A sponge city rainwater harvesting and reuse device

Abstract

This invention relates to the field of rainwater harvesting and treatment technology, and discloses a rainwater harvesting and reuse device for sponge cities, including a filter tank. A water-separating plate is fixedly connected to the inner wall of the filter tank, and a bottom inclined plate is fixedly connected to the bottom of the inner wall of the filter tank. A grid plate is fixedly connected to the outer wall of the water-separating plate, and the outer wall of the grid plate is fixedly connected to the inner wall of the filter tank. Due to the setting of the water-separating plate, the rainwater accumulated at one end of the filter cotton is relatively calm, and there is no other force or reason to cause shaking inside. The part of the silt that does not settle naturally will be intercepted at the bottom of the filter cotton. When the rainwater reaches the drain outlet and flows into the mixing tank, the flow force generated when the horizontal plane reaches the drain outlet is a natural flow. The bottom of the rainwater is not affected by this force, and the silt is not affected by suction and flows upward with the water flow through the filter cotton, causing the inside or outer surface of the filter cotton to be filled with silt, resulting in blockage and difficulty in cleaning, which affects the efficiency of rainwater harvesting of the equipment.

Description

Technical Field

[0001] This invention relates to the field of rainwater harvesting and treatment equipment technology, specifically to a rainwater harvesting and reuse equipment for sponge cities. Background Technology

[0002] A sponge city is a city that can absorb water like a sponge, retaining rainwater to the greatest extent possible. It involves setting up water-absorbing materials and rainwater collection and treatment facilities in appropriate areas of the city to store water during heavy rains and collect and treat the rainwater for recycling and reuse.

[0003] Although rainwater is filtered and collected to separate large impurities, it still carries some silt. This silt is filtered out in the rainwater collector, but due to the excessive rainfall during the rainy season, the filtered silt can clog the pipes and equipment after prolonged operation if not cleaned in time, causing the equipment to malfunction. Usually, people need to go to clean it during heavy rain, which not only affects rainwater collection but also increases labor costs. To avoid the above problems, the following solution is proposed, specifically a rainwater harvesting and reuse device for sponge cities. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a rainwater harvesting and reuse device for sponge cities, comprising a tank structure, which further includes a filter tank.

[0005] The tank structure has an internal storage space for storing the collected rainwater;

[0006] The filtration mechanism is equipped with a filter to filter out visible impurities and silt from rainwater.

[0007] The sedimentation mechanism is equipped with sedimentation plates to prevent water flow from directly impacting the sedimentation tank.

[0008] A water baffle plate is fixedly connected to the inner wall of the filter tank, and a bottom inclined plate is fixedly connected to the bottom of the inner wall of the filter tank. A grid plate is fixedly connected to the outer wall of the water baffle plate, and the outer wall of the grid plate is fixedly connected to the inner wall of the filter tank.

[0009] Preferably, the tank structure includes:

[0010] Tank assembly, which is fixedly connected to the outer wall of the tank structure, is used to store the collected rainwater;

[0011] The inlet assembly is fixedly connected to the top of the tank assembly and is used to connect external pipes to guide the collected rainwater into the tank assembly.

[0012] Preferably, the filtration mechanism includes:

[0013] The filter assembly is fixedly connected to the inner wall of the tank assembly and is used to filter larger impurities, such as leaves and weeds.

[0014] Replacement component: The replacement component is fixedly connected to the outer wall of the tank assembly and is used to open and close the filter tank, making it convenient to replace the filter components.

[0015] Preferably, the precipitation mechanism includes:

[0016] Bottom component, which is fixedly connected to the inner wall of the tank component, is used to guide the accumulation of precipitated impurities;

[0017] The sponge filter assembly is fixedly connected to the inner wall of the tank assembly to prevent impurities and sediments from floating to the surface.

[0018] Preferably, the tank assembly includes a drain outlet on the outer wall of the filter tank, a drain outlet on the outer wall of the filter tank, a connecting pipe fixedly connected to the outer wall of the drain outlet, and a mixing tank fixedly connected to the end of the connecting pipe away from the drain outlet.

[0019] Preferably, the inlet component includes a water inlet located at the top of the filter tank, and an observation mirror is fixedly connected to the top of the filter tank.

[0020] Preferably, the filter assembly includes a cartilage frame that is attached to the surface of the grating plate. The inner wall of the cartilage frame is fixedly connected to a filter mesh, and the outer wall of the cartilage frame is fixedly connected to a cartilage handle. When rainwater enters the equipment through the inlet, it will fall onto the filter mechanism, which will filter out large particles or impurities such as leaves. When the transported rainwater impacts the grating plate, the grating plate will offset all the impact force, allowing the rainwater to pass through the filter mesh and the grating plate into the lower end of the equipment. Since the filter mechanism filters impurities while resisting the impact force of the water flow, the rainwater drips to the bottom through the filter mechanism, avoiding direct impact on the rainwater accumulated at the bottom. This prevents the accumulated rainwater from becoming turbid during the sedimentation process and failing to settle under the impact of the water flow at the top.

[0021] Preferably, the replacement component includes a mounting port fixed to the surface of the filter tank, and the outer wall of the mounting port is provided with a sealing door.

[0022] Preferably, the bottom assembly includes a bottom inclined plate fixedly connected to the bottom of the inner wall of the filter tank, and a high inclined plate fixedly connected to the outer wall of the bottom inclined plate. A suction port is provided at the connection between the high inclined plate and the bottom inclined plate. Utilizing the aforementioned sedimentation characteristics, when rainwater is transported into the equipment through the inlet, it will settle at the bottom of the filter tank during the accumulation process. Due to the suction port, as the height of the rainwater accumulated inside the filter tank increases, the pressure exerted on the bottom also increases. When the rainwater accumulates to a certain level, the internal pressure drop is relatively high, and the suction port connects to the discharge port. The suction port generates a strong suction force due to pressure, causing the rainwater accumulated inside the filter tank to flow from the suction port to the discharge port. Because the suction port is small, it increases the flow velocity in the vicinity and generates a strong suction force. However, because the suction port is small, the suction force generated is limited and cannot change the internal operation of the filter tank. The suction force generated by the suction port will draw away the silt that originally settled at the bottom of the filter tank, preventing excessive silt from settling inside the filter tank and exceeding the gap reserved at the bottom of the baffle plate, which would prevent the accumulated rainwater from flowing normally through the gap reserved at the bottom of the baffle plate.

[0023] Preferably, the sponge filter assembly includes a mounting bracket fixedly connected to the inner wall of the filter tank. The outer wall of the mounting bracket is fixedly connected to the outer wall of the baffle plate. Filter cotton is fixedly connected to the top of the mounting bracket. To address the problem of sediment clogging, when rainwater enters the filter tank, it accumulates inside. During this accumulation process, sediment settles at the bottom due to its own weight. Simultaneously, as rainwater continues to accumulate inside the filter tank, the water level rises continuously. When the accumulated water level exceeds the filter cotton, due to the baffle plate, the rainwater accumulated at one end of the filter cotton remains relatively calm, without any internal movement or other cause. Sediment that does not settle naturally is intercepted at the bottom of the filter cotton. When the rainwater reaches the drain outlet, it flows into the mixing tank. The current flow is natural, and the bottom of the rainwater is not affected by this force. Sediment is not affected by suction and flows upwards with the water through the filter cotton, causing the filter cotton to become clogged and difficult to clean, affecting the efficiency of the rainwater harvesting equipment. To address this, the equipment's filter tank is equipped with a bottom inclined plate, and a high inclined plate is fixedly connected to the top of the bottom inclined plate. The high inclined plate is located on the side furthest from the filter cotton, referred to as the right side of the equipment, with the filter cotton end on the left side. Sediment settles on the outer surfaces of the bottom and high inclined plates, preventing long-term sedimentation from causing some sediment to accumulate and be unable to be discharged through the suction port. The bottom and high inclined plates effectively prevent sediment from accumulating into clumps.

[0024] The present invention has the following beneficial effects:

[0025] (1) This invention addresses the problem of silt blockage. When rainwater enters the filter tank, it accumulates inside. During the accumulation process, silt settles at the bottom due to its own weight. As rainwater continues to accumulate inside the filter tank, the water level rises continuously. When the accumulated water level exceeds the filter cotton, the rainwater accumulated at one end of the filter cotton remains relatively calm due to the baffle plate. There is no other force or reason for the internal shaking. The silt that does not settle naturally is intercepted at the bottom of the filter cotton. When the rainwater reaches the drain outlet and flows into the mixing tank, the flow force generated when the water level reaches the drain outlet is a natural flow. The bottom of the rainwater is not affected by this force, and the silt is not affected by suction and flows upward with the water flow through the filter cotton, causing the filter cotton to be filled with silt inside or on the outer surface, resulting in blockage that is difficult to clean and affecting the efficiency of rainwater recovery in the equipment.

[0026] (2) This invention utilizes the above-mentioned characteristics of sedimentation. When rainwater is transported into the equipment through the inlet, it will settle at the bottom of the filter tank during the accumulation process. With the setting of the suction port, the rainwater accumulated inside the filter tank will continuously increase in height and pressure on the bottom. When the rainwater accumulates to a certain level, the internal pressure drop is high. The suction port and the discharge port are connected, and a large suction force will be generated due to the pressure relationship. This will cause the rainwater accumulated inside the filter tank to flow to the discharge port through the suction port. Since the suction port is set to be small, it will accelerate the flow velocity in the vicinity and the suction force will be strong. However, since the suction port is set to be small, the suction force generated is limited and cannot change the operation mode inside the filter tank. The suction force generated by the suction port will cause the sediment that originally settled at the bottom of the filter tank to be sucked away through the suction port, avoiding excessive sedimentation inside the filter tank, which exceeds the gap reserved at the bottom of the baffle plate, causing the accumulated rainwater to be unable to flow normally through the gap reserved at the bottom of the baffle plate.

[0027] (3) The present invention utilizes the above-mentioned process of rainwater accumulation and sedimentation. The bottom of the filter tank of the equipment is provided with a bottom inclined plate, and the top of the bottom inclined plate is fixedly connected to a high inclined plate. The high inclined plate is located on the side away from the filter cotton, which is called the right side of the equipment. One end of the filter cotton is the left side. The mud and sand will settle on the outer surface of the bottom inclined plate and the high inclined plate, avoiding the accumulation of mud and sand that cannot be discharged from the suction port due to long-term sedimentation. The equipment with the bottom inclined plate and the high inclined plate can effectively prevent mud and sand from accumulating into lumps.

[0028] (4) When rainwater enters the equipment through the inlet, it will fall onto the filter mechanism. The filter mechanism will filter out large particles or impurities such as leaves. When the transported rainwater impacts the grid plate, the grid plate will offset all the impact force, allowing the rainwater to pass through the filter mesh and the grid plate into the lower end of the equipment. Since the filter mechanism filters impurities while resisting the impact force of the water flow, the rainwater drips to the bottom through the filter mechanism, avoiding direct impact on the rainwater accumulated at the bottom. This prevents the accumulated rainwater from becoming turbid during the sedimentation process and failing to settle under the impact of the water flow at the top. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic cross-sectional view of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the filtration mechanism of the present invention;

[0034] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0035] Figure 6 This is a schematic diagram of the bottom component of the present invention;

[0036] Figure 7 This is a schematic diagram of the tank assembly of the present invention;

[0037] Figure 8 This is a schematic diagram of the bottom of the device of the present invention;

[0038] Figure 9 For the present invention Figure 8 Enlarged diagram of point B in the middle.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] In the diagram: 1. Tank structure; 11. Tank assembly; 12. Inlet assembly; 111. Filter tank; 112. Sewage outlet; 113. Drain outlet; 114. Mixing tank; 115. Connecting pipe; 121. Water inlet; 122. Observation mirror; 123. Water baffle; 2. Filter mechanism; 21. Filter assembly; 22. Replacement assembly; 211. Grating plate; 212. Cartilage frame; 213. Cartilage handle; 214. Filter mesh cotton; 221. Installation port; 222. Sealing door; 3. Sedimentation mechanism; 31. Bottom assembly; 32. Sponge filter assembly; 311. Bottom inclined plate; 312. High inclined plate; 313. Suction port; 321. Mounting bracket; 322. Filter cotton. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1, please refer to Figures 1-5 This invention relates to a rainwater harvesting and reuse device for sponge cities, comprising a tank structure 1, which further includes a filter tank 111.

[0043] Tank structure 1, with a storage space inside for storing collected rainwater;

[0044] Filtering mechanism 2 is equipped with a filter for filtering out visible impurities and silt from rainwater.

[0045] Sedimentation mechanism 3 is equipped with a sedimentation plate to prevent water flow from directly impacting the sedimentation tank;

[0046] A water baffle plate 123 is fixedly connected to the inner wall of the filter tank 111, and a bottom inclined plate 311 is fixedly connected to the bottom of the inner wall of the filter tank 111. A grid plate 211 is fixedly connected to the outer wall of the water baffle plate 123, and the outer wall of the grid plate 211 is fixedly connected to the inner wall of the filter tank 111.

[0047] Tank structure 1 includes:

[0048] Tank assembly 11 is fixedly connected to the outer wall of tank mechanism 1 and is used to store collected rainwater;

[0049] Inlet assembly 12 is fixedly connected to the top of tank assembly 11 and is used to connect an external pipe to guide the collected rainwater into tank assembly 11.

[0050] Filter mechanism 2 includes:

[0051] Filter assembly 21 is fixedly connected to the inner wall of tank assembly 11 and is used to filter larger impurities, such as leaves and weeds.

[0052] Replacement component 22 is fixedly connected to the outer wall of tank assembly 11 and is used to open and close filter tank 111 to facilitate the replacement of its filter components.

[0053] Precipitation mechanism 3 includes:

[0054] Bottom component 31 is fixedly connected to the inner wall of tank component 11 and is used to guide the accumulation of precipitated impurities.

[0055] The sponge filter assembly 32 is fixedly connected to the inner wall of the tank assembly 11 to prevent impurities and sediments from floating to the surface.

[0056] The tank assembly 11 includes a drain outlet 112 on the outer wall of the filter tank 111, a drain outlet 113 on the outer wall of the filter tank 111, a connecting pipe 115 fixedly connected to the outer wall of the drain outlet 113, and a mixing tank 114 fixedly connected to the end of the connecting pipe 115 away from the drain outlet 113.

[0057] The inlet assembly 12 includes an inlet 121 opened at the top of the filter tank 111, and an observation mirror 122 is fixedly connected to the top of the filter tank 111.

[0058] The filter assembly 21 includes a cartilage frame 212 that is attached to the surface of the grid plate 211. The inner wall of the cartilage frame 212 is fixedly connected to a filter mesh cotton 214, and the outer wall of the cartilage frame 212 is fixedly connected to a cartilage handle 213. When rainwater enters the equipment through the inlet 121, it will fall onto the filter mechanism 2. The filter mechanism 2 will filter out large particles or impurities such as leaves. When the transported rainwater impacts the grid plate 211, the grid plate 211 will offset all the impact force, allowing the rainwater to pass through the filter mesh cotton 214 and the grid plate 211 into the lower end of the equipment. Since the filter mechanism 2 filters impurities while resisting the impact force of the water flow, the rainwater drips to the bottom through the filter mechanism 2, avoiding direct impact on the rainwater accumulated at the bottom. This prevents the accumulated rainwater from becoming turbid during the sedimentation process and failing to settle under the impact of the water flow at the top.

[0059] Example 2, please refer to Figures 3-9 The present invention is a rainwater harvesting and reuse device for sponge cities. Based on Example 1, the replacement component 22 includes an installation port 221 fixed on the surface of the filter tank 111, and the outer wall of the installation port 221 is provided with a closed door 222.

[0060] The bottom assembly 31 includes a bottom inclined plate 311 fixedly connected to the bottom of the inner wall of the filter tank 111. A high inclined plate 312 is fixedly connected to the outer wall of the bottom inclined plate 311. A suction port 313 is provided at the connection between the high inclined plate 312 and the bottom inclined plate 311. Utilizing the aforementioned sedimentation characteristics, when rainwater is transported into the equipment through the inlet 121, it will settle at the bottom of the filter tank 111 during the accumulation process. Due to the suction port 313, as the height of the rainwater accumulated inside the filter tank 111 increases, the pressure exerted on the bottom also increases. When the rainwater accumulates to a certain level, the internal pressure drop is relatively high, and the suction port 313 connects to the discharge port 1. When 12 is connected, a strong suction force is generated due to the pressure, causing the rainwater accumulated inside the filter tank 111 to flow through the suction port 313 to the discharge port 112. Because the suction port 313 is relatively small, it increases the flow velocity in the vicinity and the suction force is strong. However, because the suction port 313 is relatively small, the suction force generated is limited and cannot change the internal operation mode of the filter tank 111. The suction force generated by the suction port 313 will cause the mud and sand that originally settled at the bottom of the filter tank 111 to be sucked away through the suction port 313, preventing excessive sedimentation inside the filter tank 111 from exceeding the gap reserved at the bottom of the baffle plate 123, which would prevent the accumulated rainwater from flowing normally through the gap reserved at the bottom of the baffle plate 123.

[0061] The sponge filter assembly 32 includes a mounting bracket 321 fixedly connected to the inner wall of the filter tank 111. The outer wall of the mounting bracket 321 is fixedly connected to the outer wall of the baffle plate 123. Filter cotton 322 is fixedly connected to the top of the mounting bracket 321. To address the problem of sediment blockage, when rainwater enters the filter tank 111, it accumulates inside. During this accumulation process, sediment settles at the bottom due to its own weight. Simultaneously, as rainwater continues to accumulate inside the filter tank 111, the water level rises continuously. When the accumulated water level exceeds the filter cotton 322, due to the baffle plate 123, the rainwater accumulated at one end of the filter cotton 322 remains relatively calm, without any other force or cause to cause shaking. The sediment that does not settle naturally is intercepted at the bottom of the filter cotton 322. When the rainwater reaches the drain outlet 113, it flows into the mixing tank 114. The flow force generated at the inlet 113 is a natural flow, and the bottom of the rainwater is not affected by this force. The silt is not affected by the suction and flows upward with the water through the filter cotton 322, causing the inside or outer surface of the filter cotton 322 to be filled with silt, resulting in blockage and difficulty in cleaning, which affects the efficiency of the rainwater recycling equipment. Utilizing the above-mentioned rainwater accumulation and sedimentation process, the bottom of the filter tank 111 of the equipment is provided with a bottom inclined plate 311, and the top of the bottom inclined plate 311 is fixedly connected to a high inclined plate 312. The high inclined plate 312 is located on the side far from the filter cotton 322, which is called the right side of the equipment, and the end of the filter cotton 322 is the left side. The silt will settle on the outer surface of the bottom inclined plate 311 and the high inclined plate 312, avoiding the accumulation of some silt that cannot be discharged by the suction port 313 due to long-term sedimentation. The equipment of the bottom inclined plate 311 and the high inclined plate 312 can effectively prevent the silt from accumulating into clumps.

[0062] One specific application of this embodiment is as follows: Before use, the inlet 121 is connected to the rainwater collector via a pipe, or the pre-filtered rainwater is transported to the inlet 121 via other pipes. Some large particles that are not cleaned will be intercepted by the filter mechanism 2 and fall into the installation port 221. The filter mesh cotton 214 can be cleaned or replaced by opening the sealing door 222. The filter mesh cotton 214 is fixed on the cartilage frame 212. It can be pulled out and replaced after the cartilage frame 212 deforms due to its own characteristics. The drain port 112 is connected to the drain pipe. Depending on the usage scenario, the drain port 113 can be connected to the mixing tank 114 or other subsequent processes. The internal situation can be observed through the observation mirror 122. When rainwater enters the filter tank 111, it will accumulate inside the filter tank 111. During the accumulation process, the sediment will be removed due to its own force. The weight of the filter settles at the bottom, and as rainwater accumulates inside the filter tank 111, the water level rises continuously. When the accumulated water level exceeds that of the filter cotton 322, due to the baffle plate 123, the rainwater accumulated at one end of the filter cotton 322 remains relatively calm, without any other force or cause to cause shaking. The sediment that does not settle naturally is intercepted at the bottom of the filter cotton 322. When the rainwater reaches the drain outlet 113 and flows into the mixing tank 114, the flow force generated when the water level reaches the drain outlet 113 is a natural flow. The bottom of the rainwater is not affected by this force, and the sediment is not affected by suction and flows upward with the water through the filter cotton 322, causing the inside or outer surface of the filter cotton 322 to be filled with sediment, resulting in blockage and difficulty in cleaning, which affects the efficiency of the rainwater recovery equipment.

[0063] Utilizing the aforementioned sedimentation characteristics, when rainwater is transported into the equipment through inlet 121, it accumulates at the bottom of filter tank 111. Due to the suction port 313, as the accumulated rainwater inside filter tank 111 increases in height, the pressure exerted on the bottom also increases. When the rainwater reaches a certain level, the internal pressure drop becomes significant. The suction port 313 then connects to the discharge port 112, generating a strong suction force due to the pressure difference. This force forces the rainwater accumulated inside filter tank 111 through the suction port. 313 flows towards the drain outlet 112. Due to the small size of the suction port 313, the flow velocity in the vicinity is increased and the suction force is stronger. However, due to the small size of the suction port 313, the suction force generated is limited and cannot change the internal operation mode of the filter tank 111. The suction force generated by the suction port 313 will cause the mud and sand that originally settled at the bottom of the filter tank 111 to be sucked away through the suction port 313, so as to avoid excessive sedimentation inside the filter tank 111, which would exceed the gap reserved at the bottom of the baffle plate 123 and cause the accumulated rainwater to be unable to flow normally through the gap reserved at the bottom of the baffle plate 123.

[0064] Utilizing the aforementioned rainwater accumulation and sedimentation process, the bottom of the filter tank 111 is equipped with a bottom inclined plate 311, and a high inclined plate 312 is fixedly connected to the top of the bottom inclined plate 311. The high inclined plate 312 is located on the side away from the filter cotton 322, referred to as the right side of the equipment, and one end of the filter cotton 322 is the left side. The sediment will settle on the outer surface of the bottom inclined plate 311 and the high inclined plate 312, preventing some sediment from being unable to be discharged by the suction port 313 and thus accumulating. The equipment of the bottom inclined plate 311 and the high inclined plate 312 can effectively prevent the sediment from accumulating into clumps.

[0065] When rainwater enters the equipment through inlet 121, it flows onto the filter mechanism 2, which filters out large particles or impurities such as leaves. When the rainwater impacts the grid plate 211, the grid plate 211 offsets all the impact force, allowing the rainwater to pass through the filter mesh cotton 214 and the grid plate 211 into the lower part of the equipment. Because the filter mechanism 2 filters impurities while resisting the impact force of the water flow, the rainwater flows through the filter mechanism 2 and slides to the bottom, avoiding direct impact on the rainwater accumulated at the bottom. This prevents the accumulated rainwater from becoming turbid during the sedimentation process and failing to settle under the impact of the water flow at the top.

[0066] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rainwater harvesting and reuse device for sponge cities, comprising a tank structure (1), wherein the tank structure (1) further comprises: The filter tank (111) is characterized by further comprising: The tank structure (1) has a storage space inside for storing collected rainwater; The filtration mechanism (2) is equipped with a filter for filtering out visible impurities and silt from rainwater. The sedimentation mechanism (3) is provided with a sedimentation plate to prevent water flow from directly impacting the sedimentation pool. The inner wall of the filter tank (111) is fixedly connected to a water baffle plate (123), the bottom of the inner wall of the filter tank (111) is fixedly connected to a bottom inclined plate (311), the outer wall of the water baffle plate (123) is fixedly connected to a grid plate (211), and the outer wall of the grid plate (211) is fixedly connected to the inner wall of the filter tank (111). The tank structure (1) includes: Tank assembly (11), which is fixedly connected to the outer wall of the tank mechanism (1) for storing collected rainwater; An inlet assembly (12) is fixedly connected to the top of the tank assembly (11) for connecting an external pipe to guide the collected rainwater into the tank assembly (11). The filtration mechanism (2) includes: A filter assembly (21) is fixedly connected to the inner wall of the tank assembly (11) and is used to filter larger impurities. Replacement component (22), which is fixedly connected to the outer wall of the tank assembly (11) and is used to open and close the filter tank (111) to facilitate the replacement of its filter components; The precipitation mechanism (3) includes: Bottom component (31), which is fixedly connected to the inner wall of tank component (11), is used to guide the accumulation of precipitated impurities; A sponge filter assembly (32) is fixedly connected to the inner wall of the tank assembly (11) to prevent impurities from floating to the surface.

2. The sponge city rainwater harvesting and reuse equipment according to claim 1, characterized in that: The tank assembly (11) includes a drain outlet (112) on the outer wall of the filter tank (111), a drain outlet (113) on the outer wall of the filter tank (111), a connecting pipe (115) fixedly connected to the outer wall of the drain outlet (113), and a mixing tank (114) fixedly connected to one end of the connecting pipe (115) away from the drain outlet (113).

3. The sponge city rainwater harvesting and reuse equipment according to claim 2, characterized in that: The inlet assembly (12) includes an inlet (121) opened on the top of the filter tank (111), and an observation mirror (122) is fixedly connected to the top of the filter tank (111).

4. The sponge city rainwater harvesting and reuse equipment according to claim 3, characterized in that: The filter assembly (21) includes a cartilage frame (212) that is attached to the surface of the grid plate (211). The inner wall of the cartilage frame (212) is fixedly connected with a filter mesh cotton (214), and the outer wall of the cartilage frame (212) is fixedly connected with a cartilage handle (213).

5. The sponge city rainwater harvesting and reuse equipment according to claim 4, characterized in that: The replacement component (22) includes a mounting port (221) fixed to the surface of the filter tank (111), and the outer wall of the mounting port (221) is provided with a sealing door (222).

6. The sponge city rainwater harvesting and reuse equipment according to claim 5, characterized in that: The bottom assembly (31) includes a bottom inclined plate (311) fixedly connected to the bottom of the inner wall of the filter tank (111), and a high inclined plate (312) fixedly connected to the outer wall of the bottom inclined plate (311). A suction port (313) is provided at the connection between the high inclined plate (312) and the bottom inclined plate (311).

7. A sponge city rainwater harvesting and reuse device according to claim 6, characterized in that: The sponge filter assembly (32) includes a mounting bracket (321) fixedly connected to the inner wall of the filter tank (111), the outer wall of the mounting bracket (321) being fixedly connected to the outer wall of the water-proof plate (123), and a filter cotton (322) being fixedly connected to the top of the mounting bracket (321).

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