Sewage treatment device with self-cleaning function

Abstract

The utility model relates to sewage treatment technical field, more particularly, sewage treatment device with self -cleaning function. The device includes box body subassembly, treatment subassembly and cleaning subassembly. Box body subassembly surrounds and forms the hollow containing cavity, treatment subassembly includes photocatalyst unit and purple light unit, photocatalyst unit is connected with box body subassembly, purple light unit is connected with box body subassembly, the light of purple light unit emission irradiates photocatalyst unit, photocatalyst unit is located in containing cavity, purple light unit is located in containing cavity, cleaning subassembly is connected with box body subassembly, photocatalyst unit, cleaning subassembly and purple light unit are arranged in turn and are spaced, and sewage treatment device with self -cleaning function includes cleaning state, and the cleaning state includes the liquid that cleaning subassembly sprays covers the surface of photocatalyst unit and purple light unit. In this way, the problem of poor sewage treatment effect is solved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to a wastewater treatment device with a self-cleaning function. Background Technology

[0002] The discharge of wastewater continues to increase, containing large amounts of organic pollutants that pose a serious threat to the ecological environment and human health. Ultraviolet (UV) photocatalytic oxidation technology is widely used in wastewater treatment due to its high degradation efficiency and lack of secondary pollution. UV photocatalytic oxidation technology mainly consists of a UV light source and photocatalytic materials. Pollutant degradation is achieved through the synergistic effect of the UV light source and photocatalytic materials. When UV light of a specific wavelength irradiates the surface of the photocatalytic material, it generates a large number of highly oxidizing active substances on the surface, which react with the organic pollutants in the wastewater through oxidation-reduction reactions, thereby achieving efficient degradation and purification of organic pollutants in the wastewater.

[0003] However, the treatment effect of ultraviolet photocatalytic oxidation wastewater treatment technology is easily affected by impurities in the wastewater. The core reason for this problem is that the catalytic reaction is dependent on ultraviolet light irradiation conditions. In actual wastewater treatment, impurities gradually deposit on the surface of the ultraviolet light source and the photocatalyst material. As the amount of deposits increases, the transmission path of ultraviolet light is blocked, preventing ultraviolet light from fully reaching the surface of the photocatalyst. This significantly reduces the amount of active substances generated by the photocatalyst, leading to a decrease in the degradation efficiency of organic pollutants and ultimately resulting in poor wastewater treatment performance. Utility Model Content

[0004] To address the problem of poor wastewater treatment efficiency, this utility model provides a wastewater treatment device with a self-cleaning function, comprising: A housing assembly that surrounds and forms a hollow receiving cavity; The processing component includes a photocatalyst unit and a violet light unit; the photocatalyst unit is connected to the housing assembly; the violet light unit is connected to the housing assembly; the light emitted by the violet light unit irradiates the photocatalyst unit; the photocatalyst unit is located within the receiving cavity; the violet light unit is located within the receiving cavity. A cleaning assembly is connected to the housing assembly; the photocatalyst unit, the cleaning assembly, and the ultraviolet light unit are arranged sequentially at intervals. The wastewater treatment device with self-cleaning function includes a cleaning state; the cleaning state includes the liquid sprayed by the cleaning component covering the surfaces of the ultraviolet light unit and the photocatalyst unit.

[0005] In some embodiments, the cleaning assembly includes a moving unit and a cleaning unit; the cleaning unit is slidably connected to the moving unit; the moving unit is connected to the housing assembly; The cleaning state includes the moving unit driving the cleaning unit to move along the height direction of the housing assembly, so that the liquid sprayed by the cleaning unit covers the surface of the ultraviolet light unit and the photocatalyst unit.

[0006] In some embodiments, the cleaning unit includes a plurality of first spray holes, a plurality of second spray holes, and a tube body; the tube body is connected to the moving unit; the plurality of first spray holes are spaced apart on the tube body; the plurality of second spray holes are spaced apart on the tube body; The cleaning state also includes the first spray hole spraying direction being towards the photocatalyst unit; and the second spray hole spraying direction being towards the ultraviolet light unit.

[0007] In some embodiments, multiple sets of the processing components and the cleaning components are provided; the multiple sets of processing components are distributed at intervals, and each set of processing components is connected to the housing component; the multiple sets of cleaning components correspond one-to-one with the multiple sets of processing components.

[0008] In some embodiments, the housing assembly includes a housing unit and a transmission unit; the housing unit surrounds and forms a hollow receiving cavity; the transmission unit includes an inlet pipe and an outlet pipe; the inlet pipe and the outlet pipe are respectively connected to the receiving cavity; The cleaning state includes the direction of the inlet pipe toward the outlet pipe, and the spray flow rate of the cleaning components corresponding to the multiple sets of processing components gradually decreases; the spray flow rate of the cleaning component closer to the inlet pipe is greater than the spray flow rate of the cleaning component closer to the outlet pipe.

[0009] In some embodiments, the diameter of the first spray hole is larger than the diameter of the second spray hole.

[0010] In some embodiments, the number of the second spray holes is greater than the number of the first spray holes.

[0011] In some embodiments, the moving unit includes a first sliding module, a second sliding module, a first driving module, and a second driving module; the first sliding module includes a first slide rail and a first slider; the first slide rail is connected to the inner wall of the housing assembly; the first slider is slidably connected to the first slide rail; the second sliding module includes a second slide rail and a second slider; the second slide rail is arranged parallel to the first slide rail; the second slide rail is connected to the housing assembly; the second slider is slidably connected to the second slide rail; both ends of the cleaning unit are respectively connected to the first slider and the second slider; the first driving module includes a first driving part and a first driving rod; the first driving part is connected to the housing assembly; one end of the first driving rod is connected to the first driving part, and the other end is connected to the first slider; the second driving module includes a second driving part and a second driving rod; the second driving part is arranged opposite to the first driving part; one end of the second driving rod is connected to the second driving part, and the other end is connected to the second slider; The cleaning state also includes the first driving unit driving the first slider to reciprocate along the first slide rail; and the second driving unit driving the second slider to reciprocate along the second slide rail.

[0012] In some embodiments, the cleaning assembly further includes a storage unit; the storage unit is connected to the bottom of the housing assembly; the storage unit is connected to one end of the moving unit; the storage unit forms a storage cavity; the size of the storage cavity is adapted to the cleaning unit.

[0013] In some embodiments, the storage unit includes a storage housing, a movable cover, and a third drive unit; the storage housing is connected to the housing assembly; an opening is formed on the side of the storage housing opposite to the housing assembly; the opening is aligned with the cleaning unit; the movable cover is connected to the opening of the storage housing; and the third drive unit is electrically connected to the movable cover.

[0014] To address the problem of poor wastewater treatment efficiency, this utility model has the following advantages: A hollow enclosure is formed by surrounding the housing components, housing the photocatalytic unit, ultraviolet light unit, and cleaning component of the treatment assembly. The photocatalytic unit, cleaning component, and ultraviolet light unit are arranged sequentially and alternately. When the wastewater treatment device with self-cleaning function is in cleaning mode, the liquid sprayed by the cleaning component can cover the surfaces of the ultraviolet light unit and the photocatalytic unit, thereby effectively removing opaque impurities adhering to their surfaces. This prevents impurities from forming a barrier layer that blocks the light emitted by the ultraviolet light unit, ensuring that the light from the ultraviolet light unit can fully irradiate the photocatalytic unit and maintain the stable generation of highly oxidizing active substances on the surface of the photocatalytic unit. Ultimately, this solves the problem of insufficient ultraviolet light irradiation and poor wastewater treatment effect caused by impurity deposition, ensuring the efficiency of wastewater purification. Attached Figure Description

[0015] Figure 1 A schematic diagram of a wastewater treatment device with a self-cleaning function according to one embodiment is shown; Figure 2 It shows Figure 1 A schematic diagram of the second sliding module of the wastewater treatment device; Figure 3 It shows Figure 1 A top view of the wastewater treatment unit in the middle; Figure 4 It shows Figure 3 Cross-sectional view of the wastewater treatment unit in the diagram; Figure 5 It shows Figure 4 Enlarged view of wastewater treatment device A in the diagram.

[0016] Reference numerals: Box assembly 10; Box unit 11; Transmission unit 12; Water inlet pipe 121; Water outlet pipe 122; Processing component 20; Photocatalyst unit 21; Ultraviolet light unit 22; Cleaning component 30; Moving unit 31; First sliding module 311; First slide rail 3111; First slider 3112; Second sliding module 312; Second slide rail 3121; Second slider 3122; Cleaning unit 32; First spray hole 321; Second spray hole 322; Pipe body 323; Storage unit 33; Storage shell 331; Movable cover 332. Detailed Implementation

[0017] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0018] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0019] The treatment effect of ultraviolet photocatalytic oxidation wastewater treatment technology is easily affected by impurities in the wastewater. The core reason for this problem is that the catalytic reaction is dependent on ultraviolet light irradiation conditions. In actual wastewater treatment, impurities gradually deposit on the surface of the ultraviolet light source and the photocatalyst material. As the amount of deposits increases, the transmission path of ultraviolet light is blocked, preventing ultraviolet light from fully reaching the surface of the photocatalyst. This significantly reduces the amount of active substances generated by the photocatalyst, resulting in a decrease in the degradation efficiency of organic pollutants and ultimately poor wastewater treatment performance.

[0020] In this embodiment, as Figure 1 As shown, in order to solve the above problems, this utility model provides a sewage treatment device with a self-cleaning function, such as... Figure 1As shown, the wastewater treatment device with self-cleaning function includes a housing assembly 10, a treatment assembly 20, and a cleaning assembly 30.

[0021] The housing assembly 10 surrounds and forms a hollow containment cavity, ensuring that sewage can be treated within the containment cavity and preventing sewage from being directly discharged and causing environmental pollution.

[0022] The treatment component 20 includes a photocatalytic unit 21 and a UV light unit 22. The photocatalytic unit 21 is connected to the housing component 10, and the UV light unit 22 is also connected to the housing component 10. This ensures the stability of the installation of the housing component 10 with the photocatalytic unit 21 and the UV light unit 22, preventing positional shifts during wastewater treatment. This ensures that the light emitted by the UV light unit 22 irradiates the photocatalytic unit 21, generating a large amount of highly oxidizing active substances that react with organic pollutants in the wastewater through oxidation-reduction reactions, achieving efficient degradation and purification of organic pollutants. The photocatalytic unit 21 and the UV light unit 22 are both located within the housing cavity, ensuring that the photocatalytic unit 21 can be successfully triggered by the light emitted by the UV light unit 22 and react with the wastewater within the housing cavity to generate highly oxidizing active substances.

[0023] The cleaning component 30 is connected to the housing component 10. The photocatalyst unit 21, the cleaning component 30, and the ultraviolet light unit 22 are arranged in sequence at intervals to ensure that the cleaning component 30 can simultaneously clean the opaque impurities on the outer surfaces of the photocatalyst unit 21 and the ultraviolet light unit 22, so that the light emitted by the ultraviolet light unit 22 can smoothly irradiate the surface of the photocatalyst unit 21.

[0024] The wastewater treatment device with self-cleaning function includes a cleaning state. The cleaning state includes the liquid sprayed by the cleaning component 30 covering the surfaces of the ultraviolet light unit 22 and the photocatalytic unit 21, thereby rinsing the surfaces of the ultraviolet light unit 22 and the photocatalytic unit 21, thus avoiding the deposition of opaque impurities on their surfaces, which would block ultraviolet light and cause poor photocatalytic effect, ultimately ensuring the efficiency of wastewater treatment.

[0025] Furthermore, such as Figure 1 As shown, the cleaning assembly 30 includes a moving unit 31 and a cleaning unit 32. The cleaning unit 32 is slidably connected to the moving unit 31, enabling the cleaning unit 32 to have position adjustment capability. The moving unit 31 is connected to the housing assembly 10, ensuring the structural stability of the moving unit 31 during operation.

[0026] The cleaning process includes the moving unit 31 driving the cleaning unit 32 to move along the height direction of the housing assembly 10, expanding the spray range of the cleaning unit 32, so that the liquid sprayed by the cleaning unit 32 covers the surface of the ultraviolet light unit 22 and the photocatalytic unit 21 for comprehensive cleaning, thereby avoiding cleaning blind spots caused by fixed cleaning positions, ensuring that there are no opaque impurities left, and ultimately improving the efficiency of photocatalytic reaction and ensuring the stability of wastewater treatment effect.

[0027] Furthermore, such as Figure 5 As shown, the cleaning unit 32 includes multiple first spray holes 321, multiple second spray holes 322, and a tube body 323. The tube body 323 is connected to the moving unit 31. The tube body 323 serves as the mounting carrier for the first spray holes 321 and the second spray holes 322, and the connection between the tube body 323 and the moving unit 31 enables the overall movement of the cleaning unit 32. The multiple first spray holes 321 are spaced apart on the tube body 323, and the multiple second spray holes 322 are spaced apart on the tube body 323, so that the sprayed liquid forms a uniform coverage area and avoids cleaning blind spots.

[0028] The cleaning process also includes the first spray hole 321 spraying towards the photocatalyst unit 21 and the second spray hole 322 spraying towards the ultraviolet light unit 22, so that the sprayed liquid directly acts on the surface of the ultraviolet light unit 22 and the photocatalyst unit 21, effectively removing opaque impurities from the ultraviolet light unit 22 and the photocatalyst unit 21, preventing impurities from blocking the path of ultraviolet light irradiation, ensuring that the photocatalyst unit 21 can be fully activated to produce strong oxidizing active substances, and ensuring wastewater treatment efficiency.

[0029] Furthermore, such as Figure 1 , Figure 2 , Figure 3 As shown, multiple sets of treatment components 20 and cleaning components 30 are provided. The multiple sets of treatment components 20 are spaced apart, and each set of treatment components 20 is connected to the housing component 10. Multiple sets of cleaning components 30 correspond one-to-one with the multiple sets of treatment components 20. The spaced distribution design of the multiple sets of treatment components 20 increases the contact area with sewage, improving the overall sewage treatment efficiency. The connection of each set of treatment components 20 to the housing component 10 ensures installation stability. This allows for precise and thorough cleaning of each set of treatment components 20, avoiding the problem of incomplete cleaning of some components 20 due to dispersed cleaning areas, further ensuring the sewage treatment effect.

[0030] Furthermore, such as Figure 3 , Figure 4As shown, the housing assembly 10 includes a housing unit 11 and a transmission unit 12. The housing unit 11 surrounds and forms a hollow receiving cavity, providing a closed space for wastewater reaction. The transmission unit 12 includes an inlet pipe 121 and an outlet pipe 122. The inlet pipe 121 and the outlet pipe 122 are respectively connected to the receiving cavity to ensure a continuous flow path in the wastewater treatment process and to ensure the stable and continuous operation of the wastewater treatment device.

[0031] Since the wastewater has the highest impurity content when it flows in from the inlet pipe 121, the impurities gradually decrease as the treatment process progresses. Therefore, the cleaning state includes the direction from the inlet pipe 121 to the outlet pipe 122, and the spray flow rate of the cleaning components 30 corresponding to the multiple sets of treatment components 20 gradually decreases. The spray flow rate of the cleaning components 30 closer to the inlet pipe 121 is greater than that of the cleaning components 30 closer to the outlet pipe 122. That is, the design of the cleaning flow rate decreasing from the inlet pipe 121 to the outlet pipe 122 allows the treatment components 20 closer to the inlet (high-pollution area) to receive stronger cleaning power, while the treatment components 20 closer to the outlet (low-pollution area) have their flow rate reasonably controlled, ensuring both cleaning effect and avoiding water waste.

[0032] Furthermore, such as Figure 5 As shown, the aperture of the first spray hole 321 is larger than that of the second spray hole 322. The second spray hole 322 faces the ultraviolet light unit 22, while the first spray hole 321 faces the photocatalyst unit 21. Impurities on the surface of the ultraviolet light unit 22 have a more direct impact on light transmission. The smaller aperture allows the liquid sprayed from the second spray hole 322 to have a stronger impact force, which can more efficiently remove impurities attached to the surface of the ultraviolet light unit 22.

[0033] Furthermore, such as Figure 5 As shown, the number of second spray holes 322 is greater than the number of first spray holes 321. Combined with the smaller aperture design of the second spray holes 322, the increased number expands the cleaning coverage of the UV unit 22 surface, ensuring that all areas of the UV unit 22 are thoroughly rinsed. This avoids inadequate cleaning affecting the UV light emission effect, and matches the cleaning requirements of the photocatalyst unit 21, improving the overall targeting and comprehensiveness of the cleaning process.

[0034] Furthermore, such as Figure 1 , Figure 2As shown, the moving unit 31 includes a first sliding module 311, a second sliding module 312, a first driving module, and a second driving module. The first sliding module 311 includes a first slide rail 3111 and a first slider 3112. The first slide rail 3111 is connected to the inner wall of the housing assembly 10, ensuring its stability and ensuring the stability of the first slider 3112's movement when it is slidably connected to the first slide rail 3111. The second sliding module 312 includes a second slide rail 3121 and a second slider 3122. The second slide rail 3121 is arranged parallel to the first slide rail 3111, and the second slider 3122 is slidably connected to the second slide rail 3121. The two ends of the cleaning unit 32 are connected to the first slider 3112 and the second slider 3122 respectively, providing stable support and power to the cleaning unit 32. The parallel arrangement of the first slide rail 3111 and the second slide rail 3121 ensures the accurate movement trajectory of the cleaning unit 32, avoiding misalignment during cleaning. The first drive module includes a first drive unit and a first drive rod. The first drive unit is connected to the housing assembly 10, ensuring that it continuously provides a stable driving force to the first slider 3112, allowing the cleaning unit 32 to clean the outer surface of the processing assembly 20 from different positions. One end of the first drive rod is connected to the first drive unit, and the other end is connected to the first slider 3112. The first drive rod drives the movement of the first slider 3112, which in turn drives the cleaning unit 32. The second drive module includes a second drive unit and a second drive rod. The second drive unit is positioned opposite to the first drive unit. One end of the second drive rod is connected to the second drive unit, and the other end is connected to the second slider 3122. The first and second drive modules ensure that both ends of the cleaning unit 32 are driven synchronously, guaranteeing smooth movement of the cleaning unit 32 and improving operational reliability.

[0035] The cleaning process also includes the first drive unit driving the first slider 3112 to reciprocate along the first slide rail 3111. The second drive unit drives the second slider 3122 to reciprocate along the second slide rail 3121. This allows the cleaning unit 32 to thoroughly rinse the photocatalyst unit 21 and the ultraviolet light unit 22 over a wider range, ensuring that the surfaces can be repeatedly rinsed, improving the cleaning effect of impurities, and further ensuring the efficiency of the photocatalytic reaction.

[0036] Furthermore, such as Figure 4As shown, the cleaning assembly 30 also includes a storage unit 33. The storage unit 33 is connected to the bottom of the housing assembly 10. The storage unit 33 is also connected to one end of the moving unit 31. The storage unit 33 forms a storage cavity, the size of which is adapted to the cleaning unit 32. The wastewater treatment device with self-cleaning capability also includes a closed state. In the closed state, the cleaning unit 32 is located inside the storage cavity, preventing the cleaning unit 32 from being exposed to wastewater for a long time and being adhered to or corroded by impurities. The size of the storage cavity is adapted to the cleaning unit 32 to ensure stable storage. At the same time, the design of being located at the bottom of the housing assembly 10 does not occupy the core reaction space of wastewater treatment, making reasonable use of the internal space of the device.

[0037] Furthermore, such as Figure 4 As shown, the storage unit 33 includes a storage housing 331, a movable cover 332, and a third drive unit. The storage housing 331 is connected to the housing assembly 10. An opening is formed on the side of the storage housing 331 opposite to the housing assembly 10. The opening is aligned with the moving unit 31. The movable cover 332 is connected to the opening of the storage housing 331. The third drive unit is electrically connected to the movable cover 332. The storage housing 331 provides a basic storage structure, and the alignment of the opening with the moving unit 31 facilitates the smooth entry of the cleaning unit 32 into the storage cavity. The movable cover 332, under the control of the third drive unit, can open and close the opening. This facilitates the movement of the cleaning unit 32 in and out, and closing it after storage prevents sewage from entering the storage cavity, protecting the cleaning unit 32 from contamination and extending the overall service life of the device.

[0038] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A wastewater treatment device with a self-cleaning function, characterized in that, The wastewater treatment device with self-cleaning function includes: A housing assembly that surrounds and forms a hollow receiving cavity; The processing component includes a photocatalyst unit and a violet light unit; the photocatalyst unit is connected to the housing assembly; the violet light unit is connected to the housing assembly; the light emitted by the violet light unit irradiates the photocatalyst unit; the photocatalyst unit is located within the receiving cavity; the violet light unit is located within the receiving cavity. A cleaning assembly is connected to the housing assembly; the photocatalyst unit, the cleaning assembly, and the ultraviolet light unit are arranged sequentially at intervals. The wastewater treatment device with self-cleaning function includes a cleaning state; the cleaning state includes the liquid sprayed by the cleaning component covering the surfaces of the ultraviolet light unit and the photocatalyst unit.

2. A wastewater treatment device with self-cleaning function according to claim 1, characterized in that, The cleaning assembly includes a moving unit and a cleaning unit; the cleaning unit is slidably connected to the moving unit; the moving unit is connected to the housing assembly; The cleaning state includes the moving unit driving the cleaning unit to move along the height direction of the housing assembly, so that the liquid sprayed by the cleaning unit covers the surface of the ultraviolet light unit and the photocatalyst unit.

3. A wastewater treatment device with self-cleaning function according to claim 2, characterized in that, The cleaning unit includes a plurality of first spray holes, a plurality of second spray holes, and a pipe body; the pipe body is connected to the moving unit; the plurality of first spray holes are spaced apart on the pipe body; the plurality of second spray holes are spaced apart on the pipe body; The cleaning state also includes the first spray hole spraying direction being towards the photocatalyst unit; and the second spray hole spraying direction being towards the ultraviolet light unit.

4. A wastewater treatment device with self-cleaning function according to claim 3, characterized in that, Both the processing component and the cleaning component are provided in multiple sets; the multiple sets of processing components are distributed at intervals, and each set of processing components is connected to the housing component; the multiple sets of cleaning components correspond one-to-one with the multiple sets of processing components.

5. A wastewater treatment device with self-cleaning function according to claim 4, characterized in that, The housing assembly includes a housing unit and a transmission unit; the housing unit surrounds and forms a hollow receiving cavity; the transmission unit includes an inlet pipe and an outlet pipe; the inlet pipe and the outlet pipe are respectively connected to the receiving cavity; The cleaning state includes the direction of the inlet pipe toward the outlet pipe, and the spray flow rate of the cleaning components corresponding to the multiple sets of processing components gradually decreases; the spray flow rate of the cleaning component closer to the inlet pipe is greater than the spray flow rate of the cleaning component closer to the outlet pipe.

6. A wastewater treatment device with self-cleaning function according to claim 3, characterized in that, The diameter of the first spray hole is larger than the diameter of the second spray hole.

7. A wastewater treatment device with self-cleaning function according to claim 6, characterized in that, The number of the second spray holes is greater than the number of the first spray holes.

8. A wastewater treatment device with self-cleaning function according to claim 2, characterized in that, The moving unit includes a first sliding module, a second sliding module, a first driving module, and a second driving module. The first sliding module includes a first slide rail and a first slider. The first slide rail is connected to the inner wall of the housing assembly. The first slider is slidably connected to the first slide rail. The second sliding module includes a second slide rail and a second slider. The second slide rail is parallel to the first slide rail. The second slide rail is connected to the housing assembly. The second slider is slidably connected to the second slide rail. Both ends of the cleaning unit are connected to the first slider and the second slider, respectively. The first driving module includes a first driving part and a first driving rod. The first driving part is connected to the housing assembly. One end of the first driving rod is connected to the first driving part, and the other end is connected to the first slider. The second driving module includes a second driving part and a second driving rod. The second driving part is opposite to the first driving part. One end of the second driving rod is connected to the second driving part, and the other end is connected to the second slider. The cleaning state also includes the first driving unit driving the first slider to reciprocate along the first slide rail; and the second driving unit driving the second slider to reciprocate along the second slide rail.

9. A wastewater treatment device with self-cleaning function according to claim 8, characterized in that, The cleaning assembly also includes a storage unit; the storage unit is connected to the bottom of the housing assembly; the storage unit is connected to one end of the moving unit; the storage unit forms a storage cavity; the size of the storage cavity is adapted to the cleaning unit.

10. A wastewater treatment device with self-cleaning function according to claim 9, characterized in that, The storage unit includes a storage shell, a movable cover, and a third drive unit; the storage shell is connected to the box assembly; an opening is formed on the side of the storage shell opposite to the box assembly; the opening is aligned with the cleaning unit; The movable cover is connected to the opening of the storage shell; The third drive unit is electrically connected to the movable cover.

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