Urban rainwater and sewage diversion anti-backflow device

Abstract

The utility model discloses an urban rain and sewage diversion anti-backflow device, which comprises a water diversion component, a water diversion box, water diversion pipes and a water outlet pipe, and the water diversion pipes are communicated with the bottom of the water diversion box. The urban rain and sewage diversion anti-backflow device has the advantages that two groups of water diversion pipes are matched with a diversion part, a first motor drives a diversion turntable to rotate, and the water flow direction can be flexibly switched; rain sewage diversion is accurately achieved, meanwhile, sewage backflow is effectively prevented, the stability of an urban drainage system is guaranteed, impurities are intercepted by a filter cartridge, a second motor in a smashing part drives a smashing roller to rotate, large-particle impurities are smashed, pipeline blockage is avoided, the filtering effect is improved, and the service life of equipment is prolonged; the fixing plate and the fixing bolt are used for reinforcing, rain sewage leakage is prevented, normal operation of the device is guaranteed, impurities in the filter cartridge can be discharged in time through the arrangement of the blow-off pipe and the control valve, the filtering performance of the device is maintained, and the maintenance cost is reduced.

Description

A city rainwater and sewage separation and backflow prevention device Technical Field

[0001] This utility model relates to the field of rainwater and sewage separation technology, and in particular to an urban rainwater and sewage separation anti-backflow device. Background Technology

[0002] In the process of urbanization, urban drainage systems face increasingly severe challenges. Separation of rainwater and sewage and prevention of backflow have become critical issues that urgently need to be addressed. Traditional combined sewer systems have many drawbacks. The mixing of rainwater and sewage not only increases the burden on sewage treatment plants and reduces sewage treatment efficiency, but may also lead to sewage being directly discharged into rivers, causing water pollution. Therefore, an urban rainwater and sewage separation and backflow prevention device is needed to separate rainwater and sewage. At the same time, during heavy rain or even torrential rain, existing rainwater and sewage separation equipment is difficult to effectively cope with. When rainfall is excessive, the amount of debris in the rainwater and sewage can quickly clog the filtration devices, preventing them from being cleaned in time. The accumulated volume of rainwater and sewage upstream becomes too large, failing to fulfill the function of rainwater and sewage separation. Furthermore, urban drainage systems also face the risk of sewage backflow. When the external water level is higher than the drainage outlet, sewage may backflow into the urban drainage system, causing urban flooding and seriously impacting the urban environment and residents' lives. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems existing in the above and / or existing urban rainwater and sewage diversion and backflow prevention devices, this utility model is proposed.

[0005] Therefore, the problem that this utility model aims to solve is that in the existing technology, when the rainfall is too heavy, there are more pollutants in the rainwater and sewage, which can easily clog the filter device quickly, resulting in the filter device not being able to clean in time. The volume of rainwater and sewage accumulated upstream is too large, and it cannot play the function of separating rainwater and sewage.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a city rainwater and sewage diversion and backflow prevention device, which includes a water distribution component, including a water distribution tank, a water distribution pipe and an outlet pipe, wherein the water distribution pipe is connected to the bottom of the water distribution tank and two sets of water distribution pipes are provided, and the outlet pipe is connected to one end of the water distribution pipe; and a filter component, wherein the filter component is disposed inside the water distribution tank and includes an inlet pipe, a filter cylinder, a sewage discharge pipe, a control valve, a fixing frame and a protective shell, wherein the inlet pipe is connected to the top of the water distribution tank, the filter cylinder is disposed inside the water distribution tank and the top of the filter cylinder is connected to the bottom end of the inlet pipe, the sewage discharge pipe is connected to the bottom of the filter cylinder, the control valve is disposed on the outside of the sewage discharge pipe, the fixing frame is fixed to the inner wall of the inlet pipe, and the protective shell is fixed to the inner wall of the fixing frame.

[0007] As a preferred embodiment of the urban rainwater and sewage diversion and backflow prevention device of this utility model, the water diversion component further includes a diversion element, which includes a support frame and a first motor. The support frame is fixed to the inner wall of the water diversion tank, and the first motor is disposed on the inner wall of the support frame.

[0008] As a preferred embodiment of the urban rainwater and sewage diversion anti-backflow device of this utility model, the diversion component further includes a diversion turntable and a sealing ring. The diversion turntable is fixed to the output end of the first motor, and the sealing ring is disposed on the outer side of the diversion turntable, with the outer side of the sealing ring fitting into the inner wall of the water distribution tank.

[0009] As a preferred embodiment of the urban rainwater and sewage diversion and backflow prevention device of this utility model, the water diversion component further includes a movable component, which includes a cylinder and a movable plate. The cylinder is disposed inside the water diversion tank, and the movable plate is fixed to the piston rod of the cylinder.

[0010] As a preferred embodiment of the urban rainwater and sewage diversion anti-backflow device of this utility model, the movable component further includes a guide pipe and a connecting pipe. The guide pipe is disposed on the inner wall of the movable plate, and the connecting pipe is inserted into the inner wall of the guide pipe and connected to the bottom of the diversion turntable.

[0011] As a preferred embodiment of the urban rainwater and sewage diversion and backflow prevention device of this utility model, the filter assembly further includes a shredder, which includes a housing and a second motor. The housing is installed on the outside of the water inlet pipe, and the second motor is disposed inside the housing.

[0012] As a preferred embodiment of the urban rainwater and sewage diversion anti-backflow device of this utility model, the agitator further includes a rotating rod and a first bevel gear. The rotating rod is fixed to the output end of the second motor, and the end of the rotating rod away from the second motor penetrates the inner wall of the water inlet pipe and extends to the inner wall of the protective shell. The first bevel gear is fixed to one end of the rotating rod.

[0013] As a preferred embodiment of the urban rainwater and sewage diversion anti-backflow device of this utility model, the agitator further includes a second bevel gear and a agitator roller. The second bevel gear is meshed with the outer side of the first bevel gear, the agitator roller rotates on the inner wall of the fixed frame, and one end of the agitator roller is fixedly connected to the axis of the second bevel gear.

[0014] As a preferred embodiment of the urban rainwater and sewage diversion anti-backflow device of this utility model, the filter assembly further includes a sealing element, which includes a sealing cover, a groove and a sealing strip. The sealing cover is inserted into the inner wall of the water inlet pipe, the groove is formed in the inner wall of the water inlet pipe, and the sealing strip is disposed on the outer side of the sealing cover, and the outer side of the sealing strip fits into the inner wall of the groove.

[0015] As a preferred embodiment of the urban rainwater and sewage diversion anti-backflow device of this utility model, the sealing element further includes a fixing plate and a fixing bolt. The fixing plate is fixed to the outside of the water inlet pipe and the sealing cover respectively, and the fixing bolt is disposed on the inner wall of the fixing plate.

[0016] The beneficial effects of this utility model are as follows: the two-part water pipes cooperate with the diversion component, the first motor drives the diversion turntable to rotate, which can flexibly switch the water flow direction and accurately realize the separation of rainwater and sewage. At the same time, it effectively prevents sewage backflow and ensures the stability of the urban drainage system. The filter cartridge intercepts impurities, and the second motor in the crushing component drives the crushing roller to rotate, crushing large particles of impurities, avoiding pipe blockage, improving the filtration effect, and extending the service life of the equipment. The sealing cover and the water inlet pipe fit together through the sealing strip and groove, and are then reinforced by the fixing plate and fixing bolts to prevent rainwater and sewage leakage and ensure the normal operation of the device. The setting of the sewage pipe and control valve can discharge impurities in the filter cartridge in time, maintain the filtration performance of the device, and reduce maintenance costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 shows the overall structure of the urban rainwater and sewage diversion and backflow prevention device.

[0019] Figure 2 shows the structure of the water distribution tank of the urban rainwater and sewage diversion and backflow prevention device.

[0020] Figure 3 is a structural diagram of the diversion component of the urban rainwater and sewage diversion and backflow prevention device.

[0021] Figure 4 shows the structure of the sealing component of the urban rainwater and sewage diversion anti-backflow device.

[0022] Figure 5 shows the structure of the agitator component of the urban stormwater and sewage diversion and backflow prevention device.

[0023] The diagram labels are as follows: 100, water distribution assembly; 110, water distribution tank; 120, water distribution pipe; 130, water outlet pipe; 140, flow divider; 141, support frame; 142, first motor; 143, flow divider turntable; 144, sealing ring; 150, moving part; 151, cylinder; 152, movable plate; 153, guide pipe; 154, connecting pipe; 200, filter assembly; 210, water inlet pipe; 220, filter cartridge. ; 230, Sewage pipe; 240, Control valve body; 250, Grinding component; 251, Outer shell; 252, Second motor; 253, Rotating rod; 254, First bevel gear; 255, Second bevel gear; 256, Grinding roller; 260, Seal; 261, Sealing cover; 262, Groove; 263, Sealing strip; 264, Fixing plate; 265, Fixing bolt; 270, Fixing frame; 280, Protective shell. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0027] Example 1

[0028] Referring to Figures 1 to 5, this is the first embodiment of the present invention. This embodiment provides an urban rainwater and sewage diversion and backflow prevention device, including a water diversion component 100 and a filter component 200. By setting the water diversion component 100, the water flow direction can be flexibly switched to accurately realize rainwater and sewage diversion. By setting the filter component 200, large particles of impurities can be easily crushed to avoid clogging the pipes and improve the filtration effect.

[0029] The water distribution assembly 100 includes a water distribution tank 110, a water distribution pipe 120, and a water outlet pipe 130. The water distribution pipe 120 is connected to the bottom of the water distribution tank 110, and two sets of water distribution pipes 120 are provided. The water outlet pipe 130 is connected to one end of the water distribution pipe 120.

[0030] The water distribution tank 110 serves as the main container of the entire water distribution assembly 100, providing installation space for components such as the water distribution pipe 120, the outlet pipe 130, the diversion component 140, and the moving component 150. It realizes the collection and diversion functions of rainwater and sewage. The water distribution pipe 120 is connected to the bottom of the water distribution tank 110, and there are two sets of them. They are used to guide the rainwater and sewage in the water distribution tank 110 to different subsequent treatment paths to realize the initial diversion function. The outlet pipe 130 is connected to one end of the water distribution pipe 120 and discharges the diverted rainwater and sewage from the water distribution assembly 100 to the subsequent sewage treatment system or discharge outlet.

[0031] The filter assembly 200 is disposed inside the water distribution tank 110 and includes an inlet pipe 210, a filter cartridge 220, a drain pipe 230, a control valve body 240, a mounting bracket 270, and a protective shell 280. The inlet pipe 210 is connected to the top of the water distribution tank 110. The filter cartridge 220 is disposed inside the water distribution tank 110, and the top of the filter cartridge 220 is connected to the bottom of the inlet pipe 210. The drain pipe 230 is connected to the bottom of the filter cartridge 220. The control valve body 240 is disposed on the outside of the drain pipe 230. The mounting bracket 270 is fixed to the inner wall of the inlet pipe 210, and the protective shell 280 is fixed to the inner wall of the mounting bracket 270.

[0032] The inlet pipe 210 is connected to the top of the distribution tank 110, serving as a channel for rainwater and sewage to enter the filter assembly 200. It introduces external rainwater and sewage into the distribution tank 110 for filtration. The filter cartridge 220 is located inside the distribution tank 110, with its top connected to the bottom of the inlet pipe 210. It filters the rainwater and sewage entering the distribution tank 110, intercepting impurities and preventing them from entering the subsequent diversion and treatment system, ensuring proper treatment of rainwater and sewage. The drain pipe 230 is connected to the bottom of the filter cartridge 220, used to remove impurities and sewage intercepted inside the filter cartridge 220, maintaining the filter cartridge's integrity. The filtration performance of filter cartridge 220 is controlled by valve body 240 located outside drain pipe 230, which controls the opening and closing of drain pipe 230 to discharge impurities and sewage from filter cartridge 220 as needed. Fixing frame 270 is fixed to the inner wall of water distribution tank 110 to provide support and fixation for protective shell 280 and pulverizing roller 256, ensuring normal operation of pulverizing component 250. Protective shell 280 is fixed to the inner wall of fixing frame 270 to provide protection and prevent impurities in rainwater and sewage from entering the transmission part of pulverizing component 250, ensuring normal operation of pulverizing component 250 and extending its service life.

[0033] Example 2

[0034] Referring to Figure 3, this is the second embodiment of the present invention, which is based on the previous embodiment.

[0035] Specifically, the water distribution assembly 100 also includes a diversion component 140, which includes a support frame 141 and a first motor 142. The support frame 141 is fixed to the inner wall of the water distribution tank 110, and the first motor 142 is disposed on the inner wall of the support frame 141.

[0036] The support frame 141 is fixed to the inner wall of the water distribution tank 110 to provide support for the first motor 142 and ensure that the first motor 142 is installed stably. The first motor 142 is set on the inner wall of the support frame 141 as a power source to drive the diversion turntable 143 to rotate, thereby realizing the control of the flow direction of rainwater and sewage.

[0037] Specifically, the diversion component 140 also includes a diversion turntable 143 and a sealing ring 144. The diversion turntable 143 is fixed to the output end of the first motor 142, and the sealing ring 144 is disposed on the outer side of the diversion turntable 143, and the outer side of the sealing ring 144 fits into the inner wall of the water distribution tank 110.

[0038] The diversion turntable 143 is fixed to the output end of the first motor 142. By rotating, it changes the flow direction of rainwater and sewage in the water distribution tank 110, so that they can accurately enter different water distribution pipes 120. The sealing ring 144 is set on the outside of the diversion turntable 143 and fits into the inner wall of the water distribution tank 110 to play a sealing role, preventing rainwater and sewage from leaking between the diversion turntable 143 and the inner wall of the water distribution tank 110, thus ensuring the diversion effect.

[0039] Specifically, the water distribution assembly 100 also includes a movable component 150, which includes a cylinder 151 and a movable plate 152. The cylinder 151 is located inside the water distribution tank 110, and the movable plate 152 is fixed to the piston rod of the cylinder 151.

[0040] Cylinder 151 is located inside water distribution tank 110 and serves as a power component, driving movable plate 152 to move up and down. Movable plate 152 is fixed to piston rod of cylinder 151 and moves up and down under the action of cylinder 151, driving guide pipe 153 to move, realizing connection and disconnection with flow distribution turntable 143. It should be noted that cylinder 151 is composed of air compressor, air tank, filter pressure reducing valve, directional control valve and flow control valve. In use, air compressor compresses ambient air to a set pressure and stores it in air tank. Filter pressure reducing valve further purifies the air and stabilizes the pressure, and delivers it to control valve through air pipe. Directional control valve switches airflow channel according to electrical signal to determine the extension and retraction direction of cylinder 151. Flow control valve adjusts airflow speed to control the movement speed of cylinder 151. Compressed air enters rodless chamber or rodless chamber of cylinder 151, pushing piston to move. Piston drives piston rod to output linear reciprocating motion.

[0041] Specifically, the movable component 150 also includes a guide pipe 153 and a connecting pipe 154. The guide pipe 153 is disposed on the inner wall of the movable plate 152, and the connecting pipe 154 is inserted into the inner wall of the guide pipe 153 and is connected to the bottom of the diversion turntable 143.

[0042] The guide pipe 153 is installed on the inner wall of the movable plate 152 to guide rainwater and sewage into the connecting pipe 154. The connecting pipe 154 is inserted into the inner wall of the guide pipe 153 and connected to the bottom of the diversion turntable 143, so as to transport the rainwater and sewage in the guide pipe 153 to the diversion turntable 143, thereby realizing the diversion of rainwater and sewage.

[0043] Example 3

[0044] Referring to Figures 4 and 5, this is the third embodiment of the present invention, which is based on the first two embodiments.

[0045] Specifically, the filter assembly 200 also includes a shredder 250, which includes a housing 251 and a second motor 252. The housing 251 is installed on the outside of the water inlet pipe 210, and the second motor 252 is located inside the housing 251.

[0046] The outer casing 251 is installed on the outside of the water inlet pipe 210 to provide installation space for the second motor 252 and also to provide protection. The second motor 252 is located inside the outer casing 251 and serves as a power source to drive the rotating rod 253 to rotate.

[0047] Specifically, the shredder 250 also includes a rotating rod 253 and a first bevel gear 254. The rotating rod 253 is fixed to the output end of the second motor 252, and the end of the rotating rod 253 away from the second motor 252 passes through the inner wall of the water inlet pipe 210 and extends to the inner wall of the protective shell 280. The first bevel gear 254 is fixed to one end of the rotating rod 253.

[0048] The rotating rod 253 is fixed to the output end of the second motor 252. The end away from the second motor 252 passes through the inner wall of the water inlet pipe 210 and extends to the inner wall of the protective shell 280, transmitting the power of the second motor 252 to the first bevel gear 254. The first bevel gear 254 is fixed to one end of the rotating rod 253, and transmits the power to the crushing roller 256 through meshing with the second bevel gear 255.

[0049] Specifically, the shredder 250 also includes a second bevel gear 255 and a shredder roller 256. The second bevel gear 255 is meshed with the outer side of the first bevel gear 254, and the shredder roller 256 rotates on the inner wall of the fixed frame 270. One end of the shredder roller 256 is fixedly connected to the axis of the second bevel gear 255.

[0050] The second bevel gear 255 is meshed with the outside of the first bevel gear 254, transmitting the power of the first bevel gear 254 to the agitator roller 256, thus achieving the direction transmission of power. The agitator roller 256 rotates on the inner wall of the fixed frame 270, with one end fixedly connected to the shaft of the second bevel gear 255. Driven by the power, it rotates to agitate larger impurities in the rainwater and sewage entering the inlet pipe 210, preventing impurities from clogging the filter cartridge 220 and subsequent pipes.

[0051] Specifically, the filter assembly 200 also includes a seal 260, which includes a sealing cap 261, a groove 262, and a sealing strip 263. The sealing cap 261 is inserted into the inner wall of the water inlet pipe 210, the groove 262 is formed in the inner wall of the water inlet pipe 210, and the sealing strip 263 is disposed on the outer side of the sealing cap 261, and the outer side of the sealing strip 263 fits into the inner wall of the groove 262.

[0052] The sealing cap 261 is inserted into the inner wall of the water inlet pipe 210 to seal the water inlet pipe 210 and prevent rainwater and sewage leakage. The groove 262 is opened in the inner wall of the water inlet pipe 210 and cooperates with the sealing strip 263 to achieve a seal between the sealing cap 261 and the water inlet pipe 210. The sealing strip 263 is set on the outside of the sealing cap 261 and fits into the inner wall of the groove 262 to enhance the sealing performance between the sealing cap 261 and the water inlet pipe 210 and prevent rainwater and sewage leakage.

[0053] Specifically, the sealing element 260 also includes a fixing plate 264 and a fixing bolt 265. The fixing plate 264 is fixed to the outside of the water inlet pipe 210 and the sealing cover 261 respectively, and the fixing bolt 265 is disposed on the inner wall of the fixing plate 264.

[0054] The fixing plate 264 is fixed to the outside of the water inlet pipe 210 and the sealing cover 261 respectively, providing an installation position for the fixing bolt 265. The fixing bolt 265 is set on the inner wall of the fixing plate 264 to fix the sealing cover 261, ensuring a stable connection between the sealing cover 261 and the water inlet pipe 210 and ensuring a sealing effect.

[0055] When separating urban stormwater and sewage, the stormwater and sewage first enter the device through the inlet pipe 210. At this point, the stormwater and sewage are processed by the agitator 250. The second motor 252 is installed inside the outer casing 251, which is fixed to the outside of the inlet pipe 210, protecting the second motor 252. When the second motor 252 starts, its output end drives the rotating rod 253 to rotate. The first bevel gear 254 at one end of the rotating rod 253 rotates accordingly. Since the first bevel gear 254 meshes with the second bevel gear 255, the second bevel gear 255 begins to rotate. The agitator roller 256 is rotatably mounted on the inner wall of the fixed frame 270, and one end of it is fixedly connected to the shaft of the second bevel gear 255. Therefore, the second bevel gear 255 drives the agitator roller 256 to rotate. The agitator roller 256 agitates large particles of impurities, such as leaves and plastic bags, entering the inlet pipe 210, preventing these particles from clogging the subsequent filter cartridge 220 and pipes, thus ensuring the smooth flow of rainwater and sewage. The agitated rainwater and sewage flow into the filter cartridge 220, which filters the rainwater and sewage, intercepting fine impurities. As filtration progresses, a certain amount of impurities accumulates inside the filter cartridge 220. When it is necessary to clean the impurities, the operator opens the control valve body 240 outside the drain pipe 230, and the impurities and sewage accumulated inside the filter cartridge 220 are discharged through the drain pipe 230, thereby ensuring the filtration effect of the filter cartridge 220. Simultaneously, the seal 260 prevents rainwater and sewage leakage, and the sealing cover 261 is inserted... A sealing strip 263 is attached to the inner wall of the inlet pipe 210, and its outer side fits into the groove 262 on the inner wall of the inlet pipe 210 to form a good seal. A fixing plate 264 is fixed to the outer side of the inlet pipe 210 and the sealing cover 261 respectively, and the two are fixedly connected by fixing bolts 265, which further enhances the sealing effect and ensures that there will be no leakage of rainwater and sewage during the operation of the device. At the same time, the internal structure of the agitator 250 can be repaired by opening the sealing cover 261. After the filtered rainwater and sewage enter the water distribution tank 110, they are divided by the cooperation of the diversion component 140 and the moving component 150. The first motor 142 is mounted on the support frame 141, which is fixed to the inner wall of the water distribution tank 110. Providing stable support, after the first motor 142 starts, its output end drives the diversion turntable 143 to rotate. The sealing ring 144 on the outer side of the diversion turntable 143 fits into the inner wall of the water distribution tank 110, effectively preventing rainwater and sewage from leaking between the diversion turntable 143 and the inner wall of the water distribution tank 110. The cylinder 151 is located inside the water distribution tank 110, and its piston rod is fixedly connected to the movable plate 152. When it is necessary to change the flow direction of rainwater and sewage, the piston rod of the cylinder 151 extends and retracts, driving the movable plate 152 to move up and down. The guide pipe 153 on the inner wall of the movable plate 152 moves accordingly. When the guide pipe 153 moves to the appropriate position and is inserted into the connecting pipe 154 at the bottom of the diversion turntable 143, rainwater and sewage enter the diversion turntable 143 through the guide pipe 153 and the connecting pipe 154.The diversion turntable 143 rotates according to actual needs, guiding rainwater and sewage to different distribution pipes 120, and finally discharging them through the outlet pipe 130. This achieves the functions of rainwater and sewage diversion and backflow prevention, ensuring that rainwater and sewage can accurately and efficiently enter the corresponding treatment system.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A city stormwater and sewage diversion and backflow prevention device, characterized in that: The system includes a water distribution assembly (100), comprising a water distribution tank (110), a water distribution pipe (120), and an outlet pipe (130), wherein the water distribution pipe (120) is connected to the bottom of the water distribution tank (110), and two sets of water distribution pipes (120) are provided, and the outlet pipe (130) is connected to one end of the water distribution pipe (120); and a filter assembly (200), wherein the filter assembly (200) is disposed inside the water distribution tank (110), comprising an inlet pipe (210), a filter cartridge (220), a drain pipe (230), a control valve body (240), and a mounting bracket (270). The water inlet pipe (210) is connected to the top of the water distribution tank (110), the filter cylinder (220) is located inside the water distribution tank (110), and the top of the filter cylinder (220) is connected to the bottom of the water inlet pipe (210). The drain pipe (230) is connected to the bottom of the filter cylinder (220). The control valve body (240) is located outside the drain pipe (230). The fixing bracket (270) is fixed to the inner wall of the water inlet pipe (210), and the protective shell (280) is fixed to the inner wall of the fixing bracket (270).

2. The urban rainwater and sewage diversion and backflow prevention device as described in claim 1, characterized in that: The water distribution assembly (100) further includes a diversion component (140), which includes a support frame (141) and a first motor (142). The support frame (141) is fixed to the inner wall of the water distribution tank (110), and the first motor (142) is disposed on the inner wall of the support frame (141).

3. The urban rainwater and sewage diversion and backflow prevention device as described in claim 2, characterized in that: The diversion component (140) also includes a diversion turntable (143) and a sealing ring (144). The diversion turntable (143) is fixed to the output end of the first motor (142). The sealing ring (144) is disposed on the outside of the diversion turntable (143), and the outside of the sealing ring (144) fits into the inner wall of the water distribution tank (110).

4. The urban rainwater and sewage diversion and backflow prevention device as described in claim 1, characterized in that: The water distribution assembly (100) also includes a movable component (150), which includes a cylinder (151) and a movable plate (152). The cylinder (151) is disposed inside the water distribution tank (110), and the movable plate (152) is fixed to the piston rod of the cylinder (151).

5. The urban rainwater and sewage diversion and backflow prevention device as described in claim 4, characterized in that: The movable component (150) further includes a guide pipe (153) and a connecting pipe (154). The guide pipe (153) is disposed on the inner wall of the movable plate (152), and the connecting pipe (154) is inserted into the inner wall of the guide pipe (153) and is connected to the bottom of the diversion turntable (143).

6. The urban stormwater and sewage diversion and backflow prevention device as described in claim 1, characterized in that: The filter assembly (200) further includes a shredder (250), which includes a housing (251) and a second motor (252). The housing (251) is installed on the outside of the water inlet pipe (210), and the second motor (252) is disposed inside the housing (251).

7. The urban rainwater and sewage diversion and backflow prevention device as described in claim 6, characterized in that: The agitator (250) further includes a rotating rod (253) and a first bevel gear (254). The rotating rod (253) is fixed to the output end of the second motor (252), and the end of the rotating rod (253) away from the second motor (252) passes through the inner wall of the water inlet pipe (210) and extends to the inner wall of the protective shell (280). The first bevel gear (254) is fixed to one end of the rotating rod (253).

8. The urban rainwater and sewage diversion and backflow prevention device as described in claim 7, characterized in that: The shredding component (250) further includes a second bevel gear (255) and a shredding roller (256). The second bevel gear (255) is meshed with the outer side of the first bevel gear (254). The shredding roller (256) rotates on the inner wall of the fixed frame (270), and one end of the shredding roller (256) is fixedly connected to the axis of the second bevel gear (255).

9. The urban rainwater and sewage diversion and backflow prevention device as described in claim 1, characterized in that: The filter assembly (200) further includes a sealing element (260), which includes a sealing cap (261), a groove (262), and a sealing strip (263). The sealing cap (261) is inserted into the inner wall of the water inlet pipe (210), the groove (262) is formed in the inner wall of the water inlet pipe (210), and the sealing strip (263) is disposed on the outer side of the sealing cap (261), and the outer side of the sealing strip (263) fits into the inner wall of the groove (262).

10. The urban stormwater and sewage diversion and backflow prevention device as described in claim 9, characterized in that: The sealing element (260) also includes a fixing plate (264) and a fixing bolt (265). The fixing plate (264) is fixed to the outside of the water inlet pipe (210) and the sealing cover (261), respectively, and the fixing bolt (265) is disposed on the inner wall of the fixing plate (264).

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