CN212835409U

CN212835409U - Rainwater garden

Info

Publication number: CN212835409U
Application number: CN202021185325.9U
Authority: CN
Inventors: 王伟
Original assignee: Southwest Wetland Co ltd
Current assignee: Southwest Wetland Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-03-30
Anticipated expiration: 2030-06-23

Abstract

The utility model discloses a rainwater garden, including setting up in the intraformational foundation ditch of former soil, the foundation ditch bottom is equipped with porous structure's concrete cushion, the water storage layer has been laid to the bottom of concrete cushion, the metalling has been laid on the top of concrete cushion, the geotechnological cloth that permeates water has been laid on the top of metalling, the sand bed that permeates water has been laid on the top of the geotechnological cloth that permeates water, the planting soil layer has been laid on the top of the sand bed that permeates water, the detention layer has been laid on the top of planting soil layer, the plant has been planted on the top of detention layer, the top central authorities of foundation ditch inlay and be equipped with the grid well, one side upper end of grid well is connected with the overflow pipe, the inboard top of grid well is fixed with well lid grid, the inboard bottom of grid well is equipped with the overflow well, the top of overflow well is provided with the overflow mouth. The utility model discloses have good drainage ability, realize water cyclic utilization, practiced thrift the water resource.

Description

Rainwater garden

Technical Field

The utility model relates to a green building technical field, in particular to rainwater garden.

Background

The rainwater garden is a naturally formed or artificially excavated shallow-concave green land, in particular to a rainwater purification system, which purifies rainwater through the comprehensive action of plants and sandy soil and enables the rainwater to gradually permeate into soil to contain underground water. By utilizing the rainwater garden, the water circulation system above the ground and under the ground can be restored again, the urban environment is improved, and the allocation of urban water resources is improved. The establishment of the rain garden brings a new green landscape for the city and provides a rest environment for the citizens.

When the rainfall is large, the drainage capacity of the existing rainwater garden is low, so that the rainwater stored in the rainwater garden is excessive, and the excessive rainwater is directly discharged and cannot be recycled, so that the improvement is made, and the rainwater garden is provided.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a rainwater garden can effectively solve the problem among the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a rainwater garden comprises a foundation pit arranged in an original soil layer, wherein a porous concrete cushion layer is arranged at the bottom of the foundation pit, a water storage layer is laid at the bottom end of the concrete cushion layer, a gravel layer is laid at the top end of the concrete cushion layer, a permeable geotextile is laid at the top end of the gravel layer, a permeable sand layer is laid at the top end of the permeable geotextile, a planting soil layer is laid at the top end of the permeable sand layer, a detention layer is laid at the top end of the planting soil layer, plants are planted at the top end of the detention layer, a grid well is embedded in the center of the top of the foundation pit, an overflow pipe is connected to the upper end of one side of the grid well, a grid well cover is fixed to the top of the inner side of the grid well, an overflow well is arranged at the bottom of the inner side of the grid well, an overflow port is arranged at the top of the overflow well, a, the end connection of blind pipe has secret water storage tank, secret water storage tank is located one side below of foundation ditch, the top of secret water storage tank is run through and is equipped with the riser, the lower extreme of riser extends to the inboard bottom of secret water storage tank, the top of riser is connected with the water pump, the play water end of water pump is connected with the shower.

Preferably, the length of the spray pipe is greater than or equal to the width of the upper end surface of the foundation pit.

Preferably, the end of the overflow pipe is connected to a nearby municipal rainwater well.

Preferably, cobblestones are paved on the surface of the retention layer.

Preferably, a filter screen is fixedly installed at the upper end of the inner side of the overflow well.

Preferably, a short enclosing wall is arranged around the top of the foundation pit.

Compared with the prior art, the utility model discloses following beneficial effect has: when the rainwater level in a foundation pit is too high, rainwater is collected in a centralized manner through a grid well, garbage with larger volume is filtered by arranging the grid well cover, when the water level is higher, a part of rainwater is discharged into a nearby municipal rainwater well through an overflow pipe, then enters into the overflow well through an overflow port, is further filtered through a filter screen, is guided into an underground water storage tank from a blind pipe, can fully permeate the rainwater into the foundation pit by arranging a detention layer, a gravel layer, a permeable geotextile and a permeable sand layer, and permeates into a water storage layer through a concrete cushion layer with a porous structure for storage, when the water in the water storage layer is saturated, the water in the water storage layer can enter into the foundation pit through the concrete cushion layer, so that the interior of the foundation pit keeps good water stability, plants can be favorably maintained to grow well and stably, and the rainwater temperature in the underground water storage tank is relatively lower in summer, the accessible starts the water pump, and the rainwater that the water pump will store is carried to the shower on ground through the riser in, then waters or carries out the watering cooling to the road surface through the shower to realize water cyclic utilization, practiced thrift the water resource, whole rainwater garden simple structure, convenient operation has good drainage ability, realizes water cyclic utilization, has practiced thrift the water resource.

Drawings

Fig. 1 is a schematic view of the whole structure of the rainwater garden of the present invention.

In the figure: 1. a foundation pit; 2. a concrete cushion; 3. a aquifer; 4. a crushed stone layer; 5. water-permeable geotextile; 6. a permeable sand layer; 7. planting a soil layer; 8. a retention layer; 9. a plant; 10. a grid well; 11. an overflow pipe; 12. an overflow well; 13. an overflow port; 14. a blind pipe; 15. an underground water storage tank; 16. a riser tube; 17. a water pump; 18. a shower pipe; 19. a filter screen; 20. a short fence; 21. grid well lid.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in figure 1, the rainwater garden comprises a foundation pit 1 arranged in an original soil layer, wherein a porous concrete cushion layer 2 is arranged at the bottom of the foundation pit 1, a water storage layer 3 is laid at the bottom end of the concrete cushion layer 2, a gravel layer 4 is laid at the top end of the concrete cushion layer 2, a permeable geotextile 5 is laid at the top end of the gravel layer 4, a permeable sand layer 6 is laid at the top end of the permeable geotextile 5, a planting soil layer 7 is laid at the top end of the permeable sand layer 6, a detention layer 8 is laid at the top end of the planting soil layer 7, plants 9 are planted at the top end of the detention layer 8, a grid well 10 is embedded in the center of the top of the foundation pit 1, an overflow pipe 11 is connected to the upper end of one side of the grid well 10, a grid well cover 21 is fixed at the top of the inner side of the grid well 10, an overflow well 12 is arranged at the bottom of the inner side of the, one side bottom of overflow well 12 is connected with blind pipe 14, the bellows of trompil is arranged for the pipe wall to blind pipe 14, the end connection of blind pipe 14 has secret water storage tank 15, secret water storage tank 15 is located one side below of foundation ditch 1, the top of secret water storage tank 15 is run through and is equipped with riser 16, the lower extreme of riser 16 extends to the inboard bottom of secret water storage tank 15, the top of riser 16 is connected with water pump 17, water pump 17's play water end is connected with shower 18.

In this embodiment, preferably, the length of the shower pipe 18 is greater than or equal to the width of the upper end surface of the foundation pit 1.

In this embodiment, it is preferable that the end of the overflow pipe 11 is connected to a nearby municipal catch basin.

In this embodiment, preferably, cobblestones are laid on the surface of the retention layer 8.

In this embodiment, preferably, a filter screen 19 is fixedly installed at the upper end of the inner side of the overflow well 12.

In this embodiment, it is preferable that a short fence 20 is provided around the top of the foundation pit 1.

It should be noted that, the utility model relates to a rainwater garden, when in use, when the rainwater level in the foundation pit 1 is too high, the rainwater is collected through the grid well 10, the garbage with larger volume is filtered by arranging the grid well cover 21, when the water level is higher, a part of rainwater is discharged to the nearby municipal rainwater well through the overflow pipe 11, then enters the overflow well 12 through the overflow port 13, is further filtered through the filter screen 19, then is guided into the underground water storage tank 15 from the blind pipe 14, through arranging the detention layer 8, the gravel layer 4, the permeable geotextile 5 and the permeable sand layer 6, the rainwater can fully permeate into the foundation pit 1 and permeate into the water storage layer 3 through the concrete cushion layer 2 with porous structure for storage, when the moisture of the water storage layer 3 reaches saturation, the moisture in the water storage layer can enter the foundation pit 1 through the concrete cushion layer, and then the interior of the foundation pit 1 keeps good water stability, the rainwater garden has the advantages that the rainwater garden is beneficial to keeping good and stable growth of plants, the temperature of rainwater in the underground water storage tank 15 is relatively low in summer, the water pump 17 can be started through the water pump 17, the water pump 17 conveys the stored rainwater to the spray pipe 18 on the ground through the lifting pipe 16, then the plants are irrigated or the ground is watered through the spray pipe 18 to reduce the temperature, so that water recycling is achieved, water resources are saved, the whole rainwater garden is simple in structure, convenient to operate and good in drainage capacity, water recycling is achieved, and water resources are saved.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a rainwater garden, includes foundation ditch (1) that sets up in former soil horizon, its characterized in that: the concrete cushion (2) with a porous structure is arranged at the bottom of the foundation pit (1), a water storage layer (3) is laid at the bottom end of the concrete cushion (2), a gravel layer (4) is laid at the top end of the concrete cushion (2), a permeable geotextile (5) is laid at the top end of the gravel layer (4), a permeable sand layer (6) is laid at the top end of the permeable geotextile (5), a planting soil layer (7) is laid at the top end of the permeable sand layer (6), a detention layer (8) is laid at the top end of the planting soil layer (7), plants (9) are planted at the top end of the detention layer (8), a grid well (10) is embedded in the center of the top of the foundation pit (1), an overflow pipe (11) is connected to the upper end of one side of the grid well (10), a grid well cover (21) is fixed at the top of the inner side of the grid well (10), an overflow well (12) is arranged at the bottom, the top of overflow well (12) is provided with overflow mouth (13), one side bottom of overflow well (12) is connected with blind pipe (14), the bellows of trompil has been arranged for the pipe wall in blind pipe (14), the end connection of blind pipe (14) has secret water storage tank (15), secret water storage tank (15) are located one side below of foundation ditch (1), the top of secret water storage tank (15) is run through and is equipped with riser (16), the lower extreme of riser (16) extends to the inboard bottom of secret water storage tank (15), the top of riser (16) is connected with water pump (17), the outlet end of water pump (17) is connected with shower (18).

2. A rainwater garden according to claim 1, wherein: the length of the spray pipe (18) is larger than or equal to the width of the upper end surface of the foundation pit (1).

3. A rainwater garden according to claim 1, wherein: the end part of the overflow pipe (11) is connected with a nearby municipal rainwater well.

4. A rainwater garden according to claim 1, wherein: cobblestones are laid on the surface of the retention layer (8).

5. A rainwater garden according to claim 1, wherein: and a filter screen (19) is fixedly arranged at the upper end of the inner side of the overflow well (12).

6. A rainwater garden according to claim 1, wherein: and a short enclosing wall (20) is arranged around the top of the foundation pit (1).