CN106639180A - Rainwater collecting system for roof garden and construction method - Google Patents

Abstract

The invention mainly discloses a rainwater collection and storage system for roof gardens and a construction method thereof, including a roof, a water collection unit, a treatment unit, a water storage unit and a water use unit, and a gravel road paved with cobblestones is arranged on the roof As well as the first vegetation layer, the water collection unit includes rainwater collection buckets and water pipes arranged under the gravel road, the treatment unit includes landscape pools, sedimentation tanks and purifiers connected in sequence, and the water storage unit includes the first water storage tank and the second Cisterns, the first cistern is located on the roof and the second cistern is located under the house. The invention integrates roof construction, rainwater collection and treatment, and water use terminals into one, overall planning, effectively reduces the pollution of rainwater, protects the water body environment, realizes the collection, purification, storage and reuse of rainwater, and improves the utilization of water resources The efficiency can reduce the water pressure, and at the same time, it can make the maintenance and irrigation of the roof garden more convenient, reduce the energy of water delivery, and be more economical and environmentally friendly.

Description

A rainwater collection and storage system for roof gardens and its construction method

technical field

The invention relates to a rainwater collection and storage system for roof gardens and a construction method thereof.

Background technique

In the existing technology, rainwater harvesting should be called "rainwater harvesting and utilization system" in a complete way, which refers to the collection and utilization of rainfall runoff collected on the roof of buildings, roads, squares and other hardened surfaces. Water—storage and other channels accumulate rainwater, and provide rainwater replenishment for greening, landscape water bodies, washing and groundwater sources, so as to achieve the purpose of comprehensive utilization of rainwater resources and water conservation. The tap water supply in many cities and regions has been difficult to keep up with the pace of urbanization. Emerging water industries such as watering and greening the city, flushing roads and other public welfare water, and car washing have further increased the burden on tap water supply. However, during the heavy rain season every year, the flood of rainwater has caused great difficulties for urban drainage. The collection and utilization of rainwater just solved the two major problems brought to urban construction. The rainwater harvesting and utilization system has a wide range of meanings, such as slowing down urban rainwater floods and groundwater table decline, controlling rainwater runoff pollution, and improving urban ecological environment.

In daily life, the amount of rainwater accumulated on the roof cannot be underestimated. If this part of rainwater can be collected and reused, resources can be saved to a certain extent. The roof garden not only has excellent cooling and heat insulation effects, but also can beautify the environment, purify the air, improve the local microclimate, enrich the city's elevation landscape, and can compensate for the green ground occupied by buildings, greatly increasing the city's green coverage and improving people's health. It is a roof form worthy of vigorous promotion to improve living conditions and improve the quality of life. However, roof gardens require a lot of water and use a lot of water. Nowadays, with the increasing shortage of water resources, the pressure of maintaining roof gardens is relatively high, and the general water storage units are built underground in houses. When the upper buildings or roof gardens need water, they need to It takes a long distance to transport from the ground to the roof, consumes a lot of energy, and is inconvenient for irrigation.

Contents of the invention

The purpose of the present invention is to address the many deficiencies in the prior art, to provide a rainwater storage system for roof gardens and its construction method, which integrates roof construction, rainwater collection and treatment, and water terminals into one, making overall plans and effectively It reduces the pollution of rainwater, protects the water body environment, realizes the collection, purification, storage and reuse of rainwater, improves the utilization rate of water resources, and reduces water pressure. At the same time, it can make the maintenance and irrigation of roof gardens more convenient and reduce water delivery. Energy, more economical and environmentally friendly.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A rainwater storage system for roof gardens, including a roof, a water collection unit, a treatment unit, a water storage unit and a water unit. The roof is provided with a gravel road paved with cobblestones and the first vegetation layer, and the gravel road and The first vegetation layer is arranged in a staggered manner. The water collection unit includes rainwater collection buckets and water pipes. The rainwater collection buckets are arranged on the lower side of the gravel road at even intervals. The treatment unit includes landscape pools, sedimentation tanks and purifiers connected in sequence, and rainwater collection buckets It is connected to the landscape pool through a water pipe, and the purifier is connected to the water storage unit through a connecting pipe. The water storage unit includes a first water storage tank and a second water storage tank. below the house. The rainwater during rainfall and the excess rainwater in the first vegetation layer are collected through the rainwater collection bucket, and the rainwater collection bucket is designed under the gravel road paved with cobblestones, so that the rainwater is filtered through layers of pebbles before entering the rainwater collection bucket. , and then into the rainwater collection bucket to prevent large particles from clogging the rainwater collection bucket. The rainwater collected by the rainwater collection bucket enters the landscape pool through the water delivery pipe. Purify, and also provide water resources for the landscape pool, and then transport the excess purified water in the landscape pool to the sedimentation tank through the connecting pipe, and carry out the sedimentation reaction in the sedimentation tank to precipitate the impurities in the water for further purification, and then The water after the precipitation reaction is sent to the purifier for final purification treatment, and the treated water is sent to the first reservoir and the second reservoir for storage, so that it can be used by the family, saving energy, environmental protection, economy, and pollution less, healthier, and maximize the use of natural resources. In addition, the water storage unit can also play a role in adjusting the water storage to reduce the pressure on the municipal pipe network, improve the economic benefits of rainwater treatment projects, and greatly reduce the workload of operation and maintenance. , greatly increasing the feasibility and operability of rainwater treatment projects, which is conducive to promoting the development of sponge cities; the two reservoirs are set up to improve water storage capacity, and the first reservoir is set on the roof, which is convenient for roof gardens. The irrigation and high-floor water, the water delivery distance is short, there is no need to add too much power equipment, save electricity, and the second water storage tank is set under the house, which is convenient for the ground and low-floor water, the water delivery speed is fast, and it can be fully utilized rainwater.

Further, an isolation plate is provided inside the sedimentation tank, and a through hole is provided on the isolation plate. The isolation plate separates the sedimentation tank into a water layer and a drug layer, and the drug layer is provided with a precipitant, and the water layer is connected to the purifier through a connecting pipe. The set separation plate separates the water layer and the drug layer, so that the pollution and harmful substances in the water are precipitated in the drug layer under the action of the precipitant, so as to ensure the clarification of the water layer, so that the clean water in the water layer is output to the purifier; The through holes provided in the isolation plate make the precipitating agent contact with the water in the water layer, so as to cause chemical or physical reaction and sedimentation. The precipitating agent can be selected from alkaline substances, sulfides and the like.

Furthermore, the rainwater collection bucket is in the shape of a funnel with a large top and a small bottom. The top surface of the rainwater collection bucket is provided with a filter mesh screen, and the inner wall of the rainwater collection bucket is uniformly provided with spikes. The funnel-shaped rainwater collection bucket is set to prevent rainwater from splashing, the filter mesh screen is set to further filter the water entering the rainwater collection bucket, and the set spikes crush the large particles entering the rainwater collection bucket, and the particles Smaller, making it less likely to clog water delivery pipes.

Further, the upper side of the first reservoir is poured with a concrete layer, the upper side of the concrete layer is provided with a waterproof layer, and the upper side of the waterproof layer is provided with a second vegetation layer. The concrete layer is used to reinforce the first reservoir and the second reservoir. The waterproof layer is set to prevent the outside sewage from entering the first reservoir and contaminating the clear water in the first reservoir. The second vegetation layer is used to Cover the first water storage tank to beautify the appearance, and also play a water storage role to prevent rainwater from seeping into the first water storage tank.

Further, the water collection unit also includes a water collection ditch, which is arranged on the first vegetation layer in a stepped shape, and the water collection ditch is respectively connected with the gravel road and the drainage pipe outside the house. The gutter transports part of the excess rainwater on the first vegetation layer to the rainwater collection bucket, and part of it is discharged along the drainage pipe. Death from hypoxia.

Further, the water unit includes an irrigation pipe, the irrigation pipe is connected to the first reservoir, the irrigation pipe is provided with an atomizing nozzle, a drip hole, a timer and a gate, the timer is connected to the gate, and the atomization nozzle and the drip hole are arranged at intervals, The drip hole is provided with a filter film, and the atomizing nozzle includes a water spray pipe, a base and a locking head. The water pipe is connected to the locking head through the connection hole, at least eight first water spray holes are evenly arranged on the side wall of the base according to the circumferential direction, and the side wall of the locking head is provided with corresponding to the first water spray holes. Second spray hole. When the first vegetation layer and the second vegetation layer need to be watered, the valve is opened, the water in the first reservoir flows out along the irrigation pipe, and the vegetation is watered respectively through the atomizing nozzle and the drip hole, and the irrigation range is wide. Ensure the normal growth of vegetation in the roof garden, reduce the demand for external water resources, and further achieve the effect of fully utilizing the recycled rainwater. The timer can be used to set the watering time according to the actual situation, realize automatic watering, and improve the efficiency of watering , to avoid too much or too little watering; the filter film on the drip hole prevents external soil and other particulate matter from clogging the drip hole, ensuring the normal operation of the irrigation pipe; when the atomizing nozzle is working, the first spray hole and the second spray Corresponding to the holes, the water flow enters the locking head from the water spray pipe, and then sprays out from the eight second water spray holes and the first water spray hole, which increases the irrigation area, irrigates evenly, and can well irrigate the surrounding vegetation , when the work of the atomizing nozzle is not needed, as long as the locking head is rotated so that the second water spray hole intersects with the first water spray hole, the second water spray hole can be blocked so that the water cannot be sprayed out.

Further, a slider is provided on the outer wall of the locking head, and a chute is provided on the inner wall of the base, and the chute matches the slider. The chute includes a first slot, an arc slot and a second slot. The first card slot and the second card slot are respectively located on the left and right sides of the arc-shaped slot, and a rotating block is arranged on the top surface of the locking head. The set chute facilitates the sliding and restriction of the slider. When the slider is in the first slot, the first water spray hole communicates with the second water spray hole. When the slider is in the second slot, the first water spray The holes and the second water spray holes are interlaced, which makes the opening and closing of the locking head more convenient, and the provided rotating block is convenient for controlling the rotation of the locking head.

A construction method for a rainwater storage system for a roof garden as described above, comprising the following steps:

Step 1. Construction of the second reservoir

a. Determine the volume of the second reservoir according to the water consumption of the household, then determine the depth and width of the foundation pit according to the size of the second reservoir, and mark it on the design drawing, and then determine the second reservoir according to the house design drawing. The installation location of the reservoir, and clean the surface of the location, remove garbage and gravel, and then mark the location to facilitate the excavation of the foundation pit;

b. According to the design drawing, use an excavator to excavate the foundation pit at the marked position, then clean up the gravel and garbage in the foundation pit, and ram the foundation pit, then lay geotextile and buffer layer in the foundation pit, and Pipeline channels are reserved on one side of the pit;

c. Build a second reservoir in the foundation pit, reserve a connecting nozzle on the second reservoir, and install waterproof glue at the connecting nozzle;

d. Carry out a tightness test, and fill the leaking position of the second reservoir with epoxy resin to ensure the tightness of the second reservoir;

Step 2. Construction of processing unit

Step 3. Construction of the water collection unit

1. Construction of rainwater collection bucket

a. According to the design drawing, install rainwater collection buckets at the specified positions. The distance between adjacent rainwater collection buckets is 20-50cm. There are collection pipes installed at the bottom of the rainwater collection buckets, and the collection pipes pass through a general water pipe. Connected with the landscape pool;

b. Lay the root layer on the top layer of the roof, lay the first vegetation layer and pebbles on the upper side of the root layer according to the design drawing, lay the pebbles above the rainwater collection bucket, plant plants on the first vegetation layer, and Reserve the installation space for the first storage tank;

2. Excavation of catchment ditch

On the first vegetation layer, excavate the catchment ditch according to the height of the terrain, the catchment ditch is in the shape of steps, and connect the catchment ditch to the gravel road and drainage pipes paved with cobblestones;

Step 4. Installation of the first reservoir

a. According to the design drawing and water consumption, build the first reservoir in the installation space of the first reservoir, lay a sealing cloth in the first reservoir, and then conduct a sealing test to prevent the first reservoir from leaking Fill the position with epoxy resin to ensure the tightness of the first reservoir;

b. Concrete layer is poured above the first reservoir, a waterproof layer is laid above the concrete layer, and a second vegetation layer is laid above the waterproof layer;

c. Connect the output end of the first reservoir to the purifier through a connecting pipe;

Step five, the construction of the water unit

The irrigation pipes are connected to the first reservoir, and the irrigation pipes are arranged on the first vegetation layer in a horizontal and vertical intersection.

Further, the construction of the processing unit in step 2 includes

1. Installation of the purifier

a. Pouring the roof with concrete, cleaning the surface of the roof, leveling the roof, coating the roof with waterproof paint, and then laying a waterproof layer, and then selecting the installation point of the purifier on the roof according to the design drawing;

b. Set up a bracket at the installation point of the purifier, fix the purifier on the bracket through screws, and connect the purifier to the connecting nozzle of the second reservoir through the connecting pipe;

2. Installation of sedimentation tank

a. According to the design drawing, select the installation point of the sedimentation tank on the roof, mark it with a ruler and lime powder, and then draw a central cross line and a reference line at the marked place;

b. Support the formwork at the marked place, and then pour concrete. After the pouring is completed, remove the formwork and conduct a tightness test;

c. Place the precipitant at the bottom of the sedimentation tank, then pour a symmetrical block on the inner wall of the sedimentation tank, and then place an isolation plate on the block to ensure that the distance between the isolation plate and the bottom of the sedimentation tank is 30-50cm;

d. Install a sealing plate on the top of the sedimentation tank;

e. Connect the sedimentation tank and the purifier through the connecting pipe, and then return to the soil for landfill, and bury the sedimentation tank and the purifier at the bottom of the roof;

3. Excavation of the landscape pool

a. Build a landscape pool on the left and right sides of the roof, lay a base layer at the bottom of the landscape pool, and build fences around the landscape pool;

b. Aquatic organisms are cultivated in the landscape pool, and the upper layer of the landscape pool is connected to the sedimentation tank through a connecting pipe.

The present invention has the following beneficial effects due to the adoption of the above technical solution:

The rainwater during rainfall and the excess rainwater in the first vegetation layer are collected through the rainwater collection bucket, and the rainwater collection bucket is designed under the gravel road paved with cobblestones, so that the rainwater is filtered through layers of pebbles before entering the rainwater collection bucket. , and then into the rainwater collection bucket to prevent large particles from clogging the rainwater collection bucket. The rainwater collected by the rainwater collection bucket enters the landscape pool through the water delivery pipe. Purify, and also provide water resources for the landscape pool, and then transport the excess purified water in the landscape pool to the sedimentation tank through the connecting pipe, and carry out the sedimentation reaction in the sedimentation tank to precipitate the impurities in the water for further purification, and then The water after the precipitation reaction is sent to the purifier for final purification treatment, and the treated water is sent to the first reservoir and the second reservoir for storage, so that it can be used by the family, saving energy, environmental protection, economy, and pollution less, healthier, and maximize the use of natural resources; in addition, the water storage unit can also play a role in regulating water storage to reduce the pressure on the municipal pipe network, improve the economic benefits of rainwater treatment projects, and greatly reduce the workload of operation and maintenance , greatly increasing the feasibility and operability of rainwater treatment projects, which is conducive to promoting the development of sponge cities; the two reservoirs are set up to improve water storage capacity, and the first reservoir is set on the roof, which is convenient for roof gardens. The irrigation and high-floor water, the water delivery distance is short, there is no need to add too much power equipment, save electricity, and the second water storage tank is set under the house, which is convenient for the ground and low-floor water, the water delivery speed is fast, and it can be fully utilized rainwater.

The invention integrates roof construction, rainwater collection and treatment, and water use terminals into one, and takes overall considerations, effectively reduces the pollution of rainwater, protects the water body environment, realizes the collection, purification, storage and reuse of rainwater, and improves the utilization of water resources The efficiency can reduce water pressure, and at the same time, it can make the maintenance and irrigation of the roof garden more convenient, reduce the energy of water delivery, and be more economical and environmentally friendly.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is a structural representation of a rainwater storage system for roof gardens of the present invention;

Fig. 2 is a schematic structural diagram of direction A in Fig. 1;

Fig. 3 is the plane structure schematic diagram of roof among the present invention;

Fig. 4 is the structural representation of rainwater collecting bucket among the present invention;

Fig. 5 is the structural representation of irrigation pipe among the present invention;

Fig. 6 is a schematic structural view of the atomizing nozzle in the present invention.

Reference signs: 1. roof; 2. gravel road; 3. first vegetation layer; 4. rainwater collection bucket; 5. water pipe; 6. landscape pool; 7. sedimentation tank; 8. purifier; 9. first Reservoir; 10. Second reservoir; 11. Isolation plate; 12. Through hole; 13. Water layer; 14. Drug layer; 15. Filtration mesh screen; 16. Spike part; 17. Concrete layer; 18. Waterproof layer; 19. Second vegetation layer; 20. Irrigation pipe; 21. Atomizing nozzle; 22. Drip hole; 23. Filter membrane; 24. Spray pipe; 25. Base; 26. Locking head; 27 , groove; 28, connecting hole; 29, first spray hole; 30, second spray hole; 31, slider; 32, first slot; 33, arc slot; 34, second slot; 35. Rotating block; 36. Connecting pipe; 37. Ditch.

detailed description

As shown in Figures 1-6, it is a rainwater storage system for roof gardens of the present invention, including a roof 1, a water collection unit, a treatment unit, a water storage unit and a water unit. The formed gravel road 2 and the first vegetation layer 3, the gravel road 2 and the first vegetation layer 3 are arranged alternately, the water collection unit includes rainwater collection buckets 4 and water pipes 5, and the rainwater collection buckets 4 are arranged on the gravel road 2 at even intervals The lower side of the rainwater collection bucket 4 is a funnel shape with a large top and a small bottom. The top surface of the rainwater collection bucket 4 is provided with a filter mesh screen 15, and the inner wall of the rainwater collection bucket 4 is evenly provided with spikes 16. The funnel-shaped rainwater collection bucket 4 is set to prevent rainwater from splashing, the filter mesh screen 15 is set to further filter the water entering the rainwater collection bucket 4, and the set spikes 16 crush the large particles entering the rainwater collection bucket 4 Substance, its particle becomes smaller, makes it difficult to block water delivery pipe 5. The water collecting unit also includes a water collecting ditch 37, which is arranged on the first vegetation layer 3 in a stepped shape, and the water collecting ditch 37 is respectively connected with the gravel road 2 and the drainage pipe outside the house. The gutter 37 transports part of the excess rainwater on the first vegetation layer 3 to the rainwater collection bucket 4, and part of it is discharged along the drain pipe. The drain pipe and the rainwater collection bucket 4 cooperate to speed up the drainage and avoid the first vegetation layer 3 Death due to lack of oxygen due to excessive rain.

The treatment unit includes a landscape pond 6, a sedimentation pond 7 and a purifier 8 connected in sequence. The rainwater collection bucket 4 is connected to the landscape pond 6 through a water delivery pipe 5. The interior of the sedimentation pond 7 is provided with an isolation plate 11, and the isolation plate 11 is provided with a through The hole 12 and the isolation plate 11 separate the sedimentation tank 7 into a water layer 13 and a drug layer 14 , the drug layer 14 is provided with a precipitant, and the water layer 13 is connected to the purifier 8 through a connecting pipe 36 . The set separation plate 11 separates the water layer 13 and the drug layer 14, so that the pollution and harmful substances in the water are precipitated in the drug layer 14 under the action of the precipitant, so as to ensure the clarification of the water layer 13 and make the water layer 13 clean. The water is output to the purifier 8; the through hole 12 provided on the isolation plate 11 makes the precipitating agent and the water in the water layer 13 contact each other, so that it produces a chemical or physical reaction, and sedimentation occurs. The precipitating agent can be selected from alkaline substances, vulcanized things etc. The purifier 8 is connected to the water storage unit through the connecting pipe 36, the water storage unit includes a first water storage tank 9 and a second water storage tank 10, the first water storage tank 9 is located on the roof 1, and the second water storage tank 10 is located in the house. below. The upper side of the first reservoir 9 is poured with a concrete layer 17 , the upper side of the concrete layer 17 is provided with a waterproof layer 18 , and the upper side of the waterproof layer 18 is provided with a second vegetation layer 19 . Concrete layer 17 is used for reinforcing the first reservoir 9, and the waterproof layer 18 that is set prevents external sewage from entering the first reservoir 9, polluting the clear water in the first reservoir 9, and the second vegetation layer 19 that is set is used Cover the first reservoir 9 to beautify the appearance, and also play the role of water storage and water fixation to prevent rainwater from infiltrating into the first reservoir 9.

The water unit comprises an irrigation pipe 20, the irrigation pipe 20 is connected with the first reservoir 9, the irrigation pipe 20 is provided with an atomizing nozzle 21, a drip hole 22, a timer and a gate, the timer is connected with the gate, the atomizing nozzle 21 and The drip holes 22 are arranged at intervals, and the drip holes 22 are provided with a filter membrane 23. The filter membrane 23 on the drip holes 22 prevents particulate matter such as external soil from blocking the drip holes 22, ensuring the normal operation of the irrigation pipe 20; When the layer 3 and the second vegetation layer 19 are watered, the valve is opened, and the water in the first reservoir 9 flows out along the irrigation pipe 20, and the vegetation is watered through the atomizing nozzle 21 and the drip hole 22 respectively, and the watering range is wide. , to ensure the normal growth of vegetation in the roof 1 garden, reduce the demand for external water resources, and further achieve the effect of fully utilizing the recycled rainwater. The timer can be used to set the watering time according to the actual situation, realize automatic watering, and improve watering efficiency. To improve the efficiency, avoid watering too much or too little. The atomizing nozzle 21 includes a water spray pipe 24, a base 25 and a locking head 26, the base 25 is provided with a groove 27, the locking head 26 is rotatably connected in the groove 27, and the bottom surface of the groove 27 is provided with a connecting hole 28 , the water spray pipe 24 passes through the connection hole 28 and is connected with the locking head 26, and the side wall of the base 25 is evenly provided with at least eight first water spray holes 29 according to the circumferential direction, and the side wall of the locking head 26 is provided with The first water spray hole 29 corresponds to the second water spray hole 30 . When the atomizing nozzle 21 was working, the first water spray hole 29 was corresponding to the second water spray hole 30, and the water flow entered the locking head 26 from the water spray pipe 24, and then from the eight second water spray holes 30 and the first water spray hole. Water hole 29 sprays out, has increased irrigation area, waters evenly, can well irrigate surrounding vegetation, when not needing spray nozzle 21 work, as long as rotation locking head 26, make the second water spray hole 30 and the first Once the water spray holes 29 are staggered, the second water spray holes 30 can be blocked so that the water cannot be sprayed out. The outer side wall of locking head 26 is provided with slide block 31, and the inner side wall of base 25 is provided with chute, and chute matches with slide block 31, and chute comprises first draw-in groove 32, arc groove 33 and the second The locking slot 34 , the first locking slot 32 and the second locking slot 34 are respectively located on the left and right sides of the arc-shaped slot 33 , and the top surface of the locking head 26 is provided with a rotating block 35 . The provided chute facilitates the sliding and restriction of the slider 31. When the slider 31 is located in the first slot 32, the first water spray hole 29 communicates with the second water spray hole 30. When the slider 31 is located in the second slot 32 At 34 o'clock, the first water spray hole 29 and the second water spray hole 30 are staggered, so that the opening and closing of the locking head 26 is more convenient, and the rotating block 35 provided is convenient to control the rotation of the locking head 26.

The rainwater during rainfall and the excess rainwater in the first vegetation layer 3 are collected by the rainwater collection bucket 4, and the rainwater collection bucket 4 is designed under the gravel road 2 paved with cobblestones, so that the rainwater passes through the rainwater collection bucket 4 before entering the rainwater collection bucket 4. The pebbles are filtered layer by layer, and then enter the rainwater collection bucket 4 to prevent large particles from clogging the rainwater collection bucket 4. The rainwater collected by the rainwater collection bucket 4 enters the landscape pool 6 through the water delivery pipe 5, and the landscape pool 6 is planted There are aquatic organisms, and the rainwater is first purified through biological reaction in the landscape pool 6, and also provides water resources for the landscape pool 6 at the same time, and then the excess purified water in the landscape pool 6 is transported to the sedimentation tank 7 through the connecting pipe 36. The precipitation reaction is carried out in the sedimentation tank 7, and the impurities in the water are precipitated for further purification, and then the water after the precipitation reaction is transported to the purifier 8 for final purification treatment, and the treated water is respectively transported to the first The storage tank 9 and the second storage tank 10 are stored for family use, energy saving, environmental protection, economy, less pollution, healthier, and maximum utilization of natural resources. In addition, the water storage unit can also play a role in adjusting and storing water. In order to reduce the pressure on the municipal pipe network, improve the economic benefits of rainwater treatment projects, greatly reduce the workload of operation and maintenance, greatly increase the implementability and operability of rainwater treatment projects, and help promote the development of sponge cities; Two reservoirs improve the water storage capacity. The first reservoir 9 is set on the roof 1 to facilitate the watering of the garden on the roof 1 and the water on the high floors. For electric energy, the second water storage tank 10 is arranged under the house to facilitate water use on the ground and lower floors, and the water delivery speed is fast, making full use of rainwater.

A construction method for a rainwater storage system for a roof garden as described above, comprising the following steps:

Step 1, the construction of the second reservoir 10

a. Determine the volume of the second reservoir 10 according to the water consumption of the household, then determine the depth and width of the foundation pit according to the size of the second reservoir 10, and mark it in the design drawing, and then determine it according to the house design drawing The installation position of the second water storage tank 10, and the surface of this position is cleaned up, and garbage and gravel are removed, and then a mark is made at this position, so that the excavation of the foundation pit;

b. According to the design drawing, use an excavator to excavate the foundation pit at the marked position, then clean up the gravel and garbage in the foundation pit, and ram the foundation pit, then lay geotextile and buffer layer in the foundation pit, and Pipeline channels are reserved on one side of the pit;

c. Build a second reservoir 10 in the foundation pit, reserve a connecting nozzle on the second reservoir 10, and install waterproof glue at the connecting nozzle;

d. Carry out a tightness test, and fill the leaking position of the second water storage tank 10 with epoxy resin to ensure the tightness of the second water storage tank 10;

Step 2. Construction of processing unit

1. Installation of purifier 8

a. Pouring the roof 1 with concrete, cleaning the surface of the roof 1, leveling the roof 1, coating the roof 1 with waterproof paint, and then laying the waterproof layer 18, and then selecting the purifier 8 on the roof 1 according to the design drawing the installation point;

B, set up a support at the installation point of the purifier 8, the purifier 8 is fixedly connected on the support by screws, and the purifier 8 is connected with the connecting nozzle of the second reservoir 10 through the connecting pipe 36;

2. Installation of sedimentation tank 7

a. According to the design drawing, select the installation point of the sedimentation tank 7 on the roof 1, and mark it with a ruler and lime powder, and then draw a central cross line and a reference line at the mark;

b. Support the formwork at the marked place, and then pour concrete. After the pouring is completed, remove the formwork and conduct a tightness test;

c. Place the precipitant at the bottom of the sedimentation tank 7, then pour a symmetrical block on the inner wall of the sedimentation tank 7, and then place the isolation plate 11 on the block to ensure the distance between the isolation plate 11 and the bottom of the sedimentation tank 7 30-50cm;

d. Install a sealing plate on the top of the sedimentation tank 7;

e, the sedimentation tank 7 is connected with the purifier 8 through the connecting pipe 36, and then returned to landfill, and the sedimentation tank 7 and the purifier 8 are buried at the bottom of the roof;

3. Excavation of landscape pool 6

A, construct landscape pool 6 respectively on the left and right sides of roof 1, lay the base layer at the bottom of landscape pool 6, build fence around landscape pool 6;

b. Aquatic organisms are cultivated in the landscape pool 6, and the upper layer of the landscape pool 6 is connected with the sedimentation tank 7 through the connecting pipe 36.

Step 3. Construction of the water collection unit

1. Construction of rainwater collection bucket 4

a. According to the design drawing, install rainwater collecting buckets 4 at specified positions, the distance between adjacent rainwater collecting buckets 4 is 20-50cm, and collecting pipes are respectively installed at the bottom of rainwater collecting buckets 4, and the collecting pipes pass through a main The water pipe 5 is connected with the landscape pool 6;

B. Lay the root layer on the top layer of the roof 1, lay the first vegetation layer 3 and pebbles respectively on the upper side of the root layer according to the design drawing, and lay the pebbles above the rainwater collection bucket 4, on the first vegetation layer 3 Planting plants, and reserving the installation space of the first reservoir 9;

2. Excavation of catchment ditch 37

On the first vegetation layer 3, excavate the catchment ditch 37 according to the height of the terrain, the catchment ditch 37 is stepped, and the catchment ditch 37 is connected with the cobblestone road 2 and the drainpipe respectively;

Step 4, the installation of the first reservoir 9

a. According to the design drawing and water consumption, build the first reservoir 9 in the installation space of the first reservoir 9, lay a sealing cloth in the first reservoir 9, and then perform a tightness test. The leaking position of the reservoir 9 is filled with epoxy resin to ensure the tightness of the first reservoir 9;

B, pour concrete layer 17 above the first reservoir 9, lay waterproof layer 18 above the concrete layer 17, lay the second vegetation layer 19 above the waterproof layer 18;

c, the first reservoir 9 is connected to the output end of the purifier 8 through the connecting pipe 36;

Step five, the construction of the water unit

The irrigation pipes 20 are connected to the first reservoir 9 , and the irrigation pipes 20 are arranged on the first vegetation layer 3 in a horizontal and vertical direction.

The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are covered by the protection scope of the present invention.

Claims (9)

1. A rainwater storage system for roof gardens, comprising a roof, a water collection unit, a treatment unit, a water storage unit and a water unit, is characterized in that: the roof is provided with a gravel road paved by cobblestones and The first vegetation layer, the gravel road and the first vegetation layer are interlaced, the water collection unit includes rainwater collection buckets and water pipes, and the rainwater collection buckets are arranged at even intervals on the lower side of the gravel road, The treatment unit includes a landscape pond, a sedimentation pond, and a purifier connected in sequence, the rainwater collection bucket is connected to the landscape pond through the water delivery pipe, and the purifier is connected to the water storage unit through a connecting pipe. The water storage unit includes a first water storage tank and a second water storage tank, the first water storage tank is located on the roof, and the second water storage tank is located under the house. 2. A rainwater collection and storage system for roof gardens according to claim 1, characterized in that: the inside of the sedimentation tank is provided with an isolation plate, and the isolation plate is provided with through holes, and the isolation plate The sedimentation tank is divided into a water layer and a drug layer, the drug layer is provided with a precipitant, and the water layer is connected to the purifier through the connecting pipe. 3. A rainwater collection and storage system for roof gardens according to claim 1, wherein the rainwater collection bucket is in the shape of a funnel with a large top and a small bottom, and the top surface of the rainwater collection bucket is provided with a filter Mesh screen, the inner wall of the rainwater collection bucket is uniformly provided with spikes. 4. A rainwater storage system for roof gardens according to claim 1, characterized in that: the upper side of the first reservoir is poured with a concrete layer, and the upper side of the concrete layer is provided with a waterproof layer, the upper side of the waterproof layer is provided with a second vegetation layer. 5. A rainwater storage system for roof gardens according to claim 1, characterized in that: the water collection unit further includes a water collection ditch, and the water collection ditch is arranged in a ladder shape on the first On the vegetation layer, the gutter is respectively connected with the gravel road and the drainage pipe outside the house. 6. A rainwater storage system for roof gardens according to claim 1, characterized in that: the water unit includes an irrigation pipe, the irrigation pipe is connected to the first reservoir, and the irrigation The tube is provided with an atomizing nozzle, a drip hole, a timer and a gate, the timer is connected to the gate, the atomizing nozzle and the drip hole are arranged at intervals, and a filter membrane is provided on the drip hole, so The atomizing nozzle includes a water spray pipe, a base and a locking head, the base is provided with a groove, the locking head is rotatably connected in the groove, and the bottom surface of the groove is provided with a connecting hole, The water spray pipe is connected to the locking head through the connecting hole, at least eight first water spray holes are uniformly arranged on the side wall of the base according to the circumferential direction, and on the side wall of the locking head A second water spray hole corresponding to the first water spray hole is provided. 7. A rainwater storage system for roof gardens according to claim 6, characterized in that: a slider is provided on the outer wall of the locking head, and a chute is provided on the inner wall of the base , the chute matches the slider, the chute includes a first slot, an arc slot and a second slot, the first slot and the second slot are respectively located on the arc On the left and right sides of the shaped groove, a rotating block is arranged on the top surface of the locking head. 8. A construction method for a rainwater storage system for roof gardens as claimed in claim 1, characterized in that: comprising the steps of: Step 1. Construction of the second reservoir a. Determine the volume of the second reservoir according to the water consumption of the household, then determine the depth and width of the foundation pit according to the size of the second reservoir, and mark it on the design drawing, and then determine the second reservoir according to the house design drawing. The installation location of the reservoir, and clean the surface of the location, remove garbage and gravel, and then mark the location to facilitate the excavation of the foundation pit; b. According to the design drawing, use an excavator to excavate the foundation pit at the marked position, then clean up the gravel and garbage in the foundation pit, and ram the foundation pit, then lay geotextile and buffer layer in the foundation pit, and Pipeline channels are reserved on one side of the pit; c. Build a second reservoir in the foundation pit, reserve a connecting nozzle on the second reservoir, and install waterproof glue at the connecting nozzle; d. Carry out a tightness test, and fill the leaking position of the second reservoir with epoxy resin to ensure the tightness of the second reservoir; Step 2. Construction of processing unit Step 3. Construction of water collection unit 1. Construction of rainwater collection bucket a. According to the design drawing, install rainwater collection buckets at the specified positions. The distance between adjacent rainwater collection buckets is 20-50cm. There are collection pipes installed at the bottom of the rainwater collection buckets, and the collection pipes pass through a general water pipe. Connected with the landscape pool; b. Lay the root layer on the top layer of the roof, lay the first vegetation layer and pebbles on the upper side of the root layer according to the design drawing, lay the pebbles above the rainwater collection bucket, plant plants on the first vegetation layer, and Reserve the installation space for the first storage tank; 2. Excavation of catchment ditch On the first vegetation layer, excavate the catchment ditch according to the height of the terrain, the catchment ditch is in the shape of steps, and connect the catchment ditch to the gravel road and drainage pipes paved with cobblestones; Step 4. Installation of the first reservoir a. According to the design drawing and water consumption, build the first reservoir in the installation space of the first reservoir, lay a sealing cloth in the first reservoir, and then conduct a sealing test to prevent the first reservoir from leaking Fill the position with epoxy resin to ensure the tightness of the first reservoir; b. Concrete layer is poured above the first reservoir, a waterproof layer is laid above the concrete layer, and a second vegetation layer is laid above the waterproof layer; c. Connect the output end of the first reservoir to the purifier through a connecting pipe; Step five, the construction of the water unit The irrigation pipes are connected to the first reservoir, and the irrigation pipes are arranged on the first vegetation layer in a horizontal and vertical intersection. 9. A rainwater storage system for roof gardens according to claim 8, characterized in that: The construction of the processing unit in step two includes 1. Installation of the purifier a. Pouring the roof with concrete, cleaning the surface of the roof, leveling the roof, coating the roof with waterproof paint, and then laying a waterproof layer, and then selecting the installation point of the purifier on the roof according to the design drawing; b. Set up a bracket at the installation point of the purifier, fix the purifier on the bracket through screws, and connect the purifier to the connecting nozzle of the second reservoir through the connecting pipe; 2. Installation of sedimentation tank a. According to the design drawing, select the installation point of the sedimentation tank on the roof, mark it with a ruler and lime powder, and then draw a central cross line and a reference line at the marked place; b. Support the formwork at the marked place, and then pour concrete. After the pouring is completed, remove the formwork and conduct a tightness test; c. Place the precipitant at the bottom of the sedimentation tank, then pour a symmetrical block on the inner wall of the sedimentation tank, and then place an isolation plate on the block to ensure that the distance between the isolation plate and the bottom of the sedimentation tank is 30-50cm; d. Install a sealing plate on the top of the sedimentation tank; e. Connect the sedimentation tank and the purifier through the connecting pipe, and then return to the soil for landfill, and bury the sedimentation tank and the purifier at the bottom of the roof; 3. Excavation of the landscape pool a. Build a landscape pool on the left and right sides of the roof, lay a base layer at the bottom of the landscape pool, and build fences around the landscape pool; b. Aquatic organisms are cultivated in the landscape pool, and the upper layer of the landscape pool is connected to the sedimentation tank through a connecting pipe.