Air purification and adsorption device for photogravure press

Abstract

The invention relates to the technical field of air purification, and discloses an air purification adsorption device for a photogravure press, the air purification adsorption device comprises a waste gas treatment tank, the bottom end of the waste gas treatment tank is rotatably connected with a main shaft, and the circumferential surface of the main shaft is fixedly connected with an activated carbon filter plate; an inorganic filtering device for filtering inorganic particles is arranged in the waste gas treatment tank, and an organic desorption device for heating, desorbing and recycling organic matters is arranged on the outer side of the waste gas treatment tank. The activated carbon filter plate rotates to increase the contact area with the desorption agent, so that the desorption effect is improved, the desorption agent in the scattering cavity is intermittently scattered, the situation that the desorption agent cannot be uniformly and comprehensively scattered on the activated carbon filter plate due to the fact that the desorption agent is quickly scattered is prevented, and the desorption efficiency is improved after the activated carbon filter plate is in uniform contact with the desorption agent.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and particularly to an air purification adsorption device for an intaglio printing press. Background Art

[0002] In industrial production, the use of ink is widespread in industries such as printing, packaging, and painting. However, a large amount of waste gas containing volatile organic compounds will be generated during its production and use. These organic compounds not only pollute the environment but may also pose a hazard to human health. Traditional waste gas treatment methods include adsorption, absorption, condensation, and combustion methods, etc. Among them, the activated carbon adsorption method is widely used because of its high efficiency, simple operation, and low cost. In the prior art, it is difficult to efficiently and quickly restore the adsorption performance of activated carbon, which affects the further improvement of air purification efficiency.

[0003] The patent with the publication number CN215276212U discloses an industrial air purification device with activated carbon adsorption. The patent includes a device body, a filter chamber is arranged inside the device body, a limiting mechanism and a filter screen are arranged inside the filter chamber. There are several filter screens, and a total of four limiting mechanisms are arranged. Springs can drive the limiting blocks on the four outer walls of the filter chamber to squeeze and limit the filter screen, so that the purification device can be adjusted and limited within a certain range according to the sizes of different filter screens, effectively improving the applicability of the purification device. The rotating pin can also be pulled and rotated, so that the rotating pin extends and rotates through the spring and the connecting block. When stretched to an appropriate position, the spring drives the rotating pin to pull back, so that the rotating pin can be adjusted and limited within a certain range according to the number and different thicknesses of the filter screens, which can further improve the applicability of the purification device. Although this patent solves the above problems, there is still the problem that it is difficult to efficiently and quickly restore the adsorption performance of activated carbon, which affects the further improvement of air purification efficiency. Therefore, an air purification adsorption device for an intaglio printing press is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an air purification adsorption device for an intaglio printing press in view of the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows: An air purification and adsorption device for a gravure printing machine, including an exhaust gas treatment tank. The bottom end of the exhaust gas treatment tank is rotatably connected to a main shaft. The circumferential surface of the main shaft is fixedly connected with an activated carbon filter plate. An inorganic filtration device for filtering inorganic particles is arranged inside the exhaust gas treatment tank. An organic desorption device for heating, desorbing and recycling organic substances is arranged outside the exhaust gas treatment tank. A feed pipe is arranged on the right side of the exhaust gas treatment tank. A stop valve is fixedly connected to the surface of the feed pipe. The right inner wall surface of the exhaust gas treatment tank is fixedly connected with a material spreading cavity. An active half-frame is slidably connected to the inner wall of the material spreading cavity. A lifting slide shaft is slidably connected to the bottom inner surface of the material spreading cavity. The top end of the lifting slide shaft is fixedly connected with a guiding block. The circumferential surface of the activated carbon filter plate is fixedly connected with a sliding ring. An inclined convex block is fixedly connected to the upper surface of the sliding ring. A partition plate is fixedly connected to the inner wall of the exhaust gas treatment tank. A through pipe is fixedly connected to the lower surface of the partition plate. The top end of the main shaft is fixedly connected with an extension plate. An air inlet pipe is fixedly connected to the top end of the exhaust gas treatment tank. A clean gas discharge valve is fixedly connected to the rear side surface of the bottom of the exhaust gas treatment tank. The stop valve is fixedly connected to the right side surface of the exhaust gas treatment tank. The upper surface of the lifting slide shaft and the inclined convex block are in contact with each other. The sliding ring is slidably connected to the inner wall of the exhaust gas treatment tank. The left inclined surface of the guiding block and the right inclined surface of the active half-frame are in contact with each other. An elastic telescopic rod I is arranged between the left side surface of the active half-frame and the inner wall of the material spreading cavity. The top end of the main shaft is rotatably connected to the inner surface of the partition plate. The bottom end of the main shaft is fixedly connected with a motor, and the motor is fixedly connected to the bottom end of the exhaust gas treatment tank. A pressure sensor is arranged inside the exhaust gas treatment tank. The ink exhaust gas is conveyed into the exhaust gas treatment tank through the air inlet pipe. After the exhaust gas contacts the activated carbon filter plate, the organic molecules inside are adsorbed by the activated carbon filter plate. After the exhaust gas is purified, the clean gas discharge valve can be opened for discharge. The exhaust gas can filter out the organic molecules more effectively after passing through multiple activated carbon filter plates. After filtering the exhaust gas, the desorbent is poured into the feed pipe. The desorbent flows into the stop valve through the feed pipe, and then the stop valve is opened and closed in sequence from top to bottom, so that the desorbent enters multiple material spreading cavities and is scattered onto multiple activated carbon filter plates through the material spreading cavities. After the desorbent reacts with the activated carbon, the pores of the activated carbon open to release the organic molecules. The motor is started, the motor drives the main shaft to rotate, the main shaft drives the activated carbon filter plate to rotate, the activated carbon filter plate drives the sliding ring and the inclined convex block to rotate, the inclined convex block jacks up the lifting slide shaft, the lifting slide shaft drives the guiding block to rise, and the guiding block pushes the active half-frame to slide leftward through the guiding of the inclined surface, so that the through hole at the bottom of the active half-frame is aligned with the through hole at the bottom of the material spreading cavity. At this time, the desorbent can reach the activated carbon filter plate through the through hole. After the lifting slide shaft is separated from the contact of the inclined convex block, the elastic telescopic rod I pushes the active half-frame to slide leftward and reset. The active half-frame squeezes the guiding block through the inclined surface, so that the guiding block and the lifting slide shaft move downward.When the sliding ring and the inclined convex block rotate continuously, the desorbent in the material spreading cavity is intermittently scattered.

[0006] Preferably, the inorganic filtration device includes an annular clamping plate. The inner surface of the annular clamping plate is rotatably connected to a rotating frame. The lower surface of the rotating frame is fixedly connected to an expansion bracket. The lower surface of the rotating frame is fixedly connected to a filter bag. The right side surface of the waste gas treatment tank is fixedly connected to a first mounting plate. The upper surface of the first mounting plate is fixedly connected to an induced draft fan. The inorganic filtration device further includes a sleeve shaft. The upper surface of the extension plate is fixedly connected to a circumferential push rod. The rear side surface of the inner wall of the waste gas treatment tank is fixedly connected to a convex plate. The lower surface of the convex plate is fixedly connected to a suspension rod. The bottom end of the suspension rod is fixedly connected to a brush plate. The inner surface of the rotating frame is fixedly connected to a connecting shaft. The annular clamping plate and the inside of the waste gas treatment tank are fixedly connected. The induced draft fan and the waste gas treatment tank are connected through a pipeline. The sleeve shaft and the lower surface of the rotating frame are fixedly connected. The sleeve shaft and the top end of the circumferential push rod are sleeved. The brush plate and the inner surface of the filter bag are in contact with each other. Before using the device, the air below the baffle in the waste gas treatment tank is pumped out by a vacuum pump to create a negative pressure in the area below the baffle. Then the waste gas is input from the air inlet pipe to the top of the waste gas treatment tank. Then the solenoid valve is opened, and the negative pressure sucks the waste gas into the area below the baffle. During the downward flow of the waste gas, it contacts the filter bag, and the filter bag adheres the dust and large particle impurities in the waste gas. Subsequently, the air pressures above and below the baffle are detected by a pressure sensor. When all the waste gas enters the area below the baffle, the solenoid valve is closed, and the induced draft fan is started. The induced draft fan generates suction to suck out the dust impurities in the filter bag, so as to quickly remove the impurities on the filter bag. The rotation of the main shaft drives the extension plate to rotate, the extension plate drives the circumferential push rod to rotate in a circle, the circumferential push rod pushes the sleeve shaft to rotate in a circle, the sleeve shaft drives the rotating frame to rotate on the annular clamping plate, and the rotating frame drives the expansion bracket and the filter bag to rotate. The expansion bracket can prevent the filter bag from winding and knotting during rotation. When the filter bag rotates, its inner surface contacts the brush plate, and friction is generated between the brush plate and the filter bag to quickly sweep off the impurities, making it easier for the impurities to be sucked out by the induced draft fan.

[0007] Preferably, the organic desorption device includes a jacket. A steam delivery pipe is fixedly connected to the left side surface of the jacket. A U-shaped adsorption pipe is fixedly connected to the left inner surface of the waste gas treatment tank. A steam recovery pipe is fixedly connected to the upper surface of the left side of the U-shaped adsorption pipe. The right end of the steam recovery pipe is fixedly connected to a condensation box. A second mounting plate is fixedly connected to the rear side surface of the waste gas treatment tank. A condenser is fixedly connected to the rear inner surface of the condensation box. A liquid outlet pipe is fixedly connected to the lower surface of the condensation box. The organic desorption device further includes a support rod. A cam is fixedly connected to the top end of the support rod. A reciprocating slide rod is slidably connected to the inner surface of the second mounting plate. An arc-shaped block is fixedly connected to the front end of the reciprocating slide rod. A scraping wall frame is fixedly connected to the rear end of the reciprocating slide rod. The jacket is fixedly connected to the outer surface of the waste gas treatment tank. An electromagnetic valve is arranged inside the through pipe. The condensation box is fixedly connected to the rear side surface of the second mounting plate. The support rod is fixedly connected to the upper surface of the connecting shaft. The reciprocating slide rod slidably penetrates through the rear side of the waste gas treatment tank. The scraping wall frame is in contact with the inner wall of the condensation box. An elastic telescopic rod II is arranged between the front side surface of the scraping wall frame and the second mounting plate. After the purified gas is discharged through the purified gas discharge valve, steam is conveyed into the jacket through the steam delivery pipe. After the jacket continuously heats up, it heats the inside of the waste gas treatment tank, so as to evaporate the residual gas and the solvent with organic molecules generated after desorption inside the activated carbon filter plate and make it flow upward. Finally, it flows into the U-shaped adsorption pipe through the through hole opened at the lower part of the U-shaped adsorption pipe, then flows into the condensation box through the steam recovery pipe, and then the condenser is started for condensation to liquefy the molecules. Finally, the generated organic waste liquid flows out through the liquid outlet pipe. When the rotating frame rotates, it drives the connecting shaft to rotate circumferentially along the axis of the hanging rod. The connecting shaft drives the support rod to rotate circumferentially. The support rod drives the cam to rotate circumferentially. After the cam contacts the arc-shaped block, it pushes it backward through the guidance of the inclined plane. When the arc-shaped block moves backward, it drives the reciprocating slide rod to slide backward in the second mounting plate. The reciprocating slide rod then drives the scraping wall frame to slide backward in the condensation box, so as to scrape off the waste liquid adhering to the inner wall of the condensation box and make it flow to the bottom of the condensation box. After the cam moves away from the arc-shaped block, the elastic reset function of the elastic telescopic rod II pulls the scraping wall frame to move forward and reset, so that the scraping wall frame slides back and forth.

[0008] The present invention adopts the above technical solutions, and can bring the following beneficial effects: 1. For the air purification and adsorption device for the gravure printing machine, the waste gas can be more effectively filtered out of organic molecules through the filtration of multiple activated carbon filter plates, preventing the residue of organic molecules. After the desorbent reacts with the activated carbon, the pores of the activated carbon open to release organic molecules, thereby restoring the adsorption capacity of the activated carbon and enhancing the continuous filtration capacity of the device. The rotation of the activated carbon filter plate increases the contact area with the desorbent, thereby enhancing the desorption effect. The desorbent in the material spreading cavity intermittently drops, preventing the desorbent from being quickly used up and unable to be evenly and comprehensively spread onto the activated carbon filter plate. After the activated carbon filter plate is in uniform contact with the desorbent, the desorption efficiency is promoted.

[0009] 2. The air purification and adsorption device for the intaglio printing press, the filter bag adheres to the dust and large particle impurities in the waste gas, preventing large particle inorganic impurities from clogging the activated carbon filter plate and affecting the purification efficiency. The induced draft fan generates suction to suck out the dust impurities in the filter bag, so as to quickly remove the impurities on the filter bag and facilitate the long-term use of the device.

[0010] 3. The air purification and adsorption device for the intaglio printing press, the expansion bracket can prevent the filter bag from winding and knotting during rotation. When the filter bag rotates, the inner surface contacts the brush plate, and friction is generated between the brush plate and the filter bag to quickly sweep off the impurities, making the impurities easier to be sucked out by the induced draft fan, and improving the cleaning efficiency of the impurities on the filter bag.

[0011] 4. The air purification and adsorption device for the intaglio printing press, the solvent with organic pollution molecules flows into the condensation box through the steam recovery pipe, then the condenser is started for condensation to liquefy the molecules, and finally the generated organic waste liquid flows out through the liquid outlet pipe, so as to quickly discharge the organic pollution molecules from the device, facilitate multiple waste gas filtrations, and improve the working efficiency.

[0012] 5. The air purification and adsorption device for the intaglio printing press, the scraping wall frame slides backward in the condensation box, so as to scrape off the waste liquid adhering to the inner wall of the condensation box and flow it into the bottom of the condensation box, facilitating the waste liquid discharge. The elastic reset function of the second elastic telescopic rod pulls the scraping wall frame to move forward and reset, so that the scraping wall frame slides back and forth, improving the waste liquid aggregation effect and promoting the pollutant recovery and treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention; Figure 2 is the front side three-dimensional semi-sectional structure schematic diagram of the present invention; Figure 3 is the front side three-dimensional semi-sectional structure schematic diagram of the waste gas treatment tank of the present invention; Figure 4 is the present invention Figure 3 the enlarged structure schematic diagram of A in; Figure 5 is the front side three-dimensional semi-sectional structure schematic diagram of the inorganic filtration device of the present invention; Figure 6 is the present invention Figure 5 the enlarged structure schematic diagram of B in; Figure 7 is the rear side three-dimensional semi-sectional structure schematic diagram of the organic desorption device of the present invention; Figure 8 is the present invention Figure 7 the enlarged structure schematic diagram of C in; Figure 9Schematic diagram of the front side three-dimensional half-section structure of the organic desorption device of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural schematic diagram of D in

[0014] In the figure: 1, waste gas treatment tank; 2, intake pipe; 3, main shaft; 4, activated carbon filter plate; 5, clean gas discharge valve; 6, inorganic filtration device; 7, organic desorption device; 8, feed pipe; 9, stop valve; 10, material spreading cavity; 11, movable half-frame; 12, lifting sliding shaft; 13, guide block; 14, sliding ring; 15, inclined convex block; 16, partition board; 17, through pipe; 18, extension board; 61, annular clamping plate; 62, rotating frame; 63, expansion bracket; 64, filter bag; 65, first mounting plate; 66, induced draft fan; 67, sleeve shaft; 68, surrounding push rod; 69, convex plate; 610, suspension rod; 611, brush plate; 612, coupling shaft; 71, jacket; 72, steam supply pipe; 73, U-shaped adsorption pipe; 74, steam recovery pipe; 75, second mounting plate; 76, condensation box; 77, condenser; 78, liquid outlet pipe; 79, support rod; 710, cam; 711, reciprocating sliding rod; 712, arc-shaped block; 713, wall scraping frame. Detailed implementation manners

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figures 1 - 10, an embodiment of the present invention is: an air purification adsorption device for a gravure printing machine, including an exhaust gas treatment tank 1. The bottom end of the exhaust gas treatment tank 1 is rotatably connected to a main shaft 3. The circumferential surface of the main shaft 3 is fixedly connected with an activated carbon filter plate 4. An inorganic filtration device 6 for filtering inorganic particles is arranged inside the exhaust gas treatment tank 1. An organic desorption device 7 for heating, desorbing and recycling organic substances is arranged outside the exhaust gas treatment tank 1. The exhaust gas can more effectively filter out organic molecules after passing through multiple activated carbon filter plates 4, preventing the residue of organic molecules. After the desorbent reacts with the activated carbon, the pores of the activated carbon open to release organic molecules, thereby restoring the adsorption capacity of the activated carbon and enhancing the continuous filtration capacity of the device. A feed pipe 8 is arranged on the right side of the exhaust gas treatment tank 1. A stop valve 9 is fixedly connected to the surface of the feed pipe 8. The right inner wall surface of the exhaust gas treatment tank 1 is fixedly connected with a material spreading cavity 10. An active half-frame 11 is slidably connected to the inner wall of the material spreading cavity 10. A lifting slide shaft 12 is slidably connected to the bottom inner surface of the material spreading cavity 10. The top end of the lifting slide shaft 12 is fixedly connected with a guide block 13. The circumferential surface of the activated carbon filter plate 4 is fixedly connected with a sliding ring 14. The upper surface of the sliding ring 14 is fixedly connected with an inclined convex block 15. A partition plate 16 is fixedly connected to the inner wall of the exhaust gas treatment tank 1. A through pipe 17 is fixedly connected to the lower surface of the partition plate 16. The top end of the main shaft 3 is fixedly connected with an extension plate 18. An air inlet pipe 2 is fixedly connected to the top end of the exhaust gas treatment tank 1. A clean gas discharge valve 5 is fixedly connected to the rear side surface of the bottom of the exhaust gas treatment tank 1. The stop valve 9 is fixedly connected to the right side surface of the exhaust gas treatment tank 1. The upper surfaces of the lifting slide shaft 12 and the inclined convex block 15 are in contact with each other. The sliding ring 14 is slidably connected to the inner wall of the exhaust gas treatment tank 1. The left inclined surface of the guide block 13 is in contact with the right inclined surface of the active half-frame 11. An elastic telescopic rod one is arranged between the left side surface of the active half-frame 11 and the inner wall of the material spreading cavity 10. The top end of the main shaft 3 is rotatably connected to the inner surface of the partition plate 16. The bottom end of the main shaft 3 is fixedly connected with a motor, and the motor is fixedly connected to the bottom end of the exhaust gas treatment tank 1. A pressure sensor is arranged inside the exhaust gas treatment tank 1. The rotation of the activated carbon filter plate 4 increases the contact area with the desorbent, thereby enhancing the desorption effect. The desorbent in the material spreading cavity 10 is intermittently scattered, preventing the desorbent from being quickly used up and unable to be evenly and comprehensively scattered onto the activated carbon filter plate 4. After the activated carbon filter plate 4 is evenly contacted with the desorbent, the desorption efficiency is promoted.

[0017] Working principle: The ink waste gas is transported to the waste gas treatment tank 1 through the air inlet pipe 2. After the waste gas contacts the activated carbon filter plate 4, the organic molecules inside are adsorbed by the activated carbon filter plate 4. After the waste gas is purified, the clean gas discharge valve 5 can be opened for discharge. The waste gas is filtered through the multi-layer activated carbon filter plate 4 to more effectively filter out the organic molecules and prevent the organic molecules from remaining. After filtering the waste gas, the desorbent is poured into the feed pipe 8, and the desorbent flows into the stop valve 9 through the feed pipe 8. Then, the stop valve 9 is opened and closed in order from top to bottom, so that the desorbent enters multiple spreading cavities 10 and is spread onto multiple activated carbon filter plates 4 through the spreading cavities 10. After the desorbent reacts with the activated carbon, the pores of the activated carbon are opened to release the organic molecules, thereby restoring the adsorption capacity of the activated carbon, thereby improving the continuous filtering capacity of the device. The motor is started, and the motor drives the main shaft 3 to rotate, and the main shaft 3 drives the activated carbon filter plate 4 to rotate, thereby improving the activated carbon filter plate 4. The contact area with the desorbent is increased, thereby improving the desorption effect. The activated carbon filter plate 4 drives the sliding ring 14 and the inclined protrusion 15 to rotate. The inclined protrusion 15 lifts the lifting slide shaft 12, and the lifting slide shaft 12 drives the guide block 13 to rise. The guide block 13 pushes the movable half frame 11 to slide to the left through the guide of the inclined surface, so that the bottom through hole of the movable half frame 11 is aligned with the bottom through hole of the spreading cavity 10. At this time, the desorbent can flow from the through hole to the activated carbon filter plate 4, and the lifting slide shaft 12 is separated from the inclined surface. After the collision of the protrusion 15, the elastic telescopic rod pushes the movable half frame 11 to slide to the left and reset. The movable half frame 11 squeezes the guide block 13 through the inclined surface, so that the guide block 13 and the lifting slide shaft 12 move downward. When the sliding ring 14 and the inclined protrusion 15 continue to rotate, the desorbent in the spreading cavity 10 is intermittently scattered, preventing the desorbent from being spread out quickly, resulting in the desorbent being unable to be evenly and comprehensively spread on the activated carbon filter plate 4. The activated carbon filter plate 4 is evenly in contact with the desorbent, which promotes the desorption efficiency.

[0018] See also Figures 1 - 10, on the basis of the above embodiments, in another embodiment of the present invention, the inorganic filtration device 6 includes an annular clamping plate 61. The inner surface of the annular clamping plate 61 is rotatably connected to a rotating frame 62. The lower surface of the rotating frame 62 is fixedly connected to an expansion bracket 63. The lower surface of the rotating frame 62 is fixedly connected to a filter bag 64. The right side surface of the waste gas treatment tank 1 is fixedly connected to a first mounting plate 65. The upper surface of the first mounting plate 65 is fixedly connected to an induced draft fan 66. The filter bag 64 adheres to the dust and large particle impurities in the waste gas, preventing large particle inorganic impurities from blocking the activated carbon filter plate 4 and affecting the purification efficiency. The induced draft fan 66 generates suction to suck out the dust impurities in the filter bag 64, so as to quickly remove the impurities on the filter bag 64 and facilitate the long-term use of the device. The inorganic filtration device 6 further includes a sleeve shaft 67. The upper surface of the extension plate 18 is fixedly connected to a surrounding push rod 68. The rear side surface of the inner wall of the waste gas treatment tank 1 is fixedly connected to a convex plate 69. The lower surface of the convex plate 69 is fixedly connected to a suspension rod 610. The bottom end of the suspension rod 610 is fixedly connected to a brush plate 611. The inner surface of the rotating frame 62 is fixedly connected to a connecting shaft 612. The annular clamping plate 61 and the inside of the waste gas treatment tank 1 are fixedly connected. The induced draft fan 66 and the waste gas treatment tank 1 are connected through a pipeline. The sleeve shaft 67 and the lower surface of the rotating frame 62 are fixedly connected. The sleeve shaft 67 and the top end of the surrounding push rod 68 are sleeved. The brush plate 611 and the inner surface of the filter bag 64 are in contact with each other. The expansion bracket 63 can prevent the filter bag 64 from winding and knotting during rotation. When the filter bag 64 rotates, its inner surface contacts the brush plate 611. Friction is generated between the brush plate 611 and the filter bag 64, and the impurities are quickly swept off, making it easier for the impurities to be sucked out by the induced draft fan 66, improving the cleaning efficiency of the impurities on the filter bag 64.

[0019] Working principle: Before using the device, the air below the baffle plate 16 inside the waste gas treatment tank 1 is pumped out through a vacuum pump to create a negative pressure in the area below the baffle plate 16. Then, the waste gas is input from the intake pipe 2 into the top of the waste gas treatment tank 1. Next, the solenoid valve is opened, and the negative pressure sucks the waste gas into the area below the baffle plate 16. During the downward flow of the waste gas, it comes into contact with the filter bag 64. The filter bag 64 adheres to the dust and large particle impurities in the waste gas to prevent the large particle inorganic impurities from clogging the activated carbon filter plate 4 and affecting the purification efficiency. Subsequently, the air pressures above and below the baffle plate 16 are detected by the air pressure sensor. After all the waste gas enters the area below the baffle plate 16, the solenoid valve is closed, and the induced draft fan 66 is started. The induced draft fan 66 generates suction to suck out the dust impurities in the filter bag 64, thus quickly removing the impurities on the filter bag 64 and facilitating the long-term use of the device. The rotation of the main shaft 3 drives the rotation of the extension plate 18. The extension plate 18 drives the circumferential rotation of the surrounding push rod 68. The surrounding push rod 68 pushes the circumferential rotation of the sleeve shaft 67. The sleeve shaft 67 drives the rotation frame 62 to rotate on the annular clamping plate 61. The rotation frame 62 then drives the expansion support 63 and the filter bag 64 to rotate. The expansion support 63 can prevent the filter bag 64 from winding and knotting during rotation. When the filter bag 64 rotates, its inner surface comes into contact with the brush plate 611. Friction is generated between the brush plate 611 and the filter bag 64, and the impurities are quickly swept off, making it easier for the impurities to be sucked out by the induced draft fan 66 and improving the cleaning efficiency of the impurities on the filter bag 64.

[0020] Please refer to Figures 1 - 10, on the basis of the above embodiments, in another embodiment of the present invention, the organic desorption device 7 includes a jacket 71. A steam delivery pipe 72 is fixedly connected to the left side surface of the jacket 71. A U-shaped adsorption pipe 73 is fixedly connected to the left inner surface of the waste gas treatment tank 1. A steam recovery pipe 74 is fixedly connected to the upper left surface of the U-shaped adsorption pipe 73. The right end of the steam recovery pipe 74 is fixedly connected to a condensation box 76. A second mounting plate 75 is fixedly connected to the rear side surface of the waste gas treatment tank 1. A condenser 77 is fixedly connected to the rear inner surface of the condensation box 76. A liquid outlet pipe 78 is fixedly connected to the lower surface of the condensation box 76. The solvent with organic pollutant molecules flows into the condensation box 76 through the steam recovery pipe 74. Then, the condenser 77 is started to condense and liquefy the molecules. Finally, the generated organic waste liquid flows out through the liquid outlet pipe 78, so as to quickly discharge the organic pollutant molecules from the device, facilitate multiple waste gas filtrations, and improve the working efficiency. The organic desorption device 7 further includes a support rod 79. A cam 710 is fixedly connected to the top end of the support rod 79. A reciprocating slide rod 711 is slidably connected to the inner surface of the second mounting plate 75. An arc-shaped block 712 is fixedly connected to the front end of the reciprocating slide rod 711. A scraping wall frame 713 is fixedly connected to the rear end of the reciprocating slide rod 711. The jacket 71 is fixedly connected to the outer surface of the waste gas treatment tank 1. An electromagnetic valve is arranged inside the through pipe 17. The condensation box 76 is fixedly connected to the rear side surface of the second mounting plate 75. The support rod 79 is fixedly connected to the upper surface of the coupling shaft 612. The reciprocating slide rod 711 slidably penetrates through the rear side of the waste gas treatment tank 1. The scraping wall frame 713 is in contact with the inner wall of the condensation box 76. An elastic telescopic rod II is arranged between the front side surface of the scraping wall frame 713 and the second mounting plate 75. The scraping wall frame 713 slides backward in the condensation box 76, so as to scrape the waste liquid adhered to the inner wall of the condensation box 76 and flow it into the bottom of the condensation box 76, facilitating the waste liquid discharge. The elastic reset function of the elastic telescopic rod II pulls the scraping wall frame 713 to move forward and reset, so that the scraping wall frame 713 slides back and forth, improving the waste liquid aggregation effect and promoting the pollutant recovery and treatment efficiency.

[0021] Working principle: After discharging the purified gas through the purified gas discharge valve 5, steam is conveyed into the jacket 71 through the steam pipe 72. After the jacket 71 is continuously heated, the inside of the waste gas treatment tank 1 is heated, so as to evaporate the residual gas and the solvent with organic molecules generated after desorption inside the activated carbon filter plate 4 and make it flow upward. Finally, it flows into the U-shaped adsorption pipe 73 through the through hole opened at the lower part of the U-shaped adsorption pipe 73, then flows into the condensation box 76 through the steam recovery pipe 74, and then the condenser 77 is started for condensation to liquefy the molecules. Finally, the generated organic waste liquid flows out through the liquid outlet pipe 78, so as to quickly discharge the organic pollution molecules from the device, facilitate multiple waste gas filtrations, and improve the working efficiency. When the rotating frame 62 rotates, it drives the connecting shaft 612 to rotate circumferentially along the axis of the hanging rod 610. The connecting shaft 612 drives the support rod 79 to rotate circumferentially. The support rod 79 drives the cam 710 to rotate circumferentially. After the cam 710 contacts the arc-shaped block 712, it pushes the arc-shaped block 712 to move backward through the guidance of the inclined plane. When the arc-shaped block 712 moves backward, it drives the reciprocating slide rod 711 to slide backward in the second mounting plate 75. The reciprocating slide rod 711 drives the wall scraping frame 713 to slide backward in the condensation box 76, so as to scrape the waste liquid adhering to the inner wall of the condensation box 76 and make it flow to the bottom of the condensation box 76, facilitating the discharge of the waste liquid. After the cam 710 moves away from the arc-shaped block 712, the elastic reset function of the second elastic telescopic rod pulls the wall scraping frame 713 to move forward and reset, so that the wall scraping frame 713 slides back and forth, improving the waste liquid aggregation effect and promoting the pollutant recovery and treatment efficiency.

[0022] The present invention provides an air purification and adsorption device for a gravure printing machine. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred implementation mode of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be realized by the prior art.

Claims

1. An air purification and adsorption device for an intaglio printing press, comprising an exhaust gas treatment tank (1), characterized in that: The bottom end of the waste gas treatment tank (1) is rotatably connected to a main shaft (3). The circumferential surface of the main shaft (3) is fixedly connected to an activated carbon filter plate (4). An inorganic filtration device (6) for filtering inorganic particles is arranged inside the waste gas treatment tank (1). An organic desorption device (7) for heating, desorbing and recycling organic substances is arranged outside the waste gas treatment tank (1). A feed pipe (8) is arranged on the right side of the waste gas treatment tank (1). A stop valve (9) is fixedly connected to the surface of the feed pipe (8). The right inner side surface of the inner wall of the waste gas treatment tank (1) is fixedly connected to a material spreading cavity (10). An active half-frame (11) is slidably connected to the inner wall of the material spreading cavity (10). A lifting slide shaft (12) is slidably connected to the bottom inner surface of the material spreading cavity (10). The top end of the lifting slide shaft (12) is fixedly connected to a guiding block (13). The circumferential surface of the activated carbon filter plate (4) is fixedly connected to a sliding ring (14). The upper surface of the sliding ring (14) is fixedly connected to an inclined convex block (15). A partition plate (16) is fixedly connected to the inner wall of the waste gas treatment tank (1). A through pipe (17) is fixedly connected to the lower surface of the partition plate (16). The top end of the main shaft (3) is fixedly connected to an extension plate (18).

2. The air purification and adsorption device for an intaglio printing press according to claim 1, characterized in that: An air inlet pipe (2) is fixedly connected to the top end of the waste gas treatment tank (1). A clean gas discharge valve (5) is fixedly connected to the rear side surface of the bottom of the waste gas treatment tank (1). The stop valve (9) is fixedly connected to the right side surface of the waste gas treatment tank (1). The upper surfaces of the lifting slide shaft (12) and the inclined convex block (15) are in contact with each other. The sliding ring (14) is slidably connected to the inner wall of the waste gas treatment tank (1). The left inclined surface of the guiding block (13) is in contact with the right inclined surface of the active half-frame (11). An elastic telescopic rod I is arranged between the left side surface of the active half-frame (11) and the inner wall of the material spreading cavity (10). The top end of the main shaft (3) is rotatably connected to the inner surface of the partition plate (16). The bottom end of the main shaft (3) is fixedly connected to a motor, and the motor is fixedly connected to the bottom end of the waste gas treatment tank (1). A pressure sensor is arranged inside the waste gas treatment tank (1).

3. The air purification and adsorption device for an intaglio printing press according to claim 2, wherein: The inorganic filtration device (6) includes an annular clamping plate (61). The inner surface of the annular clamping plate (61) is rotatably connected to a rotating frame (62). An expansion bracket (63) is fixedly connected to the lower surface of the rotating frame (62). A filter bag (64) is fixedly connected to the lower surface of the rotating frame (62). A first mounting plate (65) is fixedly connected to the right side surface of the waste gas treatment tank (1). An induced draft fan (66) is fixedly connected to the upper surface of the first mounting plate (65).

4. An air purification and adsorption device for an intaglio printing press according to claim 3, characterized in that: The inorganic filtration device (6) further includes a sleeve shaft (67). The upper surface of the extension plate (18) is fixedly connected with a surrounding push rod (68). The rear side inner wall of the waste gas treatment tank (1) is fixedly connected with a convex plate (69). The lower surface of the convex plate (69) is fixedly connected with a suspension rod (610). The bottom end of the suspension rod (610) is fixedly connected with a brush plate (611). The inner surface of the rotating frame (62) is fixedly connected with a connecting shaft (612).

5. An air purification and adsorption device for an intaglio printing press according to claim 4, characterized in that: The annular clamping plate (61) is fixedly connected to the inside of the waste gas treatment tank (1). The induced draft fan (66) is communicated with the waste gas treatment tank (1) through a pipeline. The sleeve shaft (67) is fixedly connected to the lower surface of the rotating frame (62). The sleeve shaft (67) is sleeved on the top end of the surrounding push rod (68). The brush plate (611) is in contact with the inner surface of the filter bag (64).

6. An air purification and adsorption device for an intaglio printing press according to claim 5, characterized in that: The organic desorption device (7) includes a jacket (71). The left side surface of the jacket (71) is fixedly connected with a steam supply pipe (72). The left inner surface of the waste gas treatment tank (1) is fixedly connected with a U-shaped adsorption pipe (73). The upper left surface of the U-shaped adsorption pipe (73) is fixedly connected with a steam recovery pipe (74). The right end of the steam recovery pipe (74) is fixedly connected with a condensation box (76). The rear side surface of the waste gas treatment tank (1) is fixedly connected with a second mounting plate (75). The rear inner surface of the condensation box (76) is fixedly connected with a condenser (77). The lower surface of the condensation box (76) is fixedly connected with a liquid outlet pipe (78).

7. An air purification and adsorption device for a gravure printing machine according to claim 6, characterized in that: The organic desorption device (7) further includes a support rod (79). The top end of the support rod (79) is fixedly connected with a cam (710). The inner surface of the second mounting plate (75) is slidably connected with a reciprocating slide rod (711). The front end of the reciprocating slide rod (711) is fixedly connected with an arc-shaped block (712). The rear end of the reciprocating slide rod (711) is fixedly connected with a wall scraping frame (713).

8. An air purification and adsorption device for a gravure printing machine according to claim 7, characterized in that: The jacket (71) is fixedly connected to the outer surface of the waste gas treatment tank (1). An electromagnetic valve is arranged inside the through pipe (17). The condensation box (76) is fixedly connected to the rear side surface of the second mounting plate (75). The support rod (79) is fixedly connected to the upper surface of the connecting shaft (612). The reciprocating slide rod (711) slidably penetrates through the rear side of the waste gas treatment tank (1). The wall scraping frame (713) is in contact with the inner wall of the condensation box (76). An elastic telescopic rod II is arranged between the front side surface of the wall scraping frame (713) and the second mounting plate (75).

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