Waste gas treatment system for cigarette package gravure

Abstract

The waste gas treatment system comprises a waste gas inlet pipe, a suction fan is installed at one end of the waste gas inlet pipe, a conveying pipe is installed at the end, away from the waste gas inlet pipe, of the suction fan, a heat storage chamber is installed at the end, away from the suction fan, of the conveying pipe, and a combustion chamber is installed at the top end of the heat storage chamber; a gas outlet pipe is installed at one end of the combustion chamber, a waste heat storage mechanism is installed at the end, away from the combustion chamber, of the gas outlet pipe, and the waste heat storage mechanism is used for storing heat of heated waste gas; the waste gas inlet pipe communicates with a collecting shell, the inner wall of the waste gas inlet pipe is rotationally connected with a rotating rod, and the waste gas treatment device further comprises a blockage clearing assembly, a collecting assembly and a purifying assembly. By arranging the waste heat storage mechanism, waste heat of waste gas is recycled, heat in the waste gas is converted into steam, meanwhile, a waste heat storage system is established according to the generated steam, and waste heat is reasonably distributed.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a waste gas treatment system for gravure printing of cigarette packages. Background Art

[0002] In modern industrial production, especially in the gravure printing industry for cigarette packaging, waste gas treatment has become a crucial link. With the increasing global awareness of environmental protection, how to efficiently and environmentally friendly treat waste gas generated during production has become a major challenge facing many companies.

[0003] Regarding current exhaust gas treatment systems, patent publication number "CN106237840B" discloses a combustion exhaust gas treatment system. This system first passes dust-laden gas through a filter device to further filter dust, and then enters a combustion chamber through a pipe. Within the combustion chamber, oxygen is introduced from an oxygen chamber to fully combust the gas again, converting some nitrogen oxides and carbon monoxide into nitrogen dioxide and carbon dioxide. Next, after passing through the oxidation device, the gas enters a cooling chamber for cooling. Once the temperature drops to a set temperature, it enters a catalytic chamber. Within the catalytic chamber, ammonia is introduced through an ammonia chamber. Nitrogen dioxide and remaining nitrogen oxides in the exhaust gas react with ammonia over a corrugated plate catalyst to produce nitrogen and water. However, this exhaust gas treatment method requires a continuous input of a large amount of energy to maintain the temperature, pressure, and other conditions required for combustion of the exhaust gas in the combustion chamber. Furthermore, the heat released during the combustion process cannot be efficiently recovered and distributed, and is not fully and effectively utilized, resulting in a large amount of heat energy being wasted, greatly exacerbating energy waste.

[0004] Based on this, the present application proposes an exhaust gas treatment system for gravure printing of cigarette packaging. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an exhaust gas treatment system for gravure printing of cigarette packaging.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An exhaust gas treatment system for gravure printing of cigarette packaging comprises an exhaust gas intake pipe, a suction fan is installed at one end of the exhaust gas intake pipe, a delivery pipe is installed at the end of the suction fan away from the exhaust gas intake pipe, a heat storage chamber is installed at the end of the delivery pipe away from the suction fan, a combustion chamber is installed at the top of the heat storage chamber, an exhaust pipe is installed at one end of the combustion chamber, a waste heat storage mechanism is installed at the end of the exhaust pipe away from the combustion chamber, and the waste heat storage mechanism is used to store heat of the heated exhaust gas; the exhaust gas intake pipe is connected to a collecting shell, and the inner wall of the exhaust gas intake pipe is rotatably connected to a rotating rod;

[0008] Also includes:

[0009] A clearing assembly, which is used to clean and unclog impurities in the exhaust gas intake pipe;

[0010] A collecting assembly, the collecting assembly being used to collect impurities from the exhaust gas intake pipe;

[0011] A purification component is used to purify the filtered exhaust gas.

[0012] Preferably, the blockage clearing assembly comprises:

[0013] an arc-shaped pipe, the arc-shaped pipe being symmetrically connected to the exhaust gas intake pipe;

[0014] A three-way ball valve installed at the junction of the arc pipe and the exhaust gas intake pipe;

[0015] A filter plate, wherein the filter plate is installed on the inner wall of the arc tube;

[0016] an air supply pipe connected to the arc-shaped pipe;

[0017] A nozzle, the nozzle being mounted at the end of the air supply pipe and disposed within the arc-shaped tube;

[0018] A gas storage chamber, the gas storage chamber being installed at one end of the gas supply pipe away from the arc pipe;

[0019] An air intake pipe is installed on the gas storage chamber and communicates with the gas storage chamber.

[0020] Preferably, the waste heat storage mechanism comprises:

[0021] a heat exchanger, the heat exchanger being mounted at an end of the exhaust pipe away from the combustion chamber;

[0022] A heat transfer oil pipeline, wherein the heat transfer oil pipeline is installed on the heat exchanger;

[0023] The steam boiler room is installed at one end of the thermal oil pipeline away from the heat exchanger.

[0024] Preferably, a purified gas exhaust pipe is installed at the end of the heat exchanger, an exhaust fan is installed at the end of the purified gas exhaust pipe away from the heat exchanger, an exhaust pipe is installed at the end of the exhaust fan away from the purified gas exhaust pipe, and a chimney is installed at the end of the exhaust pipe away from the exhaust fan.

[0025] Preferably, there are three heat storage chambers, a connecting pipe is installed at the bottom of each heat storage chamber, each connecting pipe is connected to each other, and a lifting valve is installed inside the connecting pipe.

[0026] Preferably, a pulse valve is installed in the air supply pipe, and a solenoid valve is installed in the air intake pipe.

[0027] Preferably, the collecting component cooperates with the elastic component through the moving part, and uses the impact force of the blocking component to push the filter plate to slide, thereby expanding the impurity collection channel and realizing automatic collection and resetting of impurities.

[0028] Preferably, the purification component comprises an intermittent rotating part and an adsorption part. The intermittent rotating part is driven by the exhaust gas flowing after filtering, and drives the filter part to purify and adsorb the exhaust gas.

[0029] The present invention has the following beneficial effects:

[0030] 1. Through the waste heat storage mechanism, the waste heat of the exhaust gas is recovered and utilized, and the heat in the exhaust gas is converted into steam. At the same time, a waste heat storage system is established based on the generated steam, and the waste heat is reasonably distributed according to the different heat requirements of different production links.

[0031] 2. By establishing a close communication mechanism between production equipment and the waste heat recovery system, the production equipment sends signals to the waste heat recovery system according to its own heat energy demand. The waste heat recovery system adjusts its operating parameters accordingly in real time. When the equipment requires a higher temperature drying heat source, the waste heat recovery system prioritizes the delivery of high-temperature waste heat to this link, achieving accurate supply of waste heat and reducing heat transmission loss.

[0032] 3. Through pulsed gas injection and suction cycle, it can effectively clean impurities in the exhaust gas intake pipe and prevent pipe blockage; and simultaneously drive the collection component to use springs and wedge structures to achieve automatic collection and reset of impurities, improve impurity collection efficiency, and reduce manual maintenance costs.

[0033] 4. Through the cooperation of the impeller, convex rod, special-shaped cam and activated carbon plate, the activated carbon plate rotates intermittently, prolonging the contact time between the exhaust gas and the activated carbon plate, achieving deep purification of the exhaust gas and improving the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of a waste gas treatment system for gravure printing of cigarette packaging proposed by the present invention;

[0035] Figure 2 This is a schematic side view of the overall structure of an exhaust gas treatment system for gravure printing of cigarette packaging proposed by the present invention;

[0036] Figure 3 This is a schematic diagram of the connection structure between the clearing assembly and the exhaust gas intake pipe in the present invention;

[0037] Figure 4 Schematic diagram of the cross-sectional structure of the exhaust gas intake pipe in the present invention;

[0038] Figure 5 This is a schematic diagram of the connection structure between the collection component and the exhaust gas intake pipe in the present invention;

[0039] Figure 6 It is a structural diagram of the collection component in the present invention;

[0040] Figure 7 A schematic diagram of the structure of a collecting assembly and one of the filter plates in the present invention;

[0041] Figure 8 This is a schematic diagram of the connection structure between the exhaust gas intake pipe and the purification component in the present invention;

[0042] Figure 9 It is a structural schematic diagram of the purification component in the present invention.

[0043] In the figure: 1 exhaust gas inlet pipe, 101 arc pipe, 102 three-way ball valve, 103 filter plate, 104 air supply pipe, 105 nozzle, 106 gas storage chamber, 107 suction pipe, 2 suction fan, 3 delivery pipe, 4 heat storage chamber, 5 connecting pipe, 6 combustion chamber, 7 outlet pipe, 8 heat exchanger, 9 thermal oil pipeline, 10 steam boiler room, 11 purified gas discharge pipe, 12 exhaust fan, 13 exhaust pipe, 14 chimney, 15 collecting shell, 151 hollow plate, 152 first spring, 153 support frame, 154 wedge block, 155 hollow cylinder, 156 fan-shaped collecting cylinder, 157 wedge rod, 158 second spring, 159 mounting plate, 1510 third spring, 16 rotating rod, 161 impeller, 162 protruding rod, 163 activated carbon plate, 164 special-shaped cam. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] Example 1: Reference Figure 1-9, an exhaust gas treatment system for gravure printing of cigarette packaging, comprising an exhaust gas intake pipe 1, a blockage removal component, a collection component and a purification component. A suction fan 2 is installed at one end of the exhaust gas intake pipe 1, a delivery pipe 3 is installed at the end of the suction fan 2 away from the exhaust gas intake pipe 1, and a heat storage chamber 4 is installed at the end of the delivery pipe 3 away from the suction fan 2. There are three heat storage chambers 4, each of which is equipped with a connecting pipe 5 at the bottom of each heat storage chamber 4, each connecting pipe 5 is connected, and a poppet valve is installed inside the connecting pipe 5. The heat storage chamber 4 is filled with a ceramic heat storage body, which has good heat storage performance and can absorb and store heat during the operation of the system. In the heat storage stage, the high-temperature purified gas is discharged from the combustion chamber 6 and enters one of the heat storage chambers 4, and is connected to the ceramic storage chamber The heat body is fully in contact with the heat body, and a large amount of heat carried by the purified gas is absorbed by the ceramic heat storage body. The temperature of the ceramic heat storage body rises rapidly, thereby realizing heat storage. In the heat release stage, the low-temperature exhaust gas to be treated enters the heat storage chamber 4 that has completed heat storage. The low-temperature exhaust gas exchanges heat with the high-temperature ceramic heat storage body. The exhaust gas absorbs the heat released by the ceramic heat storage body and the temperature rises rapidly, which provides favorable conditions for the subsequent oxidation decomposition in the combustion chamber 6. When switching the working state of the heat storage chamber 4, a cleaning stage will be carried out. Taking the three-chamber heat storage incinerator as an example, the return air cleaning pipeline is used to purge the heat storage chamber 4 that has just completed heat release to remove the residual exhaust gas and impurities to prevent them from entering the next cycle, thereby ensuring the system treatment effect and operation stability.

[0046] A combustion chamber 6 is installed at the top of the heat storage chamber 4, an outlet pipe 7 is installed at one end of the combustion chamber 6, and a waste heat storage mechanism is installed at the end of the outlet pipe 7 away from the combustion chamber 6. The waste heat storage mechanism is used to store the heat of the heated exhaust gas. The exhaust gas inlet pipe 1 is connected to a collection shell 15, and the inner wall of the exhaust gas inlet pipe 1 is rotatably connected to a rotating rod 16;

[0047] A purified gas exhaust pipe 11 is installed at the end of the heat exchanger 8, an exhaust fan 12 is installed at the end of the purified gas exhaust pipe 11 away from the heat exchanger 8, an exhaust pipe 13 is installed at the end of the exhaust fan 12 away from the purified gas exhaust pipe 11, and a chimney 14 is installed at the end of the exhaust pipe 13 away from the exhaust fan 12.

[0048] In this embodiment, when the exhaust gas treatment system is running, the clearing component first cleans the exhaust gas inlet pipe 1 to ensure it is unobstructed, and then the suction fan 2 starts working, generating a strong suction force to suck the exhaust gas in the cigarette packaging gravure printing workshop from the exhaust gas inlet pipe 1. Under the action of the suction fan 2, the exhaust gas is transported to the heat storage chamber 4 along the conveying pipe 3; when the exhaust gas enters the heat storage chamber 4, the low-temperature exhaust gas is fully in contact with the high-temperature ceramic heat storage body, and heat exchange occurs. During the heat exchange process, the exhaust gas quickly absorbs the heat released by the ceramic heat storage body, and the temperature rises significantly. The lifting valve in the connecting pipe 5 at the bottom of the heat storage chamber 4 accurately controls the flow direction of the exhaust gas according to the preset program. The opening and closing of the poppet valve ensures that the exhaust gas can flow in an orderly manner between each heat storage chamber 4, so that the exhaust gas can fully absorb heat and achieve the best preheating effect. The fully preheated exhaust gas enters the combustion chamber 6 and is heated to above 760°C by burners and other devices. Under high temperature conditions, VOCs (VOCs are volatile organic compounds) in the exhaust gas undergo oxidative decomposition reactions. VOCs fully react with oxygen under high temperature and are eventually converted into harmless substances such as carbon dioxide and water.

[0049] The high-temperature gases produced by oxidative decomposition are discharged from combustion chamber 6 through exhaust pipe 7 and enter the waste heat storage mechanism. Inside heat exchanger 8, the high-temperature gases efficiently exchange heat with the thermal oil in thermal oil pipeline 9. The heat from the high-temperature gases is continuously transferred to the thermal oil, causing the oil temperature to rise while the thermal oil temperature itself gradually decreases. The heated thermal oil flows along thermal oil pipeline 9 and is transported to steam boiler room 10. There, the thermal oil transfers the large amount of heat it carries to water in the boiler. As the water absorbs the heat, its temperature rises and it gradually converts into steam. This steam can be transported to other parts of the production process that require thermal energy, thus recycling the waste heat from the exhaust gas and improving energy efficiency.

[0050] The purified gas cooled by the heat exchanger 8 enters the exhaust fan 12 through the purified gas discharge pipe 11. The exhaust fan 12 provides power for the discharge of the purified gas, pushing the purified gas through the exhaust pipe 13 and finally discharged into the atmosphere through the chimney 14.

[0051] Example 2: Different from Example 1, refer to Figure 1-2This embodiment also has the following further contents: the waste heat storage mechanism is used to store the heat of the heated exhaust gas, the waste heat storage mechanism includes a heat exchanger 8, a thermal oil pipeline 9 and a steam boiler room 10, the heat exchanger 8 is installed at the end of the outlet pipe 7 away from the combustion chamber 6; the thermal oil pipeline 9 is installed on the heat exchanger 8; the steam boiler room 10 is installed at the end of the thermal oil pipeline 9 away from the heat exchanger 8, and the waste heat storage mechanism is also provided with a waste heat recovery system, and a close communication mechanism is established with the production equipment. Various sensors are installed at key positions of the production equipment, and temperature sensors are used to monitor the real-time temperature of different positions of the equipment.

[0052] For example, in the drying area of printing equipment, a temperature sensor accurately determines the current drying temperature (currently displayed as 120°C). This temperature is compared in real time with the equipment's preset drying temperature range (100°C-130°C) to facilitate timely adjustments to the drying effect. A pressure sensor monitors the equipment's internal pressure, currently stable at 80 kilopascals (kPa), ensuring operation within a safe pressure range (70kPa-90kPa) to prevent problems such as ink splashing or paper deformation caused by abnormal air pressure. A flow sensor records the flow rates of media such as ink and steam. The current ink flow rate is 1.5 liters per minute (L / min) and the steam flow rate is 50 cubic meters per hour (m³ / h). This data can be used to understand the workload and thermal energy demand of the production equipment. A production process parameter sensor collects data closely related to the production process, such as printing speed and ink curing time. The current printing speed is 50 prints per minute (ipm), and the ink curing time is set to 30 seconds. This data provides strong support for precise control and quality assurance of the production process, and also facilitates the controller to adjust the operating parameters of related equipment such as the waste heat recovery system based on actual conditions.

[0053] At the same time, the waste heat recovery system itself is also equipped with corresponding sensors to monitor the operating parameters of key parts such as the heat exchanger, thermal oil pipeline and steam boiler room, and transmit this data to the controller. Currently, the exhaust gas inlet temperature of the heat exchanger is 300°C, the exhaust gas outlet temperature is 150°C, the thermal oil inlet temperature is 80°C, the thermal oil outlet temperature is 200°C, the thermal oil flow rate is 800 liters per hour (L / h), the thermal oil pressure in the thermal oil pipeline is stable at 1.2 megapascals (MPa), the pipeline wall temperature is 90°C, the steam temperature in the steam boiler room is 180°C, the steam pressure is 0.8 MPa, and the water level is 1.5 meters (m).

[0054] The controller receives a large amount of data from production equipment and waste heat recovery systems, and analyzes and processes it through pre-set logical judgment rules and algorithms. The controller uses the following formula:

[0055]

[0056] in Indicates the heat demand of production equipment. It is the preset upper temperature limit of the drying area of the printing equipment (130℃). is the current drying area temperature (120°C), is the ink flow rate ( ), Is the printing speed , 、 、 is the weight coefficient, which is set according to the importance of each factor in affecting the calorie demand, and , assuming 、 、 Then we can calculate:

[0057]

[0058] For the heat that the waste heat recovery system can provide, according to the parameters of the heat exchanger, use the formula:

[0059]

[0060] The heat transfer oil flow (initial , adjustable), specific heat capacity , inlet temperature (80℃), outlet temperature (200℃), is the density of thermal oil, Represents the flow rate of thermal oil.

[0061] When deciding how to adjust the heat exchanger valve opening, the controller uses the formula:

[0062]

[0063] in is the adjustment amount of the valve opening, is the proportional coefficient set according to the system characteristics. When, according to the calculated To adjust the valve opening in the heat exchanger, thereby changing the flow of thermal oil, it is known that , when calculated (Assumption value), The valve opening is then controlled based on this adjustment amount, increasing the thermal oil flow rate from 800 liters per hour to 900 liters per hour (the specific increase is related to the valve characteristics and adjustment amount).

[0064] In addition, the steam generation , and the heat transferred through the heat exchanger (i.e. ) is related, through the formula:

[0065]

[0066] in is the latent heat of vaporization of steam (known).

[0067] Given that the current temperature in the drying area of the printing equipment is 120°C, slightly below the ideal upper limit, and that the ink flow rate is 1.5 liters per minute and the printing speed is 50 prints per minute, the above formula comprehensively determines that the production equipment has room for improvement in heat demand. The controller also generates corresponding control instructions based on the operating status of the waste heat recovery system, such as the thermal oil flow rate in the heat exchanger and the steam pressure in the steam boiler room. If the production equipment determines that it needs more heat, the controller adjusts the valve opening in the heat exchanger, appropriately increasing the thermal oil flow rate from 800 liters per hour to 900 liters per hour, thereby improving heat exchange efficiency and outputting more steam. Conversely, when the production equipment's heat demand decreases, the controller reduces the thermal oil flow rate, reducing steam generation. This intelligent control and regulation achieves close coordination between the waste heat recovery system and the production equipment, ensuring that waste heat precisely meets the production equipment's needs and improving energy efficiency.

[0068] In this embodiment, when the high-temperature exhaust gas discharged from the combustion chamber 6 enters the heat exchanger 8 in the waste heat storage mechanism through the exhaust pipe 7, the high-temperature exhaust gas and the thermal oil are fully heat-exchanged without mixing with each other. The high-temperature exhaust gas transfers its own heat to the thermal oil, and its own temperature is significantly reduced, while the thermal oil absorbs heat and its temperature is greatly increased. This process realizes the preliminary recovery of the waste heat of the exhaust gas. The heated thermal oil is transported to the steam boiler room 10 through the thermal oil pipeline 9. In the steam boiler room 10, the high-temperature thermal oil exchanges heat with water, transfers heat to the water in the boiler, causes the water to heat up and eventually converts into steam, which can be used for heating, drying and other links in the production process, thereby realizing further recovery and effective utilization of waste heat. After the heat transfer is completed, the temperature of the thermal oil is reduced, and it flows back to the heat exchanger 8 through a specific pipeline, ready to absorb the heat of the high-temperature exhaust gas again, forming a closed circulation system.

[0069] Example 3: Reference Figure 3-9Compared with the first and second embodiments, the blockage clearing assembly in this embodiment is used to clean and clear impurities in the exhaust gas intake pipe 1. The blockage clearing assembly includes an arc pipe 101, a three-way ball valve 102, a filter plate 103, an air supply pipe 104, a nozzle 105, a gas storage chamber 106 and an air intake pipe 107. The arc pipe 101 is symmetrically connected to the exhaust gas intake pipe 1. The three-way ball valve 102 is installed at the intersection of the arc pipe 101 and the exhaust gas intake pipe 1. The three-way ball valve 102 has three ports. The three channels are connected by a ball valve core and a spherical valve core. By rotating the spherical valve core, different connection modes between the three channels can be achieved. During the normal exhaust gas transportation process, the three-way ball valve 102 is in a specific connection state, so that the exhaust gas can smoothly pass through the arc pipe 101 into the exhaust gas intake pipe 1. When a blockage clearing operation is required, the ball valve core is rotated to close the channel between the exhaust gas intake pipe 1 and the arc pipe 101, preventing the exhaust gas from entering the arc pipe 101, creating a safe environment for the blockage clearing work.

[0070] The filter plates 103 are evenly installed on the inner wall of the arc tube 101, and the air supply pipe 104 is connected to the arc tube 101. A pulse valve is installed in the air supply pipe 104. The pulse valve is used to control the injection of gas. It can be opened and closed periodically according to the set program, so that the high-pressure gas in the gas storage chamber 106 is injected into the arc tube 101 through the air supply pipe 104 in the form of pulses, thereby enhancing the flushing effect of impurities on the tube wall and the filter plate 103.

[0071] An electromagnetic valve is installed in the intake pipe 107; by controlling the switch of the electromagnetic valve, the filtered air is stored in the gas storage chamber 106 through the intake pipe 107, and then the gas in the gas storage chamber 106 is transported to the nozzle 105 through the air supply pipe 104 to clear the arc tube 101 and the filter plate 103.

[0072] The nozzle 105 is installed at the end of the air supply pipe 104, and the nozzle 105 is arranged in the arc tube 101; the gas storage chamber 106 is installed at one end of the air supply pipe 104 away from the arc tube 101; the intake pipe 107 is installed on the gas storage chamber 106, and the intake pipe 107 is communicated with the gas storage chamber 106.

[0073] The following structural design can be adopted for the moving parts and elastic parts in the collection assembly:

[0074] The collecting assembly is used to collect impurities in the exhaust gas intake pipe. The moving parts and elastic parts in the collecting assembly include a hollow plate 151, a first spring 152, a support frame 153, a wedge block 154, a hollow cylinder 155, a fan-shaped collecting cylinder 156, a wedge rod 157, a second spring 158, a mounting plate 159, and a third spring 1510. The hollow plate 151 is symmetrically fixedly connected to the inner wall of the collecting shell 15, the first spring 152 is fixedly connected to the inner side wall of the hollow plate 151, the support frame 153 is fixedly connected to the end of the first spring 152 away from the hollow plate 151, and the support frame 153 is slidably connected to the hollow plate 151. It should be noted that the opening structure on both sides of the hollow plate 151 plays a guiding and limiting role in the sliding of the support frame 153, so that the support frame 153 can only slide back and forth along the preset track inside the hollow plate 151 under the elastic force of the first spring 152, effectively avoiding the risk of sliding out.

[0075] The wedge block 154 is fixedly connected to the top surface of the support frame 153, the hollow cylinder 155 is fixedly connected to the inner wall of the support frame 153 through a short axis, and the fan-shaped collecting cylinder 156 is connected to the side end of the hollow cylinder 155. The fan-shaped collecting cylinder 156 adopts a hollow cavity structure design. When dust enters the fan-shaped collecting cylinder 156 through the hollow cylinder 155, it naturally settles into the inner cavity of the cylinder under the action of gravity, thereby realizing efficient dust collection.

[0076] The wedge rod 157 is fixedly connected to the filter plate near the collecting shell 15, the second spring 158 is fixedly connected to the side wall of the wedge rod 157, the second spring 158 is fixedly connected to the collecting shell 15, the mounting plate 159 is fixedly connected to the inner wall of the exhaust pipe, the third spring 1510 is fixedly connected to the side wall of the mounting plate 159, and the third spring 1510 is fixedly connected to the filter plate near the collecting shell 15.

[0077] The following structures can be designed for the intermittent rotating parts and adsorption parts in the purification component:

[0078] The purification component is used to purify the filtered exhaust gas. The intermittent rotating part and the adsorption part include an impeller 161, a protruding rod 162, an activated carbon plate 163 and a special-shaped cam 164. The impeller 161 is fixedly connected to the rotating rod 16, the protruding rod 162 is fixedly connected to the side wall of the impeller 161, the activated carbon plate 163 is rotatably connected to the rotating rod 16, the special-shaped cam 164 is fixedly connected to the side wall of the activated carbon plate 163, and the special-shaped cam 164 is rotatably connected to the rotating rod 16. A plurality of through grooves are symmetrically provided on the special-shaped cam 164, and the diameter of the through groove is larger than the diameter of the protruding rod 162, so that the protruding rod 162 can be smoothly embedded in the through groove during the rotation of the impeller 161. The gap space formed by the diameter difference not only ensures the effective pushing effect of the protruding rod 162 on the special-shaped cam 164, but also avoids the risk of jamming caused by interference between the two, thereby ensuring the stability and reliability of the transmission process.

[0079] In this embodiment, when it is necessary to clean the filter plate 103 in the arc tube 101, the three-way ball valve 102 at the position corresponding to the arc tube 101 on the exhaust gas inlet pipe 1 is closed to temporarily prevent the exhaust gas from flowing through the arc tube 101; at this time, the gas stored in advance in the gas storage chamber 106 is ejected from the nozzle 105 at high speed through the air supply pipe 104 after the pulse valve is opened, impacting the impurities on the inner wall of the arc tube 101 and blowing off the impurities on the filter plate 103. The filter plate close to the collection shell 15 will be forced to move forward when the strong airflow is ejected, and will drive the wedge rod 157 to move forward. The top of the wedge rod 157 contacts the wedge block 154, and the wedge block 154 is forced to press the first spring 152 downward, thereby Drive the support frame 153 downward, and drive the hollow cylinder 155 downward to the exhaust gas intake pipe, and the dust and impurities blown off the filter plate enter the fan-shaped collection cylinder 156 through the hollow cylinder 155 for collection and storage. When the cleaning is completed, the filter plate is reset under the action of the second spring 158 and the third spring 1510, so that the wedge rod 157 is disengaged from the wedge block 154. Under the action of the first spring 152, the hollow cylinder 155 is driven to reset to the inside of the collection shell 15 for the next cleaning and collection. After cleaning, close the pulse valve and the solenoid valve, reopen the three-way ball valve 102, and restore the exhaust gas intake pipe 1 to normal operation. The above operation can be repeated as needed during system operation to ensure the smooth flow of the exhaust gas intake pipe 1.

[0080] As the multi-layer filter plates complete filtering of the exhaust gas, the driving force generated by the flow of exhaust gas in the exhaust gas inlet pipe will drive the impeller 161 to rotate, and drive the protruding rod 162 on the side wall. As the impeller 161 rotates, it will continue to form contact and linkage with the through groove on the surface of the special-shaped cam 164, thereby pushing the special-shaped cam 164 to rotate, causing the activated carbon plate 163 to rotate around the rotating rod 16, thereby realizing the purification and adsorption function of the filtered exhaust gas.

[0081] When protruding rod 162 engages the slot of shaped cam 164, shaped cam 164 rotates half a turn due to the thrust. When protruding rod 162 loses contact with the slot, shaped cam 164 immediately stops rotating, simultaneously causing activated carbon plate 163 to stop rotating. This periodic contact transmission between protruding rod 162 and shaped cam 164 allows activated carbon plate 163 to intermittently rotate and dynamically match the exhaust gas flow, significantly improving the purification and adsorption efficiency of filtered exhaust gas.

[0082] At the same time, the electromagnetic valve in the air intake pipe 107 is opened, and the purified exhaust gas is collected through the air intake pipe 107 and stored in the gas storage chamber 106 for next use.

[0083] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An exhaust gas treatment system for gravure printing of cigarette packaging, comprising an exhaust gas inlet pipe (1), characterized in that: A suction fan (2) is installed at one end of the exhaust gas intake pipe (1), a delivery pipe (3) is installed at one end of the suction fan (2) away from the exhaust gas intake pipe (1), a heat storage chamber (4) is installed at one end of the delivery pipe (3) away from the suction fan (2), a combustion chamber (6) is installed at the top of the heat storage chamber (4), an outlet pipe (7) is installed at one end of the combustion chamber (6), and a waste heat storage mechanism is installed at one end of the outlet pipe (7) away from the combustion chamber (6), and the waste heat storage mechanism is used to store the heat of the heated exhaust gas; the exhaust gas intake pipe (1) is connected to a collecting shell (15), and the inner wall of the exhaust gas intake pipe (1) is rotatably connected to a rotating rod (16); Also includes: A clearing assembly, the clearing assembly being used to clear and unclog impurities in the exhaust gas intake pipe (1); A collecting component, the collecting component is used to collect impurities from the exhaust gas intake pipe (1); A purification component is used to purify the filtered exhaust gas.

2. The waste gas treatment system for gravure printing of cigarette packaging according to claim 1, characterized in that: The blockage clearing component comprises: An arc-shaped pipe (101), the arc-shaped pipe (101) being symmetrically connected to the exhaust gas intake pipe (1); A three-way ball valve (102), the three-way ball valve (102) being installed at the junction of the arc-shaped pipe (101) and the exhaust gas intake pipe (1); Filter plates (103), the filter plates (103) being evenly mounted on the inner wall of the arc-shaped tube (101); An air supply pipe (104), the air supply pipe (104) being connected to the arc-shaped pipe (101); A nozzle (105), the nozzle (105) being installed at the end of the air supply pipe (104), and the nozzle (105) being arranged in the arc-shaped pipe (101); A gas storage chamber (106), the gas storage chamber (106) being installed at one end of the gas supply pipe (104) away from the arc-shaped pipe (101); An air intake pipe (107), wherein the air intake pipe (107) is installed on the gas storage chamber (106), and the air intake pipe (107) is communicated with the gas storage chamber (106).

3. The waste gas treatment system for gravure printing of cigarette packaging according to claim 1, characterized in that: The waste heat storage mechanism comprises: a heat exchanger (8), the heat exchanger (8) being mounted at an end of the outlet pipe (7) away from the combustion chamber (6); A heat transfer oil pipeline (9), wherein the heat transfer oil pipeline (9) is installed on the heat exchanger (8); A steam boiler room (10) is installed at one end of the thermal oil pipeline (9) away from the heat exchanger (8).

4. The waste gas treatment system for gravure printing of cigarette packaging according to claim 3, characterized in that: A purified gas discharge pipe (11) is installed at the end of the heat exchanger (8), an exhaust fan (12) is installed at the end of the purified gas discharge pipe (11) away from the heat exchanger (8), an exhaust pipe (13) is installed at the end of the exhaust fan (12) away from the purified gas discharge pipe (11), and a chimney (14) is installed at the end of the exhaust pipe (13) away from the exhaust fan (12).

5. The waste gas treatment system for gravure printing of cigarette packaging according to claim 1, characterized in that: There are three heat storage chambers (4), and a connecting pipe (5) is installed at the bottom of each heat storage chamber (4). Each connecting pipe (5) is connected to each other, and a lifting valve is installed inside each connecting pipe (5).

6. The waste gas treatment system for gravure printing of cigarette packaging according to claim 2, characterized in that: A pulse valve is installed in the air supply pipe (104), and a solenoid valve is installed in the air intake pipe (107).

7. The waste gas treatment system for gravure printing of cigarette packaging according to claim 1, characterized in that: The collecting component cooperates with the elastic component through the moving part, and uses the impact force of the blocking component to push the filter plate to slide, thereby expanding the impurity collection channel and realizing automatic collection and reset of impurities.

8. The waste gas treatment system for gravure printing of cigarette packaging according to claim 1, characterized in that: The purification component is composed of an intermittent rotating part and an adsorption part. The intermittent rotating part is driven by the exhaust gas flowing after filtering, and drives the filter part to purify and adsorb the exhaust gas.

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