A photocatalytic purification device

Abstract

This invention relates to the field of purification equipment technology and provides a photocatalytic purification device, including a filter box, a catalytic purification box, and a solution reaction tank fixed on a device frame. The solution reaction tank is installed at the tank mounting position on the device frame and is used for purifying wastewater. The filter box and the catalytic purification box work together to purify exhaust gas. An air inlet pipe is provided on one side of the filter box. The photocatalytic purification device provided by this solution not only has the ability to catalytically purify air but also purify wastewater and other solutions, meeting the needs of multiple applications. It uses an adsorption-type filter cleaning mechanism to unclog the filter holes of the air filter and prevent clogging. It uses a method of injecting high-pressure air from above and collecting impurities from below to unclog the filter holes, ensuring the continuous and efficient filtration capacity of the air filter and guaranteeing the stability of the purification effect.

Description

Technical Field

[0001] This invention belongs to the field of purification equipment technology, and particularly relates to a photocatalytic purification device. Background Technology

[0002] As cities become increasingly modernized and industrial models become more diverse, the quality of people's living environment is deteriorating. Chemical plants, steel mills, pharmaceutical factories, as well as coking plants and oil refineries emit strong odors that seriously pollute the environment and affect human health.

[0003] The purification equipment used in the prior art, such as the patent document with application publication number CN107983065A, adopts a method of first adsorbing and filtering dust, then using photocatalytic purification, and finally using spraying to purify the air. In its document, in order to prevent the filter from clogging, a motor-driven stirring rod is used to clean it.

[0004] However, the circular stirring rod has a small distribution area during cleaning, making it difficult to achieve a good anti-clogging effect. At the same time, although impurities on the surface of the filter screen are swept off, impurities inside the filter pores are easy to accumulate and cannot be removed. As clogging and pressure increase, impurities in the filter pores can easily pass through the filter screen. In addition, current purification equipment can usually only purify one of wastewater and exhaust gas, and does not adopt a good distributed structure, which has great limitations in its use. Summary of the Invention

[0005] This invention provides a photocatalytic purification device, which aims to solve the problems mentioned in the background art, namely, the inability to remove impurities inside the filter pores of the filter screen, and the inability to purify only one of wastewater and exhaust gas.

[0006] To address the aforementioned problems, this invention provides a photocatalytic purification device comprising: a filter box, a catalytic purification box, and a solution reaction tank fixed to a device frame. The solution reaction tank is installed at the tank mounting position on the device frame and is used for purifying wastewater. The filter box and the catalytic purification box work together to purify exhaust gas. An air inlet pipe is provided on one side of the filter box. An air inlet connecting pipe and an air outlet connecting pipe are respectively provided on the top of the filter box and the catalytic purification box. The air inlet connecting pipe and the air outlet connecting pipe are connected to the same exhaust fan for drawing out the filtered air from the filter box and discharging it into the catalytic purification box for catalytic purification. An air exhaust pipe is provided on one side of the catalytic purification box. The air exhaust pipe is connected to the solution reaction tank for introducing clean air; the filter box is divided into a filter chamber and an impurity collection chamber. The filter chamber is connected to the air inlet pipe and the air inlet connecting pipe. The impurity collection chamber is located at the bottom of the filter box and below the filter chamber. The filter chamber and the impurity collection chamber are not interconnected. A rectangular frame is fixedly installed inside the filter chamber. An air filter screen is fixedly installed inside the rectangular frame. The air filter screen has multiple filter holes evenly distributed and arranged in multiple rows. An adsorption-type filter screen unblocking mechanism is located inside the filter chamber for unblocking the filter holes of the air filter screen.

[0007] Preferably, the adsorption-type filter screen unblocking mechanism includes a high-pressure air nozzle and an impurity collecting pipe. The high-pressure air nozzle and the impurity collecting pipe are slidably disposed above and below the rectangular frame and the air filter screen, respectively. The high-pressure air nozzle and the impurity collecting pipe can slide laterally along the distribution direction of the filter holes of the air filter screen. The bottom of the high-pressure air nozzle is provided with multiple air spray hoods, and the top of the impurity collecting pipe is provided with multiple impurity collecting hoods. The number of air spray hoods and impurity collecting hoods is the same as the number of rows of filter holes and their positions correspond. The corresponding air spray hoods and impurity collecting hoods are located on the same longitudinal line and can block the same filter hole at the same time. The diameter of the air spray hood opening is larger than the diameter of the filter hole, and the diameter of the impurity collecting hood opening is larger than the diameter of the air spray hood opening.

[0008] Preferably, the adsorption filter screen clearing mechanism further includes a connecting pipe, an impurity discharge hose, an impurity collection filter bag, a high-pressure air inlet mechanism, and a transverse drive mechanism. The connecting pipe is connected to the impurity gathering pipe, the impurity discharge hose is connected to the connecting pipe and the discharge end extends into the impurity collection chamber. The impurity collection chamber is provided with an impurity collection filter bag, the bag opening of which is fitted onto the discharge end of the impurity discharge hose. A filter bag loading and unloading door is detachably installed on one side of the bottom of the filter box, and the filter bag loading and unloading door has an exhaust hole.

[0009] Preferably, the high-pressure air introduction mechanism includes a second connecting pipe, an air inlet hose, an external connecting pipe, a first regulating valve, and a second regulating valve. The second connecting pipe is connected to the high-pressure air nozzle, the air inlet hose is connected to the second connecting pipe, the external connecting pipe penetrates the wall of the filter box, the air inlet end is connected to the exhaust connecting pipe, the exhaust end is connected to the air inlet end of the air inlet hose, the first regulating valve is located on the exhaust connecting pipe, the air inlet end of the external connecting pipe is located between the induced draft fan and the first regulating valve, and the second regulating valve is located on the external connecting pipe.

[0010] Preferably, the transverse drive mechanism includes a first fixed plate, a second fixed plate, two guide plates, two transverse screws, two first synchronous pulleys, a first synchronous belt, a motor base, and a drive motor. The first fixed plate and the second fixed plate are respectively fixedly installed on the second connecting pipe and the first connecting pipe. The two guide plates slide through the first fixed plate and the second fixed plate, and the two ends of the two guide plates are respectively fixedly connected to the inner walls of the two sides of the filter chamber. The two transverse screws are respectively threaded through the first fixed plate and the second fixed plate, and the two ends of the two transverse screws are respectively rotatably connected to the inner walls of the two sides of the filter chamber. Both ends of the two transverse screws extend outside the filter box. The guide plates and the transverse screws are arranged in the same direction. The two first synchronous pulleys are respectively fixedly installed on the same end of the two transverse screws. The synchronous belt is fitted on the two first synchronous pulleys. The motor base is fixedly installed on one side of the filter box. The drive motor is fixedly installed on the motor base. The output shaft of the drive motor is fixedly connected to the end of the corresponding transverse screw.

[0011] Preferably, the high-pressure air nozzle, the impurity collecting pipe, the first connecting pipe, and the second connecting pipe are all rigid pipes, and the width of the frame side of the rectangular frame is greater than the width of the high-pressure air nozzle, the impurity collecting pipe, the first connecting pipe, the second connecting pipe, the first fixing plate, and the second fixing plate.

[0012] Preferably, the diameter of the external connecting pipe is larger than the diameter of the air inlet hose, and the air inlet end of the external connecting pipe is inclined along the windward direction, which is the direction from the air outlet end of the induced draft fan to the exhaust connecting pipe.

[0013] Preferably, both the first fixing plate and the second fixing plate are provided with rectangular sliding openings and threaded holes, the guide strip slides through the corresponding rectangular sliding openings, and the transverse screw passes through the corresponding threaded holes by thread engagement.

[0014] Preferably, an activated carbon layer is detachably installed inside the filter chamber, and the activated carbon layer is located above the air filter and the adsorption filter unblocking mechanism.

[0015] Preferably, the catalytic purification chamber is divided into an upper photocatalytic purification chamber and a lower spray chamber. The photocatalytic purification chamber is connected to an exhaust pipe, and the spray chamber is connected to an air exhaust pipe. Multiple rows of photocatalytic lamps and catalytic reaction layers are installed alternately in the photocatalytic purification chamber for catalytic purification of the air. The photocatalytic purification chamber and the spray chamber are connected by a connecting bend pipe.

[0016] The photocatalytic purification equipment described above is used to treat wastewater and waste gas.

[0017] Compared with related technologies, the photocatalytic purification device provided by the present invention has the following beneficial effects:

[0018] Compared with existing technologies, the photocatalytic purification equipment provided in this solution uses an adsorption-type filter cleaning mechanism to unclog the filter holes of the air filter and prevent clogging. It achieves the unclogging of the filter holes by using high-pressure air to rush in from above and collecting impurities from below. Unlike the traditional method of only cleaning the surface, impurities are collected uniformly into the impurity collection chamber, resulting in better cleaning effect. This step ensures the continuous and efficient filtration capability of the air filter and guarantees the stability of the purification effect. At the same time, this solution not only has the function of catalytic purification of air, but also meets the purification needs of wastewater and other solutions, satisfying the needs of multiple applications. Attached Figure Description

[0019] Figure 1 This is a front-view three-dimensional structural diagram of a photocatalytic purification device provided by the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure on the other side is shown.

[0021] Figure 3 This is a rear view structural schematic diagram of a photocatalytic purification device provided by the present invention;

[0022] Figure 4 This is a schematic diagram of the main cross-sectional structure of a photocatalytic purification device provided by the present invention;

[0023] Figure 5 for Figure 4 An enlarged structural diagram of part A shown in the figure;

[0024] Figure 6 for Figure 5 An enlarged structural diagram of part B shown in the figure;

[0025] Figure 7 for Figure 4 An enlarged structural diagram of section C shown in the figure;

[0026] Figure 8 for Figure 7An enlarged structural diagram of part D shown in the figure;

[0027] Figure 9 for Figure 4 An enlarged structural diagram of part E shown in the figure;

[0028] Figure 10 for Figure 4 An enlarged structural diagram of part F shown in the figure;

[0029] Figure 11 This is a top-view three-dimensional structural diagram of the adsorption filter screen unblocking mechanism, electrostatic adsorption rod, impurity removal mechanism and filter bag tapping mechanism in this invention;

[0030] Figure 12 for Figure 11 A schematic diagram of the three-dimensional structure on the other side is shown;

[0031] Figure 13 for Figure 11 The diagram shown is a bottom-view three-dimensional structure diagram;

[0032] Figure 14 This is a schematic diagram of the gas and liquid supply structure of the solution reaction tank in this invention;

[0033] Figure 15 for Figure 14 A partial frontal sectional view of the structure.

[0034] Attached reference numerals: 1. Equipment frame; 2. Filter box; 3. Catalytic purification box; 4. Inlet pipe; 5. Inlet connecting pipe; 6. Exhaust connecting pipe; 7. Drainage fan; 8. Air exhaust pipe; 9. Filter chamber; 10. Impurity collection chamber; 11. Rectangular frame; 12. Air filter screen; 13. Filter hole; 14. High-pressure air nozzle; 15. Impurity collecting pipe; 16. Air spray hood; 17. Impurity collection hood; 18. Connecting pipe one; 19. Impurity exhaust pipe. 20. Outlet hose; 21. Impurity collection filter bag; 22. Filter bag removal and placement door; 23. Exhaust port; 24. Connecting pipe two; 25. Inlet hose; 26. External connecting pipe; 27. Regulating valve one; 28. Regulating valve two; 29. ​​Fixing plate one; 30. Fixing plate two; 31. Guide bar plate; 32. Transverse screw; 33. Synchronous pulley one; 34. Synchronous belt one; 35. Motor base; 36. Drive motor; 37. Activated carbon layer; 38. Photocatalytic purification chamber; 39. Spray chamber; 40. Photocatalytic lamp tube; 41. Catalytic reaction layer; 42. Conductor bend; 43. Water filter screen; 44. Water pump; 45. Spray pipe; 46. Water distribution pipe; 47. Atomizing nozzle; 48. Sewage pipe; 49. Water supply pipe; 50. Air guide plate; 51. Operating door; 52. Cleaning plate; 53. Electrostatic adsorption rod; 54. Dust scraper; 55. Synchronization plate; 56. Cleaning brush; 57. Camshaft; 58. Beating cam; 59. Power transmission shaft; 60. Bevel gear; 61. Synchronous pulley two; 62. Synchronous belt two; 63. Tank mounting position; 64. Solution reaction tank; 65. Distributed gas pipe; 66. Distributed solution pipe; 67. Ultraviolet lamp tube; 68. Purified exhaust pipe; 69. Clean air inlet pipe; 70. Air compressor pump; 71. Liquid storage tank; 72. Solution inlet pipe; 73. Solution reflux pipe; 74. Solution pump two; 75. Liquid replenishment pipe. Detailed Implementation

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] This invention provides a photocatalytic purification device, such as... Figure 1-15 As shown, the photocatalytic purification equipment includes: a filter box 2, a catalytic purification box 3, and a solution reaction tank 63, all fixed to a frame 1. The solution reaction tank 63 is installed at the tank mounting position 62 on the frame 1 and is used to purify wastewater. The filter box 2 and the catalytic purification box 3 work together to purify exhaust gas. An air inlet pipe 4 is provided on one side of the filter box 2. An air inlet connecting pipe 5 and an air outlet connecting pipe 6 are respectively provided on the top of the filter box 2 and the catalytic purification box 3. The air inlet connecting pipe 5 and the air outlet connecting pipe 6 are connected to the same exhaust fan 7, which is used to draw the filtered air from the filter box 2 and discharge it into the catalytic purification box 3 for catalytic purification. An air exhaust pipe 8 is provided on one side of the catalytic purification box 3. The filter box 2 is divided into filter chambers 9. The filter chamber 9 is connected to the air inlet pipe 4 and the air inlet connecting pipe 5. The impurity collection chamber 10 is located at the bottom of the filter box 2 and below the filter chamber 9. The filter chamber 9 and the impurity collection chamber 10 are not interconnected. A rectangular frame 11 is fixedly installed inside the filter chamber 9. An air filter screen 12 is fixedly installed inside the rectangular frame 11. The air filter screen 12 has multiple filter holes 13 evenly distributed and arranged in multiple rows. An adsorption filter screen unblocking mechanism is located inside the filter chamber 9 and is used to unblock the filter holes 13 of the air filter screen 12. The air exhaust pipe 8 is connected to the solution reaction tank 63 and is used to introduce clean air.

[0038] In this embodiment, during use, the power supply to the device is first turned on, and the induced draft fan 7 is started. The air intake pipe 4 draws in the air to be purified, and the air enters the filter chamber 9 of the filter box 2. Through the action of the induced draft fan 7, the filtered air is drawn into the catalytic purification box 3 via the air intake connecting pipe 5 for further catalytic purification treatment.

[0039] Inside the filter chamber 9, air is filtered through an air filter 12 fixed to a rectangular frame 11. Multiple filter holes 13 on the air filter 12 intercept particulate matter in the air, while the clean air continues to flow into the air inlet connecting pipe 5.

[0040] During equipment operation, the adsorption filter cleaning mechanism works in the filter chamber 9 to clean the filter holes 13 of the air filter 12 and prevent blockage. This solution uses high-pressure air to be injected from above and impurities to be collected from below to clean the filter holes 13. Unlike the traditional method of only cleaning the surface, impurities are collected into the impurity collection chamber 10, resulting in better cleaning effect. This step ensures the continuous and efficient filtration capability of the air filter 12 and guarantees the stability of the purification effect.

[0041] Wastewater is then connected to solution reaction tank 63 for catalytic purification. Solution reaction tank 63 uses air filtered by the former to ensure the cleanliness of the purified air and improve the catalytic purification effect. As a whole, this solution not only has the function of catalytic purification of air, but also meets the purification of wastewater and other solutions, thus satisfying the needs of multiple purposes.

[0042] In the above scheme, the solution reaction tank 63 is equipped with a distributed gas pipe 64 and a distributed solution pipe 65, both of which are circular. The distributed gas pipe 64 is located above the distributed solution pipe 65. Multiple nozzles are installed on opposite sides of the distributed gas pipe 64 and the distributed solution pipe 65, respectively for spraying air and wastewater. The solution reaction tank 63 is equipped with ultraviolet lamps 66 inserted into the distributed gas pipe 64 and the distributed solution pipe 65 for catalyzing the wastewater. A purified exhaust pipe 67 is installed above the solution reaction tank 63. A clean air inlet pipe 68 is connected to the distributed gas pipe 64 and extends into the solution reaction tank 63. The clean air inlet pipe 68 is connected to the air exhaust pipe 8. An air compressor pump 69 is installed on the clean air inlet pipe 68. A liquid storage tank 70 is fixedly installed at the bottom of the equipment frame 1. A solution inlet pipe 71 is connected to the distributed solution pipe 65. The solution inlet pipe 71 extends to the outside of the solution reaction tank 63 and is connected to the liquid storage tank 70. A solution pump 72 is installed on the solution inlet pipe 71 to pump the solution in the liquid storage tank 70 into the distributed solution pipe 65. The bottom of the solution reaction tank 63 and the liquid storage tank 70 are connected to the same solution return pipe 73. A solution pump 74 is installed on the solution return pipe 73 to return the solution in the solution reaction tank back into the liquid storage tank 70. A replenishment pipe 75 is installed on the liquid storage tank 70.

[0043] In this embodiment, the filter box 2 and the catalytic purification box 3, which are fixed to the equipment frame 1, work together to purify the exhaust gas; at the same time, the solution reaction tank 63 is used to purify the wastewater. This design achieves the combined treatment of exhaust gas and wastewater, improving the equipment's efficiency and processing capacity.

[0044] The distributed gas pipes 64 and distributed solution pipes 65 inside the solution reaction tank 63 adopt a circular distributed design, and the use of ultraviolet lamps 66 is all to achieve non-equilibrium photocatalytic reaction and improve the removal rate of ammonia nitrogen and COD.

[0045] In operation, clean air is drawn from the air exhaust pipe 8 by the clean air inlet pipe 68 via the air compressor pump 69, and then sprayed downwards through multiple nozzles on the distributed air pipe 64. Simultaneously, wastewater is added to the liquid storage tank 70 via the replenishment pipe 75. The wastewater is then introduced into the distributed solution pipe 65 through the solution inlet pipe 71 and the solution pump 72, and then sprayed upwards through multiple nozzles at the top of the distributed solution pipe 65. The gas and liquid phases come into countercurrent contact in a vertical direction at high speed. After the high-speed rotating upward liquid flow collides with the high-speed downward air flow, the liquid encapsulates and carries a large amount of pressurized gas. Due to the continuous increase and outward expansion of the encapsulated pressurized gas, as well as the division and compression between the downward high-speed gas phase and the upward high-speed liquid phase, the gas phase continuously encapsulated and separated by the liquid phase forms a large number of bubbles and droplets. The bubbles and droplets are then carried outwards by the high-speed jet of liquid and thrown towards the reactor wall, and then return to the center to come into contact with the high-speed air flow again, entraining a large amount of gas phase to form new bubbles and droplets.

[0046] The continuously flowing gas and bubble layer hinder the upward flow of the liquid phase; conversely, the continuously upward-spraying liquid and bubble layer also hinder the downward flow of the gas phase. When the gas and liquid phases reach momentum equilibrium, a stable foam layer is formed. The large amount of foam formed within the foam layer not only significantly increases the mass transfer area between the gas and liquid phases, but also breaks down under the impact of a large amount of high-speed ejected liquid fluid and the bidirectional compression of the (gas) and liquid phases, thus separating the gas and liquid phases. This results in a very high foam renewal frequency, greatly enhancing the reaction and separation efficiency between the gas and liquid phases, thereby giving the device a high mass transfer and separation efficiency. The droplets also increase the base area of ​​the reaction liquid, catalyst coating, and UV lamp 66, greatly improving reaction efficiency. This makes it suitable for the treatment of various wastewaters, especially high-ammonia nitrogen wastewater.

[0047] The specific catalyst coating and related operations described above are detailed in patent document CN107051337A. This invention overcomes the limitations of existing technologies by first forming a foam layer from the waste liquid, then combining this foam layer with a photocatalytic reaction. Because the foam contains encapsulated gas, the ammonia gas generated after the foam reacts with the light source and catalyst coating disrupts the bubble equilibrium, causing the bubbles to burst and separating the gas and liquid phases. The foam itself in the reactor has a very high renewal frequency, allowing the ammonia gas to be carried into the environment, thus continuously promoting the reaction to the right. The ammonia nitrogen removal reaction remains in a non-equilibrium state, constantly shifting to the right, thus significantly increasing the ammonia nitrogen removal rate. The ammonia nitrogen removal rate in this invention can reach over 90%, making the device particularly suitable for treating high-ammonia-nitrogen wastewater. Furthermore, the device also has a certain effect on COD removal, achieving a COD removal rate of approximately 50%.

[0048] Compared with existing technologies, the photocatalytic reaction device provided by this invention has a simple structure and is particularly suitable for industrial treatment of high ammonia nitrogen wastewater. The gas and liquid phases are in countercurrent contact at high speed in the vertical direction. The reaction liquid is in full contact with the light source and catalyst coating, which not only increases the contact area, but also keeps the ammonia nitrogen removal reaction in a non-equilibrium state during the foam layer reaction, promoting the reaction to move in the direction of ammonia gas generation, thus improving the reaction efficiency. The processing capacity and reaction efficiency are far greater than those of ultrasonic atomization.

[0049] This solution not only catalytically purifies air but also purifies wastewater and other solutions, thus meeting the needs of multiple applications.

[0050] In summary, the photocatalytic purification device in this embodiment, by combining a non-equilibrium photocatalytic reaction device, not only improves the removal efficiency of ammonia nitrogen and COD, but also has a simple structure, is suitable for industrial processing, and has broad application prospects.

[0051] In a further preferred embodiment of the present invention, the adsorption-type filter screen unblocking mechanism includes a high-pressure air nozzle 14 and an impurity collecting pipe 15. The high-pressure air nozzle 14 and the impurity collecting pipe 15 are respectively slidably disposed above and below the rectangular frame 11 and the air filter screen 12. The high-pressure air nozzle 14 and the impurity collecting pipe 15 can slide laterally along the distribution direction of the filter holes 13 of the air filter screen 12. The bottom of the high-pressure air nozzle 14 is provided with a plurality of air spray covers 16, and the top of the impurity collecting pipe 15 is provided with a plurality of impurity collecting covers 17. The number of air spray covers 16 and impurity collecting covers 17 is the same as the number of rows of filter holes 13 and their positions correspond. The corresponding air spray covers 16 and impurity collecting covers 17 are located on the same longitudinal line and can simultaneously block the same filter hole 13. The diameter of the opening of the air spray cover 16 is larger than the diameter of the filter hole 13, and the diameter of the opening of the impurity collecting cover 17 is larger than the diameter of the opening of the air spray cover 16.

[0052] In this embodiment, when cleaning the air filter 12, the high-pressure air nozzle 14 and the impurity collecting pipe 15 slide above and below the rectangular frame 11 and the air filter 12, respectively. These two pipes move laterally along the distribution direction of the filter holes 13 of the air filter 12 to ensure that each filter hole 13 is cleared.

[0053] Multiple air nozzles 16 at the bottom of the high-pressure air nozzle 14 align with each filter hole 13 as the nozzle moves. When the air nozzles 16 are aligned with the filter holes 13, high-pressure air is ejected from the air nozzles 16, using the impact force of the airflow to clear the filter holes 13 and remove impurities clogging them.

[0054] The impurity collecting pipe 15, which moves synchronously with the high-pressure air nozzle 14, has multiple impurity collecting hoods 17 at its top, each corresponding to the area below each unblocked filter hole 13. Because the diameter of the impurity collecting hood 17 is larger than that of the air nozzle 16, it ensures that the unblocked impurities and particles are effectively collected in the impurity collecting hood 17 and moved with the impurity collecting pipe 15 to the impurity collecting chamber 10 for unified processing.

[0055] By using the high-pressure air nozzle 14 and air spray shroud 16, the high-pressure airflow is used to clear the filter holes 13, greatly improving the clearing efficiency and ensuring the continuous and efficient filtration capability of the air filter 12.

[0056] The design of the impurity collecting pipe 15 and the impurity collecting hood 17 allows the impurities and particles that have been cleared down to be accurately collected into the impurity collecting chamber 10, thus avoiding secondary pollution from impurities and equipment blockage.

[0057] The sliding arrangement of the high-pressure air nozzle 14 and the impurity collecting pipe 15, as well as the corresponding arrangement of the air spray hood 16 and the impurity collecting hood 17, makes the entire unblocking mechanism compact and stable in operation, effectively improving the overall performance and reliability of the equipment.

[0058] In a further preferred embodiment of the present invention, the adsorption filter screen clearing mechanism further includes a connecting pipe 18, an impurity discharge hose 19, an impurity collection filter bag 20, a high-pressure air introduction mechanism, and a transverse drive power mechanism. The connecting pipe 18 is connected to the impurity gathering pipe 15, and the impurity discharge hose 19 is connected to the connecting pipe 18, with its discharge end extending into the impurity collection chamber 10. The impurity collection chamber 10 is provided with an impurity collection filter bag 20, the bag opening of which is fitted onto the discharge end of the impurity discharge hose 19. A filter bag loading and unloading door 21 is detachably installed on one side of the bottom of the filter box 2, and the filter bag loading and unloading door 21 has an exhaust hole 22.

[0059] In this embodiment, after the impurity collecting pipe 15 collects impurities, the impurities are transferred to the impurity collecting filter bag 20 in the impurity collecting chamber 10 through the connecting pipe 18 and the impurity discharge hose 19. The opening of the impurity collecting filter bag 20 is tightly fitted onto the discharge end of the impurity discharge hose 19 to ensure that impurities do not leak while allowing air circulation.

[0060] Impurities are stored in the impurity collection filter bag 20. At the same time, the impurity collection filter bag 20 also plays a role in secondary filtration. As impurities accumulate, the impurity collection filter bag 20 will gradually become saturated.

[0061] Once the impurity collection filter bag 20 reaches a certain saturation level, the operator can easily remove and replace it by opening the filter bag removal and placement door 21. The filter bag removal and placement door 21 is designed for easy operation, and its vent 22 allows air to escape from the impurity collection chamber 10, preventing pressure buildup.

[0062] In a further preferred embodiment of the present invention, the high-pressure air introduction mechanism includes a second connecting pipe 23, an air inlet hose 24, an external connecting pipe 25, a first regulating valve 26, and a second regulating valve 27. The second connecting pipe 23 is connected to the high-pressure air nozzle 14, the air inlet hose 24 is connected to the second connecting pipe 23, the external connecting pipe 25 penetrates the wall of the filter box 2, the air inlet end is connected to the exhaust connecting pipe 6, and the exhaust end is connected to the air inlet end of the air inlet hose 24. The first regulating valve 26 is located on the exhaust connecting pipe 6, the air inlet end of the external connecting pipe 25 is located between the induced draft fan 7 and the first regulating valve 26, and the second regulating valve 27 is located on the external connecting pipe 25.

[0063] In this embodiment, high-pressure air enters the connecting pipe 23 through the intake hose 24 and is then introduced into the high-pressure air nozzle 14. During this process, the external connecting pipe 25, acting as a bridge connecting the exhaust connecting pipe 6 and the intake hose 24, plays a crucial role. Using filtered, clean air eliminates concerns about secondary pollution. The intake end of the external connecting pipe 25 is located between the induced draft fan 7 and the regulating valve 26, ensuring that high-pressure air can smoothly enter the external connecting pipe 25 under the action of the induced draft fan 7. When cleaning is not required, the regulating valve 27 can be closed and the regulating valve 26 fully opened; during cleaning, the regulating valve 26 is reduced and the regulating valve 27 is opened.

[0064] Regulating valve 26 and regulating valve 27 are respectively installed on the exhaust connecting pipe 6 and the external connecting pipe 25, and are used to regulate the flow rate and pressure of high-pressure air. By adjusting the opening of these two regulating valves, the amount of high-pressure air entering the high-pressure air nozzle 14 can be precisely controlled, thereby achieving fine adjustment of the filter screen unblocking effect.

[0065] After adjustment, the high-pressure air is ejected from the air nozzle 16 at the bottom of the high-pressure air nozzle 14, clearing the filter holes 13 of the air filter 12. This process not only removes impurities clogging the filter holes 13, but also further improves the filtration efficiency of the air filter 12 through the scouring effect of the high-pressure airflow.

[0066] High-pressure air is evenly sprayed onto the filter holes 13 through the air spray hood 16, which not only removes the blockages, but also improves the filtration efficiency of the filter screen through the flushing effect and extends the service life of the filter screen.

[0067] In a further preferred embodiment of the present invention, the transverse drive mechanism includes a first fixed plate 28, a second fixed plate 29, two guide plates 30, two transverse screws 31, two first synchronous pulleys 32, a first synchronous belt 33, a motor base 34, and a drive motor 35. The first fixed plate 28 and the second fixed plate 29 are respectively fixedly installed on the second connecting pipe 23 and the first connecting pipe 18. The two guide plates 30 slide through the first fixed plate 28 and the second fixed plate 29 respectively. The two ends of the two guide plates 30 are respectively fixedly connected to the inner walls of the two sides of the filter chamber 9. The two transverse screws 31 are respectively driven by threads through the first fixed plate 28. 8 and fixing plate 29, the two ends of the two transverse screws 31 are respectively rotatably connected to the inner walls of the two sides of the filter chamber 9, and the two ends of the two transverse screws 31 extend to the outside of the filter box 2. The guide strip plate 30 and the transverse screws 31 are set in the same direction. The two synchronous pulleys 32 are respectively fixedly installed on the same end of the two transverse screws 31. The synchronous belt 33 is sleeved on the two synchronous pulleys 32. The motor base 34 is fixedly installed on one side of the filter box 2. The drive motor 35 is fixedly installed on the motor base 34. The output shaft of the drive motor 35 is fixedly connected to the end of the corresponding transverse screw 31.

[0068] In this embodiment, fixing plate 28 and fixing plate 29 are fixedly installed on connecting pipe 23 and connecting pipe 18 respectively, serving as the support structure for the transverse drive power mechanism. The two transverse screws 31 also pass through fixing plate 28 and fixing plate 29 by threaded drive and are rotatably connected to the inner walls on both sides of the filter chamber 9 to provide power for transverse movement.

[0069] The drive motor 35 is fixedly mounted on one side of the filter box 2 via the motor mount 34, and its output shaft is fixedly connected to the end of one of the transverse screws 31. When the drive motor 35 starts, it drives the transverse screw 31 to rotate. Since the synchronous pulleys 32 are fixedly mounted on the same end of the two transverse screws 31 and connected by the synchronous belt 33, when one transverse screw 31 rotates, it will drive the other transverse screw 31 to rotate synchronously. In this way, the two transverse screws 31 can drive the connecting pipe 23 and connecting pipe 18 (and the high-pressure air nozzle 14 and impurity collecting pipe 15 on them) to move laterally under the guidance of the guide plate 30 at the same speed and direction.

[0070] In a further preferred embodiment of the present invention, the high-pressure air nozzle 14, the impurity collecting pipe 15, the first connecting pipe 18 and the second connecting pipe 23 are all rigid pipes, and the width of the frame side of the rectangular frame 11 is greater than the width of the high-pressure air nozzle 14, the impurity collecting pipe 15, the first connecting pipe 18, the second connecting pipe 23, the first fixing plate 28 and the second fixing plate 29.

[0071] In this embodiment, the high-pressure air nozzle 14, the impurity collecting pipe 15, the first connecting pipe 18, and the second connecting pipe 23 are all made of rigid pipe. Rigid pipes have the characteristics of structural stability, resistance to deformation, and strong pressure resistance, ensuring the smooth transmission of air and impurities, and also providing a solid support for the entire unblocking mechanism.

[0072] The width of the rectangular frame 11 is designed to be greater than the width of all the rigid pipes mentioned above. This design ensures that the high-pressure air nozzle 14, impurity collection pipe 15, connecting pipe one 18, connecting pipe two 23, fixing plate one 28, and fixing plate two 29 are hidden in the corner when not in operation.

[0073] In a further preferred embodiment of the present invention, the diameter of the external connecting pipe 25 is larger than the diameter of the air inlet hose 24, and the air inlet end of the external connecting pipe 25 is inclined along the windward direction, which is the direction from the air outlet end of the induced draft fan 7 to the exhaust connecting pipe 6.

[0074] In this embodiment, the diameter of the external connecting pipe 25 is designed to be larger than the diameter of the intake hose 24. This design has two main purposes: first, to reduce the airflow resistance in the pipe, allowing high-pressure air to flow more smoothly from the exhaust connecting pipe 6 through the external connecting pipe 25 into the intake hose 24, and then into the high-pressure air nozzle 14; second, to form an airflow buffer zone in the external connecting pipe 25, which helps to stabilize the airflow pressure and flow rate, and prevents the airflow from directly impacting the intake hose 24, causing damage or affecting the unblocking effect.

[0075] The air inlet of the external connecting pipe 25 is inclined in the windward direction, which is defined as the direction from the outlet of the induced draft fan 7 to the exhaust connecting pipe 6. This design is to better capture and utilize the airflow generated by the induced draft fan 7, allowing high-pressure air to enter the external connecting pipe 25 more efficiently. The inclined air inlet also guides the airflow along the inner wall of the pipe, reducing eddies and turbulence, and further improving the stability and efficiency of the airflow.

[0076] The high-pressure air inlet mechanism and the lateral drive mechanism work together to achieve precise unclogging and impurity collection of the air filter 12. During this process, the optimized design of the external connecting pipe 25 further improves the efficiency and stability of high-pressure air inlet, ensuring the consistency and reliability of the unclogging effect.

[0077] In a further preferred embodiment of the present invention, both the first fixing plate 28 and the second fixing plate 29 are provided with rectangular sliding openings and threaded holes, the guide plate 30 slides through the corresponding rectangular sliding openings, and the transverse screw 31 passes through the corresponding threaded holes by thread engagement.

[0078] In this embodiment, the design of the rectangular sliding opening and threaded hole, the sliding installation of the guide plate 30 in the rectangular sliding opening, and the threaded connection of the transverse screw 31 together ensure the precise guidance and stable movement of the transverse mechanism. This ensures the precise unblocking and impurity collection of the high-pressure air nozzle 14 and the impurity collecting pipe 15 on the air filter 12.

[0079] In a further preferred embodiment of the present invention, an activated carbon layer 36 is detachably installed in the filter chamber 9, and the activated carbon layer 36 is located above the air filter 12 and the adsorption filter unblocking mechanism.

[0080] In this embodiment, a removable activated carbon layer 36 is designed inside the filter chamber 9. This design allows the activated carbon layer 36 to be easily installed and removed, making it convenient for users to replace or clean it according to actual needs, thereby maintaining its good filtration performance.

[0081] The activated carbon layer 36 is placed above the air filter 12 and the adsorption filter unblocking mechanism. This ensures that the air passes through the activated carbon layer 36 after passing through the air filter 12, effectively removing odors, harmful gases, and other impurities from the air.

[0082] In a further preferred embodiment of the present invention, the catalytic purification box 3 is divided into an upper photocatalytic purification chamber 37 and a lower spray chamber 38. The photocatalytic purification chamber 37 is connected to the exhaust pipe 6, and the spray chamber 38 is connected to the air exhaust pipe 8. Multiple rows of photocatalytic lamps 39 and catalytic reaction layers 40 are installed alternately in the photocatalytic purification chamber 37 for catalytic purification of air. The photocatalytic purification chamber 37 and the spray chamber 38 are connected by a connecting bend pipe 41.

[0083] In this embodiment, the interior of the catalytic purification chamber 3 is cleverly divided into an upper photocatalytic purification chamber 37 and a lower spray chamber 38. The photocatalytic purification chamber 37 is connected to the exhaust duct 6 and is used to receive the air to be purified from the exhaust duct 6; the spray chamber 38 is connected to the air exhaust duct 8 and is used to discharge the purified air. At the same time, the photocatalytic purification chamber 37 and the spray chamber 38 are connected by a connecting bend 41 to ensure that air can flow smoothly between the two chambers.

[0084] Inside the photocatalytic purification chamber 37, we have staggered multiple rows of photocatalytic lamps 39 and catalytic reaction layers 40. The photocatalytic lamps 39 emit light of a specific wavelength, activating the catalyst on the catalytic reaction layer 40, causing it to produce a strong oxidation-reduction reaction, thereby catalytically purifying harmful substances in the air.

[0085] A spray system is installed inside the spray chamber 38. When air enters the spray chamber 38 from the photocatalytic purification chamber 37 through the guide bend 41, the spray device sprays purification liquid into the air to further remove residual impurities and odors from the air, and finally discharges the purified air through the air exhaust pipe 8.

[0086] To further improve the performance of this device, in addition to the above-mentioned solutions, this solution also includes the following embodiments:

[0087] In another embodiment of the present invention, a water filter screen 42 is fixedly installed inside the spray chamber 38. The installation height of the water filter screen 42 is lower than that of the air exhaust pipe 8 and the guide bend pipe 41. A water pump 43 is installed below the water filter screen 42. A spray pipe 44 is installed at the drain end of the water pump 43. The spray pipe 44 extends above the exhaust end of the guide bend pipe 41 and is equipped with a water distribution pipe 45. Multiple atomizing nozzles 46 are installed on the water distribution pipe 45. A sewage pipe 47 is installed at the bottom of the catalytic purification box 3. The sewage pipe 47 is connected to the spray chamber 38. A water supply pipe 48 is installed on the side of the catalytic purification box 3. The water supply pipe 48 is connected to the spray chamber 38.

[0088] In this embodiment, a water filter screen 42 is fixedly installed inside the spray chamber 38. Its installation height is lower than that of the air exhaust pipe 8 and the guide bend pipe 41 to ensure that the purified air does not carry water droplets out. A water pump 43 is installed below the water filter screen 42 to extract the accumulated water in the spray chamber 38 and recycle it through the spray pipe 44 connected to the drain end.

[0089] The spray pipe 44 extends above the exhaust end of the guide bend 41 and is fitted with a water distribution pipe 45, on which multiple atomizing nozzles 46 are arranged. This design allows the water pumped by the water pump 43 to pass through the spray pipe 44 and the water distribution pipe 45, and finally be sprayed evenly in atomized form onto the air entering the spray chamber 38 through the guide bend 41, further removing residual impurities in the air.

[0090] To maintain the cleanliness of the water in the spray chamber 38, a drain pipe 47 is installed at the bottom of the catalytic purification tank 3, which is connected to the spray chamber 38 to discharge accumulated waste. Simultaneously, a water supply pipe 48 is installed on the side of the catalytic purification tank 3, also connected to the spray chamber 38, to replenish fresh water and ensure the continuous and stable operation of the spray system.

[0091] Through the interception of water by the filter screen 42, the recycling of water by the pump 43, and the uniform spraying by the atomizing nozzle 46, residual impurities and odors in the air are further removed, improving the purification effect.

[0092] In another embodiment of the present invention, an air guide plate 49 is fixedly installed inside the spray chamber 38. The air guide plate 49 is correspondingly arranged with the air exhaust pipe 8. An operating door 50 is detachably installed on one side of both the filter box 2 and the catalytic purification box 3. The two operating doors 50 correspond to the filter chamber 9 and the photocatalytic purification chamber 37, respectively.

[0093] In this embodiment, an air guide plate 49 is fixedly installed inside the spray chamber 38, and the air guide plate 49 is correspondingly arranged with the air exhaust pipe 8. The function of the air guide plate 49 is to guide the air purified by the spray to flow to the air exhaust pipe 8, so as to prevent the incoming air from rushing directly. The inclined arrangement also blocks some water vapor.

[0094] To facilitate user maintenance and cleaning of the interior of filter box 2 and catalytic purification box 3, detachable operating doors 50 are installed on one side of each. The two operating doors 50 correspond to filter chamber 9 and photocatalytic purification chamber 37 respectively, allowing users to easily open the operating doors 50 and enter filter chamber 9 and photocatalytic purification chamber 37 to perform necessary maintenance.

[0095] In another embodiment of the present invention, two cleaning plates 51 are fixedly installed on the top of the impurity collecting pipe 15. The two cleaning plates 51 are respectively located on both sides of the plurality of impurity collecting covers 17. The two cleaning plates 51 are used to clean the lower surface of the air filter 12 following the lateral movement of the impurity collecting pipe 15.

[0096] In this embodiment, two cleaning plates 51 are fixedly installed on the top of the impurity collecting pipe 15. These two cleaning plates 51 are located on both sides of the multiple impurity collecting covers 17, respectively, to ensure that the cleaning plates 51 can fully contact and clean the lower surface of the air filter 12 when the impurity collecting pipe 15 moves laterally.

[0097] When the impurity collecting pipe 15 moves laterally under the drive mechanism, the cleaning plate 51 moves accordingly. The bottom edge of the cleaning plate 51 maintains a certain contact pressure with the lower surface of the air filter 12, thereby effectively cleaning the dust, impurities and other debris attached to the lower surface of the air filter 12.

[0098] The introduction of the cleaning plate 51 enables automatic cleaning of the lower surface of the air filter 12. This not only reduces the frequency and difficulty of manual cleaning but also improves cleaning efficiency, ensuring the continuous and efficient filtration performance of the air filter 12.

[0099] Regularly cleaning the lower surface of the air filter 12 can effectively prevent dust and impurities from accumulating on the filter, thus avoiding clogging and damage. This helps extend the lifespan of the air filter 12 and reduce replacement costs.

[0100] In another embodiment of the present invention, a plurality of electrostatic adsorption rods 52 are provided below the activated carbon layer 36. The plurality of electrostatic adsorption rods 52 are detachably installed in the filter chamber 9. The filter chamber 9 is provided with a cleaning mechanism. The cleaning mechanism includes a dust scraper plate 53 slidably sleeved on the plurality of electrostatic adsorption rods 52. A synchronization plate 54 is fixedly installed at the bottom of the dust scraper plate 53. The bottom of the synchronization plate 54 is fixedly connected to the fixed plate 28. A cleaning brush 55 is installed at the top of the dust scraper plate 53. The cleaning brush 55 is in contact with the bottom of the activated carbon layer 36.

[0101] In this embodiment, to further enhance the air purification effect and improve the ease of maintenance, multiple electrostatic adsorption rods 52 are arranged below the activated carbon layer 36. These electrostatic adsorption rods 52 are detachably installed in the filter chamber 9. Furthermore, the cleaning mechanism includes a scraper plate 53 slidably sleeved on the multiple electrostatic adsorption rods 52. The bottom of the scraper plate 53 is fixedly connected to the fixing plate 28 via a synchronization plate 54. A cleaning brush 55 is installed on the top of the scraper plate 53 to maintain contact with the bottom of the activated carbon layer 36.

[0102] By introducing the electrostatic adsorption rod 52, the principle of electrostatic adsorption is utilized to efficiently adsorb tiny particles and harmful substances in the air, further enhancing the air purification effect. At the same time, the detachable design of the electrostatic adsorption rod 52 allows users to easily clean or replace it to maintain its continuous adsorption capacity.

[0103] The cleaning mechanism is designed so that the sliding scraper plate 53 moves along multiple electrostatic adsorption rods 52 via the moving synchronous plate 54, thereby using the cleaning brush 55 to clean the bottom of the activated carbon layer 36. This design not only simplifies the maintenance process but also improves maintenance efficiency, ensuring the continuous and stable operation of the equipment.

[0104] In another embodiment of the present invention, the filter box 2 is provided with a filter bag beating mechanism. The filter bag beating mechanism includes a cam shaft 56 rotatably mounted on the other side of the impurity collection chamber 10 opposite to the filter bag loading and unloading door 21. A beating cam 57 is fixedly mounted on a section of the cam shaft 56 located inside the impurity collection chamber 10 for beating the impurity collection filter bag 20 that is expanded by blowing air. A power transmission shaft 58 is rotatably mounted on the motor base 34. A bevel gear 59 is fixedly sleeved on both the power transmission shaft 58 and the corresponding transverse screw 31. The two bevel gears 59 mesh with each other. A synchronous pulley 60 is fixedly mounted on the end of the cam shaft 56 located outside the filter box 2 and on the power transmission shaft 58. The same synchronous belt 61 is sleeved on multiple synchronous pulleys 60.

[0105] In this embodiment, to improve the dust removal efficiency of the impurity collection filter bag 20 and ensure continuous and efficient air purification capabilities, a filter bag beating mechanism is designed and integrated into the filter box 2. The core components of this mechanism include a camshaft 56 rotatably mounted in the impurity collection chamber 10, with a beating cam 57 fixedly mounted on the camshaft 56. Furthermore, a power transmission shaft 58 is rotatably mounted on the motor base 34. The power transmission shaft 58 and the transverse screw 31 transmit power via a bevel gear 59, while the camshaft 56 and the power transmission shaft 58 rotate synchronously via a synchronous pulley 60 and a synchronous belt 61. When the drive motor 35 drives the transverse screw 31 to rotate, it drives the power transmission shaft 58 and the camshaft 56 to rotate synchronously, thereby driving the beating cam 57 to beat the expanded impurity collection filter bag 20.

[0106] The design of the filter bag tapping mechanism allows the impurity collection filter bag 20 to be tapped by the tapping cam 57 while it is expanding with airflow. This effectively removes dust and impurities attached to the filter bag, improves the dust removal efficiency, and thus extends the service life of the filter bag and reduces the replacement frequency.

[0107] By utilizing the power transmission path of the transverse screw 31, combined with transmission components such as the bevel gear 59, synchronous pulley 60, and synchronous belt 61, the linkage between the filter bag beating mechanism and the transverse mechanism is realized, enabling the entire device to maintain a compact structure while possessing more comprehensive functions.

[0108] In summary, compared with related technologies, this device uses an adsorption-type filter cleaning mechanism to unclog the filter holes 13 of the air filter 12, preventing blockage. It achieves this by using high-pressure air to flow in from above and collecting impurities from below. Unlike traditional methods that only clean the surface, impurities are collected uniformly into the impurity collection chamber 10, resulting in better cleaning. This step ensures the continuous and efficient filtration capacity of the air filter 12, guaranteeing the stability of the purification effect. Furthermore, this solution not only catalytically purifies air but also purifies wastewater and other solutions, meeting the needs of multiple applications.

[0109] In this invention, the photocatalytic purification equipment described above is used to treat wastewater and waste gas.

[0110] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0111] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A photocatalytic purification device, characterized in that, include: A filter box, a catalytic purification box, and a solution reaction tank are fixed to the equipment frame. The solution reaction tank is installed at the tank mounting position on the equipment frame and is used to purify wastewater. The filter box and the catalytic purification box work together to purify exhaust gas. An air inlet pipe is provided on one side of the filter box. An air inlet connecting pipe and an air outlet connecting pipe are respectively provided on the top of the filter box and the catalytic purification box. The air inlet connecting pipe and the air outlet connecting pipe are connected to the same exhaust fan, which is used to draw the filtered air from the filter box and discharge it into the catalytic purification box for catalytic purification. An air exhaust pipe is provided on one side of the catalytic purification box and is connected to the solution reaction tank to introduce clean air. The filter box is divided into a filter chamber and an impurity collection chamber. The filter chamber is connected to the air inlet pipe and the air inlet connecting pipe. The impurity collection chamber is located at the bottom of the filter box and below the filter chamber. The filter chamber and the impurity collection chamber are not connected to each other. A rectangular frame is fixedly installed inside the filter chamber. An air filter screen is fixedly installed inside the rectangular frame. The air filter screen has multiple filter holes evenly distributed in multiple rows. An adsorption-type filter cleaning mechanism is provided inside the filter chamber and is used to clear the filter holes of the air filter. The adsorption-type filter cleaning mechanism includes a high-pressure air nozzle and a sludge collecting pipe. The high-pressure air nozzle and the sludge collecting pipe are slidably disposed above and below the rectangular frame and the air filter, respectively. The high-pressure air nozzle and the sludge collecting pipe can slide laterally along the distribution direction of the filter holes of the air filter. The bottom of the high-pressure air nozzle is provided with multiple air spray hoods, and the top of the sludge collecting pipe is provided with multiple sludge collecting hoods. The number of air spray hoods and sludge collecting hoods is the same as the number of rows of filter holes and their positions correspond. The corresponding air spray hoods and sludge collecting hoods are located on the same longitudinal line and can block the same filter hole at the same time. The diameter of the air spray hood opening is larger than the diameter of the filter hole, and the diameter of the sludge collecting hood opening is larger than the diameter of the air spray hood opening. The adsorption filter screen clearing mechanism also includes a connecting pipe, an impurity discharge hose, an impurity collection filter bag, a high-pressure air inlet mechanism, and a transverse drive mechanism. The connecting pipe is connected to the impurity gathering pipe, and the impurity discharge hose is connected to the connecting pipe and extends to the impurity collection chamber. The impurity collection chamber is provided with an impurity collection filter bag, and the bag opening of the impurity collection filter bag is fitted onto the impurity discharge end of the impurity discharge hose. A filter bag loading and unloading door is detachably installed on one side of the bottom of the filter box, and the filter bag loading and unloading door has an exhaust hole. The high-pressure air introduction mechanism includes a second connecting pipe, an air inlet hose, an external connecting pipe, a first regulating valve, and a second regulating valve. The second connecting pipe is connected to the high-pressure air nozzle, the air inlet hose is connected to the second connecting pipe, the external connecting pipe penetrates the wall of the filter box, the air inlet end is connected to the exhaust connecting pipe, and the exhaust end is connected to the air inlet end of the air inlet hose. The first regulating valve is located on the exhaust connecting pipe, the air inlet end of the external connecting pipe is located between the induced draft fan and the first regulating valve, and the second regulating valve is located on the external connecting pipe. The transverse drive mechanism includes a fixed plate 1, a fixed plate 2, two guide plates, two transverse screws, two synchronous pulleys 1, a synchronous belt 1, a motor base, and a drive motor. The fixed plate 1 and fixed plate 2 are respectively fixedly installed on the connecting pipe 2 and the connecting pipe 1. The two guide plates slide through the fixed plate 1 and fixed plate 2 respectively. The two ends of the two guide plates are respectively fixedly connected to the inner walls of the two sides of the filter chamber. The two transverse screws are respectively threaded through the fixed plate 1 and fixed plate 2. The two ends of the two transverse screws are respectively rotatably connected to the inner walls of the two sides of the filter chamber. Both ends of the two transverse screws extend outside the filter box. The guide plates and transverse screws are set in the same direction. The two synchronous pulleys 1 are respectively fixedly installed on the same end of the two transverse screws. The synchronous belt is fitted on the two synchronous pulleys 1. The motor base is fixedly installed on one side of the filter box. The drive motor is fixedly installed on the motor base. The output shaft of the drive motor is fixedly connected to the end of the corresponding transverse screw. An activated carbon layer is detachably installed inside the filter chamber. The activated carbon layer is located above the air filter and the adsorption filter unblocking mechanism. The catalytic purification box is divided into an upper photocatalytic purification chamber and a lower spray chamber. The photocatalytic purification chamber is connected to the exhaust pipe, and the spray chamber is connected to the air exhaust pipe. Multiple rows of photocatalytic lamps and catalytic reaction layers are installed alternately inside the photocatalytic purification chamber for catalytic air purification. The photocatalytic purification chamber and the spray chamber are connected by a connecting bend. Two cleaning plates are fixedly installed on the top of the impurity collecting pipe. The two cleaning plates are located on both sides of the multiple impurity collecting hoods. The two cleaning plates are used to clean the lower surface of the air filter as the impurity collecting pipe moves laterally. Below the activated carbon layer are multiple electrostatic adsorption rods, all of which can be detachably installed inside the filter chamber. The filter chamber is equipped with a cleaning mechanism, which includes a scraper plate that is slidably sleeved on the multiple electrostatic adsorption rods. A synchronization plate is fixedly installed at the bottom of the scraper plate, and the bottom of the synchronization plate is fixedly connected to a fixed plate. A cleaning brush is installed at the top of the scraper plate, and the cleaning brush is in contact with the bottom of the activated carbon layer. A power transmission shaft is rotatably mounted on the motor base. The power transmission shaft and the transverse screw transmit power through a bevel gear, while the camshaft and the power transmission shaft rotate synchronously through a second synchronous pulley and a second synchronous belt. A tapping cam is fixedly installed on a section of the camshaft located inside the impurity collection chamber, which is used to tap the impurity collection filter bag as it expands due to the blowing air.

2. The photocatalytic purification device as described in claim 1, characterized in that, The high-pressure air nozzle, impurity collecting pipe, connecting pipe one, and connecting pipe two are all rigid pipes. The width of the frame side of the rectangular frame is greater than the width of the high-pressure air nozzle, impurity collecting pipe, connecting pipe one, connecting pipe two, fixing plate one, and fixing plate two.

3. The photocatalytic purification device as described in claim 1, characterized in that, The diameter of the external connecting pipe is larger than the diameter of the air inlet hose. The air inlet end of the external connecting pipe is inclined in the windward direction, which is the direction from the air outlet of the duct fan to the exhaust connecting pipe.

4. The photocatalytic purification device as described in claim 1, characterized in that, Both the first and second fixing plates are provided with rectangular sliding openings and threaded holes. The guide plate slides through the corresponding rectangular sliding opening, and the transverse screw passes through the corresponding threaded hole by thread engagement.

5. The photocatalytic purification equipment as described in any one of claims 1-4 is used to treat wastewater and waste gas.

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