Sewage treatment equipment with desilting function

Abstract

The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to sewage treatment equipment with a desilting function, which comprises a sedimentation tank, a water inlet pipe connected to the side surface of the sedimentation tank, a drain pipe connected to the side surface of the other side of the sedimentation tank, a mounting bracket arranged at the top of the sedimentation tank, and a first electric cylinder arranged at the top of the mounting bracket, the bottom end of a piston rod of the first electric cylinder is connected with a first connecting rod, the bottom end of the first connecting rod is connected with a filter screen fixing support, a filter screen is fixedly installed on the inner side of the filter screen fixing support, a guide rail is fixedly installed on the inner side of the filter screen fixing support, and two sets of sliding blocks are slidably installed in the guide rail. The top of the sliding block is rotatably provided with a first water baffle and a second water baffle, the first water baffle and the second water baffle are rotatably connected, and the top of the second water baffle is connected with a water baffle opening and closing driving mechanism. The downtime required by desilting is effectively shortened, and the desilting efficiency of the sedimentation tank is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewage treatment equipment, specifically relating to a sewage treatment equipment with dredging function. Background Technology

[0002] In wastewater treatment, sedimentation often involves using sedimentation tanks to allow suspended solids to settle by gravity and the supernatant to be discharged, which then complements subsequent processes to achieve compliant treatment. The common practice in engineering is to install inlet and outlet pipes and basic valves in the sedimentation tank, collecting sludge in the low-lying area at the bottom or in a sludge collection trough. After a period of operation, the tank is shut down, emptied, or a bypass is established, and the sludge is then removed manually, pumped out, or transported by an external conveying device. While this approach is structurally simple, it often faces practical constraints on-site, such as prolonged downtime, repeated valve opening and closing, and the potential for secondary pollution to spread.

[0003] The problem with existing technology is that it lacks a coordinated structure for local isolation and automatic sludge removal in the case of "non-drainage" operation. When attempting to carry out sludge removal while the pool is still filled with liquid, the hydraulic disturbance caused by the sewage in the pool will cause floating objects and bottom sludge to be rolled up again. As a result, the only option is to stop the machine and drain it, followed by inefficient manual intermittent cleaning, which leads to low sludge removal efficiency and long downtime. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a sewage treatment device with a dredging function, which eliminates the need to empty the sewage in the sedimentation tank before dredging. Combined with the automatic dredging function, it effectively reduces the downtime required for dredging and improves the efficiency of sedimentation tank dredging.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sewage treatment device with sludge removal function, comprising a sedimentation tank, an inlet pipe connected to one side of the sedimentation tank, a drain pipe connected to the other side of the sedimentation tank, a mounting bracket on the top of the sedimentation tank, a first electric cylinder on the top of the mounting bracket, the bottom end of the piston rod of the first electric cylinder being connected to a first connecting rod, the bottom end of the first connecting rod being connected to a filter screen fixing bracket, a filter screen being fixedly installed on the inner side of the filter screen fixing bracket, a guide rail being fixedly installed on the inner side of the filter screen fixing bracket, two sets of sliders being slidably installed inside the guide rail, a first baffle plate and a second baffle plate being rotatably provided on the top of the sliders, the first baffle plate and the second baffle plate being rotatably connected, the top of the second baffle plate being connected to a baffle plate opening and closing drive mechanism, a sludge sedimentation tank at the bottom of the sedimentation tank, a sludge discharge pipe connected to one end of the sludge sedimentation tank, a sludge discharge port connected to the bottom of the sludge discharge pipe, a sludge discharge valve connected to the bottom of the sludge discharge port, a motor connected to one end of the sludge discharge pipe, and the output end of the motor being connected to a screw conveyor shaft.

[0006] The beneficial effects of this utility model are as follows: This device can effectively remove sludge without removing sewage from the sedimentation tank. During sludge removal, the inlet control valve is closed to stop water injection into the sedimentation tank. The first electric cylinder is controlled to push the filter screen fixing bracket downward, causing the filter screen to move downward. Simultaneously, the second electric cylinder is controlled to extend its piston rod, causing the first and second baffle plates, along with the guide rail and slider, to descend synchronously with the filter screen fixing bracket. The filter screen presses down the floating objects that are in close contact with its bottom. After the filter screen fixing bracket descends to the point where its bottom contacts the top of the sludge sedimentation tank, the first electric cylinder stops extending its piston rod, while the second electric cylinder continues to extend its piston rod. This pushes the second pin shaft downward through the second connecting rod. The rotational relationships between the second pin shaft and the second pin seat, the first and second baffle plates, the first pin seat and the first pin shaft, and the slider and guide rail are all considered. The sliding relationship between the first and second baffle plates causes them to rotate and unfold, forming a flat surface that seals the top of the filter screen fixing bracket. At this point, water above the first and second baffle plates in the sedimentation tank cannot flow in large quantities below the filter screen. The discharge valve can then be opened, and the motor can be controlled to drive the screw conveyor shaft to rotate. The screw conveyor shaft transports the sludge settled in the sedimentation tank and the floating debris pressed into the sedimentation tank towards the discharge pipe, and then discharges it through the discharge port. This gives the device an automatic sludge removal and cleaning function. Due to the obstruction of the first and second baffle plates, only a small amount of wastewater above the first and second baffle plates in the sedimentation tank can flow in through the gaps between the first and second baffle plates and the sedimentation tank. Therefore, it is not necessary to empty the sedimentation tank before cleaning. Combined with the automatic sludge removal and cleaning function, the downtime required for cleaning is effectively reduced, and the efficiency of sedimentation tank cleaning is improved.

[0007] To control the water inlet and outlet of this device:

[0008] As a further improvement to the above technical solution: one end of the water inlet pipe is connected to a water inlet control valve, and one end of the drain pipe is connected to a drain control valve.

[0009] The inlet control valve is used to control the flow of water into the inlet pipe, and the drain control valve is used to control the flow of water out of the drain pipe.

[0010] To improve the installation stability of the filter screen mounting bracket:

[0011] As a further improvement to the above technical solution: a sliding rod is slidably installed between the top and bottom of the mounting bracket, and the bottom end of the sliding rod is connected to the filter screen fixing bracket.

[0012] The beneficial effect of this improvement is that the sliding rod design enhances the installation stability of the filter screen fixing bracket.

[0013] As a further improvement to the above technical solution: the water inlet pipe is located below the filter screen, and the drain pipe is located above the filter screen.

[0014] The beneficial effects of this improvement are as follows: wastewater is injected into the sedimentation tank through the inlet pipe. Solid impurities in the wastewater settle in the sludge sedimentation tank under the action of gravity, while floating objects are restricted to the bottom of the filter screen. The wastewater that has filtered out solid impurities is discharged to the next process equipment through the drain pipe. Compared with conventional sedimentation tanks, when this device is used, floating objects will not float to the water surface, but will be restricted to the bottom of the sedimentation tank along with the sediment. After the wastewater passes through the filter screen, it flows out from the drain pipe as the water level rises.

[0015] As a further improvement to the above technical solution: the top of the slider is fixedly provided with a first pin seat, the first pin seat is rotatably connected to the first pin shaft, and one end of the first pin shaft at the top of the two sets of sliders is respectively connected to the first baffle plate and the second baffle plate.

[0016] To drive the folding and unfolding of the first and second water baffles:

[0017] As a further improvement to the above technical solution: the water baffle opening and closing drive mechanism includes a second pin seat disposed above the second water baffle, the second pin seat being rotatably connected to a second pin shaft, one end of the second pin shaft being connected to a second connecting rod, the top of the second connecting rod being connected to the end of the piston rod of the second electric cylinder, and the second electric cylinder being fixed on the top of the mounting bracket.

[0018] The second connecting rod pushes the second pin shaft down. Through the rotational relationship between the second pin shaft and the second pin seat, the rotational relationship between the first baffle plate and the second baffle plate, the rotational relationship between the first pin seat and the first pin shaft, and the sliding relationship between the slider and the guide rail, the first baffle plate and the second baffle plate are rotated and unfolded, so that the first baffle plate and the second baffle plate form a plane. When the second connecting rod performs the piston rod retraction action, the first baffle plate and the second baffle plate can be pulled to fold.

[0019] As a further improvement to the above technical solution: a support is fixedly provided on the outside of the sedimentation tank, and the bottom of the support is in contact with the ground.

[0020] The bracket is used to support this device.

[0021] In summary, the beneficial effects of this case are as follows:

[0022] This device can effectively remove sludge without draining wastewater from the sedimentation tank. During sludge removal, the inlet control valve is closed to stop water injection into the sedimentation tank. The first electric cylinder is controlled to push the filter screen fixing bracket downwards, causing the filter screen to move downwards. Simultaneously, the second electric cylinder is controlled to extend its piston rod, causing the first and second baffle plates, along with the guide rail and slider, to descend synchronously with the filter screen fixing bracket. The filter screen presses down any floating debris adhering to its bottom. Once the filter screen fixing bracket has descended to the point where its bottom contacts the top of the sludge sedimentation tank, the first electric cylinder stops extending its piston rod, while the second electric cylinder continues extending its piston rod. This, in turn, pushes the second pin shaft downwards via the second connecting rod. The device utilizes the rotational relationships between the second pin shaft and the second pin seat, the first and second baffle plates, the first pin seat and the first pin shaft, and the sliding relationship between the slider and the guide rail. The system drives the first and second baffle plates to rotate and unfold, forming a flat plane that seals the top of the filter screen fixing bracket. At this time, the water above the first and second baffle plates in the sedimentation tank cannot flow into the area below the filter screen in large quantities. Then, the sludge discharge valve can be opened, and the motor can be controlled to drive the screw conveyor shaft to rotate. The screw conveyor shaft transports the sludge settled in the sludge sedimentation tank and the floating matter pressed into the sludge sedimentation tank toward the sludge discharge pipe and discharges it through the sludge discharge port. This gives the device an automatic sludge removal and discharge function. Under the obstruction of the first and second baffle plates, only a small amount of sewage above the first and second baffle plates in the sedimentation tank can flow in through the gap between the first and second baffle plates and the sedimentation tank. Therefore, it is not necessary to empty the sewage in the sedimentation tank before sludge removal. Combined with the automatic sludge removal and discharge function, the downtime required for sludge removal is effectively reduced, and the efficiency of sedimentation tank sludge removal is improved.

[0023] When using this device, after opening the inlet and outlet control valves, wastewater is injected into the sedimentation tank through the inlet pipe. Solid impurities in the wastewater settle in the sludge sedimentation tank under gravity, while floating objects are confined below the filter screen. The wastewater with the solid impurities filtered out is discharged to the next process equipment through the outlet pipe. Compared with conventional sedimentation tanks, when using this device, floating objects do not float to the water surface, but are confined to the bottom of the sedimentation tank along with the sediment, and can be discharged together with the settled sludge, which facilitates the cleaning of floating objects.

[0024] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the left front axonometric structure of this utility model;

[0026] Figure 2This is an isometric sectional view of the present invention;

[0027] Figure 3 This is an isometric sectional view of the present invention during dredging.

[0028] Figure 4 This is an isometric view of the back of the structure such as the water baffle in this utility model;

[0029] Figure 5 This is an isometric sectional view of the filter screen fixing bracket in this utility model;

[0030] Figure 6 This is a schematic diagram of the bottom cross-sectional structure of the filter screen fixing bracket in this utility model.

[0031] In the diagram: 1. Sedimentation tank; 2. Inlet pipe; 3. Inlet control valve; 4. Drain pipe; 5. Drain control valve; 6. Mounting bracket; 7. First electric cylinder; 8. First connecting rod; 9. Slide rod; 10. Filter screen fixing bracket; 11. Filter screen; 12. Guide rail; 13. Sliding block; 14. First pin seat; 15. First pin shaft; 16. First baffle plate; 17. Second baffle plate; 18. Second pin seat; 19. Second pin shaft; 20. Second connecting rod; 21. Second electric cylinder; 22. Sludge sedimentation tank; 23. Sludge discharge pipe; 24. Sludge discharge port; 25. Sludge discharge valve; 26. Motor; 27. Screw conveyor shaft. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0033] like Figure 1-6As shown, a sewage treatment device with sludge removal function includes a sedimentation tank 1. An inlet pipe 2 is connected to one side of the sedimentation tank 1, and a drain pipe 4 is connected to the other side of the sedimentation tank 1. A mounting bracket 6 is provided on the top of the sedimentation tank 1, and a first electric cylinder 7 is provided on the top of the mounting bracket 6. The bottom end of the piston rod of the first electric cylinder 7 is connected to a first connecting rod 8, and the bottom end of the first connecting rod 8 is connected to a filter screen fixing bracket 10. A filter screen 11 is fixedly installed on the inner side of the filter screen fixing bracket 10, and a guide rail 12 is fixedly installed on the inner side of the filter screen fixing bracket 10. A sliding mechanism is installed inside the guide rail 12. Two sets of sliders 13 are provided. The top of each slider 13 is rotatably equipped with a first baffle plate 16 and a second baffle plate 17. The first baffle plate 16 and the second baffle plate 17 are rotatably connected. The top of the second baffle plate 17 is connected to a baffle plate opening and closing drive mechanism. The bottom of the sedimentation tank 1 is provided with a sludge sedimentation tank 22. One end of the sludge sedimentation tank 22 is connected to a sludge discharge pipe 23. The bottom of the sludge discharge pipe 23 is connected to a sludge discharge port 24. The bottom of the sludge discharge port 24 is connected to a sludge discharge valve 25. One end of the sludge discharge pipe 23 is connected to a motor 26. The output end of the motor 26 is connected to a screw conveyor shaft 27.

[0034] This device can effectively remove sludge without draining the wastewater from the sedimentation tank. During sludge removal, the inlet control valve 3 is closed to stop water injection into the sedimentation tank 1. The first electric cylinder 7 is controlled to push the filter screen fixing bracket 10 downward, causing the filter screen 11 to move downward. Simultaneously, the second electric cylinder 21 is controlled to extend its piston rod, causing the first baffle plate 16 and the second baffle plate 17, along with the guide rail 12 and the slider 13, to descend synchronously with the filter screen fixing bracket 10. The filter screen 11 then removes the floating sludge that is tightly attached to its bottom. As the material is pressed downwards, the filter screen fixing bracket 10 descends until its bottom contacts the top of the sludge settling tank 22. Then, the first electric cylinder 7 stops extending, and the second electric cylinder 21 continues to extend its piston rod. This, in turn, pushes the second pin 19 downwards via the second connecting rod 20. The movement of the second pin 19 down is controlled by the rotational relationships between the second pin 19 and the second pin seat 18, the first baffle plate 16 and the second baffle plate 17, the first pin seat 14 and the first pin 15, and the sliding relationship between the slider 13 and the guide rail 12. The system drives the first baffle plate 16 and the second baffle plate 17 to rotate and unfold, so that the first baffle plate 16 and the second baffle plate 17 form a plane, sealing the top of the filter screen fixing bracket 10. At this time, the water above the first baffle plate 16 and the second baffle plate 17 in the sedimentation tank 1 cannot flow into the area below the filter screen 11 in large quantities. At this time, the sludge discharge valve 25 can be opened, and the motor 26 can be controlled to drive the screw conveyor shaft 27 to rotate. The screw conveyor shaft 27 then moves the sludge settled in the sludge sedimentation tank 22 and the floating objects pressed into the sludge sedimentation tank 22 towards the surface. The sludge is transported through the discharge pipe 23 and discharged through the discharge port 24, enabling the device to have an automatic sludge removal and discharge function. Under the obstruction of the first baffle plate 16 and the second baffle plate 17, only a small amount of sewage above the first baffle plate 16 and the second baffle plate 17 in the sedimentation tank 1 can flow in through the gap between the first baffle plate 16 and the second baffle plate 17 and the sedimentation tank 1. Therefore, it is not necessary to empty the sewage in the sedimentation tank 1 before sludge removal. Combined with the automatic sludge removal and discharge function, the downtime required for sludge removal is effectively reduced, and the efficiency of sedimentation tank sludge removal is improved.

[0035] One end of the water inlet pipe 2 is connected to the water inlet control valve 3, and one end of the drain pipe 4 is connected to the drain control valve 5.

[0036] The inlet control valve 3 is used to control the water supply on / off of the inlet pipe 2, and the drain control valve 5 is used to control the drainage on / off of the drain pipe 4.

[0037] A slide rod 9 is slidably installed between the top and bottom of the mounting bracket 6, and the bottom end of the slide rod 9 is connected to the filter screen fixing bracket 10.

[0038] The sliding rod 9 improves the installation stability of the filter screen fixing bracket 10.

[0039] The water inlet pipe 2 is located below the filter screen 11, and the drain pipe 4 is located above the filter screen 11.

[0040] Wastewater is injected into the sedimentation tank 1 through the inlet pipe 2. Solid impurities in the wastewater settle in the sludge sedimentation tank 22 under the action of gravity, while floating objects are restricted below the filter screen 11. The wastewater that has filtered out solid impurities is discharged to the next process equipment through the drain pipe 4. Compared with conventional sedimentation tanks, when this device is used, floating objects will not float to the water surface, but will be restricted to the bottom of the sedimentation tank along with the sediment. After the wastewater passes through the filter screen 11, it flows out from the drain pipe 4 as the water level rises.

[0041] The top of the slider 13 is fixedly provided with a first pin seat 14, which is rotatably connected to the first pin shaft 15. One end of the first pin shaft 15 at the top of the two sets of sliders 13 is respectively connected to the first baffle plate 16 and the second baffle plate 17.

[0042] The water baffle opening and closing drive mechanism includes a second pin seat 18 disposed above the second water baffle 17. The second pin seat 18 is rotatably connected to the second pin shaft 19. One end of the second pin shaft 19 is connected to the second connecting rod 20. The top of the second connecting rod 20 is connected to the piston rod end of the second electric cylinder 21. The second electric cylinder 21 is fixed on the top of the mounting bracket 6.

[0043] The second connecting rod 20 pushes the second pin 19 down. The rotational relationship between the second pin 19 and the second pin seat 18, the rotational relationship between the first baffle plate 16 and the second baffle plate 17, the rotational relationship between the first pin seat 14 and the first pin 15, and the sliding relationship between the slider 13 and the guide rail 12 cause the first baffle plate 16 and the second baffle plate 17 to rotate and unfold, so that the first baffle plate 16 and the second baffle plate 17 form a plane. When the second connecting rod 20 performs the piston rod retraction action, the first baffle plate 16 and the second baffle plate 17 can be pulled to fold.

[0044] A support is fixedly installed on the outside of the sedimentation tank 1, and the bottom of the support is in contact with the ground.

[0045] The bracket is used to support this device.

[0046] The working principle and usage process of this utility model are as follows: When using this device, after opening the inlet control valve 3 and the outlet control valve 5, sewage is injected into the sedimentation tank 1 through the inlet pipe 2. Solid impurities in the sewage settle in the sludge sedimentation tank 22 under gravity, while floating matter is confined below the filter screen 11. The sewage, having filtered out the solid impurities, is discharged to the next process equipment through the outlet pipe 4. Compared to conventional sedimentation tanks, in this device, floating matter does not float to the water surface but is confined to the bottom of the sedimentation tank along with the sediment, allowing it to be discharged along with the settled sludge, facilitating the cleaning of floating matter. Simultaneously, this device can effectively remove sludge without draining the sewage from the sedimentation tank. During sludge removal, the inlet control valve 3 is closed. Stop adding water to the sedimentation tank 1, control the first electric cylinder 7 to push the filter screen fixing bracket 10 downward, causing the filter screen 11 to move downward. At the same time, control the second electric cylinder 21 to extend the piston rod, so that the first baffle plate 16 and the second baffle plate 17, together with the guide rail 12 and the slider 13, descend synchronously with the descent of the filter screen fixing bracket 10. The filter screen 11 presses down the floating objects that are in close contact with its bottom. After the filter screen fixing bracket 10 is lowered to the point where its bottom contacts the top of the sludge sedimentation tank 22, control the first electric cylinder 7 to stop extending the piston rod, and continue to control the second electric cylinder 21 to extend the piston rod. The second connecting rod 20 pushes the second pin 19 downward. Through the rotational relationship between the second pin 19 and the second pin seat 18, The rotational relationship between the first baffle plate 16 and the second baffle plate 17, the rotational relationship between the first pin seat 14 and the first pin shaft 15, and the sliding relationship between the slider 13 and the guide rail 12 cause the first baffle plate 16 and the second baffle plate 17 to rotate and unfold, so that the first baffle plate 16 and the second baffle plate 17 form a plane, sealing the top of the filter screen fixing bracket 10. At this time, the water above the first baffle plate 16 and the second baffle plate 17 in the sedimentation tank 1 cannot flow into the area below the filter screen 11 in large quantities. At this time, the sludge discharge valve 25 can be opened, and the motor 26 can be controlled to drive the screw conveyor shaft 27 to rotate. The sludge settled in the sludge sedimentation tank 22 and the floating matter pressed into the sludge sedimentation tank 22 are transported towards the sludge discharge pipe 23 through the screw conveyor shaft 27. The wastewater is discharged through the discharge port 24, enabling the device to automatically clean and drain wastewater. Due to the obstruction of the first baffle plate 16 and the second baffle plate 17, only a small amount of wastewater above the first baffle plate 16 and the second baffle plate 17 can flow into the sedimentation tank 1 through the gap between the first baffle plate 16 and the second baffle plate 17 and the sedimentation tank 1. Therefore, it is not necessary to empty the wastewater in the sedimentation tank 1 before cleaning. Combined with the automatic cleaning and draining function, the downtime required for cleaning is effectively reduced, and the efficiency of sedimentation tank cleaning is improved. After the cleaning work is completed, the first electric cylinder 7 and the second electric cylinder 21 are controlled again to drive the filter screen fixing bracket 10 and the filter screen 11 to rise, while simultaneously driving the first baffle plate 16 and the second baffle plate 17 to fold back, so as not to obstruct water from passing through the filter screen 11.Then, the inlet control valve 3 can be reopened to initiate the sedimentation and filtration process for the wastewater.

[0047] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0048] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A sewage treatment device with dredging function, characterized in that: The system includes a sedimentation tank (1), with an inlet pipe (2) connected to one side and a drain pipe (4) connected to the other side. A mounting bracket (6) is provided on the top of the sedimentation tank (1), and a first electric cylinder (7) is provided on the top of the mounting bracket (6). The bottom end of the piston rod of the first electric cylinder (7) is connected to a first connecting rod (8), and the bottom end of the first connecting rod (8) is connected to a filter screen fixing bracket (10). A filter screen (11) is fixedly installed on the inner side of the filter screen fixing bracket (10), and a guide rail (12) is fixedly installed on the inner side of the filter screen fixing bracket (10). Two sets of sliders (13) are slidably installed inside the guide rail (12). The top of the slider (13) is rotatably provided with a first baffle plate (16) and a second baffle plate (17). The first baffle plate (16) and the second baffle plate (17) are rotatably connected. The top of the second baffle plate (17) is connected to the baffle plate opening and closing drive mechanism. The bottom of the sedimentation tank (1) is provided with a sludge sedimentation tank (22). One end of the sludge sedimentation tank (22) is connected to a sludge discharge pipe (23). The bottom of the sludge discharge pipe (23) is connected to a sludge discharge port (24). The bottom of the sludge discharge port (24) is connected to a sludge discharge valve (25). One end of the sludge discharge pipe (23) is connected to a motor (26). The output end of the motor (26) is connected to a screw conveyor shaft (27).

2. The sewage treatment equipment with dredging function according to claim 1, characterized in that: One end of the water inlet pipe (2) is connected to a water inlet control valve (3), and one end of the drain pipe (4) is connected to a drain control valve (5).

3. A sewage treatment device with dredging function according to claim 1, characterized in that: A slide rod (9) is slidably mounted between the top and bottom of the mounting bracket (6), and the bottom end of the slide rod (9) is connected to the filter screen fixing bracket (10).

4. A sewage treatment device with dredging function according to claim 1, characterized in that: The inlet pipe (2) is located below the filter screen (11), and the drain pipe (4) is located above the filter screen (11).

5. A sewage treatment device with dredging function according to claim 1, characterized in that: The top of the slider (13) is fixedly provided with a first pin seat (14), which is rotatably connected to the first pin shaft (15). One end of the first pin shaft (15) at the top of the two sets of sliders (13) is connected to the first baffle plate (16) and the second baffle plate (17) respectively.

6. A sewage treatment device with dredging function according to claim 1, characterized in that: The water baffle opening and closing drive mechanism includes a second pin seat (18) disposed above the second water baffle (17), the second pin seat (18) being rotatably connected to the second pin shaft (19), one end of the second pin shaft (19) being connected to the second connecting rod (20), the top of the second connecting rod (20) being connected to the piston rod end of the second electric cylinder (21), and the second electric cylinder (21) being fixed on the top of the mounting bracket (6).

7. A sewage treatment device with dredging function according to claim 1, characterized in that: The sedimentation tank (1) is fixedly equipped with a support on the outside, and the bottom of the support is in contact with the ground.

Images