Sewage treatment filter device

Abstract

The application discloses sewage treatment filtering device, relates to the technical field of sewage treatment, including rotating first filter cartridge and second filter cartridge through water tank, and first cleaning assembly arranged in the first filter cartridge and second cleaning assembly arranged above the second filter cartridge, the outer wall of the first filter cartridge is fixedly connected with spiral blade; The driving mechanism is arranged on the first support base, and the driving mechanism is connected with the first filter cartridge and the second filter cartridge respectively; The second filter cartridge is rotatably arranged on the water tank, one end of the second filter cartridge is provided with a baffle, the baffle is attached to the outer wall of the first filter cartridge, the other end is provided with a second blow-off opening, the first cleaning assembly is arranged between the two mounting plates and penetrates the first filter cartridge; The second cleaning assembly is arranged in the inside of the water tank and is connected with the second filter cartridge. Thus, two-stage synchronous filtration of sewage can be realized, the filtering effect is improved, impurities blocking the screen holes can be cleaned in time, and the filtering efficiency is ensured.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment, and more particularly to a wastewater treatment filtration device. Background Technology

[0002] Currently, in wastewater treatment, drum filter devices are widely used in various wastewater treatment plants and the pre-treatment stage of industrial wastewater due to their advantages such as compact structure, high degree of automation, and strong continuous operation capability. Common drum filter devices typically use a motor to drive the drum to rotate, forcing wastewater through the gaps in the drum screen to complete the filtration.

[0003] However, in practical applications, existing drum filter devices generally suffer from the following technical shortcomings: Traditional drum filter devices are mostly single-stage filtration structures with only a single-pore screen. While this structure can intercept larger suspended particles in wastewater, it is difficult to effectively remove smaller impurities (such as silt, clay, and other mineral powders). Therefore, when faced with complex wastewater, the filtered water often still contains a large number of fine impurities, resulting in poor filtration efficiency. When wastewater treatment processes require higher purification precision, it is usually necessary to transfer the wastewater through pipelines or pumps to another independent secondary drum filter device for further treatment. The transfer of wastewater between multiple independent devices not only prolongs the treatment process and time but also increases the energy consumption of intermediate booster pumps and reduces overall filtration efficiency. Summary of the Invention

[0004] This application aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, one objective of this application is to provide a wastewater treatment filtration device that can achieve two-stage synchronous filtration of wastewater, improve the filtration effect, and also clean impurities clogging the screen holes in real time, thus ensuring filtration efficiency.

[0006] To achieve the above objectives, a first aspect of this application provides a wastewater treatment filtration device, comprising a first filter cylinder and a second filter cylinder that rotatably penetrate a water tank, a first cleaning component disposed inside the first filter cylinder, and a second cleaning component disposed above the second filter cylinder, wherein the second filter cylinder is sleeved on the outside of the first filter cylinder; a first support base and a second support base are respectively provided at both ends of the first filter cylinder near the inlet and a first discharge port, and a spiral blade is fixedly connected to the outer wall of the first filter cylinder; a driving mechanism is provided on the first support base, and the driving mechanism is respectively connected to the first filter cylinder and the second filter cylinder; the second filter cylinder is rotatably disposed on the water tank, and a baffle is provided at one end of the second filter cylinder, the baffle being in contact with the outer wall of the first filter cylinder, and a second discharge port is provided at the other end of the second filter cylinder; mounting plates are respectively provided on the first support base and the second support base, and the first cleaning component is disposed between the two mounting plates and penetrates the first filter cylinder; the second cleaning component is disposed inside the water tank and connected to the second filter cylinder.

[0007] In addition, the wastewater treatment filtration device proposed in this application may also have the following additional technical features: In one embodiment of this application, the first cleaning assembly includes a support shaft, a plurality of cleaning brushes, and a plurality of first nozzles, wherein the two ends of the support shaft are rotatably connected to the mounting plate, and the support shaft is a hollow structure; the plurality of cleaning brushes are arranged in a ring array on the support shaft and are in contact with the inner wall of the first filter cartridge; the plurality of first nozzles are evenly distributed between two adjacent cleaning brushes and communicate with the cavity of the support shaft.

[0008] In one embodiment of this application, the second cleaning assembly includes two rotating rings, two rollers, a connecting plate, and two first springs. The two rotating rings are disposed near both ends of the second filter cartridge, and each rotating ring has a plurality of protrusions arranged in a circular array on its arc-shaped surface. Support plates are respectively provided on the opposite inner walls of the water tank. The two first springs are respectively disposed on the lower surface of the corresponding support plates and connected to the connecting plate. A plurality of vibrating balls are respectively provided on the lower surface of the connecting plate. The two rollers are rolled on the corresponding protrusions or rotating rings, and the rollers are connected to the connecting plate.

[0009] In one embodiment of this application, the protrusion has an inclined surface, and the roller rolls along the inclined surface to the top of the protrusion.

[0010] In one embodiment of this application, the first filter cartridge includes an inlet section, a filter section, and a drain section that are interconnected. The inlet section is rotatably connected to the second support base. The filter section is located inside the second filter cartridge, and a plurality of first screen holes are evenly distributed on its arc-shaped wall. The drain section is rotatably connected to the first support base, and a plurality of guide plates are provided on the inner wall of the drain section.

[0011] In one embodiment of this application, the second filter cartridge has a second sieve hole evenly distributed on it, and the diameter of the second sieve hole is smaller than that of the first sieve hole.

[0012] In one embodiment of this application, the driving mechanism includes a driving gear and a transmission gear meshing with each other, and two gear rings, wherein the driving gear is rotatably mounted on the first support seat via a driving shaft; the transmission gear is rotatably mounted on the water tank via a transmission shaft; the two gear rings are respectively mounted on the first filter cartridge and the second filter cartridge, and are meshed with the driving gear and the transmission gear respectively.

[0013] Compared with the prior art, this application has at least the following beneficial effects: by rotating the first and second filter cartridges in opposite directions, two-stage filtration of sewage can be achieved, improving the filtration effect and efficiency. During the rotation of the first filter cartridge, the spiral blades are driven to rotate, conveying the second impurities to the second discharge port. The first cleaning component cleans the first filter cartridge by combining brushing and rinsing, while the second cleaning component cleans the second filter cartridge by vibration and rinsing, effectively ensuring the filtration performance of the first and second filter cartridges.

[0014] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a wastewater treatment filtration device according to an embodiment of this application; Figure 2 This is a cross-sectional view of a wastewater treatment filtration device according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the second cleaning component in this application; Figure 4 This is a schematic diagram of the structure of the first cleaning component in this application; Figure 5 This is a schematic diagram of the structure of the first filter cartridge in this application; Figure 6 This is a schematic diagram of the structure of the second filter cartridge in this application.

[0016] As shown in the figure: 1. First filter cartridge; 2. Second filter cartridge; 3. Water tank; 4. First cleaning assembly; 5. Second cleaning assembly; 6. Spiral blade; 7. Drive mechanism; 8. Extrusion and discharge assembly; 9. Guide plate; 10. Inlet; 11. First discharge port; 12. First support base; 13. Second support base; 14. Mounting plate; 15. Inlet section; 16. Filter section; 17. Discharge section; 18. Baffle; 21. Second discharge port; 41. Support shaft; 42. Cleaning brush plate; 43. First nozzle; 51. Rotating ring; 52. Protrusion; 53. Roller; 54. Connecting plate; 55. First spring; 56. Support plate; 57. Vibrating ball; 58. Second nozzle; 71. Drive gear; 72. Transmission gear; 73. Gear ring; 81. Second spring; 82. Extrusion plate. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0018] The wastewater treatment filtration device according to an embodiment of this application will now be described with reference to the accompanying drawings.

[0019] The wastewater treatment filtration device provided in this application embodiment can be applied to wastewater treatment plants. By using two opposing rotating first filter cartridges 1 and second filter cartridges 2, two-stage synchronous filtration of wastewater can be achieved, thereby improving the filtration effect of wastewater. At the same time, the first cleaning component and the second cleaning component can clean the screen holes on the first filter cartridge 1 and the second filter cartridge 2 in a timely manner, ensuring the filtration efficiency.

[0020] like Figures 1 to 6 As shown, the wastewater treatment filtration device of this application embodiment includes a first filter cylinder 1 and a second filter cylinder 2 that rotate through the water tank 3, as well as a first cleaning component 4 disposed inside the first filter cylinder 1 and a second cleaning component 5 disposed above the second filter cylinder 2.

[0021] The first filter cartridge 1 and the second filter cartridge 2 are both conical structures, and the second filter cartridge 2 is sleeved on the outside of the first filter cartridge 1.

[0022] It should be noted that a drain pipe is connected to the water tank 3 to discharge the filtered wastewater.

[0023] It is understandable that the second filter cartridge 2 has a second screen hole evenly distributed on it. The pore size of the second screen hole is smaller than that of the first screen hole, so as to achieve two-stage filtration of sewage. The pore size of the second screen hole is smaller than the particle size of fine impurities (such as organic debris, silt, clay, etc.), so as to effectively intercept them.

[0024] Furthermore, the length of the first filter cartridge 1 is greater than that of the second filter cartridge 2, and the rotation directions of the first filter cartridge 1 and the second filter cartridge 2 are opposite, resulting in a higher relative speed between them. This increases the flow rate of wastewater through the screen holes, which helps to improve filtration efficiency. In addition, the reverse rotation generates a strong fluid shearing force in the annular gap between the first filter cartridge 1 and the second filter cartridge 2. This shearing force can effectively peel off impurities attached to the screen surface, playing a certain self-cleaning role.

[0025] Wastewater is pumped into the first filter cartridge 1 for primary filtration, then enters the second filter cartridge 2 for secondary filtration, and finally discharged into the water tank 3. This two-stage filtration reduces the impurity content in the wastewater and improves the filtration efficiency.

[0026] The first filter cartridge 1 has a first support seat 12 and a second support seat 13 at its two ends near the inlet 10 and the first drain outlet 11, respectively, and the outer wall of the first filter cartridge 1 is fixedly connected with a spiral blade 6.

[0027] It should be noted that the spiral blades 6 are wrapped around the outer wall of the first filter cartridge 1 and rotate with the first filter cartridge 1. The spiral blades 6 and the second filter cartridge 2 form a conveying channel, which can convey the second impurities inside the second filter cartridge 2 to the second drain outlet 21 for discharge. Moreover, the rotation speed of the spiral blades 6 is greater than that of the second filter cartridge 2. This "differential rotation" can not only make efficient conveying by the spiral blades 6, but also facilitate the self-cleaning of the second filter cartridge 2.

[0028] Furthermore, both the first support base 12 and the second support base 13 are L-shaped structures to support the first filter cartridge 1 and ensure that the first filter cartridge 1 can remain suspended.

[0029] In the embodiments of this application, the diameter of inlet 10 is smaller than the diameter of the first discharge outlet 11. Wastewater enters the interior of the first filter cartridge 1 through inlet 10. Because the first filter cartridge 1 has a conical structure and rotates continuously, first impurities larger than the first screen aperture are trapped inside the first filter cartridge 1 and move along the inclined inner wall of the first filter cartridge 1 towards the first discharge outlet 11, eventually being discharged from the first discharge outlet 11. Second impurities smaller than the first screen aperture are trapped inside the second filter cartridge 2 and pushed to the second discharge outlet 21 by the continuous pushing of the spiral blades 6. Thus, wastewater can be filtered in two stages simultaneously, improving the filtration effect and efficiency.

[0030] The first support base 12 is provided with a drive mechanism 7, which is connected to the first filter cartridge 1 and the second filter cartridge 2 respectively.

[0031] In the embodiments of this application, the driving mechanism 7 is used to drive the first filter cartridge 1 and the second filter cartridge 2 to rotate synchronously in opposite directions, and the rotation speed of the first filter cartridge 1 is greater than that of the second filter cartridge 2. The rotating first filter cartridge 1 and the second filter cartridge 2 can simultaneously perform different levels of filtration on sewage.

[0032] The second filter cartridge 2 is rotatably mounted on the water tank 3. One end of the second filter cartridge 2 is provided with a baffle 18, which is attached to the outer wall of the first filter cartridge 1. The other end of the second filter cartridge 2 is provided with a second drain outlet 21.

[0033] In the embodiments of this application, the second filter cartridge 2 is mounted on the water tank 3 via bearings. The end with the larger opening diameter is blocked by a baffle 18, and the smaller end is provided with a second drain port 21. In addition, a squeezing and draining assembly 8 is provided at the second drain port 21 to squeeze the second impurities in the second filter cartridge 2 to remove some water, facilitating subsequent recycling and reuse.

[0034] Further, see Figure 3 The compression discharge assembly 8 includes multiple second springs 81 and compression plates 82. The two ends of the second springs 81 are connected to the second support base 13 and the compression plates 82, respectively. The compression plates 82 cover the second discharge port 21. When the second filter cartridge 2 rotates, the spiral blades 6 rotate accordingly, continuously conveying the second impurities inside the second filter cartridge 2 to the second discharge port 21. The impurities accumulate at the second discharge port 21 and are continuously compressed, thereby compressing and discharging some water. As the impurities accumulate, their pressure on the compression plates 82 gradually increases until it exceeds the elastic force of the second springs 81. The second springs 81 are then compressed, the compression plates 82 separate from the second discharge port 21, and the second impurities are discharged.

[0035] Mounting plates 14 are respectively provided on the first support base 12 and the second support base 13. The first cleaning component 4 is disposed between the two mounting plates 14 and passes through the first filter cartridge 1. The second cleaning component 5 is disposed inside the water tank 3 and is connected to the second filter cartridge 2.

[0036] In the embodiments of this application, the first cleaning component 4 uses high-pressure water rinsing and brushing to clean the impurities clogging the first screen holes, while the second cleaning component 5 uses vibration to clean the impurities clogging the second screen holes, thereby ensuring the effect and efficiency of sewage filtration.

[0037] To further clarify the above embodiments, in one embodiment of this application, such as Figure 4As shown, the first cleaning assembly 4 includes a support shaft 41, multiple cleaning brushes 42, and multiple first nozzles 43. The two ends of the support shaft 41 are rotatably connected to the mounting plate 14, and the support shaft 41 is a hollow structure. The multiple cleaning brushes 42 are arranged in a ring array on the support shaft 41 and are in contact with the inner wall of the first filter cartridge 1. The multiple first nozzles 43 are evenly distributed between two adjacent cleaning brushes 42 and are in communication with the cavity of the support shaft 41.

[0038] It should be noted that one end of the support shaft 41 is connected to the motor, which can drive it to rotate. The other end of the support shaft 41 passes through the mounting plate 14 and is connected to an external water pump (not shown in the figure) through a rotary joint. The water pump can deliver water into the support shaft 41 and spray it out through multiple first nozzles 43. During the rotation of the cleaning brush plate 42, the inner wall of the first filter cartridge 1 can be brushed and washed. Combined with the high-pressure water rinsing of the first nozzles 43, the impurities in the first screen holes can be effectively removed, ensuring the filtration effect of the first filter cartridge 1.

[0039] Furthermore, such as Figure 3 As shown, the second cleaning assembly 5 includes two rotating rings 51, two rollers 53, a connecting plate 54, and two first springs 55. The two rotating rings 51 are located near the two ends of the second filter cartridge 2, and each rotating ring 51 has a plurality of protrusions 52 arranged in an arc-shaped array on its arc surface. Support plates 56 are respectively provided on the opposite inner walls of the water tank 3. The two first springs 55 are respectively located on the lower surface of the corresponding support plates 56 and are connected to the connecting plate 54. The lower surface of the connecting plate 54 is respectively provided with a plurality of vibrating balls 57, which are elastic balls. The two rollers 53 are rolled on the corresponding protrusions 52 or rotating rings 51, and the rollers 53 are connected to the connecting plate 54.

[0040] In the embodiments of this application, the rotating ring 51 is fixed to the outer wall of the second filter cylinder 2, and the protrusions 52 on the two rotating rings 51 are arranged one-to-one. The rotating rings 51 and the protrusions 52 rotate with the second filter cylinder 2, and the connecting plate 54 is arranged parallel to the axis of the second filter cylinder 2. The roller 53 rolls on the arc surface of the rotating ring 51 and the protrusions 52.

[0041] Furthermore, such as Figure 3 As shown, the protrusion 52 has an inclined surface, and the roller 53 rolls along the inclined surface to the top of the protrusion 52.

[0042] When the roller 53 rolls on top of the protrusion 52, the first spring 55 is compressed. Then the roller 53 rolls on the outer wall of the rotating ring 51. The compressed first spring 55 releases its elastic potential energy, pushing the connecting plate 54 to move towards the second filter cylinder 2, and generating vibration on the second filter cylinder 2 through the vibrating ball 57, thereby shaking out the impurities clogging the second screen holes.

[0043] To further improve the cleaning effect of the second cleaning component 5, please refer to... Figure 2 The connecting plate 54 has a hollow tube inside, and multiple second nozzles 58 are arranged at intervals on the side facing the second filter cartridge 2. These nozzles are connected to the hollow tube. Water is delivered into the hollow tube by a water pump (not shown in the figure) and finally sprayed out from the second nozzles 58. The water flow assists the vibration, which can significantly enhance the cleaning effect on the second filter cartridge 2.

[0044] In one embodiment of this application, such as Figure 5 As shown, the first filter cartridge 1 includes an inlet section 15, a filter section 16 and a drain section 17 that are interconnected. The inlet section 15 is rotatably connected to the second support base 13. The filter section 16 is located inside the second filter cartridge 2 and has a plurality of first screen holes evenly distributed on its arc-shaped wall. The drain section 17 is rotatably connected to the first support base 12 and has a plurality of guide plates 9 on its inner wall.

[0045] It should be noted that the inlet section 15 and the outlet section 17 are respectively located at both ends of the filter section 16, and the diameter of the inlet section 15 is smaller than the diameter of the outlet section 17. The filter section 16 is placed inside the water tank 3. After the sewage is pumped to the inlet section 15, the first impurities are filtered out by the first filter cartridge 1 and the filtration action. Then, it flows along the inclined inner wall of the filter section 16 to the outlet section 17 and finally discharges the first impurities. The inner wall of the outlet section 17 is provided with an arc-shaped guide plate 9 to guide the first impurities out.

[0046] In one embodiment of this application, such as Figure 1 As shown, the drive mechanism 7 includes a drive gear 71 and a transmission gear 72 that mesh with each other, as well as two gear rings 73. The drive gear 71 is rotatably mounted on the first support base 12 via a drive shaft, and the transmission gear 72 is rotatably mounted on the water tank 3 via a transmission shaft. The two gear rings 73 are respectively mounted on the first filter cylinder 1 and the second filter cylinder 2, and are meshed with the drive gear 71 and the transmission gear 72 respectively.

[0047] It should be noted that the two toothed rings 73 have different diameters; the toothed ring 73 on the second filter cartridge 2 has a larger diameter, while the toothed ring 73 on the first filter cartridge 1 has a smaller diameter. The drive gear 71 is connected to an external motor, which drives its rotation. The drive gear 71 then rotates the toothed ring 73 on the first filter cartridge 1. With the cooperation of the transmission gear 72, the gear ring 73 on the second filter cylinder 2 is driven to rotate, and the rotation directions of the first filter cylinder 1 and the second filter cylinder 2 are opposite.

[0048] Furthermore, the drive gear 71 and the transmission gear 72 have the same diameter, which ensures that the rotation speed of the first filter cartridge 1 is higher than that of the second filter cartridge 2. Therefore, the spiral blade 6 is in a rotating state relative to the second filter cartridge 2, which facilitates the smooth discharge of the second impurity.

[0049] Specifically, wastewater is pumped into the first filter cartridge 1 through inlet 10 by a liquid pump. After the drive mechanism 7 is activated, the first filter cartridge 1 and the second filter cartridge 2 rotate in opposite directions. After the wastewater undergoes primary filtration in the first filter cartridge 1, the first impurities larger than the first screen aperture are trapped inside the first filter cartridge 1 and move with the rotating first filter cartridge 1 to the first discharge port 11 for discharge. The second impurities smaller than the first screen aperture, along with water, enter the second filter cartridge 2. After secondary filtration in the second filter cartridge 2, the second impurities are trapped inside the second filter cartridge 2. Under the conveying action of the spiral blades 6, the second impurities are transported to the second discharge port 21 and continuously accumulate there, gradually increasing the pressure on the extrusion plate 82 until it exceeds the elastic force of the second spring 81. At this point, the second spring 81 is compressed and deformed, the extrusion plate 82 separates from the second discharge port 21, and the second impurities are discharged. This achieves two-stage filtration of the wastewater, improving the filtration effect and efficiency.

[0050] At the same time, when the motor connected to the support shaft 41 is started, it drives the cleaning brush plate 42 and the first nozzle 43 to rotate. The rotating cleaning brush plate 42 brushes the inner wall of the first filter cylinder 1, while the first nozzle 43 rinses the inner wall of the first filter cylinder 1, effectively removing impurities in the first screen hole.

[0051] Furthermore, during the rotation of the second filter cartridge 2, the rotating ring 51 and the protrusion 52 rotate synchronously, and the roller 53 rolls on its surface, causing the first spring 55 to continuously extend and retract, thereby driving the connecting plate 54 to move up and down reciprocally, ultimately causing the vibrating ball 57 to continuously strike the second filter cartridge 2, which, together with the rinsing of the second nozzle 58, ensures that the second screen hole remains unobstructed and prevents blockage.

[0052] In summary, the wastewater treatment filtration device of this application embodiment can achieve two-stage synchronous filtration of wastewater, improve the filtration effect, and can also clean impurities clogging the screen holes in real time, ensuring filtration efficiency.

[0053] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A wastewater treatment filtration device, characterized in that, The system includes a first filter cartridge and a second filter cartridge that rotate through a water tank, a first cleaning assembly disposed inside the first filter cartridge, and a second cleaning assembly disposed above the second filter cartridge. The second filter cartridge is sleeved on the outside of the first filter cartridge; The first filter cartridge has a first support base and a second support base at its two ends near the inlet and the first sewage outlet, respectively, and the outer wall of the first filter cartridge is fixedly connected with a spiral blade. The first support base is provided with a driving mechanism, which is connected to the first filter cartridge and the second filter cartridge respectively; The second filter cartridge is rotatably mounted on the water tank, with a baffle at one end that fits against the outer wall of the first filter cartridge, and a second drain outlet at the other end of the second filter cartridge. The first support base and the second support base are respectively provided with mounting plates, and the first cleaning component is disposed between the two mounting plates and passes through the first filter cartridge; The second cleaning component is disposed inside the water tank and connected to the second filter cartridge.

2. The wastewater treatment filtration device according to claim 1, characterized in that, The first cleaning assembly includes a support shaft, multiple cleaning brushes, and multiple first nozzles, wherein, The support shaft is rotatably connected to the mounting plate, and the support shaft has a hollow structure; A plurality of the cleaning brush plates are arranged in a ring array on the support shaft and are in contact with the inner wall of the first filter cartridge; Multiple first nozzles are evenly distributed between two adjacent cleaning brush plates and are in communication with the cavity of the support shaft.

3. The wastewater treatment filtration device according to claim 1, characterized in that, The second cleaning assembly includes two rotating rings, two rollers, a connecting plate, and two first springs, wherein, The two rotating rings are positioned near the two ends of the second filter cartridge, and each rotating ring has a ring array of multiple protrusions on its arc-shaped surface; The water tank is provided with support plates on opposite inner walls, and the two first springs are respectively disposed on the lower surface of the corresponding support plates and connected to the connecting plate. The lower surface of the connecting plate is provided with a plurality of vibrating balls; The two rollers are rolled on the corresponding protrusions or rotating rings, and the rollers are connected to the connecting plate.

4. The wastewater treatment filtration device according to claim 3, characterized in that, The protrusion has an inclined surface, and the roller rolls along the inclined surface to the top of the protrusion.

5. The wastewater treatment filtration device according to claim 1, characterized in that, The first filter cartridge includes an inlet section, a filtration section, and a discharge section that are interconnected, wherein, The inlet section is rotatably connected to the second support base; The filtration section is located inside the second filter cartridge, and a plurality of first sieve holes are evenly distributed on its arc-shaped wall; The sewage discharge section is rotatably connected to the first support base, and the inner wall of the sewage discharge section is provided with multiple guide plates.

6. The wastewater treatment filtration device according to claim 5, characterized in that, The second filter cartridge has a second sieve hole evenly distributed on it, and the diameter of the second sieve hole is smaller than that of the first sieve hole.

7. The wastewater treatment filtration device according to claim 1, characterized in that, The drive mechanism includes a drive gear and a transmission gear that mesh with each other, as well as two gear rings, wherein, The drive gear is rotatably mounted on the first support base via a drive shaft; The transmission gear is rotatably mounted on the water tank via a transmission shaft; The two toothed rings are respectively disposed on the first filter cartridge and the second filter cartridge, and are respectively meshed with the drive gear and the transmission gear.

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