A system and method for coupling urban rainwater and flood water resources to recharge groundwater

Abstract

The present invention proposes a system and method for coupling urban rainwater and flood water resources to recharge groundwater, which belongs to the field of groundwater recharge technology. The system includes a roof rainwater recycling mechanism, a road rainwater recycling mechanism, a regulating tank, a rainwater purification mechanism, and a rainwater recharge mechanism. The present invention realizes the coupled collection of road rainwater and roof rainwater, and both the roof rainwater recycling mechanism and the road rainwater recycling mechanism have a flow abandonment function, so that the collected rainwater is relatively clean. Through further treatment by the rainwater purification mechanism, the water quality of the recharged rainwater can be improved, and the quality of groundwater recharge can be effectively guaranteed. The combination effect of each unit of this system is good, and it can realize the comprehensive collection of rainwater and the more scientific use of collected rainwater, which provides a new idea for the reuse of rainwater and flood water resources.

Description

Technical Field

[0001] The invention relates to the technical field of groundwater recharge, and in particular to a system and method for recharging groundwater by coupling urban rainwater and flood water resources. Background Art

[0002] The hardening of the ground in urban areas has changed the way of natural water circulation, resulting in permanent changes in the moisture content of the regional soil, greatly reducing the amount of groundwater formed by natural circulation, and wasting rainwater resources due to the lack of good utilization measures. The infiltration and recharge technology of rainwater allows ground rainwater to enter the soil through the permeable surface or directly enter the underground aquifer, thereby replenishing soil moisture and replenishing groundwater. Using rainwater to replenish groundwater resources (groundwater recharge) is the most economical method, which includes two parts, one is the collection and utilization of roof rainwater, and the other is the collection and utilization of ground rainwater.

[0003] Roof rainwater is relatively clean, with few impurities, silt and other pollutants. It can be discharged directly into the water storage system after discarding and simple filtration, and then treated for use.

[0004] The rainwater collected in the community and the park has good water quality, large runoff, and is easy to collect and use, which is an important way to collect and use rainwater. Using the roads in the community or park as the rain collection surface, there are no motor vehicles on such roads, the rainwater is less polluted, and the rainwater is relatively clean compared to other ground rainwater. Collecting this part of rainwater and recharging it for groundwater after pretreatment is a feasible implementation method.

[0005] However, the current rainwater utilization engineering measures in sponge cities focus more on rainwater collection and secondary reuse, and the rainwater collection and infiltration only stays at the surface of the soil, but rarely pays attention to the recharge and replenishment of groundwater by rainwater collection, which cannot truly realize the sponge utilization of rainwater. In addition, in the existing rainwater utilization engineering measures, the collection system combination effect is limited, and it is impossible to achieve comprehensive rainwater collection and more scientific utilization of collected rainwater. Summary of the invention

[0006] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention proposes a system and method for coupling urban rainwater and flood water resources to recharge groundwater.

[0007] The technical solution of the present invention to solve the technical problem is:

[0008] First, the technical solution proposes a system for coupling urban rainwater and flood water resources to recharge groundwater, including a roof rainwater recycling mechanism, a road rainwater recycling mechanism, a regulating tank, a rainwater purification mechanism and a rainwater recharge mechanism, wherein the roof rainwater recycling mechanism is used to collect roof rainwater; the road rainwater recycling mechanism is used to collect road rainwater; the rainwater purification mechanism is used to purify the collected rainwater, and the rainwater recharge mechanism is used to input the purified rainwater into the underground aquifer; the roof rainwater recycling mechanism and the road rainwater recycling mechanism are respectively connected to the regulating tank, and the regulating tank is used to store the collected rainwater; the regulating tank, the rainwater purification mechanism and the rainwater recharge mechanism are connected in sequence; the characteristics are:

[0009] The road surface rainwater recycling mechanism comprises a road rain collecting surface, a confluence ditch is arranged on one side of the road rain collecting surface for collecting rainwater flowing from the road rain collecting surface; the confluence ditch is connected to at least one set of discard boxes, and a filter is arranged between the discard box and the confluence ditch; the discard box is used to realize the initial discard of road surface rainwater; a discard port and a clean water port are arranged on both sides of the discard box, the discard port is connected to the sewage pipe network, the clean water port is connected to a clean water pipe, and the clean water pipe is connected to the regulating tank; a discard assembly is arranged in the discard box, and the discard assembly comprises a gate plate, which is slidably connected to the discard box to realize the opening and closing of the discard port; the inner wall of the discard box is connected to a base plate, a lever is hinged on the base plate, and a floating ball is connected to one end of the lever; a suspension rod is connected to the top of the gate plate, a sleeve is hinged on the top of the suspension rod, the other end of the lever freely passes through the sleeve, and the lever is slidably connected to the sleeve; when the floating ball moves up and down, it can drive the gate plate to move up and down.

[0010] Preferably, the roof rainwater recovery mechanism includes at least one group of sloped surfaces arranged on the flat roof of the building, a collecting bucket is arranged below the sloped surface, and the collecting bucket is connected with a rainwater purification mechanism arranged on the ground through a sewer pipe; the collecting bucket is a box structure with an opening on the top, and the right side surface of the collecting bucket is a flip plate with filter holes; the flip plate is movably connected to the collecting bucket to form a deformable structure that can switch from vertical to horizontal state; the flip plate is connected to a driving assembly for realizing the flipping of the flip plate; when the flip plate is in a horizontal state fastened to the top of the collecting bucket, a discharge port is formed on the right side of the collecting bucket, which is used to abandon the initial rainwater and intercept and clean up garbage; when the flip plate is in a vertical state blocking the discharge port, the collecting bucket forms a collecting bucket structure for collecting rainwater flowing down from the sloped surface.

[0011] Preferably, the rainwater purification mechanism adopts a rain garden, which includes a vegetation layer, a covering layer, a filler layer, a geotextile layer, a supporting layer and a drainage layer from top to bottom, and the drainage layer at the bottom is connected to the storage tank; the rainwater recharge mechanism includes a recharge well, and the storage tank is connected to the top of the recharge well.

[0012] Preferably, the flip plate is movably connected to the collecting bucket via a flip guide, the flip guide includes a flip support bracket, a support beam is provided on the top of the collecting bucket, one end of the flip support bracket is rotatably connected to the support beam; a slide rail is provided on the bottom surface of the flip plate, and the other end of the flip support bracket is slidably connected to the slide rail.

[0013] Preferably, the driving assembly includes a shaft rod rotatably connected to the collecting bucket, one end of the shaft rod passes through the collecting bucket and is connected to a driven gear, the driven gear is meshed with a power rack, the power rack is slidably connected to the outer wall of the collecting bucket, and one end of the power rack is connected to an electric push rod; the other end of the shaft rod is fixedly connected to a swing support rod, the other end of the swing support rod is rotatably connected to an ear seat, and the ear seat is fixedly connected to the bottom of the flip plate.

[0014] Preferably, when the flip plate is in a vertical state, the top of the flip plate is higher than the top surface of the collecting bucket to form an extension portion.

[0015] Preferably, the flip plate is divided into three parts as a whole, namely a guiding part, a filtering and intercepting part and a sealing part; the guiding part is used to divert rainwater flowing down the slope surface into the filtering and intercepting part; the filtering and intercepting part has a plurality of filter holes for filtering rainwater; the sealing part is used to close the discharge port.

[0016] Preferably, the flip guide member includes a sleeve and a sliding sleeve, and the sleeve and the sliding sleeve are connected as a whole via a connecting rod; the sliding sleeve has a sliding groove adapted to the sliding rail; the connecting rod is tilted, and when the flip plate is in a horizontal state, the position of the sliding sleeve is higher than the position of the sleeve; when the flip plate is in a vertical state, the position of the sliding sleeve is lower than the position of the sleeve.

[0017] Preferably, a guide seat is provided in the jettison box, the gate plate is slidably connected to the guide seat, and a sealing gasket is provided on one side of the gate plate.

[0018] Secondly, the technical solution also proposes a method for coupling urban rainwater and flood water resources to recharge groundwater, using the system for coupling urban rainwater and flood water resources to recharge groundwater, including the following steps:

[0019] S1: Installation and construction:

[0020] Install a roof rainwater recycling mechanism on an existing or newly built flat roof; construct a regulating tank, a rainwater purification mechanism, and a road surface rainwater recycling mechanism on the ground; construct a recharging well by drilling holes to form a rainwater recharging mechanism, and the bottom of the recharging well extends into the underground aquifer; connect the roof rainwater recycling mechanism and the road surface rainwater unit to the regulating tank, and the regulating tank, the rainwater purification mechanism, and the rainwater recharging mechanism are connected in sequence through pipelines;

[0021] S2: Rainwater Harvesting:

[0022] S21: Roof rainwater collection:

[0023] When it is not raining, the flip plate is in a horizontal position buckled on the top of the collecting bucket, and the discharge port is in an open position;

[0024] When it starts to rain, the initial rainwater falls on the slope surface. After being collected by the slope surface, the initial rainwater carries garbage and impurities and flows to the flip plate. After being filtered through the filter holes, it flows into the collection bucket. The garbage and impurities carried in the initial rainwater are intercepted above the filter holes. The filtered initial rainwater washes the bottom of the collection bucket. The garbage and impurities attached to the collection bucket are washed by the initial rainwater and discharged through the discharge port, realizing the abandonment of the initial rainwater. At the same time, the abandoned initial rainwater is used to clean the inside of the collection bucket.

[0025] When the initial rainwater is discarded, the flip plate is controlled to flip from the horizontal state to the vertical state, and the flip plate closes the discharge port; the clean rainwater in the middle and late stages flows into the collection bucket through the slope surface, and then is introduced from the roof to the regulating pool on the ground through the downpipe, completing the collection of roof rainwater;

[0026] S22: Road rainwater collection:

[0027] When it is not raining, under the gravity of the float, the gate is located above the flow outlet, and the flow outlet is open;

[0028] When it rains, the initial rainwater on the road's rainwater collection surface is collected in the confluence ditch, and the rainwater in the confluence ditch flows into the abandonment box after being filtered by the filter net; the initial rainwater is small in amount, and the initial rainwater is discharged to the sewage pipe network through the abandonment outlet, thus realizing the abandonment of the initial rainwater on the road surface; as the rainfall increases, the middle and late rainwater enters the abandonment box through the road's rainwater collection surface-confluence ditch, and the water inflow of the abandonment box is greater than the water outflow, and the water level in the abandonment box rises, thereby driving the float to move up. After the float moves up, the lever swings, driving the suspension rod to move down, thereby driving the gate to move down, and blocking the abandonment outlet. At this time, the rainwater in the abandonment box flows out from the clean water outlet and is discharged to the regulating tank for storage, thus completing the collection of rainwater on the road surface;

[0029] S3: Rainwater purification and recharging:

[0030] The rainwater collected by the roof rainwater recycling mechanism and the rainwater collected by the road rainwater recycling mechanism enter the regulating tank together. The rainwater in the regulating tank then enters the rainwater purification mechanism to complete further purification of the rainwater; the purified rainwater is introduced into the rainwater reinjection mechanism and input into the underground aquifer.

[0031] The above technical solution has the following advantages or beneficial effects:

[0032] 1. The present invention realizes the coupled collection of road rainwater and roof rainwater by designing a roof rainwater recycling mechanism, a road rainwater recycling mechanism, a rainwater purification mechanism and a rainwater recharging mechanism, and both the roof rainwater recycling mechanism and the road rainwater recycling mechanism have a flow abandonment function, so that the collected rainwater is relatively clean. Through further treatment by the rainwater purification mechanism, the water quality of the recharged rainwater can be improved, and the quality of groundwater recharge can be effectively guaranteed. The combination effect of each unit of the system is good, which can realize the comprehensive collection of rainwater and the more scientific use of collected rainwater, and provide a new idea for the reuse of rainwater resources.

[0033] 2. The roof rainwater recycling mechanism of the present invention adopts the structural form of a collection bucket and a flip plate. By flipping the flip plate, it can switch between horizontal and vertical states. When the flip plate is in the horizontal state, it is used to divert and discard the initial rainwater, and intercept the garbage sliding down the slope surface, playing a filtering and blocking role, reducing the dirt and grime inside the collection bucket; when the flip plate is in the vertical state, the discharge port is closed, so that the collection bucket forms a collection bucket structure for receiving rainwater. In addition, when the flip plate is flipped from horizontal to vertical, the garbage and impurities intercepted on the surface of the flip plate can be dumped down, realizing the self-cleaning of the flip plate.

[0034] 3. The rainwater purification mechanism in the present invention adopts a rainwater garden structure. The purification process is ecological, environmentally friendly, and effective. It can effectively control the water quality of the recharge water source, thereby effectively preventing blockage problems.

[0035] 4. The road rainwater recycling mechanism of the present invention uses the road in the community or park as the rainwater collecting surface to form a road rainwater collecting surface. The rainwater on such a rainwater collecting surface is less polluted and relatively clean. It is also equipped with a discard box, which is equipped with a discard assembly to achieve the discard of initial rainwater, laying the foundation for the subsequent reduction of purification pressure. In addition, compared with the traditional volumetric discard device, this discard device has the advantages of small footprint; compared with the semi-volumetric discard device, the control diversion component is simpler and more flexible; compared with the swirl type, flap type, and switching jump well type discard devices, the discard control accuracy is higher, and the later clean rainwater resources can be utilized to the greatest extent; compared with the electronically controlled discard device, it can save costs and reduce the frequency of operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 It is a structural schematic diagram of the groundwater recharge system proposed by the present invention.

[0038] Figure 2 yes Figure 1 Structural cross-section view of the rainwater purification mechanism.

[0039] Figure 3 yes Figure 1 A partial enlarged view of the rainwater recovery mechanism on the roof.

[0040] Figure 4 yes Figure 3 Schematic diagram of the structure of the collecting bucket.

[0041] Figure 5 This is a schematic diagram of the structure of the flip board during the flipping process. Figure 1 .

[0042] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of the Y region in the middle.

[0043] Figure 7 This is a schematic diagram of the structure of the flip board during the flipping process. Figure 2 .

[0044] Figure 8 yes Figure 7 The structural stereogram of the middle flip support frame after enlargement.

[0045] Fig. 9 yes Figure 5 The structural front view of the middle flip plate during the flipping process.

[0046] Fig.10 It is the main structural view of the flip plate in the vertical state.

[0047] Fig.11 It is the main structural view when the flip plate is in the horizontal state.

[0048] Fig.12 It is a three-dimensional diagram of the flip plate in the vertical state.

[0049] Fig.13 It is a structural diagram of the roof rainwater recycling mechanism during the initial rainwater discharge.

[0050] Fig.14It is a schematic diagram of the pavement recycling unit.

[0051] Fig.15 It is a cross-sectional view of the internal structure of the jettison box (with the jettison port open).

[0052] Fig.16 It is a cross-sectional view of the internal structure of the jettison box (with the jettison port closed).

[0053] Fig.17 This is a magnified schematic diagram of the Q region structure.

[0054] Fig.18 This is a magnified schematic diagram of the M region structure.

[0055] Fig.19 It is a side view with the jettison port open.

[0056] Fig. 20 It is a structural schematic diagram of the pavement recovery unit when it is working.

[0057] Description of reference numerals:

[0058] a-Main building;

[0059] b-roof rainwater recovery mechanism; b1-photovoltaic bracket; b2-solar panel; b3-collection bucket; b31-connector pipe; b32-discharge port; b33-support beam; b331-installation slot; b4-turnover plate; b41-guide part; b42-filter interception part; b43-blocking part; b5-swing support rod; b6-ear seat; b7-shaft rod; b8-slide rail; b9-turnover support bracket; b91-sleeve; b92-connecting rod; b93-slide sleeve; b931-slide slot; b71-driven gear; b72-power rack; b73-electric push rod; b74-boss;

[0060] c-rainwater purification mechanism; c100-vegetation layer; c200-covering layer; c300-filling layer; c400-geotextile layer; c500-supporting layer; c600-drainage layer;

[0061] d-Rainwater recharging mechanism;

[0062] e1-regulating tank; e2-downpipe;

[0063] k-storage pool;

[0064] v0-road rainwater recycling mechanism; v-discard box; v1-sewage pipe network; v2-clean water pipe; v3-road rainwater collection surface; v4-confluence ditch; v5-filter screen;

[0065] u1-base plate; u2-lever; u3-float; u4-casing; u5-suspender rod; u6-gate; u7-guide seat; u8-sealing pad. DETAILED DESCRIPTION

[0066] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0068] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0069] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0070] Embodiment 1:

[0071] like Figure 1-Figure 20 As shown, this embodiment proposes a system for coupling urban rainwater and flood water resources to recharge groundwater, including a roof rainwater recycling mechanism b, a road rainwater recycling mechanism v0, a regulating tank e1, a rainwater purification mechanism c and a rainwater recharge mechanism d, wherein the roof rainwater recycling mechanism b is used to collect roof rainwater; the road rainwater recycling mechanism v0 is used to collect road rainwater; the rainwater purification mechanism c is used to purify the collected rainwater; the rainwater recharge mechanism d is used to input the purified rainwater into the underground aquifer; the roof rainwater recycling mechanism b and the road rainwater recycling mechanism v0 are respectively connected to the regulating tank e1, and the regulating tank e1 is used to store the collected rainwater; the regulating tank e1, the rainwater purification mechanism c, and the rainwater recharge mechanism d are connected in sequence.

[0072] If necessary, a storage tank k can be set between the rainwater purification mechanism c and the rainwater recharging mechanism d to play a role in storage and regulation.

[0073] The following is a further explanation of each of the above parts:

[0074] Part 1, Road Rainwater Recycling Mechanism v0:

[0075] The road surface rainwater recycling mechanism v0 includes a road rainwater collecting surface v3, and a confluence ditch v4 is arranged on one side of the road rainwater collecting surface v3 for collecting rainwater flowing from the road rainwater collecting surface v3; the confluence ditch v4 is connected to at least one set of discard boxes v, and a filter net v5 is arranged between the discard box v and the confluence ditch v4 for intercepting and filtering; the discard box v is used to realize the initial discard of road surface rainwater to ensure that relatively clean rainwater can be collected later; a discard port and a clean water port are arranged on both sides of the discard box v, and the discard port is connected to the sewage network v1 to discharge the relatively dirty initial rainwater into the sewage pipe; the clean water port is connected to a clean water pipe v2 for diverting relatively clean mid- and late-stage rainwater, and the clean water pipe v2 is connected to the regulating tank e1; the regulating tank e1 plays a temporary storage role and can perform sedimentation, diversion regulation, etc. A discard flow assembly is provided in the discard flow box v, and the discard flow assembly includes a gate u6, which is slidably connected to the discard flow box v to realize the opening and closing of the discard flow port; the inner wall of the discard flow box v is connected to a base plate u1, a lever u2 is hinged on the base plate u1, and one end of the lever u2 is connected to a float u3; the top of the gate u6 is connected to a suspension rod u5, and the top of the suspension rod u5 is hinged to a sleeve u4, the other end of the lever u2 freely passes through the sleeve u4, and the lever u2 is slidably connected to the sleeve u4; when the float u3 moves up and down, it can drive the gate u6 to move up and down.

[0076] In order to facilitate the up and down movement of the gate u6, a guide seat u7 is provided in the jettison box v, and the gate u6 is slidably connected to the guide seat u7. A sealing gasket u8 is provided on one side of the gate u6 for sealing.

[0077] In this embodiment, the overall size of the flow abandonment device can be designed with reference to the design size of the rainwater gratings on both sides of the road. In order to place the flow abandonment box v in the water collection well, the length and width of the device should be slightly smaller than the inner length and inner width of the water collection well. Therefore, in this embodiment, the length and width of the flow abandonment box v are 650 mm and 350 mm respectively; the height of the flow abandonment device needs to be smaller than the height of the water collection well. In this embodiment, the height of the device is 550 mm, and the distance between the bottom of the overflow port and the bottom of the device is set to 450 mm. At the same time, in order to prevent the silt from clogging the flow abandonment port, a certain distance is set between the bottom of the flow abandonment port and the bottom of the device, and this distance is 50 mm.

[0078] In the present invention, the road rainwater recycling mechanism v0 uses the road in the community or park as the rainwater collection surface to form a road rainwater collection surface v3. The rainwater on such a rainwater collection surface is less polluted and relatively clean. It is also equipped with a discard box v, which is equipped with a discard assembly to achieve the discard of initial rainwater, laying the foundation for the subsequent reduction of purification pressure. In addition, compared with the traditional volumetric discard device, this discard device has the advantages of small footprint; compared with the semi-volumetric discard device, the control diversion component is simpler and more flexible; compared with the swirl type, flap type, and switching jump well type discard devices, the discard control accuracy is higher, and the later clean rainwater resources can be utilized to the greatest extent; compared with the electronically controlled discard device, it can save costs and reduce the frequency of operation and maintenance.

[0079] Part II: Roof rainwater recycling mechanism b:

[0080] The roof rainwater recycling mechanism b in this embodiment is suitable for the building main body a structure with a flat roof, which can be an existing flat roof or a newly built flat roof. The roof rainwater recycling mechanism b includes at least one set of sloped surfaces arranged on the flat roof of the building, and a collecting bucket b3 is arranged below the sloped surface. The collecting bucket b3 is connected to the rainwater purification mechanism c arranged on the ground through the downpipe e2; the collecting bucket b3 is a box structure with an opening on the top, and the collecting bucket b3 has five surfaces, namely the bottom surface, the left side surface, the right side surface, the front side surface, and the rear side surface; the right side surface of the collecting bucket b3 is a reversible flip plate b4, and the flip plate b4 has filter holes for rainwater to enter the collecting bucket b3; the flip plate b4 is movably connected to the collecting bucket b3 to form a deformable structure that can switch from vertical to horizontal state; the flip plate b4 can be flipped, from horizontal to vertical, and from vertical to horizontal.

[0081] When the flip plate b4 is in a horizontal state fastened to the top of the collecting bucket b3, a discharge port b32 is formed on the right side of the collecting bucket b3, which is used to discard the initial rainwater and intercept and clean up the garbage; when the flip plate b4 is in a vertical state blocking the discharge port b32, the collecting bucket b3 forms a collecting bucket b3 structure, which is used to collect rainwater flowing down from the slope surface.

[0082] The flip plate b4 is connected with a driving assembly for realizing the flipping of the flip plate b4. By manipulating the driving assembly, the motion control of the flip plate b4 can be realized remotely.

[0083] It should be noted that, in this embodiment, the slope surface can be constructed separately, or existing photovoltaic component components can be directly used to reduce costs and integrate the use of resources. In this embodiment, the slope surface is composed of photovoltaic components, which include photovoltaic brackets b1 arranged on the roof, and solar panels b2 are installed on the photovoltaic brackets b1. The solar panels b2 are arranged at an angle, and the upper surface of the solar panels b2 forms a slope surface for collecting water. When it is not raining, the solar panels b2 are used to collect light energy, and when it is raining, the solar panels b2 are used to collect rainwater, realizing the multifunctional use of the solar panels b2.

[0084] The collecting bucket b3 is connected to a joint pipe b31, which is connected to the sewer pipe e2. The pipe mouth of the joint pipe b31 is higher than the inner bottom of the collecting bucket b3, and a certain distance is left between the two. The purpose of this setting is to prevent initial rainwater from flowing into the joint pipe b31.

[0085] The specific setting method of the flip board b4 is as follows:

[0086] The flip plate b4 is movably connected to the collecting bucket b3 through a flip guide, and the flip guide includes a flip support bracket b9. A support beam b33 is provided on the top of the collecting bucket b3, and one end of the flip support bracket b9 is rotatably connected to the support beam b33; a slide rail b8 is provided on the bottom surface of the flip plate b4, and the other end of the flip support bracket b9 is slidably connected to the slide rail b8. In this embodiment, the middle position of the support beam b33 is concave to form an installation groove b331, and the installation groove b331 is used to install the flip support bracket b9.

[0087] In this embodiment, the flip guide member includes a sleeve b91 and a sliding sleeve b93, and the sleeve b91 and the sliding sleeve b93 are connected as a whole through a connecting rod b92; the sliding sleeve b93 has a sliding groove b931 adapted to the sliding rail b8; the connecting rod b92 is tilted, and when the flip plate b4 is in a horizontal state, the position of the sliding sleeve b93 is higher than the position of the sleeve b91; when the flip plate b4 is in a vertical state, the position of the sliding sleeve b93 is lower than the position of the sleeve b91.

[0088] The drive components mentioned above adopt the following structure:

[0089] The driving assembly includes a shaft b7 rotatably connected to the collecting bucket b3, one end of the shaft b7 penetrates the collecting bucket b3 and is connected to a driven gear b71, the driven gear b71 is meshed with a power rack b72, the power rack b72 is slidably connected to the outer wall of the collecting bucket b3, and one end of the power rack b72 is connected to an electric push rod b73; the other end of the shaft b7 is fixedly connected to a swing support rod b5, the other end of the swing support rod b5 is rotatably connected to an ear seat b6, and the ear seat b6 is fixedly connected to the bottom of the flip plate b4. In this embodiment, a boss b74 is fixedly connected to the outer wall of the collecting bucket b3, the power rack b72 is slidably connected to the boss b74, and the electric push rod b73 is installed on the outer wall of the collecting bucket b3. The electric push rod b73 is connected to a controller, and the telescopic control of the electric push rod b73 can be achieved by operating the controller.

[0090] The roof rainwater recycling mechanism designed in this embodiment adopts the structural form of the collection bucket b3 and the flip plate b4. By flipping the flip plate b4, it can switch between the horizontal and vertical states. When the flip plate b4 is in the horizontal state, it is used to realize the diversion and abandonment of the initial rainwater, and intercept the garbage sliding down from the slope surface, play a filtering and blocking role, and reduce the dirt and grime inside the collection bucket b3; when the flip plate b4 is in the vertical state, the discharge port b32 is closed, so that the collection bucket b3 forms a collection bucket b3 structure for receiving rainwater. In addition, when the flip plate b4 is flipped from the horizontal to the vertical, the garbage and impurities intercepted on the surface of the flip plate b4 can be dumped down, realizing the self-cleaning of the flip plate b4.

[0091] In addition, a raindrop sensor can be set to detect whether it is raining. When in use, the raindrop sensor is connected to the controller. When it rains, the raindrop sensor sends a signal to the controller. After receiving the signal, the controller controls the electric push rod b73 to move after T time to achieve the flipping of the flip plate b4. T is a parameter set in the controller in advance, which is used to reserve the time for the initial rainwater to be discarded.

[0092] As a feasible embodiment, when the flip plate b4 is in a vertical state, the top of the flip plate b4 is higher than the top surface of the collecting bucket b3, forming an extension portion. At this time, the extension portion mainly plays a blocking role. The initial rain volume is small, while the mid-term rain volume is large. At this time, rainwater with a fast flow rate and a large flow rate will form on the slope surface. If the flow rate is large, the extension portion can play a good water blocking role, preventing relatively clean rainwater from failing to enter the collecting bucket b3 smoothly. With this extension portion, this problem can be well solved.

[0093] The flip plate b4 is divided into three parts, namely the guide part b41, the filter interception part b42 and the plugging part b43; the guide part b41 is used to guide the rainwater flowing down the slope surface to the filter interception part b42; the filter interception part b42 has a plurality of filter holes for filtering the rainwater; the plugging part b43 is used to seal the discharge port b32. The guide part b41 and the extension part are the same part, the guide part b41 mainly uses the upper surface of the flip plate b4, and the extension part mainly uses the lower surface of the flip plate b4.

[0094] Part 4: About rainwater purification mechanism c:

[0095] In this embodiment, the front end of the rainwater purification mechanism c is connected to a regulating tank e1, and the regulating tank e1 is connected to the collecting bucket b3 through a downpipe e2, so as to temporarily store rainwater. In this embodiment, the rainwater purification mechanism c adopts a rain garden, which includes a vegetation layer c100, a covering layer c200, a filling layer c300, a geotextile layer c400, a supporting layer c500 and a drainage layer c600 from top to bottom, wherein plants are planted in the filling layer c300 and a vegetation layer c100 is formed above the covering layer c200. The filling layer c300 includes natural bags, zeolite, vermiculite and residual sludge from a water plant. The natural bags are composed of soil, river sand and peat soil. The mass ratio of soil, river sand and peat soil in the natural bags can be (40-50): (30-40): (10-20); the covering layer c200 includes wood blocks and bark, and the mass ratio can be selected to be 1: (1.0-2 .0) wood blocks are mixed evenly with bark and then covered on the filler layer c300, which not only makes the cover layer c200 have certain water retention, water absorption and permeability, but also can avoid soil erosion of the filler layer c300 and provide nutrients for plant growth. The residual sludge of the water plant contains more elements such as iron and aluminum, and has a relatively strong adsorption capacity for phosphorus. Using the residual sludge of the water plant in the filler layer c300 of the rain garden will not only not affect plant growth, but also make the filler layer c300 have a better and lasting dephosphorization effect. In the present invention, the rain garden does not need to set up a separate planting soil layer. By mixing soil, river sand, peat soil, zeolite, vermiculite and residual sludge of the water plant as the filler layer c300, it can not only meet the growth of plants, but also effectively remove pollutants such as suspended matter, ammonia nitrogen and phosphorus in rainfall runoff.

[0096] In this embodiment, the plants are preferably plant species that can effectively remove nutrients such as nitrogen and phosphorus, such as one or more selected from honeysuckle, dwarf crape myrtle, Abelia oleifera, Amorpha fruticosa, Pennisetum, blue fescue, and Suaeda salsa.

[0097] The residual sludge from the water plant contains more elements such as iron and aluminum, which have a strong adsorption capacity for phosphorus. Using the residual sludge from the water plant in the filler layer c300 of the rain garden can make the filler layer c300 have a better and lasting dephosphorization effect; and, as a natural non-toxic mineral, vermiculite has good cation exchange and adsorption properties, which can not only improve the structure of the soil, store water and retain moisture, increase the permeability and water content of the soil, but also remove ammonia nitrogen, phosphates, rare earth ions and organic pollutants in the water body; zeolite has the function of retaining water and fertilizer, and its surface is positively charged, rough and porous, and has a strong ability to adsorb ammonia nitrogen. Through ion exchange, the removal rate of ammonia nitrogen can reach more than 95%.

[0098] The residual sludge from the waterworks is dehydrated dry sludge, which can be ground into powder with a particle size not greater than 0.5 mm, and the particle size of vermiculite is controlled to be 0.01-0.06 mm, and the particle size of zeolite is 5-10 mm. This not only ensures a more uniform mixing of natural bag, zeolite, vermiculite and residual sludge from the waterworks, but also is more conducive to the release of nutrients and allows each component in the filler layer c300 to fully contact with rainwater, which is more conducive to plant growth and can achieve better rainwater purification effects.

[0099] The supporting layer c500 mainly plays the function of supporting and draining, which can prevent the loss of other fillers and play the role of rapid drainage. Specifically, the supporting layer c500 in the present invention can be a gravel layer, the particle size of the gravel can be 10-20mm, and the thickness of the supporting layer c500 can be 200-300mm, thereby not only achieving a better supporting effect, but also not affecting the drainage effect.

[0100] Part V, Rainwater Recharge Mechanism d:

[0101] The rainwater recharge mechanism d is a recharge well, which includes a skeleton pipe, and clay is filled around the top 1 / 5 of the skeleton pipe mouth, and gravel is filled around the top 1 / 5 of the skeleton pipe to the bottom 1 / 10 of the bottom pipe mouth, and then the filter is wrapped around the bottom pipe mouth. The bottom of the filter is a sand settling section. This part can adopt a conventional structure.

[0102] Application results:

[0103] The present invention realizes the abandonment of initial rainwater by designing a roof rainwater recycling mechanism, a rainwater purification mechanism c and a rainwater recharging mechanism d, so that the collected rainwater is relatively clean. Through further treatment by the rainwater purification mechanism c, the water quality of the recharged rainwater can be improved, and the quality of groundwater recharge can be effectively guaranteed. The present invention constructs a feasible artificial recharge and recharge technology system, which can maintain or improve the recharge efficiency of artificial recharge projects and reduce the risk of blockage by organically integrating and connecting various aspects of artificial recharge, so as to prolong the time for artificial recharge to maintain high-efficiency recharge, thereby increasing the amount of recharged water.

[0104] Embodiment 2:

[0105] This embodiment also proposes an artificial groundwater recharge method based on rooftop rainwater collection, using the system for recharging groundwater by coupling urban rainwater and flood water resources, including the following steps:

[0106] S1: Installation and construction:

[0107] Install a roof rainwater recycling mechanism b on an existing or newly built flat roof; construct a regulating pool e1, a rainwater purification mechanism c, and a road surface rainwater recycling mechanism v0 on the ground; construct a recharging well by drilling holes to form a rainwater recharging mechanism d, and the bottom of the recharging well extends into the underground aquifer; connect the roof rainwater recycling mechanism b and the road surface rainwater unit to the regulating pool e1, and the regulating pool e1, the rainwater purification mechanism c, and the rainwater recharging mechanism d are connected in sequence through pipelines;

[0108] S2: Rainwater Harvesting:

[0109] S21: Roof rainwater collection:

[0110] When it is not raining, the flip plate b4 is in a horizontal position buckled on the top of the collecting bucket b3, and the discharge port is in an open position;

[0111] When it starts to rain, the initial rainwater falls on the slope surface, and after being collected by the slope surface, the initial rainwater carries garbage and impurities and flows to the flip plate b4, and flows into the collection bucket b3 after being filtered through the filter holes; the garbage and impurities carried in the initial rainwater are intercepted above the filter holes; the filtered initial rainwater washes the inner bottom of the collection bucket b3, and the garbage and impurities attached to the collection bucket b3 are washed by the initial rainwater and discharged through the discharge port, realizing the abandonment of the initial rainwater, and at the same time, the abandoned initial rainwater is used to clean the inside of the collection bucket b3;

[0112] When the initial rainwater is discarded, the flip plate b4 is controlled to flip from the horizontal state to the vertical state, and the flip plate b4 closes the discharge port b32; the clean rainwater in the middle and late stages flows into the collection bucket b3 through the slope surface, and then is introduced from the roof to the regulating tank e1 on the ground through the downpipe e2, completing the collection of roof rainwater;

[0113] S22: Road rainwater collection:

[0114] When it is not raining, under the gravity of the float u3, the gate u6 is located above the flow abandonment port, and the flow abandonment port is in an open state;

[0115] When it rains, the initial rainwater from the road rainwater collecting surface v3 is collected in the confluence ditch v4, and the rainwater in the confluence ditch v4 flows into the abandonment box v after being filtered by the filter net v5; the initial rainwater is small in amount, and the initial rainwater is discharged to the sewage pipe network through the abandonment outlet, so as to abandon the initial rainwater on the road surface; as the rainfall increases, the middle and late rainwater enters the abandonment box v through the road rainwater collecting surface v3-confluence ditch v4, and the water inflow of the abandonment box v is greater than the water outflow, and the water level in the abandonment box v rises, thereby driving the float u3 to move up. After the float u3 moves up, the lever u2 swings, driving the suspension rod u5 to move down, and then driving the gate u6 to move down, and the abandonment outlet is blocked. At this time, the rainwater in the abandonment box v flows out from the clean water outlet and is discharged to the regulating tank e1 for storage, thus completing the collection of rainwater on the road surface;

[0116] The road surface rainwater recycling mechanism v0 of the present invention has a simple structure and is easy to operate, saves costs and has a low frequency of operation and maintenance. It can not only ensure the water quality of overflow rainwater after abandonment, but also minimize the amount of abandoned water.

[0117] S3: Rainwater purification and recharging:

[0118] The rainwater collected by the roof rainwater recycling mechanism b and the rainwater collected by the road rainwater recycling mechanism v0 enter the regulating tank e1 together. The rainwater in the regulating tank e1 then enters the rainwater purification mechanism c to complete further purification of the rainwater; the purified rainwater is introduced into the rainwater reinjection mechanism d and input into the underground aquifer.

[0119] The present invention can ensure that rainwater is properly disposed of, and according to the collection, utilization and infiltration and recharging conditions, reduce the problem of rainwater discharge, alleviate urban flood disasters, and reduce the situation of instantaneous increase in rainfall to form flood peaks. Rainwater collection can alleviate the water pressure of municipal pipelines and reduce the possibility of floods.

[0120] The present invention provides scientific support for improving the groundwater artificial recharge and infiltration enhancement technology system. It not only helps to promote and apply artificial recharge technology to increase regional groundwater resource reserves and reduce the negative impact of groundwater overexploitation, but also has important practical application value in improving water resource utilization efficiency and formulating sustainable water resource management strategies.

[0121] Although the above describes the specific implementation mode of the invention in conjunction with the drawings, it is not intended to limit the scope of protection of the invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. A system for coupling urban rainwater and flood water resources to recharge groundwater, comprising a roof rainwater recycling mechanism (b), a road rainwater recycling mechanism (v0), a regulating tank (e1), a rainwater purification mechanism (c) and a rainwater recharge mechanism (d), wherein the roof rainwater recycling mechanism (b) is used to collect roof rainwater; the road rainwater recycling mechanism (v0) is used to collect road rainwater; the rainwater purification mechanism (c) is used to purify the collected rainwater, and the rainwater recharge mechanism (d) is used to input the purified rainwater into an underground aquifer; the roof rainwater recycling mechanism (b) and the road rainwater recycling mechanism (v0) are respectively connected to the regulating tank (e1), and the regulating tank (e1) is used to store the collected rainwater; the regulating tank (e1), the rainwater purification mechanism (c) and the rainwater recharge mechanism (d) are connected in sequence; characterized in that: The roof rainwater recycling mechanism (b) comprises at least one set of sloped surfaces arranged on the flat roof of the building, a collecting bucket (b3) is arranged below the sloped surface, the collecting bucket (b3) is connected to a joint pipe (b31), the joint pipe (b31) is connected to a downpipe (e2), and the pipe opening of the joint pipe (b31) is higher than the inner bottom of the collecting bucket (b3); the collecting bucket (b3) is connected to a rainwater purification mechanism (c) arranged on the ground through the downpipe (e2); The collecting hopper (b3) is a box structure with an opening at the top, and the right side of the collecting hopper (b3) is a flip plate (b4) that can be flipped; the flip plate (b4) is movably connected to the collecting hopper (b3) to form a deformable structure that can switch from a vertical state to a horizontal state; the flip plate (b4) is connected to a driving assembly for realizing the flipping of the flip plate (b4); the flip plate (b4) is divided into three parts as a whole, namely a guide part (b41), a filter interception part (b42) and a blocking part (b43); the guide part (b41) is used to realize the diversion of rainwater flowing down the slope surface to the filter interception part (b42); the filter interception part (b42) has a plurality of filter holes; the blocking part (b43) is used to realize the sealing of the discharge port (b32); When the flip plate (b4) is in a horizontal state buckled on the top of the collecting bucket (b3), a discharge port (b32) is formed on the right side of the collecting bucket (b3). When it starts to rain, initial rainwater falls on the slope surface. After being collected by the slope surface, the initial rainwater carries garbage and impurities and flows to the flip plate (b4). After being filtered by the filter holes, the initial rainwater flows into the collecting bucket (b3). The garbage and impurities carried in the initial rainwater are intercepted above the filter holes. The filtered initial rainwater washes the inner bottom of the collecting bucket (b3). The garbage and impurities attached to the collecting bucket (b3) are washed by the initial rainwater and discharged through the discharge port (b32), thereby achieving the abandonment of the initial rainwater. At the same time, the abandoned initial rainwater is used to clean the inside of the collecting bucket (b3). When the flip plate (b4) is in a vertical position blocking the discharge port (b32), the flip plate (b4) closes the discharge port (b32); clean rainwater in the middle and late stages flows into the collection bucket (b3) through the slope surface, and is then introduced from the roof to the regulating tank (e1) on the ground through the downpipe (e2).

2. A system for coupling urban rainwater resources to recharge groundwater according to claim 1, characterized in that: The road surface rainwater recycling mechanism (v0) comprises a road rainwater collecting surface (v3), one side of the road rainwater collecting surface (v3) is provided with a confluence ditch (v4) for collecting rainwater flowing from the road rainwater collecting surface (v3); the confluence ditch (v4) is connected to at least one set of discard boxes (v), a filter net (v5) is provided between the discard box (v) and the confluence ditch (v4); the discard box (v) is used to achieve initial discard of road surface rainwater; a discard port and a clean water port are respectively provided on both sides of the discard box (v), the discard port is connected to a sewage pipe network (v1), the clean water port is connected to a clean water pipe (v2), and the clean water pipe (v2) is connected to a regulating tank (e1); a filter is provided in the discard box (v) A flow abandonment component is provided, which comprises a gate plate (u6), which is slidably connected to the flow abandonment box (v) to realize opening and closing of the flow abandonment port; the inner wall of the flow abandonment box (v) is connected to a base plate (u1), a lever (u2) is hinged on the base plate (u1), and one end of the lever (u2) is connected to a floating ball (u3); the top of the gate plate (u6) is connected to a suspension rod (u5), the top of the suspension rod (u5) is hinged to a sleeve (u4), the other end of the lever (u2) freely penetrates the sleeve (u4), and the lever (u2) is slidably connected to the sleeve (u4); when the floating ball (u3) moves up and down, it can drive the gate plate (u6) to move up and down.

3. A system for coupling urban rainwater resources to recharge groundwater according to claim 2, characterized in that: The rainwater purification mechanism (c) adopts a rain garden, which includes a vegetation layer (c100), a covering layer (c200), a filling layer (c300), a geotextile layer (c400), a supporting layer (c500) and a drainage layer (c600) from top to bottom, and the drainage layer (c600) at the bottom is connected to the storage tank (k); the rainwater recharge mechanism (d) includes a recharge well, and the storage tank (k) is connected to the top of the recharge well.

4. A system for coupling urban rainwater resources to recharge groundwater according to claim 3, characterized in that: The flip plate (b4) is movably connected to the collecting bucket (b3) via a flip guide, the flip guide comprises a flip support frame (b9), a support beam (b33) is provided on the top of the collecting bucket (b3), one end of the flip support frame (b9) is rotatably connected to the support beam (b33); a slide rail (b8) is provided on the bottom surface of the flip plate (b4), the other end of the flip support frame (b9) is slidably connected to the slide rail (b8).

5. A system for coupling urban rainwater resources to recharge groundwater according to claim 4, characterized in that: The driving assembly comprises a shaft rod (b7) rotatably connected to the collecting bucket (b3); one end of the shaft rod (b7) passes through the collecting bucket (b3) and is connected to a driven gear (b71); the driven gear (b71) is meshed with a power rack (b72); the power rack (b72) is slidably connected to the outer wall of the collecting bucket (b3); one end of the power rack (b72) is connected to an electric push rod (b73); the other end of the shaft rod (b7) is fixedly connected to a swing support rod (b5); the other end of the swing support rod (b5) is rotatably connected to an ear seat (b6); and the ear seat (b6) is fixedly connected to the bottom of the flip plate (b4).

6. A system for coupling urban rainwater resources to recharge groundwater according to claim 5, characterized in that: The flip support frame (b9) includes a sleeve (b91) and a sliding sleeve (b93), wherein the sleeve (b91) and the sliding sleeve (b93) are connected as a whole via a connecting rod (b92); the sliding sleeve (b93) has a sliding groove (b931) adapted to the sliding rail (b8); the connecting rod (b92) is tilted, and when the flip plate (b4) is in a horizontal state, the position of the sliding sleeve (b93) is higher than the position of the sleeve (b91); when the flip plate (b4) is in a vertical state, the position of the sliding sleeve (b93) is lower than the position of the sleeve (b91).

7. A system for coupling urban rainwater resources to recharge groundwater according to claim 6, characterized in that: A guide seat (u7) is provided in the jettison box (v), the gate plate (u6) is slidably connected to the guide seat (u7), and a sealing gasket (u8) is provided on one side of the gate plate (u6).

8. A method for coupling urban rainwater and flood water resources to recharge groundwater, characterized in that: The system for coupling urban rainwater and flood water resources to recharge groundwater according to claim 7 comprises the following steps: S1: Installation and construction: A rooftop rainwater recycling mechanism (b) is installed on an existing or newly built flat roof; a regulating tank (e1), a rainwater purification mechanism (c), and a road surface rainwater recycling mechanism (v0) are constructed on the ground; a recharging well is constructed by drilling holes to form a rainwater recharging mechanism (d), and the bottom of the recharging well extends into an underground aquifer; the rooftop rainwater recycling mechanism (b) and the road surface rainwater unit are connected to the regulating tank (e1), and the regulating tank (e1), the rainwater purification mechanism (c), and the rainwater recharging mechanism (d) are connected in sequence through pipelines; S2: Rainwater Harvesting: S21: Roof rainwater collection: When it is not raining, the flip plate (b4) is in a horizontal position fastened to the top of the collecting bucket (b3), and the discharge port (b32) is in an open position; When it starts to rain, the initial rainwater falls on the slope surface, and after being collected by the slope surface, the initial rainwater carries garbage and impurities and flows to the flip plate (b4), and after being filtered by the filter holes, flows into the inside of the collection bucket (b3); the garbage and impurities carried by the initial rainwater are intercepted above the filter holes; the filtered initial rainwater washes the bottom of the collection bucket (b3), and the garbage and impurities attached to the collection bucket (b3) are washed by the initial rainwater and discharged through the discharge port (b32), thereby realizing the abandonment of the initial rainwater, and at the same time, the abandoned initial rainwater is used to clean the inside of the collection bucket (b3); When the initial rainwater discharge is completed, the flip plate (b4) is controlled to flip, so that the flip plate (b4) flips from a horizontal state to a vertical state, and the flip plate (b4) closes the discharge port (b32); the clean rainwater in the middle and late stages flows into the collection bucket (b3) through the collection of the slope surface, and then is introduced from the roof to the regulating pool (e1) on the ground through the downpipe (e2), completing the collection of roof rainwater; S22: Road rainwater collection: When it is not raining, under the gravity of the float (u3), the gate (u6) is located above the flow abandonment port, and the flow abandonment port is in an open state; When it rains, the initial rainwater on the road rainwater collecting surface (v3) is collected in the confluence ditch (v4), and the rainwater in the confluence ditch (v4) is filtered by the filter net (v5) and flows into the waste flow box (v); the initial rainwater is small in amount, and the initial rainwater is discharged to the sewage pipe network (v1) through the waste flow outlet, so that the initial rainwater on the road surface is discarded; as the rainfall increases, the middle and late rainwater enters the waste flow box (v) through the road rainwater collecting surface (v3) and the confluence ditch (v4), the water inflow of the waste flow box (v) is greater than the water outflow, the water level in the waste flow box (v) rises, and then drives the float (u3) to move up, after the float (u3) moves up, the lever (u2) swings, drives the suspension rod (u5) to move down, and then drives the gate plate (u6) to move down, and blocks the waste flow outlet, at this time, the rainwater in the waste flow box (v) flows out from the clean water outlet, and is discharged to the regulating tank (e1) for storage, so that the collection of rainwater on the road surface is completed; S3: Rainwater purification and recharging: The rainwater collected by the roof rainwater recycling mechanism (b) and the rainwater collected by the road rainwater recycling mechanism (v0) enter the regulating tank (e1) together. The rainwater in the regulating tank (e1) then enters the rainwater purification mechanism (c) to complete further purification of the rainwater; the purified rainwater is introduced into the rainwater reinjection mechanism (d) and input into the underground aquifer.

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