CN207499049U - A kind of building flower bed type Rain Garden - Google Patents

Abstract

The utility model discloses a flower bed type rainwater garden in a building, which comprises a rainwater collecting pipe vertically arranged on the external surface of the building wall from top to bottom, and the rainwater collecting pipe is connected with a rainwater garden box through a horizontal pipe; the rainwater garden box includes a box body, Inside the box, there are planting soil layers, sandy soil layers and gravel layers from top to bottom. Drought and flood resistant plants are planted in the planting soil layers. The rain garden box is equipped with rainwater inlet pipes and overflow pipes. Drip irrigation pipe, the bottom of the rain garden box is equipped with a purification rainwater collection pipe, the rainwater collection pipe is connected with the rainwater introduction pipe of the rain garden box through a horizontal pipe, the end of the overflow pipe is connected with the sewage pool, and the end of the drip irrigation pipe is connected with the water source to purify rainwater The end of the collecting pipe communicates with the water storage tank. The utility model organically combines the rainwater garden with the building, has the advantages of purifying and utilizing rainwater and beautifying the building, not only depends on the building, but also can be properly allocated according to different buildings during the construction process.

Description

A flower bed type rain garden for a building

technical field

The utility model belongs to the technical field of urban construction, in particular to a flower bed type rainwater garden of a building.

Background technique

Rainwater is originally a resource and a part of the natural water cycle, which can regulate and replenish regional water resources and replenish groundwater resources. In the urban environment, due to the limitations of concepts, technology and other factors, rainwater is often not used effectively, and instead causes disasters. In view of the shortage of water resources in our country and the runoff pollution and urban floods caused by rainwater, the collection, treatment and comprehensive utilization of rainwater have become urgent problems in our country. In recent years, the rain garden concept and technology proposed for urban stormwater management have been vigorously promoted in the United States, Europe and other places and achieved good results.

The rain garden is based on the sponge city and is the main force of the sponge city. Sponge city refers to a city that can be like a sponge and has good "elasticity" in adapting to environmental changes and responding to natural disasters. When it rains, it absorbs, stores, infiltrates, and purifies water, and "releases" the stored water when needed. and take advantage of it. The rain garden is a rainwater regulation and storage device adapted to the natural geographical conditions, so as to realize the resource management of rainwater. At the same time, the use of landscaping treatment means makes plants and materials the protagonists of the garden, rejuvenates the rainwater facilities and creates an artistic "rainwater bank". In addition to having a real function of rainwater regulation and storage, it should also be endowed with high ornamental value, making it a basic unit to solve urban rainwater problems and build a sponge city.

Rain gardens, also known as bioretention areas, are low-lying areas of landscaping that are planted with trees or shrubs and covered by bark or ground cover. It replenishes groundwater and reduces the flood peak of storm surface runoff by retaining rainwater for infiltration. It can also reduce pollution through processes such as adsorption, degradation, ion exchange, and volatilization. It is an ecologically sustainable rainwater control and rainwater utilization facility.

The rain garden was formed in the 1990s in Maryland, USA, when a real estate developer in Prince George's County built a residential area, hoping to replace the traditional stormwater optimal management system (BMPs) with an ecological retention and rainwater absorption site. With the assistance of the county's Department of Environmental Resources, each residence in the district is equipped with a rain garden of 30 to 40 square meters. After several years of tracking and monitoring after its completion, the results show that the rain garden has reduced the surface rainwater runoff by 75%-80% on average. Since then, various forms of rain gardens have begun to be built around the world.

Since the development of sponge city and rain garden, many innovative concepts have been developed and many examples have been created. Such as Donald Brook Water Park in Portland, Kronsberg Rain Garden in Hannover, Germany, etc.

Rain gardens can be divided into many types according to different purposes:

1. To control rain and flood

This type of rain garden mainly serves the purpose of retaining and infiltrating rainwater, and its structure is relatively simple. It is generally used in areas with better environment and less rainwater pollution, such as residential areas.

2. To reduce runoff pollution

This type of rain garden not only retains and infiltrates rainwater, but also purifies water. It is suitable for areas with relatively serious environmental pollution, such as city centers and parking lots. Due to the removal of pollutants in rainwater, tight design is required in soil ratio, plant selection and substructure.

A reasonable rain garden should also have the following functions

1. Reduce flood peak flow and reduce rainwater discharge to protect downstream pipelines, structures and water bodies through stagnant storage;

2. Utilize plant interception and soil infiltration to purify rainwater and reduce pollution;

3. Make full use of the runoff rainfall to conserve groundwater, and collect and utilize the treated rainwater to alleviate the shortage of water resources;

4. Reasonable design and proper maintenance can improve the environment of the community, provide food and habitat for birds, butterflies and other animals, and achieve good landscape effects.

The rain garden is not only a functional structure, but also a landscape. At the same time, because of its function, the plants planted in it must be resistant to drought and waterlogging. At the same time, there must be a certain appreciation. It is best to use native species as the mainstay, with exotic functional species as the match. Choose plants with well-developed root systems, luxuriant stems and leaves, and strong purification capabilities.

The concept of sponge city and rain garden in my country has been developed for a short time, and many places are still in the basic development stage, so such structures and examples are very rare. There is a lot of room for development to be developed and utilized.

Utility model content

The technical problem mainly solved by the utility model is to provide a kind of building flower bed type rainwater garden, which is applied to the device for collecting and purifying rainwater on the roof, which can effectively collect the rainwater on the roof and carry out biological purification, through adsorption, degradation, ion exchange and volatilization, etc. The process reduces pollution in rainwater and reduces surface rainwater runoff, which can not only make full use of rainwater, but also reduce urban rain and flood disasters.

The purpose of this utility model is achieved in the following manner:

A flower bed type rain garden for a building, comprising a rainwater collection pipe vertically arranged on the outer surface of a building wall from top to bottom, the rainwater collection pipe is connected with a rainwater garden box through a horizontal pipe; the rainwater garden box includes a box body, and the inside of the box body The planting soil layer, sandy soil layer and gravel layer are arranged below. Drought and waterlogging tolerant plants are planted in the planting soil layer. The rain garden box is equipped with rainwater introduction pipes and overflow pipes, and drip irrigation pipes are embedded in the planting soil layer. The rain garden The bottom of the box is provided with a purification rainwater collection pipe, the rainwater collection pipe is connected with the rainwater introduction pipe of the rain garden box through a horizontal pipe, the end of the overflow pipe is connected with the sewage pool, the end of the drip irrigation pipe is connected with the water source, and the end of the purified rainwater collection pipe is connected with the tank connection;

The connection between the rainwater collection pipe and the first horizontal pipe is provided with a first groove, the bottom surface of the first groove is flush with the bottom surface of the first horizontal pipe, and there is a gap between the side of the first groove and the pipe wall of the rainwater collection pipe. A certain distance L1, the second horizontal pipe extends into the rainwater collection pipe for a distance L2, the position corresponding to the rainwater collection pipe and the second horizontal pipe is provided with a second groove, the bottom surface of the second groove is flat with the bottom surface of the second horizontal pipe Aligned and connected, there is a pipe gap between the second groove, the wall of the rainwater collection pipe and the second horizontal pipe; the first groove and the second groove are arranged at intervals from top to bottom between the rainwater collection pipe and the horizontal pipe .

Said L1≥L2.

The flower bed style rainwater garden of the building is located on the balcony of the building.

The water storage tank is a pp module.

The height range of the drought and waterlogging tolerant plants is 30-70cm.

The drought-tolerant and waterlogging-tolerant plants are reeds, wild rice stems, water hyacinths, umbrella grasses, and rushes.

The inner bottom surface of the box body is a slope, and the side provided with the purified rainwater collecting pipe is the lower side.

The inclination angle of the slope is 1-5°.

Compared with the prior art, the utility model collects rainwater from the roof into the rainwater collection pipe, enters the rainwater garden boxes through the pipe, and reduces the pollution in the rainwater through the processes of vegetation soil adsorption, degradation, ion exchange and volatilization. The excess purified rainwater is then introduced into the storage tank to reduce surface rainwater runoff, which can not only make full use of rainwater, but also reduce urban rain and flood disasters. The utility model organically combines the rainwater garden with the building, has the advantages of purifying and utilizing rainwater and beautifying the building, not only depends on the building, but also can be properly allocated according to different buildings during the construction process.

Description of drawings

Fig. 1 is the front view of the utility model.

Fig. 2 is a schematic structural view of the utility model.

Fig. 3 is a schematic diagram of the internal structure of the rain garden box.

Fig. 4 is a schematic diagram of the internal structure of the rainwater collecting pipe and the horizontal pipe.

Fig. 5 is a sectional view along the direction of Fig. 4A-A.

Among them, 1 is the rainwater collection pipe; 2 is the rain garden box; 3 is the horizontal pipe; 31 is the first horizontal pipe; 32 is the second horizontal pipe; 4 is the first groove; 5 is the second groove; 6 is planting Soil layer; 7 is an overflow pipe; 8 is a drip irrigation pipe; 9 is a purification rainwater collection pipe; 10 is a drought-resistant and flood-resistant plant; 11 is a rainwater introduction pipe; 12 is a sand layer; 13 is a gravel layer; 14 is a box; 15 is a pipe gap.

Detailed ways

As shown in accompanying drawings 1-5, a flower bed type rainwater garden of a building includes a rainwater collection pipe 1 vertically arranged on the outer surface of the building wall from top to bottom, and the rainwater collection pipe 1 communicates with the rainwater garden box 2 through a horizontal pipe 3 The rain garden box 2 includes a box body 14, and the inside of the box body 14 is provided with a planting soil layer 6, a sandy soil layer 12 and a gravel layer 13 from top to bottom, and the planting soil layer 6 is planted with drought-resistant and flood-resistant plants 10, and the rain garden box 2 is provided with a rainwater introduction pipe 11 and an overflow pipe 7, a drip irrigation pipe 8 is embedded in the planting soil layer 6, and a purified rainwater collection pipe 9 is provided at the bottom of the rain garden box 2, and the rainwater collection pipe 1 passes through the horizontal pipe 3 and the rain garden box 2 The rainwater introduction pipe 11 is communicated, the end of the overflow pipe 7 is communicated with the sewage tank, the end of the drip irrigation pipe 8 is communicated with the water source, and the end of the purified rainwater collecting pipe 9 is communicated with the water storage tank;

The junction of the rainwater collection pipe 1 and the first horizontal pipe 31 is provided with a first groove 4, the bottom surface of the first groove 4 is flush with the bottom surface of the first horizontal pipe 31, and the side surface of the first groove 4 is aligned with the rainwater collection pipe. There is a certain distance L1 between the pipe walls of 1, the second horizontal pipe 32 extends into the rainwater collection pipe 1 for a distance L2, and the position corresponding to the rainwater collection pipe 1 and the second horizontal pipe 32 is provided with a second groove 5, the second The bottom surface of the groove 5 is flush with the bottom surface of the second horizontal pipe 32 and is connected, and there is also a pipe gap 15 between the second groove 5, the wall of the rainwater collection pipe 1 and the second horizontal pipe 32; the rainwater collection pipe 1 and the second horizontal pipe 32 A first groove 4 and a second groove 5 are arranged at intervals between the horizontal pipes 3 from top to bottom.

The setting of the first groove 4 and the second groove 5 can make the rainwater flowing down from the rainwater collection pipe 1 flow into the horizontal pipe 3 respectively, and then flow into each rain garden box 2 through the horizontal pipe 3; A groove 4 can catch a part of the rainwater flowing down, so that this part of rainwater enters the corresponding rain garden box 2 along the first horizontal pipe 31, and the part of the rainwater not caught by the first groove 4 flows along the rainwater collection pipe. 1 continues to flow downward, and when it reaches the second groove 5, the second groove 5 catches part of the rainwater flowing down, so that this part of rainwater enters the corresponding rain garden box 2 along the second horizontal pipe 32, without The rainwater caught by the second groove 5 flows down from the pipe gap 15, and continues to flow down along the rainwater collecting pipe 1, and when it reaches the next first groove 4, the next first groove 4 can flow down Part of the rainwater is caught, so that this part of rainwater enters the corresponding rainwater garden box 2 along the first horizontal pipe 31..., and so on, it can be ensured that the rainwater collected by the rainwater collection pipe 1 can enter the balcony and other places of the building respectively. 2 of each rain garden box.

There must be a certain distance L1 between the side of the first groove 4 and the pipe wall of the rainwater collecting pipe 1, so as to ensure that the first groove 4 only catches part of the rainwater flowing down, rather than all the rainwater.

The above-mentioned L1≥L2 can ensure that the second groove 5 can catch more rainwater flowing down, because the flow of rainwater in the rainwater collecting pipe 1 is not flowing against the wall.

The flower bed style rainwater garden of the building is located on the balcony of the building.

The storage tank is a pp module, which is more conducive to the storage and utilization of rainwater.

The height range of the drought- and flood-tolerant plants 10 is 30-70 cm.

The drought- and flood-tolerant plants 10 are reeds, wild rice stems, water hyacinth, umbrella grass, and rushes. These plants are all beautiful in appearance, with well-developed root systems, luxuriant stems and leaves, and strong purification capabilities.

The inner bottom of the box body 14 is an inclined plane, and the side provided with the purified rainwater collecting pipe 9 is the lower side, so that the purified rainwater can be better introduced into the purified rainwater collecting pipe 9 .

The inclination angle of the above-mentioned slope is 1-5°.

The working process of the utility model is as follows: rainwater flows down from top to bottom along the rainwater collection pipe 1, and enters the rainwater garden boxes 2 arranged on the balcony of the building through the first groove 4 and the second groove 5. The planting soil layer 6 of the box 2 is planted with drought-resistant and flood-resistant plants 10, which contain a large number of microorganisms, which can reduce the pollution in rainwater by processes such as degradation, ion exchange and volatilization; the sandy soil layer 12 at the bottom of the planting soil layer 6 is located at Between the planting soil layer 6 and the gravel layer 13, it acts as a buffer to prevent water and soil loss in the planting soil layer; the gravel layer 13 has a large middle gap and strong supporting capacity, which can not only support the upper structure, but also allow water to flow therein; The rainwater purified and filtered by the planting soil layer 6, the sand layer 12 and the gravel layer 13 is stored in the water storage tank along the purified rainwater collection pipe 9 for watering flowers and trees.

When the rainwater was too heavy, the rainwater entering the rain garden box 2 had no time to be collected by the rain garden box 2, and the excess rainwater was exported to the sewage tank by the overflow pipe 7 to prevent overflow.

In the case of prolonged drought, the plants in the rain garden box are short of water, and the rain garden box 2 can be watered through the drip irrigation pipe 8, and the water used to water the rain garden box 2 can be rainwater in a purified water storage tank.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those skilled in the art, without departing from the overall concept of the utility model, some changes and improvements can also be made, and these should also be regarded as Protection scope of the present utility model.

Claims (9)

1. A flower bed type rainwater garden in a building, characterized in that: it includes a rainwater collection pipe (1) vertically arranged on the outer surface of the building wall from top to bottom, and the rainwater collection pipe (1) passes through the horizontal pipe (3) and the rainwater garden The box (2) is connected; the rain garden box (2) includes a box body (14), and the inside of the box body (14) is provided with a planting soil layer (6), a sand layer (12) and a gravel layer (13) from top to bottom, Drought and waterlogging tolerant plants (10) are planted in the planting soil layer (6), rainwater garden boxes (2) are provided with rainwater introduction pipes (11) and overflow pipes (7), and drip irrigation is embedded in the planting soil layer (6) Pipe (8), the bottom of the rain garden box (2) is provided with a purified rainwater collection pipe (9), and the rainwater collection pipe (1) communicates with the rainwater introduction pipe (11) of the rain garden box (2) through a horizontal pipe (3), The end of the overflow pipe (7) is connected with the sewage pool, the end of the drip irrigation pipe (8) is connected with the water source, and the end of the purified rainwater collection pipe (9) is connected with the water storage tank; The connection between the rainwater collection pipe (1) and the first horizontal pipe (31) is provided with a first groove (4), and the bottom surface of the first groove (4) is flush with the bottom surface of the first horizontal pipe (31). There is a certain distance L1 between the side of a groove (4) and the pipe wall of the rainwater collection pipe (1), the second horizontal pipe (32) extends into the rainwater collection pipe (1) for a distance L2, and the rainwater collection pipe (1 ) is provided with a second groove (5) at the position corresponding to the second horizontal pipe (32), and the bottom surface of the second groove (5) is flush with and connected to the bottom surface of the second horizontal pipe (32). There is also a pipe gap (15) between the groove (5), the pipe wall of the rainwater collection pipe (1) and the second horizontal pipe (32); the distance between the rainwater collection pipe (1) and the horizontal pipe (3) is from top to bottom Set the first groove (4) and the second groove (5). 2. The flower bed type rainwater garden of a building according to claim 1, characterized in that: said L1≥L2. 3. The flower bed type rainwater garden of the building according to claim 1, characterized in that: the flower bed type rainwater garden of the building is located on the balcony of the building. 4. The flower bed type rainwater garden of a building according to claim 1, characterized in that: the water storage tank is a pp module. 5. The flower bed type rain garden for a building according to claim 1, characterized in that: the height range of the drought and waterlogging tolerant plants (10) is 30-70cm. 6. The flower bed-style rain garden for buildings according to claim 1, characterized in that: the drought- and waterlogging-tolerant plants (10) are reeds, wild rice stems, water hyacinths, umbrella grasses, and rushes. 7. The flower bed type rainwater garden for a building according to claim 1, characterized in that: the end of the drip irrigation pipe (8) communicates with the water storage tank. 8. The flower bed type rainwater garden for a building according to claim 1, characterized in that: the inner bottom surface of the box (14) is a slope, and the side where the rainwater collection pipe (9) is purified is lower side. 9. The flower bed type rain garden for a building according to claim 8, characterized in that: the inclination angle of the slope is 1-5°.