Air purification device for corrugated paper production

Abstract

The invention relates to the technical field of air purification, and discloses an air purification device for corrugated paper production, which comprises a conical tank, a vertical sleeve is arranged at the top of the conical tank, an air inlet pipe is arranged on the outer side of the vertical sleeve along the tangential direction, and the air inlet pipe is used as a basic structure of a cyclone separator and is used for separating fixed body impurities; the purification tank is arranged at the top of the vertical sleeve, an exhaust pipe is arranged at the bottom of the purification tank, the bottom end of the exhaust pipe downwards extends into the conical tank, and an air outlet pipe is fixedly arranged on the outer side of the purification tank; the spraying disc is used for spraying reaction liquid, is arranged in the purification tank and is positioned below the gas outlet pipe. The air purification device for corrugated paper production can effectively solve the problem that in the prior art, a filter screen is prone to blockage and needs to be frequently shut down for maintenance.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, specifically to an air purification device for corrugated paper production. Background Technology

[0002] During the corrugated paper production process, steps such as corrugating, gluing, and slitting generate a large amount of pollutants and particulate matter containing paper scraps, volatile adhesives, and fine dust. To ensure a hygienic production environment and the health of employees, air purification devices are typically used for centralized air treatment within the factory.

[0003] In related technologies, for example, the prior art patent with publication number CN117379961B provides an air purification device for corrugated paper production. This device uses a coarse filter and a fine filter at the air inlet to perform dry physical interception of larger impurities and fine particulate matter in the air; then, a reaction liquid is sprayed out through a spray frame, and a drive motor drives a stirring plate to rotate, so that the air and the reaction liquid are fully mixed for air washing and purification to remove harmful gases; finally, the reaction waste liquid after use is collected uniformly through a collection box at the bottom.

[0004] However, impurities in the corrugated paper production environment (especially sticky paper scraps, glue-cured particles, etc.) are very easy to adhere to and clog the filter pores when passing through the dry coarse and fine filters. This will cause the equipment's air resistance to increase rapidly and the purification efficiency to drop sharply. Frequent shutdowns are required for manual cleaning or filter replacement, which seriously affects the continuous operation efficiency of the production line. Summary of the Invention

[0005] Technical problems to be solved In view of the above-mentioned shortcomings of the prior art, the present invention provides an air purification device for corrugated paper production, which can effectively solve the problem of easy clogging of the filter and the need for frequent shutdown for maintenance in the prior art.

[0006] Technical solution To achieve the above objectives, the present invention provides the following technical solution: This invention provides an air purification device for corrugated paper production, comprising: A conical tank, with a vertical sleeve fixedly installed at the top and an air inlet pipe fixedly installed tangentially on the outside of the vertical sleeve, serves as the basic structure of a cyclone separator for separating fixed impurities; A purification tank is fixedly installed on the top of a vertical sleeve. An exhaust pipe is fixedly installed at the bottom of the purification tank. The bottom end of the exhaust pipe extends downward into the interior of the conical tank. An air outlet pipe is fixedly installed on the outside of the purification tank. The spray plate used for spraying the reaction liquid is fixedly installed inside the purification tank and located below the gas outlet pipe. The turbulence-inducing component, located inside the purification tank and below the spray plate, is used to turbulent the air and the reaction liquid to fully mix and react. The separation component, fixedly installed at the bottom of the conical tank, is used to separate the reaction liquid from solid impurities.

[0007] Furthermore, several spray plates are arranged axially inside the purification tank. Each spray plate has an arc-shaped liquid cavity at its bottom. The arc-shaped liquid cavities are evenly distributed radially along the spray plate and are arranged in a circumferential array around the axis of the spray plate. Each arc-shaped liquid cavity has a nozzle at its bottom. A vent hole is opened between two adjacent arc-shaped liquid cavities on the inner side of the spray plate. A diversion pipe for conveying the reaction liquid into the several spray plates is fixedly installed on the side wall of the purification tank. A conical surface is provided between the inner wall of the purification tank and the top of the exhaust pipe.

[0008] Furthermore, the turbulence assembly includes a high-speed shaft that extends through the inside of the spray plate, a sealing cover that is rotatably disposed on the outside of the high-speed shaft, the sealing cover being disposed on the top of the purification tank, a motor for driving the high-speed shaft to rotate being disposed on the top of the sealing cover, and perforated plates arranged in an array on the outside of the high-speed shaft.

[0009] Furthermore, a gas-gathering hood is provided at the bottom of the sealing cover via a fixed column, and a retaining ring is provided at the bottom of the sealing cover outside the gas-gathering hood. The gas-gathering hood is sealed to the inner wall of the purification tank, and the gas-gathering hood is located at the bottom of the gas outlet pipe. A return pipe is fixedly provided on the side wall of the purification tank.

[0010] Furthermore, the separation assembly includes a separation cylinder installed at the bottom of the conical tank, a filter element is provided on the side wall at the lower end of the separation cylinder, a discharge port is provided on the side wall at the upper end of the separation cylinder, a rotating sleeve is rotatably provided inside the separation cylinder, and a spiral scraper is provided on the outside of the rotating sleeve for conveying and discharging solid impurities deposited at the bottom upwards.

[0011] Furthermore, a conveying pipe is provided at the bottom of the conical tank, and a discharge port A is opened at the bottom of the conveying pipe; The rotating sleeve is rotatably disposed on the outside of the conveying pipe. An end cap is provided at the bottom of the rotating sleeve. The end cap is rotatably disposed at the bottom of the separation cylinder. A discharge port B is opened on the side wall of the rotating sleeve corresponding to the discharge port A. A drive shaft is coaxially disposed on the top of the end cap. A low-speed shaft is connected to the bottom of the high-speed shaft via a reducer. The low-speed shaft is coaxially connected to the drive shaft. The reducer is located inside the purification tank.

[0012] Furthermore, a sleeve is fitted around the outside of the separating cylinder, and a conical sleeve is provided at the top of the sleeve. The conical sleeve is located outside the separating cylinder and above the filter element; a collecting cylinder is provided outside the conical sleeve through a fixing plate. The bottom of the separation cylinder is provided with a bottom plate, and the top of the bottom plate is provided with a drain hole on the outside of the separation cylinder. The bottom plate is provided on the top of the collection tank, and the collection tank is located at the bottom of the collection cylinder. The drain hole is connected to the inside of the collection tank.

[0013] Furthermore, an annular liquid cavity is fixedly provided between the conical tank and the vertical sleeve. An overflow plate is fixedly provided inside the annular liquid cavity on the side near the vertical sleeve. A liquid supply pipe is fixedly provided on the outside of the annular liquid cavity. An air guide sleeve is fixedly provided at the bottom of the vertical sleeve. A liquid gap is formed between the bottom of the air guide sleeve and the conical tank.

[0014] Furthermore, a circulation pump is fixedly installed on the outside of the collection tank. The input end of the circulation pump is connected to the inside of the collection tank. A three-way valve is installed at the output end of the circulation pump. A lift pipe and a discharge pipe are respectively installed at the two output ends of the three-way valve. The other end of the lift pipe is connected to the liquid supply pipe. A liquid level detector is installed on the side wall of the collection tank, and a connecting pipe is installed on the top of the collection tank, with the other end of the connecting pipe connected to the return pipe.

[0015] Furthermore, a sliding sleeve is fitted on the outside of the collection tube, and a hook is rotatably mounted on the outside of the sliding sleeve. A fixing pin is provided on the outside of the collection tube, and the fixing pin is located above the sliding sleeve for attaching the hook.

[0016] Beneficial effects The technical solution provided by this invention has the following advantages compared with the prior art: This invention utilizes a conical tank, a vertical sleeve, and an air inlet pipe to form the basic structure of a cyclone separator. Combined with a purification tank and its internal spray plate and turbulence-inducing components, the air in the corrugated paper production area can continuously separate solid impurities during purification. The separated air then comes into contact with the reaction liquid through the spray plate and turbulence-inducing components for further purification. This ensures the purification effect of the air in the corrugated paper production environment, and the continuous purification process eliminates the need for frequent shutdowns for maintenance, reducing subsequent maintenance costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall exploded structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the purification tank according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the turbulence-disrupting component according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the mating structure of the conical tank and the separation component according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the conical tank according to an embodiment of the present invention; Figure 7 This is a partial cross-sectional structural diagram of an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the separation component according to an embodiment of the present invention; Figure 9 for Figure 3 Enlarged structural diagram at point A; Figure 10 for Figure 5 Enlarged structural diagram at point B; Figure 11 for Figure 7 Enlarged structural diagram at point C; Figure 12 for Figure 7 A magnified structural diagram at point D.

[0019] The labels in the diagram represent: 1. Conical tank; 11. Vertical sleeve; 12. Air inlet pipe; 13. Material conveying pipe; 14. Discharge port A; 15. Annular liquid chamber; 16. Liquid supply pipe; 17. Overflow plate; 18. Air guide sleeve; 2. Purification tank; 21. Exhaust pipe; 22. Gas outlet pipe; 23. Diverter pipe; 24. Return pipe; 25. Conical surface; 3. Spray plate; 31. Arc-shaped liquid chamber; 32. Nozzle; 33. Vent hole; 4. Aerodynamic components; 41. High-speed shaft; 42. Sealing cover; 43. Motor; 44. Perforated plate; 45. Fixing column; 46. Air-concentrating shroud; 47. Retaining ring; 48. Reducer; 49. Low-speed shaft; 5. Separation assembly; 51. Separation cylinder; 52. Filter element; 53. Discharge port; 54. Rotating sleeve; 55. Spiral scraper; 56. End cap; 57. Drive shaft; 58. Discharge port B; 59. Sleeve; 510. Conical sleeve; 511. Fixing plate; 512. Collection cylinder; 513. Bottom plate; 514. Drain hole; 515. Collection tank; 516. Sliding sleeve; 517. Hook; 518. Fixing pin; 519. Circulation pump; 520. Lifting pipe; 521. Three-way valve; 522. Discharge pipe; 523. Liquid level detector; 524. Connecting pipe. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to embodiments.

[0022] Please see Figure 1 - Figure 12 This invention provides a technical solution: an air purification device for corrugated paper production, comprising a conical tank 1, a purification tank 2, a spray plate 3, a turbulence assembly 4, and a separation assembly 5. A vertical sleeve 11 is fixedly installed at the top of the conical tank 1, and an air inlet pipe 12 is fixedly installed tangentially on the outer side of the vertical sleeve 11, serving as the basic structure of a cyclone separator for separating solid impurities. The purification tank 2 is fixedly installed at the top of the vertical sleeve 11, and an exhaust pipe 21 is fixedly installed at the bottom of the purification tank 2, with the bottom end of the exhaust pipe 21 extending downwards into the interior of the conical tank 1. An air outlet pipe 22 is fixedly installed on the outer side of the purification tank 2. The spray plate 3, used for spraying the reaction liquid, is fixedly installed inside the purification tank 2 and located below the air outlet pipe 22. The turbulence assembly 4 is installed inside the purification tank 2 and located below the spray plate 3, used to agitate the air and ensure thorough mixing and reaction of the reaction liquid. The separation assembly 5 is fixedly installed at the bottom of the conical tank 1, used to separate the reaction liquid from solid impurities.

[0023] During operation, the air purification device is connected to the exhaust system of the corrugated paper production site. An external fan draws air from the production site into the conical tank 1. The air is guided through the inlet pipe 12 and enters tangentially along the vertical sleeve 11, flowing spirally inside the conical tank 1 (referencing the principle of a cyclone separator). At this time, the spiral airflow carrying solid impurities (paper scraps, dust, etc.) sweeps downwards. Under centrifugal force, the solid impurities are thrown against the inner wall of the conical tank 1 and converge downwards along the constricted structure of the tank, entering the separation component 5. Meanwhile, the air (containing small particulate impurities, such as dust) enters the purification tank 2 through the exhaust pipe 21. At this time, a reaction liquid is introduced into the spray plate 3 via external equipment. As the reaction liquid is sprayed downwards, it reacts with the upward-moving air. The reaction liquid dissolves harmful gases (VOCs, formaldehyde, etc.) in the air, and also carries a large amount of fine paper dust, glue solidification particles, dust and other impurities. Finally, the mixture of reaction liquid and fine impurities flows downward into the conical tank 1, and then enters the separation component 5 through the bottom of the conical tank 1. This mixture is usually classified as "hazardous waste" or high-concentration industrial wastewater, and the treatment cost is high. By separating the solid impurities through the separation component 5, the treatment cost and difficulty of the clear liquid will decrease exponentially. In addition, during the reaction process between the reaction liquid and the air, the air is continuously disturbed by the turbulence component 4 inside the purification tank 2, so that the air and the reaction liquid can fully contact and react to ensure the air purification effect. Moreover, the purification device can operate continuously without frequent shutdowns for maintenance, reducing maintenance costs.

[0024] To ensure air purification, several spray plates 3 are arranged axially inside the purification tank 2. Each spray plate 3 has an arc-shaped liquid cavity 31 at its bottom. The arc-shaped liquid cavities 31 are evenly distributed radially along the spray plate 3 and are arranged in a circumferential array around the axis of the spray plate 3. Each arc-shaped liquid cavity 31 has a nozzle 32 at its bottom. A vent hole 33 is opened between two adjacent arc-shaped liquid cavities 31 on the inner side of the spray plate 3. A diversion pipe 23 for conveying the reaction liquid into the several spray plates 3 is fixedly installed on the side wall of the purification tank 2. A conical surface 25 is provided between the inner wall of the purification tank 2 and the top of the exhaust pipe 21.

[0025] The reaction liquid is supplied to the inside of the distribution pipe 23 by an external liquid supply device, and then distributed to the inside of each spray plate 3. The spray plate 3 connects several arc-shaped liquid chambers 31 through its inner cavity, so that each arc-shaped liquid chamber 31 is filled with reaction liquid. Finally, under pressure, it is sprayed downward through the nozzle 32. At this time, the air flows upward and can fully contact the reaction liquid. After passing through the bottom arc-shaped liquid chamber 31 through the vent 33, the air can continue to purify the air by being sprayed with reaction liquid through the upper spray plate 3. The vent 33 not only ensures the smooth flow of air... The airflow is dispersed, and the upper reaction liquid flows downward through the vents 33, allowing it to re-react with the air passing through the vents 33, ensuring air purification quality. Furthermore, the turbulence assembly 4 includes a high-speed shaft 41 extending through the inside of the spray plate 3. A sealing cover 42 is rotatably mounted on the outside of the high-speed shaft 41 and fixedly mounted on the top of the purification tank 2. A motor 43 for driving the high-speed shaft 41 is fixedly mounted on the top of the sealing cover 42. Perforated plates 44 are arrayed on the outside of the high-speed shaft 41. The motor 43 drives the high-speed shaft 41 to rotate at high speed inside the sealing cover 42, causing the high-speed shaft 41 to rotate the outer perforated plates 44. The perforated plates 44 turbulently disperse the air entering the purification tank 2, increasing the contact time between the air and the reaction liquid inside the purification tank 2.

[0026] When the reaction liquid is sprayed out in a mist, in order to prevent the air from carrying away the atomized reaction liquid, a gas-gathering hood 46 is fixedly installed at the bottom of the sealing cover 42 by a fixing column 45. A retaining ring 47 is fixedly installed at the bottom of the sealing cover 42 outside the gas-gathering hood 46. The gas-gathering hood 46 is sealed to the inner wall of the purification tank 2, and the gas-gathering hood 46 is located at the bottom of the air outlet pipe 22. A return pipe 24 is fixedly installed on the side wall of the purification tank 2.

[0027] After being purified by several layers of spray plates 3, the air continues to flow upward. At this time, under the gathering effect of the air-gathering hood 46, the air flows towards the bottom of the sealing cover 42. Finally, the atomized reaction liquid gathers at the bottom of the sealing cover 42 and drips down in the form of droplets. Furthermore, the airflow in the horizontal direction is blocked by the baffle ring 47. By changing the airflow path, the atomized reaction liquid carried by the air gathers at the bottom of the sealing cover 42 and inside the baffle ring 47. The reaction liquid gathered inside the baffle ring 47 drips down and is located outside the air-gathering hood 46. Finally, it is discharged through the return pipe 24 on the side wall of the purification tank 2, preventing the reaction liquid from entering the interior of the exhaust pipe 22 and being discharged into the atmosphere.

[0028] Based on the above embodiments, in order to separate the reaction liquid from the solid impurities, the separation assembly 5 includes a separation cylinder 51 fixedly installed at the bottom of the conical tank 1. A filter element 52 is provided on the side wall at the lower end of the separation cylinder 51, and a discharge port 53 is provided on the side wall at the upper end of the separation cylinder 51. A rotating sleeve 54 is rotatably provided inside the separation cylinder 51, and a spiral scraper 55 is fixedly provided on the outside of the rotating sleeve 54 for conveying the solid impurities deposited at the bottom upwards and discharging them.

[0029] Specifically, a conveying pipe 13 is fixedly installed at the bottom of the conical tank 1, and a discharge port A14 is opened at the bottom of the conveying pipe 13; a rotating sleeve 54 is rotatably installed on the outside of the conveying pipe 13, and an end cover 56 is fixedly installed at the bottom of the rotating sleeve 54. The end cover 56 is rotatably installed at the bottom of the separation cylinder 51, and a discharge port B58 is opened on the side wall of the rotating sleeve 54 corresponding to the discharge port A14. A drive shaft 57 is coaxially fixedly installed on the top of the end cover 56; a low-speed shaft 49 is linked to the bottom of the high-speed shaft 41 through a reducer 48. The low-speed shaft 49 is coaxially connected to the drive shaft 57, and the reducer 48 is fixedly installed inside the purification tank 2.

[0030] When the motor 43 drives the high-speed shaft 41 to rotate at high speed, the high-speed shaft 41 drives the low-speed shaft 49 to rotate slowly through the reducer 48. At this time, the low-speed shaft 49 drives the rotating sleeve 54 to rotate outside the conveying pipe 13 through the drive shaft 57. After the mixture inside the conical tank 1 enters the conveying pipe 13, it enters the space between the rotating sleeve 54 and the separation cylinder 51 through the discharge port A14 at the bottom of the conveying pipe 13 and the discharge port B58 on the outside of the rotating sleeve 54. Under the rotation of the rotating sleeve 54, the spiral scraper 55 can be driven to stir the mixture, preventing fixed impurities from adhering to the filter surface of the filter element 52. As impurities accumulate between the separation cylinder 51 and the rotating sleeve 54, the spiral scraper 55 driven by the rotating sleeve 54 can lift the impurities below to the discharge port 53 for discharge, thus achieving the effect of continuous solid-liquid separation.

[0031] To facilitate the collection of the separated solids and liquids, a sleeve 59 is fitted around the outside of the separation cylinder 51. A conical sleeve 510 is fixedly installed on the top of the sleeve 59. The conical sleeve 510 is fixedly installed on the outside of the separation cylinder 51 and above the filter element 52. A collection cylinder 512 is fixedly installed on the outside of the conical sleeve 510 through a fixing plate 511. A bottom plate 513 is fixedly installed at the bottom of the separation cylinder 51. A drain hole 514 is opened on the top of the bottom plate 513 on the outside of the separation cylinder 51. The bottom plate 513 is fixedly installed on the top of the collection tank 515. The collection tank 515 is located at the bottom of the collection cylinder 512. The drain hole 514 communicates with the inside of the collection tank 515. When solid impurities are lifted to the height of the discharge port 53 by the spiral scraper 55, they fall into the collection cylinder 512 through the discharge port 53. The inner side of the collection cylinder 512 is isolated from the separation cylinder 51 by the sleeve 59 and the conical sleeve 510, thus achieving the effect of separate collection of solid impurities. The liquid filtered by the filter element 52 flows into the collection tank 515 through the drain hole 514 for collection. Specifically, a sliding sleeve 516 is fitted onto the outer side of the collection cylinder 512, and a hook 517 is rotatably mounted on the outer side of the sliding sleeve 516. A fixing pin 518 is fixedly mounted on the outer side of the collection cylinder 512, located above the sliding sleeve 516, for attaching the hook 517. When cleaning solid impurities inside the collection cylinder 512, the sliding sleeve 516 is lifted upwards, moving it away from the top of the collection tank 515. Since the bottom of the collection cylinder 512 is separated from the top of the collection tank 515, after the hook 517 on the outer side of the sliding sleeve 516 is attached to the fixing pin 518 on the outer side of the collection cylinder 512, the collected solid impurities can be cleaned through the gap between the collection cylinder 512 and the collection tank 515, while maintaining the stability of the sliding sleeve 516.

[0032] Based on the above embodiments, in order to make full use of the reaction liquid collected inside the collection tank 515, an annular liquid cavity 15 is fixedly provided between the conical tank 1 and the vertical sleeve 11. An overflow plate 17 is fixedly provided inside the annular liquid cavity 15 on the side near the vertical sleeve 11. A liquid supply pipe 16 is fixedly provided on the outside of the annular liquid cavity 15. An air guide sleeve 18 is fixedly provided at the bottom of the vertical sleeve 11. A liquid gap is formed between the bottom of the air guide sleeve 18 and the conical tank 1.

[0033] Specifically, a circulation pump 519 is fixedly installed on the outside of the collection tank 515. The input end of the circulation pump 519 is connected to the inside of the collection tank 515. A three-way valve 521 is fixedly installed on the output end of the circulation pump 519. A riser pipe 520 and a discharge pipe 522 are fixedly installed on the two output ends of the three-way valve 521, respectively. The other end of the riser pipe 520 is fixedly connected to the liquid supply pipe 16. A liquid level detector 523 is installed on the side wall of the collection tank 515. A connecting pipe 524 is fixedly installed on the top of the collection tank 515. The other end of the connecting pipe 524 is fixedly connected to the return pipe 24.

[0034] The reaction liquid inside the collection tank 515 is fed into the riser pipe 520 by the circulation pump 519. The riser pipe 520 feeds the collected reaction liquid into the annular liquid chamber 15 through the liquid supply pipe 16. As the liquid level inside the annular liquid chamber 15 rises, when the liquid level is higher than the overflow plate 17, the reaction liquid inside the annular liquid chamber 15 overflows into the space between the conical tank 1 and the air guide sleeve 18. Under the action of gravity, it flows downward along the inner wall of the conical tank 1, forming a uniform "downward flowing water film". At this time, the air entering the vertical sleeve 11 flows towards the inner wall of the conical tank 1 under the guidance of the air guide sleeve 18, preventing the spiral air from blocking the water film when passing through the overflow point. Meanwhile, the spiral airflow carrying paper scraps and dust sweeps downward, and the solid impurities are thrown towards the inner wall of the conical tank 1 under the action of centrifugal force, and react with the water film flowing from top to bottom. The solid impurities are instantly adhered to by the water and washed away with the water. Furthermore, the reaction liquid discharged from the return pipe 24 is recycled through the connecting pipe 524, reducing the waste of the reaction liquid. Since a small amount of waste liquid is lost during the separation of solid impurities, the liquid level inside the collection tank 515 is detected by the liquid level detector 523 to prevent the liquid level inside the collection tank 515 from being too high or too low. When the liquid level is too low, the circulation pump 519 can be stopped to wait for the liquid level to rise. When the liquid level is too high, the discharge pipe 522 is connected to the output end of the circulation pump 519 through the three-way valve 521, and the liquid inside the collection tank 515 is discharged by the circulation pump 519 to adjust the liquid level. This achieves the effect of automatically detecting and adjusting the liquid level.

[0035] The principle of the air purification device for corrugated paper production in this application is as follows: First, air from the corrugated paper production area is introduced into the conical tank 1 by an external fan. The air is guided through the air inlet pipe 12 and enters tangentially along the vertical sleeve 11, flowing in a spiral pattern inside the conical tank 1. Simultaneously, the reaction liquid inside the collection tank 515 is introduced into the riser pipe 520 via the circulation pump 519. The riser pipe 520 then introduces the collected reaction liquid into the annular liquid chamber 15 via the liquid supply pipe 16. As the liquid level inside the annular liquid chamber 15 rises, when the liquid level exceeds the height of the overflow plate 17, the reaction liquid overflows from the annular liquid chamber 15. Between the conical tank 1 and the air guide sleeve 18, the water flows downward along the inner wall of the conical tank 1 under the action of gravity, forming a uniform "downward flowing water film". At this time, the air entering the vertical sleeve 11 flows to the inner wall of the conical tank 1 under the guidance of the air guide sleeve 18, while the spiral airflow carrying paper scraps and dust sweeps downward. The solid impurities are thrown to the inner wall of the conical tank 1 under the action of centrifugal force, and react with the water film flowing from top to bottom. The solid impurities are instantly adhered to by the water and washed away with the water. Finally, they enter the interior of the separation component 5 through the conveying pipe 13 to wait for separation. Meanwhile, air inside the conical tank 1 enters the purification tank 2 through the exhaust pipe 21. At this time, reaction liquid is introduced into the spray plate 3 through external equipment. The spray plate 3 connects several arc-shaped liquid chambers 31 through its inner cavity, filling each arc-shaped liquid chamber 31 with reaction liquid. Finally, under pressure, the liquid is sprayed downwards through the nozzle 32. At this time, the air flows upwards and can fully contact the reaction liquid. After passing through the bottom arc-shaped liquid chamber 31 through the vent 33, the air can continue to purify the air by being sprayed with reaction liquid through the upper spray plate 3. The vent 33 not only ensures the air... The liquid flows smoothly and disperses the air. As the upper reaction liquid flows downward through the vent 33, it can re-contact and react with the air passing through the vent 33, ensuring the quality of air purification. When the reaction liquid is sprayed downward, it reacts with the upward-moving air. The reaction liquid dissolves harmful gases in the air and also carries a large amount of fine paper dust, glue solidification particles, dust and other impurities. Finally, the mixture of reaction liquid and fine impurities flows downward into the interior of the conical tank 1 and then enters the interior of the separation component 5 through the conveying pipe 13 at the bottom of the conical tank 1. At this time, the high-speed shaft 41 driven by the motor 43 rotates at high speed inside the sealing cover 42, causing the high-speed shaft 41 to drive the outer perforated plate 44 to rotate. The perforated plate 44 disturbs and disperses the air entering the purification tank 2, increasing the contact reaction time between the air and the reaction liquid inside the purification tank 2. When the high-speed shaft 41 is driven by the motor 43 to rotate at high speed, the high-speed shaft 41 drives the low-speed shaft 49 to rotate slowly through the reducer 48. At this time, the low-speed shaft 49 drives the rotating sleeve 54 to rotate outside the conveying pipe 13 through the drive shaft 57. After the mixture inside the conical tank 1 enters the conveying pipe 13, it enters the space between the rotating sleeve 54 and the separation cylinder 51 through the discharge port A14 at the bottom of the conveying pipe 13 and the discharge port B58 on the outside of the rotating sleeve 54. The rotation of sleeve 54 drives the spiral scraper 55 to agitate the mixture, preventing fixed impurities from adhering statically to the filter surface of filter element 52. As impurities accumulate between the separator 51 and the rotating sleeve 54, the spiral scraper 55 driven by the rotating sleeve 54 can lift the impurities above to the discharge port 53 for discharge. Solid impurities fall into the collection cylinder 512 through the discharge port 53. The inner side of the collection cylinder 512 is isolated from the separator 51 by the sleeve 59 and the conical sleeve 510, achieving the effect of separate collection of solid impurities. The liquid filtered by filter element 52 flows into the collection tank 515 through the drain hole 514 for collection, realizing the effect of recycling the reaction liquid and making full use of the reaction liquid for multiple uses. Finally, after being purified by several layers of spray plates 3, the air continues to flow upward. At this time, under the gathering effect of the air-gathering hood 46, the air flows towards the bottom of the sealing cover 42. Finally, the atomized reaction liquid gathers at the bottom of the sealing cover 42 and drips down in the form of droplets. Furthermore, the airflow in the horizontal direction is blocked by the baffle ring 47. By changing the airflow path, the atomized reaction liquid carried by the air gathers at the bottom of the sealing cover 42 and inside the baffle ring 47. The reaction liquid gathered inside the baffle ring 47 drips down to the outside of the air-gathering hood 46 and is finally discharged through the return pipe 24 on the side wall of the purification tank 2, preventing the reaction liquid from entering the interior of the exhaust pipe 22 and being discharged into the atmosphere. The reaction liquid discharged through the return pipe 24 flows back to the collection tank 515 through the connecting pipe 524 for collection, reducing the waste of reaction liquid.

[0036] It is worth noting that the above-mentioned air purification methods have the following advantages: Firstly, by setting up a conical tank 1, a vertical sleeve 11, and an air inlet pipe 12 to form the basic structure of a cyclone separator, and then combining it with a purification tank 2 and its internal spray plate 3 and turbulence assembly 4, the air in the corrugated paper production area can continuously separate solid impurities during purification. The separated air then comes into contact with the reaction liquid through the spray plate 3 and turbulence assembly 4 for further purification, ensuring the purification effect of the air in the corrugated paper production environment. Moreover, continuous purification treatment eliminates the need for frequent shutdowns for maintenance, reducing subsequent maintenance costs.

[0037] Secondly, after the reaction liquid reacts with air, the mixture carrying impurities enters the separation component 5. After being filtered by the filter element 52, the liquid flows back to the collection tank 515 to participate in the purification process again, while solid impurities are collected and discharged separately. This circular design significantly reduces the consumption of reaction liquid, lowers purification costs, and avoids the pollution caused by the direct discharge of waste reaction liquid, which is in line with the concept of green and environmentally friendly production.

[0038] Thirdly, by setting up the spray plate 3 and its internal arc-shaped liquid chamber 31, nozzle 32, and vent 33 structure, the reaction liquid can fully contact the air through multi-layer spraying. When the air passes through the vent 33, it is dispersed into a fine airflow, which then contacts and reacts again with the upper sprayed reaction liquid, significantly improving the dissolution efficiency of harmful gases and the capture ability of fine impurities, thus ensuring the stability of air purification quality.

[0039] Fourthly, the high-speed shaft 41 of the turbulence assembly 4 drives the porous plate 44 to rotate at high speed, which disturbs and disperses the air entering the purification tank 2, extending the contact reaction time between the air and the reaction liquid. At the same time, the high-speed shaft 41 drives the low-speed shaft 49 and the rotating sleeve 54 to rotate slowly through the reducer 48, so that the spiral scraper 55 continuously stirs the mixture, effectively preventing solid impurities from adhering statically on the filter surface of the filter element 52, and ensuring the long-term stable operation of the filtration system.

[0040] Fifthly, by using the converging effect of the gas-gathering hood 46 and the blocking design of the baffle ring 47, the airflow path is changed, causing the atomized reaction liquid to collect and drip at the bottom of the sealing cap 42 and inside the baffle ring 47. Then, it flows back to the collection tank 515 through the return pipe 24 and the connecting pipe 524, effectively preventing the reaction liquid from entering the exhaust pipe 22 and being discharged into the atmosphere with the purified air, thus minimizing the waste of the reaction liquid and improving resource utilization.

[0041] Advantage six: Through the synergistic effect of the annular liquid chamber 15, the liquid supply pipe 16, and the overflow plate 17, the reaction liquid forms a uniform "downward flowing water film" on the inner wall of the conical tank 1. Combined with the centrifugal force of the spiral airflow, it achieves efficient capture of large paper scraps and dust. Most solid impurities can be separated in the pretreatment stage, reducing the processing load of the subsequent purification unit.

[0042] Advantage 7: The spiral scraper 55 driven by the rotating sleeve 54 lifts the accumulated solid impurities upward to the discharge port 53 for discharge, and the impurities are collected separately through the collection cylinder 512, sleeve 59 and conical sleeve 510, avoiding secondary mixing of impurities with the reaction liquid, simplifying the solid-liquid separation process, improving the convenience of impurity treatment and the continuous operation capability of the purification system.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air purification device for corrugated paper production, characterized in that, include: A conical tank (1) is provided with a vertical sleeve (11) at the top of the conical tank (1), and an air inlet pipe (12) is provided tangentially on the outside of the vertical sleeve (11). This serves as the basic structure of a cyclone separator and is used to separate solid impurities. Purification tank (2) is set on the top of vertical sleeve (11). The bottom of the purification tank (2) is provided with exhaust pipe (21). The bottom end of the exhaust pipe (21) extends downward to the inside of the conical tank (1). The outside of the purification tank (2) is provided with air outlet pipe (22). The spray plate (3) for spraying the reaction liquid is set inside the purification tank (2) and located below the gas outlet pipe (22); The turbulence component (4) is located inside the purification tank (2) and below the spray plate (3) to turbulent the air and the reaction liquid to fully mix and react. The separation component (5) is located at the bottom of the conical tank (1) and is used to separate the reaction liquid from solid impurities.

2. The air purification device for corrugated paper production according to claim 1, characterized in that, The spray plates (3) are arranged axially inside the purification tank (2). Each spray plate (3) has an arc-shaped liquid cavity (31) at its bottom. The arc-shaped liquid cavities (31) are evenly distributed radially along the spray plate (3) and are arranged in a circular array around the axis of the spray plate (3). Each arc-shaped liquid cavity (31) has a nozzle (32) at its bottom. The inner side of the spray plate (3) has a vent hole (33) between two adjacent arc-shaped liquid cavities (31). The side wall of the purification tank (2) is provided with a diversion pipe (23) for conveying the reaction liquid into the spray plates (3). A conical surface (25) is provided between the inner wall of the purification tank (2) and the top of the exhaust pipe (21).

3. The air purification device for corrugated paper production according to claim 2, characterized in that, The turbulence assembly (4) includes a high-speed shaft (41) that runs through the inside of the spray plate (3). A sealing cover (42) is rotatably disposed on the outside of the high-speed shaft (41). The sealing cover (42) is disposed on the top of the purification tank (2). A motor (43) for driving the high-speed shaft (41) to rotate is disposed on the top of the sealing cover (42). Perforated plates (44) are arranged in an array on the outside of the high-speed shaft (41).

4. The air purification device for corrugated paper production according to claim 3, characterized in that, The bottom of the sealing cover (42) is provided with a gas gathering hood (46) through a fixing column (45). The bottom of the sealing cover (42) is provided with a retaining ring (47) outside the gas gathering hood (46). The gas gathering hood (46) is sealed to the inner wall of the purification tank (2). The gas gathering hood (46) is located at the bottom of the gas outlet pipe (22). A return pipe (24) is fixedly provided on the side wall of the purification tank (2).

5. An air purification device for corrugated paper production according to claim 4, characterized in that, The separation assembly (5) includes a separation cylinder (51) installed at the bottom of the conical tank (1). A filter element (52) is provided on the side wall at the lower end of the separation cylinder (51). A discharge port (53) is provided on the side wall at the upper end of the separation cylinder (51). A rotating sleeve (54) is rotatably provided inside the separation cylinder (51). A spiral scraper (55) is fixedly provided on the outside of the rotating sleeve (54) for conveying and discharging solid impurities deposited at the bottom upwards.

6. An air purification device for corrugated paper production according to claim 5, characterized in that, The bottom of the conical tank (1) is provided with a conveying pipe (13), and the bottom of the conveying pipe (13) is provided with a discharge port A (14). The rotating sleeve (54) is rotatably disposed on the outside of the conveying pipe (13). An end cap (56) is provided at the bottom of the rotating sleeve (54). The end cap (56) is rotatably disposed at the bottom of the separating cylinder (51). A discharge port B (58) is opened on the side wall of the rotating sleeve (54) corresponding to the discharge port A (14). A drive shaft (57) is coaxially disposed on the top of the end cap (56). The low-speed shaft (49) is connected to the bottom of the high-speed shaft (41) via a reducer (48). The low-speed shaft (49) is coaxially connected to the drive shaft (57). The reducer (48) is located inside the purification tank (2).

7. An air purification device for corrugated paper production according to claim 6, characterized in that, A sleeve (59) is fitted on the outside of the separating cylinder (51), and a conical sleeve (510) is fixedly installed on the top of the sleeve (59). The conical sleeve (510) is located on the outside of the separating cylinder (51) and above the filter element (52). A collecting cylinder (512) is installed on the outside of the conical sleeve (510) through a fixing plate (511). The bottom of the separation cylinder (51) is fixedly provided with a base plate (513), and the top of the base plate (513) is provided with a drain hole (514) on the outside of the separation cylinder (51). The base plate (513) is provided on the top of the collection tank (515), and the collection tank (515) is located at the bottom of the collection cylinder (512). The drain hole (514) is connected to the inside of the collection tank (515).

8. An air purification device for corrugated paper production according to claim 7, characterized in that, An annular liquid cavity (15) is provided between the conical tank (1) and the vertical sleeve (11). An overflow plate (17) is provided inside the annular liquid cavity (15) on the side near the vertical sleeve (11). A liquid supply pipe (16) is provided on the outside of the annular liquid cavity (15). An air guide sleeve (18) is provided at the bottom of the vertical sleeve (11). A liquid gap is formed between the bottom of the air guide sleeve (18) and the conical tank (1).

9. An air purification device for corrugated paper production according to claim 8, characterized in that, A circulation pump (519) is provided on the outside of the collection tank (515). The input end of the circulation pump (519) is connected to the inside of the collection tank (515). A three-way valve (521) is provided at the output end of the circulation pump (519). A riser pipe (520) and a discharge pipe (522) are respectively provided at the two output ends of the three-way valve (521). The other end of the riser pipe (520) is connected to the liquid supply pipe (16). A liquid level detector (523) is installed on the side wall of the collection tank (515), and a connecting pipe (524) is installed on the top of the collection tank (515). The other end of the connecting pipe (524) is connected to the return pipe (24).

10. An air purification device for corrugated paper production according to claim 7, characterized in that, The outer side of the collection tube (512) is fitted with a sliding sleeve (516), and a hook (517) is rotatably provided on the outer side of the sliding sleeve (516). A fixing pin (518) is provided on the outer side of the collection tube (512), and the fixing pin (518) is located above the sliding sleeve (516) for hanging the hook (517).

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