Sewage filtering device

Abstract

The invention provides a sewage filtering device which comprises a box body, and a water inlet and a water outlet which are communicated with the inside and the outside are formed in the box body; the filter assembly is driven by a driving part and movably connected to the inner side of the box body in the circumferential direction of the filter assembly, the filter assembly is provided with multiple layers of filter screens in the radial direction, and the mesh number of the filter screens is increased layer by layer from inside to outside in the radial direction of the filter assembly. Wherein the interior of the filter screen located on the inner layer is arranged opposite to the water inlet, and the water outlet is located on the outer side of the filter screen on the outer layer. According to the sewage filtering device, multiple layers of filter screens with different mesh numbers are arranged, each layer of filter screen can specifically intercept particulate matters with different particle sizes, graded filtration is realized, the effluent quality is ensured to reach the standard, the flushing spray head and the brush are matched to realize flushing of the particulate matters on the filter screens, and the flushed particulate matters enter the sewage collecting tank and are discharged through the sludge pump; the manual maintenance workload is greatly reduced, and the operation and maintenance cost is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage filtration, and in particular to a sewage filtration device suitable for multiple scenarios such as industrial wastewater and aquaculture tail water. Background Art

[0002] In the purification of industrial wastewater and aquaculture tail water, microfiltration is a widely used device for filtering polluted particles.

[0003] The existing microfiltration machine has the following defects during application:

[0004] Existing microfiltration machines mainly use a rotary drum single-layer filter structure, which makes it difficult to balance filtration accuracy and filter clogging issues. When the filter mesh is too large, it cannot intercept tiny pollutants such as plankton and colloidal particles. As the particles move and decompose in the water, the subsequent processing load increases; when the mesh is too small, it is easy to cause filter clogging, increasing the backwash frequency and energy consumption. When the filter is clogged, it needs to be shut down for manual cleaning, which not only increases operation and maintenance costs, but also seriously affects the continuity of the water purification process, making it difficult to meet the demand for efficient water purification.

[0005] In addition, in terms of operating parameter control, the fixed drum filter area and speed cannot be dynamically adjusted according to changes in water quality, the energy consumption is too high, and the efficiency is low when treating wastewater on a large scale.

[0006] Therefore, in order to solve the above problems, the present invention proposes a sewage filtering device that can avoid filter clogging and can dynamically adjust to reduce energy consumption according to changes in water quality. Summary of the Invention

[0007] In order to solve the technical problems existing in the use of the above-mentioned existing microfiltration machine, the present invention provides a sewage filtering device.

[0008] According to one object of the present invention, the present invention provides a sewage filtering device, comprising:

[0009] A box body, wherein the box body is provided with a water inlet and a water outlet communicating with the inside and outside;

[0010] A cylindrical filter assembly, driven by a driving member and movably connected to the inner side of the housing along its own circumferential direction, wherein the filter assembly is provided with multiple layers of filter screens in the radial direction, the mesh count of the filter screens increasing from the inner side to the outer side of the filter assembly along the radial direction, wherein the inner side of the filter screen in the inner layer is arranged opposite to the water inlet, and the water outlet is located on the outer side of the filter screen in the outer layer;

[0011] A flushing nozzle and a sewage collection tank, wherein the flushing nozzle is arranged toward the radial outer side of the filter screen, the sewage collection tank is located on the radial inner side of the filter screen and is arranged relative to the flushing nozzle, the sewage collection tank is provided with a brush matching the radial inner wall of the filter screen, the brush is configured to be suitable for brushing the filter screen during the activity of the filter assembly, the sewage collection tank is used to collect particulate matter on the filter screen brushed off by the brush, and the sewage collection tank is connected to a sludge pump;

[0012] The control component is configured to obtain the water flow rate of the water outlet, the sewage discharge flow rate and turbidity of the sewage collection tank and the water level in the box body and control the connection between the driving member, the sludge pump and the flushing nozzle.

[0013] Preferably, the filter assembly includes an integrated reinforcement frame, the filter screen is mounted on the integrated reinforcement frame, the filter screen is installed in a petal-type manner, and the filter screen and the integrated reinforcement frame are detachably connected.

[0014] Preferably, the integrated reinforcement frame includes side baffles and side rings provided on opposite sides of the filter assembly in the axial direction, and reinforcing rods extending between the side baffles and the side rings, wherein the number of the reinforcing rods is multiple and the reinforcing rods are sequentially spaced apart along the circumference of the filter assembly;

[0015] The filter screen includes sub-filter screens arranged in sequence along the circumference of the filter assembly. The filter screen is covered on the outside of the integrated reinforcement frame. The filter screen is fixed to the integrated reinforcement frame by screws on both sides and the outside.

[0016] Preferably, the driving member and the pulley groove are respectively provided at both ends of the integrated reinforcement frame in the axial direction of the filter assembly, a support frame is installed on the inner side of the box body, and a pulley matching the pulley groove is installed on the support frame;

[0017] A supporting roller frame is further provided on the inner side of the box body, and the supporting roller frame is supported and connected to the outer side of the integrated reinforcement frame.

[0018] Preferably, the brush is movably connected to the dirt collecting tank in a manner of approaching and moving away from the filter screen, a driving member is provided at the connection between the brush and the dirt collecting tank, and the control component can control the connection of the driving member according to the water level in the box;

[0019] When the water level of the box reaches a threshold, the control component controls the brush to extend through the driving component and fit the brush against the radial inner wall of the filter;

[0020] When the water level of the box is lower than a threshold, the control component controls the brush to retract and separate from the radial inner wall of the filter screen through the driving member.

[0021] Preferably, the filter screens of adjacent layers are located on one side of the filter assembly in the axial direction to form a disassembly opening, and an inspection opening is provided on the side of the box body close to the disassembly opening.

[0022] Preferably, a sewage collecting trough is provided on the inner side of each layer of the filter screen. In the axial direction of the filter assembly, the length of the sewage collecting trough is not less than the length of the filter screen. One end of the sewage collecting trough located in the axial direction of the filter assembly is connected to a sewage pipe, and the sludge pump is provided on the sewage pipe.

[0023] Preferably, the water outlet is provided with a water flow detection component, the water outlet is provided with a turbidity detection component, and the water flow detection component and the turbidity detection component are electrically connected to the control component respectively;

[0024] When the flow rate value obtained by the water flow detection component is less than the preset flow rate, or the turbidity value obtained by the turbidity detection component is greater than the preset turbidity, the control component controls the driving component and the flushing nozzle to increase the operating frequency;

[0025] When the flow value obtained by the water flow detection component is greater than the preset flow, or the turbidity value obtained by the turbidity detection component is less than the preset turbidity, the control component controls the operating frequency of the driving component and the flushing nozzle to decrease.

[0026] Preferably, a sewage flow detection component is provided on the sewage pipe, and the sewage flow detection component is electrically connected to the control component;

[0027] When the flow rate value obtained by the sewage discharge flow detection component is less than the preset flow rate, the control component controls the operation frequency of the sludge pump and the flushing nozzle to increase;

[0028] When the flow value obtained by the sewage discharge flow detection component is greater than the preset flow, the control component controls the operating frequency of the sludge pump and the flushing nozzle to decrease.

[0029] Preferably, a water level detection component is provided in the box body, and the water level detection component is electrically connected to the control component. When the water level obtained by the water level detection component reaches a threshold value, the control component controls the flushing nozzle to start.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] This sewage filtration device uses multiple layers of filter screens with different mesh sizes. Each layer of filter screen can specifically intercept particles of different particle sizes, achieving graded filtration. Compared with traditional single-layer filter screens, it significantly improves the filtration accuracy of pollutants such as plankton, colloidal particles, and organic debris, ensuring that the effluent quality meets the standards. The flushing nozzle and brush work together to flush the particles on the filter screen. The flushed particles enter the sewage collection tank and are discharged through the sludge pump, greatly reducing the workload of manual maintenance and significantly lowering operation and maintenance costs.

[0032] Add control components. When abnormalities are detected in the water outlet flow and turbidity, the sewage discharge flow of the sump and the water level in the box, the flushing frequency of the flushing nozzle, the operating frequency of the sludge pump and the drive parts can be controlled through the control components to ensure that the device maintains high efficiency and low power consumption operation under different working conditions.

[0033] The present invention is further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is an exploded schematic diagram of the entire sewage filtration device according to the present invention;

[0035] Figure 2 This is a schematic diagram of a sewage filtration device according to the present invention from one viewing angle;

[0036] Figure 3 This is a schematic diagram of an integrated reinforcement frame in a sewage filtration device according to the present invention;

[0037] Figure 4 This is a schematic diagram of a filter assembly in a sewage filtration device according to the present invention;

[0038] Figure 5 This is a schematic diagram of the connection between the pulley and the integrated reinforcement frame in the sewage filtration device of the present invention;

[0039] Figure 6 The figure is a schematic diagram showing the connection relationship between the flushing nozzle, the filter assembly and the sewage collecting tank in the sewage filtering device described in the present invention. DETAILED DESCRIPTION

[0040] The following description is intended to fully illustrate the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are intended to be exemplary only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0041] See also Figure 1-6, the present invention provides a technical solution: a sewage filtering device, comprising a box body 100, wherein the box body 100 is provided with a water inlet 101 and a water outlet 102 communicating with the inside and outside;

[0042] A cylindrical filter assembly 200 is driven by a driving member 300 and is movably connected to the inner side of the housing 100 along its own circumferential direction. The filter assembly 200 is provided with multiple layers of filter screens 201 in the radial direction. The mesh size of the filter screens 201 increases from the inside to the outside of the filter assembly 200 along the radial direction of the filter assembly 200. The interior of the inner filter screen 201 is arranged opposite to the water inlet 101, and the water outlet 102 is located on the outside of the outer filter screen 201.

[0043] A flushing nozzle 400 and a sewage collecting trough 500, wherein the flushing nozzle 400 is arranged toward the radially outer side of the filter screen 201, and the sewage collecting trough 500 is located radially inwardly of the filter screen 201 and arranged relative to the flushing nozzle 400. The sewage collecting trough 500 is provided with a brush that matches the radial inner wall of the filter screen 201, and the brush is configured to brush the filter screen 201 during the movement of the filter assembly 200. The sewage collecting trough 500 is used to collect particulate matter on the filter screen 201 that is brushed off by the brush. The sewage collecting trough 500 is connected to a sludge pump 600;

[0044] The control component 700 is configured to obtain the water flow rate of the water outlet 102, the sewage discharge flow rate and turbidity of the sewage collection tank 500 and the water level in the box 100 and control the connection between the driving member 300, the sludge pump 600 and the flushing nozzle 400.

[0045] By providing multiple layers of filter screens 201 with different mesh sizes, each layer of filter screen 201 can specifically intercept particles of different particle sizes, achieving graded filtration. Compared with the traditional single-layer filter screen 201, the filtration accuracy of pollutants such as plankton, colloidal particles and organic debris is significantly improved, ensuring that the effluent water quality meets the standards. The flushing nozzle 400 and the brush can cooperate to flush the particles on the filter screen 201. The flushed particles enter the sump 500 and are discharged through the sludge pump 600, greatly reducing the manual maintenance workload and significantly lowering operation and maintenance costs.

[0046] A control component 700 is further added. When abnormalities are detected in the flow and turbidity of the water outlet 102, the sewage discharge flow of the sump 500 and the water level in the box 100, the flushing frequency of the flushing nozzle 400, the operating frequency of the sludge pump 600 and the driving component 300 can be controlled by the control component 700 to ensure that the device maintains high efficiency and low power consumption operation under different working conditions.

[0047] See also Figure 3 and 4To ensure the stability of the filter 201, the filter assembly 200 includes an integrated reinforcement frame 202, on which the filter 201 is mounted. The filter screens 201 of different mesh sizes are sequentially mounted on the integrated reinforcement frame 202 from inside to outside. The filter screen 201 is installed in a petal-type manner, and the filter screen 201 and the integrated reinforcement frame 202 are detachably connected. Specifically, the integrated reinforcement frame 202 includes side guards arranged on opposite sides of the axial direction of the filter assembly 200. The plate 2021 and the side ring 2022, as well as the reinforcing rod 2023 extending between the side baffle 2021 and the side ring 2022, the number of the reinforcing rod 2023 is multiple, and the reinforcing rod 2023 is arranged in sequence along the circumference of the filter component 200, the filter screen 201 includes sub-filter screens 2011 arranged in sequence along the circumference of the filter component 200, the filter screen 201 is covered on the outside of the integrated reinforcement frame 202, and the filter screen 201 is fixed to the integrated reinforcement frame 202 by screws on both sides and the outside.

[0048] In this embodiment, the filter screen 201 is provided with three layers. In other embodiments, filter screens 201 of different layers and different integrated reinforcement frames 202 can be combined according to needs. The mesh number of the multi-layer filter screen 201 gradually increases from the inside to the outside, and can filter particles of different particle sizes in the tail water in turn, effectively avoiding the problems of insufficient filtration and easy clogging of the filter screen 201. The integrated reinforcement frame 202 has a simple and durable structure and can be adapted to different scenarios. It can be assembled with different filter screens 201 to achieve a variety of filtering effects. The filter screen 201 is designed as a multi-petal structure, which is convenient for quick disassembly to replace damaged filter screens 201, greatly shortening the replacement time and improving the convenience of maintenance. The modular frame is compatible with filter screens 201 of multiple specifications and is suitable for complex water quality such as aquaculture tail water and industrial wastewater. The equipment has a compact structure and is convenient for system integration, and can be easily applied to the transformation and upgrading of new and old projects.

[0049] See also Figure 1 and 5 , showing the transmission method between the box body 100 and the filter assembly 200, the driving member 300 is an electric motor, the driving member 300 is installed in the box body 100, the output end of the motor is connected to the transmission rod, the outer side of the transmission rod is provided with a gear, the end of the integrated reinforcement frame 202 located in the axial direction of the filter assembly is provided with a gear ring, the gear and the gear ring are meshed;

[0050] The integrated reinforcement frame 202 is provided with a pulley groove on the inner side of the other end in the axial direction of the filter assembly, and a support frame 103 is installed on the inner side of the box body 100. A pulley 104 matching the pulley groove is installed on the support frame 103. The pulley 104 and the pulley groove are used to realize the positioning and fixation of the integrated reinforcement frame 202. In addition, a support roller frame 105 is also provided on the inner side of the box body 100. The support roller frame 105 is supported and connected to the outer side of the integrated reinforcement frame 202. The support roller frame 105 can provide guidance and support for the integrated reinforcement frame 202.

[0051] Furthermore, the pulleys 104 are provided in multiple groups, each group of the pulleys 104 corresponds one-to-one to each layer of the filter screen 201, the number of the pulleys 104 in each group is multiple, and the pulleys 104 in each group are arranged at intervals along the circumference of the integrated reinforcement frame 202.

[0052] See also Figure 1 and 2 The filter screens 201 of the adjacent layers are located on one side of the axial direction of the filter assembly 200 to form a disassembly and assembly port. The flushing nozzles 400 and the sewage collecting tank 500 can be placed between the filter screens 201 of the adjacent layers through the disassembly and assembly port. The box body 100 serves as the main component, and the other components are respectively installed inside the box body 100 or outside the box body 100. An inspection port 106 is provided on the side of the box body 100 close to the disassembly and assembly port. By opening the inspection port 106, the self-cleaning equipment composed of the flushing nozzle 400 and the sewage collecting tank 500 can be quickly inspected and replaced. Through modular design and structural assembly, maintenance operations such as filter screen clogging and replacement in the later stage are facilitated.

[0053] See also Figure 1 and 6, a self-cleaning component consisting of the flushing nozzle 400, the brush and the sewage collecting tank 500, a sewage collecting tank 500 is provided on the inner side of each layer of the filter 201, and in the axial direction of the filter component 200, the length of the sewage collecting tank 500 is not less than the length of the filter 201 to ensure that the sewage collecting tank 500 and the brush on the sewage collecting tank 500 can fully brush and collect the particulate matter inside the filter 201, and the sewage collecting tank 500 is connected to a sewage pipe 501 at one end in the axial direction of the filter component 200, and the sludge pump 600 is provided on the sewage pipe 501, wherein the sewage pipe 501 includes several branch pipes and a main pipe, the sewage collecting tank 500, the branch pipe and the main pipe are connected in sequence, wherein the branch pipe and the sewage collecting tank 500 correspond one to one, and the sludge pump 600 is installed on the main pipe. When in use, the brush can repeatedly scrub the filter 201 by virtue of the rotating characteristic of the filter 201 , and collect the brushed particles through the sewage collecting tank 500 and then discharge them through the sewage pipe 501 .

[0054] In this embodiment, the water outlet 102 is provided with a water flow detection component, the sewage pipe 501 is also provided with a blockage warning module, and the water outlet 102 is provided with a turbidity detection component. The water flow detection component and the turbidity detection component are electrically connected to the control component 700 respectively;

[0055] When the flow rate value obtained by the water flow detection component is less than the preset flow rate, or the turbidity value obtained by the turbidity detection component is greater than the preset turbidity, the control component 700 controls the operating frequency of the driving component 300 and the flushing nozzle 400 to increase;

[0056] When the flow rate value obtained by the water flow detection component is greater than the preset flow rate, or the turbidity value obtained by the turbidity detection component is less than the preset turbidity, the control component 700 controls the operating frequency of the driving component 300 and the flushing nozzle 400 to decrease.

[0057] By real-time monitoring of water quality indicators such as water flow rate, flow rate, turbidity, and pollutant concentration through the water outlet flow detection component and the turbidity detection component, the control component 700 automatically adjusts the rotation speed of the filter component 200 and the cleaning frequency of the filter screen 201 to ensure high efficiency and low consumption operation under different working conditions. Among them, when the drainage volume of the drain outlet after filtration is too low or the turbidity pollutant concentration is high, the rotation speed of the filter component 200 is automatically adjusted to increase the efficiency of the self-cleaning brush head in brushing the filter screen 201, and at the same time increase the flushing frequency of the flushing nozzle 400. The effect of autonomous control is achieved through multi-faceted linkage. Otherwise, the rotation speed and the flushing frequency of the backwash nozzle 400 are reduced to ensure high efficiency and low consumption operation under different working conditions.

[0058] The sewage pipe 501 is provided with a sewage flow detection component, and the sewage flow detection component is electrically connected to the control component 700;

[0059] When the flow rate value obtained by the sewage flow detection component is less than the preset flow rate, the control component 700 controls the sludge pump 600 and the flushing nozzle 400 to increase the operating frequency;

[0060] When the flow rate value obtained by the sewage discharge flow detection component is greater than the preset flow rate, the control component 700 controls the operating frequency of the sludge pump 600 and the flushing nozzle 400 to decrease.

[0061] The sewage flow detection part on the sewage pipe 501 can be used to monitor whether the sewage pipe 501 is blocked. If the flow is too small, it indicates that the sewage pipe 501 is blocked. At this time, the control component 700 can control the sludge pump 600 to start pressurization and work in conjunction with the flushing nozzle 400 to increase the extraction power of the sludge pipe, avoid blockage of the sewage pipe 501, and ensure that the sewage pipe 501 is unobstructed. The dual protection mechanism of self-cleaning and intelligent sewage discharge can effectively prevent the filter 201 from being blocked and the sewage pipe 501 from being silted, thereby extending the continuous operation time of the equipment and meeting high-intensity processing requirements.

[0062] The housing 100 is provided with a water level detector, which is electrically connected to the control unit 700. When the water level detected by the water level detector reaches a threshold, the control unit 700 controls the flushing nozzle 400 to activate. After the water level detector detects that the water level in the housing 100 has reached the threshold, the control unit 700 controls the flushing nozzle 400 to activate the filter 201. The flushing nozzle 400 uses high-pressure flushing combined with mechanical brush peeling to automatically clean the filter 201.

[0063] Furthermore, the brush is movably connected to the dirt collecting tank 500 in a manner of approaching and moving away from the filter screen 201. A driving member is provided at the connection between the brush and the dirt collecting tank 500. The control component 700 can control the connection of the driving member according to the water level in the box 100. Optionally, the driving member is a control motor or a driving cylinder.

[0064] When the water level of the box 100 reaches a threshold, the control component 700 controls the brush to extend and fit against the radial inner wall of the filter 201 through the driving component;

[0065] When the water level of the box 100 is lower than a threshold, the control component 700 controls the brush to retract and separate from the radial inner wall of the filter 201 through the driving member.

[0066] By arranging a driving member between the brush and the sewage collecting trough 500, when the filter 201 is blocked, that is, when the water level of the box 100 is detected to rise, the driving member controls the brush to extend and fit on the inner wall of the filter 201. When there is no blockage, the driving member controls the brush to retract, so as to increase the life of the brush and the filter 201. The brush and the flushing nozzle 400 operate synchronously, which can ensure the cleaning effect of the filter 201 under the premise of low power consumption.

[0067] The sewage filtration device adopts a multi-component collaborative automated operation mechanism, constructs a collaborative control algorithm for transmission, filtration, cleaning, sewage discharge and other components, realizes precise linkage of each component, ensures the full process automation and intelligent operation of the equipment, and drives the equipment to automatically adjust the operating parameters through multi-parameter sensors to achieve full process closed-loop control of drum speed, cleaning program, sewage discharge and dredging, reduce operation difficulty, and effectively improve management efficiency.

[0068] In this embodiment, the water level detection component is a liquid level sensor, and the turbidity detection component is a water quality monitoring sensor. Through automatic monitoring and control methods such as the liquid level sensor and the water quality monitoring sensor, when the water quality or liquid level does not exceed the set value, the brush and the flushing nozzle are not turned on. When the water quality or liquid level exceeds the set value, the flushing nozzle backwashing and the motor driving the brush are started respectively to achieve double-layer filter cleaning, reduce the number of filter cleaning times, improve the filter cleaning efficiency, increase the water treatment volume, and have the effect of energy saving and consumption reduction.

[0069] In this embodiment, an upper cover plate 107 is provided at the upper end of the box body 100, and the control component 700 is integrated in the upper cover plate 107, which can effectively prevent sewage splashing. The control component 700 can be linked with other components to realize automatic control of the flushing nozzle 400, the driving component 300 and the sludge pump 600.

[0070] In summary, the sewage filtration device achieves efficient removal of water pollutants through multi-layer filter 201 graded filtration and intelligent control system innovation, significantly improving treatment efficiency and reducing energy consumption. Among them, the self-cleaning and intelligent sewage discharge technology effectively extend the stable operation cycle of the device, reduce the failure rate and operation and maintenance costs, and the integrated framework design improves the versatility of components and can be adapted to treatment scenarios of different scales.

[0071] The application of this technology can effectively remove water pollution particles and provide technical methods for aquaculture effluent treatment. The efficient filtration performance effectively reduces the subsequent processing load, reduces production losses, extends equipment life, reduces resource waste, and achieves simultaneous improvement in economic and environmental benefits.

[0072] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. The scope of the patent application of the present invention cannot be limited by these embodiments alone. That is, any equivalent changes or modifications made according to the spirit disclosed by the present invention still fall within the patent scope of the present invention.

Claims

1. A sewage filtering device, characterized in that: include: A box body (100), wherein the box body (100) is provided with a water inlet (101) and a water outlet (102) communicating with the inside and outside; A cylindrical filter assembly (200) is driven by a driving member (300) and is movably connected to the inner side of the housing (100) along its own circumferential direction. The filter assembly (200) is provided with multiple layers of filter screens (201) in the radial direction. The mesh count of the filter screens (201) increases layer by layer from the inside to the outside along the radial direction of the filter assembly (200). The inside of the filter screen (201) located in the inner layer is arranged relative to the water inlet (101), and the water outlet (102) is located outside the filter screen (201) in the outer layer. A flushing nozzle (400) and a sewage collecting trough (500), wherein the flushing nozzle (400) is arranged toward the radial outer side of the filter screen (201), and the sewage collecting trough (500) is located on the radial inner side of the filter screen (201) and is arranged relative to the flushing nozzle (400). A brush matching the radial inner wall of the filter screen (201) is provided on the sewage collecting trough (500), and the brush is configured to be suitable for brushing the filter screen (201) during the activity of the filter assembly (200). The sewage collecting trough (500) is used to collect particulate matter on the filter screen (201) brushed off by the brush. A sludge pump (600) is connected to the sewage collecting trough (500); A control component (700) is configured to obtain the water flow rate of the water outlet (102), the sewage discharge flow rate and turbidity of the sewage sump (500), and the water level in the box (100), and to control the connection between the driving component (300), the sludge pump (600), and the flushing nozzle (400).

2. A sewage filtering device according to claim 1, characterized in that: The filter assembly (200) comprises an integrated reinforcement frame (202), the filter screen (201) is mounted on the integrated reinforcement frame (202), the filter screen (201) is installed in a petal-type manner, and the filter screen (201) and the integrated reinforcement frame (202) are detachably connected.

3. A sewage filtering device according to claim 2, characterized in that: The integrated reinforcement frame (202) comprises side baffles (2021) and side rings (2022) arranged on opposite sides of the filter assembly (200) in the axial direction, and reinforcing rods (2023) extending between the side baffles (2021) and the side rings (2022), wherein the number of the reinforcing rods (2023) is plural and the reinforcing rods (2023) are sequentially spaced along the circumference of the filter assembly (200); The filter screen (201) comprises sub-filter screens (2011) sequentially arranged along the circumference of the filter assembly (200); the filter screen (201) is covered on the outside of the integrated reinforcement frame (202); and the filter screen (201) is fixed to the integrated reinforcement frame (202) by screws on both sides and the outside.

4. A sewage filtering device according to claim 2, characterized in that: The driving member (300) and the pulley groove are respectively provided at both ends of the integrated reinforcement frame (202) in the axial direction of the filter assembly; a support frame (103) is installed on the inner side of the box body (100); and a pulley (104) matching the pulley groove is installed on the support frame (103); A supporting roller frame (105) is further provided on the inner side of the box body (100), and the supporting roller frame (105) is supported and connected to the outer side of the integrated reinforcement frame (202).

5. A sewage filtering device according to claim 1, characterized in that: The brush is movably connected to the dirt collecting tank (500) in a manner of approaching and moving away from the filter screen (201); a driving member is provided at the connection between the brush and the dirt collecting tank (500); and the control member (700) can control the connection of the driving member according to the water level in the box (100); When the water level of the box (100) reaches a threshold value, the control component (700) controls the brush to extend and fit against the radial inner wall of the filter (201) through the driving component; When the water level of the box (100) is lower than a threshold value, the control component (700) controls the brush to retract and separate from the radial inner wall of the filter (201) through the driving member.

6. A sewage filtering device according to claim 1, characterized in that: The filter screens (201) of the adjacent layers are located on one side of the filter assembly (200) in the axial direction to form a disassembly opening, and an inspection opening (106) is provided on the side of the box body (100) close to the disassembly opening.

7. A sewage filtering device according to claim 1, characterized in that: A sewage collecting trough (500) is provided on the inner side of each layer of the filter screen (201); in the axial direction of the filter assembly (200), the length of the sewage collecting trough (500) is not less than the length of the filter screen (201); one end of the sewage collecting trough (500) located in the axial direction of the filter assembly (200) is connected to a sewage pipe (501); and the sewage pipe (501) is provided with the sludge pump (600).

8. A sewage filtering device according to claim 1, characterized in that: The water outlet (102) is provided with a water flow detection component, and the water outlet (102) is provided with a turbidity detection component, and the water flow detection component and the turbidity detection component are respectively electrically connected to the control component (700); When the flow rate value obtained by the water flow detection component is less than a preset flow rate, or the turbidity value obtained by the turbidity detection component is greater than a preset turbidity, the control component (700) controls the driving component (300) and the flushing nozzle (400) to increase the operating frequency; When the flow value obtained by the water flow detection component is greater than a preset flow rate, or the turbidity value obtained by the turbidity detection component is less than a preset turbidity, the control component (700) controls the driving component (300) and the flushing nozzle (400) to reduce the operating frequency.

9. A sewage filtering device according to claim 7, characterized in that: The sewage pipe (501) is provided with a sewage flow detection component, and the sewage flow detection component is electrically connected to the control component (700); When the flow rate value obtained by the sewage discharge flow detection component is less than the preset flow rate, the control component (700) controls the sludge pump (600) and the flushing nozzle (400) to increase the operating frequency; When the flow value obtained by the sewage discharge flow detection component is greater than a preset flow, the control component (700) controls the operating frequency of the sludge pump (600) and the flushing nozzle (400) to decrease.

10. A sewage filtering device according to claim 1, characterized in that: A water level detection component is provided in the box (100), and the water level detection component is electrically connected to the control component (700). When the water level obtained by the water level detection component reaches a threshold, the control component (700) controls the flushing nozzle (400) to start.

Images