Sewage treatment device

Abstract

The invention is applied to the technical field of sewage treatment, and discloses a sewage treatment device which comprises cylinders, connecting flanges are fixedly arranged at the upper ends of the cylinders, the two cylinders are fixedly connected through bolts, an electromagnetic valve is fixedly mounted at the lower end of the cylinder on one side, a water outlet is fixedly connected to the lower end of the electromagnetic valve, and a water outlet is fixedly connected to the lower end of the electromagnetic valve. A treatment mechanism is arranged in the cylinder body, and filtration and impurity removal can be carried out at the same time through a rotary switching filtration mode. According to the sewage treatment device, a rotary switching filtering mode is adopted, filtering and impurity removal are synchronously carried out, the lower end of an output shaft of a center motor is fixedly connected with a rotating disc, when the center motor runs, the rotating disc is driven to continuously rotate, a filtering plate arranged on the outer surface of the rotating disc filters sewage in the rotating process, and meanwhile, the rotating disc is driven to rotate; impurities intercepted by the filter plate can be timely transferred to a specific position to be cleaned along with the rotation of the turntable, and a traditional device does not need to interrupt the sewage treatment flow to clean the filter screen.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device. Background Art

[0002] In today's society, with the acceleration of industrialization and urbanization, the amount of sewage discharge has increased dramatically. Sewage treatment has become a key task in the field of environmental protection. Traditional sewage treatment devices have many shortcomings, which seriously restrict the efficiency and quality of sewage treatment. On the one hand, common sewage treatment devices mostly use a single filtering method, and it is difficult to perform filtering and impurity removal processes at the same time. During the filtering process, impurities in sewage are easy to clog the filter, resulting in a slow filtering speed. The filter needs to be cleaned frequently, which not only consumes a lot of manpower and material resources, but also interrupts the sewage treatment process, greatly reducing the overall treatment efficiency. For example, some devices using fixed filters often fail to work normally after a short operation time when treating sewage containing a large number of suspended particles due to filter clogging; On the other hand, in terms of flocculation and sedimentation treatment, most devices are unable to automatically adjust the injection volume of chemical agents according to the sewage flow rate. If the injection volume is insufficient, the insoluble substances in the sewage cannot be fully precipitated and the treatment effect is poor. If the injection volume is too much, it will not only cause a waste of chemical agents, but may also cause secondary pollution. For example, some devices that rely on manual timed and quantitative addition of flocculants are unable to adapt to real-time changes in sewage flow and it is difficult to ensure effective precipitation treatment of insoluble substances in sewage.

[0003] Therefore, developing a sewage treatment device that can realize rotary switching filtration, perform filtration and impurity removal simultaneously, and automatically inject chemical agents according to sewage flow is of great significance for improving sewage treatment efficiency and quality and reducing treatment costs. Summary of the invention

[0004] The object of the present invention is to provide a sewage treatment device to solve the problems proposed in the above background technology that filtration and impurity removal cannot be carried out simultaneously resulting in low efficiency, and the amount of chemical injection cannot be automatically adjusted according to the sewage flow, affecting the treatment effect and causing waste of resources and potential secondary pollution.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sewage treatment device, comprising a cylinder, a connecting flange is fixedly arranged at the upper end of the cylinder, and two cylinders are fixedly connected by bolts, a solenoid valve is fixedly installed at the lower end of one side of the cylinder, and a water outlet is fixedly connected to the lower end of the solenoid valve, a treatment mechanism is arranged inside the cylinder, and filtering and impurity removal can be performed simultaneously through a rotating switching filtering mode, which greatly improves the overall sewage treatment efficiency; The processing mechanism includes a central seat, a guide groove is provided inside the upper end of the central seat, and a water storage tank is provided inside the lower end of the central seat, a central motor is fixedly installed inside the lower end of the central seat, and the lower end of the output shaft of the central motor passes through the lower surface of the central seat, and a turntable is fixedly connected to the lower end of the output shaft of the central motor, and a filter plate is embedded on the outer surface of the turntable; A center column, a clearance groove is provided on one side of the upper end of the center column, and a piston groove is provided on the other side of the upper end of the center column, a piston plate is provided inside the piston groove, and a contact rod is fixedly provided on the lower surface of the piston plate, and the lower end of the contact rod passes through the outer surface of the upper end of the center column, a waste discharge port is provided on the side surface of the cylinder body opposite to the piston plate, a water injection groove is provided inside the center column, and a rotating impeller is installed inside the side surface of the middle section of the center column, both ends of the impeller shaft pass through the outer surface of the center column, and both ends of the impeller shaft are fixedly provided with fixing plates, and a reset spring is connected between the contact rod and the outer surface of the upper end of the center column; The treatment mechanism also includes a flocculation and stirring mechanism, which ensures effective precipitation treatment of intolerant substances in the sewage by automatically injecting chemical agents along with the sewage flow; The flocculation and stirring mechanism includes a stirring barrel, which is rotatably installed inside the lower end of the cylinder, and a spoiler is fixedly provided on the inner surface of the stirring barrel, and a spoiler block is fixedly provided on the outer surface of the upper end of the spoiler, a baffle is fixedly provided on the inner surface of the stirring barrel above the spoiler, one end of the rotating shaft of the impeller is fixedly connected with a gear, and gear blocks are evenly provided on the upper surface of the stirring barrel, a liquid storage barrel is fixedly provided on the outer surface of the cylinder on one side, and a dispensing box is fixedly connected to the lower end of the liquid storage barrel, a leakage port is provided at the lower end of the dispensing box, and a rotating dispensing disk is installed inside the dispensing box, and a liquid storage tank is provided on the outer surface of the dispensing disk.

[0006] Preferably, the lower end of the guide groove is connected to the water storage groove, and the water storage groove is located directly above the give way groove, the lower surface of the center seat is inclined, and the lower surface of the center seat is in contact with the upper surface of the turntable, and the lower surface of the turntable is in contact with the upper end surface of the center column.

[0007] The above technical solution can ensure that the sewage flows along a specific path in the device. The sewage flows into the water storage tank through the diversion trough and then falls down into the give way trough. The inclined lower surface of the center seat, the fitted turntable and the center column can guide the sewage to flow in a directional manner, ensuring that the filtered sewage smoothly enters the subsequent treatment process, and also provides convenient conditions for the cleaning and treatment of impurities, ensuring the orderly progress of the sewage treatment process.

[0008] Preferably, the piston plate and the piston groove are connected by sliding friction, the lower end of the contact rod is cylindrical in design, the upper end of the water injection groove passes through the lower end of the give way groove, and the lower end of the water injection groove passes through the lower end surface of the center column, and a gap is left between the lower end surface of the center column and the inner bottom surface of the cylinder.

[0009] By adopting the above technical solution, the sliding friction connection between the piston plate and the piston groove allows the piston plate to slide stably in the piston groove. The special structural design of the water injection groove allows the sewage to flow smoothly and drive the impeller to rotate. At the same time, it also provides power for the piston plate to utilize internal pressure changes to dredge through the holes of the filter plate. The gap between the lower end surface of the center column and the bottom surface of the cylinder body facilitates the discharge of sewage and ensures the normal operation of the device.

[0010] Preferably, the outer surface of the impeller is in contact with the inner surface of the central column, and the blades on one side of the impeller are located inside the water injection groove, and the fixing plate is of arc-shaped design.

[0011] By adopting the above technical solution, the fitting design of the impeller and the center column can effectively prevent sewage leakage and ensure that the sewage drives the impeller to rotate stably when flowing through it. The arc-shaped fixed plate can more effectively periodically hit the contact rod during the rotation of the impeller, thereby making the piston plate slide up and down stably, clearing the blocked holes of the filter plate and ensuring the filtering effect.

[0012] Preferably, the outer surface of the mixing barrel is in contact with the inner surface of the cylinder, the spoiler is evenly arranged on the inner surface of the mixing barrel, and the spoiler is L-shaped, the lower end of the spoiler is arc-shaped, the spoiler block is staggered on the upper outer surface of the spoiler, and a gap is left between the upper end surface of the spoiler and the lower end surface of the baffle.

[0013] By adopting the above technical scheme, the fit between the mixing barrel and the cylinder can ensure that sewage will not leak during the mixing process. The L-shaped spoiler with an arc-shaped lower end, combined with the staggered spoiler blocks, can greatly enhance the disturbance effect on the sewage when the mixing barrel rotates, so that the chemicals and sewage can be more fully mixed. The gap between the spoiler and the baffle can make the sewage form a more complex flow path in the mixing barrel, further promote the uniform mixing of chemicals and sewage, and improve the quality of sewage treatment.

[0014] Preferably, the gear is meshedly connected to the mixing barrel via a tooth block on the upper surface of the mixing barrel, and the gear and the material distribution plate are respectively located on both sides of the impeller.

[0015] With the above technical solution, when the impeller rotates due to the change in the sewage flow rate, the stirring barrel can be driven to rotate through the engagement of the gear and the tooth blocks on the upper surface of the stirring barrel, realizing the stirring and mixing of the sewage. At the same time, the gear and the dosing plate are respectively located on both sides of the impeller, so that when the impeller rotates, it can drive the dosing plate to rotate through transmission, thereby accurately controlling the injection amount of the chemical agent in the liquid storage barrel, ensuring that the injection amount of the chemical agent matches the sewage flow rate, and improving the sewage treatment effect.

[0016] Preferably, the lower end of the liquid storage barrel is communicated with the dosing box, and the inner surface of the dosing box is attached to the outer surface of the dosing plate.

[0017] With the above technical solution, the connection between the liquid storage barrel and the dosing box enables the chemical agent in the liquid storage barrel to smoothly enter the dosing box. The attachment of the dosing box and the dosing plate can ensure that during the rotation of the dosing plate, the chemical agent is quantitatively discharged through the liquid storage grooves on the outer surface of the dosing plate, avoiding the leakage of the chemical agent, accurately controlling the injection amount of the chemical agent, and providing a guarantee for the effective precipitation treatment of the insoluble substances in the sewage.

[0018] Preferably, the rotating shaft of the dosing plate penetrates through the outer surface of the dosing box, and the rotating shaft of the dosing plate is fixedly connected to one side rotating shaft of the impeller.

[0019] With the above technical solution, the structural design of the rotating shaft of the dosing plate enables it to rotate stably. The fixed connection with one side rotating shaft of the impeller allows the impeller to directly drive the dosing plate to rotate synchronously when the impeller rotates, accurately adjusting the rotation frequency of the dosing plate according to the change in the sewage flow rate, thereby realizing the accurate matching of the injection amount of the chemical agent and the sewage flow rate, ensuring the full precipitation of the insoluble substances in the sewage, and improving the sewage treatment quality.

[0020] Compared with the prior art, the beneficial effects of the present invention are: This sewage treatment device: 1. Adopts a rotating and switching filtration method to realize the simultaneous development of filtration and impurity removal. The lower end of the output shaft of the central motor is fixedly connected to the turntable. When the central motor operates, it drives the turntable to continuously rotate. The filter plates provided on its outer surface filter the sewage during rotation. At the same time, the impurities intercepted by the filter plates can be timely transferred to a specific position for cleaning along with the rotation of the turntable, without the need to interrupt the sewage treatment process to clean the filter screen like traditional devices. This method effectively avoids the problem of reduced treatment efficiency caused by filter screen blockage, and greatly improves the sewage treatment volume per unit time compared with the devices with traditional single filtration methods; Furthermore, by the method of driving the impeller to rotate when sewage is injected, the impeller can drive the fixed plate to strike periodically, so that the piston plate can slide up and down periodically, and use the change in the internal pressure of the piston plate to dredge the blocked holes of the filter plate, thereby avoiding the blockage of the filter plate caused by impurities; 2. When sewage flows through the water injection tank, it drives the impeller to rotate. One end of the impeller shaft is fixedly connected to a gear. The gear is meshed with the mixing barrel through the tooth block on the upper surface of the mixing barrel, and the shaft of the distribution plate is fixedly connected to one side of the impeller shaft. In this way, when the impeller rotates with the change of sewage flow, the distribution plate is driven to rotate through the gear transmission, thereby accurately controlling the injection amount of chemical agents in the liquid storage barrel. When the sewage flow is large, the impeller speed is fast, the distribution plate rotation frequency is high, and the injected chemical agents increase accordingly, otherwise it decreases. This precise adjustment ensures that the insoluble substances in the sewage are fully precipitated, greatly improves the quality of sewage treatment, and avoids the problem of poor treatment effect due to improper injection of chemical agents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the connection between the cylinder, the solenoid valve and the water outlet of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the overall cutaway surface of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the piston groove and the piston plate of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the connection section of the central motor, the rotating disk and the filter plate of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the cylinder body and the liquid storage barrel of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the mixing barrel and the gear connection of the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the connection section of the material distribution box, the material distribution plate and the liquid storage tank of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the mixing barrel, the spoiler plate and the spoiler block connected in the present invention.

[0022] In the figure: 1. Cylinder; 2. Connecting flange; 3. Solenoid valve; 4. Water outlet; 5. Center seat; 6. Guide groove; 7. Water storage tank; 8. Center motor; 9. Turntable; 10. Filter plate; 11. Center column; 12. Give way groove; 13. Piston groove; 14. Piston plate; 15. Contact rod; 16. Waste outlet; 17. Water injection groove; 18. Impeller; 19. Fixed plate; 20. Return spring; 21. Mixing barrel; 22. Spoiler; 23. Spoiler block; 24. Baffle; 25. Gear; 26. Liquid storage barrel; 27. Dispensing box; 28. Leakage port; 29. ​​Dispensing plate; 30. Liquid storage tank. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figures 1-9 , the present invention provides a technical solution: a sewage treatment device. Example

[0025] The embodiment discloses: a cylinder 1, a connecting flange 2 is fixedly arranged at the upper end of the cylinder 1, and two cylinders 1 are fixedly connected by bolts, a solenoid valve 3 is fixedly installed at the lower end of one side of the cylinder 1, and a water outlet 4 is fixedly connected to the lower end of the solenoid valve 3, and a treatment mechanism is arranged inside the cylinder 1, and filtering and impurity removal can be performed simultaneously through a rotating switching filtering method, which greatly improves the overall sewage treatment efficiency; The processing mechanism includes a central seat 5, a guide groove 6 is provided inside the upper end of the central seat 5, and a water storage tank 7 is provided inside the lower end of the central seat 5, a central motor 8 is fixedly installed inside the lower end of the central seat 5, and the lower end of the output shaft of the central motor 8 passes through the lower surface of the central seat 5, and a turntable 9 is fixedly connected to the lower end of the output shaft of the central motor 8, and a filter plate 10 is embedded on the outer surface of the turntable 9; The processing mechanism also includes: a central column 11, a clearance groove 12 is provided on one side of the upper end of the central column 11, and a piston groove 13 is provided on the other side of the upper end of the central column 11, a piston plate 14 is provided inside the piston groove 13, and a contact rod 15 is fixedly provided on the lower surface of the piston plate 14, and the lower end of the contact rod 15 passes through the upper outer surface of the central column 11, and a waste discharge port 16 is provided on the side surface of the cylinder 1 opposite to the piston plate 14, a water injection groove 17 is provided inside the central column 11, and a rotating impeller 18 is installed inside the middle section side surface of the central column 11, both ends of the rotating shaft of the impeller 18 pass through the outer surface of the central column 11, and both ends of the rotating shaft of the impeller 18 are fixedly provided with a fixing plate 19, and a reset spring 20 is connected between the contact rod 15 and the upper outer surface of the central column 11; The lower end of the guide groove 6 is connected to the water storage groove 7, and the water storage groove 7 is located directly above the clearance groove 12. The lower surface of the center seat 5 is inclined, and the lower surface of the center seat 5 is in contact with the upper surface of the rotating disk 9, and the lower surface of the rotating disk 9 is in contact with the upper end surface of the center column 11. The piston plate 14 and the piston groove 13 are connected by sliding friction, the lower end of the contact rod 15 is cylindrical, the upper end of the water injection groove 17 penetrates the lower end of the clearance groove 12, and the lower end of the water injection groove 17 penetrates the lower end surface of the center column 11, and a gap is left between the lower end surface of the center column 11 and the inner bottom surface of the cylinder 1; The outer surface of the impeller 18 is in contact with the inner surface of the central column 11, and one blade of the impeller 18 is located inside the water injection groove 17, and the fixing plate 19 is designed in an arc shape; Start the central motor 8, and its output shaft drives the turntable 9 to rotate continuously. After the sewage enters the cylinder 1 through the connecting flange 2, it will contact the filter plate 10 on the outer surface of the turntable 9. During the rotation of the turntable 9, the filter plate 10 filters the sewage, and the filtered water enters the subsequent treatment process, while the intercepted impurities rotate with the turntable 9. Since filtering and impurity removal can be carried out at the same time, the problem of interrupting the treatment process to clean the filter due to filter clogging in the traditional single filtration method is avoided, thereby improving the sewage treatment efficiency.

[0026] When sewage is injected, it will flow through the water injection groove 17, driving the impeller 18 to rotate. The fixed plates 19 fixed at both ends of the impeller 18 shaft will periodically hit the contact rod 15 as the impeller 18 rotates. The contact rod 15 is connected to the piston plate 14. Under the impact of the fixed plate 19, the piston plate 14 slides up and down periodically in the piston groove 13. When the piston plate 14 slides, its internal pressure changes. This pressure change can clear the holes blocked in the filter plate 10, and the impurities brought out by the pressure are discharged through the waste outlet 16 to prevent the impurities from clogging the filter plate 10, thereby ensuring the continuous and stable filtering work. The reset spring 20 ensures that the piston plate 14 can be reset when the contact rod 15 is not subjected to external force.

[0027] The guide groove 6 of the center seat 5 is used to guide sewage, and its lower end is connected with the water storage tank 7. The sewage flows into the water storage tank 7 through the guide groove 6. The water storage tank 7 is located directly above the give-way groove 12. The sewage falls downward into the give-way groove 12 after being filtered by the filter plate 10. The lower surface of the center seat 5 is inclined and fits with the upper surface of the turntable 9. The lower surface of the turntable 9 fits with the upper end surface of the center column 11, thereby ensuring the directional backflow of the sewage. The treated sewage is discharged through the water outlet 4 through the periodic opening of the solenoid valve 3. Example

[0028] This embodiment is disclosed on the basis of the first embodiment: the treatment mechanism also includes a flocculation stirring mechanism, which ensures effective precipitation treatment of intolerant substances in the sewage by automatically injecting chemical agents along with the sewage flow; The flocculation stirring mechanism includes a stirring barrel 21, which is rotatably installed inside the lower end of the cylinder body 1. A spoiler 22 is fixedly arranged on the inner surface of the stirring barrel 21. A spoiler block 23 is fixedly arranged on the outer surface of the upper end of the spoiler 22. A baffle 24 is fixedly arranged on the inner surface of the stirring barrel 21 above the spoiler 22. One end of the rotating shaft of the impeller 18 is fixedly connected to a gear 25. Tooth blocks are evenly arranged on the upper surface of the stirring barrel 21. A liquid storage barrel 26 is fixedly arranged on the outer surface of one side of the cylinder body 1. The lower end of the liquid storage barrel 26 is fixedly connected to a material distribution box 27. A leakage opening 28 is opened at the lower end of the material distribution box 27. A rotating material distribution disk 29 is installed inside the material distribution box 27. Liquid storage grooves 30 are opened on the outer surface of the material distribution disk 29; The outer surface of the stirring barrel 21 is in contact with the inner surface of the cylinder body 1. The spoilers 22 are evenly arranged on the inner surface of the stirring barrel 21. The spoilers 22 are designed in an L shape. The lower end of the spoiler 22 is designed in an arc shape. The spoiler blocks 23 are arranged in a staggered manner on the outer surface of the upper end of the spoiler 22. A gap is left between the upper end surface of the spoiler 22 and the lower end surface of the baffle 24; The gear 25 is meshed with the stirring barrel 21 through the tooth blocks on the upper surface of the stirring barrel 21. The gear 25 and the material distribution disk 29 are respectively located on both sides of the impeller 18; The lower end of the liquid storage barrel 26 is communicated with the material distribution box 27. The inner surface of the material distribution box 27 is in contact with the outer surface of the material distribution disk 29; The rotating shaft of the material distribution disk 29 penetrates through the outer surface of the material distribution box 27. The rotating shaft of the material distribution disk 29 is fixedly connected to one side rotating shaft of the impeller 18; The sewage flowing through the water injection groove 17 drives the impeller 18 to rotate. The gear 25 fixedly connected to one end of the rotating shaft of the impeller 18 rotates accordingly. The gear 25 is meshed with the tooth blocks on the upper surface of the stirring barrel 21. At the same time, the rotating shaft of the material distribution disk 29 is fixedly connected to one side rotating shaft of the impeller 18. When the impeller 18 rotates due to the change in the sewage flow rate, the material distribution disk 29 inside the material distribution box 27 is driven to rotate through the transmission of the gear 25. Liquid storage grooves 30 are opened on the outer surface of the material distribution disk 29. During the rotation of the material distribution disk 29, the liquid storage grooves 30 will periodically align with the liquid storage barrel 26 and the leakage opening 28. The chemical agent first enters the liquid storage grooves 30. When the liquid storage grooves 30 are aligned with the leakage opening 28, the chemical agent leaks out to achieve quantitative discharge. When the sewage flow rate is large, the rotation speed of the impeller 18 is fast, the rotation frequency of the material distribution disk 29 is high, and the injected chemical agent increases. When the sewage flow rate is small, the rotation speed of the impeller 18 is slow, the rotation frequency of the material distribution disk 29 is low, and the injected chemical agent decreases. The injection amount of the chemical agent is accurately controlled to ensure that the insoluble substances in the sewage are fully precipitated; The stirring barrel 21 is rotatably installed inside the lower end of the cylinder body 1. The spoiler plates 22 and spoiler blocks 23 on its inner surface can enhance the stirring effect. When the stirring barrel 21 rotates, the spoiler plates 22 and spoiler blocks 23 will disturb the sewage, enabling the chemical agent to be fully mixed with the sewage. The spoiler plate 22 is L-shaped and has an arc-shaped design at the lower end. The spoiler blocks 23 are arranged in a staggered manner on its upper outer surface. This design can further improve the spoiler effect. The baffle plate 24 is arranged above the spoiler plate 22 and can block the sewage, causing the sewage to form a more complex flow path inside the stirring barrel 21, promoting the uniform mixing of the chemical agent and the sewage, and improving the quality of sewage treatment.

[0029] In the above specific embodiments, the purpose, technical solution, and beneficial effects of the present invention have been further described in detail. It should be understood that the above are only specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A sewage treatment device, comprising a cylinder (1), wherein a connecting flange (2) is fixedly provided at the upper end of the cylinder (1), and two cylinders (1) are fixedly connected by bolts, and a solenoid valve (3) is fixedly installed at the lower end of one side of the cylinder (1), and a water outlet (4) is fixedly connected to the lower end of the solenoid valve (3), characterized in that: The cylinder (1) is provided with a processing mechanism inside, and filtering and impurity removal can be performed simultaneously through a rotating switching filtering method, thereby greatly improving the overall sewage treatment efficiency; The processing mechanism comprises a central seat (5), a guide groove (6) is provided in the upper end of the central seat (5), and a water storage groove (7) is provided in the lower end of the central seat (5), a central motor (8) is fixedly installed in the lower end of the central seat (5), and the lower end of the output shaft of the central motor (8) passes through the lower surface of the central seat (5), and the lower end of the output shaft of the central motor (8) is fixedly connected to a rotating disk (9), and a filter plate (10) is embedded in the outer surface of the rotating disk (9).

2. A sewage treatment device according to claim 1, characterized in that: The treatment mechanism further comprises: a central column (11), a clearance groove (12) is provided on one side of the upper end of the central column (11), and a piston groove (13) is provided on the other side of the upper end of the central column (11), a piston plate (14) is arranged inside the piston groove (13), and a contact rod (15) is fixedly arranged on the lower surface of the piston plate (14), and the lower end of the contact rod (15) passes through the upper outer surface of the central column (11), and a waste discharge port (16) is provided on the side surface of the cylinder (1) directly facing the piston plate (14), a water injection groove (17) is provided inside the central column (11), and a rotating impeller (18) is installed inside the middle side surface of the central column (11), both ends of the rotating shaft of the impeller (18) pass through the outer surface of the central column (11), and both ends of the rotating shaft of the impeller (18) are fixedly arranged with a fixing plate (19), and a return spring (20) is connected between the contact rod (15) and the upper outer surface of the central column (11).

3. A sewage treatment device according to claim 2, characterized in that: The treatment mechanism also includes a flocculation and stirring mechanism, which ensures effective precipitation treatment of intolerant substances in the sewage by automatically injecting chemical agents along with the sewage flow; The flocculation and stirring mechanism comprises a stirring barrel (21), the stirring barrel (21) being rotatably mounted inside the lower end of the cylinder (1), and a spoiler (22) being fixedly mounted on the inner surface of the stirring barrel (21), and a spoiler block (23) being fixedly mounted on the outer surface of the upper end of the spoiler (22), and a baffle plate (24) being fixedly mounted on the inner surface of the stirring barrel (21) above the spoiler (22), a gear (25) being fixedly connected to one end of the rotating shaft of the impeller (18), and gear blocks being evenly mounted on the upper surface of the stirring barrel (21), and a liquid storage barrel (26) being fixedly mounted on the outer surface of the cylinder (1) on one side, and a material distribution box (27) being fixedly mounted at the lower end of the liquid storage barrel (26), a material leakage port (28) being provided at the lower end of the material distribution box (27), and a rotatable material distribution disk (29) being mounted inside the material distribution box (27), and a liquid storage tank (30) being provided on the outer surface of the material distribution disk (29).

4. A sewage treatment device according to claim 2, characterized in that: The lower end of the guide groove (6) is connected to the water storage groove (7), and the water storage groove (7) is located directly above the clearance groove (12). The lower surface of the center seat (5) is inclined, and the lower surface of the center seat (5) is in contact with the upper surface of the turntable (9), and the lower surface of the turntable (9) is in contact with the upper end surface of the center column (11).

5. A sewage treatment device according to claim 2, characterized in that: The piston plate (14) and the piston groove (13) are connected by sliding friction, the lower end of the contact rod (15) is cylindrical, the upper end of the water injection groove (17) penetrates the lower end of the clearance groove (12), and the lower end of the water injection groove (17) penetrates the lower end surface of the center column (11), and a gap is left between the lower end surface of the center column (11) and the inner bottom surface of the cylinder (1).

6. A sewage treatment device according to claim 2, characterized in that: The outer surface of the impeller (18) fits the inner surface of the central column (11), and a blade on one side of the impeller (18) is located inside the water injection groove (17), and the fixing plate (19) is of arc-shaped design.

7. A sewage treatment device according to claim 3, characterized in that: The outer surface of the mixing barrel (21) is in contact with the inner surface of the barrel (1); the spoiler (22) is evenly arranged on the inner surface of the mixing barrel (21); the spoiler (22) is L-shaped; the lower end of the spoiler (22) is arc-shaped; the spoiler block (23) is staggered on the outer surface of the upper end of the spoiler (22); and a gap is left between the upper end surface of the spoiler (22) and the lower end surface of the baffle (24).

8. A sewage treatment device according to claim 3, characterized in that: The gear (25) is meshedly connected to the mixing barrel (21) via a tooth block on the upper surface of the mixing barrel (21), and the gear (25) and the material distribution plate (29) are respectively located on both sides of the impeller (18).

9. A sewage treatment device according to claim 3, characterized in that: The lower end of the liquid storage barrel (26) is connected to the material distribution box (27), and the inner surface of the material distribution box (27) is in contact with the outer surface of the material distribution plate (29).

10. A sewage treatment device according to claim 3, characterized in that: The rotating shaft of the material distribution plate (29) passes through the outer surface of the material distribution box (27), and the rotating shaft of the material distribution plate (29) is fixedly connected to a rotating shaft on one side of the impeller (18).

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