Rainwater harvesting method, apparatus and system

Abstract

This invention relates to the field of rainwater harvesting technology, and in particular to a rainwater harvesting method, apparatus, and system. The method includes: opening the collection end of a collection well at the start of rainfall; acquiring the current time and the start time of rainfall; calculating the difference between the current time and the start time of rainfall to obtain the rainfall duration; connecting corresponding collection pipes and / or infiltration wells based on a comparison between the rainfall duration and a set threshold; and activating a cleaning mechanism when the content of accumulated media in the collection well exceeds a preset value. The rainwater harvesting method provided in this application connects corresponding collection pipes and / or infiltration wells based on a comparison between the rainfall duration and a set threshold to classify and collect rainwater from different rainfall periods; and activates a cleaning mechanism when the content of accumulated media in the collection well exceeds a preset value to ensure normal system operation and collection of sediment.

Description

Technical Field

[0001] This invention relates to the field of rainwater harvesting technology, and in particular to a rainwater harvesting method, apparatus and system. Background Technology

[0002] Rainwater harvesting wells are facilities that collect rainwater, typically located along city roads or within residential areas. These wells are man-made engineering structures that utilize natural rainfall for water storage and reuse, collecting, storing, and regulating rainwater runoff within urban areas to replenish groundwater or for landscaping purposes.

[0003] However, the purity of rainwater varies at different times of rainfall, and existing technologies do not provide a method for classifying, collecting, and treating rainwater and its mixed sediment. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a rainwater collection method, apparatus and system.

[0005] In a first aspect, embodiments of the present invention provide a rainwater harvesting method, the method comprising:

[0006] At the onset of rainfall, open the water collection end of the sump;

[0007] Get the current time and the start time of rainfall;

[0008] Calculate the difference between the current time and the rainfall start time to obtain the rainfall duration;

[0009] Based on the comparison between the rainfall duration and the set threshold, the corresponding water collection pipeline and / or seepage well are opened, and the cleaning mechanism is activated when the content of the accumulated medium in the water collection well exceeds the preset value.

[0010] In conjunction with the first aspect, the bottom of the water collection well is connected to a seepage well, the lower part of the water collection well is connected to the sewage pipe network and / or sewage treatment system through a first water collection pipeline, and the lower part of the water collection well is also connected to the rainwater pipe network through a second water collection pipeline.

[0011] The step of activating the corresponding water collection pipeline based on the comparison between the rainfall duration and the set threshold includes:

[0012] If t≤t c Connect the first water collection pipeline;

[0013] If t>t c The first water collection pipeline is blocked, and the seepage well is opened and the second water collection pipeline is connected.

[0014] Where t is the duration of rainfall, t c This is the duration threshold.

[0015] In conjunction with the first aspect, the water collection well includes multiple well sections, each well section is provided with a filtration mechanism at its bottom and a cleaning mechanism at its end face;

[0016] The step of activating the cleaning mechanism when the content of the accumulated medium in the water collection well exceeds a preset value also includes:

[0017] For each well section, when the accumulated medium in the well section reaches a preset value, the cleaning mechanism is activated to clean the well section.

[0018] In conjunction with the first aspect, the method further includes:

[0019] If there is no rainfall, shut off the water collection end of the water collection well, the water collection pipeline, and the seepage well.

[0020] In conjunction with the first aspect, each well section is provided with a detachable collection assembly at its end face, the collection assembly being located at the end of the stroke of the cleaning mechanism for collecting the accumulated medium cleaned by the cleaning mechanism; the method further includes:

[0021] If there is no rainfall at present, disassemble the collection assembly to dump the cleaned-up accumulated media.

[0022] Secondly, this application provides a rainwater collection device, the device comprising:

[0023] The activation module is used to activate the water collection end of the sump at the onset of rainfall.

[0024] The acquisition module is used to obtain the current time and the start time of rainfall;

[0025] The calculation module is used to calculate the difference between the current time and the rainfall start time to obtain the rainfall duration;

[0026] The opening and closing module is used to connect the corresponding water collection pipeline and / or seepage well according to the comparison relationship between the rainfall duration and the set threshold, and to activate the cleaning mechanism when the content of the accumulated medium in the water collection well exceeds the preset value.

[0027] Thirdly, this application provides a rainwater collection system, the collection system comprising: a collection well, the top of the collection well being a collection end, the bottom of the collection well being connected to an infiltration well, the lower part of the collection well being connected to a sewage network and / or a sewage treatment system through a first water supply and collection pipeline, and the lower part of the collection well being connected to a rainwater network through a second water collection pipeline; the top of the infiltration well is provided with an openable and closable manhole cover.

[0028] In conjunction with the third aspect, the water collection end of the water collection well is equipped with a hinged cover, and the water collection end can be opened or closed by adjusting the opening and closing state of the hinged cover.

[0029] In conjunction with the third aspect, the water collection well includes multiple well sections, which are arranged along the height direction of the water collection well; each well section is provided with a filtration mechanism at its bottom, and the diameter of the through holes on the multiple filtration mechanisms gradually decreases from top to bottom along the height direction of the water collection well; each well section is provided with a cleaning mechanism at its end face.

[0030] In conjunction with the third aspect, each well section is provided with a detachable collection assembly at its end face, the collection assembly being located at the end of the stroke of the cleaning mechanism.

[0031] The embodiments of the present invention bring the following beneficial effects: The present invention provides a rainwater collection method, device and system. The method includes: opening the collection end of the collection well at the start of rainfall; obtaining the current time and the start time of rainfall; calculating the difference between the current time and the start time of rainfall to obtain the rainfall duration; connecting the corresponding collection pipeline and / or infiltration well according to the comparison relationship between the rainfall duration and a set threshold; and activating a cleaning mechanism when the content of the accumulated medium in the collection well exceeds a preset value.

[0032] The rainwater harvesting method provided in this application, based on the comparison between rainfall duration and a set threshold, activates corresponding collection pipes and / or infiltration wells to classify and collect rainwater from different rainfall periods. Furthermore, when the content of accumulated media in the collection well exceeds a preset value, a cleaning mechanism is activated to remove the accumulated media and prevent blockage. This allows for the classified collection of rainwater from different rainfall periods and enables the timely cleaning of collection wells to prevent blockage, ensuring the normal operation of the system and facilitating the later utilization of rainwater and sediment.

[0033] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1This is a flowchart of a rainwater harvesting method provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the rainwater collection device provided in an embodiment of the present invention;

[0038] Figure 3 This is a cross-sectional schematic diagram of the well section in the rainwater collection device provided in an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the collection component in the rainwater collection device provided in an embodiment of the present invention. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions 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, 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.

[0041] To facilitate understanding of this embodiment, the technical terms used in this application will be briefly introduced below.

[0042] A seepage well is a vertical hole drilled in the strata to divert surface water and upper groundwater to deeper underground layers, in accordance with the natural seepage process. It is a type of vertical underground drainage facility.

[0043] After introducing the technical terms used in this application, the application scenarios and design concepts of the embodiments of this application will be briefly described below.

[0044] The purity of rainwater varies at different times of rainfall. If rainwater from different periods is not collected and classified and discharged into natural water bodies, it will cause pollution of natural water bodies.

[0045] Example 1

[0046] This application provides a rainwater harvesting method, combined with Figure 1 The method includes:

[0047] S110, at the moment of the onset of rainfall, open the water collection end of the water collection well.

[0048] S120, obtain the current time and the start time of rainfall.

[0049] S130, calculate the difference between the current time and the start time of the rainfall to obtain the duration of the rainfall.

[0050] S140, based on the comparison between rainfall duration and a set threshold, connect the corresponding water collection pipeline and / or seepage well, and activate the cleaning mechanism when the content of the accumulated medium in the water collection well exceeds a preset value.

[0051] In this embodiment, the water collection end of the collection well is opened at the start of rainfall to allow rainwater to flow into the collection well. Then, the corresponding collection pipeline and / or infiltration well are connected according to the duration of rainfall to classify and collect rainwater according to the duration of rainfall. When the content of the accumulated medium in the collection well exceeds a preset value, the cleaning mechanism is activated to ensure the normal working condition of the collection well.

[0052] The rainfall start time can be the time recorded by human perception of rainfall, the time obtained from a local area network search, or the time calculated based on meteorological information. All of these methods are acceptable, and different methods can be selected according to the actual application scenario; no limitation is imposed here.

[0053] In conjunction with the first aspect, the bottom of the water collection well is connected to a seepage well, the lower part of the water collection well is connected to the sewage pipe network and / or sewage treatment system through a first water collection pipe, and the lower part of the water collection well is also connected to the rainwater pipe network through a second water collection pipe.

[0054] Step S140, based on the comparison between rainfall duration and a set threshold, activates the corresponding water collection pipeline, including:

[0055] S141, if t≤t c Connect the first water collection pipeline;

[0056] S142, if t>t c The first water collection pipeline was blocked, and the seepage well was opened to connect the second water collection pipeline.

[0057] Where t is the duration of rainfall, t c This is the duration threshold.

[0058] Step S141, if t≤t c This indicates that we are currently in the initial stage of rainfall. At this time, the rainwater dissolves pollutants and dust particles from the air, and after falling, it washes over roofs, asphalt concrete roads, etc., resulting in a large amount of pollutants in the initial rainwater. If this initial rainwater is directly discharged into natural water bodies, it will cause very serious pollution. Therefore, it is necessary to divert and treat this initial rainwater. In this situation, the first collection pipe is opened; this prevents the initial rainwater from flowing into water bodies and diverts it to the first collection pipe, which then flows to the sewage network and / or sewage treatment system.

[0059] S142, if t>t cThis indicates that we are currently in the middle to late stages of rainfall. At this time, the pollution content in the rainwater is reduced and the pollution level is relatively low. It can be discharged directly into the natural receiving water body after simple treatment or even without treatment. Under these circumstances, the first collection pipeline is blocked to prevent rainwater from flowing into the sewage network and wasting natural resources. The infiltration well is opened to store the rainwater and guide it to the second collection pipeline to be discharged into the rainwater network and into the natural receiving water body.

[0060] In this way, by classifying and collecting rainwater at different rainfall periods, we can reduce the pollution of natural water bodies by rainwater with a higher degree of pollution in the early stages of rainfall, and effectively protect the natural aquatic environment.

[0061] In this embodiment, t is set c The value range is 15-30 min. For example, take t. c =20 minutes, then the period before 20 minutes is the initial stage of rainfall, and the period after 20 minutes is the middle and late stages of rainfall. This set duration threshold can be modified according to actual drainage requirements, and is not limited here.

[0062] In conjunction with the first aspect, the water collection well includes multiple well sections 1, each well section 1 is equipped with a filtration mechanism at its bottom, and each well section 1 is equipped with a cleaning mechanism 2 at its end face.

[0063] The steps for S140 to activate the cleaning mechanism when the content of accumulated media in the water collection well exceeds a preset value include:

[0064] S143, for each well section, when the accumulated medium in the well section reaches a preset value, the cleaning mechanism is activated to clean the well section.

[0065] In this embodiment, the water collection well includes multiple well sections 1. Each well section 1, arranged from top to bottom along the height direction, has a filter mechanism at its bottom. The filter mechanism has through-holes. Rainwater flows into the lower well section under gravity through these through-holes. If the diameter of pollutants in the rainwater is larger than the diameter of the through-hole, it will be intercepted. Over time, the through-holes may become partially or completely blocked, preventing rainwater from flowing downwards, necessitating cleaning of the well section. During this process, since there are many types of pollutants, and each pollutant has a different outer diameter, if the through-hole diameter is set too large, smaller pollutants cannot be intercepted. If the through-hole diameter is too small, although most pollutants are intercepted, most of them accumulate in the well section 1, easily causing frequent blockages. Therefore, in this embodiment, each well section has a filter mechanism at its bottom, and the diameter of the through-holes on the filter mechanism gradually decreases from top to bottom along the height direction of the water collection well. The accumulated medium in the well section 1 can be cleaned by activating the cleaning mechanism 2 located at the end face of each well section. In this way, different sizes of accumulated media can be intercepted in layers through through holes of different diameters. This can effectively intercept pollutants and obtain rainwater with less impurities, while avoiding frequent blockages in the well section. Moreover, sediment can be collected in segments according to size.

[0066] In conjunction with the first aspect, the method also includes:

[0067] S100, if there is no rainfall at present, close the water collection end of the water collection well, the water collection pipeline and the seepage well.

[0068] In the absence of rainfall, close the water collection end of the collection well to prevent fallen leaves and dust from falling into and contaminating the well.

[0069] In conjunction with the first aspect, each well section 1 is provided with a detachable collection component 3 at its end face. The collection component 3 is located at the end of the stroke of the cleaning mechanism 2 and is used to collect the accumulated medium cleaned by the cleaning mechanism 2; the method also includes:

[0070] S101, If ​​there is no rainfall at present, disassemble the collection assembly to dump the cleaned-up accumulated media.

[0071] Since the collection component 3 is located at the end of the stroke of the cleaning mechanism 2, the cleaning mechanism 2 cleans the accumulated medium to the collection component 3. In the absence of rainfall, the collection component 3 can be disassembled, the accumulated medium inside the collection component 3 can be poured out, and the collection component 3 can be detachably set at the end face of each well section 1.

[0072] The collecting component 3 is connected to the well section 1 in an open-closed manner. That is, when the accumulated medium in the well section 1 has not reached the preset threshold, the collecting component 3 is in a closed state. When the accumulated medium in the well section 1 reaches or exceeds the preset threshold, the collecting component 3 is in an open state to receive the accumulated medium pushed by the cleaning mechanism 2, and returns to the closed state after the cleaning is completed.

[0073] In this embodiment, the collection component 3 is located outside well section 1, as an implementable method, combined with Figure 3 , Figure 4 As shown, the collection assembly 3 has a connecting part 31 and a collection part 32. One end of the connecting part 31 is fixedly connected to the collection part 32. The connecting part 31 is connected to the outer side of the well section 1. A through window is provided on the side of the well section 1 that contacts the connecting part 31. The collection part 32 includes a collection part body and a cover 33. The collection part body and the cover 33 enclose a collection space 34. The cover 33 is a telescopic structure. When the cleaning mechanism 2 is not running, the cover 33 is in an extended state. The cover 33 and the collection part body enclose a sealed collection space 34. When the cleaning mechanism 2 is running, the cover 33 is in a retracted state. The collection space 34 is open and communicates with the well section 1. After the cleaning mechanism 2 pushes the accumulated medium into the collection space 34, it drives the cover 33 to extend so as to collect and accommodate the accumulated medium in the collection space 34.

[0074] When not in use, the collection component 3 can be disassembled, and the accumulated medium can be poured out by opening the cover 33.

[0075] The door 33 can be driven in various ways, such as motor drive, linkage drive, etc., which are all conventional technical means and are not limited here.

[0076] As another feasible approach, the contact surface between the well section and the collection component 3 is a self-controlled movable baffle. When the accumulated medium in the well section does not reach the preset value, the movable baffle closes the connection between the well section and the collection component. When the accumulated medium in the well section reaches or exceeds the preset value, the movable baffle is flipped by PLC control to open the connection between the well section and the collection component. This setting can ensure the normal flow of water in the collection well and achieve the purpose of cleaning the accumulated medium.

[0077] All of the above methods can be implemented, and no particular method is specified here.

[0078] As one feasible approach, a manhole cover is installed on top of the collection pool. By adjusting the opening and closing degree of the manhole cover, the water collection end of the collection pool can be opened or closed. Furthermore, the manhole cover can be telescopic, capable of moving along its length and / or width. The drive component that drives its movement is connected to a controller, which controls the working state of the drive component to open or close the water collection end.

[0079] Similarly, the top of the seepage well is equipped with a similarly functional openable and closable well cover, which is controlled by a controller to open or close the seepage well.

[0080] Similarly, the cleaning mechanism 2 is connected to the controller and is activated under the control of the controller to clean the well section.

[0081] In addition, the controller is electrically connected to the valve, which is installed on the first and second water collection pipes connected to the lower part of the collection pool. Under the control of the controller, the valve opens or closes to open or close the pipe connection. Preferably, the valve is a one-way valve, so that when the valve is open, rainwater flows unidirectionally to the target water collection pipe and can prevent water from flowing back to the collection well at the other end of the target water collection pipe.

[0082] Secondly, this application provides a rainwater collection device, combined with Figure 2 As shown, the device includes: an opening module 10, an acquisition module 20, a calculation module 30, and an opening / closing module 40.

[0083] The activation module 10 is used to activate the water collection end of the water collection well at the start of rainfall.

[0084] The acquisition module 20 is used to acquire the current time and the start time of rainfall.

[0085] The calculation module 30 is used to calculate the difference between the current time and the start time of the rainfall to obtain the duration of the rainfall.

[0086] The opening / closing module 40 is used to connect the corresponding water collection pipeline and / or seepage well based on the comparison between the rainfall duration and the set threshold, and to activate the cleaning mechanism when the content of the accumulated medium in the water collection well exceeds the preset value.

[0087] Thirdly, this application provides a rainwater collection system, which includes: a collection well, the top of which is a collection end, the bottom of which is connected to an infiltration well, the lower part of which is connected to a sewage network and / or a sewage treatment system through a first collection pipe, and the lower part of which is also connected to a rainwater network through a second collection pipe; the top of the infiltration well is provided with an openable infiltration well cover.

[0088] This application provides a rainwater collection system. The top of the collection well is the water collection end, and the bottom of the collection well is connected to an infiltration well. The connection channel between the infiltration well and the collection well is opened by opening the infiltration well cover. At the bottom of the collection well, a first collection pipe connects to a sewage network and / or a sewage treatment system, and a second collection pipe connects to a rainwater network, so as to realize the classified discharge of rainwater into different pipelines.

[0089] In conjunction with the third aspect, the water collection end of the water collection well is equipped with a hinged cover, which can be adjusted to open or close the water collection end.

[0090] In conjunction with the third aspect, the water collection well includes multiple well sections 1, which are arranged along the height direction of the water collection well; each well section 1 is provided with a filter mechanism on the adjacent end face of other well sections 1, and the diameter of the through holes on the multiple filter mechanisms gradually decreases from top to bottom along the height direction of the water collection well; each well section 1 is provided with a cleaning mechanism on its end face.

[0091] The well pool is divided into multiple well sections 1. Each well section 1 is equipped with a filter mechanism with through holes at its adjacent end faces to block the accumulation of media in the rainwater. Rainwater flows into the well section below through the through holes, which is beneficial for the effective interception of pollutants and the acquisition of rainwater with less impurities. Since the aperture of the through holes on each filter mechanism gradually decreases from top to bottom along the height direction, it is possible to collect accumulation media (such as silt) of different sizes in layers. A cleaning mechanism 2 is installed at the end face of well section 1 to clean the well section.

[0092] In conjunction with the third aspect, each well section is provided with a detachable collection component 3 at its end face, and the collection component 3 is located at the end of the stroke of the cleaning mechanism 2.

[0093] In this way, after cleaning the well section, the cleaning mechanism 2 pushes the accumulated medium along the preset stroke to the end of the stroke. At this time, the accumulated medium is pushed into the collection component 3 for collection.

[0094] Especially in rainwater collection systems in sandy soil areas, a lot of sand and soil is washed into the collection wells after rainfall, which can easily cause blockages and requires timely cleaning. In addition, each filter mechanism is equipped with through holes of different diameters, which can separate the mud and sand into different sections according to particle size, so as to facilitate subsequent sand and soil classification and treatment.

[0095] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0096] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0097] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0098] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0099] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A rainwater harvesting method, characterized in that, The method includes: At the onset of rainfall, open the water collection end of the sump; Get the current time and the start time of rainfall; Calculate the difference between the current time and the rainfall start time to obtain the rainfall duration; Based on the comparison between the rainfall duration and the set threshold, the corresponding water collection pipeline and / or seepage well are opened, and the cleaning mechanism is activated when the content of the accumulated medium in the water collection well exceeds the preset value. The bottom of the water collection well is connected to a seepage well, and the lower part of the water collection well is connected to the sewage pipe network and / or sewage treatment system through a first water collection pipe. The lower part of the water collection well is also connected to the rainwater pipe network through a second water collection pipe. The step of activating the corresponding water collection pipeline based on the comparison between the rainfall duration and the set threshold includes: If t≤t c Connect the first water collection pipeline; If t>t c The first water collection pipeline is blocked, and the seepage well is opened and the second water collection pipeline is connected. Where t is the duration of rainfall, t c To set a threshold; The water collection well includes multiple well sections, and each well section has a detachable collection component at its end face. The collection component is located at the end of the stroke of the cleaning mechanism and is used to collect the accumulated medium cleaned by the cleaning mechanism; the method further includes: If there is no rainfall at present, disassemble the collection assembly to dump the cleaned-up accumulated medium; The method further includes: If there is no rainfall, shut off the water collection end of the water collection well, the water collection pipeline, and the seepage well.

2. The method according to claim 1, characterized in that, A filtration mechanism is provided at the bottom of each well section, and a cleaning mechanism is provided at the end face of each well section; The step of activating the cleaning mechanism when the content of the accumulated medium in the water collection well exceeds a preset value also includes: For each well section, when the accumulated medium in the well section reaches a preset value, the cleaning mechanism is activated to clean the well section.

3. A rainwater collection device, characterized in that, The apparatus uses the method as described in claim 1; the apparatus comprises: The activation module is used to activate the water collection end of the sump at the onset of rainfall. The acquisition module is used to obtain the current time and the start time of rainfall; The calculation module is used to calculate the difference between the current time and the rainfall start time to obtain the rainfall duration; The opening and closing module is used to connect the corresponding water collection pipeline and / or seepage well according to the comparison relationship between the rainfall duration and the set threshold, and to start the cleaning mechanism when the content of the accumulated medium in the water collection well exceeds the preset value.

4. A rainwater harvesting system, characterized in that, The system uses the method described in claim 1; the water collection system includes: a water collection well, the top of which is a water collection end, the bottom of which is connected to a seepage well, the lower part of which is connected to a sewage network and / or a sewage treatment system through a first water collection pipeline, and the lower part of which is also connected to a rainwater network through a second water collection pipeline; the top of the seepage well is provided with an openable and closable well cover.

5. The system according to claim 4, characterized in that, The water collection end of the water collection well is equipped with a hinged cover. The water collection end can be opened or closed by adjusting the opening and closing state of the hinged cover.

6. The system according to claim 4, characterized in that, The water collection well includes multiple well sections, which are arranged along the height direction of the water collection well; each well section is equipped with a filtration mechanism at its bottom, and the diameter of the through holes on the multiple filtration mechanisms gradually decreases from top to bottom along the height direction of the water collection well; each well section is equipped with a cleaning mechanism at its end face.

7. The system according to claim 4, characterized in that, Each well section is provided with a detachable collection assembly at its end face, the collection assembly being located at the end of the stroke of the cleaning mechanism.

Images