7 to move up and down.

[0046] One end inside of the receiving opening 705 of the upper net partition 7 is rotatably installed with a rotating frame 703, the rotating frame 703 is rotatably installed with a stirrer 704, the transmission box 701 is fixedly installed with an elastic telescopic rod 7011, the top end of the elastic telescopic rod 7011 is fixedly installed with a connecting bracket 7013, the bottom end of the connecting bracket 7013 is fixedly installed with a vertical rack 7014, the top end of the upper net partition 7 is rotatably installed with a horizontal transmission shaft 7015, both ends of the horizontal transmission shaft 7015 are fixedly installed with a first gear 7016, the rotating frame 703 is fixedly installed with a second gear 7031, one of the first gears 7016 is engaged with the vertical rack 7014, the other first gear 7016 is engaged with the second gear 7031;

[0047] When the elastic telescopic rod 7011 is in an uncompressed state, the vertical rack 7014 is driven to move to the highest position, at this time, the stirrer 704 is rotated to a horizontal state and is stored in the receiving opening 705, which ensures that the upper net partition 7 does not interfere when moving downward, when the activated carbon is deactivated, the activated carbon particles 207 can be washed with warm water before being transferred to the desorption regeneration device 5, alcohol, isopropyl alcohol, part of water-soluble resin and additives can be directly washed away by water, when warm water is added for washing, the upper net partition 7 is driven to move to the highest position, because the top end of the connecting bracket 7013 is fixedly installed with a lifting rod 7012, the top end of the connecting bracket 7013 is movably extended to the outside of the transmission box 701, the fixed part of the hydraulic cylinder 702 is installed with a baffle 7021, the position of the baffle 7021 corresponds to the lifting rod 7012, the baffle 7021 presses the lifting rod 7012 downward and compresses the elastic telescopic rod 7011, so that the vertical rack 7014 moves downward, and through the engagement transmission between the vertical rack 7014, the first gear 7016 and the second gear 7031, the stirrer 704 is driven to rotate by ninety degrees and is in a vertical state, by driving the stirrer 704 to rotate, the activated carbon particles 207 can be stirred at a low speed, which avoids damaging the physical properties of the activated carbon particles 207, and the washed activated carbon particles 207 are transferred to the desorption regeneration device 5 again.

[0048] The rotating frame 703 is rotatably installed with an inner hexagonal sleeve 7032, the inner hexagonal sleeve 7032 is fixed with the stirrer 704, the top end inner wall of the activated carbon adsorption tank 2 is rotatably installed with a driving shaft 8, the driving shaft 8 is driven to rotate by a first rotary motor 801, and the bottom end of the driving shaft 8 is fixedly installed with a prismatic bolt 802 corresponding to the inner hexagonal sleeve 7032;

[0049] When the inner hexagonal sleeve 7032 is provided with an excessively chamfered opening, the prismatic bolt 802 can also be inserted without obstruction in a slightly inclined state of the inner hexagonal sleeve 7032, when the upper net partition 7 moves to the highest position, the prismatic bolt 802 is inserted in the inner hexagonal sleeve 7032, and the stirrer 704 can be driven to rotate and stir by the first rotary motor 801.

[0050] Embodiment 3

[0051] With reference to Figures 1-12 The difference between this embodiment and embodiment 1 is that the top end of the desorption regeneration device 5 is provided with an activated carbon adding port 501 and a hot air inlet pipe 505, the bottom end of the desorption regeneration device 5 is provided with a gas discharge port 502, and a stirring shaft 504 is rotatably installed in the desorption regeneration device 5, and a plurality of groups of stirring blades 511 are equidistantly distributed on the stirring shaft 504.

[0052] The activated carbon adding port 501 is used to add deactivated activated carbon particles 207, the stirring shaft 504 rotates under the drive of the motor, and the stirring blades 511 are driven to stir the activated carbon in the tank at a low speed, thereby improving the looseness of the activated carbon, improving the contact rate between the activated carbon and the hot air, and improving the regeneration efficiency.

[0053] The top end of the stirring shaft 504 extends to the outside of the desorption regeneration device 5 and is connected with the hot air inlet pipe 505 through a rotary joint, the stirring shaft 504 and the stirring blades 511 are hollow and communicate with each other, a plurality of air injection ports 513 are arranged on the stirring blades 511, the hot air inlet pipe 505 is used to deliver hot air into the stirring shaft 504, the air passes through the internal channels of the stirring shaft 504 and the stirring blades 511, and is injected from the air injection ports 513 to be directly dispersed into the activated carbon particles 207, thereby further improving the regeneration efficiency.

[0054] The air injection ports 513 are equidistantly distributed on the stirring blades 511, and a scraper 512 is fixed on the stirring blades 511, the scraper 512 is in contact with the inner wall of the desorption regeneration device 5, a second rotary motor 508 is fixed at the top end of the desorption regeneration device 5, a belt pulley 509 is fixed on the outside of the stirring shaft 504, a belt 510 is sleeved between the outer sides of the two belt pulleys 509, an observation window 503 is arranged on the outside of the desorption regeneration device 5, the observation window 503 is rectangular, and a transparent glass is arranged in the observation window 503, a flow meter 507 is arranged on the hot air inlet pipe 505, and a backwashing branch 506 is connected to the hot air inlet pipe 505;

[0055] The second rotary motor 508 drives the stirring shaft 504 to rotate through the belt 510, and this transmission mode has the advantages of stable transmission and low noise, and can provide stable power output for the stirring shaft 504, in the stirring process, the scraper 512 scrapes off the activated carbon particles 207 remaining on the tank wall to prevent incomplete discharge of the activated carbon, and through the observation window 503, the staff can observe the regeneration condition of the activated carbon in the tank in real time;

[0056] The flow of hot air can be accurately measured by the flow meter 507, so that the flow of hot air can be accurately controlled according to actual processing requirements, and the cleaning liquid can be introduced into the hot air introduction pipe 505 through the backwashing branch 506, the hot air introduction pipe 505 is backwashed, the cleaning liquid is sprayed from the air outlet 513, so that the inner wall of the desorption regeneration device 5 can be washed, and the cleaning efficiency and cleaning effect are improved.

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like 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 application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0058] In the present application, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixation" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0059] The control mode of the present application is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of those skilled in the art, the power supply also belongs to the common knowledge in the art, and the present application is mainly used to protect mechanical devices, so the control mode and circuit connection of the present application will not be explained in detail.

[0060] The above is only a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A cigarette package printing plant active carbon waste gas treatment system, comprising a waste gas collecting device (1), a pretreatment device (3), an active carbon adsorption tank (2), a catalytic combustion device (4) and a desorption regeneration device (5), characterized in that: The bottom end of the activated carbon adsorption tank (2) is provided with an air inlet discharge port (201), the top end of the activated carbon adsorption tank (2) is provided with an air outlet (202), one side of the activated carbon adsorption tank (2) is provided with a manhole (203), the inside of the activated carbon adsorption tank (2) is respectively provided with an upper net partition (7) and a lower net partition (204), the activated carbon particles (207) are arranged between the upper net partition (7) and the lower net partition (204), the top end inner wall of the activated carbon adsorption tank (2) is provided with a lifting driving mechanism, and the output end of the lifting driving mechanism is fixed with the upper net partition (7); The lifting driving mechanism comprises a hydraulic cylinder (702) fixed on the top end inner wall of the activated carbon adsorption tank (2), and the top end of the upper net partition (7) is fixed with a transmission box (701), and the output shaft of the hydraulic cylinder (702) is fixed with the top end of the transmission box (701); One end of the upper net partition (7) is rotatably installed with a rotating frame (703) in the inside of a receiving opening (705), and the rotating frame (703) is rotatably installed with a stirrer (704); The transmission box (701) is fixedly provided with an elastic telescopic rod (7011), the top end of the elastic telescopic rod (7011) is fixedly provided with a connecting bracket (7013), the bottom end of the connecting bracket (7013) is fixedly provided with a vertical rack (7014), the top end of the upper net partition (7) is rotatably provided with a horizontal transmission shaft (7015), both ends of the horizontal transmission shaft (7015) are fixedly provided with first gears (7016), the rotating frame (703) is fixedly provided with a second gear (7031), one of the first gears (7016) is engaged with the vertical rack (7014), and the other first gear (7016) is engaged with the second gear (7031); The top end of the connecting bracket (7013) is fixedly provided with a lifting rod (7012), the top end of the connecting bracket (7013) is movably extended to the outside of the transmission box (701), the fixed part of the hydraulic cylinder (702) is provided with a baffle (7021), and the position of the baffle (7021) corresponds to the lifting rod (7012); The rotating frame (703) is rotatably provided with an internal hexagonal sleeve (7032), the internal hexagonal sleeve (7032) is fixed with the stirrer (704), the top end inner wall of the activated carbon adsorption tank (2) is rotatably provided with a driving shaft (8), the driving shaft (8) is driven to rotate through a first rotary motor (801), and the bottom end of the driving shaft (8) is fixedly provided with a prismatic bolt (802) corresponding to the internal hexagonal sleeve (7032).

2. A cigarette pack printing plant activated carbon exhaust gas treatment system according to claim 1, characterized in that: The inside of the activated carbon adsorption tank (2) is provided with a distributor (206) corresponding to the position of the air inlet discharge port (201), a plurality of distribution pipes (2061) are arranged around the distributor (206), and a plurality of air outlet holes (2062) are equidistantly arranged at the top end of the distribution pipe (2061).

3. A system for treating waste gases from a cigarette pack printing plant with activated carbon according to claim 1, characterized in that: The top end of the desorption regeneration device (5) is provided with an activated carbon adding port (501) and a hot air inlet pipe (505), the bottom end of the desorption regeneration device (5) is provided with an air outlet (502), a stirring shaft (504) is rotatably installed in the desorption regeneration device (5), and a plurality of groups of stirring blades (511) are equidistantly distributed on the stirring shaft (504).

4. A cigarette pack printing plant activated carbon exhaust gas treatment system according to claim 3, characterized in that: The top end of the stirring shaft (504) extends to the outside of the desorption regeneration device (5) and is connected with the hot air inlet pipe (505) through a rotary joint, the stirring shaft (504) and the stirring blades (511) are hollow and communicate with each other, a plurality of air injection ports (513) are arranged on the stirring blades (511).

5. A cigarette pack printing plant activated carbon exhaust gas treatment system according to claim 4, characterized in that: The air injection ports (513) are equidistantly distributed on the stirring blades (511), and a scraper (512) is fixed on the stirring blades (511), the scraper (512) is in contact with the inner wall of the desorption regeneration device (5), a second rotary motor (508) is fixed at the top end of the desorption regeneration device (5), a belt pulley (509) is fixed at the outside of the stirring shaft (504) and the output shaft of the second rotary motor (508), a belt (510) is sleeved between the outer sides of the two belt pulleys (509), an observation window (503) is arranged on the outside of the desorption regeneration device (5), the observation window (503) is rectangular, and transparent glass is arranged in the observation window (503), a flow meter (507) is arranged on the hot air inlet pipe (505), and a backwashing branch (506) is connected to the hot air inlet pipe (505).

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