Self-cleaning photocatalytic sewage treatment equipment

Abstract

The invention discloses self-cleaning photocatalytic sewage treatment equipment which comprises a reaction cabin and an adsorption assembly, two fixing supports are symmetrically erected in the middle of the top end of the reaction cabin, passing grooves are formed in the sides, close to each other, of the two fixing supports, and a driving assembly and a fishing assembly are rotationally connected between the two fixing supports; a first driving motor is fixedly mounted at the bottom of the side wall of the reaction cabin, a control assembly is fixedly connected to the middle of the side wall of the reaction cabin, a stirring shaft is rotatably mounted in the bottom wall of the reaction cabin, a plurality of groups of stirring blades are fixedly connected to the outer side of the stirring shaft, and an air flotation assembly is fixedly connected to one end of the reaction cabin; two fixing blocks are symmetrically and fixedly connected to the side edge of the top end of the reaction cabin, a cleaning assembly is rotationally connected between the two fixing blocks, and a collecting assembly is fixedly installed at the other end of the reaction cabin, after sewage is purified by the device, precipitates in the sewage can be synchronously fished, the sewage treatment interval time is shortened, and the sewage treatment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to a self-cleaning photocatalytic sewage treatment device. Background Art

[0002] Sewage treatment is a process of purifying sewage to meet the water quality requirements for discharging into a certain water body or for reuse. By removing pollutants in the sewage, it reduces the pollution of water bodies such as rivers, lakes, and oceans, protects the living environment of aquatic organisms, and maintains ecological balance. After treatment, the sewage can reach a certain water quality standard and can be reused for agricultural irrigation, industrial cooling, urban greening, landscape water replenishment, etc., realizing the recycling of water resources, alleviating the problem of water resource shortage, effectively removing harmful substances such as pathogens and heavy metals in the sewage, preventing the spread of diseases through water bodies, ensuring the drinking water safety and physical health of humans, providing a stable water source guarantee for industrial production, and at the same time reducing economic losses caused by water pollution and promoting the sustainable development of the economy. There are various ways of sewage treatment. Among them, the photocatalytic sewage treatment method has become one of the methods with good prospects because it can completely mineralize many refractory organic pollutants, reduce the chemical oxygen demand and biochemical oxygen demand of wastewater, improve the biodegradability of wastewater, is conducive to subsequent biological treatment, requires no complex equipment and conditions such as high temperature and high pressure, has a relatively low operating cost, the treatment process is non-toxic and harmless, does not produce secondary pollution during the reaction process, and is relatively friendly to the environment.

[0003] When performing photocatalytic sewage treatment, it is necessary to introduce the pretreated sewage into the photocatalytic reactor, add a photocatalyst in the reactor, and provide appropriate lighting conditions. The photocatalyst generates photogenerated electrons and hole pairs under light illumination, triggering a series of redox reactions to degrade the pollutants in the sewage. After the photocatalytic reaction is completed, it is necessary to add an appropriate flocculant to the photocatalytic reactor to promote precipitation separation, and use a filtration method for solid-liquid separation to separate the treated water from the photocatalyst. In this process, it is usually necessary to transport the treated sewage again to filter the precipitated impurities in the water, and it is necessary to stop the machine for transportation and clean the reactor. The continuity of sewage treatment is poor, the sewage treatment efficiency is low, the labor consumption is large, and the working intensity is high. Summary of the Invention

[0004] The object of the present invention is to provide a self-cleaning photocatalytic sewage treatment device to solve the problems in the above-mentioned background technology. When performing photocatalytic sewage treatment, the pretreated sewage needs to be introduced into the photocatalytic reactor, a photocatalyst is added into the reactor, and appropriate lighting conditions are provided. The photocatalyst generates photo-generated electrons and hole pairs under light, triggering a series of redox reactions to degrade the pollutants in the sewage. After the photocatalytic reaction is completed, an appropriate flocculant needs to be added to the photocatalytic reactor to promote precipitation separation, and the solid-liquid separation is carried out by filtration to separate the treated water from the photocatalyst. In this process, the treated sewage usually needs to be transported again to filter the precipitated impurities in the water, and it is necessary to stop the machine for transportation and clean the reactor, resulting in poor continuity of sewage treatment, low sewage treatment efficiency, large manpower consumption, and high working intensity.

[0005] To achieve the above object, the present invention provides the following technical solution: A self-cleaning photocatalytic sewage treatment device includes a reaction chamber and an adsorption component. Two fixed brackets are symmetrically erected in the middle of the top of the reaction chamber. Through grooves are opened on one side of the two fixed brackets close to each other. A driving component and a salvage component are rotatably connected between the two fixed brackets. A first driving motor is fixedly installed at the bottom of the side wall of the reaction chamber. A control component is fixedly connected to the middle of the side wall of the reaction chamber. A stirring shaft is rotatably installed inside the bottom wall of the reaction chamber. A plurality of groups of stirring blades are fixedly connected to the outside of the stirring shaft. An air flotation component is fixedly connected to one end of the reaction chamber. Two fixed blocks are symmetrically and fixedly connected to the side of the top of the reaction chamber. A cleaning component is rotatably connected between the two fixed blocks. The other end of the reaction chamber is fixedly installed with a collection component. The treatment of sewage is concentrated in the same reaction chamber. At the same time, after the sewage is purified, the precipitation in the sewage can be salvaged synchronously, reducing the steps of manual participation, reducing the working intensity and shortening the sewage treatment interval time, and improving the sewage treatment efficiency.

[0006] Preferably, the adsorption component includes a filtration chamber. The filtration chamber is fixedly connected to the top of one end of the reaction chamber. An adsorption chamber is movably clamped inside the filtration chamber. Adsorption layers are equidistantly placed inside the adsorption chamber, reducing the absorption of light by colored substances or organic substances with light absorption effects, enabling more light energy to be utilized by the photocatalyst, and improving the photocatalytic reaction efficiency.

[0007] Preferably, two reinforcing support plates are symmetrically and fixedly connected to the bottom end of the filtration chamber. The other ends of the two reinforcing support plates are fixedly connected to one end of the reaction chamber. A liquid guide hole is opened on one side of the filtration chamber close to the reaction chamber. The liquid guide hole penetrates the side wall of the reaction chamber, enabling the sewage treated by adsorption to enter the reaction chamber, and facilitating the transportation of the sewage.

[0008] Preferably, the driving assembly includes a rotating shaft rotatably connected between two fixed brackets. Two mounting brackets are symmetrically and fixedly sleeved on the outer side of the rotating shaft. A plurality of spring-damping rotating shafts are fixedly connected to the ends of the two mounting brackets. By utilizing the characteristic that the spring-damping rotating shaft can automatically return to its original position after being stressed and rotated, the fishing frame automatically resets to maintain the fishing function.

[0009] Preferably, a second driving motor is fixedly installed on one side of a fixed bracket away from the rotating shaft. The output end of the second driving motor is fixedly connected to one end of the rotating shaft, and the rotation of the second driving motor provides the rotational power for the rotation of the rotating shaft.

[0010] Preferably, the fishing assembly includes three fishing frames rotatably connected to the ends of the spring-damping rotating shafts. A filter plate is fixedly installed inside the fishing frame through bolts. Meshing grooves are formed at the tops of the side walls of the three fishing frames. The filter plate is mainly used to fish and drain the flocs floating inside the reaction chamber.

[0011] Preferably, the control assembly includes a controller fixedly connected to the middle of the side wall of the reaction chamber. Connecting wires are connected to three sides of the controller. The controller cooperates with the connecting wires to control the first driving motor, the second driving motor, and the air pump.

[0012] Preferably, the air flotation assembly includes a fixing plate fixedly connected to one end of the reaction chamber. An air pump is fixedly installed at the top of the fixing plate. A plurality of air pipes are connected to the side of the air pump in a communicating manner. The other ends of the plurality of air pipes are connected to a distributing plate in a communicating manner. A plurality of one-way valves are connected to the side of the distributing plate away from the air pipes in a communicating manner. The one-way valves are communicated with the side wall of the reaction chamber. Bubbles are generated by the air pump to ventilate the reaction chamber, so that the sediment floats on the water surface for easy cleaning.

[0013] Preferably, the cleaning assembly includes a driven gear rotatably connected to the inner side wall of a fixed block. A cleaning roller is fixedly connected to the side of the driven gear away from the fixed block. The driven gear is meshed with a driving gear rotatably connected to the inner side wall of a fixed block. The driving gear is meshed with the meshing groove. After the driven gear and the driving gear are meshed, the cleaning roller is driven to rotate to clean the substances on the filter plate, so that the sediment slides off the filter plate.

[0014] Preferably, the collection assembly includes a collection box fixedly installed at the other end of the reaction chamber. A placement box is movably clamped inside the collection box. A handle is fixedly installed on the side of the placement box away from the reaction chamber, which is convenient for the unified treatment of the collected substances.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] Through the designed second driving motor, rotating shaft, mounting bracket, spring-damping rotating shaft, fishing frame, meshing groove, filter plate, fixed block, driven gear, cleaning roller, and driving gear, the second driving motor rotates to drive the rotating shaft and mounting bracket to rotate, thereby driving the fishing frame to rotate, fishing the substances inside the reaction chamber, so that the substances inside the reaction chamber are on the surfaces of the fishing frame and the filter plate. When the fishing frame rotates with the rotating shaft, it contacts the cleaning roller, causing the fishing frame to rotate a second time. The meshing groove meshes with the driving gear, thereby driving the driven gear to rotate and driving the cleaning roller to scrape off the substances on the surface of the filter plate, making them enter the placement box for convenient subsequent unified collection. Automatic fishing is realized during sewage treatment, which is beneficial to shortening the processing time interval of sewage treatment. By using machinery instead of workers, the number of manual participation steps is reduced, the work intensity and manpower consumption are lowered, and the efficiency of sewage treatment is improved;

[0017] Through the designed adsorption chamber and adsorption layer, the sewage is pre-treated. The adsorption layer adsorbs colored substances or organic substances that have an absorption effect on light, reducing the absorption of light, enabling more light energy to be utilized by the photocatalyst, improving the photocatalytic reaction efficiency. At the same time, the organic pollutants in the sewage are adsorbed on its surface, which is beneficial to the progress of the photocatalytic reaction, accelerating the degradation rate of pollutants, removing the substances that can poison the photocatalyst in the sewage, ensuring the activity of the photocatalyst, reducing the contact between the substances that can poison the photocatalyst and the photocatalyst, thereby protecting the activity of the photocatalyst, extending its service life, and reducing the cost of sewage treatment;

[0018] Air is introduced into the reaction chamber through the designed air pump, air pipe, air distribution plate, and one-way valve. Through highly dispersed micro-bubbles as carriers, the suspended pollutants in the water are adhered, making their density less than that of water and floating to the water surface, facilitating the subsequent fishing of impurities in the sewage and improving the fishing efficiency. Brief Description of the Drawings

[0019] Figure 1 It is a three-dimensional structure schematic diagram of the present invention;

[0020] Figure 2 It is the front view of the present invention;

[0021] Figure 3 It is the top view of the present invention;

[0022] Figure 4 It is a schematic diagram of the internal structure of the reaction chamber of the present invention;

[0023] Figure 5 It is of the present invention Figure 1 The partial enlarged structure schematic diagram at A in it;

[0024] Figure 6 It is the side view of the present invention;

[0025] Figure 7Schematic diagram of the controller position distribution according to the present invention;

[0026] Figure 8 According to the present invention Figure 1 Schematic diagram of the partial enlarged structure at position B in the present invention.

[0027] In the figure: 1, reaction chamber; 2, filtration chamber; 3, adsorption chamber; 4, adsorption layer; 5, controller; 6, first driving motor; 7, stirring shaft; 8, fixing plate; 9, air pump; 10, air pipe; 11, air distribution plate; 12, one-way valve; 13, strengthening support plate; 14, fixing bracket; 15, second driving motor; 16, rotating shaft; 17, mounting frame; 18, spring damping rotating shaft; 19, fishing frame; 20, meshing groove; 21, filter plate; 22, fixing block; 23, driven gear; 24, cleaning roller; 25, driving gear; 26, collection box; 27, placement box; 28, connecting wire; 29, liquid guiding hole; 30, through groove. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] Please refer to Figure 1-8 , the present invention provides a self-cleaning photocatalytic sewage treatment device, including a reaction chamber 1 and an adsorption assembly. Two fixing brackets 14 are symmetrically erected in the middle of the top end of the reaction chamber 1. Through grooves 30 are opened on one side of the two fixing brackets 14 close to each other. The opening of the through groove 30 is used to leave enough passing space for the rotation of the spring damping rotating shaft 18. A driving assembly and a fishing assembly are rotatably connected between the two fixing brackets 14. A first driving motor 6 is fixedly installed at the bottom of the side wall of the reaction chamber 1. A control assembly is fixedly connected to the middle of the side wall of the reaction chamber 1. A stirring shaft 7 is rotatably installed inside the bottom wall of the reaction chamber 1. A plurality of groups of stirring blades are fixedly connected to the outside of the stirring shaft 7. The stirring blades stir the sewage to accelerate the reaction rate of the sewage, the flocculant and the sewage treatment agent, accelerate the sewage treatment speed, and improve the sewage treatment efficiency. An air flotation assembly is fixedly connected to one end of the reaction chamber 1. Two fixing blocks 22 are symmetrically and fixedly connected to the side of the top end of the reaction chamber 1. A cleaning assembly is rotatably connected between the two fixing blocks 22. A collection assembly is fixedly installed at the other end of the reaction chamber 1.

[0030] Furthermore, the adsorption assembly includes a filtration chamber 2. The filtration chamber 2 is fixedly connected to the top of one end of the reaction chamber 1. An adsorption chamber 3 is movably clamped inside the filtration chamber 2. Adsorption layers 4 are equidistantly placed inside the adsorption chamber 3. Sewage is introduced into the filtration chamber 2 through a water pipe. The sewage contacts the adsorption chamber 3 and the adsorption layer 4 to remove harmful and colored substances in the sewage that affect the photocatalytic reaction, which is beneficial to ensuring a stable treatment effect and prolonging the service life of the photocatalytic reaction agent.

[0031] Furthermore, two reinforcing support plates 13 are symmetrically fixedly connected to the bottom end of the filter cabin 2, and the other ends of the two reinforcing support plates 13 are fixedly connected to one end of the reaction cabin 1. The arrangement of the reinforcing support plates 13 is beneficial to enhancing the rigidity and strength of the device and ensuring the stability of the device during use. A liquid guide hole 29 is provided on the side of the filter cabin 2 close to the reaction cabin 1. The liquid guide hole 29 runs through the side wall of the reaction cabin 1. The sewage adsorbed by the filter cabin 2 enters the interior of the reaction cabin 1 through the liquid guide hole 29.

[0032] Furthermore, the driving assembly includes a rotating shaft 16, which is rotatably connected between two fixed brackets 14. Two mounting brackets 17 are symmetrically fixedly sleeved on the outer side of the rotating shaft 16. Multiple spring damping rotating shafts 18 are fixedly connected to the ends of the two mounting brackets 17. When the rotating shaft 16 rotates, it drives the mounting brackets 17 and the spring damping rotating shafts 18 to rotate.

[0033] Furthermore, a second drive motor 15 is fixedly mounted on one side of a fixed bracket 14 away from the rotating shaft 16 , and an output end of the second drive motor 15 is fixedly connected to one end of the rotating shaft 16 , and the rotation of the second drive motor 15 drives the rotating shaft 16 to rotate.

[0034] Furthermore, the salvage assembly includes three groups of salvage frames 19, which are rotatably connected to the ends of the spring-damping shaft 18. The setting of the spring-damping shaft 18 allows the angle of the salvage frame 19 to change after being subjected to force, and the salvage frame 19 automatically resets when no force is applied, and continues to maintain the salvage effect. A filter plate 21 is fixed inside the salvage frame 19 by bolts. The filter plate 21 is used to salvage flocs floating on the surface of the sewage and make it adhere to the surface of the filter plate 21. The top of the side walls of the three salvage frames 19 are provided with an engagement groove 20.

[0035] Furthermore, the control component includes a controller 5, which is fixedly connected to the middle of the side wall of the reaction chamber 1. The three sides of the controller 5 are connected with connecting wires 28. The controller 5 supplies power and transmits control signals to the first drive motor 6, the second drive motor 15 and the air pump 9 through the connecting wires 28, thereby realizing start and stop control of the first drive motor 6, the second drive motor 15 and the air pump 9.

[0036] Further, the air flotation assembly includes a fixing plate 8, which is fixedly connected to one end of the reaction chamber 1. A gas pump 9 is fixedly installed at the top of the fixing plate 8. A plurality of air pipes 10 are connected to the side of the gas pump 9 in a communicating manner. The other ends of the plurality of air pipes 10 are connected to a distributing plate 11 in a communicating manner. A plurality of distributing plates 11 are connected to the side of the distributing plate 11 away from the air pipes 10 in a communicating manner. The setting of the distributing plate 11 prevents the sewage inside the reaction chamber 1 from flowing back and affecting the use of the gas pump 9. The one-way valve 12 is connected to the side wall of the reaction chamber 1 in a communicating manner. The settings of the distributing plate 11 and the one-way valve 12 realize multi-point air supply into the reaction chamber 1, making the bubble distribution wider and the air flotation effect better. When the gas pump 9 operates, it supplies air to the distributing plate 11 through the air pipes 10, and then the distributing plate 11 passes the air into the reaction chamber 1 through the one-way valve 12. After the bubbles enter the reaction chamber 1, they adhere to the suspended flocs in the water, making their density less than that of water and floating to the water surface.

[0037] Further, the cleaning assembly includes a driven gear 23, which is rotatably connected to the inner side wall of a fixing block 22. A cleaning roller 24 is fixedly connected to the side of the driven gear 23 away from the fixing block 22. The driven gear 23 is meshed with a driving gear 25, which is rotatably connected to the inner side wall of a fixing block 22. The driving gear 25 is meshed with the engaging groove 20. After the filter plate 21 rotates, the engaging groove 20 is meshed with the driving gear 25, so that the driven gear 23 rotates to drive the cleaning roller 24 to rotate. When the cleaning roller 24 rotates, the flocs on the surface of the filter plate 21 are scraped off.

[0038] Further, the collection assembly includes a collection box 26, which is fixedly installed at the other end of the reaction chamber 1. A placement box 27 is movably clamped inside the collection box 26. A handle is fixedly installed on the side of the placement box 27 away from the reaction chamber 1. The cleaned sewage flocs slide down from the filter plate 21 into the placement box 27. When it is necessary to clean the sewage flocs in the placement box 27, pull the handle to take out the placement box 27 from the collection box 26 and pour out the sewage flocs.

[0039] When the embodiment of the present application is in use:

[0040] The sewage is introduced into the interior of the filtration chamber 2 through a water pipe. The sewage contacts the adsorption chamber 3 and the adsorption layer 4 to remove harmful and colored substances in the sewage that affect the photocatalytic reaction. The sewage after being adsorbed by the filtration chamber 2 enters the interior of the reaction chamber 1 through the liquid guide hole 29. An appropriate amount of catalyst is added into the reaction chamber 1, and then through the controller 5, the first driving motor 6 is started to drive the stirring shaft 7 to rotate, agitating the sewage so that the sewage and the catalyst are fully contacted. Then an appropriate amount of flocculant is added into the reaction chamber 1 to make the sewage precipitate and transform into flocs. The controller 5 controls the operation of the air pump 9. The air pump 9 supplies air to the air distribution plate 11 through the air pipe 10. Then the air distribution plate 11 passes the air into the interior of the reaction chamber 1 through the one-way valve 12. After the bubbles enter the reaction chamber 1, they adhere to the suspended flocs in the water, making their density less than that of water and floating to the water surface. Then the controller 5 controls the second driving motor 15 to rotate. The rotation of the second driving motor 15 drives the rotation shaft 16 to rotate. When the rotation shaft 16 rotates, it drives the mounting frame 17 and the spring-damper rotating shaft 18 to rotate, thereby driving the fishing frame 19 and the filter plate 21 to rotate. After the filter plate 21 rotates, the substances inside the reaction chamber 1 are fished, so that the substances inside the reaction chamber 1 are on the surfaces of the fishing frame 19 and the filter plate 21. When the fishing frame 19 rotates with the rotation shaft 16, it contacts the cleaning roller 24 to make the fishing frame 19 rotate secondarily. At the same time, the engaging groove 20 and the transmission gear 25 are engaged, making the driven gear 23 rotate to drive the cleaning roller 24 to rotate. The cleaning roller 24 rotates to scrape off the flocs on the surface of the filter plate 21. The sewage flocs slide down from the filter plate 21 to the interior of the placement box 27. When it is necessary to clean the sewage flocs in the placement box 27, pull the handle to take out the placement box 27 from the collection box 26 and pour out the sewage flocs.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-cleaning photocatalytic sewage treatment device, comprising a reaction chamber (1) and an adsorption component, characterized in that: In the middle of the top of the reaction chamber (1), two fixed brackets (14) are symmetrically installed. Through grooves (30) are formed on one side of each of the two fixed brackets (14) close to each other. A driving assembly and a fishing assembly are rotatably connected between the two fixed brackets (14). A first driving motor (6) is fixedly installed at the bottom of the side wall of the reaction chamber (1). A control assembly is fixedly connected to the middle of the side wall of the reaction chamber (1). A stirring shaft (7) is rotatably installed inside the bottom wall of the reaction chamber (1). A plurality of stirring blades are fixedly connected to the outside of the stirring shaft (7). An air flotation assembly is fixedly connected to one end of the reaction chamber (1). Two fixed blocks (22) are symmetrically and fixedly connected to the side of the top of the reaction chamber (1). A cleaning assembly is rotatably connected between the two fixed blocks (22). A collection assembly is fixedly installed at the other end of the reaction chamber (1).

2. The self-cleaning photocatalytic sewage treatment equipment according to claim 1, wherein: The adsorption assembly includes a filter chamber (2), and the filter chamber (2) is fixedly connected to the top of one end of the reaction chamber (1). An adsorption chamber (3) is movably clamped inside the filter chamber (2). Adsorption layers (4) are placed at equal intervals inside the adsorption chamber (3).

3. The self-cleaning photocatalytic sewage treatment equipment according to claim 2, wherein: Two reinforcing support plates (13) are symmetrically and fixedly connected to the bottom end of the filter chamber (2). The other ends of the two reinforcing support plates (13) are fixedly connected to one end of the reaction chamber (1). A liquid guiding hole (29) is formed on one side of the filter chamber (2) close to the reaction chamber (1), and the liquid guiding hole (29) penetrates through the side wall of the reaction chamber (1).

4. The self-cleaning photocatalytic sewage treatment equipment according to claim 1, wherein: The driving assembly includes a rotating shaft (16), and the rotating shaft (16) is rotatably connected between the two fixed brackets (14). Two mounting brackets (17) are symmetrically and fixedly sleeved on the outside of the rotating shaft (16). A plurality of spring-damper rotating shafts (18) are fixedly connected to the ends of the two mounting brackets (17).

5. The self-cleaning photocatalytic sewage treatment equipment according to claim 1, wherein: A second driving motor (15) is fixedly installed on one side of the fixed bracket (14) away from the rotating shaft (16), and the output end of the second driving motor (15) is fixedly connected to one end of the rotating shaft (16).

6. The self-cleaning photocatalytic sewage treatment equipment according to claim 1, wherein: The fishing assembly includes three groups of fishing frames (19), and the three groups of fishing frames (19) are rotatably connected to the ends of the spring-damper rotating shafts (18). A filter plate (21) is fixedly installed inside the fishing frame (19) through bolts. Meshing grooves (20) are formed on the top of the side walls of the three fishing frames (19).

7. The self-cleaning photocatalytic sewage treatment equipment according to claim 1, wherein: The control assembly includes a controller (5), and the controller (5) is fixedly connected to the middle of the side wall of the reaction chamber (1). Connecting wires (28) are connected to three sides of the controller (5).

8. An auto-cleaning photocatalytic sewage treatment device according to claim 1, characterized in that: The air flotation assembly includes a fixing plate (8), and the fixing plate (8) is fixedly connected to one end of the reaction chamber (1). An air pump (9) is fixedly installed at the top of the fixing plate (8). A plurality of air pipes (10) are connected to the side of the air pump (9) in a communicating manner. The other ends of the plurality of air pipes (10) are connected to a distributing plate (11) in a communicating manner. A plurality of one-way valves (12) are connected to the side of the distributing plate (11) away from the air pipes (10) in a communicating manner, and the one-way valves (12) are communicated with the side wall of the reaction chamber (1).

9. The self-cleaning photocatalytic sewage treatment equipment according to claim 1, characterized in that: The cleaning assembly includes a driven gear (23), the driven gear (23) is rotatably connected to the inner side wall of a fixed block (22), a cleaning roller (24) is fixedly connected to the side of the driven gear (23) away from the fixed block (22), the driven gear (23) is meshed with a transmission gear (25), the transmission gear (25) is rotatably connected to the inner side wall of a fixed block (22), and the transmission gear (25) is meshed with a meshing groove (20).

10. A self-cleaning photocatalytic sewage treatment device according to claim 1, characterized in that: The collection assembly includes a collection box (26), the collection box (26) is fixedly installed at the other end of the reaction chamber (1), a placement box (27) is movably clamped inside the collection box (26), and a handle is fixedly installed on the side of the placement box (27) away from the reaction chamber (1).

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