Precipitation device with cleaning function for wastewater treatment

Abstract

The utility model relates to the technical field of wastewater treatment devices, in particular to a precipitation device with a cleaning function for wastewater treatment. The problems that in the using process of a traditional wastewater treatment device, due to the fact that impurities are attached to the side wall of a cleaning structure, the cleaning structure cannot be cleaned in time, and the impurity cleaning efficiency is inconvenient to improve are solved. The utility model provides a precipitation device with a cleaning function for wastewater treatment. The precipitation device comprises a precipitation tank, a screening filter plate, a driving assembly, an intercepting assembly, a cleaning assembly, a flushing assembly and a stirring assembly, compared with a traditional wastewater treatment device, in the using process, the wastewater treatment device is provided with the cleaning and intercepting structure and the washing structure, primary impurity separation is conducted through a screening filter plate, then blocking and collecting are conducted in batches through the intercepting structure, and then particle impurities are cleaned through the cleaning structure; and in addition, the cleaning structure can be washed and cleaned through the washing structure, so that the impurity cleaning efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment devices, in particular to a sedimentation device for wastewater treatment with a cleaning function. Background Art

[0002] Industrial wastewater includes production wastewater, production sewage and cooling water, which refers to the wastewater and waste liquid generated during industrial production, containing industrial production materials, intermediate products, by-products and pollutants generated during the production process that are lost with water. Industrial wastewater has a wide variety and complex composition. However, in actual use, it is necessary to separate impurities through a screening structure, and to clean the impurities through a cleaning structure. Since the impurities may adhere to the side wall of the cleaning structure, the cleaning structure cannot be cleaned in time, thus making it inconvenient to improve the efficiency of impurity cleaning. Content of the Utility Model

[0003] In order to overcome the problem that in the process of using a wastewater treatment device, it is necessary to separate impurities through a screening structure, and to clean the impurities through a cleaning structure. Since the impurities may adhere to the side wall of the cleaning structure, the cleaning structure cannot be cleaned in time, thus making it inconvenient to improve the efficiency of impurity cleaning.

[0004] The technical solution of the utility model is: a sedimentation device for wastewater treatment with a cleaning function, including a sedimentation tank, a screening filter plate, a driving component, an intercepting component, a cleaning component, a flushing component and a stirring component; a screening filter plate is arranged inside the sedimentation tank, a driving component is arranged on the side wall of the sedimentation tank, an intercepting component is arranged at one end of the driving component, a cleaning component is arranged on one side of the sedimentation tank, a flushing component is arranged on one side of the cleaning component, and a stirring component is arranged inside the sedimentation tank.

[0005] Preferably, when the wastewater treatment device is in use, first, preliminary impurity separation is carried out through the screening filter plate. Then, by reciprocally rotating and adjusting the intercepting component, the particulate impurities can be intercepted and collected in batches, so that the particulate impurities can be cleaned in a controlled amount, and thus the efficiency of solid-liquid separation can be improved. Subsequently, the particulate impurities can be continuously cleaned through the cleaning component. In addition, the cleaning component can be flushed and cleaned through the flushing component, thereby improving the efficiency of impurity cleaning.

[0006] As a preference, the driving component includes a driving shaft, a driving gear, a driving motor and a fixing plate; a fixing plate is arranged on the side wall of the sedimentation tank, a driving motor is arranged above the fixing plate, the output end of the driving motor is provided with a driving shaft, and a driving gear is arranged at one end of the driving shaft; starting the driving motor can drive the driving shaft to rotate, and the driving shaft can drive the intercepting component to rotate and adjust through the driving gear.

[0007] Preferably, the interception component includes an interception filter plate, a rotating shaft, and a rotating gear; a rotating shaft is provided on the inner wall of the sedimentation tank, a rotating gear is provided at one end of the rotating shaft, and an interception filter plate is provided on the side wall of the rotating shaft. The interception filter plate is provided at one end of the screening filter plate; when wastewater is added to the sedimentation tank, preliminary impurity separation is first carried out through the screening filter plate. Impurities in the wastewater, especially larger solid particles, are intercepted by the screening filter plate and roll to the position of the interception filter plate due to the inclined setting of the screening filter plate. The interception filter plate plays a role of secondary interception and collection. When it is necessary to clean the impurities on the interception filter plate, starting the drive motor can drive the drive shaft to rotate. The drive shaft can drive the rotating gear to rotate through the drive gear, and the rotating gear can drive the interception filter plate to rotate and adjust through the rotating shaft. Subsequently, the particulate impurities roll to the position of the cleaning component. In addition, by reciprocally rotating and adjusting the interception filter plate, the particulate impurities can be intercepted and collected in batches, so that the particulate impurities can be cleaned quantitatively, and thus the efficiency of solid-liquid separation can be improved.

[0008] Preferably, the cleaning component includes a driving motor, a driving shaft, a driving wheel, and a rotating belt; a driving motor is provided on the side wall of the sedimentation tank, a driving shaft is provided at the output end of the driving motor, a driving wheel is provided outside the driving shaft, a rotating belt is provided outside the driving wheel, and the driving wheel is rotationally connected to the rotating belt; starting the driving motor can drive the driving shaft to rotate, and the driving shaft can drive the rotating belt to rotate through the driving wheel, so as to drive the cleaning component to rotate in a cycle.

[0009] Preferably, the cleaning component further includes a driven shaft, a driven wheel, a cleaning filter plate, and a collection box; a driven shaft is provided inside the sedimentation tank, a driven wheel is provided outside the driven shaft, the driven wheel is provided inside the rotating belt, the driven wheel is rotationally connected to the rotating belt, a cleaning filter plate is provided on the side wall of the rotating belt, multiple groups of cleaning filter plates are provided, and a collection box is provided on one side of the sedimentation tank; when the particulate impurities slide to the position of the cleaning filter plate, starting the driving motor can drive the driving shaft to rotate, the driving shaft can drive the rotating belt to rotate through the driving wheel, and the rotating belt can drive multiple groups of cleaning filter plates to rotate in a cycle, so as to continuously clean the particulate impurities. Subsequently, the particulate impurities are cleaned into the collection box.

[0010] Preferably, the flushing assembly includes a filter tank, a liquid extraction pump, a liquid extraction pipe, a spraying pipe and a spraying head; a filter tank is arranged inside the sedimentation tank, a liquid extraction pump is arranged inside the filter tank, a liquid extraction pipe is arranged above the liquid extraction pump, one end of the liquid extraction pipe is provided with a spraying pipe, and a plurality of spraying heads are arranged on the side wall of the spraying pipe. The spraying pipe is arranged on one side of the cleaning filter plate; under the action of the liquid extraction pump, the liquid is sucked from the filter tank into the liquid extraction pipe, and the liquid is transmitted to the spraying pipe through the liquid extraction pipe. After the liquid enters the spraying pipe, it is evenly sprayed out through a plurality of spraying heads on the side wall. The sprayed liquid covers the cleaning filter plate to form a liquid film. After the sprayed liquid forms a liquid film on the cleaning filter plate, it will carry away the impurities and dirt on the cleaning filter plate. During the flushing process, the impurities and dirt are flushed off the filter plate to achieve the purpose of cleaning the filter plate. After flushing, the liquid containing impurities may flow back to the sedimentation tank for further treatment or recycling. Under the continuous operation of the liquid extraction pump, the entire flushing process will continue continuously to keep the cleaning filter plate continuously clean.

[0011] Preferably, the stirring assembly includes a stirring motor, a stirring shaft and stirring rods; a stirring motor is arranged on the other side of the sedimentation tank, the output end of the stirring motor is provided with a stirring shaft, and a plurality of stirring rods are arranged on the side wall of the stirring shaft; when it is necessary to stir the substances in the sedimentation tank, start the stirring motor to transmit the rotational power to the stirring shaft through the output end, and the stirring shaft can drive a plurality of stirring rods to rotate together. During the rotation of the stirring rods, strong shear force and driving force are generated on the substances in the sedimentation tank, causing relative movement of the substances in the tank. This relative movement helps the mixing and uniform distribution of the substances, so as to achieve the purpose of mixing and stirring.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. Compared with the traditional wastewater treatment device, during use, it is necessary to separate impurities through a screening structure and clean the impurities through a cleaning structure. Since the impurities may adhere to the side wall of the cleaning structure, the cleaning structure cannot be cleaned in time, resulting in the problem that it is inconvenient to improve the impurity cleaning efficiency. This wastewater treatment device is provided with a cleaning and intercepting structure and a flushing structure. When the wastewater treatment device is in use, first, preliminary impurity separation is carried out through the screening filter plate. Then, by reciprocally rotating and adjusting the intercepting structure, the particulate impurities can be intercepted and collected in batches, so that the particulate impurities can be quantitatively cleaned, thereby improving the efficiency of solid-liquid separation. Subsequently, the particulate impurities can be continuously cleaned through the cleaning structure. In addition, the cleaning structure can be flushed and cleaned through the flushing structure, thereby improving the impurity cleaning efficiency;

[0014] 2. When the wastewater treatment device is in use, when wastewater is poured into the sedimentation tank, preliminary impurity separation is first carried out through the screening filter plate. Impurities in the wastewater, especially larger solid particles, are intercepted by the screening filter plate and roll to the position of the interception filter plate due to the inclined setting of the screening filter plate. The interception filter plate plays a role in secondary interception and collection. When it is necessary to clean the impurities on the interception filter plate, starting the drive motor can drive the drive shaft to rotate. The drive shaft can drive the rotating gear to rotate through the drive gear, and the rotating gear can drive the interception filter plate to rotate and adjust through the rotating shaft. Subsequently, the particulate impurities roll to the position of the cleaning assembly. In addition, by reciprocally rotating and adjusting the interception filter plate, the particulate impurities can be intercepted and collected in batches, so that the particulate impurities can be cleaned in a controlled amount, and thus the efficiency of solid-liquid separation can be improved.

[0015] 3. Under the action of the liquid extraction pump, the liquid is sucked from the filter tank into the liquid extraction pipe. The liquid is transmitted to the spraying pipe through the liquid extraction pipe. After the liquid enters the spraying pipe, it is evenly sprayed out through multiple groups of spray heads on the side wall. The sprayed liquid covers the cleaning filter plate and forms a liquid film. After the sprayed liquid forms a liquid film on the cleaning filter plate, it will carry away the impurities and dirt on the cleaning filter plate. During the flushing process, the impurities and dirt are washed off the filter plate to achieve the purpose of cleaning the filter plate. After flushing, the liquid containing impurities may flow back to the sedimentation tank for further treatment or recycling. Under the continuous operation of the liquid extraction pump, the entire flushing process will continue continuously to keep the cleaning filter plate continuously clean, thereby improving the efficiency of impurity cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a first three-dimensional structural schematic diagram of a sedimentation device for wastewater treatment with a cleaning function according to the present utility model;

[0017] Figure 2 Shown is a first partial three-dimensional structural schematic diagram of a sedimentation device for wastewater treatment with a cleaning function according to the present utility model;

[0018] Figure 3 Shown is a second partial three-dimensional structural schematic diagram of a sedimentation device for wastewater treatment with a cleaning function according to the present utility model;

[0019] Figure 4 Shown is a third partial three-dimensional structural schematic diagram of a sedimentation device for wastewater treatment with a cleaning function according to the present utility model;

[0020] Description of reference numerals: 1, driving assembly; 2, intercepting assembly; 3, cleaning assembly; 4, flushing assembly; 5, stirring assembly; 6, sedimentation tank; 7, screening filter plate; 101, driving shaft; 102, driving gear; 103, driving motor; 104, fixing plate; 201, intercepting filter plate; 202, rotating shaft; 203, rotating gear; 301, driving motor; 302, driving shaft; 303, driving wheel; 304, rotating belt; 305, driven shaft; 306, driven wheel; 307, cleaning filter plate; 308, collection box; 401, filtering box; 402, liquid extraction pump; 403, liquid extraction pipe; 404, spraying pipe; 405, spraying head; 501, stirring motor; 502, stirring shaft; 503, stirring rod. Detailed implementation mode

[0021] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Please refer to Figure 1 , the present utility model provides an embodiment: a sedimentation device for wastewater treatment with a dredging function, comprising a sedimentation tank 6, a screening filter plate 7, a driving assembly 1, an intercepting assembly 2, a cleaning assembly 3, a flushing assembly 4 and a stirring assembly 5; a screening filter plate 7 is arranged inside the sedimentation tank 6, a driving assembly 1 is arranged on the side wall of the sedimentation tank 6, an intercepting assembly 2 is arranged at one end of the driving assembly 1, a cleaning assembly 3 is arranged on one side of the sedimentation tank 6, a flushing assembly 4 is arranged on one side of the cleaning assembly 3, and a stirring assembly 5 is arranged inside the sedimentation tank 6.

[0023] Please refer to Figure 2, the driving assembly 1 includes a driving shaft 101, a driving gear 102, a driving motor 103 and a fixing plate 104; a fixing plate 104 is provided on the side wall of the sedimentation tank 6, a driving motor 103 is provided above the fixing plate 104, the output end of the driving motor 103 is provided with a driving shaft 101, and a driving gear 102 is provided at one end of the driving shaft 101; starting the driving motor 103 can drive the driving shaft 101 to rotate, and the driving shaft 101 can drive the intercepting assembly 2 to rotate and adjust through the driving gear 102; the intercepting assembly 2 includes an intercepting filter plate 201, a rotating shaft 202 and a rotating gear 203; a rotating shaft 202 is provided on the inner wall of the sedimentation tank 6, a rotating gear 203 is provided at one end of the rotating shaft 202, and an intercepting filter plate 201 is provided on the side wall of the rotating shaft 202, and the intercepting filter plate 201 is provided at one end of the screening filter plate 7; when the wastewater is filled into the sedimentation tank 6, preliminary impurity separation is first carried out through the screening filter plate 7, and the impurities in the wastewater, especially larger solid particles, are intercepted by the screening filter plate 7 and roll to the position of the intercepting filter plate 201 due to the inclined setting of the screening filter plate 7. The intercepting filter plate 201 plays a role in secondary interception and collection. When it is necessary to clean the impurities on the intercepting filter plate 201, starting the driving motor 103 can drive the driving shaft 101 to rotate, and the driving shaft 101 can drive the rotating gear 203 to rotate through the driving gear 102, and the rotating gear 203 can drive the intercepting filter plate 201 to rotate and adjust through the rotating shaft 202. Subsequently, the particulate impurities roll to the position of the cleaning assembly 3. In addition, by reciprocally rotating and adjusting the intercepting filter plate 201, the particulate impurities can be intercepted and collected in batches, so that the particulate impurities can be cleaned in a controlled amount, and thus the efficiency of solid-liquid separation can be improved; the cleaning assembly 3 includes a driving motor 301, a driving shaft 302, a driving wheel 303 and a rotating belt 304; a driving motor 301 is provided on the side wall of the sedimentation tank 6, the output end of the driving motor 301 is provided with a driving shaft 302, a driving wheel 303 is provided outside the driving shaft 302, a rotating belt 304 is provided outside the driving wheel 303, and the driving wheel 303 is rotationally connected to the rotating belt 304; starting the driving motor 301 can drive the driving shaft 302 to rotate, and the driving shaft 302 can drive the rotating belt 304 to rotate through the driving wheel 303, so as to drive the cleaning assembly 3 to rotate in a cycle.

[0024] Please refer to Figures 3 - 4, in this embodiment, the cleaning assembly 3 further includes a driven shaft 305, a driven pulley 306, a cleaning filter plate 307 and a collection box 308; a driven shaft 305 is arranged inside the sedimentation tank 6, a driven pulley 306 is arranged outside the driven shaft 305, the driven pulley 306 is arranged inside the rotating belt 304, the driven pulley 306 is rotationally connected to the rotating belt 304, a cleaning filter plate 307 is arranged on the side wall of the rotating belt 304, multiple groups of cleaning filter plates 307 are arranged, and a collection box 308 is arranged on one side of the sedimentation tank 6; when the particulate impurities slide to the position of the cleaning filter plate 307, starting the driving motor 301 can drive the driving shaft 302 to rotate, the driving shaft 302 can drive the rotating belt 304 to rotate through the driving pulley 303, and the rotating belt 304 can drive multiple groups of cleaning filter plates 307 to rotate in a cycle, so as to continuously clean the particulate impurities. Subsequently, the particulate impurities are cleaned into the interior of the collection box 308; the flushing assembly 4 includes a filter box 401, a liquid extraction pump 402, a liquid extraction pipe 403, a spraying pipe 404 and a spraying head 405; a filter box 401 is arranged inside the sedimentation tank 6, a liquid extraction pump 402 is arranged inside the filter box 401, a liquid extraction pipe 403 is arranged above the liquid extraction pump 402, one end of the liquid extraction pipe 403 is provided with a spraying pipe 404, multiple groups of spraying heads 405 are arranged on the side wall of the spraying pipe 404, and the spraying pipe 404 is arranged on one side of the cleaning filter plate 307; under the action of the liquid extraction pump 402, the liquid is sucked from the filter box 401 into the liquid extraction pipe 403, the liquid is transmitted to the spraying pipe 404 through the liquid extraction pipe 403, after the liquid enters the spraying pipe 404, it is evenly sprayed out through multiple groups of spraying heads 405 on the side wall, and the sprayed liquid covers the cleaning filter plate 307 to form a liquid film. After the sprayed liquid forms a liquid film on the cleaning filter plate 307, it will carry away the impurities and dirt on the cleaning filter plate 307. During the flushing process of the liquid, the impurities and dirt are flushed off the filter plate to achieve the purpose of cleaning the filter plate. After flushing, the liquid containing impurities may flow back to the sedimentation tank 6 for further treatment or recycling. Under the continuous operation of the liquid extraction pump 402, the entire flushing process will proceed continuously to keep the cleaning filter plate 307 continuously clean; the stirring assembly 5 includes a stirring motor 501, a stirring shaft 502 and stirring rods 503; a stirring motor 501 is arranged on the other side of the sedimentation tank 6, an output end of the stirring motor 501 is provided with a stirring shaft 502, multiple groups of stirring rods 503 are arranged on the side wall of the stirring shaft 502; when it is necessary to stir the substances in the sedimentation tank 6, starting the stirring motor 501 transmits the rotational power to the stirring shaft 502 through the output end, and the stirring shaft 502 can drive multiple groups of stirring rods 503 to rotate together. During the rotation of the stirring rods 503, strong shear force and driving force are generated on the substances in the sedimentation tank 6, causing relative movement of the substances in the tank. This relative movement helps the mixing and uniform distribution of the substances, so as to achieve the purpose of mixing and stirring;

[0025] When the wastewater treatment device is in use and wastewater is filled into the sedimentation tank 6, initial impurity separation is first carried out through the screening filter plate 7. Impurities in the wastewater, especially larger solid particles, are intercepted by the screening filter plate 7 and roll to the position of the interception filter plate 201 due to the inclined setting of the screening filter plate 7. The interception filter plate 201 plays a role in secondary interception and collection;

[0026] When it is necessary to clean the impurities on the interception filter plate 201, starting the drive motor 103 can drive the drive shaft 101 to rotate. The drive shaft 101 can then drive the rotating gear 203 to rotate through the drive gear 102. The rotating gear 203 can drive the interception filter plate 201 to rotate and adjust through the rotating shaft 202. Subsequently, the particulate impurities roll to the position of the cleaning assembly 3;

[0027] In addition, by reciprocally rotating and adjusting the interception filter plate 201, the particulate impurities can be intercepted and collected in batches, so that the particulate impurities can be cleaned in a controlled amount, and thus the efficiency of solid-liquid separation can be improved;

[0028] Then, when the particulate impurities slide to the position of the cleaning filter plate 307, starting the driving motor 301 can drive the driving shaft 302 to rotate. The driving shaft 302 can then drive the rotating belt 304 to rotate through the driving wheel 303. The rotating belt 304 can drive multiple groups of cleaning filter plates 307 to rotate in a cycle, so that the particulate impurities can be continuously cleaned. Subsequently, the particulate impurities are cleaned into the interior of the collection box 308;

[0029] In addition, under the action of the liquid extraction pump 402, the liquid is sucked from the filtration box 401 into the liquid extraction pipe 403. The liquid is transmitted through the liquid extraction pipe 403 to the spraying pipe 404. After the liquid enters the spraying pipe 404, it is evenly sprayed out through multiple groups of spray heads 405 on the side wall. The sprayed liquid covers the cleaning filter plate 307 to form a liquid film. After the sprayed liquid forms a liquid film on the cleaning filter plate 307, it will carry away the impurities and dirt on the cleaning filter plate 307. During the flushing process of the liquid, the impurities and dirt are washed off from the filter plate to achieve the purpose of cleaning the filter plate;

[0030] After flushing, the liquid containing impurities may flow back to the sedimentation tank 6 for further treatment or recycling. Under the continuous operation of the liquid extraction pump 402, the entire flushing process will proceed continuously, maintaining the continuous cleaning of the cleaning filter plate 307, and thus the efficiency of impurity cleaning can be improved.

[0031] Through the above steps, when the wastewater treatment device is in use, first, preliminary impurity separation is carried out through the screening filter plate 7. Then, by reciprocally rotating and adjusting the interception component 2, batch interception and collection of particulate impurities can be carried out, so that the particulate impurities can be cleaned in a controlled amount, thereby improving the efficiency of solid-liquid separation. Subsequently, the particulate impurities can be continuously cleaned through the cleaning component 3. In addition, the cleaning component 3 can be flushed and cleaned through the flushing component 4, thereby improving the efficiency of impurity cleaning.

[0032] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A sedimentation device for wastewater treatment with a dredging function, comprising a sedimentation tank (6), characterized in that: It also includes a screening filter plate (7), a driving component (1), an intercepting component (2), a cleaning component (3), a flushing component (4) and a stirring component (5); a screening filter plate (7) is arranged inside the sedimentation tank (6), a driving component (1) is arranged on the side wall of the sedimentation tank (6), an intercepting component (2) is arranged at one end of the driving component (1), a cleaning component (3) is arranged on one side of the sedimentation tank (6), a flushing component (4) is arranged on one side of the cleaning component (3), and a stirring component (5) is arranged inside the sedimentation tank (6).

2. The sedimentation device for wastewater treatment with a dredging function according to claim 1, characterized in that: The driving component (1) includes a driving shaft (101), a driving gear (102), a driving motor (103) and a fixing plate (104); a fixing plate (104) is arranged on the side wall of the sedimentation tank (6), a driving motor (103) is arranged above the fixing plate (104), a driving shaft (101) is arranged at the output end of the driving motor (103), and a driving gear (102) is arranged at one end of the driving shaft (101).

3. The sedimentation device for wastewater treatment with a dredging function according to claim 1, characterized in that: The intercepting component (2) includes an intercepting filter plate (201), a rotating shaft (202) and a rotating gear (203); a rotating shaft (202) is arranged on the inner wall of the sedimentation tank (6), a rotating gear (203) is arranged at one end of the rotating shaft (202), an intercepting filter plate (201) is arranged on the side wall of the rotating shaft (202), and the intercepting filter plate (201) is arranged at one end of the screening filter plate (7).

4. A sedimentation device for wastewater treatment with a dredging function according to claim 1, characterized in that: The cleaning component (3) includes a driving motor (301), a driving shaft (302), a driving wheel (303) and a rotating belt (304); a driving motor (301) is arranged on the side wall of the sedimentation tank (6), a driving shaft (302) is arranged at the output end of the driving motor (301), a driving wheel (303) is arranged outside the driving shaft (302), a rotating belt (304) is arranged outside the driving wheel (303), and the driving wheel (303) is rotationally connected to the rotating belt (304).

5. The sedimentation device for wastewater treatment with a dredging function according to claim 1, characterized in that: The cleaning component (3) also includes a driven shaft (305), a driven wheel (306), a cleaning filter plate (307) and a collection box (308); a driven shaft (305) is arranged inside the sedimentation tank (6), a driven wheel (306) is arranged outside the driven shaft (305), the driven wheel (306) is arranged inside the rotating belt (304), the driven wheel (306) is rotationally connected to the rotating belt (304), a cleaning filter plate (307) is arranged on the side wall of the rotating belt (304), multiple groups of cleaning filter plates (307) are arranged, and a collection box (308) is arranged on one side of the sedimentation tank (6).

6. The sedimentation device for wastewater treatment with a dredging function according to claim 1, characterized in that: The flushing assembly (4) includes a filter tank (401), a liquid extraction pump (402), a liquid extraction pipe (403), a spraying pipe (404) and a spraying head (405); a filter tank (401) is arranged inside the sedimentation tank (6), a liquid extraction pump (402) is arranged inside the filter tank (401), a liquid extraction pipe (403) is arranged above the liquid extraction pump (402), one end of the liquid extraction pipe (403) is provided with a spraying pipe (404), spraying heads (405) are arranged on the side wall of the spraying pipe (404), multiple groups of spraying heads (405) are provided, and the spraying pipe (404) is arranged on one side of the cleaning filter plate (307).

7. A sedimentation device for wastewater treatment with a dredging function according to claim 1, characterized in that: The stirring assembly (5) includes a stirring motor (501), a stirring shaft (502) and stirring rods (503); a stirring motor (501) is arranged on the other side of the sedimentation tank (6), the output end of the stirring motor (501) is provided with a stirring shaft (502), stirring rods (503) are arranged on the side wall of the stirring shaft (502), and multiple groups of stirring rods (503) are provided.

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