Rainwater diversion and purification system for sponge city

Abstract

The utility model provides a rainwater diversion and purification system for a sponge city. The rainwater diversion and purification system comprises a plurality of rainwater diversion and purification units uniformly distributed in the city and a water storage unit communicated with the rainwater diversion and purification units through pipelines. Each rainwater diversion and purification unit comprises a fixing structure, a filter cartridge and a cleaning structure. The fixing structure is provided with a cylinder cavity, and a separating ring for separating the cylinder cavity into a water inlet space and a water outlet space is arranged in the cylinder cavity. The filter cartridge is fixedly arranged on the partition part, the top end of the filter cartridge is located in the water inlet space, and the bottom end of the filter cartridge is located in the water outlet space. A filtering part is arranged on the filtering cylinder, and the filtering cylinder can filter water in the process that the water in the water inlet space is guided into the water outlet space. The cleaning structure can be driven by water flow in the filter cartridge to clean impurities attached to the filter part. According to the rainwater diversion and purification system for the sponge city, the filtering holes can be prevented from being blocked, the filtering and collecting effect of rainwater is guaranteed, and practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of urban rainwater treatment, and in particular relates to a rainwater diversion and purification system for a sponge city. Background Art

[0002] Sponge city refers to the effective management and utilization of rainwater in cities by imitating natural processes and taking a series of engineering measures and management strategies to improve the adaptability and resistance of cities to water resources and promote sustainable urban development. The core concept of sponge city is to reconcile the relationship between urban development and the natural environment, and through the rainwater diversion and purification system, it can absorb, store and infiltrate water when it rains, and release and use water when needed.

[0003] In the prior art, the rainwater diversion and purification system usually includes a rainwater purification and diversion device connected to a water storage tank, for example, the application number is: CN202122712913.4; the patent name is: Rainwater purification and diversion device for sponge cities. The device includes a diversion pipe connected upper and lower, and a filter material is provided on the diversion pipe. During the working process, gravel is filled on the outside of the diversion pipe for preliminary filtration of rainwater, and then the rainwater is further filtered through the filter material. However, when the rainwater is large, the impurities mixed in the rainwater will block the filter material, which will lead to a decrease in the water flow efficiency of the filter material, affect the rainwater collection effect, and have poor practicality. Moreover, the way the gravel is filled is not convenient for cleaning the sediment at the bottom of the gravel. Utility Model Content

[0004] The embodiment of the utility model provides a rainwater diversion and purification system for a sponge city, aiming to solve the problem of the existing rainwater diversion and purification system that the filtering structure is easily blocked, thereby affecting the rainwater collection effect.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a rainwater diversion and purification system for a sponge city, comprising a plurality of rainwater diversion and purification units evenly distributed in the city and a water storage unit connected to each of the rainwater diversion and purification units through a pipeline;

[0006] Each of the rainwater diversion and purification units comprises:

[0007] A fixed structure is buried under the ground, with its top flush with the ground, the fixed structure having a cylindrical cavity, and a horizontally arranged partition is provided in the cylindrical cavity, the partition divides the cylindrical cavity into a water inlet space connected to the space above the ground and a water outlet space located below the water inlet space;

[0008] A filter cartridge is arranged and fixed on the partition along the vertical direction, the top end of the filter cartridge is located in the water inlet space, and the bottom end is located in the water outlet space; the filter cartridge is provided with a filter portion on the side wall of the water inlet space, and the filter cartridge is used to filter water in the process of introducing water from the water inlet space into the water outlet space;

[0009] The cleaning structure is arranged on the filter cartridge and is used to clean the impurities attached to the filter part under the driving of the water flow inside the filter cartridge.

[0010] In a possible implementation, the fixing structure includes:

[0011] The outer cylinder is buried in the ground and has a cavity with an open top. The inner wall of the cavity is provided with a horizontally arranged annular platform near the open top.

[0012] An inner cylinder is arranged in the cavity, and a top end of the inner cylinder is provided with an annular folded edge mounted on the annular platform; the inner cylinder has an accommodating cavity penetrating in the vertical direction;

[0013] A separator ring is disposed in the accommodating cavity and fixedly connected to the inner cylinder, wherein the separator ring has a through hole for the filter cylinder to pass through; the separator ring is the separator;

[0014] The grid plate is buckled at the open end of the outer tube and is placed on the annular folded edge. The grid plate, the inner tube, the outer tube and the separation ring are combined to form the water inlet space and the water outlet space.

[0015] In a possible implementation, a fixing ring is provided on the outer wall of the filter cartridge, and the fixing ring is mounted on the separating ring and is detachably connected to the separating ring.

[0016] In a possible implementation manner, the fixing ring and the separation ring are connected by bolts.

[0017] In a possible implementation, the filter cartridge is a cylindrical structure;

[0018] The portion of the filter cartridge located in the water inlet space is defined as a water inlet section, and a filter net is disposed on the outer wall of the water inlet section.

[0019] In a possible implementation, the cleaning structure includes:

[0020] A cover plate, fixedly mounted on the top of the filter cartridge;

[0021] A rotating shaft is arranged along the vertical direction and is rotatably connected with the cover plate, the rotating axis of the rotating shaft is arranged colinearly with the axis of the filter cartridge, the top end of the rotating shaft extends out of the cover plate, and the bottom end of the rotating shaft is located below the partition;

[0022] A rotating frame, fixedly connected to the top end of the rotating shaft, the rotating frame having a plurality of connecting ends arranged in annular intervals and extending along the radial direction of the filter cartridge;

[0023] A plurality of vertical rods are provided, each of which is arranged in one-to-one correspondence with each of the connecting ends, the top of each of the vertical rods is fixedly connected to the corresponding connecting end, and a brush that contacts the filter screen is provided on one side of each of the vertical rods facing the filter cylinder;

[0024] The impeller is located inside the filter cartridge and below the partition, and is coaxially connected to the rotating shaft.

[0025] In a possible implementation, the cover plate is connected to the filter cartridge by a flange;

[0026] The top end of the filter cartridge is provided with a flange surface.

[0027] In this implementation, the filter cartridge in the rainwater diversion and purification unit can divert rainwater in the water inlet space to the water outlet space, and filter the rainwater at the same time to ensure that the rainwater transported by the pipeline to the water storage unit is purified. The cleaning structure can be driven by rainwater when the rainwater passes through the filter cartridge to clean the impurities attached to the filter part to avoid clogging of the filter holes, thereby ensuring the filtration efficiency of rainwater and further ensuring the collection effect of rainwater, which is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of a rainwater diversion and purification system for a sponge city provided by an embodiment of the utility model;

[0029] Figure 2 A schematic cross-sectional view of a rainwater diversion and purification unit in a rainwater diversion and purification system for a sponge city provided by an embodiment of the utility model;

[0030] Description of reference numerals:

[0031] 100. Rainwater diversion and purification unit; 30. Fixed structure; 31. Outer cylinder; 311. Annular platform; 32. Inner cylinder; 321. Annular folded edge; 33. Separation ring; 34. Grid plate; 40. Filter cylinder; 41. Filter net; 50. Cleaning structure; 51. Cover plate; 52. Rotating shaft; 53. Rotating frame; 54. Vertical rod; 55. Impeller; 56. Brush; 200. Water storage unit. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] Please also read Figure 1 and Figure 2 The rainwater diversion and purification system for a sponge city provided by the utility model is now described. The rainwater diversion and purification system for a sponge city comprises a plurality of rainwater diversion and purification units 100 uniformly distributed in the city and a water storage unit 200 connected to each rainwater diversion and purification unit 100 through a pipeline.

[0034] Each rainwater diversion purification unit 100 includes a fixed structure 30, a filter cartridge 40 and a cleaning structure 50. The fixed structure 30 is buried under the ground, and the top is arranged flush with the ground. The fixed structure 30 has a cylinder cavity, and a horizontally arranged partition is provided in the cylinder cavity. The partition divides the cylinder cavity into an inlet space connected to the space above the ground and an outlet space located below the inlet space. The filter cartridge 40 is arranged and fixed on the partition along the vertical direction, and the top of the filter cartridge 40 is located in the inlet space, and the bottom is located in the outlet space. The filter cartridge 40 is provided with a filter portion on the side wall of the inlet space, and the filter cartridge 40 can filter water in the process of introducing water from the inlet space to the outlet space. The cleaning structure 50 is arranged on the filter cartridge 40, and can clean impurities attached to the filter portion under the drive of the water flow inside the filter cartridge 40.

[0035] The rainwater diversion and purification unit 100 can collect rainwater and divert it to the water storage unit 200 through a pipeline for storage to ensure subsequent water use.

[0036] Compared with the prior art, the rainwater diversion and purification system for sponge cities provided in this embodiment has the filter cartridge 40 in the rainwater diversion and purification unit 100 capable of diverting rainwater in the water inlet space to the water outlet space, and filtering the rainwater at the same time, so as to ensure that the rainwater transported by the pipeline to the water storage unit 200 is purified. The cleaning structure 50 can be driven by the rainwater in the process of the rainwater passing through the filter cartridge 40, clean the impurities attached to the filter part, avoid the filter holes from being blocked, and ensure the filtering efficiency of the rainwater, thereby ensuring the rainwater collection effect, and has strong practicality.

[0037] In some embodiments, the fixing structure 30 may be configured as follows: Figure 2 See the structure shown. Figure 2The fixed structure 30 includes an outer cylinder 31, an inner cylinder 32, a separator ring 33 and a grid plate 34. The outer cylinder 31 is buried in the ground and has a cavity with an open top. A horizontally arranged annular platform 311 is provided on the inner wall of the cavity near the open top. The inner cylinder 32 is arranged in the cavity, and an annular folding edge 321 is provided on the top of the inner cylinder 32 and is mounted on the annular platform 311. The inner cylinder 32 has a accommodating cavity that passes through in the vertical direction. The separator ring 33 is arranged in the accommodating cavity and is fixedly connected to the inner cylinder 32. The separator ring 33 has a through hole for the filter cylinder 40 to pass through. The separator ring 33 is a partition. The grid plate 34 is buckled at the open top of the outer cylinder 31 and is mounted on the annular folding edge 321. The grid plate 34, the inner cylinder 32, the outer cylinder 31 and the separator ring 33 are combined to form a water inlet space and a water outlet space.

[0038] The outer cylinder 31 can be buried in the ground, and the bottom end of the outer cylinder 31 is connected to the pipeline to ensure that a supporting space is provided. Preferably, the outer cylinder 31 can be a circular cylinder. The inner cylinder 32 can be mounted on the annular platform 311 at the top of the outer cylinder 31 through the annular fold 321 set at the top to ensure the stability of the inner cylinder 32. Of course, in order to ensure the stability of the connection between the two, they can be connected by bolts. The separation ring 33 can mainly separate the accommodating cavity of the inner cylinder 32, and at the same time can ensure the fixed installation of the filter cylinder 40. Of course, during the filtering process, the separation ring 33 can also receive impurities swept by the cleaning structure 50 to facilitate subsequent cleaning.

[0039] The grille plate buckled at the open end of the outer tube 31 can ensure that large-sized impurities carried in the rainwater, such as leaves, branches, garbage, etc., are filtered when the rainwater passes through, so as to prevent these large-sized impurities from clogging the filter part.

[0040] In some embodiments, the filter cartridge 40 may be used as follows: Figure 2 See the structure shown. Figure 2 A fixing ring is provided on the outer wall of the filter cartridge 40 , and the fixing ring is mounted on the separating ring 33 and is detachably connected to the separating ring 33 .

[0041] This connection structure is easy to disassemble and assemble, and can also ensure the stability of the connection.

[0042] In some embodiments, the fixing ring and the separating ring 33 may be formed as follows: Figure 2 See the structure shown. Figure 2 The fixing ring and the separation ring 33 are connected by bolts to ensure the connection strength, good sealing effect, and easy disassembly and assembly.

[0043] In some embodiments, the filter cartridge 40 may be used as follows: Figure 2 See the structure shown. Figure 2 The filter cartridge 40 is a cylindrical structure.

[0044] The portion of the filter cartridge 40 located in the water inlet space is defined as a water inlet section, and a filter net 41 is disposed on the outer wall of the water inlet section.

[0045] The filter screen 41 can ensure the re-filtration of rainwater. Preferably, the filter screen 41 can be welded to the filter cartridge 40 , and correspondingly, a plurality of long water-passing openings are provided in a ring shape on the side wall of the filter cartridge 40 , which are covered by the filter screen 41 .

[0046] In some embodiments, the cleaning structure 50 may be configured as follows: Figure 2 See the structure shown. Figure 2 The cleaning structure 50 includes a cover plate 51, a rotating shaft 52, a rotating frame 53, a vertical rod 54 and an impeller 55. The cover plate 51 is fixedly arranged at the top of the filter cartridge 40. The rotating shaft 52 is arranged along the vertical direction and is rotatably connected with the cover plate 51. The rotating axis of the rotating shaft 52 is arranged colinearly with the axis of the filter cartridge 40. The top of the rotating shaft 52 extends out of the cover plate 51, and the bottom of the rotating shaft 52 is located below the partition. The rotating frame 53 is fixedly connected to the top of the rotating shaft 52. The rotating frame 53 has a plurality of connecting ends arranged at annular intervals and extending along the radial direction of the filter cartridge 40. A plurality of vertical rods 54 are provided, each vertical rod 54 is arranged in a one-to-one correspondence with each connecting end, the top of each vertical rod 54 is fixedly connected with the corresponding connecting end, and each vertical rod 54 is provided with a brush 56 in contact with the filter screen 41 on the side facing the filter cartridge 40. The impeller 55 is located inside the filter cartridge 40, below the partition, and is coaxially connected with the rotating shaft 52.

[0047] When rainwater passes through the filter cartridge 40, especially when the rainfall is heavy, the water inflow is large and the water flow is rapid, and the filter screen 41 is easily blocked. At this time, the rainwater drives the impeller 55 to rotate, and then drives the rotating shaft 52 to rotate, and drives the vertical rods 54 to rotate through the rotating frame 53, so that the brushes 56 surround the filter cartridge 40 and sweep the filter screen 41 in an annular manner, so that the impurities blocked on the filter screen 41 are cleaned and fall on the separation ring 33.

[0048] This structure can prevent the filter screen 41 from being blocked, thereby ensuring the filtering effect.

[0049] In some embodiments, the filter cartridge 40 may be used as follows: Figure 2 See the structure shown. Figure 2 The cover plate 51 is connected to the filter cartridge 40 by a flange, and a flange surface is provided on the top of the filter cartridge 40. This structure is easy to disassemble and assemble, has a simple structure, and is easy to manufacture.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The rainwater diversion and purification system for sponge cities is characterized by: It comprises a plurality of rainwater diversion and purification units evenly distributed in the city and a water storage unit connected with each of the rainwater diversion and purification units through a pipeline; Each of the rainwater diversion and purification units comprises: A fixed structure is buried under the ground, with its top flush with the ground, the fixed structure having a cylindrical cavity, and a horizontally arranged partition is provided in the cylindrical cavity, the partition divides the cylindrical cavity into a water inlet space connected to the space above the ground and a water outlet space located below the water inlet space; A filter cartridge is arranged and fixed on the partition along the vertical direction, the top end of the filter cartridge is located in the water inlet space, and the bottom end is located in the water outlet space; the filter cartridge is provided with a filter portion on the side wall of the water inlet space, and the filter cartridge is used to filter water in the process of introducing water from the water inlet space into the water outlet space; The cleaning structure is arranged on the filter cartridge and is used to clean the impurities attached to the filter part under the driving of the water flow inside the filter cartridge.

2. The rainwater diversion and purification system for sponge cities according to claim 1, characterized in that: The fixed structure comprises: The outer cylinder is buried in the ground and has a cavity with an open top. The inner wall of the cavity is provided with a horizontally arranged annular platform near the open top. An inner cylinder is arranged in the cavity, and a top end of the inner cylinder is provided with an annular folded edge mounted on the annular platform; the inner cylinder has an accommodating cavity penetrating in the vertical direction; A separator ring is disposed in the accommodating cavity and fixedly connected to the inner cylinder, wherein the separator ring has a through hole for the filter cylinder to pass through; the separator ring is the separator; The grid plate is buckled at the open end of the outer tube and is placed on the annular folded edge. The grid plate, the inner tube, the outer tube and the separation ring are combined to form the water inlet space and the water outlet space.

3. The rainwater diversion and purification system for sponge cities according to claim 2, characterized in that: A fixing ring is arranged on the outer wall of the filter cartridge. The fixing ring is mounted on the separating ring and is detachably connected to the separating ring.

4. The rainwater diversion and purification system for sponge cities according to claim 3, characterized in that: The fixing ring is connected to the separating ring by bolts.

5. The rainwater diversion and purification system for sponge cities according to claim 1, characterized in that: The filter cartridge has a cylindrical shape; The portion of the filter cartridge located in the water inlet space is defined as a water inlet section, and a filter net is disposed on the outer wall of the water inlet section.

6. The rainwater diversion and purification system for sponge cities according to claim 5, characterized in that: The cleaning structure comprises: A cover plate, fixedly mounted on the top of the filter cartridge; A rotating shaft is arranged along the vertical direction and is rotatably connected with the cover plate, the rotating axis of the rotating shaft is arranged colinearly with the axis of the filter cartridge, the top end of the rotating shaft extends out of the cover plate, and the bottom end of the rotating shaft is located below the partition; A rotating frame, fixedly connected to the top end of the rotating shaft, the rotating frame having a plurality of connecting ends arranged in annular intervals and extending along the radial direction of the filter cartridge; A plurality of vertical rods are provided, each of which is arranged in one-to-one correspondence with each of the connecting ends, the top of each of the vertical rods is fixedly connected to the corresponding connecting end, and a brush that contacts the filter screen is provided on one side of each of the vertical rods facing the filter cylinder; The impeller is located inside the filter cartridge and below the partition, and is coaxially connected to the rotating shaft.

7. The rainwater diversion and purification system for sponge cities according to claim 6, characterized in that: The cover plate is connected to the filter cartridge by a flange; The top end of the filter cartridge is provided with a flange surface.

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