A waste gas treatment device for printing and drying of a medical packaging film

Abstract

The application discloses a kind of medical packaging film printing drying drying waste gas treatment device, it is related to waste gas treatment technical field, including: the printing machine, dryer, waste gas treatment equipment, adsorption chamber and first assembly installed on it connected in turn, adsorption chamber is double-tank alternation structure, waste gas treatment equipment is communicated with dryer by external pipeline, first assembly includes: fixedly connected to the rectifier plate A and rectifier plate B in adsorption chamber interior;Through the synergistic effect of resistance wind touch rod, trigger plate, flow guide fin and the like components, the deflection angle of flow guide fin can be self-adaptively adjusted according to the size of waste gas wind force, when wind force is larger, deflection angle is reduced to reduce flow resistance, to avoid fan overload, when wind force is smaller, deflection angle is increased to fully disperse airflow, avoid local airflow distribution uneven, ensure that waste gas uniformly penetrates subsequent activated carbon layer, avoid the situation that waste gas is unevenly distributed under different wind volume.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a waste gas treatment device for printing and drying pharmaceutical packaging films. Background Technology

[0002] In the production of pharmaceutical packaging films, printing and drying are core processes that generate large amounts of waste gas containing volatile organic compounds (VOCs), ink residues, and fine impurities. This waste gas not only has a pungent odor but some components are also toxic. Direct release into the air would cause severe air pollution, damage the ecological environment, and harm the health of operators, while also failing to meet the stringent environmental emission requirements of the pharmaceutical industry. Therefore, specialized waste gas treatment equipment is necessary to purify this waste gas before it can meet emission standards.

[0003] Currently, most existing waste gas treatment devices used for printing and drying pharmaceutical packaging films employ single adsorption or simple flow equalization + adsorption treatment modes. While these can achieve certain waste gas treatment effects, they still have many technical shortcomings in practical applications, making it difficult to meet the needs of continuous industrial production and environmental compliance requirements. These shortcomings are as follows: First, existing waste gas treatment devices have poor flow equalization performance, making it difficult to adapt to fluctuating waste gas volume. Waste gas generated during the printing and drying process of pharmaceutical packaging films is characterized by large volume, low concentration, and frequent volume fluctuations. Most existing devices lack effective airflow guidance and adaptive flow equalization structures. Upon entering the treatment device, the waste gas easily impacts internal components, leading to turbulent airflow. Simultaneously, impurities and ink residues from the waste gas easily adhere to the surface of the flow equalization components, causing blockage of the vents. Furthermore, gaps easily appear between the flow equalization components and the inner wall of the device, creating airflow short-circuit and preventing uniform waste gas distribution. In addition, existing flow equalization structures cannot adaptively adjust to the waste gas flow rate. When the flow rate is high, the resistance of the flow equalization structure is too great, easily leading to increased airflow pressure and fan overload. When the flow rate is low, the airflow cannot be fully dispersed, easily resulting in uneven local distribution, which in turn prevents the subsequent activated carbon layer from being used evenly, affecting the adsorption effect.

[0004] Secondly, the activated carbon adsorption efficiency of existing devices is low and the utilization rate is insufficient. On the one hand, the contact between waste gas and activated carbon in existing devices is not sufficient. Most of them adopt a unidirectional adsorption structure, which makes it difficult for waste gas to penetrate evenly to all areas of the activated carbon layer. This easily leads to the phenomenon of local saturation of activated carbon and local unutilized areas, especially the activated carbon far from the gas inlet, where the adsorption effect is extremely poor, resulting in a significant reduction in the utilization rate of activated carbon. On the other hand, the adsorption structure design of existing devices is unreasonable. There is no effective secondary adsorption structure. Some of the waste gas after preliminary adsorption is easily released, which cannot ensure that the waste gas treatment meets the standards and fails to meet environmental emission requirements.

[0005] Therefore, this invention proposes a waste gas treatment device for printing and drying pharmaceutical packaging films to solve the above problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a waste gas treatment device for printing and drying pharmaceutical packaging films, thereby solving the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a waste gas treatment device for printing and drying pharmaceutical packaging films, comprising: a printing machine, a dryer, a waste gas treatment device, an adsorption chamber, and a first component installed thereon, connected in sequence; the adsorption chamber has a double-tank alternating structure; the waste gas treatment device and the dryer are connected by an external pipe; the first component includes: a rectifier plate A and a rectifier plate B fixedly connected inside the adsorption chamber. The first component also includes: a flow guide fin disposed between rectifier plate A and rectifier plate B, wherein multiple sets of flow guide fins are equidistantly and intermittently arranged, the flow guide fins are rotatably connected to the adsorption chamber, a movable rod is fixedly connected to the bottom of the flow guide fins near the rectifier plate B, a limiting tube is fixedly connected to the bottom of the rectifier plate A, a wind-resistant contact rod is slidably inserted into the limiting tube, the inclined surface of the wind-resistant contact rod is set towards the flow guide fins, a limiting groove is fixedly connected to the bottom of the side of the rectifier plate B near the rectifier plate A, a trigger plate is slidably inserted into the limiting groove, a movable groove is opened on the trigger plate, and the movable rod is slidably connected to the movable groove; It also includes a second component for multi-directional adsorption function.

[0008] Preferably, the rectifier plate A is disposed at the air inlet end of the adsorption chamber, and multiple sets of air vents are arranged on both the rectifier plate A and the rectifier plate B, and the air vents are enlarged, with a gap between the rectifier plate A and the rectifier plate B.

[0009] Preferably, the guide fins are initially inclined to the rectifier plate A, the outer surface of the guide fins is arc-shaped, the movable rod is composed of a protrusion and a column rod at the bottom on the side away from the protrusion, and the wind-resistant contact rod is composed of a sliding rod and a right-angled triangle, wherein the triangle is disposed between the rectifier plate A and the rectifier plate B and is close to the inner wall of the adsorption chamber.

[0010] Preferably, the trigger plate is fixedly connected to an abutment rod at one end near the wind-resistant contact rod, which abuts against the inclined surface of the wind-resistant contact rod. A spring is fixedly connected to the trigger plate at the other end away from the wind-resistant contact rod, and the other end of the spring is fixedly connected to the limiting groove. Multiple movable grooves are equally spaced and the number is the same as the number of guide fins.

[0011] Preferably, the second component includes an adsorption layer disposed at the outlet end of the adsorption chamber. A positioning shell is disposed on the side of the adsorption layer near the adsorption chamber. The positioning shell is fixedly connected to the adsorption layer by a fixing rod. An assisting baffle is symmetrically fixedly connected inside the positioning shell. A porous rotating shell is rotatably connected to the outer ring of the positioning shell. A turning column is slidably connected to the side of the positioning shell away from the adsorption layer. An arc plate is fixedly connected to the end of the turning column away from the center of the positioning shell. The inner arc surface of the arc plate slides against the outer arc surface of the positioning shell. Two sets of turning columns are symmetrically arranged around the central axis of the arc plate. A fan-shaped carrier is fixedly connected to the end of the arc plate away from the turning column. A spiral guide is fixedly connected to the center of the positioning shell. It also includes a third component for mortising activated carbon to prevent adsorption of hollow structures.

[0012] Preferably, the positioning shell is a cylindrical cover with symmetrically arranged adjustment slots on both sides and is hollow. The assisting stop is composed of an L-shaped rod and a triangular body, and the triangular body in the assisting stop is on the same straight line as the adjustment slot on the positioning shell.

[0013] Preferably, the porous rotating shell is driven to rotate by a drive assembly installed at the center of the positioning shell, the arc plate is composed of an arc plate and a connecting rod, the adjusting column, the arc plate and the fan-shaped carrier are arranged in six sets around the positioning shell, the fan-shaped carrier is arranged in a fan-shaped hollow shape, the fan-shaped carrier is equipped with honeycomb activated carbon, and the spiral guide is composed of a hollow tube and a spiral guide body inside the tube.

[0014] Preferably, the third component includes a pressure plate slidably connected to the fan-shaped loading body. Guide tubes are fixedly connected to all four sides of the pressure plate on the side away from the fan-shaped loading body. Two limiting holes are symmetrically opened on the outer ring of the guide tubes. A fixed pressure plate is provided at the end of the guide tube away from the pressure plate. The fixed pressure plate is fixedly connected to the fan-shaped loading body. Insertion posts are fixedly connected to all four sides of the fixed pressure plate near the guide tubes. A compression spring is fixedly connected to the end of each insertion post near the guide tube. Guide posts are symmetrically fixedly connected to the outer ring of the end of each insertion post near the compression spring. The guide posts are slidably connected within the limiting holes. The insertion posts and compression springs are inserted into the guide tubes, and the compression springs are initially in a compressed state.

[0015] Preferably, the pressure plate and the fixed pressure plate have the same shape and are both snapped into and adapted to the inside of the fan-shaped carrier. Both the pressure plate and the fixed pressure plate have multiple sets of ventilation holes at equal intervals.

[0016] Compared with the prior art, the present invention provides a waste gas treatment device for printing and drying pharmaceutical packaging films, which has the following beneficial effects: By setting rectifier plates A and B at the air inlet of the adsorption chamber, the exhaust gas can be guided smoothly into the adsorption chamber, avoiding airflow turbulence caused by the exhaust gas directly impacting the internal components, thus ensuring airflow stability from the source. The rectifier plates A and B in the first component work together, and the anti-stick coating sprayed on their surfaces can effectively prevent the adhesion of impurities and ink residues in the exhaust gas, avoid clogging of the vents, and ensure unobstructed flow channels. The sealing strips set around the two plates can prevent airflow short circuits, ensuring that all exhaust gas flows through the expanded vents on them. The enlarged expanded vents can achieve initial airflow equalization and distribution of the exhaust gas, allowing the airflow to enter the subsequent adjustment stage evenly. Through the coordinated action of components such as the wind-resistant contact rod, trigger plate, and guide fins, the deflection angle of the guide fins can be adaptively adjusted according to the size of the exhaust gas wind force. When the wind force is large, the deflection angle is reduced to reduce the flow resistance and avoid fan overload. When the wind force is small, the deflection angle is increased to fully disperse the airflow and avoid uneven local airflow distribution. This ensures that the exhaust gas penetrates the subsequent activated carbon layer evenly and avoids uneven exhaust gas distribution under different air volumes.

[0017] By combining the spiral guide body inside the spiral guide with the hollow tube, the uniformly distributed waste gas can be evenly transported to the side wall and interior of the fan-shaped loading body, allowing the waste gas to fully contact the honeycomb activated carbon inside the fan-shaped loading body and improving the single-pass adsorption effect. At the same time, through the synergistic action of components such as the porous rotating shell, the rotating column, the arc plate, and the assisting baffle, the fan-shaped loading body can be rotated 180 degrees, so that the two sides of the fan-shaped loading body alternately face the air inlet end. This effectively avoids the problem of insufficient adsorption of activated carbon on the side of the fan-shaped loading body away from the air inlet end, ensuring that the honeycomb activated carbon inside the fan-shaped loading body is evenly utilized and greatly improving the activated carbon utilization rate. In addition, the honeycomb activated carbon filled in the adsorption layer can perform secondary adsorption on the exhaust gas that may still escape after being adsorbed by the above-mentioned components. The dual adsorption structure further intercepts harmful components in the exhaust gas, ensuring that the exhaust gas treatment meets the standards and environmental emission requirements. Moreover, the fan-shaped carrier is set in a fan-shaped hollow shape and is arranged in six sets around the positioning shell, which further increases the contact area between the exhaust gas and the activated carbon and further optimizes the adsorption effect.

[0018] By combining components such as the pressure plate, guide tube, fixed pressure plate, and compression spring, the problem of activated carbon easily settling and pulverizing during long-term use, thus forming airflow short-circuit channels, can be effectively solved. The compression spring is initially in a compressed state. When gaps appear due to the settling of activated carbon in the fan-shaped loading body, the released restoring force can push the pressure plate towards the activated carbon, tightly pressing the activated carbon and ensuring that the activated carbon layer always remains dense and uniform, avoiding airflow short-circuiting and ensuring the stability of the adsorption process. At the same time, the pressure plate and fixed pressure plate are identical in shape and fit into the internal snap-fit ​​of the fan-shaped loading carrier. The guide post on the plug-in column is slidably connected to the limiting hole on the outer ring of the guide tube, ensuring smooth sliding of the pressure plate and further improving the operational stability of the component. The vent holes opened on the pressure plate and fixed pressure plate do not affect the flow of waste gas, but also help fix the activated carbon, reduce activated carbon pulverization and loss, extend the service life of activated carbon, and reduce the use and maintenance costs of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 This is a right-side view of the overall structure of the present invention; Figure 4 This is an internal structural view of the local waste gas treatment device of the present invention; Figure 5 This is a structural diagram of the adsorption chamber of the present invention; Figure 6 This is a partial structural diagram of the first component of the present invention; Figure 7 This is a top view of the disassembled first component of the present invention; Figure 8 This is a structural diagram of the second component of the present invention; Figure 9 This is a disassembled structural diagram of the second component of the present invention; Figure 10 This is a structural diagram of the third component of the present invention; Figure 11 For the present invention Figure 10 Enlarged structural diagram at point A in the middle.

[0020] In the picture: 11. Printing press; 12. Dryer; 13. Waste gas treatment equipment; 14. Adsorption chamber; 2101. Rectifier plate A; 2102. Rectifier plate B; 22. Guide fins; 23. Movable rod; 24. Limiting tube; 25. Wind-resistant contact rod; 26. Limiting groove; 27. Trigger plate; 28. Movable groove; 31. Adsorption layer; 32. Positioning shell; 33. Assisting baffle; 34. Porous rotating shell; 35. Adjusting column; 36. Arc plate; 37. Fan-shaped carrier; 38. Spiral fluid guide; 41. Pressure plate; 42. Guide tube; 43. Limiting hole; 44. Fixing pressure plate; 45. Insertion post; 46. Compression spring; 47. Guide post. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] Example Please refer to Figures 1 to 7 As shown: To address the problems mentioned in the technical solutions, this application provides a waste gas treatment device for printing and drying pharmaceutical packaging films, comprising: a printing machine 11, a dryer 12, a waste gas treatment device 13, an adsorption chamber 14 connected in sequence, and a first component installed thereon. The adsorption chamber 14 has a double-tank alternating structure. The waste gas treatment device 13 and the dryer 12 are connected through an external pipe. The first component includes: a rectifier plate A2101 and a rectifier plate B2102 fixedly connected inside the adsorption chamber 14. The surfaces of the rectifier plate A2101 and the rectifier plate B2102 are coated with an anti-stick coating, and sealing strips are provided between the rectifier plate A2101 and the inner wall of the adsorption chamber 14. The airflow is evenly distributed through the expansion-type vent holes on the rectifier plate A2101 and the rectifier plate B2102. The first component also includes: guide fins 22 disposed between rectifier plate A2101 and rectifier plate B2102. The guide fins 22 are used in conjunction with multiple structures to adjust the deflection angle according to different air volumes, dispersing the airflow and forcing uniform flow. When the wind force is low: the deflection angle of the guide fins 22 needs to be increased to prevent uneven airflow distribution due to low wind speed through greater angle obstruction and staggered guidance, ensuring that the airflow is fully dispersed and evenly penetrates the activated carbon layer, preventing local unutilized activated carbon. When the wind force is high: the deflection angle of the guide fins 22 needs to be decreased to reduce the resistance of the uniform flow channel, preventing excessive obstruction of the fins by excessive wind force, which could lead to increased airflow pressure and fan overload. Multiple sets of guide fins 22 are equidistantly and intermittently arranged. The guide fins 22 are rotatably connected to the adsorption chamber 14. A movable rod 23 is fixedly connected to the bottom of the guide fins 22 near the rectifier plate B2102. The bottom of the rectifier plate A2101 is fixedly... A fixed connection limit tube 24 is provided, and a wind-resistant contact rod 25 is slidably inserted into the limit tube 24. Driven by exhaust gas of different air volumes, the wind-resistant contact rod 25 moves towards the rectifier plate B2102, adjusting the contact distance between the wind-resistant contact rod 25 and the trigger plate 27. When the wind-resistant contact rod 25 moves towards the trigger plate 27, its inclined contact rod interacts with the inclined surface of the wind-resistant contact rod 25, pushing the trigger plate 27 to move. Its internal spring is compressed to store elastic potential energy, and the movable slot 28 moves in coordination. The movement drives the movable rod 23 inside to slide, causing the guide fins 22 to deflect synchronously in the direction of movement of the trigger plate 27, and the deflection angle increases. The inclined surface of the wind-resistant contact rod 25 is set towards the guide fins 22. The bottom of the side of the rectifier plate B2102 near the rectifier plate A2101 is fixedly connected to the limiting groove 26. The trigger plate 27 is slidably inserted in the limiting groove 26. The trigger plate 27 has a movable groove 28, and the movable rod 23 is slidably connected in the movable groove 28. It also includes a second component for multi-directional adsorption function.

[0024] The rectifier plate A2101 is located at the air inlet of the adsorption chamber 14. Multiple sets of air vents are arranged on both the rectifier plate A2101 and the rectifier plate B2102, and the air vents are enlarged. There is a gap between the rectifier plate A2101 and the rectifier plate B2102.

[0025] The guide fin 22 is initially inclined to the rectifier plate A2101. The outer surface of the guide fin 22 is arc-shaped. The movable rod 23 is composed of a protrusion and a column rod at the bottom on the side away from the protrusion. The wind-resistant contact rod 25 is composed of a sliding rod and a right-angled triangle. The triangle is located between the rectifier plate A2101 and the rectifier plate B2102 and is close to the inner wall of the adsorption chamber 14.

[0026] A contact rod is fixedly connected to one end of the trigger plate 27 near the wind-resistant contact rod 25, and it abuts against the inclined surface of the wind-resistant contact rod 25. A spring is fixedly connected to one end of the trigger plate 27 away from the wind-resistant contact rod 25, and the other end of the spring is fixedly connected to the limiting groove 26. Multiple movable grooves 28 are equally spaced and the number is the same as that of the guide fins 22.

[0027] A further embodiment: Please refer to Figures 8 to 11 As shown: The second component includes an adsorption layer 31 disposed at the outlet end of the adsorption chamber 14. The adsorption layer 31 is filled with honeycomb activated carbon for adsorbing the waste gas emitted from the second component. A positioning shell 32 is disposed on the side of the adsorption layer 31 near the adsorption chamber 14. The positioning shell 32 is fixedly connected to the adsorption layer 31 by a fixing rod. An assisting baffle 33 is symmetrically fixedly connected inside the positioning shell 32. A porous rotating shell 34 is rotatably connected to the outer ring of the positioning shell 32. A turning column 35 is slidably connected to the side of the positioning shell 32 away from the adsorption layer 31. An arc plate 36 is fixedly connected to the end of the turning column 35 away from the center of the positioning shell 32. The inner arc surface of the arc plate 36 slides against the outer arc surface of the positioning shell 32. Two sets of turning columns 35 are symmetrically arranged around the central axis of the arc plate 36. A fan-shaped carrier 37 is fixedly connected to the end of the arc plate 36 away from the turning column 35. A spiral guide 38 is fixedly connected to the center of the positioning shell 32. It also includes a third component for mortising activated carbon to prevent adsorption of hollow structures.

[0028] The positioning shell 32 is a cylindrical cover with symmetrical turning grooves on both sides. The positioning shell 32 is hollow. The auxiliary stop 33 is composed of an L-shaped rod and a triangular body. The triangular body in the auxiliary stop 33 and the turning groove on the positioning shell 32 are on the same straight line.

[0029] The porous rotating shell 34 is driven to rotate by a drive assembly installed at the center of the positioning shell 32. The porous rotating shell 34 rotates around the positioning shell 32, and the arc plate 36 connected inside the porous rotating shell 34 moves around the positioning shell 32 in coordination. When the adjusting column 35 slides along the adjusting grooves opened on both sides of the positioning shell 32, with the cooperation of the assisting baffle 33 and the adjusting groove, the adjusting groove restricts one of the adjusting columns 35, while the other flips along the assisting baffle 33. In this way, with one of the adjusting columns 35 as the axis, it performs a 180-degree flipping motion, thereby enabling the arc plate 36 to complete the flipping operation, so that the fan-shaped carrier 37 flips on both sides, avoiding insufficient adsorption on the side away from the air inlet end and improving the utilization rate of activated carbon. The arc plate 36 is composed of an arc plate and a connecting rod. The rotating column 35, the arc plate 36, and the fan-shaped carrier 37 are all arranged in six sets around the positioning shell 32. The fan-shaped carrier 37 is arranged in a fan-shaped hollow shape. The fan-shaped carrier 37 is equipped with honeycomb activated carbon. The spiral guide fluid 38 is composed of a hollow tube and a spiral guide body inside the tube. The exhaust gas flows along the spiral guide fluid 38 and is transported to the side wall of the fan-shaped carrier 37 for contact and adsorption with the activated carbon inside the tube under the cooperation of the spiral guide body and the hollow tube.

[0030] The third component includes a pressure plate 41 slidably connected within the sector-shaped carrier 37. Guide tubes 42 are fixedly connected to all four sides of the side of the pressure plate 41 away from the sector-shaped carrier 37. Two limiting holes 43 are symmetrically opened on the outer circumference of each guide tube 42. A fixed pressure plate 44 is provided at the end of the guide tube 42 away from the pressure plate 41. The fixed pressure plate 44 is fixedly connected to the sector-shaped carrier 37. Insertion posts 45 are fixedly connected to all four sides of the side of the fixed pressure plate 44 near the guide tube 42. A compression spring 46 is fixedly connected to the end of each insertion post 45 near the guide tube 42. The outer ring is symmetrically fixed with guide posts 47, which are slidably connected in the limiting hole 43. Insertion post 45 and compression spring 46 are inserted into guide tube 42. The compression spring 46 is initially in a compressed state. When the activated carbon loaded in the fan-shaped carrier 37 settles and voids appear due to long-term use, and forms a short-circuit channel for airflow after pulverization, the compression spring 46 pushes the pressure plate 41 towards the activated carbon inside the fan-shaped carrier 37 under the action of the restoring force, and presses it to ensure that the pressure plate 41 is tightly attached to the surface of the activated carbon layer, ensuring that the activated carbon layer is dense and uniform, and improving the adsorption stability.

[0031] The pressure plate 41 and the fixed pressure plate 44 have the same shape and are both snapped into and adapted to the inside of the fan-shaped carrier 37. Both the pressure plate 41 and the fixed pressure plate 44 have multiple sets of ventilation holes at equal intervals.

[0032] The working principle of all the content in the above embodiments is as follows: During use, the waste gas generated during the printing and drying process of pharmaceutical packaging film is first transported in an orderly manner through the printing machine 11, dryer 12, waste gas treatment equipment 13, and adsorption chamber 14 connected in sequence in the device. The adsorption chamber 14 adopts a dual-tank alternating structure, which can realize continuous waste gas treatment and avoid interruption of the treatment process when a single tank is saturated, thus ensuring the continuity of treatment. The waste gas treatment equipment 13 and the dryer 12 are connected by an external pipeline to ensure that the waste gas is leak-free and transported smoothly. Finally, the waste gas enters the adsorption chamber 14 for subsequent core treatment.

[0033] To ensure uniform distribution of exhaust gas as it enters subsequent treatment stages, a rectifier plate A2101 is installed at the inlet of the adsorption chamber 14. This rectifier plate guides the exhaust gas smoothly into the chamber, preventing it from directly impacting internal components and causing airflow turbulence. After entering the adsorption chamber 14, the exhaust gas first passes through the rectifier plates A2101 and B2102, which are fixedly connected inside the chamber. These two plates provide the foundation for initial uniform flow, maintaining a certain distance between them. Both plates are coated with an anti-stick coating to prevent impurities and ink residue from adhering to the surface and clogging the vents, thus ensuring uniform flow. Simultaneously, sealing strips are installed around the rectifier plates A2101 and B2102 and between them and the inner wall of the adsorption chamber 14. This ensures that all exhaust gas flows through the vents on these plates, preventing airflow short-circuiting and guaranteeing uniform flow.

[0034] Both rectifier plate A2101 and rectifier plate B2102 have multiple sets of enlarged expansion-type vent holes arranged on them. When the exhaust gas passes through these expansion-type vent holes, it achieves preliminary uniform airflow distribution, so that the airflow can enter the subsequent airflow adaptive adjustment stage evenly, laying the foundation for subsequent airflow dispersion and adsorption treatment.

[0035] When performing adaptive flow equalization adjustment of air volume: When the exhaust gas is transported and generates wind: the airflow pushes the wind-resistant contact rod 25, causing it to move towards the rectifier plate B2102. Its inclined surface interacts with the inclined surface of the contact rod on the trigger plate 27, pushing the trigger plate 27 away from the wind-resistant contact rod 25. At this time, the spring inside the trigger plate 27 is compressed, storing elastic potential energy to prepare for resetting when the wind force decreases. Simultaneously, the trigger plate 27 drives the movable slot 28 to move in tandem. Since the movable rod 23 is slidably connected within the movable slot 28, the movement of the movable slot 28 drives the movable rod 23 to slide, thereby causing the guide fins 22 to deflect synchronously in the direction of the trigger plate 27. Increased wind force causes the guide fins 22 to... The greater the change in deflection angle, the more it gradually becomes perpendicular to the rectifier plate A2101, reducing the resistance of the flow channel, preventing excessive wind force from being blocked by the fins, improving wind flow efficiency, avoiding airflow pressure increase and fan overload, and ensuring exhaust gas flow. At the same time, the deflection of the guide fins 22, through obstruction and staggered guidance, results in a smaller change in the deflection angle of the guide fins 22 as the wind force decreases. They are staggered and inclined, and a larger angle can prevent uneven airflow distribution due to low wind speed, ensuring that the airflow can be fully dispersed and evenly penetrate the subsequent activated carbon layer, avoiding local unutilized activated carbon and improving the activated carbon utilization and adsorption rate. Under the triggering of different exhaust gas wind forces, the deflection angle of the guide fins 22 is adaptively adjusted to match the wind force.

[0036] After the exhaust gas passes through the first component for equalization, it enters the positioning shell 32 structure connected to the adsorption layer 31 by a fixed rod. The spiral guide 38 fixedly connected at the center of the positioning shell 32 guides the exhaust gas to flow along its interior. With the cooperation of the spiral guide and the hollow tube, the exhaust gas is evenly transported to the side wall and interior of the fan-shaped carrier 37, and fully contacts the honeycomb activated carbon inside the fan-shaped carrier 37 to achieve adsorption. To improve the utilization rate of activated carbon and avoid insufficient adsorption on the side of the fan-shaped carrier 37 away from the air inlet, the second component achieves the flipping of the fan-shaped carrier 37 through the following structure: a porous rotating shell 34 rotatably connected to the outer ring of the positioning shell 32 rotates around the positioning shell 32 under the drive of the drive component at its center, driving the arc plate 36 rotatably connected inside the porous rotating shell 34 to move synchronously around the positioning shell 32; the end of the arc plate 36 away from the adjusting column 35 is fixedly connected to the adjusting column 35, which slides along the adjusting grooves symmetrically opened on both sides of the positioning shell 32. When the adjusting column 35 slides to the position of the assisting baffle 33, the adjusting groove restricts one of the adjusting columns 35, and the other adjusting column 35 flips along the assisting baffle 33. With the restricted adjusting column 35 as the axis, the arc plate 36 and the fan-shaped carrier 37 complete a 180-degree flip, so that the two sides of the fan-shaped carrier 37 alternately face the air inlet, ensuring that the honeycomb activated carbon in the fan-shaped carrier 37 is evenly utilized and improving the adsorption efficiency. Among them, six sets of rotating columns 35, arc plates 36, and fan-shaped carriers 37 are arranged around the positioning shell 32. The fan-shaped carriers 37 are fan-shaped and hollow, which can increase the contact area between the exhaust gas and the activated carbon. The waste gas after being adsorbed by the above components, or the waste gas that has partially escaped, passes through the adsorption layer 31, where the activated carbon filled inside the layer performs secondary adsorption on the waste gas to intercept harmful substances in the waste gas. Furthermore, to prevent the honeycomb activated carbon in the fan-shaped carrier 37 from settling and pulverizing during long-term use, thus creating a short-circuit channel for airflow and ensuring adsorption stability, a third component of the device works in concert: In the third component, a pressure plate 41 is slidably connected to the fan-shaped carrier 37, and a guide tube 42 is fixedly connected to the four sides of the side of the pressure plate 41 away from the fan-shaped carrier 37. This guide tube 42 is inserted into and cooperates with the insertion post 45 and compression spring 46 on the fixed pressure plate 44 fixedly connected to the fan-shaped carrier 37. The guide post 47 on the insertion post 45 is slidably connected to the limiting hole 43 on the outer ring of the guide tube 42 to ensure the stable sliding of the pressure plate 41. The compression spring 46 is initially in a compressed state. When the activated carbon in the fan-shaped carrier 37 settles and gaps appear, the compression spring 46 releases its restoring force, pushing the pressure plate 41 towards the activated carbon to press the activated carbon, ensuring that the pressure plate 41 is tightly attached to the surface of the activated carbon layer, keeping the activated carbon layer dense and uniform, avoiding airflow short-circuiting, and ensuring the stability of the adsorption process. Among them, the pressure plate 41 and the fixed pressure plate 44 have the same shape and are both fitted into the fan-shaped carrier 37. The multiple sets of ventilation holes on both ensure that the exhaust gas can pass through smoothly and come into contact with the activated carbon.

[0037] Please refer to the above work process. Figures 1 to 11 .

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment device for printing and drying pharmaceutical packaging films, comprising: The printing press (11), dryer (12), waste gas treatment equipment (13), adsorption chamber (14) and first component installed thereon are connected in sequence, characterized in that: the adsorption chamber (14) is a double tank alternating structure, the waste gas treatment equipment (13) and the dryer (12) are connected by an external pipe, and the first component includes: rectifier plate A (2101) and rectifier plate B (2102) fixedly connected inside the adsorption chamber (14); The first component also includes: a flow guide fin (22) disposed between rectifier plate A (2101) and rectifier plate B (2102), wherein multiple sets of the flow guide fin (22) are equidistantly and intermittently arranged, the flow guide fin (22) is rotatably connected to the adsorption chamber (14), and a movable rod (23) is fixedly connected to the bottom of the flow guide fin (22) near the side of rectifier plate B (2102), and a limit tube (24) is fixedly connected to the bottom of rectifier plate A (2101). A wind-resistant contact rod (25) is slidably inserted into the limiting tube (24). The inclined surface of the wind-resistant contact rod (25) faces the guide fin (22). A limiting groove (26) is fixedly connected to the bottom of the side of the rectifier plate B (2102) close to the rectifier plate A (2101). A trigger plate (27) is slidably inserted into the limiting groove (26). A movable groove (28) is opened on the trigger plate (27). The movable rod (23) is slidably connected in the movable groove (28). It also includes a second component for multi-directional adsorption function.

2. The waste gas treatment device for printing and drying pharmaceutical packaging films according to claim 1, characterized in that: The rectifier plate A (2101) is located at the air inlet of the adsorption chamber (14). Multiple sets of air vents are arranged on both the rectifier plate A (2101) and the rectifier plate B (2102), and the air vents are enlarged. There is a gap between the rectifier plate A (2101) and the rectifier plate B (2102).

3. The waste gas treatment device for printing and drying pharmaceutical packaging films according to claim 1, characterized in that: The guide fins (22) are initially inclined to the rectifier plate A (2101). The outer surface of the guide fins (22) is arc-shaped. The movable rod (23) is composed of a protrusion and a column rod at the bottom on the side away from the protrusion. The wind-resistant contact rod (25) is composed of a sliding rod and a right-angled triangle. The triangle is located between the rectifier plate A (2101) and the rectifier plate B (2102) and is close to the inner wall of the adsorption chamber (14).

4. The waste gas treatment device for printing and drying pharmaceutical packaging films according to claim 1, characterized in that: The trigger plate (27) is fixedly connected to an abutment rod at one end near the wind-resistant contact rod (25), which abuts against the inclined surface of the wind-resistant contact rod (25). The trigger plate (27) is fixedly connected to a spring at one end away from the wind-resistant contact rod (25), and the other end of the spring is fixedly connected to the limiting groove (26). The movable groove (28) is provided with multiple grooves at equal intervals, which is consistent with the number of guide fins (22).

5. The waste gas treatment device for printing and drying pharmaceutical packaging films according to claim 1, characterized in that: The second component includes an adsorption layer (31) disposed at the outlet end of the adsorption chamber (14). A positioning shell (32) is disposed on the side of the adsorption layer (31) near the adsorption chamber (14). The positioning shell (32) is fixedly connected to the adsorption layer (31) by a fixing rod. An assisting baffle (33) is symmetrically fixedly connected inside the positioning shell (32). A porous rotating shell (34) is rotatably connected to the outer ring of the positioning shell (32). The side of the positioning shell (32) away from the adsorption layer (31) slides. A rotating column (35) is connected to the positioning shell (32). An arc plate (36) is fixedly connected to one end of the rotating column (35) away from the center of the positioning shell (32). The inner arc surface of the arc plate (36) slides against the outer arc surface of the positioning shell (32). Two sets of rotating columns (35) are symmetrically arranged with the central axis of the arc plate (36) as the center. A fan-shaped carrier (37) is fixedly connected to one end of the arc plate (36) away from the rotating column (35). A spiral guide fluid (38) is fixedly connected to the center of the positioning shell (32). It also includes a third component for mortising activated carbon to prevent adsorption of hollow structures.

6. The waste gas treatment device for printing and drying pharmaceutical packaging films according to claim 5, characterized in that: The positioning shell (32) is a cylindrical cover. The positioning shell (32) has symmetrical turning grooves on both sides. The positioning shell (32) is hollow. The auxiliary stop (33) is composed of an L-shaped rod and a triangular body. The triangular body in the auxiliary stop (33) and the turning groove on the positioning shell (32) are on the same straight line.

7. The waste gas treatment device for printing and drying pharmaceutical packaging films according to claim 5, characterized in that: The porous rotating shell (34) is driven to rotate by a drive assembly installed at the center of the positioning shell (32). The arc plate (36) is composed of an arc plate and a connecting rod. The rotating column (35), the arc plate (36), and the fan-shaped carrier (37) are arranged in six sets around the positioning shell (32). The fan-shaped carrier (37) is arranged in a fan-shaped hollow shape. The fan-shaped carrier (37) is equipped with honeycomb activated carbon. The spiral guide fluid (38) is composed of a hollow tube and a spiral guide body inside the tube.

8. The waste gas treatment device for printing and drying pharmaceutical packaging films according to claim 5, characterized in that: The third component includes a pressure plate (41) slidably connected within the fan-shaped carrier (37). Guide tubes (42) are fixedly connected to all four sides of the side of the pressure plate (41) away from the fan-shaped carrier (37). Two limiting holes (43) are symmetrically opened on the outer ring of each guide tube (42). A fixed pressure plate (44) is provided at the end of the guide tube (42) away from the pressure plate (41). The fixed pressure plate (44) is fixedly connected to the fan-shaped carrier (37) and is located near the guide tube. (42) has plug-in pins (45) fixedly connected around one side. A compression spring (46) is fixedly connected to one end of the plug-in pin (45) near the guide tube (42). A guide pin (47) is symmetrically fixedly connected to the outer ring of the plug-in pin (45) near the compression spring (46). The guide pin (47) is slidably connected in the limiting hole (43). The plug-in pin (45) and the compression spring (46) are inserted into the guide tube (42). The compression spring (46) is initially in a compressed state.

9. The waste gas treatment device for printing and drying pharmaceutical packaging films according to claim 8, characterized in that: The pressure plate (41) and the fixed pressure plate (44) have the same shape and are both fitted into the inside of the fan-shaped carrier (37). Both the pressure plate (41) and the fixed pressure plate (44) have multiple sets of ventilation holes at equal intervals.

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